1---------------------------------------- 27 August 2025. Summary of changes for version 20250807: 3 4Major changes: 5 6Added option to skip the global lock for SMM - Huacai Chen 7 8Fixed non-NUL terminated string implementations - Ahmed Salem 9 10Fixed CCEL and CDAT templates - Ahmed Salem 11 12Fixed a major Linux kernel bug (UAF) that was triggered by unequal number of method parameters (definition) vs arguments (invocation) in different places - Peter Williams, Hans de Goede, Rafael Wysocki 13 14Define distinct D3 states (D3Hot and D3Cold) that help clarify the device behavior support - Aymeric Wibo 15 16A few cleanups, improvements to existing table supports, small fixes, spelling corrections etc. 17 18 19---------------------------------------- 204 April 2025. Summary of changes for version 20250404: 21 22Major changes: 23 24Update all the copyright continuation year to 2025 in the license header of all files 25 26Add complete support for 3 new ACPI tables - MRRM,ERDT and RIMT (Tony Luck & V L Sunil) 27 28Add a license file to the project which is a great improvement (Dionna Glaze) 29 30Update DMAR and TPM2 tables to support their latest versions (Alexey Neyman and Stuart Yoder) 31 32A few fixes including local cache allocation, FFixedHW Region, attribute packing, string vs. non-string char array, vsnprintf()etc. along with some comments, spelling errors and code alignment (multiple awesome contributors) 33 34 35---------------------------------------- 3612 December 2024. Summary of changes for version 20241212: 37 38Major changes: 39 40Fix 2 critical CVE addressing memory leaks - Seunghun Han 41 42EINJ V2 updates - Zaid Alali (Ampere Computing) 43 44CDAT updates - Ira Weiny (Intel Corporation) 45 46Fix mutex handling, do not release ones that were never acquired - Daniil Tatianin 47 48Experiment with new tag name format Ryyyy_mm_dd to solve chronological sorting problems 49 50 51---------------------------------------- 5227 September 2024. Summary of changes for version 20240927: 53 54Major changes: 55 56Fix the acpixf.h file which caused issues for the last release (before this) 20240827 57 58Fix the pointer offset for the SLIC table 59 60Verify the local environment and GitHub commits are all in sync which was a problem with the second from last release (before this)20240322 (aka 20240323 - date issue) 61 62 63 64---------------------------------------- 6527 August 2024. Summary of changes for version 20240827: 66 67Major changes: 68 69Fix the PHAT table working: ensure that the PHAT firmware health record offset works correctly, fix various sub-table offsets, prevent segmentation faults when encountering invalid device paths. Contributed by: Armin Wolf <W_Armin@gmx.de> 70 71Fix the optional table 4-byte signature. Contributed by: Daniil Tatianin <99danilt@gmail.com> 72 73Correct the dumping of SLIC and DBG2 tables. Contributed by: Al Stone (Fedora) <ahs3@ahs3.net> 74 75Add support for QWordPCC and DWordPCC by Jose Marinho (ARM) 76 77Fix the integer to hex string conversions by Armin Wolf 78 79Detecting FACS in reduced HW mode and allowing setting waking vector thereby waking up from S3 state 80 81Fixing issues with crossing page boundaries when mapping operation regions by Raju Rangoju, Sanath S and Mario Limonciello (AMD) 82 83Update the support for IORT, HMAT, MPAM, AEST, CEDT, SPCR etc. tables 84 85Fix multiple issues with table parsing, compilation and disassembly by Myra DeMere (Google) 86 87Allow for more flexibility in _DSM usage. 88 89 90---------------------------------------- 9122 March 2024. Summary of changes for version 20240322: 92 93Major changes: 94 95Update all the license header year from 2023 to 2024. 96 97Fix table argument ordering to work properly with iasl. 98 99Get rid of the annoying repeated warning types in MSVC and Windows. 100 101Fix a test in ASLTS with edge case failure. 102 103Fix a couple of issues with how GPEs are counted and enabled. 104 105Add new tables for various architectures/OS, mainly RISC-V and also update many more. 106 107Add an option to either make the output deterministic or non-deterministic. 108 109Remove redundant checks, duplicated code and fix spellings in various files. 110 111Fix flex arrays for C++ compilers and also make ACPICA overall more compatible with different compilers which throw warnings related to memory sanitization etc. 112 113 114---------------------------------------- 11528 June 2023. Summary of changes for version 20230628: 116 1170) Global changes: 118 119Fixed a problem with the ASL/AML Timer() operator. Discovered by UBSAN: ?array-index-out-of-bounds in acpica/dswexec.c:401:12 index -1 is out of range for type 'acpi_operand_object?. Added AML_NO_OPERAND_RESOLVE flag to Timer (since there are no runtime arguments). Reported by: Abhishek Mainkar abmainkar@nvidia.com. 120 121Added a define for size of acpi_srat_generic_affinity DeviceHandle. Replaced a magic number with a define. The Linux kernel code will utilize this. Reported by Dave Jiang dave.jiang@intel.com. 122 123Added support for _DSC (Deepest State for Configuration) as per ACPI 6.5. 124 1251) ACPICA kernel-resident subsystem: 126 127Added port definitions for CDAT SSLBIS. Add upstream port and any port definitions for SSLBIS. Reported by: Dave Jiang dave.jiang@intel.com. 128 129Fixed misspelled CDAT DSMAS define: ACPI_CEDT_DSMAS_NON_VOLATILE -> ACPI_CDAT_DSMAS_NON_VOLATILE. Reported by: Dave Jiang dave.jiang@intel.com. 130 1311) ACPICA kernel-resident subsystem: 132 133Fix GCC 12 dangling-pointer warning. We're storing a persistent pointer to an ephemeral local variable which technically is a dangling pointer and the compiler is correct. However, since we never indirect the pointer, this is a safe operation and we can suppress the warning. 134 135Also, some C run-times (like MUSL) aren't including <stdint.h> indirectly so we must include it explicitly or we won't have the type definition for uintptr_t. 136 1372) iASL Compiler/Disassembler and ACPICA tools:. 138 139IASL/RHCT: Enable dumping and compiling newly added nodes. The RHCT table is updated with new nodes. Add compile and dump functionality for these new structures. 140 141AcpiExec: Added a new command, ?interrupt?. The Interrupt command simulates an interrupt with a IntID (GSIV) equal to the first argument of the call/invocation. The acpiexec code simulates the behavior by OSPM: execute the _EVT method of the GED device associated with that IntID. Submitted by: Jose Marinho jose.marinho@arm.com. 142 143AcpiExec: Detect GED device and keep track of _EVT. The GED device is described by a _HID of ACPI0013. This code traverses the namespace identifying all GED devices. For each GED device in the namespace we record the Interrupt object and the _EVT method. This information is used when an interrupt is simulated via the ?interrupt? command. Submitted by: Jose Marinho jose.marinho@arm.com. 144---------------------------------------- 14531 March 2023. Summary of changes for version 20230331: 146 147This release is available at https://acpica.org/downloads 148 1490) Global changes: 150 151 152Update all copyright notices to the year 2023. This effects all source 153modules, as well as utility signons. 154Add OS-specific support for Zephyr RTOS. 155Fix miscellaneous code that accesses various objects. 156Remove some dead code. 157Add C ?Flexible Array? support. 158Add support for 64 bit LoongArch compilation. 159Add first batch of RISC-V related definitions. 160Performed a global automated update to remove tabs, fix indentation 161issues, etc. 162 1631) ACPICA kernel-resident subsystem: 164 165hwvalid: Drop port I/O validation. 166 1672) ACPICA tools and utilities: 168 169iASL: Added full macro support in the preprocessor. Example: 170#define ABCD(a,b,c,d) a+b+c-d 171 172Known macro support limitations (at this time): 173 No support for multi-line #define macros (backslash continuation 174lines) 175 No support for the C-style ternary operator 176 No support for the stringizing operator (#) 177 No support for the concatenation (token pasting) operator (##) 178 No support for variable number of macro arguments 179 180Add support for AMD Secure Processor Table (ASPT) version 1. 181Add support for Arm's MPAM ACPI table version 2. 182ACPI 6.5: MADT: add support for trace buffer extension in GICC. 183Headers: Delete bogus NodeArray array of pointers from AEST table. 184PHAT table support is still ongoing. 185 186 187---------------------------------------- 18820 October 2022. Summary of changes for version 20221020: 189 190This release is available at https://acpica.org/downloads 191 1920) Global changes: 193 194Allow disabling of -Werror. For distro maintainers having `-Werror` can 195delay update of GCC. Since every GCC release might add new warnings that 196were not yet captured, it might break the build of packages. With this 197change, distros can now build with `NOWERROR=TRUE` instead of patching 198either the errors or the makefiles. The default behavior keeps on using 199`-Werror`. 200 2011) ACPICA kernel-resident subsystem: 202 203Added support for FFH Operation Region special context data. FFH(Fixed 204Function Hardware) Opregion is approved to be added in ACPI 6.5 via code 205first approach[1]. It requires special context data similar to GPIO and 206Generic Serial Bus as it needs to know platform specific offset and 207length. 208 209Reverted this commit "executer/exsystem: Warn about sleeps greater than 21010 ms." Due to user complaints about valid sleeps greater than 10ms seen 211in some existing machines -- generating lots of warnings. 212 213Do not touch VGA memory when EBDA < 1KiB. The ACPICA code assumes that 214EBDA region must be at least 1KiB in size. Because this is not 215guaranteed, it might happen that while scanning the memory for RSDP 216pointer, the kernel touches memory above 640KiB. This is unwanted as the 217VGA memory range may not be decoded or even present when running under 218virtualization. 219 220Check that EBDA pointer is in valid memory. If the memory at 0x40e is 221uninitialized, the retrieved physical memory address of EBDA may be 222beyond the low memory (i.e. above 640K). If so, the kernel may 223unintentionally access the VGA memory, that might not be decoded or even 224present in case of virtualization. 225 2262) iASL Compiler/Disassembler and ACPICA tools: 227 228Completed the existing partial support for the CDAT "table". Although 229this isn't technically an ACPI table (It doesn't go into the XSDT), it is 230possible to support this table in the Data Table compiler. Created one 231new file, "utilities/utcksum.c", used to centralize checksum 232generation/validation into one location. Includes changes to makefiles 233and MSVC project files. 234 235Updated support for the IORT table - update to version E.e 236 237Added CXL 3.0 structures (CXIMS & RDPAS) to the CEDT table 238 239iASL: Added CCEL table to both compiler/disassembler. 240 241iASL: NHLT table: Fixed compilation of optional undocumented fields 242 243iASL: Fix iASL compile error due to ACPI_TDEL_OFFSET. Commit # 10e4763 244("iASL: Add CCEL table to both compiler/disassembler") introduced the 245iASL build issue. The issue is due to using ACPI_TDEL_OFFSET for CCEL 246table member reference. To fix it, change ACPI_TDEL_OFFSET with 247ACPI_CCEL_OFFSET. 248 249---------------------------------------- 25031 March 2022. Summary of changes for version 20220331: 251 2520) Global changes: 253 254Update all copyright notices to the year 2022. This effects all source 255modules, as well as utility signons. 256 257 2581) ACPICA kernel-resident subsystem: 259 260For the ASL Sleep() operator, issue a warning if the sleep value is 261greater than 10 Milliseconds. Quick boottime is important, so warn about 262sleeps greater than 10 ms. Distribution Linux kernels reach initrd in 350 263ms, so excessive delays should be called out. 10 ms is chosen randomly, 264but three of such delays would already make up ten percent of the 265boottime. 266 267Namespace: Avoid attempting to walk the Namespace if the Namespace does 268not exist. 269 270AML interpreter/iASL compiler: Add new Acpi 6.4 semantics for the 271LoadTable and Load operators. DDB_HANDLE is gone, now loadtable returns a 272pass/fail integer. Now load returns a pass/fail integer, as well as 273storing the return value in an optional 2nd argument. 274 275Headers: Use uintptr_t and offsetof() in Linux kernel builds. To avoid 276"performing pointer subtraction with a null pointer has undefined 277behavior" compiler warnings, use uintptr_t and offsetof() that are always 278available during Linux kernel builds to define ACPI_UINTPTR_T and the 279ACPI_TO_INTEGER() and ACPI_OFFSET() macros when building the ACPICA code 280in the Linux kernel. 281 282Added support for the Windows 11 _OSI string ("Windows 2021"). Submitted 283by superm1. 284 285executer/exsystem: Inform users about ACPI spec violation for the Stall() 286operator. Values greater than 100 microseconds violate the ACPI 287specification, so warn users about it. From the ACPI Specification 288version 6.2 Errata A, 19.6.128 *Stall (Stall for a Short Time)*: 289> The implementation of Stall is OS-specific, but must not relinquish 290> control of the processor. Because of this, delays longer than 100 291> microseconds must use Sleep instead of Stall. 292 293 2942) iASL Compiler/Disassembler and ACPICA tools: 295 296Data Table Compiler/Disassembler: Add support for the APMT table - ARM 297Performance Monitoring Unit table. Submitted by @bwicaksononv. 298 299Data Table Compiler/Disassembler: For MADT, add support for the OEM- 300defined subtables (Types 0x80-0x7F). 301 302Data Table Compiler: Fixed a problem with support for the SDEV table, 303where a subtable Length was not computed correctly. 304 305Data Table Compiler/Disassembler: Add/fix the CFMWS subtable to the CEDT 306Acpi table support. 307 308Data Table Compiler/Disassembler: Fix a compile issue with the CEDT and 309add template. Submitted by MasterDrogo. 310 311Data Table Compiler/Disassembler: NHLT Changes provided by Piotr Maziarz: 312iASL/NHLT: Rename linux specific structures to DeviceInfo to improve 313readability of the code. 314iASL/NHLT: Fix parsing undocumented bytes at the end of Endpoint. 315Undocumented bytes at the end of Endpoint Descriptor can be present 316independently of Linux-specific structures. Their size can also vary. 317iASL/NHLT: Treat TableTerminator as SpecificConfig. SpecificConfig has 4 318bytes of size and then an amount of bytes specified by size. All of the 319terminators that I've seen had a size equal to 4, but theoretically it 320can vary. 321 322iASL/AcpiExec: Use _exit instead of exit in signal handers (ctrl-C). 323 324iASL: Remove a remark due to excessive output. Removed a remark for 325duplicate Offset() operators, due to a user complaint. 326 327---------------------------------------- 32817 December 2021. Summary of changes for version 20211217: 329 3301) ACPICA kernel-resident subsystem: 331 332Hardware: Do not flush CPU cache when entering S4 and S5. According to 333ACPI 6.4, Section 16.2, the CPU cache flushing is required on entering to 334S1, S2, and S3, but the ACPICA code flushes the CPU cache regardless of 335the sleep state. Blind cache flush on entering S5 causes problems for 336TDX. 337 338Avoid subobject buffer overflow when validating RSDP signature. Since the 339Signature member is accessed through an ACPI_TABLE_HEADER, the pointer to 340it is only to a 4-char array, and so trying to read past the 4th 341character, as will be done when it is an RSDP, reads beyond the bounds of 342the accessed member. Contributed by jrtc27. 343 344Add support for PCC Opregion special context data. PCC Opregion added in 345ACPIC 6.3 requires special context data similar to GPIO and Generic 346Serial Bus as it needs to know the internal PCC buffer and its length as 347well as the PCC channel index when the opregion handler is being executed 348by the OSPM. Adds support for the special context data needed by PCC 349Opregion. Submitted by Sudeep Holla <sudeep.holla@arm.com> 350 3512) iASL Compiler/Disassembler and ACPICA tools: 352 353iASL: Completed compiler support for the NHLT ACPI table. 354 355iASL/NHLT table: Fixed a reported problem where a fault would occur 356during disassembly of a "Linux-Specific" section if the "Specific Data" 357part was not present. 358 359iASL: Added full support (compiler and disassembler) for the AGDI ACPI 360table. Contributed by: Ilkka Koskinen <ilkka@os.amperecomputing.com>. 361 362iASL: Added full support for the TDEL ACPI table. 363 364iASL table compiler: FADT support updates: 3651) Allow the 32-bit DSDT address to be zero. 3662) Issue error if both the 32-bit and 64-bit DSDT addresses are zero. 367 368iASL: Fix unaligned accesses to local cache allocations. Contributed by 369jrtc27. 370 371iASL: Open binary input files in binary mode, not text mode Affects 372binary input AML files, as well as binary data table files, for 373disassembly. 374 375---------------------------------------- 37630 September 2021. Summary of changes for version 20210930: 377 378This release is available at https://acpica.org/downloads 379 3801) ACPICA kernel-resident subsystem: 381 382Hardware: Avoid evaluating methods too early during system resume. During 383wakeup from system-wide sleep states, AcpiGetSleepTypeData() is called 384and it tries to get memory from the OS in order to evaluate a control 385method, but if KFENCE is enabled in the Linux kernel, the memory 386allocation attempt causes an IRQ work to be queued and a self-IPI to be 387sent to the CPU running the code which requires the memory controller to 388be ready, so if that happens too early in the wakeup path, it doesn't 389work. 390 391Prevent that from taking place by calling AcpiGetSleepTypeData() for S0 392upfront, when preparing to enter a given sleep state, and saving the data 393obtained by it for later use during system wakeup. 394 395Added a new _OSI string, "Windows 2020". Posted by superm1. 396 3972) iASL Compiler/Disassembler and ACPICA tools: 398 399iASL compiler: Updated the check for usage of _CRS, _DIS, _PRS, and _SRS 400objects: 401New/latest rules: Under a Device Object: 402 1) If _PRS is present, must have _CRS and _SRS 403 2) If _SRS is present, must have _PRS (_PRS requires _CRS and 404_SRS) 405 3) If _DIS is present, must have _SRS (_SRS requires _PRS, _PRS 406requires _CRS and _SRS) 407 4) If _SRS is present, probably should have a _DIS (Remark only) 408 409iASL table disassembler: Added disassembly support for the NHLT ACPI 410table. Note: support for Vendor-defined microphone arrays and SNR 411extensions are not supported at this time -- mostly due to a lack of 412example tables. Actual compiler support for NHLT is forthcoming. 413 414Added a new subtable type for ACPI 6.4 SRAT Generic Port Affinity. It 415uses the same subtable structure as the existing Generic Initiator 416Affinity type. 417 418Added the flag for online capable in the MADT, introduced in ACPI 6.3. 419Posted by superm1. 420 4213) ACPICA documentation: Updated the legal info (that appears at the 422start of the Documents) to clarify distribution rights that are granted. 423 424 425---------------------------------------- 42630 July 2021. Summary of changes for version 20210730: 427 428This release is available at https://acpica.org/downloads 429 4301) ACPICA kernel-resident subsystem: 431 4322) iASL Compiler/Disassembler and ACPICA tools: 433 434iasl: Check usage of _CRS, _DIS, _PRS, and _SRS objects (July 2021). 435 Under the Device Object: 436 1) If _DIS is present, must have a _CRS and _SRS 437 2) If _PRS is present, must have a _CRS, _DIS, and _SRS 438 3) If _SRS is present, must have a _CRS and _DIS 439A warning will be issued for each of these cases. 440Note: For existing ASL/projects, these warnings may be disabled by 441specifying this on the command line: 442"-vw 3141" 443 444iASL Table Disassembler/Table compiler: Fix for WPBT table with no 445command-line arguments. Handle the case where the Command-line 446Arguments table field does not exist (zero). 447 448Headers: Add new DBG2 Serial Port Subtypes 449The Microsoft Debug Port Table 2 (DBG2) specification revision 450September 21, 2020 comprises additional Serial Port Subtypes [1]. 451Reflect that in the actbl1.h header file. Submitted by: 452semihalf-wojtas-marcin 453 454iASL: Add full support for the AEST table (data compiler) 455Includes support in the table compiler and the disassembler. 456 457Add PRMT module header to facilitate parsing. 458This structure is used in to parse PRMT in other Operating Systems 459that relies on using subtable headers in order to parse ACPI tables. 460Although the PRMT doesn't have "subtables" it has a list of module 461information structures that act as subtables. 462 463iASL: Table disassembler: Add missing strings to decode subtable types. 464Includes the MADT and CEDT tables. 465 466 467---------------------------------------- 46804 June 2021. Summary of changes for version 20210604: 469 4701) ACPICA kernel-resident subsystem: 471 472Cleaned up (delete) the context mutex during local address handler object 473deletion. 474 475Fixed a memory leak caused by the _CID repair function. 476 477Added support for PlatformRtMechanism OperationRegion handler. Adds a new 478utility function, AcpiUtConvertUuidToString. Writing a buffer to a 479PlatformRtMechanism fieldunit invokes a bidirectional transaction. The 480input buffer contains 26 bytes containing 9 bytes of status, a command 481byte and a 16-byte UUID. This change will simply pass this incoming 482buffer to a handler registered by the OS. 483 4842) iASL Compiler/Disassembler and ACPICA tools: 485 486Added full support for the PRMT ACPI table (Platform Runtime Mechanism 487Table). Includes support in the iASL compiler, the disassembler, and the 488template generator. 489 490Added full support for the BDAT (BIOS Data ACPI Table) ACPI table. 491 492Added full support for the RGRT (Regulatory Graphics Resource Table) ACPI 493table. 494 495Added full support for the SVKL (Storage Volume Key Location Table) ACPI 496table. Header file support from Kuppuswamy Sathyanarayanan 497<sathyanarayanan.kuppuswamy@linux.intel.com>. 498 499Completed full support for the IVRS (I/O Virtualization Reporting 500Structure) ACPI table. Added compiler support for IVRS, updated 501disassembler support. Adds a new utility, UtIsIdInteger, to determine if 502a HID/CID is an integer or a string. 503 504Headers: Added more structs to the CEDT table: CXL fixed memory window 505structure. 506 507ACPI 6.4: MADT: added Multiprocessor Wakeup Mailbox Structure. 508 509---------------------------------------- 51031 March 2021. Summary of changes for version 20210331: 511 512This release is available at https://acpica.org/downloads, and includes 513all ACPI 6.4 support 514 5151) ACPICA kernel-resident subsystem: 516ACPI 6.4: iASL: deprecate DDBHandleObj keyword 517Always create namespace nodes using AcpiNsCreateNode(). ACPICA is 518allocating an object using kmalloc(), but then frees it 519using kmem_cache_free(<"Acpi-Namespace" kmem_cache>). This is wrong. 520Fixed a race condition in generic serial bus operation region handler. 521Fixed by Hans de Goede. 522 5232) iASL Compiler/Disassembler and ACPICA tools: 524 525ACPI 6.4: NFIT: add Location Cookie field 526ACPI 6.4: HMAT: add new fields/flags 527ACPI 6.4: Add new flags in SRAT 528ACPI 6.4: add SDEV secure access components 529ACPI 6.4: add Csi2Bus resource template 530ACPI 6.4: add support for PHAT table 531ACPI 6.4: add support for PMTT table 532Add disassembly support for the IVRS table. Compilation of the table is 533not yet complete. 534Fixed a potential infinite loop due to type mismatch. The for-loop is 535using a UINT8 counter and comparing the upper 536limit against a UINT32 AslGbl_ExpectedMessagesIndex maximum. In 537the case where AslGbl_ExpectedMessagesIndex is > 255 the counter i 538will wrap around to zero and the loop will never exit. I suspect 539the AslGbl_ExpectedMessagesIndex is never that high, but fixing 540this does future proof the code and cleans up static analysis 541warnings.Colin King. 542iASL/TableCompiler: update it with IORT table E.b revision changes. From 543shamiali2008. 544iASL/TableCompiler: Add compilation support for the VIOT table. Signed- 545off-by: Jean-Philippe Brucker. 546iASL/TableCompiler: Add compilation support for CEDT table. Also, update 547the CEDT template. 548 549---------------------------------------- 55005 January 2021. Summary of changes for version 20210105: 551 552This release is available at https://acpica.org/downloads 553 554 5551) ACPICA kernel-resident subsystem: 556 557Updated all copyrights to 2021. This affects all ACPICA source code 558modules. 559 5602) iASL Compiler/Disassembler and ACPICA tools: 561 562ASL test suite (ASLTS): Updated all copyrights to 2021. 563 564Tools and utilities: Updated all signon copyrights to 2021. 565 566iASL Table Compiler: Removed support for obsolete ACPI tables: VRTC, 567MTMR. Al Stone. 568 569 570---------------------------------------- 57117 December 2020. Summary of changes for version 20201217: 572 573This release is available at https://acpica.org/downloads 574 575 5761) ACPICA kernel-resident subsystem: 577 578Note: The implementation of ACPI 6.4 is underway, and is expected to be 579mostly finished next month, when ACPI 6.4 is released. 580 581From qzed:- fixed-ae-class-macros. Fix exception code class checks. Added 582several new macros, such as ACPI_CNTL_EXCEPTION(Status) in order to 583enable this. 584 585AcpiExec/iASL/AcpiHelp: Added a few changes for support of GCC 10.2.0. 586These included a few casts, as well as a null pointer check. 587 588Fix -Wfallthrough: GCC 7.1 gained -Wimplicit-fallthrough to warn on 589implicit fallthrough, as well as __attribute__((__fallthrough__)) and 590comments to explicitly denote that cases of fallthrough were intentional. 591Clang also supports this warning and statement attribute, but not the 592comment form. Added a new macro, ACPI_FALLTHROUGH to support this feature 593of GCC. With assistance from @nickdesaulniers. 594 5952) iASL Compiler/Disassembler and ACPICA tools: 596 597Added improvement to method call analysis by saving the return type and 598relaxing certain cases of type checking. 599 600iASL Table Compiler: Improved info messages. Added a message to the -T 601option for when the default template (DSDT) is used. 602Also added a note for when multiple SSDTs are created with a DSDT that 603the SSDTs are created in the same file as the DSDT. 604 605 606---------------------------------------- 607 60813 November 2020. Summary of changes for version 20201113: 609 610This release is available at https://acpica.org/downloads 611 612 6131) ACPICA kernel-resident subsystem: 614 615Interpreter: fixed a memory leak by using use existing buffer in _HID 616repair. There was a memory leak that occurred when a _CID object is 617defined as a package containing string objects. When _CID is checked for 618any possible repairs, it calls a helper function to repair _HID (because 619_CID basically contains multiple _HID entries). The _HID repair function 620assumes that string objects are standalone objects that are not contained 621inside of any packages. The _HID repair function replaced the string 622object with a brand new object and attempted to delete the old object by 623decrementing the reference count of the old object. Strings inside of 624packages have a reference count of 2 so the _HID repair function leaves 625this object in a dangling state and causes a memory leak. Instead of 626allocating a brand new object and removing the old object, use the 627existing object when repairing the _HID object. 628 629Added function trace macros to improve namespace debugging. The namespace 630repair mechanism does not have function tracing macros. Add several trace 631macros to improve debuggability. 632 633Handle "orphan" _REG methods for GPIO OpRegions. Before this change 634AcpiEvExecuteRegMethods() had special handling to handle "orphan" (no 635matching OpRegion declared) _REG methods for EC nodes. On Intel Cherry 636Trail devices there are 2 possible ACPI OpRegions for accessing GPIOs. 637The standard GeneralPurposeIo OpRegion and the Cherry Trail - specific 638UserDefined 0x9X OpRegions. Having 2 different types of OpRegions leads 639to potential issues with checks for OpRegion availability, or in other 640words checks if _REG has been called for the OpRegion which the ACPI code 641wants to use. Except for the "orphan" EC handling, ACPICA core does not 642call _REG on an ACPI node which does not define an OpRegion matching the 643type being registered; and the reference design DSDT, from which most 644Cherry Trail DSDTs are derived, does not define GeneralPurposeIo, nor 645UserDefined(0x93) OpRegions for the GPO2 (UID 3) device, because no pins 646were assigned ACPI controlled functions in the reference design. Together 647this leads to the perfect storm, at least on the Cherry Trail based 648Medion Akayo E1239T. This design does use a GPO2 pin from its ACPI code 649and has added the Cherry Trail specific UserDefined(0x93) opregion to its 650GPO2 ACPI node to access this pin. But it uses a "has _REG been called" 651availability check for the standard GeneralPurposeIo OpRegion. This 652clearly is a bug in the DSDT, but this does work under Windows. This 653issue leads to the intel vbtn driver reporting the device always being in 654tablet-mode at boot, even if it is in laptop mode. Which in turn causes 655userspace to ignore touchpad events. So in other words, this issue causes 656the touchpad to not work at boot. This change fixes this by extending the 657"orphan" _REG method handling to also apply to GPIO address-space 658handlers. 659 660 6612) iASL Compiler/Disassembler and ACPICA tools: 662 663iASL: Added more info to namespace dump file (-ln option). In a separate 664section of the dump file (after the main namespace dump), emit the full 665pathname for each namespace node, its type, and the ASL filename and line 666number where it is declared. 667 668AcpiHelp: Added an option to display/decode iASL exceptions. Option is: - 669x [Hex Value] where "Hex Value" is the iASL exception code. If Hex Value 670is omitted, all iASL exceptions are displayed. 671 672iASL: Use StringLiteral instead of StringData for some ASL macros. The 673use of the stringData rule allows for some "string" oriented opcodes 674(Such as ToString, ToHexString, etc.) None of which make sense with the 675macros in question. This change modifies the StringData part of the rule 676for these macros to a simple string literal - thus disallowing the use 677of ToString, ToHexString, etc. 678The following ASL operators (macros) are affected: 679EisaId 680Fprintf 681Printf 682ToUuid 683Unicode 684Note: The MS compiler requires the use of string literals for these 685operators also. 686 687iASL: Added a remark for an unknown UUID: ASL_MSG_UUID_NOT_FOUND. Search 688the list of "known" UUIDs for the input to the ToUUID macro. 689 690Added 5 new UUIDs to the known UUID table. All related to NVDIMM and the 691NFIT table. 692 693 694---------------------------------------- 695 69625 September 2020. Summary of changes for version 20200925: 697 698This release is available at https://acpica.org/downloads 699 700 7011) ACPICA kernel-resident subsystem: 702 703Preserve memory opregion mappings. The ACPICA's strategy with respect to 704the handling of memory mappings associated with memory operation regions 705is to avoid mapping the entire region at once which may be problematic at 706least in principle (for example, it may lead to conflicts with 707overlapping mappings having different attributes created by drivers). It 708may also be wasteful, because memory opregions on some systems take up 709vastchunks of address space while the fields in those regions actually 710accessed by AML are sparsely distributed. 711 712For this reason, a one-page "window" is mapped for a given opregion on 713the first memory access through it and if that "window" does not cover an 714address range accessed through that opregion subsequently, it is unmapped 715and a new "window" is mapped to replace it. Next, if the new "window" is 716not sufficient to access memory through the opregion in question in the 717future, it will be replaced with yet another "window" and so on. That 718may lead to a suboptimal sequence of memory mapping and unmapping 719operations, for example if two fields in one opregion separated from each 720other by a sufficiently wide chunk of unused address space are accessed 721in an alternating pattern. 722 723Added support for 64 bit risc-v compilation. Useful for acpica tools and 724incorporating ACPICA into the Firmware Test Suite. Colin Ian King 725<colin.king@canonical.com>. 726 727Added support for SMBus predefined names (from SMBus Control Method 728Interface Specification, Version 1.0, December 10, 1999. New predefined 729names: 730 _SBA 731 _SBI 732 _SBR 733 _SBT 734 _SBW 735 736AML Disassembler: Added a new command, "All <NameSeg>". This command will 737evaluate all objects in the current namespace whose NameString contains 738the input NameSeg as the last element of the NameString. Useful for 739debugging. 740 741 7422) iASL Compiler/Disassembler and ACPICA tools: 743 744iASL: fixed a crash that occurred when predefined objects return packages 745with lengths that exceed the initializer list. 746 747iASL: added more detail to external resolution error message when 748compiling multiple definition blocks. 749 750iASL: added a remark for an attempt to create a nameseg or namestring 751containing lower-case letters. This should prevent declaring multiple 752namesegs or namestrings in an attempt to refer to different objects (with 753different cases), but actually refer to the same object(s). 754 755iASL: improve alias analysis by saving object type. If the alias is a 756method type, the parameter count is also recorded. 757 758AcpiExec: Increase the default loop timeout value. Was 1 second, is now 75910 seconds. Prevents unnecessary timeouts when executing control methods 760from the command line. 761 762AcpiHelp/disassembler: Added a bunch of "known" UUIDs to the internal 763list. Includes: 764 Memory Device 765 Generic Buttons Device 766 NVDIMM Root Device 767 Control Method Battery 768 Device Graphs for _DSD method 769 Hierarchical Data Extension 770....ARM CoreSight Graph 771 772---------------------------------------- 773 774 77517 July 2020. Summary of changes for version 20200717: 776 777This release is available at https://acpica.org/downloads 778 779 7801) ACPICA kernel-resident subsystem: 781 782Do not increment OperationRegion reference counts for field units. Recent 783server firmware has revealed that this reference count can overflow on 784large servers that declare many field units (thousands) under the same 785OperationRegion. This occurs because each field unit declaration will add 786a reference count to the source OperationRegion. This release solves the 787reference count overflow for OperationRegion objects by preventing 788fieldUnits from incrementing their parent OperationRegion's reference 789count. 790 791Replaced one-element arrays with flexible-arrays, which were introduced 792in C99. 793 794Restored the readme file containing the directions for generation of 795ACPICA from source on MSVC 2017. Updated the file for MSVC 2017. File is 796located at: generate/msvc2017/readme.txt 797 7982) iASL Compiler/Disassembler and ACPICA tools: 799 800iASL: Fixed a regression found in version 20200214. Prevent iASL from 801emitting an extra byte of garbage data when control methods declared a 802single parameter type without using braces. This extra byte is known to 803cause a blue screen on the Windows AML interpreter. 804 805iASL: Made a change to allow external declarations to specify the type of 806a named object even when some name segments are not defined. 807This change allows the following ASL code to compile (When DEV0 is not 808defined or not defined yet): 809 810 External (\_SB.DEV0.OBJ1, IntObj) 811 External (\_SB.DEV0, DeviceObj) 812 813iASL: Fixed a problem where method names in "Alias ()" statement could be 814misinterpreted. They are now interpreted correctly as method invocations. 815 816iASL: capture a method parameter count (Within the Method info segment, 817as well as the argument node) when using parameter type lists. 818 819---------------------------------------- 820 821 82228 May 2020. Summary of changes for version 20200528: 823 824 8251) ACPICA kernel-resident subsystem: 826 827Removed old/obsolete Visual Studio files which were used to build the 828Windows versions of the ACPICA tools. Since we have moved to Visual 829Studio 2017, we are no longer supporting Visual Studio 2006 and 2009 830project files. The new subdirectory and solution file are located at: 831 832 acpica/generate/msvc2017/AcpiComponents.sln 833 834 8352) iASL Compiler/Disassembler and ACPICA tools: 836 837iASL: added support for a new OperationRegion Address Space (subtype): 838PlatformRtMechanism. Support for this new keyword is being released for 839early prototyping. It will appear in the next release of the ACPI 840specification. 841 842iASL: do not optimize the NameString parameter of the CondRefOf operator. 843In the previous iASL compiler release, the NameString parameter of the 844CondRefOf was optimized. There is evidence that some implementations of 845the AML interpreter do not perform the recursive search-to-parent search 846during the execution of the CondRefOf operator. Therefore, the CondRefOf 847operator behaves differently when the NameString parameter is a single 848name segment (a NameSeg) as opposed to a full NamePath (starting at the 849root scope) or a NameString containing parent prefixes. 850 851iASL: Prevent an inadvertent remark message. This change prevents a 852remark if within a control method the following exist: 8531) An Operation Region is defined, and 8542) A Field operator is defined that refers to the region. 855This happens because at the top level, the Field operator does not 856actually create a new named object, it simply references the operation 857region. 858 859Removed support for the acpinames utility. The acpinames was a simple 860utility used to populate and display the ACPI namespace without executing 861any AML code. However, ACPICA now supports executable opcodes outside of 862control methods. This means that executable AML opcodes such as If and 863Store opcodes need to be executed during table load. Therefore, acpinames 864would need to be updated to match the same behavior as the acpiexec 865utility and since acpiexec can already dump the entire namespace (via the 866'namespace' command), we no longer have the need to maintain acpinames. 867 868 In order to dump the contents of the ACPI namespace using acpiexec, 869execute the following command from the command line: 870 871 acpiexec -b "n" [aml files] 872 873---------------------------------------- 874 875 87630 April 2020. Summary of changes for version 20200430: 877 8781) ACPICA kernel-resident subsystem: 879 880Cleaned up the coding style of a couple of global variables 881(AcpiGbl_NextCmdNum and AcpiProtocolLengths) caught by static analyzers. 882AcpiProtocolLengths was made static, and the definition of 883AcpiGbl_NextCmdNum was moved to acglobal.h. 884 885 8862) iASL Compiler/Disassembler and ACPICA tools: 887 888iASL DataTable Compiler: Fixed a segfault on errors that aren't directly 889associated with a field. 890 891Disassembler: has been made more resilient so that it will continue to 892parse AML even if the AML generates ACPI namespace errors. This enables 893iASL to disassemble some AML that may have been compiled using older 894versions of iASL that no longer compile with newer versions of iASL. 895 896iASL: Fixed the required parameters for _NIH and _NIG. Previously, there 897was a mixup where _NIG required one parameter and _NIH required zero 898parameters. This change swaps these parameter requirements. Now it is 899required that _NIH must be called with one parameter and _NIG requires 900zero parameters. 901 902iASL: Allow use of undefined externals as long as they are protected by 903an if (CondRefOf (...)) block when compiling multiple definition blocks. 904 905iASL: Fixed the type override behavior of named objects that are declared 906as External. External declarations will no longer override the type of 907the actual definition if it already exists. 908 909AcpiNames: Added setargv.obj to the MSVC 2017 link sequence to enable 910command line wildcard support on Windows. Note: the AcpiNames utility is 911essentially redundant with the AcpiExec utility (using the "namespace" 912command) and is therefore deprecated. It will be removed in future 913releases of ACPICA. 914 915Disassembler: ignore AE_ALREADY_EXISTS status when parsing create* 916operators. The disassembler is intended to emit existing ASL code as-is. 917Therefore, error messages emitted during disassembly should be ignored or 918handled in a way such that the disassembler can continue to parse the 919AML. This change ignores AE_ALREADY_EXISTS errors during the deferred Op 920parsing for create operators in order to complete parsing ASL termlists. 921 922iASL DataTable Compiler: IVRS table: fix potentially uninitialized 923variable warning. Some compilers catch potential uninitialized variables. 924This is done by examining branches of if/else statements. This change 925replaces an "else if" with an "else" to fix the uninitialized variable 926warning. 927 928 929---------------------------------------- 93026 March 2020. Summary of changes for version 20200326: 931 932 9331) ACPICA kernel-resident subsystem: 934 935Performed a code clean-up to prevent build errors on early versions of 936GCC-10. 937 938Added the NHLT table signature. iASL data table compiler/disassembler 939support for this table is coming soon. 940 941 9422) iASL Compiler/Disassembler and ACPICA tools: 943 944AcpiExec: Fixed several problems with the namespace initialization file 945(-fi<filename> option). Includes fixes to prevent AE_ALREADY_EXISTS 946errors, several seg faults, and enhancements to line parsing within the 947init file. In addition, each object found in the init file and it's new 948value is displayed, as well as any such entries that do not have a 949corresponding name in the namespace. For reference, the syntax for the 950various supported data types are presented below: 951 PCHG 0x777788889999BBBB // Integer 952 \DEV1.STR1 "XYZ" // String 953 BUF1 (88 99 AA) // Buffer 954 PKG1 [0x1111 0x2222] // Package 955 \BF1 0x7980 // BufferField 956 RCRV 0x0123456789ABCDEF // Field Unit 957 958iASL: Added a custom iASL macro __EXPECT__(iASL-Error-Code). This macro 959can be used anywhere in a given ASL file to configure iASL to expect an 960iASL compiler error code on the line where this macro was placed. If the 961error code does not exist, an error is generated. This is intended to be 962used for ACPICA's ASL test suite, but can be used by ASL developers as 963well. 964 965iASL: table compiler: Implemented IVRS IVHD type 11h parsing. The AMD 966IVRS table parsing supported only IVHD type 10h structures. Parsing an 967IVHD type 11h caused the iasl to report unknown subtable type. Add 968necessary structure definition for IVHD type 11h and apply correct 969parsing method based on subtable type. Micha? ?ygowski. 970 971iASL: table compiler: Fixed IVRS table IVHD type 10h reserved field name 972According to AMD IOMMU Specification Revision 3.05 the reserved field 973should be IOMMU Feature Reporting. Change the name of the field to the 974correct one. Micha? ?ygowski. 975 976acpiexec: removed redeclaration of AcpiGbl_DbOpt_NoRegionSupport. Patch 977based on suggestions by David Seifert and Benjamin Berg. 978 979iASL: table compiler: removed an unused variable (DtCompilerParserResult) 980causing linking errors. Patch based on suggestions by David Seifert and 981Benjamin Berg. 982 983iASL: table compiler: make LexBuffer static to avoid linking errors in 984newer compilers. Patch based on suggestions by David Seifert and Benjamin 985Berg. 986 987iASL: fixed type matching between External and Named objects. External 988object types can only be expressed with ACPI object type values that are 989defined in the ACPI spec. However, iASL uses ACPI object type values that 990are local to ACPICA in addition to the values defined in the ACPI spec. 991This change implements type matching to map some object type values 992specific to ACPICA to ones that are defined in the ACPI spec. 993 994iASL: Dropped the type mismatch compiler error that can arise from 995External declarations to a warning. This warning can occur when there is 996a type difference between the external declaration and the actual object 997declaration (when compiling multiple files/modules simultaneously). 998 999iASL: removed an incorrect error message regarding externals. This change 1000removes an incorrect error that is emitted when a duplicate external 1001declaration does not contain a type that opens a scope. This is incorrect 1002because the duplicate external with conflicting types are already caught 1003by iASL and it doesn't make any sense to enforce what this conflicting 1004type should be. 1005 1006AcpiXtract: fix AX_IS_TABLE_BLOCK_HEADER macro. This macro needs to be 1007surrounded by parens. Otherwise, a logical statement that applies a 1008logical not operator to this macro could result in a computation that 1009applies the operator to the left side of the logical and but not the 1010right. Reported-by: John Levon <john.levon@joyent.com> 1011 1012Fixed a problem with the local version of sprint(): On 32-bit, the 1013provided sprintf() is non-functional: with a size of ACPI_UINT32_MAX, 1014String + Size will wrap, meaning End < Start, and 1015AcpiUtBoundStringOutput() will never output anything as a result. The 1016symptom seen of this was acpixtract failing to output anything -- with a 1017custom build that included utprint.c. Signed-off-by: John Levon 1018<john.levon@joyent.com> 1019 1020iASL: Changed the "PlatformCommChannel" ASL keyword to "PCC", as per the 1021ACPI specification. 1022 1023 1024---------------------------------------- 102514 February 2020. Summary of changes for version 20200214: 1026 1027 10281) ACPICA kernel-resident subsystem: 1029 1030Enable sleep button on ACPI legacy wake: Hibernation (S4) is triggered 1031in a guest when it receives a sleep trigger from the hypervisor. When the 1032guest resumes from this power state, it does not see the SleepEnabled 1033bit. In other words, the sleepHibernation (S4) is triggered in a guest 1034when it receives a sleep trigger from the hypervisor. When the guest 1035resumes from this power state, it does not see the SleepEnabled bit. In 1036other words, the sleep button is not enabled on waking from an S4 state. 1037This causes subsequent invocation of sleep state to fail since the 1038guest.button is not enabled on waking from an S4 state. This causes 1039subsequent invocation of sleep state to fail in the guest. Fix this 1040problem by enabling the sleep button in ACPI legacy wake. From Anchal 1041Agarwal <anchalag@amazon.com>. 1042 1043Implemented a new external interface, AcpiAnyGpeStatusSet (). To be used 1044for checking the status bits of all enabled GPEs in one go. It is needed 1045to distinguish spurious SCIs from genuine ones when deciding whether or 1046not to wake up the system from suspend-to-idle. 1047 1048Generic Makefiles: replace HOST name with ACPI_HOST: Some machines may be 1049using HOST in their environment to represent the host name for their 1050machines. Avoid this problem by renaming this variable from HOST to 1051ACPI_HOST. 1052 1053MSVC 2017 project files: Enable multiprocessor generation to improve 1054build performance. 1055 1056Added a macro to get the byte width of a Generic Address structure. New 1057ACPI_ACCESS_BYTE_WIDTH is in addition to the existing 1058ACPI_ACCESS_BIT_WIDTH. From Mika Westerberg. 1059 1060 10612) iASL Compiler/Disassembler and ACPICA tools: 1062 1063iASL: Implemented full support for the (optional, rarely used) ReturnType 1064and ParameterTypesList for the Method, Function, and External operators. 1065For Method declarations, the number of individual ParameterTypes must 1066match the declaration of the number of arguments (NumArgs). This also 1067Fixes a problem with the External operator where extra/extraneous bytes 1068were emitted in the AML code if the optional ReturnType/ParameterTypes 1069were specified for a MethodObj declaration. 1070New error message: 10711) Method NumArgs count does not match length of ParameterTypes list 1072 1073iASL: Implemented detection of type mismatches between External 1074declarations and named object declarations. Also, detect type mismatches 1075between multiple External declarations of the same Name. 1076New error messages: 10771) Type mismatch between external declaration and actual object 1078declaration detected 10792) Type mismatch between multiple external declarations detected 1080 1081iASL: Implemented new error messages for External operators that specify 1082a ReturnType and/or ParameterTypesList for any object type other than 1083control methods (MethodObj). 1084New error messages: 10851) Return type is only allowed for Externals declared as MethodObj 10862) Parameter type is only allowed for Externals declared as MethodObj 1087 1088iASL: Implemented two new remark/warning messages for ASL code that 1089creates named objects from within a control method. This is very 1090inefficient since the named object must be created and deleted each time 1091the method is executed. 1092New messages: 10931) Creation of named objects within a method is highly inefficient, use 1094globals or method local variables instead (remark) 10952) Static OperationRegion should be declared outside control method 1096(warning) 1097 1098iASL: Improved illegal forward reference detection by adding support to 1099detect forward-reference method invocations. 1100 1101iASL: Detect and issue an error message for NameStrings that contain too 1102many individual NameSegs (>255). This is an AML limitation that is 1103defined in the ACPI specification. 1104New message: 11051) NameString contains too many NameSegs (>255) 1106 1107acpidump: windows: use GetSystemFirmwareTable API for all tables except 1108SSDT. By using this API, acpidump is able to get all tables in the XSDT 1109 1110iASL: Removed unused parser file and updated msvc2017 project files. 1111Removed the obsolete AslCompiler.y from the repository. 1112 1113iASL: msvc2017: Fixed macros in the file dependency list to prevent 1114unnecessary rebuilds. Replace %(Directory) with %(RelativeDir). 1115 1116Disassembler: Prevent spilling error messages to the output file. All 1117errors are directed to the console instead. These error messages 1118prevented re-compilation of the resulting disassembled ASL output file 1119(.DSL). 1120 1121 1122---------------------------------------- 112310 January 2020. Summary of changes for version 20200110: 1124 1125 11261) ACPICA kernel-resident subsystem: 1127 1128Updated all copyrights to 2020. This affects all ACPICA source code 1129modules. 1130 1131 11322) iASL Compiler/Disassembler and ACPICA tools: 1133 1134ASL test suite (ASLTS): Updated all copyrights to 2020. 1135 1136Tools and utilities: Updated all signon copyrights to 2020. 1137 1138iASL: fix forward reference analysis for field declarations. Fixes 1139forward reference analysis for field declarations by searching the 1140parent scope for the named object when the object is not present in 1141the current scope. 1142 1143iASL: Improved the error output for ALREADY_EXISTS errors. Now, the 1144full pathname of the name that already exists is printed. 1145 1146iASL: Enhance duplicate Case() detection for buffers. Add check for 1147buffers with no initializer list (these buffers will be filled with 1148zeros at runtime.) 1149 1150 1151---------------------------------------- 115213 December 2019. Summary of changes for version 20191213: 1153 1154 11551) ACPICA kernel-resident subsystem: 1156 1157Return a Buffer object for all fields created via the CreateField 1158operator. Previously, an Integer would be returned if the size of 1159the field was less than or equal to the current size of an Integer. 1160Although this goes against the ACPI specification, it provides 1161compatibility with other ACPI implementations. Also updated the 1162ASLTS test suite to reflect this new behavior. 1163 11642) iASL Compiler/Disassembler and ACPICA tools: 1165 1166iASL: Implemented detection of (and throw an error for) duplicate 1167values for Case statements within a single Switch statement. Duplicate 1168Integers, Strings, and Buffers are supported. 1169 1170iASL: Fix error logging issue during multiple file compilation -- 1171Switch to the correct input file during error node creation. 1172 1173iASL: For duplicate named object creation, now emit an error instead 1174of a warning - since this will cause a runtime error. 1175 1176AcpiSrc: Add unix line-ending support for non-Windows builds. 1177 1178iASL: Add an error condition for an attempt to create a NameString 1179with > 255 NameSegs (the max allowable via the AML definition). 1180 1181 1182---------------------------------------- 118318 October 2019. Summary of changes for version 20191018: 1184 1185 11861) ACPICA kernel-resident subsystem: 1187 1188Debugger: added a new command: ?Fields [address space ID]?. This command 1189dumps the contents of all field units that are defined within the 1190namespace with a particular address space ID. 1191 1192Modified the external interface AcpiLoadTable() to return a table index. 1193This table index can be used for unloading a table for debugging. 1194 ACPI_STATUS 1195 AcpiLoadTable ( 1196 ACPI_TABLE_HEADER *Table, 1197 UINT32 *TableIndex)) 1198 1199Implemented a new external interface: AcpiUnloadTable() This new function 1200takes a table index as an argument and unloads the table. Useful for 1201debugging only. 1202 ACPI_STATUS 1203 AcpiUnloadTable ( 1204 UINT32 TableIndex)) 1205 1206Ported the AcpiNames utility to use the new table initialization 1207sequence. The utility was broken before this change. Also, it was 1208required to include most of the AML interpreter into the utility in order 1209to process table initialization (module-level code execution.) 1210 1211Update for results from running Clang V8.0.1. This fixes all "dead 1212assignment" warnings. There are still several "Dereference of NULL 1213pointer" warnings, but these have been found to be false positive 1214warnings. 1215 1216 12172) iASL Compiler/Disassembler and ACPICA tools: 1218 1219iASL: numerous table compiler changes to ensure that the usage of 1220yacc/bison syntax is POSIX-compliant. 1221 1222iASL/disassembler: several simple bug fixes in the data table 1223disassembler. 1224 1225Acpiexec: expanded the initialization file (the -fi option) to initialize 1226strings, buffers, packages, and field units. 1227 1228 1229---------------------------------------- 123016 August 2019. Summary of changes for version 20190816: 1231 1232This release is available at https://acpica.org/downloads 1233 1234 12351) ACPICA kernel-resident subsystem: 1236 1237Modified the OwnerId mechanism to allow for more Owner Ids. The previous 1238limit was 256 Ids, now it is 4096 Ids. This prevents OWNER_ID_LIMIT 1239exceptions on machines with a large number of initialization threads, 1240many CPU cores and nested initialization control methods. 1241 1242Introduced acpi_dispatch_gpe() as a wrapper around AcpiEvDetectGpe() for 1243checking if the given GPE (as represented by a GPE device handle and a 1244GPE number) is currently active and dispatching it (if that's the case) 1245outside of interrupt context. 1246 1247Table load: exit the interpreter before initializing objects within the 1248new table This prevents re-acquiring the interpreter lock when loading 1249tables 1250 1251Added the "Windows 2019" string to the _OSI support (version 1903). Jung- 1252uk Kim 1253 1254Macros: removed pointer math on a null pointer. Causes warnings on some 1255compilers and/or tools. Changed ACPI_TO_POINTER to use ACPI_CAST_PTR 1256instead of using arithmetic. 1257 1258Fully deployed the ACPI_PRINTF_LIKE macro. This macro was not being used 1259across all "printf-like" internal functions. Also, cleanup all calls to 1260such functions (both in 32-bit mode and 64-bit mode) now that they are 1261analyzed by the gcc compiler via ACPI_PRINTF_LIKE. 1262 1263 12642) iASL Compiler/Disassembler and ACPICA tools: 1265 1266iASL: implemented a new data table compiler flex/bison front-end. This 1267change is internal and is not intended to result in changes to the 1268compiled code. This new compiler front-end can be invoked using the -tp 1269option for now, until the old mechanism is removed. 1270 1271ASLTS: Implemented a new data table compiler test suite. This test suite 1272generates all table templates and compile/disassemble/re-compile/binary- 1273compare each file. 1274 1275iASL: return -1 if AML files were not generated due to compiler errors 1276 1277iASL: added a warning on use of the now-legacy ASL Processor () keyword. 1278 1279iASL: added an error on _UID object declaration that returns a String 1280within a Processor () declaration. A _UID for a processor must be an 1281Integer. 1282 1283iASL: added a null terminator to name strings that consist only of 1284multiple parent prefixes (^) 1285 1286iASL: added support to compile both ASL and data table files in a single 1287command. 1288 1289Updated the tool generation project files that were recently migrated to 1290MSVC 2017 to eliminate all new warnings. The new project files appear in 1291the directory \acpica\generate\msvc2017. This change effectively 1292deprecates the older project files in \acpica\generate\msvc9. 1293 1294 1295---------------------------------------- 129603 July 2019. Summary of changes for version 20190703: 1297 1298 12991) ACPICA kernel-resident subsystem: 1300 1301Remove legacy module-level support code. There were still some remnants 1302of the legacy module-level code executions. Since we no longer support 1303this option, this is essentially dead code and has been removed from the 1304ACPICA source. 1305 1306iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 1307scope. If these named objects are declared outside the root scope, they 1308will not be invoked by any host Operating System. 1309 1310Clear status of GPEs on first direct enable. ACPI GPEs (other than the EC 1311one) can be enabled in two situations. First, the GPEs with existing _Lxx 1312and _Exx methods are enabled implicitly by ACPICA during system 1313initialization. Second, the GPEs without these methods (like GPEs listed 1314by _PRW objects for wakeup devices) need to be enabled directly by the 1315code that is going to use them (e.g. ACPI power management or device 1316drivers). 1317 1318In the former case, if the status of a given GPE is set to start with, 1319its handler method (either _Lxx or _Exx) needs to be invoked to take care 1320of the events (possibly) signaled before the GPE was enabled. In the 1321latter case, however, the first caller of AcpiEnableGpe() for a given GPE 1322should not be expected to care about any events that might be signaled 1323through it earlier. In that case, it is better to clear the status of 1324the GPE before enabling it, to prevent stale events from triggering 1325unwanted actions (like spurious system resume, for example). 1326 1327For this reason, modify AcpiEvAddGpeReference() to take an additional 1328boolean argument indicating whether or not the GPE status needs to be 1329cleared when its reference counter changes from zero to one and make 1330AcpiEnableGpe() pass TRUE to it through that new argument. 1331 1332 13332) iASL Compiler/Disassembler and ACPICA tools: 1334 1335The tool generation process has been migrated to MSVC 2017, and all 1336project files have been upgraded. The new project files appear in the 1337directory \acpica\generate\msvc2017. This change effectively deprecates 1338the older project files in \acpica\generate\msvc9. 1339 1340iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 1341scope. If these named objects are declared outside the root scope, they 1342will not be invoked by any host Operating System 1343 1344---------------------------------------- 134509 May 2019. Summary of changes for version 20190509: 1346 1347 13481) ACPICA kernel-resident subsystem: 1349 1350Revert commit 6c43e1a ("ACPICA: Clear status of GPEs before enabling 1351them") that causes problems with Thunderbolt controllers to occur if a 1352dock device is connected at init time (the xhci_hcd and thunderbolt 1353modules crash which prevents peripherals connected through them from 1354working). Commit 6c43e1a effectively causes commit ecc1165b8b74 ("ACPICA: 1355Dispatch active GPEs at init time") to get undone, so the problem 1356addressed by commit ecc1165b8b74 appears again as a result of it. 1357 1358 13592) iASL Compiler/Disassembler and ACPICA tools: 1360 1361Reverted iASL: Additional forward reference detection. This change 1362reverts forward reference detection for field declarations. The feature 1363unintentionally emitted AML bytecode with incorrect package lengths for 1364some ASL code related to Fields and OperationRegions. This malformed AML 1365can cause systems to crash 1366during boot. The malformed AML bytecode is emitted in iASL version 136720190329 and 20190405. 1368 1369iASL: improve forward reference detection. This change improves forward 1370reference detection for named objects inside of scopes. If a parse object 1371has the OP_NOT_FOUND_DURING_LOAD set, it means that Op is a reference to 1372a named object that is declared later in the AML bytecode. This is 1373allowed if the reference is inside of a method and the declaration is 1374outside of a method like so: 1375 1376DefinitionBlock(...) 1377{ 1378 Method (TEST) 1379 { 1380 Return (NUM0) 1381 } 1382 Name (NUM0,0) 1383} 1384 1385However, if the declaration and reference are both in the same method or 1386outside any methods, this is a forward reference and should be marked as 1387an error because it would result in runtime errors. 1388 1389DefinitionBlock(...) 1390{ 1391 Name (BUFF, Buffer (NUM0) {}) // Forward reference 1392 Name (NUM0, 0x0) 1393 1394 Method (TEST) 1395 { 1396 Local0 = NUM1 1397 Name (NUM1, 0x1) // Forward reference 1398 return (Local0) 1399 } 1400} 1401 1402iASL: Implemented additional buffer overflow analysis for BufferField 1403declarations. Check if a buffer index argument to a create buffer field 1404operation is beyond the end of the target buffer. 1405 1406This affects these AML operators: 1407 1408 AML_CREATE_FIELD_OP 1409 AML_CREATE_BIT_FIELD_OP 1410 AML_CREATE_BYTE_FIELD_OP 1411 AML_CREATE_WORD_FIELD_OP 1412 AML_CREATE_DWORD_FIELD_OP 1413 AML_CREATE_QWORD_FIELD_OP 1414 1415 There are three conditions that must be satisfied in order to allow this 1416validation at compile time: 1417 1418 1) The length of the target buffer must be an integer constant 1419 2) The index specified in the create* must be an integer constant 1420 3) For CreateField, the bit length argument must be non-zero. 1421 1422Example: 1423 Name (BUF1, Buffer() {1,2}) 1424 CreateField (BUF1, 7, 9, CF03) // 3: ERR 1425 1426dsdt.asl 14: CreateField (BUF1, 7, 9, CF03) // 3: ERR 1427Error 6165 - ^ Buffer index beyond end of 1428target buffer 1429 1430 1431---------------------------------------- 143205 April 2019. Summary of changes for version 20190405: 1433 1434 14351) ACPICA kernel-resident subsystem: 1436 1437Event Manager: History: Commit 18996f2db918 ("ACPICA: Events: Stop 1438unconditionally clearing ACPI IRQs during suspend/resume") was added 1439earlier to stop clearing of event status bits unconditionally on suspend 1440and resume paths. Though this change fixed an issue on suspend path, it 1441introduced regressions on several resume paths. In the case of S0ix, 1442events are enabled as part of device suspend path. If status bits for the 1443events are set when they are enabled, it could result in premature wake 1444from S0ix. If status is cleared for any event that is being enabled so 1445that any stale events are cleared out. In case of S0ix, events are 1446enabled as part of device suspend path. If status bits for the events are 1447set when they are enabled, it could result in premature wake from S0ix. 1448 1449This change ensures that status is cleared for any event that is being 1450enabled so that any stale events are cleared out. 1451 1452 14532) iASL Compiler/Disassembler and ACPICA tools: 1454 1455iASL: Implemented an enhanced multiple file compilation that combines 1456named objects from all input files to a single namespace. With this 1457feature, any unresolved external declarations as well as duplicate named 1458object declarations can be detected during compilation rather than 1459generating errors much later at runtime. The following commands are 1460examples that utilize this feature: 1461 iasl dsdt.asl ssdt.asl 1462 iasl dsdt.asl ssdt1.asl ssdt2.asl 1463 iasl dsdt.asl ssdt*.asl 1464 1465---------------------------------------- 146629 March 2019. Summary of changes for version 20190329: 1467 1468 14691) ACPICA kernel-resident subsystem: 1470 1471Namespace support: Remove the address nodes from global list after method 1472termination. The global address list contains pointers to namespace nodes 1473that represent Operation Regions. This change properly removes Operation 1474Region namespace nodes that are declared dynamically during method 1475execution. 1476 1477Linux: Use a different debug default than ACPICA. There was a divergence 1478between Linux and the ACPICA codebases. In order to resolve this 1479divergence, Linux now declares its own debug default in aclinux.h 1480 1481Renamed some internal macros to improve code understanding and 1482maintenance. The macros below all operate on single 4-character ACPI 1483NameSegs, not generic strings (old -> new): 1484 ACPI_NAME_SIZE -> ACPI_NAMESEG_SIZE 1485 ACPI_COMPARE_NAME -> ACPI_COMPARE_NAMESEG 1486 ACPI_MOVE_NAME -> ACPI_COPY_NAMESEG 1487 1488Fix for missing comma in array declaration for the AcpiGbl_GenericNotify 1489table. 1490 1491Test suite: Update makefiles, add PCC operation region support 1492 1493 14942) iASL Compiler/Disassembler and Tools: 1495 1496iASL: Implemented additional illegal forward reference detection. Now 1497detect and emit an error upon detection of a forward reference from a 1498Field to an Operation Region. This will fail at runtime if allowed to 1499pass the compiler. 1500 1501AcpiExec: Add an address list check for dynamic Operation Regions. This 1502feature performs a sanity test for each node the global address list. 1503This is done in order to ensure that all dynamic operation regions are 1504properly removed from the global address list and no dangling pointers 1505are left behind. 1506 1507Disassembler: Improved generation of resource pathnames. This change 1508improves the code that generates resource descriptor and resource tag 1509pathnames. The original code used a bunch of str* C library functions 1510that caused warnings on some compilers. 1511 1512iASL: Removed some uses of strncpy and replaced with memmove. The strncpy 1513function can overwrite buffers if the calling code is not very careful. 1514In the case of generating a module/table header, use of memmove is a 1515better implementation. 1516 1517 15183) Status of new features that have not been completed at this time: 1519 1520iASL: Implementing an enhanced multiple file compilation into a single 1521namespace feature (Status): This feature will be released soon, and 1522allows multiple ASL files to be compiled into the same single namespace. 1523By doing so, any unresolved external declarations as well as duplicate 1524named object declarations can be detected during compilation (rather than 1525later during runtime). The following commands are examples that utilize 1526this feature: 1527 iasl dsdt.asl ssdt.asl 1528 iasl dsdt.asl ssdt1.asl ssdt2.asl 1529 iasl dsdt.asl ssdt*.asl 1530 1531ASL tutorial status: Feedback is being gathered internally and the 1532current plan is to publish this tutorial on the ACPICA website after a 1533final review by a tech writer. 1534 1535---------------------------------------- 153615 February 2019. Summary of changes for version 20190215: 1537 1538 15390) Support for ACPI specification version 6.3: 1540 1541Add PCC operation region support for the AML interpreter. This adds PCC 1542operation region support in the AML interpreter and a default handler for 1543acpiexec. The change also renames the PCC region address space keyword to 1544PlatformCommChannel. 1545 1546Support for new predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG. 1547These methods provide OSPM with health information and device boot 1548status. 1549 1550PDTT: Add TriggerOrder to the PCC Identifier structure. The field value 1551defines if the trigger needs to be invoked by OSPM before or at the end 1552of kernel crash dump processing/handling operation. 1553 1554SRAT: Add Generic Affinity Structure subtable. This subtable in the SRAT 1555is used for describing devices such as heterogeneous processors, 1556accelerators, GPUs, and IO devices with integrated compute or DMA 1557engines. 1558 1559MADT: Add support for statistical profiling in GICC. Statistical 1560profiling extension (SPE) is an architecture-specific feature for ARM. 1561 1562MADT: Add online capable flag. If this bit is set, system hardware 1563supports enabling this processor during OS runtime. 1564 1565New Error Disconnect Recover Notification value. There are a number of 1566scenarios where system Firmware in collaboration with hardware may 1567disconnect one or more devices from the rest of the system for purposes 1568of error containment. Firmware can use this new notification value to 1569alert OSPM of such a removal. 1570 1571PPTT: New additional fields in Processor Structure Flags. These flags 1572provide more information about processor topology. 1573 1574NFIT/Disassembler: Change a field name from "Address Range" to "Region 1575Type". 1576 1577HMAT updates: make several existing fields to be reserved as well as 1578rename subtable 0 to "memory proximity domain attributes". 1579 1580GTDT: Add support for new GTDT Revision 3. This revision adds information 1581for the EL2 timer. 1582 1583iASL: Update the HMAT example template for new fields. 1584 1585iASL: Add support for the new revision of the GTDT (Rev 3). 1586 1587 15881) ACPICA kernel-resident subsystem: 1589 1590AML Parser: fix the main AML parse loop to correctly skip erroneous 1591extended opcodes. AML opcodes come in two lengths: 1-byte opcodes and 2- 1592byte extended opcodes. If an error occurs during an AML table load, the 1593AML parser will continue loading the table by skipping the offending 1594opcode. This implements a "load table at any cost" philosophy. 1595 1596 15972) iASL Compiler/Disassembler and Tools: 1598 1599iASL: Add checks for illegal object references, such as a reference 1600outside of method to an object within a method. Such an object is only 1601temporary. 1602 1603iASL: Emit error for creation of a zero-length operation region. Such a 1604region is rather pointless. If encountered, a runtime error is also 1605implemented in the interpreter. 1606 1607Debugger: Fix a possible fault with the "test objects" command. 1608 1609iASL: Makefile: support parent directory filenames containing embedded 1610spaces. 1611 1612iASL: Update the TPM2 template to revision 4. 1613 1614iASL: Add the ability to report specific warnings or remarks as errors. 1615 1616Disassembler: Disassemble OEMx tables as actual AML byte code. 1617Previously, these tables were treated as "unknown table". 1618 1619iASL: Add definition and disassembly for TPM2 revision 3. 1620 1621iASL: Add support for TPM2 rev 3 compilation. 1622 1623 1624---------------------------------------- 162508 January 2019. Summary of changes for version 20190108: 1626 1627 16281) ACPICA kernel-resident subsystem: 1629 1630Updated all copyrights to 2019. This affects all source code modules. 1631 1632 16332) iASL Compiler/Disassembler and Tools: 1634 1635ASL test suite (ASLTS): Updated all copyrights to 2019. 1636 1637Tools: Updated all signon copyrights to 2019. 1638 1639AcpiExec: Added a new option to dump extra information concerning any 1640memory leaks detected by the internal object/cache tracking mechanism. - 1641va 1642 1643iASL: Updated the table template for the TPM2 table to the newest version 1644of the table (Revision 4) 1645 1646 1647---------------------------------------- 164813 December 2018. Summary of changes for version 20181213: 1649 1650 16511) ACPICA Kernel-resident Subsystem: 1652 1653Fixed some buffer length issues with the GenericSerialBus, related to two 1654of the bidirectional protocols: AttribRawProcessBytes and AttribRawBytes, 1655which are rarely seen in the field. For these, the LEN field of the ASL 1656buffer is now ignored. Hans de Goede 1657 1658Implemented a new object evaluation trace mechanism for control methods 1659and data objects. This includes nested control methods. It is 1660particularly useful for examining the ACPI execution during system 1661initialization since the output is relatively terse. The flag below 1662enables the output of the trace via the ACPI_DEBUG_PRINT_RAW interface: 1663 #define ACPI_LV_EVALUATION 0x00080000 1664 1665Examples: 1666 Enter evaluation : _SB.PCI0._INI (Method) 1667 Exit evaluation : _SB.PCI0._INI 1668 Enter evaluation : _OSI (Method) 1669 Exit evaluation : _OSI 1670 Enter evaluation : _SB.PCI0.TEST (Method) 1671 Nested method call : _SB.PCI0.NST1 1672 Exit nested method : _SB.PCI0.NST1 1673 Exit evaluation : _SB.PCI0.TEST 1674 1675Added two recently-defined _OSI strings. See 1676https://docs.microsoft.com/en-us/windows-hardware/drivers/acpi/winacpi- 1677osi. 1678 "Windows 2018" 1679 "Windows 2018.2" 1680 1681Update for buffer-to-string conversions via the ToHexString ASL operator. 1682A "0x" is now prepended to each of the hex values in the output string. 1683This provides compatibility with other ACPI implementations. The ACPI 1684specification is somewhat vague on this issue. 1685 Example output string after conversion: 1686"0x01,0x02,0x03,0x04,0x05,0x06" 1687 1688Return a run-time error for TermArg expressions within individual package 1689elements. Although this is technically supported by the ASL grammar, 1690other ACPI implementations do not support this either. Also, this fixes a 1691fault if this type of construct is ever encountered (it never has been). 1692 1693 16942) iASL Compiler/Disassembler and Tools: 1695 1696iASL: Implemented a new compile option (-ww) that will promote individual 1697warnings and remarks to errors. This is intended to enhance the firmware 1698build process. 1699 1700AcpiExec: Implemented a new command-line option (-eo) to support the new 1701object evaluation trace mechanism described above. 1702 1703Disassembler: Added support to disassemble OEMx tables as AML/ASL tables 1704instead of a "unknown table" message. 1705 1706AcpiHelp: Improved support for the "special" predefined names such as 1707_Lxx, _Exx, _EJx, _T_x, etc. For these, any legal hex value can now be 1708used for "xx" and "x". 1709 1710---------------------------------------- 171131 October 2018. Summary of changes for version 20181031: 1712 1713 1714An Operation Region regression was fixed by properly adding address 1715ranges to a global list during initialization. This allows OS to 1716accurately check for overlapping regions between native devices (such as 1717PCI) and Operation regions as well as checking for region conflicts 1718between two Operation Regions. 1719 1720Added support for the 2-byte extended opcodes in the code/feature that 1721attempts to continue parsing during the table load phase. Skip parsing 1722Device declarations (and other extended opcodes) when an error occurs 1723during parsing. Previously, only single-byte opcodes were supported. 1724 1725Cleanup: Simplified the module-level code support by eliminating a 1726useless global variable (AcpiGbl_GroupModuleLeveCode). 1727 1728 17292) iASL Compiler/Disassembler and Tools: 1730 1731iASL/Preprocessor: Fixed a regression where an incorrect use of ACPI_FREE 1732could cause a fault in the preprocessor. This was an inadvertent side- 1733effect from moving more allocations/frees to the local cache/memory 1734mechanism. 1735 1736iASL: Enhanced error detection by validating that all NameSeg elements 1737within a NamePatch actually exist. The previous behavior was spotty at 1738best, and such errors could be improperly ignored at compiler time (never 1739at runtime, however. There are two new error messages, as shown in the 1740examples below: 1741 1742dsdt.asl 33: CreateByteField (TTTT.BXXX, 1, CBF1) 1743Error 6161 - ^ One or more objects within 1744the Pathname do not exist (TTTT.BXXX) 1745 1746dsdt.asl 34: CreateByteField (BUF1, UUUU.INT1, BBBB.CBF1) 1747Error 6160 - One or more prefix Scopes do not exist ^ 1748(BBBB.CBF1) 1749 1750iASL: Disassembler/table-compiler: Added support for the static data 1751table TPM2 revision 3 (an older version of TPM2). The support has been 1752added for the compiler and the disassembler. 1753 1754Fixed compilation of DOS format data table file on Unix/Linux systems. 1755iASL now properly detects line continuations (\) for DOS format data 1756table definition language files on when executing on Unix/Linux. 1757 1758---------------------------------------- 175903 October 2018. Summary of changes for version 20181003: 1760 1761 17622) iASL Compiler/Disassembler and Tools: 1763 1764Fixed a regression introduced in version 20180927 that could cause the 1765compiler to fault, especially with NamePaths containing one or more 1766carats (^). Such as: ^^_SB_PCI0 1767 1768Added a new remark for the Sleep() operator when the sleep time operand 1769is larger than one second. This is a very long time for the ASL/BIOS code 1770and may not be what was intended by the ASL writer. 1771 1772---------------------------------------- 177327 September 2018. Summary of changes for version 20180927: 1774 1775 17761) ACPICA kernel-resident subsystem: 1777 1778Updated the GPE support to clear the status of all ACPI events when 1779entering any/all sleep states in order to avoid premature wakeups. In 1780theory, this may cause some wakeup events to be missed, but the 1781likelihood of this is small. This change restores the original behavior 1782of the ACPICA code in order to fix a regression seen from the previous 1783"Stop unconditionally clearing ACPI IRQs during suspend/resume" change. 1784This regression could cause some systems to incorrectly wake immediately. 1785 1786Updated the execution of the _REG methods during initialization and 1787namespace loading to bring the behavior into closer conformance to the 1788ACPI specification and other ACPI implementations: 1789 1790From the ACPI specification 6.2A, section 6.5.4 "_REG (Region): 1791 "Control methods must assume all operation regions are inaccessible 1792until the _REG(RegionSpace, 1) method is executed" 1793 1794 "The exceptions to this rule are: 17951. OSPM must guarantee that the following operation regions are always 1796accessible: 1797 SystemIO operation regions. 1798 SystemMemory operation regions when accessing memory returned by the 1799System Address Map reporting interfaces." 1800 1801Since the state of both the SystemIO and SystemMemory address spaces are 1802defined by the specification to never change, this ACPICA change ensures 1803that now _REG is never called on them. This solves some problems seen in 1804the field and provides compatibility with other ACPI implementations. An 1805update to the upcoming new version of the ACPI specification will help 1806clarify this behavior. 1807 1808Updated the implementation of support for the Generic Serial Bus. For the 1809"bidirectional" protocols, the internal implementation now automatically 1810creates a return data buffer of the maximum size (255). This handles the 1811worst-case for data that is returned from the serial bus handler, and 1812fixes some problems seen in the field. This new buffer is directly 1813returned to the ASL. As such, there is no true "bidirectional" buffer, 1814which matches the ACPI specification. This is the reason for the "double 1815store" seen in the example ASL code in the specification, shown below: 1816 1817Word Process Call (AttribProcessCall): 1818 OperationRegion(TOP1, GenericSerialBus, 0x00, 0x100) 1819 Field(TOP1, BufferAcc, NoLock, Preserve) 1820 { 1821 FLD1, 8, // Virtual register at command value 1. 1822 } 1823 1824 Name(BUFF, Buffer(20){}) // Create GenericSerialBus data buffer 1825 // as BUFF 1826 CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Word) 1827 1828 Store(0x5416, DATA) // Save 0x5416 into the data buffer 1829 Store(Store(BUFF, FLD1), BUFF) // Invoke a write/read Process Call 1830transaction 1831 // This is the "double store". The write to 1832 // FLD1 returns a new buffer, which is stored 1833 // back into BUFF with the second Store. 1834 1835 18362) iASL Compiler/Disassembler and Tools: 1837 1838iASL: Implemented detection of extraneous/redundant uses of the Offset() 1839operator within a Field Unit list. A remark is now issued for these. For 1840example, the first two of the Offset() operators below are extraneous. 1841Because both the compiler and the interpreter track the offsets 1842automatically, these Offsets simply refer to the current offset and are 1843unnecessary. Note, when optimization is enabled, the iASL compiler will 1844in fact remove the redundant Offset operators and will not emit any AML 1845code for them. 1846 1847 OperationRegion (OPR1, SystemMemory, 0x100, 0x100) 1848 Field (OPR1) 1849 { 1850 Offset (0), // Never needed 1851 FLD1, 32, 1852 Offset (4), // Redundant, offset is already 4 (bytes) 1853 FLD2, 8, 1854 Offset (64), // OK use of Offset. 1855 FLD3, 16, 1856 } 1857dsdt.asl 14: Offset (0), 1858Remark 2158 - ^ Unnecessary/redundant use of Offset 1859operator 1860 1861dsdt.asl 16: Offset (4), 1862Remark 2158 - ^ Unnecessary/redundant use of Offset 1863operator 1864 1865---------------------------------------- 186610 August 2018. Summary of changes for version 20180810: 1867 1868 18691) ACPICA kernel-resident subsystem: 1870 1871Initial ACPI table loading: Attempt to continue loading ACPI tables 1872regardless of malformed AML. Since migrating table initialization to the 1873new module-level code support, the AML interpreter rejected tables upon 1874any ACPI error encountered during table load. This is a problem because 1875non-serious ACPI errors during table load do not necessarily mean that 1876the entire definition block (DSDT or SSDT) is invalid. This change 1877improves the table loading by ignoring some types of errors that can be 1878generated by incorrect AML. This can range from object type errors, scope 1879errors, and index errors. 1880 1881Suspend/Resume support: Update to stop unconditionally clearing ACPI IRQs 1882during suspend/resume. The status of ACPI events is no longer cleared 1883when entering the ACPI S5 system state (power off) which caused some 1884systems to power up immediately after turning off power in certain 1885situations. This was a functional regression. It was fixed by clearing 1886the status of all ACPI events again when entering S5 (for system-wide 1887suspend or hibernation the clearing of the status of all events is not 1888desirable, as it might cause the kernel to miss wakeup events sometimes). 1889Rafael Wysocki. 1890 1891 18922) iASL Compiler/Disassembler and Tools: 1893 1894AcpiExec: Enhanced the -fi option (Namespace initialization file). Field 1895elements listed in the initialization file were previously initialized 1896after the table load and before executing module-level code blocks. 1897Recent changes in the module-level code support means that the table load 1898becomes a large control method execution. If fields are used within 1899module-level code and we are executing with the -fi option, the 1900initialization values were used to initialize the namespace object(s) 1901only after the table was finished loading. This change Provides an early 1902initialization of objects specified in the initialization file so that 1903field unit values are populated during the table load (not after the 1904load). 1905 1906AcpiExec: Fixed a small memory leak regression that could result in 1907warnings during exit of the utility. These warnings were similar to 1908these: 1909 0002D690 Length 0x0006 nsnames-0502 [Not a Descriptor - too small] 1910 0002CD70 Length 0x002C utcache-0453 [Operand] Integer RefCount 0x0001 1911 1912---------------------------------------- 191329 June 2018. Summary of changes for version 20180629: 1914 1915 19161) iASL Compiler/Disassembler and Tools: 1917 1918iASL: Fixed a regression related to the use of the ASL External 1919statement. Error checking for the use of the External() statement has 1920been relaxed. Previously, a restriction on the use of External meant that 1921the referenced named object was required to be defined in a different 1922table (an SSDT). Thus it would be an error to declare an object as an 1923external and then define the same named object in the same table. For 1924example: 1925 DefinitionBlock (...) 1926 { 1927 External (DEV1) 1928 Device (DEV1){...} // This was an error 1929 } 1930However, this behavior has caused regressions in some existing ASL code, 1931because there is code that depends on named objects and externals (with 1932the same name) being declared in the same table. This change will allow 1933the ASL code above to compile without errors or warnings. 1934 1935iASL: Implemented ASL language extensions for four operators to make some 1936of their arguments optional instead of required: 1937 1) Field (RegionName, AccessType, LockRule, UpdateRule) 1938 2) BankField (RegionName, BankName, BankValue, 1939 AccessType, LockRule, UpdateRule) 1940 3) IndexField (IndexName, DataName, 1941 AccessType, LockRule, UpdateRule) 1942For the Field operators above, the AccessType, LockRule, and UpdateRule 1943are now optional arguments. The default values are: 1944 AccessType: AnyAcc 1945 LockRule: NoLock 1946 UpdateRule: Preserve 1947 4) Mutex (MutexName, SyncLevel) 1948For this operator, the SyncLevel argument is now optional. This argument 1949is rarely used in any meaningful way by ASL code, and thus it makes sense 1950to make it optional. The default value is: 1951 SyncLevel: 0 1952 1953iASL: Attempted use of the ASL Unload() operator now results in the 1954following warning: 1955 "Unload is not supported by all operating systems" 1956This is in fact very true, and the Unload operator may be completely 1957deprecated in the near future. 1958 1959AcpiExec: Fixed a regression for the -fi option (Namespace initialization 1960file. Recent changes in the ACPICA module-level code support altered the 1961table load/initialization sequence . This means that the table load has 1962become a large method execution of the table itself. If Operation Region 1963Fields are used within any module-level code and the -fi option was 1964specified, the initialization values were populated only after the table 1965had completely finished loading (and thus the module-level code had 1966already been executed). This change moves the initialization of objects 1967listed in the initialization file to before the table is executed as a 1968method. Field unit values are now initialized before the table execution 1969is performed. 1970 1971---------------------------------------- 197231 May 2018. Summary of changes for version 20180531: 1973 1974 19751) ACPICA kernel-resident Subsystem: 1976 1977Implemented additional support to help ensure that a DSDT or SSDT is 1978fully loaded even if errors are incurred during the load. The majority of 1979the problems that are seen is the failure of individual AML operators 1980that occur during execution of any module-level code (MLC) existing in 1981the table. This support adds a mechanism to abort the current ASL 1982statement (AML opcode), emit an error message, and to simply move on to 1983the next opcode -- instead of aborting the entire table load. This is 1984different than the execution of a control method where the entire method 1985is aborted upon any error. The goal is to perform a very "best effort" to 1986load the ACPI tables. The most common MLC errors that have been seen in 1987the field are direct references to unresolved ASL/AML symbols (referenced 1988directly without the use of the CondRefOf operator to validate the 1989symbol). This new ACPICA behavior is now compatible with other ACPI 1990implementations. 1991 1992Interpreter: The Unload AML operator is no longer supported for the 1993reasons below. An AE_NOT_IMPLEMENTED exception is returned. 19941) A correct implementation on at least some hosts may not be possible. 19952) Other ACPI implementations do not correctly/fully support it. 19963) It requires host device driver support which is not known to exist. 1997 (To properly support namespace unload out from underneath.) 19984) This AML operator has never been seen in the field. 1999 2000Parser: Added a debug option to dump AML parse sub-trees as they are 2001being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is 2002ACPI_DB_PARSE_TREES. 2003 2004Debugger: Reduced the verbosity for errors incurred during table load and 2005module-level code execution. 2006 2007Completed an investigation into adding a namespace node "owner list" 2008instead of the current "owner ID" associated with namespace nodes. This 2009list would link together all nodes that are owned by an individual 2010control method. The purpose would be to enhance control method execution 2011by speeding up cleanup during method exit (all namespace nodes created by 2012a method are deleted upon method termination.) Currently, the entire 2013namespace must be searched for matching owner IDs if (and only if) the 2014method creates named objects outside of the local scope. However, by far 2015the most common case is that methods create objects locally, not outside 2016the method scope. There is already an ACPICA optimization in place that 2017only searches the entire namespace in the rare case of a method creating 2018objects elsewhere in the namespace. Therefore, it is felt that the 2019overhead of adding an additional pointer to each namespace node to 2020implement the owner list makes this feature unnecessary. 2021 2022 20232) iASL Compiler/Disassembler and Tools: 2024 2025iASL, Disassembler, and Template generator: Implemented support for 2026Revision D of the IORT table. Adds a new subtable that is used to specify 2027SMMUv3 PMCGs. rmurphy-arm. 2028 2029Disassembler: Restored correct table header validation for the "special" 2030ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI 2031table header and must be special-cased. This was a regression that has 2032been present for apparently a long time. 2033 2034AcpiExec: Reduced verbosity of the local exception handler implemented 2035within acpiexec. This handler is invoked by ACPICA upon any exceptions 2036generated during control method execution. A new option was added: -vh 2037restores the original verbosity level if desired. 2038 2039AcpiExec: Changed the default base from decimal to hex for the -x option 2040(set debug level). This simplifies the use of this option and matches the 2041behavior of the corresponding iASL -x option. 2042 2043AcpiExec: Restored a force-exit on multiple control-c (sigint) 2044interrupts. This allows program termination even if other issues cause 2045the control-c to fail. 2046 2047ASL test suite (ASLTS): Added tests for the recently implemented package 2048element resolution mechanism that allows forward references to named 2049objects from individual package elements (this mechanism provides 2050compatibility with other ACPI implementations.) 2051 2052 2053---------------------------------------- 20548 May 2018. Summary of changes for version 20180508: 2055 2056 20571) ACPICA kernel-resident subsystem: 2058 2059Completed the new (recently deployed) package resolution mechanism for 2060the Load and LoadTable ASL/AML operators. This fixes a regression that 2061was introduced in version 20180209 that could result in an 2062AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table 2063(SSDT) that contains package objects. 2064 2065 20662) iASL Compiler/Disassembler and Tools: 2067 2068AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than 20691 MB. This change allows for table offsets within the acpidump file to be 2070up to 8 characters. These changes are backwards compatible with existing 2071acpidump files. 2072 2073 2074---------------------------------------- 207527 April 2018. Summary of changes for version 20180427: 2076 2077 20781) ACPICA kernel-resident subsystem: 2079 2080Debugger: Added support for Package objects in the "Test Objects" 2081command. This command walks the entire namespace and evaluates all named 2082data objects (Integers, Strings, Buffers, and now Packages). 2083 2084Improved error messages for the namespace root node. Originally, the root 2085was referred to by the confusing string "\___". This has been replaced by 2086"Namespace Root" for clarification. 2087 2088Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin 2089Ian King <colin.king@canonical.com>. 2090 2091 20922) iASL Compiler/Disassembler and Tools: 2093 2094iASL: Implemented support to detect and flag illegal forward references. 2095For compatibility with other ACPI implementations, these references are 2096now illegal at the root level of the DSDT or SSDTs. Forward references 2097have always been illegal within control methods. This change should not 2098affect existing ASL/AML code because of the fact that these references 2099have always been illegal in the other ACPI implementation. 2100 2101iASL: Added error messages for the case where a table OEM ID and OEM 2102TABLE ID strings are longer than the ACPI-defined length. Previously, 2103these strings were simply silently truncated. 2104 2105iASL: Enhanced the -tc option (which creates an AML hex file in C, 2106suitable for import into a firmware project): 2107 1) Create a unique name for the table, to simplify use of multiple 2108SSDTs. 2109 2) Add a protection #ifdef in the file, similar to a .h header file. 2110With assistance from Sami Mujawar, sami.mujawar@arm.com and Evan Lloyd, 2111evan.lloyd@arm.com 2112 2113AcpiExec: Added a new option, -df, to disable the local fault handler. 2114This is useful during debugging, where it may be desired to drop into a 2115debugger on a fault. 2116 2117---------------------------------------- 211813 March 2018. Summary of changes for version 20180313: 2119 2120 21211) ACPICA kernel-resident subsystem: 2122 2123Implemented various improvements to the GPE support: 2124 21251) Dispatch all active GPEs at initialization time so that no GPEs are 2126lost. 21272) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled 2128before devices are enumerated. 21293) Don't unconditionally clear ACPI IRQs during suspend/resume, so that 2130IRQs are not lost. 21314) Add parallel GPE handling to eliminate the possibility of dispatching 2132the same GPE twice. 21335) Dispatch any pending GPEs after enabling for the first time. 2134 2135AcpiGetObjectInfo - removed support for the _STA method. This was causing 2136problems on some platforms. 2137 2138Added a new _OSI string, "Windows 2017.2". 2139 2140Cleaned up and simplified the module-level code support. These changes 2141are in preparation for the eventual removal of the legacy MLC support 2142(deferred execution), replaced by the new MLC architecture which executes 2143the MLC as a table is loaded (DSDT/SSDTs). 2144 2145Changed a compile-time option to a runtime option. Changes the option to 2146ignore ACPI table load-time package resolution errors into a runtime 2147option. Used only for platforms that generate many AE_NOT_FOUND errors 2148during boot. AcpiGbl_IgnorePackageResolutionErrors. 2149 2150Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some 2151ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid 2152compilation errors from unused variables (seen with some compilers). 2153 2154 21552) iASL Compiler/Disassembler and Tools: 2156 2157ASLTS: parallelized execution in order to achieve an (approximately) 2X 2158performance increase. 2159 2160ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves 2161error reporting. 2162 2163---------------------------------------- 216409 February 2018. Summary of changes for version 20180209: 2165 2166 21671) ACPICA kernel-resident subsystem: 2168 2169Completed the final integration of the recent changes to Package Object 2170handling and the module-level AML code support. This allows forward 2171references from individual package elements when the package object is 2172declared from within module-level code blocks. Provides compatibility 2173with other ACPI implementations. 2174 2175The new architecture for the AML module-level code has been completed and 2176is now the default for the ACPICA code. This new architecture executes 2177the module-level code in-line as the ACPI table is loaded/parsed instead 2178of the previous architecture which deferred this code until after the 2179table was fully loaded. This solves some ASL code ordering issues and 2180provides compatibility with other ACPI implementations. At this time, 2181there is an option to fallback to the earlier architecture, but this 2182support is deprecated and is planned to be completely removed later this 2183year. 2184 2185Added a compile-time option to ignore AE_NOT_FOUND exceptions during 2186resolution of named reference elements within Package objects. Although 2187this is potentially a serious problem, it can generate a lot of 2188noise/errors on platforms whose firmware carries around a bunch of unused 2189Package objects. To disable these errors, define 2190ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All 2191errors are always reported for ACPICA applications such as AcpiExec. 2192 2193Fixed a regression related to the explicit type-conversion AML operators 2194(ToXXXX). The regression was introduced early in 2017 but was not seen 2195until recently because these operators are not fully supported by other 2196ACPI implementations and are thus rarely used by firmware developers. The 2197operators are defined by the ACPI specification to not implement the 2198"implicit result object conversion". The regression incorrectly 2199introduced this object conversion for the following explicit conversion 2200operators: 2201 ToInteger 2202 ToString 2203 ToBuffer 2204 ToDecimalString 2205 ToHexString 2206 ToBCD 2207 FromBCD 2208 2209 22102) iASL Compiler/Disassembler and Tools: 2211 2212iASL: Fixed a problem with the compiler constant folding feature as 2213related to the ToXXXX explicit conversion operators. These operators do 2214not support the "implicit result object conversion" by definition. Thus, 2215ASL expressions that use these operators cannot be folded to a simple 2216Store operator because Store implements the implicit conversion. This 2217change uses the CopyObject operator for the ToXXXX operator folding 2218instead. CopyObject is defined to not implement implicit result 2219conversions and is thus appropriate for folding the ToXXXX operators. 2220 2221iASL: Changed the severity of an error condition to a simple warning for 2222the case where a symbol is declared both locally and as an external 2223symbol. This accommodates existing ASL code. 2224 2225AcpiExec: The -ep option to enable the new architecture for module-level 2226code has been removed. It is replaced by the -dp option which instead has 2227the opposite effect: it disables the new architecture (the default) and 2228enables the legacy architecture. When the legacy code is removed in the 2229future, the -dp option will be removed also. 2230 2231---------------------------------------- 223205 January 2018. Summary of changes for version 20180105: 2233 2234 22351) ACPICA kernel-resident subsystem: 2236 2237Updated all copyrights to 2018. This affects all source code modules. 2238 2239Fixed a possible build error caused by an unresolved reference to the 2240AcpiUtSafeStrncpy function. 2241 2242Removed NULL pointer arithmetic in the various pointer manipulation 2243macros. All "(void *) NULL" constructs are converted to "(void *) 0". 2244This eliminates warnings/errors in newer C compilers. Jung-uk Kim. 2245 2246Added support for A32 ABI compilation, which uses the ILP32 model. Anuj 2247Mittal. 2248 2249 22502) iASL Compiler/Disassembler and Tools: 2251 2252ASLTS: Updated all copyrights to 2018. 2253 2254Tools: Updated all signon copyrights to 2018. 2255 2256AcpiXtract: Fixed a regression related to ACPI table signatures where the 2257signature was truncated to 3 characters (instead of 4). 2258 2259AcpiExec: Restore the original terminal mode after the use of the -v and 2260-vd options. 2261 2262ASLTS: Deployed the iASL __METHOD__ macro across the test suite. 2263 2264---------------------------------------- 226514 December 2017. Summary of changes for version 20171214: 2266 2267 22681) ACPICA kernel-resident subsystem: 2269 2270Fixed a regression in the external (public) AcpiEvaluateObjectTyped 2271interface where the optional "pathname" argument had inadvertently become 2272a required argument returning an error if omitted (NULL pointer 2273argument). 2274 2275Fixed two possible memory leaks related to the recently developed "late 2276resolution" of reference objects within ASL Package Object definitions. 2277 2278Added two recently defined _OSI strings: "Windows 2016" and "Windows 22792017". Mario Limonciello. 2280 2281Implemented and deployed a safer version of the C library function 2282strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the 2283creation of unterminated strings as a possible result of a standard 2284strncpy. 2285 2286Cleaned up and restructured the global variable file (acglobal.h). There 2287are many changes, but no functional changes. 2288 2289 22902) iASL Compiler/Disassembler and Tools: 2291 2292iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the 2293optional OemData field at the end of the table was incorrectly required 2294for proper compilation. It is now correctly an optional field. 2295 2296ASLTS: The entire suite was converted from standard ASL to the ASL+ 2297language, using the ASL-to-ASL+ converter which is integrated into the 2298iASL compiler. A binary compare of all output files has verified the 2299correctness of the conversion. 2300 2301iASL: Fixed the source code build for platforms where "char" is unsigned. 2302This affected the iASL lexer only. Jung-uk Kim. 2303 2304---------------------------------------- 230510 November 2017. Summary of changes for version 20171110: 2306 2307 23081) ACPICA kernel-resident subsystem: 2309 2310This release implements full support for ACPI 6.2A: 2311 NFIT - Added a new subtable, "Platform Capabilities Structure" 2312No other changes to ACPICA were required, since ACPI 6.2A is primarily an 2313errata release of the specification. 2314 2315Other ACPI table changes: 2316 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo 2317 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy 2318Linton 2319 2320Utilities: Modified the string/integer conversion functions to use 2321internal 64-bit divide support instead of a native divide. On 32-bit 2322platforms, a 64-bit divide typically requires a library function which 2323may not be present in the build (kernel or otherwise). 2324 2325Implemented a targeted error message for timeouts returned from the 2326Embedded Controller device driver. This is seen frequently enough to 2327special-case an AE_TIME returned from an EC operation region access: 2328 "Timeout from EC hardware or EC device driver" 2329 2330Changed the "ACPI Exception" message prefix to "ACPI Error" so that all 2331runtime error messages have the identical prefix. 2332 2333 23342) iASL Compiler/Disassembler and Tools: 2335 2336AcpiXtract: Fixed a problem with table header detection within the 2337acpidump file. Processing a table could be ended early if a 0x40 (@) 2338appears in the original binary table, resulting in the @ symbol appearing 2339in the decoded ASCII field at the end of the acpidump text line. The 2340symbol caused acpixtract to incorrectly think it had reached the end of 2341the current table and the beginning of a new table. 