1---------------------------------------- 231 March 2022. Summary of changes for version 20220331: 3 40) Global changes: 5 6Update all copyright notices to the year 2022. This effects all source 7modules, as well as utility signons. 8 9 101) ACPICA kernel-resident subsystem: 11 12For the ASL Sleep() operator, issue a warning if the sleep value is 13greater than 10 Milliseconds. Quick boottime is important, so warn about 14sleeps greater than 10 ms. Distribution Linux kernels reach initrd in 350 15ms, so excessive delays should be called out. 10 ms is chosen randomly, 16but three of such delays would already make up ten percent of the 17boottime. 18 19Namespace: Avoid attempting to walk the Namespace if the Namespace does 20not exist. 21 22AML interpreter/iASL compiler: Add new Acpi 6.4 semantics for the 23LoadTable and Load operators. DDB_HANDLE is gone, now loadtable returns a 24pass/fail integer. Now load returns a pass/fail integer, as well as 25storing the return value in an optional 2nd argument. 26 27Headers: Use uintptr_t and offsetof() in Linux kernel builds. To avoid 28"performing pointer subtraction with a null pointer has undefined 29behavior" compiler warnings, use uintptr_t and offsetof() that are always 30available during Linux kernel builds to define ACPI_UINTPTR_T and the 31ACPI_TO_INTEGER() and ACPI_OFFSET() macros when building the ACPICA code 32in the Linux kernel. 33 34Added support for the Windows 11 _OSI string ("Windows 2021"). Submitted 35by superm1. 36 37executer/exsystem: Inform users about ACPI spec violation for the Stall() 38operator. Values greater than 100 microseconds violate the ACPI 39specification, so warn users about it. From the ACPI Specification 40version 6.2 Errata A, 19.6.128 *Stall (Stall for a Short Time)*: 41> The implementation of Stall is OS-specific, but must not relinquish 42> control of the processor. Because of this, delays longer than 100 43> microseconds must use Sleep instead of Stall. 44 45 462) iASL Compiler/Disassembler and ACPICA tools: 47 48Data Table Compiler/Disassembler: Add support for the APMT table - ARM 49Performance Monitoring Unit table. Submitted by @bwicaksononv. 50 51Data Table Compiler/Disassembler: For MADT, add support for the OEM- 52defined subtables (Types 0x80-0x7F). 53 54Data Table Compiler: Fixed a problem with support for the SDEV table, 55where a subtable Length was not computed correctly. 56 57Data Table Compiler/Disassembler: Add/fix the CFMWS subtable to the CEDT 58Acpi table support. 59 60Data Table Compiler/Disassembler: Fix a compile issue with the CEDT and 61add template. Submitted by MasterDrogo. 62 63Data Table Compiler/Disassembler: NHLT Changes provided by Piotr Maziarz: 64iASL/NHLT: Rename linux specific structures to DeviceInfo to improve 65readability of the code. 66iASL/NHLT: Fix parsing undocumented bytes at the end of Endpoint. 67Undocumented bytes at the end of Endpoint Descriptor can be present 68independently of Linux-specific structures. Their size can also vary. 69iASL/NHLT: Treat TableTerminator as SpecificConfig. SpecificConfig has 4 70bytes of size and then an amount of bytes specified by size. All of the 71terminators that I've seen had a size equal to 4, but theoretically it 72can vary. 73 74iASL/AcpiExec: Use _exit instead of exit in signal handers (ctrl-C). 75 76iASL: Remove a remark due to excessive output. Removed a remark for 77duplicate Offset() operators, due to a user complaint. 78 79---------------------------------------- 8017 December 2021. Summary of changes for version 20211217: 81 821) ACPICA kernel-resident subsystem: 83 84Hardware: Do not flush CPU cache when entering S4 and S5. According to 85ACPI 6.4, Section 16.2, the CPU cache flushing is required on entering to 86S1, S2, and S3, but the ACPICA code flushes the CPU cache regardless of 87the sleep state. Blind cache flush on entering S5 causes problems for 88TDX. 89 90Avoid subobject buffer overflow when validating RSDP signature. Since the 91Signature member is accessed through an ACPI_TABLE_HEADER, the pointer to 92it is only to a 4-char array, and so trying to read past the 4th 93character, as will be done when it is an RSDP, reads beyond the bounds of 94the accessed member. Contributed by jrtc27. 95 96Add support for PCC Opregion special context data. PCC Opregion added in 97ACPIC 6.3 requires special context data similar to GPIO and Generic 98Serial Bus as it needs to know the internal PCC buffer and its length as 99well as the PCC channel index when the opregion handler is being executed 100by the OSPM. Adds support for the special context data needed by PCC 101Opregion. Submitted by Sudeep Holla <sudeep.holla@arm.com> 102 1032) iASL Compiler/Disassembler and ACPICA tools: 104 105iASL: Completed compiler support for the NHLT ACPI table. 106 107iASL/NHLT table: Fixed a reported problem where a fault would occur 108during disassembly of a "Linux-Specific" section if the "Specific Data" 109part was not present. 110 111iASL: Added full support (compiler and disassembler) for the AGDI ACPI 112table. Contributed by: Ilkka Koskinen <ilkka@os.amperecomputing.com>. 113 114iASL: Added full support for the TDEL ACPI table. 115 116iASL table compiler: FADT support updates: 1171) Allow the 32-bit DSDT address to be zero. 1182) Issue error if both the 32-bit and 64-bit DSDT addresses are zero. 119 120iASL: Fix unaligned accesses to local cache allocations. Contributed by 121jrtc27. 122 123iASL: Open binary input files in binary mode, not text mode Affects 124binary input AML files, as well as binary data table files, for 125disassembly. 126 127---------------------------------------- 12830 September 2021. Summary of changes for version 20210930: 129 130This release is available at https://acpica.org/downloads 131 1321) ACPICA kernel-resident subsystem: 133 134Hardware: Avoid evaluating methods too early during system resume. During 135wakeup from system-wide sleep states, AcpiGetSleepTypeData() is called 136and it tries to get memory from the OS in order to evaluate a control 137method, but if KFENCE is enabled in the Linux kernel, the memory 138allocation attempt causes an IRQ work to be queued and a self-IPI to be 139sent to the CPU running the code which requires the memory controller to 140be ready, so if that happens too early in the wakeup path, it doesn't 141work. 142 143Prevent that from taking place by calling AcpiGetSleepTypeData() for S0 144upfront, when preparing to enter a given sleep state, and saving the data 145obtained by it for later use during system wakeup. 146 147Added a new _OSI string, "Windows 2020". Posted by superm1. 148 1492) iASL Compiler/Disassembler and ACPICA tools: 150 151iASL compiler: Updated the check for usage of _CRS, _DIS, _PRS, and _SRS 152objects: 153New/latest rules: Under a Device Object: 154 1) If _PRS is present, must have _CRS and _SRS 155 2) If _SRS is present, must have _PRS (_PRS requires _CRS and 156_SRS) 157 3) If _DIS is present, must have _SRS (_SRS requires _PRS, _PRS 158requires _CRS and _SRS) 159 4) If _SRS is present, probably should have a _DIS (Remark only) 160 161iASL table disassembler: Added disassembly support for the NHLT ACPI 162table. Note: support for Vendor-defined microphone arrays and SNR 163extensions are not supported at this time -- mostly due to a lack of 164example tables. Actual compiler support for NHLT is forthcoming. 165 166Added a new subtable type for ACPI 6.4 SRAT Generic Port Affinity. It 167uses the same subtable structure as the existing Generic Initiator 168Affinity type. 169 170Added the flag for online capable in the MADT, introduced in ACPI 6.3. 171Posted by superm1. 172 1733) ACPICA documentation: Updated the legal info (that appears at the 174start of the Documents) to clarify distribution rights that are granted. 175 176 177---------------------------------------- 17830 July 2021. Summary of changes for version 20210730: 179 180This release is available at https://acpica.org/downloads 181 1821) ACPICA kernel-resident subsystem: 183 1842) iASL Compiler/Disassembler and ACPICA tools: 185 186iasl: Check usage of _CRS, _DIS, _PRS, and _SRS objects (July 2021). 187 Under the Device Object: 188 1) If _DIS is present, must have a _CRS and _SRS 189 2) If _PRS is present, must have a _CRS, _DIS, and _SRS 190 3) If _SRS is present, must have a _CRS and _DIS 191A warning will be issued for each of these cases. 192Note: For existing ASL/projects, these warnings may be disabled by 193specifying this on the command line: 194"-vw 3141" 195 196iASL Table Disassembler/Table compiler: Fix for WPBT table with no 197command-line arguments. Handle the case where the Command-line 198Arguments table field does not exist (zero). 199 200Headers: Add new DBG2 Serial Port Subtypes 201The Microsoft Debug Port Table 2 (DBG2) specification revision 202September 21, 2020 comprises additional Serial Port Subtypes [1]. 203Reflect that in the actbl1.h header file. Submitted by: 204semihalf-wojtas-marcin 205 206iASL: Add full support for the AEST table (data compiler) 207Includes support in the table compiler and the disassembler. 208 209Add PRMT module header to facilitate parsing. 210This structure is used in to parse PRMT in other Operating Systems 211that relies on using subtable headers in order to parse ACPI tables. 212Although the PRMT doesn't have "subtables" it has a list of module 213information structures that act as subtables. 214 215iASL: Table disassembler: Add missing strings to decode subtable types. 216Includes the MADT and CEDT tables. 217 218 219---------------------------------------- 22004 June 2021. Summary of changes for version 20210604: 221 2221) ACPICA kernel-resident subsystem: 223 224Cleaned up (delete) the context mutex during local address handler object 225deletion. 226 227Fixed a memory leak caused by the _CID repair function. 228 229Added support for PlatformRtMechanism OperationRegion handler. Adds a new 230utility function, AcpiUtConvertUuidToString. Writing a buffer to a 231PlatformRtMechanism fieldunit invokes a bidirectional transaction. The 232input buffer contains 26 bytes containing 9 bytes of status, a command 233byte and a 16-byte UUID. This change will simply pass this incoming 234buffer to a handler registered by the OS. 235 2362) iASL Compiler/Disassembler and ACPICA tools: 237 238Added full support for the PRMT ACPI table (Platform Runtime Mechanism 239Table). Includes support in the iASL compiler, the disassembler, and the 240template generator. 241 242Added full support for the BDAT (BIOS Data ACPI Table) ACPI table. 243 244Added full support for the RGRT (Regulatory Graphics Resource Table) ACPI 245table. 246 247Added full support for the SVKL (Storage Volume Key Location Table) ACPI 248table. Header file support from Kuppuswamy Sathyanarayanan 249<sathyanarayanan.kuppuswamy@linux.intel.com>. 250 251Completed full support for the IVRS (I/O Virtualization Reporting 252Structure) ACPI table. Added compiler support for IVRS, updated 253disassembler support. Adds a new utility, UtIsIdInteger, to determine if 254a HID/CID is an integer or a string. 255 256Headers: Added more structs to the CEDT table: CXL fixed memory window 257structure. 258 259ACPI 6.4: MADT: added Multiprocessor Wakeup Mailbox Structure. 260 261---------------------------------------- 26231 March 2021. Summary of changes for version 20210331: 263 264This release is available at https://acpica.org/downloads, and includes 265all ACPI 6.4 support 266 2671) ACPICA kernel-resident subsystem: 268ACPI 6.4: iASL: deprecate DDBHandleObj keyword 269Always create namespace nodes using AcpiNsCreateNode(). ACPICA is 270allocating an object using kmalloc(), but then frees it 271using kmem_cache_free(<"Acpi-Namespace" kmem_cache>). This is wrong. 272Fixed a race condition in generic serial bus operation region handler. 273Fixed by Hans de Goede. 274 2752) iASL Compiler/Disassembler and ACPICA tools: 276 277ACPI 6.4: NFIT: add Location Cookie field 278ACPI 6.4: HMAT: add new fields/flags 279ACPI 6.4: Add new flags in SRAT 280ACPI 6.4: add SDEV secure access components 281ACPI 6.4: add Csi2Bus resource template 282ACPI 6.4: add support for PHAT table 283ACPI 6.4: add support for PMTT table 284Add disassembly support for the IVRS table. Compilation of the table is 285not yet complete. 286Fixed a potential infinite loop due to type mismatch. The for-loop is 287using a UINT8 counter and comparing the upper 288limit against a UINT32 AslGbl_ExpectedMessagesIndex maximum. In 289the case where AslGbl_ExpectedMessagesIndex is > 255 the counter i 290will wrap around to zero and the loop will never exit. I suspect 291the AslGbl_ExpectedMessagesIndex is never that high, but fixing 292this does future proof the code and cleans up static analysis 293warnings.Colin King. 294iASL/TableCompiler: update it with IORT table E.b revision changes. From 295shamiali2008. 296iASL/TableCompiler: Add compilation support for the VIOT table. Signed- 297off-by: Jean-Philippe Brucker. 298iASL/TableCompiler: Add compilation support for CEDT table. Also, update 299the CEDT template. 300 301---------------------------------------- 30205 January 2021. Summary of changes for version 20210105: 303 304This release is available at https://acpica.org/downloads 305 306 3071) ACPICA kernel-resident subsystem: 308 309Updated all copyrights to 2021. This affects all ACPICA source code 310modules. 311 3122) iASL Compiler/Disassembler and ACPICA tools: 313 314ASL test suite (ASLTS): Updated all copyrights to 2021. 315 316Tools and utilities: Updated all signon copyrights to 2021. 317 318iASL Table Compiler: Removed support for obsolete ACPI tables: VRTC, 319MTMR. Al Stone. 320 321 322---------------------------------------- 32317 December 2020. Summary of changes for version 20201217: 324 325This release is available at https://acpica.org/downloads 326 327 3281) ACPICA kernel-resident subsystem: 329 330Note: The implementation of ACPI 6.4 is underway, and is expected to be 331mostly finished next month, when ACPI 6.4 is released. 332 333From qzed:- fixed-ae-class-macros. Fix exception code class checks. Added 334several new macros, such as ACPI_CNTL_EXCEPTION(Status) in order to 335enable this. 336 337AcpiExec/iASL/AcpiHelp: Added a few changes for support of GCC 10.2.0. 338These included a few casts, as well as a null pointer check. 339 340Fix -Wfallthrough: GCC 7.1 gained -Wimplicit-fallthrough to warn on 341implicit fallthrough, as well as __attribute__((__fallthrough__)) and 342comments to explicitly denote that cases of fallthrough were intentional. 343Clang also supports this warning and statement attribute, but not the 344comment form. Added a new macro, ACPI_FALLTHROUGH to support this feature 345of GCC. With assistance from @nickdesaulniers. 346 3472) iASL Compiler/Disassembler and ACPICA tools: 348 349Added improvement to method call analysis by saving the return type and 350relaxing certain cases of type checking. 351 352iASL Table Compiler: Improved info messages. Added a message to the -T 353option for when the default template (DSDT) is used. 354Also added a note for when multiple SSDTs are created with a DSDT that 355the SSDTs are created in the same file as the DSDT. 356 357 358---------------------------------------- 359 36013 November 2020. Summary of changes for version 20201113: 361 362This release is available at https://acpica.org/downloads 363 364 3651) ACPICA kernel-resident subsystem: 366 367Interpreter: fixed a memory leak by using use existing buffer in _HID 368repair. There was a memory leak that occurred when a _CID object is 369defined as a package containing string objects. When _CID is checked for 370any possible repairs, it calls a helper function to repair _HID (because 371_CID basically contains multiple _HID entries). The _HID repair function 372assumes that string objects are standalone objects that are not contained 373inside of any packages. The _HID repair function replaced the string 374object with a brand new object and attempted to delete the old object by 375decrementing the reference count of the old object. Strings inside of 376packages have a reference count of 2 so the _HID repair function leaves 377this object in a dangling state and causes a memory leak. Instead of 378allocating a brand new object and removing the old object, use the 379existing object when repairing the _HID object. 380 381Added function trace macros to improve namespace debugging. The namespace 382repair mechanism does not have function tracing macros. Add several trace 383macros to improve debuggability. 384 385Handle "orphan" _REG methods for GPIO OpRegions. Before this change 386AcpiEvExecuteRegMethods() had special handling to handle "orphan" (no 387matching OpRegion declared) _REG methods for EC nodes. On Intel Cherry 388Trail devices there are 2 possible ACPI OpRegions for accessing GPIOs. 389The standard GeneralPurposeIo OpRegion and the Cherry Trail - specific 390UserDefined 0x9X OpRegions. Having 2 different types of OpRegions leads 391to potential issues with checks for OpRegion availability, or in other 392words checks if _REG has been called for the OpRegion which the ACPI code 393wants to use. Except for the "orphan" EC handling, ACPICA core does not 394call _REG on an ACPI node which does not define an OpRegion matching the 395type being registered; and the reference design DSDT, from which most 396Cherry Trail DSDTs are derived, does not define GeneralPurposeIo, nor 397UserDefined(0x93) OpRegions for the GPO2 (UID 3) device, because no pins 398were assigned ACPI controlled functions in the reference design. Together 399this leads to the perfect storm, at least on the Cherry Trail based 400Medion Akayo E1239T. This design does use a GPO2 pin from its ACPI code 401and has added the Cherry Trail specific UserDefined(0x93) opregion to its 402GPO2 ACPI node to access this pin. But it uses a "has _REG been called" 403availability check for the standard GeneralPurposeIo OpRegion. This 404clearly is a bug in the DSDT, but this does work under Windows. This 405issue leads to the intel vbtn driver reporting the device always being in 406tablet-mode at boot, even if it is in laptop mode. Which in turn causes 407userspace to ignore touchpad events. So in other words, this issue causes 408the touchpad to not work at boot. This change fixes this by extending the 409"orphan" _REG method handling to also apply to GPIO address-space 410handlers. 411 412 4132) iASL Compiler/Disassembler and ACPICA tools: 414 415iASL: Added more info to namespace dump file (-ln option). In a separate 416section of the dump file (after the main namespace dump), emit the full 417pathname for each namespace node, its type, and the ASL filename and line 418number where it is declared. 419 420AcpiHelp: Added an option to display/decode iASL exceptions. Option is: - 421x [Hex Value] where "Hex Value" is the iASL exception code. If Hex Value 422is omitted, all iASL exceptions are displayed. 423 424iASL: Use StringLiteral instead of StringData for some ASL macros. The 425use of the stringData rule allows for some "string" oriented opcodes 426(Such as ToString, ToHexString, etc.) None of which make sense with the 427macros in question. This change modifies the StringData part of the rule 428for these macros to a simple string literal - thus disallowing the use 429of ToString, ToHexString, etc. 430The following ASL operators (macros) are affected: 431EisaId 432Fprintf 433Printf 434ToUuid 435Unicode 436Note: The MS compiler requires the use of string literals for these 437operators also. 438 439iASL: Added a remark for an unknown UUID: ASL_MSG_UUID_NOT_FOUND. Search 440the list of "known" UUIDs for the input to the ToUUID macro. 441 442Added 5 new UUIDs to the known UUID table. All related to NVDIMM and the 443NFIT table. 444 445 446---------------------------------------- 447 44825 September 2020. Summary of changes for version 20200925: 449 450This release is available at https://acpica.org/downloads 451 452 4531) ACPICA kernel-resident subsystem: 454 455Preserve memory opregion mappings. The ACPICA's strategy with respect to 456the handling of memory mappings associated with memory operation regions 457is to avoid mapping the entire region at once which may be problematic at 458least in principle (for example, it may lead to conflicts with 459overlapping mappings having different attributes created by drivers). It 460may also be wasteful, because memory opregions on some systems take up 461vastchunks of address space while the fields in those regions actually 462accessed by AML are sparsely distributed. 463 464For this reason, a one-page "window" is mapped for a given opregion on 465the first memory access through it and if that "window" does not cover an 466address range accessed through that opregion subsequently, it is unmapped 467and a new "window" is mapped to replace it. Next, if the new "window" is 468not sufficient to access memory through the opregion in question in the 469future, it will be replaced with yet another "window" and so on. That 470may lead to a suboptimal sequence of memory mapping and unmapping 471operations, for example if two fields in one opregion separated from each 472other by a sufficiently wide chunk of unused address space are accessed 473in an alternating pattern. 474 475Added support for 64 bit risc-v compilation. Useful for acpica tools and 476incorporating ACPICA into the Firmware Test Suite. Colin Ian King 477<colin.king@canonical.com>. 478 479Added support for SMBus predefined names (from SMBus Control Method 480Interface Specification, Version 1.0, December 10, 1999. New predefined 481names: 482 _SBA 483 _SBI 484 _SBR 485 _SBT 486 _SBW 487 488AML Disassembler: Added a new command, "All <NameSeg>". This command will 489evaluate all objects in the current namespace whose NameString contains 490the input NameSeg as the last element of the NameString. Useful for 491debugging. 492 493 4942) iASL Compiler/Disassembler and ACPICA tools: 495 496iASL: fixed a crash that occurred when predefined objects return packages 497with lengths that exceed the initializer list. 498 499iASL: added more detail to external resolution error message when 500compiling multiple definition blocks. 501 502iASL: added a remark for an attempt to create a nameseg or namestring 503containing lower-case letters. This should prevent declaring multiple 504namesegs or namestrings in an attempt to refer to different objects (with 505different cases), but actually refer to the same object(s). 506 507iASL: improve alias analysis by saving object type. If the alias is a 508method type, the parameter count is also recorded. 509 510AcpiExec: Increase the default loop timeout value. Was 1 second, is now 51110 seconds. Prevents unnecessary timeouts when executing control methods 512from the command line. 513 514AcpiHelp/disassembler: Added a bunch of "known" UUIDs to the internal 515list. Includes: 516 Memory Device 517 Generic Buttons Device 518 NVDIMM Root Device 519 Control Method Battery 520 Device Graphs for _DSD method 521 Hierarchical Data Extension 522....ARM CoreSight Graph 523 524---------------------------------------- 525 526 52717 July 2020. Summary of changes for version 20200717: 528 529This release is available at https://acpica.org/downloads 530 531 5321) ACPICA kernel-resident subsystem: 533 534Do not increment OperationRegion reference counts for field units. Recent 535server firmware has revealed that this reference count can overflow on 536large servers that declare many field units (thousands) under the same 537OperationRegion. This occurs because each field unit declaration will add 538a reference count to the source OperationRegion. This release solves the 539reference count overflow for OperationRegion objects by preventing 540fieldUnits from incrementing their parent OperationRegion's reference 541count. 542 543Replaced one-element arrays with flexible-arrays, which were introduced 544in C99. 545 546Restored the readme file containing the directions for generation of 547ACPICA from source on MSVC 2017. Updated the file for MSVC 2017. File is 548located at: generate/msvc2017/readme.txt 549 5502) iASL Compiler/Disassembler and ACPICA tools: 551 552iASL: Fixed a regression found in version 20200214. Prevent iASL from 553emitting an extra byte of garbage data when control methods declared a 554single parameter type without using braces. This extra byte is known to 555cause a blue screen on the Windows AML interpreter. 556 557iASL: Made a change to allow external declarations to specify the type of 558a named object even when some name segments are not defined. 559This change allows the following ASL code to compile (When DEV0 is not 560defined or not defined yet): 561 562 External (\_SB.DEV0.OBJ1, IntObj) 563 External (\_SB.DEV0, DeviceObj) 564 565iASL: Fixed a problem where method names in "Alias ()" statement could be 566misinterpreted. They are now interpreted correctly as method invocations. 567 568iASL: capture a method parameter count (Within the Method info segment, 569as well as the argument node) when using parameter type lists. 570 571---------------------------------------- 572 573 57428 May 2020. Summary of changes for version 20200528: 575 576 5771) ACPICA kernel-resident subsystem: 578 579Removed old/obsolete Visual Studio files which were used to build the 580Windows versions of the ACPICA tools. Since we have moved to Visual 581Studio 2017, we are no longer supporting Visual Studio 2006 and 2009 582project files. The new subdirectory and solution file are located at: 583 584 acpica/generate/msvc2017/AcpiComponents.sln 585 586 5872) iASL Compiler/Disassembler and ACPICA tools: 588 589iASL: added support for a new OperationRegion Address Space (subtype): 590PlatformRtMechanism. Support for this new keyword is being released for 591early prototyping. It will appear in the next release of the ACPI 592specification. 593 594iASL: do not optimize the NameString parameter of the CondRefOf operator. 595In the previous iASL compiler release, the NameString parameter of the 596CondRefOf was optimized. There is evidence that some implementations of 597the AML interpreter do not perform the recursive search-to-parent search 598during the execution of the CondRefOf operator. Therefore, the CondRefOf 599operator behaves differently when the NameString parameter is a single 600name segment (a NameSeg) as opposed to a full NamePath (starting at the 601root scope) or a NameString containing parent prefixes. 602 603iASL: Prevent an inadvertent remark message. This change prevents a 604remark if within a control method the following exist: 6051) An Operation Region is defined, and 6062) A Field operator is defined that refers to the region. 607This happens because at the top level, the Field operator does not 608actually create a new named object, it simply references the operation 609region. 610 611Removed support for the acpinames utility. The acpinames was a simple 612utility used to populate and display the ACPI namespace without executing 613any AML code. However, ACPICA now supports executable opcodes outside of 614control methods. This means that executable AML opcodes such as If and 615Store opcodes need to be executed during table load. Therefore, acpinames 616would need to be updated to match the same behavior as the acpiexec 617utility and since acpiexec can already dump the entire namespace (via the 618'namespace' command), we no longer have the need to maintain acpinames. 619 620 In order to dump the contents of the ACPI namespace using acpiexec, 621execute the following command from the command line: 622 623 acpiexec -b "n" [aml files] 624 625---------------------------------------- 626 627 62830 April 2020. Summary of changes for version 20200430: 629 6301) ACPICA kernel-resident subsystem: 631 632Cleaned up the coding style of a couple of global variables 633(AcpiGbl_NextCmdNum and AcpiProtocolLengths) caught by static analyzers. 634AcpiProtocolLengths was made static, and the definition of 635AcpiGbl_NextCmdNum was moved to acglobal.h. 636 637 6382) iASL Compiler/Disassembler and ACPICA tools: 639 640iASL DataTable Compiler: Fixed a segfault on errors that aren't directly 641associated with a field. 642 643Disassembler: has been made more resilient so that it will continue to 644parse AML even if the AML generates ACPI namespace errors. This enables 645iASL to disassemble some AML that may have been compiled using older 646versions of iASL that no longer compile with newer versions of iASL. 647 648iASL: Fixed the required parameters for _NIH and _NIG. Previously, there 649was a mixup where _NIG required one parameter and _NIH required zero 650parameters. This change swaps these parameter requirements. Now it is 651required that _NIH must be called with one parameter and _NIG requires 652zero parameters. 653 654iASL: Allow use of undefined externals as long as they are protected by 655an if (CondRefOf (...)) block when compiling multiple definition blocks. 656 657iASL: Fixed the type override behavior of named objects that are declared 658as External. External declarations will no longer override the type of 659the actual definition if it already exists. 660 661AcpiNames: Added setargv.obj to the MSVC 2017 link sequence to enable 662command line wildcard support on Windows. Note: the AcpiNames utility is 663essentially redundant with the AcpiExec utility (using the "namespace" 664command) and is therefore deprecated. It will be removed in future 665releases of ACPICA. 666 667Disassembler: ignore AE_ALREADY_EXISTS status when parsing create* 668operators. The disassembler is intended to emit existing ASL code as-is. 669Therefore, error messages emitted during disassembly should be ignored or 670handled in a way such that the disassembler can continue to parse the 671AML. This change ignores AE_ALREADY_EXISTS errors during the deferred Op 672parsing for create operators in order to complete parsing ASL termlists. 673 674iASL DataTable Compiler: IVRS table: fix potentially uninitialized 675variable warning. Some compilers catch potential uninitialized variables. 676This is done by examining branches of if/else statements. This change 677replaces an "else if" with an "else" to fix the uninitialized variable 678warning. 679 680 681---------------------------------------- 68226 March 2020. Summary of changes for version 20200326: 683 684 6851) ACPICA kernel-resident subsystem: 686 687Performed a code clean-up to prevent build errors on early versions of 688GCC-10. 689 690Added the NHLT table signature. iASL data table compiler/disassembler 691support for this table is coming soon. 692 693 6942) iASL Compiler/Disassembler and ACPICA tools: 695 696AcpiExec: Fixed several problems with the namespace initialization file 697(-fi<filename> option). Includes fixes to prevent AE_ALREADY_EXISTS 698errors, several seg faults, and enhancements to line parsing within the 699init file. In addition, each object found in the init file and it's new 700value is displayed, as well as any such entries that do not have a 701corresponding name in the namespace. For reference, the syntax for the 702various supported data types are presented below: 703 PCHG 0x777788889999BBBB // Integer 704 \DEV1.STR1 "XYZ" // String 705 BUF1 (88 99 AA) // Buffer 706 PKG1 [0x1111 0x2222] // Package 707 \BF1 0x7980 // BufferField 708 RCRV 0x0123456789ABCDEF // Field Unit 709 710iASL: Added a custom iASL macro __EXPECT__(iASL-Error-Code). This macro 711can be used anywhere in a given ASL file to configure iASL to expect an 712iASL compiler error code on the line where this macro was placed. If the 713error code does not exist, an error is generated. This is intended to be 714used for ACPICA's ASL test suite, but can be used by ASL developers as 715well. 716 717iASL: table compiler: Implemented IVRS IVHD type 11h parsing. The AMD 718IVRS table parsing supported only IVHD type 10h structures. Parsing an 719IVHD type 11h caused the iasl to report unknown subtable type. Add 720necessary structure definition for IVHD type 11h and apply correct 721parsing method based on subtable type. Micha? ?ygowski. 722 723iASL: table compiler: Fixed IVRS table IVHD type 10h reserved field name 724According to AMD IOMMU Specification Revision 3.05 the reserved field 725should be IOMMU Feature Reporting. Change the name of the field to the 726correct one. Micha? ?ygowski. 727 728acpiexec: removed redeclaration of AcpiGbl_DbOpt_NoRegionSupport. Patch 729based on suggestions by David Seifert and Benjamin Berg. 730 731iASL: table compiler: removed an unused variable (DtCompilerParserResult) 732causing linking errors. Patch based on suggestions by David Seifert and 733Benjamin Berg. 734 735iASL: table compiler: make LexBuffer static to avoid linking errors in 736newer compilers. Patch based on suggestions by David Seifert and Benjamin 737Berg. 738 739iASL: fixed type matching between External and Named objects. External 740object types can only be expressed with ACPI object type values that are 741defined in the ACPI spec. However, iASL uses ACPI object type values that 742are local to ACPICA in addition to the values defined in the ACPI spec. 743This change implements type matching to map some object type values 744specific to ACPICA to ones that are defined in the ACPI spec. 745 746iASL: Dropped the type mismatch compiler error that can arise from 747External declarations to a warning. This warning can occur when there is 748a type difference between the external declaration and the actual object 749declaration (when compiling multiple files/modules simultaneously). 750 751iASL: removed an incorrect error message regarding externals. This change 752removes an incorrect error that is emitted when a duplicate external 753declaration does not contain a type that opens a scope. This is incorrect 754because the duplicate external with conflicting types are already caught 755by iASL and it doesn't make any sense to enforce what this conflicting 756type should be. 757 758AcpiXtract: fix AX_IS_TABLE_BLOCK_HEADER macro. This macro needs to be 759surrounded by parens. Otherwise, a logical statement that applies a 760logical not operator to this macro could result in a computation that 761applies the operator to the left side of the logical and but not the 762right. Reported-by: John Levon <john.levon@joyent.com> 763 764Fixed a problem with the local version of sprint(): On 32-bit, the 765provided sprintf() is non-functional: with a size of ACPI_UINT32_MAX, 766String + Size will wrap, meaning End < Start, and 767AcpiUtBoundStringOutput() will never output anything as a result. The 768symptom seen of this was acpixtract failing to output anything -- with a 769custom build that included utprint.c. Signed-off-by: John Levon 770<john.levon@joyent.com> 771 772iASL: Changed the "PlatformCommChannel" ASL keyword to "PCC", as per the 773ACPI specification. 774 775 776---------------------------------------- 77714 February 2020. Summary of changes for version 20200214: 778 779 7801) ACPICA kernel-resident subsystem: 781 782Enable sleep button on ACPI legacy wake: Hibernation (S4) is triggered 783in a guest when it receives a sleep trigger from the hypervisor. When the 784guest resumes from this power state, it does not see the SleepEnabled 785bit. In other words, the sleepHibernation (S4) is triggered in a guest 786when it receives a sleep trigger from the hypervisor. When the guest 787resumes from this power state, it does not see the SleepEnabled bit. In 788other words, the sleep button is not enabled on waking from an S4 state. 789This causes subsequent invocation of sleep state to fail since the 790guest.button is not enabled on waking from an S4 state. This causes 791subsequent invocation of sleep state to fail in the guest. Fix this 792problem by enabling the sleep button in ACPI legacy wake. From Anchal 793Agarwal <anchalag@amazon.com>. 794 795Implemented a new external interface, AcpiAnyGpeStatusSet (). To be used 796for checking the status bits of all enabled GPEs in one go. It is needed 797to distinguish spurious SCIs from genuine ones when deciding whether or 798not to wake up the system from suspend-to-idle. 799 800Generic Makefiles: replace HOST name with ACPI_HOST: Some machines may be 801using HOST in their environment to represent the host name for their 802machines. Avoid this problem by renaming this variable from HOST to 803ACPI_HOST. 804 805MSVC 2017 project files: Enable multiprocessor generation to improve 806build performance. 807 808Added a macro to get the byte width of a Generic Address structure. New 809ACPI_ACCESS_BYTE_WIDTH is in addition to the existing 810ACPI_ACCESS_BIT_WIDTH. From Mika Westerberg. 811 812 8132) iASL Compiler/Disassembler and ACPICA tools: 814 815iASL: Implemented full support for the (optional, rarely used) ReturnType 816and ParameterTypesList for the Method, Function, and External operators. 817For Method declarations, the number of individual ParameterTypes must 818match the declaration of the number of arguments (NumArgs). This also 819Fixes a problem with the External operator where extra/extraneous bytes 820were emitted in the AML code if the optional ReturnType/ParameterTypes 821were specified for a MethodObj declaration. 822New error message: 8231) Method NumArgs count does not match length of ParameterTypes list 824 825iASL: Implemented detection of type mismatches between External 826declarations and named object declarations. Also, detect type mismatches 827between multiple External declarations of the same Name. 828New error messages: 8291) Type mismatch between external declaration and actual object 830declaration detected 8312) Type mismatch between multiple external declarations detected 832 833iASL: Implemented new error messages for External operators that specify 834a ReturnType and/or ParameterTypesList for any object type other than 835control methods (MethodObj). 836New error messages: 8371) Return type is only allowed for Externals declared as MethodObj 8382) Parameter type is only allowed for Externals declared as MethodObj 839 840iASL: Implemented two new remark/warning messages for ASL code that 841creates named objects from within a control method. This is very 842inefficient since the named object must be created and deleted each time 843the method is executed. 844New messages: 8451) Creation of named objects within a method is highly inefficient, use 846globals or method local variables instead (remark) 8472) Static OperationRegion should be declared outside control method 848(warning) 849 850iASL: Improved illegal forward reference detection by adding support to 851detect forward-reference method invocations. 852 853iASL: Detect and issue an error message for NameStrings that contain too 854many individual NameSegs (>255). This is an AML limitation that is 855defined in the ACPI specification. 856New message: 8571) NameString contains too many NameSegs (>255) 858 859acpidump: windows: use GetSystemFirmwareTable API for all tables except 860SSDT. By using this API, acpidump is able to get all tables in the XSDT 861 862iASL: Removed unused parser file and updated msvc2017 project files. 863Removed the obsolete AslCompiler.y from the repository. 864 865iASL: msvc2017: Fixed macros in the file dependency list to prevent 866unnecessary rebuilds. Replace %(Directory) with %(RelativeDir). 867 868Disassembler: Prevent spilling error messages to the output file. All 869errors are directed to the console instead. These error messages 870prevented re-compilation of the resulting disassembled ASL output file 871(.DSL). 872 873 874---------------------------------------- 87510 January 2020. Summary of changes for version 20200110: 876 877 8781) ACPICA kernel-resident subsystem: 879 880Updated all copyrights to 2020. This affects all ACPICA source code 881modules. 882 883 8842) iASL Compiler/Disassembler and ACPICA tools: 885 886ASL test suite (ASLTS): Updated all copyrights to 2020. 887 888Tools and utilities: Updated all signon copyrights to 2020. 889 890iASL: fix forward reference analysis for field declarations. Fixes 891forward reference analysis for field declarations by searching the 892parent scope for the named object when the object is not present in 893the current scope. 894 895iASL: Improved the error output for ALREADY_EXISTS errors. Now, the 896full pathname of the name that already exists is printed. 897 898iASL: Enhance duplicate Case() detection for buffers. Add check for 899buffers with no initializer list (these buffers will be filled with 900zeros at runtime.) 901 902 903---------------------------------------- 90413 December 2019. Summary of changes for version 20191213: 905 906 9071) ACPICA kernel-resident subsystem: 908 909Return a Buffer object for all fields created via the CreateField 910operator. Previously, an Integer would be returned if the size of 911the field was less than or equal to the current size of an Integer. 912Although this goes against the ACPI specification, it provides 913compatibility with other ACPI implementations. Also updated the 914ASLTS test suite to reflect this new behavior. 915 9162) iASL Compiler/Disassembler and ACPICA tools: 917 918iASL: Implemented detection of (and throw an error for) duplicate 919values for Case statements within a single Switch statement. Duplicate 920Integers, Strings, and Buffers are supported. 921 922iASL: Fix error logging issue during multiple file compilation -- 923Switch to the correct input file during error node creation. 924 925iASL: For duplicate named object creation, now emit an error instead 926of a warning - since this will cause a runtime error. 927 928AcpiSrc: Add unix line-ending support for non-Windows builds. 929 930iASL: Add an error condition for an attempt to create a NameString 931with > 255 NameSegs (the max allowable via the AML definition). 932 933 934---------------------------------------- 93518 October 2019. Summary of changes for version 20191018: 936 937 9381) ACPICA kernel-resident subsystem: 939 940Debugger: added a new command: ?Fields [address space ID]?. This command 941dumps the contents of all field units that are defined within the 942namespace with a particular address space ID. 943 944Modified the external interface AcpiLoadTable() to return a table index. 945This table index can be used for unloading a table for debugging. 946 ACPI_STATUS 947 AcpiLoadTable ( 948 ACPI_TABLE_HEADER *Table, 949 UINT32 *TableIndex)) 950 951Implemented a new external interface: AcpiUnloadTable() This new function 952takes a table index as an argument and unloads the table. Useful for 953debugging only. 954 ACPI_STATUS 955 AcpiUnloadTable ( 956 UINT32 TableIndex)) 957 958Ported the AcpiNames utility to use the new table initialization 959sequence. The utility was broken before this change. Also, it was 960required to include most of the AML interpreter into the utility in order 961to process table initialization (module-level code execution.) 962 963Update for results from running Clang V8.0.1. This fixes all "dead 964assignment" warnings. There are still several "Dereference of NULL 965pointer" warnings, but these have been found to be false positive 966warnings. 967 968 9692) iASL Compiler/Disassembler and ACPICA tools: 970 971iASL: numerous table compiler changes to ensure that the usage of 972yacc/bison syntax is POSIX-compliant. 973 974iASL/disassembler: several simple bug fixes in the data table 975disassembler. 976 977Acpiexec: expanded the initialization file (the -fi option) to initialize 978strings, buffers, packages, and field units. 979 980 981---------------------------------------- 98216 August 2019. Summary of changes for version 20190816: 983 984This release is available at https://acpica.org/downloads 985 986 9871) ACPICA kernel-resident subsystem: 988 989Modified the OwnerId mechanism to allow for more Owner Ids. The previous 990limit was 256 Ids, now it is 4096 Ids. This prevents OWNER_ID_LIMIT 991exceptions on machines with a large number of initialization threads, 992many CPU cores and nested initialization control methods. 993 994Introduced acpi_dispatch_gpe() as a wrapper around AcpiEvDetectGpe() for 995checking if the given GPE (as represented by a GPE device handle and a 996GPE number) is currently active and dispatching it (if that's the case) 997outside of interrupt context. 998 999Table load: exit the interpreter before initializing objects within the 1000new table This prevents re-acquiring the interpreter lock when loading 1001tables 1002 1003Added the "Windows 2019" string to the _OSI support (version 1903). Jung- 1004uk Kim 1005 1006Macros: removed pointer math on a null pointer. Causes warnings on some 1007compilers and/or tools. Changed ACPI_TO_POINTER to use ACPI_CAST_PTR 1008instead of using arithmetic. 1009 1010Fully deployed the ACPI_PRINTF_LIKE macro. This macro was not being used 1011across all "printf-like" internal functions. Also, cleanup all calls to 1012such functions (both in 32-bit mode and 64-bit mode) now that they are 1013analyzed by the gcc compiler via ACPI_PRINTF_LIKE. 1014 1015 10162) iASL Compiler/Disassembler and ACPICA tools: 1017 1018iASL: implemented a new data table compiler flex/bison front-end. This 1019change is internal and is not intended to result in changes to the 1020compiled code. This new compiler front-end can be invoked using the -tp 1021option for now, until the old mechanism is removed. 1022 1023ASLTS: Implemented a new data table compiler test suite. This test suite 1024generates all table templates and compile/disassemble/re-compile/binary- 1025compare each file. 1026 1027iASL: return -1 if AML files were not generated due to compiler errors 1028 1029iASL: added a warning on use of the now-legacy ASL Processor () keyword. 1030 1031iASL: added an error on _UID object declaration that returns a String 1032within a Processor () declaration. A _UID for a processor must be an 1033Integer. 1034 1035iASL: added a null terminator to name strings that consist only of 1036multiple parent prefixes (^) 1037 1038iASL: added support to compile both ASL and data table files in a single 1039command. 1040 1041Updated the tool generation project files that were recently migrated to 1042MSVC 2017 to eliminate all new warnings. The new project files appear in 1043the directory \acpica\generate\msvc2017. This change effectively 1044deprecates the older project files in \acpica\generate\msvc9. 1045 1046 1047---------------------------------------- 104803 July 2019. Summary of changes for version 20190703: 1049 1050 10511) ACPICA kernel-resident subsystem: 1052 1053Remove legacy module-level support code. There were still some remnants 1054of the legacy module-level code executions. Since we no longer support 1055this option, this is essentially dead code and has been removed from the 1056ACPICA source. 1057 1058iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 1059scope. If these named objects are declared outside the root scope, they 1060will not be invoked by any host Operating System. 1061 1062Clear status of GPEs on first direct enable. ACPI GPEs (other than the EC 1063one) can be enabled in two situations. First, the GPEs with existing _Lxx 1064and _Exx methods are enabled implicitly by ACPICA during system 1065initialization. Second, the GPEs without these methods (like GPEs listed 1066by _PRW objects for wakeup devices) need to be enabled directly by the 1067code that is going to use them (e.g. ACPI power management or device 1068drivers). 1069 1070In the former case, if the status of a given GPE is set to start with, 1071its handler method (either _Lxx or _Exx) needs to be invoked to take care 1072of the events (possibly) signaled before the GPE was enabled. In the 1073latter case, however, the first caller of AcpiEnableGpe() for a given GPE 1074should not be expected to care about any events that might be signaled 1075through it earlier. In that case, it is better to clear the status of 1076the GPE before enabling it, to prevent stale events from triggering 1077unwanted actions (like spurious system resume, for example). 1078 1079For this reason, modify AcpiEvAddGpeReference() to take an additional 1080boolean argument indicating whether or not the GPE status needs to be 1081cleared when its reference counter changes from zero to one and make 1082AcpiEnableGpe() pass TRUE to it through that new argument. 1083 1084 10852) iASL Compiler/Disassembler and ACPICA tools: 1086 1087The tool generation process has been migrated to MSVC 2017, and all 1088project files have been upgraded. The new project files appear in the 1089directory \acpica\generate\msvc2017. This change effectively deprecates 1090the older project files in \acpica\generate\msvc9. 