2342 2343AcpiXtract: Added an option (-f) to ignore some errors during table 2344extraction. This initial implementation ignores non-ASCII and non- 2345printable characters found in the acpidump text file. 2346 2347TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics 2348for ASLTS. This feature is used to track memory allocations from 2349different memory caches within the ACPICA code. At the end of an ASLTS 2350run, these memory statistics are recorded and stored in a log file. 2351 2352Debugger (user-space version): Implemented a simple "Background" command. 2353Creates a new thread to execute a control method in the background, while 2354control returns to the debugger prompt to allow additional commands. 2355 Syntax: Background <Namepath> [Arguments] 2356 2357---------------------------------------- 235829 September 2017. Summary of changes for version 20170929: 2359 2360 23611) ACPICA kernel-resident subsystem: 2362 2363Redesigned and implemented an improved ASL While() loop timeout 2364mechanism. This mechanism is used to prevent infinite loops in the kernel 2365AML interpreter caused by either non-responsive hardware or incorrect AML 2366code. The new implementation uses AcpiOsGetTimer instead of a simple 2367maximum loop count, and is thus more accurate and constant across 2368different machines. The default timeout is currently 30 seconds, but this 2369may be adjusted later. 2370 2371Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to 2372better reflect the new implementation of the loop timeout mechanism. 2373 2374Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support 2375and to fix an off-by-one error. Jung-uk Kim. 2376 2377Fixed an EFI build problem by updating the makefiles to for a new file 2378that was added, utstrsuppt.c 2379 2380 23812) iASL Compiler/Disassembler and Tools: 2382 2383Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This 2384includes support in the table disassembler, compiler, and template 2385generator. 2386 2387iASL: Added an exception for an illegal type of recursive method 2388invocation. If a method creates named objects, the first recursive call 2389will fail at runtime. This change adds an error detection at compile time 2390to catch the problem up front. Note: Marking such a method as 2391"serialized" will not help with this problem, because the same thread can 2392acquire the method mutex more than once. Example compiler and runtime 2393output: 2394 2395 Method (MTH1) 2396 { 2397 Name (INT1, 1) 2398 MTH1 () 2399 } 2400 2401 dsdt.asl 22: MTH1 () 2402 Error 6152 - ^ Illegal recursive call to method 2403 that creates named objects (MTH1) 2404 2405Previous runtime exception: 2406 ACPI Error: [INT1] Namespace lookup failure, 2407 AE_ALREADY_EXISTS (20170831/dswload2-465) 2408 2409iASL: Updated support for External() opcodes to improve namespace 2410management and error detection. These changes are related to issues seen 2411with multiple-segment namespace pathnames within External declarations, 2412such as below: 2413 2414 External(\_SB.PCI0.GFX0, DeviceObj) 2415 External(\_SB.PCI0.GFX0.ALSI) 2416 2417iASL: Implemented support for multi-line error/warning messages. This 2418enables more detailed and helpful error messages as below, from the 2419initial deployment for the duplicate names error: 2420 2421 DSDT.iiii 1692: Device(PEG2) { 2422 Error 6074 - ^ Name already exists in scope 2423(PEG2) 2424 2425 Original name creation/declaration below: 2426 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj) 2427 2428AcpiXtract: Added additional flexibility to support differing input hex 2429dump formats. Specifically, hex dumps that contain partial disassembly 2430and/or comments within the ACPI table data definition. There exist some 2431dump utilities seen in the field that create this type of hex dump (such 2432as Simics). For example: 2433 2434 DSDT @ 0xdfffd0c0 (10999 bytes) 2435 Signature DSDT 2436 Length 10999 2437 Revision 1 2438 Checksum 0xf3 (Ok) 2439 OEM_ID BXPC 2440 OEM_table_id BXDSDT 2441 OEM_revision 1 2442 Creator_id 1280593481 2443 Creator_revision 537399345 2444 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00 2445 ... 2446 2af0: 5f 4c 30 46 00 a4 01 2447 2448Test suite: Miscellaneous changes/fixes: 2449 More cleanup and simplification of makefiles 2450 Continue compilation of test cases after a compile failure 2451 Do not perform binary compare unless both files actually exist 2452 2453iASL: Performed some code/module restructuring. Moved all memory 2454allocation functions to new modules. Two new files, aslallocate.c and 2455aslcache.c 2456 2457---------------------------------------- 245831 August 2017. Summary of changes for version 20170831: 2459 2460 24611) ACPICA kernel-resident subsystem: 2462 2463Implemented internal support for full 64-bit addresses that appear in all 2464Generic Address Structure (GAS) structures. Previously, only the lower 32 2465bits were used. Affects the use of GAS structures in the FADT and other 2466tables, as well as the GAS structures passed to the AcpiRead and 2467AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 2468 2469Added header support for the PDTT ACPI table (Processor Debug Trigger 2470Table). Full support in the iASL Data Table Compiler and disassembler is 2471forthcoming. 2472 2473 24742) iASL Compiler/Disassembler and Tools: 2475 2476iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 2477Properties Topology Table) where a flag bit was specified in the wrong 2478bit position ("Line Size Valid", bit 6). 2479 2480iASL: Implemented support for Octal integer constants as defined by the 2481ASL language grammar, per the ACPI specification. Any integer constant 2482that starts with a zero is an octal constant. For example, 2483 Store (037777, Local0) /* Octal constant */ 2484 Store (0x3FFF, Local0) /* Hex equivalent */ 2485 Store (16383, Local0) /* Decimal equivalent */ 2486 2487iASL: Improved overflow detection for 64-bit string conversions during 2488compilation of integer constants. "Overflow" in this case means a string 2489that represents an integer that is too large to fit into a 64-bit value. 2490Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 2491the low-order 32 bits with a warning, as previously implemented. Several 2492new exceptions are defined that indicate a 64-bit overflow, as well as 2493the base (radix) that was used during the attempted conversion. Examples: 2494 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW 2495 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW 2496 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW 2497 2498iASL: Added a warning for the case where a ResourceTemplate is declared 2499with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 2500this case, the resulting template is created with a single END_TAG 2501descriptor, which is essentially useless. 2502 2503iASL: Expanded the -vw option (ignore specific warnings/remarks) to 2504include compilation error codes as well. 2505 2506---------------------------------------- 250728 July 2017. Summary of changes for version 20170728: 2508 2509 25101) ACPICA kernel-resident subsystem: 2511 2512Fixed a regression seen with small resource descriptors that could cause 2513an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 2514 2515AML interpreter: Implemented a new feature that allows forward references 2516from individual named references within package objects that are 2517contained within blocks of "module-level code". This provides 2518compatibility with other ACPI implementations and supports existing 2519firmware that depends on this feature. Example: 2520 2521 Name (ABCD, 1) 2522 If (ABCD) /* An If() at module-level */ 2523 { 2524 Name (PKG1, Package() 2525 { 2526 INT1 /* Forward reference to object INT1 2527*/ 2528 }) 2529 Name (INT1, 0x1234) 2530 } 2531 2532AML Interpreter: Fixed a problem with the Alias() operator where aliases 2533to some ASL objects were not handled properly. Objects affected are: 2534Mutex, Event, and OperationRegion. 2535 2536AML Debugger: Enhanced to properly handle AML Alias objects. These 2537objects have one level of indirection which was not fully supported by 2538the debugger. 2539 2540Table Manager: Added support to detect and ignore duplicate SSDTs within 2541the XSDT/RSDT. This error in the XSDT has been seen in the field. 2542 2543EFI and EDK2 support: 2544 Enabled /WX flag for MSVC builds 2545 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 2546 Added local support for 64-bit multiply and shift operations 2547 Added support to compile acpidump.efi on Windows 2548 Added OSL function stubs for interfaces not used under EFI 2549 2550Added additional support for the _DMA predefined name. _DMA returns a 2551buffer containing a resource template. This change add support within the 2552resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 2553resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 2554 2555 25562) iASL Compiler/Disassembler and Tools: 2557 2558iASL: Fixed a problem where the internal input line buffer(s) could 2559overflow if there are very long lines in the input ASL source code file. 2560Implemented buffer management that automatically increases the size of 2561the buffers as necessary. 2562 2563iASL: Added an option (-vx) to "expect" particular remarks, warnings and 2564errors. If the specified exception is not raised during compilation, the 2565compiler emits an error. This is intended to support the ASL test suite, 2566but may be useful in other contexts. 2567 2568iASL: Implemented a new predefined macro, __METHOD__, which returns a 2569string containing the name of the current control method that is being 2570compiled. 2571 2572iASL: Implemented debugger and table compiler support for the SDEI ACPI 2573table (Software Delegated Exception Interface). James Morse 2574<james.morse@arm.com> 2575 2576Unix/Linux makefiles: Added an option to disable compile optimizations. 2577The disable occurs when the NOOPT flag is set to TRUE. 2578theracermaster@gmail.com 2579 2580Acpidump: Added support for multiple DSDT and FACS tables. This can occur 2581when there are different tables for 32-bit versus 64-bit. 2582 2583Enhanced error reporting for the ASL test suite (ASLTS) by removing 2584unnecessary/verbose text, and emit the actual line number where an error 2585has occurred. These changes are intended to improve the usefulness of the 2586test suite. 2587 2588---------------------------------------- 258929 June 2017. Summary of changes for version 20170629: 2590 2591 25921) ACPICA kernel-resident subsystem: 2593 2594Tables: Implemented a deferred ACPI table verification. This is useful 2595for operating systems where the tables cannot be verified in the early 2596initialization stage due to early memory mapping limitations on some 2597architectures. Lv Zheng. 2598 2599Tables: Removed the signature validation for dynamically loaded tables. 2600Provides compatibility with other ACPI implementations. Previously, only 2601SSDT tables were allowed, as per the ACPI specification. Now, any table 2602signature can be used via the Load() operator. Lv Zheng. 2603 2604Tables: Fixed several mutex issues that could cause errors during table 2605acquisition. Lv Zheng. 2606 2607Tables: Fixed a problem where an ACPI warning could be generated if a 2608null pointer was passed to the AcpiPutTable interface. Lv Zheng. 2609 2610Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 2611AcpiPutTable interfaces. This applies to the "late stage" table loading 2612when the use of AcpiPutTable is no longer required (since the system 2613memory manager is fully running and available). Lv Zheng. 2614 2615Fixed/Reverted a regression during processing of resource descriptors 2616that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 2617exception in this case. 2618 2619Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 2620I/O Remapping specification. Robin Murphy <robin.murphy@arm.com> 2621 2622Interpreter: Fixed a possible fault if an Alias operator with an invalid 2623or duplicate target is encountered during Alias creation in 2624AcpiExCreateAlias. Alex James <theracermaster@gmail.com> 2625 2626Added an option to use designated initializers for function pointers. 2627Kees Cook <keescook@google.com> 2628 2629 26302) iASL Compiler/Disassembler and Tools: 2631 2632iASL: Allow compilation of External declarations with target pathnames 2633that refer to existing named objects within the table. Erik Schmauss. 2634 2635iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 2636FieldUnit name also is declared via External in the same table. Erik 2637Schmauss. 2638 2639iASL: Allow existing scope names within pathnames used in External 2640statements. For example: 2641 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 2642 Device (ABCD) 2643 2644iASL: IORT ACPI table: Implemented changes required to decode the new 2645Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 2646compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> 2647 2648Disassembler: Don't abort disassembly on errors from External() 2649statements. Erik Schmauss. 2650 2651Disassembler: fixed a possible fault when one of the Create*Field 2652operators references a Resource Template. ACPICA Bugzilla 1396. 2653 2654iASL: In the source code, resolved some naming inconsistences across the 2655parsing support. Fixes confusion between "Parse Op" and "Parse Node". 2656Adds a new file, aslparseop.c 2657 2658---------------------------------------- 265931 May 2017. Summary of changes for version 20170531: 2660 2661 26620) ACPI 6.2 support: 2663 2664The ACPI specification version 6.2 has been released and is available at 2665http://uefi.org/specifications 2666 2667This version of ACPICA fully supports the ACPI 6.2 specification. Changes 2668are summarized below. 2669 2670New ACPI tables (Table Compiler/Disassembler/Templates): 2671 HMAT (Heterogeneous Memory Attributes Table) 2672 WSMT (Windows SMM Security Mitigation Table) 2673 PPTT (Processor Properties Topology Table) 2674 2675New subtables for existing ACPI tables: 2676 HEST (New subtable, Arch-deferred machine check) 2677 SRAT (New subtable, Arch-specific affinity structure) 2678 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 2679 2680Simple updates for existing ACPI tables: 2681 BGRT (two new flag bits) 2682 HEST (New bit defined for several subtables, GHES_ASSIST) 2683 2684New Resource Descriptors and Resource macros (Compiler/Disassembler): 2685 PinConfig() 2686 PinFunction() 2687 PinGroup() 2688 PinGroupConfig() 2689 PinGroupFunction() 2690 New type for hardware error notification (section 18.3.2.9) 2691 2692New predefined names/methods (Compiler/Interpreter): 2693 _HMA (Heterogeneous Memory Attributes) 2694 _LSI (Label Storage Information) 2695 _LSR (Label Storage Read) 2696 _LSW (Label Storage Write) 2697 2698ASL grammar/macro changes (Compiler): 2699 For() ASL macro, implemented with the AML while operator 2700 Extensions to Concatenate operator 2701 Support for multiple definition blocks in same ASL file 2702 Clarification for Buffer operator 2703 Allow executable AML code underneath all scopes (Devices, etc.) 2704 Clarification/change for the _OSI return value 2705 ASL grammar update for reference operators 2706 Allow a zero-length string for AML filename in DefinitionBlock 2707 2708Miscellaneous: 2709 New device object notification value 2710 Remove a notify value (0x0C) for graceful shutdown 2711 New UUIDs for processor/cache properties and 2712 physical package property 2713 New _HID, ACPI0014 (Wireless Power Calibration Device) 2714 2715 27161) ACPICA kernel-resident subsystem: 2717 2718Added support to disable ACPI events on hardware-reduced platforms. 2719Eliminates error messages of the form "Could not enable fixed event". Lv 2720Zheng 2721 2722Fixed a problem using Device/Thermal objects with the ObjectType and 2723DerefOf ASL operators. This support had not been fully/properly 2724implemented. 2725 2726Fixed a problem where if a Buffer object containing a resource template 2727was longer than the actual resource template, an error was generated -- 2728even though the AML is legal. This case has been seen in the field. 2729 2730Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 2731The values for DUAL_PIC and MULTIPLE_APIC were reversed. 2732 2733Added header file changes for the TPM2 ACPI table. Update to new version 2734of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 2735 2736Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 2737These interfaces are intended to be used only in conjunction with the 2738predefined _DLM method (Device Lock Method). "This object appears in a 2739device scope when AML access to the device must be synchronized with the 2740OS environment". 2741 2742Example Code and Data Size: These are the sizes for the OS-independent 2743acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2744debug version of the code includes the debug output trace mechanism and 2745has a much larger code and data size. 2746 2747 Current Release: 2748 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 2749 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 2750 Previous Release: 2751 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2752 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2753 2754 27552) iASL Compiler/Disassembler and Tools: 2756 2757iASL: Fixed a problem where an External() declaration could not refer to 2758a Field Unit. Erik Schmauss. 2759 2760Disassembler: Improved support for the Switch/Case operators. This 2761feature will disassemble AML code back to the original Switch operators 2762when possible, instead of an If..Else sequence. David Box 2763 2764iASL and disassembler: Improved the handling of multiple extraneous 2765parentheses for both ASL input and disassembled ASL output. 2766 2767Improved the behavior of the iASL compiler and disassembler to detect 2768improper use of external declarations 2769 2770Disassembler: Now aborts immediately upon detection of an unknown AML 2771opcode. The AML parser has no real way to recover from this, and can 2772result in the creation of an ill-formed parse tree that causes errors 2773later during the disassembly. 2774 2775All tools: Fixed a problem where the Unix application OSL did not handle 2776control-c correctly. For example, a control-c could incorrectly wake the 2777debugger. 2778 2779AcpiExec: Improved the Control-C handling and added a handler for 2780segmentation faults (SIGSEGV). Supports both Windows and Unix-like 2781environments. 2782 2783Reduced the verbosity of the generic unix makefiles. Previously, each 2784compilation displayed the full set of compiler options. This has been 2785eliminated as the options are easily inspected within the makefiles. Each 2786compilation now results in a single line of output. 2787 2788---------------------------------------- 278903 March 2017. Summary of changes for version 20170303: 2790 2791 27920) ACPICA licensing: 2793 2794The licensing information at the start of each source code module has 2795been updated. In addition to the Intel license, the dual GPLv2/BSD 2796license has been added for completeness. Now, a single version of the 2797source code should be suitable for all ACPICA customers. This is the 2798major change for this release since it affects all source code modules. 2799 2800 28011) ACPICA kernel-resident subsystem: 2802 2803Fixed two issues with the common asltypes.h header that could cause 2804problems in some environments: (Kim Jung-uk) 2805 Removed typedef for YY_BUFFER_STATE ? 2806 Fixes an error with earlier versions of Flex. 2807 Removed use of FILE typedef (which is only defined in stdio.h) 2808 2809 28102) iASL Compiler/Disassembler and Tools: 2811 2812Disassembler: fixed a regression introduced in 20170224. A fix for a 2813memory leak related to resource descriptor tags (names) could fault when 2814the disassembler was generated with 64-bit compilers. 2815 2816The ASLTS test suite has been updated to implement a new testing 2817architecture. During generation of the suite from ASL source, both the 2818ASL and ASL+ compilers are now validated, as well as the disassembler 2819itself (Erik Schmauss). The architecture executes as follows: 2820 2821 For every ASL source module: 2822 Compile (legacy ASL compilation) 2823 Disassemble the resulting AML to ASL+ source code 2824 Compile the new ASL+ module 2825 Perform a binary compare on the legacy AML and the new ASL+ AML 2826 The ASLTS suite then executes normally using the AML binaries. 2827 2828---------------------------------------- 282924 February 2017. Summary of changes for version 20170224: 2830 2831 28321) ACPICA kernel-resident subsystem: 2833 2834Interpreter: Fixed two issues with the control method return value auto- 2835repair feature, where an attempt to double-delete an internal object 2836could result in an ACPICA warning (for _CID repair and others). No fault 2837occurs, however, because the attempted deletion (actually a release to an 2838internal cache) is detected and ignored via object poisoning. 2839 2840Debugger: Fixed an AML interpreter mutex issue during the single stepping 2841of control methods. If certain debugger commands are executed during 2842stepping, a mutex acquire/release error could occur. Lv Zheng. 2843 2844Fixed some issues generating ACPICA with the Intel C compiler by 2845restoring the original behavior and compiler-specific include file in 2846acenv.h. Lv Zheng. 2847 2848Example Code and Data Size: These are the sizes for the OS-independent 2849acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2850debug version of the code includes the debug output trace mechanism and 2851has a much larger code and data size. 2852 2853 Current Release: 2854 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2855 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2856 Previous Release: 2857 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 2858 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 2859 2860 28612) iASL Compiler/Disassembler and Tools: 2862 2863iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 2864tool has been designed, implemented, and included in this release. The 2865key feature of this utility is that the original comments within the 2866input ASL file are preserved during the conversion process, and included 2867within the converted ASL+ file -- thus creating a transparent conversion 2868of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 2869 2870 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 2871converted code 2872 2873iASL/Disassembler: Improved the detection and correct disassembly of 2874Switch/Case operators. This feature detects sequences of if/elseif/else 2875operators that originated from ASL Switch/Case/Default operators and 2876emits the original operators. David Box. 2877 2878iASL: Improved the IORT ACPI table support in the following areas. Lv 2879Zheng: 2880 Clear MappingOffset if the MappingCount is zero. 2881 Fix the disassembly of the SMMU GSU interrupt offset. 2882 Update the template file for the IORT table. 2883 2884Disassembler: Enhanced the detection and disassembly of resource 2885template/descriptor within a Buffer object. An EndTag descriptor is now 2886required to have a zero second byte, since all known ASL compilers emit 2887this. This helps eliminate incorrect decisions when a buffer is 2888disassembled (false positives on resource templates). 2889 2890---------------------------------------- 289119 January 2017. Summary of changes for version 20170119: 2892 2893 28941) General ACPICA software: 2895 2896Entire source code base: Added the 2017 copyright to all source code 2897legal/licensing module headers and utility/tool signons. This includes 2898the standard Linux dual-license header. This affects virtually every file 2899in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 2900the ACPICA test suite. 2901 2902 29032) iASL Compiler/Disassembler and Tools: 2904 2905iASL: Removed/fixed an inadvertent remark when a method argument 2906containing a reference is used as a target operand within the method (and 2907never used as a simple argument), as in the example below. Jeffrey Hugo. 2908 2909 dsdt.asl 1507: Store(0x1, Arg0) 2910 Remark 2146 - ^ Method Argument is never used (Arg0) 2911 2912All tools: Removed the bit width of the compiler that generated the tool 2913from the common signon for all user space tools. This proved to be 2914confusing and unnecessary. This includes similar removal of HARDWARE_NAME 2915from the generic makefiles (Thomas Petazzoni). Example below. 2916 2917 Old: 2918 ASL+ Optimizing Compiler version 20170119-32 2919 ASL+ Optimizing Compiler version 20170119-64 2920 2921 New: 2922 ASL+ Optimizing Compiler version 20170119 2923 2924---------------------------------------- 292522 December 2016. Summary of changes for version 20161222: 2926 2927 29281) ACPICA kernel-resident subsystem: 2929 2930AML Debugger: Implemented a new mechanism to simplify and enhance 2931debugger integration into all environments, including kernel debuggers 2932and user-space utilities, as well as remote debug services. This 2933mechanism essentially consists of new OSL interfaces to support debugger 2934initialization/termination, as well as wait/notify interfaces to perform 2935the debugger handshake with the host. Lv Zheng. 2936 2937 New OSL interfaces: 2938 AcpiOsInitializeDebugger (void) 2939 AcpiOsTerminateDebugger (void) 2940 AcpiOsWaitCommandReady (void) 2941 AcpiOsNotifyCommandComplete (void) 2942 2943 New OS services layer: 2944 osgendbg.c -- Example implementation, and used for AcpiExec 2945 2946Update for Generic Address Space (GAS) support: Although the AccessWidth 2947and/or BitOffset fields of the GAS are not often used, this change now 2948fully supports these fields. This affects the internal support for FADT 2949registers, registers in other ACPI data tables, and the AcpiRead and 2950AcpiWrite public interfaces. Lv Zheng. 2951 2952Sleep support: In order to simplify integration of ACPI sleep for the 2953various host operating systems, a new OSL interface has been introduced. 2954AcpiOsEnterSleep allows the host to perform any required operations 2955before the final write to the sleep control register(s) is performed by 2956ACPICA. Lv Zheng. 2957 2958 New OSL interface: 2959 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 2960 2961 Called from these internal interfaces: 2962 AcpiHwLegacySleep 2963 AcpiHwExtendedSleep 2964 2965EFI support: Added a very small EFI/ACPICA example application. Provides 2966a simple demo for EFI integration, as well as assisting with resolution 2967of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 2968 2969 source/tools/efihello/efihello.c 2970 2971Local C library: Implemented several new functions to enhance ACPICA 2972portability, for environments where these clib functions are not 2973available (such as EFI). Lv Zheng: 2974 putchar 2975 getchar 2976 strpbrk 2977 strtok 2978 memmove 2979 2980Fixed a regression where occasionally a valid resource descriptor was 2981incorrectly detected as invalid at runtime, and a 2982AE_AML_NO_RESOURCE_END_TAG was returned. 2983 2984Fixed a problem with the recently implemented support that enables 2985control method invocations as Target operands to many ASL operators. 2986Warnings of this form: "Needed type [Reference], found [Processor]" were 2987seen at runtime for some method invocations. 2988 2989Example Code and Data Size: These are the sizes for the OS-independent 2990acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2991debug version of the code includes the debug output trace mechanism and 2992has a much larger code and data size. 2993 2994 Current Release: 2995 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 2996 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 2997 Previous Release: 2998 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 2999 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 3000 3001 30022) iASL Compiler/Disassembler and Tools: 3003 3004Disassembler: Enhanced output by adding the capability to detect and 3005disassemble ASL Switch/Case statements back to the original ASL source 3006code instead of if/else blocks. David Box. 3007 3008AcpiHelp: Split a large file into separate files based upon 3009functionality/purpose. New files are: 3010 ahaml.c 3011 ahasl.c 3012 3013---------------------------------------- 301417 November 2016. Summary of changes for version 20161117: 3015 3016 30171) ACPICA kernel-resident subsystem: 3018 3019Table Manager: Fixed a regression introduced in 20160729, "FADT support 3020cleanup". This was an attempt to remove all references in the source to 3021the FADT version 2, which never was a legal version number. It was 3022skipped because it was an early version of 64-bit support that was 3023eventually abandoned for the current 64-bit support. 3024 3025Interpreter: Fixed a problem where runtime implicit conversion was 3026incorrectly disabled for the ASL operators below. This brings the 3027behavior into compliance with the ACPI specification: 3028 FromBCD 3029 ToBCD 3030 ToDecimalString 3031 ToHexString 3032 ToInteger 3033 ToBuffer 3034 3035Table Manager: Added a new public interface, AcpiPutTable, used to 3036release and free an ACPI table returned by AcpiGetTable and related 3037interfaces. Lv Zheng. 3038 3039Example Code and Data Size: These are the sizes for the OS-independent 3040acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3041debug version of the code includes the debug output trace mechanism and 3042has a much larger code and data size. 3043 3044 Current Release: 3045 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 3046 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 3047 Previous Release: 3048 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 3049 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 3050 3051 30522) iASL Compiler/Disassembler and Tools: 3053 3054Disassembler: Fixed a regression for disassembly of Resource Template. 3055Detection of templates in the AML stream missed some types of templates. 3056 3057iASL: Fixed a problem where an Access Size error was returned for the PCC 3058address space when the AccessSize of the GAS register is greater than a 3059DWORD. Hoan Tran. 3060 3061iASL: Implemented several grammar changes for the operators below. These 3062changes are slated for the next version of the ACPI specification: 3063 RefOf - Disallow method invocation as an operand 3064 CondRefOf - Disallow method invocation as an operand 3065 DerefOf - Disallow operands that use the result from operators 3066that 3067 do not return a reference (Changed TermArg to 3068SuperName). 3069 3070iASL: Control method invocations are now allowed for Target operands, as 3071per the ACPI specification. Removed error for using a control method 3072invocation as a Target operand. 3073 3074Disassembler: Improved detection of Resource Templates, Unicode, and 3075Strings within Buffer objects. These subtypes do not contain a specific 3076opcode to indicate the originating ASL code, and they must be detected by 3077other means within the disassembler. 3078 3079iASL: Implemented an optimization improvement for 32-bit ACPI tables 3080(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 3081only after 64-bit to 32-bit truncation. A truncation warning message is 3082still emitted, however. 3083 3084AcpiXtract: Implemented handling for both types of line terminators (LF 3085or CR/LF) so that it can accept AcpiDump output files from any system. 3086Peter Wu. 3087 3088AcpiBin: Added two new options for comparing AML files: 3089 -a: compare and display ALL mismatches 3090 -o: start compare at this offset into the second file 3091 3092---------------------------------------- 309330 September 2016. Summary of changes for version 20160930: 3094 3095 30961) ACPICA kernel-resident subsystem: 3097 3098Fixed a regression in the internal AcpiTbFindTable function where a non 3099AE_OK exception could inadvertently be returned even if the function did 3100not fail. This problem affects the following operators: 3101 DataTableRegion 3102 LoadTable 3103 3104Fixed a regression in the LoadTable operator where a load to any 3105namespace location other than the root no longer worked properly. 3106 3107Increased the maximum loop count value that will result in the 3108AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 3109prevent infinite loops within the AML interpreter and thus the host OS 3110kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 31111,048,575). 3112 3113Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 3114acpixf.h file. This allows hosts to easily configure the maximum loop 3115count at runtime. 3116 3117Removed an illegal character in the strtoul64.c file. This character 3118caused errors with some C compilers. 3119 3120Example Code and Data Size: These are the sizes for the OS-independent 3121acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3122debug version of the code includes the debug output trace mechanism and 3123has a much larger code and data size. 3124 3125 Current Release: 3126 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 3127 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 3128 Previous Release: 3129 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 3130 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 3131 3132 31332) iASL Compiler/Disassembler and Tools: 3134 3135Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 3136the simpler ASL ElseIf keyword. During the conversion, a trailing If 3137block could be lost and missing from the disassembled output. 3138 3139iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 3140the missing rule caused a parse error when using the Index operator as an 3141operand to ObjectType. This construct now compiles properly. Example: 3142 ObjectType(PKG1[4]). 3143 3144iASL: Correctly handle unresolved symbols in the hardware map file (-lm 3145option). Previously, unresolved symbols could cause a protection fault. 3146Such symbols are now marked as unresolved in the map file. 3147 3148iASL: Implemented support to allow control method invocations as an 3149operand to the ASL DeRefOf operator. Example: 3150 DeRefOf(MTH1(Local0)) 3151 3152Disassembler: Improved support for the ToPLD ASL macro. Detection of a 3153possible _PLD buffer now includes examination of both the normal buffer 3154length (16 or 20) as well as the surrounding AML package length. 3155 3156Disassembler: Fixed a problem with the decoding of complex expressions 3157within the Divide operator for ASL+. For the case where both the quotient 3158and remainder targets are specified, the entire statement cannot be 3159disassembled. Previously, the output incorrectly contained a mix of ASL- 3160and ASL+ operators. This mixed statement causes a syntax error when 3161compiled. Example: 3162 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 3163disassembled to: 3164 Divide (INT1 + 6, 128, RSLT, QUOT) 3165 3166iASL/Tools: Added support to process AML and non-AML ACPI tables 3167consistently. For the disassembler and AcpiExec, allow all types of ACPI 3168tables (AML and data tables). For the iASL -e option, allow only AML 3169tables (DSDT/SSDT). 3170 3171---------------------------------------- 317231 August 2016. Summary of changes for version 20160831: 3173 3174 31751) ACPICA kernel-resident subsystem: 3176 3177Improve support for the so-called "module-level code", which is defined 3178to be math, logical and control AML opcodes that appear outside of any 3179control method. This change improves the support by adding more opcodes 3180that can be executed in the manner. Some other issues have been solved, 3181and the ASL grammar changes to support such code under all scope 3182operators (Device, etc.) are complete. Lv Zheng. 3183 3184UEFI support: these OSL functions have been implemented. This is an 3185additional step toward supporting the AcpiExec utility natively (with 3186full hardware access) under UEFI. Marcelo Ferreira. 3187 AcpiOsReadPciConfiguration 3188 AcpiOsWritePciConfiguration 3189 3190Fixed a possible mutex error during control method auto-serialization. Lv 3191Zheng. 3192 3193Updated support for the Generic Address Structure by fully implementing 3194all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 3195Zheng. 3196 3197Updated the return value for the internal _OSI method. Instead of 31980xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 3199for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 3200implementations, and will be reflected and clarified in the next version 3201of the ACPI specification. 3202 3203Implemented two new table events that can be passed to an ACPICA table 3204handler. These events are used to indicate a table installation or 3205uninstallation. These events are used in addition to existed table load 3206and unload events. Lv Zheng. 3207 3208Implemented a cleanup for all internal string-to-integer conversions. 3209Consolidate multiple versions of this functionality and limit possible 3210bases to either 10 or 16 to simplify the code. Adds a new file, 3211utstrtoul64. 3212 3213Cleanup the inclusion order of the various compiler-specific headers. 3214This simplifies build configuration management. The compiler-specific 3215headers are now split out from the host-specific headers. Lv Zheng. 3216 3217Example Code and Data Size: These are the sizes for the OS-independent 3218acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3219debug version of the code includes the debug output trace mechanism and 3220has a much larger code and data size. 3221 3222 Current Release: 3223 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 3224 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 3225 3226 32272) iASL Compiler/Disassembler and Tools: 3228 3229iASL/AcpiExec: Added a command line option to display the build date/time 3230of the tool (-vd). This can be useful to verify that the correct version 3231of the tools are being used. 3232 3233AML Debugger: Implemented a new subcommand ("execute predef") to execute 3234all predefined control methods and names within the current namespace. 3235This can be useful for debugging problems with ACPI tables and the ACPI 3236namespace. 3237 3238---------------------------------------- 323929 July 2016. Summary of changes for version 20160729: 3240 3241 32421) ACPICA kernel-resident subsystem: 3243 3244Implemented basic UEFI support for the various ACPICA tools. This 3245includes: 32461) An OSL to implement the various AcpiOs* interfaces on UEFI. 32472) Support to obtain the ACPI tables on UEFI. 32483) Local implementation of required C library functions not available on 3249UEFI. 32504) A front-end (main) function for the tools for UEFI-related 3251initialization. 3252 3253The initial deployment of this support is the AcpiDump utility executing 3254as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 3255Current environments supported are Linux/Unix. MSVC generation is not 3256supported at this time. See the generate/efi/README file for build 3257instructions. Lv Zheng. 3258 3259Future plans include porting the AcpiExec utility to execute natively on 3260the platform with I/O and memory access. This will allow viewing/dump of 3261the platform namespace and native execution of ACPI control methods that 3262access the actual hardware. To fully implement this support, the OSL 3263functions below must be implemented with UEFI interfaces. Any community 3264help in the implementation of these functions would be appreciated: 3265 AcpiOsReadPort 3266 AcpiOsWritePort 3267 AcpiOsReadMemory 3268 AcpiOsWriteMemory 3269 AcpiOsReadPciConfiguration 3270 AcpiOsWritePciConfiguration 3271 3272Restructured and standardized the C library configuration for ACPICA, 3273resulting in the various configuration options below. This includes a 3274global restructuring of the compiler-dependent and platform-dependent 3275include files. These changes may affect the existing platform-dependent 3276configuration files on some hosts. Lv Zheng. 3277 3278The current C library configuration options appear below. For any issues, 3279it may be helpful to examine the existing compiler-dependent and 3280platform-dependent files as examples. Lv Zheng. 3281 32821) Linux kernel: 3283 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 3284library. 3285 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 32862) Unix/Windows/BSD applications: 3287 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 3288library. 3289 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 32903) UEFI applications: 3291 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 3292library. 3293 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 32944) UEFI applications (EDK2/StdLib): 3295 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 3296 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 3297 3298 3299AML interpreter: "module-level code" support. Allows for execution of so- 3300called "executable" AML code (math/logical operations, etc.) outside of 3301control methods not just at the module level (top level) but also within 3302any scope declared outside of a control method - Scope{}, Device{}, 3303Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 3304 3305Simplified the configuration of the "maximum AML loops" global option by 3306adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 3307modified at runtime. 3308 3309 3310Example Code and Data Size: These are the sizes for the OS-independent 3311acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3312debug version of the code includes the debug output trace mechanism and 3313has a much larger code and data size. 3314 3315 Current Release: 3316 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 3317 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 3318 3319 33202) iASL Compiler/Disassembler and Tools: 3321 3322iASL: Add full support for the RASF ACPI table (RAS Features Table). 3323Includes disassembler, data table compiler, and header support. 3324 3325iASL Expand "module-level code" support. Allows for 3326compilation/disassembly of so-called "executable" AML code (math/logical 3327operations, etc.) outside of control methods not just at the module level 3328(top level) but also within any scope declared outside of a control 3329method - Scope{}, Device{}, Processor{}, PowerResource{}, and 3330ThermalZone{}. 3331 3332AcpiDump: Added support for dumping all SSDTs on newer versions of 3333Windows. These tables are now easily available -- SSDTs are not available 3334through the registry on older versions. 3335 3336---------------------------------------- 333727 May 2016. Summary of changes for version 20160527: 3338 3339 33401) ACPICA kernel-resident subsystem: 3341 3342Temporarily reverted the new arbitrary bit length/alignment support in 3343AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 3344a number of regressions with the new code that need to be fully resolved 3345and tested before this support can be finally integrated into ACPICA. 3346Apologies for any inconveniences these issues may have caused. 3347 3348The ACPI message macros are not configurable (ACPI_MSG_ERROR, 3349ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 3350and ACPI_MSG_BIOS_WARNING). Lv Zheng. 3351 3352Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 3353option. Adds a new return macro, return_STR. Junk-uk Kim. 3354 3355Example Code and Data Size: These are the sizes for the OS-independent 3356acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3357debug version of the code includes the debug output trace mechanism and 3358has a much larger code and data size. 3359 3360 Current Release: 3361 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 3362 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 3363 Previous Release: 3364 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 3365 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 3366 3367---------------------------------------- 336822 April 2016. Summary of changes for version 20160422: 3369 33701) ACPICA kernel-resident subsystem: 3371 3372Fixed a regression in the GAS (generic address structure) arbitrary bit 3373support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 3374and incorrect return values. Lv Zheng. ACPICA BZ 1270. 3375 3376ACPI 6.0: Added support for new/renamed resource macros. One new argument 3377was added to each of these macros, and the original name has been 3378deprecated. The AML disassembler will always disassemble to the new 3379names. Support for the new macros was added to iASL, disassembler, 3380resource manager, and the acpihelp utility. ACPICA BZ 1274. 3381 3382 I2cSerialBus -> I2cSerialBusV2 3383 SpiSerialBus -> SpiSerialBusV2 3384 UartSerialBus -> UartSerialBusV2 3385 3386ACPI 6.0: Added support for a new integer field that was appended to the 3387package object returned by the _BIX method. This adds iASL compile-time 3388and AML runtime error checking. ACPICA BZ 1273. 3389 3390ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 3391Subspace Type2" (Headers, Disassembler, and data table compiler). 3392 3393Example Code and Data Size: These are the sizes for the OS-independent 3394acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3395debug version of the code includes the debug output trace mechanism and 3396has a much larger code and data size. 3397 3398 Current Release: 3399 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 3400 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 3401 Previous Release: 3402 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 3403 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 3404 3405 34062) iASL Compiler/Disassembler and Tools: 3407 3408iASL: Implemented an ASL grammar extension to allow/enable executable 3409"module-level code" to be created and executed under the various 3410operators that create new scopes. This type of AML code is already 3411supported in all known AML interpreters, and the grammar change will 3412appear in the next version of the ACPI specification. Simplifies the 3413conditional runtime creation of named objects under these object types: 3414 3415 Device 3416 PowerResource 3417 Processor 3418 Scope 3419 ThermalZone 3420 3421iASL: Implemented a new ASL extension, a "For" loop macro to add greater 3422ease-of-use to the ASL language. The syntax is similar to the 3423corresponding C operator, and is implemented with the existing AML While 3424opcode -- thus requiring no changes to existing AML interpreters. 3425 3426 For (Initialize, Predicate, Update) {TermList} 3427 3428Grammar: 3429 ForTerm := 3430 For ( 3431 Initializer // Nothing | TermArg => ComputationalData 3432 Predicate // Nothing | TermArg => ComputationalData 3433 Update // Nothing | TermArg => ComputationalData 3434 ) {TermList} 3435 3436 3437iASL: The _HID/_ADR detection and validation has been enhanced to search 3438under conditionals in order to allow these objects to be conditionally 3439created at runtime. 3440 3441iASL: Fixed several issues with the constant folding feature. The 3442improvement allows better detection and resolution of statements that can 3443be folded at compile time. ACPICA BZ 1266. 3444 3445iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 3446conversion to the ASL ElseIf operator where incorrect ASL code could be 3447generated. 3448 3449iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 3450sometimes an extra (and extraneous) set of parentheses were emitted for 3451some combinations of operators. Although this did not cause any problems 3452with recompilation of the disassembled code, it made the code more 3453difficult to read. David Box. ACPICA BZ 1231. 3454 3455iASL: Changed to ignore the unreferenced detection for predefined names 3456of resource descriptor elements, when the resource descriptor is 3457created/defined within a control method. 3458 3459iASL: Disassembler: Fix a possible fault with externally declared Buffer 3460objects. 3461 3462---------------------------------------- 346318 March 2016. Summary of changes for version 20160318: 3464 34651) ACPICA kernel-resident subsystem: 3466 3467Added support for arbitrary bit lengths and bit offsets for registers 3468defined by the Generic Address Structure. Previously, only aligned bit 3469lengths of 8/16/32/64 were supported. This was sufficient for many years, 3470but recently some machines have been seen that require arbitrary bit- 3471level support. ACPICA BZ 1240. Lv Zheng. 3472 3473Fixed an issue where the \_SB._INI method sometimes must be evaluated 3474before any _REG methods are evaluated. Lv Zheng. 3475 3476Implemented several changes related to ACPI table support 3477(Headers/Disassembler/TableCompiler): 3478NFIT: For ACPI 6.1, updated to add some additional new fields and 3479constants. 3480FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 34816). 3482DMAR: Added new constants per the 10/2014 DMAR spec. 3483IORT: Added new subtable per the 10/2015 IORT spec. 3484HEST: For ACPI 6.1, added new constants and new subtable. 3485DBG2: Added new constants per the 12/2015 DBG2 spec. 3486FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 3487ACPICA BZ 1249. 3488ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 3489 3490Updated header support for the DMAR table to match the current version of 3491the related spec. 3492 3493Added extensions to the ASL Concatenate operator to allow any ACPI object 3494to be passed as an operand. Any object other than Integer/String/Buffer 3495simply returns a string containing the object type. This extends the 3496usefulness of the Printf macros. Previously, Concatenate would abort the 3497control method if a non-data object was encountered. 3498 3499ACPICA source code: Deployed the C "const" keyword across the source code 3500where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 3501 3502Example Code and Data Size: These are the sizes for the OS-independent 3503acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3504debug version of the code includes the debug output trace mechanism and 3505has a much larger code and data size. 3506 3507 Current Release: 3508 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 3509 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 3510 Previous Release: 3511 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3512 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3513 3514 35152) iASL Compiler/Disassembler and Tools: 3516 3517iASL/Disassembler: Improved the heuristic used to determine the number of 3518arguments for an externally defined control method (a method in another 3519table). Although this is an improvement, there is no deterministic way to 3520"guess" the number of method arguments. Only the ACPI 6.0 External opcode 3521will completely solve this problem as it is deployed (automatically) in 3522newer BIOS code. 3523 3524iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 3525statements that could cause errors when the disassembled file is 3526compiled. ACPICA BZ 1243. David Box. 3527 3528iASL: Fixed a regression caused by the merger of the two versions of the 3529local strtoul64. Because of a dependency on a global variable, strtoul64 3530could return an error for integers greater than a 32-bit value. ACPICA BZ 35311260. 3532 3533iASL: Fixed a regression where a fault could occur for an ASL Return 3534statement if it invokes a control method that is not resolved. ACPICA BZ 35351264. 3536 3537AcpiXtract: Improved input file validation: detection of binary files and 3538non-acpidump text files. 3539 3540---------------------------------------- 354112 February 2016. Summary of changes for version 20160212: 3542 35431) ACPICA kernel-resident subsystem: 3544 3545Implemented full support for the ACPI 6.1 specification (released in 3546January). This version of the specification is available at: 3547http://www.uefi.org/specifications 3548 3549Only a relatively small number of changes were required in ACPICA to 3550support ACPI 6.1, in these areas: 3551- New predefined names 3552- New _HID values 3553- A new subtable for HEST 3554- A few other header changes for new values 3555 3556Ensure \_SB_._INI is executed before any _REG methods are executed. There 3557appears to be existing BIOS code that relies on this behavior. Lv Zheng. 3558 3559Reverted a change made in version 20151218 which enabled method 3560invocations to be targets of various ASL operators (SuperName and Target 3561grammar elements). While the new behavior is supported by the ACPI 3562specification, other AML interpreters do not support this behavior and 3563never will. The ACPI specification will be updated for ACPI 6.2 to remove 3564this support. Therefore, the change was reverted to the original ACPICA 3565behavior. 3566 3567ACPICA now supports the GCC 6 compiler. 3568 3569Current Release: (Note: build changes increased sizes) 3570 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3571 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3572Previous Release: 3573 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3574 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 3575 3576 35772) iASL Compiler/Disassembler and Tools: 3578 3579Completed full support for the ACPI 6.0 External() AML opcode. The 3580compiler emits an external AML opcode for each ASL External statement. 3581This opcode is used by the disassembler to assist with the disassembly of 3582external control methods by specifying the required number of arguments 3583for the method. AML interpreters do not use this opcode. To ensure that 3584interpreters do not even see the opcode, a block of one or more external 3585opcodes is surrounded by an "If(0)" construct. As this feature becomes 3586commonly deployed in BIOS code, the ability of disassemblers to correctly 3587disassemble AML code will be greatly improved. David Box. 3588 3589iASL: Implemented support for an optional cross-reference output file. 3590The -lx option will create a the cross-reference file with the suffix 3591"xrf". Three different types of cross-reference are created in this file: 3592- List of object references made from within each control method 3593- Invocation (caller) list for each user-defined control method 3594- List of references to each non-method object in the namespace 3595 3596iASL: Method invocations as ASL Target operands are now disallowed and 3597flagged as errors in preparation for ACPI 6.2 (see the description of the 3598problem above). 3599 3600---------------------------------------- 36018 January 2016. Summary of changes for version 20160108: 3602 36031) ACPICA kernel-resident subsystem: 3604 3605Updated all ACPICA copyrights and signons to 2016: Added the 2016 3606copyright to all source code module headers and utility/tool signons. 3607This includes the standard Linux dual-license header. This affects 3608virtually every file in the ACPICA core subsystem, iASL compiler, all 3609ACPICA utilities, and the ACPICA test suite. 3610 3611Fixed a regression introduced in version 20151218 concerning the 3612execution of so-called module-level ASL/AML code. Namespace objects 3613created under a module-level If() construct were not properly/fully 3614entered into the namespace and could cause an interpreter fault when 3615accessed. 3616 3617Example Code and Data Size: These are the sizes for the OS-independent 3618acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3619debug version of the code includes the debug output trace mechanism and 3620has a much larger code and data size. 3621 3622Current Release: 3623 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3624 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 3625 Previous Release: 3626 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3627 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3628 3629 36302) iASL Compiler/Disassembler and Tools: 3631 3632Fixed a problem with the compilation of the GpioIo and GpioInt resource 3633descriptors. The _PIN field name was incorrectly defined to be an array 3634of 32-bit values, but the _PIN values are in fact 16 bits each. This 3635would cause incorrect bit width warnings when using Word (16-bit) fields 3636to access the descriptors. 3637 3638 3639---------------------------------------- 364018 December 2015. Summary of changes for version 20151218: 3641 36421) ACPICA kernel-resident subsystem: 3643 3644Implemented per-AML-table execution of "module-level code" as individual 3645ACPI tables are loaded into the namespace during ACPICA initialization. 3646In other words, any module-level code within an AML table is executed 3647immediately after the table is loaded, instead of batched and executed 3648after all of the tables have been loaded. This provides compatibility 3649with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 3650David Box. 3651 3652To fully support the feature above, the default operation region handlers 3653for the SystemMemory, SystemIO, and PCI_Config address spaces are now 3654installed before any ACPI tables are loaded. This enables module-level 3655code to access these address spaces during the table load and module- 3656level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 3657Box. 3658 3659Implemented several changes to the internal _REG support in conjunction 3660with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 3661utilities for the changes above. Although these tools were changed, host 3662operating systems that simply use the default handlers for SystemMemory, 3663SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 3664 3665For example, in the code below, DEV1 is conditionally added to the 3666namespace by the DSDT via module-level code that accesses an operation 3667region. The SSDT references DEV1 via the Scope operator. DEV1 must be 3668created immediately after the DSDT is loaded in order for the SSDT to 3669successfully reference DEV1. Previously, this code would cause an 3670AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 3671fully supported by ACPICA. 3672 3673 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 3674 { 3675 OperationRegion (OPR1, SystemMemory, 0x400, 32) 3676 Field (OPR1, AnyAcc, NoLock, Preserve) 3677 { 3678 FLD1, 1 3679 } 3680 If (FLD1) 3681 { 3682 Device (\DEV1) 3683 { 3684 } 3685 } 3686 } 3687 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 3688 { 3689 External (\DEV1, DeviceObj) 3690 Scope (\DEV1) 3691 { 3692 } 3693 } 3694 3695Fixed an AML interpreter problem where control method invocations were 3696not handled correctly when the invocation was itself a SuperName argument 3697to another ASL operator. In these cases, the method was not invoked. 3698ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 3699argument: 3700 Store 3701 Acquire, Wait 3702 CondRefOf, RefOf 3703 Decrement, Increment 3704 Load, Unload 3705 Notify 3706 Signal, Release, Reset 3707 SizeOf 3708 3709Implemented automatic String-to-ObjectReference conversion support for 3710packages returned by predefined names (such as _DEP). A common BIOS error 3711is to add double quotes around an ObjectReference namepath, which turns 3712the reference into an unexpected string object. This support detects the 3713problem and corrects it before the package is returned to the caller that 3714invoked the method. Lv Zheng. 3715 3716Implemented extensions to the Concatenate operator. Concatenate now 3717accepts any type of object, it is not restricted to simply 3718Integer/String/Buffer. For objects other than these 3 basic data types, 3719the argument is treated as a string containing the name of the object 3720type. This expands the utility of Concatenate and the Printf/Fprintf 3721macros. ACPICA BZ 1222. 3722 3723Cleaned up the output of the ASL Debug object. The timer() value is now 3724optional and no longer emitted by default. Also, the basic data types of 3725Integer/String/Buffer are simply emitted as their values, without a data 3726type string -- since the data type is obvious from the output. ACPICA BZ 37271221. 3728 3729Example Code and Data Size: These are the sizes for the OS-independent 3730acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3731debug version of the code includes the debug output trace mechanism and 3732has a much larger code and data size. 3733 3734 Current Release: 3735 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3736 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3737 Previous Release: 3738 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3739 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3740 3741 37422) iASL Compiler/Disassembler and Tools: 3743 3744iASL: Fixed some issues with the ASL Include() operator. This operator 3745was incorrectly defined in the iASL parser rules, causing a new scope to 3746be opened for the code within the include file. This could lead to 3747several issues, including allowing ASL code that is technically illegal 3748and not supported by AML interpreters. Note, this does not affect the 3749related #include preprocessor operator. ACPICA BZ 1212. 3750 3751iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 3752operator is essentially an ASL macro since there is no AML opcode 3753associated with it. The code emitted by the iASL compiler for ElseIf is 3754an Else opcode followed immediately by an If opcode. The disassembler 3755will now emit an ElseIf if it finds an Else immediately followed by an 3756If. This simplifies the decoded ASL, especially for deeply nested 3757If..Else and large Switch constructs. Thus, the disassembled code more 3758closely follows the original source ASL. ACPICA BZ 1211. Example: 3759 3760 Old disassembly: 3761 Else 3762 { 3763 If (Arg0 == 0x02) 3764 { 3765 Local0 = 0x05 3766 } 3767 } 3768 3769 New disassembly: 3770 ElseIf (Arg0 == 0x02) 3771 { 3772 Local0 = 0x05 3773 } 3774 3775AcpiExec: Added support for the new module level code behavior and the 3776early region installation. This required a small change to the 3777initialization, since AcpiExec must install its own operation region 3778handlers. 3779 3780AcpiExec: Added support to make the debug object timer optional. Default 3781is timer disabled. This cleans up the debug object output -- the timer 3782data is rarely used. 3783 3784AcpiExec: Multiple ACPI tables are now loaded in the order that they 3785appear on the command line. This can be important when there are 3786interdependencies/references between the tables. 3787 3788iASL/Templates. Add support to generate template files with multiple 3789SSDTs within a single output file. Also added ommand line support to 3790specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 37911223, 1225. 3792 3793 3794---------------------------------------- 379524 November 2015. Summary of changes for version 20151124: 3796 37971) ACPICA kernel-resident subsystem: 3798 3799Fixed a possible regression for a previous update to FADT handling. The 3800FADT no longer has a fixed table ID, causing some issues with code that 3801was hardwired to a specific ID. Lv Zheng. 3802 3803Fixed a problem where the method auto-serialization could interfere with 3804the current SyncLevel. This change makes the auto-serialization support 3805transparent to the SyncLevel support and management. 3806 3807Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 3808interface is intended for early access to the namespace during the 3809initial namespace device discovery walk. The _SUB method has been seen to 3810access operation regions in some cases, causing errors because the 3811operation regions are not fully initialized. 3812 3813AML Debugger: Fixed some issues with the terminate/quit/exit commands 3814that can cause faults. Lv Zheng. 3815 3816AML Debugger: Add thread ID support so that single-step mode only applies 3817to the AML Debugger thread. This prevents runtime errors within some 3818kernels. Lv Zheng. 3819 3820Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 3821methods that are invoked by this interface are optional, removed warnings 3822emitted for the case where one or more of these methods do not exist. 3823ACPICA BZ 1208, original change by Prarit Bhargava. 3824 3825Made a major pass through the entire ACPICA source code base to 3826standardize formatting that has diverged a bit over time. There are no 3827functional changes, but this will of course cause quite a few code 3828differences from the previous ACPICA release. 3829 3830Example Code and Data Size: These are the sizes for the OS-independent 3831acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3832debug version of the code includes the debug output trace mechanism and 3833has a much larger code and data size. 3834 3835 Current Release: 3836 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3837 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3838 Previous Release: 3839 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3840 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3841 3842 38432) iASL Compiler/Disassembler and Tools: 3844 3845iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 3846definition blocks within a single ASL file and the resulting AML file. 3847Support for this type of file was also added to the various tools that 3848use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 3849example code below shows two definition blocks within the same file: 3850 3851 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 38520x12345678) 3853 { 3854 } 3855 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 3856 { 3857 } 3858 3859iASL: Enhanced typechecking for the Name() operator. All expressions for 3860the value of the named object must be reduced/folded to a single constant 3861at compile time, as per the ACPI specification (the AML definition of 3862Name()). 3863 3864iASL: Fixed some code indentation issues for the -ic and -ia options (C 3865and assembly headers). Now all emitted code correctly begins in column 1. 3866 3867iASL: Added an error message for an attempt to open a Scope() on an 3868object defined in an SSDT. The DSDT is always loaded into the namespace 3869first, so any attempt to open a Scope on an SSDT object will fail at 3870runtime. 3871 3872 3873---------------------------------------- 387430 September 2015. Summary of changes for version 20150930: 3875 38761) ACPICA kernel-resident subsystem: 3877 3878Debugger: Implemented several changes and bug fixes to assist support for 3879the in-kernel version of the AML debugger. Lv Zheng. 3880- Fix the "predefined" command for in-kernel debugger. 3881- Do not enter debug command loop for the help and version commands. 3882- Disallow "execute" command during execution/single-step of a method. 3883 3884Interpreter: Updated runtime typechecking for all operators that have 3885target operands. The operand is resolved and validated that it is legal. 3886For example, the target cannot be a non-data object such as a Device, 3887Mutex, ThermalZone, etc., as per the ACPI specification. 3888 3889Debugger: Fixed the double-mutex user I/O handshake to work when local 3890deadlock detection is enabled. 3891 3892Debugger: limited display of method locals and arguments (LocalX and 3893ArgX) to only those that have actually been initialized. This prevents 3894lines of extraneous output. 3895 3896Updated the definition of the NFIT table to correct the bit polarity of 3897one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 3898 3899Example Code and Data Size: These are the sizes for the OS-independent 3900acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3901debug version of the code includes the debug output trace mechanism and 3902has a much larger code and data size. 3903 3904 Current Release: 3905 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3906 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3907 Previous Release: 3908 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3909 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3910 3911 39122) iASL Compiler/Disassembler and Tools: 3913 3914iASL: Improved the compile-time typechecking for operands of many of the 3915ASL operators: 3916 3917-- Added an option to disable compiler operand/operator typechecking (- 3918ot). 3919 3920-- For the following operators, the TermArg operands are now validated 3921when possible to be Integer data objects: BankField, OperationRegion, 3922DataTableRegion, Buffer, and Package. 3923 3924-- Store (Source, Target): Both the source and target operands are 3925resolved and checked that the operands are both legal. For example, 3926neither operand can be a non-data object such as a Device, Mutex, 3927ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 3928operator can be used to store an object to any type of target object. 3929 3930-- Store (Source, Target): If the source is a Package object, the target 3931must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 3932is a Package, the source must also be a Package. 3933 3934-- Store (Source, Target): A warning is issued if the source and target 3935resolve to the identical named object. 3936 3937-- Store (Source, <method invocation>): An error is generated for the 3938target method invocation, as this construct is not supported by the AML 3939interpreter. 3940 3941-- For all ASL math and logic operators, the target operand must be a 3942data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 3943includes the function return value also. 3944 3945-- External declarations are also included in the typechecking where 3946possible. External objects defined using the UnknownObj keyword cannot be 3947typechecked, however. 3948 3949iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 3950operator: 3951- Legacy code: Index(PKG1, 3) 3952- New ASL+ code: PKG1[3] 3953This completes the ACPI 6.0 ASL+ support as it was the only operator not 3954supported. 3955 3956iASL: Fixed the file suffix for the preprocessor output file (.i). Two 3957spaces were inadvertently appended to the filename, causing file access 3958and deletion problems on some systems. 3959 3960ASL Test Suite (ASLTS): Updated the master makefile to generate all 3961possible compiler output files when building the test suite -- thus 3962exercising these features of the compiler. These files are automatically 3963deleted when the test suite exits. 3964 3965 3966---------------------------------------- 396718 August 2015. Summary of changes for version 20150818: 3968 39691) ACPICA kernel-resident subsystem: 3970 3971Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 3972Zheng. ACPICA BZ 1186. 3973 3974Completed development to ensure that the ACPICA Disassembler and Debugger 3975are fully standalone components of ACPICA. Removed cross-component 3976dependences. Lv Zheng. 3977 3978The max-number-of-AML-loops is now runtime configurable (previously was 3979compile-time only). This is essentially a loop timeout to force-abort 3980infinite AML loops. ACPCIA BZ 1192. 3981 3982Debugger: Cleanup output to dump ACPI names and namepaths without any 3983trailing underscores. Lv Zheng. ACPICA BZ 1135. 3984 3985Removed unnecessary conditional compilations across the Debugger and 3986Disassembler components where entire modules could be left uncompiled. 3987 3988The aapits test is deprecated and has been removed from the ACPICA git 3989tree. The test has never been completed and has not been maintained, thus 3990becoming rather useless. ACPICA BZ 1015, 794. 3991 3992A batch of small changes to close bugzilla and other reports: 3993- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 3994- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 3995- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 3996- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 3997Moore. 3998- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 3999ACPICA BZ 1184. 4000- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 4001operators. 4002- Debugger: Split debugger initialization/termination interfaces. Lv 4003Zheng. 4004- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 4005identification. 4006- AcpiExec: Add debug message during _REG method phase during table 4007load/init. 4008- AcpiNames: Fix a regression where some output was missing and no longer 4009emitted. 4010- Debugger: General cleanup and simplification. Lv Zheng. 4011- Disassembler: Cleanup use of several global option variables. Lv Zheng. 4012 4013Example Code and Data Size: These are the sizes for the OS-independent 4014acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4015debug version of the code includes the debug output trace mechanism and 4016has a much larger code and data size. 4017 4018 Current Release: 4019 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 4020 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 4021 Previous Release: 4022 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 4023 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 4024 4025 40262) iASL Compiler/Disassembler and Tools: 4027 4028AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 4029were not handled properly and caused load errors. Now, properly invoke 4030and use the ACPICA auto-reallocate mechanism for ACPI table data 4031structures. ACPICA BZ 1188 4032 4033AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 4034BZ 1190. 4035 4036AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 4037AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 4038executed during initialization. ACPICA BZ 1187, 1189. 4039 4040iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 4041that corresponds to each disassembled ASL statement, to simplify 4042debugging. ACPICA BZ 1191. 4043 4044Debugger: Add option to the "objects" command to display a summary of the 4045current namespace objects (Object type and count). This is displayed if 4046the command is entered with no arguments. 4047 4048AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 4049 4050 4051---------------------------------------- 405217 July 2015. Summary of changes for version 20150717: 4053 40541) ACPICA kernel-resident subsystem: 4055 4056Improved the partitioning between the Debugger and Disassembler 4057components. This allows the Debugger to be used standalone within kernel 4058code without the Disassembler (which is used for single stepping also). 4059This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 4060 4061Debugger: Implemented a new command to trace the execution of control 4062methods (Trace). This is especially useful for the in-kernel version of 4063the debugger when file I/O may not be available for method trace output. 4064See the ACPICA reference for more information. Lv Zheng. 4065 4066Moved all C library prototypes (used for the local versions of these 4067functions when requested) to a new header, acclib.h 4068Cleaned up the use of non-ANSI C library functions. These functions are 4069implemented locally in ACPICA. Moved all such functions to a common 4070source file, utnonansi.c 4071 4072Debugger: Fixed a problem with the "!!" command (get last command 4073executed) where the debugger could enter an infinite loop and eventually 4074crash. 4075 4076Removed the use of local macros that were used for some of the standard C 4077library functions to automatically cast input parameters. This mostly 4078affected the is* functions where the input parameter is defined to be an 4079int. This required a few modifications to the main ACPICA source code to 4080provide casting for these functions and eliminate possible compiler 4081warnings for these parameters. 4082 4083Across the source code, added additional status/error checking to resolve 4084issues discovered by static source code analysis tools such as Coverity. 4085 4086Example Code and Data Size: These are the sizes for the OS-independent 4087acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4088debug version of the code includes the debug output trace mechanism and 4089has a much larger code and data size. 4090 4091 Current Release: 4092 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 4093 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 4094 Previous Release: 4095 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 4096 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 4097 4098 40992) iASL Compiler/Disassembler and Tools: 4100 4101iASL: Fixed a regression where the device map file feature no longer 4102worked properly when used in conjunction with the disassembler. It only 4103worked properly with the compiler itself. 4104 4105iASL: Implemented a new warning for method LocalX variables that are set 4106but never used (similar to a C compiler such as gcc). This also applies 4107to ArgX variables that are not defined by the parent method, and are 4108instead (legally) used as local variables. 4109 4110iASL/Preprocessor: Finished the pass-through of line numbers from the 4111preprocessor to the compiler. This ensures that compiler errors/warnings 4112have the correct original line numbers and filenames, regardless of any 4113#include files. 4114 4115iASL/Preprocessor: Fixed a couple of issues with comment handling and the 4116pass-through of comments to the preprocessor output file (which becomes 4117the compiler input file). Also fixed a problem with // comments that 4118appear after a math expression. 4119 4120iASL: Added support for the TCPA server table to the table compiler and 4121template generator. (The client table was already previously supported) 4122 4123iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 4124identify the iASL compiler. 4125 4126Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 4127multiple times. The new names are ACPI_SIGN_NEGATIVE and 4128ACPI_SIGN_POSITIVE. 4129 4130AcpiHelp: Update to expand help messages for the iASL preprocessor 4131directives. 4132 4133 4134---------------------------------------- 413519 June 2015. Summary of changes for version 20150619: 4136 4137Two regressions in version 20150616 have been addressed: 4138 4139Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 4140etc.) This update changes ACPICA to only use the standard headers for 4141functions, or the prototypes for the local versions of the C library 4142functions. Across the source code, this required some additional casts 4143for some Clib invocations for portability. Moved all local prototypes to 4144a new file, acclib.h 4145 4146Fixes several problems with recent changes to the handling of the FACS 4147table that could cause some systems not to boot. 4148 4149 4150---------------------------------------- 415116 June 2015. Summary of changes for version 20150616: 4152 4153 41541) ACPICA kernel-resident subsystem: 4155 4156Across the entire ACPICA source code base, the various macros for the C 4157library functions (such as ACPI_STRLEN, etc.) have been removed and 4158replaced by the standard C library names (strlen, etc.) The original 4159purpose for these macros is no longer applicable. This simplification 4160reduces the number of macros used in the ACPICA source code 4161significantly, improving readability and maintainability. 4162 4163Implemented support for a new ACPI table, the OSDT. This table, the 4164"override" SDT, can be loaded directly by the host OS at boot time. It 4165enables the replacement of existing namespace objects that were installed 4166via the DSDT and/or SSDTs. The primary purpose for this is to replace 4167buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 4168for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 4169Moore. 4170 4171Added support for systems with (improperly) two FACS tables -- a "32-bit" 4172table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 4173X field). This change will support both automatically. There continues to 4174be systems found with this issue. This support requires a change to the 4175AcpiSetFirmwareWakingVector interface. Also, a public global variable has 4176been added to allow the host to select which FACS is desired 4177(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 4178details Lv Zheng. 4179 4180Added a new feature to allow for systems that do not contain an FACS. 4181Although this is already supported on hardware-reduced platforms, the 4182feature has been extended for all platforms. The reasoning is that we do 4183not want to abort the entire ACPICA initialization just because the 4184system is seriously buggy and has no FACS. 4185 4186Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 4187not correctly transcribed from the ACPI specification in ACPICA version 418820150515. 4189 4190Implemented support for the _CLS object in the AcpiGetObjectInfo external 4191interface. 4192 4193Updated the definitions of the TCPA and TPM2 ACPI tables to the more 4194recent TCG ACPI Specification, December 14, 2014. Table disassembler and 4195compiler also updated. Note: The TCPA "server" table is not supported by 4196the disassembler/table-compiler at this time. 4197 4198ACPI 6.0: Added definitions for the new GIC version field in the MADT. 4199 4200Example Code and Data Size: These are the sizes for the OS-independent 4201acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4202debug version of the code includes the debug output trace mechanism and 4203has a much larger code and data size. 4204 4205 Current Release: 4206 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 4207 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 4208 Previous Release: 4209 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 4210 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 4211 4212 42132) iASL Compiler/Disassembler and Tools: 4214 4215Disassembler: Fixed a problem with the new symbolic operator disassembler 4216where incorrect ASL code could be emitted in some cases for the "non- 4217commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 4218ShiftRight. The actual problem cases seem to be rather unusual in common 4219ASL code, however. David Box. 4220 4221Modified the linux version of acpidump to obtain ACPI tables from not 4222just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 4223Zheng. 4224 4225iASL: Fixed a problem where the user preprocessor output file (.i) 4226contained extra data that was not expected. The compiler was using this 4227file as a temporary file and passed through #line directives in order to 4228keep compiler error messages in sync with the input file and line number 4229across multiple include files. The (.i) is no longer a temporary file as 4230the compiler uses a new, different file for the original purpose. 4231 4232iASL: Fixed a problem where comments within the original ASL source code 4233file were not passed through to the preprocessor output file, nor any 4234listing files. 4235 4236iASL: Fixed some issues for the handling of the "#include" preprocessor 4237directive and the similar (but not the same) "Include" ASL operator. 4238 4239iASL: Add support for the new OSDT in both the disassembler and compiler. 4240 4241iASL: Fixed a problem with the constant folding support where a Buffer 4242object could be incorrectly generated (incorrectly formed) during a 4243conversion to a Store() operator. 4244 4245AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 4246description text for the _REV predefined name. _REV now permanently 4247returns 2, as per the ACPI 6.0 specification. 4248 4249Debugger: Enhanced the output of the Debug ASL object for references 4250produced by the Index operator. For Buffers and strings, only output the 4251actual byte pointed to by the index. For packages, only print the single 4252package element decoded by the index. Previously, the entire 4253buffer/string/package was emitted. 4254 4255iASL/Table-compiler: Fixed a regression where the "generic" data types 4256were no longer recognized, causing errors. 4257 4258 4259---------------------------------------- 426015 May 2015. Summary of changes for version 20150515: 4261 4262This release implements most of ACPI 6.0 as described below. 4263 42641) ACPICA kernel-resident subsystem: 4265 4266Implemented runtime argument checking and return value checking for all 4267new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 4268_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 4269 4270Example Code and Data Size: These are the sizes for the OS-independent 4271acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4272debug version of the code includes the debug output trace mechanism and 4273has a much larger code and data size. 4274 4275 Current Release: 4276 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 4277 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 4278 Previous Release: 4279 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4280 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4281 4282 42832) iASL Compiler/Disassembler and Tools: 4284 4285iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 4286names (argument count validation and return value typechecking.) 4287 4288iASL disassembler and table compiler: implemented support for all new 4289ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 4290 4291iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 4292tables: FADT, MADT. 4293 4294iASL preprocessor: Added a new directive to enable inclusion of binary 4295blobs into ASL code. The new directive is #includebuffer. It takes a 4296binary file as input and emits a named ascii buffer object into the ASL 4297code. 4298 4299AcpiHelp: Added support for all new ACPI 6.0 predefined names. 4300 4301AcpiHelp: Added a new option, -d, to display all iASL preprocessor 4302directives. 4303 4304AcpiHelp: Added a new option, -t, to display all known/supported ACPI 4305tables. 4306 4307 4308---------------------------------------- 430910 April 2015. Summary of changes for version 20150410: 4310 4311Reverted a change introduced in version 20150408 that caused 4312a regression in the disassembler where incorrect operator 4313symbols could be emitted. 4314 4315 4316---------------------------------------- 431708 April 2015. Summary of changes for version 20150408: 4318 4319 43201) ACPICA kernel-resident subsystem: 4321 4322Permanently set the return value for the _REV predefined name. It now 4323returns 2 (was 5). This matches other ACPI implementations. _REV will be 4324deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 4325for ACPI 2.0 and later. It should never be used to differentiate or 4326identify operating systems. 4327 4328Added the "Windows 2015" string to the _OSI support. ACPICA will now 4329return TRUE to a query with this string. 4330 4331Fixed several issues with the local version of the printf function. 4332 4333Added the C99 compiler option (-std=c99) to the Unix makefiles. 4334 4335 Current Release: 4336 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 4337 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 4338 Previous Release: 4339 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4340 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4341 4342 43432) iASL Compiler/Disassembler and Tools: 4344 4345iASL: Implemented an enhancement to the constant folding feature to 4346transform the parse tree to a simple Store operation whenever possible: 4347 Add (2, 3, X) ==> is converted to: Store (5, X) 4348 X = 2 + 3 ==> is converted to: Store (5, X) 4349 4350Updated support for the SLIC table (Software Licensing Description Table) 4351in both the Data Table compiler and the disassembler. The SLIC table 4352support now conforms to "Microsoft Software Licensing Tables (SLIC and 4353MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 4354following the ACPI header is now defined to be "Proprietary Data", and as 4355such, can only be entered or displayed as a hex data block. 4356 4357Implemented full support for the MSDM table as described in the document 4358above. Note: The format of MSDM is similar to SLIC. Any MSDM data 4359following the ACPI header is defined to be "Proprietary Data", and can 4360only be entered or displayed as a hex data block. 4361 4362Implemented the -Pn option for the iASL Table Compiler (was only 4363implemented for the ASL compiler). This option disables the iASL 4364preprocessor. 4365 4366Disassembler: For disassembly of Data Tables, added a comment field 4367around the Ascii equivalent data that is emitted as part of the "Raw 4368Table Data" block. This prevents the iASL Preprocessor from possible 4369confusion if/when the table is compiled. 4370 4371Disassembler: Added an option (-df) to force the disassembler to assume 4372that the table being disassembled contains valid AML. This feature is 4373useful for disassembling AML files that contain ACPI signatures other 4374than DSDT or SSDT (such as OEMx or other signatures). 4375 4376Changes for the EFI version of the tools: 43771) Fixed a build error/issue 43782) Fixed a cast warning 4379 4380iASL: Fixed a path issue with the __FILE__ operator by making the 4381directory prefix optional within the internal SplitInputFilename 4382function. 4383 4384Debugger: Removed some unused global variables. 4385 4386Tests: Updated the makefile for proper generation of the AAPITS suite. 4387 4388 4389---------------------------------------- 439004 February 2015. Summary of changes for version 20150204: 4391 4392ACPICA kernel-resident subsystem: 4393 4394Updated all ACPICA copyrights and signons to 2014. Added the 2014 4395copyright to all module headers and signons, including the standard Linux 4396header. This affects virtually every file in the ACPICA core subsystem, 4397iASL compiler, all ACPICA utilities, and the test suites. 4398 4399Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 4400A raw gpe handling mechanism was created to allow better handling of GPE 4401storms that aren't easily managed by the normal handler. The raw handler 4402allows disabling/renabling of the GPE so that interrupt storms can be 4403avoided in cases where events cannot be timely serviced. In this 4404scenario, handlers should use the AcpiSetGpe() API to disable/enable the 4405GPE. This API will leave the reference counts undisturbed, thereby 4406preventing unintentional clearing of the GPE when the intent in only to 4407temporarily disable it. Raw handlers allow enabling and disabling of a 4408GPE by removing GPE register locking. As such, raw handlers much provide 4409their own locks while using GPE API's to protect access to GPE data 4410structures. 4411Lv Zheng 4412 4413Events: Always modify GPE registers under the GPE lock. 4414Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 4415values. Reported as bug by joe.liu@apple.com. 4416 4417Unix makefiles: Separate option to disable optimizations and 4418_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 4419NOOPT disable option and creates a separate flag (NOFORTIFY) for this 4420purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 4421errors when building ACPICA. This allows disabling the option without 4422also having to disable optimazations. 4423David Box 4424 4425 Current Release: 4426 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 4427 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 4428 4429-- 4430-------------------------------------- 443107 November 2014. Summary of changes for version 20141107: 4432 4433This release is available at https://acpica.org/downloads 4434 4435This release introduces and implements language extensions to ASL that 4436provide support for symbolic ("C-style") operators and expressions. These 4437language extensions are known collectively as ASL+. 4438 4439 44401) iASL Compiler/Disassembler and Tools: 4441 4442Disassembler: Fixed a problem with disassembly of the UartSerialBus 4443macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 4444Box. 4445 4446Disassembler: Fixed the Unicode macro support to add escape sequences. 4447All non-printable ASCII values are emitted as escape sequences, as well 4448as the standard escapes for quote and backslash. Ensures that the 4449disassembled macro can be correctly recompiled. 4450 4451iASL: Added Printf/Fprintf macros for formatted output. These macros are 4452translated to existing AML Concatenate and Store operations. Printf 4453writes to the ASL Debug object. Fprintf allows the specification of an 4454ASL name as the target. Only a single format specifier is required, %o, 4455since the AML interpreter dynamically converts objects to the required 4456type. David E. Box. 4457 4458 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 4459 (Concatenate (Concatenate (Concatenate ("", Arg0), 4460 ": Unexpected value for "), Arg1), ", "), Arg2), 4461 " at line "), Arg3), Debug) 4462 4463 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 4464 Arg0, Arg1, Arg2, Arg3) 4465 4466 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 4467 ("", Arg1), ": "), Arg0), " Successful"), STR1) 4468 4469 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 4470 4471iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 4472ASL parse tree before the AML code is generated. This allows blocks of 4473ASL code to be removed in order to help locate and identify problem 4474devices and/or code. David E. Box. 4475 4476AcpiExec: Added support (-fi) for an optional namespace object 4477initialization file. This file specifies initial values for namespace 4478objects as necessary for debugging and testing different ASL code paths 4479that may be taken as a result of BIOS options. 4480 4481 44822) Overview of symbolic operator support for ASL (ASL+) 4483------------------------------------------------------- 4484 4485As an extension to the ASL language, iASL implements support for symbolic 4486(C-style) operators for math and logical expressions. This can greatly 4487simplify ASL code as well as improve both readability and 4488maintainability. These language extensions can exist concurrently with 4489all legacy ASL code and expressions. 4490 4491The symbolic extensions are 100% compatible with existing AML 4492interpreters, since no new AML opcodes are created. To implement the 4493extensions, the iASL compiler transforms the symbolic expressions into 4494the legacy ASL/AML equivalents at compile time. 4495 4496Full symbolic expressions are supported, along with the standard C 4497precedence and associativity rules. 4498 4499Full disassembler support for the symbolic expressions is provided, and 4500creates an automatic migration path for existing ASL code to ASL+ code 4501via the disassembly process. By default, the disassembler now emits ASL+ 4502code with symbolic expressions. An option (-dl) is provided to force the 4503disassembler to emit legacy ASL code if desired. 4504 4505Below is the complete list of the currently supported symbolic operators 4506with examples. See the iASL User Guide for additional information. 4507 4508 4509ASL+ Syntax Legacy ASL Equivalent 4510----------- --------------------- 4511 4512 // Math operators 4513 4514Z = X + Y Add (X, Y, Z) 4515Z = X - Y Subtract (X, Y, Z) 4516Z = X * Y Multiply (X, Y, Z) 4517Z = X / Y Divide (X, Y, , Z) 4518Z = X % Y Mod (X, Y, Z) 4519Z = X << Y ShiftLeft (X, Y, Z) 4520Z = X >> Y ShiftRight (X, Y, Z) 4521Z = X & Y And (X, Y, Z) 4522Z = X | Y Or (X, Y, Z) 4523Z = X ^ Y Xor (X, Y, Z) 4524Z = ~X Not (X, Z) 4525X++ Increment (X) 4526X-- Decrement (X) 4527 4528 // Logical operators 4529 4530(X == Y) LEqual (X, Y) 4531(X != Y) LNotEqual (X, Y) 4532(X < Y) LLess (X, Y) 4533(X > Y) LGreater (X, Y) 4534(X <= Y) LLessEqual (X, Y) 4535(X >= Y) LGreaterEqual (X, Y) 4536(X && Y) LAnd (X, Y) 4537(X || Y) LOr (X, Y) 4538(!X) LNot (X) 4539 4540 // Assignment and compound assignment operations 4541 4542X = Y Store (Y, X) 4543X += Y Add (X, Y, X) 4544X -= Y Subtract (X, Y, X) 4545X *= Y Multiply (X, Y, X) 4546X /= Y Divide (X, Y, , X) 4547X %= Y Mod (X, Y, X) 4548X <<= Y ShiftLeft (X, Y, X) 4549X >>= Y ShiftRight (X, Y, X) 4550X &= Y And (X, Y, X) 4551X |= Y Or (X, Y, X) 4552X ^= Y Xor (X, Y, X) 4553 4554 45553) ASL+ Examples: 4556----------------- 4557 4558Legacy ASL: 4559 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 4560 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 45610x03FB), 4562 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 4563 { 4564 And (MEMB, 0xFFFFFFF0, SRMB) 4565 Store (MEMB, Local2) 4566 Store (PDBM, Local1) 4567 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 4568 Store (SRMB, MEMB) 4569 Or (PDBM, 0x02, PDBM) 4570 } 4571 4572ASL+ version: 4573 If (((R510 & 0x03FB) == 0x02E0) || 4574 ((R520 & 0x03FB) == 0x02E0) || 4575 ((R530 & 0x03FB) == 0x02E0) || 4576 ((R540 & 0x03FB) == 0x02E0)) 4577 { 4578 SRMB = (MEMB & 0xFFFFFFF0) 4579 Local2 = MEMB 4580 Local1 = PDBM 4581 PDBM &= 0xFFFFFFFFFFFFFFF9 4582 MEMB = SRMB 4583 PDBM |= 0x02 4584 } 4585 4586Legacy ASL: 4587 Store (0x1234, Local1) 4588 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 4589 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 4590 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 4591 Store (Index (PKG1, 0x03), Local6) 4592 Store (Add (Local3, Local2), Debug) 4593 Add (Local1, 0x0F, Local2) 4594 Add (Local1, Multiply (Local2, Local3), Local2) 4595 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 4596 4597ASL+ version: 4598 Local1 = 0x1234 4599 Local3 = (((Local1 + TEST) + 0x20) * Local2) 4600 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 4601 Local3 = (Local1 + (TEST + (0x20 * Local2))) 4602 Local6 = Index (PKG1, 0x03) 4603 Debug = (Local3 + Local2) 4604 Local2 = (Local1 + 0x0F) 4605 Local2 = (Local1 + (Local2 * Local3)) 4606 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 4607 4608 4609---------------------------------------- 461026 September 2014. Summary of changes for version 20140926: 4611 46121) ACPICA kernel-resident subsystem: 4613 4614Updated the GPIO operation region handler interface (GeneralPurposeIo). 4615In order to support GPIO Connection objects with multiple pins, along 4616with the related Field objects, the following changes to the interface 4617have been made: The Address is now defined to be the offset in bits of 4618the field unit from the previous invocation of a Connection. It can be 4619viewed as a "Pin Number Index" into the connection resource descriptor. 4620The BitWidth is the exact bit width of the field. It is usually one bit, 4621but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 4622additional information and examples. 4623 4624GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 4625corresponding _Lxx/_Exx methods are disabled (they may have been enabled 4626by the firmware), so that they cannot fire until they are enabled via 4627AcpiUpdateAllGpes. Rafael J. Wysocki. 4628 4629Added a new return flag for the Event/GPE status interfaces -- 4630AcpiGetEventStatus and AcpiGetGpeStatus. The new 4631ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 4632GPE currently has a handler associated with it, and can thus actually 4633affect the system. Lv Zheng. 4634 4635Example Code and Data Size: These are the sizes for the OS-independent 4636acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4637debug version of the code includes the debug output trace mechanism and 4638has a much larger code and data size. 4639 4640 Current Release: 4641 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4642 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4643 Previous Release: 4644 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4645 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4646 46472) iASL Compiler/Disassembler and Tools: 4648 4649iASL: Fixed a memory allocation/free regression introduced in 20140828 4650that could cause the compiler to crash. This was introduced inadvertently 4651during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 46521113. 4653 4654iASL: Removed two error messages that have been found to create false 4655positives, until they can be fixed and fully validated (ACPICA BZ 1112): 46561) Illegal forward reference within a method 46572) Illegal reference across two methods 4658 4659iASL: Implemented a new option (-lm) to create a hardware mapping file 4660that summarizes all GPIO, I2C, SPI, and UART connections. This option 4661works for both the compiler and disassembler. See the iASL compiler user 4662guide for additional information and examples (section 6.4.6). 4663 4664AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 4665version 2. This corrects the AE_BAD_HEADER exception seen on systems with 4666a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 4667 4668AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 4669unless STDIN is actually a terminal. Assists with batch-mode processing. 4670ACPICA BZ 1114. 4671 4672Disassembler/AcpiHelp: Added another large group of recognized _HID 4673values. 4674 4675 4676---------------------------------------- 467728 August 2014. Summary of changes for version 20140828: 4678 46791) ACPICA kernel-resident subsystem: 4680 4681Fixed a problem related to the internal use of the Timer() operator where 4682a 64-bit divide could cause an attempted link to a double-precision math 4683library. This divide is not actually necessary, so the code was 4684restructured to eliminate it. Lv Zheng. 4685 4686ACPI 5.1: Added support for the runtime validation of the _DSD package 4687(similar to the iASL support). 4688 4689ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 4690SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 4691 4692Example Code and Data Size: These are the sizes for the OS-independent 4693acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4694debug version of the code includes the debug output trace mechanism and 4695has a much larger code and data size. 4696 4697 Current Release: 4698 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4699 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4700 Previous Release: 4701 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 4702 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4703 47042) iASL Compiler/Disassembler and Tools: 4705 4706AcpiExec: Fixed a problem on unix systems where the original terminal 4707state was not always properly restored upon exit. Seen when using the -v 4708option. ACPICA BZ 1104. 4709 4710iASL: Fixed a problem with the validation of the ranges/length within the 4711Memory24 resource descriptor. There was a boundary condition when the 4712range was equal to the (length -1) caused by the fact that these values 4713are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 4714 4715Disassembler: Fixed a problem with the GpioInt descriptor interrupt 4716polarity 4717flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 4718is 4719now supported properly. 4720 4721ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 4722in the disassembler, data table compiler, and table template generator. 4723 4724iASL: Added a requirement for Device() objects that one of either a _HID 4725or _ADR must exist within the scope of a Device, as per the ACPI 4726specification. Remove a similar requirement that was incorrectly in place 4727for the _DSD object. 4728 4729iASL: Added error detection for illegal named references within control 4730methods that would cause runtime failures. Now trapped as errors are: 1) 4731References to objects within a non-parent control method. 2) Forward 4732references (within a method) -- for control methods, AML interpreters use 4733a one-pass parse of control methods. ACPICA BZ 1008. 4734 4735iASL: Added error checking for dependencies related to the _PSx power 4736methods. ACPICA BZ 1029. 47371) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 4738_PS3. 47392) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 4740scope. 4741 4742iASL and table compiler: Cleanup miscellaneous memory leaks by fully 4743deploying the existing object and string caches and adding new caches for 4744the table compiler. 4745 4746iASL: Split the huge parser source file into multiple subfiles to improve 4747manageability. Generation now requires the M4 macro preprocessor, which 4748is part of the Bison distribution on both unix and windows platforms. 4749 4750AcpiSrc: Fixed and removed all extraneous warnings generated during 4751entire ACPICA source code scan and/or conversion. 4752 4753 4754---------------------------------------- 4755 475624 July 2014. Summary of changes for version 20140724: 4757 4758The ACPI 5.1 specification has been released and is available at: 4759http://uefi.org/specs/access 4760 4761 47620) ACPI 5.1 support in ACPICA: 4763 4764ACPI 5.1 is fully supported in ACPICA as of this release. 4765 4766New predefined names. Support includes iASL and runtime ACPICA 4767validation. 4768 _CCA (Cache Coherency Attribute). 4769 _DSD (Device-Specific Data). David Box. 4770 4771Modifications to existing ACPI tables. Support includes headers, iASL 4772Data Table compiler, disassembler, and the template generator. 