1091 1092iASL: ensure that _WAK, _PTS, _TTS, and _Sx are declared only at the root 1093scope. If these named objects are declared outside the root scope, they 1094will not be invoked by any host Operating System 1095 1096---------------------------------------- 109709 May 2019. Summary of changes for version 20190509: 1098 1099 11001) ACPICA kernel-resident subsystem: 1101 1102Revert commit 6c43e1a ("ACPICA: Clear status of GPEs before enabling 1103them") that causes problems with Thunderbolt controllers to occur if a 1104dock device is connected at init time (the xhci_hcd and thunderbolt 1105modules crash which prevents peripherals connected through them from 1106working). Commit 6c43e1a effectively causes commit ecc1165b8b74 ("ACPICA: 1107Dispatch active GPEs at init time") to get undone, so the problem 1108addressed by commit ecc1165b8b74 appears again as a result of it. 1109 1110 11112) iASL Compiler/Disassembler and ACPICA tools: 1112 1113Reverted iASL: Additional forward reference detection. This change 1114reverts forward reference detection for field declarations. The feature 1115unintentionally emitted AML bytecode with incorrect package lengths for 1116some ASL code related to Fields and OperationRegions. This malformed AML 1117can cause systems to crash 1118during boot. The malformed AML bytecode is emitted in iASL version 111920190329 and 20190405. 1120 1121iASL: improve forward reference detection. This change improves forward 1122reference detection for named objects inside of scopes. If a parse object 1123has the OP_NOT_FOUND_DURING_LOAD set, it means that Op is a reference to 1124a named object that is declared later in the AML bytecode. This is 1125allowed if the reference is inside of a method and the declaration is 1126outside of a method like so: 1127 1128DefinitionBlock(...) 1129{ 1130 Method (TEST) 1131 { 1132 Return (NUM0) 1133 } 1134 Name (NUM0,0) 1135} 1136 1137However, if the declaration and reference are both in the same method or 1138outside any methods, this is a forward reference and should be marked as 1139an error because it would result in runtime errors. 1140 1141DefinitionBlock(...) 1142{ 1143 Name (BUFF, Buffer (NUM0) {}) // Forward reference 1144 Name (NUM0, 0x0) 1145 1146 Method (TEST) 1147 { 1148 Local0 = NUM1 1149 Name (NUM1, 0x1) // Forward reference 1150 return (Local0) 1151 } 1152} 1153 1154iASL: Implemented additional buffer overflow analysis for BufferField 1155declarations. Check if a buffer index argument to a create buffer field 1156operation is beyond the end of the target buffer. 1157 1158This affects these AML operators: 1159 1160 AML_CREATE_FIELD_OP 1161 AML_CREATE_BIT_FIELD_OP 1162 AML_CREATE_BYTE_FIELD_OP 1163 AML_CREATE_WORD_FIELD_OP 1164 AML_CREATE_DWORD_FIELD_OP 1165 AML_CREATE_QWORD_FIELD_OP 1166 1167 There are three conditions that must be satisfied in order to allow this 1168validation at compile time: 1169 1170 1) The length of the target buffer must be an integer constant 1171 2) The index specified in the create* must be an integer constant 1172 3) For CreateField, the bit length argument must be non-zero. 1173 1174Example: 1175 Name (BUF1, Buffer() {1,2}) 1176 CreateField (BUF1, 7, 9, CF03) // 3: ERR 1177 1178dsdt.asl 14: CreateField (BUF1, 7, 9, CF03) // 3: ERR 1179Error 6165 - ^ Buffer index beyond end of 1180target buffer 1181 1182 1183---------------------------------------- 118405 April 2019. Summary of changes for version 20190405: 1185 1186 11871) ACPICA kernel-resident subsystem: 1188 1189Event Manager: History: Commit 18996f2db918 ("ACPICA: Events: Stop 1190unconditionally clearing ACPI IRQs during suspend/resume") was added 1191earlier to stop clearing of event status bits unconditionally on suspend 1192and resume paths. Though this change fixed an issue on suspend path, it 1193introduced regressions on several resume paths. In the case of S0ix, 1194events are enabled as part of device suspend path. If status bits for the 1195events are set when they are enabled, it could result in premature wake 1196from S0ix. If status is cleared for any event that is being enabled so 1197that any stale events are cleared out. In case of S0ix, events are 1198enabled as part of device suspend path. If status bits for the events are 1199set when they are enabled, it could result in premature wake from S0ix. 1200 1201This change ensures that status is cleared for any event that is being 1202enabled so that any stale events are cleared out. 1203 1204 12052) iASL Compiler/Disassembler and ACPICA tools: 1206 1207iASL: Implemented an enhanced multiple file compilation that combines 1208named objects from all input files to a single namespace. With this 1209feature, any unresolved external declarations as well as duplicate named 1210object declarations can be detected during compilation rather than 1211generating errors much later at runtime. The following commands are 1212examples that utilize this feature: 1213 iasl dsdt.asl ssdt.asl 1214 iasl dsdt.asl ssdt1.asl ssdt2.asl 1215 iasl dsdt.asl ssdt*.asl 1216 1217---------------------------------------- 121829 March 2019. Summary of changes for version 20190329: 1219 1220 12211) ACPICA kernel-resident subsystem: 1222 1223Namespace support: Remove the address nodes from global list after method 1224termination. The global address list contains pointers to namespace nodes 1225that represent Operation Regions. This change properly removes Operation 1226Region namespace nodes that are declared dynamically during method 1227execution. 1228 1229Linux: Use a different debug default than ACPICA. There was a divergence 1230between Linux and the ACPICA codebases. In order to resolve this 1231divergence, Linux now declares its own debug default in aclinux.h 1232 1233Renamed some internal macros to improve code understanding and 1234maintenance. The macros below all operate on single 4-character ACPI 1235NameSegs, not generic strings (old -> new): 1236 ACPI_NAME_SIZE -> ACPI_NAMESEG_SIZE 1237 ACPI_COMPARE_NAME -> ACPI_COMPARE_NAMESEG 1238 ACPI_MOVE_NAME -> ACPI_COPY_NAMESEG 1239 1240Fix for missing comma in array declaration for the AcpiGbl_GenericNotify 1241table. 1242 1243Test suite: Update makefiles, add PCC operation region support 1244 1245 12462) iASL Compiler/Disassembler and Tools: 1247 1248iASL: Implemented additional illegal forward reference detection. Now 1249detect and emit an error upon detection of a forward reference from a 1250Field to an Operation Region. This will fail at runtime if allowed to 1251pass the compiler. 1252 1253AcpiExec: Add an address list check for dynamic Operation Regions. This 1254feature performs a sanity test for each node the global address list. 1255This is done in order to ensure that all dynamic operation regions are 1256properly removed from the global address list and no dangling pointers 1257are left behind. 1258 1259Disassembler: Improved generation of resource pathnames. This change 1260improves the code that generates resource descriptor and resource tag 1261pathnames. The original code used a bunch of str* C library functions 1262that caused warnings on some compilers. 1263 1264iASL: Removed some uses of strncpy and replaced with memmove. The strncpy 1265function can overwrite buffers if the calling code is not very careful. 1266In the case of generating a module/table header, use of memmove is a 1267better implementation. 1268 1269 12703) Status of new features that have not been completed at this time: 1271 1272iASL: Implementing an enhanced multiple file compilation into a single 1273namespace feature (Status): This feature will be released soon, and 1274allows multiple ASL files to be compiled into the same single namespace. 1275By doing so, any unresolved external declarations as well as duplicate 1276named object declarations can be detected during compilation (rather than 1277later during runtime). The following commands are examples that utilize 1278this feature: 1279 iasl dsdt.asl ssdt.asl 1280 iasl dsdt.asl ssdt1.asl ssdt2.asl 1281 iasl dsdt.asl ssdt*.asl 1282 1283ASL tutorial status: Feedback is being gathered internally and the 1284current plan is to publish this tutorial on the ACPICA website after a 1285final review by a tech writer. 1286 1287---------------------------------------- 128815 February 2019. Summary of changes for version 20190215: 1289 1290 12910) Support for ACPI specification version 6.3: 1292 1293Add PCC operation region support for the AML interpreter. This adds PCC 1294operation region support in the AML interpreter and a default handler for 1295acpiexec. The change also renames the PCC region address space keyword to 1296PlatformCommChannel. 1297 1298Support for new predefined methods _NBS, _NCH, _NIC, _NIH, and _NIG. 1299These methods provide OSPM with health information and device boot 1300status. 1301 1302PDTT: Add TriggerOrder to the PCC Identifier structure. The field value 1303defines if the trigger needs to be invoked by OSPM before or at the end 1304of kernel crash dump processing/handling operation. 1305 1306SRAT: Add Generic Affinity Structure subtable. This subtable in the SRAT 1307is used for describing devices such as heterogeneous processors, 1308accelerators, GPUs, and IO devices with integrated compute or DMA 1309engines. 1310 1311MADT: Add support for statistical profiling in GICC. Statistical 1312profiling extension (SPE) is an architecture-specific feature for ARM. 1313 1314MADT: Add online capable flag. If this bit is set, system hardware 1315supports enabling this processor during OS runtime. 1316 1317New Error Disconnect Recover Notification value. There are a number of 1318scenarios where system Firmware in collaboration with hardware may 1319disconnect one or more devices from the rest of the system for purposes 1320of error containment. Firmware can use this new notification value to 1321alert OSPM of such a removal. 1322 1323PPTT: New additional fields in Processor Structure Flags. These flags 1324provide more information about processor topology. 1325 1326NFIT/Disassembler: Change a field name from "Address Range" to "Region 1327Type". 1328 1329HMAT updates: make several existing fields to be reserved as well as 1330rename subtable 0 to "memory proximity domain attributes". 1331 1332GTDT: Add support for new GTDT Revision 3. This revision adds information 1333for the EL2 timer. 1334 1335iASL: Update the HMAT example template for new fields. 1336 1337iASL: Add support for the new revision of the GTDT (Rev 3). 1338 1339 13401) ACPICA kernel-resident subsystem: 1341 1342AML Parser: fix the main AML parse loop to correctly skip erroneous 1343extended opcodes. AML opcodes come in two lengths: 1-byte opcodes and 2- 1344byte extended opcodes. If an error occurs during an AML table load, the 1345AML parser will continue loading the table by skipping the offending 1346opcode. This implements a "load table at any cost" philosophy. 1347 1348 13492) iASL Compiler/Disassembler and Tools: 1350 1351iASL: Add checks for illegal object references, such as a reference 1352outside of method to an object within a method. Such an object is only 1353temporary. 1354 1355iASL: Emit error for creation of a zero-length operation region. Such a 1356region is rather pointless. If encountered, a runtime error is also 1357implemented in the interpreter. 1358 1359Debugger: Fix a possible fault with the "test objects" command. 1360 1361iASL: Makefile: support parent directory filenames containing embedded 1362spaces. 1363 1364iASL: Update the TPM2 template to revision 4. 1365 1366iASL: Add the ability to report specific warnings or remarks as errors. 1367 1368Disassembler: Disassemble OEMx tables as actual AML byte code. 1369Previously, these tables were treated as "unknown table". 1370 1371iASL: Add definition and disassembly for TPM2 revision 3. 1372 1373iASL: Add support for TPM2 rev 3 compilation. 1374 1375 1376---------------------------------------- 137708 January 2019. Summary of changes for version 20190108: 1378 1379 13801) ACPICA kernel-resident subsystem: 1381 1382Updated all copyrights to 2019. This affects all source code modules. 1383 1384 13852) iASL Compiler/Disassembler and Tools: 1386 1387ASL test suite (ASLTS): Updated all copyrights to 2019. 1388 1389Tools: Updated all signon copyrights to 2019. 1390 1391AcpiExec: Added a new option to dump extra information concerning any 1392memory leaks detected by the internal object/cache tracking mechanism. - 1393va 1394 1395iASL: Updated the table template for the TPM2 table to the newest version 1396of the table (Revision 4) 1397 1398 1399---------------------------------------- 140013 December 2018. Summary of changes for version 20181213: 1401 1402 14031) ACPICA Kernel-resident Subsystem: 1404 1405Fixed some buffer length issues with the GenericSerialBus, related to two 1406of the bidirectional protocols: AttribRawProcessBytes and AttribRawBytes, 1407which are rarely seen in the field. For these, the LEN field of the ASL 1408buffer is now ignored. Hans de Goede 1409 1410Implemented a new object evaluation trace mechanism for control methods 1411and data objects. This includes nested control methods. It is 1412particularly useful for examining the ACPI execution during system 1413initialization since the output is relatively terse. The flag below 1414enables the output of the trace via the ACPI_DEBUG_PRINT_RAW interface: 1415 #define ACPI_LV_EVALUATION 0x00080000 1416 1417Examples: 1418 Enter evaluation : _SB.PCI0._INI (Method) 1419 Exit evaluation : _SB.PCI0._INI 1420 Enter evaluation : _OSI (Method) 1421 Exit evaluation : _OSI 1422 Enter evaluation : _SB.PCI0.TEST (Method) 1423 Nested method call : _SB.PCI0.NST1 1424 Exit nested method : _SB.PCI0.NST1 1425 Exit evaluation : _SB.PCI0.TEST 1426 1427Added two recently-defined _OSI strings. See 1428https://docs.microsoft.com/en-us/windows-hardware/drivers/acpi/winacpi- 1429osi. 1430 "Windows 2018" 1431 "Windows 2018.2" 1432 1433Update for buffer-to-string conversions via the ToHexString ASL operator. 1434A "0x" is now prepended to each of the hex values in the output string. 1435This provides compatibility with other ACPI implementations. The ACPI 1436specification is somewhat vague on this issue. 1437 Example output string after conversion: 1438"0x01,0x02,0x03,0x04,0x05,0x06" 1439 1440Return a run-time error for TermArg expressions within individual package 1441elements. Although this is technically supported by the ASL grammar, 1442other ACPI implementations do not support this either. Also, this fixes a 1443fault if this type of construct is ever encountered (it never has been). 1444 1445 14462) iASL Compiler/Disassembler and Tools: 1447 1448iASL: Implemented a new compile option (-ww) that will promote individual 1449warnings and remarks to errors. This is intended to enhance the firmware 1450build process. 1451 1452AcpiExec: Implemented a new command-line option (-eo) to support the new 1453object evaluation trace mechanism described above. 1454 1455Disassembler: Added support to disassemble OEMx tables as AML/ASL tables 1456instead of a "unknown table" message. 1457 1458AcpiHelp: Improved support for the "special" predefined names such as 1459_Lxx, _Exx, _EJx, _T_x, etc. For these, any legal hex value can now be 1460used for "xx" and "x". 1461 1462---------------------------------------- 146331 October 2018. Summary of changes for version 20181031: 1464 1465 1466An Operation Region regression was fixed by properly adding address 1467ranges to a global list during initialization. This allows OS to 1468accurately check for overlapping regions between native devices (such as 1469PCI) and Operation regions as well as checking for region conflicts 1470between two Operation Regions. 1471 1472Added support for the 2-byte extended opcodes in the code/feature that 1473attempts to continue parsing during the table load phase. Skip parsing 1474Device declarations (and other extended opcodes) when an error occurs 1475during parsing. Previously, only single-byte opcodes were supported. 1476 1477Cleanup: Simplified the module-level code support by eliminating a 1478useless global variable (AcpiGbl_GroupModuleLeveCode). 1479 1480 14812) iASL Compiler/Disassembler and Tools: 1482 1483iASL/Preprocessor: Fixed a regression where an incorrect use of ACPI_FREE 1484could cause a fault in the preprocessor. This was an inadvertent side- 1485effect from moving more allocations/frees to the local cache/memory 1486mechanism. 1487 1488iASL: Enhanced error detection by validating that all NameSeg elements 1489within a NamePatch actually exist. The previous behavior was spotty at 1490best, and such errors could be improperly ignored at compiler time (never 1491at runtime, however. There are two new error messages, as shown in the 1492examples below: 1493 1494dsdt.asl 33: CreateByteField (TTTT.BXXX, 1, CBF1) 1495Error 6161 - ^ One or more objects within 1496the Pathname do not exist (TTTT.BXXX) 1497 1498dsdt.asl 34: CreateByteField (BUF1, UUUU.INT1, BBBB.CBF1) 1499Error 6160 - One or more prefix Scopes do not exist ^ 1500(BBBB.CBF1) 1501 1502iASL: Disassembler/table-compiler: Added support for the static data 1503table TPM2 revision 3 (an older version of TPM2). The support has been 1504added for the compiler and the disassembler. 1505 1506Fixed compilation of DOS format data table file on Unix/Linux systems. 1507iASL now properly detects line continuations (\) for DOS format data 1508table definition language files on when executing on Unix/Linux. 1509 1510---------------------------------------- 151103 October 2018. Summary of changes for version 20181003: 1512 1513 15142) iASL Compiler/Disassembler and Tools: 1515 1516Fixed a regression introduced in version 20180927 that could cause the 1517compiler to fault, especially with NamePaths containing one or more 1518carats (^). Such as: ^^_SB_PCI0 1519 1520Added a new remark for the Sleep() operator when the sleep time operand 1521is larger than one second. This is a very long time for the ASL/BIOS code 1522and may not be what was intended by the ASL writer. 1523 1524---------------------------------------- 152527 September 2018. Summary of changes for version 20180927: 1526 1527 15281) ACPICA kernel-resident subsystem: 1529 1530Updated the GPE support to clear the status of all ACPI events when 1531entering any/all sleep states in order to avoid premature wakeups. In 1532theory, this may cause some wakeup events to be missed, but the 1533likelihood of this is small. This change restores the original behavior 1534of the ACPICA code in order to fix a regression seen from the previous 1535"Stop unconditionally clearing ACPI IRQs during suspend/resume" change. 1536This regression could cause some systems to incorrectly wake immediately. 1537 1538Updated the execution of the _REG methods during initialization and 1539namespace loading to bring the behavior into closer conformance to the 1540ACPI specification and other ACPI implementations: 1541 1542From the ACPI specification 6.2A, section 6.5.4 "_REG (Region): 1543 "Control methods must assume all operation regions are inaccessible 1544until the _REG(RegionSpace, 1) method is executed" 1545 1546 "The exceptions to this rule are: 15471. OSPM must guarantee that the following operation regions are always 1548accessible: 1549 SystemIO operation regions. 1550 SystemMemory operation regions when accessing memory returned by the 1551System Address Map reporting interfaces." 1552 1553Since the state of both the SystemIO and SystemMemory address spaces are 1554defined by the specification to never change, this ACPICA change ensures 1555that now _REG is never called on them. This solves some problems seen in 1556the field and provides compatibility with other ACPI implementations. An 1557update to the upcoming new version of the ACPI specification will help 1558clarify this behavior. 1559 1560Updated the implementation of support for the Generic Serial Bus. For the 1561"bidirectional" protocols, the internal implementation now automatically 1562creates a return data buffer of the maximum size (255). This handles the 1563worst-case for data that is returned from the serial bus handler, and 1564fixes some problems seen in the field. This new buffer is directly 1565returned to the ASL. As such, there is no true "bidirectional" buffer, 1566which matches the ACPI specification. This is the reason for the "double 1567store" seen in the example ASL code in the specification, shown below: 1568 1569Word Process Call (AttribProcessCall): 1570 OperationRegion(TOP1, GenericSerialBus, 0x00, 0x100) 1571 Field(TOP1, BufferAcc, NoLock, Preserve) 1572 { 1573 FLD1, 8, // Virtual register at command value 1. 1574 } 1575 1576 Name(BUFF, Buffer(20){}) // Create GenericSerialBus data buffer 1577 // as BUFF 1578 CreateWordField(BUFF, 0x02, DATA) // DATA = Data (Word) 1579 1580 Store(0x5416, DATA) // Save 0x5416 into the data buffer 1581 Store(Store(BUFF, FLD1), BUFF) // Invoke a write/read Process Call 1582transaction 1583 // This is the "double store". The write to 1584 // FLD1 returns a new buffer, which is stored 1585 // back into BUFF with the second Store. 1586 1587 15882) iASL Compiler/Disassembler and Tools: 1589 1590iASL: Implemented detection of extraneous/redundant uses of the Offset() 1591operator within a Field Unit list. A remark is now issued for these. For 1592example, the first two of the Offset() operators below are extraneous. 1593Because both the compiler and the interpreter track the offsets 1594automatically, these Offsets simply refer to the current offset and are 1595unnecessary. Note, when optimization is enabled, the iASL compiler will 1596in fact remove the redundant Offset operators and will not emit any AML 1597code for them. 1598 1599 OperationRegion (OPR1, SystemMemory, 0x100, 0x100) 1600 Field (OPR1) 1601 { 1602 Offset (0), // Never needed 1603 FLD1, 32, 1604 Offset (4), // Redundant, offset is already 4 (bytes) 1605 FLD2, 8, 1606 Offset (64), // OK use of Offset. 1607 FLD3, 16, 1608 } 1609dsdt.asl 14: Offset (0), 1610Remark 2158 - ^ Unnecessary/redundant use of Offset 1611operator 1612 1613dsdt.asl 16: Offset (4), 1614Remark 2158 - ^ Unnecessary/redundant use of Offset 1615operator 1616 1617---------------------------------------- 161810 August 2018. Summary of changes for version 20180810: 1619 1620 16211) ACPICA kernel-resident subsystem: 1622 1623Initial ACPI table loading: Attempt to continue loading ACPI tables 1624regardless of malformed AML. Since migrating table initialization to the 1625new module-level code support, the AML interpreter rejected tables upon 1626any ACPI error encountered during table load. This is a problem because 1627non-serious ACPI errors during table load do not necessarily mean that 1628the entire definition block (DSDT or SSDT) is invalid. This change 1629improves the table loading by ignoring some types of errors that can be 1630generated by incorrect AML. This can range from object type errors, scope 1631errors, and index errors. 1632 1633Suspend/Resume support: Update to stop unconditionally clearing ACPI IRQs 1634during suspend/resume. The status of ACPI events is no longer cleared 1635when entering the ACPI S5 system state (power off) which caused some 1636systems to power up immediately after turning off power in certain 1637situations. This was a functional regression. It was fixed by clearing 1638the status of all ACPI events again when entering S5 (for system-wide 1639suspend or hibernation the clearing of the status of all events is not 1640desirable, as it might cause the kernel to miss wakeup events sometimes). 1641Rafael Wysocki. 1642 1643 16442) iASL Compiler/Disassembler and Tools: 1645 1646AcpiExec: Enhanced the -fi option (Namespace initialization file). Field 1647elements listed in the initialization file were previously initialized 1648after the table load and before executing module-level code blocks. 1649Recent changes in the module-level code support means that the table load 1650becomes a large control method execution. If fields are used within 1651module-level code and we are executing with the -fi option, the 1652initialization values were used to initialize the namespace object(s) 1653only after the table was finished loading. This change Provides an early 1654initialization of objects specified in the initialization file so that 1655field unit values are populated during the table load (not after the 1656load). 1657 1658AcpiExec: Fixed a small memory leak regression that could result in 1659warnings during exit of the utility. These warnings were similar to 1660these: 1661 0002D690 Length 0x0006 nsnames-0502 [Not a Descriptor - too small] 1662 0002CD70 Length 0x002C utcache-0453 [Operand] Integer RefCount 0x0001 1663 1664---------------------------------------- 166529 June 2018. Summary of changes for version 20180629: 1666 1667 16681) iASL Compiler/Disassembler and Tools: 1669 1670iASL: Fixed a regression related to the use of the ASL External 1671statement. Error checking for the use of the External() statement has 1672been relaxed. Previously, a restriction on the use of External meant that 1673the referenced named object was required to be defined in a different 1674table (an SSDT). Thus it would be an error to declare an object as an 1675external and then define the same named object in the same table. For 1676example: 1677 DefinitionBlock (...) 1678 { 1679 External (DEV1) 1680 Device (DEV1){...} // This was an error 1681 } 1682However, this behavior has caused regressions in some existing ASL code, 1683because there is code that depends on named objects and externals (with 1684the same name) being declared in the same table. This change will allow 1685the ASL code above to compile without errors or warnings. 1686 1687iASL: Implemented ASL language extensions for four operators to make some 1688of their arguments optional instead of required: 1689 1) Field (RegionName, AccessType, LockRule, UpdateRule) 1690 2) BankField (RegionName, BankName, BankValue, 1691 AccessType, LockRule, UpdateRule) 1692 3) IndexField (IndexName, DataName, 1693 AccessType, LockRule, UpdateRule) 1694For the Field operators above, the AccessType, LockRule, and UpdateRule 1695are now optional arguments. The default values are: 1696 AccessType: AnyAcc 1697 LockRule: NoLock 1698 UpdateRule: Preserve 1699 4) Mutex (MutexName, SyncLevel) 1700For this operator, the SyncLevel argument is now optional. This argument 1701is rarely used in any meaningful way by ASL code, and thus it makes sense 1702to make it optional. The default value is: 1703 SyncLevel: 0 1704 1705iASL: Attempted use of the ASL Unload() operator now results in the 1706following warning: 1707 "Unload is not supported by all operating systems" 1708This is in fact very true, and the Unload operator may be completely 1709deprecated in the near future. 1710 1711AcpiExec: Fixed a regression for the -fi option (Namespace initialization 1712file. Recent changes in the ACPICA module-level code support altered the 1713table load/initialization sequence . This means that the table load has 1714become a large method execution of the table itself. If Operation Region 1715Fields are used within any module-level code and the -fi option was 1716specified, the initialization values were populated only after the table 1717had completely finished loading (and thus the module-level code had 1718already been executed). This change moves the initialization of objects 1719listed in the initialization file to before the table is executed as a 1720method. Field unit values are now initialized before the table execution 1721is performed. 1722 1723---------------------------------------- 172431 May 2018. Summary of changes for version 20180531: 1725 1726 17271) ACPICA kernel-resident Subsystem: 1728 1729Implemented additional support to help ensure that a DSDT or SSDT is 1730fully loaded even if errors are incurred during the load. The majority of 1731the problems that are seen is the failure of individual AML operators 1732that occur during execution of any module-level code (MLC) existing in 1733the table. This support adds a mechanism to abort the current ASL 1734statement (AML opcode), emit an error message, and to simply move on to 1735the next opcode -- instead of aborting the entire table load. This is 1736different than the execution of a control method where the entire method 1737is aborted upon any error. The goal is to perform a very "best effort" to 1738load the ACPI tables. The most common MLC errors that have been seen in 1739the field are direct references to unresolved ASL/AML symbols (referenced 1740directly without the use of the CondRefOf operator to validate the 1741symbol). This new ACPICA behavior is now compatible with other ACPI 1742implementations. 1743 1744Interpreter: The Unload AML operator is no longer supported for the 1745reasons below. An AE_NOT_IMPLEMENTED exception is returned. 17461) A correct implementation on at least some hosts may not be possible. 17472) Other ACPI implementations do not correctly/fully support it. 17483) It requires host device driver support which is not known to exist. 1749 (To properly support namespace unload out from underneath.) 17504) This AML operator has never been seen in the field. 1751 1752Parser: Added a debug option to dump AML parse sub-trees as they are 1753being executed. Used with ACPI_DEBUG_PRINT, the enabling debug level is 1754ACPI_DB_PARSE_TREES. 1755 1756Debugger: Reduced the verbosity for errors incurred during table load and 1757module-level code execution. 1758 1759Completed an investigation into adding a namespace node "owner list" 1760instead of the current "owner ID" associated with namespace nodes. This 1761list would link together all nodes that are owned by an individual 1762control method. The purpose would be to enhance control method execution 1763by speeding up cleanup during method exit (all namespace nodes created by 1764a method are deleted upon method termination.) Currently, the entire 1765namespace must be searched for matching owner IDs if (and only if) the 1766method creates named objects outside of the local scope. However, by far 1767the most common case is that methods create objects locally, not outside 1768the method scope. There is already an ACPICA optimization in place that 1769only searches the entire namespace in the rare case of a method creating 1770objects elsewhere in the namespace. Therefore, it is felt that the 1771overhead of adding an additional pointer to each namespace node to 1772implement the owner list makes this feature unnecessary. 1773 1774 17752) iASL Compiler/Disassembler and Tools: 1776 1777iASL, Disassembler, and Template generator: Implemented support for 1778Revision D of the IORT table. Adds a new subtable that is used to specify 1779SMMUv3 PMCGs. rmurphy-arm. 1780 1781Disassembler: Restored correct table header validation for the "special" 1782ACPI tables -- RSDP and FACS. These tables do not contain a standard ACPI 1783table header and must be special-cased. This was a regression that has 1784been present for apparently a long time. 1785 1786AcpiExec: Reduced verbosity of the local exception handler implemented 1787within acpiexec. This handler is invoked by ACPICA upon any exceptions 1788generated during control method execution. A new option was added: -vh 1789restores the original verbosity level if desired. 1790 1791AcpiExec: Changed the default base from decimal to hex for the -x option 1792(set debug level). This simplifies the use of this option and matches the 1793behavior of the corresponding iASL -x option. 1794 1795AcpiExec: Restored a force-exit on multiple control-c (sigint) 1796interrupts. This allows program termination even if other issues cause 1797the control-c to fail. 1798 1799ASL test suite (ASLTS): Added tests for the recently implemented package 1800element resolution mechanism that allows forward references to named 1801objects from individual package elements (this mechanism provides 1802compatibility with other ACPI implementations.) 1803 1804 1805---------------------------------------- 18068 May 2018. Summary of changes for version 20180508: 1807 1808 18091) ACPICA kernel-resident subsystem: 1810 1811Completed the new (recently deployed) package resolution mechanism for 1812the Load and LoadTable ASL/AML operators. This fixes a regression that 1813was introduced in version 20180209 that could result in an 1814AE_AML_INTERNAL exception during the loading of a dynamic ACPI/AML table 1815(SSDT) that contains package objects. 1816 1817 18182) iASL Compiler/Disassembler and Tools: 1819 1820AcpiDump and AcpiXtract: Implemented support for ACPI tables larger than 18211 MB. This change allows for table offsets within the acpidump file to be 1822up to 8 characters. These changes are backwards compatible with existing 1823acpidump files. 1824 1825 1826---------------------------------------- 182727 April 2018. Summary of changes for version 20180427: 1828 1829 18301) ACPICA kernel-resident subsystem: 1831 1832Debugger: Added support for Package objects in the "Test Objects" 1833command. This command walks the entire namespace and evaluates all named 1834data objects (Integers, Strings, Buffers, and now Packages). 1835 1836Improved error messages for the namespace root node. Originally, the root 1837was referred to by the confusing string "\___". This has been replaced by 1838"Namespace Root" for clarification. 1839 1840Fixed a potential infinite loop in the AcpiRsDumpByteList function. Colin 1841Ian King <colin.king@canonical.com>. 1842 1843 18442) iASL Compiler/Disassembler and Tools: 1845 1846iASL: Implemented support to detect and flag illegal forward references. 1847For compatibility with other ACPI implementations, these references are 1848now illegal at the root level of the DSDT or SSDTs. Forward references 1849have always been illegal within control methods. This change should not 1850affect existing ASL/AML code because of the fact that these references 1851have always been illegal in the other ACPI implementation. 1852 1853iASL: Added error messages for the case where a table OEM ID and OEM 1854TABLE ID strings are longer than the ACPI-defined length. Previously, 1855these strings were simply silently truncated. 1856 1857iASL: Enhanced the -tc option (which creates an AML hex file in C, 1858suitable for import into a firmware project): 1859 1) Create a unique name for the table, to simplify use of multiple 1860SSDTs. 1861 2) Add a protection #ifdef in the file, similar to a .h header file. 1862With assistance from Sami Mujawar, sami.mujawar@arm.com and Evan Lloyd, 1863evan.lloyd@arm.com 1864 1865AcpiExec: Added a new option, -df, to disable the local fault handler. 1866This is useful during debugging, where it may be desired to drop into a 1867debugger on a fault. 1868 1869---------------------------------------- 187013 March 2018. Summary of changes for version 20180313: 1871 1872 18731) ACPICA kernel-resident subsystem: 1874 1875Implemented various improvements to the GPE support: 1876 18771) Dispatch all active GPEs at initialization time so that no GPEs are 1878lost. 18792) Enable runtime GPEs earlier. Some systems expect GPEs to be enabled 1880before devices are enumerated. 18813) Don't unconditionally clear ACPI IRQs during suspend/resume, so that 1882IRQs are not lost. 18834) Add parallel GPE handling to eliminate the possibility of dispatching 1884the same GPE twice. 18855) Dispatch any pending GPEs after enabling for the first time. 1886 1887AcpiGetObjectInfo - removed support for the _STA method. This was causing 1888problems on some platforms. 1889 1890Added a new _OSI string, "Windows 2017.2". 1891 1892Cleaned up and simplified the module-level code support. These changes 1893are in preparation for the eventual removal of the legacy MLC support 1894(deferred execution), replaced by the new MLC architecture which executes 1895the MLC as a table is loaded (DSDT/SSDTs). 1896 1897Changed a compile-time option to a runtime option. Changes the option to 1898ignore ACPI table load-time package resolution errors into a runtime 1899option. Used only for platforms that generate many AE_NOT_FOUND errors 1900during boot. AcpiGbl_IgnorePackageResolutionErrors. 1901 1902Fixed the ACPI_ERROR_NAMESPACE macro. This change involves putting some 1903ACPI_ERROR_NAMESPACE parameters inside macros. By doing so, we avoid 1904compilation errors from unused variables (seen with some compilers). 1905 1906 19072) iASL Compiler/Disassembler and Tools: 1908 1909ASLTS: parallelized execution in order to achieve an (approximately) 2X 1910performance increase. 1911 1912ASLTS: Updated to use the iASL __LINE__ and __METHOD__ macros. Improves 1913error reporting. 1914 1915---------------------------------------- 191609 February 2018. Summary of changes for version 20180209: 1917 1918 19191) ACPICA kernel-resident subsystem: 1920 1921Completed the final integration of the recent changes to Package Object 1922handling and the module-level AML code support. This allows forward 1923references from individual package elements when the package object is 1924declared from within module-level code blocks. Provides compatibility 1925with other ACPI implementations. 1926 1927The new architecture for the AML module-level code has been completed and 1928is now the default for the ACPICA code. This new architecture executes 1929the module-level code in-line as the ACPI table is loaded/parsed instead 1930of the previous architecture which deferred this code until after the 1931table was fully loaded. This solves some ASL code ordering issues and 1932provides compatibility with other ACPI implementations. At this time, 1933there is an option to fallback to the earlier architecture, but this 1934support is deprecated and is planned to be completely removed later this 1935year. 1936 1937Added a compile-time option to ignore AE_NOT_FOUND exceptions during 1938resolution of named reference elements within Package objects. Although 1939this is potentially a serious problem, it can generate a lot of 1940noise/errors on platforms whose firmware carries around a bunch of unused 1941Package objects. To disable these errors, define 1942ACPI_IGNORE_PACKAGE_RESOLUTION_ERRORS in the OS-specific header. All 1943errors are always reported for ACPICA applications such as AcpiExec. 1944 1945Fixed a regression related to the explicit type-conversion AML operators 1946(ToXXXX). The regression was introduced early in 2017 but was not seen 1947until recently because these operators are not fully supported by other 1948ACPI implementations and are thus rarely used by firmware developers. The 1949operators are defined by the ACPI specification to not implement the 1950"implicit result object conversion". The regression incorrectly 1951introduced this object conversion for the following explicit conversion 1952operators: 1953 ToInteger 1954 ToString 1955 ToBuffer 1956 ToDecimalString 1957 ToHexString 1958 ToBCD 1959 FromBCD 1960 1961 19622) iASL Compiler/Disassembler and Tools: 1963 1964iASL: Fixed a problem with the compiler constant folding feature as 1965related to the ToXXXX explicit conversion operators. These operators do 1966not support the "implicit result object conversion" by definition. Thus, 1967ASL expressions that use these operators cannot be folded to a simple 1968Store operator because Store implements the implicit conversion. This 1969change uses the CopyObject operator for the ToXXXX operator folding 1970instead. CopyObject is defined to not implement implicit result 1971conversions and is thus appropriate for folding the ToXXXX operators. 1972 1973iASL: Changed the severity of an error condition to a simple warning for 1974the case where a symbol is declared both locally and as an external 1975symbol. This accommodates existing ASL code. 1976 1977AcpiExec: The -ep option to enable the new architecture for module-level 1978code has been removed. It is replaced by the -dp option which instead has 1979the opposite effect: it disables the new architecture (the default) and 1980enables the legacy architecture. When the legacy code is removed in the 1981future, the -dp option will be removed also. 1982 1983---------------------------------------- 198405 January 2018. Summary of changes for version 20180105: 1985 1986 19871) ACPICA kernel-resident subsystem: 1988 1989Updated all copyrights to 2018. This affects all source code modules. 1990 1991Fixed a possible build error caused by an unresolved reference to the 1992AcpiUtSafeStrncpy function. 1993 1994Removed NULL pointer arithmetic in the various pointer manipulation 1995macros. All "(void *) NULL" constructs are converted to "(void *) 0". 1996This eliminates warnings/errors in newer C compilers. Jung-uk Kim. 1997 1998Added support for A32 ABI compilation, which uses the ILP32 model. Anuj 1999Mittal. 2000 2001 20022) iASL Compiler/Disassembler and Tools: 2003 2004ASLTS: Updated all copyrights to 2018. 2005 2006Tools: Updated all signon copyrights to 2018. 2007 2008AcpiXtract: Fixed a regression related to ACPI table signatures where the 2009signature was truncated to 3 characters (instead of 4). 2010 2011AcpiExec: Restore the original terminal mode after the use of the -v and 2012-vd options. 2013 2014ASLTS: Deployed the iASL __METHOD__ macro across the test suite. 2015 2016---------------------------------------- 201714 December 2017. Summary of changes for version 20171214: 2018 2019 20201) ACPICA kernel-resident subsystem: 2021 2022Fixed a regression in the external (public) AcpiEvaluateObjectTyped 2023interface where the optional "pathname" argument had inadvertently become 2024a required argument returning an error if omitted (NULL pointer 2025argument). 2026 2027Fixed two possible memory leaks related to the recently developed "late 2028resolution" of reference objects within ASL Package Object definitions. 2029 2030Added two recently defined _OSI strings: "Windows 2016" and "Windows 20312017". Mario Limonciello. 2032 2033Implemented and deployed a safer version of the C library function 2034strncpy: AcpiUtSafeStrncpy. The intent is to at least prevent the 2035creation of unterminated strings as a possible result of a standard 2036strncpy. 2037 2038Cleaned up and restructured the global variable file (acglobal.h). There 2039are many changes, but no functional changes. 2040 2041 20422) iASL Compiler/Disassembler and Tools: 2043 2044iASL Table Compiler: Fixed a problem with the DBG2 ACPI table where the 2045optional OemData field at the end of the table was incorrectly required 2046for proper compilation. It is now correctly an optional field. 2047 2048ASLTS: The entire suite was converted from standard ASL to the ASL+ 2049language, using the ASL-to-ASL+ converter which is integrated into the 2050iASL compiler. A binary compare of all output files has verified the 2051correctness of the conversion. 2052 2053iASL: Fixed the source code build for platforms where "char" is unsigned. 2054This affected the iASL lexer only. Jung-uk Kim. 2055 2056---------------------------------------- 205710 November 2017. Summary of changes for version 20171110: 2058 2059 20601) ACPICA kernel-resident subsystem: 2061 2062This release implements full support for ACPI 6.2A: 2063 NFIT - Added a new subtable, "Platform Capabilities Structure" 2064No other changes to ACPICA were required, since ACPI 6.2A is primarily an 2065errata release of the specification. 2066 2067Other ACPI table changes: 2068 IORT: Added the SMMUv3 Device ID mapping index. Hanjun Guo 2069 PPTT: Added cache attribute flag definitions to actbl1.h. Jeremy 2070Linton 2071 2072Utilities: Modified the string/integer conversion functions to use 2073internal 64-bit divide support instead of a native divide. On 32-bit 2074platforms, a 64-bit divide typically requires a library function which 2075may not be present in the build (kernel or otherwise). 2076 2077Implemented a targeted error message for timeouts returned from the 2078Embedded Controller device driver. This is seen frequently enough to 2079special-case an AE_TIME returned from an EC operation region access: 2080 "Timeout from EC hardware or EC device driver" 2081 2082Changed the "ACPI Exception" message prefix to "ACPI Error" so that all 2083runtime error messages have the identical prefix. 2084 2085 20862) iASL Compiler/Disassembler and Tools: 2087 2088AcpiXtract: Fixed a problem with table header detection within the 2089acpidump file. Processing a table could be ended early if a 0x40 (@) 2090appears in the original binary table, resulting in the @ symbol appearing 2091in the decoded ASCII field at the end of the acpidump text line. The 2092symbol caused acpixtract to incorrectly think it had reached the end of 2093the current table and the beginning of a new table. 2094 2095AcpiXtract: Added an option (-f) to ignore some errors during table 2096extraction. This initial implementation ignores non-ASCII and non- 2097printable characters found in the acpidump text file. 2098 2099TestSuite(ASLTS)/AcpiExec: Fixed and restored the memory usage statistics 2100for ASLTS. This feature is used to track memory allocations from 2101different memory caches within the ACPICA code. At the end of an ASLTS 2102run, these memory statistics are recorded and stored in a log file. 2103 2104Debugger (user-space version): Implemented a simple "Background" command. 2105Creates a new thread to execute a control method in the background, while 2106control returns to the debugger prompt to allow additional commands. 2107 Syntax: Background <Namepath> [Arguments] 2108 2109---------------------------------------- 211029 September 2017. Summary of changes for version 20170929: 2111 2112 21131) ACPICA kernel-resident subsystem: 2114 2115Redesigned and implemented an improved ASL While() loop timeout 2116mechanism. This mechanism is used to prevent infinite loops in the kernel 2117AML interpreter caused by either non-responsive hardware or incorrect AML 2118code. The new implementation uses AcpiOsGetTimer instead of a simple 2119maximum loop count, and is thus more accurate and constant across 2120different machines. The default timeout is currently 30 seconds, but this 2121may be adjusted later. 2122 2123Renamed the ACPI_AML_INFINITE_LOOP exception to AE_AML_LOOP_TIMEOUT to 2124better reflect the new implementation of the loop timeout mechanism. 2125 2126Updated the AcpiGetTimerDuration interface to cleanup the 64-bit support 2127and to fix an off-by-one error. Jung-uk Kim. 2128 2129Fixed an EFI build problem by updating the makefiles to for a new file 2130that was added, utstrsuppt.c 2131 2132 21332) iASL Compiler/Disassembler and Tools: 2134 2135Implemented full support for the PDTT, SDEV, and TPM2 ACPI tables. This 2136includes support in the table disassembler, compiler, and template 2137generator. 2138 2139iASL: Added an exception for an illegal type of recursive method 2140invocation. If a method creates named objects, the first recursive call 2141will fail at runtime. This change adds an error detection at compile time 2142to catch the problem up front. Note: Marking such a method as 2143"serialized" will not help with this problem, because the same thread can 2144acquire the method mutex more than once. Example compiler and runtime 2145output: 2146 2147 Method (MTH1) 2148 { 2149 Name (INT1, 1) 2150 MTH1 () 2151 } 2152 2153 dsdt.asl 22: MTH1 () 2154 Error 6152 - ^ Illegal recursive call to method 2155 that creates named objects (MTH1) 2156 2157Previous runtime exception: 2158 ACPI Error: [INT1] Namespace lookup failure, 2159 AE_ALREADY_EXISTS (20170831/dswload2-465) 2160 2161iASL: Updated support for External() opcodes to improve namespace 2162management and error detection. These changes are related to issues seen 2163with multiple-segment namespace pathnames within External declarations, 2164such as below: 2165 2166 External(\_SB.PCI0.GFX0, DeviceObj) 2167 External(\_SB.PCI0.GFX0.ALSI) 2168 2169iASL: Implemented support for multi-line error/warning messages. This 2170enables more detailed and helpful error messages as below, from the 2171initial deployment for the duplicate names error: 2172 2173 DSDT.iiii 1692: Device(PEG2) { 2174 Error 6074 - ^ Name already exists in scope 2175(PEG2) 2176 2177 Original name creation/declaration below: 2178 DSDT.iiii 93: External(\_SB.PCI0.PEG2, DeviceObj) 2179 2180AcpiXtract: Added additional flexibility to support differing input hex 2181dump formats. Specifically, hex dumps that contain partial disassembly 2182and/or comments within the ACPI table data definition. There exist some 2183dump utilities seen in the field that create this type of hex dump (such 2184as Simics). For example: 2185 2186 DSDT @ 0xdfffd0c0 (10999 bytes) 2187 Signature DSDT 2188 Length 10999 2189 Revision 1 2190 Checksum 0xf3 (Ok) 2191 OEM_ID BXPC 2192 OEM_table_id BXDSDT 2193 OEM_revision 1 2194 Creator_id 1280593481 2195 Creator_revision 537399345 2196 0000: 44 53 44 54 f7 2a 00 00 01 f3 42 58 50 43 00 00 2197 ... 