4773 FADT - New fields and flags. Graeme Gregory. 4774 GTDT - One new subtable and new fields. Tomasz Nowicki. 4775 MADT - Two new subtables. Tomasz Nowicki. 4776 PCCT - One new subtable. 4777 4778Miscellaneous. 4779 New notification type for System Resource Affinity change events. 4780 4781 47821) ACPICA kernel-resident subsystem: 4783 4784Fixed a regression introduced in 20140627 where a fault can happen during 4785the deletion of Alias AML namespace objects. The problem affected both 4786the core ACPICA and the ACPICA tools including iASL and AcpiExec. 4787 4788Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 4789simple mechanism to enable wake GPEs that have no associated handler or 4790control method. Rafael Wysocki. 4791 4792Updated the AcpiEnableGpe interface to disallow the enable if there is no 4793handler or control method associated with the particular GPE. This will 4794help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 4795 4796Updated GPE handling and dispatch by disabling the GPE before clearing 4797the status bit for edge-triggered GPEs. Lv Zheng. 4798 4799Added Timer() support to the AML Debug object. The current timer value is 4800now displayed with each invocation of (Store to) the debug object to 4801enable simple generation of execution times for AML code (method 4802execution for example.) ACPICA BZ 1093. 4803 4804Example Code and Data Size: These are the sizes for the OS-independent 4805acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4806debug version of the code includes the debug output trace mechanism and 4807has a much larger code and data size. 4808 4809 Current Release: 4810 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 4811 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4812 Previous Release: 4813 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4814 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4815 4816 48172) iASL Compiler/Disassembler and Tools: 4818 4819Fixed an issue with the recently added local printf implementation, 4820concerning width/precision specifiers that could cause incorrect output. 4821Lv Zheng. ACPICA BZ 1094. 4822 4823Disassembler: Added support to detect buffers that contain UUIDs and 4824disassemble them to an invocation of the ToUUID operator. Also emit 4825commented descriptions of known ACPI-related UUIDs. 4826 4827AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 4828-u. Adds three new files. 4829 4830iASL: Update table compiler and disassembler for DMAR table changes that 4831were introduced in September 2013. With assistance by David Woodhouse. 4832 4833---------------------------------------- 483427 June 2014. Summary of changes for version 20140627: 4835 48361) ACPICA kernel-resident subsystem: 4837 4838Formatted Output: Implemented local versions of standard formatted output 4839utilities such as printf, etc. Over time, it has been discovered that 4840there are in fact many portability issues with printf, and the addition 4841of this feature will fix/prevent these issues once and for all. Some 4842known issues are summarized below: 4843 48441) Output of 64-bit values is not portable. For example, UINT64 is %ull 4845for the Linux kernel and is %uI64 for some MSVC versions. 48462) Invoking printf consistently in a manner that is portable across both 484732-bit and 64-bit platforms is difficult at best in many situations. 48483) The output format for pointers varies from system to system (leading 4849zeros especially), and leads to inconsistent output from ACPICA across 4850platforms. 48514) Certain platform-specific printf formats may conflict with ACPICA use. 48525) If there is no local C library available, ACPICA now has local support 4853for printf. 4854 4855-- To address these printf issues in a complete manner, ACPICA now 4856directly implements a small subset of printf format specifiers, only 4857those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 4858 4859Implemented support for ACPICA generation within the EFI environment. 4860Initially, the AcpiDump utility is supported in the UEFI shell 4861environment. Lv Zheng. 4862 4863Added a new external interface, AcpiLogError, to improve ACPICA 4864portability. This allows the host to redirect error messages from the 4865ACPICA utilities. Lv Zheng. 4866 4867Added and deployed new OSL file I/O interfaces to improve ACPICA 4868portability: 4869 AcpiOsOpenFile 4870 AcpiOsCloseFile 4871 AcpiOsReadFile 4872 AcpiOsWriteFile 4873 AcpiOsGetFileOffset 4874 AcpiOsSetFileOffset 4875There are C library implementations of these functions in the new file 4876service_layers/oslibcfs.c -- however, the functions can be implemented by 4877the local host in any way necessary. Lv Zheng. 4878 4879Implemented a mechanism to disable/enable ACPI table checksum validation 4880at runtime. This can be useful when loading tables very early during OS 4881initialization when it may not be possible to map the entire table in 4882order to compute the checksum. Lv Zheng. 4883 4884Fixed a buffer allocation issue for the Generic Serial Bus support. 4885Originally, a fixed buffer length was used. This change allows for 4886variable-length buffers based upon the protocol indicated by the field 4887access attributes. Reported by Lan Tianyu. Lv Zheng. 4888 4889Fixed a problem where an object detached from a namespace node was not 4890properly terminated/cleared and could cause a circular list problem if 4891reattached. ACPICA BZ 1063. David Box. 4892 4893Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 4894 4895Fixed a possible memory leak in an error return path within the function 4896AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 4897 4898Example Code and Data Size: These are the sizes for the OS-independent 4899acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4900debug version of the code includes the debug output trace mechanism and 4901has a much larger code and data size. 4902 4903 Current Release: 4904 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4905 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4906 Previous Release: 4907 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4908 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4909 4910 49112) iASL Compiler/Disassembler and Tools: 4912 4913Disassembler: Add dump of ASCII equivalent text within a comment at the 4914end of each line of the output for the Buffer() ASL operator. 4915 4916AcpiDump: Miscellaneous changes: 4917 Fixed repetitive table dump in -n mode. 4918 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 4919the ACPI 2.0 GUID fails. 4920 4921iASL: Fixed a problem where the compiler could fault if incorrectly given 4922an acpidump output file as input. ACPICA BZ 1088. David Box. 4923 4924AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 4925they are invoked without any arguments. 4926 4927Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 49281086. Colin Ian King. 4929 4930Disassembler: Cleaned up a block of code that extracts a parent Op 4931object. Added a comment that explains that the parent is guaranteed to be 4932valid in this case. ACPICA BZ 1069. 4933 4934 4935---------------------------------------- 493624 April 2014. Summary of changes for version 20140424: 4937 49381) ACPICA kernel-resident subsystem: 4939 4940Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 4941Some of these tables are known to contain a trailing NULL entry. Lv 4942Zheng. 4943 4944Removed an extraneous error message for the case where there are a large 4945number of system GPEs (> 124). This was the "32-bit FADT register is too 4946long to convert to GAS struct" message, which is irrelevant for GPEs 4947since the GPEx_BLK_LEN fields of the FADT are always used instead of the 4948(limited capacity) GAS bit length. Also, several changes to ensure proper 4949support for GPE numbers > 255, where some "GPE number" fields were 8-bits 4950internally. 4951 4952Implemented and deployed additional configuration support for the public 4953ACPICA external interfaces. Entire classes of interfaces can now be 4954easily modified or configured out, replaced by stubbed inline functions 4955by default. Lv Zheng. 4956 4957Moved all public ACPICA runtime configuration globals to the public 4958ACPICA external interface file for convenience. Also, removed some 4959obsolete/unused globals. See the file acpixf.h. Lv Zheng. 4960 4961Documentation: Added a new section to the ACPICA reference describing the 4962maximum number of GPEs that can be supported by the FADT-defined GPEs in 4963block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 4964reference. 4965 4966Example Code and Data Size: These are the sizes for the OS-independent 4967acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4968debug version of the code includes the debug output trace mechanism and 4969has a much larger code and data size. 4970 4971 Current Release: 4972 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4973 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4974 Previous Release: 4975 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 4976 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 4977 4978 49792) iASL Compiler/Disassembler and Tools: 4980 4981iASL and disassembler: Add full support for the LPIT table (Low Power 4982Idle Table). Includes support in the disassembler, data table compiler, 4983and template generator. 4984 4985AcpiDump utility: 49861) Add option to force the use of the RSDT (over the XSDT). 49872) Improve validation of the RSDP signature (use 8 chars instead of 4). 4988 4989iASL: Add check for predefined packages that are too large. For 4990predefined names that contain subpackages, check if each subpackage is 4991too large. (Check for too small already exists.) 4992 4993Debugger: Updated the GPE command (which simulates a GPE by executing the 4994GPE code paths in ACPICA). The GPE device is now optional, and defaults 4995to the GPE 0/1 FADT-defined blocks. 4996 4997Unix application OSL: Update line-editing support. Add additional error 4998checking and take care not to reset terminal attributes on exit if they 4999were never set. This should help guarantee that the terminal is always 5000left in the previous state on program exit. 5001 5002 5003---------------------------------------- 500425 March 2014. Summary of changes for version 20140325: 5005 50061) ACPICA kernel-resident subsystem: 5007 5008Updated the auto-serialize feature for control methods. This feature 5009automatically serializes all methods that create named objects in order 5010to prevent runtime errors. The update adds support to ignore the 5011currently executing AML SyncLevel when invoking such a method, in order 5012to prevent disruption of any existing SyncLevel priorities that may exist 5013in the AML code. Although the use of SyncLevels is relatively rare, this 5014change fixes a regression where an AE_AML_MUTEX_ORDER exception can 5015appear on some machines starting with the 20140214 release. 5016 5017Added a new external interface to allow the host to install ACPI tables 5018very early, before the namespace is even created. AcpiInstallTable gives 5019the host additional flexibility for ACPI table management. Tables can be 5020installed directly by the host as if they had originally appeared in the 5021XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 5022(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 5023with additional internal restructuring and cleanup. See the ACPICA 5024Reference for interface details. Lv Zheng. 5025 5026Added validation of the checksum for all incoming dynamically loaded 5027tables (via external interfaces or via AML Load/LoadTable operators). Lv 5028Zheng. 5029 5030Updated the use of the AcpiOsWaitEventsComplete interface during Notify 5031and GPE handler removal. Restructured calls to eliminate possible race 5032conditions. Lv Zheng. 5033 5034Added a warning for the use/execution of the ASL/AML Unload (table) 5035operator. This will help detect and identify machines that use this 5036operator if and when it is ever used. This operator has never been seen 5037in the field and the usage model and possible side-effects of the drastic 5038runtime action of a full table removal are unknown. 5039 5040Reverted the use of #pragma push/pop which was introduced in the 20140214 5041release. It appears that push and pop are not implemented by enough 5042compilers to make the use of this feature feasible for ACPICA at this 5043time. However, these operators may be deployed in a future ACPICA 5044release. 5045 5046Added the missing EXPORT_SYMBOL macros for the install and remove SCI 5047handler interfaces. 5048 5049Source code generation: 50501) Disabled the use of the "strchr" macro for the gcc-specific 5051generation. For some versions of gcc, this macro can periodically expose 5052a compiler bug which in turn causes compile-time error(s). 50532) Added support for PPC64 compilation. Colin Ian King. 5054 5055Example Code and Data Size: These are the sizes for the OS-independent 5056acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5057debug version of the code includes the debug output trace mechanism and 5058has a much larger code and data size. 5059 5060 Current Release: 5061 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 5062 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 5063 Previous Release: 5064 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 5065 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 5066 5067 50682) iASL Compiler/Disassembler and Tools: 5069 5070Disassembler: Added several new features to improve the readability of 5071the resulting ASL code. Extra information is emitted within comment 5072fields in the ASL code: 50731) Known _HID/_CID values are decoded to descriptive text. 50742) Standard values for the Notify() operator are decoded to descriptive 5075text. 50763) Target operands are expanded to full pathnames (in a comment) when 5077possible. 5078 5079Disassembler: Miscellaneous updates for extern() handling: 50801) Abort compiler if file specified by -fe option does not exist. 50812) Silence unnecessary warnings about argument count mismatches. 50823) Update warning messages concerning unresolved method externals. 50834) Emit "UnknownObj" keyword for externals whose type cannot be 5084determined. 5085 5086AcpiHelp utility: 50871) Added the -a option to display both the ASL syntax and the AML 5088encoding for an input ASL operator. This effectively displays all known 5089information about an ASL operator with one AcpiHelp invocation. 50902) Added substring match support (similar to a wildcard) for the -i 5091(_HID/PNP IDs) option. 5092 5093iASL/Disassembler: Since this tool does not yet support execution on big- 5094endian machines, added detection of endianness and an error message if 5095execution is attempted on big-endian. Support for big-endian within iASL 5096is a feature that is on the ACPICA to-be-done list. 5097 5098AcpiBin utility: 50991) Remove option to extract binary files from an acpidump; this function 5100is made obsolete by the AcpiXtract utility. 51012) General cleanup of open files and allocated buffers. 5102 5103 5104---------------------------------------- 510514 February 2014. Summary of changes for version 20140214: 5106 51071) ACPICA kernel-resident subsystem: 5108 5109Implemented a new mechanism to proactively prevent problems with ill- 5110behaved reentrant control methods that create named ACPI objects. This 5111behavior is illegal as per the ACPI specification, but is nonetheless 5112frequently seen in the field. Previously, this could lead to an 5113AE_ALREADY_EXISTS exception if the method was actually entered by more 5114than one thread. This new mechanism detects such methods at table load 5115time and marks them "serialized" to prevent reentrancy. A new global 5116option, AcpiGbl_AutoSerializeMethods, has been added to disable this 5117feature if desired. This mechanism and global option obsoletes and 5118supersedes the previous AcpiGbl_SerializeAllMethods option. 5119 5120Added the "Windows 2013" string to the _OSI support. ACPICA will now 5121respond TRUE to _OSI queries with this string. It is the stated policy of 5122ACPICA to add new strings to the _OSI support as soon as possible after 5123they are defined. See the full ACPICA _OSI policy which has been added to 5124the utilities/utosi.c file. 5125 5126Hardened/updated the _PRT return value auto-repair code: 51271) Do not abort the repair on a single subpackage failure, continue to 5128check all subpackages. 51292) Add check for the minimum subpackage length (4). 51303) Properly handle extraneous NULL package elements. 5131 5132Added support to avoid the possibility of infinite loops when traversing 5133object linked lists. Never allow an infinite loop, even in the face of 5134corrupted object lists. 5135 5136ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 5137pack(pop) directives to ensure that the ACPICA headers are independent of 5138compiler settings or other host headers. 5139 5140Example Code and Data Size: These are the sizes for the OS-independent 5141acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5142debug version of the code includes the debug output trace mechanism and 5143has a much larger code and data size. 5144 5145 Current Release: 5146 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 5147 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 5148 Previous Release: 5149 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 5150 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 5151 5152 51532) iASL Compiler/Disassembler and Tools: 5154 5155iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 5156first reserved field was incorrectly forced to have a value of zero. This 5157change correctly forces the field to have a value of one. ACPICA BZ 1081. 5158 5159Debugger: Added missing support for the "Extra" and "Data" subobjects 5160when displaying object data. 5161 5162Debugger: Added support to display entire object linked lists when 5163displaying object data. 5164 5165iASL: Removed the obsolete -g option to obtain ACPI tables from the 5166Windows registry. This feature has been superseded by the acpidump 5167utility. 5168 5169 5170---------------------------------------- 517114 January 2014. Summary of changes for version 20140114: 5172 51731) ACPICA kernel-resident subsystem: 5174 5175Updated all ACPICA copyrights and signons to 2014. Added the 2014 5176copyright to all module headers and signons, including the standard Linux 5177header. This affects virtually every file in the ACPICA core subsystem, 5178iASL compiler, all ACPICA utilities, and the test suites. 5179 5180Improved parameter validation for AcpiInstallGpeBlock. Added the 5181following checks: 51821) The incoming device handle refers to type ACPI_TYPE_DEVICE. 51832) There is not already a GPE block attached to the device. 5184Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 5185device. 5186 5187Correctly support "references" in the ACPI_OBJECT. This change fixes the 5188support to allow references (namespace nodes) to be passed as arguments 5189to control methods via the evaluate object interface. This is probably 5190most useful for testing purposes, however. 5191 5192Improved support for 32/64 bit physical addresses in printf()-like 5193output. This change improves the support for physical addresses in printf 5194debug statements and other output on both 32-bit and 64-bit hosts. It 5195consistently outputs the appropriate number of bytes for each host. The 5196%p specifier is unsatisfactory since it does not emit uniform output on 5197all hosts/clib implementations (on some, leading zeros are not supported, 5198leading to difficult-to-read output). 5199 5200Example Code and Data Size: These are the sizes for the OS-independent 5201acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5202debug version of the code includes the debug output trace mechanism and 5203has a much larger code and data size. 5204 5205 Current Release: 5206 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 5207 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 5208 Previous Release: 5209 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 5210 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 5211 5212 52132) iASL Compiler/Disassembler and Tools: 5214 5215iASL: Fix a possible fault when using the Connection() operator. Fixes a 5216problem if the parent Field definition for the Connection operator refers 5217to an operation region that does not exist. ACPICA BZ 1064. 5218 5219AcpiExec: Load of local test tables is now optional. The utility has the 5220capability to load some various tables to test features of ACPICA. 5221However, there are enough of them that the output of the utility became 5222confusing. With this change, only the required local tables are displayed 5223(RSDP, XSDT, etc.) along with the actual tables loaded via the command 5224line specification. This makes the default output simler and easier to 5225understand. The -el command line option restores the original behavior 5226for testing purposes. 5227 5228AcpiExec: Added support for overlapping operation regions. This change 5229expands the simulation of operation regions by supporting regions that 5230overlap within the given address space. Supports SystemMemory and 5231SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 5232 5233AcpiExec: Added region handler support for PCI_Config and EC spaces. This 5234allows AcpiExec to simulate these address spaces, similar to the current 5235support for SystemMemory and SystemIO. 5236 5237Debugger: Added new command to read/write/compare all namespace objects. 5238The command "test objects" will exercise the entire namespace by writing 5239new values to each data object, and ensuring that the write was 5240successful. The original value is then restored and verified. 5241 5242Debugger: Added the "test predefined" command. This change makes this 5243test public and puts it under the new "test" command. The test executes 5244each and every predefined name within the current namespace. 5245 5246 5247---------------------------------------- 524818 December 2013. Summary of changes for version 20131218: 5249 5250Global note: The ACPI 5.0A specification was released this month. There 5251are no changes needed for ACPICA since this release of ACPI is an 5252errata/clarification release. The specification is available at 5253acpi.info. 5254 5255 52561) ACPICA kernel-resident subsystem: 5257 5258Added validation of the XSDT root table if it is present. Some older 5259platforms contain an XSDT that is ill-formed or otherwise invalid (such 5260as containing some or all entries that are NULL pointers). This change 5261adds a new function to validate the XSDT before actually using it. If the 5262XSDT is found to be invalid, ACPICA will now automatically fall back to 5263using the RSDT instead. Original implementation by Zhao Yakui. Ported to 5264ACPICA and enhanced by Lv Zheng and Bob Moore. 5265 5266Added a runtime option to ignore the XSDT and force the use of the RSDT. 5267This change adds a runtime option that will force ACPICA to use the RSDT 5268instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 5269requires that an XSDT be used instead of the RSDT, the XSDT has been 5270found to be corrupt or ill-formed on some machines. Lv Zheng. 5271 5272Added a runtime option to favor 32-bit FADT register addresses over the 527364-bit addresses. This change adds an option to favor 32-bit FADT 5274addresses when there is a conflict between the 32-bit and 64-bit versions 5275of the same register. The default behavior is to use the 64-bit version 5276in accordance with the ACPI specification. This can now be overridden via 5277the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 5278 5279During the change above, the internal "Convert FADT" and "Verify FADT" 5280functions have been merged to simplify the code, making it easier to 5281understand and maintain. ACPICA BZ 933. 5282 5283Improve exception reporting and handling for GPE block installation. 5284Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 5285status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 5286 5287Added helper macros to extract bus/segment numbers from the HEST table. 5288This change adds two macros to extract the encoded bus and segment 5289numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 5290Betty Dall <betty.dall@hp.com> 5291 5292Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 5293by ACPICA. It is not a public macro, so it should have no effect on 5294existing OSV code. Lv Zheng. 5295 5296Example Code and Data Size: These are the sizes for the OS-independent 5297acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5298debug version of the code includes the debug output trace mechanism and 5299has a much larger code and data size. 5300 5301 Current Release: 5302 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 5303 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 5304 Previous Release: 5305 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 5306 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 5307 5308 53092) iASL Compiler/Disassembler and Tools: 5310 5311Disassembler: Improved pathname support for emitted External() 5312statements. This change adds full pathname support for external names 5313that have been resolved internally by the inclusion of additional ACPI 5314tables (via the iASL -e option). Without this change, the disassembler 5315can emit multiple externals for the same object, or it become confused 5316when the Scope() operator is used on an external object. Overall, greatly 5317improves the ability to actually recompile the emitted ASL code when 5318objects a referenced across multiple ACPI tables. Reported by Michael 5319Tsirkin (mst@redhat.com). 5320 5321Tests/ASLTS: Updated functional control suite to execute with no errors. 5322David Box. Fixed several errors related to the testing of the interpreter 5323slack mode. Lv Zheng. 5324 5325iASL: Added support to detect names that are declared within a control 5326method, but are unused (these are temporary names that are only valid 5327during the time the method is executing). A remark is issued for these 5328cases. ACPICA BZ 1022. 5329 5330iASL: Added full support for the DBG2 table. Adds full disassembler, 5331table compiler, and template generator support for the DBG2 table (Debug 5332Port 2 table). 5333 5334iASL: Added full support for the PCCT table, update the table definition. 5335Updates the PCCT table definition in the actbl3.h header and adds table 5336compiler and template generator support. 5337 5338iASL: Added an option to emit only error messages (no warnings/remarks). 5339The -ve option will enable only error messages, warnings and remarks are 5340suppressed. This can simplify debugging when only the errors are 5341important, such as when an ACPI table is disassembled and there are many 5342warnings and remarks -- but only the actual errors are of real interest. 5343 5344Example ACPICA code (source/tools/examples): Updated the example code so 5345that it builds to an actual working program, not just example code. Added 5346ACPI tables and execution of an example control method in the DSDT. Added 5347makefile support for Unix generation. 5348 5349 5350---------------------------------------- 535115 November 2013. Summary of changes for version 20131115: 5352 5353This release is available at https://acpica.org/downloads 5354 5355 53561) ACPICA kernel-resident subsystem: 5357 5358Resource Manager: Fixed loop termination for the "get AML length" 5359function. The loop previously had an error termination on a NULL resource 5360pointer, which can never happen since the loop simply increments a valid 5361resource pointer. This fix changes the loop to terminate with an error on 5362an invalid end-of-buffer condition. The problem can be seen as an 5363infinite loop by callers to AcpiSetCurrentResources with an invalid or 5364corrupted resource descriptor, or a resource descriptor that is missing 5365an END_TAG descriptor. Reported by Dan Carpenter 5366<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 5367 5368Table unload and ACPICA termination: Delete all attached data objects 5369during namespace node deletion. This fix updates namespace node deletion 5370to delete the entire list of attached objects (attached via 5371AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 53721024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 5373 5374ACPICA termination: Added support to delete all objects attached to the 5375root namespace node. This fix deletes any and all objects that have been 5376attached to the root node via AcpiAttachData. Previously, none of these 5377objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 5378 5379Debug output: Do not emit the function nesting level for the in-kernel 5380build. The nesting level is really only useful during a single-thread 5381execution. Therefore, only enable this output for the AcpiExec utility. 5382Also, only emit the thread ID when executing under AcpiExec (Context 5383switches are still always detected and a message is emitted). ACPICA BZ 5384972. 5385 5386Example Code and Data Size: These are the sizes for the OS-independent 5387acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5388debug version of the code includes the debug output trace mechanism and 5389has a much larger code and data size. 5390 5391 Current Release: 5392 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 5393 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 5394 Previous Release: 5395 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 5396 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 5397 5398 53992) iASL Compiler/Disassembler and Tools: 5400 5401AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 5402correct portable POSIX header for terminal control functions. 5403 5404Disassembler: Fixed control method invocation issues related to the use 5405of the CondRefOf() operator. The problem is seen in the disassembly where 5406control method invocations may not be disassembled properly if the 5407control method name has been used previously as an argument to CondRefOf. 5408The solution is to not attempt to emit an external declaration for the 5409CondRefOf target (it is not necessary in the first place). This prevents 5410disassembler object type confusion. ACPICA BZ 988. 5411 5412Unix Makefiles: Added an option to disable compiler optimizations and the 5413_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 5414with optimizations (reportedly, gcc 4.4 for example). This change adds a 5415command line option for make (NOOPT) that disables all compiler 5416optimizations and the _FORTIFY_SOURCE compiler flag. The default 5417optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 54181034. Lv Zheng, Bob Moore. 5419 5420Tests/ASLTS: Added options to specify individual test cases and modes. 5421This allows testers running aslts.sh to optionally specify individual 5422test modes and test cases. Also added an option to disable the forced 5423generation of the ACPICA tools from source if desired. Lv Zheng. 5424 5425---------------------------------------- 542627 September 2013. Summary of changes for version 20130927: 5427 5428This release is available at https://acpica.org/downloads 5429 5430 54311) ACPICA kernel-resident subsystem: 5432 5433Fixed a problem with store operations to reference objects. This change 5434fixes a problem where a Store operation to an ArgX object that contained 5435a 5436reference to a field object did not complete the automatic dereference 5437and 5438then write to the actual field object. Instead, the object type of the 5439field object was inadvertently changed to match the type of the source 5440operand. The new behavior will actually write to the field object (buffer 5441field or field unit), thus matching the correct ACPI-defined behavior. 5442 5443Implemented support to allow the host to redefine individual OSL 5444prototypes. This change enables the host to redefine OSL prototypes found 5445in the acpiosxf.h file. This allows the host to implement OSL interfaces 5446with a macro or inlined function. Further, it allows the host to add any 5447additional required modifiers such as __iomem, __init, __exit, etc., as 5448necessary on a per-interface basis. Enables maximum flexibility for the 5449OSL interfaces. Lv Zheng. 5450 5451Hardcoded the access width for the FADT-defined reset register. The ACPI 5452specification requires the reset register width to be 8 bits. ACPICA now 5453hardcodes the width to 8 and ignores the FADT width value. This provides 5454compatibility with other ACPI implementations that have allowed BIOS code 5455with bad register width values to go unnoticed. Matthew Garett, Bob 5456Moore, 5457Lv Zheng. 5458 5459Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 5460used 5461in the OSL header (acpiosxf). The change modifies the position of this 5462macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 5463build issues if the OSL defines the implementation of the interface to be 5464an inline stub function. Lv Zheng. 5465 5466Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 5467initialization interfaces. This change adds a new macro for the main init 5468and terminate external interfaces in order to support hosts that require 5469additional or different processing for these functions. Changed from 5470ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 5471Zheng, Bob Moore. 5472 5473Cleaned up the memory allocation macros for configurability. In the 5474common 5475case, the ACPI_ALLOCATE and related macros now resolve directly to their 5476respective AcpiOs* OSL interfaces. Two options: 54771) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 5478default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 54792) For AcpiExec (and for debugging), the macros can optionally be 5480resolved 5481to the local ACPICA interfaces that track each allocation (local tracking 5482is used to immediately detect memory leaks). 5483Lv Zheng. 5484 5485Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 5486to predefine this macro to either TRUE or FALSE during the system build. 5487 5488Replaced __FUNCTION_ with __func__ in the gcc-specific header. 5489 5490Example Code and Data Size: These are the sizes for the OS-independent 5491acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5492debug version of the code includes the debug output trace mechanism and 5493has a much larger code and data size. 5494 5495 Current Release: 5496 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 5497 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 5498 Previous Release: 5499 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 5500 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5501 5502 55032) iASL Compiler/Disassembler and Tools: 5504 5505iASL: Implemented wildcard support for the -e option. This simplifies use 5506when there are many SSDTs that must be included to resolve external 5507method 5508declarations. ACPICA BZ 1041. Example: 5509 iasl -e ssdt*.dat -d dsdt.dat 5510 5511AcpiExec: Add history/line-editing for Unix/Linux systems. This change 5512adds a portable module that implements full history and limited line 5513editing for Unix and Linux systems. It does not use readline() due to 5514portability issues. Instead it uses the POSIX termio interface to put the 5515terminal in raw input mode so that the various special keys can be 5516trapped 5517(such as up/down-arrow for history support and left/right-arrow for line 5518editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 5519 5520AcpiXtract: Add support to handle (ignore) "empty" lines containing only 5521one or more spaces. This provides compatible with early or different 5522versions of the AcpiDump utility. ACPICA BZ 1044. 5523 5524AcpiDump: Do not ignore tables that contain only an ACPI table header. 5525Apparently, some BIOSs create SSDTs that contain an ACPI table header but 5526no other data. This change adds support to dump these tables. Any tables 5527shorter than the length of an ACPI table header remain in error (an error 5528message is emitted). Reported by Yi Li. 5529 5530Debugger: Echo actual command along with the "unknown command" message. 5531 5532---------------------------------------- 553323 August 2013. Summary of changes for version 20130823: 5534 55351) ACPICA kernel-resident subsystem: 5536 5537Implemented support for host-installed System Control Interrupt (SCI) 5538handlers. Certain ACPI functionality requires the host to handle raw 5539SCIs. For example, the "SCI Doorbell" that is defined for memory power 5540state support requires the host device driver to handle SCIs to examine 5541if the doorbell has been activated. Multiple SCI handlers can be 5542installed to allow for future expansion. New external interfaces are 5543AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 5544details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 5545 5546Operation region support: Never locally free the handler "context" 5547pointer. This change removes some dangerous code that attempts to free 5548the handler context pointer in some (rare) circumstances. The owner of 5549the handler owns this pointer and the ACPICA code should never touch it. 5550Although not seen to be an issue in any kernel, it did show up as a 5551problem (fault) under AcpiExec. Also, set the internal storage field for 5552the context pointer to zero when the region is deactivated, simply for 5553sanity. David Box. ACPICA BZ 1039. 5554 5555AcpiRead: On error, do not modify the return value target location. If an 5556error happens in the middle of a split 32/32 64-bit I/O operation, do not 5557modify the target of the return value pointer. Makes the code consistent 5558with the rest of ACPICA. Bjorn Helgaas. 5559 5560Example Code and Data Size: These are the sizes for the OS-independent 5561acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5562debug version of the code includes the debug output trace mechanism and 5563has a much larger code and data size. 5564 5565 Current Release: 5566 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 5567 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5568 Previous Release: 5569 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5570 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 5571 5572 55732) iASL Compiler/Disassembler and Tools: 5574 5575AcpiDump: Implemented several new features and fixed some problems: 55761) Added support to dump the RSDP, RSDT, and XSDT tables. 55772) Added support for multiple table instances (SSDT, UEFI). 55783) Added option to dump "customized" (overridden) tables (-c). 55794) Fixed a problem where some table filenames were improperly 5580constructed. 55815) Improved some error messages, removed some unnecessary messages. 5582 5583iASL: Implemented additional support for disassembly of ACPI tables that 5584contain invocations of external control methods. The -fe<file> option 5585allows the import of a file that specifies the external methods along 5586with the required number of arguments for each -- allowing for the 5587correct disassembly of the table. This is a workaround for a limitation 5588of AML code where the disassembler often cannot determine the number of 5589arguments required for an external control method and generates incorrect 5590ASL code. See the iASL reference for details. ACPICA BZ 1030. 5591 5592Debugger: Implemented a new command (paths) that displays the full 5593pathnames (namepaths) and object types of all objects in the namespace. 5594This is an alternative to the namespace command. 5595 5596Debugger: Implemented a new command (sci) that invokes the SCI dispatch 5597mechanism and any installed handlers. 5598 5599iASL: Fixed a possible segfault for "too many parent prefixes" condition. 5600This can occur if there are too many parent prefixes in a namepath (for 5601example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 5602 5603Application OSLs: Set the return value for the PCI read functions. These 5604functions simply return AE_OK, but should set the return value to zero 5605also. This change implements this. ACPICA BZ 1038. 5606 5607Debugger: Prevent possible command line buffer overflow. Increase the 5608size of a couple of the debugger line buffers, and ensure that overflow 5609cannot happen. ACPICA BZ 1037. 5610 5611iASL: Changed to abort immediately on serious errors during the parsing 5612phase. Due to the nature of ASL, there is no point in attempting to 5613compile these types of errors, and they typically end up causing a 5614cascade of hundreds of errors which obscure the original problem. 5615 5616---------------------------------------- 561725 July 2013. Summary of changes for version 20130725: 5618 56191) ACPICA kernel-resident subsystem: 5620 5621Fixed a problem with the DerefOf operator where references to FieldUnits 5622and BufferFields incorrectly returned the parent object, not the actual 5623value of the object. After this change, a dereference of a FieldUnit 5624reference results in a read operation on the field to get the value, and 5625likewise, the appropriate BufferField value is extracted from the target 5626buffer. 5627 5628Fixed a problem where the _WAK method could cause a fault under these 5629circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 5630method returned no value. The problem is rarely seen because most kernels 5631run ACPICA in slack mode. 5632 5633For the DerefOf operator, a fatal error now results if an attempt is made 5634to dereference a reference (created by the Index operator) to a NULL 5635package element. Provides compatibility with other ACPI implementations, 5636and this behavior will be added to a future version of the ACPI 5637specification. 5638 5639The ACPI Power Management Timer (defined in the FADT) is now optional. 5640This provides compatibility with other ACPI implementations and will 5641appear in the next version of the ACPI specification. If there is no PM 5642Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 5643zero in the FADT indicates no PM timer. 5644 5645Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 5646allows the host to globally enable/disable all vendor strings, all 5647feature strings, or both. Intended to be primarily used for debugging 5648purposes only. Lv Zheng. 5649 5650Expose the collected _OSI data to the host via a global variable. This 5651data tracks the highest level vendor ID that has been invoked by the BIOS 5652so that the host (and potentially ACPICA itself) can change behaviors 5653based upon the age of the BIOS. 5654 5655Example Code and Data Size: These are the sizes for the OS-independent 5656acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5657debug version of the code includes the debug output trace mechanism and 5658has a much larger code and data size. 5659 5660 Current Release: 5661 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5662 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5663 Previous Release: 5664 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5665 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5666 5667 56682) iASL Compiler/Disassembler and Tools: 5669 5670iASL: Created the following enhancements for the -so option (create 5671offset table): 56721)Add offsets for the last nameseg in each namepath for every supported 5673object type 56742)Add support for Processor, Device, Thermal Zone, and Scope objects 56753)Add the actual AML opcode for the parent object of every supported 5676object type 56774)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 5678 5679Disassembler: Emit all unresolved external symbols in a single block. 5680These are external references to control methods that could not be 5681resolved, and thus, the disassembler had to make a guess at the number of 5682arguments to parse. 5683 5684iASL: The argument to the -T option (create table template) is now 5685optional. If not specified, the default table is a DSDT, typically the 5686most common case. 5687 5688---------------------------------------- 568926 June 2013. Summary of changes for version 20130626: 5690 56911) ACPICA kernel-resident subsystem: 5692 5693Fixed an issue with runtime repair of the _CST object. Null or invalid 5694elements were not always removed properly. Lv Zheng. 5695 5696Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 5697FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 5698the maximum number of GPEs is 1016. Use of multiple GPE block devices 5699makes the system-wide number of GPEs essentially unlimited. 5700 5701Example Code and Data Size: These are the sizes for the OS-independent 5702acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5703debug version of the code includes the debug output trace mechanism and 5704has a much larger code and data size. 5705 5706 Current Release: 5707 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5708 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5709 Previous Release: 5710 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5711 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5712 5713 57142) iASL Compiler/Disassembler and Tools: 5715 5716Portable AcpiDump: Implemented full support for the Linux and FreeBSD 5717hosts. Now supports Linux, FreeBSD, and Windows. 5718 5719Disassembler: Added some missing types for the HEST and EINJ tables: "Set 5720Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 5721 5722iASL/Preprocessor: Implemented full support for nested 5723#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 5724 5725Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 5726max. The original purpose of this constraint was to limit the amount of 5727debug output. However, the string function in question (UtPrintString) is 5728now used for the disassembler also, where 256 bytes is insufficient. 5729Reported by RehabMan@GitHub. 5730 5731iASL/DataTables: Fixed some problems and issues with compilation of DMAR 5732tables. ACPICA BZ 999. Lv Zheng. 5733 5734iASL: Fixed a couple of error exit issues that could result in a "Could 5735not delete <file>" message during ASL compilation. 5736 5737AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 5738the actual signatures for these tables are "FACP" and "APIC", 5739respectively. 5740 5741AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 5742tables are allowed to have multiple instances. 5743 5744---------------------------------------- 574517 May 2013. Summary of changes for version 20130517: 5746 57471) ACPICA kernel-resident subsystem: 5748 5749Fixed a regression introduced in version 20130328 for _INI methods. This 5750change fixes a problem introduced in 20130328 where _INI methods are no 5751longer executed properly because of a memory block that was not 5752initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 5753<tomasz.nowicki@linaro.org>. 5754 5755Fixed a possible problem with the new extended sleep registers in the 5756ACPI 57575.0 FADT. Do not use these registers (even if populated) unless the HW- 5758reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 57591020. Lv Zheng. 5760 5761Implemented return value repair code for _CST predefined objects: Sort 5762the 5763list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 5764 5765Implemented a debug-only option to disable loading of SSDTs from the 5766RSDT/XSDT during ACPICA initialization. This can be useful for debugging 5767ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 5768acglobal.h - ACPICA BZ 1005. Lv Zheng. 5769 5770Fixed some issues in the ACPICA initialization and termination code: 5771Tomasz Nowicki <tomasz.nowicki@linaro.org> 57721) Clear events initialized flag upon event component termination. ACPICA 5773BZ 1013. 57742) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 57753) Delete global lock pending lock during termination. ACPICA BZ 1012. 57764) Clear debug buffer global on termination to prevent possible multiple 5777delete. ACPICA BZ 1010. 5778 5779Standardized all switch() blocks across the entire source base. After 5780many 5781years, different formatting for switch() had crept in. This change makes 5782the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 5783 5784Split some files to enhance ACPICA modularity and configurability: 57851) Split buffer dump routines into utilities/utbuffer.c 57862) Split internal error message routines into utilities/uterror.c 57873) Split table print utilities into tables/tbprint.c 57884) Split iASL command-line option processing into asloptions.c 5789 5790Makefile enhancements: 57911) Support for all new files above. 57922) Abort make on errors from any subcomponent. Chao Guan. 57933) Add build support for Apple Mac OS X. Liang Qi. 5794 5795Example Code and Data Size: These are the sizes for the OS-independent 5796acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5797debug version of the code includes the debug output trace mechanism and 5798has a much larger code and data size. 5799 5800 Current Release: 5801 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5802 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5803 Previous Release: 5804 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5805 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5806 5807 58082) iASL Compiler/Disassembler and Tools: 5809 5810New utility: Implemented an easily portable version of the acpidump 5811utility to extract ACPI tables from the system (or a file) in an ASCII 5812hex 5813dump format. The top-level code implements the various command line 5814options, file I/O, and table dump routines. To port to a new host, only 5815three functions need to be implemented to get tables -- since this 5816functionality is OS-dependent. See the tools/acpidump/apmain.c module and 5817the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 58181) The Windows version obtains the ACPI tables from the Registry. 58192) The Linux version is under development. 58203) Other hosts - If an OS-dependent module is submitted, it will be 5821distributed with ACPICA. 5822 5823iASL: Fixed a regression for -D preprocessor option (define symbol). A 5824restructuring/change to the initialization sequence caused this option to 5825no longer work properly. 5826 5827iASL: Implemented a mechanism to disable specific warnings and remarks. 5828Adds a new command line option, "-vw <messageid> as well as "#pragma 5829disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 5830 5831iASL: Fix for too-strict package object validation. The package object 5832validation for return values from the predefined names is a bit too 5833strict, it does not allow names references within the package (which will 5834be resolved at runtime.) These types of references cannot be validated at 5835compile time. This change ignores named references within package objects 5836for names that return or define static packages. 5837 5838Debugger: Fixed the 80-character command line limitation for the History 5839command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 5840 5841iASL: Added control method and package support for the -so option 5842(generates AML offset table for BIOS support.) 5843 5844iASL: issue a remark if a non-serialized method creates named objects. If 5845a thread blocks within the method for any reason, and another thread 5846enters the method, the method will fail because an attempt will be made 5847to 5848create the same (named) object twice. In this case, issue a remark that 5849the method should be marked serialized. NOTE: may become a warning later. 5850ACPICA BZ 909. 5851 5852---------------------------------------- 585318 April 2013. Summary of changes for version 20130418: 5854 58551) ACPICA kernel-resident subsystem: 5856 5857Fixed a possible buffer overrun during some rare but specific field unit 5858read operations. This overrun can only happen if the DSDT version is 1 -- 5859meaning that all AML integers are 32 bits -- and the field length is 5860between 33 and 55 bits long. During the read, an internal buffer object 5861is 5862created for the field unit because the field is larger than an integer 5863(32 5864bits). However, in this case, the buffer will be incorrectly written 5865beyond the end because the buffer length is less than the internal 5866minimum 5867of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 5868long, but a full 8 bytes will be written. 5869 5870Updated the Embedded Controller "orphan" _REG method support. This refers 5871to _REG methods under the EC device that have no corresponding operation 5872region. This is allowed by the ACPI specification. This update removes a 5873dependency on the existence an ECDT table. It will execute an orphan _REG 5874method as long as the operation region handler for the EC is installed at 5875the EC device node and not the namespace root. Rui Zhang (original 5876update), Bob Moore (update/integrate). 5877 5878Implemented run-time argument typechecking for all predefined ACPI names 5879(_STA, _BIF, etc.) This change performs object typechecking on all 5880incoming arguments for all predefined names executed via 5881AcpiEvaluateObject. This ensures that ACPI-related device drivers are 5882passing correct object types as well as the correct number of arguments 5883(therefore identifying any issues immediately). Also, the ASL/namespace 5884definition of the predefined name is checked against the ACPI 5885specification for the proper argument count. Adds one new file, 5886nsarguments.c 5887 5888Changed an exception code for the ASL UnLoad() operator. Changed the 5889exception code for the case where the input DdbHandle is invalid, from 5890AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 5891 5892Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 5893global makefile. The use of this flag causes compiler errors on earlier 5894versions of GCC, so it has been removed for compatibility. 5895 5896Miscellaneous cleanup: 58971) Removed some unused/obsolete macros 58982) Fixed a possible memory leak in the _OSI support 58993) Removed an unused variable in the predefined name support 59004) Windows OSL: remove obsolete reference to a memory list field 5901 5902Example Code and Data Size: These are the sizes for the OS-independent 5903acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5904debug version of the code includes the debug output trace mechanism and 5905has a much larger code and data size. 5906 5907 Current Release: 5908 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5909 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5910 Previous Release: 5911 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5912 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5913 5914 59152) iASL Compiler/Disassembler and Tools: 5916 5917AcpiExec: Added installation of a handler for the SystemCMOS address 5918space. This prevents control method abort if a method accesses this 5919space. 5920 5921AcpiExec: Added support for multiple EC devices, and now install EC 5922operation region handler(s) at the actual EC device instead of the 5923namespace root. This reflects the typical behavior of host operating 5924systems. 5925 5926AcpiExec: Updated to ensure that all operation region handlers are 5927installed before the _REG methods are executed. This prevents a _REG 5928method from aborting if it accesses an address space has no handler. 5929AcpiExec installs a handler for every possible address space. 5930 5931Debugger: Enhanced the "handlers" command to display non-root handlers. 5932This change enhances the handlers command to display handlers associated 5933with individual devices throughout the namespace, in addition to the 5934currently supported display of handlers associated with the root 5935namespace 5936node. 5937 5938ASL Test Suite: Several test suite errors have been identified and 5939resolved, reducing the total error count during execution. Chao Guan. 5940 5941---------------------------------------- 594228 March 2013. Summary of changes for version 20130328: 5943 59441) ACPICA kernel-resident subsystem: 5945 5946Fixed several possible race conditions with the internal object reference 5947counting mechanism. Some of the external ACPICA interfaces update object 5948reference counts without holding the interpreter or namespace lock. This 5949change adds a spinlock to protect reference count updates on the internal 5950ACPICA objects. Reported by and with assistance from Andriy Gapon 5951(avg@FreeBSD.org). 5952 5953FADT support: Removed an extraneous warning for very large GPE register 5954sets. This change removes a size mismatch warning if the legacy length 5955field for a GPE register set is larger than the 64-bit GAS structure can 5956accommodate. GPE register sets can be larger than the 255-bit width 5957limitation of the GAS structure. Linn Crosetto (linn@hp.com). 5958 5959_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 5960return from this interface. Handles a possible timeout case if 5961ACPI_WAIT_FOREVER is modified by the host to be a value less than 5962"forever". Jung-uk Kim. 5963 5964Predefined name support: Add allowed/required argument type information 5965to 5966the master predefined info table. This change adds the infrastructure to 5967enable typechecking on incoming arguments for all predefined 5968methods/objects. It does not actually contain the code that will fully 5969utilize this information, this is still under development. Also condenses 5970some duplicate code for the predefined names into a new module, 5971utilities/utpredef.c 5972 5973Example Code and Data Size: These are the sizes for the OS-independent 5974acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5975debug version of the code includes the debug output trace mechanism and 5976has a much larger code and data size. 5977 5978 Previous Release: 5979 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 5980 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 5981 Current Release: 5982 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5983 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5984 5985 59862) iASL Compiler/Disassembler and Tools: 5987 5988iASL: Implemented a new option to simplify the development of ACPI- 5989related 5990BIOS code. Adds support for a new "offset table" output file. The -so 5991option will create a C table containing the AML table offsets of various 5992named objects in the namespace so that BIOS code can modify them easily 5993at 5994boot time. This can simplify BIOS runtime code by eliminating expensive 5995searches for "magic values", enhancing boot times and adding greater 5996reliability. With assistance from Lee Hamel. 5997 5998iASL: Allow additional predefined names to return zero-length packages. 5999Now, all predefined names that are defined by the ACPI specification to 6000return a "variable-length package of packages" are allowed to return a 6001zero length top-level package. This allows the BIOS to tell the host that 6002the requested feature is not supported, and supports existing BIOS/ASL 6003code and practices. 6004 6005iASL: Changed the "result not used" warning to an error. This is the case 6006where an ASL operator is effectively a NOOP because the result of the 6007operation is not stored anywhere. For example: 6008 Add (4, Local0) 6009There is no target (missing 3rd argument), nor is the function return 6010value used. This is potentially a very serious problem -- since the code 6011was probably intended to do something, but for whatever reason, the value 6012was not stored. Therefore, this issue has been upgraded from a warning to 6013an error. 6014 6015AcpiHelp: Added allowable/required argument types to the predefined names 6016info display. This feature utilizes the recent update to the predefined 6017names table (above). 6018 6019---------------------------------------- 602014 February 2013. Summary of changes for version 20130214: 6021 60221) ACPICA Kernel-resident Subsystem: 6023 6024Fixed a possible regression on some hosts: Reinstated the safe return 6025macros (return_ACPI_STATUS, etc.) that ensure that the argument is 6026evaluated only once. Although these macros are not needed for the ACPICA 6027code itself, they are often used by ACPI-related host device drivers 6028where 6029the safe feature may be necessary. 6030 6031Fixed several issues related to the ACPI 5.0 reduced hardware support 6032(SOC): Now ensure that if the platform declares itself as hardware- 6033reduced 6034via the FADT, the following functions become NOOPs (and always return 6035AE_OK) because ACPI is always enabled by definition on these machines: 6036 AcpiEnable 6037 AcpiDisable 6038 AcpiHwGetMode 6039 AcpiHwSetMode 6040 6041Dynamic Object Repair: Implemented additional runtime repairs for 6042predefined name return values. Both of these repairs can simplify code in 6043the related device drivers that invoke these methods: 60441) For the _STR and _MLS names, automatically repair/convert an ASCII 6045string to a Unicode buffer. 60462) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 6047a 6048lone end tag descriptor in the following cases: A Return(0) was executed, 6049a null buffer was returned, or no object at all was returned (non-slack 6050mode only). Adds a new file, nsconvert.c 6051ACPICA BZ 998. Bob Moore, Lv Zheng. 6052 6053Resource Manager: Added additional code to prevent possible infinite 6054loops 6055while traversing corrupted or ill-formed resource template buffers. Check 6056for zero-length resource descriptors in all code that loops through 6057resource templates (the length field is used to index through the 6058template). This change also hardens the external AcpiWalkResources and 6059AcpiWalkResourceBuffer interfaces. 6060 6061Local Cache Manager: Enhanced the main data structure to eliminate an 6062unnecessary mechanism to access the next object in the list. Actually 6063provides a small performance enhancement for hosts that use the local 6064ACPICA cache manager. Jung-uk Kim. 6065 6066Example Code and Data Size: These are the sizes for the OS-independent 6067acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6068debug version of the code includes the debug output trace mechanism and 6069has a much larger code and data size. 6070 6071 Previous Release: 6072 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 6073 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 6074 Current Release: 6075 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 6076 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 6077 6078 60792) iASL Compiler/Disassembler and Tools: 6080 6081iASL/Disassembler: Fixed several issues with the definition of the ACPI 60825.0 RASF table (RAS Feature Table). This change incorporates late changes 6083that were made to the ACPI 5.0 specification. 6084 6085iASL/Disassembler: Added full support for the following new ACPI tables: 6086 1) The MTMR table (MID Timer Table) 6087 2) The VRTC table (Virtual Real Time Clock Table). 6088Includes header file, disassembler, table compiler, and template support 6089for both tables. 6090 6091iASL: Implemented compile-time validation of package objects returned by 6092predefined names. This new feature validates static package objects 6093returned by the various predefined names defined to return packages. Both 6094object types and package lengths are validated, for both parent packages 6095and sub-packages, if any. The code is similar in structure and behavior 6096to 6097the runtime repair mechanism within the AML interpreter and uses the 6098existing predefined name information table. Adds a new file, aslprepkg.c. 6099ACPICA BZ 938. 6100 6101iASL: Implemented auto-detection of binary ACPI tables for disassembly. 6102This feature detects a binary file with a valid ACPI table header and 6103invokes the disassembler automatically. Eliminates the need to 6104specifically invoke the disassembler with the -d option. ACPICA BZ 862. 6105 6106iASL/Disassembler: Added several warnings for the case where there are 6107unresolved control methods during the disassembly. This can potentially 6108cause errors when the output file is compiled, because the disassembler 6109assumes zero method arguments in these cases (it cannot determine the 6110actual number of arguments without resolution/definition of the method). 6111 6112Debugger: Added support to display all resources with a single command. 6113Invocation of the resources command with no arguments will now display 6114all 6115resources within the current namespace. 6116 6117AcpiHelp: Added descriptive text for each ACPICA exception code displayed 6118via the -e option. 6119 6120---------------------------------------- 612117 January 2013. Summary of changes for version 20130117: 6122 61231) ACPICA Kernel-resident Subsystem: 6124 6125Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 6126return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 6127objects to return a package containing one integer, most BIOS code 6128returns 6129two integers and the previous code reflects that. However, we also need 6130to 6131support BIOS code that actually implements to the ACPI spec, and this 6132change reflects this. 6133 6134Fixed two issues with the ACPI_DEBUG_PRINT macros: 61351) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 6136C compilers that require this support. 61372) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 6138ACPI_DEBUG is already used by many of the various hosts. 6139 6140Updated all ACPICA copyrights and signons to 2013. Added the 2013 6141copyright to all module headers and signons, including the standard Linux 6142header. This affects virtually every file in the ACPICA core subsystem, 6143iASL compiler, all ACPICA utilities, and the test suites. 6144 6145Example Code and Data Size: These are the sizes for the OS-independent 6146acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6147debug version of the code includes the debug output trace mechanism and 6148has a much larger code and data size. 6149 6150 Previous Release: 6151 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 6152 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 6153 Current Release: 6154 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 6155 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 6156 6157 61582) iASL Compiler/Disassembler and Tools: 6159 6160Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 6161prevent a possible fault on some hosts. Some C libraries modify the arg 6162pointer parameter to vfprintf making it difficult to call it twice in the 6163AcpiOsVprintf function. Use a local buffer to workaround this issue. This 6164does not affect the Windows OSL since the Win C library does not modify 6165the arg pointer. Chao Guan, Bob Moore. 6166 6167iASL: Fixed a possible infinite loop when the maximum error count is 6168reached. If an output file other than the .AML file is specified (such as 6169a listing file), and the maximum number of errors is reached, do not 6170attempt to flush data to the output file(s) as the compiler is aborting. 6171This can cause an infinite loop as the max error count code essentially 6172keeps calling itself. 6173 6174iASL/Disassembler: Added an option (-in) to ignore NOOP 6175opcodes/operators. 6176Implemented for both the compiler and the disassembler. Often, the NOOP 6177opcode is used as padding for packages that are changed dynamically by 6178the 6179BIOS. When disassembled and recompiled, these NOOPs will cause syntax 6180errors. This option causes the disassembler to ignore all NOOP opcodes 6181(0xA3), and it also causes the compiler to ignore all ASL source code 6182NOOP 6183statements as well. 6184 6185Debugger: Enhanced the Sleep command to execute all sleep states. This 6186change allows Sleep to be invoked with no arguments and causes the 6187debugger to execute all of the sleep states, 0-5, automatically. 6188 6189---------------------------------------- 619020 December 2012. Summary of changes for version 20121220: 6191 61921) ACPICA Kernel-resident Subsystem: 6193 6194Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 6195alternate entry point for AcpiWalkResources and improves the usability of 6196the resource manager by accepting as input a buffer containing the output 6197of either a _CRS, _PRS, or _AEI method. The key functionality is that the 6198input buffer is not deleted by this interface so that it can be used by 6199the host later. See the ACPICA reference for details. 6200 6201Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 6202(DSDT version < 2). The constant will be truncated and this warning 6203reflects that behavior. 6204 6205Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 6206ExtendedInterrupt, and GpioInt descriptors. This change adds support to 6207both get and set the new wake bit in these descriptors, separately from 6208the existing share bit. Reported by Aaron Lu. 6209 6210Interpreter: Fix Store() when an implicit conversion is not possible. For 6211example, in the cases such as a store of a string to an existing package 6212object, implement the store as a CopyObject(). This is a small departure 6213from the ACPI specification which states that the control method should 6214be 6215aborted in this case. However, the ASLTS suite depends on this behavior. 6216 6217Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 6218macros: check if debug output is currently enabled as soon as possible to 6219minimize performance impact if debug is in fact not enabled. 6220 6221Source code restructuring: Cleanup to improve modularity. The following 6222new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 6223psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 6224Associated makefiles and project files have been updated. 6225 6226Changed an exception code for LoadTable operator. For the case where one 6227of the input strings is too long, change the returned exception code from 6228AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 6229 6230Fixed a possible memory leak in dispatcher error path. On error, delete 6231the mutex object created during method mutex creation. Reported by 6232tim.gardner@canonical.com. 6233 6234Example Code and Data Size: These are the sizes for the OS-independent 6235acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6236debug version of the code includes the debug output trace mechanism and 6237has a much larger code and data size. 6238 6239 Previous Release: 6240 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 6241 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6242 Current Release: 6243 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 6244 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 6245 6246 62472) iASL Compiler/Disassembler and Tools: 6248 6249iASL: Disallow a method call as argument to the ObjectType ASL operator. 6250This change tracks an errata to the ACPI 5.0 document. The AML grammar 6251will not allow the interpreter to differentiate between a method and a 6252method invocation when these are used as an argument to the ObjectType 6253operator. The ACPI specification change is to disallow a method 6254invocation 6255(UserTerm) for the ObjectType operator. 6256 6257Finish support for the TPM2 and CSRT tables in the headers, table 6258compiler, and disassembler. 6259 6260Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 6261always expires immediately if the semaphore is not available. The 6262original 6263code was using a relative-time timeout, but sem_timedwait requires the 6264use 6265of an absolute time. 6266 6267iASL: Added a remark if the Timer() operator is used within a 32-bit 6268table. This operator returns a 64-bit time value that will be truncated 6269within a 32-bit table. 6270 6271iASL Source code restructuring: Cleanup to improve modularity. The 6272following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 6273aslmethod.c, and aslfileio.c. Associated makefiles and project files have 6274been updated. 6275 6276 6277---------------------------------------- 627814 November 2012. Summary of changes for version 20121114: 6279 62801) ACPICA Kernel-resident Subsystem: 6281 6282Implemented a performance enhancement for ACPI/AML Package objects. This 6283change greatly increases the performance of Package objects within the 6284interpreter. It changes the processing of reference counts for packages 6285by 6286optimizing for the most common case where the package sub-objects are 6287either Integers, Strings, or Buffers. Increases the overall performance 6288of 6289the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 62902X.) 6291Chao Guan. ACPICA BZ 943. 6292 6293Implemented and deployed common macros to extract flag bits from resource 6294descriptors. Improves readability and maintainability of the code. Fixes 6295a 6296problem with the UART serial bus descriptor for the number of data bits 6297flags (was incorrectly 2 bits, should be 3). 6298 6299Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 6300of the macros and changed the SETx macros to the style of (destination, 6301source). Also added ACPI_CASTx companion macros. Lv Zheng. 6302 6303Example Code and Data Size: These are the sizes for the OS-independent 6304acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6305debug version of the code includes the debug output trace mechanism and 6306has a much larger code and data size. 6307 6308 Previous Release: 6309 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 6310 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6311 Current Release: 6312 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 6313 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6314 6315 63162) iASL Compiler/Disassembler and Tools: 6317 6318Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 6319adds the ShareAndWake and ExclusiveAndWake flags which were added to the 6320Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 6321 6322Disassembler: Fixed a problem with external declaration generation. Fixes 6323a problem where an incorrect pathname could be generated for an external 6324declaration if the original reference to the object includes leading 6325carats (^). ACPICA BZ 984. 6326 6327Debugger: Completed a major update for the Disassemble<method> command. 6328This command was out-of-date and did not properly disassemble control 6329methods that had any reasonable complexity. This fix brings the command 6330up 6331to the same level as the rest of the disassembler. Adds one new file, 6332dmdeferred.c, which is existing code that is now common with the main 6333disassembler and the debugger disassemble command. ACPICA MZ 978. 6334 6335iASL: Moved the parser entry prototype to avoid a duplicate declaration. 6336Newer versions of Bison emit this prototype, so moved the prototype out 6337of 6338the iASL header to where it is actually used in order to avoid a 6339duplicate 6340declaration. 6341 6342iASL/Tools: Standardized use of the stream I/O functions: 6343 1) Ensure check for I/O error after every fopen/fread/fwrite 6344 2) Ensure proper order of size/count arguments for fread/fwrite 6345 3) Use test of (Actual != Requested) after all fwrite, and most fread 6346 4) Standardize I/O error messages 6347Improves reliability and maintainability of the code. Bob Moore, Lv 6348Zheng. 6349ACPICA BZ 981. 6350 6351Disassembler: Prevent duplicate External() statements. During generation 6352of external statements, detect similar pathnames that are actually 6353duplicates such as these: 6354 External (\ABCD) 6355 External (ABCD) 6356Remove all leading '\' characters from pathnames during the external 6357statement generation so that duplicates will be detected and tossed. 6358ACPICA BZ 985. 6359 6360Tools: Replace low-level I/O with stream I/O functions. Replace 6361open/read/write/close with the stream I/O equivalents 6362fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 6363Moore. 6364 6365AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 6366name header so that AcpiXtract recognizes the output file/table. 6367 6368iASL: Remove obsolete -2 option flag. Originally intended to force the 6369compiler/disassembler into an ACPI 2.0 mode, this was never implemented 6370and the entire concept is now obsolete. 6371 6372---------------------------------------- 637318 October 2012. Summary of changes for version 20121018: 6374 6375 63761) ACPICA Kernel-resident Subsystem: 6377 6378Updated support for the ACPI 5.0 MPST table. Fixes some problems 6379introduced by late changes to the table as it was added to the ACPI 5.0 6380specification. Includes header, disassembler, and data table compiler 6381support as well as a new version of the MPST template. 6382 6383AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 63845.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 6385methods: _HID, _CID, and _UID. 6386 6387Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 6388ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 6389name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 6390names for their various drivers. Affects the AcpiGetObjectInfo external 6391interface, and other internal interfaces as well. 6392 6393Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 6394This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 6395on machines that support non-aligned transfers. Optimizes for this case 6396rather than using a strncpy. With assistance from Zheng Lv. 6397 6398Resource Manager: Small fix for buffer size calculation. Fixed a one byte 6399error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 6400 6401Added a new debug print message for AML mutex objects that are force- 6402released. At control method termination, any currently acquired mutex 6403objects are force-released. Adds a new debug-only message for each one 6404that is released. 6405 6406Audited/updated all ACPICA return macros and the function debug depth 6407counter: 1) Ensure that all functions that use the various TRACE macros 6408also use the appropriate ACPICA return macros. 2) Ensure that all normal 6409return statements surround the return expression (value) with parens to 6410ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 6411Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 6412 6413Global source code changes/maintenance: All extra lines at the start and 6414end of each source file have been removed for consistency. Also, within 6415comments, all new sentences start with a single space instead of a double 6416space, again for consistency across the code base. 6417 6418Example Code and Data Size: These are the sizes for the OS-independent 6419acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6420debug version of the code includes the debug output trace mechanism and 6421has a much larger code and data size. 6422 6423 Previous Release: 6424 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 6425 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 6426 Current Release: 6427 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 6428 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6429 6430 64312) iASL Compiler/Disassembler and Tools: 6432 6433AcpiExec: Improved the algorithm used for memory leak/corruption 6434detection. Added some intelligence to the code that maintains the global 6435list of allocated memory. The list is now ordered by allocated memory 6436address, significantly improving performance. When running AcpiExec on 6437the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 6438on the platform and/or the environment. Note, this performance 6439enhancement affects the AcpiExec utility only, not the kernel-resident 6440ACPICA code. 6441 6442Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 6443the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 6444incorrect table offset reported for invalid opcodes. Report the original 644532-bit value for bad ACPI_NAMEs (as well as the repaired name.) 6446 6447Disassembler: Enhanced the -vt option to emit the binary table data in 6448hex format to assist with debugging. 6449 6450Fixed a potential filename buffer overflow in osunixdir.c. Increased the 6451size of file structure. Colin Ian King. 6452 6453---------------------------------------- 645413 September 2012. Summary of changes for version 20120913: 6455 6456 64571) ACPICA Kernel-resident Subsystem: 6458 6459ACPI 5.0: Added two new notify types for the Hardware Error Notification 6460Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 6461and 6462MCE(6). 6463 6464Table Manager: Merged/removed duplicate code in the root table resize 6465functions. One function is external, the other is internal. Lv Zheng, 6466ACPICA 6467BZ 846. 6468 6469Makefiles: Completely removed the obsolete "Linux" makefiles under 6470acpica/generate/linux. These makefiles are obsolete and have been 6471replaced 6472by 6473the generic unix makefiles under acpica/generate/unix. 6474 6475Makefiles: Ensure that binary files always copied properly. Minor rule 6476change 6477to ensure that the final binary output files are always copied up to the 6478appropriate binary directory (bin32 or bin64.) 6479 6480Example Code and Data Size: These are the sizes for the OS-independent 6481acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6482debug 6483version of the code includes the debug output trace mechanism and has a 6484much 6485larger code and data size. 6486 6487 Previous Release: 6488 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6489 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6490 Current Release: 6491 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 6492 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 6493 6494 64952) iASL Compiler/Disassembler and Tools: 6496 6497Disassembler: Fixed a possible fault during the disassembly of resource 6498descriptors when a second parse is required because of the invocation of 6499external control methods within the table. With assistance from 6500adq@lidskialf.net. ACPICA BZ 976. 6501 6502iASL: Fixed a namepath optimization problem. An error can occur if the 6503parse 6504node that contains the namepath to be optimized does not have a parent 6505node 6506that is a named object. This change fixes the problem. 6507 6508iASL: Fixed a regression where the AML file is not deleted on errors. The 6509AML 6510output file should be deleted if there are any errors during the 6511compiler. 6512The 6513only exception is if the -f (force output) option is used. ACPICA BZ 974. 6514 6515iASL: Added a feature to automatically increase internal line buffer 6516sizes. 6517Via realloc(), automatically increase the internal line buffer sizes as 6518necessary to support very long source code lines. The current version of 6519the 6520preprocessor requires a buffer long enough to contain full source code 6521lines. 6522This change increases the line buffer(s) if the input lines go beyond the 6523current buffer size. This eliminates errors that occurred when a source 6524code 6525line was longer than the buffer. 6526 6527iASL: Fixed a problem with constant folding in method declarations. The 6528SyncLevel term is a ByteConstExpr, and incorrect code would be generated 6529if a 6530Type3 opcode was used. 6531 6532Debugger: Improved command help support. For incorrect argument count, 6533display 6534full help for the command. For help command itself, allow an argument to 6535specify a command. 6536 6537Test Suites: Several bug fixes for the ASLTS suite reduces the number of 6538errors during execution of the suite. Guan Chao. 6539 6540---------------------------------------- 654116 August 2012. Summary of changes for version 20120816: 6542 6543 65441) ACPICA Kernel-resident Subsystem: 6545 6546Removed all use of the deprecated _GTS and _BFS predefined methods. The 6547_GTS 6548(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 6549deprecated and will probably be removed from the ACPI specification. 6550Windows 6551does not invoke them, and reportedly never will. The final nail in the 6552coffin 6553is that the ACPI specification states that these methods must be run with 6554interrupts off, which is not going to happen in a kernel interpreter. 6555Note: 6556Linux has removed all use of the methods also. It was discovered that 6557invoking these functions caused failures on some machines, probably 6558because 6559they were never tested since Windows does not call them. Affects two 6560external 6561interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 6562ACPICA BZ 969. 6563 6564Implemented support for complex bit-packed buffers returned from the _PLD 6565(Physical Location of Device) predefined method. Adds a new external 6566interface, AcpiDecodePldBuffer that parses the buffer into a more usable 6567C 6568structure. Note: C Bitfields cannot be used for this type of predefined 6569structure since the memory layout of individual bitfields is not defined 6570by 6571the C language. In addition, there are endian concerns where a compiler 6572will 6573change the bitfield ordering based on the machine type. The new ACPICA 6574interface eliminates these issues, and should be called after _PLD is 6575executed. ACPICA BZ 954. 6576 6577Implemented a change to allow a scope change to root (via "Scope (\)") 6578during 6579execution of module-level ASL code (code that is executed at table load 6580time.) Lin Ming. 6581 6582Added the Windows8/Server2012 string for the _OSI method. This change 6583adds 6584a 6585new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 65862012. 6587 6588Added header support for the new ACPI tables DBG2 (Debug Port Table Type 65892) 6590and CSRT (Core System Resource Table). 6591 6592Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 6593names. This simplifies access to the buffers returned by these predefined 6594names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 6595 6596GPE support: Removed an extraneous parameter from the various low-level 6597internal GPE functions. Tang Feng. 6598 6599Removed the linux makefiles from the unix packages. The generate/linux 6600makefiles are obsolete and have been removed from the unix tarball 6601release 6602packages. The replacement makefiles are under generate/unix, and there is 6603a 6604top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 6605 6606Updates for Unix makefiles: 66071) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 66082) Update linker flags (move to end of command line) for AcpiExec 6609utility. 6610Guan Chao. 6611 6612Split ACPICA initialization functions to new file, utxfinit.c. Split from 6613utxface.c to improve modularity and reduce file size. 6614 6615Example Code and Data Size: These are the sizes for the OS-independent 6616acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6617debug version of the code includes the debug output trace mechanism and 6618has a 6619much larger code and data size. 6620 6621 Previous Release: 6622 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6623 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6624 Current Release: 6625 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6626 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6627 6628 66292) iASL Compiler/Disassembler and Tools: 6630 6631iASL: Fixed a problem with constant folding for fixed-length constant 6632expressions. The constant-folding code was not being invoked for constant 6633expressions that allow the use of type 3/4/5 opcodes to generate 6634constants 6635for expressions such as ByteConstExpr, WordConstExpr, etc. This could 6636result 6637in the generation of invalid AML bytecode. ACPICA BZ 970. 6638 6639iASL: Fixed a generation issue on newer versions of Bison. Newer versions 6640apparently automatically emit some of the necessary externals. This 6641change 6642handles these versions in order to eliminate generation warnings. 6643 6644Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 6645 6646Disassembler: Add support to decode _PLD buffers. The decoded buffer 6647appears 6648within comments in the output file. 6649 6650Debugger: Fixed a regression with the "Threads" command where 6651AE_BAD_PARAMETER was always returned. 6652 6653---------------------------------------- 665411 July 2012. Summary of changes for version 20120711: 6655 66561) ACPICA Kernel-resident Subsystem: 6657 6658Fixed a possible fault in the return package object repair code. Fixes a 6659problem that can occur when a lone package object is wrapped with an 6660outer 6661package object in order to force conformance to the ACPI specification. 6662Can 6663affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 6664_DLM, 6665_CSD, _PSD, _TSD. 6666 6667Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 6668PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 6669ARB_DIS bit must be implemented in the host-dependent C3 processor power 6670state 6671support. Note, ARB_DIS is obsolete and only applies to older chipsets, 6672both 6673Intel and other vendors. (for Intel: ICH4-M and earlier) 6674 6675This change removes the code to disable/enable bus master arbitration 6676during 6677suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 6678causes 6679resume problems on some machines. The change has been in use for over 6680seven 6681years within Linux. 6682 6683Implemented two new external interfaces to support host-directed dynamic 6684ACPI 6685table load and unload. They are intended to simplify the host 6686implementation 6687of hot-plug support: 6688 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 6689 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 6690table. 6691See the ACPICA reference for additional details. Adds one new file, 6692components/tables/tbxfload.c 6693 6694Implemented and deployed two new interfaces for errors and warnings that 6695are 6696known to be caused by BIOS/firmware issues: 6697 AcpiBiosError: Prints "ACPI Firmware Error" message. 6698 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 6699Deployed these new interfaces in the ACPICA Table Manager code for ACPI 6700table 6701and FADT errors. Additional deployment to be completed as appropriate in 6702the 6703future. The associated conditional macros are ACPI_BIOS_ERROR and 6704ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 6705ACPICA 6706BZ 6707843. 6708 6709Implicit notify support: ensure that no memory allocation occurs within a 6710critical region. This fix moves a memory allocation outside of the time 6711that a 6712spinlock is held. Fixes issues on systems that do not allow this 6713behavior. 6714Jung-uk Kim. 6715 6716Split exception code utilities and tables into a new file, 6717utilities/utexcep.c 6718 6719Example Code and Data Size: These are the sizes for the OS-independent 6720acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6721debug 6722version of the code includes the debug output trace mechanism and has a 6723much 6724larger code and data size. 6725 6726 Previous Release: 6727 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6728 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6729 Current Release: 6730 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6731 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6732 6733 67342) iASL Compiler/Disassembler and Tools: 6735 6736iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 6737of 67380. Jung-uk Kim. 6739 6740Debugger: Enhanced the "tables" command to emit additional information 6741about 6742the current set of ACPI tables, including the owner ID and flags decode. 6743 6744Debugger: Reimplemented the "unload" command to use the new 6745AcpiUnloadParentTable external interface. This command was disable 6746previously 6747due to need for an unload interface. 6748 6749AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 6750option 6751will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 6752 6753---------------------------------------- 675420 June 2012. Summary of changes for version 20120620: 6755 6756 67571) ACPICA Kernel-resident Subsystem: 6758 6759Implemented support to expand the "implicit notify" feature to allow 6760multiple 6761devices to be notified by a single GPE. This feature automatically 6762generates a 6763runtime device notification in the absence of a BIOS-provided GPE control 6764method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 6765notify is 6766provided by ACPICA for Windows compatibility, and is a workaround for 6767BIOS 6768AML 6769code errors. See the description of the AcpiSetupGpeForWake interface in 6770the 6771APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 6772 6773Changed some comments and internal function names to simplify and ensure 6774correctness of the Linux code translation. No functional changes. 6775 6776Example Code and Data Size: These are the sizes for the OS-independent 6777acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6778debug 6779version of the code includes the debug output trace mechanism and has a 6780much 6781larger code and data size. 6782 6783 Previous Release: 6784 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6785 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6786 Current Release: 6787 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6788 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6789 6790 67912) iASL Compiler/Disassembler and Tools: 6792 6793Disassembler: Added support to emit short, commented descriptions for the 6794ACPI 6795predefined names in order to improve the readability of the disassembled 6796output. ACPICA BZ 959. Changes include: 6797 1) Emit descriptions for all standard predefined names (_INI, _STA, 6798_PRW, 6799etc.) 6800 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 6801 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 6802etc.) 6803 6804AcpiSrc: Fixed several long-standing Linux code translation issues. 6805Argument 6806descriptions in function headers are now translated properly to lower 6807case 6808and 6809underscores. ACPICA BZ 961. Also fixes translation problems such as 6810these: 6811(old -> new) 6812 i_aSL -> iASL 6813 00-7_f -> 00-7F 6814 16_k -> 16K 6815 local_fADT -> local_FADT 6816 execute_oSI -> execute_OSI 6817 6818iASL: Fixed a problem where null bytes were inadvertently emitted into 6819some 6820listing files. 6821 6822iASL: Added the existing debug options to the standard help screen. There 6823are 6824no longer two different help screens. ACPICA BZ 957. 6825 6826AcpiHelp: Fixed some typos in the various predefined name descriptions. 6827Also 6828expand some of the descriptions where appropriate. 6829 6830iASL: Fixed the -ot option (display compile times/statistics). Was not 6831working 6832properly for standard output; only worked for the debug file case. 6833 6834---------------------------------------- 683518 May 2012. Summary of changes for version 20120518: 6836 6837 68381) ACPICA Core Subsystem: 6839 6840Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 6841defined 6842to block until asynchronous events such as notifies and GPEs have 6843completed. 6844Within ACPICA, it is only called before a notify or GPE handler is 6845removed/uninstalled. It also may be useful for the host OS within related 6846drivers such as the Embedded Controller driver. See the ACPICA reference 6847for 6848additional information. ACPICA BZ 868. 6849 6850ACPI Tables: Added a new error message for a possible overflow failure 6851during 6852the conversion of FADT 32-bit legacy register addresses to internal 6853common 685464- 6855bit GAS structure representation. The GAS has a one-byte "bit length" 6856field, 6857thus limiting the register length to 255 bits. ACPICA BZ 953. 6858 6859Example Code and Data Size: These are the sizes for the OS-independent 6860acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6861debug 6862version of the code includes the debug output trace mechanism and has a 6863much 6864larger code and data size. 6865 6866 Previous Release: 6867 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6868 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6869 Current Release: 6870 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6871 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6872 6873 68742) iASL Compiler/Disassembler and Tools: 6875 6876iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 6877macro. 6878This keyword was added late in the ACPI 5.0 release cycle and was not 6879implemented until now. 6880 6881Disassembler: Added support for Operation Region externals. Adds missing 6882support for operation regions that are defined in another table, and 6883referenced locally via a Field or BankField ASL operator. Now generates 6884the 6885correct External statement. 6886 6887Disassembler: Several additional fixes for the External() statement 6888generation 6889related to some ASL operators. Also, order the External() statements 6890alphabetically in the disassembler output. Fixes the External() 6891generation 6892for 6893the Create* field, Alias, and Scope operators: 6894 1) Create* buffer field operators - fix type mismatch warning on 6895disassembly 6896 2) Alias - implement missing External support 6897 3) Scope - fix to make sure all necessary externals are emitted. 6898 6899iASL: Improved pathname support. For include files, merge the prefix 6900pathname 6901with the file pathname and eliminate unnecessary components. Convert 6902backslashes in all pathnames to forward slashes, for readability. Include 6903file 6904pathname changes affect both #include and Include() type operators. 6905 6906iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 6907end 6908of a valid line by inserting a newline and then returning the EOF during 6909the 6910next call to GetNextLine. Prevents the line from being ignored due to EOF 6911condition. 6912 6913iASL: Implemented some changes to enhance the IDE support (-vi option.) 6914Error 6915and Warning messages are now correctly recognized for both the source 6916code 6917browser and the global error and warning counts. 6918 6919---------------------------------------- 692020 April 2012. Summary of changes for version 20120420: 6921 6922 69231) ACPICA Core Subsystem: 6924 6925Implemented support for multiple notify handlers. This change adds 6926support 6927to 6928allow multiple system and device notify handlers on Device, Thermal Zone, 6929and 6930Processor objects. This can simplify the host OS notification 6931implementation. 6932Also re-worked and restructured the entire notify support code to 6933simplify 6934handler installation, handler removal, notify event queuing, and notify 6935dispatch to handler(s). Note: there can still only be two global notify 6936handlers - one for system notifies and one for device notifies. There are 6937no 6938changes to the existing handler install/remove interfaces. Lin Ming, Bob 6939Moore, Rafael Wysocki. 6940 6941Fixed a regression in the package repair code where the object reference 6942count was calculated incorrectly. Regression was introduced in the commit 6943"Support to add Package wrappers". 6944 6945Fixed a couple possible memory leaks in the AML parser, in the error 6946recovery 6947path. Jesper Juhl, Lin Ming. 6948 6949Example Code and Data Size: These are the sizes for the OS-independent 6950acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6951debug version of the code includes the debug output trace mechanism and 6952has a 6953much larger code and data size. 6954 6955 Previous Release: 6956 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6957 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6958 Current Release: 6959 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6960 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6961 6962 69632) iASL Compiler/Disassembler and Tools: 6964 6965iASL: Fixed a problem with the resource descriptor support where the 6966length 6967of the StartDependentFn and StartDependentFnNoPrio descriptors were not 6968included in cumulative descriptor offset, resulting in incorrect values 6969for 6970resource tags within resource descriptors appearing after a 6971StartDependent* 6972descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 6973 6974iASL and Preprocessor: Implemented full support for the #line directive 6975to 6976correctly track original source file line numbers through the .i 6977preprocessor 6978output file - for error and warning messages. 6979 6980iASL: Expand the allowable byte constants for address space IDs. 6981Previously, 6982the allowable range was 0x80-0xFF (user-defined spaces), now the range is 69830x0A-0xFF to allow for custom and new IDs without changing the compiler. 6984 6985iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 6986 6987iASL: Add option to completely disable the preprocessor (-Pn). 6988 6989iASL: Now emit all error/warning messages to standard error (stderr) by 6990default (instead of the previous stdout). 6991 6992ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 6993Update 6994for resource descriptor offset fix above. Update/cleanup error output 6995routines. Enable and send iASL errors/warnings to an error logfile 6996(error.txt). Send all other iASL output to a logfile (compiler.txt). 6997Fixed 6998several extraneous "unrecognized operator" messages. 6999 7000---------------------------------------- 700120 March 2012. Summary of changes for version 20120320: 7002 7003 70041) ACPICA Core Subsystem: 7005 7006Enhanced the sleep/wake interfaces to optionally execute the _GTS method 7007(Going To Sleep) and the _BFS method (Back From Sleep). Windows 7008apparently 7009does not execute these methods, and therefore these methods are often 7010untested. It has been seen on some systems where the execution of these 7011methods causes errors and also prevents the machine from entering S5. It 7012is 7013therefore suggested that host operating systems do not execute these 7014methods 7015by default. In the future, perhaps these methods can be optionally 7016executed 7017based on the age of the system and/or what is the newest version of 7018Windows 7019that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 7020and 7021AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 7022Ming. 7023 7024Fixed a problem where the length of the local/common FADT was set too 7025early. 7026The local FADT table length cannot be set to the common length until the 7027original length has been examined. There is code that checks the table 7028length 7029and sets various fields appropriately. This can affect older machines 7030with 7031early FADT versions. For example, this can cause inadvertent writes to 7032the 7033CST_CNT register. Julian Anastasov. 7034 7035Fixed a mapping issue related to a physical table override. Use the 7036deferred 7037mapping mechanism for tables loaded via the physical override OSL 7038interface. 7039This allows for early mapping before the virtual memory manager is 7040available. 7041Thomas Renninger, Bob Moore. 7042 7043Enhanced the automatic return-object repair code: Repair a common problem 7044with 7045predefined methods that are defined to return a variable-length Package 7046of 7047sub-objects. If there is only one sub-object, some BIOS ASL code 7048mistakenly 7049simply returns the single object instead of a Package with one sub- 7050object. 7051This new support will repair this error by wrapping a Package object 7052around 7053the original object, creating the correct and expected Package with one 7054sub- 7055object. Names that can be repaired in this manner include: _ALR, _CSD, 7056_HPX, 7057_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 7058939. 7059 7060Changed the exception code returned for invalid ACPI paths passed as 7061parameters to external interfaces such as AcpiEvaluateObject. Was 7062AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 7063 7064Example Code and Data Size: These are the sizes for the OS-independent 7065acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7066debug 7067version of the code includes the debug output trace mechanism and has a 7068much 7069larger code and data size. 7070 7071 Previous Release: 7072 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 7073 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 7074 Current Release: 7075 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 7076 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 7077 7078 70792) iASL Compiler/Disassembler and Tools: 7080 7081iASL: Added the infrastructure and initial implementation of a integrated 7082C- 7083like preprocessor. This will simplify BIOS development process by 7084eliminating 7085the need for a separate preprocessing step during builds. On Windows, it 7086also 7087eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 7088features including full #define() macro support are still under 7089development. 