2198 2af0: 5f 4c 30 46 00 a4 01 2199 2200Test suite: Miscellaneous changes/fixes: 2201 More cleanup and simplification of makefiles 2202 Continue compilation of test cases after a compile failure 2203 Do not perform binary compare unless both files actually exist 2204 2205iASL: Performed some code/module restructuring. Moved all memory 2206allocation functions to new modules. Two new files, aslallocate.c and 2207aslcache.c 2208 2209---------------------------------------- 221031 August 2017. Summary of changes for version 20170831: 2211 2212 22131) ACPICA kernel-resident subsystem: 2214 2215Implemented internal support for full 64-bit addresses that appear in all 2216Generic Address Structure (GAS) structures. Previously, only the lower 32 2217bits were used. Affects the use of GAS structures in the FADT and other 2218tables, as well as the GAS structures passed to the AcpiRead and 2219AcpiWrite public external interfaces that are used by drivers. Lv Zheng. 2220 2221Added header support for the PDTT ACPI table (Processor Debug Trigger 2222Table). Full support in the iASL Data Table Compiler and disassembler is 2223forthcoming. 2224 2225 22262) iASL Compiler/Disassembler and Tools: 2227 2228iASL/Disassembler: Fixed a problem with the PPTT ACPI table (Processor 2229Properties Topology Table) where a flag bit was specified in the wrong 2230bit position ("Line Size Valid", bit 6). 2231 2232iASL: Implemented support for Octal integer constants as defined by the 2233ASL language grammar, per the ACPI specification. Any integer constant 2234that starts with a zero is an octal constant. For example, 2235 Store (037777, Local0) /* Octal constant */ 2236 Store (0x3FFF, Local0) /* Hex equivalent */ 2237 Store (16383, Local0) /* Decimal equivalent */ 2238 2239iASL: Improved overflow detection for 64-bit string conversions during 2240compilation of integer constants. "Overflow" in this case means a string 2241that represents an integer that is too large to fit into a 64-bit value. 2242Any 64-bit constants within a 32-bit DSDT or SSDT are still truncated to 2243the low-order 32 bits with a warning, as previously implemented. Several 2244new exceptions are defined that indicate a 64-bit overflow, as well as 2245the base (radix) that was used during the attempted conversion. Examples: 2246 Local0 = 0xAAAABBBBCCCCDDDDEEEEFFFF // AE_HEX_OVERFLOW 2247 Local0 = 01111222233334444555566667777 // AE_OCTAL_OVERFLOW 2248 Local0 = 11112222333344445555666677778888 // AE_DECIMAL_OVERFLOW 2249 2250iASL: Added a warning for the case where a ResourceTemplate is declared 2251with no ResourceDescriptor entries (coded as "ResourceTemplate(){}"). In 2252this case, the resulting template is created with a single END_TAG 2253descriptor, which is essentially useless. 2254 2255iASL: Expanded the -vw option (ignore specific warnings/remarks) to 2256include compilation error codes as well. 2257 2258---------------------------------------- 225928 July 2017. Summary of changes for version 20170728: 2260 2261 22621) ACPICA kernel-resident subsystem: 2263 2264Fixed a regression seen with small resource descriptors that could cause 2265an inadvertent AE_AML_NO_RESOURCE_END_TAG exception. 2266 2267AML interpreter: Implemented a new feature that allows forward references 2268from individual named references within package objects that are 2269contained within blocks of "module-level code". This provides 2270compatibility with other ACPI implementations and supports existing 2271firmware that depends on this feature. Example: 2272 2273 Name (ABCD, 1) 2274 If (ABCD) /* An If() at module-level */ 2275 { 2276 Name (PKG1, Package() 2277 { 2278 INT1 /* Forward reference to object INT1 2279*/ 2280 }) 2281 Name (INT1, 0x1234) 2282 } 2283 2284AML Interpreter: Fixed a problem with the Alias() operator where aliases 2285to some ASL objects were not handled properly. Objects affected are: 2286Mutex, Event, and OperationRegion. 2287 2288AML Debugger: Enhanced to properly handle AML Alias objects. These 2289objects have one level of indirection which was not fully supported by 2290the debugger. 2291 2292Table Manager: Added support to detect and ignore duplicate SSDTs within 2293the XSDT/RSDT. This error in the XSDT has been seen in the field. 2294 2295EFI and EDK2 support: 2296 Enabled /WX flag for MSVC builds 2297 Added support for AcpiOsStall, AcpiOsSleep, and AcpiOsGetTimer 2298 Added local support for 64-bit multiply and shift operations 2299 Added support to compile acpidump.efi on Windows 2300 Added OSL function stubs for interfaces not used under EFI 2301 2302Added additional support for the _DMA predefined name. _DMA returns a 2303buffer containing a resource template. This change add support within the 2304resource manager (AcpiWalkResourceBuffer) to walk and parse this list of 2305resource descriptors. Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> 2306 2307 23082) iASL Compiler/Disassembler and Tools: 2309 2310iASL: Fixed a problem where the internal input line buffer(s) could 2311overflow if there are very long lines in the input ASL source code file. 2312Implemented buffer management that automatically increases the size of 2313the buffers as necessary. 2314 2315iASL: Added an option (-vx) to "expect" particular remarks, warnings and 2316errors. If the specified exception is not raised during compilation, the 2317compiler emits an error. This is intended to support the ASL test suite, 2318but may be useful in other contexts. 2319 2320iASL: Implemented a new predefined macro, __METHOD__, which returns a 2321string containing the name of the current control method that is being 2322compiled. 2323 2324iASL: Implemented debugger and table compiler support for the SDEI ACPI 2325table (Software Delegated Exception Interface). James Morse 2326<james.morse@arm.com> 2327 2328Unix/Linux makefiles: Added an option to disable compile optimizations. 2329The disable occurs when the NOOPT flag is set to TRUE. 2330theracermaster@gmail.com 2331 2332Acpidump: Added support for multiple DSDT and FACS tables. This can occur 2333when there are different tables for 32-bit versus 64-bit. 2334 2335Enhanced error reporting for the ASL test suite (ASLTS) by removing 2336unnecessary/verbose text, and emit the actual line number where an error 2337has occurred. These changes are intended to improve the usefulness of the 2338test suite. 2339 2340---------------------------------------- 234129 June 2017. Summary of changes for version 20170629: 2342 2343 23441) ACPICA kernel-resident subsystem: 2345 2346Tables: Implemented a deferred ACPI table verification. This is useful 2347for operating systems where the tables cannot be verified in the early 2348initialization stage due to early memory mapping limitations on some 2349architectures. Lv Zheng. 2350 2351Tables: Removed the signature validation for dynamically loaded tables. 2352Provides compatibility with other ACPI implementations. Previously, only 2353SSDT tables were allowed, as per the ACPI specification. Now, any table 2354signature can be used via the Load() operator. Lv Zheng. 2355 2356Tables: Fixed several mutex issues that could cause errors during table 2357acquisition. Lv Zheng. 2358 2359Tables: Fixed a problem where an ACPI warning could be generated if a 2360null pointer was passed to the AcpiPutTable interface. Lv Zheng. 2361 2362Tables: Added a mechanism to handle imbalances for the AcpiGetTable and 2363AcpiPutTable interfaces. This applies to the "late stage" table loading 2364when the use of AcpiPutTable is no longer required (since the system 2365memory manager is fully running and available). Lv Zheng. 2366 2367Fixed/Reverted a regression during processing of resource descriptors 2368that contain only a single EndTag. Fixes an AE_AML_NO_RESOURCE_END_TAG 2369exception in this case. 2370 2371Headers: IORT/SMMU support: Updated the SMMU models for Revision C of the 2372I/O Remapping specification. Robin Murphy <robin.murphy@arm.com> 2373 2374Interpreter: Fixed a possible fault if an Alias operator with an invalid 2375or duplicate target is encountered during Alias creation in 2376AcpiExCreateAlias. Alex James <theracermaster@gmail.com> 2377 2378Added an option to use designated initializers for function pointers. 2379Kees Cook <keescook@google.com> 2380 2381 23822) iASL Compiler/Disassembler and Tools: 2383 2384iASL: Allow compilation of External declarations with target pathnames 2385that refer to existing named objects within the table. Erik Schmauss. 2386 2387iASL: Fixed a regression when compiling FieldUnits. Fixes an error if a 2388FieldUnit name also is declared via External in the same table. Erik 2389Schmauss. 2390 2391iASL: Allow existing scope names within pathnames used in External 2392statements. For example: 2393 External (ABCD.EFGH) // ABCD exists, but EFGH is truly external 2394 Device (ABCD) 2395 2396iASL: IORT ACPI table: Implemented changes required to decode the new 2397Proximity Domain for the SMMUv3 IORT. Disassembler and Data Table 2398compiler. Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com> 2399 2400Disassembler: Don't abort disassembly on errors from External() 2401statements. Erik Schmauss. 2402 2403Disassembler: fixed a possible fault when one of the Create*Field 2404operators references a Resource Template. ACPICA Bugzilla 1396. 2405 2406iASL: In the source code, resolved some naming inconsistences across the 2407parsing support. Fixes confusion between "Parse Op" and "Parse Node". 2408Adds a new file, aslparseop.c 2409 2410---------------------------------------- 241131 May 2017. Summary of changes for version 20170531: 2412 2413 24140) ACPI 6.2 support: 2415 2416The ACPI specification version 6.2 has been released and is available at 2417http://uefi.org/specifications 2418 2419This version of ACPICA fully supports the ACPI 6.2 specification. Changes 2420are summarized below. 2421 2422New ACPI tables (Table Compiler/Disassembler/Templates): 2423 HMAT (Heterogeneous Memory Attributes Table) 2424 WSMT (Windows SMM Security Mitigation Table) 2425 PPTT (Processor Properties Topology Table) 2426 2427New subtables for existing ACPI tables: 2428 HEST (New subtable, Arch-deferred machine check) 2429 SRAT (New subtable, Arch-specific affinity structure) 2430 PCCT (New subtables, Extended PCC subspaces (types 3 and 4)) 2431 2432Simple updates for existing ACPI tables: 2433 BGRT (two new flag bits) 2434 HEST (New bit defined for several subtables, GHES_ASSIST) 2435 2436New Resource Descriptors and Resource macros (Compiler/Disassembler): 2437 PinConfig() 2438 PinFunction() 2439 PinGroup() 2440 PinGroupConfig() 2441 PinGroupFunction() 2442 New type for hardware error notification (section 18.3.2.9) 2443 2444New predefined names/methods (Compiler/Interpreter): 2445 _HMA (Heterogeneous Memory Attributes) 2446 _LSI (Label Storage Information) 2447 _LSR (Label Storage Read) 2448 _LSW (Label Storage Write) 2449 2450ASL grammar/macro changes (Compiler): 2451 For() ASL macro, implemented with the AML while operator 2452 Extensions to Concatenate operator 2453 Support for multiple definition blocks in same ASL file 2454 Clarification for Buffer operator 2455 Allow executable AML code underneath all scopes (Devices, etc.) 2456 Clarification/change for the _OSI return value 2457 ASL grammar update for reference operators 2458 Allow a zero-length string for AML filename in DefinitionBlock 2459 2460Miscellaneous: 2461 New device object notification value 2462 Remove a notify value (0x0C) for graceful shutdown 2463 New UUIDs for processor/cache properties and 2464 physical package property 2465 New _HID, ACPI0014 (Wireless Power Calibration Device) 2466 2467 24681) ACPICA kernel-resident subsystem: 2469 2470Added support to disable ACPI events on hardware-reduced platforms. 2471Eliminates error messages of the form "Could not enable fixed event". Lv 2472Zheng 2473 2474Fixed a problem using Device/Thermal objects with the ObjectType and 2475DerefOf ASL operators. This support had not been fully/properly 2476implemented. 2477 2478Fixed a problem where if a Buffer object containing a resource template 2479was longer than the actual resource template, an error was generated -- 2480even though the AML is legal. This case has been seen in the field. 2481 2482Fixed a problem with the header definition of the MADT PCAT_COMPAT flag. 2483The values for DUAL_PIC and MULTIPLE_APIC were reversed. 2484 2485Added header file changes for the TPM2 ACPI table. Update to new version 2486of the TCG specification. Adds a new TPM2 subtable for ARM SMC. 2487 2488Exported the external interfaces AcpiAcquireMutex and AcpiReleaseMutex. 2489These interfaces are intended to be used only in conjunction with the 2490predefined _DLM method (Device Lock Method). "This object appears in a 2491device scope when AML access to the device must be synchronized with the 2492OS environment". 2493 2494Example Code and Data Size: These are the sizes for the OS-independent 2495acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2496debug version of the code includes the debug output trace mechanism and 2497has a much larger code and data size. 2498 2499 Current Release: 2500 Non-Debug Version: 143.1K Code, 60.0K Data, 203.1K Total 2501 Debug Version: 204.0K Code, 84.3K Data, 288.3K Total 2502 Previous Release: 2503 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2504 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2505 2506 25072) iASL Compiler/Disassembler and Tools: 2508 2509iASL: Fixed a problem where an External() declaration could not refer to 2510a Field Unit. Erik Schmauss. 2511 2512Disassembler: Improved support for the Switch/Case operators. This 2513feature will disassemble AML code back to the original Switch operators 2514when possible, instead of an If..Else sequence. David Box 2515 2516iASL and disassembler: Improved the handling of multiple extraneous 2517parentheses for both ASL input and disassembled ASL output. 2518 2519Improved the behavior of the iASL compiler and disassembler to detect 2520improper use of external declarations 2521 2522Disassembler: Now aborts immediately upon detection of an unknown AML 2523opcode. The AML parser has no real way to recover from this, and can 2524result in the creation of an ill-formed parse tree that causes errors 2525later during the disassembly. 2526 2527All tools: Fixed a problem where the Unix application OSL did not handle 2528control-c correctly. For example, a control-c could incorrectly wake the 2529debugger. 2530 2531AcpiExec: Improved the Control-C handling and added a handler for 2532segmentation faults (SIGSEGV). Supports both Windows and Unix-like 2533environments. 2534 2535Reduced the verbosity of the generic unix makefiles. Previously, each 2536compilation displayed the full set of compiler options. This has been 2537eliminated as the options are easily inspected within the makefiles. Each 2538compilation now results in a single line of output. 2539 2540---------------------------------------- 254103 March 2017. Summary of changes for version 20170303: 2542 2543 25440) ACPICA licensing: 2545 2546The licensing information at the start of each source code module has 2547been updated. In addition to the Intel license, the dual GPLv2/BSD 2548license has been added for completeness. Now, a single version of the 2549source code should be suitable for all ACPICA customers. This is the 2550major change for this release since it affects all source code modules. 2551 2552 25531) ACPICA kernel-resident subsystem: 2554 2555Fixed two issues with the common asltypes.h header that could cause 2556problems in some environments: (Kim Jung-uk) 2557 Removed typedef for YY_BUFFER_STATE ? 2558 Fixes an error with earlier versions of Flex. 2559 Removed use of FILE typedef (which is only defined in stdio.h) 2560 2561 25622) iASL Compiler/Disassembler and Tools: 2563 2564Disassembler: fixed a regression introduced in 20170224. A fix for a 2565memory leak related to resource descriptor tags (names) could fault when 2566the disassembler was generated with 64-bit compilers. 2567 2568The ASLTS test suite has been updated to implement a new testing 2569architecture. During generation of the suite from ASL source, both the 2570ASL and ASL+ compilers are now validated, as well as the disassembler 2571itself (Erik Schmauss). The architecture executes as follows: 2572 2573 For every ASL source module: 2574 Compile (legacy ASL compilation) 2575 Disassemble the resulting AML to ASL+ source code 2576 Compile the new ASL+ module 2577 Perform a binary compare on the legacy AML and the new ASL+ AML 2578 The ASLTS suite then executes normally using the AML binaries. 2579 2580---------------------------------------- 258124 February 2017. Summary of changes for version 20170224: 2582 2583 25841) ACPICA kernel-resident subsystem: 2585 2586Interpreter: Fixed two issues with the control method return value auto- 2587repair feature, where an attempt to double-delete an internal object 2588could result in an ACPICA warning (for _CID repair and others). No fault 2589occurs, however, because the attempted deletion (actually a release to an 2590internal cache) is detected and ignored via object poisoning. 2591 2592Debugger: Fixed an AML interpreter mutex issue during the single stepping 2593of control methods. If certain debugger commands are executed during 2594stepping, a mutex acquire/release error could occur. Lv Zheng. 2595 2596Fixed some issues generating ACPICA with the Intel C compiler by 2597restoring the original behavior and compiler-specific include file in 2598acenv.h. Lv Zheng. 2599 2600Example Code and Data Size: These are the sizes for the OS-independent 2601acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2602debug version of the code includes the debug output trace mechanism and 2603has a much larger code and data size. 2604 2605 Current Release: 2606 Non-Debug Version: 141.7K Code, 58.5K Data, 200.2K Total 2607 Debug Version: 207.5K Code, 82.7K Data, 290.2K Total 2608 Previous Release: 2609 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 2610 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 2611 2612 26132) iASL Compiler/Disassembler and Tools: 2614 2615iASL/Disassembler: A preliminary version of a new ASL-to-ASL+ conversion 2616tool has been designed, implemented, and included in this release. The 2617key feature of this utility is that the original comments within the 2618input ASL file are preserved during the conversion process, and included 2619within the converted ASL+ file -- thus creating a transparent conversion 2620of existing ASL files to ASL+ (ASL 2.0). Erik Schmauss. 2621 2622 Usage: iasl -ca <ASL-filename> // Output is a .dsl file with 2623converted code 2624 2625iASL/Disassembler: Improved the detection and correct disassembly of 2626Switch/Case operators. This feature detects sequences of if/elseif/else 2627operators that originated from ASL Switch/Case/Default operators and 2628emits the original operators. David Box. 2629 2630iASL: Improved the IORT ACPI table support in the following areas. Lv 2631Zheng: 2632 Clear MappingOffset if the MappingCount is zero. 2633 Fix the disassembly of the SMMU GSU interrupt offset. 2634 Update the template file for the IORT table. 2635 2636Disassembler: Enhanced the detection and disassembly of resource 2637template/descriptor within a Buffer object. An EndTag descriptor is now 2638required to have a zero second byte, since all known ASL compilers emit 2639this. This helps eliminate incorrect decisions when a buffer is 2640disassembled (false positives on resource templates). 2641 2642---------------------------------------- 264319 January 2017. Summary of changes for version 20170119: 2644 2645 26461) General ACPICA software: 2647 2648Entire source code base: Added the 2017 copyright to all source code 2649legal/licensing module headers and utility/tool signons. This includes 2650the standard Linux dual-license header. This affects virtually every file 2651in the ACPICA core subsystem, iASL compiler, all ACPICA utilities, and 2652the ACPICA test suite. 2653 2654 26552) iASL Compiler/Disassembler and Tools: 2656 2657iASL: Removed/fixed an inadvertent remark when a method argument 2658containing a reference is used as a target operand within the method (and 2659never used as a simple argument), as in the example below. Jeffrey Hugo. 2660 2661 dsdt.asl 1507: Store(0x1, Arg0) 2662 Remark 2146 - ^ Method Argument is never used (Arg0) 2663 2664All tools: Removed the bit width of the compiler that generated the tool 2665from the common signon for all user space tools. This proved to be 2666confusing and unnecessary. This includes similar removal of HARDWARE_NAME 2667from the generic makefiles (Thomas Petazzoni). Example below. 2668 2669 Old: 2670 ASL+ Optimizing Compiler version 20170119-32 2671 ASL+ Optimizing Compiler version 20170119-64 2672 2673 New: 2674 ASL+ Optimizing Compiler version 20170119 2675 2676---------------------------------------- 267722 December 2016. Summary of changes for version 20161222: 2678 2679 26801) ACPICA kernel-resident subsystem: 2681 2682AML Debugger: Implemented a new mechanism to simplify and enhance 2683debugger integration into all environments, including kernel debuggers 2684and user-space utilities, as well as remote debug services. This 2685mechanism essentially consists of new OSL interfaces to support debugger 2686initialization/termination, as well as wait/notify interfaces to perform 2687the debugger handshake with the host. Lv Zheng. 2688 2689 New OSL interfaces: 2690 AcpiOsInitializeDebugger (void) 2691 AcpiOsTerminateDebugger (void) 2692 AcpiOsWaitCommandReady (void) 2693 AcpiOsNotifyCommandComplete (void) 2694 2695 New OS services layer: 2696 osgendbg.c -- Example implementation, and used for AcpiExec 2697 2698Update for Generic Address Space (GAS) support: Although the AccessWidth 2699and/or BitOffset fields of the GAS are not often used, this change now 2700fully supports these fields. This affects the internal support for FADT 2701registers, registers in other ACPI data tables, and the AcpiRead and 2702AcpiWrite public interfaces. Lv Zheng. 2703 2704Sleep support: In order to simplify integration of ACPI sleep for the 2705various host operating systems, a new OSL interface has been introduced. 2706AcpiOsEnterSleep allows the host to perform any required operations 2707before the final write to the sleep control register(s) is performed by 2708ACPICA. Lv Zheng. 2709 2710 New OSL interface: 2711 AcpiOsEnterSleep(SleepState, RegisterAValue, RegisterBValue) 2712 2713 Called from these internal interfaces: 2714 AcpiHwLegacySleep 2715 AcpiHwExtendedSleep 2716 2717EFI support: Added a very small EFI/ACPICA example application. Provides 2718a simple demo for EFI integration, as well as assisting with resolution 2719of issues related to customer ACPICA/EFI integration. Lv Zheng. See: 2720 2721 source/tools/efihello/efihello.c 2722 2723Local C library: Implemented several new functions to enhance ACPICA 2724portability, for environments where these clib functions are not 2725available (such as EFI). Lv Zheng: 2726 putchar 2727 getchar 2728 strpbrk 2729 strtok 2730 memmove 2731 2732Fixed a regression where occasionally a valid resource descriptor was 2733incorrectly detected as invalid at runtime, and a 2734AE_AML_NO_RESOURCE_END_TAG was returned. 2735 2736Fixed a problem with the recently implemented support that enables 2737control method invocations as Target operands to many ASL operators. 2738Warnings of this form: "Needed type [Reference], found [Processor]" were 2739seen at runtime for some method invocations. 2740 2741Example Code and Data Size: These are the sizes for the OS-independent 2742acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2743debug version of the code includes the debug output trace mechanism and 2744has a much larger code and data size. 2745 2746 Current Release: 2747 Non-Debug Version: 141.5K Code, 58.5K Data, 200.0K Total 2748 Debug Version: 201.7K Code, 82.7K Data, 284.4K Total 2749 Previous Release: 2750 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 2751 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 2752 2753 27542) iASL Compiler/Disassembler and Tools: 2755 2756Disassembler: Enhanced output by adding the capability to detect and 2757disassemble ASL Switch/Case statements back to the original ASL source 2758code instead of if/else blocks. David Box. 2759 2760AcpiHelp: Split a large file into separate files based upon 2761functionality/purpose. New files are: 2762 ahaml.c 2763 ahasl.c 2764 2765---------------------------------------- 276617 November 2016. Summary of changes for version 20161117: 2767 2768 27691) ACPICA kernel-resident subsystem: 2770 2771Table Manager: Fixed a regression introduced in 20160729, "FADT support 2772cleanup". This was an attempt to remove all references in the source to 2773the FADT version 2, which never was a legal version number. It was 2774skipped because it was an early version of 64-bit support that was 2775eventually abandoned for the current 64-bit support. 2776 2777Interpreter: Fixed a problem where runtime implicit conversion was 2778incorrectly disabled for the ASL operators below. This brings the 2779behavior into compliance with the ACPI specification: 2780 FromBCD 2781 ToBCD 2782 ToDecimalString 2783 ToHexString 2784 ToInteger 2785 ToBuffer 2786 2787Table Manager: Added a new public interface, AcpiPutTable, used to 2788release and free an ACPI table returned by AcpiGetTable and related 2789interfaces. Lv Zheng. 2790 2791Example Code and Data Size: These are the sizes for the OS-independent 2792acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2793debug version of the code includes the debug output trace mechanism and 2794has a much larger code and data size. 2795 2796 Current Release: 2797 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 2798 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 2799 Previous Release: 2800 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 2801 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 2802 2803 28042) iASL Compiler/Disassembler and Tools: 2805 2806Disassembler: Fixed a regression for disassembly of Resource Template. 2807Detection of templates in the AML stream missed some types of templates. 2808 2809iASL: Fixed a problem where an Access Size error was returned for the PCC 2810address space when the AccessSize of the GAS register is greater than a 2811DWORD. Hoan Tran. 2812 2813iASL: Implemented several grammar changes for the operators below. These 2814changes are slated for the next version of the ACPI specification: 2815 RefOf - Disallow method invocation as an operand 2816 CondRefOf - Disallow method invocation as an operand 2817 DerefOf - Disallow operands that use the result from operators 2818that 2819 do not return a reference (Changed TermArg to 2820SuperName). 2821 2822iASL: Control method invocations are now allowed for Target operands, as 2823per the ACPI specification. Removed error for using a control method 2824invocation as a Target operand. 2825 2826Disassembler: Improved detection of Resource Templates, Unicode, and 2827Strings within Buffer objects. These subtypes do not contain a specific 2828opcode to indicate the originating ASL code, and they must be detected by 2829other means within the disassembler. 2830 2831iASL: Implemented an optimization improvement for 32-bit ACPI tables 2832(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 2833only after 64-bit to 32-bit truncation. A truncation warning message is 2834still emitted, however. 2835 2836AcpiXtract: Implemented handling for both types of line terminators (LF 2837or CR/LF) so that it can accept AcpiDump output files from any system. 2838Peter Wu. 2839 2840AcpiBin: Added two new options for comparing AML files: 2841 -a: compare and display ALL mismatches 2842 -o: start compare at this offset into the second file 2843 2844---------------------------------------- 284530 September 2016. Summary of changes for version 20160930: 2846 2847 28481) ACPICA kernel-resident subsystem: 2849 2850Fixed a regression in the internal AcpiTbFindTable function where a non 2851AE_OK exception could inadvertently be returned even if the function did 2852not fail. This problem affects the following operators: 2853 DataTableRegion 2854 LoadTable 2855 2856Fixed a regression in the LoadTable operator where a load to any 2857namespace location other than the root no longer worked properly. 2858 2859Increased the maximum loop count value that will result in the 2860AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 2861prevent infinite loops within the AML interpreter and thus the host OS 2862kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 28631,048,575). 2864 2865Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 2866acpixf.h file. This allows hosts to easily configure the maximum loop 2867count at runtime. 2868 2869Removed an illegal character in the strtoul64.c file. This character 2870caused errors with some C compilers. 2871 2872Example Code and Data Size: These are the sizes for the OS-independent 2873acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2874debug version of the code includes the debug output trace mechanism and 2875has a much larger code and data size. 2876 2877 Current Release: 2878 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 2879 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 2880 Previous Release: 2881 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 2882 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 2883 2884 28852) iASL Compiler/Disassembler and Tools: 2886 2887Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 2888the simpler ASL ElseIf keyword. During the conversion, a trailing If 2889block could be lost and missing from the disassembled output. 2890 2891iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 2892the missing rule caused a parse error when using the Index operator as an 2893operand to ObjectType. This construct now compiles properly. Example: 2894 ObjectType(PKG1[4]). 2895 2896iASL: Correctly handle unresolved symbols in the hardware map file (-lm 2897option). Previously, unresolved symbols could cause a protection fault. 2898Such symbols are now marked as unresolved in the map file. 2899 2900iASL: Implemented support to allow control method invocations as an 2901operand to the ASL DeRefOf operator. Example: 2902 DeRefOf(MTH1(Local0)) 2903 2904Disassembler: Improved support for the ToPLD ASL macro. Detection of a 2905possible _PLD buffer now includes examination of both the normal buffer 2906length (16 or 20) as well as the surrounding AML package length. 2907 2908Disassembler: Fixed a problem with the decoding of complex expressions 2909within the Divide operator for ASL+. For the case where both the quotient 2910and remainder targets are specified, the entire statement cannot be 2911disassembled. Previously, the output incorrectly contained a mix of ASL- 2912and ASL+ operators. This mixed statement causes a syntax error when 2913compiled. Example: 2914 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 2915disassembled to: 2916 Divide (INT1 + 6, 128, RSLT, QUOT) 2917 2918iASL/Tools: Added support to process AML and non-AML ACPI tables 2919consistently. For the disassembler and AcpiExec, allow all types of ACPI 2920tables (AML and data tables). For the iASL -e option, allow only AML 2921tables (DSDT/SSDT). 2922 2923---------------------------------------- 292431 August 2016. Summary of changes for version 20160831: 2925 2926 29271) ACPICA kernel-resident subsystem: 2928 2929Improve support for the so-called "module-level code", which is defined 2930to be math, logical and control AML opcodes that appear outside of any 2931control method. This change improves the support by adding more opcodes 2932that can be executed in the manner. Some other issues have been solved, 2933and the ASL grammar changes to support such code under all scope 2934operators (Device, etc.) are complete. Lv Zheng. 2935 2936UEFI support: these OSL functions have been implemented. This is an 2937additional step toward supporting the AcpiExec utility natively (with 2938full hardware access) under UEFI. Marcelo Ferreira. 2939 AcpiOsReadPciConfiguration 2940 AcpiOsWritePciConfiguration 2941 2942Fixed a possible mutex error during control method auto-serialization. Lv 2943Zheng. 2944 2945Updated support for the Generic Address Structure by fully implementing 2946all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 2947Zheng. 2948 2949Updated the return value for the internal _OSI method. Instead of 29500xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 2951for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 2952implementations, and will be reflected and clarified in the next version 2953of the ACPI specification. 2954 2955Implemented two new table events that can be passed to an ACPICA table 2956handler. These events are used to indicate a table installation or 2957uninstallation. These events are used in addition to existed table load 2958and unload events. Lv Zheng. 2959 2960Implemented a cleanup for all internal string-to-integer conversions. 2961Consolidate multiple versions of this functionality and limit possible 2962bases to either 10 or 16 to simplify the code. Adds a new file, 2963utstrtoul64. 2964 2965Cleanup the inclusion order of the various compiler-specific headers. 2966This simplifies build configuration management. The compiler-specific 2967headers are now split out from the host-specific headers. Lv Zheng. 2968 2969Example Code and Data Size: These are the sizes for the OS-independent 2970acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2971debug version of the code includes the debug output trace mechanism and 2972has a much larger code and data size. 2973 2974 Current Release: 2975 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 2976 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 2977 2978 29792) iASL Compiler/Disassembler and Tools: 2980 2981iASL/AcpiExec: Added a command line option to display the build date/time 2982of the tool (-vd). This can be useful to verify that the correct version 2983of the tools are being used. 2984 2985AML Debugger: Implemented a new subcommand ("execute predef") to execute 2986all predefined control methods and names within the current namespace. 2987This can be useful for debugging problems with ACPI tables and the ACPI 2988namespace. 2989 2990---------------------------------------- 299129 July 2016. Summary of changes for version 20160729: 2992 2993 29941) ACPICA kernel-resident subsystem: 2995 2996Implemented basic UEFI support for the various ACPICA tools. This 2997includes: 29981) An OSL to implement the various AcpiOs* interfaces on UEFI. 29992) Support to obtain the ACPI tables on UEFI. 30003) Local implementation of required C library functions not available on 3001UEFI. 30024) A front-end (main) function for the tools for UEFI-related 3003initialization. 3004 3005The initial deployment of this support is the AcpiDump utility executing 3006as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 3007Current environments supported are Linux/Unix. MSVC generation is not 3008supported at this time. See the generate/efi/README file for build 3009instructions. Lv Zheng. 3010 3011Future plans include porting the AcpiExec utility to execute natively on 3012the platform with I/O and memory access. This will allow viewing/dump of 3013the platform namespace and native execution of ACPI control methods that 3014access the actual hardware. To fully implement this support, the OSL 3015functions below must be implemented with UEFI interfaces. Any community 3016help in the implementation of these functions would be appreciated: 3017 AcpiOsReadPort 3018 AcpiOsWritePort 3019 AcpiOsReadMemory 3020 AcpiOsWriteMemory 3021 AcpiOsReadPciConfiguration 3022 AcpiOsWritePciConfiguration 3023 3024Restructured and standardized the C library configuration for ACPICA, 3025resulting in the various configuration options below. This includes a 3026global restructuring of the compiler-dependent and platform-dependent 3027include files. These changes may affect the existing platform-dependent 3028configuration files on some hosts. Lv Zheng. 3029 3030The current C library configuration options appear below. For any issues, 3031it may be helpful to examine the existing compiler-dependent and 3032platform-dependent files as examples. Lv Zheng. 3033 30341) Linux kernel: 3035 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 3036library. 3037 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 30382) Unix/Windows/BSD applications: 3039 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 3040library. 3041 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 30423) UEFI applications: 3043 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 3044library. 3045 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 30464) UEFI applications (EDK2/StdLib): 3047 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 3048 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 3049 3050 3051AML interpreter: "module-level code" support. Allows for execution of so- 3052called "executable" AML code (math/logical operations, etc.) outside of 3053control methods not just at the module level (top level) but also within 3054any scope declared outside of a control method - Scope{}, Device{}, 3055Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 3056 3057Simplified the configuration of the "maximum AML loops" global option by 3058adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 3059modified at runtime. 3060 3061 3062Example Code and Data Size: These are the sizes for the OS-independent 3063acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3064debug version of the code includes the debug output trace mechanism and 3065has a much larger code and data size. 3066 3067 Current Release: 3068 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 3069 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 3070 3071 30722) iASL Compiler/Disassembler and Tools: 3073 3074iASL: Add full support for the RASF ACPI table (RAS Features Table). 3075Includes disassembler, data table compiler, and header support. 3076 3077iASL Expand "module-level code" support. Allows for 3078compilation/disassembly of so-called "executable" AML code (math/logical 3079operations, etc.) outside of control methods not just at the module level 3080(top level) but also within any scope declared outside of a control 3081method - Scope{}, Device{}, Processor{}, PowerResource{}, and 3082ThermalZone{}. 3083 3084AcpiDump: Added support for dumping all SSDTs on newer versions of 3085Windows. These tables are now easily available -- SSDTs are not available 3086through the registry on older versions. 3087 3088---------------------------------------- 308927 May 2016. Summary of changes for version 20160527: 3090 3091 30921) ACPICA kernel-resident subsystem: 3093 3094Temporarily reverted the new arbitrary bit length/alignment support in 3095AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 3096a number of regressions with the new code that need to be fully resolved 3097and tested before this support can be finally integrated into ACPICA. 3098Apologies for any inconveniences these issues may have caused. 3099 3100The ACPI message macros are not configurable (ACPI_MSG_ERROR, 3101ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 3102and ACPI_MSG_BIOS_WARNING). Lv Zheng. 3103 3104Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 3105option. Adds a new return macro, return_STR. Junk-uk Kim. 3106 3107Example Code and Data Size: These are the sizes for the OS-independent 3108acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3109debug version of the code includes the debug output trace mechanism and 3110has a much larger code and data size. 3111 3112 Current Release: 3113 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 3114 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 3115 Previous Release: 3116 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 3117 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 3118 3119---------------------------------------- 312022 April 2016. Summary of changes for version 20160422: 3121 31221) ACPICA kernel-resident subsystem: 3123 3124Fixed a regression in the GAS (generic address structure) arbitrary bit 3125support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 3126and incorrect return values. Lv Zheng. ACPICA BZ 1270. 3127 3128ACPI 6.0: Added support for new/renamed resource macros. One new argument 3129was added to each of these macros, and the original name has been 3130deprecated. The AML disassembler will always disassemble to the new 3131names. Support for the new macros was added to iASL, disassembler, 3132resource manager, and the acpihelp utility. ACPICA BZ 1274. 3133 3134 I2cSerialBus -> I2cSerialBusV2 3135 SpiSerialBus -> SpiSerialBusV2 3136 UartSerialBus -> UartSerialBusV2 3137 3138ACPI 6.0: Added support for a new integer field that was appended to the 3139package object returned by the _BIX method. This adds iASL compile-time 3140and AML runtime error checking. ACPICA BZ 1273. 3141 3142ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 3143Subspace Type2" (Headers, Disassembler, and data table compiler). 3144 3145Example Code and Data Size: These are the sizes for the OS-independent 3146acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3147debug version of the code includes the debug output trace mechanism and 3148has a much larger code and data size. 3149 3150 Current Release: 3151 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 3152 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 3153 Previous Release: 3154 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 3155 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 3156 3157 31582) iASL Compiler/Disassembler and Tools: 3159 3160iASL: Implemented an ASL grammar extension to allow/enable executable 3161"module-level code" to be created and executed under the various 3162operators that create new scopes. This type of AML code is already 3163supported in all known AML interpreters, and the grammar change will 3164appear in the next version of the ACPI specification. Simplifies the 3165conditional runtime creation of named objects under these object types: 3166 3167 Device 3168 PowerResource 3169 Processor 3170 Scope 3171 ThermalZone 3172 3173iASL: Implemented a new ASL extension, a "For" loop macro to add greater 3174ease-of-use to the ASL language. The syntax is similar to the 3175corresponding C operator, and is implemented with the existing AML While 3176opcode -- thus requiring no changes to existing AML interpreters. 3177 3178 For (Initialize, Predicate, Update) {TermList} 3179 3180Grammar: 3181 ForTerm := 3182 For ( 3183 Initializer // Nothing | TermArg => ComputationalData 3184 Predicate // Nothing | TermArg => ComputationalData 3185 Update // Nothing | TermArg => ComputationalData 3186 ) {TermList} 3187 3188 3189iASL: The _HID/_ADR detection and validation has been enhanced to search 3190under conditionals in order to allow these objects to be conditionally 3191created at runtime. 3192 3193iASL: Fixed several issues with the constant folding feature. The 3194improvement allows better detection and resolution of statements that can 3195be folded at compile time. ACPICA BZ 1266. 3196 3197iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 3198conversion to the ASL ElseIf operator where incorrect ASL code could be 3199generated. 3200 3201iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 3202sometimes an extra (and extraneous) set of parentheses were emitted for 3203some combinations of operators. Although this did not cause any problems 3204with recompilation of the disassembled code, it made the code more 3205difficult to read. David Box. ACPICA BZ 1231. 3206 3207iASL: Changed to ignore the unreferenced detection for predefined names 3208of resource descriptor elements, when the resource descriptor is 3209created/defined within a control method. 3210 3211iASL: Disassembler: Fix a possible fault with externally declared Buffer 3212objects. 3213 3214---------------------------------------- 321518 March 2016. Summary of changes for version 20160318: 3216 32171) ACPICA kernel-resident subsystem: 3218 3219Added support for arbitrary bit lengths and bit offsets for registers 3220defined by the Generic Address Structure. Previously, only aligned bit 3221lengths of 8/16/32/64 were supported. This was sufficient for many years, 3222but recently some machines have been seen that require arbitrary bit- 3223level support. ACPICA BZ 1240. Lv Zheng. 3224 3225Fixed an issue where the \_SB._INI method sometimes must be evaluated 3226before any _REG methods are evaluated. Lv Zheng. 3227 3228Implemented several changes related to ACPI table support 3229(Headers/Disassembler/TableCompiler): 3230NFIT: For ACPI 6.1, updated to add some additional new fields and 3231constants. 3232FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 32336). 3234DMAR: Added new constants per the 10/2014 DMAR spec. 3235IORT: Added new subtable per the 10/2015 IORT spec. 3236HEST: For ACPI 6.1, added new constants and new subtable. 3237DBG2: Added new constants per the 12/2015 DBG2 spec. 3238FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 3239ACPICA BZ 1249. 3240ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 3241 3242Updated header support for the DMAR table to match the current version of 3243the related spec. 3244 3245Added extensions to the ASL Concatenate operator to allow any ACPI object 3246to be passed as an operand. Any object other than Integer/String/Buffer 3247simply returns a string containing the object type. This extends the 3248usefulness of the Printf macros. Previously, Concatenate would abort the 3249control method if a non-data object was encountered. 3250 3251ACPICA source code: Deployed the C "const" keyword across the source code 3252where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 3253 3254Example Code and Data Size: These are the sizes for the OS-independent 3255acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3256debug version of the code includes the debug output trace mechanism and 3257has a much larger code and data size. 3258 3259 Current Release: 3260 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 3261 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 3262 Previous Release: 3263 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3264 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3265 3266 32672) iASL Compiler/Disassembler and Tools: 3268 3269iASL/Disassembler: Improved the heuristic used to determine the number of 3270arguments for an externally defined control method (a method in another 3271table). Although this is an improvement, there is no deterministic way to 3272"guess" the number of method arguments. Only the ACPI 6.0 External opcode 3273will completely solve this problem as it is deployed (automatically) in 3274newer BIOS code. 3275 3276iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 3277statements that could cause errors when the disassembled file is 3278compiled. ACPICA BZ 1243. David Box. 3279 3280iASL: Fixed a regression caused by the merger of the two versions of the 3281local strtoul64. Because of a dependency on a global variable, strtoul64 3282could return an error for integers greater than a 32-bit value. ACPICA BZ 32831260. 3284 3285iASL: Fixed a regression where a fault could occur for an ASL Return 3286statement if it invokes a control method that is not resolved. ACPICA BZ 32871264. 3288 3289AcpiXtract: Improved input file validation: detection of binary files and 3290non-acpidump text files. 3291 3292---------------------------------------- 329312 February 2016. Summary of changes for version 20160212: 3294 32951) ACPICA kernel-resident subsystem: 3296 3297Implemented full support for the ACPI 6.1 specification (released in 3298January). This version of the specification is available at: 3299http://www.uefi.org/specifications 3300 3301Only a relatively small number of changes were required in ACPICA to 3302support ACPI 6.1, in these areas: 3303- New predefined names 3304- New _HID values 3305- A new subtable for HEST 3306- A few other header changes for new values 3307 3308Ensure \_SB_._INI is executed before any _REG methods are executed. There 3309appears to be existing BIOS code that relies on this behavior. Lv Zheng. 3310 3311Reverted a change made in version 20151218 which enabled method 3312invocations to be targets of various ASL operators (SuperName and Target 3313grammar elements). While the new behavior is supported by the ACPI 3314specification, other AML interpreters do not support this behavior and 3315never will. The ACPI specification will be updated for ACPI 6.2 to remove 3316this support. Therefore, the change was reverted to the original ACPICA 3317behavior. 3318 3319ACPICA now supports the GCC 6 compiler. 3320 3321Current Release: (Note: build changes increased sizes) 3322 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 3323 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 3324Previous Release: 3325 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3326 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 3327 3328 33292) iASL Compiler/Disassembler and Tools: 3330 3331Completed full support for the ACPI 6.0 External() AML opcode. The 3332compiler emits an external AML opcode for each ASL External statement. 3333This opcode is used by the disassembler to assist with the disassembly of 3334external control methods by specifying the required number of arguments 3335for the method. AML interpreters do not use this opcode. To ensure that 3336interpreters do not even see the opcode, a block of one or more external 3337opcodes is surrounded by an "If(0)" construct. As this feature becomes 3338commonly deployed in BIOS code, the ability of disassemblers to correctly 3339disassemble AML code will be greatly improved. David Box. 3340 3341iASL: Implemented support for an optional cross-reference output file. 3342The -lx option will create a the cross-reference file with the suffix 3343"xrf". Three different types of cross-reference are created in this file: 3344- List of object references made from within each control method 3345- Invocation (caller) list for each user-defined control method 3346- List of references to each non-method object in the namespace 3347 3348iASL: Method invocations as ASL Target operands are now disallowed and 3349flagged as errors in preparation for ACPI 6.2 (see the description of the 3350problem above). 3351 3352---------------------------------------- 33538 January 2016. Summary of changes for version 20160108: 3354 33551) ACPICA kernel-resident subsystem: 3356 3357Updated all ACPICA copyrights and signons to 2016: Added the 2016 3358copyright to all source code module headers and utility/tool signons. 3359This includes the standard Linux dual-license header. This affects 3360virtually every file in the ACPICA core subsystem, iASL compiler, all 3361ACPICA utilities, and the ACPICA test suite. 3362 3363Fixed a regression introduced in version 20151218 concerning the 3364execution of so-called module-level ASL/AML code. Namespace objects 3365created under a module-level If() construct were not properly/fully 3366entered into the namespace and could cause an interpreter fault when 3367accessed. 3368 3369Example Code and Data Size: These are the sizes for the OS-independent 3370acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3371debug version of the code includes the debug output trace mechanism and 3372has a much larger code and data size. 3373 3374Current Release: 3375 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 3376 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 3377 Previous Release: 3378 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3379 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3380 3381 33822) iASL Compiler/Disassembler and Tools: 3383 3384Fixed a problem with the compilation of the GpioIo and GpioInt resource 3385descriptors. The _PIN field name was incorrectly defined to be an array 3386of 32-bit values, but the _PIN values are in fact 16 bits each. This 3387would cause incorrect bit width warnings when using Word (16-bit) fields 3388to access the descriptors. 3389 3390 3391---------------------------------------- 339218 December 2015. Summary of changes for version 20151218: 3393 33941) ACPICA kernel-resident subsystem: 3395 3396Implemented per-AML-table execution of "module-level code" as individual 3397ACPI tables are loaded into the namespace during ACPICA initialization. 3398In other words, any module-level code within an AML table is executed 3399immediately after the table is loaded, instead of batched and executed 3400after all of the tables have been loaded. This provides compatibility 3401with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 3402David Box. 3403 3404To fully support the feature above, the default operation region handlers 3405for the SystemMemory, SystemIO, and PCI_Config address spaces are now 3406installed before any ACPI tables are loaded. This enables module-level 3407code to access these address spaces during the table load and module- 3408level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 3409Box. 3410 3411Implemented several changes to the internal _REG support in conjunction 3412with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 3413utilities for the changes above. Although these tools were changed, host 3414operating systems that simply use the default handlers for SystemMemory, 3415SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 3416 3417For example, in the code below, DEV1 is conditionally added to the 3418namespace by the DSDT via module-level code that accesses an operation 3419region. The SSDT references DEV1 via the Scope operator. DEV1 must be 3420created immediately after the DSDT is loaded in order for the SSDT to 3421successfully reference DEV1. Previously, this code would cause an 3422AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 3423fully supported by ACPICA. 3424 3425 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 3426 { 3427 OperationRegion (OPR1, SystemMemory, 0x400, 32) 3428 Field (OPR1, AnyAcc, NoLock, Preserve) 3429 { 3430 FLD1, 1 3431 } 3432 If (FLD1) 3433 { 3434 Device (\DEV1) 3435 { 3436 } 3437 } 3438 } 3439 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 3440 { 3441 External (\DEV1, DeviceObj) 3442 Scope (\DEV1) 3443 { 3444 } 3445 } 3446 3447Fixed an AML interpreter problem where control method invocations were 3448not handled correctly when the invocation was itself a SuperName argument 3449to another ASL operator. In these cases, the method was not invoked. 3450ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 3451argument: 3452 Store 3453 Acquire, Wait 3454 CondRefOf, RefOf 3455 Decrement, Increment 3456 Load, Unload 3457 Notify 3458 Signal, Release, Reset 3459 SizeOf 3460 3461Implemented automatic String-to-ObjectReference conversion support for 3462packages returned by predefined names (such as _DEP). A common BIOS error 3463is to add double quotes around an ObjectReference namepath, which turns 3464the reference into an unexpected string object. This support detects the 3465problem and corrects it before the package is returned to the caller that 3466invoked the method. Lv Zheng. 3467 3468Implemented extensions to the Concatenate operator. Concatenate now 3469accepts any type of object, it is not restricted to simply 3470Integer/String/Buffer. For objects other than these 3 basic data types, 3471the argument is treated as a string containing the name of the object 3472type. This expands the utility of Concatenate and the Printf/Fprintf 3473macros. ACPICA BZ 1222. 3474 3475Cleaned up the output of the ASL Debug object. The timer() value is now 3476optional and no longer emitted by default. Also, the basic data types of 3477Integer/String/Buffer are simply emitted as their values, without a data 3478type string -- since the data type is obvious from the output. ACPICA BZ 34791221. 3480 3481Example Code and Data Size: These are the sizes for the OS-independent 3482acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3483debug version of the code includes the debug output trace mechanism and 3484has a much larger code and data size. 3485 3486 Current Release: 3487 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 3488 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 3489 Previous Release: 3490 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3491 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3492 3493 34942) iASL Compiler/Disassembler and Tools: 3495 3496iASL: Fixed some issues with the ASL Include() operator. This operator 3497was incorrectly defined in the iASL parser rules, causing a new scope to 3498be opened for the code within the include file. This could lead to 3499several issues, including allowing ASL code that is technically illegal 3500and not supported by AML interpreters. Note, this does not affect the 3501related #include preprocessor operator. ACPICA BZ 1212. 3502 3503iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 3504operator is essentially an ASL macro since there is no AML opcode 3505associated with it. The code emitted by the iASL compiler for ElseIf is 3506an Else opcode followed immediately by an If opcode. The disassembler 3507will now emit an ElseIf if it finds an Else immediately followed by an 3508If. This simplifies the decoded ASL, especially for deeply nested 3509If..Else and large Switch constructs. Thus, the disassembled code more 3510closely follows the original source ASL. ACPICA BZ 1211. Example: 3511 3512 Old disassembly: 3513 Else 3514 { 3515 If (Arg0 == 0x02) 3516 { 3517 Local0 = 0x05 3518 } 3519 } 3520 3521 New disassembly: 3522 ElseIf (Arg0 == 0x02) 3523 { 3524 Local0 = 0x05 3525 } 3526 3527AcpiExec: Added support for the new module level code behavior and the 3528early region installation. This required a small change to the 3529initialization, since AcpiExec must install its own operation region 3530handlers. 3531 3532AcpiExec: Added support to make the debug object timer optional. Default 3533is timer disabled. This cleans up the debug object output -- the timer 3534data is rarely used. 3535 3536AcpiExec: Multiple ACPI tables are now loaded in the order that they 3537appear on the command line. This can be important when there are 3538interdependencies/references between the tables. 3539 3540iASL/Templates. Add support to generate template files with multiple 3541SSDTs within a single output file. Also added ommand line support to 3542specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 35431223, 1225. 3544 3545 3546---------------------------------------- 354724 November 2015. Summary of changes for version 20151124: 3548 35491) ACPICA kernel-resident subsystem: 3550 3551Fixed a possible regression for a previous update to FADT handling. The 3552FADT no longer has a fixed table ID, causing some issues with code that 3553was hardwired to a specific ID. Lv Zheng. 3554 3555Fixed a problem where the method auto-serialization could interfere with 3556the current SyncLevel. This change makes the auto-serialization support 3557transparent to the SyncLevel support and management. 3558 3559Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 3560interface is intended for early access to the namespace during the 3561initial namespace device discovery walk. The _SUB method has been seen to 3562access operation regions in some cases, causing errors because the 3563operation regions are not fully initialized. 3564 3565AML Debugger: Fixed some issues with the terminate/quit/exit commands 3566that can cause faults. Lv Zheng. 3567 3568AML Debugger: Add thread ID support so that single-step mode only applies 3569to the AML Debugger thread. This prevents runtime errors within some 3570kernels. Lv Zheng. 3571 3572Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 3573methods that are invoked by this interface are optional, removed warnings 3574emitted for the case where one or more of these methods do not exist. 3575ACPICA BZ 1208, original change by Prarit Bhargava. 3576 3577Made a major pass through the entire ACPICA source code base to 3578standardize formatting that has diverged a bit over time. There are no 3579functional changes, but this will of course cause quite a few code 3580differences from the previous ACPICA release. 3581 3582Example Code and Data Size: These are the sizes for the OS-independent 3583acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3584debug version of the code includes the debug output trace mechanism and 3585has a much larger code and data size. 3586 3587 Current Release: 3588 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 3589 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 3590 Previous Release: 3591 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3592 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3593 3594 35952) iASL Compiler/Disassembler and Tools: 3596 3597iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 3598definition blocks within a single ASL file and the resulting AML file. 3599Support for this type of file was also added to the various tools that 3600use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 3601example code below shows two definition blocks within the same file: 3602 3603 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 36040x12345678) 3605 { 3606 } 3607 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 3608 { 3609 } 3610 3611iASL: Enhanced typechecking for the Name() operator. All expressions for 3612the value of the named object must be reduced/folded to a single constant 3613at compile time, as per the ACPI specification (the AML definition of 3614Name()). 3615 3616iASL: Fixed some code indentation issues for the -ic and -ia options (C 3617and assembly headers). Now all emitted code correctly begins in column 1. 3618 3619iASL: Added an error message for an attempt to open a Scope() on an 3620object defined in an SSDT. The DSDT is always loaded into the namespace 3621first, so any attempt to open a Scope on an SSDT object will fail at 3622runtime. 3623 3624 3625---------------------------------------- 362630 September 2015. Summary of changes for version 20150930: 3627 36281) ACPICA kernel-resident subsystem: 3629 3630Debugger: Implemented several changes and bug fixes to assist support for 3631the in-kernel version of the AML debugger. Lv Zheng. 3632- Fix the "predefined" command for in-kernel debugger. 3633- Do not enter debug command loop for the help and version commands. 3634- Disallow "execute" command during execution/single-step of a method. 3635 3636Interpreter: Updated runtime typechecking for all operators that have 3637target operands. The operand is resolved and validated that it is legal. 3638For example, the target cannot be a non-data object such as a Device, 3639Mutex, ThermalZone, etc., as per the ACPI specification. 3640 3641Debugger: Fixed the double-mutex user I/O handshake to work when local 3642deadlock detection is enabled. 3643 3644Debugger: limited display of method locals and arguments (LocalX and 3645ArgX) to only those that have actually been initialized. This prevents 3646lines of extraneous output. 3647 3648Updated the definition of the NFIT table to correct the bit polarity of 3649one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 3650 3651Example Code and Data Size: These are the sizes for the OS-independent 3652acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3653debug version of the code includes the debug output trace mechanism and 3654has a much larger code and data size. 3655 3656 Current Release: 3657 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 3658 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 3659 Previous Release: 3660 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3661 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3662 3663 36642) iASL Compiler/Disassembler and Tools: 3665 3666iASL: Improved the compile-time typechecking for operands of many of the 3667ASL operators: 3668 3669-- Added an option to disable compiler operand/operator typechecking (- 3670ot). 3671 3672-- For the following operators, the TermArg operands are now validated 3673when possible to be Integer data objects: BankField, OperationRegion, 3674DataTableRegion, Buffer, and Package. 3675 3676-- Store (Source, Target): Both the source and target operands are 3677resolved and checked that the operands are both legal. For example, 3678neither operand can be a non-data object such as a Device, Mutex, 3679ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 3680operator can be used to store an object to any type of target object. 3681 3682-- Store (Source, Target): If the source is a Package object, the target 3683must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 3684is a Package, the source must also be a Package. 3685 3686-- Store (Source, Target): A warning is issued if the source and target 3687resolve to the identical named object. 3688 3689-- Store (Source, <method invocation>): An error is generated for the 3690target method invocation, as this construct is not supported by the AML 3691interpreter. 3692 3693-- For all ASL math and logic operators, the target operand must be a 3694data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 3695includes the function return value also. 3696 3697-- External declarations are also included in the typechecking where 3698possible. External objects defined using the UnknownObj keyword cannot be 3699typechecked, however. 3700 3701iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 3702operator: 3703- Legacy code: Index(PKG1, 3) 3704- New ASL+ code: PKG1[3] 3705This completes the ACPI 6.0 ASL+ support as it was the only operator not 3706supported. 3707 3708iASL: Fixed the file suffix for the preprocessor output file (.i). Two 3709spaces were inadvertently appended to the filename, causing file access 3710and deletion problems on some systems. 3711 3712ASL Test Suite (ASLTS): Updated the master makefile to generate all 3713possible compiler output files when building the test suite -- thus 3714exercising these features of the compiler. These files are automatically 3715deleted when the test suite exits. 3716 3717 3718---------------------------------------- 371918 August 2015. Summary of changes for version 20150818: 3720 37211) ACPICA kernel-resident subsystem: 3722 3723Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 3724Zheng. ACPICA BZ 1186. 3725 3726Completed development to ensure that the ACPICA Disassembler and Debugger 3727are fully standalone components of ACPICA. Removed cross-component 3728dependences. Lv Zheng. 3729 3730The max-number-of-AML-loops is now runtime configurable (previously was 3731compile-time only). This is essentially a loop timeout to force-abort 3732infinite AML loops. ACPCIA BZ 1192. 3733 3734Debugger: Cleanup output to dump ACPI names and namepaths without any 3735trailing underscores. Lv Zheng. ACPICA BZ 1135. 3736 3737Removed unnecessary conditional compilations across the Debugger and 3738Disassembler components where entire modules could be left uncompiled. 3739 3740The aapits test is deprecated and has been removed from the ACPICA git 3741tree. The test has never been completed and has not been maintained, thus 3742becoming rather useless. ACPICA BZ 1015, 794. 3743 3744A batch of small changes to close bugzilla and other reports: 3745- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 3746- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 3747- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 3748- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 3749Moore. 3750- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 3751ACPICA BZ 1184. 3752- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 3753operators. 3754- Debugger: Split debugger initialization/termination interfaces. Lv 3755Zheng. 3756- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 3757identification. 3758- AcpiExec: Add debug message during _REG method phase during table 3759load/init. 3760- AcpiNames: Fix a regression where some output was missing and no longer 3761emitted. 3762- Debugger: General cleanup and simplification. Lv Zheng. 3763- Disassembler: Cleanup use of several global option variables. Lv Zheng. 3764 3765Example Code and Data Size: These are the sizes for the OS-independent 3766acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3767debug version of the code includes the debug output trace mechanism and 3768has a much larger code and data size. 3769 3770 Current Release: 3771 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 3772 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 3773 Previous Release: 3774 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 3775 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 3776 3777 37782) iASL Compiler/Disassembler and Tools: 3779 3780AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 3781were not handled properly and caused load errors. Now, properly invoke 3782and use the ACPICA auto-reallocate mechanism for ACPI table data 3783structures. ACPICA BZ 1188 3784 3785AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 3786BZ 1190. 3787 3788AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 3789AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 3790executed during initialization. ACPICA BZ 1187, 1189. 3791 3792iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 3793that corresponds to each disassembled ASL statement, to simplify 3794debugging. ACPICA BZ 1191. 3795 3796Debugger: Add option to the "objects" command to display a summary of the 3797current namespace objects (Object type and count). This is displayed if 3798the command is entered with no arguments. 3799 3800AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 3801 3802 3803---------------------------------------- 380417 July 2015. Summary of changes for version 20150717: 3805 38061) ACPICA kernel-resident subsystem: 3807 3808Improved the partitioning between the Debugger and Disassembler 3809components. This allows the Debugger to be used standalone within kernel 3810code without the Disassembler (which is used for single stepping also). 3811This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 3812 3813Debugger: Implemented a new command to trace the execution of control 3814methods (Trace). This is especially useful for the in-kernel version of 3815the debugger when file I/O may not be available for method trace output. 3816See the ACPICA reference for more information. Lv Zheng. 3817 3818Moved all C library prototypes (used for the local versions of these 3819functions when requested) to a new header, acclib.h 3820Cleaned up the use of non-ANSI C library functions. These functions are 3821implemented locally in ACPICA. Moved all such functions to a common 3822source file, utnonansi.c 3823 3824Debugger: Fixed a problem with the "!!" command (get last command 3825executed) where the debugger could enter an infinite loop and eventually 3826crash. 3827 3828Removed the use of local macros that were used for some of the standard C 3829library functions to automatically cast input parameters. This mostly 3830affected the is* functions where the input parameter is defined to be an 3831int. This required a few modifications to the main ACPICA source code to 3832provide casting for these functions and eliminate possible compiler 3833warnings for these parameters. 3834 3835Across the source code, added additional status/error checking to resolve 3836issues discovered by static source code analysis tools such as Coverity. 3837 3838Example Code and Data Size: These are the sizes for the OS-independent 3839acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3840debug version of the code includes the debug output trace mechanism and 3841has a much larger code and data size. 3842 3843 Current Release: 3844 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 3845 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 3846 Previous Release: 3847 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 3848 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 3849 3850 38512) iASL Compiler/Disassembler and Tools: 3852 3853iASL: Fixed a regression where the device map file feature no longer 3854worked properly when used in conjunction with the disassembler. It only 3855worked properly with the compiler itself. 3856 3857iASL: Implemented a new warning for method LocalX variables that are set 3858but never used (similar to a C compiler such as gcc). This also applies 3859to ArgX variables that are not defined by the parent method, and are 3860instead (legally) used as local variables. 3861 3862iASL/Preprocessor: Finished the pass-through of line numbers from the 3863preprocessor to the compiler. This ensures that compiler errors/warnings 3864have the correct original line numbers and filenames, regardless of any 3865#include files. 3866 3867iASL/Preprocessor: Fixed a couple of issues with comment handling and the 3868pass-through of comments to the preprocessor output file (which becomes 3869the compiler input file). Also fixed a problem with // comments that 3870appear after a math expression. 3871 3872iASL: Added support for the TCPA server table to the table compiler and 3873template generator. (The client table was already previously supported) 3874 3875iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 3876identify the iASL compiler. 3877 3878Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 3879multiple times. The new names are ACPI_SIGN_NEGATIVE and 3880ACPI_SIGN_POSITIVE. 3881 3882AcpiHelp: Update to expand help messages for the iASL preprocessor 3883directives. 3884 3885 3886---------------------------------------- 388719 June 2015. Summary of changes for version 20150619: 3888 3889Two regressions in version 20150616 have been addressed: 3890 3891Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 3892etc.) This update changes ACPICA to only use the standard headers for 3893functions, or the prototypes for the local versions of the C library 3894functions. Across the source code, this required some additional casts 3895for some Clib invocations for portability. Moved all local prototypes to 3896a new file, acclib.h 3897 3898Fixes several problems with recent changes to the handling of the FACS 3899table that could cause some systems not to boot. 3900 3901 3902---------------------------------------- 390316 June 2015. Summary of changes for version 20150616: 3904 3905 39061) ACPICA kernel-resident subsystem: 3907 3908Across the entire ACPICA source code base, the various macros for the C 3909library functions (such as ACPI_STRLEN, etc.) have been removed and 3910replaced by the standard C library names (strlen, etc.) The original 3911purpose for these macros is no longer applicable. This simplification 3912reduces the number of macros used in the ACPICA source code 3913significantly, improving readability and maintainability. 3914 3915Implemented support for a new ACPI table, the OSDT. This table, the 3916"override" SDT, can be loaded directly by the host OS at boot time. It 3917enables the replacement of existing namespace objects that were installed 3918via the DSDT and/or SSDTs. The primary purpose for this is to replace 3919buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 3920for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 3921Moore. 3922 3923Added support for systems with (improperly) two FACS tables -- a "32-bit" 3924table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 3925X field). This change will support both automatically. There continues to 3926be systems found with this issue. This support requires a change to the 3927AcpiSetFirmwareWakingVector interface. Also, a public global variable has 3928been added to allow the host to select which FACS is desired 3929(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 3930details Lv Zheng. 3931 3932Added a new feature to allow for systems that do not contain an FACS. 3933Although this is already supported on hardware-reduced platforms, the 3934feature has been extended for all platforms. The reasoning is that we do 3935not want to abort the entire ACPICA initialization just because the 3936system is seriously buggy and has no FACS. 3937 3938Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 3939not correctly transcribed from the ACPI specification in ACPICA version 394020150515. 3941 3942Implemented support for the _CLS object in the AcpiGetObjectInfo external 3943interface. 3944 3945Updated the definitions of the TCPA and TPM2 ACPI tables to the more 3946recent TCG ACPI Specification, December 14, 2014. Table disassembler and 3947compiler also updated. Note: The TCPA "server" table is not supported by 3948the disassembler/table-compiler at this time. 3949 3950ACPI 6.0: Added definitions for the new GIC version field in the MADT. 3951 3952Example Code and Data Size: These are the sizes for the OS-independent 3953acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3954debug version of the code includes the debug output trace mechanism and 3955has a much larger code and data size. 3956 3957 Current Release: 3958 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 3959 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 3960 Previous Release: 3961 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 3962 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 3963 3964 39652) iASL Compiler/Disassembler and Tools: 3966 3967Disassembler: Fixed a problem with the new symbolic operator disassembler 3968where incorrect ASL code could be emitted in some cases for the "non- 3969commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 3970ShiftRight. The actual problem cases seem to be rather unusual in common 3971ASL code, however. David Box. 3972 3973Modified the linux version of acpidump to obtain ACPI tables from not 3974just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 3975Zheng. 3976 3977iASL: Fixed a problem where the user preprocessor output file (.i) 3978contained extra data that was not expected. The compiler was using this 3979file as a temporary file and passed through #line directives in order to 3980keep compiler error messages in sync with the input file and line number 3981across multiple include files. The (.i) is no longer a temporary file as 3982the compiler uses a new, different file for the original purpose. 3983 3984iASL: Fixed a problem where comments within the original ASL source code 3985file were not passed through to the preprocessor output file, nor any 3986listing files. 3987 3988iASL: Fixed some issues for the handling of the "#include" preprocessor 3989directive and the similar (but not the same) "Include" ASL operator. 3990 3991iASL: Add support for the new OSDT in both the disassembler and compiler. 3992 3993iASL: Fixed a problem with the constant folding support where a Buffer 3994object could be incorrectly generated (incorrectly formed) during a 3995conversion to a Store() operator. 3996 3997AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 3998description text for the _REV predefined name. _REV now permanently 3999returns 2, as per the ACPI 6.0 specification. 4000 4001Debugger: Enhanced the output of the Debug ASL object for references 4002produced by the Index operator. For Buffers and strings, only output the 4003actual byte pointed to by the index. For packages, only print the single 4004package element decoded by the index. Previously, the entire 4005buffer/string/package was emitted. 4006 4007iASL/Table-compiler: Fixed a regression where the "generic" data types 4008were no longer recognized, causing errors. 4009 4010 4011---------------------------------------- 401215 May 2015. Summary of changes for version 20150515: 4013 4014This release implements most of ACPI 6.0 as described below. 4015 40161) ACPICA kernel-resident subsystem: 4017 4018Implemented runtime argument checking and return value checking for all 4019new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 4020_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 4021 4022Example Code and Data Size: These are the sizes for the OS-independent 4023acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4024debug version of the code includes the debug output trace mechanism and 4025has a much larger code and data size. 4026 4027 Current Release: 4028 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 4029 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 4030 Previous Release: 4031 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4032 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4033 4034 40352) iASL Compiler/Disassembler and Tools: 4036 4037iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 4038names (argument count validation and return value typechecking.) 4039 4040iASL disassembler and table compiler: implemented support for all new 4041ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 4042 4043iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 4044tables: FADT, MADT. 4045 4046iASL preprocessor: Added a new directive to enable inclusion of binary 4047blobs into ASL code. The new directive is #includebuffer. It takes a 4048binary file as input and emits a named ascii buffer object into the ASL 4049code. 4050 4051AcpiHelp: Added support for all new ACPI 6.0 predefined names. 4052 4053AcpiHelp: Added a new option, -d, to display all iASL preprocessor 4054directives. 4055 4056AcpiHelp: Added a new option, -t, to display all known/supported ACPI 4057tables. 4058 4059 4060---------------------------------------- 406110 April 2015. Summary of changes for version 20150410: 4062 4063Reverted a change introduced in version 20150408 that caused 4064a regression in the disassembler where incorrect operator 4065symbols could be emitted. 4066 4067 4068---------------------------------------- 406908 April 2015. Summary of changes for version 20150408: 4070 4071 40721) ACPICA kernel-resident subsystem: 4073 4074Permanently set the return value for the _REV predefined name. It now 4075returns 2 (was 5). This matches other ACPI implementations. _REV will be 4076deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 4077for ACPI 2.0 and later. It should never be used to differentiate or 4078identify operating systems. 4079 4080Added the "Windows 2015" string to the _OSI support. ACPICA will now 4081return TRUE to a query with this string. 4082 4083Fixed several issues with the local version of the printf function. 4084 4085Added the C99 compiler option (-std=c99) to the Unix makefiles. 4086 4087 Current Release: 4088 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 4089 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 4090 Previous Release: 4091 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4092 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4093 4094 40952) iASL Compiler/Disassembler and Tools: 4096 4097iASL: Implemented an enhancement to the constant folding feature to 4098transform the parse tree to a simple Store operation whenever possible: 4099 Add (2, 3, X) ==> is converted to: Store (5, X) 4100 X = 2 + 3 ==> is converted to: Store (5, X) 4101 4102Updated support for the SLIC table (Software Licensing Description Table) 4103in both the Data Table compiler and the disassembler. The SLIC table 4104support now conforms to "Microsoft Software Licensing Tables (SLIC and 4105MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 4106following the ACPI header is now defined to be "Proprietary Data", and as 4107such, can only be entered or displayed as a hex data block. 4108 4109Implemented full support for the MSDM table as described in the document 4110above. Note: The format of MSDM is similar to SLIC. Any MSDM data 4111following the ACPI header is defined to be "Proprietary Data", and can 4112only be entered or displayed as a hex data block. 4113 4114Implemented the -Pn option for the iASL Table Compiler (was only 4115implemented for the ASL compiler). This option disables the iASL 4116preprocessor. 4117 4118Disassembler: For disassembly of Data Tables, added a comment field 4119around the Ascii equivalent data that is emitted as part of the "Raw 4120Table Data" block. This prevents the iASL Preprocessor from possible 4121confusion if/when the table is compiled. 4122 4123Disassembler: Added an option (-df) to force the disassembler to assume 4124that the table being disassembled contains valid AML. This feature is 4125useful for disassembling AML files that contain ACPI signatures other 4126than DSDT or SSDT (such as OEMx or other signatures). 4127 4128Changes for the EFI version of the tools: 41291) Fixed a build error/issue 41302) Fixed a cast warning 4131 4132iASL: Fixed a path issue with the __FILE__ operator by making the 4133directory prefix optional within the internal SplitInputFilename 4134function. 4135 4136Debugger: Removed some unused global variables. 4137 4138Tests: Updated the makefile for proper generation of the AAPITS suite. 4139 4140 4141---------------------------------------- 414204 February 2015. Summary of changes for version 20150204: 4143 4144ACPICA kernel-resident subsystem: 4145 4146Updated all ACPICA copyrights and signons to 2014. Added the 2014 4147copyright to all module headers and signons, including the standard Linux 4148header. This affects virtually every file in the ACPICA core subsystem, 4149iASL compiler, all ACPICA utilities, and the test suites. 4150 4151Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 4152A raw gpe handling mechanism was created to allow better handling of GPE 4153storms that aren't easily managed by the normal handler. The raw handler 4154allows disabling/renabling of the GPE so that interrupt storms can be 4155avoided in cases where events cannot be timely serviced. In this 4156scenario, handlers should use the AcpiSetGpe() API to disable/enable the 4157GPE. This API will leave the reference counts undisturbed, thereby 4158preventing unintentional clearing of the GPE when the intent in only to 4159temporarily disable it. Raw handlers allow enabling and disabling of a 4160GPE by removing GPE register locking. As such, raw handlers much provide 4161their own locks while using GPE API's to protect access to GPE data 4162structures. 4163Lv Zheng 4164 4165Events: Always modify GPE registers under the GPE lock. 4166Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 4167values. Reported as bug by joe.liu@apple.com. 4168 4169Unix makefiles: Separate option to disable optimizations and 4170_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 4171NOOPT disable option and creates a separate flag (NOFORTIFY) for this 4172purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 4173errors when building ACPICA. This allows disabling the option without 4174also having to disable optimazations. 4175David Box 4176 4177 Current Release: 4178 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 4179 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 4180 4181-- 4182-------------------------------------- 418307 November 2014. Summary of changes for version 20141107: 4184 4185This release is available at https://acpica.org/downloads 4186 4187This release introduces and implements language extensions to ASL that 4188provide support for symbolic ("C-style") operators and expressions. These 4189language extensions are known collectively as ASL+. 4190 4191 41921) iASL Compiler/Disassembler and Tools: 4193 4194Disassembler: Fixed a problem with disassembly of the UartSerialBus 4195macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 4196Box. 4197 4198Disassembler: Fixed the Unicode macro support to add escape sequences. 4199All non-printable ASCII values are emitted as escape sequences, as well 4200as the standard escapes for quote and backslash. Ensures that the 4201disassembled macro can be correctly recompiled. 4202 4203iASL: Added Printf/Fprintf macros for formatted output. These macros are 4204translated to existing AML Concatenate and Store operations. Printf 4205writes to the ASL Debug object. Fprintf allows the specification of an 4206ASL name as the target. Only a single format specifier is required, %o, 4207since the AML interpreter dynamically converts objects to the required 4208type. David E. Box. 4209 4210 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 4211 (Concatenate (Concatenate (Concatenate ("", Arg0), 4212 ": Unexpected value for "), Arg1), ", "), Arg2), 4213 " at line "), Arg3), Debug) 4214 4215 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 4216 Arg0, Arg1, Arg2, Arg3) 4217 4218 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 4219 ("", Arg1), ": "), Arg0), " Successful"), STR1) 4220 4221 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 4222 4223iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 4224ASL parse tree before the AML code is generated. This allows blocks of 4225ASL code to be removed in order to help locate and identify problem 4226devices and/or code. David E. Box. 4227 4228AcpiExec: Added support (-fi) for an optional namespace object 4229initialization file. This file specifies initial values for namespace 4230objects as necessary for debugging and testing different ASL code paths 4231that may be taken as a result of BIOS options. 4232 4233 42342) Overview of symbolic operator support for ASL (ASL+) 4235------------------------------------------------------- 4236 4237As an extension to the ASL language, iASL implements support for symbolic 4238(C-style) operators for math and logical expressions. This can greatly 4239simplify ASL code as well as improve both readability and 4240maintainability. These language extensions can exist concurrently with 4241all legacy ASL code and expressions. 4242 4243The symbolic extensions are 100% compatible with existing AML 4244interpreters, since no new AML opcodes are created. To implement the 4245extensions, the iASL compiler transforms the symbolic expressions into 4246the legacy ASL/AML equivalents at compile time. 4247 4248Full symbolic expressions are supported, along with the standard C 4249precedence and associativity rules. 4250 4251Full disassembler support for the symbolic expressions is provided, and 4252creates an automatic migration path for existing ASL code to ASL+ code 4253via the disassembly process. By default, the disassembler now emits ASL+ 4254code with symbolic expressions. An option (-dl) is provided to force the 4255disassembler to emit legacy ASL code if desired. 4256 4257Below is the complete list of the currently supported symbolic operators 4258with examples. See the iASL User Guide for additional information. 4259 4260 4261ASL+ Syntax Legacy ASL Equivalent 4262----------- --------------------- 4263 4264 // Math operators 4265 4266Z = X + Y Add (X, Y, Z) 4267Z = X - Y Subtract (X, Y, Z) 4268Z = X * Y Multiply (X, Y, Z) 4269Z = X / Y Divide (X, Y, , Z) 4270Z = X % Y Mod (X, Y, Z) 4271Z = X << Y ShiftLeft (X, Y, Z) 4272Z = X >> Y ShiftRight (X, Y, Z) 4273Z = X & Y And (X, Y, Z) 4274Z = X | Y Or (X, Y, Z) 4275Z = X ^ Y Xor (X, Y, Z) 4276Z = ~X Not (X, Z) 4277X++ Increment (X) 4278X-- Decrement (X) 4279 4280 // Logical operators 4281 4282(X == Y) LEqual (X, Y) 4283(X != Y) LNotEqual (X, Y) 4284(X < Y) LLess (X, Y) 4285(X > Y) LGreater (X, Y) 4286(X <= Y) LLessEqual (X, Y) 4287(X >= Y) LGreaterEqual (X, Y) 4288(X && Y) LAnd (X, Y) 4289(X || Y) LOr (X, Y) 4290(!X) LNot (X) 4291 4292 // Assignment and compound assignment operations 4293 4294X = Y Store (Y, X) 4295X += Y Add (X, Y, X) 4296X -= Y Subtract (X, Y, X) 4297X *= Y Multiply (X, Y, X) 4298X /= Y Divide (X, Y, , X) 4299X %= Y Mod (X, Y, X) 4300X <<= Y ShiftLeft (X, Y, X) 4301X >>= Y ShiftRight (X, Y, X) 4302X &= Y And (X, Y, X) 4303X |= Y Or (X, Y, X) 4304X ^= Y Xor (X, Y, X) 4305 4306 43073) ASL+ Examples: 4308----------------- 4309 4310Legacy ASL: 4311 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 4312 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 43130x03FB), 4314 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 4315 { 4316 And (MEMB, 0xFFFFFFF0, SRMB) 4317 Store (MEMB, Local2) 4318 Store (PDBM, Local1) 4319 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 4320 Store (SRMB, MEMB) 4321 Or (PDBM, 0x02, PDBM) 4322 } 4323 4324ASL+ version: 4325 If (((R510 & 0x03FB) == 0x02E0) || 4326 ((R520 & 0x03FB) == 0x02E0) || 4327 ((R530 & 0x03FB) == 0x02E0) || 4328 ((R540 & 0x03FB) == 0x02E0)) 4329 { 4330 SRMB = (MEMB & 0xFFFFFFF0) 4331 Local2 = MEMB 4332 Local1 = PDBM 4333 PDBM &= 0xFFFFFFFFFFFFFFF9 4334 MEMB = SRMB 4335 PDBM |= 0x02 4336 } 4337 4338Legacy ASL: 4339 Store (0x1234, Local1) 4340 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 4341 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 4342 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 4343 Store (Index (PKG1, 0x03), Local6) 4344 Store (Add (Local3, Local2), Debug) 4345 Add (Local1, 0x0F, Local2) 4346 Add (Local1, Multiply (Local2, Local3), Local2) 4347 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 4348 4349ASL+ version: 4350 Local1 = 0x1234 4351 Local3 = (((Local1 + TEST) + 0x20) * Local2) 4352 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 4353 Local3 = (Local1 + (TEST + (0x20 * Local2))) 4354 Local6 = Index (PKG1, 0x03) 4355 Debug = (Local3 + Local2) 4356 Local2 = (Local1 + 0x0F) 4357 Local2 = (Local1 + (Local2 * Local3)) 4358 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 4359 4360 4361---------------------------------------- 436226 September 2014. Summary of changes for version 20140926: 4363 43641) ACPICA kernel-resident subsystem: 4365 4366Updated the GPIO operation region handler interface (GeneralPurposeIo). 4367In order to support GPIO Connection objects with multiple pins, along 4368with the related Field objects, the following changes to the interface 4369have been made: The Address is now defined to be the offset in bits of 4370the field unit from the previous invocation of a Connection. It can be 4371viewed as a "Pin Number Index" into the connection resource descriptor. 4372The BitWidth is the exact bit width of the field. It is usually one bit, 4373but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 4374additional information and examples. 4375 4376GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 4377corresponding _Lxx/_Exx methods are disabled (they may have been enabled 4378by the firmware), so that they cannot fire until they are enabled via 4379AcpiUpdateAllGpes. Rafael J. Wysocki. 4380 4381Added a new return flag for the Event/GPE status interfaces -- 4382AcpiGetEventStatus and AcpiGetGpeStatus. The new 4383ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 4384GPE currently has a handler associated with it, and can thus actually 4385affect the system. Lv Zheng. 4386 4387Example Code and Data Size: These are the sizes for the OS-independent 4388acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4389debug version of the code includes the debug output trace mechanism and 4390has a much larger code and data size. 4391 4392 Current Release: 4393 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 4394 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 4395 Previous Release: 4396 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4397 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4398 43992) iASL Compiler/Disassembler and Tools: 4400 4401iASL: Fixed a memory allocation/free regression introduced in 20140828 4402that could cause the compiler to crash. This was introduced inadvertently 4403during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 44041113. 4405 4406iASL: Removed two error messages that have been found to create false 4407positives, until they can be fixed and fully validated (ACPICA BZ 1112): 44081) Illegal forward reference within a method 44092) Illegal reference across two methods 4410 4411iASL: Implemented a new option (-lm) to create a hardware mapping file 4412that summarizes all GPIO, I2C, SPI, and UART connections. This option 4413works for both the compiler and disassembler. See the iASL compiler user 4414guide for additional information and examples (section 6.4.6). 4415 4416AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 4417version 2. This corrects the AE_BAD_HEADER exception seen on systems with 4418a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 4419 4420AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 4421unless STDIN is actually a terminal. Assists with batch-mode processing. 4422ACPICA BZ 1114. 4423 4424Disassembler/AcpiHelp: Added another large group of recognized _HID 4425values. 4426 4427 4428---------------------------------------- 442928 August 2014. Summary of changes for version 20140828: 4430 44311) ACPICA kernel-resident subsystem: 4432 4433Fixed a problem related to the internal use of the Timer() operator where 4434a 64-bit divide could cause an attempted link to a double-precision math 4435library. This divide is not actually necessary, so the code was 4436restructured to eliminate it. Lv Zheng. 4437 4438ACPI 5.1: Added support for the runtime validation of the _DSD package 4439(similar to the iASL support). 4440 4441ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 4442SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 4443 4444Example Code and Data Size: These are the sizes for the OS-independent 4445acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4446debug version of the code includes the debug output trace mechanism and 4447has a much larger code and data size. 4448 4449 Current Release: 4450 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 4451 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 4452 Previous Release: 4453 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 4454 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4455 44562) iASL Compiler/Disassembler and Tools: 4457 4458AcpiExec: Fixed a problem on unix systems where the original terminal 4459state was not always properly restored upon exit. Seen when using the -v 4460option. ACPICA BZ 1104. 