7090These preprocessor directives are supported: 7091 #define 7092 #elif 7093 #else 7094 #endif 7095 #error 7096 #if 7097 #ifdef 7098 #ifndef 7099 #include 7100 #pragma message 7101 #undef 7102 #warning 7103In addition, these new command line options are supported: 7104 -D <symbol> Define symbol for preprocessor use 7105 -li Create preprocessed output file (*.i) 7106 -P Preprocess only and create preprocessor output file (*.i) 7107 7108Table Compiler: Fixed a problem where the equals operator within an 7109expression 7110did not work properly. 7111 7112Updated iASL to use the current versions of Bison/Flex. Updated the 7113Windows 7114project file to invoke these tools from the standard location. ACPICA BZ 7115904. 7116Versions supported: 7117 Flex for Windows: V2.5.4 7118 Bison for Windows: V2.4.1 7119 7120---------------------------------------- 712115 February 2012. Summary of changes for version 20120215: 7122 7123 71241) ACPICA Core Subsystem: 7125 7126There have been some major changes to the sleep/wake support code, as 7127described below (a - e). 7128 7129a) The AcpiLeaveSleepState has been split into two interfaces, similar to 7130AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 7131AcpiLeaveSleepStatePrep. This allows the host to perform actions between 7132the 7133time the _BFS method is called and the _WAK method is called. NOTE: all 7134hosts 7135must update their wake/resume code or else sleep/wake will not work 7136properly. 7137Rafael Wysocki. 7138 7139b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 7140_WAK 7141method. Some machines require that the GPEs are enabled before the _WAK 7142method 7143is executed. Thomas Renninger. 7144 7145c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 7146bit. 7147Some BIOS code assumes that WAK_STS will be cleared on resume and use it 7148to 7149determine whether the system is rebooting or resuming. Matthew Garrett. 7150 7151d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 7152Sleep) to 7153match the ACPI specification requirement. Rafael Wysocki. 7154 7155e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 7156registers within the V5 FADT. This support adds two new files: 7157hardware/hwesleep.c implements the support for the new registers. Moved 7158all 7159sleep/wake external interfaces to hardware/hwxfsleep.c. 7160 7161 7162Added a new OSL interface for ACPI table overrides, 7163AcpiOsPhysicalTableOverride. This interface allows the host to override a 7164table via a physical address, instead of the logical address required by 7165AcpiOsTableOverride. This simplifies the host implementation. Initial 7166implementation by Thomas Renninger. The ACPICA implementation creates a 7167single 7168shared function for table overrides that attempts both a logical and a 7169physical override. 7170 7171Expanded the OSL memory read/write interfaces to 64-bit data 7172(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 7173transfer support for GAS register structures passed to AcpiRead and 7174AcpiWrite. 7175 7176Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 7177custom 7178build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 7179model. 7180See the ACPICA reference for details. ACPICA BZ 942. This option removes 7181about 718210% of the code and 5% of the static data, and the following hardware 7183ACPI 7184features become unavailable: 7185 PM Event and Control registers 7186 SCI interrupt (and handler) 7187 Fixed Events 7188 General Purpose Events (GPEs) 7189 Global Lock 7190 ACPI PM timer 7191 7192Updated the unix tarball directory structure to match the ACPICA git 7193source 7194tree. This ensures that the generic unix makefiles work properly (in 7195generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 7196867. 7197 7198Updated the return value of the _REV predefined method to integer value 5 7199to 7200reflect ACPI 5.0 support. 7201 7202Moved the external ACPI PM timer interface prototypes to the public 7203acpixf.h 7204file where they belong. 7205 7206Example Code and Data Size: These are the sizes for the OS-independent 7207acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7208debug 7209version of the code includes the debug output trace mechanism and has a 7210much 7211larger code and data size. 7212 7213 Previous Release: 7214 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 7215 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 7216 Current Release: 7217 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 7218 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 7219 7220 72212) iASL Compiler/Disassembler and Tools: 7222 7223Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 7224descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 7225incorrectly displayed. 7226 7227AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 7228specification. 7229 7230---------------------------------------- 723111 January 2012. Summary of changes for version 20120111: 7232 7233 72341) ACPICA Core Subsystem: 7235 7236Implemented a new mechanism to allow host device drivers to check for 7237address 7238range conflicts with ACPI Operation Regions. Both SystemMemory and 7239SystemIO 7240address spaces are supported. A new external interface, 7241AcpiCheckAddressRange, 7242allows drivers to check an address range against the ACPI namespace. See 7243the 7244ACPICA reference for additional details. Adds one new file, 7245utilities/utaddress.c. Lin Ming, Bob Moore. 7246 7247Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 7248Control 7249and 7250Status registers, update the ACPI 5.0 flags, and update internal data 7251structures to handle an FADT larger than 256 bytes. The size of the ACPI 72525.0 7253FADT is 268 bytes. 7254 7255Updated all ACPICA copyrights and signons to 2012. Added the 2012 7256copyright to 7257all module headers and signons, including the standard Linux header. This 7258affects virtually every file in the ACPICA core subsystem, iASL compiler, 7259and 7260all ACPICA utilities. 7261 7262Example Code and Data Size: These are the sizes for the OS-independent 7263acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7264debug 7265version of the code includes the debug output trace mechanism and has a 7266much 7267larger code and data size. 7268 7269 Previous Release: 7270 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 7271 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 7272 Current Release: 7273 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 7274 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 7275 7276 72772) iASL Compiler/Disassembler and Tools: 7278 7279Disassembler: fixed a problem with the automatic resource tag generation 7280support. Fixes a problem where the resource tags are inadvertently not 7281constructed if the table being disassembled contains external references 7282to 7283control methods. Moved the actual construction of the tags to after the 7284final 7285namespace is constructed (after 2nd parse is invoked due to external 7286control 7287method references.) ACPICA BZ 941. 7288 7289Table Compiler: Make all "generic" operators caseless. These are the 7290operators 7291like UINT8, String, etc. Making these caseless improves ease-of-use. 7292ACPICA BZ 7293934. 7294 7295---------------------------------------- 729623 November 2011. Summary of changes for version 20111123: 7297 72980) ACPI 5.0 Support: 7299 7300This release contains full support for the ACPI 5.0 specification, as 7301summarized below. 7302 7303Reduced Hardware Support: 7304------------------------- 7305 7306This support allows for ACPI systems without the usual ACPI hardware. 7307This 7308support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 7309will 7310not attempt to initialize or use any of the usual ACPI hardware. Note, 7311when 7312this flag is set, all of the following ACPI hardware is assumed to be not 7313present and is not initialized or accessed: 7314 7315 General Purpose Events (GPEs) 7316 Fixed Events (PM1a/PM1b and PM Control) 7317 Power Management Timer and Console Buttons (power/sleep) 7318 Real-time Clock Alarm 7319 Global Lock 7320 System Control Interrupt (SCI) 7321 The FACS is assumed to be non-existent 7322 7323ACPI Tables: 7324------------ 7325 7326All new tables and updates to existing tables are fully supported in the 7327ACPICA headers (for use by device drivers), the disassembler, and the 7328iASL 7329Data Table Compiler. ACPI 5.0 defines these new tables: 7330 7331 BGRT /* Boot Graphics Resource Table */ 7332 DRTM /* Dynamic Root of Trust for Measurement table */ 7333 FPDT /* Firmware Performance Data Table */ 7334 GTDT /* Generic Timer Description Table */ 7335 MPST /* Memory Power State Table */ 7336 PCCT /* Platform Communications Channel Table */ 7337 PMTT /* Platform Memory Topology Table */ 7338 RASF /* RAS Feature table */ 7339 7340Operation Regions/SpaceIDs: 7341--------------------------- 7342 7343All new operation regions are fully supported by the iASL compiler, the 7344disassembler, and the ACPICA runtime code (for dispatch to region 7345handlers.) 7346The new operation region Space IDs are: 7347 7348 GeneralPurposeIo 7349 GenericSerialBus 7350 7351Resource Descriptors: 7352--------------------- 7353 7354All new ASL resource descriptors are fully supported by the iASL 7355compiler, 7356the 7357ASL/AML disassembler, and the ACPICA runtime Resource Manager code 7358(including 7359all new predefined resource tags). New descriptors are: 7360 7361 FixedDma 7362 GpioIo 7363 GpioInt 7364 I2cSerialBus 7365 SpiSerialBus 7366 UartSerialBus 7367 7368ASL/AML Operators, New and Modified: 7369------------------------------------ 7370 7371One new operator is added, the Connection operator, which is used to 7372associate 7373a GeneralPurposeIo or GenericSerialBus resource descriptor with 7374individual 7375field objects within an operation region. Several new protocols are 7376associated 7377with the AccessAs operator. All are fully supported by the iASL compiler, 7378disassembler, and runtime ACPICA AML interpreter: 7379 7380 Connection // Declare Field Connection 7381attributes 7382 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 7383 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 7384Protocol 7385 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 7386 RawDataBuffer // Data type for Vendor Data 7387fields 7388 7389Predefined ASL/AML Objects: 7390--------------------------- 7391 7392All new predefined objects/control-methods are supported by the iASL 7393compiler 7394and the ACPICA runtime validation/repair (arguments and return values.) 7395New 7396predefined names include the following: 7397 7398Standard Predefined Names (Objects or Control Methods): 7399 _AEI, _CLS, _CPC, _CWS, _DEP, 7400 _DLM, _EVT, _GCP, _CRT, _GWS, 7401 _HRV, _PRE, _PSE, _SRT, _SUB. 7402 7403Resource Tags (Names used to access individual fields within resource 7404descriptors): 7405 _DBT, _DPL, _DRS, _END, _FLC, 7406 _IOR, _LIN, _MOD, _PAR, _PHA, 7407 _PIN, _PPI, _POL, _RXL, _SLV, 7408 _SPE, _STB, _TXL, _VEN. 7409 7410ACPICA External Interfaces: 7411--------------------------- 7412 7413Several new interfaces have been defined for use by ACPI-related device 7414drivers and other host OS services: 7415 7416AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 7417to 7418acquire and release AML mutexes that are defined in the DSDT/SSDT tables 7419provided by the BIOS. They are intended to be used in conjunction with 7420the 7421ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 7422mutual exclusion with the AML code/interpreter. 7423 7424AcpiGetEventResources: Returns the (formatted) resource descriptors as 7425defined 7426by the ACPI 5.0 _AEI object (ACPI Event Information). This object 7427provides 7428resource descriptors associated with hardware-reduced platform events, 7429similar 7430to the AcpiGetCurrentResources interface. 7431 7432Operation Region Handlers: For General Purpose IO and Generic Serial Bus 7433operation regions, information about the Connection() object and any 7434optional 7435length information is passed to the region handler within the Context 7436parameter. 7437 7438AcpiBufferToResource: This interface converts a raw AML buffer containing 7439a 7440resource template or resource descriptor to the ACPI_RESOURCE internal 7441format 7442suitable for use by device drivers. Can be used by an operation region 7443handler 7444to convert the Connection() buffer object into a ACPI_RESOURCE. 7445 7446Miscellaneous/Tools/TestSuites: 7447------------------------------- 7448 7449Support for extended _HID names (Four alpha characters instead of three). 7450Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 7451Support for ACPI 5.0 features in the ASLTS test suite. 7452Fully updated documentation (ACPICA and iASL reference documents.) 7453 7454ACPI Table Definition Language: 7455------------------------------- 7456 7457Support for this language was implemented and released as a subsystem of 7458the 7459iASL compiler in 2010. (See the iASL compiler User Guide.) 7460 7461 7462Non-ACPI 5.0 changes for this release: 7463-------------------------------------- 7464 74651) ACPICA Core Subsystem: 7466 7467Fix a problem with operation region declarations where a failure can 7468occur 7469if 7470the region name and an argument that evaluates to an object (such as the 7471region address) are in different namespace scopes. Lin Ming, ACPICA BZ 7472937. 7473 7474Do not abort an ACPI table load if an invalid space ID is found within. 7475This 7476will be caught later if the offending method is executed. ACPICA BZ 925. 7477 7478Fixed an issue with the FFixedHW space ID where the ID was not always 7479recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 7480 7481Fixed a problem with the 32-bit generation of the unix-specific OSL 7482(osunixxf.c). Lin Ming, ACPICA BZ 936. 7483 7484Several changes made to enable generation with the GCC 4.6 compiler. 7485ACPICA BZ 7486935. 7487 7488New error messages: Unsupported I/O requests (not 8/16/32 bit), and 7489Index/Bank 7490field registers out-of-range. 7491 74922) iASL Compiler/Disassembler and Tools: 7493 7494iASL: Implemented the __PATH__ operator, which returns the full pathname 7495of 7496the current source file. 7497 7498AcpiHelp: Automatically display expanded keyword information for all ASL 7499operators. 7500 7501Debugger: Add "Template" command to disassemble/dump resource template 7502buffers. 7503 7504Added a new master script to generate and execute the ASLTS test suite. 7505Automatically handles 32- and 64-bit generation. See tests/aslts.sh 7506 7507iASL: Fix problem with listing generation during processing of the 7508Switch() 7509operator where AML listing was disabled until the entire Switch block was 7510completed. 7511 7512iASL: Improve support for semicolon statement terminators. Fix "invalid 7513character" message for some cases when the semicolon is used. Semicolons 7514are 7515now allowed after every <Term> grammar element. ACPICA BZ 927. 7516 7517iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 7518923. 7519 7520Disassembler: Fix problem with disassembly of the DataTableRegion 7521operator 7522where an inadvertent "Unhandled deferred opcode" message could be 7523generated. 7524 75253) Example Code and Data Size 7526 7527These are the sizes for the OS-independent acpica.lib produced by the 7528Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7529includes the debug output trace mechanism and has a much larger code and 7530data 7531size. 7532 7533 Previous Release: 7534 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7535 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7536 Current Release: 7537 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 7538 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 7539 7540---------------------------------------- 754122 September 2011. Summary of changes for version 20110922: 7542 75430) ACPI 5.0 News: 7544 7545Support for ACPI 5.0 in ACPICA has been underway for several months and 7546will 7547be released at the same time that ACPI 5.0 is officially released. 7548 7549The ACPI 5.0 specification is on track for release in the next few 7550months. 7551 75521) ACPICA Core Subsystem: 7553 7554Fixed a problem where the maximum sleep time for the Sleep() operator was 7555intended to be limited to two seconds, but was inadvertently limited to 755620 7557seconds instead. 7558 7559Linux and Unix makefiles: Added header file dependencies to ensure 7560correct 7561generation of ACPICA core code and utilities. Also simplified the 7562makefiles 7563considerably through the use of the vpath variable to specify search 7564paths. 7565ACPICA BZ 924. 7566 75672) iASL Compiler/Disassembler and Tools: 7568 7569iASL: Implemented support to check the access length for all fields 7570created to 7571access named Resource Descriptor fields. For example, if a resource field 7572is 7573defined to be two bits, a warning is issued if a CreateXxxxField() is 7574used 7575with an incorrect bit length. This is implemented for all current 7576resource 7577descriptor names. ACPICA BZ 930. 7578 7579Disassembler: Fixed a byte ordering problem with the output of 24-bit and 758056- 7581bit integers. 7582 7583iASL: Fixed a couple of issues associated with variable-length package 7584objects. 1) properly handle constants like One, Ones, Zero -- do not make 7585a 7586VAR_PACKAGE when these are used as a package length. 2) Allow the 7587VAR_PACKAGE 7588opcode (in addition to PACKAGE) when validating object types for 7589predefined 7590names. 7591 7592iASL: Emit statistics for all output files (instead of just the ASL input 7593and 7594AML output). Includes listings, hex files, etc. 7595 7596iASL: Added -G option to the table compiler to allow the compilation of 7597custom 7598ACPI tables. The only part of a table that is required is the standard 759936- 7600byte 7601ACPI header. 7602 7603AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 7604headers), 7605which also adds correct 64-bit support. Also, now all output filenames 7606are 7607completely lower case. 7608 7609AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 7610loading table files. A warning is issued for any such tables. The only 7611exception is an FADT. This also fixes a possible fault when attempting to 7612load 7613non-AML tables. ACPICA BZ 932. 7614 7615AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 7616a 7617missing table terminator could cause a fault when using the -p option. 7618 7619AcpiSrc: Fixed a possible divide-by-zero fault when generating file 7620statistics. 7621 76223) Example Code and Data Size 7623 7624These are the sizes for the OS-independent acpica.lib produced by the 7625Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7626includes the debug output trace mechanism and has a much larger code and 7627data 7628size. 7629 7630 Previous Release (VC 9.0): 7631 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7632 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7633 Current Release (VC 9.0): 7634 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7635 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7636 7637 7638---------------------------------------- 763923 June 2011. Summary of changes for version 20110623: 7640 76411) ACPI CA Core Subsystem: 7642 7643Updated the predefined name repair mechanism to not attempt repair of a 7644_TSS 7645return object if a _PSS object is present. We can only sort the _TSS 7646return 7647package if there is no _PSS within the same scope. This is because if 7648_PSS 7649is 7650present, the ACPI specification dictates that the _TSS Power Dissipation 7651field 7652is to be ignored, and therefore some BIOSs leave garbage values in the 7653_TSS 7654Power field(s). In this case, it is best to just return the _TSS package 7655as- 7656is. Reported by, and fixed with assistance from Fenghua Yu. 7657 7658Added an option to globally disable the control method return value 7659validation 7660and repair. This runtime option can be used to disable return value 7661repair 7662if 7663this is causing a problem on a particular machine. Also added an option 7664to 7665AcpiExec (-dr) to set this disable flag. 7666 7667All makefiles and project files: Major changes to improve generation of 7668ACPICA 7669tools. ACPICA BZ 912: 7670 Reduce default optimization levels to improve compatibility 7671 For Linux, add strict-aliasing=0 for gcc 4 7672 Cleanup and simplify use of command line defines 7673 Cleanup multithread library support 7674 Improve usage messages 7675 7676Linux-specific header: update handling of THREAD_ID and pthread. For the 767732- 7678bit case, improve casting to eliminate possible warnings, especially with 7679the 7680acpica tools. 7681 7682Example Code and Data Size: These are the sizes for the OS-independent 7683acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7684debug 7685version of the code includes the debug output trace mechanism and has a 7686much 7687larger code and data size. 7688 7689 Previous Release (VC 9.0): 7690 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7691 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7692 Current Release (VC 9.0): 7693 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7694 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7695 76962) iASL Compiler/Disassembler and Tools: 7697 7698With this release, a new utility named "acpihelp" has been added to the 7699ACPICA 7700package. This utility summarizes the ACPI specification chapters for the 7701ASL 7702and AML languages. It generates under Linux/Unix as well as Windows, and 7703provides the following functionality: 7704 Find/display ASL operator(s) -- with description and syntax. 7705 Find/display ASL keyword(s) -- with exact spelling and descriptions. 7706 Find/display ACPI predefined name(s) -- with description, number 7707 of arguments, and the return value data type. 7708 Find/display AML opcode name(s) -- with opcode, arguments, and 7709grammar. 7710 Decode/display AML opcode -- with opcode name, arguments, and 7711grammar. 7712 7713Service Layers: Make multi-thread support configurable. Conditionally 7714compile 7715the multi-thread support so that threading libraries will not be linked 7716if 7717not 7718necessary. The only tool that requires multi-thread support is AcpiExec. 7719 7720iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 7721of 7722Bison appear to want the interface to yyerror to be a const char * (or at 7723least this is a problem when generating iASL on some systems.) ACPICA BZ 7724923 7725Pierre Lejeune. 7726 7727Tools: Fix for systems where O_BINARY is not defined. Only used for 7728Windows 7729versions of the tools. 7730 7731---------------------------------------- 773227 May 2011. Summary of changes for version 20110527: 7733 77341) ACPI CA Core Subsystem: 7735 7736ASL Load() operator: Reinstate most restrictions on the incoming ACPI 7737table 7738signature. Now, only allow SSDT, OEMx, and a null signature. History: 7739 1) Originally, we checked the table signature for "SSDT" or "PSDT". 7740 (PSDT is now obsolete.) 7741 2) We added support for OEMx tables, signature "OEM" plus a fourth 7742 "don't care" character. 7743 3) Valid tables were encountered with a null signature, so we just 7744 gave up on validating the signature, (05/2008). 7745 4) We encountered non-AML tables such as the MADT, which caused 7746 interpreter errors and kernel faults. So now, we once again allow 7747 only SSDT, OEMx, and now, also a null signature. (05/2011). 7748 7749Added the missing _TDL predefined name to the global name list in order 7750to 7751enable validation. Affects both the core ACPICA code and the iASL 7752compiler. 7753 7754Example Code and Data Size: These are the sizes for the OS-independent 7755acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7756debug 7757version of the code includes the debug output trace mechanism and has a 7758much 7759larger code and data size. 7760 7761 Previous Release (VC 9.0): 7762 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7763 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7764 Current Release (VC 9.0): 7765 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7766 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7767 77682) iASL Compiler/Disassembler and Tools: 7769 7770Debugger/AcpiExec: Implemented support for "complex" method arguments on 7771the 7772debugger command line. This adds support beyond simple integers -- 7773including 7774Strings, Buffers, and Packages. Includes support for nested packages. 7775Increased the default command line buffer size to accommodate these 7776arguments. 7777See the ACPICA reference for details and syntax. ACPICA BZ 917. 7778 7779Debugger/AcpiExec: Implemented support for "default" method arguments for 7780the 7781Execute/Debug command. Now, the debugger will always invoke a control 7782method 7783with the required number of arguments -- even if the command line 7784specifies 7785none or insufficient arguments. It uses default integer values for any 7786missing 7787arguments. Also fixes a bug where only six method arguments maximum were 7788supported instead of the required seven. 7789 7790Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 7791and 7792also return status in order to prevent buffer overruns. See the ACPICA 7793reference for details and syntax. ACPICA BZ 921 7794 7795iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 7796makefiles to simplify support for the two different but similar parser 7797generators, bison and yacc. 7798 7799Updated the generic unix makefile for gcc 4. The default gcc version is 7800now 7801expected to be 4 or greater, since options specific to gcc 4 are used. 7802 7803---------------------------------------- 780413 April 2011. Summary of changes for version 20110413: 7805 78061) ACPI CA Core Subsystem: 7807 7808Implemented support to execute a so-called "orphan" _REG method under the 7809EC 7810device. This change will force the execution of a _REG method underneath 7811the 7812EC 7813device even if there is no corresponding operation region of type 7814EmbeddedControl. Fixes a problem seen on some machines and apparently is 7815compatible with Windows behavior. ACPICA BZ 875. 7816 7817Added more predefined methods that are eligible for automatic NULL 7818package 7819element removal. This change adds another group of predefined names to 7820the 7821list 7822of names that can be repaired by having NULL package elements dynamically 7823removed. This group are those methods that return a single variable- 7824length 7825package containing simple data types such as integers, buffers, strings. 7826This 7827includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 7828_PSL, 7829_Sx, 7830and _TZD. ACPICA BZ 914. 7831 7832Split and segregated all internal global lock functions to a new file, 7833evglock.c. 7834 7835Updated internal address SpaceID for DataTable regions. Moved this 7836internal 7837space 7838id in preparation for ACPI 5.0 changes that will include some new space 7839IDs. 7840This 7841change should not affect user/host code. 7842 7843Example Code and Data Size: These are the sizes for the OS-independent 7844acpica.lib 7845produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7846version of 7847the code includes the debug output trace mechanism and has a much larger 7848code 7849and 7850data size. 7851 7852 Previous Release (VC 9.0): 7853 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7854 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7855 Current Release (VC 9.0): 7856 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7857 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7858 78592) iASL Compiler/Disassembler and Tools: 7860 7861iASL/DTC: Major update for new grammar features. Allow generic data types 7862in 7863custom ACPI tables. Field names are now optional. Any line can be split 7864to 7865multiple lines using the continuation char (\). Large buffers now use 7866line- 7867continuation character(s) and no colon on the continuation lines. See the 7868grammar 7869update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 7870Moore. 7871 7872iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 7873statements. 7874Since the parser stuffs a "zero" as the return value for these statements 7875(due 7876to 7877the underlying AML grammar), they were seen as "return with value" by the 7878iASL 7879semantic checking. They are now seen correctly as "null" return 7880statements. 7881 7882iASL: Check if a_REG declaration has a corresponding Operation Region. 7883Adds a 7884check for each _REG to ensure that there is in fact a corresponding 7885operation 7886region declaration in the same scope. If not, the _REG method is not very 7887useful 7888since it probably won't be executed. ACPICA BZ 915. 7889 7890iASL/DTC: Finish support for expression evaluation. Added a new 7891expression 7892parser 7893that implements c-style operator precedence and parenthesization. ACPICA 7894bugzilla 7895908. 7896 7897Disassembler/DTC: Remove support for () and <> style comments in data 7898tables. 7899Now 7900that DTC has full expression support, we don't want to have comment 7901strings 7902that 7903start with a parentheses or a less-than symbol. Now, only the standard /* 7904and 7905// 7906comments are supported, as well as the bracket [] comments. 7907 7908AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 7909"unusual" 7910headers in the acpidump file. Update the header validation to support 7911these 7912tables. Problem introduced in previous AcpiXtract version in the change 7913to 7914support "wrong checksum" error messages emitted by acpidump utility. 7915 7916iASL: Add a * option to generate all template files (as a synonym for 7917ALL) 7918as 7919in 7920"iasl -T *" or "iasl -T ALL". 7921 7922iASL/DTC: Do not abort compiler on fatal errors. We do not want to 7923completely 7924abort the compiler on "fatal" errors, simply should abort the current 7925compile. 7926This allows multiple compiles with a single (possibly wildcard) compiler 7927invocation. 7928 7929---------------------------------------- 793016 March 2011. Summary of changes for version 20110316: 7931 79321) ACPI CA Core Subsystem: 7933 7934Fixed a problem caused by a _PRW method appearing at the namespace root 7935scope 7936during the setup of wake GPEs. A fault could occur if a _PRW directly 7937under 7938the 7939root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 7940 7941Implemented support for "spurious" Global Lock interrupts. On some 7942systems, a 7943global lock interrupt can occur without the pending flag being set. Upon 7944a 7945GL 7946interrupt, we now ensure that a thread is actually waiting for the lock 7947before 7948signaling GL availability. Rafael Wysocki, Bob Moore. 7949 7950Example Code and Data Size: These are the sizes for the OS-independent 7951acpica.lib 7952produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7953version of 7954the code includes the debug output trace mechanism and has a much larger 7955code 7956and 7957data size. 7958 7959 Previous Release (VC 9.0): 7960 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7961 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7962 Current Release (VC 9.0): 7963 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7964 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7965 79662) iASL Compiler/Disassembler and Tools: 7967 7968Implemented full support for the "SLIC" ACPI table. Includes support in 7969the 7970header files, disassembler, table compiler, and template generator. Bob 7971Moore, 7972Lin Ming. 7973 7974AcpiXtract: Correctly handle embedded comments and messages from 7975AcpiDump. 7976Apparently some or all versions of acpidump will occasionally emit a 7977comment 7978like 7979"Wrong checksum", etc., into the dump file. This was causing problems for 7980AcpiXtract. ACPICA BZ 905. 7981 7982iASL: Fix the Linux makefile by removing an inadvertent double file 7983inclusion. 7984ACPICA BZ 913. 7985 7986AcpiExec: Update installation of operation region handlers. Install one 7987handler 7988for a user-defined address space. This is used by the ASL test suite 7989(ASLTS). 7990 7991---------------------------------------- 799211 February 2011. Summary of changes for version 20110211: 7993 79941) ACPI CA Core Subsystem: 7995 7996Added a mechanism to defer _REG methods for some early-installed 7997handlers. 7998Most user handlers should be installed before call to 7999AcpiEnableSubsystem. 8000However, Event handlers and region handlers should be installed after 8001AcpiInitializeObjects. Override handlers for the "default" regions should 8002be 8003installed early, however. This change executes all _REG methods for the 8004default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 8005chicken/egg issues between them. ACPICA BZ 848. 8006 8007Implemented an optimization for GPE detection. This optimization will 8008simply 8009ignore GPE registers that contain no enabled GPEs -- there is no need to 8010read the register since this information is available internally. This 8011becomes more important on machines with a large GPE space. ACPICA 8012bugzilla 8013884. Lin Ming. Suggestion from Joe Liu. 8014 8015Removed all use of the highly unreliable FADT revision field. The 8016revision 8017number in the FADT has been found to be completely unreliable and cannot 8018be 8019trusted. Only the actual table length can be used to infer the version. 8020This 8021change updates the ACPICA core and the disassembler so that both no 8022longer 8023even look at the FADT version and instead depend solely upon the FADT 8024length. 8025 8026Fix an unresolved name issue for the no-debug and no-error-message source 8027generation cases. The _AcpiModuleName was left undefined in these cases, 8028but 8029it is actually needed as a parameter to some interfaces. Define 8030_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 8031 8032Split several large files (makefiles and project files updated) 8033 utglobal.c -> utdecode.c 8034 dbcomds.c -> dbmethod.c dbnames.c 8035 dsopcode.c -> dsargs.c dscontrol.c 8036 dsload.c -> dsload2.c 8037 aslanalyze.c -> aslbtypes.c aslwalks.c 8038 8039Example Code and Data Size: These are the sizes for the OS-independent 8040acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 8041debug version of the code includes the debug output trace mechanism and 8042has 8043a much larger code and data size. 8044 8045 Previous Release (VC 9.0): 8046 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 8047 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 8048 Current Release (VC 9.0): 8049 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 8050 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 8051 80522) iASL Compiler/Disassembler and Tools: 8053 8054iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 8055These are useful C-style macros with the standard definitions. ACPICA 8056bugzilla 898. 8057 8058iASL/DTC: Added support for integer expressions and labels. Support for 8059full 8060expressions for all integer fields in all ACPI tables. Support for labels 8061in 8062"generic" portions of tables such as UEFI. See the iASL reference manual. 8063 8064Debugger: Added a command to display the status of global handlers. The 8065"handlers" command will display op region, fixed event, and miscellaneous 8066global handlers. installation status -- and for op regions, whether 8067default 8068or user-installed handler will be used. 8069 8070iASL: Warn if reserved method incorrectly returns a value. Many 8071predefined 8072names are defined such that they do not return a value. If implemented as 8073a 8074method, issue a warning if such a name explicitly returns a value. ACPICA 8075Bugzilla 855. 8076 8077iASL: Added detection of GPE method name conflicts. Detects a conflict 8078where 8079there are two GPE methods of the form _Lxy and _Exy in the same scope. 8080(For 8081example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 8082 8083iASL/DTC: Fixed a couple input scanner issues with comments and line 8084numbers. Comment remover could get confused and miss a comment ending. 8085Fixed 8086a problem with line counter maintenance. 8087 8088iASL/DTC: Reduced the severity of some errors from fatal to error. There 8089is 8090no need to abort on simple errors within a field definition. 8091 8092Debugger: Simplified the output of the help command. All help output now 8093in 8094a single screen, instead of help subcommands. ACPICA Bugzilla 897. 8095 8096---------------------------------------- 809712 January 2011. Summary of changes for version 20110112: 8098 80991) ACPI CA Core Subsystem: 8100 8101Fixed a race condition between method execution and namespace walks that 8102can 8103possibly cause a fault. The problem was apparently introduced in version 810420100528 as a result of a performance optimization that reduces the 8105number 8106of 8107namespace walks upon method exit by using the delete_namespace_subtree 8108function instead of the delete_namespace_by_owner function used 8109previously. 8110Bug is a missing namespace lock in the delete_namespace_subtree function. 8111dana.myers@oracle.com 8112 8113Fixed several issues and a possible fault with the automatic "serialized" 8114method support. History: This support changes a method to "serialized" on 8115the 8116fly if the method generates an AE_ALREADY_EXISTS error, indicating the 8117possibility that it cannot handle reentrancy. This fix repairs a couple 8118of 8119issues seen in the field, especially on machines with many cores: 8120 8121 1) Delete method children only upon the exit of the last thread, 8122 so as to not delete objects out from under other running threads 8123 (and possibly causing a fault.) 8124 2) Set the "serialized" bit for the method only upon the exit of the 8125 Last thread, so as to not cause deadlock when running threads 8126 attempt to exit. 8127 3) Cleanup the use of the AML "MethodFlags" and internal method flags 8128 so that there is no longer any confusion between the two. 8129 8130 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 8131 8132Debugger: Now lock the namespace for duration of a namespace dump. 8133Prevents 8134issues if the namespace is changing dynamically underneath the debugger. 8135Especially affects temporary namespace nodes, since the debugger displays 8136these also. 8137 8138Updated the ordering of include files. The ACPICA headers should appear 8139before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 8140set 8141any necessary compiler-specific defines, etc. Affects the ACPI-related 8142tools 8143and utilities. 8144 8145Updated all ACPICA copyrights and signons to 2011. Added the 2011 8146copyright 8147to all module headers and signons, including the Linux header. This 8148affects 8149virtually every file in the ACPICA core subsystem, iASL compiler, and all 8150utilities. 8151 8152Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 8153project files for VC++ 6.0 are now obsolete. New project files can be 8154found 8155under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 8156details. 8157 8158Example Code and Data Size: These are the sizes for the OS-independent 8159acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 8160debug version of the code includes the debug output trace mechanism and 8161has a 8162much larger code and data size. 8163 8164 Previous Release (VC 6.0): 8165 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 8166 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 8167 Current Release (VC 9.0): 8168 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 8169 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 8170 81712) iASL Compiler/Disassembler and Tools: 8172 8173iASL: Added generic data types to the Data Table compiler. Add "generic" 8174data 8175types such as UINT32, String, Unicode, etc., to simplify the generation 8176of 8177platform-defined tables such as UEFI. Lin Ming. 8178 8179iASL: Added listing support for the Data Table Compiler. Adds listing 8180support 8181(-l) to display actual binary output for each line of input code. 8182 8183---------------------------------------- 818409 December 2010. Summary of changes for version 20101209: 8185 81861) ACPI CA Core Subsystem: 8187 8188Completed the major overhaul of the GPE support code that was begun in 8189July 81902010. Major features include: removal of _PRW execution in ACPICA (host 8191executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 8192changes to existing interfaces, simplification of GPE handler operation, 8193and 8194a handful of new interfaces: 8195 8196 AcpiUpdateAllGpes 8197 AcpiFinishGpe 8198 AcpiSetupGpeForWake 8199 AcpiSetGpeWakeMask 8200 One new file, evxfgpe.c to consolidate all external GPE interfaces. 8201 8202See the ACPICA Programmer Reference for full details and programming 8203information. See the new section 4.4 "General Purpose Event (GPE) 8204Support" 8205for a full overview, and section 8.7 "ACPI General Purpose Event 8206Management" 8207for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 8208Ming, 8209Bob Moore, Rafael Wysocki. 8210 8211Implemented a new GPE feature for Windows compatibility, the "Implicit 8212Wake 8213GPE Notify". This feature will automatically issue a Notify(2) on a 8214device 8215when a Wake GPE is received if there is no corresponding GPE method or 8216handler. ACPICA BZ 870. 8217 8218Fixed a problem with the Scope() operator during table parse and load 8219phase. 8220During load phase (table load or method execution), the scope operator 8221should 8222not enter the target into the namespace. Instead, it should open a new 8223scope 8224at the target location. Linux BZ 19462, ACPICA BZ 882. 8225 8226Example Code and Data Size: These are the sizes for the OS-independent 8227acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8228debug version of the code includes the debug output trace mechanism and 8229has a 8230much larger code and data size. 8231 8232 Previous Release: 8233 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 8234 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 8235 Current Release: 8236 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8237 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8238 82392) iASL Compiler/Disassembler and Tools: 8240 8241iASL: Relax the alphanumeric restriction on _CID strings. These strings 8242are 8243"bus-specific" per the ACPI specification, and therefore any characters 8244are 8245acceptable. The only checks that can be performed are for a null string 8246and 8247perhaps for a leading asterisk. ACPICA BZ 886. 8248 8249iASL: Fixed a problem where a syntax error that caused a premature EOF 8250condition on the source file emitted a very confusing error message. The 8251premature EOF is now detected correctly. ACPICA BZ 891. 8252 8253Disassembler: Decode the AccessSize within a Generic Address Structure 8254(byte 8255access, word access, etc.) Note, this field does not allow arbitrary bit 8256access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 8257 8258New: AcpiNames utility - Example namespace dump utility. Shows an example 8259of 8260ACPICA configuration for a minimal namespace dump utility. Uses table and 8261namespace managers, but no AML interpreter. Does not add any 8262functionality 8263over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 8264partition and configure ACPICA. ACPICA BZ 883. 8265 8266AML Debugger: Increased the debugger buffer size for method return 8267objects. 8268Was 4K, increased to 16K. Also enhanced error messages for debugger 8269method 8270execution, including the buffer overflow case. 8271 8272---------------------------------------- 827313 October 2010. Summary of changes for version 20101013: 8274 82751) ACPI CA Core Subsystem: 8276 8277Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 8278now 8279clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 8280HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 8281 8282Changed the type of the predefined namespace object _TZ from ThermalZone 8283to 8284Device. This was found to be confusing to the host software that 8285processes 8286the various thermal zones, since _TZ is not really a ThermalZone. 8287However, 8288a 8289Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 8290Zhang. 8291 8292Added Windows Vista SP2 to the list of supported _OSI strings. The actual 8293string is "Windows 2006 SP2". 8294 8295Eliminated duplicate code in AcpiUtExecute* functions. Now that the 8296nsrepair 8297code automatically repairs _HID-related strings, this type of code is no 8298longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 8299878. 8300 8301Example Code and Data Size: These are the sizes for the OS-independent 8302acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8303debug version of the code includes the debug output trace mechanism and 8304has a 8305much larger code and data size. 8306 8307 Previous Release: 8308 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8309 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8310 Current Release: 8311 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8312 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8313 83142) iASL Compiler/Disassembler and Tools: 8315 8316iASL: Implemented additional compile-time validation for _HID strings. 8317The 8318non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 8319length 8320of 8321the string must be exactly seven or eight characters. For both _HID and 8322_CID 8323strings, all characters must be alphanumeric. ACPICA BZ 874. 8324 8325iASL: Allow certain "null" resource descriptors. Some BIOS code creates 8326descriptors that are mostly or all zeros, with the expectation that they 8327will 8328be filled in at runtime. iASL now allows this as long as there is a 8329"resource 8330tag" (name) associated with the descriptor, which gives the ASL a handle 8331needed to modify the descriptor. ACPICA BZ 873. 8332 8333Added single-thread support to the generic Unix application OSL. 8334Primarily 8335for iASL support, this change removes the use of semaphores in the 8336single- 8337threaded ACPICA tools/applications - increasing performance. The 8338_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 8339option. ACPICA BZ 879. 8340 8341AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 8342support 8343for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 8344 8345iASL: Moved all compiler messages to a new file, aslmessages.h. 8346 8347---------------------------------------- 834815 September 2010. Summary of changes for version 20100915: 8349 83501) ACPI CA Core Subsystem: 8351 8352Removed the AcpiOsDerivePciId OSL interface. The various host 8353implementations 8354of this function were not OS-dependent and are now obsolete and can be 8355removed from all host OSLs. This function has been replaced by 8356AcpiHwDerivePciId, which is now part of the ACPICA core code. 8357AcpiHwDerivePciId has been implemented without recursion. Adds one new 8358module, hwpci.c. ACPICA BZ 857. 8359 8360Implemented a dynamic repair for _HID and _CID strings. The following 8361problems are now repaired at runtime: 1) Remove a leading asterisk in the 8362string, and 2) the entire string is uppercased. Both repairs are in 8363accordance with the ACPI specification and will simplify host driver 8364code. 8365ACPICA BZ 871. 8366 8367The ACPI_THREAD_ID type is no longer configurable, internally it is now 8368always UINT64. This simplifies the ACPICA code, especially any printf 8369output. 8370UINT64 is the only common data type for all thread_id types across all 8371operating systems. It is now up to the host OSL to cast the native 8372thread_id 8373type to UINT64 before returning the value to ACPICA (via 8374AcpiOsGetThreadId). 8375Lin Ming, Bob Moore. 8376 8377Added the ACPI_INLINE type to enhance the ACPICA configuration. The 8378"inline" 8379keyword is not standard across compilers, and this type allows inline to 8380be 8381configured on a per-compiler basis. Lin Ming. 8382 8383Made the system global AcpiGbl_SystemAwakeAndRunning publicly 8384available. 8385Added an extern for this boolean in acpixf.h. Some hosts utilize this 8386value 8387during suspend/restore operations. ACPICA BZ 869. 8388 8389All code that implements error/warning messages with the "ACPI:" prefix 8390has 8391been moved to a new module, utxferror.c. 8392 8393The UINT64_OVERLAY was moved to utmath.c, which is the only module where 8394it 8395is used. ACPICA BZ 829. Lin Ming, Bob Moore. 8396 8397Example Code and Data Size: These are the sizes for the OS-independent 8398acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8399debug version of the code includes the debug output trace mechanism and 8400has a 8401much larger code and data size. 8402 8403 Previous Release: 8404 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 8405 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 8406 Current Release: 8407 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8408 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8409 84102) iASL Compiler/Disassembler and Tools: 8411 8412iASL/Disassembler: Write ACPI errors to stderr instead of the output 8413file. 8414This keeps the output files free of random error messages that may 8415originate 8416from within the namespace/interpreter code. Used this opportunity to 8417merge 8418all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 8419866. Lin Ming, Bob Moore. 8420 8421Tools: update some printfs for ansi warnings on size_t. Handle width 8422change 8423of size_t on 32-bit versus 64-bit generations. Lin Ming. 8424 8425---------------------------------------- 842606 August 2010. Summary of changes for version 20100806: 8427 84281) ACPI CA Core Subsystem: 8429 8430Designed and implemented a new host interface to the _OSI support code. 8431This 8432will allow the host to dynamically add or remove multiple _OSI strings, 8433as 8434well as install an optional handler that is called for each _OSI 8435invocation. 8436Also added a new AML debugger command, 'osi' to display and modify the 8437global 8438_OSI string table, and test support in the AcpiExec utility. See the 8439ACPICA 8440reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 8441New Functions: 8442 AcpiInstallInterface - Add an _OSI string. 8443 AcpiRemoveInterface - Delete an _OSI string. 8444 AcpiInstallInterfaceHandler - Install optional _OSI handler. 8445Obsolete Functions: 8446 AcpiOsValidateInterface - no longer used. 8447New Files: 8448 source/components/utilities/utosi.c 8449 8450Re-introduced the support to enable multi-byte transfers for Embedded 8451Controller (EC) operation regions. A reported problem was found to be a 8452bug 8453in the host OS, not in the multi-byte support. Previously, the maximum 8454data 8455size passed to the EC operation region handler was a single byte. There 8456are 8457often EC Fields larger than one byte that need to be transferred, and it 8458is 8459useful for the EC driver to lock these as a single transaction. This 8460change 8461enables single transfers larger than 8 bits. This effectively changes the 8462access to the EC space from ByteAcc to AnyAcc, and will probably require 8463changes to the host OS Embedded Controller driver to enable 16/32/64/256- 8464bit 8465transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 8466 8467Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 8468prototype in acpiosxf.h had the output value pointer as a (void *). 8469It should be a (UINT64 *). This may affect some host OSL code. 8470 8471Fixed a couple problems with the recently modified Linux makefiles for 8472iASL 8473and AcpiExec. These new makefiles place the generated object files in the 8474local directory so that there can be no collisions between the files that 8475are 8476shared between them that are compiled with different options. 8477 8478Example Code and Data Size: These are the sizes for the OS-independent 8479acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8480debug version of the code includes the debug output trace mechanism and 8481has a 8482much larger code and data size. 8483 8484 Previous Release: 8485 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8486 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 8487 Current Release: 8488 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 8489 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 8490 84912) iASL Compiler/Disassembler and Tools: 8492 8493iASL/Disassembler: Added a new option (-da, "disassemble all") to load 8494the 8495namespace from and disassemble an entire group of AML files. Useful for 8496loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 8497and 8498disassembling with one simple command. ACPICA BZ 865. Lin Ming. 8499 8500iASL: Allow multiple invocations of -e option. This change allows 8501multiple 8502uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 8503834. 8504Lin Ming. 8505 8506---------------------------------------- 850702 July 2010. Summary of changes for version 20100702: 8508 85091) ACPI CA Core Subsystem: 8510 8511Implemented several updates to the recently added GPE reference count 8512support. The model for "wake" GPEs is changing to give the host OS 8513complete 8514control of these GPEs. Eventually, the ACPICA core will not execute any 8515_PRW 8516methods, since the host already must execute them. Also, additional 8517changes 8518were made to help ensure that the reference counts are kept in proper 8519synchronization with reality. Rafael J. Wysocki. 8520 85211) Ensure that GPEs are not enabled twice during initialization. 85222) Ensure that GPE enable masks stay in sync with the reference count. 85233) Do not inadvertently enable GPEs when writing GPE registers. 85244) Remove the internal wake reference counter and add new AcpiGpeWakeup 8525interface. This interface will set or clear individual GPEs for wakeup. 85265) Remove GpeType argument from AcpiEnable and AcpiDisable. These 8527interfaces 8528are now used for "runtime" GPEs only. 8529 8530Changed the behavior of the GPE install/remove handler interfaces. The 8531GPE 8532is 8533no longer disabled during this process, as it was found to cause problems 8534on 8535some machines. Rafael J. Wysocki. 8536 8537Reverted a change introduced in version 20100528 to enable Embedded 8538Controller multi-byte transfers. This change was found to cause problems 8539with 8540Index Fields and possibly Bank Fields. It will be reintroduced when these 8541problems have been resolved. 8542 8543Fixed a problem with references to Alias objects within Package Objects. 8544A 8545reference to an Alias within the definition of a Package was not always 8546resolved properly. Aliases to objects like Processors, Thermal zones, 8547etc. 8548were resolved to the actual object instead of a reference to the object 8549as 8550it 8551should be. Package objects are only allowed to contain integer, string, 8552buffer, package, and reference objects. Redhat bugzilla 608648. 8553 8554Example Code and Data Size: These are the sizes for the OS-independent 8555acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8556debug version of the code includes the debug output trace mechanism and 8557has a 8558much larger code and data size. 8559 8560 Previous Release: 8561 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8562 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8563 Current Release: 8564 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8565 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 8566 85672) iASL Compiler/Disassembler and Tools: 8568 8569iASL: Implemented a new compiler subsystem to allow definition and 8570compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 8571These 8572are called "ACPI Data Tables", and the new compiler is the "Data Table 8573Compiler". This compiler is intended to simplify the existing error-prone 8574process of creating these tables for the BIOS, as well as allowing the 8575disassembly, modification, recompilation, and override of existing ACPI 8576data 8577tables. See the iASL User Guide for detailed information. 8578 8579iASL: Implemented a new Template Generator option in support of the new 8580Data 8581Table Compiler. This option will create examples of all known ACPI tables 8582that can be used as the basis for table development. See the iASL 8583documentation and the -T option. 8584 8585Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 8586Descriptor Table). 8587 8588Updated the Linux makefiles for iASL and AcpiExec to place the generated 8589object files in the local directory so that there can be no collisions 8590between the shared files between them that are generated with different 8591options. 8592 8593Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 8594Use 8595the #define __APPLE__ to enable this support. 8596 8597---------------------------------------- 859828 May 2010. Summary of changes for version 20100528: 8599 8600Note: The ACPI 4.0a specification was released on April 5, 2010 and is 8601available at www.acpi.info. This is primarily an errata release. 8602 86031) ACPI CA Core Subsystem: 8604 8605Undefined ACPI tables: We are looking for the definitions for the 8606following 8607ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 8608 8609Implemented support to enable multi-byte transfers for Embedded 8610Controller 8611(EC) operation regions. Previously, the maximum data size passed to the 8612EC 8613operation region handler was a single byte. There are often EC Fields 8614larger 8615than one byte that need to be transferred, and it is useful for the EC 8616driver 8617to lock these as a single transaction. This change enables single 8618transfers 8619larger than 8 bits. This effectively changes the access to the EC space 8620from 8621ByteAcc to AnyAcc, and will probably require changes to the host OS 8622Embedded 8623Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 8624bit 8625transfers. Alexey Starikovskiy, Lin Ming 8626 8627Implemented a performance enhancement for namespace search and access. 8628This 8629change enhances the performance of namespace searches and walks by adding 8630a 8631backpointer to the parent in each namespace node. On large namespaces, 8632this 8633change can improve overall ACPI performance by up to 9X. Adding a pointer 8634to 8635each namespace node increases the overall size of the internal namespace 8636by 8637about 5%, since each namespace entry usually consists of both a namespace 8638node and an ACPI operand object. However, this is the first growth of the 8639namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 8640 8641Implemented a performance optimization that reduces the number of 8642namespace 8643walks. On control method exit, only walk the namespace if the method is 8644known 8645to have created namespace objects outside of its local scope. Previously, 8646the 8647entire namespace was traversed on each control method exit. This change 8648can 8649improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 8650Moore. 8651 8652Added support to truncate I/O addresses to 16 bits for Windows 8653compatibility. 8654Some ASL code has been seen in the field that inadvertently has bits set 8655above bit 15. This feature is optional and is enabled if the BIOS 8656requests 8657any Windows OSI strings. It can also be enabled by the host OS. Matthew 8658Garrett, Bob Moore. 8659 8660Added support to limit the maximum time for the ASL Sleep() operator. To 8661prevent accidental deep sleeps, limit the maximum time that Sleep() will 8662actually sleep. Configurable, the default maximum is two seconds. ACPICA 8663bugzilla 854. 8664 8665Added run-time validation support for the _WDG and_WED Microsoft 8666predefined 8667methods. These objects are defined by "Windows Instrumentation", and are 8668not 8669part of the ACPI spec. ACPICA BZ 860. 8670 8671Expanded all statistic counters used during namespace and device 8672initialization from 16 to 32 bits in order to support very large 8673namespaces. 8674 8675Replaced all instances of %d in printf format specifiers with %u since 8676nearly 8677all integers in ACPICA are unsigned. 8678 8679Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 8680returned 8681as AE_NO_HANDLER. 8682 8683Example Code and Data Size: These are the sizes for the OS-independent 8684acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8685debug version of the code includes the debug output trace mechanism and 8686has a 8687much larger code and data size. 8688 8689 Previous Release: 8690 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8691 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8692 Current Release: 8693 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8694 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8695 86962) iASL Compiler/Disassembler and Tools: 8697 8698iASL: Added compiler support for the _WDG and_WED Microsoft predefined 8699methods. These objects are defined by "Windows Instrumentation", and are 8700not 8701part of the ACPI spec. ACPICA BZ 860. 8702 8703AcpiExec: added option to disable the memory tracking mechanism. The -dt 8704option will disable the tracking mechanism, which improves performance 8705considerably. 8706 8707AcpiExec: Restructured the command line options into -d (disable) and -e 8708(enable) options. 8709 8710---------------------------------------- 871128 April 2010. Summary of changes for version 20100428: 8712 87131) ACPI CA Core Subsystem: 8714 8715Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 8716including FADT-based and GPE Block Devices, execute any _PRW methods in 8717the 8718new table, and process any _Lxx/_Exx GPE methods in the new table. Any 8719runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 8720immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 8721Devices. Provides compatibility with other ACPI implementations. Two new 8722files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 8723Moore. 8724 8725Fixed a regression introduced in version 20100331 within the table 8726manager 8727where initial table loading could fail. This was introduced in the fix 8728for 8729AcpiReallocateRootTable. Also, renamed some of fields in the table 8730manager 8731data structures to clarify their meaning and use. 8732 8733Fixed a possible allocation overrun during internal object copy in 8734AcpiUtCopySimpleObject. The original code did not correctly handle the 8735case 8736where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 8737847. 8738 8739Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 8740possible access beyond end-of-allocation. Also, now fully validate 8741descriptor 8742(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 8743 8744Example Code and Data Size: These are the sizes for the OS-independent 8745acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8746debug version of the code includes the debug output trace mechanism and 8747has a 8748much larger code and data size. 8749 8750 Previous Release: 8751 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8752 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8753 Current Release: 8754 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8755 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8756 87572) iASL Compiler/Disassembler and Tools: 8758 8759iASL: Implemented Min/Max/Len/Gran validation for address resource 8760descriptors. This change implements validation for the address fields 8761that 8762are common to all address-type resource descriptors. These checks are 8763implemented: Checks for valid Min/Max, length within the Min/Max window, 8764valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 8765per 8766table 6-40 in the ACPI 4.0a specification. Also split the large 8767aslrestype1.c 8768and aslrestype2.c files into five new files. ACPICA BZ 840. 8769 8770iASL: Added support for the _Wxx predefined names. This support was 8771missing 8772and these names were not recognized by the compiler as valid predefined 8773names. ACPICA BZ 851. 8774 8775iASL: Added an error for all predefined names that are defined to return 8776no 8777value and thus must be implemented as Control Methods. These include all 8778of 8779the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 8780names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 8781 8782iASL: Implemented the -ts option to emit hex AML data in ASL format, as 8783an 8784ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 8785be 8786dynamically loaded via the Load() operator. Also cleaned up output for 8787the 8788- 8789ta and -tc options. ACPICA BZ 853. 8790 8791Tests: Added a new file with examples of extended iASL error checking. 8792Demonstrates the advanced error checking ability of the iASL compiler. 8793Available at tests/misc/badcode.asl. 8794 8795---------------------------------------- 879631 March 2010. Summary of changes for version 20100331: 8797 87981) ACPI CA Core Subsystem: 8799 8800Completed a major update for the GPE support in order to improve support 8801for 8802shared GPEs and to simplify both host OS and ACPICA code. Added a 8803reference 8804count mechanism to support shared GPEs that require multiple device 8805drivers. 8806Several external interfaces have changed. One external interface has been 8807removed. One new external interface was added. Most of the GPE external 8808interfaces now use the GPE spinlock instead of the events mutex (and the 8809Flags parameter for many GPE interfaces has been removed.) See the 8810updated 8811ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 8812Rafael 8813Wysocki. ACPICA BZ 831. 8814 8815Changed: 8816 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 8817Removed: 8818 AcpiSetGpeType 8819New: 8820 AcpiSetGpe 8821 8822Implemented write support for DataTable operation regions. These regions 8823are 8824defined via the DataTableRegion() operator. Previously, only read support 8825was 8826implemented. The ACPI specification allows DataTableRegions to be 8827read/write, 8828however. 8829 8830Implemented a new subsystem option to force a copy of the DSDT to local 8831memory. Optionally copy the entire DSDT to local memory (instead of 8832simply 8833mapping it.) There are some (albeit very rare) BIOSs that corrupt or 8834replace 8835the original DSDT, creating the need for this option. Default is FALSE, 8836do 8837not copy the DSDT. 8838 8839Implemented detection of a corrupted or replaced DSDT. This change adds 8840support to detect a DSDT that has been corrupted and/or replaced from 8841outside 8842the OS (by firmware). This is typically catastrophic for the system, but 8843has 8844been seen on some machines. Once this problem has been detected, the DSDT 8845copy option can be enabled via system configuration. Lin Ming, Bob Moore. 8846 8847Fixed two problems with AcpiReallocateRootTable during the root table 8848copy. 8849When copying the root table to the new allocation, the length used was 8850incorrect. The new size was used instead of the current table size, 8851meaning 8852too much data was copied. Also, the count of available slots for ACPI 8853tables 8854was not set correctly. Alexey Starikovskiy, Bob Moore. 8855 8856Example Code and Data Size: These are the sizes for the OS-independent 8857acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8858debug version of the code includes the debug output trace mechanism and 8859has a 8860much larger code and data size. 8861 8862 Previous Release: 8863 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8864 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8865 Current Release: 8866 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8867 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8868 88692) iASL Compiler/Disassembler and Tools: 8870 8871iASL: Implement limited typechecking for values returned from predefined 8872control methods. The type of any returned static (unnamed) object is now 8873validated. For example, Return(1). ACPICA BZ 786. 8874 8875iASL: Fixed a predefined name object verification regression. Fixes a 8876problem 8877introduced in version 20100304. An error is incorrectly generated if a 8878predefined name is declared as a static named object with a value defined 8879using the keywords "Zero", "One", or "Ones". Lin Ming. 8880 8881iASL: Added Windows 7 support for the -g option (get local ACPI tables) 8882by 8883reducing the requested registry access rights. ACPICA BZ 842. 8884 8885Disassembler: fixed a possible fault when generating External() 8886statements. 8887Introduced in commit ae7d6fd: Properly handle externals with parent- 8888prefix 8889(carat). Fixes a string length allocation calculation. Lin Ming. 8890 8891---------------------------------------- 889204 March 2010. Summary of changes for version 20100304: 8893 88941) ACPI CA Core Subsystem: 8895 8896Fixed a possible problem with the AML Mutex handling function 8897AcpiExReleaseMutex where the function could fault under the very rare 8898condition when the interpreter has blocked, the interpreter lock is 8899released, 8900the interpreter is then reentered via the same thread, and attempts to 8901acquire an AML mutex that was previously acquired. FreeBSD report 140979. 8902Lin 8903Ming. 8904 8905Implemented additional configuration support for the AML "Debug Object". 8906Output from the debug object can now be enabled via a global variable, 8907AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 8908debugging. 8909This debug output is now available in the release version of ACPICA 8910instead 8911of just the debug version. Also, the entire debug output module can now 8912be 8913configured out of the ACPICA build if desired. One new file added, 8914executer/exdebug.c. Lin Ming, Bob Moore. 8915 8916Added header support for the ACPI MCHI table (Management Controller Host 8917Interface Table). This table was added in ACPI 4.0, but the defining 8918document 8919has only recently become available. 8920 8921Standardized output of integer values for ACPICA warnings/errors. Always 8922use 89230x prefix for hex output, always use %u for unsigned integer decimal 8924output. 8925Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 8926400 8927invocations.) These invocations were converted from the original 8928ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 8929 8930Example Code and Data Size: These are the sizes for the OS-independent 8931acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8932debug version of the code includes the debug output trace mechanism and 8933has a 8934much larger code and data size. 8935 8936 Previous Release: 8937 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 8938 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8939 Current Release: 8940 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8941 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8942 89432) iASL Compiler/Disassembler and Tools: 8944 8945iASL: Implemented typechecking support for static (non-control method) 8946predefined named objects that are declared with the Name() operator. For 8947example, the type of this object is now validated to be of type Integer: 8948Name(_BBN, 1). This change migrates the compiler to using the core 8949predefined 8950name table instead of maintaining a local version. Added a new file, 8951aslpredef.c. ACPICA BZ 832. 8952 8953Disassembler: Added support for the ACPI 4.0 MCHI table. 8954 8955---------------------------------------- 895621 January 2010. Summary of changes for version 20100121: 8957 89581) ACPI CA Core Subsystem: 8959 8960Added the 2010 copyright to all module headers and signons. This affects 8961virtually every file in the ACPICA core subsystem, the iASL compiler, the 8962tools/utilities, and the test suites. 8963 8964Implemented a change to the AcpiGetDevices interface to eliminate 8965unnecessary 8966invocations of the _STA method. In the case where a specific _HID is 8967requested, do not run _STA until a _HID match is found. This eliminates 8968potentially dozens of _STA calls during a search for a particular 8969device/HID, 8970which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 8971 8972Implemented an additional repair for predefined method return values. 8973Attempt 8974to repair unexpected NULL elements within returned Package objects. 8975Create 8976an 8977Integer of value zero, a NULL String, or a zero-length Buffer as 8978appropriate. 8979ACPICA BZ 818. Lin Ming, Bob Moore. 8980 8981Removed the obsolete ACPI_INTEGER data type. This type was introduced as 8982the 8983code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 8984(with 898564-bit AML integers). It is now obsolete and this change removes it from 8986the 8987ACPICA code base, replaced by UINT64. The original typedef has been 8988retained 8989for now for compatibility with existing device driver code. ACPICA BZ 8990824. 8991 8992Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 8993in 8994the parse tree object. 8995 8996Added additional warning options for the gcc-4 generation. Updated the 8997source 8998accordingly. This includes some code restructuring to eliminate 8999unreachable 9000code, elimination of some gotos, elimination of unused return values, 9001some 9002additional casting, and removal of redundant declarations. 9003 9004Example Code and Data Size: These are the sizes for the OS-independent 9005acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9006debug version of the code includes the debug output trace mechanism and 9007has a 9008much larger code and data size. 9009 9010 Previous Release: 9011 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 9012 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 9013 Current Release: 9014 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 9015 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 9016 90172) iASL Compiler/Disassembler and Tools: 9018 9019No functional changes for this release. 9020 9021---------------------------------------- 902214 December 2009. Summary of changes for version 20091214: 9023 90241) ACPI CA Core Subsystem: 9025 9026Enhanced automatic data type conversions for predefined name repairs. 9027This 9028change expands the automatic repairs/conversions for predefined name 9029return 9030values to make Integers, Strings, and Buffers fully interchangeable. 9031Also, 9032a 9033Buffer can be converted to a Package of Integers if necessary. The 9034nsrepair.c 9035module was completely restructured. Lin Ming, Bob Moore. 9036 9037Implemented automatic removal of null package elements during predefined 9038name 9039repairs. This change will automatically remove embedded and trailing NULL 9040package elements from returned package objects that are defined to 9041contain 9042a 9043variable number of sub-packages. The driver is then presented with a 9044package 9045with no null elements to deal with. ACPICA BZ 819. 9046 9047Implemented a repair for the predefined _FDE and _GTM names. The expected 9048return value for both names is a Buffer of 5 DWORDs. This repair fixes 9049two 9050possible problems (both seen in the field), where a package of integers 9051is 9052returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 9053Kim. 9054 9055Implemented additional module-level code support. This change will 9056properly 9057execute module-level code that is not at the root of the namespace (under 9058a 9059Device object, etc.). Now executes the code within the current scope 9060instead 9061of the root. ACPICA BZ 762. Lin Ming. 9062 9063Fixed possible mutex acquisition errors when running _REG methods. Fixes 9064a 9065problem where mutex errors can occur when running a _REG method that is 9066in 9067the same scope as a method-defined operation region or an operation 9068region 9069under a module-level IF block. This type of code is rare, so the problem 9070has 9071not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 9072 9073Fixed a possible memory leak during module-level code execution. An 9074object 9075could be leaked for each block of executed module-level code if the 9076interpreter slack mode is enabled This change deletes any implicitly 9077returned 9078object from the module-level code block. Lin Ming. 9079 9080Removed messages for successful predefined repair(s). The repair 9081mechanism 9082was considered too wordy. Now, messages are only unconditionally emitted 9083if 9084the return object cannot be repaired. Existing messages for successful 9085repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 9086827. 9087 9088Example Code and Data Size: These are the sizes for the OS-independent 9089acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9090debug version of the code includes the debug output trace mechanism and 9091has a 9092much larger code and data size. 9093 9094 Previous Release: 9095 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 9096 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 9097 Current Release: 9098 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 9099 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 9100 91012) iASL Compiler/Disassembler and Tools: 9102 9103iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 9104files 9105were no longer automatically removed at the termination of the compile. 9106 9107acpiexec: Implemented the -f option to specify default region fill value. 9108This option specifies the value used to initialize buffers that simulate 9109operation regions. Default value is zero. Useful for debugging problems 9110that 9111depend on a specific initial value for a region or field. 9112 9113---------------------------------------- 911412 November 2009. Summary of changes for version 20091112: 9115 91161) ACPI CA Core Subsystem: 9117 9118Implemented a post-order callback to AcpiWalkNamespace. The existing 9119interface only has a pre-order callback. This change adds an additional 9120parameter for a post-order callback which will be more useful for bus 9121scans. 9122ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 9123 9124Modified the behavior of the operation region memory mapping cache for 9125SystemMemory. Ensure that the memory mappings created for operation 9126regions 9127do not cross 4K page boundaries. Crossing a page boundary while mapping 9128regions can cause kernel warnings on some hosts if the pages have 9129different 9130attributes. Such regions are probably BIOS bugs, and this is the 9131workaround. 9132Linux BZ 14445. Lin Ming. 9133 9134Implemented an automatic repair for predefined methods that must return 9135sorted lists. This change will repair (by sorting) packages returned by 9136_ALR, 9137_PSS, and _TSS. Drivers can now assume that the packages are correctly 9138sorted 9139and do not contain NULL package elements. Adds one new file, 9140namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 9141 9142Fixed a possible fault during predefined name validation if a return 9143Package 9144object contains NULL elements. Also adds a warning if a NULL element is 9145followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 9146may 9147include repair or removal of all such NULL elements where possible. 9148 9149Implemented additional module-level executable AML code support. This 9150change 9151will execute module-level code that is not at the root of the namespace 9152(under a Device object, etc.) at table load time. Module-level executable 9153AML 9154code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 9155 9156Implemented a new internal function to create Integer objects. This 9157function 9158simplifies miscellaneous object creation code. ACPICA BZ 823. 9159 9160Reduced the severity of predefined repair messages, Warning to Info. 9161Since 9162the object was successfully repaired, a warning is too severe. Reduced to 9163an 9164info message for now. These messages may eventually be changed to debug- 9165only. 9166ACPICA BZ 812. 9167 9168Example Code and Data Size: These are the sizes for the OS-independent 9169acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9170debug version of the code includes the debug output trace mechanism and 9171has a 9172much larger code and data size. 9173 9174 Previous Release: 9175 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 9176 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 9177 Current Release: 9178 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 9179 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 9180 91812) iASL Compiler/Disassembler and Tools: 9182 9183iASL: Implemented Switch() with While(1) so that Break works correctly. 9184This 9185change correctly implements the Switch operator with a surrounding 9186While(1) 9187so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 9188 9189iASL: Added a message if a package initializer list is shorter than 9190package 9191length. Adds a new remark for a Package() declaration if an initializer 9192list 9193exists, but is shorter than the declared length of the package. Although 9194technically legal, this is probably a coding error and it is seen in the 9195field. ACPICA BZ 815. Lin Ming, Bob Moore. 9196 9197iASL: Fixed a problem where the compiler could fault after the maximum 9198number 9199of errors was reached (200). 9200 9201acpixtract: Fixed a possible warning for pointer cast if the compiler 9202warning 9203level set very high. 9204 9205---------------------------------------- 920613 October 2009. Summary of changes for version 20091013: 9207 92081) ACPI CA Core Subsystem: 9209 9210Fixed a problem where an Operation Region _REG method could be executed 9211more 9212than once. If a custom address space handler is installed by the host 9213before 9214the "initialize operation regions" phase of the ACPICA initialization, 9215any 9216_REG methods for that address space could be executed twice. This change 9217fixes the problem. ACPICA BZ 427. Lin Ming. 9218 9219Fixed a possible memory leak for the Scope() ASL operator. When the exact 9220invocation of "Scope(\)" is executed (change scope to root), one internal 9221operand object was leaked. Lin Ming. 9222 9223Implemented a run-time repair for the _MAT predefined method. If the _MAT 9224return value is defined as a Field object in the AML, and the field 9225size is less than or equal to the default width of an integer (32 or 922664),_MAT 9227can incorrectly return an Integer instead of a Buffer. ACPICA now 9228automatically repairs this problem. ACPICA BZ 810. 9229 9230Implemented a run-time repair for the _BIF and _BIX predefined methods. 9231The 9232"OEM Information" field is often incorrectly returned as an Integer with 9233value zero if the field is not supported by the platform. This is due to 9234an 9235ambiguity in the ACPI specification. The field should always be a string. 9236ACPICA now automatically repairs this problem by returning a NULL string 9237within the returned Package. ACPICA BZ 807. 9238 9239Example Code and Data Size: These are the sizes for the OS-independent 9240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9241debug version of the code includes the debug output trace mechanism and 9242has a 9243much larger code and data size. 9244 9245 Previous Release: 9246 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 9247 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 9248 Current Release: 9249 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 9250 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 9251 92522) iASL Compiler/Disassembler and Tools: 9253 9254Disassembler: Fixed a problem where references to external symbols that 9255contained one or more parent-prefixes (carats) were not handled 9256correctly, 9257possibly causing a fault. ACPICA BZ 806. Lin Ming. 9258 9259Disassembler: Restructured the code so that all functions that handle 9260external symbols are in a single module. One new file is added, 9261common/dmextern.c. 9262 9263AML Debugger: Added a max count argument for the Batch command (which 9264executes multiple predefined methods within the namespace.) 9265 9266iASL: Updated the compiler documentation (User Reference.) Available at 9267http://www.acpica.org/documentation/. ACPICA BZ 750. 9268 9269AcpiXtract: Updated for Lint and other formatting changes. Close all open 9270files. 9271 9272---------------------------------------- 927303 September 2009. Summary of changes for version 20090903: 9274 92751) ACPI CA Core Subsystem: 9276 9277For Windows Vista compatibility, added the automatic execution of an _INI 9278method located at the namespace root (\_INI). This method is executed at 9279table load time. This support is in addition to the automatic execution 9280of 9281\_SB._INI. Lin Ming. 9282 9283Fixed a possible memory leak in the interpreter for AML package objects 9284if 9285the package initializer list is longer than the defined size of the 9286package. 9287This apparently can only happen if the BIOS changes the package size on 9288the 9289fly (seen in a _PSS object), as ASL compilers do not allow this. The 9290interpreter will truncate the package to the defined size (and issue an 9291error 9292message), but previously could leave the extra objects undeleted if they 9293were 9294pre-created during the argument processing (such is the case if the 9295package 9296consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 9297 9298Fixed a problem seen when a Buffer or String is stored to itself via ASL. 9299This has been reported in the field. Previously, ACPICA would zero out 9300the 9301buffer/string. Now, the operation is treated as a noop. Provides Windows 9302compatibility. ACPICA BZ 803. Lin Ming. 9303 9304Removed an extraneous error message for ASL constructs of the form 9305Store(LocalX,LocalX) when LocalX is uninitialized. These curious 9306statements 9307are seen in many BIOSs and are once again treated as NOOPs and no error 9308is 9309emitted when they are encountered. ACPICA BZ 785. 9310 9311Fixed an extraneous warning message if a _DSM reserved method returns a 9312Package object. _DSM can return any type of object, so validation on the 9313return type cannot be performed. ACPICA BZ 802. 9314 9315Example Code and Data Size: These are the sizes for the OS-independent 9316acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9317debug version of the code includes the debug output trace mechanism and 9318has a 9319much larger code and data size. 9320 9321 Previous Release: 9322 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 9323 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 9324 Current Release: 9325 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 9326 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 9327 93282) iASL Compiler/Disassembler and Tools: 9329 9330iASL: Fixed a problem with the use of the Alias operator and Resource 9331Templates. The correct alias is now constructed and no error is emitted. 9332ACPICA BZ 738. 9333 9334iASL: Implemented the -I option to specify additional search directories 9335for 9336include files. Allows multiple additional search paths for include files. 9337Directories are searched in the order specified on the command line 9338(after 9339the local directory is searched.) ACPICA BZ 800. 9340 9341iASL: Fixed a problem where the full pathname for include files was not 9342emitted for warnings/errors. This caused the IDE support to not work 9343properly. ACPICA BZ 765. 9344 9345iASL: Implemented the -@ option to specify a Windows-style response file 9346containing additional command line options. ACPICA BZ 801. 9347 9348AcpiExec: Added support to load multiple AML files simultaneously (such 9349as 9350a 9351DSDT and multiple SSDTs). Also added support for wildcards within the AML 9352pathname. These features allow all machine tables to be easily loaded and 9353debugged together. ACPICA BZ 804. 9354 9355Disassembler: Added missing support for disassembly of HEST table Error 9356Bank 9357subtables. 9358 9359---------------------------------------- 936030 July 2009. Summary of changes for version 20090730: 9361 9362The ACPI 4.0 implementation for ACPICA is complete with this release. 9363 93641) ACPI CA Core Subsystem: 9365 9366ACPI 4.0: Added header file support for all new and changed ACPI tables. 9367Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 9368new 9369for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 9370BERT, 9371EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 9372There 9373have been some ACPI 4.0 changes to other existing tables. Split the large 9374actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 9375 9376ACPI 4.0: Implemented predefined name validation for all new names. There 9377are 937831 new names in ACPI 4.0. The predefined validation module was split into 9379two 9380files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 9381 9382Implemented support for so-called "module-level executable code". This is 9383executable AML code that exists outside of any control method and is 9384intended 9385to be executed at table load time. Although illegal since ACPI 2.0, this 9386type 9387of code still exists and is apparently still being created. Blocks of 9388this 9389code are now detected and executed as intended. Currently, the code 9390blocks 9391must exist under either an If, Else, or While construct; these are the 9392typical cases seen in the field. ACPICA BZ 762. Lin Ming. 9393 9394Implemented an automatic dynamic repair for predefined names that return 9395nested Package objects. This applies to predefined names that are defined 9396to 9397return a variable-length Package of sub-packages. If the number of sub- 9398packages is one, BIOS code is occasionally seen that creates a simple 9399single 9400package with no sub-packages. This code attempts to fix the problem by 9401wrapping a new package object around the existing package. These methods 9402can 9403be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 9404BZ 9405790. 9406 9407Fixed a regression introduced in 20090625 for the AcpiGetDevices 9408interface. 9409The _HID/_CID matching was broken and no longer matched IDs correctly. 9410ACPICA 9411BZ 793. 9412 9413Fixed a problem with AcpiReset where the reset would silently fail if the 9414register was one of the protected I/O ports. AcpiReset now bypasses the 9415port 9416validation mechanism. This may eventually be driven into the 9417AcpiRead/Write 9418interfaces. 9419 9420Fixed a regression related to the recent update of the AcpiRead/Write 9421interfaces. A sleep/suspend could fail if the optional PM2 Control 9422register 9423does not exist during an attempt to write the Bus Master Arbitration bit. 9424(However, some hosts already delete the code that writes this bit, and 9425the 9426code may in fact be obsolete at this date.) ACPICA BZ 799. 9427 9428Fixed a problem where AcpiTerminate could fault if inadvertently called 9429twice 9430in succession. ACPICA BZ 795. 9431 9432Example Code and Data Size: These are the sizes for the OS-independent 9433acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9434debug version of the code includes the debug output trace mechanism and 9435has a 9436much larger code and data size. 9437 9438 Previous Release: 9439 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 9440 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 9441 Current Release: 9442 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 9443 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 9444 94452) iASL Compiler/Disassembler and Tools: 9446 9447ACPI 4.0: Implemented disassembler support for all new ACPI tables and 9448changes to existing tables. ACPICA BZ 775. 9449 9450---------------------------------------- 945125 June 2009. Summary of changes for version 20090625: 9452 9453The ACPI 4.0 Specification was released on June 16 and is available at 9454www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 9455continue for the next few releases. 9456 94571) ACPI CA Core Subsystem: 9458 9459ACPI 4.0: Implemented interpreter support for the IPMI operation region 9460address space. Includes support for bi-directional data buffers and an 9461IPMI 9462address space handler (to be installed by an IPMI device driver.) ACPICA 9463BZ 9464773. Lin Ming. 9465 9466ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 9467Includes 9468support in both the header files and the disassembler. 9469 9470Completed a major update for the AcpiGetObjectInfo external interface. 9471Changes include: 9472 - Support for variable, unlimited length HID, UID, and CID strings. 9473 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 9474etc.) 9475 - Call the _SxW power methods on behalf of a device object. 9476 - Determine if a device is a PCI root bridge. 9477 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 9478These changes will require an update to all callers of this interface. 9479See 9480the updated ACPICA Programmer Reference for details. One new source file 9481has 9482been added - utilities/utids.c. ACPICA BZ 368, 780. 9483 9484Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 9485transfers. The Value parameter has been extended from 32 bits to 64 bits 9486in 9487order to support new ACPI 4.0 tables. These changes will require an 9488update 9489to 9490all callers of these interfaces. See the ACPICA Programmer Reference for 9491details. ACPICA BZ 768. 9492 9493Fixed several problems with AcpiAttachData. The handler was not invoked 9494when 9495the host node was deleted. The data sub-object was not automatically 9496deleted 9497when the host node was deleted. The interface to the handler had an 9498unused 9499parameter, this was removed. ACPICA BZ 778. 9500 9501Enhanced the function that dumps ACPI table headers. All non-printable 9502characters in the string fields are now replaced with '?' (Signature, 9503OemId, 9504OemTableId, and CompilerId.) ACPI tables with non-printable characters in 9505these fields are occasionally seen in the field. ACPICA BZ 788. 9506 9507Fixed a problem with predefined method repair code where the code that 9508attempts to repair/convert an object of incorrect type is only executed 9509on 9510the first time the predefined method is called. The mechanism that 9511disables 9512warnings on subsequent calls was interfering with the repair mechanism. 9513ACPICA BZ 781. 9514 9515Fixed a possible memory leak in the predefined validation/repair code 9516when 9517a 9518buffer is automatically converted to an expected string object. 9519 9520Removed obsolete 16-bit files from the distribution and from the current 9521git 9522tree head. ACPICA BZ 776. 9523 9524Example Code and Data Size: These are the sizes for the OS-independent 9525acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9526debug version of the code includes the debug output trace mechanism and 9527has a 9528much larger code and data size. 9529 9530 Previous Release: 9531 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9532 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9533 Current Release: 9534 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 9535 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 9536 95372) iASL Compiler/Disassembler and Tools: 9538 9539ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 9540operation region keyword. ACPICA BZ 771, 772. Lin Ming. 9541 9542ACPI 4.0: iASL - implemented compile-time validation support for all new 9543predefined names and control methods (31 total). ACPICA BZ 769. 9544 9545---------------------------------------- 954621 May 2009. Summary of changes for version 20090521: 9547 95481) ACPI CA Core Subsystem: 9549 9550Disabled the preservation of the SCI enable bit in the PM1 control 9551register. 9552The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 9553to 9554be 9555a "preserved" bit - "OSPM always preserves this bit position", section 95564.7.3.2.1. However, some machines fail if this bit is in fact preserved 9557because the bit needs to be explicitly set by the OS as a workaround. No 9558machines fail if the bit is not preserved. Therefore, ACPICA no longer 9559attempts to preserve this bit. 9560 9561Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 9562incorrectly formed _PRT package could cause a fault. Added validation to 9563ensure that each package element is actually a sub-package. 9564 9565Implemented a new interface to install or override a single control 9566method, 9567AcpiInstallMethod. This interface is useful when debugging in order to 9568repair 9569an existing method or to install a missing method without having to 9570override 9571the entire ACPI table. See the ACPICA Programmer Reference for use and 9572examples. Lin Ming, Bob Moore. 9573 9574Fixed several reference count issues with the DdbHandle object that is 9575created from a Load or LoadTable operator. Prevent premature deletion of 9576the 9577object. Also, mark the object as invalid once the table has been 9578unloaded. 9579This is needed because the handle itself may not be deleted after the 9580table 9581unload, depending on whether it has been stored in a named object by the 9582caller. Lin Ming. 9583 9584Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 9585mutexes of the same sync level are acquired but then not released in 9586strict 9587opposite order, the internally maintained Current Sync Level becomes 9588confused 9589and can cause subsequent execution errors. ACPICA BZ 471. 9590 9591Changed the allowable release order for ASL mutex objects. The ACPI 4.0 9592specification has been changed to make the SyncLevel for mutex objects 9593more 9594useful. When releasing a mutex, the SyncLevel of the mutex must now be 9595the 9596same as the current sync level. This makes more sense than the previous 9597rule 9598(SyncLevel less than or equal). This change updates the code to match the 9599specification. 9600 9601Fixed a problem with the local version of the AcpiOsPurgeCache function. 9602The 9603(local) cache must be locked during all cache object deletions. Andrew 9604Baumann. 9605 9606Updated the Load operator to use operation region interfaces. This 9607replaces 9608direct memory mapping with region access calls. Now, all region accesses 9609go 9610through the installed region handler as they should. 9611 9612Simplified and optimized the NsGetNextNode function. Reduced parameter 9613count 9614and reduced code for this frequently used function. 9615 9616Example Code and Data Size: These are the sizes for the OS-independent 9617acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9618debug version of the code includes the debug output trace mechanism and 9619has a 9620much larger code and data size. 9621 9622 Previous Release: 9623 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9624 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9625 Current Release: 9626 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9627 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9628 96292) iASL Compiler/Disassembler and Tools: 9630 9631Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 9632problems 9633with sub-table disassembly and handling invalid sub-tables. Attempt 9634recovery 9635after an invalid sub-table ID. 9636 9637---------------------------------------- 963822 April 2009. Summary of changes for version 20090422: 9639 96401) ACPI CA Core Subsystem: 9641 9642Fixed a compatibility issue with the recently released I/O port 9643protection 9644mechanism. For windows compatibility, 1) On a port protection violation, 9645simply ignore the request and do not return an exception (allow the 9646control 9647method to continue execution.) 2) If only part of the request overlaps a 9648protected port, read/write the individual ports that are not protected. 9649Linux 9650BZ 13036. Lin Ming 9651 9652Enhanced the execution of the ASL/AML BreakPoint operator so that it 9653actually 9654breaks into the AML debugger if the debugger is present. This matches the 9655ACPI-defined behavior. 9656 9657Fixed several possible warnings related to the use of the configurable 9658ACPI_THREAD_ID. This type can now be configured as either an integer or a 9659pointer with no warnings. Also fixes several warnings in printf-like 9660statements for the 64-bit build when the type is configured as a pointer. 9661ACPICA BZ 766, 767. 9662 9663Fixed a number of possible warnings when compiling with gcc 4+ (depending 9664on 9665warning options.) Examples include printf formats, aliasing, unused 9666globals, 9667missing prototypes, missing switch default statements, use of non-ANSI 9668library functions, use of non-ANSI constructs. See generate/unix/Makefile 9669for 9670a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 9671 9672Example Code and Data Size: These are the sizes for the OS-independent 9673acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9674debug version of the code includes the debug output trace mechanism and 9675has a 9676much larger code and data size. 9677 9678 Previous Release: 9679 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9680 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9681 Current Release: 9682 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9683 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9684 96852) iASL Compiler/Disassembler and Tools: 9686 9687iASL: Fixed a generation warning from Bison 2.3 and fixed several 9688warnings 9689on 9690the 64-bit build. 9691 9692iASL: Fixed a problem where the Unix/Linux versions of the compiler could 9693not 9694correctly digest Windows/DOS formatted files (with CR/LF). 9695 9696iASL: Added a new option for "quiet mode" (-va) that produces only the 9697compilation summary, not individual errors and warnings. Useful for large 9698batch compilations. 9699 9700AcpiExec: Implemented a new option (-z) to enable a forced 9701semaphore/mutex 9702timeout that can be used to detect hang conditions during execution of 9703AML 9704code (includes both internal semaphores and AML-defined mutexes and 9705events.) 9706 9707Added new makefiles for the generation of acpica in a generic unix-like 9708environment. These makefiles are intended to generate the acpica tools 9709and 9710utilities from the original acpica git source tree structure. 9711 9712Test Suites: Updated and cleaned up the documentation files. Updated the 9713copyrights to 2009, affecting all source files. Use the new version of 9714iASL 9715with quiet mode. Increased the number of available semaphores in the 9716Windows 9717OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 9718added 9719an alternate implementation of the semaphore timeout to allow aslts to 9720execute fully on Cygwin. 9721 9722---------------------------------------- 972320 March 2009. Summary of changes for version 20090320: 9724 97251) ACPI CA Core Subsystem: 9726 9727Fixed a possible race condition between AcpiWalkNamespace and dynamic 9728table 9729unloads. Added a reader/writer locking mechanism to allow multiple 9730concurrent 9731namespace walks (readers), but block a dynamic table unload until it can 9732gain 9733exclusive write access to the namespace. This fixes a problem where a 9734table 9735unload could (possibly catastrophically) delete the portion of the 9736namespace 9737that is currently being examined by a walk. Adds a new file, utlock.c, 9738that 9739implements the reader/writer lock mechanism. ACPICA BZ 749. 9740 9741Fixed a regression introduced in version 20090220 where a change to the 9742FADT 9743handling could cause the ACPICA subsystem to access non-existent I/O 9744ports. 9745 9746Modified the handling of FADT register and table (FACS/DSDT) addresses. 9747The 9748FADT can contain both 32-bit and 64-bit versions of these addresses. 9749Previously, the 64-bit versions were favored, meaning that if both 32 and 975064 9751versions were valid, but not equal, the 64-bit version was used. This was 9752found to cause some machines to fail. Now, in this case, the 32-bit 9753version 9754is used instead. This now matches the Windows behavior. 9755 9756Implemented a new mechanism to protect certain I/O ports. Provides 9757Microsoft 9758compatibility and protects the standard PC I/O ports from access via AML 9759code. Adds a new file, hwvalid.c 9760 9761Fixed a possible extraneous warning message from the FADT support. The 9762message warns of a 32/64 length mismatch between the legacy and GAS 9763definitions for a register. 9764 9765Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 9766is 9767made obsolete by the port protection mechanism above. It was previously 9768used 9769to validate the entire address range of an operation region, which could 9770be 9771incorrect if the range included illegal ports, but fields within the 9772operation region did not actually access those ports. Validation is now 9773performed on a per-field basis instead of the entire region. 