4461 4462iASL: Fixed a problem with the validation of the ranges/length within the 4463Memory24 resource descriptor. There was a boundary condition when the 4464range was equal to the (length -1) caused by the fact that these values 4465are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 4466 4467Disassembler: Fixed a problem with the GpioInt descriptor interrupt 4468polarity 4469flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 4470is 4471now supported properly. 4472 4473ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 4474in the disassembler, data table compiler, and table template generator. 4475 4476iASL: Added a requirement for Device() objects that one of either a _HID 4477or _ADR must exist within the scope of a Device, as per the ACPI 4478specification. Remove a similar requirement that was incorrectly in place 4479for the _DSD object. 4480 4481iASL: Added error detection for illegal named references within control 4482methods that would cause runtime failures. Now trapped as errors are: 1) 4483References to objects within a non-parent control method. 2) Forward 4484references (within a method) -- for control methods, AML interpreters use 4485a one-pass parse of control methods. ACPICA BZ 1008. 4486 4487iASL: Added error checking for dependencies related to the _PSx power 4488methods. ACPICA BZ 1029. 44891) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 4490_PS3. 44912) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 4492scope. 4493 4494iASL and table compiler: Cleanup miscellaneous memory leaks by fully 4495deploying the existing object and string caches and adding new caches for 4496the table compiler. 4497 4498iASL: Split the huge parser source file into multiple subfiles to improve 4499manageability. Generation now requires the M4 macro preprocessor, which 4500is part of the Bison distribution on both unix and windows platforms. 4501 4502AcpiSrc: Fixed and removed all extraneous warnings generated during 4503entire ACPICA source code scan and/or conversion. 4504 4505 4506---------------------------------------- 4507 450824 July 2014. Summary of changes for version 20140724: 4509 4510The ACPI 5.1 specification has been released and is available at: 4511http://uefi.org/specs/access 4512 4513 45140) ACPI 5.1 support in ACPICA: 4515 4516ACPI 5.1 is fully supported in ACPICA as of this release. 4517 4518New predefined names. Support includes iASL and runtime ACPICA 4519validation. 4520 _CCA (Cache Coherency Attribute). 4521 _DSD (Device-Specific Data). David Box. 4522 4523Modifications to existing ACPI tables. Support includes headers, iASL 4524Data Table compiler, disassembler, and the template generator. 4525 FADT - New fields and flags. Graeme Gregory. 4526 GTDT - One new subtable and new fields. Tomasz Nowicki. 4527 MADT - Two new subtables. Tomasz Nowicki. 4528 PCCT - One new subtable. 4529 4530Miscellaneous. 4531 New notification type for System Resource Affinity change events. 4532 4533 45341) ACPICA kernel-resident subsystem: 4535 4536Fixed a regression introduced in 20140627 where a fault can happen during 4537the deletion of Alias AML namespace objects. The problem affected both 4538the core ACPICA and the ACPICA tools including iASL and AcpiExec. 4539 4540Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 4541simple mechanism to enable wake GPEs that have no associated handler or 4542control method. Rafael Wysocki. 4543 4544Updated the AcpiEnableGpe interface to disallow the enable if there is no 4545handler or control method associated with the particular GPE. This will 4546help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 4547 4548Updated GPE handling and dispatch by disabling the GPE before clearing 4549the status bit for edge-triggered GPEs. Lv Zheng. 4550 4551Added Timer() support to the AML Debug object. The current timer value is 4552now displayed with each invocation of (Store to) the debug object to 4553enable simple generation of execution times for AML code (method 4554execution for example.) ACPICA BZ 1093. 4555 4556Example Code and Data Size: These are the sizes for the OS-independent 4557acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4558debug version of the code includes the debug output trace mechanism and 4559has a much larger code and data size. 4560 4561 Current Release: 4562 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 4563 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 4564 Previous Release: 4565 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4566 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4567 4568 45692) iASL Compiler/Disassembler and Tools: 4570 4571Fixed an issue with the recently added local printf implementation, 4572concerning width/precision specifiers that could cause incorrect output. 4573Lv Zheng. ACPICA BZ 1094. 4574 4575Disassembler: Added support to detect buffers that contain UUIDs and 4576disassemble them to an invocation of the ToUUID operator. Also emit 4577commented descriptions of known ACPI-related UUIDs. 4578 4579AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 4580-u. Adds three new files. 4581 4582iASL: Update table compiler and disassembler for DMAR table changes that 4583were introduced in September 2013. With assistance by David Woodhouse. 4584 4585---------------------------------------- 458627 June 2014. Summary of changes for version 20140627: 4587 45881) ACPICA kernel-resident subsystem: 4589 4590Formatted Output: Implemented local versions of standard formatted output 4591utilities such as printf, etc. Over time, it has been discovered that 4592there are in fact many portability issues with printf, and the addition 4593of this feature will fix/prevent these issues once and for all. Some 4594known issues are summarized below: 4595 45961) Output of 64-bit values is not portable. For example, UINT64 is %ull 4597for the Linux kernel and is %uI64 for some MSVC versions. 45982) Invoking printf consistently in a manner that is portable across both 459932-bit and 64-bit platforms is difficult at best in many situations. 46003) The output format for pointers varies from system to system (leading 4601zeros especially), and leads to inconsistent output from ACPICA across 4602platforms. 46034) Certain platform-specific printf formats may conflict with ACPICA use. 46045) If there is no local C library available, ACPICA now has local support 4605for printf. 4606 4607-- To address these printf issues in a complete manner, ACPICA now 4608directly implements a small subset of printf format specifiers, only 4609those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 4610 4611Implemented support for ACPICA generation within the EFI environment. 4612Initially, the AcpiDump utility is supported in the UEFI shell 4613environment. Lv Zheng. 4614 4615Added a new external interface, AcpiLogError, to improve ACPICA 4616portability. This allows the host to redirect error messages from the 4617ACPICA utilities. Lv Zheng. 4618 4619Added and deployed new OSL file I/O interfaces to improve ACPICA 4620portability: 4621 AcpiOsOpenFile 4622 AcpiOsCloseFile 4623 AcpiOsReadFile 4624 AcpiOsWriteFile 4625 AcpiOsGetFileOffset 4626 AcpiOsSetFileOffset 4627There are C library implementations of these functions in the new file 4628service_layers/oslibcfs.c -- however, the functions can be implemented by 4629the local host in any way necessary. Lv Zheng. 4630 4631Implemented a mechanism to disable/enable ACPI table checksum validation 4632at runtime. This can be useful when loading tables very early during OS 4633initialization when it may not be possible to map the entire table in 4634order to compute the checksum. Lv Zheng. 4635 4636Fixed a buffer allocation issue for the Generic Serial Bus support. 4637Originally, a fixed buffer length was used. This change allows for 4638variable-length buffers based upon the protocol indicated by the field 4639access attributes. Reported by Lan Tianyu. Lv Zheng. 4640 4641Fixed a problem where an object detached from a namespace node was not 4642properly terminated/cleared and could cause a circular list problem if 4643reattached. ACPICA BZ 1063. David Box. 4644 4645Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 4646 4647Fixed a possible memory leak in an error return path within the function 4648AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 4649 4650Example Code and Data Size: These are the sizes for the OS-independent 4651acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4652debug version of the code includes the debug output trace mechanism and 4653has a much larger code and data size. 4654 4655 Current Release: 4656 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 4657 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 4658 Previous Release: 4659 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4660 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4661 4662 46632) iASL Compiler/Disassembler and Tools: 4664 4665Disassembler: Add dump of ASCII equivalent text within a comment at the 4666end of each line of the output for the Buffer() ASL operator. 4667 4668AcpiDump: Miscellaneous changes: 4669 Fixed repetitive table dump in -n mode. 4670 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 4671the ACPI 2.0 GUID fails. 4672 4673iASL: Fixed a problem where the compiler could fault if incorrectly given 4674an acpidump output file as input. ACPICA BZ 1088. David Box. 4675 4676AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 4677they are invoked without any arguments. 4678 4679Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 46801086. Colin Ian King. 4681 4682Disassembler: Cleaned up a block of code that extracts a parent Op 4683object. Added a comment that explains that the parent is guaranteed to be 4684valid in this case. ACPICA BZ 1069. 4685 4686 4687---------------------------------------- 468824 April 2014. Summary of changes for version 20140424: 4689 46901) ACPICA kernel-resident subsystem: 4691 4692Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 4693Some of these tables are known to contain a trailing NULL entry. Lv 4694Zheng. 4695 4696Removed an extraneous error message for the case where there are a large 4697number of system GPEs (> 124). This was the "32-bit FADT register is too 4698long to convert to GAS struct" message, which is irrelevant for GPEs 4699since the GPEx_BLK_LEN fields of the FADT are always used instead of the 4700(limited capacity) GAS bit length. Also, several changes to ensure proper 4701support for GPE numbers > 255, where some "GPE number" fields were 8-bits 4702internally. 4703 4704Implemented and deployed additional configuration support for the public 4705ACPICA external interfaces. Entire classes of interfaces can now be 4706easily modified or configured out, replaced by stubbed inline functions 4707by default. Lv Zheng. 4708 4709Moved all public ACPICA runtime configuration globals to the public 4710ACPICA external interface file for convenience. Also, removed some 4711obsolete/unused globals. See the file acpixf.h. Lv Zheng. 4712 4713Documentation: Added a new section to the ACPICA reference describing the 4714maximum number of GPEs that can be supported by the FADT-defined GPEs in 4715block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 4716reference. 4717 4718Example Code and Data Size: These are the sizes for the OS-independent 4719acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4720debug version of the code includes the debug output trace mechanism and 4721has a much larger code and data size. 4722 4723 Current Release: 4724 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 4725 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 4726 Previous Release: 4727 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 4728 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 4729 4730 47312) iASL Compiler/Disassembler and Tools: 4732 4733iASL and disassembler: Add full support for the LPIT table (Low Power 4734Idle Table). Includes support in the disassembler, data table compiler, 4735and template generator. 4736 4737AcpiDump utility: 47381) Add option to force the use of the RSDT (over the XSDT). 47392) Improve validation of the RSDP signature (use 8 chars instead of 4). 4740 4741iASL: Add check for predefined packages that are too large. For 4742predefined names that contain subpackages, check if each subpackage is 4743too large. (Check for too small already exists.) 4744 4745Debugger: Updated the GPE command (which simulates a GPE by executing the 4746GPE code paths in ACPICA). The GPE device is now optional, and defaults 4747to the GPE 0/1 FADT-defined blocks. 4748 4749Unix application OSL: Update line-editing support. Add additional error 4750checking and take care not to reset terminal attributes on exit if they 4751were never set. This should help guarantee that the terminal is always 4752left in the previous state on program exit. 4753 4754 4755---------------------------------------- 475625 March 2014. Summary of changes for version 20140325: 4757 47581) ACPICA kernel-resident subsystem: 4759 4760Updated the auto-serialize feature for control methods. This feature 4761automatically serializes all methods that create named objects in order 4762to prevent runtime errors. The update adds support to ignore the 4763currently executing AML SyncLevel when invoking such a method, in order 4764to prevent disruption of any existing SyncLevel priorities that may exist 4765in the AML code. Although the use of SyncLevels is relatively rare, this 4766change fixes a regression where an AE_AML_MUTEX_ORDER exception can 4767appear on some machines starting with the 20140214 release. 4768 4769Added a new external interface to allow the host to install ACPI tables 4770very early, before the namespace is even created. AcpiInstallTable gives 4771the host additional flexibility for ACPI table management. Tables can be 4772installed directly by the host as if they had originally appeared in the 4773XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 4774(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 4775with additional internal restructuring and cleanup. See the ACPICA 4776Reference for interface details. Lv Zheng. 4777 4778Added validation of the checksum for all incoming dynamically loaded 4779tables (via external interfaces or via AML Load/LoadTable operators). Lv 4780Zheng. 4781 4782Updated the use of the AcpiOsWaitEventsComplete interface during Notify 4783and GPE handler removal. Restructured calls to eliminate possible race 4784conditions. Lv Zheng. 4785 4786Added a warning for the use/execution of the ASL/AML Unload (table) 4787operator. This will help detect and identify machines that use this 4788operator if and when it is ever used. This operator has never been seen 4789in the field and the usage model and possible side-effects of the drastic 4790runtime action of a full table removal are unknown. 4791 4792Reverted the use of #pragma push/pop which was introduced in the 20140214 4793release. It appears that push and pop are not implemented by enough 4794compilers to make the use of this feature feasible for ACPICA at this 4795time. However, these operators may be deployed in a future ACPICA 4796release. 4797 4798Added the missing EXPORT_SYMBOL macros for the install and remove SCI 4799handler interfaces. 4800 4801Source code generation: 48021) Disabled the use of the "strchr" macro for the gcc-specific 4803generation. For some versions of gcc, this macro can periodically expose 4804a compiler bug which in turn causes compile-time error(s). 48052) Added support for PPC64 compilation. Colin Ian King. 4806 4807Example Code and Data Size: These are the sizes for the OS-independent 4808acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4809debug version of the code includes the debug output trace mechanism and 4810has a much larger code and data size. 4811 4812 Current Release: 4813 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 4814 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 4815 Previous Release: 4816 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 4817 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 4818 4819 48202) iASL Compiler/Disassembler and Tools: 4821 4822Disassembler: Added several new features to improve the readability of 4823the resulting ASL code. Extra information is emitted within comment 4824fields in the ASL code: 48251) Known _HID/_CID values are decoded to descriptive text. 48262) Standard values for the Notify() operator are decoded to descriptive 4827text. 48283) Target operands are expanded to full pathnames (in a comment) when 4829possible. 4830 4831Disassembler: Miscellaneous updates for extern() handling: 48321) Abort compiler if file specified by -fe option does not exist. 48332) Silence unnecessary warnings about argument count mismatches. 48343) Update warning messages concerning unresolved method externals. 48354) Emit "UnknownObj" keyword for externals whose type cannot be 4836determined. 4837 4838AcpiHelp utility: 48391) Added the -a option to display both the ASL syntax and the AML 4840encoding for an input ASL operator. This effectively displays all known 4841information about an ASL operator with one AcpiHelp invocation. 48422) Added substring match support (similar to a wildcard) for the -i 4843(_HID/PNP IDs) option. 4844 4845iASL/Disassembler: Since this tool does not yet support execution on big- 4846endian machines, added detection of endianness and an error message if 4847execution is attempted on big-endian. Support for big-endian within iASL 4848is a feature that is on the ACPICA to-be-done list. 4849 4850AcpiBin utility: 48511) Remove option to extract binary files from an acpidump; this function 4852is made obsolete by the AcpiXtract utility. 48532) General cleanup of open files and allocated buffers. 4854 4855 4856---------------------------------------- 485714 February 2014. Summary of changes for version 20140214: 4858 48591) ACPICA kernel-resident subsystem: 4860 4861Implemented a new mechanism to proactively prevent problems with ill- 4862behaved reentrant control methods that create named ACPI objects. This 4863behavior is illegal as per the ACPI specification, but is nonetheless 4864frequently seen in the field. Previously, this could lead to an 4865AE_ALREADY_EXISTS exception if the method was actually entered by more 4866than one thread. This new mechanism detects such methods at table load 4867time and marks them "serialized" to prevent reentrancy. A new global 4868option, AcpiGbl_AutoSerializeMethods, has been added to disable this 4869feature if desired. This mechanism and global option obsoletes and 4870supersedes the previous AcpiGbl_SerializeAllMethods option. 4871 4872Added the "Windows 2013" string to the _OSI support. ACPICA will now 4873respond TRUE to _OSI queries with this string. It is the stated policy of 4874ACPICA to add new strings to the _OSI support as soon as possible after 4875they are defined. See the full ACPICA _OSI policy which has been added to 4876the utilities/utosi.c file. 4877 4878Hardened/updated the _PRT return value auto-repair code: 48791) Do not abort the repair on a single subpackage failure, continue to 4880check all subpackages. 48812) Add check for the minimum subpackage length (4). 48823) Properly handle extraneous NULL package elements. 4883 4884Added support to avoid the possibility of infinite loops when traversing 4885object linked lists. Never allow an infinite loop, even in the face of 4886corrupted object lists. 4887 4888ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 4889pack(pop) directives to ensure that the ACPICA headers are independent of 4890compiler settings or other host headers. 4891 4892Example Code and Data Size: These are the sizes for the OS-independent 4893acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4894debug version of the code includes the debug output trace mechanism and 4895has a much larger code and data size. 4896 4897 Current Release: 4898 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 4899 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 4900 Previous Release: 4901 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 4902 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 4903 4904 49052) iASL Compiler/Disassembler and Tools: 4906 4907iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 4908first reserved field was incorrectly forced to have a value of zero. This 4909change correctly forces the field to have a value of one. ACPICA BZ 1081. 4910 4911Debugger: Added missing support for the "Extra" and "Data" subobjects 4912when displaying object data. 4913 4914Debugger: Added support to display entire object linked lists when 4915displaying object data. 4916 4917iASL: Removed the obsolete -g option to obtain ACPI tables from the 4918Windows registry. This feature has been superseded by the acpidump 4919utility. 4920 4921 4922---------------------------------------- 492314 January 2014. Summary of changes for version 20140114: 4924 49251) ACPICA kernel-resident subsystem: 4926 4927Updated all ACPICA copyrights and signons to 2014. Added the 2014 4928copyright to all module headers and signons, including the standard Linux 4929header. This affects virtually every file in the ACPICA core subsystem, 4930iASL compiler, all ACPICA utilities, and the test suites. 4931 4932Improved parameter validation for AcpiInstallGpeBlock. Added the 4933following checks: 49341) The incoming device handle refers to type ACPI_TYPE_DEVICE. 49352) There is not already a GPE block attached to the device. 4936Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 4937device. 4938 4939Correctly support "references" in the ACPI_OBJECT. This change fixes the 4940support to allow references (namespace nodes) to be passed as arguments 4941to control methods via the evaluate object interface. This is probably 4942most useful for testing purposes, however. 4943 4944Improved support for 32/64 bit physical addresses in printf()-like 4945output. This change improves the support for physical addresses in printf 4946debug statements and other output on both 32-bit and 64-bit hosts. It 4947consistently outputs the appropriate number of bytes for each host. The 4948%p specifier is unsatisfactory since it does not emit uniform output on 4949all hosts/clib implementations (on some, leading zeros are not supported, 4950leading to difficult-to-read output). 4951 4952Example Code and Data Size: These are the sizes for the OS-independent 4953acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4954debug version of the code includes the debug output trace mechanism and 4955has a much larger code and data size. 4956 4957 Current Release: 4958 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 4959 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 4960 Previous Release: 4961 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 4962 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 4963 4964 49652) iASL Compiler/Disassembler and Tools: 4966 4967iASL: Fix a possible fault when using the Connection() operator. Fixes a 4968problem if the parent Field definition for the Connection operator refers 4969to an operation region that does not exist. ACPICA BZ 1064. 4970 4971AcpiExec: Load of local test tables is now optional. The utility has the 4972capability to load some various tables to test features of ACPICA. 4973However, there are enough of them that the output of the utility became 4974confusing. With this change, only the required local tables are displayed 4975(RSDP, XSDT, etc.) along with the actual tables loaded via the command 4976line specification. This makes the default output simler and easier to 4977understand. The -el command line option restores the original behavior 4978for testing purposes. 4979 4980AcpiExec: Added support for overlapping operation regions. This change 4981expands the simulation of operation regions by supporting regions that 4982overlap within the given address space. Supports SystemMemory and 4983SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 4984 4985AcpiExec: Added region handler support for PCI_Config and EC spaces. This 4986allows AcpiExec to simulate these address spaces, similar to the current 4987support for SystemMemory and SystemIO. 4988 4989Debugger: Added new command to read/write/compare all namespace objects. 4990The command "test objects" will exercise the entire namespace by writing 4991new values to each data object, and ensuring that the write was 4992successful. The original value is then restored and verified. 4993 4994Debugger: Added the "test predefined" command. This change makes this 4995test public and puts it under the new "test" command. The test executes 4996each and every predefined name within the current namespace. 4997 4998 4999---------------------------------------- 500018 December 2013. Summary of changes for version 20131218: 5001 5002Global note: The ACPI 5.0A specification was released this month. There 5003are no changes needed for ACPICA since this release of ACPI is an 5004errata/clarification release. The specification is available at 5005acpi.info. 5006 5007 50081) ACPICA kernel-resident subsystem: 5009 5010Added validation of the XSDT root table if it is present. Some older 5011platforms contain an XSDT that is ill-formed or otherwise invalid (such 5012as containing some or all entries that are NULL pointers). This change 5013adds a new function to validate the XSDT before actually using it. If the 5014XSDT is found to be invalid, ACPICA will now automatically fall back to 5015using the RSDT instead. Original implementation by Zhao Yakui. Ported to 5016ACPICA and enhanced by Lv Zheng and Bob Moore. 5017 5018Added a runtime option to ignore the XSDT and force the use of the RSDT. 5019This change adds a runtime option that will force ACPICA to use the RSDT 5020instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 5021requires that an XSDT be used instead of the RSDT, the XSDT has been 5022found to be corrupt or ill-formed on some machines. Lv Zheng. 5023 5024Added a runtime option to favor 32-bit FADT register addresses over the 502564-bit addresses. This change adds an option to favor 32-bit FADT 5026addresses when there is a conflict between the 32-bit and 64-bit versions 5027of the same register. The default behavior is to use the 64-bit version 5028in accordance with the ACPI specification. This can now be overridden via 5029the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 5030 5031During the change above, the internal "Convert FADT" and "Verify FADT" 5032functions have been merged to simplify the code, making it easier to 5033understand and maintain. ACPICA BZ 933. 5034 5035Improve exception reporting and handling for GPE block installation. 5036Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 5037status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 5038 5039Added helper macros to extract bus/segment numbers from the HEST table. 5040This change adds two macros to extract the encoded bus and segment 5041numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 5042Betty Dall <betty.dall@hp.com> 5043 5044Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 5045by ACPICA. It is not a public macro, so it should have no effect on 5046existing OSV code. Lv Zheng. 5047 5048Example Code and Data Size: These are the sizes for the OS-independent 5049acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5050debug version of the code includes the debug output trace mechanism and 5051has a much larger code and data size. 5052 5053 Current Release: 5054 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 5055 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 5056 Previous Release: 5057 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 5058 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 5059 5060 50612) iASL Compiler/Disassembler and Tools: 5062 5063Disassembler: Improved pathname support for emitted External() 5064statements. This change adds full pathname support for external names 5065that have been resolved internally by the inclusion of additional ACPI 5066tables (via the iASL -e option). Without this change, the disassembler 5067can emit multiple externals for the same object, or it become confused 5068when the Scope() operator is used on an external object. Overall, greatly 5069improves the ability to actually recompile the emitted ASL code when 5070objects a referenced across multiple ACPI tables. Reported by Michael 5071Tsirkin (mst@redhat.com). 5072 5073Tests/ASLTS: Updated functional control suite to execute with no errors. 5074David Box. Fixed several errors related to the testing of the interpreter 5075slack mode. Lv Zheng. 5076 5077iASL: Added support to detect names that are declared within a control 5078method, but are unused (these are temporary names that are only valid 5079during the time the method is executing). A remark is issued for these 5080cases. ACPICA BZ 1022. 5081 5082iASL: Added full support for the DBG2 table. Adds full disassembler, 5083table compiler, and template generator support for the DBG2 table (Debug 5084Port 2 table). 5085 5086iASL: Added full support for the PCCT table, update the table definition. 5087Updates the PCCT table definition in the actbl3.h header and adds table 5088compiler and template generator support. 5089 5090iASL: Added an option to emit only error messages (no warnings/remarks). 5091The -ve option will enable only error messages, warnings and remarks are 5092suppressed. This can simplify debugging when only the errors are 5093important, such as when an ACPI table is disassembled and there are many 5094warnings and remarks -- but only the actual errors are of real interest. 5095 5096Example ACPICA code (source/tools/examples): Updated the example code so 5097that it builds to an actual working program, not just example code. Added 5098ACPI tables and execution of an example control method in the DSDT. Added 5099makefile support for Unix generation. 5100 5101 5102---------------------------------------- 510315 November 2013. Summary of changes for version 20131115: 5104 5105This release is available at https://acpica.org/downloads 5106 5107 51081) ACPICA kernel-resident subsystem: 5109 5110Resource Manager: Fixed loop termination for the "get AML length" 5111function. The loop previously had an error termination on a NULL resource 5112pointer, which can never happen since the loop simply increments a valid 5113resource pointer. This fix changes the loop to terminate with an error on 5114an invalid end-of-buffer condition. The problem can be seen as an 5115infinite loop by callers to AcpiSetCurrentResources with an invalid or 5116corrupted resource descriptor, or a resource descriptor that is missing 5117an END_TAG descriptor. Reported by Dan Carpenter 5118<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 5119 5120Table unload and ACPICA termination: Delete all attached data objects 5121during namespace node deletion. This fix updates namespace node deletion 5122to delete the entire list of attached objects (attached via 5123AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 51241024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 5125 5126ACPICA termination: Added support to delete all objects attached to the 5127root namespace node. This fix deletes any and all objects that have been 5128attached to the root node via AcpiAttachData. Previously, none of these 5129objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 5130 5131Debug output: Do not emit the function nesting level for the in-kernel 5132build. The nesting level is really only useful during a single-thread 5133execution. Therefore, only enable this output for the AcpiExec utility. 5134Also, only emit the thread ID when executing under AcpiExec (Context 5135switches are still always detected and a message is emitted). ACPICA BZ 5136972. 5137 5138Example Code and Data Size: These are the sizes for the OS-independent 5139acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5140debug version of the code includes the debug output trace mechanism and 5141has a much larger code and data size. 5142 5143 Current Release: 5144 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 5145 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 5146 Previous Release: 5147 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 5148 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 5149 5150 51512) iASL Compiler/Disassembler and Tools: 5152 5153AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 5154correct portable POSIX header for terminal control functions. 5155 5156Disassembler: Fixed control method invocation issues related to the use 5157of the CondRefOf() operator. The problem is seen in the disassembly where 5158control method invocations may not be disassembled properly if the 5159control method name has been used previously as an argument to CondRefOf. 5160The solution is to not attempt to emit an external declaration for the 5161CondRefOf target (it is not necessary in the first place). This prevents 5162disassembler object type confusion. ACPICA BZ 988. 5163 5164Unix Makefiles: Added an option to disable compiler optimizations and the 5165_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 5166with optimizations (reportedly, gcc 4.4 for example). This change adds a 5167command line option for make (NOOPT) that disables all compiler 5168optimizations and the _FORTIFY_SOURCE compiler flag. The default 5169optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 51701034. Lv Zheng, Bob Moore. 5171 5172Tests/ASLTS: Added options to specify individual test cases and modes. 5173This allows testers running aslts.sh to optionally specify individual 5174test modes and test cases. Also added an option to disable the forced 5175generation of the ACPICA tools from source if desired. Lv Zheng. 5176 5177---------------------------------------- 517827 September 2013. Summary of changes for version 20130927: 5179 5180This release is available at https://acpica.org/downloads 5181 5182 51831) ACPICA kernel-resident subsystem: 5184 5185Fixed a problem with store operations to reference objects. This change 5186fixes a problem where a Store operation to an ArgX object that contained 5187a 5188reference to a field object did not complete the automatic dereference 5189and 5190then write to the actual field object. Instead, the object type of the 5191field object was inadvertently changed to match the type of the source 5192operand. The new behavior will actually write to the field object (buffer 5193field or field unit), thus matching the correct ACPI-defined behavior. 5194 5195Implemented support to allow the host to redefine individual OSL 5196prototypes. This change enables the host to redefine OSL prototypes found 5197in the acpiosxf.h file. This allows the host to implement OSL interfaces 5198with a macro or inlined function. Further, it allows the host to add any 5199additional required modifiers such as __iomem, __init, __exit, etc., as 5200necessary on a per-interface basis. Enables maximum flexibility for the 5201OSL interfaces. Lv Zheng. 5202 5203Hardcoded the access width for the FADT-defined reset register. The ACPI 5204specification requires the reset register width to be 8 bits. ACPICA now 5205hardcodes the width to 8 and ignores the FADT width value. This provides 5206compatibility with other ACPI implementations that have allowed BIOS code 5207with bad register width values to go unnoticed. Matthew Garett, Bob 5208Moore, 5209Lv Zheng. 5210 5211Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 5212used 5213in the OSL header (acpiosxf). The change modifies the position of this 5214macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 5215build issues if the OSL defines the implementation of the interface to be 5216an inline stub function. Lv Zheng. 5217 5218Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 5219initialization interfaces. This change adds a new macro for the main init 5220and terminate external interfaces in order to support hosts that require 5221additional or different processing for these functions. Changed from 5222ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 5223Zheng, Bob Moore. 5224 5225Cleaned up the memory allocation macros for configurability. In the 5226common 5227case, the ACPI_ALLOCATE and related macros now resolve directly to their 5228respective AcpiOs* OSL interfaces. Two options: 52291) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 5230default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 52312) For AcpiExec (and for debugging), the macros can optionally be 5232resolved 5233to the local ACPICA interfaces that track each allocation (local tracking 5234is used to immediately detect memory leaks). 5235Lv Zheng. 5236 5237Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 5238to predefine this macro to either TRUE or FALSE during the system build. 5239 5240Replaced __FUNCTION_ with __func__ in the gcc-specific header. 5241 5242Example Code and Data Size: These are the sizes for the OS-independent 5243acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5244debug version of the code includes the debug output trace mechanism and 5245has a much larger code and data size. 5246 5247 Current Release: 5248 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 5249 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 5250 Previous Release: 5251 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 5252 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5253 5254 52552) iASL Compiler/Disassembler and Tools: 5256 5257iASL: Implemented wildcard support for the -e option. This simplifies use 5258when there are many SSDTs that must be included to resolve external 5259method 5260declarations. ACPICA BZ 1041. Example: 5261 iasl -e ssdt*.dat -d dsdt.dat 5262 5263AcpiExec: Add history/line-editing for Unix/Linux systems. This change 5264adds a portable module that implements full history and limited line 5265editing for Unix and Linux systems. It does not use readline() due to 5266portability issues. Instead it uses the POSIX termio interface to put the 5267terminal in raw input mode so that the various special keys can be 5268trapped 5269(such as up/down-arrow for history support and left/right-arrow for line 5270editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 5271 5272AcpiXtract: Add support to handle (ignore) "empty" lines containing only 5273one or more spaces. This provides compatible with early or different 5274versions of the AcpiDump utility. ACPICA BZ 1044. 5275 5276AcpiDump: Do not ignore tables that contain only an ACPI table header. 5277Apparently, some BIOSs create SSDTs that contain an ACPI table header but 5278no other data. This change adds support to dump these tables. Any tables 5279shorter than the length of an ACPI table header remain in error (an error 5280message is emitted). Reported by Yi Li. 5281 5282Debugger: Echo actual command along with the "unknown command" message. 5283 5284---------------------------------------- 528523 August 2013. Summary of changes for version 20130823: 5286 52871) ACPICA kernel-resident subsystem: 5288 5289Implemented support for host-installed System Control Interrupt (SCI) 5290handlers. Certain ACPI functionality requires the host to handle raw 5291SCIs. For example, the "SCI Doorbell" that is defined for memory power 5292state support requires the host device driver to handle SCIs to examine 5293if the doorbell has been activated. Multiple SCI handlers can be 5294installed to allow for future expansion. New external interfaces are 5295AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 5296details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 5297 5298Operation region support: Never locally free the handler "context" 5299pointer. This change removes some dangerous code that attempts to free 5300the handler context pointer in some (rare) circumstances. The owner of 5301the handler owns this pointer and the ACPICA code should never touch it. 5302Although not seen to be an issue in any kernel, it did show up as a 5303problem (fault) under AcpiExec. Also, set the internal storage field for 5304the context pointer to zero when the region is deactivated, simply for 5305sanity. David Box. ACPICA BZ 1039. 5306 5307AcpiRead: On error, do not modify the return value target location. If an 5308error happens in the middle of a split 32/32 64-bit I/O operation, do not 5309modify the target of the return value pointer. Makes the code consistent 5310with the rest of ACPICA. Bjorn Helgaas. 5311 5312Example Code and Data Size: These are the sizes for the OS-independent 5313acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5314debug version of the code includes the debug output trace mechanism and 5315has a much larger code and data size. 5316 5317 Current Release: 5318 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 5319 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5320 Previous Release: 5321 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5322 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 5323 5324 53252) iASL Compiler/Disassembler and Tools: 5326 5327AcpiDump: Implemented several new features and fixed some problems: 53281) Added support to dump the RSDP, RSDT, and XSDT tables. 53292) Added support for multiple table instances (SSDT, UEFI). 53303) Added option to dump "customized" (overridden) tables (-c). 53314) Fixed a problem where some table filenames were improperly 5332constructed. 53335) Improved some error messages, removed some unnecessary messages. 5334 5335iASL: Implemented additional support for disassembly of ACPI tables that 5336contain invocations of external control methods. The -fe<file> option 5337allows the import of a file that specifies the external methods along 5338with the required number of arguments for each -- allowing for the 5339correct disassembly of the table. This is a workaround for a limitation 5340of AML code where the disassembler often cannot determine the number of 5341arguments required for an external control method and generates incorrect 5342ASL code. See the iASL reference for details. ACPICA BZ 1030. 5343 5344Debugger: Implemented a new command (paths) that displays the full 5345pathnames (namepaths) and object types of all objects in the namespace. 5346This is an alternative to the namespace command. 5347 5348Debugger: Implemented a new command (sci) that invokes the SCI dispatch 5349mechanism and any installed handlers. 5350 5351iASL: Fixed a possible segfault for "too many parent prefixes" condition. 5352This can occur if there are too many parent prefixes in a namepath (for 5353example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 5354 5355Application OSLs: Set the return value for the PCI read functions. These 5356functions simply return AE_OK, but should set the return value to zero 5357also. This change implements this. ACPICA BZ 1038. 5358 5359Debugger: Prevent possible command line buffer overflow. Increase the 5360size of a couple of the debugger line buffers, and ensure that overflow 5361cannot happen. ACPICA BZ 1037. 5362 5363iASL: Changed to abort immediately on serious errors during the parsing 5364phase. Due to the nature of ASL, there is no point in attempting to 5365compile these types of errors, and they typically end up causing a 5366cascade of hundreds of errors which obscure the original problem. 5367 5368---------------------------------------- 536925 July 2013. Summary of changes for version 20130725: 5370 53711) ACPICA kernel-resident subsystem: 5372 5373Fixed a problem with the DerefOf operator where references to FieldUnits 5374and BufferFields incorrectly returned the parent object, not the actual 5375value of the object. After this change, a dereference of a FieldUnit 5376reference results in a read operation on the field to get the value, and 5377likewise, the appropriate BufferField value is extracted from the target 5378buffer. 5379 5380Fixed a problem where the _WAK method could cause a fault under these 5381circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 5382method returned no value. The problem is rarely seen because most kernels 5383run ACPICA in slack mode. 5384 5385For the DerefOf operator, a fatal error now results if an attempt is made 5386to dereference a reference (created by the Index operator) to a NULL 5387package element. Provides compatibility with other ACPI implementations, 5388and this behavior will be added to a future version of the ACPI 5389specification. 5390 5391The ACPI Power Management Timer (defined in the FADT) is now optional. 5392This provides compatibility with other ACPI implementations and will 5393appear in the next version of the ACPI specification. If there is no PM 5394Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 5395zero in the FADT indicates no PM timer. 5396 5397Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 5398allows the host to globally enable/disable all vendor strings, all 5399feature strings, or both. Intended to be primarily used for debugging 5400purposes only. Lv Zheng. 5401 5402Expose the collected _OSI data to the host via a global variable. This 5403data tracks the highest level vendor ID that has been invoked by the BIOS 5404so that the host (and potentially ACPICA itself) can change behaviors 5405based upon the age of the BIOS. 5406 5407Example Code and Data Size: These are the sizes for the OS-independent 5408acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5409debug version of the code includes the debug output trace mechanism and 5410has a much larger code and data size. 5411 5412 Current Release: 5413 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 5414 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 5415 Previous Release: 5416 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5417 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5418 5419 54202) iASL Compiler/Disassembler and Tools: 5421 5422iASL: Created the following enhancements for the -so option (create 5423offset table): 54241)Add offsets for the last nameseg in each namepath for every supported 5425object type 54262)Add support for Processor, Device, Thermal Zone, and Scope objects 54273)Add the actual AML opcode for the parent object of every supported 5428object type 54294)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 5430 5431Disassembler: Emit all unresolved external symbols in a single block. 5432These are external references to control methods that could not be 5433resolved, and thus, the disassembler had to make a guess at the number of 5434arguments to parse. 5435 5436iASL: The argument to the -T option (create table template) is now 5437optional. If not specified, the default table is a DSDT, typically the 5438most common case. 5439 5440---------------------------------------- 544126 June 2013. Summary of changes for version 20130626: 5442 54431) ACPICA kernel-resident subsystem: 5444 5445Fixed an issue with runtime repair of the _CST object. Null or invalid 5446elements were not always removed properly. Lv Zheng. 5447 5448Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 5449FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 5450the maximum number of GPEs is 1016. Use of multiple GPE block devices 5451makes the system-wide number of GPEs essentially unlimited. 5452 5453Example Code and Data Size: These are the sizes for the OS-independent 5454acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5455debug version of the code includes the debug output trace mechanism and 5456has a much larger code and data size. 5457 5458 Current Release: 5459 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 5460 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 5461 Previous Release: 5462 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5463 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5464 5465 54662) iASL Compiler/Disassembler and Tools: 5467 5468Portable AcpiDump: Implemented full support for the Linux and FreeBSD 5469hosts. Now supports Linux, FreeBSD, and Windows. 5470 5471Disassembler: Added some missing types for the HEST and EINJ tables: "Set 5472Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 5473 5474iASL/Preprocessor: Implemented full support for nested 5475#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 5476 5477Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 5478max. The original purpose of this constraint was to limit the amount of 5479debug output. However, the string function in question (UtPrintString) is 5480now used for the disassembler also, where 256 bytes is insufficient. 5481Reported by RehabMan@GitHub. 5482 5483iASL/DataTables: Fixed some problems and issues with compilation of DMAR 5484tables. ACPICA BZ 999. Lv Zheng. 5485 5486iASL: Fixed a couple of error exit issues that could result in a "Could 5487not delete <file>" message during ASL compilation. 5488 5489AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 5490the actual signatures for these tables are "FACP" and "APIC", 5491respectively. 5492 5493AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 5494tables are allowed to have multiple instances. 5495 5496---------------------------------------- 549717 May 2013. Summary of changes for version 20130517: 5498 54991) ACPICA kernel-resident subsystem: 5500 5501Fixed a regression introduced in version 20130328 for _INI methods. This 5502change fixes a problem introduced in 20130328 where _INI methods are no 5503longer executed properly because of a memory block that was not 5504initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 5505<tomasz.nowicki@linaro.org>. 5506 5507Fixed a possible problem with the new extended sleep registers in the 5508ACPI 55095.0 FADT. Do not use these registers (even if populated) unless the HW- 5510reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 55111020. Lv Zheng. 5512 5513Implemented return value repair code for _CST predefined objects: Sort 5514the 5515list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 5516 5517Implemented a debug-only option to disable loading of SSDTs from the 5518RSDT/XSDT during ACPICA initialization. This can be useful for debugging 5519ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 5520acglobal.h - ACPICA BZ 1005. Lv Zheng. 5521 5522Fixed some issues in the ACPICA initialization and termination code: 5523Tomasz Nowicki <tomasz.nowicki@linaro.org> 55241) Clear events initialized flag upon event component termination. ACPICA 5525BZ 1013. 55262) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 55273) Delete global lock pending lock during termination. ACPICA BZ 1012. 55284) Clear debug buffer global on termination to prevent possible multiple 5529delete. ACPICA BZ 1010. 5530 5531Standardized all switch() blocks across the entire source base. After 5532many 5533years, different formatting for switch() had crept in. This change makes 5534the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 5535 5536Split some files to enhance ACPICA modularity and configurability: 55371) Split buffer dump routines into utilities/utbuffer.c 55382) Split internal error message routines into utilities/uterror.c 55393) Split table print utilities into tables/tbprint.c 55404) Split iASL command-line option processing into asloptions.c 5541 5542Makefile enhancements: 55431) Support for all new files above. 55442) Abort make on errors from any subcomponent. Chao Guan. 55453) Add build support for Apple Mac OS X. Liang Qi. 5546 5547Example Code and Data Size: These are the sizes for the OS-independent 5548acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5549debug version of the code includes the debug output trace mechanism and 5550has a much larger code and data size. 5551 5552 Current Release: 5553 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 5554 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 5555 Previous Release: 5556 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5557 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5558 5559 55602) iASL Compiler/Disassembler and Tools: 5561 5562New utility: Implemented an easily portable version of the acpidump 5563utility to extract ACPI tables from the system (or a file) in an ASCII 5564hex 5565dump format. The top-level code implements the various command line 5566options, file I/O, and table dump routines. To port to a new host, only 5567three functions need to be implemented to get tables -- since this 5568functionality is OS-dependent. See the tools/acpidump/apmain.c module and 5569the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 55701) The Windows version obtains the ACPI tables from the Registry. 55712) The Linux version is under development. 55723) Other hosts - If an OS-dependent module is submitted, it will be 5573distributed with ACPICA. 5574 5575iASL: Fixed a regression for -D preprocessor option (define symbol). A 5576restructuring/change to the initialization sequence caused this option to 5577no longer work properly. 5578 5579iASL: Implemented a mechanism to disable specific warnings and remarks. 5580Adds a new command line option, "-vw <messageid> as well as "#pragma 5581disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 5582 5583iASL: Fix for too-strict package object validation. The package object 5584validation for return values from the predefined names is a bit too 5585strict, it does not allow names references within the package (which will 5586be resolved at runtime.) These types of references cannot be validated at 5587compile time. This change ignores named references within package objects 5588for names that return or define static packages. 5589 5590Debugger: Fixed the 80-character command line limitation for the History 5591command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 5592 5593iASL: Added control method and package support for the -so option 5594(generates AML offset table for BIOS support.) 5595 5596iASL: issue a remark if a non-serialized method creates named objects. If 5597a thread blocks within the method for any reason, and another thread 5598enters the method, the method will fail because an attempt will be made 5599to 5600create the same (named) object twice. In this case, issue a remark that 5601the method should be marked serialized. NOTE: may become a warning later. 5602ACPICA BZ 909. 5603 5604---------------------------------------- 560518 April 2013. Summary of changes for version 20130418: 5606 56071) ACPICA kernel-resident subsystem: 5608 5609Fixed a possible buffer overrun during some rare but specific field unit 5610read operations. This overrun can only happen if the DSDT version is 1 -- 5611meaning that all AML integers are 32 bits -- and the field length is 5612between 33 and 55 bits long. During the read, an internal buffer object 5613is 5614created for the field unit because the field is larger than an integer 5615(32 5616bits). However, in this case, the buffer will be incorrectly written 5617beyond the end because the buffer length is less than the internal 5618minimum 5619of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 5620long, but a full 8 bytes will be written. 5621 5622Updated the Embedded Controller "orphan" _REG method support. This refers 5623to _REG methods under the EC device that have no corresponding operation 5624region. This is allowed by the ACPI specification. This update removes a 5625dependency on the existence an ECDT table. It will execute an orphan _REG 5626method as long as the operation region handler for the EC is installed at 5627the EC device node and not the namespace root. Rui Zhang (original 5628update), Bob Moore (update/integrate). 5629 5630Implemented run-time argument typechecking for all predefined ACPI names 5631(_STA, _BIF, etc.) This change performs object typechecking on all 5632incoming arguments for all predefined names executed via 5633AcpiEvaluateObject. This ensures that ACPI-related device drivers are 5634passing correct object types as well as the correct number of arguments 5635(therefore identifying any issues immediately). Also, the ASL/namespace 5636definition of the predefined name is checked against the ACPI 5637specification for the proper argument count. Adds one new file, 5638nsarguments.c 5639 5640Changed an exception code for the ASL UnLoad() operator. Changed the 5641exception code for the case where the input DdbHandle is invalid, from 5642AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 5643 5644Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 5645global makefile. The use of this flag causes compiler errors on earlier 5646versions of GCC, so it has been removed for compatibility. 5647 5648Miscellaneous cleanup: 56491) Removed some unused/obsolete macros 56502) Fixed a possible memory leak in the _OSI support 56513) Removed an unused variable in the predefined name support 56524) Windows OSL: remove obsolete reference to a memory list field 5653 5654Example Code and Data Size: These are the sizes for the OS-independent 5655acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5656debug version of the code includes the debug output trace mechanism and 5657has a much larger code and data size. 5658 5659 Current Release: 5660 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5661 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5662 Previous Release: 5663 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 5664 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 5665 5666 56672) iASL Compiler/Disassembler and Tools: 5668 5669AcpiExec: Added installation of a handler for the SystemCMOS address 5670space. This prevents control method abort if a method accesses this 5671space. 5672 5673AcpiExec: Added support for multiple EC devices, and now install EC 5674operation region handler(s) at the actual EC device instead of the 5675namespace root. This reflects the typical behavior of host operating 5676systems. 5677 5678AcpiExec: Updated to ensure that all operation region handlers are 5679installed before the _REG methods are executed. This prevents a _REG 5680method from aborting if it accesses an address space has no handler. 5681AcpiExec installs a handler for every possible address space. 5682 5683Debugger: Enhanced the "handlers" command to display non-root handlers. 5684This change enhances the handlers command to display handlers associated 5685with individual devices throughout the namespace, in addition to the 5686currently supported display of handlers associated with the root 5687namespace 5688node. 5689 5690ASL Test Suite: Several test suite errors have been identified and 5691resolved, reducing the total error count during execution. Chao Guan. 5692 5693---------------------------------------- 569428 March 2013. Summary of changes for version 20130328: 5695 56961) ACPICA kernel-resident subsystem: 5697 5698Fixed several possible race conditions with the internal object reference 5699counting mechanism. Some of the external ACPICA interfaces update object 5700reference counts without holding the interpreter or namespace lock. This 5701change adds a spinlock to protect reference count updates on the internal 5702ACPICA objects. Reported by and with assistance from Andriy Gapon 5703(avg@FreeBSD.org). 5704 5705FADT support: Removed an extraneous warning for very large GPE register 5706sets. This change removes a size mismatch warning if the legacy length 5707field for a GPE register set is larger than the 64-bit GAS structure can 5708accommodate. GPE register sets can be larger than the 255-bit width 5709limitation of the GAS structure. Linn Crosetto (linn@hp.com). 5710 5711_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 5712return from this interface. Handles a possible timeout case if 5713ACPI_WAIT_FOREVER is modified by the host to be a value less than 5714"forever". Jung-uk Kim. 5715 5716Predefined name support: Add allowed/required argument type information 5717to 5718the master predefined info table. This change adds the infrastructure to 5719enable typechecking on incoming arguments for all predefined 5720methods/objects. It does not actually contain the code that will fully 5721utilize this information, this is still under development. Also condenses 5722some duplicate code for the predefined names into a new module, 5723utilities/utpredef.c 5724 5725Example Code and Data Size: These are the sizes for the OS-independent 5726acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5727debug version of the code includes the debug output trace mechanism and 5728has a much larger code and data size. 5729 5730 Previous Release: 5731 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 5732 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 5733 Current Release: 5734 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 5735 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 5736 5737 57382) iASL Compiler/Disassembler and Tools: 5739 5740iASL: Implemented a new option to simplify the development of ACPI- 5741related 5742BIOS code. Adds support for a new "offset table" output file. The -so 5743option will create a C table containing the AML table offsets of various 5744named objects in the namespace so that BIOS code can modify them easily 5745at 5746boot time. This can simplify BIOS runtime code by eliminating expensive 5747searches for "magic values", enhancing boot times and adding greater 5748reliability. With assistance from Lee Hamel. 5749 5750iASL: Allow additional predefined names to return zero-length packages. 5751Now, all predefined names that are defined by the ACPI specification to 5752return a "variable-length package of packages" are allowed to return a 5753zero length top-level package. This allows the BIOS to tell the host that 5754the requested feature is not supported, and supports existing BIOS/ASL 5755code and practices. 5756 5757iASL: Changed the "result not used" warning to an error. This is the case 5758where an ASL operator is effectively a NOOP because the result of the 5759operation is not stored anywhere. For example: 5760 Add (4, Local0) 5761There is no target (missing 3rd argument), nor is the function return 5762value used. This is potentially a very serious problem -- since the code 5763was probably intended to do something, but for whatever reason, the value 5764was not stored. Therefore, this issue has been upgraded from a warning to 5765an error. 5766 5767AcpiHelp: Added allowable/required argument types to the predefined names 5768info display. This feature utilizes the recent update to the predefined 5769names table (above). 5770 5771---------------------------------------- 577214 February 2013. Summary of changes for version 20130214: 5773 57741) ACPICA Kernel-resident Subsystem: 5775 5776Fixed a possible regression on some hosts: Reinstated the safe return 5777macros (return_ACPI_STATUS, etc.) that ensure that the argument is 5778evaluated only once. Although these macros are not needed for the ACPICA 5779code itself, they are often used by ACPI-related host device drivers 5780where 5781the safe feature may be necessary. 5782 5783Fixed several issues related to the ACPI 5.0 reduced hardware support 5784(SOC): Now ensure that if the platform declares itself as hardware- 5785reduced 5786via the FADT, the following functions become NOOPs (and always return 5787AE_OK) because ACPI is always enabled by definition on these machines: 5788 AcpiEnable 5789 AcpiDisable 5790 AcpiHwGetMode 5791 AcpiHwSetMode 5792 5793Dynamic Object Repair: Implemented additional runtime repairs for 5794predefined name return values. Both of these repairs can simplify code in 5795the related device drivers that invoke these methods: 57961) For the _STR and _MLS names, automatically repair/convert an ASCII 5797string to a Unicode buffer. 57982) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 5799a 5800lone end tag descriptor in the following cases: A Return(0) was executed, 5801a null buffer was returned, or no object at all was returned (non-slack 5802mode only). Adds a new file, nsconvert.c 5803ACPICA BZ 998. Bob Moore, Lv Zheng. 5804 5805Resource Manager: Added additional code to prevent possible infinite 5806loops 5807while traversing corrupted or ill-formed resource template buffers. Check 5808for zero-length resource descriptors in all code that loops through 5809resource templates (the length field is used to index through the 5810template). This change also hardens the external AcpiWalkResources and 5811AcpiWalkResourceBuffer interfaces. 5812 5813Local Cache Manager: Enhanced the main data structure to eliminate an 5814unnecessary mechanism to access the next object in the list. Actually 5815provides a small performance enhancement for hosts that use the local 5816ACPICA cache manager. Jung-uk Kim. 5817 5818Example Code and Data Size: These are the sizes for the OS-independent 5819acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5820debug version of the code includes the debug output trace mechanism and 5821has a much larger code and data size. 5822 5823 Previous Release: 5824 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 5825 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 5826 Current Release: 5827 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 5828 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 5829 5830 58312) iASL Compiler/Disassembler and Tools: 5832 5833iASL/Disassembler: Fixed several issues with the definition of the ACPI 58345.0 RASF table (RAS Feature Table). This change incorporates late changes 5835that were made to the ACPI 5.0 specification. 5836 5837iASL/Disassembler: Added full support for the following new ACPI tables: 5838 1) The MTMR table (MID Timer Table) 5839 2) The VRTC table (Virtual Real Time Clock Table). 5840Includes header file, disassembler, table compiler, and template support 5841for both tables. 5842 5843iASL: Implemented compile-time validation of package objects returned by 5844predefined names. This new feature validates static package objects 5845returned by the various predefined names defined to return packages. Both 5846object types and package lengths are validated, for both parent packages 5847and sub-packages, if any. The code is similar in structure and behavior 5848to 5849the runtime repair mechanism within the AML interpreter and uses the 5850existing predefined name information table. Adds a new file, aslprepkg.c. 5851ACPICA BZ 938. 5852 5853iASL: Implemented auto-detection of binary ACPI tables for disassembly. 5854This feature detects a binary file with a valid ACPI table header and 5855invokes the disassembler automatically. Eliminates the need to 5856specifically invoke the disassembler with the -d option. ACPICA BZ 862. 5857 5858iASL/Disassembler: Added several warnings for the case where there are 5859unresolved control methods during the disassembly. This can potentially 5860cause errors when the output file is compiled, because the disassembler 5861assumes zero method arguments in these cases (it cannot determine the 5862actual number of arguments without resolution/definition of the method). 5863 5864Debugger: Added support to display all resources with a single command. 5865Invocation of the resources command with no arguments will now display 5866all 5867resources within the current namespace. 5868 5869AcpiHelp: Added descriptive text for each ACPICA exception code displayed 5870via the -e option. 5871 5872---------------------------------------- 587317 January 2013. Summary of changes for version 20130117: 5874 58751) ACPICA Kernel-resident Subsystem: 5876 5877Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 5878return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 5879objects to return a package containing one integer, most BIOS code 5880returns 5881two integers and the previous code reflects that. However, we also need 5882to 5883support BIOS code that actually implements to the ACPI spec, and this 5884change reflects this. 5885 5886Fixed two issues with the ACPI_DEBUG_PRINT macros: 58871) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 5888C compilers that require this support. 58892) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 5890ACPI_DEBUG is already used by many of the various hosts. 5891 5892Updated all ACPICA copyrights and signons to 2013. Added the 2013 5893copyright to all module headers and signons, including the standard Linux 5894header. This affects virtually every file in the ACPICA core subsystem, 5895iASL compiler, all ACPICA utilities, and the test suites. 5896 5897Example Code and Data Size: These are the sizes for the OS-independent 5898acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5899debug version of the code includes the debug output trace mechanism and 5900has a much larger code and data size. 5901 5902 Previous Release: 5903 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 5904 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 5905 Current Release: 5906 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 5907 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 5908 5909 59102) iASL Compiler/Disassembler and Tools: 5911 5912Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 5913prevent a possible fault on some hosts. Some C libraries modify the arg 5914pointer parameter to vfprintf making it difficult to call it twice in the 5915AcpiOsVprintf function. Use a local buffer to workaround this issue. This 5916does not affect the Windows OSL since the Win C library does not modify 5917the arg pointer. Chao Guan, Bob Moore. 5918 5919iASL: Fixed a possible infinite loop when the maximum error count is 5920reached. If an output file other than the .AML file is specified (such as 5921a listing file), and the maximum number of errors is reached, do not 5922attempt to flush data to the output file(s) as the compiler is aborting. 5923This can cause an infinite loop as the max error count code essentially 5924keeps calling itself. 5925 5926iASL/Disassembler: Added an option (-in) to ignore NOOP 5927opcodes/operators. 5928Implemented for both the compiler and the disassembler. Often, the NOOP 5929opcode is used as padding for packages that are changed dynamically by 5930the 5931BIOS. When disassembled and recompiled, these NOOPs will cause syntax 5932errors. This option causes the disassembler to ignore all NOOP opcodes 5933(0xA3), and it also causes the compiler to ignore all ASL source code 5934NOOP 5935statements as well. 5936 5937Debugger: Enhanced the Sleep command to execute all sleep states. This 5938change allows Sleep to be invoked with no arguments and causes the 5939debugger to execute all of the sleep states, 0-5, automatically. 5940 5941---------------------------------------- 594220 December 2012. Summary of changes for version 20121220: 5943 59441) ACPICA Kernel-resident Subsystem: 5945 5946Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 5947alternate entry point for AcpiWalkResources and improves the usability of 5948the resource manager by accepting as input a buffer containing the output 5949of either a _CRS, _PRS, or _AEI method. The key functionality is that the 5950input buffer is not deleted by this interface so that it can be used by 5951the host later. See the ACPICA reference for details. 5952 5953Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 5954(DSDT version < 2). The constant will be truncated and this warning 5955reflects that behavior. 5956 5957Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 5958ExtendedInterrupt, and GpioInt descriptors. This change adds support to 5959both get and set the new wake bit in these descriptors, separately from 5960the existing share bit. Reported by Aaron Lu. 5961 5962Interpreter: Fix Store() when an implicit conversion is not possible. For 5963example, in the cases such as a store of a string to an existing package 5964object, implement the store as a CopyObject(). This is a small departure 5965from the ACPI specification which states that the control method should 5966be 5967aborted in this case. However, the ASLTS suite depends on this behavior. 5968 5969Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 5970macros: check if debug output is currently enabled as soon as possible to 5971minimize performance impact if debug is in fact not enabled. 5972 5973Source code restructuring: Cleanup to improve modularity. The following 5974new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 5975psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 5976Associated makefiles and project files have been updated. 5977 5978Changed an exception code for LoadTable operator. For the case where one 5979of the input strings is too long, change the returned exception code from 5980AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 5981 5982Fixed a possible memory leak in dispatcher error path. On error, delete 5983the mutex object created during method mutex creation. Reported by 5984tim.gardner@canonical.com. 5985 5986Example Code and Data Size: These are the sizes for the OS-independent 5987acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5988debug version of the code includes the debug output trace mechanism and 5989has a much larger code and data size. 5990 5991 Previous Release: 5992 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 5993 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 5994 Current Release: 5995 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 5996 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 5997 5998 59992) iASL Compiler/Disassembler and Tools: 6000 6001iASL: Disallow a method call as argument to the ObjectType ASL operator. 6002This change tracks an errata to the ACPI 5.0 document. The AML grammar 6003will not allow the interpreter to differentiate between a method and a 6004method invocation when these are used as an argument to the ObjectType 6005operator. The ACPI specification change is to disallow a method 6006invocation 6007(UserTerm) for the ObjectType operator. 6008 6009Finish support for the TPM2 and CSRT tables in the headers, table 6010compiler, and disassembler. 6011 6012Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 6013always expires immediately if the semaphore is not available. The 6014original 6015code was using a relative-time timeout, but sem_timedwait requires the 6016use 6017of an absolute time. 6018 6019iASL: Added a remark if the Timer() operator is used within a 32-bit 6020table. This operator returns a 64-bit time value that will be truncated 6021within a 32-bit table. 6022 6023iASL Source code restructuring: Cleanup to improve modularity. The 6024following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 6025aslmethod.c, and aslfileio.c. Associated makefiles and project files have 6026been updated. 6027 6028 6029---------------------------------------- 603014 November 2012. Summary of changes for version 20121114: 6031 60321) ACPICA Kernel-resident Subsystem: 6033 6034Implemented a performance enhancement for ACPI/AML Package objects. This 6035change greatly increases the performance of Package objects within the 6036interpreter. It changes the processing of reference counts for packages 6037by 6038optimizing for the most common case where the package sub-objects are 6039either Integers, Strings, or Buffers. Increases the overall performance 6040of 6041the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 60422X.) 6043Chao Guan. ACPICA BZ 943. 6044 6045Implemented and deployed common macros to extract flag bits from resource 6046descriptors. Improves readability and maintainability of the code. Fixes 6047a 6048problem with the UART serial bus descriptor for the number of data bits 6049flags (was incorrectly 2 bits, should be 3). 6050 6051Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 6052of the macros and changed the SETx macros to the style of (destination, 6053source). Also added ACPI_CASTx companion macros. Lv Zheng. 6054 6055Example Code and Data Size: These are the sizes for the OS-independent 6056acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6057debug version of the code includes the debug output trace mechanism and 6058has a much larger code and data size. 6059 6060 Previous Release: 6061 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 6062 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6063 Current Release: 6064 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 6065 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6066 6067 60682) iASL Compiler/Disassembler and Tools: 6069 6070Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 6071adds the ShareAndWake and ExclusiveAndWake flags which were added to the 6072Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 6073 6074Disassembler: Fixed a problem with external declaration generation. Fixes 6075a problem where an incorrect pathname could be generated for an external 6076declaration if the original reference to the object includes leading 6077carats (^). ACPICA BZ 984. 6078 6079Debugger: Completed a major update for the Disassemble<method> command. 6080This command was out-of-date and did not properly disassemble control 6081methods that had any reasonable complexity. This fix brings the command 6082up 6083to the same level as the rest of the disassembler. Adds one new file, 6084dmdeferred.c, which is existing code that is now common with the main 6085disassembler and the debugger disassemble command. ACPICA MZ 978. 6086 6087iASL: Moved the parser entry prototype to avoid a duplicate declaration. 6088Newer versions of Bison emit this prototype, so moved the prototype out 6089of 6090the iASL header to where it is actually used in order to avoid a 6091duplicate 6092declaration. 6093 6094iASL/Tools: Standardized use of the stream I/O functions: 6095 1) Ensure check for I/O error after every fopen/fread/fwrite 6096 2) Ensure proper order of size/count arguments for fread/fwrite 6097 3) Use test of (Actual != Requested) after all fwrite, and most fread 6098 4) Standardize I/O error messages 6099Improves reliability and maintainability of the code. Bob Moore, Lv 6100Zheng. 6101ACPICA BZ 981. 6102 6103Disassembler: Prevent duplicate External() statements. During generation 6104of external statements, detect similar pathnames that are actually 6105duplicates such as these: 6106 External (\ABCD) 6107 External (ABCD) 6108Remove all leading '\' characters from pathnames during the external 6109statement generation so that duplicates will be detected and tossed. 6110ACPICA BZ 985. 6111 6112Tools: Replace low-level I/O with stream I/O functions. Replace 6113open/read/write/close with the stream I/O equivalents 6114fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 6115Moore. 6116 6117AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 6118name header so that AcpiXtract recognizes the output file/table. 6119 6120iASL: Remove obsolete -2 option flag. Originally intended to force the 6121compiler/disassembler into an ACPI 2.0 mode, this was never implemented 6122and the entire concept is now obsolete. 6123 6124---------------------------------------- 612518 October 2012. Summary of changes for version 20121018: 6126 6127 61281) ACPICA Kernel-resident Subsystem: 6129 6130Updated support for the ACPI 5.0 MPST table. Fixes some problems 6131introduced by late changes to the table as it was added to the ACPI 5.0 6132specification. Includes header, disassembler, and data table compiler 6133support as well as a new version of the MPST template. 6134 6135AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 61365.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 6137methods: _HID, _CID, and _UID. 6138 6139Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 6140ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 6141name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 6142names for their various drivers. Affects the AcpiGetObjectInfo external 6143interface, and other internal interfaces as well. 6144 6145Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 6146This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 6147on machines that support non-aligned transfers. Optimizes for this case 6148rather than using a strncpy. With assistance from Zheng Lv. 6149 6150Resource Manager: Small fix for buffer size calculation. Fixed a one byte 6151error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 6152 6153Added a new debug print message for AML mutex objects that are force- 6154released. At control method termination, any currently acquired mutex 6155objects are force-released. Adds a new debug-only message for each one 6156that is released. 6157 6158Audited/updated all ACPICA return macros and the function debug depth 6159counter: 1) Ensure that all functions that use the various TRACE macros 6160also use the appropriate ACPICA return macros. 2) Ensure that all normal 6161return statements surround the return expression (value) with parens to 6162ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 6163Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 6164 6165Global source code changes/maintenance: All extra lines at the start and 6166end of each source file have been removed for consistency. Also, within 6167comments, all new sentences start with a single space instead of a double 6168space, again for consistency across the code base. 6169 6170Example Code and Data Size: These are the sizes for the OS-independent 6171acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6172debug version of the code includes the debug output trace mechanism and 6173has a much larger code and data size. 6174 6175 Previous Release: 6176 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 6177 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 6178 Current Release: 6179 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 6180 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 6181 6182 61832) iASL Compiler/Disassembler and Tools: 6184 6185AcpiExec: Improved the algorithm used for memory leak/corruption 6186detection. Added some intelligence to the code that maintains the global 6187list of allocated memory. The list is now ordered by allocated memory 6188address, significantly improving performance. When running AcpiExec on 6189the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 6190on the platform and/or the environment. Note, this performance 6191enhancement affects the AcpiExec utility only, not the kernel-resident 6192ACPICA code. 6193 6194Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 6195the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 6196incorrect table offset reported for invalid opcodes. Report the original 619732-bit value for bad ACPI_NAMEs (as well as the repaired name.) 6198 6199Disassembler: Enhanced the -vt option to emit the binary table data in 6200hex format to assist with debugging. 6201 6202Fixed a potential filename buffer overflow in osunixdir.c. Increased the 6203size of file structure. Colin Ian King. 6204 6205---------------------------------------- 620613 September 2012. Summary of changes for version 20120913: 6207 6208 62091) ACPICA Kernel-resident Subsystem: 6210 6211ACPI 5.0: Added two new notify types for the Hardware Error Notification 6212Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 6213and 6214MCE(6). 6215 6216Table Manager: Merged/removed duplicate code in the root table resize 6217functions. One function is external, the other is internal. Lv Zheng, 6218ACPICA 6219BZ 846. 6220 6221Makefiles: Completely removed the obsolete "Linux" makefiles under 6222acpica/generate/linux. These makefiles are obsolete and have been 6223replaced 6224by 6225the generic unix makefiles under acpica/generate/unix. 6226 6227Makefiles: Ensure that binary files always copied properly. Minor rule 6228change 6229to ensure that the final binary output files are always copied up to the 6230appropriate binary directory (bin32 or bin64.) 6231 6232Example Code and Data Size: These are the sizes for the OS-independent 6233acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6234debug 6235version of the code includes the debug output trace mechanism and has a 6236much 6237larger code and data size. 6238 6239 Previous Release: 6240 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6241 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6242 Current Release: 6243 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 6244 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 6245 6246 62472) iASL Compiler/Disassembler and Tools: 6248 6249Disassembler: Fixed a possible fault during the disassembly of resource 6250descriptors when a second parse is required because of the invocation of 6251external control methods within the table. With assistance from 6252adq@lidskialf.net. ACPICA BZ 976. 6253 6254iASL: Fixed a namepath optimization problem. An error can occur if the 6255parse 6256node that contains the namepath to be optimized does not have a parent 6257node 6258that is a named object. This change fixes the problem. 6259 6260iASL: Fixed a regression where the AML file is not deleted on errors. The 6261AML 6262output file should be deleted if there are any errors during the 6263compiler. 6264The 6265only exception is if the -f (force output) option is used. ACPICA BZ 974. 6266 6267iASL: Added a feature to automatically increase internal line buffer 6268sizes. 6269Via realloc(), automatically increase the internal line buffer sizes as 6270necessary to support very long source code lines. The current version of 6271the 6272preprocessor requires a buffer long enough to contain full source code 6273lines. 6274This change increases the line buffer(s) if the input lines go beyond the 6275current buffer size. This eliminates errors that occurred when a source 6276code 6277line was longer than the buffer. 6278 6279iASL: Fixed a problem with constant folding in method declarations. The 6280SyncLevel term is a ByteConstExpr, and incorrect code would be generated 6281if a 6282Type3 opcode was used. 6283 6284Debugger: Improved command help support. For incorrect argument count, 6285display 6286full help for the command. For help command itself, allow an argument to 6287specify a command. 6288 6289Test Suites: Several bug fixes for the ASLTS suite reduces the number of 6290errors during execution of the suite. Guan Chao. 6291 6292---------------------------------------- 629316 August 2012. Summary of changes for version 20120816: 6294 6295 62961) ACPICA Kernel-resident Subsystem: 6297 6298Removed all use of the deprecated _GTS and _BFS predefined methods. The 6299_GTS 6300(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 6301deprecated and will probably be removed from the ACPI specification. 6302Windows 6303does not invoke them, and reportedly never will. The final nail in the 6304coffin 6305is that the ACPI specification states that these methods must be run with 6306interrupts off, which is not going to happen in a kernel interpreter. 6307Note: 6308Linux has removed all use of the methods also. It was discovered that 6309invoking these functions caused failures on some machines, probably 6310because 6311they were never tested since Windows does not call them. Affects two 6312external 6313interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 6314ACPICA BZ 969. 6315 6316Implemented support for complex bit-packed buffers returned from the _PLD 6317(Physical Location of Device) predefined method. Adds a new external 6318interface, AcpiDecodePldBuffer that parses the buffer into a more usable 6319C 6320structure. Note: C Bitfields cannot be used for this type of predefined 6321structure since the memory layout of individual bitfields is not defined 6322by 6323the C language. In addition, there are endian concerns where a compiler 6324will 6325change the bitfield ordering based on the machine type. The new ACPICA 6326interface eliminates these issues, and should be called after _PLD is 6327executed. ACPICA BZ 954. 6328 6329Implemented a change to allow a scope change to root (via "Scope (\)") 6330during 6331execution of module-level ASL code (code that is executed at table load 6332time.) Lin Ming. 6333 6334Added the Windows8/Server2012 string for the _OSI method. This change 6335adds 6336a 6337new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 63382012. 6339 6340Added header support for the new ACPI tables DBG2 (Debug Port Table Type 63412) 6342and CSRT (Core System Resource Table). 6343 6344Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 6345names. This simplifies access to the buffers returned by these predefined 6346names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 6347 6348GPE support: Removed an extraneous parameter from the various low-level 6349internal GPE functions. Tang Feng. 6350 6351Removed the linux makefiles from the unix packages. The generate/linux 6352makefiles are obsolete and have been removed from the unix tarball 6353release 6354packages. The replacement makefiles are under generate/unix, and there is 6355a 6356top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 6357 6358Updates for Unix makefiles: 63591) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 63602) Update linker flags (move to end of command line) for AcpiExec 6361utility. 6362Guan Chao. 6363 6364Split ACPICA initialization functions to new file, utxfinit.c. Split from 6365utxface.c to improve modularity and reduce file size. 6366 6367Example Code and Data Size: These are the sizes for the OS-independent 6368acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6369debug version of the code includes the debug output trace mechanism and 6370has a 6371much larger code and data size. 6372 6373 Previous Release: 6374 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6375 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6376 Current Release: 6377 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 6378 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 6379 6380 63812) iASL Compiler/Disassembler and Tools: 6382 6383iASL: Fixed a problem with constant folding for fixed-length constant 6384expressions. The constant-folding code was not being invoked for constant 6385expressions that allow the use of type 3/4/5 opcodes to generate 6386constants 6387for expressions such as ByteConstExpr, WordConstExpr, etc. This could 6388result 6389in the generation of invalid AML bytecode. ACPICA BZ 970. 6390 6391iASL: Fixed a generation issue on newer versions of Bison. Newer versions 6392apparently automatically emit some of the necessary externals. This 6393change 6394handles these versions in order to eliminate generation warnings. 6395 6396Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 6397 6398Disassembler: Add support to decode _PLD buffers. The decoded buffer 6399appears 6400within comments in the output file. 6401 6402Debugger: Fixed a regression with the "Threads" command where 6403AE_BAD_PARAMETER was always returned. 6404 6405---------------------------------------- 640611 July 2012. Summary of changes for version 20120711: 6407 64081) ACPICA Kernel-resident Subsystem: 6409 6410Fixed a possible fault in the return package object repair code. Fixes a 6411problem that can occur when a lone package object is wrapped with an 6412outer 6413package object in order to force conformance to the ACPI specification. 6414Can 6415affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 6416_DLM, 6417_CSD, _PSD, _TSD. 6418 6419Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 6420PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 6421ARB_DIS bit must be implemented in the host-dependent C3 processor power 6422state 6423support. Note, ARB_DIS is obsolete and only applies to older chipsets, 6424both 6425Intel and other vendors. (for Intel: ICH4-M and earlier) 6426 6427This change removes the code to disable/enable bus master arbitration 6428during 6429suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 6430causes 6431resume problems on some machines. The change has been in use for over 6432seven 6433years within Linux. 6434 6435Implemented two new external interfaces to support host-directed dynamic 6436ACPI 6437table load and unload. They are intended to simplify the host 6438implementation 6439of hot-plug support: 6440 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 6441 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 6442table. 6443See the ACPICA reference for additional details. Adds one new file, 6444components/tables/tbxfload.c 6445 6446Implemented and deployed two new interfaces for errors and warnings that 6447are 6448known to be caused by BIOS/firmware issues: 6449 AcpiBiosError: Prints "ACPI Firmware Error" message. 6450 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 6451Deployed these new interfaces in the ACPICA Table Manager code for ACPI 6452table 6453and FADT errors. Additional deployment to be completed as appropriate in 6454the 6455future. The associated conditional macros are ACPI_BIOS_ERROR and 6456ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 6457ACPICA 6458BZ 6459843. 6460 6461Implicit notify support: ensure that no memory allocation occurs within a 6462critical region. This fix moves a memory allocation outside of the time 6463that a 6464spinlock is held. Fixes issues on systems that do not allow this 6465behavior. 6466Jung-uk Kim. 6467 6468Split exception code utilities and tables into a new file, 6469utilities/utexcep.c 6470 6471Example Code and Data Size: These are the sizes for the OS-independent 6472acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6473debug 6474version of the code includes the debug output trace mechanism and has a 6475much 6476larger code and data size. 6477 6478 Previous Release: 6479 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6480 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6481 Current Release: 6482 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 6483 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 6484 6485 64862) iASL Compiler/Disassembler and Tools: 6487 6488iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 6489of 64900. Jung-uk Kim. 6491 6492Debugger: Enhanced the "tables" command to emit additional information 6493about 6494the current set of ACPI tables, including the owner ID and flags decode. 6495 6496Debugger: Reimplemented the "unload" command to use the new 6497AcpiUnloadParentTable external interface. This command was disable 6498previously 6499due to need for an unload interface. 6500 6501AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 6502option 6503will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 6504 6505---------------------------------------- 650620 June 2012. Summary of changes for version 20120620: 6507 6508 65091) ACPICA Kernel-resident Subsystem: 6510 6511Implemented support to expand the "implicit notify" feature to allow 6512multiple 6513devices to be notified by a single GPE. This feature automatically 6514generates a 6515runtime device notification in the absence of a BIOS-provided GPE control 6516method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 6517notify is 6518provided by ACPICA for Windows compatibility, and is a workaround for 6519BIOS 6520AML 6521code errors. See the description of the AcpiSetupGpeForWake interface in 6522the 6523APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 6524 6525Changed some comments and internal function names to simplify and ensure 6526correctness of the Linux code translation. No functional changes. 6527 6528Example Code and Data Size: These are the sizes for the OS-independent 6529acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6530debug 6531version of the code includes the debug output trace mechanism and has a 6532much 6533larger code and data size. 6534 6535 Previous Release: 6536 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6537 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6538 Current Release: 6539 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 6540 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 6541 6542 65432) iASL Compiler/Disassembler and Tools: 6544 6545Disassembler: Added support to emit short, commented descriptions for the 6546ACPI 6547predefined names in order to improve the readability of the disassembled 6548output. ACPICA BZ 959. Changes include: 6549 1) Emit descriptions for all standard predefined names (_INI, _STA, 6550_PRW, 6551etc.) 6552 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 6553 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 6554etc.) 6555 6556AcpiSrc: Fixed several long-standing Linux code translation issues. 6557Argument 6558descriptions in function headers are now translated properly to lower 6559case 6560and 6561underscores. ACPICA BZ 961. Also fixes translation problems such as 6562these: 6563(old -> new) 6564 i_aSL -> iASL 6565 00-7_f -> 00-7F 6566 16_k -> 16K 6567 local_fADT -> local_FADT 6568 execute_oSI -> execute_OSI 6569 6570iASL: Fixed a problem where null bytes were inadvertently emitted into 6571some 6572listing files. 6573 6574iASL: Added the existing debug options to the standard help screen. There 6575are 6576no longer two different help screens. ACPICA BZ 957. 6577 6578AcpiHelp: Fixed some typos in the various predefined name descriptions. 6579Also 6580expand some of the descriptions where appropriate. 6581 6582iASL: Fixed the -ot option (display compile times/statistics). Was not 6583working 6584properly for standard output; only worked for the debug file case. 6585 6586---------------------------------------- 658718 May 2012. Summary of changes for version 20120518: 6588 6589 65901) ACPICA Core Subsystem: 6591 6592Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 6593defined 6594to block until asynchronous events such as notifies and GPEs have 6595completed. 6596Within ACPICA, it is only called before a notify or GPE handler is 6597removed/uninstalled. It also may be useful for the host OS within related 6598drivers such as the Embedded Controller driver. See the ACPICA reference 6599for 6600additional information. ACPICA BZ 868. 6601 6602ACPI Tables: Added a new error message for a possible overflow failure 6603during 6604the conversion of FADT 32-bit legacy register addresses to internal 6605common 660664- 6607bit GAS structure representation. The GAS has a one-byte "bit length" 6608field, 6609thus limiting the register length to 255 bits. ACPICA BZ 953. 