9774 9775Modified the handling of the PM1 Status Register ignored bit (bit 11.) 9776Ignored bits must be "preserved" according to the ACPI spec. Usually, 9777this 9778means a read/modify/write when writing to the register. However, for 9779status 9780registers, writing a one means clear the event. Writing a zero means 9781preserve 9782the event (do not clear.) This behavior is clarified in the ACPI 4.0 9783spec, 9784and the ACPICA code now simply always writes a zero to the ignored bit. 9785 9786Modified the handling of ignored bits for the PM1 A/B Control Registers. 9787As 9788per the ACPI specification, for the control registers, preserve 9789(read/modify/write) all bits that are defined as either reserved or 9790ignored. 9791 9792Updated the handling of write-only bits in the PM1 A/B Control Registers. 9793When reading the register, zero the write-only bits as per the ACPI spec. 9794ACPICA BZ 443. Lin Ming. 9795 9796Removed "Linux" from the list of supported _OSI strings. Linux no longer 9797wants to reply true to this request. The Windows strings are the only 9798paths 9799through the AML that are tested and known to work properly. 9800 9801 Previous Release: 9802 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9803 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9804 Current Release: 9805 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9806 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9807 98082) iASL Compiler/Disassembler and Tools: 9809 9810Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 9811and 9812aetables.c 9813 9814---------------------------------------- 981520 February 2009. Summary of changes for version 20090220: 9816 98171) ACPI CA Core Subsystem: 9818 9819Optimized the ACPI register locking. Removed locking for reads from the 9820ACPI 9821bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 9822is 9823not required when reading the single-bit registers. The 9824AcpiGetRegisterUnlocked function is no longer needed and has been 9825removed. 9826This will improve performance for reads on these registers. ACPICA BZ 9827760. 9828 9829Fixed the parameter validation for AcpiRead/Write. Now return 9830AE_BAD_PARAMETER if the input register pointer is null, and 9831AE_BAD_ADDRESS 9832if 9833the register has an address of zero. Previously, these cases simply 9834returned 9835AE_OK. For optional registers such as PM1B status/enable/control, the 9836caller 9837should check for a valid register address before calling. ACPICA BZ 748. 9838 9839Renamed the external ACPI bit register access functions. Renamed 9840AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 9841functions. The new names are AcpiReadBitRegister and 9842AcpiWriteBitRegister. 9843Also, restructured the code for these functions by simplifying the code 9844path 9845and condensing duplicate code to reduce code size. 9846 9847Added new functions to transparently handle the possibly split PM1 A/B 9848registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 9849functions 9850now handle the split registers for PM1 Status, Enable, and Control. 9851ACPICA 9852BZ 9853746. 9854 9855Added a function to handle the PM1 control registers, 9856AcpiHwWritePm1Control. 9857This function writes both of the PM1 control registers (A/B). These 9858registers 9859are different than the PM1 A/B status and enable registers in that 9860different 9861values can be written to the A/B registers. Most notably, the SLP_TYP 9862bits 9863can be different, as per the values returned from the _Sx predefined 9864methods. 9865 9866Removed an extra register write within AcpiHwClearAcpiStatus. This 9867function 9868was writing an optional PM1B status register twice. The existing call to 9869the 9870low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 9871A/B 9872register. ACPICA BZ 751. 9873 9874Split out the PM1 Status registers from the FADT. Added new globals for 9875these 9876registers (A/B), similar to the way the PM1 Enable registers are handled. 9877Instead of overloading the FADT Event Register blocks. This makes the 9878code 9879clearer and less prone to error. 9880 9881Fixed the warning message for when the platform contains too many ACPI 9882tables 9883for the default size of the global root table data structure. The 9884calculation 9885for the truncation value was incorrect. 9886 9887Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 9888obsolete macro, since it is now a simple reference to ->common.type. 9889There 9890were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 9891 9892Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 9893TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 9894simply SLEEP_TYPE. ACPICA BZ 754. 9895 9896Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 9897function is only needed on 64-bit host operating systems and is thus not 9898included for 32-bit hosts. 9899 9900Debug output: print the input and result for invocations of the _OSI 9901reserved 9902control method via the ACPI_LV_INFO debug level. Also, reduced some of 9903the 9904verbosity of this debug level. Len Brown. 9905 9906Example Code and Data Size: These are the sizes for the OS-independent 9907acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9908debug version of the code includes the debug output trace mechanism and 9909has a 9910much larger code and data size. 9911 9912 Previous Release: 9913 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9914 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9915 Current Release: 9916 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9917 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9918 99192) iASL Compiler/Disassembler and Tools: 9920 9921Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 9922various legal performance profiles. 9923 9924---------------------------------------- 992523 January 2009. Summary of changes for version 20090123: 9926 99271) ACPI CA Core Subsystem: 9928 9929Added the 2009 copyright to all module headers and signons. This affects 9930virtually every file in the ACPICA core subsystem, the iASL compiler, and 9931the tools/utilities. 9932 9933Implemented a change to allow the host to override any ACPI table, 9934including 9935dynamically loaded tables. Previously, only the DSDT could be replaced by 9936the 9937host. With this change, the AcpiOsTableOverride interface is called for 9938each 9939table found in the RSDT/XSDT during ACPICA initialization, and also 9940whenever 9941a table is dynamically loaded via the AML Load operator. 9942 9943Updated FADT flag definitions, especially the Boot Architecture flags. 9944 9945Debugger: For the Find command, automatically pad the input ACPI name 9946with 9947underscores if the name is shorter than 4 characters. This enables a 9948match 9949with the actual namespace entry which is itself padded with underscores. 9950 9951Example Code and Data Size: These are the sizes for the OS-independent 9952acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9953debug version of the code includes the debug output trace mechanism and 9954has a 9955much larger code and data size. 9956 9957 Previous Release: 9958 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 9959 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 9960 Current Release: 9961 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9962 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9963 99642) iASL Compiler/Disassembler and Tools: 9965 9966Fix build error under Bison-2.4. 9967 9968Disassembler: Enhanced FADT support. Added decoding of the Boot 9969Architecture 9970flags. Now decode all flags, regardless of the FADT version. Flag output 9971includes the FADT version which first defined each flag. 9972 9973The iASL -g option now dumps the RSDT to a file (in addition to the FADT 9974and 9975DSDT). Windows only. 9976 9977---------------------------------------- 997804 December 2008. Summary of changes for version 20081204: 9979 99801) ACPI CA Core Subsystem: 9981 9982The ACPICA Programmer Reference has been completely updated and revamped 9983for 9984this release. This includes updates to the external interfaces, OSL 9985interfaces, the overview sections, and the debugger reference. 9986 9987Several new ACPICA interfaces have been implemented and documented in the 9988programmer reference: 9989AcpiReset - Writes the reset value to the FADT-defined reset register. 9990AcpiDisableAllGpes - Disable all available GPEs. 9991AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 9992AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 9993AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 9994AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 9995AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 9996 9997Most of the public ACPI hardware-related interfaces have been moved to a 9998new 9999file, components/hardware/hwxface.c 10000 10001Enhanced the FADT parsing and low-level ACPI register access: The ACPI 10002register lengths within the FADT are now used, and the low level ACPI 10003register access no longer hardcodes the ACPI register lengths. Given that 10004there may be some risk in actually trusting the FADT register lengths, a 10005run- 10006time option was added to fall back to the default hardcoded lengths if 10007the 10008FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 10009option is set to true for now, and a warning is issued if a suspicious 10010FADT 10011register length is overridden with the default value. 10012 10013Fixed a reference count issue in NsRepairObject. This problem was 10014introduced 10015in version 20081031 as part of a fix to repair Buffer objects within 10016Packages. Lin Ming. 10017 10018Added semaphore support to the Linux/Unix application OS-services layer 10019(OSL). ACPICA BZ 448. Lin Ming. 10020 10021Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 10022will 10023be implemented in the OSL, or will binary semaphores be used instead. 10024 10025Example Code and Data Size: These are the sizes for the OS-independent 10026acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10027debug version of the code includes the debug output trace mechanism and 10028has a 10029much larger code and data size. 10030 10031 Previous Release: 10032 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 10033 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 10034 Current Release: 10035 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 10036 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 10037 100382) iASL Compiler/Disassembler and Tools: 10039 10040iASL: Completed the '-e' option to include additional ACPI tables in 10041order 10042to 10043aid with disassembly and External statement generation. ACPICA BZ 742. 10044Lin 10045Ming. 10046 10047iASL: Removed the "named object in while loop" error. The compiler cannot 10048determine how many times a loop will execute. ACPICA BZ 730. 10049 10050Disassembler: Implemented support for FADT revision 2 (MS extension). 10051ACPICA 10052BZ 743. 10053 10054Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 10055MCFG). 10056 10057---------------------------------------- 1005831 October 2008. Summary of changes for version 20081031: 10059 100601) ACPI CA Core Subsystem: 10061 10062Restructured the ACPICA header files into public/private. acpi.h now 10063includes 10064only the "public" acpica headers. All other acpica headers are "private" 10065and 10066should not be included by acpica users. One new file, accommon.h is used 10067to 10068include the commonly used private headers for acpica code generation. 10069Future 10070plans include moving all private headers to a new subdirectory. 10071 10072Implemented an automatic Buffer->String return value conversion for 10073predefined ACPI methods. For these methods (such as _BIF), added 10074automatic 10075conversion for return objects that are required to be a String, but a 10076Buffer 10077was found instead. This can happen when reading string battery data from 10078an 10079operation region, because it used to be difficult to convert the data 10080from 10081buffer to string from within the ASL. Ensures that the host OS is 10082provided 10083with a valid null-terminated string. Linux BZ 11822. 10084 10085Updated the FACS waking vector interfaces. Split 10086AcpiSetFirmwareWakingVector 10087into two: one for the 32-bit vector, another for the 64-bit vector. This 10088is 10089required because the host OS must setup the wake much differently for 10090each 10091vector (real vs. protected mode, etc.) and the interface itself should 10092not 10093be 10094deciding which vector to use. Also, eliminated the 10095GetFirmwareWakingVector 10096interface, as it served no purpose (only the firmware reads the vector, 10097OS 10098only writes the vector.) ACPICA BZ 731. 10099 10100Implemented a mechanism to escape infinite AML While() loops. Added a 10101loop 10102counter to force exit from AML While loops if the count becomes too 10103large. 10104This can occur in poorly written AML when the hardware does not respond 10105within a while loop and the loop does not implement a timeout. The 10106maximum 10107loop count is configurable. A new exception code is returned when a loop 10108is 10109broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 10110 10111Optimized the execution of AML While loops. Previously, a control state 10112object was allocated and freed for each execution of the loop. The 10113optimization is to simply reuse the control state for each iteration. 10114This 10115speeds up the raw loop execution time by about 5%. 10116 10117Enhanced the implicit return mechanism. For Windows compatibility, return 10118an 10119implicit integer of value zero for methods that contain no executable 10120code. 10121Such methods are seen in the field as stubs (presumably), and can cause 10122drivers to fail if they expect a return value. Lin Ming. 10123 10124Allow multiple backslashes as root prefixes in namepaths. In a fully 10125qualified namepath, allow multiple backslash prefixes. This can happen 10126(and 10127is seen in the field) because of the use of a double-backslash in strings 10128(since backslash is the escape character) causing confusion. ACPICA BZ 10129739 10130Lin Ming. 10131 10132Emit a warning if two different FACS or DSDT tables are discovered in the 10133FADT. Checks if there are two valid but different addresses for the FACS 10134and 10135DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 10136 10137Consolidated the method argument count validation code. Merged the code 10138that 10139validates control method argument counts into the predefined validation 10140module. Eliminates possible multiple warnings for incorrect argument 10141counts. 10142 10143Implemented ACPICA example code. Includes code for ACPICA initialization, 10144handler installation, and calling a control method. Available at 10145source/tools/examples. 10146 10147Added a global pointer for FACS table to simplify internal FACS access. 10148Use 10149the global pointer instead of using AcpiGetTableByIndex for each FACS 10150access. 10151This simplifies the code for the Global Lock and the Firmware Waking 10152Vector(s). 10153 10154Example Code and Data Size: These are the sizes for the OS-independent 10155acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10156debug version of the code includes the debug output trace mechanism and 10157has a 10158much larger code and data size. 10159 10160 Previous Release: 10161 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 10162 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 10163 Current Release: 10164 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 10165 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 10166 101672) iASL Compiler/Disassembler and Tools: 10168 10169iASL: Improved disassembly of external method calls. Added the -e option 10170to 10171allow the inclusion of additional ACPI tables to help with the 10172disassembly 10173of 10174method invocations and the generation of external declarations during the 10175disassembly. Certain external method invocations cannot be disassembled 10176properly without the actual declaration of the method. Use the -e option 10177to 10178include the table where the external method(s) are actually declared. 10179Most 10180useful for disassembling SSDTs that make method calls back to the master 10181DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 10182-d 10183-e dsdt.aml ssdt1.aml 10184 10185iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 10186problem where the use of an alias within a namepath would result in a not 10187found error or cause the compiler to fault. Also now allows forward 10188references from the Alias operator itself. ACPICA BZ 738. 10189 10190---------------------------------------- 1019126 September 2008. Summary of changes for version 20080926: 10192 101931) ACPI CA Core Subsystem: 10194 10195Designed and implemented a mechanism to validate predefined ACPI methods 10196and 10197objects. This code validates the predefined ACPI objects (objects whose 10198names 10199start with underscore) that appear in the namespace, at the time they are 10200evaluated. The argument count and the type of the returned object are 10201validated against the ACPI specification. The purpose of this validation 10202is 10203to detect problems with the BIOS-implemented predefined ACPI objects 10204before 10205the results are returned to the ACPI-related drivers. Future enhancements 10206may 10207include actual repair of incorrect return objects where possible. Two new 10208files are nspredef.c and acpredef.h. 10209 10210Fixed a fault in the AML parser if a memory allocation fails during the 10211Op 10212completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 10213 10214Fixed an issue with implicit return compatibility. This change improves 10215the 10216implicit return mechanism to be more compatible with the MS interpreter. 10217Lin 10218Ming, ACPICA BZ 349. 10219 10220Implemented support for zero-length buffer-to-string conversions. Allow 10221zero 10222length strings during interpreter buffer-to-string conversions. For 10223example, 10224during the ToDecimalString and ToHexString operators, as well as implicit 10225conversions. Fiodor Suietov, ACPICA BZ 585. 10226 10227Fixed two possible memory leaks in the error exit paths of 10228AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 10229are 10230similar in that they use a stack of state objects in order to eliminate 10231recursion. The stack must be fully unwound and deallocated if an error 10232occurs. Lin Ming. ACPICA BZ 383. 10233 10234Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 10235global 10236ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 10237Moore ACPICA BZ 442. 10238 10239Removed the obsolete version number in module headers. Removed the 10240"$Revision" number that appeared in each module header. This version 10241number 10242was useful under SourceSafe and CVS, but has no meaning under git. It is 10243not 10244only incorrect, it could also be misleading. 10245 10246Example Code and Data Size: These are the sizes for the OS-independent 10247acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10248debug version of the code includes the debug output trace mechanism and 10249has a 10250much larger code and data size. 10251 10252 Previous Release: 10253 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10254 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 10255 Current Release: 10256 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 10257 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 10258 10259---------------------------------------- 1026029 August 2008. Summary of changes for version 20080829: 10261 102621) ACPI CA Core Subsystem: 10263 10264Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 10265Reference. Changes include the elimination of cheating on the Object 10266field 10267for the DdbHandle subtype, addition of a reference class field to 10268differentiate the various reference types (instead of an AML opcode), and 10269the 10270cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 10271 10272Reduce an error to a warning for an incorrect method argument count. 10273Previously aborted with an error if too few arguments were passed to a 10274control method via the external ACPICA interface. Now issue a warning 10275instead 10276and continue. Handles the case where the method inadvertently declares 10277too 10278many arguments, but does not actually use the extra ones. Applies mainly 10279to 10280the predefined methods. Lin Ming. Linux BZ 11032. 10281 10282Disallow the evaluation of named object types with no intrinsic value. 10283Return 10284AE_TYPE for objects that have no value and therefore evaluation is 10285undefined: 10286Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 10287of 10288these types were allowed, but an exception would be generated at some 10289point 10290during the evaluation. Now, the error is generated up front. 10291 10292Fixed a possible memory leak in the AcpiNsGetExternalPathname function 10293(nsnames.c). Fixes a leak in the error exit path. 10294 10295Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 10296debug 10297levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 10298ACPI_EXCEPTION 10299interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 10300ACPI_LV_EVENTS. 10301 10302Removed obsolete and/or unused exception codes from the acexcep.h header. 10303There is the possibility that certain device drivers may be affected if 10304they 10305use any of these exceptions. 10306 10307The ACPICA documentation has been added to the public git source tree, 10308under 10309acpica/documents. Included are the ACPICA programmer reference, the iASL 10310compiler reference, and the changes.txt release logfile. 10311 10312Example Code and Data Size: These are the sizes for the OS-independent 10313acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10314debug version of the code includes the debug output trace mechanism and 10315has a 10316much larger code and data size. 10317 10318 Previous Release: 10319 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10320 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 10321 Current Release: 10322 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10323 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 10324 103252) iASL Compiler/Disassembler and Tools: 10326 10327Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 10328defines _SCP with 3 arguments. Previous versions defined it with only 1 10329argument. iASL now allows both definitions. 10330 10331iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 10332zero- 10333length subtables when disassembling ACPI tables. Also fixed a couple of 10334errors where a full 16-bit table type field was not extracted from the 10335input 10336properly. 10337 10338acpisrc: Improve comment counting mechanism for generating source code 10339statistics. Count first and last lines of multi-line comments as 10340whitespace, 10341not comment lines. Handle Linux legal header in addition to standard 10342acpica 10343header. 10344 10345---------------------------------------- 10346 1034729 July 2008. Summary of changes for version 20080729: 10348 103491) ACPI CA Core Subsystem: 10350 10351Fix a possible deadlock in the GPE dispatch. Remove call to 10352AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 10353attempt 10354to acquire the GPE lock but can deadlock since the GPE lock is already 10355held 10356at dispatch time. This code was introduced in version 20060831 as a 10357response 10358to Linux BZ 6881 and has since been removed from Linux. 10359 10360Add a function to dereference returned reference objects. Examines the 10361return 10362object from a call to AcpiEvaluateObject. Any Index or RefOf references 10363are 10364automatically dereferenced in an attempt to return something useful 10365(these 10366reference types cannot be converted into an external ACPI_OBJECT.) 10367Provides 10368MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 10369 10370x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 10371subtables for the MADT and one new subtable for the SRAT. Includes 10372disassembler and AcpiSrc support. Data from the Intel 64 Architecture 10373x2APIC 10374Specification, June 2008. 10375 10376Additional error checking for pathname utilities. Add error check after 10377all 10378calls to AcpiNsGetPathnameLength. Add status return from 10379AcpiNsBuildExternalPath and check after all calls. Add parameter 10380validation 10381to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 10382 10383Return status from the global init function AcpiUtGlobalInitialize. This 10384is 10385used by both the kernel subsystem and the utilities such as iASL 10386compiler. 10387The function could possibly fail when the caches are initialized. Yang 10388Yi. 10389 10390Add a function to decode reference object types to strings. Created for 10391improved error messages. 10392 10393Improve object conversion error messages. Better error messages during 10394object 10395conversion from internal to the external ACPI_OBJECT. Used for external 10396calls 10397to AcpiEvaluateObject. 10398 10399Example Code and Data Size: These are the sizes for the OS-independent 10400acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10401debug version of the code includes the debug output trace mechanism and 10402has a 10403much larger code and data size. 10404 10405 Previous Release: 10406 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 10407 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 10408 Current Release: 10409 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10410 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 10411 104122) iASL Compiler/Disassembler and Tools: 10413 10414Debugger: fix a possible hang when evaluating non-methods. Fixes a 10415problem 10416introduced in version 20080701. If the object being evaluated (via 10417execute 10418command) is not a method, the debugger can hang while trying to obtain 10419non- 10420existent parameters. 10421 10422iASL: relax error for using reserved "_T_x" identifiers. These names can 10423appear in a disassembled ASL file if they were emitted by the original 10424compiler. Instead of issuing an error or warning and forcing the user to 10425manually change these names, issue a remark instead. 10426 10427iASL: error if named object created in while loop. Emit an error if any 10428named 10429object is created within a While loop. If allowed, this code will 10430generate 10431a 10432run-time error on the second iteration of the loop when an attempt is 10433made 10434to 10435create the same named object twice. ACPICA bugzilla 730. 10436 10437iASL: Support absolute pathnames for include files. Add support for 10438absolute 10439pathnames within the Include operator. previously, only relative 10440pathnames 10441were supported. 10442 10443iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 10444Descriptor. 10445The ACPI spec requires one interrupt minimum. BZ 423 10446 10447iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 10448Handles the case for the Interrupt Resource Descriptor where 10449the ResourceSource argument is omitted but ResourceSourceIndex 10450is present. Now leave room for the Index. BZ 426 10451 10452iASL: Prevent error message if CondRefOf target does not exist. Fixes 10453cases 10454where an error message is emitted if the target does not exist. BZ 516 10455 10456iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 10457(get ACPI tables on Windows). This was apparently broken in version 1045820070919. 10459 10460AcpiXtract: Handle EOF while extracting data. Correctly handle the case 10461where 10462the EOF happens immediately after the last table in the input file. Print 10463completion message. Previously, no message was displayed in this case. 10464 10465---------------------------------------- 1046601 July 2008. Summary of changes for version 20080701: 10467 104680) Git source tree / acpica.org 10469 10470Fixed a problem where a git-clone from http would not transfer the entire 10471source tree. 10472 104731) ACPI CA Core Subsystem: 10474 10475Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 10476enable bit. Now performs a read-change-write of the enable register 10477instead 10478of simply writing out the cached enable mask. This will prevent 10479inadvertent 10480enabling of GPEs if a rogue GPE is received during initialization (before 10481GPE 10482handlers are installed.) 10483 10484Implemented a copy for dynamically loaded tables. Previously, dynamically 10485loaded tables were simply mapped - but on some machines this memory is 10486corrupted after suspend. Now copy the table to a local buffer. For the 10487OpRegion case, added checksum verify. Use the table length from the table 10488header, not the region length. For the Buffer case, use the table length 10489also. Dennis Noordsij, Bob Moore. BZ 10734 10490 10491Fixed a problem where the same ACPI table could not be dynamically loaded 10492and 10493unloaded more than once. Without this change, a table cannot be loaded 10494again 10495once it has been loaded/unloaded one time. The current mechanism does not 10496unregister a table upon an unload. During a load, if the same table is 10497found, 10498this no longer returns an exception. BZ 722 10499 10500Fixed a problem where the wrong descriptor length was calculated for the 10501EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 10502EndTag 10503are calculated as 12 bytes long, but the actual length in the internal 10504descriptor is 16 because of the round-up to 8 on the 64-bit build. 10505Reported 10506by Linn Crosetto. BZ 728 10507 10508Fixed a possible memory leak in the Unload operator. The DdbHandle 10509returned 10510by Load() did not have its reference count decremented during unload, 10511leading 10512to a memory leak. Lin Ming. BZ 727 10513 10514Fixed a possible memory leak when deleting thermal/processor objects. Any 10515associated notify handlers (and objects) were not being deleted. Fiodor 10516Suietov. BZ 506 10517 10518Fixed the ordering of the ASCII names in the global mutex table to match 10519the 10520actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 10521only. 10522Vegard Nossum. BZ 726 10523 10524Enhanced the AcpiGetObjectInfo interface to return the number of required 10525arguments if the object is a control method. Added this call to the 10526debugger 10527so the proper number of default arguments are passed to a method. This 10528prevents a warning when executing methods from AcpiExec. 10529 10530Added a check for an invalid handle in AcpiGetObjectInfo. Return 10531AE_BAD_PARAMETER if input handle is invalid. BZ 474 10532 10533Fixed an extraneous warning from exconfig.c on the 64-bit build. 10534 10535Example Code and Data Size: These are the sizes for the OS-independent 10536acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10537debug version of the code includes the debug output trace mechanism and 10538has a 10539much larger code and data size. 10540 10541 Previous Release: 10542 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10543 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10544 Current Release: 10545 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 10546 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 10547 105482) iASL Compiler/Disassembler and Tools: 10549 10550iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 10551resource descriptor names. 10552 10553iASL: Detect invalid ASCII characters in input (windows version). Removed 10554the 10555"-CF" flag from the flex compile, enables correct detection of non-ASCII 10556characters in the input. BZ 441 10557 10558iASL: Eliminate warning when result of LoadTable is not used. Eliminate 10559the 10560"result of operation not used" warning when the DDB handle returned from 10561LoadTable is not used. The warning is not needed. BZ 590 10562 10563AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 10564method 10565to 10566pass address of table to the AML. Added option to disable OpRegion 10567simulation 10568to allow creation of an OpRegion with a real address that was passed to 10569_CFG. 10570All of this allows testing of the Load and Unload operators from 10571AcpiExec. 10572 10573Debugger: update tables command for unloaded tables. Handle unloaded 10574tables 10575and use the standard table header output routine. 10576 10577---------------------------------------- 1057809 June 2008. Summary of changes for version 20080609: 10579 105801) ACPI CA Core Subsystem: 10581 10582Implemented a workaround for reversed _PRT entries. A significant number 10583of 10584BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 10585change dynamically detects and repairs this problem. Provides 10586compatibility 10587with MS ACPI. BZ 6859 10588 10589Simplified the internal ACPI hardware interfaces to eliminate the locking 10590flag parameter from Register Read/Write. Added a new external interface, 10591AcpiGetRegisterUnlocked. 10592 10593Fixed a problem where the invocation of a GPE control method could hang. 10594This 10595was a regression introduced in 20080514. The new method argument count 10596validation mechanism can enter an infinite loop when a GPE method is 10597dispatched. Problem fixed by removing the obsolete code that passed GPE 10598block 10599information to the notify handler via the control method parameter 10600pointer. 10601 10602Fixed a problem where the _SST execution status was incorrectly returned 10603to 10604the caller of AcpiEnterSleepStatePrep. This was a regression introduced 10605in 1060620080514. _SST is optional and a NOT_FOUND exception should never be 10607returned. BZ 716 10608 10609Fixed a problem where a deleted object could be accessed from within the 10610AML 10611parser. This was a regression introduced in version 20080123 as a fix for 10612the 10613Unload operator. Lin Ming. BZ 10669 10614 10615Cleaned up the debug operand dump mechanism. Eliminated unnecessary 10616operands 10617and eliminated the use of a negative index in a loop. Operands are now 10618displayed in the correct order, not backwards. This also fixes a 10619regression 10620introduced in 20080514 on 64-bit systems where the elimination of 10621ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 10622715 10623 10624Fixed a possible memory leak in EvPciConfigRegionSetup where the error 10625exit 10626path did not delete a locally allocated structure. 10627 10628Updated definitions for the DMAR and SRAT tables to synchronize with the 10629current specifications. Includes disassembler support. 10630 10631Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 10632loop termination value was used. Loop terminated on iteration early, 10633missing 10634one mutex. Linn Crosetto 10635 10636Example Code and Data Size: These are the sizes for the OS-independent 10637acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10638debug version of the code includes the debug output trace mechanism and 10639has a 10640much larger code and data size. 10641 10642 Previous Release: 10643 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10644 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10645 Current Release: 10646 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10647 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10648 106492) iASL Compiler/Disassembler and Tools: 10650 10651Disassembler: Implemented support for EisaId() within _CID objects. Now 10652disassemble integer _CID objects back to EisaId invocations, including 10653multiple integers within _CID packages. Includes single-step support for 10654debugger also. 10655 10656Disassembler: Added support for DMAR and SRAT table definition changes. 10657 10658---------------------------------------- 1065914 May 2008. Summary of changes for version 20080514: 10660 106611) ACPI CA Core Subsystem: 10662 10663Fixed a problem where GPEs were enabled too early during the ACPICA 10664initialization. This could lead to "handler not installed" errors on some 10665machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 10666This 10667ensures that all operation regions and devices throughout the namespace 10668have 10669been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 10670 10671Implemented a change to the enter sleep code. Moved execution of the _GTS 10672method to just before setting sleep enable bit. The execution was moved 10673from 10674AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 10675immediately before the SLP_EN bit is set, as per the ACPI specification. 10676Luming Yu, BZ 1653. 10677 10678Implemented a fix to disable unknown GPEs (2nd version). Now always 10679disable 10680the GPE, even if ACPICA thinks that that it is already disabled. It is 10681possible that the AML or some other code has enabled the GPE unbeknownst 10682to 10683the ACPICA code. 10684 10685Fixed a problem with the Field operator where zero-length fields would 10686return 10687an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 10688ASL 10689field declarations in Field(), BankField(), and IndexField(). BZ 10606. 10690 10691Implemented a fix for the Load operator, now load the table at the 10692namespace 10693root. This reverts a change introduced in version 20071019. The table is 10694now 10695loaded at the namespace root even though this goes against the ACPI 10696specification. This provides compatibility with other ACPI 10697implementations. 10698The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 10699Ming. 10700 10701Fixed a problem where ACPICA would not Load() tables with unusual 10702signatures. 10703Now ignore ACPI table signature for Load() operator. Only "SSDT" is 10704acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 10705Therefore, signature validation is worthless. Apparently MS ACPI accepts 10706such 10707signatures, ACPICA must be compatible. BZ 10454. 10708 10709Fixed a possible negative array index in AcpiUtValidateException. Added 10710NULL 10711fields to the exception string arrays to eliminate a -1 subtraction on 10712the 10713SubStatus field. 10714 10715Updated the debug tracking macros to reduce overall code and data size. 10716Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 10717instead of pointers to static strings. Jan Beulich and Bob Moore. 10718 10719Implemented argument count checking in control method invocation via 10720AcpiEvaluateObject. Now emit an error if too few arguments, warning if 10721too 10722many. This applies only to extern programmatic control method execution, 10723not 10724method-to-method calls within the AML. Lin Ming. 10725 10726Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 10727no 10728longer needed, especially with the removal of 16-bit support. It was 10729replaced 10730mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 10731bit 10732on 1073332/64-bit platforms is required. 10734 10735Added the C const qualifier for appropriate string constants -- mostly 10736MODULE_NAME and printf format strings. Jan Beulich. 10737 10738Example Code and Data Size: These are the sizes for the OS-independent 10739acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10740debug version of the code includes the debug output trace mechanism and 10741has a 10742much larger code and data size. 10743 10744 Previous Release: 10745 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10746 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10747 Current Release: 10748 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10749 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10750 107512) iASL Compiler/Disassembler and Tools: 10752 10753Implemented ACPI table revision ID validation in the disassembler. Zero 10754is 10755always invalid. For DSDTs, the ID controls the interpreter integer width. 107561 10757means 32-bit and this is unusual. 2 or greater is 64-bit. 10758 10759---------------------------------------- 1076021 March 2008. Summary of changes for version 20080321: 10761 107621) ACPI CA Core Subsystem: 10763 10764Implemented an additional change to the GPE support in order to suppress 10765spurious or stray GPEs. The AcpiEvDisableGpe function will now 10766permanently 10767disable incoming GPEs that are neither enabled nor disabled -- meaning 10768that 10769the GPE is unknown to the system. This should prevent future interrupt 10770floods 10771from that GPE. BZ 6217 (Zhang Rui) 10772 10773Fixed a problem where NULL package elements were not returned to the 10774AcpiEvaluateObject interface correctly. The element was simply ignored 10775instead of returning a NULL ACPI_OBJECT package element, potentially 10776causing 10777a buffer overflow and/or confusing the caller who expected a fixed number 10778of 10779elements. BZ 10132 (Lin Ming, Bob Moore) 10780 10781Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 10782Dword, 10783Qword), Field, BankField, and IndexField operators when invoked from 10784inside 10785an executing control method. In this case, these operators created 10786namespace 10787nodes that were incorrectly left marked as permanent nodes instead of 10788temporary nodes. This could cause a problem if there is race condition 10789between an exiting control method and a running namespace walk. (Reported 10790by 10791Linn Crosetto) 10792 10793Fixed a problem where the CreateField and CreateXXXField operators would 10794incorrectly allow duplicate names (the name of the field) with no 10795exception 10796generated. 10797 10798Implemented several changes for Notify handling. Added support for new 10799Notify 10800values (ACPI 2.0+) and improved the Notify debug output. Notify on 10801PowerResource objects is no longer allowed, as per the ACPI 10802specification. 10803(Bob Moore, Zhang Rui) 10804 10805All Reference Objects returned via the AcpiEvaluateObject interface are 10806now 10807marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 10808for 10809NULL objects - either NULL package elements or unresolved named 10810references. 10811 10812Fixed a problem where an extraneous debug message was produced for 10813package 10814objects (when debugging enabled). The message "Package List length larger 10815than NumElements count" is now produced in the correct case, and is now 10816an 10817error message rather than a debug message. Added a debug message for the 10818opposite case, where NumElements is larger than the Package List (the 10819package 10820will be padded out with NULL elements as per the ACPI spec.) 10821 10822Implemented several improvements for the output of the ASL "Debug" object 10823to 10824clarify and keep all data for a given object on one output line. 10825 10826Fixed two size calculation issues with the variable-length Start 10827Dependent 10828resource descriptor. 10829 10830Example Code and Data Size: These are the sizes for the OS-independent 10831acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10832debug version of the code includes the debug output trace mechanism and 10833has 10834a much larger code and data size. 10835 10836 Previous Release: 10837 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10838 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10839 Current Release: 10840 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10841 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10842 108432) iASL Compiler/Disassembler and Tools: 10844 10845Fixed a problem with the use of the Switch operator where execution of 10846the 10847containing method by multiple concurrent threads could cause an 10848AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 10849actual Switch opcode, it must be simulated with local named temporary 10850variables and if/else pairs. The solution chosen was to mark any method 10851that 10852uses Switch as Serialized, thus preventing multiple thread entries. BZ 10853469. 10854 10855---------------------------------------- 1085613 February 2008. Summary of changes for version 20080213: 10857 108581) ACPI CA Core Subsystem: 10859 10860Implemented another MS compatibility design change for GPE/Notify 10861handling. 10862GPEs are now cleared/enabled asynchronously to allow all pending notifies 10863to 10864complete first. It is expected that the OSL will queue the enable request 10865behind all pending notify requests (may require changes to the local host 10866OSL 10867in AcpiOsExecute). Alexey Starikovskiy. 10868 10869Fixed a problem where buffer and package objects passed as arguments to a 10870control method via the external AcpiEvaluateObject interface could cause 10871an 10872AE_AML_INTERNAL exception depending on the order and type of operators 10873executed by the target control method. 10874 10875Fixed a problem where resource descriptor size optimization could cause a 10876problem when a _CRS resource template is passed to a _SRS method. The 10877_SRS 10878resource template must use the same descriptors (with the same size) as 10879returned from _CRS. This change affects the following resource 10880descriptors: 10881IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 108829487) 10883 10884Fixed a problem where a CopyObject to RegionField, BankField, and 10885IndexField 10886objects did not perform an implicit conversion as it should. These types 10887must 10888retain their initial type permanently as per the ACPI specification. 10889However, 10890a CopyObject to all other object types should not perform an implicit 10891conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 10892 10893Fixed a problem with the AcpiGetDevices interface where the mechanism to 10894match device CIDs did not examine the entire list of available CIDs, but 10895instead aborted on the first non-matching CID. Andrew Patterson. 10896 10897Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 10898was 10899inadvertently changed to return a 16-bit value instead of a 32-bit value, 10900truncating the upper dword of a 64-bit value. This macro is only used to 10901display debug output, so no incorrect calculations were made. Also, 10902reimplemented the macro so that a 64-bit shift is not performed by 10903inefficient compilers. 10904 10905Added missing va_end statements that should correspond with each va_start 10906statement. 10907 10908Example Code and Data Size: These are the sizes for the OS-independent 10909acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10910debug version of the code includes the debug output trace mechanism and 10911has 10912a much larger code and data size. 10913 10914 Previous Release: 10915 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10916 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10917 Current Release: 10918 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10919 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10920 109212) iASL Compiler/Disassembler and Tools: 10922 10923Implemented full disassembler support for the following new ACPI tables: 10924BERT, EINJ, and ERST. Implemented partial disassembler support for the 10925complicated HEST table. These tables support the Windows Hardware Error 10926Architecture (WHEA). 10927 10928---------------------------------------- 1092923 January 2008. Summary of changes for version 20080123: 10930 109311) ACPI CA Core Subsystem: 10932 10933Added the 2008 copyright to all module headers and signons. This affects 10934virtually every file in the ACPICA core subsystem, the iASL compiler, and 10935the tools/utilities. 10936 10937Fixed a problem with the SizeOf operator when used with Package and 10938Buffer 10939objects. These objects have deferred execution for some arguments, and 10940the 10941execution is now completed before the SizeOf is executed. This problem 10942caused 10943unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 10944BZ 109459558 10946 10947Implemented an enhancement to the interpreter "slack mode". In the 10948absence 10949of 10950an explicit return or an implicitly returned object from the last 10951executed 10952opcode, a control method will now implicitly return an integer of value 0 10953for 10954Microsoft compatibility. (Lin Ming) BZ 392 10955 10956Fixed a problem with the Load operator where an exception was not 10957returned 10958in 10959the case where the table is already loaded. (Lin Ming) BZ 463 10960 10961Implemented support for the use of DDBHandles as an Indexed Reference, as 10962per 10963the ACPI spec. (Lin Ming) BZ 486 10964 10965Implemented support for UserTerm (Method invocation) for the Unload 10966operator 10967as per the ACPI spec. (Lin Ming) BZ 580 10968 10969Fixed a problem with the LoadTable operator where the OemId and 10970OemTableId 10971input strings could cause unexpected failures if they were shorter than 10972the 10973maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 10974 10975Implemented support for UserTerm (Method invocation) for the Unload 10976operator 10977as per the ACPI spec. (Lin Ming) BZ 580 10978 10979Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 10980HEST, 10981IBFT, UEFI, WDAT. Disassembler support is forthcoming. 10982 10983Example Code and Data Size: These are the sizes for the OS-independent 10984acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10985debug version of the code includes the debug output trace mechanism and 10986has 10987a much larger code and data size. 10988 10989 Previous Release: 10990 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 10991 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 10992 Current Release: 10993 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10994 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10995 109962) iASL Compiler/Disassembler and Tools: 10997 10998Implemented support in the disassembler for checksum validation on 10999incoming 11000binary DSDTs and SSDTs. If incorrect, a message is displayed within the 11001table 11002header dump at the start of the disassembly. 11003 11004Implemented additional debugging information in the namespace listing 11005file 11006created during compilation. In addition to the namespace hierarchy, the 11007full 11008pathname to each namespace object is displayed. 11009 11010Fixed a problem with the disassembler where invalid ACPI tables could 11011cause 11012faults or infinite loops. 11013 11014Fixed an unexpected parse error when using the optional "parameter types" 11015list in a control method declaration. (Lin Ming) BZ 397 11016 11017Fixed a problem where two External declarations with the same name did 11018not 11019cause an error (Lin Ming) BZ 509 11020 11021Implemented support for full TermArgs (adding Argx, Localx and method 11022invocation) for the ParameterData parameter to the LoadTable operator. 11023(Lin 11024Ming) BZ 583,587 11025 11026---------------------------------------- 1102719 December 2007. Summary of changes for version 20071219: 11028 110291) ACPI CA Core Subsystem: 11030 11031Implemented full support for deferred execution for the TermArg string 11032arguments for DataTableRegion. This enables forward references and full 11033operand resolution for the three string arguments. Similar to 11034OperationRegion 11035deferred argument execution.) Lin Ming. BZ 430 11036 11037Implemented full argument resolution support for the BankValue argument 11038to 11039BankField. Previously, only constants were supported, now any TermArg may 11040be 11041used. Lin Ming BZ 387, 393 11042 11043Fixed a problem with AcpiGetDevices where the search of a branch of the 11044device tree could be terminated prematurely. In accordance with the ACPI 11045specification, the search down the current branch is terminated if a 11046device 11047is both not present and not functional (instead of just not present.) 11048Yakui 11049Zhao. 11050 11051Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 11052if 11053the underlying AML code changed the GPE enable registers. Now, any 11054unknown 11055incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 11056disabled 11057instead of simply ignored. Rui Zhang. 11058 11059Fixed a problem with Index Fields where the Index register was 11060incorrectly 11061limited to a maximum of 32 bits. Now any size may be used. 11062 11063Fixed a couple memory leaks associated with "implicit return" objects 11064when 11065the AML Interpreter slack mode is enabled. Lin Ming BZ 349 11066 11067Example Code and Data Size: These are the sizes for the OS-independent 11068acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11069debug version of the code includes the debug output trace mechanism and 11070has 11071a much larger code and data size. 11072 11073 Previous Release: 11074 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 11075 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 11076 Current Release: 11077 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 11078 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 11079 11080---------------------------------------- 1108114 November 2007. Summary of changes for version 20071114: 11082 110831) ACPI CA Core Subsystem: 11084 11085Implemented event counters for each of the Fixed Events, the ACPI SCI 11086(interrupt) itself, and control methods executed. Named 11087AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 11088These 11089should be useful for debugging and statistics. 11090 11091Implemented a new external interface, AcpiGetStatistics, to retrieve the 11092contents of the various event counters. Returns the current values for 11093AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 11094AcpiMethodCount. The interface can be expanded in the future if new 11095counters 11096are added. Device drivers should use this interface rather than access 11097the 11098counters directly. 11099 11100Fixed a problem with the FromBCD and ToBCD operators. With some 11101compilers, 11102the ShortDivide function worked incorrectly, causing problems with the 11103BCD 11104functions with large input values. A truncation from 64-bit to 32-bit 11105inadvertently occurred. Internal BZ 435. Lin Ming 11106 11107Fixed a problem with Index references passed as method arguments. 11108References 11109passed as arguments to control methods were dereferenced immediately 11110(before 11111control was passed to the called method). The references are now 11112correctly 11113passed directly to the called method. BZ 5389. Lin Ming 11114 11115Fixed a problem with CopyObject used in conjunction with the Index 11116operator. 11117The reference was incorrectly dereferenced before the copy. The reference 11118is 11119now correctly copied. BZ 5391. Lin Ming 11120 11121Fixed a problem with Control Method references within Package objects. 11122These 11123references are now correctly generated. This completes the package 11124construction overhaul that began in version 20071019. 11125 11126Example Code and Data Size: These are the sizes for the OS-independent 11127acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11128debug version of the code includes the debug output trace mechanism and 11129has 11130a much larger code and data size. 11131 11132 Previous Release: 11133 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 11134 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 11135 Current Release: 11136 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 11137 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 11138 11139 111402) iASL Compiler/Disassembler and Tools: 11141 11142The AcpiExec utility now installs handlers for all of the predefined 11143Operation Region types. New types supported are: PCI_Config, CMOS, and 11144PCIBARTarget. 11145 11146Fixed a problem with the 64-bit version of AcpiExec where the extended 11147(64- 11148bit) address fields for the DSDT and FACS within the FADT were not being 11149used, causing truncation of the upper 32-bits of these addresses. Lin 11150Ming 11151and Bob Moore 11152 11153---------------------------------------- 1115419 October 2007. Summary of changes for version 20071019: 11155 111561) ACPI CA Core Subsystem: 11157 11158Fixed a problem with the Alias operator when the target of the alias is a 11159named ASL operator that opens a new scope -- Scope, Device, 11160PowerResource, 11161Processor, and ThermalZone. In these cases, any children of the original 11162operator could not be accessed via the alias, potentially causing 11163unexpected 11164AE_NOT_FOUND exceptions. (BZ 9067) 11165 11166Fixed a problem with the Package operator where all named references were 11167created as object references and left otherwise unresolved. According to 11168the 11169ACPI specification, a Package can only contain Data Objects or references 11170to 11171control methods. The implication is that named references to Data Objects 11172(Integer, Buffer, String, Package, BufferField, Field) should be resolved 11173immediately upon package creation. This is the approach taken with this 11174change. References to all other named objects (Methods, Devices, Scopes, 11175etc.) are all now properly created as reference objects. (BZ 5328) 11176 11177Reverted a change to Notify handling that was introduced in version 1117820070508. This version changed the Notify handling from asynchronous to 11179fully synchronous (Device driver Notify handling with respect to the 11180Notify 11181ASL operator). It was found that this change caused more problems than it 11182solved and was removed by most users. 11183 11184Fixed a problem with the Increment and Decrement operators where the type 11185of 11186the target object could be unexpectedly and incorrectly changed. (BZ 353) 11187Lin Ming. 11188 11189Fixed a problem with the Load and LoadTable operators where the table 11190location within the namespace was ignored. Instead, the table was always 11191loaded into the root or current scope. Lin Ming. 11192 11193Fixed a problem with the Load operator when loading a table from a buffer 11194object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 11195 11196Fixed a problem with the Debug object where a store of a DdbHandle 11197reference 11198object to the Debug object could cause a fault. 11199 11200Added a table checksum verification for the Load operator, in the case 11201where 11202the load is from a buffer. (BZ 578). 11203 11204Implemented additional parameter validation for the LoadTable operator. 11205The 11206length of the input strings SignatureString, OemIdString, and OemTableId 11207are 11208now checked for maximum lengths. (BZ 582) Lin Ming. 11209 11210Example Code and Data Size: These are the sizes for the OS-independent 11211acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11212debug version of the code includes the debug output trace mechanism and 11213has 11214a much larger code and data size. 11215 11216 Previous Release: 11217 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 11218 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 11219 Current Release: 11220 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 11221 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 11222 11223 112242) iASL Compiler/Disassembler: 11225 11226Fixed a problem where if a single file was specified and the file did not 11227exist, no error message was emitted. (Introduced with wildcard support in 11228version 20070917.) 11229 11230---------------------------------------- 1123119 September 2007. Summary of changes for version 20070919: 11232 112331) ACPI CA Core Subsystem: 11234 11235Designed and implemented new external interfaces to install and remove 11236handlers for ACPI table-related events. Current events that are defined 11237are 11238LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 11239they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 11240AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 11241 11242Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 11243(acpi_serialized option on Linux) could cause some systems to hang during 11244initialization. (Bob Moore) BZ 8171 11245 11246Fixed a problem where objects of certain types (Device, ThermalZone, 11247Processor, PowerResource) can be not found if they are declared and 11248referenced from within the same control method (Lin Ming) BZ 341 11249 11250Example Code and Data Size: These are the sizes for the OS-independent 11251acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11252debug version of the code includes the debug output trace mechanism and 11253has 11254a much larger code and data size. 11255 11256 Previous Release: 11257 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 11258 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 11259 Current Release: 11260 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 11261 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 11262 11263 112642) iASL Compiler/Disassembler: 11265 11266Implemented support to allow multiple files to be compiled/disassembled 11267in 11268a 11269single invocation. This includes command line wildcard support for both 11270the 11271Windows and Unix versions of the compiler. This feature simplifies the 11272disassembly and compilation of multiple ACPI tables in a single 11273directory. 11274 11275---------------------------------------- 1127608 May 2007. Summary of changes for version 20070508: 11277 112781) ACPI CA Core Subsystem: 11279 11280Implemented a Microsoft compatibility design change for the handling of 11281the 11282Notify AML operator. Previously, notify handlers were dispatched and 11283executed completely asynchronously in a deferred thread. The new design 11284still executes the notify handlers in a different thread, but the 11285original 11286thread that executed the Notify() now waits at a synchronization point 11287for 11288the notify handler to complete. Some machines depend on a synchronous 11289Notify 11290operator in order to operate correctly. 11291 11292Implemented support to allow Package objects to be passed as method 11293arguments to the external AcpiEvaluateObject interface. Previously, this 11294would return the AE_NOT_IMPLEMENTED exception. This feature had not been 11295implemented since there were no reserved control methods that required it 11296until recently. 11297 11298Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 11299that 11300contained invalid non-zero values in reserved fields could cause later 11301failures because these fields have meaning in later revisions of the 11302FADT. 11303For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 11304fields 11305are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 11306 11307Fixed a problem where the Global Lock handle was not properly updated if 11308a 11309thread that acquired the Global Lock via executing AML code then 11310attempted 11311to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 11312Joe 11313Liu. 11314 11315Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 11316could be corrupted if the interrupt being removed was at the head of the 11317list. Reported by Linn Crosetto. 11318 11319Example Code and Data Size: These are the sizes for the OS-independent 11320acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11321debug version of the code includes the debug output trace mechanism and 11322has 11323a much larger code and data size. 11324 11325 Previous Release: 11326 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11327 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 11328 Current Release: 11329 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 11330 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 11331 11332---------------------------------------- 1133320 March 2007. Summary of changes for version 20070320: 11334 113351) ACPI CA Core Subsystem: 11336 11337Implemented a change to the order of interpretation and evaluation of AML 11338operand objects within the AML interpreter. The interpreter now evaluates 11339operands in the order that they appear in the AML stream (and the 11340corresponding ASL code), instead of in the reverse order (after the 11341entire 11342operand list has been parsed). The previous behavior caused several 11343subtle 11344incompatibilities with the Microsoft AML interpreter as well as being 11345somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 11346 11347Implemented a change to the ACPI Global Lock support. All interfaces to 11348the 11349global lock now allow the same thread to acquire the lock multiple times. 11350This affects the AcpiAcquireGlobalLock external interface to the global 11351lock 11352as well as the internal use of the global lock to support AML fields -- a 11353control method that is holding the global lock can now simultaneously 11354access 11355AML fields that require global lock protection. Previously, in both 11356cases, 11357this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 11358to 11359AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 11360Controller. There is no change to the behavior of the AML Acquire 11361operator, 11362as this can already be used to acquire a mutex multiple times by the same 11363thread. BZ 8066. With assistance from Alexey Starikovskiy. 11364 11365Fixed a problem where invalid objects could be referenced in the AML 11366Interpreter after error conditions. During operand evaluation, ensure 11367that 11368the internal "Return Object" field is cleared on error and only valid 11369pointers are stored there. Caused occasional access to deleted objects 11370that 11371resulted in "large reference count" warning messages. Valery Podrezov. 11372 11373Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 11374on 11375deeply nested control method invocations. BZ 7873, local BZ 487. Valery 11376Podrezov. 11377 11378Fixed an internal problem with the handling of result objects on the 11379interpreter result stack. BZ 7872. Valery Podrezov. 11380 11381Removed obsolete code that handled the case where AML_NAME_OP is the 11382target 11383of a reference (Reference.Opcode). This code was no longer necessary. BZ 113847874. Valery Podrezov. 11385 11386Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 11387was 11388a 11389remnant from the previously discontinued 16-bit support. 11390 11391Example Code and Data Size: These are the sizes for the OS-independent 11392acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11393debug version of the code includes the debug output trace mechanism and 11394has 11395a much larger code and data size. 11396 11397 Previous Release: 11398 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11399 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11400 Current Release: 11401 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11402 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 11403 11404---------------------------------------- 1140526 January 2007. Summary of changes for version 20070126: 11406 114071) ACPI CA Core Subsystem: 11408 11409Added the 2007 copyright to all module headers and signons. This affects 11410virtually every file in the ACPICA core subsystem, the iASL compiler, and 11411the utilities. 11412 11413Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 11414during a table load. A bad pointer was passed in the case where the DSDT 11415is 11416overridden, causing a fault in this case. 11417 11418Example Code and Data Size: These are the sizes for the OS-independent 11419acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11420debug version of the code includes the debug output trace mechanism and 11421has 11422a much larger code and data size. 11423 11424 Previous Release: 11425 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11426 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11427 Current Release: 11428 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11429 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11430 11431---------------------------------------- 1143215 December 2006. Summary of changes for version 20061215: 11433 114341) ACPI CA Core Subsystem: 11435 11436Support for 16-bit ACPICA has been completely removed since it is no 11437longer 11438necessary and it clutters the code. All 16-bit macros, types, and 11439conditional compiles have been removed, cleaning up and simplifying the 11440code 11441across the entire subsystem. DOS support is no longer needed since the 11442bootable Linux firmware kit is now available. 11443 11444The handler for the Global Lock is now removed during AcpiTerminate to 11445enable a clean subsystem restart, via the implementation of the 11446AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 11447HP) 11448 11449Implemented enhancements to the multithreading support within the 11450debugger 11451to enable improved multithreading debugging and evaluation of the 11452subsystem. 11453(Valery Podrezov) 11454 11455Debugger: Enhanced the Statistics/Memory command to emit the total 11456(maximum) 11457memory used during the execution, as well as the maximum memory consumed 11458by 11459each of the various object types. (Valery Podrezov) 11460 11461Example Code and Data Size: These are the sizes for the OS-independent 11462acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11463debug version of the code includes the debug output trace mechanism and 11464has 11465a much larger code and data size. 11466 11467 Previous Release: 11468 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 11469 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 11470 Current Release: 11471 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11472 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11473 11474 114752) iASL Compiler/Disassembler and Tools: 11476 11477AcpiExec: Implemented a new option (-m) to display full memory use 11478statistics upon subsystem/program termination. (Valery Podrezov) 11479 11480---------------------------------------- 1148109 November 2006. Summary of changes for version 20061109: 11482 114831) ACPI CA Core Subsystem: 11484 11485Optimized the Load ASL operator in the case where the source operand is 11486an 11487operation region. Simply map the operation region memory, instead of 11488performing a bytewise read. (Region must be of type SystemMemory, see 11489below.) 11490 11491Fixed the Load ASL operator for the case where the source operand is a 11492region field. A buffer object is also allowed as the source operand. BZ 11493480 11494 11495Fixed a problem where the Load ASL operator allowed the source operand to 11496be 11497an operation region of any type. It is now restricted to regions of type 11498SystemMemory, as per the ACPI specification. BZ 481 11499 11500Additional cleanup and optimizations for the new Table Manager code. 11501 11502AcpiEnable will now fail if all of the required ACPI tables are not 11503loaded 11504(FADT, FACS, DSDT). BZ 477 11505 11506Added #pragma pack(8/4) to acobject.h to ensure that the structures in 11507this 11508header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 11509manually optimized to be aligned and will not work if it is byte-packed. 11510 11511Example Code and Data Size: These are the sizes for the OS-independent 11512acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11513debug version of the code includes the debug output trace mechanism and 11514has 11515a much larger code and data size. 11516 11517 Previous Release: 11518 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11519 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11520 Current Release: 11521 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 11522 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 11523 11524 115252) iASL Compiler/Disassembler and Tools: 11526 11527Fixed a problem where the presence of the _OSI predefined control method 11528within complex expressions could cause an internal compiler error. 11529 11530AcpiExec: Implemented full region support for multiple address spaces. 11531SpaceId is now part of the REGION object. BZ 429 11532 11533---------------------------------------- 1153411 October 2006. Summary of changes for version 20061011: 11535 115361) ACPI CA Core Subsystem: 11537 11538Completed an AML interpreter performance enhancement for control method 11539execution. Previously a 2-pass parse/execution, control methods are now 11540completely parsed and executed in a single pass. This improves overall 11541interpreter performance by ~25%, reduces code size, and reduces CPU stack 11542use. (Valery Podrezov + interpreter changes in version 20051202 that 11543eliminated namespace loading during the pass one parse.) 11544 11545Implemented _CID support for PCI Root Bridge detection. If the _HID does 11546not 11547match the predefined PCI Root Bridge IDs, the _CID list (if present) is 11548now 11549obtained and also checked for an ID match. 11550 11551Implemented additional support for the PCI _ADR execution: upsearch until 11552a 11553device scope is found before executing _ADR. This allows PCI_Config 11554operation regions to be declared locally within control methods 11555underneath 11556PCI device objects. 11557 11558Fixed a problem with a possible race condition between threads executing 11559AcpiWalkNamespace and the AML interpreter. This condition was removed by 11560modifying AcpiWalkNamespace to (by default) ignore all temporary 11561namespace 11562entries created during any concurrent control method execution. An 11563additional namespace race condition is known to exist between 11564AcpiWalkNamespace and the Load/Unload ASL operators and is still under 11565investigation. 11566 11567Restructured the AML ParseLoop function, breaking it into several 11568subfunctions in order to reduce CPU stack use and improve 11569maintainability. 11570(Mikhail Kouzmich) 11571 11572AcpiGetHandle: Fix for parameter validation to detect invalid 11573combinations 11574of prefix handle and pathname. BZ 478 11575 11576Example Code and Data Size: These are the sizes for the OS-independent 11577acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11578debug version of the code includes the debug output trace mechanism and 11579has 11580a much larger code and data size. 11581 11582 Previous Release: 11583 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11584 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11585 Current Release: 11586 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11587 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11588 115892) iASL Compiler/Disassembler and Tools: 11590 11591Ported the -g option (get local ACPI tables) to the new ACPICA Table 11592Manager 11593to restore original behavior. 11594 11595---------------------------------------- 1159627 September 2006. Summary of changes for version 20060927: 11597 115981) ACPI CA Core Subsystem: 11599 11600Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 11601These functions now use a spinlock for mutual exclusion and the interrupt 11602level indication flag is not needed. 11603 11604Fixed a problem with the Global Lock where the lock could appear to be 11605obtained before it is actually obtained. The global lock semaphore was 11606inadvertently created with one unit instead of zero units. (BZ 464) 11607Fiodor 11608Suietov. 11609 11610Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 11611during 11612a read from a buffer or region field. (BZ 458) Fiodor Suietov. 11613 11614Example Code and Data Size: These are the sizes for the OS-independent 11615acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11616debug version of the code includes the debug output trace mechanism and 11617has 11618a much larger code and data size. 11619 11620 Previous Release: 11621 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11622 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11623 Current Release: 11624 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11625 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11626 11627 116282) iASL Compiler/Disassembler and Tools: 11629 11630Fixed a compilation problem with the pre-defined Resource Descriptor 11631field 11632names where an "object does not exist" error could be incorrectly 11633generated 11634if the parent ResourceTemplate pathname places the template within a 11635different namespace scope than the current scope. (BZ 7212) 11636 11637Fixed a problem where the compiler could hang after syntax errors 11638detected 11639in an ElseIf construct. (BZ 453) 11640 11641Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 11642operator. An incorrect output filename was produced when this parameter 11643was 11644a null string (""). Now, the original input filename is used as the AML 11645output filename, with an ".aml" extension. 11646 11647Implemented a generic batch command mode for the AcpiExec utility 11648(execute 11649any AML debugger command) (Valery Podrezov). 11650 11651---------------------------------------- 1165212 September 2006. Summary of changes for version 20060912: 11653 116541) ACPI CA Core Subsystem: 11655 11656Enhanced the implementation of the "serialized mode" of the interpreter 11657(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 11658specified, instead of creating a serialization semaphore per control 11659method, 11660the interpreter lock is simply no longer released before a blocking 11661operation during control method execution. This effectively makes the AML 11662Interpreter single-threaded. The overhead of a semaphore per-method is 11663eliminated. 11664 11665Fixed a regression where an error was no longer emitted if a control 11666method 11667attempts to create 2 objects of the same name. This once again returns 11668AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 11669that 11670will dynamically serialize the control method to possible prevent future 11671errors. (BZ 440) 11672 11673Integrated a fix for a problem with PCI Express HID detection in the PCI 11674Config Space setup procedure. (BZ 7145) 11675 11676Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 11677AcpiHwInitialize function - the FADT registers are now validated when the 11678table is loaded. 11679 11680Added two new warnings during FADT verification - 1) if the FADT is 11681larger 11682than the largest known FADT version, and 2) if there is a mismatch 11683between 11684a 1168532-bit block address and the 64-bit X counterpart (when both are non- 11686zero.) 11687 11688Example Code and Data Size: These are the sizes for the OS-independent 11689acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11690debug version of the code includes the debug output trace mechanism and 11691has 11692a much larger code and data size. 11693 11694 Previous Release: 11695 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11696 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11697 Current Release: 11698 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11699 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11700 11701 117022) iASL Compiler/Disassembler and Tools: 11703 11704Fixed a problem with the implementation of the Switch() operator where 11705the 11706temporary variable was declared too close to the actual Switch, instead 11707of 11708at method level. This could cause a problem if the Switch() operator is 11709within a while loop, causing an error on the second iteration. (BZ 460) 11710 11711Disassembler - fix for error emitted for unknown type for target of scope 11712operator. Now, ignore it and continue. 11713 11714Disassembly of an FADT now verifies the input FADT and reports any errors 11715found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 11716 11717Disassembly of raw data buffers with byte initialization data now 11718prefixes 11719each output line with the current buffer offset. 11720 11721Disassembly of ASF! table now includes all variable-length data fields at 11722the end of some of the subtables. 11723 11724The disassembler now emits a comment if a buffer appears to be a 11725ResourceTemplate, but cannot be disassembled as such because the EndTag 11726does 11727not appear at the very end of the buffer. 11728 11729AcpiExec - Added the "-t" command line option to enable the serialized 11730mode 11731of the AML interpreter. 11732 11733---------------------------------------- 1173431 August 2006. Summary of changes for version 20060831: 11735 117361) ACPI CA Core Subsystem: 11737 11738Miscellaneous fixes for the Table Manager: 11739- Correctly initialize internal common FADT for all 64-bit "X" fields 11740- Fixed a couple table mapping issues during table load 11741- Fixed a couple alignment issues for IA64 11742- Initialize input array to zero in AcpiInitializeTables 11743- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 11744AcpiGetTableByIndex 11745 11746Change for GPE support: when a "wake" GPE is received, all wake GPEs are 11747now 11748immediately disabled to prevent the waking GPE from firing again and to 11749prevent other wake GPEs from interrupting the wake process. 11750 11751Added the AcpiGpeCount global that tracks the number of processed GPEs, 11752to 11753be used for debugging systems with a large number of ACPI interrupts. 11754 11755Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 11756both the ACPICA headers and the disassembler. 11757 11758Example Code and Data Size: These are the sizes for the OS-independent 11759acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11760debug version of the code includes the debug output trace mechanism and 11761has 11762a much larger code and data size. 11763 11764 Previous Release: 11765 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11766 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11767 Current Release: 11768 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11769 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11770 11771 117722) iASL Compiler/Disassembler and Tools: 11773 11774Disassembler support for the DMAR ACPI table. 11775 11776---------------------------------------- 1177723 August 2006. Summary of changes for version 20060823: 11778 117791) ACPI CA Core Subsystem: 11780 11781The Table Manager component has been completely redesigned and 11782reimplemented. The new design is much simpler, and reduces the overall 11783code 11784and data size of the kernel-resident ACPICA by approximately 5%. Also, it 11785is 11786now possible to obtain the ACPI tables very early during kernel 11787initialization, even before dynamic memory management is initialized. 11788(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 11789 11790Obsolete ACPICA interfaces: 11791 11792- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 11793init 11794time). 11795- AcpiLoadTable: Not needed. 11796- AcpiUnloadTable: Not needed. 11797 11798New ACPICA interfaces: 11799 11800- AcpiInitializeTables: Must be called before the table manager can be 11801used. 11802- AcpiReallocateRootTable: Used to transfer the root table to dynamically 11803allocated memory after it becomes available. 11804- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 11805tables 11806in the RSDT/XSDT. 11807 11808Other ACPICA changes: 11809 11810- AcpiGetTableHeader returns the actual mapped table header, not a copy. 11811Use 11812AcpiOsUnmapMemory to free this mapping. 11813- AcpiGetTable returns the actual mapped table. The mapping is managed 11814internally and must not be deleted by the caller. Use of this interface 11815causes no additional dynamic memory allocation. 11816- AcpiFindRootPointer: Support for physical addressing has been 11817eliminated, 11818it appeared to be unused. 11819- The interface to AcpiOsMapMemory has changed to be consistent with the 11820other allocation interfaces. 11821- The interface to AcpiOsGetRootPointer has changed to eliminate 11822unnecessary 11823parameters. 11824- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 1182564- 11826bit platforms. Was previously 64 bits on all platforms. 11827- The interface to the ACPI Global Lock acquire/release macros have 11828changed 11829slightly since ACPICA no longer keeps a local copy of the FACS with a 11830constructed pointer to the actual global lock. 11831 11832Porting to the new table manager: 11833 11834- AcpiInitializeTables: Must be called once, and can be called anytime 11835during the OS initialization process. It allows the host to specify an 11836area 11837of memory to be used to store the internal version of the RSDT/XSDT (root 11838table). This allows the host to access ACPI tables before memory 11839management 11840is initialized and running. 11841- AcpiReallocateRootTable: Can be called after memory management is 11842running 11843to copy the root table to a dynamically allocated array, freeing up the 11844scratch memory specified in the call to AcpiInitializeTables. 11845- AcpiSubsystemInitialize: This existing interface is independent of the 11846Table Manager, and does not have to be called before the Table Manager 11847can 11848be used, it only must be called before the rest of ACPICA can be used. 11849- ACPI Tables: Some changes have been made to the names and structure of 11850the 11851actbl.h and actbl1.h header files and may require changes to existing 11852code. 11853For example, bitfields have been completely removed because of their lack 11854of 11855portability across C compilers. 11856- Update interfaces to the Global Lock acquire/release macros if local 11857versions are used. (see acwin.h) 11858 11859Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 11860 11861New files: tbfind.c 11862 11863Example Code and Data Size: These are the sizes for the OS-independent 11864acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11865debug version of the code includes the debug output trace mechanism and 11866has 11867a much larger code and data size. 11868 11869 Previous Release: 11870 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11871 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11872 Current Release: 11873 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11874 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11875 11876 118772) iASL Compiler/Disassembler and Tools: 11878 11879No changes for this release. 11880 11881---------------------------------------- 1188221 July 2006. Summary of changes for version 20060721: 11883 118841) ACPI CA Core Subsystem: 11885 11886The full source code for the ASL test suite used to validate the iASL 11887compiler and the ACPICA core subsystem is being released with the ACPICA 11888source for the first time. The source is contained in a separate package 11889and 11890consists of over 1100 files that exercise all ASL/AML operators. The 11891package 11892should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 11893Fiodor 11894Suietov) 11895 11896Completed a new design and implementation for support of the ACPI Global 11897Lock. On the OS side, the global lock is now treated as a standard AML 11898mutex. Previously, multiple OS threads could "acquire" the global lock 11899simultaneously. However, this could cause the BIOS to be starved out of 11900the 11901lock - especially in cases such as the Embedded Controller driver where 11902there is a tight coupling between the OS and the BIOS. 11903 11904Implemented an optimization for the ACPI Global Lock interrupt mechanism. 11905The Global Lock interrupt handler no longer queues the execution of a 11906separate thread to signal the global lock semaphore. Instead, the 11907semaphore 11908is signaled directly from the interrupt handler. 11909 11910Implemented support within the AML interpreter for package objects that 11911contain a larger AML length (package list length) than the package 11912element 11913count. In this case, the length of the package is truncated to match the 11914package element count. Some BIOS code apparently modifies the package 11915length 11916on the fly, and this change supports this behavior. Provides 11917compatibility 11918with the MS AML interpreter. (With assistance from Fiodor Suietov) 11919 11920Implemented a temporary fix for the BankValue parameter of a Bank Field 11921to 11922support all constant values, now including the Zero and One opcodes. 11923Evaluation of this parameter must eventually be converted to a full 11924TermArg 11925evaluation. A not-implemented error is now returned (temporarily) for 11926non- 11927constant values for this parameter. 11928 11929Fixed problem reports (Fiodor Suietov) integrated: 11930- Fix for premature object deletion after CopyObject on Operation Region 11931(BZ 11932350) 11933 11934Example Code and Data Size: These are the sizes for the OS-independent 11935acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11936debug version of the code includes the debug output trace mechanism and 11937has 11938a much larger code and data size. 11939 11940 Previous Release: 11941 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 11942 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 11943 Current Release: 11944 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11945 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11946 11947 119482) iASL Compiler/Disassembler and Tools: 11949 11950No changes for this release. 11951 11952---------------------------------------- 1195307 July 2006. Summary of changes for version 20060707: 11954 119551) ACPI CA Core Subsystem: 11956 11957Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 11958that do not allow the initialization of address pointers within packed 11959structures - even though the hardware itself may support misaligned 11960transfers. Some of the debug data structures are packed by default to 11961minimize size. 11962 11963Added an error message for the case where AcpiOsGetThreadId() returns 11964zero. 11965A non-zero value is required by the core ACPICA code to ensure the proper 11966operation of AML mutexes and recursive control methods. 11967 11968The DSDT is now the only ACPI table that determines whether the AML 11969interpreter is in 32-bit or 64-bit mode. Not really a functional change, 11970but 11971the hooks for per-table 32/64 switching have been removed from the code. 11972A 11973clarification to the ACPI specification is forthcoming in ACPI 3.0B. 11974 11975Fixed a possible leak of an OwnerID in the error path of 11976AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 11977deletion to a single place in AcpiTbUninstallTable to correct possible 11978leaks 11979when using the AcpiTbDeleteTablesByType interface (with assistance from 11980Lance Ortiz.) 11981 11982Fixed a problem with Serialized control methods where the semaphore 11983associated with the method could be over-signaled after multiple method 11984invocations. 11985 11986Fixed two issues with the locking of the internal namespace data 11987structure. 11988Both the Unload() operator and AcpiUnloadTable interface now lock the 11989namespace during the namespace deletion associated with the table unload 11990(with assistance from Linn Crosetto.) 11991 11992Fixed problem reports (Valery Podrezov) integrated: 11993- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 11994 11995Fixed problem reports (Fiodor Suietov) integrated: 11996- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 11997- On Address Space handler deletion, needless deactivation call (BZ 374) 11998- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 11999375) 12000- Possible memory leak, Notify sub-objects of Processor, Power, 12001ThermalZone 12002(BZ 376) 12003- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 12004- Minimum Length of RSDT should be validated (BZ 379) 12005- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 12006Handler (BZ (380) 12007- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 12008loaded 12009(BZ 381) 12010 12011Example Code and Data Size: These are the sizes for the OS-independent 12012acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12013debug version of the code includes the debug output trace mechanism and 12014has 12015a much larger code and data size. 12016 12017 Previous Release: 12018 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 12019 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 12020 Current Release: 12021 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 12022 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 12023 12024 120252) iASL Compiler/Disassembler and Tools: 12026 12027Fixed problem reports: 12028Compiler segfault when ASL contains a long (>1024) String declaration (BZ 12029436) 12030 12031---------------------------------------- 1203223 June 2006. Summary of changes for version 20060623: 12033 120341) ACPI CA Core Subsystem: 12035 12036Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 12037allows the type to be customized to the host OS for improved efficiency 12038(since a spinlock is usually a very small object.) 12039 12040Implemented support for "ignored" bits in the ACPI registers. According 12041to 12042the ACPI specification, these bits should be preserved when writing the 12043registers via a read/modify/write cycle. There are 3 bits preserved in 12044this 12045manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 12046 12047Implemented the initial deployment of new OSL mutex interfaces. Since 12048some 12049host operating systems have separate mutex and semaphore objects, this 12050feature was requested. The base code now uses mutexes (and the new mutex 12051interfaces) wherever a binary semaphore was used previously. However, for 12052the current release, the mutex interfaces are defined as macros to map 12053them 12054to the existing semaphore interfaces. Therefore, no OSL changes are 12055required 12056at this time. (See acpiosxf.h) 12057 12058Fixed several problems with the support for the control method SyncLevel 12059parameter. The SyncLevel now works according to the ACPI specification 12060and 12061in concert with the Mutex SyncLevel parameter, since the current 12062SyncLevel 12063is a property of the executing thread. Mutual exclusion for control 12064methods 12065is now implemented with a mutex instead of a semaphore. 12066 12067Fixed three instances of the use of the C shift operator in the bitfield 12068support code (exfldio.c) to avoid the use of a shift value larger than 12069the 12070target data width. The behavior of C compilers is undefined in this case 12071and 12072can cause unpredictable results, and therefore the case must be detected 12073and 12074avoided. (Fiodor Suietov) 12075 12076Added an info message whenever an SSDT or OEM table is loaded dynamically 12077via the Load() or LoadTable() ASL operators. This should improve 12078debugging 12079capability since it will show exactly what tables have been loaded 12080(beyond 12081the tables present in the RSDT/XSDT.) 12082 12083Example Code and Data Size: These are the sizes for the OS-independent 12084acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12085debug version of the code includes the debug output trace mechanism and 12086has 12087a much larger code and data size. 12088 12089 Previous Release: 12090 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 12091 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 12092 Current Release: 12093 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 12094 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 12095 12096 120972) iASL Compiler/Disassembler and Tools: 12098 12099No changes for this release. 12100 12101---------------------------------------- 1210208 June 2006. Summary of changes for version 20060608: 12103 121041) ACPI CA Core Subsystem: 12105 12106Converted the locking mutex used for the ACPI hardware to a spinlock. 12107This 12108change should eliminate all problems caused by attempting to acquire a 12109semaphore at interrupt level, and it means that all ACPICA external 12110interfaces that directly access the ACPI hardware can be safely called 12111from 12112interrupt level. OSL code that implements the semaphore interfaces should 12113be 12114able to eliminate any workarounds for being called at interrupt level. 12115 12116Fixed a regression introduced in 20060526 where the ACPI device 12117initialization could be prematurely aborted with an AE_NOT_FOUND if a 12118device 12119did not have an optional _INI method. 12120 12121Fixed an IndexField issue where a write to the Data Register should be 12122limited in size to the AccessSize (width) of the IndexField itself. (BZ 12123433, 12124Fiodor Suietov) 12125 12126Fixed problem reports (Valery Podrezov) integrated: 12127- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 12128 12129Fixed problem reports (Fiodor Suietov) integrated: 12130- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 12131 12132Removed four global mutexes that were obsolete and were no longer being 12133used. 12134 12135Example Code and Data Size: These are the sizes for the OS-independent 12136acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12137debug version of the code includes the debug output trace mechanism and 12138has 12139a much larger code and data size. 12140 12141 Previous Release: 12142 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 12143 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 12144 Current Release: 12145 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 12146 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 12147 12148 121492) iASL Compiler/Disassembler and Tools: 12150 12151Fixed a fault when using -g option (get tables from registry) on Windows 12152machines. 12153 12154Fixed problem reports integrated: 12155- Generate error if CreateField NumBits parameter is zero. (BZ 405) 12156- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 12157Suietov) 12158- Global table revision override (-r) is ignored (BZ 413) 12159 12160---------------------------------------- 1216126 May 2006. Summary of changes for version 20060526: 12162 121631) ACPI CA Core Subsystem: 12164 12165Restructured, flattened, and simplified the internal interfaces for 12166namespace object evaluation - resulting in smaller code, less CPU stack 12167use, 12168and fewer interfaces. (With assistance from Mikhail Kouzmich) 12169 12170Fixed a problem with the CopyObject operator where the first parameter 12171was 12172not typed correctly for the parser, interpreter, compiler, and 12173disassembler. 12174Caused various errors and unexpected behavior. 12175 12176Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 12177produced incorrect results with some C compilers. Since the behavior of C 12178compilers when the shift value is larger than the datatype width is 12179apparently not well defined, the interpreter now detects this condition 12180and 12181simply returns zero as expected in all such cases. (BZ 395) 12182 12183Fixed problem reports (Valery Podrezov) integrated: 12184- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 12185- Allow interpreter to handle nested method declarations (BZ 5361) 12186 12187Fixed problem reports (Fiodor Suietov) integrated: 12188- AcpiTerminate doesn't free debug memory allocation list objects (BZ 12189355) 12190- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 12191356) 12192- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 12193- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 12194- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 12195- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 12196- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 12197- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 12198- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 12199365) 12200- Status of the Global Initialization Handler call not used (BZ 366) 12201- Incorrect object parameter to Global Initialization Handler (BZ 367) 12202 12203Example Code and Data Size: These are the sizes for the OS-independent 12204acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12205debug version of the code includes the debug output trace mechanism and 12206has 12207a much larger code and data size. 12208 12209 Previous Release: 12210 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 12211 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 12212 Current Release: 12213 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 12214 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 12215 12216 122172) iASL Compiler/Disassembler and Tools: 12218 12219Modified the parser to allow the names IO, DMA, and IRQ to be used as 12220namespace identifiers with no collision with existing resource descriptor 12221macro names. This provides compatibility with other ASL compilers and is 12222most useful for disassembly/recompilation of existing tables without 12223parse 12224errors. (With assistance from Thomas Renninger) 12225 12226Disassembler: fixed an incorrect disassembly problem with the 12227DataTableRegion and CopyObject operators. Fixed a possible fault during 12228disassembly of some Alias operators. 12229 12230---------------------------------------- 1223112 May 2006. Summary of changes for version 20060512: 12232 122331) ACPI CA Core Subsystem: 12234 12235Replaced the AcpiOsQueueForExecution interface with a new interface named 12236AcpiOsExecute. The major difference is that the new interface does not 12237have 12238a Priority parameter, this appeared to be useless and has been replaced 12239by 12240a 12241Type parameter. The Type tells the host what type of execution is being 12242requested, such as global lock handler, notify handler, GPE handler, etc. 12243This allows the host to queue and execute the request as appropriate for 12244the 12245request type, possibly using different work queues and different 12246priorities 12247for the various request types. This enables fixes for multithreading 12248deadlock problems such as BZ #5534, and will require changes to all 12249existing 12250OS interface layers. (Alexey Starikovskiy and Bob Moore) 12251 12252Fixed a possible memory leak associated with the support for the so- 12253called 12254"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 12255Suietov) 12256 12257Fixed a problem with the Load() operator where a table load from an 12258operation region could overwrite an internal table buffer by up to 7 12259bytes 12260and cause alignment faults on IPF systems. (With assistance from Luming 12261Yu) 12262 12263Example Code and Data Size: These are the sizes for the OS-independent 12264acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12265debug version of the code includes the debug output trace mechanism and 12266has 12267a much larger code and data size. 12268 12269 Previous Release: 12270 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 12271 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 12272 Current Release: 12273 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 12274 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 12275 12276 12277 122782) iASL Compiler/Disassembler and Tools: 12279 12280Disassembler: Implemented support to cross reference the internal 12281namespace 12282and automatically generate ASL External() statements for symbols not 12283defined 12284within the current table being disassembled. This will simplify the 12285disassembly and recompilation of interdependent tables such as SSDTs 12286since 12287these statements will no longer have to be added manually. 12288 12289Disassembler: Implemented experimental support to automatically detect 12290invocations of external control methods and generate appropriate 12291External() 12292statements. This is problematic because the AML cannot be correctly 12293parsed 12294until the number of arguments for each control method is known. 12295Currently, 12296standalone method invocations and invocations as the source operand of a 12297Store() statement are supported. 12298 12299Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 12300LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 12301LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 12302more readable and likely closer to the original ASL source. 12303 12304---------------------------------------- 1230521 April 2006. Summary of changes for version 20060421: 12306 123071) ACPI CA Core Subsystem: 12308 12309Removed a device initialization optimization introduced in 20051216 where 12310the _STA method was not run unless an _INI was also present for the same 12311device. This optimization could cause problems because it could allow 12312_INI 12313methods to be run within a not-present device subtree. (If a not-present 12314device had no _INI, _STA would not be run, the not-present status would 12315not 12316be discovered, and the children of the device would be incorrectly 12317traversed.) 12318 12319Implemented a new _STA optimization where namespace subtrees that do not 12320contain _INI are identified and ignored during device initialization. 12321Selectively running _STA can significantly improve boot time on large 12322machines (with assistance from Len Brown.) 12323 12324Implemented support for the device initialization case where the returned 12325_STA flags indicate a device not-present but functioning. In this case, 12326_INI 12327is not run, but the device children are examined for presence, as per the 12328ACPI specification. 