6610 6611Example Code and Data Size: These are the sizes for the OS-independent 6612acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6613debug 6614version of the code includes the debug output trace mechanism and has a 6615much 6616larger code and data size. 6617 6618 Previous Release: 6619 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6620 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6621 Current Release: 6622 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 6623 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 6624 6625 66262) iASL Compiler/Disassembler and Tools: 6627 6628iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 6629macro. 6630This keyword was added late in the ACPI 5.0 release cycle and was not 6631implemented until now. 6632 6633Disassembler: Added support for Operation Region externals. Adds missing 6634support for operation regions that are defined in another table, and 6635referenced locally via a Field or BankField ASL operator. Now generates 6636the 6637correct External statement. 6638 6639Disassembler: Several additional fixes for the External() statement 6640generation 6641related to some ASL operators. Also, order the External() statements 6642alphabetically in the disassembler output. Fixes the External() 6643generation 6644for 6645the Create* field, Alias, and Scope operators: 6646 1) Create* buffer field operators - fix type mismatch warning on 6647disassembly 6648 2) Alias - implement missing External support 6649 3) Scope - fix to make sure all necessary externals are emitted. 6650 6651iASL: Improved pathname support. For include files, merge the prefix 6652pathname 6653with the file pathname and eliminate unnecessary components. Convert 6654backslashes in all pathnames to forward slashes, for readability. Include 6655file 6656pathname changes affect both #include and Include() type operators. 6657 6658iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 6659end 6660of a valid line by inserting a newline and then returning the EOF during 6661the 6662next call to GetNextLine. Prevents the line from being ignored due to EOF 6663condition. 6664 6665iASL: Implemented some changes to enhance the IDE support (-vi option.) 6666Error 6667and Warning messages are now correctly recognized for both the source 6668code 6669browser and the global error and warning counts. 6670 6671---------------------------------------- 667220 April 2012. Summary of changes for version 20120420: 6673 6674 66751) ACPICA Core Subsystem: 6676 6677Implemented support for multiple notify handlers. This change adds 6678support 6679to 6680allow multiple system and device notify handlers on Device, Thermal Zone, 6681and 6682Processor objects. This can simplify the host OS notification 6683implementation. 6684Also re-worked and restructured the entire notify support code to 6685simplify 6686handler installation, handler removal, notify event queuing, and notify 6687dispatch to handler(s). Note: there can still only be two global notify 6688handlers - one for system notifies and one for device notifies. There are 6689no 6690changes to the existing handler install/remove interfaces. Lin Ming, Bob 6691Moore, Rafael Wysocki. 6692 6693Fixed a regression in the package repair code where the object reference 6694count was calculated incorrectly. Regression was introduced in the commit 6695"Support to add Package wrappers". 6696 6697Fixed a couple possible memory leaks in the AML parser, in the error 6698recovery 6699path. Jesper Juhl, Lin Ming. 6700 6701Example Code and Data Size: These are the sizes for the OS-independent 6702acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6703debug version of the code includes the debug output trace mechanism and 6704has a 6705much larger code and data size. 6706 6707 Previous Release: 6708 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6709 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6710 Current Release: 6711 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6712 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 6713 6714 67152) iASL Compiler/Disassembler and Tools: 6716 6717iASL: Fixed a problem with the resource descriptor support where the 6718length 6719of the StartDependentFn and StartDependentFnNoPrio descriptors were not 6720included in cumulative descriptor offset, resulting in incorrect values 6721for 6722resource tags within resource descriptors appearing after a 6723StartDependent* 6724descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 6725 6726iASL and Preprocessor: Implemented full support for the #line directive 6727to 6728correctly track original source file line numbers through the .i 6729preprocessor 6730output file - for error and warning messages. 6731 6732iASL: Expand the allowable byte constants for address space IDs. 6733Previously, 6734the allowable range was 0x80-0xFF (user-defined spaces), now the range is 67350x0A-0xFF to allow for custom and new IDs without changing the compiler. 6736 6737iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 6738 6739iASL: Add option to completely disable the preprocessor (-Pn). 6740 6741iASL: Now emit all error/warning messages to standard error (stderr) by 6742default (instead of the previous stdout). 6743 6744ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 6745Update 6746for resource descriptor offset fix above. Update/cleanup error output 6747routines. Enable and send iASL errors/warnings to an error logfile 6748(error.txt). Send all other iASL output to a logfile (compiler.txt). 6749Fixed 6750several extraneous "unrecognized operator" messages. 6751 6752---------------------------------------- 675320 March 2012. Summary of changes for version 20120320: 6754 6755 67561) ACPICA Core Subsystem: 6757 6758Enhanced the sleep/wake interfaces to optionally execute the _GTS method 6759(Going To Sleep) and the _BFS method (Back From Sleep). Windows 6760apparently 6761does not execute these methods, and therefore these methods are often 6762untested. It has been seen on some systems where the execution of these 6763methods causes errors and also prevents the machine from entering S5. It 6764is 6765therefore suggested that host operating systems do not execute these 6766methods 6767by default. In the future, perhaps these methods can be optionally 6768executed 6769based on the age of the system and/or what is the newest version of 6770Windows 6771that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 6772and 6773AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 6774Ming. 6775 6776Fixed a problem where the length of the local/common FADT was set too 6777early. 6778The local FADT table length cannot be set to the common length until the 6779original length has been examined. There is code that checks the table 6780length 6781and sets various fields appropriately. This can affect older machines 6782with 6783early FADT versions. For example, this can cause inadvertent writes to 6784the 6785CST_CNT register. Julian Anastasov. 6786 6787Fixed a mapping issue related to a physical table override. Use the 6788deferred 6789mapping mechanism for tables loaded via the physical override OSL 6790interface. 6791This allows for early mapping before the virtual memory manager is 6792available. 6793Thomas Renninger, Bob Moore. 6794 6795Enhanced the automatic return-object repair code: Repair a common problem 6796with 6797predefined methods that are defined to return a variable-length Package 6798of 6799sub-objects. If there is only one sub-object, some BIOS ASL code 6800mistakenly 6801simply returns the single object instead of a Package with one sub- 6802object. 6803This new support will repair this error by wrapping a Package object 6804around 6805the original object, creating the correct and expected Package with one 6806sub- 6807object. Names that can be repaired in this manner include: _ALR, _CSD, 6808_HPX, 6809_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 6810939. 6811 6812Changed the exception code returned for invalid ACPI paths passed as 6813parameters to external interfaces such as AcpiEvaluateObject. Was 6814AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 6815 6816Example Code and Data Size: These are the sizes for the OS-independent 6817acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6818debug 6819version of the code includes the debug output trace mechanism and has a 6820much 6821larger code and data size. 6822 6823 Previous Release: 6824 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 6825 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6826 Current Release: 6827 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 6828 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6829 6830 68312) iASL Compiler/Disassembler and Tools: 6832 6833iASL: Added the infrastructure and initial implementation of a integrated 6834C- 6835like preprocessor. This will simplify BIOS development process by 6836eliminating 6837the need for a separate preprocessing step during builds. On Windows, it 6838also 6839eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 6840features including full #define() macro support are still under 6841development. 6842These preprocessor directives are supported: 6843 #define 6844 #elif 6845 #else 6846 #endif 6847 #error 6848 #if 6849 #ifdef 6850 #ifndef 6851 #include 6852 #pragma message 6853 #undef 6854 #warning 6855In addition, these new command line options are supported: 6856 -D <symbol> Define symbol for preprocessor use 6857 -li Create preprocessed output file (*.i) 6858 -P Preprocess only and create preprocessor output file (*.i) 6859 6860Table Compiler: Fixed a problem where the equals operator within an 6861expression 6862did not work properly. 6863 6864Updated iASL to use the current versions of Bison/Flex. Updated the 6865Windows 6866project file to invoke these tools from the standard location. ACPICA BZ 6867904. 6868Versions supported: 6869 Flex for Windows: V2.5.4 6870 Bison for Windows: V2.4.1 6871 6872---------------------------------------- 687315 February 2012. Summary of changes for version 20120215: 6874 6875 68761) ACPICA Core Subsystem: 6877 6878There have been some major changes to the sleep/wake support code, as 6879described below (a - e). 6880 6881a) The AcpiLeaveSleepState has been split into two interfaces, similar to 6882AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 6883AcpiLeaveSleepStatePrep. This allows the host to perform actions between 6884the 6885time the _BFS method is called and the _WAK method is called. NOTE: all 6886hosts 6887must update their wake/resume code or else sleep/wake will not work 6888properly. 6889Rafael Wysocki. 6890 6891b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 6892_WAK 6893method. Some machines require that the GPEs are enabled before the _WAK 6894method 6895is executed. Thomas Renninger. 6896 6897c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 6898bit. 6899Some BIOS code assumes that WAK_STS will be cleared on resume and use it 6900to 6901determine whether the system is rebooting or resuming. Matthew Garrett. 6902 6903d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 6904Sleep) to 6905match the ACPI specification requirement. Rafael Wysocki. 6906 6907e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 6908registers within the V5 FADT. This support adds two new files: 6909hardware/hwesleep.c implements the support for the new registers. Moved 6910all 6911sleep/wake external interfaces to hardware/hwxfsleep.c. 6912 6913 6914Added a new OSL interface for ACPI table overrides, 6915AcpiOsPhysicalTableOverride. This interface allows the host to override a 6916table via a physical address, instead of the logical address required by 6917AcpiOsTableOverride. This simplifies the host implementation. Initial 6918implementation by Thomas Renninger. The ACPICA implementation creates a 6919single 6920shared function for table overrides that attempts both a logical and a 6921physical override. 6922 6923Expanded the OSL memory read/write interfaces to 64-bit data 6924(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 6925transfer support for GAS register structures passed to AcpiRead and 6926AcpiWrite. 6927 6928Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 6929custom 6930build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 6931model. 6932See the ACPICA reference for details. ACPICA BZ 942. This option removes 6933about 693410% of the code and 5% of the static data, and the following hardware 6935ACPI 6936features become unavailable: 6937 PM Event and Control registers 6938 SCI interrupt (and handler) 6939 Fixed Events 6940 General Purpose Events (GPEs) 6941 Global Lock 6942 ACPI PM timer 6943 FACS table (Waking vectors and Global Lock) 6944 6945Updated the unix tarball directory structure to match the ACPICA git 6946source 6947tree. This ensures that the generic unix makefiles work properly (in 6948generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 6949867. 6950 6951Updated the return value of the _REV predefined method to integer value 5 6952to 6953reflect ACPI 5.0 support. 6954 6955Moved the external ACPI PM timer interface prototypes to the public 6956acpixf.h 6957file where they belong. 6958 6959Example Code and Data Size: These are the sizes for the OS-independent 6960acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 6961debug 6962version of the code includes the debug output trace mechanism and has a 6963much 6964larger code and data size. 6965 6966 Previous Release: 6967 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 6968 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 6969 Current Release: 6970 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 6971 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 6972 6973 69742) iASL Compiler/Disassembler and Tools: 6975 6976Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 6977descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 6978incorrectly displayed. 6979 6980AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 6981specification. 6982 6983---------------------------------------- 698411 January 2012. Summary of changes for version 20120111: 6985 6986 69871) ACPICA Core Subsystem: 6988 6989Implemented a new mechanism to allow host device drivers to check for 6990address 6991range conflicts with ACPI Operation Regions. Both SystemMemory and 6992SystemIO 6993address spaces are supported. A new external interface, 6994AcpiCheckAddressRange, 6995allows drivers to check an address range against the ACPI namespace. See 6996the 6997ACPICA reference for additional details. Adds one new file, 6998utilities/utaddress.c. Lin Ming, Bob Moore. 6999 7000Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 7001Control 7002and 7003Status registers, update the ACPI 5.0 flags, and update internal data 7004structures to handle an FADT larger than 256 bytes. The size of the ACPI 70055.0 7006FADT is 268 bytes. 7007 7008Updated all ACPICA copyrights and signons to 2012. Added the 2012 7009copyright to 7010all module headers and signons, including the standard Linux header. This 7011affects virtually every file in the ACPICA core subsystem, iASL compiler, 7012and 7013all ACPICA utilities. 7014 7015Example Code and Data Size: These are the sizes for the OS-independent 7016acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7017debug 7018version of the code includes the debug output trace mechanism and has a 7019much 7020larger code and data size. 7021 7022 Previous Release: 7023 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 7024 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 7025 Current Release: 7026 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 7027 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 7028 7029 70302) iASL Compiler/Disassembler and Tools: 7031 7032Disassembler: fixed a problem with the automatic resource tag generation 7033support. Fixes a problem where the resource tags are inadvertently not 7034constructed if the table being disassembled contains external references 7035to 7036control methods. Moved the actual construction of the tags to after the 7037final 7038namespace is constructed (after 2nd parse is invoked due to external 7039control 7040method references.) ACPICA BZ 941. 7041 7042Table Compiler: Make all "generic" operators caseless. These are the 7043operators 7044like UINT8, String, etc. Making these caseless improves ease-of-use. 7045ACPICA BZ 7046934. 7047 7048---------------------------------------- 704923 November 2011. Summary of changes for version 20111123: 7050 70510) ACPI 5.0 Support: 7052 7053This release contains full support for the ACPI 5.0 specification, as 7054summarized below. 7055 7056Reduced Hardware Support: 7057------------------------- 7058 7059This support allows for ACPI systems without the usual ACPI hardware. 7060This 7061support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 7062will 7063not attempt to initialize or use any of the usual ACPI hardware. Note, 7064when 7065this flag is set, all of the following ACPI hardware is assumed to be not 7066present and is not initialized or accessed: 7067 7068 General Purpose Events (GPEs) 7069 Fixed Events (PM1a/PM1b and PM Control) 7070 Power Management Timer and Console Buttons (power/sleep) 7071 Real-time Clock Alarm 7072 Global Lock 7073 System Control Interrupt (SCI) 7074 The FACS is assumed to be non-existent 7075 7076ACPI Tables: 7077------------ 7078 7079All new tables and updates to existing tables are fully supported in the 7080ACPICA headers (for use by device drivers), the disassembler, and the 7081iASL 7082Data Table Compiler. ACPI 5.0 defines these new tables: 7083 7084 BGRT /* Boot Graphics Resource Table */ 7085 DRTM /* Dynamic Root of Trust for Measurement table */ 7086 FPDT /* Firmware Performance Data Table */ 7087 GTDT /* Generic Timer Description Table */ 7088 MPST /* Memory Power State Table */ 7089 PCCT /* Platform Communications Channel Table */ 7090 PMTT /* Platform Memory Topology Table */ 7091 RASF /* RAS Feature table */ 7092 7093Operation Regions/SpaceIDs: 7094--------------------------- 7095 7096All new operation regions are fully supported by the iASL compiler, the 7097disassembler, and the ACPICA runtime code (for dispatch to region 7098handlers.) 7099The new operation region Space IDs are: 7100 7101 GeneralPurposeIo 7102 GenericSerialBus 7103 7104Resource Descriptors: 7105--------------------- 7106 7107All new ASL resource descriptors are fully supported by the iASL 7108compiler, 7109the 7110ASL/AML disassembler, and the ACPICA runtime Resource Manager code 7111(including 7112all new predefined resource tags). New descriptors are: 7113 7114 FixedDma 7115 GpioIo 7116 GpioInt 7117 I2cSerialBus 7118 SpiSerialBus 7119 UartSerialBus 7120 7121ASL/AML Operators, New and Modified: 7122------------------------------------ 7123 7124One new operator is added, the Connection operator, which is used to 7125associate 7126a GeneralPurposeIo or GenericSerialBus resource descriptor with 7127individual 7128field objects within an operation region. Several new protocols are 7129associated 7130with the AccessAs operator. All are fully supported by the iASL compiler, 7131disassembler, and runtime ACPICA AML interpreter: 7132 7133 Connection // Declare Field Connection 7134attributes 7135 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 7136 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 7137Protocol 7138 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 7139 RawDataBuffer // Data type for Vendor Data 7140fields 7141 7142Predefined ASL/AML Objects: 7143--------------------------- 7144 7145All new predefined objects/control-methods are supported by the iASL 7146compiler 7147and the ACPICA runtime validation/repair (arguments and return values.) 7148New 7149predefined names include the following: 7150 7151Standard Predefined Names (Objects or Control Methods): 7152 _AEI, _CLS, _CPC, _CWS, _DEP, 7153 _DLM, _EVT, _GCP, _CRT, _GWS, 7154 _HRV, _PRE, _PSE, _SRT, _SUB. 7155 7156Resource Tags (Names used to access individual fields within resource 7157descriptors): 7158 _DBT, _DPL, _DRS, _END, _FLC, 7159 _IOR, _LIN, _MOD, _PAR, _PHA, 7160 _PIN, _PPI, _POL, _RXL, _SLV, 7161 _SPE, _STB, _TXL, _VEN. 7162 7163ACPICA External Interfaces: 7164--------------------------- 7165 7166Several new interfaces have been defined for use by ACPI-related device 7167drivers and other host OS services: 7168 7169AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 7170to 7171acquire and release AML mutexes that are defined in the DSDT/SSDT tables 7172provided by the BIOS. They are intended to be used in conjunction with 7173the 7174ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 7175mutual exclusion with the AML code/interpreter. 7176 7177AcpiGetEventResources: Returns the (formatted) resource descriptors as 7178defined 7179by the ACPI 5.0 _AEI object (ACPI Event Information). This object 7180provides 7181resource descriptors associated with hardware-reduced platform events, 7182similar 7183to the AcpiGetCurrentResources interface. 7184 7185Operation Region Handlers: For General Purpose IO and Generic Serial Bus 7186operation regions, information about the Connection() object and any 7187optional 7188length information is passed to the region handler within the Context 7189parameter. 7190 7191AcpiBufferToResource: This interface converts a raw AML buffer containing 7192a 7193resource template or resource descriptor to the ACPI_RESOURCE internal 7194format 7195suitable for use by device drivers. Can be used by an operation region 7196handler 7197to convert the Connection() buffer object into a ACPI_RESOURCE. 7198 7199Miscellaneous/Tools/TestSuites: 7200------------------------------- 7201 7202Support for extended _HID names (Four alpha characters instead of three). 7203Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 7204Support for ACPI 5.0 features in the ASLTS test suite. 7205Fully updated documentation (ACPICA and iASL reference documents.) 7206 7207ACPI Table Definition Language: 7208------------------------------- 7209 7210Support for this language was implemented and released as a subsystem of 7211the 7212iASL compiler in 2010. (See the iASL compiler User Guide.) 7213 7214 7215Non-ACPI 5.0 changes for this release: 7216-------------------------------------- 7217 72181) ACPICA Core Subsystem: 7219 7220Fix a problem with operation region declarations where a failure can 7221occur 7222if 7223the region name and an argument that evaluates to an object (such as the 7224region address) are in different namespace scopes. Lin Ming, ACPICA BZ 7225937. 7226 7227Do not abort an ACPI table load if an invalid space ID is found within. 7228This 7229will be caught later if the offending method is executed. ACPICA BZ 925. 7230 7231Fixed an issue with the FFixedHW space ID where the ID was not always 7232recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 7233 7234Fixed a problem with the 32-bit generation of the unix-specific OSL 7235(osunixxf.c). Lin Ming, ACPICA BZ 936. 7236 7237Several changes made to enable generation with the GCC 4.6 compiler. 7238ACPICA BZ 7239935. 7240 7241New error messages: Unsupported I/O requests (not 8/16/32 bit), and 7242Index/Bank 7243field registers out-of-range. 7244 72452) iASL Compiler/Disassembler and Tools: 7246 7247iASL: Implemented the __PATH__ operator, which returns the full pathname 7248of 7249the current source file. 7250 7251AcpiHelp: Automatically display expanded keyword information for all ASL 7252operators. 7253 7254Debugger: Add "Template" command to disassemble/dump resource template 7255buffers. 7256 7257Added a new master script to generate and execute the ASLTS test suite. 7258Automatically handles 32- and 64-bit generation. See tests/aslts.sh 7259 7260iASL: Fix problem with listing generation during processing of the 7261Switch() 7262operator where AML listing was disabled until the entire Switch block was 7263completed. 7264 7265iASL: Improve support for semicolon statement terminators. Fix "invalid 7266character" message for some cases when the semicolon is used. Semicolons 7267are 7268now allowed after every <Term> grammar element. ACPICA BZ 927. 7269 7270iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 7271923. 7272 7273Disassembler: Fix problem with disassembly of the DataTableRegion 7274operator 7275where an inadvertent "Unhandled deferred opcode" message could be 7276generated. 7277 72783) Example Code and Data Size 7279 7280These are the sizes for the OS-independent acpica.lib produced by the 7281Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7282includes the debug output trace mechanism and has a much larger code and 7283data 7284size. 7285 7286 Previous Release: 7287 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7288 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7289 Current Release: 7290 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 7291 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 7292 7293---------------------------------------- 729422 September 2011. Summary of changes for version 20110922: 7295 72960) ACPI 5.0 News: 7297 7298Support for ACPI 5.0 in ACPICA has been underway for several months and 7299will 7300be released at the same time that ACPI 5.0 is officially released. 7301 7302The ACPI 5.0 specification is on track for release in the next few 7303months. 7304 73051) ACPICA Core Subsystem: 7306 7307Fixed a problem where the maximum sleep time for the Sleep() operator was 7308intended to be limited to two seconds, but was inadvertently limited to 730920 7310seconds instead. 7311 7312Linux and Unix makefiles: Added header file dependencies to ensure 7313correct 7314generation of ACPICA core code and utilities. Also simplified the 7315makefiles 7316considerably through the use of the vpath variable to specify search 7317paths. 7318ACPICA BZ 924. 7319 73202) iASL Compiler/Disassembler and Tools: 7321 7322iASL: Implemented support to check the access length for all fields 7323created to 7324access named Resource Descriptor fields. For example, if a resource field 7325is 7326defined to be two bits, a warning is issued if a CreateXxxxField() is 7327used 7328with an incorrect bit length. This is implemented for all current 7329resource 7330descriptor names. ACPICA BZ 930. 7331 7332Disassembler: Fixed a byte ordering problem with the output of 24-bit and 733356- 7334bit integers. 7335 7336iASL: Fixed a couple of issues associated with variable-length package 7337objects. 1) properly handle constants like One, Ones, Zero -- do not make 7338a 7339VAR_PACKAGE when these are used as a package length. 2) Allow the 7340VAR_PACKAGE 7341opcode (in addition to PACKAGE) when validating object types for 7342predefined 7343names. 7344 7345iASL: Emit statistics for all output files (instead of just the ASL input 7346and 7347AML output). Includes listings, hex files, etc. 7348 7349iASL: Added -G option to the table compiler to allow the compilation of 7350custom 7351ACPI tables. The only part of a table that is required is the standard 735236- 7353byte 7354ACPI header. 7355 7356AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 7357headers), 7358which also adds correct 64-bit support. Also, now all output filenames 7359are 7360completely lower case. 7361 7362AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 7363loading table files. A warning is issued for any such tables. The only 7364exception is an FADT. This also fixes a possible fault when attempting to 7365load 7366non-AML tables. ACPICA BZ 932. 7367 7368AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 7369a 7370missing table terminator could cause a fault when using the -p option. 7371 7372AcpiSrc: Fixed a possible divide-by-zero fault when generating file 7373statistics. 7374 73753) Example Code and Data Size 7376 7377These are the sizes for the OS-independent acpica.lib produced by the 7378Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 7379includes the debug output trace mechanism and has a much larger code and 7380data 7381size. 7382 7383 Previous Release (VC 9.0): 7384 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7385 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7386 Current Release (VC 9.0): 7387 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7388 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7389 7390 7391---------------------------------------- 739223 June 2011. Summary of changes for version 20110623: 7393 73941) ACPI CA Core Subsystem: 7395 7396Updated the predefined name repair mechanism to not attempt repair of a 7397_TSS 7398return object if a _PSS object is present. We can only sort the _TSS 7399return 7400package if there is no _PSS within the same scope. This is because if 7401_PSS 7402is 7403present, the ACPI specification dictates that the _TSS Power Dissipation 7404field 7405is to be ignored, and therefore some BIOSs leave garbage values in the 7406_TSS 7407Power field(s). In this case, it is best to just return the _TSS package 7408as- 7409is. Reported by, and fixed with assistance from Fenghua Yu. 7410 7411Added an option to globally disable the control method return value 7412validation 7413and repair. This runtime option can be used to disable return value 7414repair 7415if 7416this is causing a problem on a particular machine. Also added an option 7417to 7418AcpiExec (-dr) to set this disable flag. 7419 7420All makefiles and project files: Major changes to improve generation of 7421ACPICA 7422tools. ACPICA BZ 912: 7423 Reduce default optimization levels to improve compatibility 7424 For Linux, add strict-aliasing=0 for gcc 4 7425 Cleanup and simplify use of command line defines 7426 Cleanup multithread library support 7427 Improve usage messages 7428 7429Linux-specific header: update handling of THREAD_ID and pthread. For the 743032- 7431bit case, improve casting to eliminate possible warnings, especially with 7432the 7433acpica tools. 7434 7435Example Code and Data Size: These are the sizes for the OS-independent 7436acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7437debug 7438version of the code includes the debug output trace mechanism and has a 7439much 7440larger code and data size. 7441 7442 Previous Release (VC 9.0): 7443 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7444 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7445 Current Release (VC 9.0): 7446 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 7447 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7448 74492) iASL Compiler/Disassembler and Tools: 7450 7451With this release, a new utility named "acpihelp" has been added to the 7452ACPICA 7453package. This utility summarizes the ACPI specification chapters for the 7454ASL 7455and AML languages. It generates under Linux/Unix as well as Windows, and 7456provides the following functionality: 7457 Find/display ASL operator(s) -- with description and syntax. 7458 Find/display ASL keyword(s) -- with exact spelling and descriptions. 7459 Find/display ACPI predefined name(s) -- with description, number 7460 of arguments, and the return value data type. 7461 Find/display AML opcode name(s) -- with opcode, arguments, and 7462grammar. 7463 Decode/display AML opcode -- with opcode name, arguments, and 7464grammar. 7465 7466Service Layers: Make multi-thread support configurable. Conditionally 7467compile 7468the multi-thread support so that threading libraries will not be linked 7469if 7470not 7471necessary. The only tool that requires multi-thread support is AcpiExec. 7472 7473iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 7474of 7475Bison appear to want the interface to yyerror to be a const char * (or at 7476least this is a problem when generating iASL on some systems.) ACPICA BZ 7477923 7478Pierre Lejeune. 7479 7480Tools: Fix for systems where O_BINARY is not defined. Only used for 7481Windows 7482versions of the tools. 7483 7484---------------------------------------- 748527 May 2011. Summary of changes for version 20110527: 7486 74871) ACPI CA Core Subsystem: 7488 7489ASL Load() operator: Reinstate most restrictions on the incoming ACPI 7490table 7491signature. Now, only allow SSDT, OEMx, and a null signature. History: 7492 1) Originally, we checked the table signature for "SSDT" or "PSDT". 7493 (PSDT is now obsolete.) 7494 2) We added support for OEMx tables, signature "OEM" plus a fourth 7495 "don't care" character. 7496 3) Valid tables were encountered with a null signature, so we just 7497 gave up on validating the signature, (05/2008). 7498 4) We encountered non-AML tables such as the MADT, which caused 7499 interpreter errors and kernel faults. So now, we once again allow 7500 only SSDT, OEMx, and now, also a null signature. (05/2011). 7501 7502Added the missing _TDL predefined name to the global name list in order 7503to 7504enable validation. Affects both the core ACPICA code and the iASL 7505compiler. 7506 7507Example Code and Data Size: These are the sizes for the OS-independent 7508acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7509debug 7510version of the code includes the debug output trace mechanism and has a 7511much 7512larger code and data size. 7513 7514 Previous Release (VC 9.0): 7515 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7516 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7517 Current Release (VC 9.0): 7518 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 7519 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 7520 75212) iASL Compiler/Disassembler and Tools: 7522 7523Debugger/AcpiExec: Implemented support for "complex" method arguments on 7524the 7525debugger command line. This adds support beyond simple integers -- 7526including 7527Strings, Buffers, and Packages. Includes support for nested packages. 7528Increased the default command line buffer size to accommodate these 7529arguments. 7530See the ACPICA reference for details and syntax. ACPICA BZ 917. 7531 7532Debugger/AcpiExec: Implemented support for "default" method arguments for 7533the 7534Execute/Debug command. Now, the debugger will always invoke a control 7535method 7536with the required number of arguments -- even if the command line 7537specifies 7538none or insufficient arguments. It uses default integer values for any 7539missing 7540arguments. Also fixes a bug where only six method arguments maximum were 7541supported instead of the required seven. 7542 7543Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 7544and 7545also return status in order to prevent buffer overruns. See the ACPICA 7546reference for details and syntax. ACPICA BZ 921 7547 7548iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 7549makefiles to simplify support for the two different but similar parser 7550generators, bison and yacc. 7551 7552Updated the generic unix makefile for gcc 4. The default gcc version is 7553now 7554expected to be 4 or greater, since options specific to gcc 4 are used. 7555 7556---------------------------------------- 755713 April 2011. Summary of changes for version 20110413: 7558 75591) ACPI CA Core Subsystem: 7560 7561Implemented support to execute a so-called "orphan" _REG method under the 7562EC 7563device. This change will force the execution of a _REG method underneath 7564the 7565EC 7566device even if there is no corresponding operation region of type 7567EmbeddedControl. Fixes a problem seen on some machines and apparently is 7568compatible with Windows behavior. ACPICA BZ 875. 7569 7570Added more predefined methods that are eligible for automatic NULL 7571package 7572element removal. This change adds another group of predefined names to 7573the 7574list 7575of names that can be repaired by having NULL package elements dynamically 7576removed. This group are those methods that return a single variable- 7577length 7578package containing simple data types such as integers, buffers, strings. 7579This 7580includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 7581_PSL, 7582_Sx, 7583and _TZD. ACPICA BZ 914. 7584 7585Split and segregated all internal global lock functions to a new file, 7586evglock.c. 7587 7588Updated internal address SpaceID for DataTable regions. Moved this 7589internal 7590space 7591id in preparation for ACPI 5.0 changes that will include some new space 7592IDs. 7593This 7594change should not affect user/host code. 7595 7596Example Code and Data Size: These are the sizes for the OS-independent 7597acpica.lib 7598produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7599version of 7600the code includes the debug output trace mechanism and has a much larger 7601code 7602and 7603data size. 7604 7605 Previous Release (VC 9.0): 7606 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7607 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7608 Current Release (VC 9.0): 7609 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 7610 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 7611 76122) iASL Compiler/Disassembler and Tools: 7613 7614iASL/DTC: Major update for new grammar features. Allow generic data types 7615in 7616custom ACPI tables. Field names are now optional. Any line can be split 7617to 7618multiple lines using the continuation char (\). Large buffers now use 7619line- 7620continuation character(s) and no colon on the continuation lines. See the 7621grammar 7622update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 7623Moore. 7624 7625iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 7626statements. 7627Since the parser stuffs a "zero" as the return value for these statements 7628(due 7629to 7630the underlying AML grammar), they were seen as "return with value" by the 7631iASL 7632semantic checking. They are now seen correctly as "null" return 7633statements. 7634 7635iASL: Check if a_REG declaration has a corresponding Operation Region. 7636Adds a 7637check for each _REG to ensure that there is in fact a corresponding 7638operation 7639region declaration in the same scope. If not, the _REG method is not very 7640useful 7641since it probably won't be executed. ACPICA BZ 915. 7642 7643iASL/DTC: Finish support for expression evaluation. Added a new 7644expression 7645parser 7646that implements c-style operator precedence and parenthesization. ACPICA 7647bugzilla 7648908. 7649 7650Disassembler/DTC: Remove support for () and <> style comments in data 7651tables. 7652Now 7653that DTC has full expression support, we don't want to have comment 7654strings 7655that 7656start with a parentheses or a less-than symbol. Now, only the standard /* 7657and 7658// 7659comments are supported, as well as the bracket [] comments. 7660 7661AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 7662"unusual" 7663headers in the acpidump file. Update the header validation to support 7664these 7665tables. Problem introduced in previous AcpiXtract version in the change 7666to 7667support "wrong checksum" error messages emitted by acpidump utility. 7668 7669iASL: Add a * option to generate all template files (as a synonym for 7670ALL) 7671as 7672in 7673"iasl -T *" or "iasl -T ALL". 7674 7675iASL/DTC: Do not abort compiler on fatal errors. We do not want to 7676completely 7677abort the compiler on "fatal" errors, simply should abort the current 7678compile. 7679This allows multiple compiles with a single (possibly wildcard) compiler 7680invocation. 7681 7682---------------------------------------- 768316 March 2011. Summary of changes for version 20110316: 7684 76851) ACPI CA Core Subsystem: 7686 7687Fixed a problem caused by a _PRW method appearing at the namespace root 7688scope 7689during the setup of wake GPEs. A fault could occur if a _PRW directly 7690under 7691the 7692root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 7693 7694Implemented support for "spurious" Global Lock interrupts. On some 7695systems, a 7696global lock interrupt can occur without the pending flag being set. Upon 7697a 7698GL 7699interrupt, we now ensure that a thread is actually waiting for the lock 7700before 7701signaling GL availability. Rafael Wysocki, Bob Moore. 7702 7703Example Code and Data Size: These are the sizes for the OS-independent 7704acpica.lib 7705produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 7706version of 7707the code includes the debug output trace mechanism and has a much larger 7708code 7709and 7710data size. 7711 7712 Previous Release (VC 9.0): 7713 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7714 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7715 Current Release (VC 9.0): 7716 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 7717 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 7718 77192) iASL Compiler/Disassembler and Tools: 7720 7721Implemented full support for the "SLIC" ACPI table. Includes support in 7722the 7723header files, disassembler, table compiler, and template generator. Bob 7724Moore, 7725Lin Ming. 7726 7727AcpiXtract: Correctly handle embedded comments and messages from 7728AcpiDump. 7729Apparently some or all versions of acpidump will occasionally emit a 7730comment 7731like 7732"Wrong checksum", etc., into the dump file. This was causing problems for 7733AcpiXtract. ACPICA BZ 905. 7734 7735iASL: Fix the Linux makefile by removing an inadvertent double file 7736inclusion. 7737ACPICA BZ 913. 7738 7739AcpiExec: Update installation of operation region handlers. Install one 7740handler 7741for a user-defined address space. This is used by the ASL test suite 7742(ASLTS). 7743 7744---------------------------------------- 774511 February 2011. Summary of changes for version 20110211: 7746 77471) ACPI CA Core Subsystem: 7748 7749Added a mechanism to defer _REG methods for some early-installed 7750handlers. 7751Most user handlers should be installed before call to 7752AcpiEnableSubsystem. 7753However, Event handlers and region handlers should be installed after 7754AcpiInitializeObjects. Override handlers for the "default" regions should 7755be 7756installed early, however. This change executes all _REG methods for the 7757default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 7758chicken/egg issues between them. ACPICA BZ 848. 7759 7760Implemented an optimization for GPE detection. This optimization will 7761simply 7762ignore GPE registers that contain no enabled GPEs -- there is no need to 7763read the register since this information is available internally. This 7764becomes more important on machines with a large GPE space. ACPICA 7765bugzilla 7766884. Lin Ming. Suggestion from Joe Liu. 7767 7768Removed all use of the highly unreliable FADT revision field. The 7769revision 7770number in the FADT has been found to be completely unreliable and cannot 7771be 7772trusted. Only the actual table length can be used to infer the version. 7773This 7774change updates the ACPICA core and the disassembler so that both no 7775longer 7776even look at the FADT version and instead depend solely upon the FADT 7777length. 7778 7779Fix an unresolved name issue for the no-debug and no-error-message source 7780generation cases. The _AcpiModuleName was left undefined in these cases, 7781but 7782it is actually needed as a parameter to some interfaces. Define 7783_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 7784 7785Split several large files (makefiles and project files updated) 7786 utglobal.c -> utdecode.c 7787 dbcomds.c -> dbmethod.c dbnames.c 7788 dsopcode.c -> dsargs.c dscontrol.c 7789 dsload.c -> dsload2.c 7790 aslanalyze.c -> aslbtypes.c aslwalks.c 7791 7792Example Code and Data Size: These are the sizes for the OS-independent 7793acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7794debug version of the code includes the debug output trace mechanism and 7795has 7796a much larger code and data size. 7797 7798 Previous Release (VC 9.0): 7799 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7800 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7801 Current Release (VC 9.0): 7802 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7803 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7804 78052) iASL Compiler/Disassembler and Tools: 7806 7807iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 7808These are useful C-style macros with the standard definitions. ACPICA 7809bugzilla 898. 7810 7811iASL/DTC: Added support for integer expressions and labels. Support for 7812full 7813expressions for all integer fields in all ACPI tables. Support for labels 7814in 7815"generic" portions of tables such as UEFI. See the iASL reference manual. 7816 7817Debugger: Added a command to display the status of global handlers. The 7818"handlers" command will display op region, fixed event, and miscellaneous 7819global handlers. installation status -- and for op regions, whether 7820default 7821or user-installed handler will be used. 7822 7823iASL: Warn if reserved method incorrectly returns a value. Many 7824predefined 7825names are defined such that they do not return a value. If implemented as 7826a 7827method, issue a warning if such a name explicitly returns a value. ACPICA 7828Bugzilla 855. 7829 7830iASL: Added detection of GPE method name conflicts. Detects a conflict 7831where 7832there are two GPE methods of the form _Lxy and _Exy in the same scope. 7833(For 7834example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 7835 7836iASL/DTC: Fixed a couple input scanner issues with comments and line 7837numbers. Comment remover could get confused and miss a comment ending. 7838Fixed 7839a problem with line counter maintenance. 7840 7841iASL/DTC: Reduced the severity of some errors from fatal to error. There 7842is 7843no need to abort on simple errors within a field definition. 7844 7845Debugger: Simplified the output of the help command. All help output now 7846in 7847a single screen, instead of help subcommands. ACPICA Bugzilla 897. 7848 7849---------------------------------------- 785012 January 2011. Summary of changes for version 20110112: 7851 78521) ACPI CA Core Subsystem: 7853 7854Fixed a race condition between method execution and namespace walks that 7855can 7856possibly cause a fault. The problem was apparently introduced in version 785720100528 as a result of a performance optimization that reduces the 7858number 7859of 7860namespace walks upon method exit by using the delete_namespace_subtree 7861function instead of the delete_namespace_by_owner function used 7862previously. 7863Bug is a missing namespace lock in the delete_namespace_subtree function. 7864dana.myers@oracle.com 7865 7866Fixed several issues and a possible fault with the automatic "serialized" 7867method support. History: This support changes a method to "serialized" on 7868the 7869fly if the method generates an AE_ALREADY_EXISTS error, indicating the 7870possibility that it cannot handle reentrancy. This fix repairs a couple 7871of 7872issues seen in the field, especially on machines with many cores: 7873 7874 1) Delete method children only upon the exit of the last thread, 7875 so as to not delete objects out from under other running threads 7876 (and possibly causing a fault.) 7877 2) Set the "serialized" bit for the method only upon the exit of the 7878 Last thread, so as to not cause deadlock when running threads 7879 attempt to exit. 7880 3) Cleanup the use of the AML "MethodFlags" and internal method flags 7881 so that there is no longer any confusion between the two. 7882 7883 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 7884 7885Debugger: Now lock the namespace for duration of a namespace dump. 7886Prevents 7887issues if the namespace is changing dynamically underneath the debugger. 7888Especially affects temporary namespace nodes, since the debugger displays 7889these also. 7890 7891Updated the ordering of include files. The ACPICA headers should appear 7892before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 7893set 7894any necessary compiler-specific defines, etc. Affects the ACPI-related 7895tools 7896and utilities. 7897 7898Updated all ACPICA copyrights and signons to 2011. Added the 2011 7899copyright 7900to all module headers and signons, including the Linux header. This 7901affects 7902virtually every file in the ACPICA core subsystem, iASL compiler, and all 7903utilities. 7904 7905Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 7906project files for VC++ 6.0 are now obsolete. New project files can be 7907found 7908under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 7909details. 