12329 12330Implemented an additional change to the IndexField support in order to 12331conform to MS behavior. The value written to the Index Register is not 12332simply a byte offset, it is a byte offset in units of the access width of 12333the parent Index Field. (Fiodor Suietov) 12334 12335Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 12336interface is called during the creation of all AML operation regions, and 12337allows the host OS to exert control over what addresses it will allow the 12338AML code to access. Operation Regions whose addresses are disallowed will 12339cause a runtime exception when they are actually accessed (will not 12340affect 12341or abort table loading.) See oswinxf or osunixxf for an example 12342implementation. 12343 12344Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 12345interface allows the host OS to match the various "optional" 12346interface/behavior strings for the _OSI predefined control method as 12347appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 12348for an example implementation. 12349 12350Restructured and corrected various problems in the exception handling 12351code 12352paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 12353(with assistance from Takayoshi Kochi.) 12354 12355Modified the Linux source converter to ignore quoted string literals 12356while 12357converting identifiers from mixed to lower case. This will correct 12358problems 12359with the disassembler and other areas where such strings must not be 12360modified. 12361 12362The ACPI_FUNCTION_* macros no longer require quotes around the function 12363name. This allows the Linux source converter to convert the names, now 12364that 12365the converter ignores quoted strings. 12366 12367Example Code and Data Size: These are the sizes for the OS-independent 12368acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12369debug version of the code includes the debug output trace mechanism and 12370has 12371a much larger code and data size. 12372 12373 Previous Release: 12374 12375 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 12376 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 12377 Current Release: 12378 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 12379 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 12380 12381 123822) iASL Compiler/Disassembler and Tools: 12383 12384Implemented 3 new warnings for iASL, and implemented multiple warning 12385levels 12386(w2 flag). 12387 123881) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 12389not 12390WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 12391check for the possible timeout, a warning is issued. 12392 123932) Useless operators: If an ASL operator does not specify an optional 12394target 12395operand and it also does not use the function return value from the 12396operator, a warning is issued since the operator effectively does 12397nothing. 12398 123993) Unreferenced objects: If a namespace object is created, but never 12400referenced, a warning is issued. This is a warning level 2 since there 12401are 12402cases where this is ok, such as when a secondary table is loaded that 12403uses 12404the unreferenced objects. Even so, care is taken to only flag objects 12405that 12406don't look like they will ever be used. For example, the reserved methods 12407(starting with an underscore) are usually not referenced because it is 12408expected that the OS will invoke them. 12409 12410---------------------------------------- 1241131 March 2006. Summary of changes for version 20060331: 12412 124131) ACPI CA Core Subsystem: 12414 12415Implemented header file support for the following additional ACPI tables: 12416ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 12417support, 12418all current and known ACPI tables are now defined in the ACPICA headers 12419and 12420are available for use by device drivers and other software. 12421 12422Implemented support to allow tables that contain ACPI names with invalid 12423characters to be loaded. Previously, this would cause the table load to 12424fail, but since there are several known cases of such tables on existing 12425machines, this change was made to enable ACPI support for them. Also, 12426this 12427matches the behavior of the Microsoft ACPI implementation. 12428 12429Fixed a couple regressions introduced during the memory optimization in 12430the 1243120060317 release. The namespace node definition required additional 12432reorganization and an internal datatype that had been changed to 8-bit 12433was 12434restored to 32-bit. (Valery Podrezov) 12435 12436Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 12437could be passed through to AcpiOsReleaseObject which is unexpected. Such 12438null pointers are now trapped and ignored, matching the behavior of the 12439previous implementation before the deployment of AcpiOsReleaseObject. 12440(Valery Podrezov, Fiodor Suietov) 12441 12442Fixed a memory mapping leak during the deletion of a SystemMemory 12443operation 12444region where a cached memory mapping was not deleted. This became a 12445noticeable problem for operation regions that are defined within 12446frequently 12447used control methods. (Dana Meyers) 12448 12449Reorganized the ACPI table header files into two main files: one for the 12450ACPI tables consumed by the ACPICA core, and another for the 12451miscellaneous 12452ACPI tables that are consumed by the drivers and other software. The 12453various 12454FADT definitions were merged into one common section and three different 12455tables (ACPI 1.0, 1.0+, and 2.0) 12456 12457Example Code and Data Size: These are the sizes for the OS-independent 12458acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12459debug version of the code includes the debug output trace mechanism and 12460has 12461a much larger code and data size. 12462 12463 Previous Release: 12464 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 12465 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 12466 Current Release: 12467 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 12468 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 12469 12470 124712) iASL Compiler/Disassembler and Tools: 12472 12473Disassembler: Implemented support to decode and format all non-AML ACPI 12474tables (tables other than DSDTs and SSDTs.) This includes the new tables 12475added to the ACPICA headers, therefore all current and known ACPI tables 12476are 12477supported. 12478 12479Disassembler: The change to allow ACPI names with invalid characters also 12480enables the disassembly of such tables. Invalid characters within names 12481are 12482changed to '*' to make the name printable; the iASL compiler will still 12483generate an error for such names, however, since this is an invalid ACPI 12484character. 12485 12486Implemented an option for AcpiXtract (-a) to extract all tables found in 12487the 12488input file. The default invocation extracts only the DSDTs and SSDTs. 12489 12490Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 12491makefile for the AcpiXtract utility. 12492 12493---------------------------------------- 1249417 March 2006. Summary of changes for version 20060317: 12495 124961) ACPI CA Core Subsystem: 12497 12498Implemented the use of a cache object for all internal namespace nodes. 12499Since there are about 1000 static nodes in a typical system, this will 12500decrease memory use for cache implementations that minimize per- 12501allocation 12502overhead (such as a slab allocator.) 12503 12504Removed the reference count mechanism for internal namespace nodes, since 12505it 12506was deemed unnecessary. This reduces the size of each namespace node by 12507about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 12508case, 12509and 32 bytes for the 64-bit case. 12510 12511Optimized several internal data structures to reduce object size on 64- 12512bit 12513platforms by packing data within the 64-bit alignment. This includes the 12514frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 12515instances corresponding to the namespace objects. 12516 12517Added two new strings for the predefined _OSI method: "Windows 2001.1 12518SP1" 12519and "Windows 2006". 12520 12521Split the allocation tracking mechanism out to a separate file, from 12522utalloc.c to uttrack.c. This mechanism appears to be only useful for 12523application-level code. Kernels may wish to not include uttrack.c in 12524distributions. 12525 12526Removed all remnants of the obsolete ACPI_REPORT_* macros and the 12527associated 12528code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 12529macros.) 12530 12531Code and Data Size: These are the sizes for the acpica.lib produced by 12532the 12533Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12534ACPI 12535driver or OSPM code. The debug version of the code includes the debug 12536output 12537trace mechanism and has a much larger code and data size. Note that these 12538values will vary depending on the efficiency of the compiler and the 12539compiler options used during generation. 12540 12541 Previous Release: 12542 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12543 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12544 Current Release: 12545 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 12546 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 12547 12548 125492) iASL Compiler/Disassembler and Tools: 12550 12551Implemented an ANSI C version of the acpixtract utility. This version 12552will 12553automatically extract the DSDT and all SSDTs from the input acpidump text 12554file and dump the binary output to separate files. It can also display a 12555summary of the input file including the headers for each table found and 12556will extract any single ACPI table, with any signature. (See 12557source/tools/acpixtract) 12558 12559---------------------------------------- 1256010 March 2006. Summary of changes for version 20060310: 12561 125621) ACPI CA Core Subsystem: 12563 12564Tagged all external interfaces to the subsystem with the new 12565ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 12566assist 12567kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 12568macro. The default definition is NULL. 12569 12570Added the ACPI_THREAD_ID type for the return value from 12571AcpiOsGetThreadId. 12572This allows the host to define this as necessary to simplify kernel 12573integration. The default definition is ACPI_NATIVE_UINT. 12574 12575Fixed two interpreter problems related to error processing, the deletion 12576of 12577objects, and placing invalid pointers onto the internal operator result 12578stack. BZ 6028, 6151 (Valery Podrezov) 12579 12580Increased the reference count threshold where a warning is emitted for 12581large 12582reference counts in order to eliminate unnecessary warnings on systems 12583with 12584large namespaces (especially 64-bit.) Increased the value from 0x400 to 125850x800. 12586 12587Due to universal disagreement as to the meaning of the 'c' in the 12588calloc() 12589function, the ACPI_MEM_CALLOCATE macro has been renamed to 12590ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 12591ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 12592ACPI_FREE. 12593 12594Code and Data Size: These are the sizes for the acpica.lib produced by 12595the 12596Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12597ACPI 12598driver or OSPM code. The debug version of the code includes the debug 12599output 12600trace mechanism and has a much larger code and data size. Note that these 12601values will vary depending on the efficiency of the compiler and the 12602compiler options used during generation. 12603 12604 Previous Release: 12605 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12606 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12607 Current Release: 12608 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12609 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12610 12611 126122) iASL Compiler/Disassembler: 12613 12614Disassembler: implemented support for symbolic resource descriptor 12615references. If a CreateXxxxField operator references a fixed offset 12616within 12617a 12618resource descriptor, a name is assigned to the descriptor and the offset 12619is 12620translated to the appropriate resource tag and pathname. The addition of 12621this support brings the disassembled code very close to the original ASL 12622source code and helps eliminate run-time errors when the disassembled 12623code 12624is modified (and recompiled) in such a way as to invalidate the original 12625fixed offsets. 12626 12627Implemented support for a Descriptor Name as the last parameter to the 12628ASL 12629Register() macro. This parameter was inadvertently left out of the ACPI 12630specification, and will be added for ACPI 3.0b. 12631 12632Fixed a problem where the use of the "_OSI" string (versus the full path 12633"\_OSI") caused an internal compiler error. ("No back ptr to op") 12634 12635Fixed a problem with the error message that occurs when an invalid string 12636is 12637used for a _HID object (such as one with an embedded asterisk: 12638"*PNP010A".) 12639The correct message is now displayed. 12640 12641---------------------------------------- 1264217 February 2006. Summary of changes for version 20060217: 12643 126441) ACPI CA Core Subsystem: 12645 12646Implemented a change to the IndexField support to match the behavior of 12647the 12648Microsoft AML interpreter. The value written to the Index register is now 12649a 12650byte offset, no longer an index based upon the width of the Data 12651register. 12652This should fix IndexField problems seen on some machines where the Data 12653register is not exactly one byte wide. The ACPI specification will be 12654clarified on this point. 12655 12656Fixed a problem where several resource descriptor types could overrun the 12657internal descriptor buffer due to size miscalculation: VendorShort, 12658VendorLong, and Interrupt. This was noticed on IA64 machines, but could 12659affect all platforms. 12660 12661Fixed a problem where individual resource descriptors were misaligned 12662within 12663the internal buffer, causing alignment faults on IA64 platforms. 12664 12665Code and Data Size: These are the sizes for the acpica.lib produced by 12666the 12667Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12668ACPI 12669driver or OSPM code. The debug version of the code includes the debug 12670output 12671trace mechanism and has a much larger code and data size. Note that these 12672values will vary depending on the efficiency of the compiler and the 12673compiler options used during generation. 12674 12675 Previous Release: 12676 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12677 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12678 Current Release: 12679 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12680 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12681 12682 126832) iASL Compiler/Disassembler: 12684 12685Implemented support for new reserved names: _WDG and _WED are Microsoft 12686extensions for Windows Instrumentation Management, _TDL is a new ACPI- 12687defined method (Throttling Depth Limit.) 12688 12689Fixed a problem where a zero-length VendorShort or VendorLong resource 12690descriptor was incorrectly emitted as a descriptor of length one. 12691 12692---------------------------------------- 1269310 February 2006. Summary of changes for version 20060210: 12694 126951) ACPI CA Core Subsystem: 12696 12697Removed a couple of extraneous ACPI_ERROR messages that appeared during 12698normal execution. These became apparent after the conversion from 12699ACPI_DEBUG_PRINT. 12700 12701Fixed a problem where the CreateField operator could hang if the BitIndex 12702or 12703NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 12704 12705Fixed a problem where a DeRefOf operation on a buffer object incorrectly 12706failed with an exception. This also fixes a couple of related RefOf and 12707DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 12708 12709Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 12710of 12711AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 12712BZ 127135480) 12714 12715Implemented a memory cleanup at the end of the execution of each 12716iteration 12717of an AML While() loop, preventing the accumulation of outstanding 12718objects. 12719(Valery Podrezov, BZ 5427) 12720 12721Eliminated a chunk of duplicate code in the object resolution code. 12722(Valery 12723Podrezov, BZ 5336) 12724 12725Fixed several warnings during the 64-bit code generation. 12726 12727The AcpiSrc source code conversion tool now inserts one line of 12728whitespace 12729after an if() statement that is followed immediately by a comment, 12730improving 12731readability of the Linux code. 12732 12733Code and Data Size: The current and previous library sizes for the core 12734subsystem are shown below. These are the code and data sizes for the 12735acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12736These 12737values do not include any ACPI driver or OSPM code. The debug version of 12738the 12739code includes the debug output trace mechanism and has a much larger code 12740and data size. Note that these values will vary depending on the 12741efficiency 12742of the compiler and the compiler options used during generation. 12743 12744 Previous Release: 12745 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12746 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12747 Current Release: 12748 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12749 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12750 12751 127522) iASL Compiler/Disassembler: 12753 12754Fixed a problem with the disassembly of a BankField operator with a 12755complex 12756expression for the BankValue parameter. 12757 12758---------------------------------------- 1275927 January 2006. Summary of changes for version 20060127: 12760 127611) ACPI CA Core Subsystem: 12762 12763Implemented support in the Resource Manager to allow unresolved 12764namestring 12765references within resource package objects for the _PRT method. This 12766support 12767is in addition to the previously implemented unresolved reference support 12768within the AML parser. If the interpreter slack mode is enabled, these 12769unresolved references will be passed through to the caller as a NULL 12770package 12771entry. 12772 12773Implemented and deployed new macros and functions for error and warning 12774messages across the subsystem. These macros are simpler and generate less 12775code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 12776ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 12777macros remain defined to allow ACPI drivers time to migrate to the new 12778macros. 12779 12780Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 12781the 12782Acquire/Release Lock OSL interfaces. 12783 12784Fixed a problem where Alias ASL operators are sometimes not correctly 12785resolved, in both the interpreter and the iASL compiler. 12786 12787Fixed several problems with the implementation of the 12788ConcatenateResTemplate 12789ASL operator. As per the ACPI specification, zero length buffers are now 12790treated as a single EndTag. One-length buffers always cause a fatal 12791exception. Non-zero length buffers that do not end with a full 2-byte 12792EndTag 12793cause a fatal exception. 12794 12795Fixed a possible structure overwrite in the AcpiGetObjectInfo external 12796interface. (With assistance from Thomas Renninger) 12797 12798Code and Data Size: The current and previous library sizes for the core 12799subsystem are shown below. These are the code and data sizes for the 12800acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12801These 12802values do not include any ACPI driver or OSPM code. The debug version of 12803the 12804code includes the debug output trace mechanism and has a much larger code 12805and data size. Note that these values will vary depending on the 12806efficiency 12807of the compiler and the compiler options used during generation. 12808 12809 Previous Release: 12810 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12811 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12812 Current Release: 12813 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12814 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12815 12816 128172) iASL Compiler/Disassembler: 12818 12819Fixed an internal error that was generated for any forward references to 12820ASL 12821Alias objects. 12822 12823---------------------------------------- 1282413 January 2006. Summary of changes for version 20060113: 12825 128261) ACPI CA Core Subsystem: 12827 12828Added 2006 copyright to all module headers and signons. This affects 12829virtually every file in the ACPICA core subsystem, iASL compiler, and the 12830utilities. 12831 12832Enhanced the ACPICA error reporting in order to simplify user migration 12833to 12834the non-debug version of ACPICA. Replaced all instances of the 12835ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 12836debug 12837levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 12838respectively. This preserves all error and warning messages in the non- 12839debug 12840version of the ACPICA code (this has been referred to as the "debug lite" 12841option.) Over 200 cases were converted to create a total of over 380 12842error/warning messages across the ACPICA code. This increases the code 12843and 12844data size of the default non-debug version of the code somewhat (about 1284513K), 12846but all error/warning reporting may be disabled if desired (and code 12847eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 12848configuration option. The size of the debug version of ACPICA remains 12849about 12850the same. 12851 12852Fixed a memory leak within the AML Debugger "Set" command. One object was 12853not properly deleted for every successful invocation of the command. 12854 12855Code and Data Size: The current and previous library sizes for the core 12856subsystem are shown below. These are the code and data sizes for the 12857acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12858These 12859values do not include any ACPI driver or OSPM code. The debug version of 12860the 12861code includes the debug output trace mechanism and has a much larger code 12862and data size. Note that these values will vary depending on the 12863efficiency 12864of the compiler and the compiler options used during generation. 12865 12866 Previous Release: 12867 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12868 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12869 Current Release: 12870 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12871 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12872 12873 128742) iASL Compiler/Disassembler: 12875 12876The compiler now officially supports the ACPI 3.0a specification that was 12877released on December 30, 2005. (Specification is available at 12878www.acpi.info) 12879 12880---------------------------------------- 1288116 December 2005. Summary of changes for version 20051216: 12882 128831) ACPI CA Core Subsystem: 12884 12885Implemented optional support to allow unresolved names within ASL Package 12886objects. A null object is inserted in the package when a named reference 12887cannot be located in the current namespace. Enabled via the interpreter 12888slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 12889machines 12890that contain such code. 12891 12892Implemented an optimization to the initialization sequence that can 12893improve 12894boot time. During ACPI device initialization, the _STA method is now run 12895if 12896and only if the _INI method exists. The _STA method is used to determine 12897if 12898the device is present; An _INI can only be run if _STA returns present, 12899but 12900it is a waste of time to run the _STA method if the _INI does not exist. 12901(Prototype and assistance from Dong Wei) 12902 12903Implemented use of the C99 uintptr_t for the pointer casting macros if it 12904is 12905available in the current compiler. Otherwise, the default (void *) cast 12906is 12907used as before. 12908 12909Fixed some possible memory leaks found within the execution path of the 12910Break, Continue, If, and CreateField operators. (Valery Podrezov) 12911 12912Fixed a problem introduced in the 20051202 release where an exception is 12913generated during method execution if a control method attempts to declare 12914another method. 12915 12916Moved resource descriptor string constants that are used by both the AML 12917disassembler and AML debugger to the common utilities directory so that 12918these components are independent. 12919 12920Implemented support in the AcpiExec utility (-e switch) to globally 12921ignore 12922exceptions during control method execution (method is not aborted.) 12923 12924Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 12925generation. 12926 12927Code and Data Size: The current and previous library sizes for the core 12928subsystem are shown below. These are the code and data sizes for the 12929acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12930These 12931values do not include any ACPI driver or OSPM code. The debug version of 12932the 12933code includes the debug output trace mechanism and has a much larger code 12934and data size. Note that these values will vary depending on the 12935efficiency 12936of the compiler and the compiler options used during generation. 12937 12938 Previous Release: 12939 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12940 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12941 Current Release: 12942 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12943 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12944 12945 129462) iASL Compiler/Disassembler: 12947 12948Fixed a problem where a CPU stack overflow fault could occur if a 12949recursive 12950method call was made from within a Return statement. 12951 12952---------------------------------------- 1295302 December 2005. Summary of changes for version 20051202: 12954 129551) ACPI CA Core Subsystem: 12956 12957Modified the parsing of control methods to no longer create namespace 12958objects during the first pass of the parse. Objects are now created only 12959during the execute phase, at the moment the namespace creation operator 12960is 12961encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 12962This 12963should eliminate ALREADY_EXISTS exceptions seen on some machines where 12964reentrant control methods are protected by an AML mutex. The mutex will 12965now 12966correctly block multiple threads from attempting to create the same 12967object 12968more than once. 12969 12970Increased the number of available Owner Ids for namespace object tracking 12971from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 12972on 12973some machines with a large number of ACPI tables (either static or 12974dynamic). 12975 12976Fixed a problem with the AcpiExec utility where a fault could occur when 12977the 12978-b switch (batch mode) is used. 12979 12980Enhanced the namespace dump routine to output the owner ID for each 12981namespace object. 12982 12983Code and Data Size: The current and previous library sizes for the core 12984subsystem are shown below. These are the code and data sizes for the 12985acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12986These 12987values do not include any ACPI driver or OSPM code. The debug version of 12988the 12989code includes the debug output trace mechanism and has a much larger code 12990and data size. Note that these values will vary depending on the 12991efficiency 12992of the compiler and the compiler options used during generation. 12993 12994 Previous Release: 12995 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12996 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12997 Current Release: 12998 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12999 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 13000 13001 130022) iASL Compiler/Disassembler: 13003 13004Fixed a parse error during compilation of certain Switch/Case constructs. 13005To 13006simplify the parse, the grammar now allows for multiple Default 13007statements 13008and this error is now detected and flagged during the analysis phase. 13009 13010Disassembler: The disassembly now includes the contents of the original 13011table header within a comment at the start of the file. This includes the 13012name and version of the original ASL compiler. 13013 13014---------------------------------------- 1301517 November 2005. Summary of changes for version 20051117: 13016 130171) ACPI CA Core Subsystem: 13018 13019Fixed a problem in the AML parser where the method thread count could be 13020decremented below zero if any errors occurred during the method parse 13021phase. 13022This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 13023machines. 13024This also fixed a related regression with the mechanism that detects and 13025corrects methods that cannot properly handle reentrancy (related to the 13026deployment of the new OwnerId mechanism.) 13027 13028Eliminated the pre-parsing of control methods (to detect errors) during 13029table load. Related to the problem above, this was causing unwind issues 13030if 13031any errors occurred during the parse, and it seemed to be overkill. A 13032table 13033load should not be aborted if there are problems with any single control 13034method, thus rendering this feature rather pointless. 13035 13036Fixed a problem with the new table-driven resource manager where an 13037internal 13038buffer overflow could occur for small resource templates. 13039 13040Implemented a new external interface, AcpiGetVendorResource. This 13041interface 13042will find and return a vendor-defined resource descriptor within a _CRS 13043or 13044_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 13045Helgaas. 13046 13047Removed the length limit (200) on string objects as per the upcoming ACPI 130483.0A specification. This affects the following areas of the interpreter: 130491) 13050any implicit conversion of a Buffer to a String, 2) a String object 13051result 13052of the ASL Concatenate operator, 3) the String object result of the ASL 13053ToString operator. 13054 13055Fixed a problem in the Windows OS interface layer (OSL) where a 13056WAIT_FOREVER 13057on a semaphore object would incorrectly timeout. This allows the 13058multithreading features of the AcpiExec utility to work properly under 13059Windows. 13060 13061Updated the Linux makefiles for the iASL compiler and AcpiExec to include 13062the recently added file named "utresrc.c". 13063 13064Code and Data Size: The current and previous library sizes for the core 13065subsystem are shown below. These are the code and data sizes for the 13066acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13067These 13068values do not include any ACPI driver or OSPM code. The debug version of 13069the 13070code includes the debug output trace mechanism and has a much larger code 13071and data size. Note that these values will vary depending on the 13072efficiency 13073of the compiler and the compiler options used during generation. 13074 13075 Previous Release: 13076 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 13077 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 13078 Current Release: 13079 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 13080 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 13081 13082 130832) iASL Compiler/Disassembler: 13084 13085Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 13086specification. For the iASL compiler, this means that string literals 13087within 13088the source ASL can be of any length. 13089 13090Enhanced the listing output to dump the AML code for resource descriptors 13091immediately after the ASL code for each descriptor, instead of in a block 13092at 13093the end of the entire resource template. 13094 13095Enhanced the compiler debug output to dump the entire original parse tree 13096constructed during the parse phase, before any transforms are applied to 13097the 13098tree. The transformed tree is dumped also. 13099 13100---------------------------------------- 1310102 November 2005. Summary of changes for version 20051102: 13102 131031) ACPI CA Core Subsystem: 13104 13105Modified the subsystem initialization sequence to improve GPE support. 13106The 13107GPE initialization has been split into two parts in order to defer 13108execution 13109of the _PRW methods (Power Resources for Wake) until after the hardware 13110is 13111fully initialized and the SCI handler is installed. This allows the _PRW 13112methods to access fields protected by the Global Lock. This will fix 13113systems 13114where a NO_GLOBAL_LOCK exception has been seen during initialization. 13115 13116Converted the ACPI internal object disassemble and display code within 13117the 13118AML debugger to fully table-driven operation, reducing code size and 13119increasing maintainability. 13120 13121Fixed a regression with the ConcatenateResTemplate() ASL operator 13122introduced 13123in the 20051021 release. 13124 13125Implemented support for "local" internal ACPI object types within the 13126debugger "Object" command and the AcpiWalkNamespace external interfaces. 13127These local types include RegionFields, BankFields, IndexFields, Alias, 13128and 13129reference objects. 13130 13131Moved common AML resource handling code into a new file, "utresrc.c". 13132This 13133code is shared by both the Resource Manager and the AML Debugger. 13134 13135Code and Data Size: The current and previous library sizes for the core 13136subsystem are shown below. These are the code and data sizes for the 13137acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13138These 13139values do not include any ACPI driver or OSPM code. The debug version of 13140the 13141code includes the debug output trace mechanism and has a much larger code 13142and data size. Note that these values will vary depending on the 13143efficiency 13144of the compiler and the compiler options used during generation. 13145 13146 Previous Release: 13147 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 13148 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 13149 Current Release: 13150 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 13151 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 13152 13153 131542) iASL Compiler/Disassembler: 13155 13156Fixed a problem with very large initializer lists (more than 4000 13157elements) 13158for both Buffer and Package objects where the parse stack could overflow. 13159 13160Enhanced the pre-compile source code scan for non-ASCII characters to 13161ignore 13162characters within comment fields. The scan is now always performed and is 13163no 13164longer optional, detecting invalid characters within a source file 13165immediately rather than during the parse phase or later. 13166 13167Enhanced the ASL grammar definition to force early reductions on all 13168list- 13169style grammar elements so that the overall parse stack usage is greatly 13170reduced. This should improve performance and reduce the possibility of 13171parse 13172stack overflow. 13173 13174Eliminated all reduce/reduce conflicts in the iASL parser generation. 13175Also, 13176with the addition of a %expected statement, the compiler generates from 13177source with no warnings. 13178 13179Fixed a possible segment fault in the disassembler if the input filename 13180does not contain a "dot" extension (Thomas Renninger). 13181 13182---------------------------------------- 1318321 October 2005. Summary of changes for version 20051021: 13184 131851) ACPI CA Core Subsystem: 13186 13187Implemented support for the EM64T and other x86-64 processors. This 13188essentially entails recognizing that these processors support non-aligned 13189memory transfers. Previously, all 64-bit processors were assumed to lack 13190hardware support for non-aligned transfers. 13191 13192Completed conversion of the Resource Manager to nearly full table-driven 13193operation. Specifically, the resource conversion code (convert AML to 13194internal format and the reverse) and the debug code to dump internal 13195resource descriptors are fully table-driven, reducing code and data size 13196and 13197improving maintainability. 13198 13199The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 13200word 13201on 64-bit processors instead of a fixed 32-bit word. (With assistance 13202from 13203Alexey Starikovskiy) 13204 13205Implemented support within the resource conversion code for the Type- 13206Specific byte within the various ACPI 3.0 *WordSpace macros. 13207 13208Fixed some issues within the resource conversion code for the type- 13209specific 13210flags for both Memory and I/O address resource descriptors. For Memory, 13211implemented support for the MTP and TTP flags. For I/O, split the TRS and 13212TTP flags into two separate fields. 13213 13214Code and Data Size: The current and previous library sizes for the core 13215subsystem are shown below. These are the code and data sizes for the 13216acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13217These 13218values do not include any ACPI driver or OSPM code. The debug version of 13219the 13220code includes the debug output trace mechanism and has a much larger code 13221and data size. Note that these values will vary depending on the 13222efficiency 13223of the compiler and the compiler options used during generation. 13224 13225 Previous Release: 13226 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 13227 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 13228 Current Release: 13229 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 13230 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 13231 13232 13233 132342) iASL Compiler/Disassembler: 13235 13236Relaxed a compiler restriction that disallowed a ResourceIndex byte if 13237the 13238corresponding ResourceSource string was not also present in a resource 13239descriptor declaration. This restriction caused problems with existing 13240AML/ASL code that includes the Index byte without the string. When such 13241AML 13242was disassembled, it could not be compiled without modification. Further, 13243the modified code created a resource template with a different size than 13244the 13245original, breaking code that used fixed offsets into the resource 13246template 13247buffer. 13248 13249Removed a recent feature of the disassembler to ignore a lone 13250ResourceIndex 13251byte. This byte is now emitted if present so that the exact AML can be 13252reproduced when the disassembled code is recompiled. 13253 13254Improved comments and text alignment for the resource descriptor code 13255emitted by the disassembler. 13256 13257Implemented disassembler support for the ACPI 3.0 AccessSize field within 13258a 13259Register() resource descriptor. 13260 13261---------------------------------------- 1326230 September 2005. Summary of changes for version 20050930: 13263 132641) ACPI CA Core Subsystem: 13265 13266Completed a major overhaul of the Resource Manager code - specifically, 13267optimizations in the area of the AML/internal resource conversion code. 13268The 13269code has been optimized to simplify and eliminate duplicated code, CPU 13270stack 13271use has been decreased by optimizing function parameters and local 13272variables, and naming conventions across the manager have been 13273standardized 13274for clarity and ease of maintenance (this includes function, parameter, 13275variable, and struct/typedef names.) The update may force changes in some 13276driver code, depending on how resources are handled by the host OS. 13277 13278All Resource Manager dispatch and information tables have been moved to a 13279single location for clarity and ease of maintenance. One new file was 13280created, named "rsinfo.c". 13281 13282The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 13283guarantee that the argument is not evaluated twice, making them less 13284prone 13285to macro side-effects. However, since there exists the possibility of 13286additional stack use if a particular compiler cannot optimize them (such 13287as 13288in the debug generation case), the original macros are optionally 13289available. 13290Note that some invocations of the return_VALUE macro may now cause size 13291mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 13292to 13293eliminate these. (From Randy Dunlap) 13294 13295Implemented a new mechanism to enable debug tracing for individual 13296control 13297methods. A new external interface, AcpiDebugTrace, is provided to enable 13298this mechanism. The intent is to allow the host OS to easily enable and 13299disable tracing for problematic control methods. This interface can be 13300easily exposed to a user or debugger interface if desired. See the file 13301psxface.c for details. 13302 13303AcpiUtCallocate will now return a valid pointer if a length of zero is 13304specified - a length of one is used and a warning is issued. This matches 13305the behavior of AcpiUtAllocate. 13306 13307Code and Data Size: The current and previous library sizes for the core 13308subsystem are shown below. These are the code and data sizes for the 13309acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13310These 13311values do not include any ACPI driver or OSPM code. The debug version of 13312the 13313code includes the debug output trace mechanism and has a much larger code 13314and data size. Note that these values will vary depending on the 13315efficiency 13316of the compiler and the compiler options used during generation. 13317 13318 Previous Release: 13319 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 13320 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 13321 Current Release: 13322 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 13323 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 13324 13325 133262) iASL Compiler/Disassembler: 13327 13328A remark is issued if the effective compile-time length of a package or 13329buffer is zero. Previously, this was a warning. 13330 13331---------------------------------------- 1333216 September 2005. Summary of changes for version 20050916: 13333 133341) ACPI CA Core Subsystem: 13335 13336Fixed a problem within the Resource Manager where support for the Generic 13337Register descriptor was not fully implemented. This descriptor is now 13338fully 13339recognized, parsed, disassembled, and displayed. 13340 13341Completely restructured the Resource Manager code to utilize table-driven 13342dispatch and lookup, eliminating many of the large switch() statements. 13343This 13344reduces overall subsystem code size and code complexity. Affects the 13345resource parsing and construction, disassembly, and debug dump output. 13346 13347Cleaned up and restructured the debug dump output for all resource 13348descriptors. Improved readability of the output and reduced code size. 13349 13350Fixed a problem where changes to internal data structures caused the 13351optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 13352 13353Code and Data Size: The current and previous library sizes for the core 13354subsystem are shown below. These are the code and data sizes for the 13355acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13356These 13357values do not include any ACPI driver or OSPM code. The debug version of 13358the 13359code includes the debug output trace mechanism and has a much larger code 13360and data size. Note that these values will vary depending on the 13361efficiency 13362of the compiler and the compiler options used during generation. 13363 13364 Previous Release: 13365 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 13366 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 13367 Current Release: 13368 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 13369 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 13370 13371 133722) iASL Compiler/Disassembler: 13373 13374Updated the disassembler to automatically insert an EndDependentFn() 13375macro 13376into the ASL stream if this macro is missing in the original AML code, 13377simplifying compilation of the resulting ASL module. 13378 13379Fixed a problem in the disassembler where a disassembled ResourceSource 13380string (within a large resource descriptor) was not surrounded by quotes 13381and 13382not followed by a comma, causing errors when the resulting ASL module was 13383compiled. Also, escape sequences within a ResourceSource string are now 13384handled correctly (especially "\\") 13385 13386---------------------------------------- 1338702 September 2005. Summary of changes for version 20050902: 13388 133891) ACPI CA Core Subsystem: 13390 13391Fixed a problem with the internal Owner ID allocation and deallocation 13392mechanisms for control method execution and recursive method invocation. 13393This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 13394messages seen on some systems. Recursive method invocation depth is 13395currently limited to 255. (Alexey Starikovskiy) 13396 13397Completely eliminated all vestiges of support for the "module-level 13398executable code" until this support is fully implemented and debugged. 13399This 13400should eliminate the NO_RETURN_VALUE exceptions seen during table load on 13401some systems that invoke this support. 13402 13403Fixed a problem within the resource manager code where the transaction 13404flags 13405for a 64-bit address descriptor were handled incorrectly in the type- 13406specific flag byte. 13407 13408Consolidated duplicate code within the address descriptor resource 13409manager 13410code, reducing overall subsystem code size. 13411 13412Fixed a fault when using the AML debugger "disassemble" command to 13413disassemble individual control methods. 13414 13415Removed references to the "release_current" directory within the Unix 13416release package. 13417 13418Code and Data Size: The current and previous core subsystem library sizes 13419are shown below. These are the code and data sizes for the acpica.lib 13420produced by the Microsoft Visual C++ 6.0 compiler. These values do not 13421include any ACPI driver or OSPM code. The debug version of the code 13422includes 13423the debug output trace mechanism and has a much larger code and data 13424size. 13425Note that these values will vary depending on the efficiency of the 13426compiler 13427and the compiler options used during generation. 13428 13429 Previous Release: 13430 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13431 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 13432 Current Release: 13433 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 13434 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 13435 13436 134372) iASL Compiler/Disassembler: 13438 13439Implemented an error check for illegal duplicate values in the interrupt 13440and 13441dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 13442Interrupt(). 13443 13444Implemented error checking for the Irq() and IrqNoFlags() macros to 13445detect 13446too many values in the interrupt list (16 max) and invalid values in the 13447list (range 0 - 15) 13448 13449The maximum length string literal within an ASL file is now restricted to 13450200 characters as per the ACPI specification. 13451 13452Fixed a fault when using the -ln option (generate namespace listing). 13453 13454Implemented an error check to determine if a DescriptorName within a 13455resource descriptor has already been used within the current scope. 13456 13457---------------------------------------- 1345815 August 2005. Summary of changes for version 20050815: 13459 134601) ACPI CA Core Subsystem: 13461 13462Implemented a full bytewise compare to determine if a table load request 13463is 13464attempting to load a duplicate table. The compare is performed if the 13465table 13466signatures and table lengths match. This will allow different tables with 13467the same OEM Table ID and revision to be loaded - probably against the 13468ACPI 13469specification, but discovered in the field nonetheless. 13470 13471Added the changes.txt logfile to each of the zipped release packages. 13472 13473Code and Data Size: Current and previous core subsystem library sizes are 13474shown below. These are the code and data sizes for the acpica.lib 13475produced 13476by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13477any ACPI driver or OSPM code. The debug version of the code includes the 13478debug output trace mechanism and has a much larger code and data size. 13479Note 13480that these values will vary depending on the efficiency of the compiler 13481and 13482the compiler options used during generation. 13483 13484 Previous Release: 13485 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13486 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 13487 Current Release: 13488 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13489 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 13490 13491 134922) iASL Compiler/Disassembler: 13493 13494Fixed a problem where incorrect AML code could be generated for Package 13495objects if optimization is disabled (via the -oa switch). 13496 13497Fixed a problem with where incorrect AML code is generated for variable- 13498length packages when the package length is not specified and the number 13499of 13500initializer values is greater than 255. 13501 13502 13503---------------------------------------- 1350429 July 2005. Summary of changes for version 20050729: 13505 135061) ACPI CA Core Subsystem: 13507 13508Implemented support to ignore an attempt to install/load a particular 13509ACPI 13510table more than once. Apparently there exists BIOS code that repeatedly 13511attempts to load the same SSDT upon certain events. With assistance from 13512Venkatesh Pallipadi. 13513 13514Restructured the main interface to the AML parser in order to correctly 13515handle all exceptional conditions. This will prevent leakage of the 13516OwnerId 13517resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 13518some 13519machines. With assistance from Alexey Starikovskiy. 13520 13521Support for "module level code" has been disabled in this version due to 13522a 13523number of issues that have appeared on various machines. The support can 13524be 13525enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 13526compilation. When the issues are fully resolved, the code will be enabled 13527by 13528default again. 13529 13530Modified the internal functions for debug print support to define the 13531FunctionName parameter as a (const char *) for compatibility with 13532compiler 13533built-in macros such as __FUNCTION__, etc. 13534 13535Linted the entire ACPICA source tree for both 32-bit and 64-bit. 13536 13537Implemented support to display an object count summary for the AML 13538Debugger 13539commands Object and Methods. 13540 13541Code and Data Size: Current and previous core subsystem library sizes are 13542shown below. These are the code and data sizes for the acpica.lib 13543produced 13544by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13545any ACPI driver or OSPM code. The debug version of the code includes the 13546debug output trace mechanism and has a much larger code and data size. 13547Note 13548that these values will vary depending on the efficiency of the compiler 13549and 13550the compiler options used during generation. 13551 13552 Previous Release: 13553 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13554 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13555 Current Release: 13556 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13557 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 13558 13559 135602) iASL Compiler/Disassembler: 13561 13562Fixed a regression that appeared in the 20050708 version of the compiler 13563where an error message was inadvertently emitted for invocations of the 13564_OSI 13565reserved control method. 13566 13567---------------------------------------- 1356808 July 2005. Summary of changes for version 20050708: 13569 135701) ACPI CA Core Subsystem: 13571 13572The use of the CPU stack in the debug version of the subsystem has been 13573considerably reduced. Previously, a debug structure was declared in every 13574function that used the debug macros. This structure has been removed in 13575favor of declaring the individual elements as parameters to the debug 13576functions. This reduces the cumulative stack use during nested execution 13577of 13578ACPI function calls at the cost of a small increase in the code size of 13579the 13580debug version of the subsystem. With assistance from Alexey Starikovskiy 13581and 13582Len Brown. 13583 13584Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 13585headers to define a macro that will return the current function name at 13586runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 13587by 13588the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 13589compiler-dependent header, the function name is saved on the CPU stack 13590(one 13591pointer per function.) This mechanism is used because apparently there 13592exists no standard ANSI-C defined macro that that returns the function 13593name. 13594 13595Redesigned and reimplemented the "Owner ID" mechanism used to track 13596namespace objects created/deleted by ACPI tables and control method 13597execution. A bitmap is now used to allocate and free the IDs, thus 13598solving 13599the wraparound problem present in the previous implementation. The size 13600of 13601the namespace node descriptor was reduced by 2 bytes as a result (Alexey 13602Starikovskiy). 13603 13604Removed the UINT32_BIT and UINT16_BIT types that were used for the 13605bitfield 13606flag definitions within the headers for the predefined ACPI tables. These 13607have been replaced by UINT8_BIT in order to increase the code portability 13608of 13609the subsystem. If the use of UINT8 remains a problem, we may be forced to 13610eliminate bitfields entirely because of a lack of portability. 13611 13612Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 13613This 13614is a frequently used function and this improvement increases the 13615performance 13616of the entire subsystem (Alexey Starikovskiy). 13617 13618Fixed several possible memory leaks and the inverse - premature object 13619deletion (Alexey Starikovskiy). 13620 13621Code and Data Size: Current and previous core subsystem library sizes are 13622shown below. These are the code and data sizes for the acpica.lib 13623produced 13624by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13625any ACPI driver or OSPM code. The debug version of the code includes the 13626debug output trace mechanism and has a much larger code and data size. 13627Note 13628that these values will vary depending on the efficiency of the compiler 13629and 13630the compiler options used during generation. 13631 13632 Previous Release: 13633 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13634 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13635 Current Release: 13636 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13637 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13638 13639---------------------------------------- 1364024 June 2005. Summary of changes for version 20050624: 13641 136421) ACPI CA Core Subsystem: 13643 13644Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 13645the host-defined cache object. This allows the OSL implementation to 13646define 13647and type this object in any manner desired, simplifying the OSL 13648implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 13649Linux, and should be defined in the OS-specific header file for other 13650operating systems as required. 13651 13652Changed the interface to AcpiOsAcquireObject to directly return the 13653requested object as the function return (instead of ACPI_STATUS.) This 13654change was made for performance reasons, since this is the purpose of the 13655interface in the first place. AcpiOsAcquireObject is now similar to the 13656AcpiOsAllocate interface. 13657 13658Implemented a new AML debugger command named Businfo. This command 13659displays 13660information about all devices that have an associate _PRT object. The 13661_ADR, 13662_HID, _UID, and _CID are displayed for these devices. 13663 13664Modified the initialization sequence in AcpiInitializeSubsystem to call 13665the 13666OSL interface AcpiOslInitialize first, before any local initialization. 13667This 13668change was required because the global initialization now calls OSL 13669interfaces. 13670 13671Enhanced the Dump command to display the entire contents of Package 13672objects 13673(including all sub-objects and their values.) 13674 13675Restructured the code base to split some files because of size and/or 13676because the code logically belonged in a separate file. New files are 13677listed 13678below. All makefiles and project files included in the ACPI CA release 13679have 13680been updated. 13681 utilities/utcache.c /* Local cache interfaces */ 13682 utilities/utmutex.c /* Local mutex support */ 13683 utilities/utstate.c /* State object support */ 13684 interpreter/parser/psloop.c /* Main AML parse loop */ 13685 13686Code and Data Size: Current and previous core subsystem library sizes are 13687shown below. These are the code and data sizes for the acpica.lib 13688produced 13689by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13690any ACPI driver or OSPM code. The debug version of the code includes the 13691debug output trace mechanism and has a much larger code and data size. 13692Note 13693that these values will vary depending on the efficiency of the compiler 13694and 13695the compiler options used during generation. 13696 13697 Previous Release: 13698 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13699 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13700 Current Release: 13701 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13702 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13703 13704 137052) iASL Compiler/Disassembler: 13706 13707Fixed a regression introduced in version 20050513 where the use of a 13708Package 13709object within a Case() statement caused a compile time exception. The 13710original behavior has been restored (a Match() operator is emitted.) 13711 13712---------------------------------------- 1371317 June 2005. Summary of changes for version 20050617: 13714 137151) ACPI CA Core Subsystem: 13716 13717Moved the object cache operations into the OS interface layer (OSL) to 13718allow 13719the host OS to handle these operations if desired (for example, the Linux 13720OSL will invoke the slab allocator). This support is optional; the 13721compile 13722time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 13723cache 13724code in the ACPI CA core. The new OSL interfaces are shown below. See 13725utalloc.c for an example implementation, and acpiosxf.h for the exact 13726interface definitions. With assistance from Alexey Starikovskiy. 13727 AcpiOsCreateCache 13728 AcpiOsDeleteCache 13729 AcpiOsPurgeCache 13730 AcpiOsAcquireObject 13731 AcpiOsReleaseObject 13732 13733Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 13734return 13735and restore a flags parameter. This fits better with many OS lock models. 13736Note: the current execution state (interrupt handler or not) is no longer 13737passed to these interfaces. If necessary, the OSL must determine this 13738state 13739by itself, a simple and fast operation. With assistance from Alexey 13740Starikovskiy. 13741 13742Fixed a problem in the ACPI table handling where a valid XSDT was assumed 13743present if the revision of the RSDP was 2 or greater. According to the 13744ACPI 13745specification, the XSDT is optional in all cases, and the table manager 13746therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 13747Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 13748contain 13749only the RSDT. 13750 13751Fixed an interpreter problem with the Mid() operator in the case of an 13752input 13753string where the resulting output string is of zero length. It now 13754correctly 13755returns a valid, null terminated string object instead of a string object 13756with a null pointer. 13757 13758Fixed a problem with the control method argument handling to allow a 13759store 13760to an Arg object that already contains an object of type Device. The 13761Device 13762object is now correctly overwritten. Previously, an error was returned. 13763 13764 13765Enhanced the debugger Find command to emit object values in addition to 13766the 13767found object pathnames. The output format is the same as the dump 13768namespace 13769command. 13770 13771Enhanced the debugger Set command. It now has the ability to set the 13772value 13773of any Named integer object in the namespace (Previously, only method 13774locals 13775and args could be set.) 13776 13777Code and Data Size: Current and previous core subsystem library sizes are 13778shown below. These are the code and data sizes for the acpica.lib 13779produced 13780by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13781any ACPI driver or OSPM code. The debug version of the code includes the 13782debug output trace mechanism and has a much larger code and data size. 13783Note 13784that these values will vary depending on the efficiency of the compiler 13785and 13786the compiler options used during generation. 13787 13788 Previous Release: 13789 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13790 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13791 Current Release: 13792 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13793 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13794 13795 137962) iASL Compiler/Disassembler: 13797 13798Fixed a regression in the disassembler where if/else/while constructs 13799were 13800output incorrectly. This problem was introduced in the previous release 13801(20050526). This problem also affected the single-step disassembly in the 13802debugger. 13803 13804Fixed a problem where compiling the reserved _OSI method would randomly 13805(but 13806rarely) produce compile errors. 13807 13808Enhanced the disassembler to emit compilable code in the face of 13809incorrect 13810AML resource descriptors. If the optional ResourceSourceIndex is present, 13811but the ResourceSource is not, do not emit the ResourceSourceIndex in the 13812disassembly. Otherwise, the resulting code cannot be compiled without 13813errors. 13814 13815---------------------------------------- 1381626 May 2005. Summary of changes for version 20050526: 13817 138181) ACPI CA Core Subsystem: 13819 13820Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 13821the module level (not within a control method.) These opcodes are 13822executed 13823exactly once at the time the table is loaded. This type of code was legal 13824up 13825until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 13826in 13827order to provide backwards compatibility with earlier BIOS 13828implementations. 13829This eliminates the "Encountered executable code at module level" warning 13830that was previously generated upon detection of such code. 13831 13832Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 13833inadvertently be generated during the lookup of namespace objects in the 13834second pass parse of ACPI tables and control methods. It appears that 13835this 13836problem could occur during the resolution of forward references to 13837namespace 13838objects. 13839 13840Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 13841corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 13842allows the deadlock detection debug code to be compiled out in the normal 13843case, improving mutex performance (and overall subsystem performance) 13844considerably. 13845 13846Implemented a handful of miscellaneous fixes for possible memory leaks on 13847error conditions and error handling control paths. These fixes were 13848suggested by FreeBSD and the Coverity Prevent source code analysis tool. 13849 13850Added a check for a null RSDT pointer in AcpiGetFirmwareTable 13851(tbxfroot.c) 13852to prevent a fault in this error case. 13853 13854Code and Data Size: Current and previous core subsystem library sizes are 13855shown below. These are the code and data sizes for the acpica.lib 13856produced 13857by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13858any ACPI driver or OSPM code. The debug version of the code includes the 13859debug output trace mechanism and has a much larger code and data size. 13860Note 13861that these values will vary depending on the efficiency of the compiler 13862and 13863the compiler options used during generation. 13864 13865 Previous Release: 13866 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13867 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13868 Current Release: 13869 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13870 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13871 13872 138732) iASL Compiler/Disassembler: 13874 13875Implemented support to allow Type 1 and Type 2 ASL operators to appear at 13876the module level (not within a control method.) These operators will be 13877executed once at the time the table is loaded. This type of code was 13878legal 13879up until the release of ACPI 2.0B (2002) and is now supported by the iASL 13880compiler in order to provide backwards compatibility with earlier BIOS 13881ASL 13882code. 13883 13884The ACPI integer width (specified via the table revision ID or the -r 13885override, 32 or 64 bits) is now used internally during compile-time 13886constant 13887folding to ensure that constants are truncated to 32 bits if necessary. 13888Previously, the revision ID value was only emitted in the AML table 13889header. 13890 13891An error message is now generated for the Mutex and Method operators if 13892the 13893SyncLevel parameter is outside the legal range of 0 through 15. 13894 13895Fixed a problem with the Method operator ParameterTypes list handling 13896(ACPI 138973.0). Previously, more than 2 types or 2 arguments generated a syntax 13898error. 13899The actual underlying implementation of method argument typechecking is 13900still under development, however. 13901 13902---------------------------------------- 1390313 May 2005. Summary of changes for version 20050513: 13904 139051) ACPI CA Core Subsystem: 13906 13907Implemented support for PCI Express root bridges -- added support for 13908device 13909PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 13910 13911The interpreter now automatically truncates incoming 64-bit constants to 1391232 13913bits if currently executing out of a 32-bit ACPI table (Revision < 2). 13914This 13915also affects the iASL compiler constant folding. (Note: as per below, the 13916iASL compiler no longer allows 64-bit constants within 32-bit tables.) 13917 13918Fixed a problem where string and buffer objects with "static" pointers 13919(pointers to initialization data within an ACPI table) were not handled 13920consistently. The internal object copy operation now always copies the 13921data 13922to a newly allocated buffer, regardless of whether the source object is 13923static or not. 13924 13925Fixed a problem with the FromBCD operator where an implicit result 13926conversion was improperly performed while storing the result to the 13927target 13928operand. Since this is an "explicit conversion" operator, the implicit 13929conversion should never be performed on the output. 13930 13931Fixed a problem with the CopyObject operator where a copy to an existing 13932named object did not always completely overwrite the existing object 13933stored 13934at name. Specifically, a buffer-to-buffer copy did not delete the 13935existing 13936buffer. 13937 13938Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 13939and 13940structs for consistency. 13941 13942Code and Data Size: Current and previous core subsystem library sizes are 13943shown below. These are the code and data sizes for the acpica.lib 13944produced 13945by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13946any ACPI driver or OSPM code. The debug version of the code includes the 13947debug output trace mechanism and has a much larger code and data size. 13948Note 13949that these values will vary depending on the efficiency of the compiler 13950and 13951the compiler options used during generation. 13952 13953 Previous Release: 13954 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13955 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13956 Current Release: (Same sizes) 13957 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13958 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13959 13960 139612) iASL Compiler/Disassembler: 13962 13963The compiler now emits a warning if an attempt is made to generate a 64- 13964bit 13965integer constant from within a 32-bit ACPI table (Revision < 2). The 13966integer 13967is truncated to 32 bits. 13968 13969Fixed a problem with large package objects: if the static length of the 13970package is greater than 255, the "variable length package" opcode is 13971emitted. Previously, this caused an error. This requires an update to the 13972ACPI spec, since it currently (incorrectly) states that packages larger 13973than 13974255 elements are not allowed. 13975 13976The disassembler now correctly handles variable length packages and 13977packages 13978larger than 255 elements. 13979 13980---------------------------------------- 1398108 April 2005. Summary of changes for version 20050408: 13982 139831) ACPI CA Core Subsystem: 13984 13985Fixed three cases in the interpreter where an "index" argument to an ASL 13986function was still (internally) 32 bits instead of the required 64 bits. 13987This was the Index argument to the Index, Mid, and Match operators. 13988 13989The "strupr" function is now permanently local (AcpiUtStrupr), since this 13990is 13991not a POSIX-defined function and not present in most kernel-level C 13992libraries. All references to the C library strupr function have been 13993removed 13994from the headers. 13995 13996Completed the deployment of static functions/prototypes. All prototypes 13997with 13998the static attribute have been moved from the headers to the owning C 13999file. 14000 14001Implemented an extract option (-e) for the AcpiBin utility (AML binary 14002utility). This option allows the utility to extract individual ACPI 14003tables 14004from the output of AcpiDmp. It provides the same functionality of the 14005acpixtract.pl perl script without the worry of setting the correct perl 14006options. AcpiBin runs on Windows and has not yet been generated/validated 14007in 14008the Linux/Unix environment (but should be soon). 14009 14010Updated and fixed the table dump option for AcpiBin (-d). This option 14011converts a single ACPI table to a hex/ascii file, similar to the output 14012of 14013AcpiDmp. 14014 14015Code and Data Size: Current and previous core subsystem library sizes are 14016shown below. These are the code and data sizes for the acpica.lib 14017produced 14018by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14019any ACPI driver or OSPM code. The debug version of the code includes the 14020debug output trace mechanism and has a much larger code and data size. 14021Note 14022that these values will vary depending on the efficiency of the compiler 14023and 14024the compiler options used during generation. 14025 14026 Previous Release: 14027 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 14028 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 14029 Current Release: 14030 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 14031 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 14032 14033 140342) iASL Compiler/Disassembler: 14035 14036Disassembler fix: Added a check to ensure that the table length found in 14037the 14038ACPI table header within the input file is not longer than the actual 14039input 14040file size. This indicates some kind of file or table corruption. 14041 14042---------------------------------------- 1404329 March 2005. Summary of changes for version 20050329: 14044 140451) ACPI CA Core Subsystem: 14046 14047An error is now generated if an attempt is made to create a Buffer Field 14048of 14049length zero (A CreateField with a length operand of zero.) 14050 14051The interpreter now issues a warning whenever executable code at the 14052module 14053level is detected during ACPI table load. This will give some idea of the 14054prevalence of this type of code. 14055 14056Implemented support for references to named objects (other than control 14057methods) within package objects. 14058 14059Enhanced package object output for the debug object. Package objects are 14060now 14061completely dumped, showing all elements. 14062 14063Enhanced miscellaneous object output for the debug object. Any object can 14064now be written to the debug object (for example, a device object can be 14065written, and the type of the object will be displayed.) 14066 14067The "static" qualifier has been added to all local functions across both 14068the 14069core subsystem and the iASL compiler. 14070 14071The number of "long" lines (> 80 chars) within the source has been 14072significantly reduced, by about 1/3. 14073 14074Cleaned up all header files to ensure that all CA/iASL functions are 14075prototyped (even static functions) and the formatting is consistent. 14076 14077Two new header files have been added, acopcode.h and acnames.h. 14078 14079Removed several obsolete functions that were no longer used. 14080 14081Code and Data Size: Current and previous core subsystem library sizes are 14082shown below. These are the code and data sizes for the acpica.lib 14083produced 14084by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14085any ACPI driver or OSPM code. The debug version of the code includes the 14086debug output trace mechanism and has a much larger code and data size. 14087Note 14088that these values will vary depending on the efficiency of the compiler 14089and 14090the compiler options used during generation. 14091 14092 Previous Release: 14093 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14094 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 14095 Current Release: 14096 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 14097 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 14098 14099 14100 141012) iASL Compiler/Disassembler: 14102 14103Fixed a problem with the resource descriptor generation/support. For the 14104ResourceSourceIndex and the ResourceSource fields, both must be present, 14105or 14106both must be not present - can't have one without the other. 14107 14108The compiler now returns non-zero from the main procedure if any errors 14109have 14110occurred during the compilation. 14111 14112 14113---------------------------------------- 1411409 March 2005. Summary of changes for version 20050309: 14115 141161) ACPI CA Core Subsystem: 14117 14118The string-to-buffer implicit conversion code has been modified again 14119after 14120a change to the ACPI specification. In order to match the behavior of 14121the 14122other major ACPI implementation, the target buffer is no longer truncated 14123if 14124the source string is smaller than an existing target buffer. This change 14125requires an update to the ACPI spec, and should eliminate the recent 14126AE_AML_BUFFER_LIMIT issues. 14127 14128The "implicit return" support was rewritten to a new algorithm that 14129solves 14130the general case. Rather than attempt to determine when a method is about 14131to 14132exit, the result of every ASL operator is saved momentarily until the 14133very 14134next ASL operator is executed. Therefore, no matter how the method exits, 14135there will always be a saved implicit return value. This feature is only 14136enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 14137eliminate 14138AE_AML_NO_RETURN_VALUE errors when enabled. 14139 14140Implemented implicit conversion support for the predicate (operand) of 14141the 14142If, Else, and While operators. String and Buffer arguments are 14143automatically 14144converted to Integers. 14145 14146Changed the string-to-integer conversion behavior to match the new ACPI 14147errata: "If no integer object exists, a new integer is created. The ASCII 14148string is interpreted as a hexadecimal constant. Each string character is 14149interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 14150with the first character as the most significant digit, and ending with 14151the 14152first non-hexadecimal character or end-of-string." This means that the 14153first 14154non-hex character terminates the conversion and this is the code that was 14155changed. 14156 14157Fixed a problem where the ObjectType operator would fail (fault) when 14158used 14159on an Index of a Package which pointed to a null package element. The 14160operator now properly returns zero (Uninitialized) in this case. 14161 14162Fixed a problem where the While operator used excessive memory by not 14163properly popping the result stack during execution. There was no memory 14164leak 14165after execution, however. (Code provided by Valery Podrezov.) 14166 14167Fixed a problem where references to control methods within Package 14168objects 14169caused the method to be invoked, instead of producing a reference object 14170pointing to the method. 14171 14172Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 14173to 14174improve performance and reduce code size. (Code provided by Alexey 14175Starikovskiy.) 14176 14177Code and Data Size: Current and previous core subsystem library sizes are 14178shown below. These are the code and data sizes for the acpica.lib 14179produced 14180by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14181any ACPI driver or OSPM code. The debug version of the code includes the 14182debug output trace mechanism and has a much larger code and data size. 14183Note 14184that these values will vary depending on the efficiency of the compiler 14185and 14186the compiler options used during generation. 14187 14188 Previous Release: 14189 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14190 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 14191 Current Release: 14192 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14193 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 14194 14195 141962) iASL Compiler/Disassembler: 14197 14198Fixed a problem with the Return operator with no arguments. Since the AML 14199grammar for the byte encoding requires an operand for the Return opcode, 14200the 14201compiler now emits a Return(Zero) for this case. An ACPI specification 14202update has been written for this case. 14203 14204For tables other than the DSDT, namepath optimization is automatically 14205disabled. This is because SSDTs can be loaded anywhere in the namespace, 14206the 14207compiler has no knowledge of where, and thus cannot optimize namepaths. 14208 14209Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 14210inadvertently omitted from the ACPI specification, and will require an 14211update to the spec. 14212 14213The source file scan for ASCII characters is now optional (-a). This 14214change 14215was made because some vendors place non-ascii characters within comments. 14216However, the scan is simply a brute-force byte compare to ensure all 14217characters in the file are in the range 0x00 to 0x7F. 14218 14219Fixed a problem with the CondRefOf operator where the compiler was 14220inappropriately checking for the existence of the target. Since the point 14221of 14222the operator is to check for the existence of the target at run-time, the 14223compiler no longer checks for the target existence. 14224 14225Fixed a problem where errors generated from the internal AML interpreter 14226during constant folding were not handled properly, causing a fault. 14227 14228Fixed a problem with overly aggressive range checking for the Stall 14229operator. The valid range (max 255) is now only checked if the operand is 14230of 14231type Integer. All other operand types cannot be statically checked. 14232 14233Fixed a problem where control method references within the RefOf, 14234DeRefOf, 14235and ObjectType operators were not treated properly. They are now treated 14236as 14237actual references, not method invocations. 14238 14239Fixed and enhanced the "list namespace" option (-ln). This option was 14240broken 14241a number of releases ago. 14242 14243Improved error handling for the Field, IndexField, and BankField 14244operators. 14245The compiler now cleanly reports and recovers from errors in the field 14246component (FieldUnit) list. 14247 14248Fixed a disassembler problem where the optional ResourceDescriptor fields 14249TRS and TTP were not always handled correctly. 14250 14251Disassembler - Comments in output now use "//" instead of "/*" 14252 14253---------------------------------------- 1425428 February 2005. Summary of changes for version 20050228: 14255 142561) ACPI CA Core Subsystem: 14257 14258Fixed a problem where the result of an Index() operator (an object 14259reference) must increment the reference count on the target object for 14260the 14261life of the object reference. 14262 14263Implemented AML Interpreter and Debugger support for the new ACPI 3.0 14264Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 14265WordSpace 14266resource descriptors. 14267 14268Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 14269Space Descriptor" string, indicating interpreter support for the 14270descriptors 14271above. 14272 14273Implemented header support for the new ACPI 3.0 FADT flag bits. 14274 14275Implemented header support for the new ACPI 3.0 PCI Express bits for the 14276PM1 14277status/enable registers. 14278 14279Updated header support for the MADT processor local Apic struct and MADT 14280platform interrupt source struct for new ACPI 3.0 fields. 14281 14282Implemented header support for the SRAT and SLIT ACPI tables. 14283 14284Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 14285flag 14286at runtime. 14287 14288Code and Data Size: Current and previous core subsystem library sizes are 14289shown below. These are the code and data sizes for the acpica.lib 14290produced 14291by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14292any ACPI driver or OSPM code. The debug version of the code includes the 14293debug output trace mechanism and has a much larger code and data size. 14294Note 14295that these values will vary depending on the efficiency of the compiler 14296and 14297the compiler options used during generation. 14298 14299 Previous Release: 14300 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 14301 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 14302 Current Release: 14303 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14304 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 14305 14306 143072) iASL Compiler/Disassembler: 14308 14309Fixed a problem with the internal 64-bit String-to-integer conversion 14310with 14311strings less than two characters long. 14312 14313Fixed a problem with constant folding where the result of the Index() 14314operator can not be considered a constant. This means that Index() cannot 14315be 14316a type3 opcode and this will require an update to the ACPI specification. 14317 14318Disassembler: Implemented support for the TTP, MTP, and TRS resource 14319descriptor fields. These fields were inadvertently ignored and not output 14320in 14321the disassembly of the resource descriptor. 14322 14323 14324 ---------------------------------------- 1432511 February 2005. Summary of changes for version 20050211: 14326 143271) ACPI CA Core Subsystem: 14328 14329Implemented ACPI 3.0 support for implicit conversion within the Match() 14330operator. MatchObjects can now be of type integer, buffer, or string 14331instead 14332of just type integer. Package elements are implicitly converted to the 14333type 14334of the MatchObject. This change aligns the behavior of Match() with the 14335behavior of the other logical operators (LLess(), etc.) It also requires 14336an 14337errata change to the ACPI specification as this support was intended for 14338ACPI 3.0, but was inadvertently omitted. 14339 14340Fixed a problem with the internal implicit "to buffer" conversion. 14341Strings 14342that are converted to buffers will cause buffer truncation if the string 14343is 14344smaller than the target buffer. Integers that are converted to buffers 14345will 14346not cause buffer truncation, only zero extension (both as per the ACPI 14347spec.) The problem was introduced when code was added to truncate the 14348buffer, but this should not be performed in all cases, only the string 14349case. 14350 14351Fixed a problem with the Buffer and Package operators where the 14352interpreter 14353would get confused if two such operators were used as operands to an ASL 14354operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 14355stack was not being popped after the execution of these operators, 14356resulting 14357in an AE_NO_RETURN_VALUE exception. 14358 14359Fixed a problem with constructs of the form Store(Index(...),...). The 14360reference object returned from Index was inadvertently resolved to an 14361actual 14362value. This problem was introduced in version 20050114 when the behavior 14363of 14364Store() was modified to restrict the object types that can be used as the 14365source operand (to match the ACPI specification.) 14366 14367Reduced excessive stack use within the AcpiGetObjectInfo procedure. 14368 14369Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 14370 14371Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 14372 14373Code and Data Size: Current and previous core subsystem library sizes are 14374shown below. These are the code and data sizes for the acpica.lib 14375produced 14376by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14377any ACPI driver or OSPM code. The debug version of the code includes the 14378debug output trace mechanism and has a much larger code and data size. 14379Note 14380that these values will vary depending on the efficiency of the compiler 14381and 14382the compiler options used during generation. 14383 14384 Previous Release: 14385 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 14386 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 14387 Current Release: 14388 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 14389 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 14390 14391 143922) iASL Compiler/Disassembler: 14393 14394Fixed a code generation problem in the constant folding optimization code 14395where incorrect code was generated if a constant was reduced to a buffer 14396object (i.e., a reduced type 5 opcode.) 14397 14398Fixed a typechecking problem for the ToBuffer operator. Caused by an 14399incorrect return type in the internal opcode information table. 14400 14401---------------------------------------- 1440225 January 2005. Summary of changes for version 20050125: 14403 144041) ACPI CA Core Subsystem: 14405 14406Fixed a recently introduced problem with the Global Lock where the 14407underlying semaphore was not created. This problem was introduced in 14408version 20050114, and caused an AE_AML_NO_OPERAND exception during an 14409Acquire() operation on _GL. 14410 14411The local object cache is now optional, and is disabled by default. Both 14412AcpiExec and the iASL compiler enable the cache because they run in user 14413mode and this enhances their performance. #define 14414ACPI_ENABLE_OBJECT_CACHE 14415to enable the local cache. 14416 14417Fixed an issue in the internal function AcpiUtEvaluateObject concerning 14418the 14419optional "implicit return" support where an error was returned if no 14420return 14421object was expected, but one was implicitly returned. AE_OK is now 14422returned 14423in this case and the implicitly returned object is deleted. 14424AcpiUtEvaluateObject is only occasionally used, and only to execute 14425reserved 14426methods such as _STA and _INI where the return type is known up front. 14427 14428Fixed a few issues with the internal convert-to-integer code. It now 14429returns 14430an error if an attempt is made to convert a null string, a string of only 14431blanks/tabs, or a zero-length buffer. This affects both implicit 14432conversion 14433and explicit conversion via the ToInteger() operator. 14434 14435The internal debug code in AcpiUtAcquireMutex has been commented out. It 14436is 14437not needed for normal operation and should increase the performance of 14438the 14439entire subsystem. The code remains in case it is needed for debug 14440purposes 14441again. 14442 14443The AcpiExec source and makefile are included in the Unix/Linux package 14444for 14445the first time. 14446 14447Code and Data Size: Current and previous core subsystem library sizes are 14448shown below. These are the code and data sizes for the acpica.lib 14449produced 14450by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14451any ACPI driver or OSPM code. The debug version of the code includes the 14452debug output trace mechanism and has a much larger code and data size. 14453Note 14454that these values will vary depending on the efficiency of the compiler 14455and 14456the compiler options used during generation. 14457 14458 Previous Release: 14459 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14460 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14461 Current Release: 14462 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 14463 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 14464 144652) iASL Compiler/Disassembler: 14466 14467Switch/Case support: A warning is now issued if the type of the Switch 14468value 14469cannot be determined at compile time. For example, Switch(Arg0) will 14470generate the warning, and the type is assumed to be an integer. As per 14471the 14472ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 14473the 14474warning. 14475 14476Switch/Case support: Implemented support for buffer and string objects as 14477the switch value. This is an ACPI 3.0 feature, now that LEqual supports 14478buffers and strings. 14479 14480Switch/Case support: The emitted code for the LEqual() comparisons now 14481uses 14482the switch value as the first operand, not the second. The case value is 14483now 14484the second operand, and this allows the case value to be implicitly 14485converted to the type of the switch value, not the other way around. 14486 14487Switch/Case support: Temporary variables are now emitted immediately 14488within 14489the control method, not at the global level. This means that there are 14490now 1449136 temps available per-method, not 36 temps per-module as was the case 14492with 14493the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 14494 14495---------------------------------------- 1449614 January 2005. Summary of changes for version 20050114: 14497 14498Added 2005 copyright to all module headers. This affects every module in 14499the core subsystem, iASL compiler, and the utilities. 14500 145011) ACPI CA Core Subsystem: 14502 14503Fixed an issue with the String-to-Buffer conversion code where the string 14504null terminator was not included in the buffer after conversion, but 14505there 14506is existing ASL that assumes the string null terminator is included. This 14507is 14508the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 14509introduced in the previous version when the code was updated to correctly 14510set the converted buffer size as per the ACPI specification. The ACPI 14511spec 14512is ambiguous and will be updated to specify that the null terminator must 14513be 14514included in the converted buffer. This also affects the ToBuffer() ASL 14515operator. 14516 14517Fixed a problem with the Mid() ASL/AML operator where it did not work 14518correctly on Buffer objects. Newly created sub-buffers were not being 14519marked 14520as initialized. 14521 14522 14523Fixed a problem in AcpiTbFindTable where incorrect string compares were 14524performed on the OemId and OemTableId table header fields. These fields 14525are 14526not null terminated, so strncmp is now used instead of strcmp. 14527 14528Implemented a restriction on the Store() ASL/AML operator to align the 14529behavior with the ACPI specification. Previously, any object could be 14530used 14531as the source operand. Now, the only objects that may be used are 14532Integers, 14533Buffers, Strings, Packages, Object References, and DDB Handles. If 14534necessary, the original behavior can be restored by enabling the 14535EnableInterpreterSlack flag. 14536 14537Enhanced the optional "implicit return" support to allow an implicit 14538return 14539value from methods that are invoked externally via the AcpiEvaluateObject 14540interface. This enables implicit returns from the _STA and _INI methods, 14541for example. 14542 14543Changed the Revision() ASL/AML operator to return the current version of 14544the 14545AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 14546returned 14547the supported ACPI version (This is the function of the _REV method). 14548 14549Updated the _REV predefined method to return the currently supported 14550version 14551of ACPI, now 3. 14552 14553Implemented batch mode option for the AcpiExec utility (-b). 14554 14555Code and Data Size: Current and previous core subsystem library sizes are 14556shown below. These are the code and data sizes for the acpica.lib 14557produced 14558by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14559any ACPI driver or OSPM code. The debug version of the code includes the 14560debug output trace mechanism and has a much larger code and data size. 14561Note 14562that these values will vary depending on the efficiency of the compiler 14563and 14564the compiler options used during generation. 14565 14566 Previous Release: 14567 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14568 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14569 Current Release: 14570 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14571 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14572 14573---------------------------------------- 1457410 December 2004. Summary of changes for version 20041210: 14575 14576ACPI 3.0 support is nearing completion in both the iASL compiler and the 14577ACPI CA core subsystem. 14578 145791) ACPI CA Core Subsystem: 14580 14581Fixed a problem in the ToDecimalString operator where the resulting 14582string 14583length was incorrectly calculated. The length is now calculated exactly, 14584eliminating incorrect AE_STRING_LIMIT exceptions. 14585 14586Fixed a problem in the ToHexString operator to allow a maximum 200 14587character 14588string to be produced. 14589 14590Fixed a problem in the internal string-to-buffer and buffer-to-buffer 14591copy 14592routine where the length of the resulting buffer was not truncated to the 14593new size (if the target buffer already existed). 14594 14595Code and Data Size: Current and previous core subsystem library sizes are 14596shown below. These are the code and data sizes for the acpica.lib 14597produced 14598by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14599any ACPI driver or OSPM code. The debug version of the code includes the 14600debug output trace mechanism and has a much larger code and data size. 14601Note 14602that these values will vary depending on the efficiency of the compiler 14603and 14604the compiler options used during generation. 14605 14606 Previous Release: 14607 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14608 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14609 Current Release: 14610 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14611 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14612 14613 146142) iASL Compiler/Disassembler: 14615 14616Implemented the new ACPI 3.0 resource template macros - DWordSpace, 14617ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 14618Includes support in the disassembler. 14619 14620Implemented support for the new (ACPI 3.0) parameter to the Register 14621macro, 14622AccessSize. 14623 14624Fixed a problem where the _HE resource name for the Interrupt macro was 14625referencing bit 0 instead of bit 1. 14626 14627Implemented check for maximum 255 interrupts in the Interrupt macro. 14628 14629Fixed a problem with the predefined resource descriptor names where 14630incorrect AML code was generated if the offset within the resource buffer 14631was 0 or 1. The optimizer shortened the AML code to a single byte opcode 14632but did not update the surrounding package lengths. 14633 14634Changes to the Dma macro: All channels within the channel list must be 14635in 14636the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 14637optional (default is BusMaster). 14638 14639Implemented check for maximum 7 data bytes for the VendorShort macro. 14640 14641The ReadWrite parameter is now optional for the Memory32 and similar 14642macros. 14643 14644---------------------------------------- 1464503 December 2004. Summary of changes for version 20041203: 14646 146471) ACPI CA Core Subsystem: 14648 14649The low-level field insertion/extraction code (exfldio) has been 14650completely 14651rewritten to eliminate unnecessary complexity, bugs, and boundary 14652conditions. 14653 14654Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 14655ToDecimalString 14656operators where the input operand could be inadvertently deleted if no 14657conversion was necessary (e.g., if the input to ToInteger was an Integer 14658object.) 14659 14660Fixed a problem with the ToDecimalString and ToHexString where an 14661incorrect 14662exception code was returned if the resulting string would be > 200 chars. 14663AE_STRING_LIMIT is now returned. 14664 14665Fixed a problem with the Concatenate operator where AE_OK was always 14666returned, even if the operation failed. 14667 14668Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 14669semaphores to be allocated. 14670 14671Code and Data Size: Current and previous core subsystem library sizes are 14672shown below. These are the code and data sizes for the acpica.lib 14673produced 14674by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14675any ACPI driver or OSPM code. The debug version of the code includes the 14676debug output trace mechanism and has a much larger code and data size. 14677Note 14678that these values will vary depending on the efficiency of the compiler 14679and 14680the compiler options used during generation. 14681 14682 Previous Release: 14683 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14684 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14685 Current Release: 14686 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14687 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14688 14689 146902) iASL Compiler/Disassembler: 14691 14692Fixed typechecking for the ObjectType and SizeOf operators. Problem was 14693recently introduced in 20041119. 14694 14695Fixed a problem with the ToUUID macro where the upper nybble of each 14696buffer 14697byte was inadvertently set to zero. 14698 14699---------------------------------------- 1470019 November 2004. Summary of changes for version 20041119: 14701 147021) ACPI CA Core Subsystem: 14703 14704Fixed a problem in the internal ConvertToInteger routine where new 14705integers 14706were not truncated to 32 bits for 32-bit ACPI tables. This routine 14707converts 14708buffers and strings to integers. 14709 14710Implemented support to store a value to an Index() on a String object. 14711This 14712is an ACPI 2.0 feature that had not yet been implemented. 14713 14714Implemented new behavior for storing objects to individual package 14715elements 14716(via the Index() operator). The previous behavior was to invoke the 14717implicit 14718conversion rules if an object was already present at the index. The new 14719behavior is to simply delete any existing object and directly store the 14720new 14721object. Although the ACPI specification seems unclear on this subject, 14722other 14723ACPI implementations behave in this manner. (This is the root of the 14724AE_BAD_HEX_CONSTANT issue.) 14725 14726Modified the RSDP memory scan mechanism to support the extended checksum 14727for 14728ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 14729RSDP signature is found with a valid checksum. 14730 14731Code and Data Size: Current and previous core subsystem library sizes are 14732shown below. These are the code and data sizes for the acpica.lib 14733produced 14734by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14735any ACPI driver or OSPM code. The debug version of the code includes the 14736debug output trace mechanism and has a much larger code and data size. 14737Note 14738that these values will vary depending on the efficiency of the compiler 14739and 14740the compiler options used during generation. 14741 14742 Previous Release: 14743 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14744 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14745 Current Release: 14746 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14747 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14748 14749 147502) iASL Compiler/Disassembler: 14751 14752Fixed a missing semicolon in the aslcompiler.y file. 14753 14754---------------------------------------- 1475505 November 2004. Summary of changes for version 20041105: 14756 147571) ACPI CA Core Subsystem: 14758 14759Implemented support for FADT revision 2. This was an interim table 14760(between 14761ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 14762 14763Implemented optional support to allow uninitialized LocalX and ArgX 14764variables in a control method. The variables are initialized to an 14765Integer 14766object with a value of zero. This support is enabled by setting the 14767AcpiGbl_EnableInterpreterSlack flag to TRUE. 14768 14769Implemented support for Integer objects for the SizeOf operator. Either 147704 14771or 8 is returned, depending on the current integer size (32-bit or 64- 14772bit, 14773depending on the parent table revision). 14774 14775Fixed a problem in the implementation of the SizeOf and ObjectType 14776operators 14777where the operand was resolved to a value too early, causing incorrect 14778return values for some objects. 14779 14780Fixed some possible memory leaks during exceptional conditions. 14781 14782Code and Data Size: Current and previous core subsystem library sizes are 14783shown below. These are the code and data sizes for the acpica.lib 14784produced 14785by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14786any ACPI driver or OSPM code. The debug version of the code includes the 14787debug output trace mechanism and has a much larger code and data size. 14788Note 14789that these values will vary depending on the efficiency of the compiler 14790and 14791the compiler options used during generation. 14792 14793 Previous Release: 14794 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14795 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14796 Current Release: 14797 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14798 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14799 14800 148012) iASL Compiler/Disassembler: 14802 14803Implemented support for all ACPI 3.0 reserved names and methods. 14804 14805Implemented all ACPI 3.0 grammar elements in the front-end, including 14806support for semicolons. 14807 14808Implemented the ACPI 3.0 Function() and ToUUID() macros 14809 14810Fixed a problem in the disassembler where a Scope() operator would not be 14811emitted properly if the target of the scope was in another table. 14812 14813---------------------------------------- 1481415 October 2004. Summary of changes for version 20041015: 14815 14816Note: ACPI CA is currently undergoing an in-depth and complete formal 14817evaluation to test/verify the following areas. Other suggestions are 14818welcome. This will result in an increase in the frequency of releases and 14819the number of bug fixes in the next few months. 14820 - Functional tests for all ASL/AML operators 14821 - All implicit/explicit type conversions 14822 - Bit fields and operation regions 14823 - 64-bit math support and 32-bit-only "truncated" math support 14824 - Exceptional conditions, both compiler and interpreter 14825 - Dynamic object deletion and memory leaks 14826 - ACPI 3.0 support when implemented 14827 - External interfaces to the ACPI subsystem 14828 14829 148301) ACPI CA Core Subsystem: 14831 14832Fixed two alignment issues on 64-bit platforms - within debug statements 14833in 14834AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 14835Address 14836field within the non-aligned ACPI generic address structure. 14837 14838Fixed a problem in the Increment and Decrement operators where incorrect 14839operand resolution could result in the inadvertent modification of the 14840original integer when the integer is passed into another method as an 14841argument and the arg is then incremented/decremented. 14842 14843Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 14844bit 14845BCD number were truncated during conversion. 14846 14847Fixed a problem in the ToDecimal operator where the length of the 14848resulting 14849string could be set incorrectly too long if the input operand was a 14850Buffer 14851object. 14852 14853Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 14854(0) 14855within a buffer would prematurely terminate a compare between buffer 14856objects. 14857 14858Added a check for string overflow (>200 characters as per the ACPI 14859specification) during the Concatenate operator with two string operands. 14860 14861Code and Data Size: Current and previous core subsystem library sizes are 14862shown below. These are the code and data sizes for the acpica.lib 14863produced 14864by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14865any ACPI driver or OSPM code. The debug version of the code includes the 14866debug output trace mechanism and has a much larger code and data size. 14867Note 14868that these values will vary depending on the efficiency of the compiler 14869and 14870the compiler options used during generation. 14871 14872 Previous Release: 14873 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14874 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14875 Current Release: 14876 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14877 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14878 14879 14880 148812) iASL Compiler/Disassembler: 14882 14883Allow the use of the ObjectType operator on uninitialized Locals and Args 14884(returns 0 as per the ACPI specification). 14885 14886Fixed a problem where the compiler would fault if there was a syntax 14887error 14888in the FieldName of all of the various CreateXXXField operators. 14889 14890Disallow the use of lower case letters within the EISAID macro, as per 14891the 14892ACPI specification. All EISAID strings must be of the form "UUUNNNN" 14893Where 14894U is an uppercase letter and N is a hex digit. 14895 14896 14897---------------------------------------- 1489806 October 2004. Summary of changes for version 20041006: 14899 149001) ACPI CA Core Subsystem: 14901 14902Implemented support for the ACPI 3.0 Timer operator. This ASL function 14903implements a 64-bit timer with 100 nanosecond granularity. 14904 14905Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 14906implement the ACPI 3.0 Timer operator. This allows the host OS to 14907implement 14908the timer with the best clock available. Also, it keeps the core 14909subsystem 14910out of the clock handling business, since the host OS (usually) performs 14911this function. 14912 14913Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 14914functions use a 64-bit address which is part of the packed ACPI Generic 14915Address Structure. Since the structure is non-aligned, the alignment 14916macros 14917are now used to extract the address to a local variable before use. 14918 14919Fixed a problem where the ToInteger operator assumed all input strings 14920were 14921hexadecimal. The operator now handles both decimal strings and hex 14922strings 14923(prefixed with "0x"). 14924 14925Fixed a problem where the string length in the string object created as a 14926result of the internal ConvertToString procedure could be incorrect. This 14927potentially affected all implicit conversions and also the 14928ToDecimalString 14929and ToHexString operators. 14930 14931Fixed two problems in the ToString operator. If the length parameter was 14932zero, an incorrect string object was created and the value of the input 14933length parameter was inadvertently changed from zero to Ones. 14934 14935Fixed a problem where the optional ResourceSource string in the 14936ExtendedIRQ 14937resource macro was ignored. 14938 14939Simplified the interfaces to the internal division functions, reducing 14940code 14941size and complexity. 14942 14943Code and Data Size: Current and previous core subsystem library sizes are 14944shown below. These are the code and data sizes for the acpica.lib 14945produced 14946by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14947any ACPI driver or OSPM code. The debug version of the code includes the 14948debug output trace mechanism and has a much larger code and data size. 14949Note 14950that these values will vary depending on the efficiency of the compiler 14951and 14952the compiler options used during generation. 14953 14954 Previous Release: 14955 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14956 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14957 Current Release: 14958 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14959 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14960 14961 149622) iASL Compiler/Disassembler: 14963 14964Implemented support for the ACPI 3.0 Timer operator. 14965 14966Fixed a problem where the Default() operator was inadvertently ignored in 14967a 14968Switch/Case block. This was a problem in the translation of the Switch 14969statement to If...Else pairs. 14970 14971Added support to allow a standalone Return operator, with no parentheses 14972(or 14973operands). 14974 14975Fixed a problem with code generation for the ElseIf operator where the 14976translated Else...If parse tree was improperly constructed leading to the 14977loss of some code. 14978 14979---------------------------------------- 1498022 September 2004. Summary of changes for version 20040922: 14981 149821) ACPI CA Core Subsystem: 14983 14984Fixed a problem with the implementation of the LNot() operator where 14985"Ones" 14986was not returned for the TRUE case. Changed the code to return Ones 14987instead 14988of (!Arg) which was usually 1. This change affects iASL constant folding 14989for 14990this operator also. 14991 14992Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 14993not 14994initialized properly -- Now zero the entire buffer in this case where the 14995buffer already exists. 14996 14997Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 14998Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 14999related code considerably. This will require changes/updates to all OS 15000interface layers (OSLs.) 15001 15002Implemented a new external interface, AcpiInstallExceptionHandler, to 15003allow 15004a system exception handler to be installed. This handler is invoked upon 15005any 15006run-time exception that occurs during control method execution. 15007 15008Added support for the DSDT in AcpiTbFindTable. This allows the 15009DataTableRegion() operator to access the local copy of the DSDT. 15010 15011Code and Data Size: Current and previous core subsystem library sizes are 15012shown below. These are the code and data sizes for the acpica.lib 15013produced 15014by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15015any ACPI driver or OSPM code. The debug version of the code includes the 15016debug output trace mechanism and has a much larger code and data size. 15017Note 15018that these values will vary depending on the efficiency of the compiler 15019and 15020the compiler options used during generation. 15021 15022 Previous Release: 15023 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 15024 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 15025 Current Release: 15026 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 15027 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 15028 15029 150302) iASL Compiler/Disassembler: 15031 15032Fixed a problem with constant folding and the LNot operator. LNot was 15033returning 1 in the TRUE case, not Ones as per the ACPI specification. 15034This 15035could result in the generation of an incorrect folded/reduced constant. 15036 15037End-Of-File is now allowed within a "//"-style comment. A parse error no 15038longer occurs if such a comment is at the very end of the input ASL 15039source 15040file. 15041 15042Implemented the "-r" option to override the Revision in the table header. 15043The initial use of this option will be to simplify the evaluation of the 15044AML 15045interpreter by allowing a single ASL source module to be compiled for 15046either 1504732-bit or 64-bit integers. 15048 15049 15050---------------------------------------- 1505127 August 2004. Summary of changes for version 20040827: 15052 150531) ACPI CA Core Subsystem: 15054 15055- Implemented support for implicit object conversion in the non-numeric 15056logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 15057and 15058LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 15059the second operand is implicitly converted on the fly to match the type 15060of 15061the first operand. For example: 15062 15063 LEqual (Source1, Source2) 15064 15065Source1 and Source2 must each evaluate to an integer, a string, or a 15066buffer. 15067The data type of Source1 dictates the required type of Source2. Source2 15068is 15069implicitly converted if necessary to match the type of Source1. 15070 15071- Updated and corrected the behavior of the string conversion support. 15072The 15073rules concerning conversion of buffers to strings (according to the ACPI 15074specification) are as follows: 15075 15076ToDecimalString - explicit byte-wise conversion of buffer to string of 15077decimal values (0-255) separated by commas. ToHexString - explicit byte- 15078wise 15079conversion of buffer to string of hex values (0-FF) separated by commas. 15080ToString - explicit byte-wise conversion of buffer to string. Byte-by- 15081byte 15082copy with no transform except NULL terminated. Any other implicit buffer- 15083to- 15084string conversion - byte-wise conversion of buffer to string of hex 15085values 15086(0-FF) separated by spaces. 15087 15088- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 15089 15090- Fixed a problem in AcpiNsGetPathnameLength where the returned length 15091was 15092one byte too short in the case of a node in the root scope. This could 15093cause a fault during debug output. 15094 15095- Code and Data Size: Current and previous core subsystem library sizes 15096are 15097shown below. These are the code and data sizes for the acpica.lib 15098produced 15099by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15100any ACPI driver or OSPM code. The debug version of the code includes the 15101debug output trace mechanism and has a much larger code and data size. 15102Note 15103that these values will vary depending on the efficiency of the compiler 15104and 15105the compiler options used during generation. 15106 15107 Previous Release: 15108 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 15109 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 15110 Current Release: 15111 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 15112 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 15113 15114 151152) iASL Compiler/Disassembler: 15116 15117- Fixed a Linux generation error. 15118 15119 15120---------------------------------------- 1512116 August 2004. Summary of changes for version 20040816: 15122 151231) ACPI CA Core Subsystem: 15124 15125Designed and implemented support within the AML interpreter for the so- 15126called "implicit return". This support returns the result of the last 15127ASL 15128operation within a control method, in the absence of an explicit Return() 15129operator. A few machines depend on this behavior, even though it is not 15130explicitly supported by the ASL language. It is optional support that 15131can 15132be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 15133 15134Removed support for the PCI_Config address space from the internal low 15135level 15136hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 15137support was not used internally, and would not work correctly anyway 15138because 15139the PCI bus number and segment number were not supported. There are 15140separate interfaces for PCI configuration space access because of the 15141unique 15142interface. 15143 15144Code and Data Size: Current and previous core subsystem library sizes are 15145shown below. These are the code and data sizes for the acpica.lib 15146produced 15147by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15148any ACPI driver or OSPM code. The debug version of the code includes the 15149debug output trace mechanism and has a much larger code and data size. 15150Note 15151that these values will vary depending on the efficiency of the compiler 15152and 15153the compiler options used during generation. 15154 15155 Previous Release: 15156 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 15157 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 15158 Current Release: 15159 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 15160 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 15161 15162 151632) iASL Compiler/Disassembler: 15164 15165Fixed a problem where constants in ASL expressions at the root level (not 15166within a control method) could be inadvertently truncated during code 15167generation. This problem was introduced in the 20040715 release. 15168 15169 15170---------------------------------------- 1517115 July 2004. Summary of changes for version 20040715: 15172 151731) ACPI CA Core Subsystem: 15174 15175Restructured the internal HW GPE interfaces to pass/track the current 15176state 15177of interrupts (enabled/disabled) in order to avoid possible deadlock and 15178increase flexibility of the interfaces. 15179 15180Implemented a "lexicographical compare" for String and Buffer objects 15181within 15182the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 15183- 15184as per further clarification to the ACPI specification. Behavior is 15185similar 15186to C library "strcmp". 15187 15188Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 15189external function. In the 32-bit non-debug case, the stack use has been 15190reduced from 168 bytes to 32 bytes. 15191 15192Deployed a new run-time configuration flag, 15193AcpiGbl_EnableInterpreterSlack, 15194whose purpose is to allow the AML interpreter to forgive certain bad AML 15195constructs. Default setting is FALSE. 15196 15197Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 15198IO 15199support code. If enabled, it allows field access to go beyond the end of 15200a 15201region definition if the field is within the region length rounded up to 15202the 15203next access width boundary (a common coding error.) 15204 15205Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 15206ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 15207these 15208symbols are lowercase by the latest version of the AcpiSrc tool. 15209 15210The prototypes for the PCI interfaces in acpiosxf.h have been updated to 15211rename "Register" to simply "Reg" to prevent certain compilers from 15212complaining. 15213 15214Code and Data Size: Current and previous core subsystem library sizes are 15215shown below. These are the code and data sizes for the acpica.lib 15216produced 15217by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15218any ACPI driver or OSPM code. The debug version of the code includes the 15219debug output trace mechanism and has a much larger code and data size. 15220Note 15221that these values will vary depending on the efficiency of the compiler 15222and 15223the compiler options used during generation. 15224 15225 Previous Release: 15226 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 15227 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 15228 Current Release: 15229 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 15230 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 15231 15232 152332) iASL Compiler/Disassembler: 15234 15235Implemented full support for Package objects within the Case() operator. 15236Note: The Break() operator is currently not supported within Case blocks 15237(TermLists) as there is some question about backward compatibility with 15238ACPI 152391.0 interpreters. 15240 15241 15242Fixed a problem where complex terms were not supported properly within 15243the 15244Switch() operator. 15245 15246Eliminated extraneous warning for compiler-emitted reserved names of the 15247form "_T_x". (Used in Switch/Case operators.) 15248 15249Eliminated optimization messages for "_T_x" objects and small constants 15250within the DefinitionBlock operator. 15251 15252 15253---------------------------------------- 1525415 June 2004. Summary of changes for version 20040615: 15255 152561) ACPI CA Core Subsystem: 15257 15258Implemented support for Buffer and String objects (as per ACPI 2.0) for 15259the 15260following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 15261LLessEqual. 15262 15263All directory names in the entire source package are lower case, as they 15264were in earlier releases. 15265 15266Implemented "Disassemble" command in the AML debugger that will 15267disassemble 15268a single control method. 15269 15270Code and Data Size: Current and previous core subsystem library sizes are 15271shown below. These are the code and data sizes for the acpica.lib 15272produced 15273by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15274any ACPI driver or OSPM code. The debug version of the code includes the 15275debug output trace mechanism and has a much larger code and data size. 15276Note 15277that these values will vary depending on the efficiency of the compiler 15278and 15279the compiler options used during generation. 15280 15281 Previous Release: 15282 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 15283 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 15284 15285 Current Release: 15286 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 15287 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 15288 15289 152902) iASL Compiler/Disassembler: 15291 15292Implemented support for Buffer and String objects (as per ACPI 2.0) for 15293the 15294following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 15295LLessEqual. 15296 15297All directory names in the entire source package are lower case, as they 15298were in earlier releases. 15299 15300Fixed a fault when using the -g or -d<nofilename> options if the FADT was 15301not found. 15302 15303Fixed an issue with the Windows version of the compiler where later 15304versions 15305of Windows place the FADT in the registry under the name "FADT" and not 15306"FACP" as earlier versions did. This applies when using the -g or - 15307d<nofilename> options. The compiler now looks for both strings as 15308necessary. 15309 15310Fixed a problem with compiler namepath optimization where a namepath 15311within 15312the Scope() operator could not be optimized if the namepath was a subpath 15313of 15314the current scope path. 15315 15316---------------------------------------- 1531727 May 2004. Summary of changes for version 20040527: 15318 153191) ACPI CA Core Subsystem: 15320 15321Completed a new design and implementation for EBDA (Extended BIOS Data 15322Area) 15323support in the RSDP scan code. The original code improperly scanned for 15324the 15325EBDA by simply scanning from memory location 0 to 0x400. The correct 15326method 15327is to first obtain the EBDA pointer from within the BIOS data area, then 15328scan 1K of memory starting at the EBDA pointer. There appear to be few 15329if 15330any machines that place the RSDP in the EBDA, however. 15331 15332Integrated a fix for a possible fault during evaluation of BufferField 15333arguments. Obsolete code that was causing the problem was removed. 15334 15335Found and fixed a problem in the Field Support Code where data could be 15336corrupted on a bit field read that starts on an aligned boundary but does 15337not end on an aligned boundary. Merged the read/write "datum length" 15338calculation code into a common procedure. 15339 15340Rolled in a couple of changes to the FreeBSD-specific header. 15341 15342 15343Code and Data Size: Current and previous core subsystem library sizes are 15344shown below. These are the code and data sizes for the acpica.lib 15345produced 15346by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15347any ACPI driver or OSPM code. The debug version of the code includes the 15348debug output trace mechanism and has a much larger code and data size. 15349Note 15350that these values will vary depending on the efficiency of the compiler 15351and 15352the compiler options used during generation. 15353 15354 Previous Release: 15355 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15356 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 15357 Current Release: 15358 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 15359 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 15360 15361 153622) iASL Compiler/Disassembler: 15363 15364Fixed a generation warning produced by some overly-verbose compilers for 15365a 1536664-bit constant. 15367 15368---------------------------------------- 1536914 May 2004. Summary of changes for version 20040514: 15370 153711) ACPI CA Core Subsystem: 15372 15373Fixed a problem where hardware GPE enable bits sometimes not set properly 15374during and after GPE method execution. Result of 04/27 changes. 15375 15376Removed extra "clear all GPEs" when sleeping/waking. 15377 15378Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 15379AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 15380to 15381the new AcpiEv* calls as appropriate. 15382 15383ACPI_OS_NAME was removed from the OS-specific headers. The default name 15384is 15385now "Microsoft Windows NT" for maximum compatibility. However this can 15386be 15387changed by modifying the acconfig.h file. 15388 15389Allow a single invocation of AcpiInstallNotifyHandler for a handler that 15390traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 15391 15392Run _INI methods on ThermalZone objects. This is against the ACPI 15393specification, but there is apparently ASL code in the field that has 15394these 15395_INI methods, and apparently "other" AML interpreters execute them. 15396 15397Performed a full 16/32/64 bit lint that resulted in some small changes. 15398 15399Added a sleep simulation command to the AML debugger to test sleep code. 15400 15401Code and Data Size: Current and previous core subsystem library sizes are 15402shown below. These are the code and data sizes for the acpica.lib 15403produced 15404by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15405any ACPI driver or OSPM code. The debug version of the code includes the 15406debug output trace mechanism and has a much larger code and data size. 15407Note 15408that these values will vary depending on the efficiency of the compiler 15409and 15410the compiler options used during generation. 15411 15412 Previous Release: 15413 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15414 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 15415 Current Release: 15416 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15417 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 15418 15419---------------------------------------- 1542027 April 2004. Summary of changes for version 20040427: 15421 154221) ACPI CA Core Subsystem: 15423 15424Completed a major overhaul of the GPE handling within ACPI CA. There are 15425now three types of GPEs: wake-only, runtime-only, and combination 15426wake/run. 15427The only GPEs allowed to be combination wake/run are for button-style 15428devices such as a control-method power button, control-method sleep 15429button, 15430or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 15431not 15432referenced by any _PRW methods are marked for "runtime" and hardware 15433enabled. Any GPE that is referenced by a _PRW method is marked for 15434"wake" 15435(and disabled at runtime). However, at sleep time, only those GPEs that 15436have been specifically enabled for wake via the AcpiEnableGpe interface 15437will 15438actually be hardware enabled. 15439 15440A new external interface has been added, AcpiSetGpeType(), that is meant 15441to 15442be used by device drivers to force a GPE to a particular type. It will 15443be 15444especially useful for the drivers for the button devices mentioned above. 15445 15446Completed restructuring of the ACPI CA initialization sequence so that 15447default operation region handlers are installed before GPEs are 15448initialized 15449and the _PRW methods are executed. This will prevent errors when the 15450_PRW 15451methods attempt to access system memory or I/O space. 15452 15453GPE enable/disable no longer reads the GPE enable register. We now keep 15454the 15455enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 15456thus no longer depend on the hardware to maintain these bits. 15457 15458Always clear the wake status and fixed/GPE status bits before sleep, even 15459for state S5. 15460 15461Improved the AML debugger output for displaying the GPE blocks and their 15462current status. 15463 15464Added new strings for the _OSI method, of the form "Windows 2001 SPx" 15465where 15466x = 0,1,2,3,4. 15467 15468Fixed a problem where the physical address was incorrectly calculated 15469when 15470the Load() operator was used to directly load from an Operation Region 15471(vs. 15472loading from a Field object.) Also added check for minimum table length 15473for 15474this case. 15475 15476Fix for multiple mutex acquisition. Restore original thread SyncLevel on 15477mutex release. 15478 15479Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 15480consistency with the other fields returned. 15481 15482Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 15483structure for each GPE in the system, so the size of this structure is 15484important. 15485 15486CPU stack requirement reduction: Cleaned up the method execution and 15487object 15488evaluation paths so that now a parameter structure is passed, instead of 15489copying the various method parameters over and over again. 15490 15491In evregion.c: Correctly exit and reenter the interpreter region if and 15492only if dispatching an operation region request to a user-installed 15493handler. 15494Do not exit/reenter when dispatching to a default handler (e.g., default 15495system memory or I/O handlers) 15496 15497 15498Notes for updating drivers for the new GPE support. The following 15499changes 15500must be made to ACPI-related device drivers that are attached to one or 15501more 15502GPEs: (This information will be added to the ACPI CA Programmer 15503Reference.) 15504 155051) AcpiInstallGpeHandler no longer automatically enables the GPE, you 15506must 15507explicitly call AcpiEnableGpe. 155082) There is a new interface called AcpiSetGpeType. This should be called 15509before enabling the GPE. Also, this interface will automatically disable 15510the GPE if it is currently enabled. 155113) AcpiEnableGpe no longer supports a GPE type flag. 15512 15513Specific drivers that must be changed: 155141) EC driver: 15515 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 15516AeGpeHandler, NULL); 15517 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 15518 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 15519 155202) Button Drivers (Power, Lid, Sleep): 15521Run _PRW method under parent device 15522If _PRW exists: /* This is a control-method button */ 15523 Extract GPE number and possibly GpeDevice 15524 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 15525 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 15526 15527For all other devices that have _PRWs, we automatically set the GPE type 15528to 15529ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 15530This 15531must be done on a selective basis, usually requiring some kind of user 15532app 15533to allow the user to pick the wake devices. 15534 15535 15536Code and Data Size: Current and previous core subsystem library sizes are 15537shown below. These are the code and data sizes for the acpica.lib 15538produced 15539by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15540any ACPI driver or OSPM code. The debug version of the code includes the 15541debug output trace mechanism and has a much larger code and data size. 15542Note 15543that these values will vary depending on the efficiency of the compiler 15544and 15545the compiler options used during generation. 15546 15547 Previous Release: 15548 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15549 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15550 Current Release: 15551 15552 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15553 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 15554 15555 15556 15557---------------------------------------- 1555802 April 2004. Summary of changes for version 20040402: 15559 155601) ACPI CA Core Subsystem: 15561 15562Fixed an interpreter problem where an indirect store through an ArgX 15563parameter was incorrectly applying the "implicit conversion rules" during 15564the store. From the ACPI specification: "If the target is a method local 15565or 15566argument (LocalX or ArgX), no conversion is performed and the result is 15567stored directly to the target". The new behavior is to disable implicit 15568conversion during ALL stores to an ArgX. 15569 15570Changed the behavior of the _PRW method scan to ignore any and all errors 15571returned by a given _PRW. This prevents the scan from aborting from the 15572failure of any single _PRW. 15573 15574Moved the runtime configuration parameters from the global init procedure 15575to 15576static variables in acglobal.h. This will allow the host to override the 15577default values easily. 15578 15579Code and Data Size: Current and previous core subsystem library sizes are 15580shown below. These are the code and data sizes for the acpica.lib 15581produced 15582by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15583any ACPI driver or OSPM code. The debug version of the code includes the 15584debug output trace mechanism and has a much larger code and data size. 15585Note 15586that these values will vary depending on the efficiency of the compiler 15587and 15588the compiler options used during generation. 15589 15590 Previous Release: 15591 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15592 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15593 Current Release: 15594 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15595 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15596 15597 155982) iASL Compiler/Disassembler: 15599 15600iASL now fully disassembles SSDTs. However, External() statements are 15601not 15602generated automatically for unresolved symbols at this time. This is a 15603planned feature for future implementation. 15604 15605Fixed a scoping problem in the disassembler that occurs when the type of 15606the 15607target of a Scope() operator is overridden. This problem caused an 15608incorrectly nested internal namespace to be constructed. 15609 15610Any warnings or errors that are emitted during disassembly are now 15611commented 15612out automatically so that the resulting file can be recompiled without 15613any 15614hand editing. 15615 15616---------------------------------------- 1561726 March 2004. Summary of changes for version 20040326: 15618 156191) ACPI CA Core Subsystem: 15620 15621Implemented support for "wake" GPEs via interaction between GPEs and the 15622_PRW methods. Every GPE that is pointed to by one or more _PRWs is 15623identified as a WAKE GPE and by default will no longer be enabled at 15624runtime. Previously, we were blindly enabling all GPEs with a 15625corresponding 15626_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 15627We 15628believe this has been the cause of thousands of "spurious" GPEs on some 15629systems. 15630 15631This new GPE behavior is can be reverted to the original behavior (enable 15632ALL GPEs at runtime) via a runtime flag. 15633 15634Fixed a problem where aliased control methods could not access objects 15635properly. The proper scope within the namespace was not initialized 15636(transferred to the target of the aliased method) before executing the 15637target method. 15638 15639Fixed a potential race condition on internal object deletion on the 15640return 15641object in AcpiEvaluateObject. 15642 15643Integrated a fix for resource descriptors where both _MEM and _MTP were 15644being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 15645wide, 0x0F instead of 0x03.) 15646 15647Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 15648preventing 15649a 15650fault in some cases. 15651 15652Updated Notify() values for debug statements in evmisc.c 15653 15654Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 15655 15656Code and Data Size: Current and previous core subsystem library sizes are 15657shown below. These are the code and data sizes for the acpica.lib 15658produced 15659by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15660any ACPI driver or OSPM code. The debug version of the code includes the 15661debug output trace mechanism and has a much larger code and data size. 15662Note 15663that these values will vary depending on the efficiency of the compiler 15664and 15665the compiler options used during generation. 15666 15667 Previous Release: 15668 15669 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15670 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15671 Current Release: 15672 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15673 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15674 15675---------------------------------------- 1567611 March 2004. Summary of changes for version 20040311: 15677 156781) ACPI CA Core Subsystem: 15679 15680Fixed a problem where errors occurring during the parse phase of control 15681method execution did not abort cleanly. For example, objects created and 15682installed in the namespace were not deleted. This caused all subsequent 15683invocations of the method to return the AE_ALREADY_EXISTS exception. 15684 15685Implemented a mechanism to force a control method to "Serialized" 15686execution 15687if the method attempts to create namespace objects. (The root of the 15688AE_ALREADY_EXISTS problem.) 15689 15690Implemented support for the predefined _OSI "internal" control method. 15691Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 15692and 15693"Windows 2001.1", and can be easily upgraded for new strings as 15694necessary. 15695This feature will allow "other" operating systems to execute the fully 15696tested, "Windows" code path through the ASL code 15697 15698Global Lock Support: Now allows multiple acquires and releases with any 15699internal thread. Removed concept of "owning thread" for this special 15700mutex. 15701 15702Fixed two functions that were inappropriately declaring large objects on 15703the 15704CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 15705during 15706method execution considerably. 15707 15708Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 15709S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 15710 15711Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 15712defined on the machine. 15713 15714Implemented two runtime options: One to force all control method 15715execution 15716to "Serialized" to mimic Windows behavior, another to disable _OSI 15717support 15718if it causes problems on a given machine. 15719 15720Code and Data Size: Current and previous core subsystem library sizes are 15721shown below. These are the code and data sizes for the acpica.lib 15722produced 15723by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15724any ACPI driver or OSPM code. The debug version of the code includes the 15725debug output trace mechanism and has a much larger code and data size. 15726Note 15727that these values will vary depending on the efficiency of the compiler 15728and 15729the compiler options used during generation. 15730 15731 Previous Release: 15732 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15733 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15734 Current Release: 15735 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15736 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15737 157382) iASL Compiler/Disassembler: 15739 15740Fixed an array size problem for FreeBSD that would cause the compiler to 15741fault. 15742 15743---------------------------------------- 1574420 February 2004. Summary of changes for version 20040220: 15745 15746 157471) ACPI CA Core Subsystem: 15748 15749Implemented execution of _SxD methods for Device objects in the 15750GetObjectInfo interface. 15751 15752Fixed calls to _SST method to pass the correct arguments. 15753 15754Added a call to _SST on wake to restore to "working" state. 15755 15756Check for End-Of-Buffer failure case in the WalkResources interface. 15757 15758Integrated fix for 64-bit alignment issue in acglobal.h by moving two 15759structures to the beginning of the file. 15760 15761After wake, clear GPE status register(s) before enabling GPEs. 15762 15763After wake, clear/enable power button. (Perhaps we should clear/enable 15764all 15765fixed events upon wake.) 15766 15767Fixed a couple of possible memory leaks in the Namespace manager. 15768 15769Integrated latest acnetbsd.h file. 15770 15771---------------------------------------- 1577211 February 2004. Summary of changes for version 20040211: 15773 15774 157751) ACPI CA Core Subsystem: 15776 15777Completed investigation and implementation of the call-by-reference 15778mechanism for control method arguments. 15779 15780Fixed a problem where a store of an object into an indexed package could 15781fail if the store occurs within a different method than the method that 15782created the package. 15783 15784Fixed a problem where the ToDecimal operator could return incorrect 15785results. 15786 15787Fixed a problem where the CopyObject operator could fail on some of the 15788more 15789obscure objects (e.g., Reference objects.) 15790 15791Improved the output of the Debug object to display buffer, package, and 15792index objects. 15793 15794Fixed a problem where constructs of the form "RefOf (ArgX)" did not 15795return 15796the expected result. 15797 15798Added permanent ACPI_REPORT_ERROR macros for all instances of the 15799ACPI_AML_INTERNAL exception. 15800 15801Integrated latest version of acfreebsd.h 15802 15803---------------------------------------- 1580416 January 2004. Summary of changes for version 20040116: 15805 15806The purpose of this release is primarily to update the copyright years in 15807each module, thus causing a huge number of diffs. There are a few small 15808functional changes, however. 15809 158101) ACPI CA Core Subsystem: 15811 15812Improved error messages when there is a problem finding one or more of 15813the 15814required base ACPI tables 15815 15816Reintroduced the definition of APIC_HEADER in actbl.h 15817 15818Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 15819 15820Removed extraneous reference to NewObj in dsmthdat.c 15821 158222) iASL compiler 15823 15824Fixed a problem introduced in December that disabled the correct 15825disassembly 15826of Resource Templates 15827 15828 15829---------------------------------------- 1583003 December 2003. Summary of changes for version 20031203: 15831 158321) ACPI CA Core Subsystem: 15833 15834Changed the initialization of Operation Regions during subsystem 15835init to perform two entire walks of the ACPI namespace; The first 15836to initialize the regions themselves, the second to execute the 15837_REG methods. This fixed some interdependencies across _REG 15838methods found on some machines. 15839 15840Fixed a problem where a Store(Local0, Local1) could simply update 15841the object reference count, and not create a new copy of the 15842object if the Local1 is uninitialized. 15843 15844Implemented support for the _SST reserved method during sleep 15845transitions. 15846 15847Implemented support to clear the SLP_TYP and SLP_EN bits when 15848waking up, this is apparently required by some machines. 15849 15850When sleeping, clear the wake status only if SleepState is not S5. 15851 15852Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 15853pointer arithmetic advanced a string pointer too far. 15854 15855Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 15856could be returned if the requested table has not been loaded. 15857 15858Within the support for IRQ resources, restructured the handling of 15859the active and edge/level bits. 15860 15861Fixed a few problems in AcpiPsxExecute() where memory could be 15862leaked under certain error conditions. 15863 15864Improved error messages for the cases where the ACPI mode could 15865not be entered. 15866 15867Code and Data Size: Current and previous core subsystem library 15868sizes are shown below. These are the code and data sizes for the 15869acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15870these values do not include any ACPI driver or OSPM code. The 15871debug version of the code includes the debug output trace 15872mechanism and has a much larger code and data size. Note that 15873these values will vary depending on the efficiency of the compiler 15874and the compiler options used during generation. 15875 15876 Previous Release (20031029): 15877 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15878 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15879 Current Release: 15880 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15881 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15882 158832) iASL Compiler/Disassembler: 15884 15885Implemented a fix for the iASL disassembler where a bad index was 15886generated. This was most noticeable on 64-bit platforms 15887 15888 15889---------------------------------------- 1589029 October 2003. Summary of changes for version 20031029: 15891 158921) ACPI CA Core Subsystem: 15893 15894 15895Fixed a problem where a level-triggered GPE with an associated 15896_Lxx control method was incorrectly cleared twice. 15897 15898Fixed a problem with the Field support code where an access can 15899occur beyond the end-of-region if the field is non-aligned but 15900extends to the very end of the parent region (resulted in an 15901AE_AML_REGION_LIMIT exception.) 15902 15903Fixed a problem with ACPI Fixed Events where an RT Clock handler 15904would not get invoked on an RTC event. The RTC event bitmasks for 15905the PM1 registers were not being initialized properly. 15906 15907Implemented support for executing _STA and _INI methods for 15908Processor objects. Although this is currently not part of the 15909ACPI specification, there is existing ASL code that depends on the 15910init-time execution of these methods. 15911 15912Implemented and deployed a GetDescriptorName function to decode 15913the various types of internal descriptors. Guards against null 15914descriptors during debug output also. 15915 15916Implemented and deployed a GetNodeName function to extract the 4- 15917character namespace node name. This function simplifies the debug 15918and error output, as well as guarding against null pointers during 15919output. 15920 15921Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 15922simplify the debug and error output of 64-bit integers. This 15923macro replaces the HIDWORD and LODWORD macros for dumping these 15924integers. 15925 15926Updated the implementation of the Stall() operator to only call 15927AcpiOsStall(), and also return an error if the operand is larger 15928than 255. This preserves the required behavior of not 15929relinquishing the processor, as would happen if AcpiOsSleep() was 15930called for "long stalls". 15931 15932Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 15933initialized are now treated as NOOPs. 15934 15935Cleaned up a handful of warnings during 64-bit generation. 15936 15937Fixed a reported error where and incorrect GPE number was passed 15938to the GPE dispatch handler. This value is only used for error 15939output, however. Used this opportunity to clean up and streamline 15940the GPE dispatch code. 15941 15942Code and Data Size: Current and previous core subsystem library 15943sizes are shown below. These are the code and data sizes for the 15944acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15945these values do not include any ACPI driver or OSPM code. The 15946 15947debug version of the code includes the debug output trace 15948mechanism and has a much larger code and data size. Note that 15949these values will vary depending on the efficiency of the compiler 15950and the compiler options used during generation. 15951 15952 Previous Release (20031002): 15953 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15954 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15955 Current Release: 15956 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15957 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15958 15959 159602) iASL Compiler/Disassembler: 15961 15962Updated the iASL compiler to return an error if the operand to the 15963Stall() operator is larger than 255. 15964 15965 15966---------------------------------------- 1596702 October 2003. Summary of changes for version 20031002: 15968 15969 159701) ACPI CA Core Subsystem: 15971 15972Fixed a problem with Index Fields where the index was not 15973incremented for fields that require multiple writes to the 15974index/data registers (Fields that are wider than the data 15975register.) 15976 15977Fixed a problem with all Field objects where a write could go 15978beyond the end-of-field if the field was larger than the access 15979granularity and therefore required multiple writes to complete the 15980request. An extra write beyond the end of the field could happen 15981inadvertently. 15982 15983Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 15984would incorrectly be returned if the width of the Data Register 15985was larger than the specified field access width. 15986 15987Completed fixes for LoadTable() and Unload() and verified their 15988operation. Implemented full support for the "DdbHandle" object 15989throughout the ACPI CA subsystem. 15990 15991Implemented full support for the MADT and ECDT tables in the ACPI 15992CA header files. Even though these tables are not directly 15993consumed by ACPI CA, the header definitions are useful for ACPI 15994device drivers. 15995 15996Integrated resource descriptor fixes posted to the Linux ACPI 15997list. This included checks for minimum descriptor length, and 15998support for trailing NULL strings within descriptors that have 15999optional string elements. 16000 16001Code and Data Size: Current and previous core subsystem library 16002sizes are shown below. These are the code and data sizes for the 16003acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 16004these values do not include any ACPI driver or OSPM code. The 16005debug version of the code includes the debug output trace 16006mechanism and has a much larger code and data size. Note that 16007these values will vary depending on the efficiency of the compiler 16008and the compiler options used during generation. 16009 16010 Previous Release (20030918): 16011 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 16012 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 16013 Current Release: 16014 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 16015 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 16016 16017 160182) iASL Compiler: 16019 16020Implemented detection of non-ASCII characters within the input 16021source ASL file. This catches attempts to compile binary (AML) 16022files early in the compile, with an informative error message. 16023 16024Fixed a problem where the disassembler would fault if the output 16025filename could not be generated or if the output file could not be 16026opened. 16027 16028---------------------------------------- 1602918 September 2003. Summary of changes for version 20030918: 16030 16031 160321) ACPI CA Core Subsystem: 16033 16034Found and fixed a longstanding problem with the late execution of 16035the various deferred AML opcodes (such as Operation Regions, 16036Buffer Fields, Buffers, and Packages). If the name string 16037specified for the name of the new object placed the object in a 16038scope other than the current scope, the initialization/execution 16039of the opcode failed. The solution to this problem was to 16040implement a mechanism where the late execution of such opcodes 16041does not attempt to lookup/create the name a second time in an 16042incorrect scope. This fixes the "region size computed 16043incorrectly" problem. 16044 16045Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 16046Global Lock AE_BAD_PARAMETER error. 16047 16048Fixed several 64-bit issues with prototypes, casting and data 16049types. 16050 16051Removed duplicate prototype from acdisasm.h 16052 16053Fixed an issue involving EC Operation Region Detach (Shaohua Li) 16054 16055Code and Data Size: Current and previous core subsystem library 16056sizes are shown below. These are the code and data sizes for the 16057acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 16058these values do not include any ACPI driver or OSPM code. The 16059debug version of the code includes the debug output trace 16060mechanism and has a much larger code and data size. Note that 16061these values will vary depending on the efficiency of the compiler 16062and the compiler options used during generation. 16063 16064 Previous Release: 16065 16066 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 16067 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 16068 Current Release: 16069 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 16070 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 16071 16072 160732) Linux: 16074 16075Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 16076correct sleep time in seconds. 16077 16078---------------------------------------- 1607914 July 2003. Summary of changes for version 20030619: 16080 160811) ACPI CA Core Subsystem: 16082 16083Parse SSDTs in order discovered, as opposed to reverse order 16084(Hrvoje Habjanic) 16085 16086Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 16087Klausner, 16088 Nate Lawson) 16089 16090 160912) Linux: 16092 16093Dynamically allocate SDT list (suggested by Andi Kleen) 16094 16095proc function return value cleanups (Andi Kleen) 16096 16097Correctly handle NMI watchdog during long stalls (Andrew Morton) 16098 16099Make it so acpismp=force works (reported by Andrew Morton) 16100 16101 16102---------------------------------------- 1610319 June 2003. Summary of changes for version 20030619: 16104 161051) ACPI CA Core Subsystem: 16106 16107Fix To/FromBCD, eliminating the need for an arch-specific #define. 16108 16109Do not acquire a semaphore in the S5 shutdown path. 16110 16111Fix ex_digits_needed for 0. (Takayoshi Kochi) 16112 16113Fix sleep/stall code reversal. (Andi Kleen) 16114 16115Revert a change having to do with control method calling 16116semantics. 16117 161182) Linux: 16119 16120acpiphp update (Takayoshi Kochi) 16121 16122Export acpi_disabled for sonypi (Stelian Pop) 16123 16124Mention acpismp=force in config help 16125 16126Re-add acpitable.c and acpismp=force. This improves backwards 16127 16128compatibility and also cleans up the code to a significant degree. 16129 16130Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 16131 16132---------------------------------------- 1613322 May 2003. Summary of changes for version 20030522: 16134 161351) ACPI CA Core Subsystem: 16136 16137Found and fixed a reported problem where an AE_NOT_FOUND error 16138occurred occasionally during _BST evaluation. This turned out to 16139be an Owner ID allocation issue where a called method did not get 16140a new ID assigned to it. Eventually, (after 64k calls), the Owner 16141ID UINT16 would wraparound so that the ID would be the same as the 16142caller's and the called method would delete the caller's 16143namespace. 16144 16145Implemented extended error reporting for control methods that are 16146aborted due to a run-time exception. Output includes the exact 16147AML instruction that caused the method abort, a dump of the method 16148locals and arguments at the time of the abort, and a trace of all 16149nested control method calls. 16150 16151Modified the interpreter to allow the creation of buffers of zero 16152length from the AML code. Implemented new code to ensure that no 16153attempt is made to actually allocate a memory buffer (of length 16154zero) - instead, a simple buffer object with a NULL buffer pointer 16155and length zero is created. A warning is no longer issued when 16156the AML attempts to create a zero-length buffer. 16157 16158Implemented a workaround for the "leading asterisk issue" in 16159_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 16160asterisk is automatically removed if present in any HID, UID, or 16161CID strings. The iASL compiler will still flag this asterisk as 16162an error, however. 16163 16164Implemented full support for _CID methods that return a package of 16165multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 16166now additionally returns a device _CID list if present. This 16167required a change to the external interface in order to pass an 16168ACPI_BUFFER object as a parameter since the _CID list is of 16169variable length. 16170 16171Fixed a problem with the new AE_SAME_HANDLER exception where 16172handler initialization code did not know about this exception. 16173 16174Code and Data Size: Current and previous core subsystem library 16175sizes are shown below. These are the code and data sizes for the 16176acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 16177these values do not include any ACPI driver or OSPM code. The 16178debug version of the code includes the debug output trace 16179mechanism and has a much larger code and data size. Note that 16180these values will vary depending on the efficiency of the compiler 16181and the compiler options used during generation. 16182 16183 Previous Release (20030509): 16184 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 16185 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 16186 Current Release: 16187 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 16188 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 16189 16190 161912) Linux: 16192 16193Fixed a bug in which we would reinitialize the ACPI interrupt 16194after it was already working, thus disabling all ACPI and the IRQs 16195for any other device sharing the interrupt. (Thanks to Stian 16196Jordet) 16197 16198Toshiba driver update (John Belmonte) 16199 16200Return only 0 or 1 for our interrupt handler status (Andrew 16201Morton) 16202 16203 162043) iASL Compiler: 16205 16206Fixed a reported problem where multiple (nested) ElseIf() 16207statements were not handled correctly by the compiler, resulting 16208in incorrect warnings and incorrect AML code. This was a problem 16209in both the ASL parser and the code generator. 16210 16211 162124) Documentation: 16213 16214Added changes to existing interfaces, new exception codes, and new 16215text concerning reference count object management versus garbage 16216collection. 16217 16218---------------------------------------- 1621909 May 2003. Summary of changes for version 20030509. 16220 16221 162221) ACPI CA Core Subsystem: 16223 16224Changed the subsystem initialization sequence to hold off 16225installation of address space handlers until the hardware has been 16226initialized and the system has entered ACPI mode. This is because 16227the installation of space handlers can cause _REG methods to be 16228run. Previously, the _REG methods could potentially be run before 16229ACPI mode was enabled. 16230 16231Fixed some memory leak issues related to address space handler and 16232notify handler installation. There were some problems with the 16233reference count mechanism caused by the fact that the handler 16234objects are shared across several namespace objects. 16235 16236Fixed a reported problem where reference counts within the 16237namespace were not properly updated when named objects created by 16238method execution were deleted. 16239 16240Fixed a reported problem where multiple SSDTs caused a deletion 16241issue during subsystem termination. Restructured the table data 16242structures to simplify the linked lists and the related code. 16243 16244Fixed a problem where the table ID associated with secondary 16245tables (SSDTs) was not being propagated into the namespace objects 16246created by those tables. This would only present a problem for 16247tables that are unloaded at run-time, however. 16248 16249Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 16250type as the length parameter (instead of UINT32). 16251 16252Solved a long-standing problem where an ALREADY_EXISTS error 16253appears on various systems. This problem could happen when there 16254are multiple PCI_Config operation regions under a single PCI root 16255bus. This doesn't happen very frequently, but there are some 16256systems that do this in the ASL. 16257 16258Fixed a reported problem where the internal DeleteNode function 16259was incorrectly handling the case where a namespace node was the 16260first in the parent's child list, and had additional peers (not 16261the only child, but first in the list of children.) 16262 16263Code and Data Size: Current core subsystem library sizes are shown 16264below. These are the code and data sizes for the acpica.lib 16265produced by the Microsoft Visual C++ 6.0 compiler, and these 16266values do not include any ACPI driver or OSPM code. The debug 16267version of the code includes the debug output trace mechanism and 16268has a much larger code and data size. Note that these values will 16269vary depending on the efficiency of the compiler and the compiler 16270options used during generation. 16271 16272 Previous Release 16273 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 16274 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 16275 Current Release: 16276 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 16277 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 16278 16279 162802) Linux: 16281 16282Allow ":" in OS override string (Ducrot Bruno) 16283 16284Kobject fix (Greg KH) 16285 16286 162873 iASL Compiler/Disassembler: 16288 16289Fixed a problem in the generation of the C source code files (AML 16290is emitted in C source statements for BIOS inclusion) where the 16291Ascii dump that appears within a C comment at the end of each line 16292could cause a compile time error if the AML sequence happens to 16293have an open comment or close comment sequence embedded. 16294 16295 16296---------------------------------------- 1629724 April 2003. Summary of changes for version 20030424. 16298 16299 163001) ACPI CA Core Subsystem: 16301 16302Support for big-endian systems has been implemented. Most of the 16303support has been invisibly added behind big-endian versions of the 16304ACPI_MOVE_* macros. 16305 16306Fixed a problem in AcpiHwDisableGpeBlock() and 16307AcpiHwClearGpeBlock() where an incorrect offset was passed to the 16308low level hardware write routine. The offset parameter was 16309actually eliminated from the low level read/write routines because 16310they had become obsolete. 16311 16312Fixed a problem where a handler object was deleted twice during 16313the removal of a fixed event handler. 16314 16315 163162) Linux: 16317 16318A fix for SMP systems with link devices was contributed by 16319 16320Compaq's Dan Zink. 16321 16322(2.5) Return whether we handled the interrupt in our IRQ handler. 16323(Linux ISRs no longer return void, so we can propagate the handler 16324return value from the ACPI CA core back to the OS.) 16325 16326 16327 163283) Documentation: 16329 16330The ACPI CA Programmer Reference has been updated to reflect new 16331interfaces and changes to existing interfaces. 16332 16333---------------------------------------- 1633428 March 2003. Summary of changes for version 20030328. 16335 163361) ACPI CA Core Subsystem: 16337 16338The GPE Block Device support has been completed. New interfaces 16339are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 16340interfaces (enable, disable, clear, getstatus) have been split 16341into separate interfaces for Fixed Events and General Purpose 16342Events (GPEs) in order to support GPE Block Devices properly. 16343 16344Fixed a problem where the error message "Failed to acquire 16345semaphore" would appear during operations on the embedded 16346controller (EC). 16347 16348Code and Data Size: Current core subsystem library sizes are shown 16349below. These are the code and data sizes for the acpica.lib 16350produced by the Microsoft Visual C++ 6.0 compiler, and these 16351values do not include any ACPI driver or OSPM code. The debug 16352version of the code includes the debug output trace mechanism and 16353has a much larger code and data size. Note that these values will 16354vary depending on the efficiency of the compiler and the compiler 16355options used during generation. 16356 16357 Previous Release 16358 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 16359 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 16360 Current Release: 16361 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 16362 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 16363 16364 16365---------------------------------------- 1636628 February 2003. Summary of changes for version 20030228. 16367 16368 163691) ACPI CA Core Subsystem: 16370 16371The GPE handling and dispatch code has been completely overhauled 16372in preparation for support of GPE Block Devices (ID ACPI0006). 16373This affects internal data structures and code only; there should 16374be no differences visible externally. One new file has been 16375added, evgpeblk.c 16376 16377The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 16378fields that are used to determine the GPE block lengths. The 16379REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 16380structures are ignored. This is per the ACPI specification but it 16381isn't very clear. The full 256 Block 0/1 GPEs are now supported 16382(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 16383 16384In the SCI interrupt handler, removed the read of the PM1_CONTROL 16385register to look at the SCI_EN bit. On some machines, this read 16386causes an SMI event and greatly slows down SCI events. (This may 16387in fact be the cause of slow battery status response on some 16388systems.) 16389 16390Fixed a problem where a store of a NULL string to a package object 16391could cause the premature deletion of the object. This was seen 16392during execution of the battery _BIF method on some systems, 16393resulting in no battery data being returned. 16394 16395Added AcpiWalkResources interface to simplify parsing of resource 16396lists. 16397 16398Code and Data Size: Current core subsystem library sizes are shown 16399below. These are the code and data sizes for the acpica.lib 16400produced by the Microsoft Visual C++ 6.0 compiler, and these 16401values do not include any ACPI driver or OSPM code. The debug 16402version of the code includes the debug output trace mechanism and 16403has a much larger code and data size. Note that these values will 16404vary depending on the efficiency of the compiler and the compiler 16405options used during generation. 16406 16407 Previous Release 16408 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16409 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16410 Current Release: 16411 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 16412 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 16413 16414 164152) Linux 16416 16417S3 fixes (Ole Rohne) 16418 16419Update ACPI PHP driver with to use new acpi_walk_resource API 16420(Bjorn Helgaas) 16421 16422Add S4BIOS support (Pavel Machek) 16423 16424Map in entire table before performing checksum (John Stultz) 16425 16426Expand the mem= cmdline to allow the specification of reserved and 16427ACPI DATA blocks (Pavel Machek) 16428 16429Never use ACPI on VISWS 16430 16431Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 16432 16433Revert a change that allowed P_BLK lengths to be 4 or 5. This is 16434causing us to think that some systems support C2 when they really 16435don't. 16436 16437Do not count processor objects for non-present CPUs (Thanks to 16438Dominik Brodowski) 16439 16440 164413) iASL Compiler: 16442 16443Fixed a problem where ASL include files could not be found and 16444opened. 16445 16446Added support for the _PDC reserved name. 16447 16448 16449---------------------------------------- 1645022 January 2003. Summary of changes for version 20030122. 16451 16452 164531) ACPI CA Core Subsystem: 16454 16455Added a check for constructs of the form: Store (Local0, Local0) 16456where Local0 is not initialized. Apparently, some BIOS 16457programmers believe that this is a NOOP. Since this store doesn't 16458do anything anyway, the new prototype behavior will ignore this 16459error. This is a case where we can relax the strict checking in 16460the interpreter in the name of compatibility. 16461 16462 164632) Linux 16464 16465The AcpiSrc Source Conversion Utility has been released with the 16466Linux package for the first time. This is the utility that is 16467used to convert the ACPI CA base source code to the Linux version. 16468 16469(Both) Handle P_BLK lengths shorter than 6 more gracefully 16470 16471(Both) Move more headers to include/acpi, and delete an unused 16472header. 16473 16474(Both) Move drivers/acpi/include directory to include/acpi 16475 16476(Both) Boot functions don't use cmdline, so don't pass it around 16477 16478(Both) Remove include of unused header (Adrian Bunk) 16479 16480(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 16481the 16482former now also includes the latter, acpiphp.h only needs the one, 16483now. 16484 16485(2.5) Make it possible to select method of bios restoring after S3 16486resume. [=> no more ugly ifdefs] (Pavel Machek) 16487 16488(2.5) Make proc write interfaces work (Pavel Machek) 16489 16490(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 16491 16492(2.5) Break out ACPI Perf code into its own module, under cpufreq 16493(Dominik Brodowski) 16494 16495(2.4) S4BIOS support (Ducrot Bruno) 16496 16497(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 16498Visinoni) 16499 16500 165013) iASL Compiler: 16502 16503Added support to disassemble SSDT and PSDTs. 16504 16505Implemented support to obtain SSDTs from the Windows registry if 16506available. 16507 16508 16509---------------------------------------- 1651009 January 2003. Summary of changes for version 20030109. 16511 165121) ACPI CA Core Subsystem: 16513 16514Changed the behavior of the internal Buffer-to-String conversion 16515function. The current ACPI specification states that the contents 16516of the buffer are "converted to a string of two-character 16517hexadecimal numbers, each separated by a space". Unfortunately, 16518this definition is not backwards compatible with existing ACPI 1.0 16519implementations (although the behavior was not defined in the ACPI 165201.0 specification). The new behavior simply copies data from the 16521buffer to the string until a null character is found or the end of 16522the buffer is reached. The new String object is always null 16523terminated. This problem was seen during the generation of _BIF 16524battery data where incorrect strings were returned for battery 16525type, etc. This will also require an errata to the ACPI 16526specification. 16527 16528Renamed all instances of NATIVE_UINT and NATIVE_INT to 16529ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 16530 16531Copyright in all module headers (both Linux and non-Linux) has be 16532updated to 2003. 16533 16534Code and Data Size: Current core subsystem library sizes are shown 16535below. These are the code and data sizes for the acpica.lib 16536produced by the Microsoft Visual C++ 6.0 compiler, and these 16537values do not include any ACPI driver or OSPM code. The debug 16538version of the code includes the debug output trace mechanism and 16539has a much larger code and data size. Note that these values will 16540vary depending on the efficiency of the compiler and the compiler 16541options used during generation. 16542 16543 Previous Release 16544 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16545 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16546 Current Release: 16547 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16548 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16549 16550 165512) Linux 16552 16553Fixed an oops on module insertion/removal (Matthew Tippett) 16554 16555(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 16556 16557(2.5) Replace pr_debug (Randy Dunlap) 16558 16559(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 16560 16561(Both) Eliminate spawning of thread from timer callback, in favor 16562of schedule_work() 16563 16564(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 16565 16566(Both) Added define for Fixed Function HW region (Matthew Wilcox) 16567 16568(Both) Add missing statics to button.c (Pavel Machek) 16569 16570Several changes have been made to the source code translation 16571utility that generates the Linux Code in order to make the code 16572more "Linux-like": 16573 16574All typedefs on structs and unions have been removed in keeping 16575with the Linux coding style. 16576 16577Removed the non-Linux SourceSafe module revision number from each 16578module header. 16579 16580Completed major overhaul of symbols to be lowercase for linux. 16581Doubled the number of symbols that are lowercase. 16582 16583Fixed a problem where identifiers within procedure headers and 16584within quotes were not fully lower cased (they were left with a 16585starting capital.) 16586 16587Some C macros whose only purpose is to allow the generation of 16- 16588bit code are now completely removed in the Linux code, increasing 16589readability and maintainability. 16590 16591---------------------------------------- 16592 1659312 December 2002. Summary of changes for version 20021212. 16594 16595 165961) ACPI CA Core Subsystem: 16597 16598Fixed a problem where the creation of a zero-length AML Buffer 16599would cause a fault. 16600 16601Fixed a problem where a Buffer object that pointed to a static AML 16602buffer (in an ACPI table) could inadvertently be deleted, causing 16603memory corruption. 16604 16605Fixed a problem where a user buffer (passed in to the external 16606ACPI CA interfaces) could be overwritten if the buffer was too 16607small to complete the operation, causing memory corruption. 16608 16609Fixed a problem in the Buffer-to-String conversion code where a 16610string of length one was always returned, regardless of the size 16611of the input Buffer object. 16612 16613Removed the NATIVE_CHAR data type across the entire source due to 16614lack of need and lack of consistent use. 16615 16616Code and Data Size: Current core subsystem library sizes are shown 16617below. These are the code and data sizes for the acpica.lib 16618produced by the Microsoft Visual C++ 6.0 compiler, and these 16619values do not include any ACPI driver or OSPM code. The debug 16620version of the code includes the debug output trace mechanism and 16621has a much larger code and data size. Note that these values will 16622vary depending on the efficiency of the compiler and the compiler 16623options used during generation. 16624 16625 Previous Release 16626 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16627 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16628 Current Release: 16629 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16630 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16631 16632 16633---------------------------------------- 1663405 December 2002. Summary of changes for version 20021205. 16635 166361) ACPI CA Core Subsystem: 16637 16638Fixed a problem where a store to a String or Buffer object could 16639cause corruption of the DSDT if the object type being stored was 16640the same as the target object type and the length of the object 16641being stored was equal to or smaller than the original (existing) 16642target object. This was seen to cause corruption of battery _BIF 16643buffers if the _BIF method modified the buffer on the fly. 16644 16645Fixed a problem where an internal error was generated if a control 16646method invocation was used in an OperationRegion, Buffer, or 16647Package declaration. This was caused by the deferred parsing of 16648the control method and thus the deferred creation of the internal 16649method object. The solution to this problem was to create the 16650internal method object at the moment the method is encountered in 16651the first pass - so that subsequent references to the method will 16652able to obtain the required parameter count and thus properly 16653parse the method invocation. This problem presented itself as an 16654AE_AML_INTERNAL during the pass 1 parse phase during table load. 16655 16656Fixed a problem where the internal String object copy routine did 16657not always allocate sufficient memory for the target String object 16658and caused memory corruption. This problem was seen to cause 16659"Allocation already present in list!" errors as memory allocation 16660became corrupted. 16661 16662Implemented a new function for the evaluation of namespace objects 16663that allows the specification of the allowable return object 16664types. This simplifies a lot of code that checks for a return 16665object of one or more specific objects returned from the 16666evaluation (such as _STA, etc.) This may become and external 16667function if it would be useful to ACPI-related drivers. 16668 16669Completed another round of prefixing #defines with "ACPI_" for 16670clarity. 16671 16672Completed additional code restructuring to allow more modular 16673linking for iASL compiler and AcpiExec. Several files were split 16674creating new files. New files: nsparse.c dsinit.c evgpe.c 16675 16676Implemented an abort mechanism to terminate an executing control 16677method via the AML debugger. This feature is useful for debugging 16678control methods that depend (wait) for specific hardware 16679responses. 16680 16681Code and Data Size: Current core subsystem library sizes are shown 16682below. These are the code and data sizes for the acpica.lib 16683produced by the Microsoft Visual C++ 6.0 compiler, and these 16684values do not include any ACPI driver or OSPM code. The debug 16685version of the code includes the debug output trace mechanism and 16686has a much larger code and data size. Note that these values will 16687vary depending on the efficiency of the compiler and the compiler 16688options used during generation. 16689 16690 Previous Release 16691 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16692 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16693 Current Release: 16694 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16695 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16696 16697 166982) iASL Compiler/Disassembler 16699 16700Fixed a compiler code generation problem for "Interrupt" Resource 16701Descriptors. If specified in the ASL, the optional "Resource 16702Source Index" and "Resource Source" fields were not inserted into 16703the correct location within the AML resource descriptor, creating 16704an invalid descriptor. 16705 16706Fixed a disassembler problem for "Interrupt" resource descriptors. 16707The optional "Resource Source Index" and "Resource Source" fields 16708were ignored. 16709 16710 16711---------------------------------------- 1671222 November 2002. Summary of changes for version 20021122. 16713 16714 167151) ACPI CA Core Subsystem: 16716 16717Fixed a reported problem where an object stored to a Method Local 16718or Arg was not copied to a new object during the store - the 16719object pointer was simply copied to the Local/Arg. This caused 16720all subsequent operations on the Local/Arg to also affect the 16721original source of the store operation. 16722 16723Fixed a problem where a store operation to a Method Local or Arg 16724was not completed properly if the Local/Arg contained a reference 16725(from RefOf) to a named field. The general-purpose store-to- 16726namespace-node code is now used so that this case is handled 16727automatically. 16728 16729Fixed a problem where the internal object copy routine would cause 16730a protection fault if the object being copied was a Package and 16731contained either 1) a NULL package element or 2) a nested sub- 16732package. 16733 16734Fixed a problem with the GPE initialization that resulted from an 16735ambiguity in the ACPI specification. One section of the 16736specification states that both the address and length of the GPE 16737block must be zero if the block is not supported. Another section 16738implies that only the address need be zero if the block is not 16739supported. The code has been changed so that both the address and 16740the length must be non-zero to indicate a valid GPE block (i.e., 16741if either the address or the length is zero, the GPE block is 16742invalid.) 16743 16744Code and Data Size: Current core subsystem library sizes are shown 16745below. These are the code and data sizes for the acpica.lib 16746produced by the Microsoft Visual C++ 6.0 compiler, and these 16747values do not include any ACPI driver or OSPM code. The debug 16748version of the code includes the debug output trace mechanism and 16749has a much larger code and data size. Note that these values will 16750vary depending on the efficiency of the compiler and the compiler 16751options used during generation. 16752 16753 Previous Release 16754 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16755 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16756 Current Release: 16757 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16758 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16759 16760 167612) Linux 16762 16763Cleaned up EC driver. Exported an external EC read/write 16764interface. By going through this, other drivers (most notably 16765sonypi) will be able to serialize access to the EC. 16766 16767 167683) iASL Compiler/Disassembler 16769 16770Implemented support to optionally generate include files for both 16771ASM and C (the -i switch). This simplifies BIOS development by 16772automatically creating include files that contain external 16773declarations for the symbols that are created within the 16774 16775(optionally generated) ASM and C AML source files. 16776 16777 16778---------------------------------------- 1677915 November 2002. Summary of changes for version 20021115. 16780 167811) ACPI CA Core Subsystem: 16782 16783Fixed a memory leak problem where an error during resolution of 16784 16785method arguments during a method invocation from another method 16786failed to cleanup properly by deleting all successfully resolved 16787argument objects. 16788 16789Fixed a problem where the target of the Index() operator was not 16790correctly constructed if the source object was a package. This 16791problem has not been detected because the use of a target operand 16792with Index() is very rare. 16793 16794Fixed a problem with the Index() operator where an attempt was 16795made to delete the operand objects twice. 16796 16797Fixed a problem where an attempt was made to delete an operand 16798twice during execution of the CondRefOf() operator if the target 16799did not exist. 16800 16801Implemented the first of perhaps several internal create object 16802functions that create and initialize a specific object type. This 16803consolidates duplicated code wherever the object is created, thus 16804shrinking the size of the subsystem. 16805 16806Implemented improved debug/error messages for errors that occur 16807during nested method invocations. All executing method pathnames 16808are displayed (with the error) as the call stack is unwound - thus 16809simplifying debug. 16810 16811Fixed a problem introduced in the 10/02 release that caused 16812premature deletion of a buffer object if a buffer was used as an 16813ASL operand where an integer operand is required (Thus causing an 16814implicit object conversion from Buffer to Integer.) The change in 16815the 10/02 release was attempting to fix a memory leak (albeit 16816incorrectly.) 16817 16818Code and Data Size: Current core subsystem library sizes are shown 16819below. These are the code and data sizes for the acpica.lib 16820produced by the Microsoft Visual C++ 6.0 compiler, and these 16821values do not include any ACPI driver or OSPM code. The debug 16822version of the code includes the debug output trace mechanism and 16823has a much larger code and data size. Note that these values will 16824vary depending on the efficiency of the compiler and the compiler 16825options used during generation. 16826 16827 Previous Release 16828 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16829 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16830 Current Release: 16831 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16832 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16833 16834 168352) Linux 16836 16837Changed the implementation of the ACPI semaphores to use down() 16838instead of down_interruptable(). It is important that the 16839execution of ACPI control methods not be interrupted by signals. 16840Methods must run to completion, or the system may be left in an 16841unknown/unstable state. 16842 16843Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 16844(Shawn Starr) 16845 16846 168473) iASL Compiler/Disassembler 16848 16849 16850Changed the default location of output files. All output files 16851are now placed in the current directory by default instead of in 16852the directory of the source file. This change may affect some 16853existing makefiles, but it brings the behavior of the compiler in 16854line with other similar tools. The location of the output files 16855can be overridden with the -p command line switch. 16856 16857 16858---------------------------------------- 1685911 November 2002. Summary of changes for version 20021111. 16860 16861 168620) ACPI Specification 2.0B is released and is now available at: 16863http://www.acpi.info/index.html 16864 16865 168661) ACPI CA Core Subsystem: 16867 16868Implemented support for the ACPI 2.0 SMBus Operation Regions. 16869This includes the early detection and handoff of the request to 16870the SMBus region handler (avoiding all of the complex field 16871support code), and support for the bidirectional return packet 16872from an SMBus write operation. This paves the way for the 16873development of SMBus drivers in each host operating system. 16874 16875Fixed a problem where the semaphore WAIT_FOREVER constant was 16876defined as 32 bits, but must be 16 bits according to the ACPI 16877specification. This had the side effect of causing ASL 16878Mutex/Event timeouts even though the ASL code requested a wait 16879forever. Changed all internal references to the ACPI timeout 16880parameter to 16 bits to prevent future problems. Changed the name 16881of WAIT_FOREVER to ACPI_WAIT_FOREVER. 16882 16883Code and Data Size: Current core subsystem library sizes are shown 16884below. These are the code and data sizes for the acpica.lib 16885produced by the Microsoft Visual C++ 6.0 compiler, and these 16886values do not include any ACPI driver or OSPM code. The debug 16887version of the code includes the debug output trace mechanism and 16888has a much larger code and data size. Note that these values will 16889vary depending on the efficiency of the compiler and the compiler 16890options used during generation. 16891 16892 Previous Release 16893 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16894 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16895 Current Release: 16896 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16897 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16898 16899 169002) Linux 16901 16902Module loading/unloading fixes (John Cagle) 16903 16904 169053) iASL Compiler/Disassembler 16906 16907Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 16908 16909Implemented support for the disassembly of all SMBus protocol 16910keywords (SMBQuick, SMBWord, etc.) 16911 16912---------------------------------------- 1691301 November 2002. Summary of changes for version 20021101. 16914 16915 169161) ACPI CA Core Subsystem: 16917 16918Fixed a problem where platforms that have a GPE1 block but no GPE0 16919block were not handled correctly. This resulted in a "GPE 16920overlap" error message. GPE0 is no longer required. 16921 16922Removed code added in the previous release that inserted nodes 16923into the namespace in alphabetical order. This caused some side- 16924effects on various machines. The root cause of the problem is 16925still under investigation since in theory, the internal ordering 16926of the namespace nodes should not matter. 16927 16928 16929Enhanced error reporting for the case where a named object is not 16930found during control method execution. The full ACPI namepath 16931(name reference) of the object that was not found is displayed in 16932this case. 16933 16934Note: as a result of the overhaul of the namespace object types in 16935the previous release, the namespace nodes for the predefined 16936scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 16937instead of ACPI_TYPE_ANY. This simplifies the namespace 16938management code but may affect code that walks the namespace tree 16939looking for specific object types. 16940 16941Code and Data Size: Current core subsystem library sizes are shown 16942below. These are the code and data sizes for the acpica.lib 16943produced by the Microsoft Visual C++ 6.0 compiler, and these 16944values do not include any ACPI driver or OSPM code. The debug 16945version of the code includes the debug output trace mechanism and 16946has a much larger code and data size. Note that these values will 16947vary depending on the efficiency of the compiler and the compiler 16948options used during generation. 16949 16950 Previous Release 16951 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 16952 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 16953 Current Release: 16954 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16955 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16956 16957 169582) Linux 16959 16960Fixed a problem introduced in the previous release where the 16961Processor and Thermal objects were not recognized and installed in 16962/proc. This was related to the scope type change described above. 16963 16964 169653) iASL Compiler/Disassembler 16966 16967Implemented the -g option to get all of the required ACPI tables 16968from the registry and save them to files (Windows version of the 16969compiler only.) The required tables are the FADT, FACS, and DSDT. 16970 16971Added ACPI table checksum validation during table disassembly in 16972order to catch corrupted tables. 16973 16974 16975---------------------------------------- 1697622 October 2002. Summary of changes for version 20021022. 16977 169781) ACPI CA Core Subsystem: 16979 16980Implemented a restriction on the Scope operator that the target 16981must already exist in the namespace at the time the operator is 16982encountered (during table load or method execution). In other 16983words, forward references are not allowed and Scope() cannot 16984create a new object. This changes the previous behavior where the 16985interpreter would create the name if not found. This new behavior 16986correctly enables the search-to-root algorithm during namespace 16987lookup of the target name. Because of this upsearch, this fixes 16988the known Compaq _SB_.OKEC problem and makes both the AML 16989interpreter and iASL compiler compatible with other ACPI 16990implementations. 16991 16992Completed a major overhaul of the internal ACPI object types for 16993the ACPI Namespace and the associated operand objects. Many of 16994these types had become obsolete with the introduction of the two- 16995pass namespace load. This cleanup simplifies the code and makes 16996the entire namespace load mechanism much clearer and easier to 16997understand. 16998 16999Improved debug output for tracking scope opening/closing to help 17000diagnose scoping issues. The old scope name as well as the new 17001scope name are displayed. Also improved error messages for 17002problems with ASL Mutex objects and error messages for GPE 17003problems. 17004 17005Cleaned up the namespace dump code, removed obsolete code. 17006 17007All string output (for all namespace/object dumps) now uses the 17008common ACPI string output procedure which handles escapes properly 17009and does not emit non-printable characters. 17010 17011Fixed some issues with constants in the 64-bit version of the 17012local C library (utclib.c) 17013 17014 170152) Linux 17016 17017EC Driver: No longer attempts to acquire the Global Lock at 17018interrupt level. 17019 17020 170213) iASL Compiler/Disassembler 17022 17023Implemented ACPI 2.0B grammar change that disallows all Type 1 and 170242 opcodes outside of a control method. This means that the 17025"executable" operators (versus the "namespace" operators) cannot 17026be used at the table level; they can only be used within a control 17027method. 17028 17029Implemented the restriction on the Scope() operator where the 17030target must already exist in the namespace at the time the 17031operator is encountered (during ASL compilation). In other words, 17032forward references are not allowed and Scope() cannot create a new 17033object. This makes the iASL compiler compatible with other ACPI 17034implementations and makes the Scope() implementation adhere to the 17035ACPI specification. 17036 17037Fixed a problem where namepath optimization for the Alias operator 17038was optimizing the wrong path (of the two namepaths.) This caused 17039a "Missing alias link" error message. 17040 17041Fixed a problem where an "unknown reserved name" warning could be 17042incorrectly generated for names like "_SB" when the trailing 17043underscore is not used in the original ASL. 17044 17045Fixed a problem where the reserved name check did not handle 17046NamePaths with multiple NameSegs correctly. The first nameseg of 17047the NamePath was examined instead of the last NameSeg. 17048 17049 17050---------------------------------------- 17051 1705202 October 2002. Summary of changes for this release. 17053 17054 170551) ACPI CA Core Subsystem version 20021002: 17056 17057Fixed a problem where a store/copy of a string to an existing 17058string did not always set the string length properly in the String 17059object. 17060 17061Fixed a reported problem with the ToString operator where the 17062behavior was identical to the ToHexString operator instead of just 17063simply converting a raw buffer to a string data type. 17064 17065Fixed a problem where CopyObject and the other "explicit" 17066conversion operators were not updating the internal namespace node 17067type as part of the store operation. 17068 17069Fixed a memory leak during implicit source operand conversion 17070where the original object was not deleted if it was converted to a 17071new object of a different type. 17072 17073Enhanced error messages for all problems associated with namespace 17074lookups. Common procedure generates and prints the lookup name as 17075well as the formatted status. 17076 17077Completed implementation of a new design for the Alias support 17078within the namespace. The existing design did not handle the case 17079where a new object was assigned to one of the two names due to the 17080use of an explicit conversion operator, resulting in the two names 17081pointing to two different objects. The new design simply points 17082the Alias name to the original name node - not to the object. 17083This results in a level of indirection that must be handled in the 17084name resolution mechanism. 17085 17086Code and Data Size: Current core subsystem library sizes are shown 17087below. These are the code and data sizes for the acpica.lib 17088produced by the Microsoft Visual C++ 6.0 compiler, and these 17089values do not include any ACPI driver or OSPM code. The debug 17090version of the code includes the debug output trace mechanism and 17091has a larger code and data size. Note that these values will vary 17092depending on the efficiency of the compiler and the compiler 17093options used during generation. 17094 17095 Previous Release 17096 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 17097 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 17098 Current Release: 17099 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 17100 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 17101 17102 171032) Linux 17104 17105Initialize thermal driver's timer before it is used. (Knut 17106Neumann) 17107 17108Allow handling negative celsius values. (Kochi Takayoshi) 17109 17110Fix thermal management and make trip points. R/W (Pavel Machek) 17111 17112Fix /proc/acpi/sleep. (P. Christeas) 17113 17114IA64 fixes. (David Mosberger) 17115 17116Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 17117 17118Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 17119Brodowski) 17120 17121 171223) iASL Compiler/Disassembler 17123 17124Clarified some warning/error messages. 17125 17126 17127---------------------------------------- 1712818 September 2002. Summary of changes for this release. 17129 17130 171311) ACPI CA Core Subsystem version 20020918: 17132 17133Fixed a reported problem with reference chaining (via the Index() 17134and RefOf() operators) in the ObjectType() and SizeOf() operators. 17135The definition of these operators includes the dereferencing of 17136all chained references to return information on the base object. 17137 17138Fixed a problem with stores to indexed package elements - the 17139existing code would not complete the store if an "implicit 17140conversion" was not performed. In other words, if the existing 17141object (package element) was to be replaced completely, the code 17142didn't handle this case. 17143 17144Relaxed typechecking on the ASL "Scope" operator to allow the 17145target name to refer to an object of type Integer, String, or 17146Buffer, in addition to the scoping object types (Device, 17147predefined Scopes, Processor, PowerResource, and ThermalZone.) 17148This allows existing AML code that has workarounds for a bug in 17149Windows to function properly. A warning is issued, however. This 17150affects both the AML interpreter and the iASL compiler. Below is 17151an example of this type of ASL code: 17152 17153 Name(DEB,0x00) 17154 Scope(DEB) 17155 { 17156 17157Fixed some reported problems with 64-bit integer support in the 17158local implementation of C library functions (clib.c) 17159 17160 171612) Linux 17162 17163Use ACPI fix map region instead of IOAPIC region, since it is 17164undefined in non-SMP. 17165 17166Ensure that the SCI has the proper polarity and trigger, even on 17167systems that do not have an interrupt override entry in the MADT. 17168 171692.5 big driver reorganization (Pat Mochel) 17170 17171Use early table mapping code from acpitable.c (Andi Kleen) 17172 17173New blacklist entries (Andi Kleen) 17174 17175Blacklist improvements. Split blacklist code out into a separate 17176file. Move checking the blacklist to very early. Previously, we 17177would use ACPI tables, and then halfway through init, check the 17178blacklist -- too late. Now, it's early enough to completely fall- 17179back to non-ACPI. 17180 17181 171823) iASL Compiler/Disassembler version 20020918: 17183 17184Fixed a problem where the typechecking code didn't know that an 17185alias could point to a method. In other words, aliases were not 17186being dereferenced during typechecking. 17187 17188 17189---------------------------------------- 1719029 August 2002. Summary of changes for this release. 17191 171921) ACPI CA Core Subsystem Version 20020829: 17193 17194If the target of a Scope() operator already exists, it must be an 17195object type that actually opens a scope -- such as a Device, 17196Method, Scope, etc. This is a fatal runtime error. Similar error 17197check has been added to the iASL compiler also. 17198 17199Tightened up the namespace load to disallow multiple names in the 17200same scope. This previously was allowed if both objects were of 17201the same type. (i.e., a lookup was the same as entering a new 17202name). 17203 17204 172052) Linux 17206 17207Ensure that the ACPI interrupt has the proper trigger and 17208polarity. 17209 17210local_irq_disable is extraneous. (Matthew Wilcox) 17211 17212Make "acpi=off" actually do what it says, and not use the ACPI 17213interpreter *or* the tables. 17214 17215Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 17216Takayoshi) 17217 17218 172193) iASL Compiler/Disassembler Version 20020829: 17220 17221Implemented namepath optimization for name declarations. For 17222example, a declaration like "Method (\_SB_.ABCD)" would get 17223optimized to "Method (ABCD)" if the declaration is within the 17224\_SB_ scope. This optimization is in addition to the named 17225reference path optimization first released in the previous 17226version. This would seem to complete all possible optimizations 17227for namepaths within the ASL/AML. 17228 17229If the target of a Scope() operator already exists, it must be an 17230object type that actually opens a scope -- such as a Device, 17231Method, Scope, etc. 17232 17233Implemented a check and warning for unreachable code in the same 17234block below a Return() statement. 17235 17236Fixed a problem where the listing file was not generated if the 17237compiler aborted if the maximum error count was exceeded (200). 17238 17239Fixed a problem where the typechecking of method return values was 17240broken. This includes the check for a return value when the 17241method is invoked as a TermArg (a return value is expected.) 17242 17243Fixed a reported problem where EOF conditions during a quoted 17244string or comment caused a fault. 17245 17246 17247---------------------------------------- 1724815 August 2002. Summary of changes for this release. 17249 172501) ACPI CA Core Subsystem Version 20020815: 17251 17252Fixed a reported problem where a Store to a method argument that 17253contains a reference did not perform the indirect store correctly. 17254This problem was created during the conversion to the new 17255reference object model - the indirect store to a method argument 17256code was not updated to reflect the new model. 17257 17258Reworked the ACPI mode change code to better conform to ACPI 2.0, 17259handle corner cases, and improve code legibility (Kochi Takayoshi) 17260 17261Fixed a problem with the pathname parsing for the carat (^) 17262prefix. The heavy use of the carat operator by the new namepath 17263optimization in the iASL compiler uncovered a problem with the AML 17264interpreter handling of this prefix. In the case where one or 17265more carats precede a single nameseg, the nameseg was treated as 17266standalone and the search rule (to root) was inadvertently 17267applied. This could cause both the iASL compiler and the 17268interpreter to find the wrong object or to miss the error that 17269should occur if the object does not exist at that exact pathname. 17270 17271Found and fixed the problem where the HP Pavilion DSDT would not 17272load. This was a relatively minor tweak to the table loading code 17273(a problem caused by the unexpected encounter with a method 17274invocation not within a control method), but it does not solve the 17275overall issue of the execution of AML code at the table level. 17276This investigation is still ongoing. 17277 17278Code and Data Size: Current core subsystem library sizes are shown 17279below. These are the code and data sizes for the acpica.lib 17280produced by the Microsoft Visual C++ 6.0 compiler, and these 17281values do not include any ACPI driver or OSPM code. The debug 17282version of the code includes the debug output trace mechanism and 17283has a larger code and data size. Note that these values will vary 17284depending on the efficiency of the compiler and the compiler 17285options used during generation. 17286 17287 Previous Release 17288 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 17289 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 17290 Current Release: 17291 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 17292 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 17293 17294 172952) Linux 17296 17297Remove redundant slab.h include (Brad Hards) 17298 17299Fix several bugs in thermal.c (Herbert Nachtnebel) 17300 17301Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 17302 17303Change acpi_system_suspend to use updated irq functions (Pavel 17304Machek) 17305 17306Export acpi_get_firmware_table (Matthew Wilcox) 17307 17308Use proper root proc entry for ACPI (Kochi Takayoshi) 17309 17310Fix early-boot table parsing (Bjorn Helgaas) 17311 17312 173133) iASL Compiler/Disassembler 17314 17315Reworked the compiler options to make them more consistent and to 17316use two-letter options where appropriate. We were running out of 17317sensible letters. This may break some makefiles, so check the 17318current options list by invoking the compiler with no parameters. 17319 17320Completed the design and implementation of the ASL namepath 17321optimization option for the compiler. This option optimizes all 17322references to named objects to the shortest possible path. The 17323first attempt tries to utilize a single nameseg (4 characters) and 17324the "search-to-root" algorithm used by the interpreter. If that 17325cannot be used (because either the name is not in the search path 17326or there is a conflict with another object with the same name), 17327the pathname is optimized using the carat prefix (usually a 17328shorter string than specifying the entire path from the root.) 17329 17330Implemented support to obtain the DSDT from the Windows registry 17331(when the disassembly option is specified with no input file). 17332Added this code as the implementation for AcpiOsTableOverride in 17333the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 17334utility) to scan memory for the DSDT to the AcpiOsTableOverride 17335function in the DOS OSL to make the disassembler truly OS 17336independent. 17337 17338Implemented a new option to disassemble and compile in one step. 17339When used without an input filename, this option will grab the 17340DSDT from the local machine, disassemble it, and compile it in one 17341step. 17342 17343Added a warning message for invalid escapes (a backslash followed 17344by any character other than the allowable escapes). This catches 17345the quoted string error "\_SB_" (which should be "\\_SB_" ). 17346 17347Also, there are numerous instances in the ACPI specification where 17348this error occurs. 17349 17350Added a compiler option to disable all optimizations. This is 17351basically the "compatibility mode" because by using this option, 17352the AML code will come out exactly the same as other ASL 17353compilers. 17354 17355Added error messages for incorrectly ordered dependent resource 17356functions. This includes: missing EndDependentFn macro at end of 17357dependent resource list, nested dependent function macros (both 17358start and end), and missing StartDependentFn macro. These are 17359common errors that should be caught at compile time. 17360 17361Implemented _OSI support for the disassembler and compiler. _OSI 17362must be included in the namespace for proper disassembly (because 17363the disassembler must know the number of arguments.) 17364 17365Added an "optimization" message type that is optional (off by 17366default). This message is used for all optimizations - including 17367constant folding, integer optimization, and namepath optimization. 17368 17369---------------------------------------- 1737025 July 2002. Summary of changes for this release. 17371 17372 173731) ACPI CA Core Subsystem Version 20020725: 17374 17375The AML Disassembler has been enhanced to produce compilable ASL 17376code and has been integrated into the iASL compiler (see below) as 17377well as the single-step disassembly for the AML debugger and the 17378disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 17379resource templates and macros are fully supported. The 17380disassembler has been tested on over 30 different AML files, 17381producing identical AML when the resulting disassembled ASL file 17382is recompiled with the same ASL compiler. 17383 17384Modified the Resource Manager to allow zero interrupts and zero 17385dma channels during the GetCurrentResources call. This was 17386causing problems on some platforms. 17387 17388Added the AcpiOsRedirectOutput interface to the OSL to simplify 17389output redirection for the AcpiOsPrintf and AcpiOsVprintf 17390interfaces. 17391 17392Code and Data Size: Current core subsystem library sizes are shown 17393below. These are the code and data sizes for the acpica.lib 17394produced by the Microsoft Visual C++ 6.0 compiler, and these 17395values do not include any ACPI driver or OSPM code. The debug 17396version of the code includes the debug output trace mechanism and 17397has a larger code and data size. Note that these values will vary 17398depending on the efficiency of the compiler and the compiler 17399options used during generation. 17400 17401 Previous Release 17402 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 17403 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 17404 Current Release: 17405 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 17406 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 17407 17408 174092) Linux 17410 17411Fixed a panic in the EC driver (Dominik Brodowski) 17412 17413Implemented checksum of the R/XSDT itself during Linux table scan 17414(Richard Schaal) 17415 17416 174173) iASL compiler 17418 17419The AML disassembler is integrated into the compiler. The "-d" 17420option invokes the disassembler to completely disassemble an 17421input AML file, producing as output a text ASL file with the 17422extension ".dsl" (to avoid name collisions with existing .asl 17423source files.) A future enhancement will allow the disassembler 17424to obtain the BIOS DSDT from the registry under Windows. 17425 17426Fixed a problem with the VendorShort and VendorLong resource 17427descriptors where an invalid AML sequence was created. 17428 17429Implemented a fix for BufferData term in the ASL parser. It was 17430inadvertently defined twice, allowing invalid syntax to pass and 17431causing reduction conflicts. 17432 17433Fixed a problem where the Ones opcode could get converted to a 17434value of zero if "Ones" was used where a byte, word or dword value 17435was expected. The 64-bit value is now truncated to the correct 17436size with the correct value. 17437 17438 17439 17440---------------------------------------- 1744102 July 2002. Summary of changes for this release. 17442 17443 174441) ACPI CA Core Subsystem Version 20020702: 17445 17446The Table Manager code has been restructured to add several new 17447features. Tables that are not required by the core subsystem 17448(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 17449validated in any way and are returned from AcpiGetFirmwareTable if 17450requested. The AcpiOsTableOverride interface is now called for 17451each table that is loaded by the subsystem in order to allow the 17452host to override any table it chooses. Previously, only the DSDT 17453could be overridden. Added one new files, tbrsdt.c and 17454tbgetall.c. 17455 17456Fixed a problem with the conversion of internal package objects to 17457external objects (when a package is returned from a control 17458method.) The return buffer length was set to zero instead of the 17459proper length of the package object. 17460 17461Fixed a reported problem with the use of the RefOf and DeRefOf 17462operators when passing reference arguments to control methods. A 17463new type of Reference object is used internally for references 17464produced by the RefOf operator. 17465 17466Added additional error messages in the Resource Manager to explain 17467AE_BAD_DATA errors when they occur during resource parsing. 17468 17469Split the AcpiEnableSubsystem into two primitives to enable a 17470finer granularity initialization sequence. These two calls should 17471be called in this order: AcpiEnableSubsystem (flags), 17472AcpiInitializeObjects (flags). The flags parameter remains the 17473same. 17474 17475 174762) Linux 17477 17478Updated the ACPI utilities module to understand the new style of 17479fully resolved package objects that are now returned from the core 17480subsystem. This eliminates errors of the form: 17481 17482 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 17483 acpi_utils-0430 [145] acpi_evaluate_reference: 17484 Invalid element in package (not a device reference) 17485 17486The method evaluation utility uses the new buffer allocation 17487scheme instead of calling AcpiEvaluate Object twice. 17488 17489Added support for ECDT. This allows the use of the Embedded 17490 17491Controller before the namespace has been fully initialized, which 17492is necessary for ACPI 2.0 support, and for some laptops to 17493initialize properly. (Laptops using ECDT are still rare, so only 17494limited testing was performed of the added functionality.) 17495 17496Fixed memory leaks in the EC driver. 17497 17498Eliminated a brittle code structure in acpi_bus_init(). 17499 17500Eliminated the acpi_evaluate() helper function in utils.c. It is 17501no longer needed since acpi_evaluate_object can optionally 17502allocate memory for the return object. 17503 17504Implemented fix for keyboard hang when getting battery readings on 17505some systems (Stephen White) 17506 17507PCI IRQ routing update (Dominik Brodowski) 17508 17509Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 17510support 17511 17512---------------------------------------- 1751311 June 2002. Summary of changes for this release. 17514 17515 175161) ACPI CA Core Subsystem Version 20020611: 17517 17518Fixed a reported problem where constants such as Zero and One 17519appearing within _PRT packages were not handled correctly within 17520the resource manager code. Originally reported against the ASL 17521compiler because the code generator now optimizes integers to 17522their minimal AML representation (i.e. AML constants if possible.) 17523The _PRT code now handles all AML constant opcodes correctly 17524(Zero, One, Ones, Revision). 17525 17526Fixed a problem with the Concatenate operator in the AML 17527interpreter where a buffer result object was incorrectly marked as 17528not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 17529 17530All package sub-objects are now fully resolved before they are 17531returned from the external ACPI interfaces. This means that name 17532strings are resolved to object handles, and constant operators 17533(Zero, One, Ones, Revision) are resolved to Integers. 17534 17535Implemented immediate resolution of the AML Constant opcodes 17536(Zero, One, Ones, Revision) to Integer objects upon detection 17537within the AML stream. This has simplified and reduced the 17538generated code size of the subsystem by eliminating about 10 17539switch statements for these constants (which previously were 17540contained in Reference objects.) The complicating issues are that 17541the Zero opcode is used as a "placeholder" for unspecified 17542optional target operands and stores to constants are defined to be 17543no-ops. 17544 17545Code and Data Size: Current core subsystem library sizes are shown 17546below. These are the code and data sizes for the acpica.lib 17547produced by the Microsoft Visual C++ 6.0 compiler, and these 17548values do not include any ACPI driver or OSPM code. The debug 17549version of the code includes the debug output trace mechanism and 17550has a larger code and data size. Note that these values will vary 17551depending on the efficiency of the compiler and the compiler 17552options used during generation. 17553 17554 Previous Release 17555 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17556 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17557 Current Release: 17558 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 17559 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 17560 17561 175622) Linux 17563 17564 17565Added preliminary support for obtaining _TRA data for PCI root 17566bridges (Bjorn Helgaas). 17567 17568 175693) iASL Compiler Version X2046: 17570 17571Fixed a problem where the "_DDN" reserved name was defined to be a 17572control method with one argument. There are no arguments, and 17573_DDN does not have to be a control method. 17574 17575Fixed a problem with the Linux version of the compiler where the 17576source lines printed with error messages were the wrong lines. 17577This turned out to be the "LF versus CR/LF" difference between 17578Windows and Unix. This appears to be the longstanding issue 17579concerning listing output and error messages. 17580 17581Fixed a problem with the Linux version of compiler where opcode 17582names within error messages were wrong. This was caused by a 17583slight difference in the output of the Flex tool on Linux versus 17584Windows. 17585 17586Fixed a problem with the Linux compiler where the hex output files 17587contained some garbage data caused by an internal buffer overrun. 17588 17589 17590---------------------------------------- 1759117 May 2002. Summary of changes for this release. 17592 17593 175941) ACPI CA Core Subsystem Version 20020517: 17595 17596Implemented a workaround to an BIOS bug discovered on the HP 17597OmniBook where the FADT revision number and the table size are 17598inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 17599behavior is to fallback to using only the ACPI 1.0 fields of the 17600FADT if the table is too small to be a ACPI 2.0 table as claimed 17601by the revision number. Although this is a BIOS bug, this is a 17602case where the workaround is simple enough and with no side 17603effects, so it seemed prudent to add it. A warning message is 17604issued, however. 17605 17606Implemented minimum size checks for the fixed-length ACPI tables - 17607- the FADT and FACS, as well as consistency checks between the 17608revision number and the table size. 17609 17610Fixed a reported problem in the table override support where the 17611new table pointer was incorrectly treated as a physical address 17612instead of a logical address. 17613 17614Eliminated the use of the AE_AML_ERROR exception and replaced it 17615with more descriptive codes. 17616 17617Fixed a problem where an exception would occur if an ASL Field was 17618defined with no named Field Units underneath it (used by some 17619index fields). 17620 17621Code and Data Size: Current core subsystem library sizes are shown 17622below. These are the code and data sizes for the acpica.lib 17623produced by the Microsoft Visual C++ 6.0 compiler, and these 17624values do not include any ACPI driver or OSPM code. The debug 17625version of the code includes the debug output trace mechanism and 17626has a larger code and data size. Note that these values will vary 17627depending on the efficiency of the compiler and the compiler 17628options used during generation. 17629 17630 Previous Release 17631 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17632 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17633 Current Release: 17634 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17635 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17636 17637 17638 176392) Linux 17640 17641Much work done on ACPI init (MADT and PCI IRQ routing support). 17642(Paul D. and Dominik Brodowski) 17643 17644Fix PCI IRQ-related panic on boot (Sam Revitch) 17645 17646Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 17647 17648Fix "MHz" typo (Dominik Brodowski) 17649 17650Fix RTC year 2000 issue (Dominik Brodowski) 17651 17652Preclude multiple button proc entries (Eric Brunet) 17653 17654Moved arch-specific code out of include/platform/aclinux.h 17655 176563) iASL Compiler Version X2044: 17657 17658Implemented error checking for the string used in the EISAID macro 17659(Usually used in the definition of the _HID object.) The code now 17660strictly enforces the PnP format - exactly 7 characters, 3 17661uppercase letters and 4 hex digits. 17662 17663If a raw string is used in the definition of the _HID object 17664(instead of the EISAID macro), the string must contain all 17665alphanumeric characters (e.g., "*PNP0011" is not allowed because 17666of the asterisk.) 17667 17668Implemented checking for invalid use of ACPI reserved names for 17669most of the name creation operators (Name, Device, Event, Mutex, 17670OperationRegion, PowerResource, Processor, and ThermalZone.) 17671Previously, this check was only performed for control methods. 17672 17673Implemented an additional check on the Name operator to emit an 17674error if a reserved name that must be implemented in ASL as a 17675control method is used. We know that a reserved name must be a 17676method if it is defined with input arguments. 17677 17678The warning emitted when a namespace object reference is not found 17679during the cross reference phase has been changed into an error. 17680The "External" directive should be used for names defined in other 17681modules. 17682 17683 176844) Tools and Utilities 17685 17686The 16-bit tools (adump16 and aexec16) have been regenerated and 17687tested. 17688 17689Fixed a problem with the output of both acpidump and adump16 where 17690the indentation of closing parentheses and brackets was not 17691 17692aligned properly with the parent block. 17693 17694 17695---------------------------------------- 1769603 May 2002. Summary of changes for this release. 17697 17698 176991) ACPI CA Core Subsystem Version 20020503: 17700 17701Added support a new OSL interface that allows the host operating 17702 17703system software to override the DSDT found in the firmware - 17704AcpiOsTableOverride. With this interface, the OSL can examine the 17705version of the firmware DSDT and replace it with a different one 17706if desired. 17707 17708Added new external interfaces for accessing ACPI registers from 17709device drivers and other system software - AcpiGetRegister and 17710AcpiSetRegister. This was simply an externalization of the 17711existing AcpiHwBitRegister interfaces. 17712 17713Fixed a regression introduced in the previous build where the 17714ASL/AML CreateField operator always returned an error, 17715"destination must be a NS Node". 17716 17717Extended the maximum time (before failure) to successfully enable 17718ACPI mode to 3 seconds. 17719 17720Code and Data Size: Current core subsystem library sizes are shown 17721below. These are the code and data sizes for the acpica.lib 17722produced by the Microsoft Visual C++ 6.0 compiler, and these 17723values do not include any ACPI driver or OSPM code. The debug 17724version of the code includes the debug output trace mechanism and 17725has a larger code and data size. Note that these values will vary 17726depending on the efficiency of the compiler and the compiler 17727options used during generation. 17728 17729 Previous Release 17730 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17731 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17732 Current Release: 17733 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17734 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17735 17736 177372) Linux 17738 17739Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 17740free. While 3 out of 4 of our in-house systems work fine, the last 17741one still hangs when testing the LAPIC timer. 17742 17743Renamed many files in 2.5 kernel release to omit "acpi_" from the 17744name. 17745 17746Added warning on boot for Presario 711FR. 17747 17748Sleep improvements (Pavel Machek) 17749 17750ACPI can now be built without CONFIG_PCI enabled. 17751 17752IA64: Fixed memory map functions (JI Lee) 17753 17754 177553) iASL Compiler Version X2043: 17756 17757Added support to allow the compiler to be integrated into the MS 17758VC++ development environment for one-button compilation of single 17759files or entire projects -- with error-to-source-line mapping. 17760 17761Implemented support for compile-time constant folding for the 17762Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 17763specification. This allows the ASL writer to use expressions 17764instead of Integer/Buffer/String constants in terms that must 17765evaluate to constants at compile time and will also simplify the 17766emitted AML in any such sub-expressions that can be folded 17767(evaluated at compile-time.) This increases the size of the 17768compiler significantly because a portion of the ACPI CA AML 17769interpreter is included within the compiler in order to pre- 17770evaluate constant expressions. 17771 17772 17773Fixed a problem with the "Unicode" ASL macro that caused the 17774compiler to fault. (This macro is used in conjunction with the 17775_STR reserved name.) 17776 17777Implemented an AML opcode optimization to use the Zero, One, and 17778Ones opcodes where possible to further reduce the size of integer 17779constants and thus reduce the overall size of the generated AML 17780code. 17781 17782Implemented error checking for new reserved terms for ACPI version 177832.0A. 17784 17785Implemented the -qr option to display the current list of ACPI 17786reserved names known to the compiler. 17787 17788Implemented the -qc option to display the current list of ASL 17789operators that are allowed within constant expressions and can 17790therefore be folded at compile time if the operands are constants. 17791 17792 177934) Documentation 17794 17795Updated the Programmer's Reference for new interfaces, data types, 17796and memory allocation model options. 17797 17798Updated the iASL Compiler User Reference to apply new format and 17799add information about new features and options. 17800 17801---------------------------------------- 1780219 April 2002. Summary of changes for this release. 17803 178041) ACPI CA Core Subsystem Version 20020419: 17805 17806The source code base for the Core Subsystem has been completely 17807cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 17808versions. The Lint option files used are included in the 17809/acpi/generate/lint directory. 17810 17811Implemented enhanced status/error checking across the entire 17812Hardware manager subsystem. Any hardware errors (reported from 17813the OSL) are now bubbled up and will abort a running control 17814method. 17815 17816 17817Fixed a problem where the per-ACPI-table integer width (32 or 64) 17818was stored only with control method nodes, causing a fault when 17819non-control method code was executed during table loading. The 17820solution implemented uses a global variable to indicate table 17821width across the entire ACPI subsystem. Therefore, ACPI CA does 17822not support mixed integer widths across different ACPI tables 17823(DSDT, SSDT). 17824 17825Fixed a problem where NULL extended fields (X fields) in an ACPI 178262.0 ACPI FADT caused the table load to fail. Although the 17827existing ACPI specification is a bit fuzzy on this topic, the new 17828behavior is to fall back on a ACPI 1.0 field if the corresponding 17829ACPI 2.0 X field is zero (even though the table revision indicates 17830a full ACPI 2.0 table.) The ACPI specification will be updated to 17831clarify this issue. 17832 17833Fixed a problem with the SystemMemory operation region handler 17834where memory was always accessed byte-wise even if the AML- 17835specified access width was larger than a byte. This caused 17836problems on systems with memory-mapped I/O. Memory is now 17837accessed with the width specified. On systems that do not support 17838non-aligned transfers, a check is made to guarantee proper address 17839alignment before proceeding in order to avoid an AML-caused 17840alignment fault within the kernel. 17841 17842 17843Fixed a problem with the ExtendedIrq resource where only one byte 17844of the 4-byte Irq field was extracted. 17845 17846Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 17847function was out of date and required a rewrite. 17848 17849Code and Data Size: Current core subsystem library sizes are shown 17850below. These are the code and data sizes for the acpica.lib 17851produced by the Microsoft Visual C++ 6.0 compiler, and these 17852values do not include any ACPI driver or OSPM code. The debug 17853version of the code includes the debug output trace mechanism and 17854has a larger code and data size. Note that these values will vary 17855depending on the efficiency of the compiler and the compiler 17856options used during generation. 17857 17858 Previous Release 17859 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17860 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17861 Current Release: 17862 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17863 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17864 17865 178662) Linux 17867 17868PCI IRQ routing fixes (Dominik Brodowski) 17869 17870 178713) iASL Compiler Version X2042: 17872 17873Implemented an additional compile-time error check for a field 17874unit whose size + minimum access width would cause a run-time 17875access beyond the end-of-region. Previously, only the field size 17876itself was checked. 17877 17878The Core subsystem and iASL compiler now share a common parse 17879object in preparation for compile-time evaluation of the type 178803/4/5 ASL operators. 17881 17882 17883---------------------------------------- 17884Summary of changes for this release: 03_29_02 17885 178861) ACPI CA Core Subsystem Version 20020329: 17887 17888Implemented support for late evaluation of TermArg operands to 17889Buffer and Package objects. This allows complex expressions to be 17890used in the declarations of these object types. 17891 17892Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 178931.0, if the field was larger than 32 bits, it was returned as a 17894buffer - otherwise it was returned as an integer. In ACPI 2.0, 17895the field is returned as a buffer only if the field is larger than 1789664 bits. The TableRevision is now considered when making this 17897conversion to avoid incompatibility with existing ASL code. 17898 17899Implemented logical addressing for AcpiOsGetRootPointer. This 17900allows an RSDP with either a logical or physical address. With 17901this support, the host OS can now override all ACPI tables with 17902one logical RSDP. Includes implementation of "typed" pointer 17903support to allow a common data type for both physical and logical 17904pointers internally. This required a change to the 17905AcpiOsGetRootPointer interface. 17906 17907Implemented the use of ACPI 2.0 Generic Address Structures for all 17908GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 17909mapped I/O for these ACPI features. 17910 17911Initialization now ignores not only non-required tables (All 17912tables other than the FADT, FACS, DSDT, and SSDTs), but also does 17913not validate the table headers of unrecognized tables. 17914 17915Fixed a problem where a notify handler could only be 17916installed/removed on an object of type Device. All "notify" 17917 17918objects are now supported -- Devices, Processor, Power, and 17919Thermal. 17920 17921Removed most verbosity from the ACPI_DB_INFO debug level. Only 17922critical information is returned when this debug level is enabled. 17923 17924Code and Data Size: Current core subsystem library sizes are shown 17925below. These are the code and data sizes for the acpica.lib 17926produced by the Microsoft Visual C++ 6.0 compiler, and these 17927values do not include any ACPI driver or OSPM code. The debug 17928version of the code includes the debug output trace mechanism and 17929has a larger code and data size. Note that these values will vary 17930depending on the efficiency of the compiler and the compiler 17931options used during generation. 17932 17933 Previous Release 17934 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 17935 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 17936 Current Release: 17937 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17938 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17939 17940 179412) Linux: 17942 17943The processor driver (acpi_processor.c) now fully supports ACPI 179442.0-based processor performance control (e.g. Intel(R) 17945SpeedStep(TM) technology) Note that older laptops that only have 17946the Intel "applet" interface are not supported through this. The 17947'limit' and 'performance' interface (/proc) are fully functional. 17948[Note that basic policy for controlling performance state 17949transitions will be included in the next version of ospmd.] The 17950idle handler was modified to more aggressively use C2, and PIIX4 17951errata handling underwent a complete overhaul (big thanks to 17952Dominik Brodowski). 17953 17954Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 17955based devices in the ACPI namespace are now dynamically bound 17956(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 17957This allows, among other things, ACPI to resolve bus numbers for 17958subordinate PCI bridges. 17959 17960Enhanced PCI IRQ routing to get the proper bus number for _PRT 17961entries defined underneath PCI bridges. 17962 17963Added IBM 600E to bad bios list due to invalid _ADR value for 17964PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 17965 17966In the process of adding full MADT support (e.g. IOAPIC) for IA32 17967(acpi.c, mpparse.c) -- stay tuned. 17968 17969Added back visual differentiation between fixed-feature and 17970control-method buttons in dmesg. Buttons are also subtyped (e.g. 17971button/power/PWRF) to simplify button identification. 17972 17973We no longer use -Wno-unused when compiling debug. Please ignore 17974any "_THIS_MODULE defined but not used" messages. 17975 17976Can now shut down the system using "magic sysrq" key. 17977 17978 179793) iASL Compiler version 2041: 17980 17981Fixed a problem where conversion errors for hex/octal/decimal 17982constants were not reported. 17983 17984Implemented a fix for the General Register template Address field. 17985This field was 8 bits when it should be 64. 17986 17987Fixed a problem where errors/warnings were no longer being emitted 17988within the listing output file. 17989 17990Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 17991exactly 4 characters, alphanumeric only. 17992 17993 17994 17995 17996---------------------------------------- 17997Summary of changes for this release: 03_08_02 17998 17999 180001) ACPI CA Core Subsystem Version 20020308: 18001 18002Fixed a problem with AML Fields where the use of the "AccessAny" 18003keyword could cause an interpreter error due to attempting to read 18004or write beyond the end of the parent Operation Region. 18005 18006Fixed a problem in the SystemMemory Operation Region handler where 18007an attempt was made to map memory beyond the end of the region. 18008This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 18009errors on some Linux systems. 18010 18011Fixed a problem where the interpreter/namespace "search to root" 18012algorithm was not functioning for some object types. Relaxed the 18013internal restriction on the search to allow upsearches for all 18014external object types as well as most internal types. 18015 18016 180172) Linux: 18018 18019We now use safe_halt() macro versus individual calls to sti | hlt. 18020 18021Writing to the processor limit interface should now work. "echo 1" 18022will increase the limit, 2 will decrease, and 0 will reset to the 18023 18024default. 18025 18026 180273) ASL compiler: 18028 18029Fixed segfault on Linux version. 18030 18031 18032---------------------------------------- 18033Summary of changes for this release: 02_25_02 18034 180351) ACPI CA Core Subsystem: 18036 18037 18038Fixed a problem where the GPE bit masks were not initialized 18039properly, causing erratic GPE behavior. 18040 18041Implemented limited support for multiple calling conventions. The 18042code can be generated with either the VPL (variable parameter 18043list, or "C") convention, or the FPL (fixed parameter list, or 18044"Pascal") convention. The core subsystem is about 3.4% smaller 18045when generated with FPL. 18046 18047 180482) Linux 18049 18050Re-add some /proc/acpi/event functionality that was lost during 18051the rewrite 18052 18053Resolved issue with /proc events for fixed-feature buttons showing 18054up as the system device. 18055 18056Fixed checks on C2/C3 latencies to be inclusive of maximum values. 18057 18058Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 18059 18060Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 18061 18062Fixed limit interface & usage to fix bugs with passive cooling 18063hysterisis. 18064 18065Restructured PRT support. 18066 18067 18068---------------------------------------- 18069Summary of changes for this label: 02_14_02 18070 18071 180721) ACPI CA Core Subsystem: 18073 18074Implemented support in AcpiLoadTable to allow loading of FACS and 18075FADT tables. 18076 18077Support for the now-obsolete interim 0.71 64-bit ACPI tables has 18078been removed. All 64-bit platforms should be migrated to the ACPI 180792.0 tables. The actbl71.h header has been removed from the source 18080tree. 18081 18082All C macros defined within the subsystem have been prefixed with 18083"ACPI_" to avoid collision with other system include files. 18084 18085Removed the return value for the two AcpiOsPrint interfaces, since 18086it is never used and causes lint warnings for ignoring the return 18087value. 18088 18089Added error checking to all internal mutex acquire and release 18090calls. Although a failure from one of these interfaces is 18091probably a fatal system error, these checks will cause the 18092immediate abort of the currently executing method or interface. 18093 18094Fixed a problem where the AcpiSetCurrentResources interface could 18095fault. This was a side effect of the deployment of the new memory 18096allocation model. 18097 18098Fixed a couple of problems with the Global Lock support introduced 18099in the last major build. The "common" (1.0/2.0) internal FACS was 18100being overwritten with the FACS signature and clobbering the 18101Global Lock pointer. Also, the actual firmware FACS was being 18102unmapped after construction of the "common" FACS, preventing 18103access to the actual Global Lock field within it. The "common" 18104internal FACS is no longer installed as an actual ACPI table; it 18105is used simply as a global. 18106 18107Code and Data Size: Current core subsystem library sizes are shown 18108below. These are the code and data sizes for the acpica.lib 18109produced by the Microsoft Visual C++ 6.0 compiler, and these 18110values do not include any ACPI driver or OSPM code. The debug 18111version of the code includes the debug output trace mechanism and 18112has a larger code and data size. Note that these values will vary 18113depending on the efficiency of the compiler and the compiler 18114options used during generation. 18115 18116 Previous Release (02_07_01) 18117 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 18118 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 18119 Current Release: 18120 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 18121 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 18122 18123 181242) Linux 18125 18126Updated Linux-specific code for core macro and OSL interface 18127changes described above. 18128 18129Improved /proc/acpi/event. It now can be opened only once and has 18130proper poll functionality. 18131 18132Fixed and restructured power management (acpi_bus). 18133 18134Only create /proc "view by type" when devices of that class exist. 18135 18136Fixed "charging/discharging" bug (and others) in acpi_battery. 18137 18138Improved thermal zone code. 18139 18140 181413) ASL Compiler, version X2039: 18142 18143 18144Implemented the new compiler restriction on ASL String hex/octal 18145escapes to non-null, ASCII values. An error results if an invalid 18146value is used. (This will require an ACPI 2.0 specification 18147change.) 18148 18149AML object labels that are output to the optional C and ASM source 18150are now prefixed with both the ACPI table signature and table ID 18151to help guarantee uniqueness within a large BIOS project. 18152 18153 18154---------------------------------------- 18155Summary of changes for this label: 02_01_02 18156 181571) ACPI CA Core Subsystem: 18158 18159ACPI 2.0 support is complete in the entire Core Subsystem and the 18160ASL compiler. All new ACPI 2.0 operators are implemented and all 18161other changes for ACPI 2.0 support are complete. With 18162simultaneous code and data optimizations throughout the subsystem, 18163ACPI 2.0 support has been implemented with almost no additional 18164cost in terms of code and data size. 18165 18166Implemented a new mechanism for allocation of return buffers. If 18167the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 18168be allocated on behalf of the caller. Consolidated all return 18169buffer validation and allocation to a common procedure. Return 18170buffers will be allocated via the primary OSL allocation interface 18171since it appears that a separate pool is not needed by most users. 18172If a separate pool is required for these buffers, the caller can 18173still use the original mechanism and pre-allocate the buffer(s). 18174 18175Implemented support for string operands within the DerefOf 18176operator. 18177 18178Restructured the Hardware and Event managers to be table driven, 18179simplifying the source code and reducing the amount of generated 18180code. 18181 18182Split the common read/write low-level ACPI register bitfield 18183procedure into a separate read and write, simplifying the code 18184considerably. 18185 18186Obsoleted the AcpiOsCallocate OSL interface. This interface was 18187used only a handful of times and didn't have enough critical mass 18188for a separate interface. Replaced with a common calloc procedure 18189in the core. 18190 18191Fixed a reported problem with the GPE number mapping mechanism 18192that allows GPE1 numbers to be non-contiguous with GPE0. 18193Reorganized the GPE information and shrunk a large array that was 18194originally large enough to hold info for all possible GPEs (256) 18195to simply large enough to hold all GPEs up to the largest GPE 18196number on the machine. 18197 18198Fixed a reported problem with resource structure alignment on 64- 18199bit platforms. 18200 18201Changed the AcpiEnableEvent and AcpiDisableEvent external 18202interfaces to not require any flags for the common case of 18203enabling/disabling a GPE. 18204 18205Implemented support to allow a "Notify" on a Processor object. 18206 18207Most TBDs in comments within the source code have been resolved 18208and eliminated. 18209 18210 18211Fixed a problem in the interpreter where a standalone parent 18212prefix (^) was not handled correctly in the interpreter and 18213debugger. 18214 18215Removed obsolete and unnecessary GPE save/restore code. 18216 18217Implemented Field support in the ASL Load operator. This allows a 18218table to be loaded from a named field, in addition to loading a 18219table directly from an Operation Region. 18220 18221Implemented timeout and handle support in the external Global Lock 18222interfaces. 18223 18224Fixed a problem in the AcpiDump utility where pathnames were no 18225longer being generated correctly during the dump of named objects. 18226 18227Modified the AML debugger to give a full display of if/while 18228predicates instead of just one AML opcode at a time. (The 18229predicate can have several nested ASL statements.) The old method 18230was confusing during single stepping. 18231 18232Code and Data Size: Current core subsystem library sizes are shown 18233below. These are the code and data sizes for the acpica.lib 18234produced by the Microsoft Visual C++ 6.0 compiler, and these 18235values do not include any ACPI driver or OSPM code. The debug 18236version of the code includes the debug output trace mechanism and 18237has a larger code and data size. Note that these values will vary 18238depending on the efficiency of the compiler and the compiler 18239options used during generation. 18240 18241 Previous Release (12_18_01) 18242 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 18243 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 18244 Current Release: 18245 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 18246 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 18247 182482) Linux 18249 18250 Implemented fix for PIIX reverse throttling errata (Processor 18251driver) 18252 18253Added new Limit interface (Processor and Thermal drivers) 18254 18255New thermal policy (Thermal driver) 18256 18257Many updates to /proc 18258 18259Battery "low" event support (Battery driver) 18260 18261Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 18262 18263IA32 - IA64 initialization unification, no longer experimental 18264 18265Menuconfig options redesigned 18266 182673) ASL Compiler, version X2037: 18268 18269Implemented several new output features to simplify integration of 18270AML code into firmware: 1) Output the AML in C source code with 18271labels for each named ASL object. The original ASL source code 18272is interleaved as C comments. 2) Output the AML in ASM source code 18273with labels and interleaved ASL source. 3) Output the AML in 18274raw hex table form, in either C or ASM. 18275 18276Implemented support for optional string parameters to the 18277LoadTable operator. 18278 18279Completed support for embedded escape sequences within string 18280literals. The compiler now supports all single character escapes 18281as well as the Octal and Hex escapes. Note: the insertion of a 18282null byte into a string literal (via the hex/octal escape) causes 18283the string to be immediately terminated. A warning is issued. 18284 18285Fixed a problem where incorrect AML was generated for the case 18286where an ASL namepath consists of a single parent prefix ( 18287 18288) with no trailing name segments. 18289 18290The compiler has been successfully generated with a 64-bit C 18291compiler. 18292 18293 18294 18295 18296---------------------------------------- 18297Summary of changes for this label: 12_18_01 18298 182991) Linux 18300 18301Enhanced blacklist with reason and severity fields. Any table's 18302signature may now be used to identify a blacklisted system. 18303 18304Call _PIC control method to inform the firmware which interrupt 18305model the OS is using. Turn on any disabled link devices. 18306 18307Cleaned up busmgr /proc error handling (Andreas Dilger) 18308 18309 2) ACPI CA Core Subsystem: 18310 18311Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 18312while loop) 18313 18314Completed implementation of the ACPI 2.0 "Continue", 18315"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 18316operators. All new ACPI 2.0 operators are now implemented in both 18317the ASL compiler and the AML interpreter. The only remaining ACPI 183182.0 task is support for the String data type in the DerefOf 18319operator. Fixed a problem with AcquireMutex where the status code 18320was lost if the caller had to actually wait for the mutex. 18321 18322Increased the maximum ASL Field size from 64K bits to 4G bits. 18323 18324Completed implementation of the external Global Lock interfaces -- 18325AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 18326Handler parameters were added. 18327 18328Completed another pass at removing warnings and issues when 18329compiling with 64-bit compilers. The code now compiles cleanly 18330with the Intel 64-bit C/C++ compiler. Most notably, the pointer 18331add and subtract (diff) macros have changed considerably. 18332 18333 18334Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1833564-bit platforms, 32-bits on all others. This type is used 18336wherever memory allocation and/or the C sizeof() operator is used, 18337and affects the OSL memory allocation interfaces AcpiOsAllocate 18338and AcpiOsCallocate. 18339 18340Implemented sticky user breakpoints in the AML debugger. 18341 18342Code and Data Size: Current core subsystem library sizes are shown 18343below. These are the code and data sizes for the acpica.lib 18344produced by the Microsoft Visual C++ 6.0 compiler, and these 18345values do not include any ACPI driver or OSPM code. The debug 18346version of the code includes the debug output trace mechanism and 18347has a larger code and data size. Note that these values will vary 18348depending on the efficiency of the compiler and the compiler 18349options used during generation. 18350 18351 Previous Release (12_05_01) 18352 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 18353 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 18354 Current Release: 18355 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 18356 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 18357 18358 3) ASL Compiler, version X2034: 18359 18360Now checks for (and generates an error if detected) the use of a 18361Break or Continue statement without an enclosing While statement. 18362 18363 18364Successfully generated the compiler with the Intel 64-bit C 18365compiler. 18366 18367 ---------------------------------------- 18368Summary of changes for this label: 12_05_01 18369 18370 1) ACPI CA Core Subsystem: 18371 18372The ACPI 2.0 CopyObject operator is fully implemented. This 18373operator creates a new copy of an object (and is also used to 18374bypass the "implicit conversion" mechanism of the Store operator.) 18375 18376The ACPI 2.0 semantics for the SizeOf operator are fully 18377implemented. The change is that performing a SizeOf on a 18378reference object causes an automatic dereference of the object to 18379the actual value before the size is evaluated. This behavior was 18380undefined in ACPI 1.0. 18381 18382The ACPI 2.0 semantics for the Extended IRQ resource descriptor 18383have been implemented. The interrupt polarity and mode are now 18384independently set. 18385 18386Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 18387appearing in Package objects were not properly converted to 18388integers when the internal Package was converted to an external 18389object (via the AcpiEvaluateObject interface.) 18390 18391Fixed a problem with the namespace object deletion mechanism for 18392objects created by control methods. There were two parts to this 18393problem: 1) Objects created during the initialization phase method 18394parse were not being deleted, and 2) The object owner ID mechanism 18395to track objects was broken. 18396 18397Fixed a problem where the use of the ASL Scope operator within a 18398control method would result in an invalid opcode exception. 18399 18400Fixed a problem introduced in the previous label where the buffer 18401length required for the _PRT structure was not being returned 18402correctly. 18403 18404Code and Data Size: Current core subsystem library sizes are shown 18405below. These are the code and data sizes for the acpica.lib 18406produced by the Microsoft Visual C++ 6.0 compiler, and these 18407values do not include any ACPI driver or OSPM code. The debug 18408version of the code includes the debug output trace mechanism and 18409has a larger code and data size. Note that these values will vary 18410depending on the efficiency of the compiler and the compiler 18411options used during generation. 18412 18413 Previous Release (11_20_01) 18414 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 18415 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 18416 18417 Current Release: 18418 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 18419 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 18420 18421 2) Linux: 18422 18423Updated all files to apply cleanly against 2.4.16. 18424 18425Added basic PCI Interrupt Routing Table (PRT) support for IA32 18426(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 18427version supports both static and dynamic PRT entries, but dynamic 18428entries are treated as if they were static (not yet 18429reconfigurable). Architecture- specific code to use this data is 18430absent on IA32 but should be available shortly. 18431 18432Changed the initialization sequence to start the ACPI interpreter 18433(acpi_init) prior to initialization of the PCI driver (pci_init) 18434in init/main.c. This ordering is required to support PRT and 18435facilitate other (future) enhancement. A side effect is that the 18436ACPI bus driver and certain device drivers can no longer be loaded 18437as modules. 18438 18439Modified the 'make menuconfig' options to allow PCI Interrupt 18440Routing support to be included without the ACPI Bus and other 18441device drivers. 18442 18443 3) ASL Compiler, version X2033: 18444 18445Fixed some issues with the use of the new CopyObject and 18446DataTableRegion operators. Both are fully functional. 18447 18448 ---------------------------------------- 18449Summary of changes for this label: 11_20_01 18450 18451 20 November 2001. Summary of changes for this release. 18452 18453 1) ACPI CA Core Subsystem: 18454 18455Updated Index support to match ACPI 2.0 semantics. Storing a 18456Integer, String, or Buffer to an Index of a Buffer will store only 18457the least-significant byte of the source to the Indexed buffer 18458byte. Multiple writes are not performed. 18459 18460Fixed a problem where the access type used in an AccessAs ASL 18461operator was not recorded correctly into the field object. 18462 18463Fixed a problem where ASL Event objects were created in a 18464signalled state. Events are now created in an unsignalled state. 18465 18466The internal object cache is now purged after table loading and 18467initialization to reduce the use of dynamic kernel memory -- on 18468the assumption that object use is greatest during the parse phase 18469of the entire table (versus the run-time use of individual control 18470methods.) 18471 18472ACPI 2.0 variable-length packages are now fully operational. 18473 18474Code and Data Size: Code and Data optimizations have permitted new 18475feature development with an actual reduction in the library size. 18476Current core subsystem library sizes are shown below. These are 18477the code and data sizes for the acpica.lib produced by the 18478Microsoft Visual C++ 6.0 compiler, and these values do not include 18479any ACPI driver or OSPM code. The debug version of the code 18480includes the debug output trace mechanism and has a larger code 18481and data size. Note that these values will vary depending on the 18482efficiency of the compiler and the compiler options used during 18483generation. 18484 18485 Previous Release (11_09_01): 18486 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18487 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18488 18489 Current Release: 18490 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 18491 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 18492 18493 2) Linux: 18494 18495Enhanced the ACPI boot-time initialization code to allow the use 18496of Local APIC tables for processor enumeration on IA-32, and to 18497pave the way for a fully MPS-free boot (on SMP systems) in the 18498near future. This functionality replaces 18499arch/i386/kernel/acpitables.c, which was introduced in an earlier 185002.4.15-preX release. To enable this feature you must add 18501"acpi_boot=on" to the kernel command line -- see the help entry 18502for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 18503the works... 18504 18505Restructured the configuration options to allow boot-time table 18506parsing support without inclusion of the ACPI Interpreter (and 18507other) code. 18508 18509NOTE: This release does not include fixes for the reported events, 18510power-down, and thermal passive cooling issues (coming soon). 18511 18512 3) ASL Compiler: 18513 18514Added additional typechecking for Fields within restricted access 18515Operation Regions. All fields within EC and CMOS regions must be 18516declared with ByteAcc. All fields within SMBus regions must be 18517declared with the BufferAcc access type. 18518 18519Fixed a problem where the listing file output of control methods 18520no longer interleaved the actual AML code with the ASL source 18521code. 18522 18523 18524 18525 18526---------------------------------------- 18527Summary of changes for this label: 11_09_01 18528 185291) ACPI CA Core Subsystem: 18530 18531Implemented ACPI 2.0-defined support for writes to fields with a 18532Buffer, String, or Integer source operand that is smaller than the 18533target field. In these cases, the source operand is zero-extended 18534to fill the target field. 18535 18536Fixed a problem where a Field starting bit offset (within the 18537parent operation region) was calculated incorrectly if the 18538 18539alignment of the field differed from the access width. This 18540affected CreateWordField, CreateDwordField, CreateQwordField, and 18541possibly other fields that use the "AccessAny" keyword. 18542 18543Fixed a problem introduced in the 11_02_01 release where indirect 18544stores through method arguments did not operate correctly. 18545 185462) Linux: 18547 18548Implemented boot-time ACPI table parsing support 18549(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 18550facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 18551legacy BIOS interfaces (e.g. MPS) for the configuration of system 18552processors, memory, and interrupts during setup_arch(). Note that 18553this patch does not include the required architecture-specific 18554changes required to apply this information -- subsequent patches 18555will be posted for both IA32 and IA64 to achieve this. 18556 18557Added low-level sleep support for IA32 platforms, courtesy of Pat 18558Mochel. This allows IA32 systems to transition to/from various 18559sleeping states (e.g. S1, S3), although the lack of a centralized 18560driver model and power-manageable drivers will prevent its 18561(successful) use on most systems. 18562 18563Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 18564submenu, unified IA32 and IA64 options, added new "Boot using ACPI 18565tables" option, etc. 18566 18567Increased the default timeout for the EC driver from 1ms to 10ms 18568(1000 cycles of 10us) to try to address AE_TIME errors during EC 18569transactions. 18570 18571 ---------------------------------------- 18572Summary of changes for this label: 11_02_01 18573 185741) ACPI CA Core Subsystem: 18575 18576ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 18577(QWordAcc keyword). All ACPI 2.0 64-bit support is now 18578implemented. 18579 18580OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 18581changes to support ACPI 2.0 Qword field access. Read/Write 18582PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 18583accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 18584the value parameter for the address space handler interface is now 18585an ACPI_INTEGER. OSL implementations of these interfaces must now 18586handle the case where the Width parameter is 64. 18587 18588Index Fields: Fixed a problem where unaligned bit assembly and 18589disassembly for IndexFields was not supported correctly. 18590 18591Index and Bank Fields: Nested Index and Bank Fields are now 18592supported. During field access, a check is performed to ensure 18593that the value written to an Index or Bank register is not out of 18594the range of the register. The Index (or Bank) register is 18595written before each access to the field data. Future support will 18596include allowing individual IndexFields to be wider than the 18597DataRegister width. 18598 18599Fields: Fixed a problem where the AML interpreter was incorrectly 18600attempting to write beyond the end of a Field/OpRegion. This was 18601a boundary case that occurred when a DWORD field was written to a 18602BYTE access OpRegion, forcing multiple writes and causing the 18603interpreter to write one datum too many. 18604 18605Fields: Fixed a problem with Field/OpRegion access where the 18606starting bit address of a field was incorrectly calculated if the 18607current access type was wider than a byte (WordAcc, DwordAcc, or 18608QwordAcc). 18609 18610Fields: Fixed a problem where forward references to individual 18611FieldUnits (individual Field names within a Field definition) were 18612not resolved during the AML table load. 18613 18614Fields: Fixed a problem where forward references from a Field 18615definition to the parent Operation Region definition were not 18616resolved during the AML table load. 18617 18618Fields: Duplicate FieldUnit names within a scope are now detected 18619during AML table load. 18620 18621Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 18622returned an incorrect name for the root node. 18623 18624Code and Data Size: Code and Data optimizations have permitted new 18625feature development with an actual reduction in the library size. 18626Current core subsystem library sizes are shown below. These are 18627the code and data sizes for the acpica.lib produced by the 18628Microsoft Visual C++ 6.0 compiler, and these values do not include 18629any ACPI driver or OSPM code. The debug version of the code 18630includes the debug output trace mechanism and has a larger code 18631and data size. Note that these values will vary depending on the 18632efficiency of the compiler and the compiler options used during 18633generation. 18634 18635 Previous Release (10_18_01): 18636 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18637 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18638 18639 Current Release: 18640 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18641 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18642 18643 2) Linux: 18644 18645Improved /proc processor output (Pavel Machek) Re-added 18646MODULE_LICENSE("GPL") to all modules. 18647 18648 3) ASL Compiler version X2030: 18649 18650Duplicate FieldUnit names within a scope are now detected and 18651flagged as errors. 18652 18653 4) Documentation: 18654 18655Programmer Reference updated to reflect OSL and address space 18656handler interface changes described above. 18657 18658---------------------------------------- 18659Summary of changes for this label: 10_18_01 18660 18661ACPI CA Core Subsystem: 18662 18663Fixed a problem with the internal object reference count mechanism 18664that occasionally caused premature object deletion. This resolves 18665all of the outstanding problem reports where an object is deleted 18666in the middle of an interpreter evaluation. Although this problem 18667only showed up in rather obscure cases, the solution to the 18668problem involved an adjustment of all reference counts involving 18669objects attached to namespace nodes. 18670 18671Fixed a problem with Field support in the interpreter where 18672writing to an aligned field whose length is an exact multiple (2 18673or greater) of the field access granularity would cause an attempt 18674to write beyond the end of the field. 18675 18676The top level AML opcode execution functions within the 18677interpreter have been renamed with a more meaningful and 18678consistent naming convention. The modules exmonad.c and 18679exdyadic.c were eliminated. New modules are exoparg1.c, 18680exoparg2.c, exoparg3.c, and exoparg6.c. 18681 18682Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 18683 18684Fixed a problem where the AML debugger was causing some internal 18685objects to not be deleted during subsystem termination. 18686 18687Fixed a problem with the external AcpiEvaluateObject interface 18688where the subsystem would fault if the named object to be 18689evaluated referred to a constant such as Zero, Ones, etc. 18690 18691Fixed a problem with IndexFields and BankFields where the 18692subsystem would fault if the index, data, or bank registers were 18693not defined in the same scope as the field itself. 18694 18695Added printf format string checking for compilers that support 18696this feature. Corrected more than 50 instances of issues with 18697format specifiers within invocations of ACPI_DEBUG_PRINT 18698throughout the core subsystem code. 18699 18700The ASL "Revision" operator now returns the ACPI support level 18701implemented in the core - the value "2" since the ACPI 2.0 support 18702is more than 50% implemented. 18703 18704Enhanced the output of the AML debugger "dump namespace" command 18705to output in a more human-readable form. 18706 18707Current core subsystem library code sizes are shown below. These 18708 18709are the code and data sizes for the acpica.lib produced by the 18710Microsoft Visual C++ 6.0 compiler, and these values do not include 18711any ACPI driver or OSPM code. The debug version of the code 18712includes the full debug trace mechanism -- leading to a much 18713 18714larger code and data size. Note that these values will vary 18715depending on the efficiency of the compiler and the compiler 18716options used during generation. 18717 18718 Previous Label (09_20_01): 18719 Non-Debug Version: 65K Code, 5K Data, 70K Total 18720 Debug Version: 138K Code, 58K Data, 196K Total 18721 18722 This Label: 18723 18724 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18725 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18726 18727Linux: 18728 18729Implemented a "Bad BIOS Blacklist" to track machines that have 18730known ASL/AML problems. 18731 18732Enhanced the /proc interface for the thermal zone driver and added 18733support for _HOT (the critical suspend trip point). The 'info' 18734file now includes threshold/policy information, and allows setting 18735of _SCP (cooling preference) and _TZP (polling frequency) values 18736to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 18737frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 18738preference to the passive/quiet mode (if supported by the ASL). 18739 18740Implemented a workaround for a gcc bug that resuted in an OOPs 18741when loading the control method battery driver. 18742 18743 ---------------------------------------- 18744Summary of changes for this label: 09_20_01 18745 18746 ACPI CA Core Subsystem: 18747 18748The AcpiEnableEvent and AcpiDisableEvent interfaces have been 18749modified to allow individual GPE levels to be flagged as wake- 18750enabled (i.e., these GPEs are to remain enabled when the platform 18751sleeps.) 18752 18753The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 18754support wake-enabled GPEs. This means that upon entering the 18755sleep state, all GPEs that are not wake-enabled are disabled. 18756When leaving the sleep state, these GPEs are re-enabled. 18757 18758A local double-precision divide/modulo module has been added to 18759enhance portability to OS kernels where a 64-bit math library is 18760not available. The new module is "utmath.c". 18761 18762Several optimizations have been made to reduce the use of CPU 18763stack. Originally over 2K, the maximum stack usage is now below 187642K at 1860 bytes (1.82k) 18765 18766Fixed a problem with the AcpiGetFirmwareTable interface where the 18767root table pointer was not mapped into a logical address properly. 18768 18769Fixed a problem where a NULL pointer was being dereferenced in the 18770interpreter code for the ASL Notify operator. 18771 18772Fixed a problem where the use of the ASL Revision operator 18773returned an error. This operator now returns the current version 18774of the ACPI CA core subsystem. 18775 18776Fixed a problem where objects passed as control method parameters 18777to AcpiEvaluateObject were always deleted at method termination. 18778However, these objects may end up being stored into the namespace 18779by the called method. The object reference count mechanism was 18780applied to these objects instead of a force delete. 18781 18782Fixed a problem where static strings or buffers (contained in the 18783AML code) that are declared as package elements within the ASL 18784code could cause a fault because the interpreter would attempt to 18785delete them. These objects are now marked with the "static 18786object" flag to prevent any attempt to delete them. 18787 18788Implemented an interpreter optimization to use operands directly 18789from the state object instead of extracting the operands to local 18790variables. This reduces stack use and code size, and improves 18791performance. 18792 18793The module exxface.c was eliminated as it was an unnecessary extra 18794layer of code. 18795 18796Current core subsystem library code sizes are shown below. These 18797are the code and data sizes for the acpica.lib produced by the 18798Microsoft Visual C++ 6.0 compiler, and these values do not include 18799any ACPI driver or OSPM code. The debug version of the code 18800includes the full debug trace mechanism -- leading to a much 18801larger code and data size. Note that these values will vary 18802depending on the efficiency of the compiler and the compiler 18803options used during generation. 18804 18805 Non-Debug Version: 65K Code, 5K Data, 70K Total 18806(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 18807Total (Previously 195K) 18808 18809Linux: 18810 18811Support for ACPI 2.0 64-bit integers has been added. All ACPI 18812Integer objects are now 64 bits wide 18813 18814All Acpi data types and structures are now in lower case. Only 18815Acpi macros are upper case for differentiation. 18816 18817 Documentation: 18818 18819Changes to the external interfaces as described above. 18820 18821 ---------------------------------------- 18822Summary of changes for this label: 08_31_01 18823 18824 ACPI CA Core Subsystem: 18825 18826A bug with interpreter implementation of the ASL Divide operator 18827was found and fixed. The implicit function return value (not the 18828explicit store operands) was returning the remainder instead of 18829the quotient. This was a longstanding bug and it fixes several 18830known outstanding issues on various platforms. 18831 18832The ACPI_DEBUG_PRINT and function trace entry/exit macros have 18833been further optimized for size. There are 700 invocations of the 18834DEBUG_PRINT macro alone, so each optimization reduces the size of 18835the debug version of the subsystem significantly. 18836 18837A stack trace mechanism has been implemented. The maximum stack 18838usage is about 2K on 32-bit platforms. The debugger command "stat 18839stack" will display the current maximum stack usage. 18840 18841All public symbols and global variables within the subsystem are 18842now prefixed with the string "Acpi". This keeps all of the 18843symbols grouped together in a kernel map, and avoids conflicts 18844with other kernel subsystems. 18845 18846Most of the internal fixed lookup tables have been moved into the 18847code segment via the const operator. 18848 18849Several enhancements have been made to the interpreter to both 18850reduce the code size and improve performance. 18851 18852Current core subsystem library code sizes are shown below. These 18853are the code and data sizes for the acpica.lib produced by the 18854Microsoft Visual C++ 6.0 compiler, and these values do not include 18855any ACPI driver or OSPM code. The debug version of the code 18856includes the full debug trace mechanism which contains over 700 18857invocations of the DEBUG_PRINT macro, 500 function entry macro 18858invocations, and over 900 function exit macro invocations -- 18859leading to a much larger code and data size. Note that these 18860values will vary depending on the efficiency of the compiler and 18861the compiler options used during generation. 18862 18863 Non-Debug Version: 64K Code, 5K Data, 69K Total 18864Debug Version: 137K Code, 58K Data, 195K Total 18865 18866 Linux: 18867 18868Implemented wbinvd() macro, pending a kernel-wide definition. 18869 18870Fixed /proc/acpi/event to handle poll() and short reads. 18871 18872 ASL Compiler, version X2026: 18873 18874Fixed a problem introduced in the previous label where the AML 18875 18876code emitted for package objects produced packages with zero 18877length. 18878 18879 ---------------------------------------- 18880Summary of changes for this label: 08_16_01 18881 18882ACPI CA Core Subsystem: 18883 18884The following ACPI 2.0 ASL operators have been implemented in the 18885AML interpreter (These are already supported by the Intel ASL 18886compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 18887ToBuffer. Support for 64-bit AML constants is implemented in the 18888AML parser, debugger, and disassembler. 18889 18890The internal memory tracking mechanism (leak detection code) has 18891been upgraded to reduce the memory overhead (a separate tracking 18892block is no longer allocated for each memory allocation), and now 18893supports all of the internal object caches. 18894 18895The data structures and code for the internal object caches have 18896been coelesced and optimized so that there is a single cache and 18897memory list data structure and a single group of functions that 18898implement generic cache management. This has reduced the code 18899size in both the debug and release versions of the subsystem. 18900 18901The DEBUG_PRINT macro(s) have been optimized for size and replaced 18902by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 18903different, because it generates a single call to an internal 18904function. This results in a savings of about 90 bytes per 18905invocation, resulting in an overall code and data savings of about 1890616% in the debug version of the subsystem. 18907 18908 Linux: 18909 18910Fixed C3 disk corruption problems and re-enabled C3 on supporting 18911machines. 18912 18913Integrated low-level sleep code by Patrick Mochel. 18914 18915Further tweaked source code Linuxization. 18916 18917Other minor fixes. 18918 18919 ASL Compiler: 18920 18921Support for ACPI 2.0 variable length packages is fixed/completed. 18922 18923Fixed a problem where the optional length parameter for the ACPI 189242.0 ToString operator. 18925 18926Fixed multiple extraneous error messages when a syntax error is 18927detected within the declaration line of a control method. 18928 18929 ---------------------------------------- 18930Summary of changes for this label: 07_17_01 18931 18932ACPI CA Core Subsystem: 18933 18934Added a new interface named AcpiGetFirmwareTable to obtain any 18935ACPI table via the ACPI signature. The interface can be called at 18936any time during kernel initialization, even before the kernel 18937virtual memory manager is initialized and paging is enabled. This 18938allows kernel subsystems to obtain ACPI tables very early, even 18939before the ACPI CA subsystem is initialized. 18940 18941Fixed a problem where Fields defined with the AnyAcc attribute 18942could be resolved to the incorrect address under the following 18943conditions: 1) the field width is larger than 8 bits and 2) the 18944parent operation region is not defined on a DWORD boundary. 18945 18946Fixed a problem where the interpreter is not being locked during 18947namespace initialization (during execution of the _INI control 18948methods), causing an error when an attempt is made to release it 18949later. 18950 18951ACPI 2.0 support in the AML Interpreter has begun and will be 18952ongoing throughout the rest of this year. In this label, The Mod 18953operator is implemented. 18954 18955Added a new data type to contain full PCI addresses named 18956ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 18957and Function values. 18958 18959 Linux: 18960 18961Enhanced the Linux version of the source code to change most 18962capitalized ACPI type names to lowercase. For example, all 18963instances of ACPI_STATUS are changed to acpi_status. This will 18964result in a large diff, but the change is strictly cosmetic and 18965aligns the CA code closer to the Linux coding standard. 18966 18967OSL Interfaces: 18968 18969The interfaces to the PCI configuration space have been changed to 18970add the PCI Segment number and to split the single 32-bit combined 18971DeviceFunction field into two 16-bit fields. This was 18972accomplished by moving the four values that define an address in 18973PCI configuration space (segment, bus, device, and function) to 18974the new ACPI_PCI_ID structure. 18975 18976The changes to the PCI configuration space interfaces led to a 18977reexamination of the complete set of address space access 18978interfaces for PCI, I/O, and Memory. The previously existing 18 18979interfaces have proven difficult to maintain (any small change 18980must be propagated across at least 6 interfaces) and do not easily 18981allow for future expansion to 64 bits if necessary. Also, on some 18982systems, it would not be appropriate to demultiplex the access 18983width (8, 16, 32,or 64) before calling the OSL if the 18984corresponding native OS interfaces contain a similar access width 18985parameter. For these reasons, the 18 address space interfaces 18986have been replaced by these 6 new ones: 18987 18988AcpiOsReadPciConfiguration 18989AcpiOsWritePciConfiguration 18990AcpiOsReadMemory 18991AcpiOsWriteMemory 18992AcpiOsReadPort 18993AcpiOsWritePort 18994 18995Added a new interface named AcpiOsGetRootPointer to allow the OSL 18996to perform the platform and/or OS-specific actions necessary to 18997obtain the ACPI RSDP table pointer. On IA-32 platforms, this 18998interface will simply call down to the CA core to perform the low- 18999memory search for the table. On IA-64, the RSDP is obtained from 19000EFI. Migrating this interface to the OSL allows the CA core to 19001 19002remain OS and platform independent. 19003 19004Added a new interface named AcpiOsSignal to provide a generic 19005"function code and pointer" interface for various miscellaneous 19006signals and notifications that must be made to the host OS. The 19007first such signals are intended to support the ASL Fatal and 19008Breakpoint operators. In the latter case, the AcpiOsBreakpoint 19009interface has been obsoleted. 19010 19011The definition of the AcpiFormatException interface has been 19012changed to simplify its use. The caller no longer must supply a 19013buffer to the call; A pointer to a const string is now returned 19014directly. This allows the call to be easily used in printf 19015statements, etc. since the caller does not have to manage a local 19016buffer. 19017 19018 19019 ASL Compiler, Version X2025: 19020 19021The ACPI 2.0 Switch/Case/Default operators have been implemented 19022and are fully functional. They will work with all ACPI 1.0 19023interpreters, since the operators are simply translated to If/Else 19024pairs. 19025 19026The ACPI 2.0 ElseIf operator is implemented and will also work 19027with 1.0 interpreters, for the same reason. 19028 19029Implemented support for ACPI 2.0 variable-length packages. These 19030packages have a separate opcode, and their size is determined by 19031the interpreter at run-time. 19032 19033Documentation The ACPI CA Programmer Reference has been updated to 19034reflect the new interfaces and changes to existing interfaces. 19035 19036 ------------------------------------------ 19037Summary of changes for this label: 06_15_01 19038 19039 ACPI CA Core Subsystem: 19040 19041Fixed a problem where a DWORD-accessed field within a Buffer 19042object would get its byte address inadvertently rounded down to 19043the nearest DWORD. Buffers are always Byte-accessible. 19044 19045 ASL Compiler, version X2024: 19046 19047Fixed a problem where the Switch() operator would either fault or 19048hang the compiler. Note however, that the AML code for this ACPI 190492.0 operator is not yet implemented. 19050 19051Compiler uses the new AcpiOsGetTimer interface to obtain compile 19052timings. 19053 19054Implementation of the CreateField operator automatically converts 19055a reference to a named field within a resource descriptor from a 19056byte offset to a bit offset if required. 19057 19058Added some missing named fields from the resource descriptor 19059support. These are the names that are automatically created by the 19060compiler to reference fields within a descriptor. They are only 19061valid at compile time and are not passed through to the AML 19062interpreter. 19063 19064Resource descriptor named fields are now typed as Integers and 19065subject to compile-time typechecking when used in expressions. 19066 19067 ------------------------------------------ 19068Summary of changes for this label: 05_18_01 19069 19070 ACPI CA Core Subsystem: 19071 19072Fixed a couple of problems in the Field support code where bits 19073from adjacent fields could be returned along with the proper field 19074bits. Restructured the field support code to improve performance, 19075readability and maintainability. 19076 19077New DEBUG_PRINTP macro automatically inserts the procedure name 19078into the output, saving hundreds of copies of procedure name 19079strings within the source, shrinking the memory footprint of the 19080debug version of the core subsystem. 19081 19082 Source Code Structure: 19083 19084The source code directory tree was restructured to reflect the 19085current organization of the component architecture. Some files 19086and directories have been moved and/or renamed. 19087 19088 Linux: 19089 19090Fixed leaking kacpidpc processes. 19091 19092Fixed queueing event data even when /proc/acpi/event is not 19093opened. 19094 19095 ASL Compiler, version X2020: 19096 19097Memory allocation performance enhancement - over 24X compile time 19098improvement on large ASL files. Parse nodes and namestring 19099buffers are now allocated from a large internal compiler buffer. 19100 19101The temporary .SRC file is deleted unless the "-s" option is 19102specified 19103 19104The "-d" debug output option now sends all output to the .DBG file 19105instead of the console. 19106 19107"External" second parameter is now optional 19108 19109"ElseIf" syntax now properly allows the predicate 19110 19111Last operand to "Load" now recognized as a Target operand 19112 19113Debug object can now be used anywhere as a normal object. 19114 19115ResourceTemplate now returns an object of type BUFFER 19116 19117EISAID now returns an object of type INTEGER 19118 19119"Index" now works with a STRING operand 19120 19121"LoadTable" now accepts optional parameters 19122 19123"ToString" length parameter is now optional 19124 19125"Interrupt (ResourceType," parse error fixed. 19126 19127"Register" with a user-defined region space parse error fixed 19128 19129Escaped backslash at the end of a string ("\\") scan/parse error 19130fixed 19131 19132"Revision" is now an object of type INTEGER. 19133 19134 19135 19136------------------------------------------ 19137Summary of changes for this label: 05_02_01 19138 19139Linux: 19140 19141/proc/acpi/event now blocks properly. 19142 19143Removed /proc/sys/acpi. You can still dump your DSDT from 19144/proc/acpi/dsdt. 19145 19146 ACPI CA Core Subsystem: 19147 19148Fixed a problem introduced in the previous label where some of the 19149"small" resource descriptor types were not recognized. 19150 19151Improved error messages for the case where an ASL Field is outside 19152the range of the parent operation region. 19153 19154 ASL Compiler, version X2018: 19155 19156 19157Added error detection for ASL Fields that extend beyond the length 19158of the parent operation region (only if the length of the region 19159is known at compile time.) This includes fields that have a 19160minimum access width that is smaller than the parent region, and 19161individual field units that are partially or entirely beyond the 19162extent of the parent. 19163 19164 19165 19166------------------------------------------ 19167Summary of changes for this label: 04_27_01 19168 19169 ACPI CA Core Subsystem: 19170 19171Fixed a problem where the namespace mutex could be released at the 19172wrong time during execution of AcpiRemoveAddressSpaceHandler. 19173 19174Added optional thread ID output for debug traces, to simplify 19175debugging of multiple threads. Added context switch notification 19176when the debug code realizes that a different thread is now 19177executing ACPI code. 19178 19179Some additional external data types have been prefixed with the 19180string "ACPI_" for consistency. This may effect existing code. 19181The data types affected are the external callback typedefs - e.g., 19182 19183WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 19184 19185 Linux: 19186 19187Fixed an issue with the OSL semaphore implementation where a 19188thread was waking up with an error from receiving a SIGCHLD 19189signal. 19190 19191Linux version of ACPI CA now uses the system C library for string 19192manipulation routines instead of a local implementation. 19193 19194Cleaned up comments and removed TBDs. 19195 19196 ASL Compiler, version X2017: 19197 19198Enhanced error detection and reporting for all file I/O 19199operations. 19200 19201 Documentation: 19202 19203Programmer Reference updated to version 1.06. 19204 19205 19206 19207------------------------------------------ 19208Summary of changes for this label: 04_13_01 19209 19210 ACPI CA Core Subsystem: 19211 19212Restructured support for BufferFields and RegionFields. 19213BankFields support is now fully operational. All known 32-bit 19214limitations on field sizes have been removed. Both BufferFields 19215and (Operation) RegionFields are now supported by the same field 19216management code. 19217 19218Resource support now supports QWORD address and IO resources. The 1921916/32/64 bit address structures and the Extended IRQ structure 19220have been changed to properly handle Source Resource strings. 19221 19222A ThreadId of -1 is now used to indicate a "mutex not acquired" 19223condition internally and must never be returned by AcpiOsThreadId. 19224This reserved value was changed from 0 since Unix systems allow a 19225thread ID of 0. 19226 19227Linux: 19228 19229Driver code reorganized to enhance portability 19230 19231Added a kernel configuration option to control ACPI_DEBUG 19232 19233Fixed the EC driver to honor _GLK. 19234 19235ASL Compiler, version X2016: 19236 19237Fixed support for the "FixedHw" keyword. Previously, the FixedHw 19238address space was set to 0, not 0x7f as it should be. 19239 19240 ------------------------------------------ 19241Summary of changes for this label: 03_13_01 19242 19243 ACPI CA Core Subsystem: 19244 19245During ACPI initialization, the _SB_._INI method is now run if 19246present. 19247 19248Notify handler fix - notifies are deferred until the parent method 19249completes execution. This fixes the "mutex already acquired" 19250issue seen occasionally. 19251 19252Part of the "implicit conversion" rules in ACPI 2.0 have been 19253found to cause compatibility problems with existing ASL/AML. The 19254convert "result-to-target-type" implementation has been removed 19255for stores to method Args and Locals. Source operand conversion 19256is still fully implemented. Possible changes to ACPI 2.0 19257specification pending. 19258 19259Fix to AcpiRsCalculatePciRoutingTableLength to return correct 19260length. 19261 19262Fix for compiler warnings for 64-bit compiles. 19263 19264 Linux: 19265 19266/proc output aligned for easier parsing. 19267 19268Release-version compile problem fixed. 19269 19270New kernel configuration options documented in Configure.help. 19271 19272IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 19273context" message. 19274 19275 OSPM: 19276 19277Power resource driver integrated with bus manager. 19278 19279Fixed kernel fault during active cooling for thermal zones. 19280 19281Source Code: 19282 19283The source code tree has been restructured. 19284 19285 19286 19287------------------------------------------ 19288Summary of changes for this label: 03_02_01 19289 19290 Linux OS Services Layer (OSL): 19291 19292Major revision of all Linux-specific code. 19293 19294Modularized all ACPI-specific drivers. 19295 19296Added new thermal zone and power resource drivers. 19297 19298Revamped /proc interface (new functionality is under /proc/acpi). 19299 19300New kernel configuration options. 19301 19302 Linux known issues: 19303 19304New kernel configuration options not documented in Configure.help 19305yet. 19306 19307 19308Module dependencies not currently implemented. If used, they 19309should be loaded in this order: busmgr, power, ec, system, 19310processor, battery, ac_adapter, button, thermal. 19311 19312Modules will not load if CONFIG_MODVERSION is set. 19313 19314IBM 600E - entering S5 may reboot instead of shutting down. 19315 19316IBM 600E - Sleep button may generate "Invalid <NULL> context" 19317message. 19318 19319Some systems may fail with "execution mutex already acquired" 19320message. 19321 19322 ACPI CA Core Subsystem: 19323 19324Added a new OSL Interface, AcpiOsGetThreadId. This was required 19325for the deadlock detection code. Defined to return a non-zero, 32- 19326bit thread ID for the currently executing thread. May be a non- 19327zero constant integer on single-thread systems. 19328 19329Implemented deadlock detection for internal subsystem mutexes. We 19330may add conditional compilation for this code (debug only) later. 19331 19332ASL/AML Mutex object semantics are now fully supported. This 19333includes multiple acquires/releases by owner and support for the 19334 19335Mutex SyncLevel parameter. 19336 19337A new "Force Release" mechanism automatically frees all ASL 19338Mutexes that have been acquired but not released when a thread 19339exits the interpreter. This forces conformance to the ACPI spec 19340("All mutexes must be released when an invocation exits") and 19341prevents deadlocked ASL threads. This mechanism can be expanded 19342(later) to monitor other resource acquisitions if OEM ASL code 19343continues to misbehave (which it will). 19344 19345Several new ACPI exception codes have been added for the Mutex 19346support. 19347 19348Recursive method calls are now allowed and supported (the ACPI 19349spec does in fact allow recursive method calls.) The number of 19350recursive calls is subject to the restrictions imposed by the 19351SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 19352parameter. 19353 19354Implemented support for the SyncLevel parameter for control 19355methods (ACPI 2.0 feature) 19356 19357Fixed a deadlock problem when multiple threads attempted to use 19358the interpreter. 19359 19360Fixed a problem where the string length of a String package 19361element was not always set in a package returned from 19362AcpiEvaluateObject. 19363 19364Fixed a problem where the length of a String package element was 19365not always included in the length of the overall package returned 19366from AcpiEvaluateObject. 19367 19368Added external interfaces (Acpi*) to the ACPI debug memory 19369manager. This manager keeps a list of all outstanding 19370allocations, and can therefore detect memory leaks and attempts to 19371free memory blocks more than once. Useful for code such as the 19372power manager, etc. May not be appropriate for device drivers. 19373Performance with the debug code enabled is slow. 19374 19375The ACPI Global Lock is now an optional hardware element. 19376 19377 ASL Compiler Version X2015: 19378 19379Integrated changes to allow the compiler to be generated on 19380multiple platforms. 19381 19382Linux makefile added to generate the compiler on Linux 19383 19384 Source Code: 19385 19386All platform-specific headers have been moved to their own 19387subdirectory, Include/Platform. 19388 19389New source file added, Interpreter/ammutex.c 19390 19391New header file, Include/acstruct.h 19392 19393 Documentation: 19394 19395The programmer reference has been updated for the following new 19396interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 19397 19398 ------------------------------------------ 19399Summary of changes for this label: 02_08_01 19400 19401Core ACPI CA Subsystem: Fixed a problem where an error was 19402incorrectly returned if the return resource buffer was larger than 19403the actual data (in the resource interfaces). 19404 19405References to named objects within packages are resolved to the 19406 19407full pathname string before packages are returned directly (via 19408the AcpiEvaluateObject interface) or indirectly via the resource 19409interfaces. 19410 19411Linux OS Services Layer (OSL): 19412 19413Improved /proc battery interface. 19414 19415 19416Added C-state debugging output and other miscellaneous fixes. 19417 19418ASL Compiler Version X2014: 19419 19420All defined method arguments can now be used as local variables, 19421including the ones that are not actually passed in as parameters. 19422The compiler tracks initialization of the arguments and issues an 19423exception if they are used without prior assignment (just like 19424locals). 19425 19426The -o option now specifies a filename prefix that is used for all 19427output files, including the AML output file. Otherwise, the 19428default behavior is as follows: 1) the AML goes to the file 19429specified in the DSDT. 2) all other output files use the input 19430source filename as the base. 19431 19432 ------------------------------------------ 19433Summary of changes for this label: 01_25_01 19434 19435Core ACPI CA Subsystem: Restructured the implementation of object 19436store support within the interpreter. This includes support for 19437the Store operator as well as any ASL operators that include a 19438target operand. 19439 19440Partially implemented support for Implicit Result-to-Target 19441conversion. This is when a result object is converted on the fly 19442to the type of an existing target object. Completion of this 19443support is pending further analysis of the ACPI specification 19444concerning this matter. 19445 19446CPU-specific code has been removed from the subsystem (hardware 19447directory). 19448 19449New Power Management Timer functions added 19450 19451Linux OS Services Layer (OSL): Moved system state transition code 19452to the core, fixed it, and modified Linux OSL accordingly. 19453 19454Fixed C2 and C3 latency calculations. 19455 19456 19457We no longer use the compilation date for the version message on 19458initialization, but retrieve the version from AcpiGetSystemInfo(). 19459 19460Incorporated for fix Sony VAIO machines. 19461 19462Documentation: The Programmer Reference has been updated and 19463reformatted. 19464 19465 19466ASL Compiler: Version X2013: Fixed a problem where the line 19467numbering and error reporting could get out of sync in the 19468presence of multiple include files. 19469 19470 ------------------------------------------ 19471Summary of changes for this label: 01_15_01 19472 19473Core ACPI CA Subsystem: 19474 19475Implemented support for type conversions in the execution of the 19476ASL Concatenate operator (The second operand is converted to 19477match the type of the first operand before concatenation.) 19478 19479Support for implicit source operand conversion is partially 19480implemented. The ASL source operand types Integer, Buffer, and 19481String are freely interchangeable for most ASL operators and are 19482converted by the interpreter on the fly as required. Implicit 19483Target operand conversion (where the result is converted to the 19484target type before storing) is not yet implemented. 19485 19486Support for 32-bit and 64-bit BCD integers is implemented. 19487 19488Problem fixed where a field read on an aligned field could cause a 19489read past the end of the field. 19490 19491New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 19492does not return a value, but the caller expects one. (The ASL 19493compiler flags this as a warning.) 19494 19495ASL Compiler: 19496 19497Version X2011: 194981. Static typechecking of all operands is implemented. This 19499prevents the use of invalid objects (such as using a Package where 19500an Integer is required) at compile time instead of at interpreter 19501run-time. 195022. The ASL source line is printed with ALL errors and warnings. 195033. Bug fix for source EOF without final linefeed. 195044. Debug option is split into a parse trace and a namespace trace. 195055. Namespace output option (-n) includes initial values for 19506integers and strings. 195076. Parse-only option added for quick syntax checking. 195087. Compiler checks for duplicate ACPI name declarations 19509 19510Version X2012: 195111. Relaxed typechecking to allow interchangeability between 19512strings, integers, and buffers. These types are now converted by 19513the interpreter at runtime. 195142. Compiler reports time taken by each internal subsystem in the 19515debug output file. 19516 19517 19518 ------------------------------------------ 19519Summary of changes for this label: 12_14_00 19520 19521ASL Compiler: 19522 19523This is the first official release of the compiler. Since the 19524compiler requires elements of the Core Subsystem, this label 19525synchronizes everything. 19526 19527------------------------------------------ 19528Summary of changes for this label: 12_08_00 19529 19530 19531Fixed a problem where named references within the ASL definition 19532of both OperationRegions and CreateXXXFields did not work 19533properly. The symptom was an AE_AML_OPERAND_TYPE during 19534initialization of the region/field. This is similar (but not 19535related internally) to the problem that was fixed in the last 19536label. 19537 19538Implemented both 32-bit and 64-bit support for the BCD ASL 19539functions ToBCD and FromBCD. 19540 19541Updated all legal headers to include "2000" in the copyright 19542years. 19543 19544 ------------------------------------------ 19545Summary of changes for this label: 12_01_00 19546 19547Fixed a problem where method invocations within the ASL definition 19548of both OperationRegions and CreateXXXFields did not work 19549properly. The symptom was an AE_AML_OPERAND_TYPE during 19550initialization of the region/field: 19551 19552 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 19553[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 19554(0x3005) 19555 19556Fixed a problem where operators with more than one nested 19557subexpression would fail. The symptoms were varied, by mostly 19558AE_AML_OPERAND_TYPE errors. This was actually a rather serious 19559problem that has gone unnoticed until now. 19560 19561 Subtract (Add (1,2), Multiply (3,4)) 19562 19563Fixed a problem where AcpiGetHandle didn't quite get fixed in the 19564previous build (The prefix part of a relative path was handled 19565incorrectly). 19566 19567Fixed a problem where Operation Region initialization failed if 19568the operation region name was a "namepath" instead of a simple 19569"nameseg". Symptom was an AE_NO_OPERAND error. 19570 19571Fixed a problem where an assignment to a local variable via the 19572indirect RefOf mechanism only worked for the first such 19573assignment. Subsequent assignments were ignored. 19574 19575 ------------------------------------------ 19576Summary of changes for this label: 11_15_00 19577 19578ACPI 2.0 table support with backwards support for ACPI 1.0 and the 195790.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 19580the AML interpreter does NOT have support for the new 2.0 ASL 19581grammar terms at this time. 19582 19583All ACPI hardware access is via the GAS structures in the ACPI 2.0 19584FADT. 19585 19586All physical memory addresses across all platforms are now 64 bits 19587wide. Logical address width remains dependent on the platform 19588(i.e., "void *"). 19589 19590AcpiOsMapMemory interface changed to a 64-bit physical address. 19591 19592The AML interpreter integer size is now 64 bits, as per the ACPI 195932.0 specification. 19594 19595For backwards compatibility with ACPI 1.0, ACPI tables with a 19596revision number less than 2 use 32-bit integers only. 19597 19598Fixed a problem where the evaluation of OpRegion operands did not 19599always resolve them to numbers properly. 19600 19601------------------------------------------ 19602Summary of changes for this label: 10_20_00 19603 19604Fix for CBN_._STA issue. This fix will allow correct access to 19605CBN_ OpRegions when the _STA returns 0x8. 19606 19607Support to convert ACPI constants (Ones, Zeros, One) to actual 19608values before a package object is returned 19609 19610Fix for method call as predicate to if/while construct causing 19611incorrect if/while behavior 19612 19613Fix for Else block package lengths sometimes calculated wrong (if 19614block > 63 bytes) 19615 19616Fix for Processor object length field, was always zero 19617 19618Table load abort if FACP sanity check fails 19619 19620Fix for problem with Scope(name) if name already exists 19621 19622Warning emitted if a named object referenced cannot be found 19623(resolved) during method execution. 19624 19625 19626 19627 19628 19629------------------------------------------ 19630Summary of changes for this label: 9_29_00 19631 19632New table initialization interfaces: AcpiInitializeSubsystem no 19633longer has any parameters AcpiFindRootPointer - Find the RSDP (if 19634necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 19635>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 19636AcpiLoadTables 19637 19638Note: These interface changes require changes to all existing OSDs 19639 19640The PCI_Config default address space handler is always installed 19641at the root namespace object. 19642 19643------------------------------------------- 19644Summary of changes for this label: 09_15_00 19645 19646The new initialization architecture is implemented. New 19647interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 19648AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 19649 19650(Namespace is automatically loaded when a table is loaded) 19651 19652The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1965352 bytes to 32 bytes. There is usually one of these for every 19654namespace object, so the memory savings is significant. 19655 19656Implemented just-in-time evaluation of the CreateField operators. 19657 19658Bug fixes for IA-64 support have been integrated. 19659 19660Additional code review comments have been implemented 19661 19662The so-called "third pass parse" has been replaced by a final walk 19663through the namespace to initialize all operation regions (address 19664spaces) and fields that have not yet been initialized during the 19665execution of the various _INI and REG methods. 19666 19667New file - namespace/nsinit.c 19668 19669------------------------------------------- 19670Summary of changes for this label: 09_01_00 19671 19672Namespace manager data structures have been reworked to change the 19673primary object from a table to a single object. This has 19674resulted in dynamic memory savings of 3X within the namespace and 196752X overall in the ACPI CA subsystem. 19676 19677Fixed problem where the call to AcpiEvFindPciRootBuses was 19678inadvertently left commented out. 19679 19680Reduced the warning count when generating the source with the GCC 19681compiler. 19682 19683Revision numbers added to each module header showing the 19684SourceSafe version of the file. Please refer to this version 19685number when giving us feedback or comments on individual modules. 19686 19687The main object types within the subsystem have been renamed to 19688clarify their purpose: 19689 19690ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 19691ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 19692ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 19693 19694NOTE: no changes to the initialization sequence are included in 19695this label. 19696 19697------------------------------------------- 19698Summary of changes for this label: 08_23_00 19699 19700Fixed problem where TerminateControlMethod was being called 19701multiple times per method 19702 19703Fixed debugger problem where single stepping caused a semaphore to 19704be oversignalled 19705 19706Improved performance through additional parse object caching - 19707added ACPI_EXTENDED_OP type 19708 19709------------------------------------------- 19710Summary of changes for this label: 08_10_00 19711 19712Parser/Interpreter integration: Eliminated the creation of 19713complete parse trees for ACPI tables and control methods. 19714Instead, parse subtrees are created and then deleted as soon as 19715they are processed (Either entered into the namespace or executed 19716by the interpreter). This reduces the use of dynamic kernel 19717memory significantly. (about 10X) 19718 19719Exception codes broken into classes and renumbered. Be sure to 19720recompile all code that includes acexcep.h. Hopefully we won't 19721have to renumber the codes again now that they are split into 19722classes (environment, programmer, AML code, ACPI table, and 19723internal). 19724 19725Fixed some additional alignment issues in the Resource Manager 19726subcomponent 19727 19728Implemented semaphore tracking in the AcpiExec utility, and fixed 19729several places where mutexes/semaphores were being unlocked 19730without a corresponding lock operation. There are no known 19731semaphore or mutex "leaks" at this time. 19732 19733Fixed the case where an ASL Return operator is used to return an 19734unnamed package. 19735 19736------------------------------------------- 19737Summary of changes for this label: 07_28_00 19738 19739Fixed a problem with the way addresses were calculated in 19740AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 19741manifested itself when a Field was created with WordAccess or 19742DwordAccess, but the field unit defined within the Field was less 19743 19744than a Word or Dword. 19745 19746Fixed a problem in AmlDumpOperands() module's loop to pull 19747operands off of the operand stack to display information. The 19748problem manifested itself as a TLB error on 64-bit systems when 19749accessing an operand stack with two or more operands. 19750 19751Fixed a problem with the PCI configuration space handlers where 19752context was getting confused between accesses. This required a 19753change to the generic address space handler and address space 19754setup definitions. Handlers now get both a global handler context 19755(this is the one passed in by the user when executing 19756AcpiInstallAddressSpaceHandler() and a specific region context 19757that is unique to each region (For example, the _ADR, _SEG and 19758_BBN values associated with a specific region). The generic 19759function definitions have changed to the following: 19760 19761typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 19762UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 19763*HandlerContext, // This used to be void *Context void 19764*RegionContext); // This is an additional parameter 19765 19766typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 19767RegionHandle, UINT32 Function, void *HandlerContext, void 19768**RegionContext); // This used to be **ReturnContext 19769 19770------------------------------------------- 19771Summary of changes for this label: 07_21_00 19772 19773Major file consolidation and rename. All files within the 19774interpreter have been renamed as well as most header files. This 19775was done to prevent collisions with existing files in the host 19776OSs -- filenames such as "config.h" and "global.h" seem to be 19777quite common. The VC project files have been updated. All 19778makefiles will require modification. 19779 19780The parser/interpreter integration continues in Phase 5 with the 19781implementation of a complete 2-pass parse (the AML is parsed 19782twice) for each table; This avoids the construction of a huge 19783parse tree and therefore reduces the amount of dynamic memory 19784required by the subsystem. Greater use of the parse object cache 19785means that performance is unaffected. 19786 19787Many comments from the two code reviews have been rolled in. 19788 19789The 64-bit alignment support is complete. 19790 19791------------------------------------------- 19792Summary of changes for this label: 06_30_00 19793 19794With a nod and a tip of the hat to the technology of yesteryear, 19795we've added support in the source code for 80 column output 19796devices. The code is now mostly constrained to 80 columns or 19797less to support environments and editors that 1) cannot display 19798or print more than 80 characters on a single line, and 2) cannot 19799disable line wrapping. 19800 19801A major restructuring of the namespace data structure has been 19802completed. The result is 1) cleaner and more 19803understandable/maintainable code, and 2) a significant reduction 19804in the dynamic memory requirement for each named ACPI object 19805(almost half). 19806 19807------------------------------------------- 19808Summary of changes for this label: 06_23_00 19809 19810Linux support has been added. In order to obtain approval to get 19811the ACPI CA subsystem into the Linux kernel, we've had to make 19812quite a few changes to the base subsystem that will affect all 19813users (all the changes are generic and OS- independent). The 19814effects of these global changes have been somewhat far reaching. 19815Files have been merged and/or renamed and interfaces have been 19816renamed. The major changes are described below. 19817 19818Osd* interfaces renamed to AcpiOs* to eliminate namespace 19819pollution/confusion within our target kernels. All OSD 19820interfaces must be modified to match the new naming convention. 19821 19822Files merged across the subsystem. A number of the smaller source 19823and header files have been merged to reduce the file count and 19824increase the density of the existing files. There are too many 19825to list here. In general, makefiles that call out individual 19826files will require rebuilding. 19827 19828Interpreter files renamed. All interpreter files now have the 19829prefix am* instead of ie* and is*. 19830 19831Header files renamed: The acapi.h file is now acpixf.h. The 19832acpiosd.h file is now acpiosxf.h. We are removing references to 19833the acronym "API" since it is somewhat windowsy. The new name is 19834"external interface" or xface or xf in the filenames.j 19835 19836 19837All manifest constants have been forced to upper case (some were 19838mixed case.) Also, the string "ACPI_" has been prepended to many 19839(not all) of the constants, typedefs, and structs. 19840 19841The globals "DebugLevel" and "DebugLayer" have been renamed 19842"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 19843 19844All other globals within the subsystem are now prefixed with 19845"AcpiGbl_" Internal procedures within the subsystem are now 19846prefixed with "Acpi" (with only a few exceptions). The original 19847two-letter abbreviation for the subcomponent remains after "Acpi" 19848- for example, CmCallocate became AcpiCmCallocate. 19849 19850Added a source code translation/conversion utility. Used to 19851generate the Linux source code, it can be modified to generate 19852other types of source as well. Can also be used to cleanup 19853existing source by removing extraneous spaces and blank lines. 19854Found in tools/acpisrc/* 19855 19856OsdUnMapMemory was renamed to OsdUnmapMemory and then 19857AcpiOsUnmapMemory. (UnMap became Unmap). 19858 19859A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 19860When set to one, this indicates that the caller wants to use the 19861 19862semaphore as a mutex, not a counting semaphore. ACPI CA uses 19863both types. However, implementers of this call may want to use 19864different OS primitives depending on the type of semaphore 19865requested. For example, some operating systems provide separate 19866 19867"mutex" and "semaphore" interfaces - where the mutex interface is 19868much faster because it doesn't have all the overhead of a full 19869semaphore implementation. 19870 19871Fixed a deadlock problem where a method that accesses the PCI 19872address space can block forever if it is the first access to the 19873space. 19874 19875------------------------------------------- 19876Summary of changes for this label: 06_02_00 19877 19878Support for environments that cannot handle unaligned data 19879accesses (e.g. firmware and OS environments devoid of alignment 19880handler technology namely SAL/EFI and the IA-64 Linux kernel) has 19881been added (via configurable macros) in these three areas: - 19882Transfer of data from the raw AML byte stream is done via byte 19883moves instead of word/dword/qword moves. - External objects are 19884aligned within the user buffer, including package elements (sub- 19885objects). - Conversion of name strings to UINT32 Acpi Names is now 19886done byte-wise. 19887 19888The Store operator was modified to mimic Microsoft's 19889implementation when storing to a Buffer Field. 19890 19891Added a check of the BM_STS bit before entering C3. 19892 19893The methods subdirectory has been obsoleted and removed. A new 19894file, cmeval.c subsumes the functionality. 19895 19896A 16-bit (DOS) version of AcpiExec has been developed. The 19897makefile is under the acpiexec directory. 19898