7910 7911Example Code and Data Size: These are the sizes for the OS-independent 7912acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 7913debug version of the code includes the debug output trace mechanism and 7914has a 7915much larger code and data size. 7916 7917 Previous Release (VC 6.0): 7918 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 7919 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 7920 Current Release (VC 9.0): 7921 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 7922 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 7923 79242) iASL Compiler/Disassembler and Tools: 7925 7926iASL: Added generic data types to the Data Table compiler. Add "generic" 7927data 7928types such as UINT32, String, Unicode, etc., to simplify the generation 7929of 7930platform-defined tables such as UEFI. Lin Ming. 7931 7932iASL: Added listing support for the Data Table Compiler. Adds listing 7933support 7934(-l) to display actual binary output for each line of input code. 7935 7936---------------------------------------- 793709 December 2010. Summary of changes for version 20101209: 7938 79391) ACPI CA Core Subsystem: 7940 7941Completed the major overhaul of the GPE support code that was begun in 7942July 79432010. Major features include: removal of _PRW execution in ACPICA (host 7944executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 7945changes to existing interfaces, simplification of GPE handler operation, 7946and 7947a handful of new interfaces: 7948 7949 AcpiUpdateAllGpes 7950 AcpiFinishGpe 7951 AcpiSetupGpeForWake 7952 AcpiSetGpeWakeMask 7953 One new file, evxfgpe.c to consolidate all external GPE interfaces. 7954 7955See the ACPICA Programmer Reference for full details and programming 7956information. See the new section 4.4 "General Purpose Event (GPE) 7957Support" 7958for a full overview, and section 8.7 "ACPI General Purpose Event 7959Management" 7960for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 7961Ming, 7962Bob Moore, Rafael Wysocki. 7963 7964Implemented a new GPE feature for Windows compatibility, the "Implicit 7965Wake 7966GPE Notify". This feature will automatically issue a Notify(2) on a 7967device 7968when a Wake GPE is received if there is no corresponding GPE method or 7969handler. ACPICA BZ 870. 7970 7971Fixed a problem with the Scope() operator during table parse and load 7972phase. 7973During load phase (table load or method execution), the scope operator 7974should 7975not enter the target into the namespace. Instead, it should open a new 7976scope 7977at the target location. Linux BZ 19462, ACPICA BZ 882. 7978 7979Example Code and Data Size: These are the sizes for the OS-independent 7980acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7981debug version of the code includes the debug output trace mechanism and 7982has a 7983much larger code and data size. 7984 7985 Previous Release: 7986 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 7987 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 7988 Current Release: 7989 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 7990 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 7991 79922) iASL Compiler/Disassembler and Tools: 7993 7994iASL: Relax the alphanumeric restriction on _CID strings. These strings 7995are 7996"bus-specific" per the ACPI specification, and therefore any characters 7997are 7998acceptable. The only checks that can be performed are for a null string 7999and 8000perhaps for a leading asterisk. ACPICA BZ 886. 8001 8002iASL: Fixed a problem where a syntax error that caused a premature EOF 8003condition on the source file emitted a very confusing error message. The 8004premature EOF is now detected correctly. ACPICA BZ 891. 8005 8006Disassembler: Decode the AccessSize within a Generic Address Structure 8007(byte 8008access, word access, etc.) Note, this field does not allow arbitrary bit 8009access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 8010 8011New: AcpiNames utility - Example namespace dump utility. Shows an example 8012of 8013ACPICA configuration for a minimal namespace dump utility. Uses table and 8014namespace managers, but no AML interpreter. Does not add any 8015functionality 8016over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 8017partition and configure ACPICA. ACPICA BZ 883. 8018 8019AML Debugger: Increased the debugger buffer size for method return 8020objects. 8021Was 4K, increased to 16K. Also enhanced error messages for debugger 8022method 8023execution, including the buffer overflow case. 8024 8025---------------------------------------- 802613 October 2010. Summary of changes for version 20101013: 8027 80281) ACPI CA Core Subsystem: 8029 8030Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 8031now 8032clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 8033HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 8034 8035Changed the type of the predefined namespace object _TZ from ThermalZone 8036to 8037Device. This was found to be confusing to the host software that 8038processes 8039the various thermal zones, since _TZ is not really a ThermalZone. 8040However, 8041a 8042Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 8043Zhang. 8044 8045Added Windows Vista SP2 to the list of supported _OSI strings. The actual 8046string is "Windows 2006 SP2". 8047 8048Eliminated duplicate code in AcpiUtExecute* functions. Now that the 8049nsrepair 8050code automatically repairs _HID-related strings, this type of code is no 8051longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 8052878. 8053 8054Example Code and Data Size: These are the sizes for the OS-independent 8055acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8056debug version of the code includes the debug output trace mechanism and 8057has a 8058much larger code and data size. 8059 8060 Previous Release: 8061 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8062 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8063 Current Release: 8064 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8065 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8066 80672) iASL Compiler/Disassembler and Tools: 8068 8069iASL: Implemented additional compile-time validation for _HID strings. 8070The 8071non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 8072length 8073of 8074the string must be exactly seven or eight characters. For both _HID and 8075_CID 8076strings, all characters must be alphanumeric. ACPICA BZ 874. 8077 8078iASL: Allow certain "null" resource descriptors. Some BIOS code creates 8079descriptors that are mostly or all zeros, with the expectation that they 8080will 8081be filled in at runtime. iASL now allows this as long as there is a 8082"resource 8083tag" (name) associated with the descriptor, which gives the ASL a handle 8084needed to modify the descriptor. ACPICA BZ 873. 8085 8086Added single-thread support to the generic Unix application OSL. 8087Primarily 8088for iASL support, this change removes the use of semaphores in the 8089single- 8090threaded ACPICA tools/applications - increasing performance. The 8091_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 8092option. ACPICA BZ 879. 8093 8094AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 8095support 8096for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 8097 8098iASL: Moved all compiler messages to a new file, aslmessages.h. 8099 8100---------------------------------------- 810115 September 2010. Summary of changes for version 20100915: 8102 81031) ACPI CA Core Subsystem: 8104 8105Removed the AcpiOsDerivePciId OSL interface. The various host 8106implementations 8107of this function were not OS-dependent and are now obsolete and can be 8108removed from all host OSLs. This function has been replaced by 8109AcpiHwDerivePciId, which is now part of the ACPICA core code. 8110AcpiHwDerivePciId has been implemented without recursion. Adds one new 8111module, hwpci.c. ACPICA BZ 857. 8112 8113Implemented a dynamic repair for _HID and _CID strings. The following 8114problems are now repaired at runtime: 1) Remove a leading asterisk in the 8115string, and 2) the entire string is uppercased. Both repairs are in 8116accordance with the ACPI specification and will simplify host driver 8117code. 8118ACPICA BZ 871. 8119 8120The ACPI_THREAD_ID type is no longer configurable, internally it is now 8121always UINT64. This simplifies the ACPICA code, especially any printf 8122output. 8123UINT64 is the only common data type for all thread_id types across all 8124operating systems. It is now up to the host OSL to cast the native 8125thread_id 8126type to UINT64 before returning the value to ACPICA (via 8127AcpiOsGetThreadId). 8128Lin Ming, Bob Moore. 8129 8130Added the ACPI_INLINE type to enhance the ACPICA configuration. The 8131"inline" 8132keyword is not standard across compilers, and this type allows inline to 8133be 8134configured on a per-compiler basis. Lin Ming. 8135 8136Made the system global AcpiGbl_SystemAwakeAndRunning publicly 8137available. 8138Added an extern for this boolean in acpixf.h. Some hosts utilize this 8139value 8140during suspend/restore operations. ACPICA BZ 869. 8141 8142All code that implements error/warning messages with the "ACPI:" prefix 8143has 8144been moved to a new module, utxferror.c. 8145 8146The UINT64_OVERLAY was moved to utmath.c, which is the only module where 8147it 8148is used. ACPICA BZ 829. Lin Ming, Bob Moore. 8149 8150Example Code and Data Size: These are the sizes for the OS-independent 8151acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8152debug version of the code includes the debug output trace mechanism and 8153has a 8154much larger code and data size. 8155 8156 Previous Release: 8157 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 8158 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 8159 Current Release: 8160 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 8161 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 8162 81632) iASL Compiler/Disassembler and Tools: 8164 8165iASL/Disassembler: Write ACPI errors to stderr instead of the output 8166file. 8167This keeps the output files free of random error messages that may 8168originate 8169from within the namespace/interpreter code. Used this opportunity to 8170merge 8171all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 8172866. Lin Ming, Bob Moore. 8173 8174Tools: update some printfs for ansi warnings on size_t. Handle width 8175change 8176of size_t on 32-bit versus 64-bit generations. Lin Ming. 8177 8178---------------------------------------- 817906 August 2010. Summary of changes for version 20100806: 8180 81811) ACPI CA Core Subsystem: 8182 8183Designed and implemented a new host interface to the _OSI support code. 8184This 8185will allow the host to dynamically add or remove multiple _OSI strings, 8186as 8187well as install an optional handler that is called for each _OSI 8188invocation. 8189Also added a new AML debugger command, 'osi' to display and modify the 8190global 8191_OSI string table, and test support in the AcpiExec utility. See the 8192ACPICA 8193reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 8194New Functions: 8195 AcpiInstallInterface - Add an _OSI string. 8196 AcpiRemoveInterface - Delete an _OSI string. 8197 AcpiInstallInterfaceHandler - Install optional _OSI handler. 8198Obsolete Functions: 8199 AcpiOsValidateInterface - no longer used. 8200New Files: 8201 source/components/utilities/utosi.c 8202 8203Re-introduced the support to enable multi-byte transfers for Embedded 8204Controller (EC) operation regions. A reported problem was found to be a 8205bug 8206in the host OS, not in the multi-byte support. Previously, the maximum 8207data 8208size passed to the EC operation region handler was a single byte. There 8209are 8210often EC Fields larger than one byte that need to be transferred, and it 8211is 8212useful for the EC driver to lock these as a single transaction. This 8213change 8214enables single transfers larger than 8 bits. This effectively changes the 8215access to the EC space from ByteAcc to AnyAcc, and will probably require 8216changes to the host OS Embedded Controller driver to enable 16/32/64/256- 8217bit 8218transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 8219 8220Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 8221prototype in acpiosxf.h had the output value pointer as a (void *). 8222It should be a (UINT64 *). This may affect some host OSL code. 8223 8224Fixed a couple problems with the recently modified Linux makefiles for 8225iASL 8226and AcpiExec. These new makefiles place the generated object files in the 8227local directory so that there can be no collisions between the files that 8228are 8229shared between them that are compiled with different options. 8230 8231Example Code and Data Size: These are the sizes for the OS-independent 8232acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8233debug version of the code includes the debug output trace mechanism and 8234has a 8235much larger code and data size. 8236 8237 Previous Release: 8238 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8239 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 8240 Current Release: 8241 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 8242 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 8243 82442) iASL Compiler/Disassembler and Tools: 8245 8246iASL/Disassembler: Added a new option (-da, "disassemble all") to load 8247the 8248namespace from and disassemble an entire group of AML files. Useful for 8249loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 8250and 8251disassembling with one simple command. ACPICA BZ 865. Lin Ming. 8252 8253iASL: Allow multiple invocations of -e option. This change allows 8254multiple 8255uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 8256834. 8257Lin Ming. 8258 8259---------------------------------------- 826002 July 2010. Summary of changes for version 20100702: 8261 82621) ACPI CA Core Subsystem: 8263 8264Implemented several updates to the recently added GPE reference count 8265support. The model for "wake" GPEs is changing to give the host OS 8266complete 8267control of these GPEs. Eventually, the ACPICA core will not execute any 8268_PRW 8269methods, since the host already must execute them. Also, additional 8270changes 8271were made to help ensure that the reference counts are kept in proper 8272synchronization with reality. Rafael J. Wysocki. 8273 82741) Ensure that GPEs are not enabled twice during initialization. 82752) Ensure that GPE enable masks stay in sync with the reference count. 82763) Do not inadvertently enable GPEs when writing GPE registers. 82774) Remove the internal wake reference counter and add new AcpiGpeWakeup 8278interface. This interface will set or clear individual GPEs for wakeup. 82795) Remove GpeType argument from AcpiEnable and AcpiDisable. These 8280interfaces 8281are now used for "runtime" GPEs only. 8282 8283Changed the behavior of the GPE install/remove handler interfaces. The 8284GPE 8285is 8286no longer disabled during this process, as it was found to cause problems 8287on 8288some machines. Rafael J. Wysocki. 8289 8290Reverted a change introduced in version 20100528 to enable Embedded 8291Controller multi-byte transfers. This change was found to cause problems 8292with 8293Index Fields and possibly Bank Fields. It will be reintroduced when these 8294problems have been resolved. 8295 8296Fixed a problem with references to Alias objects within Package Objects. 8297A 8298reference to an Alias within the definition of a Package was not always 8299resolved properly. Aliases to objects like Processors, Thermal zones, 8300etc. 8301were resolved to the actual object instead of a reference to the object 8302as 8303it 8304should be. Package objects are only allowed to contain integer, string, 8305buffer, package, and reference objects. Redhat bugzilla 608648. 8306 8307Example Code and Data Size: These are the sizes for the OS-independent 8308acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8309debug version of the code includes the debug output trace mechanism and 8310has a 8311much larger code and data size. 8312 8313 Previous Release: 8314 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8315 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8316 Current Release: 8317 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8318 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 8319 83202) iASL Compiler/Disassembler and Tools: 8321 8322iASL: Implemented a new compiler subsystem to allow definition and 8323compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 8324These 8325are called "ACPI Data Tables", and the new compiler is the "Data Table 8326Compiler". This compiler is intended to simplify the existing error-prone 8327process of creating these tables for the BIOS, as well as allowing the 8328disassembly, modification, recompilation, and override of existing ACPI 8329data 8330tables. See the iASL User Guide for detailed information. 8331 8332iASL: Implemented a new Template Generator option in support of the new 8333Data 8334Table Compiler. This option will create examples of all known ACPI tables 8335that can be used as the basis for table development. See the iASL 8336documentation and the -T option. 8337 8338Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 8339Descriptor Table). 8340 8341Updated the Linux makefiles for iASL and AcpiExec to place the generated 8342object files in the local directory so that there can be no collisions 8343between the shared files between them that are generated with different 8344options. 8345 8346Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 8347Use 8348the #define __APPLE__ to enable this support. 8349 8350---------------------------------------- 835128 May 2010. Summary of changes for version 20100528: 8352 8353Note: The ACPI 4.0a specification was released on April 5, 2010 and is 8354available at www.acpi.info. This is primarily an errata release. 8355 83561) ACPI CA Core Subsystem: 8357 8358Undefined ACPI tables: We are looking for the definitions for the 8359following 8360ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 8361 8362Implemented support to enable multi-byte transfers for Embedded 8363Controller 8364(EC) operation regions. Previously, the maximum data size passed to the 8365EC 8366operation region handler was a single byte. There are often EC Fields 8367larger 8368than one byte that need to be transferred, and it is useful for the EC 8369driver 8370to lock these as a single transaction. This change enables single 8371transfers 8372larger than 8 bits. This effectively changes the access to the EC space 8373from 8374ByteAcc to AnyAcc, and will probably require changes to the host OS 8375Embedded 8376Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 8377bit 8378transfers. Alexey Starikovskiy, Lin Ming 8379 8380Implemented a performance enhancement for namespace search and access. 8381This 8382change enhances the performance of namespace searches and walks by adding 8383a 8384backpointer to the parent in each namespace node. On large namespaces, 8385this 8386change can improve overall ACPI performance by up to 9X. Adding a pointer 8387to 8388each namespace node increases the overall size of the internal namespace 8389by 8390about 5%, since each namespace entry usually consists of both a namespace 8391node and an ACPI operand object. However, this is the first growth of the 8392namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 8393 8394Implemented a performance optimization that reduces the number of 8395namespace 8396walks. On control method exit, only walk the namespace if the method is 8397known 8398to have created namespace objects outside of its local scope. Previously, 8399the 8400entire namespace was traversed on each control method exit. This change 8401can 8402improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 8403Moore. 8404 8405Added support to truncate I/O addresses to 16 bits for Windows 8406compatibility. 8407Some ASL code has been seen in the field that inadvertently has bits set 8408above bit 15. This feature is optional and is enabled if the BIOS 8409requests 8410any Windows OSI strings. It can also be enabled by the host OS. Matthew 8411Garrett, Bob Moore. 8412 8413Added support to limit the maximum time for the ASL Sleep() operator. To 8414prevent accidental deep sleeps, limit the maximum time that Sleep() will 8415actually sleep. Configurable, the default maximum is two seconds. ACPICA 8416bugzilla 854. 8417 8418Added run-time validation support for the _WDG and_WED Microsoft 8419predefined 8420methods. These objects are defined by "Windows Instrumentation", and are 8421not 8422part of the ACPI spec. ACPICA BZ 860. 8423 8424Expanded all statistic counters used during namespace and device 8425initialization from 16 to 32 bits in order to support very large 8426namespaces. 8427 8428Replaced all instances of %d in printf format specifiers with %u since 8429nearly 8430all integers in ACPICA are unsigned. 8431 8432Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 8433returned 8434as AE_NO_HANDLER. 8435 8436Example Code and Data Size: These are the sizes for the OS-independent 8437acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8438debug version of the code includes the debug output trace mechanism and 8439has a 8440much larger code and data size. 8441 8442 Previous Release: 8443 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8444 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8445 Current Release: 8446 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 8447 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 8448 84492) iASL Compiler/Disassembler and Tools: 8450 8451iASL: Added compiler support for the _WDG and_WED Microsoft predefined 8452methods. These objects are defined by "Windows Instrumentation", and are 8453not 8454part of the ACPI spec. ACPICA BZ 860. 8455 8456AcpiExec: added option to disable the memory tracking mechanism. The -dt 8457option will disable the tracking mechanism, which improves performance 8458considerably. 8459 8460AcpiExec: Restructured the command line options into -d (disable) and -e 8461(enable) options. 8462 8463---------------------------------------- 846428 April 2010. Summary of changes for version 20100428: 8465 84661) ACPI CA Core Subsystem: 8467 8468Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 8469including FADT-based and GPE Block Devices, execute any _PRW methods in 8470the 8471new table, and process any _Lxx/_Exx GPE methods in the new table. Any 8472runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 8473immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 8474Devices. Provides compatibility with other ACPI implementations. Two new 8475files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 8476Moore. 8477 8478Fixed a regression introduced in version 20100331 within the table 8479manager 8480where initial table loading could fail. This was introduced in the fix 8481for 8482AcpiReallocateRootTable. Also, renamed some of fields in the table 8483manager 8484data structures to clarify their meaning and use. 8485 8486Fixed a possible allocation overrun during internal object copy in 8487AcpiUtCopySimpleObject. The original code did not correctly handle the 8488case 8489where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 8490847. 8491 8492Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 8493possible access beyond end-of-allocation. Also, now fully validate 8494descriptor 8495(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 8496 8497Example Code and Data Size: These are the sizes for the OS-independent 8498acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8499debug version of the code includes the debug output trace mechanism and 8500has a 8501much larger code and data size. 8502 8503 Previous Release: 8504 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8505 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8506 Current Release: 8507 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 8508 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 8509 85102) iASL Compiler/Disassembler and Tools: 8511 8512iASL: Implemented Min/Max/Len/Gran validation for address resource 8513descriptors. This change implements validation for the address fields 8514that 8515are common to all address-type resource descriptors. These checks are 8516implemented: Checks for valid Min/Max, length within the Min/Max window, 8517valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 8518per 8519table 6-40 in the ACPI 4.0a specification. Also split the large 8520aslrestype1.c 8521and aslrestype2.c files into five new files. ACPICA BZ 840. 8522 8523iASL: Added support for the _Wxx predefined names. This support was 8524missing 8525and these names were not recognized by the compiler as valid predefined 8526names. ACPICA BZ 851. 8527 8528iASL: Added an error for all predefined names that are defined to return 8529no 8530value and thus must be implemented as Control Methods. These include all 8531of 8532the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 8533names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 8534 8535iASL: Implemented the -ts option to emit hex AML data in ASL format, as 8536an 8537ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 8538be 8539dynamically loaded via the Load() operator. Also cleaned up output for 8540the 8541- 8542ta and -tc options. ACPICA BZ 853. 8543 8544Tests: Added a new file with examples of extended iASL error checking. 8545Demonstrates the advanced error checking ability of the iASL compiler. 8546Available at tests/misc/badcode.asl. 8547 8548---------------------------------------- 854931 March 2010. Summary of changes for version 20100331: 8550 85511) ACPI CA Core Subsystem: 8552 8553Completed a major update for the GPE support in order to improve support 8554for 8555shared GPEs and to simplify both host OS and ACPICA code. Added a 8556reference 8557count mechanism to support shared GPEs that require multiple device 8558drivers. 8559Several external interfaces have changed. One external interface has been 8560removed. One new external interface was added. Most of the GPE external 8561interfaces now use the GPE spinlock instead of the events mutex (and the 8562Flags parameter for many GPE interfaces has been removed.) See the 8563updated 8564ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 8565Rafael 8566Wysocki. ACPICA BZ 831. 8567 8568Changed: 8569 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 8570Removed: 8571 AcpiSetGpeType 8572New: 8573 AcpiSetGpe 8574 8575Implemented write support for DataTable operation regions. These regions 8576are 8577defined via the DataTableRegion() operator. Previously, only read support 8578was 8579implemented. The ACPI specification allows DataTableRegions to be 8580read/write, 8581however. 8582 8583Implemented a new subsystem option to force a copy of the DSDT to local 8584memory. Optionally copy the entire DSDT to local memory (instead of 8585simply 8586mapping it.) There are some (albeit very rare) BIOSs that corrupt or 8587replace 8588the original DSDT, creating the need for this option. Default is FALSE, 8589do 8590not copy the DSDT. 8591 8592Implemented detection of a corrupted or replaced DSDT. This change adds 8593support to detect a DSDT that has been corrupted and/or replaced from 8594outside 8595the OS (by firmware). This is typically catastrophic for the system, but 8596has 8597been seen on some machines. Once this problem has been detected, the DSDT 8598copy option can be enabled via system configuration. Lin Ming, Bob Moore. 8599 8600Fixed two problems with AcpiReallocateRootTable during the root table 8601copy. 8602When copying the root table to the new allocation, the length used was 8603incorrect. The new size was used instead of the current table size, 8604meaning 8605too much data was copied. Also, the count of available slots for ACPI 8606tables 8607was not set correctly. Alexey Starikovskiy, Bob Moore. 8608 8609Example Code and Data Size: These are the sizes for the OS-independent 8610acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8611debug version of the code includes the debug output trace mechanism and 8612has a 8613much larger code and data size. 8614 8615 Previous Release: 8616 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8617 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8618 Current Release: 8619 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 8620 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 8621 86222) iASL Compiler/Disassembler and Tools: 8623 8624iASL: Implement limited typechecking for values returned from predefined 8625control methods. The type of any returned static (unnamed) object is now 8626validated. For example, Return(1). ACPICA BZ 786. 8627 8628iASL: Fixed a predefined name object verification regression. Fixes a 8629problem 8630introduced in version 20100304. An error is incorrectly generated if a 8631predefined name is declared as a static named object with a value defined 8632using the keywords "Zero", "One", or "Ones". Lin Ming. 8633 8634iASL: Added Windows 7 support for the -g option (get local ACPI tables) 8635by 8636reducing the requested registry access rights. ACPICA BZ 842. 8637 8638Disassembler: fixed a possible fault when generating External() 8639statements. 8640Introduced in commit ae7d6fd: Properly handle externals with parent- 8641prefix 8642(carat). Fixes a string length allocation calculation. Lin Ming. 8643 8644---------------------------------------- 864504 March 2010. Summary of changes for version 20100304: 8646 86471) ACPI CA Core Subsystem: 8648 8649Fixed a possible problem with the AML Mutex handling function 8650AcpiExReleaseMutex where the function could fault under the very rare 8651condition when the interpreter has blocked, the interpreter lock is 8652released, 8653the interpreter is then reentered via the same thread, and attempts to 8654acquire an AML mutex that was previously acquired. FreeBSD report 140979. 8655Lin 8656Ming. 8657 8658Implemented additional configuration support for the AML "Debug Object". 8659Output from the debug object can now be enabled via a global variable, 8660AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 8661debugging. 8662This debug output is now available in the release version of ACPICA 8663instead 8664of just the debug version. Also, the entire debug output module can now 8665be 8666configured out of the ACPICA build if desired. One new file added, 8667executer/exdebug.c. Lin Ming, Bob Moore. 8668 8669Added header support for the ACPI MCHI table (Management Controller Host 8670Interface Table). This table was added in ACPI 4.0, but the defining 8671document 8672has only recently become available. 8673 8674Standardized output of integer values for ACPICA warnings/errors. Always 8675use 86760x prefix for hex output, always use %u for unsigned integer decimal 8677output. 8678Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 8679400 8680invocations.) These invocations were converted from the original 8681ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 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: 87.1K Code, 18.0K Data, 105.1K Total 8691 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8692 Current Release: 8693 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 8694 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 8695 86962) iASL Compiler/Disassembler and Tools: 8697 8698iASL: Implemented typechecking support for static (non-control method) 8699predefined named objects that are declared with the Name() operator. For 8700example, the type of this object is now validated to be of type Integer: 8701Name(_BBN, 1). This change migrates the compiler to using the core 8702predefined 8703name table instead of maintaining a local version. Added a new file, 8704aslpredef.c. ACPICA BZ 832. 8705 8706Disassembler: Added support for the ACPI 4.0 MCHI table. 8707 8708---------------------------------------- 870921 January 2010. Summary of changes for version 20100121: 8710 87111) ACPI CA Core Subsystem: 8712 8713Added the 2010 copyright to all module headers and signons. This affects 8714virtually every file in the ACPICA core subsystem, the iASL compiler, the 8715tools/utilities, and the test suites. 8716 8717Implemented a change to the AcpiGetDevices interface to eliminate 8718unnecessary 8719invocations of the _STA method. In the case where a specific _HID is 8720requested, do not run _STA until a _HID match is found. This eliminates 8721potentially dozens of _STA calls during a search for a particular 8722device/HID, 8723which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 8724 8725Implemented an additional repair for predefined method return values. 8726Attempt 8727to repair unexpected NULL elements within returned Package objects. 8728Create 8729an 8730Integer of value zero, a NULL String, or a zero-length Buffer as 8731appropriate. 8732ACPICA BZ 818. Lin Ming, Bob Moore. 8733 8734Removed the obsolete ACPI_INTEGER data type. This type was introduced as 8735the 8736code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 8737(with 873864-bit AML integers). It is now obsolete and this change removes it from 8739the 8740ACPICA code base, replaced by UINT64. The original typedef has been 8741retained 8742for now for compatibility with existing device driver code. ACPICA BZ 8743824. 8744 8745Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 8746in 8747the parse tree object. 8748 8749Added additional warning options for the gcc-4 generation. Updated the 8750source 8751accordingly. This includes some code restructuring to eliminate 8752unreachable 8753code, elimination of some gotos, elimination of unused return values, 8754some 8755additional casting, and removal of redundant declarations. 8756 8757Example Code and Data Size: These are the sizes for the OS-independent 8758acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8759debug version of the code includes the debug output trace mechanism and 8760has a 8761much larger code and data size. 8762 8763 Previous Release: 8764 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 8765 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 8766 Current Release: 8767 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 8768 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 8769 87702) iASL Compiler/Disassembler and Tools: 8771 8772No functional changes for this release. 8773 8774---------------------------------------- 877514 December 2009. Summary of changes for version 20091214: 8776 87771) ACPI CA Core Subsystem: 8778 8779Enhanced automatic data type conversions for predefined name repairs. 8780This 8781change expands the automatic repairs/conversions for predefined name 8782return 8783values to make Integers, Strings, and Buffers fully interchangeable. 8784Also, 8785a 8786Buffer can be converted to a Package of Integers if necessary. The 8787nsrepair.c 8788module was completely restructured. Lin Ming, Bob Moore. 8789 8790Implemented automatic removal of null package elements during predefined 8791name 8792repairs. This change will automatically remove embedded and trailing NULL 8793package elements from returned package objects that are defined to 8794contain 8795a 8796variable number of sub-packages. The driver is then presented with a 8797package 8798with no null elements to deal with. ACPICA BZ 819. 8799 8800Implemented a repair for the predefined _FDE and _GTM names. The expected 8801return value for both names is a Buffer of 5 DWORDs. This repair fixes 8802two 8803possible problems (both seen in the field), where a package of integers 8804is 8805returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 8806Kim. 8807 8808Implemented additional module-level code support. This change will 8809properly 8810execute module-level code that is not at the root of the namespace (under 8811a 8812Device object, etc.). Now executes the code within the current scope 8813instead 8814of the root. ACPICA BZ 762. Lin Ming. 8815 8816Fixed possible mutex acquisition errors when running _REG methods. Fixes 8817a 8818problem where mutex errors can occur when running a _REG method that is 8819in 8820the same scope as a method-defined operation region or an operation 8821region 8822under a module-level IF block. This type of code is rare, so the problem 8823has 8824not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 8825 8826Fixed a possible memory leak during module-level code execution. An 8827object 8828could be leaked for each block of executed module-level code if the 8829interpreter slack mode is enabled This change deletes any implicitly 8830returned 8831object from the module-level code block. Lin Ming. 8832 8833Removed messages for successful predefined repair(s). The repair 8834mechanism 8835was considered too wordy. Now, messages are only unconditionally emitted 8836if 8837the return object cannot be repaired. Existing messages for successful 8838repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 8839827. 8840 8841Example Code and Data Size: These are the sizes for the OS-independent 8842acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8843debug version of the code includes the debug output trace mechanism and 8844has a 8845much larger code and data size. 8846 8847 Previous Release: 8848 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 8849 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 8850 Current Release: 8851 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 8852 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 8853 88542) iASL Compiler/Disassembler and Tools: 8855 8856iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 8857files 8858were no longer automatically removed at the termination of the compile. 8859 8860acpiexec: Implemented the -f option to specify default region fill value. 8861This option specifies the value used to initialize buffers that simulate 8862operation regions. Default value is zero. Useful for debugging problems 8863that 8864depend on a specific initial value for a region or field. 8865 8866---------------------------------------- 886712 November 2009. Summary of changes for version 20091112: 8868 88691) ACPI CA Core Subsystem: 8870 8871Implemented a post-order callback to AcpiWalkNamespace. The existing 8872interface only has a pre-order callback. This change adds an additional 8873parameter for a post-order callback which will be more useful for bus 8874scans. 8875ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 8876 8877Modified the behavior of the operation region memory mapping cache for 8878SystemMemory. Ensure that the memory mappings created for operation 8879regions 8880do not cross 4K page boundaries. Crossing a page boundary while mapping 8881regions can cause kernel warnings on some hosts if the pages have 8882different 8883attributes. Such regions are probably BIOS bugs, and this is the 8884workaround. 8885Linux BZ 14445. Lin Ming. 8886 8887Implemented an automatic repair for predefined methods that must return 8888sorted lists. This change will repair (by sorting) packages returned by 8889_ALR, 8890_PSS, and _TSS. Drivers can now assume that the packages are correctly 8891sorted 8892and do not contain NULL package elements. Adds one new file, 8893namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 8894 8895Fixed a possible fault during predefined name validation if a return 8896Package 8897object contains NULL elements. Also adds a warning if a NULL element is 8898followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 8899may 8900include repair or removal of all such NULL elements where possible. 8901 8902Implemented additional module-level executable AML code support. This 8903change 8904will execute module-level code that is not at the root of the namespace 8905(under a Device object, etc.) at table load time. Module-level executable 8906AML 8907code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 8908 8909Implemented a new internal function to create Integer objects. This 8910function 8911simplifies miscellaneous object creation code. ACPICA BZ 823. 8912 8913Reduced the severity of predefined repair messages, Warning to Info. 8914Since 8915the object was successfully repaired, a warning is too severe. Reduced to 8916an 8917info message for now. These messages may eventually be changed to debug- 8918only. 8919ACPICA BZ 812. 8920 8921Example Code and Data Size: These are the sizes for the OS-independent 8922acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8923debug version of the code includes the debug output trace mechanism and 8924has a 8925much larger code and data size. 8926 8927 Previous Release: 8928 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 8929 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 8930 Current Release: 8931 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 8932 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 8933 89342) iASL Compiler/Disassembler and Tools: 8935 8936iASL: Implemented Switch() with While(1) so that Break works correctly. 8937This 8938change correctly implements the Switch operator with a surrounding 8939While(1) 8940so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 8941 8942iASL: Added a message if a package initializer list is shorter than 8943package 8944length. Adds a new remark for a Package() declaration if an initializer 8945list 8946exists, but is shorter than the declared length of the package. Although 8947technically legal, this is probably a coding error and it is seen in the 8948field. ACPICA BZ 815. Lin Ming, Bob Moore. 8949 8950iASL: Fixed a problem where the compiler could fault after the maximum 8951number 8952of errors was reached (200). 8953 8954acpixtract: Fixed a possible warning for pointer cast if the compiler 8955warning 8956level set very high. 8957 8958---------------------------------------- 895913 October 2009. Summary of changes for version 20091013: 8960 89611) ACPI CA Core Subsystem: 8962 8963Fixed a problem where an Operation Region _REG method could be executed 8964more 8965than once. If a custom address space handler is installed by the host 8966before 8967the "initialize operation regions" phase of the ACPICA initialization, 8968any 8969_REG methods for that address space could be executed twice. This change 8970fixes the problem. ACPICA BZ 427. Lin Ming. 8971 8972Fixed a possible memory leak for the Scope() ASL operator. When the exact 8973invocation of "Scope(\)" is executed (change scope to root), one internal 8974operand object was leaked. Lin Ming. 8975 8976Implemented a run-time repair for the _MAT predefined method. If the _MAT 8977return value is defined as a Field object in the AML, and the field 8978size is less than or equal to the default width of an integer (32 or 897964),_MAT 8980can incorrectly return an Integer instead of a Buffer. ACPICA now 8981automatically repairs this problem. ACPICA BZ 810. 8982 8983Implemented a run-time repair for the _BIF and _BIX predefined methods. 8984The 8985"OEM Information" field is often incorrectly returned as an Integer with 8986value zero if the field is not supported by the platform. This is due to 8987an 8988ambiguity in the ACPI specification. The field should always be a string. 8989ACPICA now automatically repairs this problem by returning a NULL string 8990within the returned Package. ACPICA BZ 807. 8991 8992Example Code and Data Size: These are the sizes for the OS-independent 8993acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8994debug version of the code includes the debug output trace mechanism and 8995has a 8996much larger code and data size. 8997 8998 Previous Release: 8999 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 9000 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 9001 Current Release: 9002 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 9003 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 9004 90052) iASL Compiler/Disassembler and Tools: 9006 9007Disassembler: Fixed a problem where references to external symbols that 9008contained one or more parent-prefixes (carats) were not handled 9009correctly, 9010possibly causing a fault. ACPICA BZ 806. Lin Ming. 9011 9012Disassembler: Restructured the code so that all functions that handle 9013external symbols are in a single module. One new file is added, 9014common/dmextern.c. 9015 9016AML Debugger: Added a max count argument for the Batch command (which 9017executes multiple predefined methods within the namespace.) 9018 9019iASL: Updated the compiler documentation (User Reference.) Available at 9020http://www.acpica.org/documentation/. ACPICA BZ 750. 9021 9022AcpiXtract: Updated for Lint and other formatting changes. Close all open 9023files. 9024 9025---------------------------------------- 902603 September 2009. Summary of changes for version 20090903: 9027 90281) ACPI CA Core Subsystem: 9029 9030For Windows Vista compatibility, added the automatic execution of an _INI 9031method located at the namespace root (\_INI). This method is executed at 9032table load time. This support is in addition to the automatic execution 9033of 9034\_SB._INI. Lin Ming. 9035 9036Fixed a possible memory leak in the interpreter for AML package objects 9037if 9038the package initializer list is longer than the defined size of the 9039package. 9040This apparently can only happen if the BIOS changes the package size on 9041the 9042fly (seen in a _PSS object), as ASL compilers do not allow this. The 9043interpreter will truncate the package to the defined size (and issue an 9044error 9045message), but previously could leave the extra objects undeleted if they 9046were 9047pre-created during the argument processing (such is the case if the 9048package 9049consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 9050 9051Fixed a problem seen when a Buffer or String is stored to itself via ASL. 9052This has been reported in the field. Previously, ACPICA would zero out 9053the 9054buffer/string. Now, the operation is treated as a noop. Provides Windows 9055compatibility. ACPICA BZ 803. Lin Ming. 9056 9057Removed an extraneous error message for ASL constructs of the form 9058Store(LocalX,LocalX) when LocalX is uninitialized. These curious 9059statements 9060are seen in many BIOSs and are once again treated as NOOPs and no error 9061is 9062emitted when they are encountered. ACPICA BZ 785. 9063 9064Fixed an extraneous warning message if a _DSM reserved method returns a 9065Package object. _DSM can return any type of object, so validation on the 9066return type cannot be performed. ACPICA BZ 802. 9067 9068Example Code and Data Size: These are the sizes for the OS-independent 9069acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9070debug version of the code includes the debug output trace mechanism and 9071has a 9072much larger code and data size. 9073 9074 Previous Release: 9075 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 9076 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 9077 Current Release: 9078 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 9079 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 9080 90812) iASL Compiler/Disassembler and Tools: 9082 9083iASL: Fixed a problem with the use of the Alias operator and Resource 9084Templates. The correct alias is now constructed and no error is emitted. 9085ACPICA BZ 738. 9086 9087iASL: Implemented the -I option to specify additional search directories 9088for 9089include files. Allows multiple additional search paths for include files. 9090Directories are searched in the order specified on the command line 9091(after 9092the local directory is searched.) ACPICA BZ 800. 9093 9094iASL: Fixed a problem where the full pathname for include files was not 9095emitted for warnings/errors. This caused the IDE support to not work 9096properly. ACPICA BZ 765. 9097 9098iASL: Implemented the -@ option to specify a Windows-style response file 9099containing additional command line options. ACPICA BZ 801. 9100 9101AcpiExec: Added support to load multiple AML files simultaneously (such 9102as 9103a 9104DSDT and multiple SSDTs). Also added support for wildcards within the AML 9105pathname. These features allow all machine tables to be easily loaded and 9106debugged together. ACPICA BZ 804. 9107 9108Disassembler: Added missing support for disassembly of HEST table Error 9109Bank 9110subtables. 9111 9112---------------------------------------- 911330 July 2009. Summary of changes for version 20090730: 9114 9115The ACPI 4.0 implementation for ACPICA is complete with this release. 9116 91171) ACPI CA Core Subsystem: 9118 9119ACPI 4.0: Added header file support for all new and changed ACPI tables. 9120Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 9121new 9122for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 9123BERT, 9124EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 9125There 9126have been some ACPI 4.0 changes to other existing tables. Split the large 9127actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 9128 9129ACPI 4.0: Implemented predefined name validation for all new names. There 9130are 913131 new names in ACPI 4.0. The predefined validation module was split into 9132two 9133files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 9134 9135Implemented support for so-called "module-level executable code". This is 9136executable AML code that exists outside of any control method and is 9137intended 9138to be executed at table load time. Although illegal since ACPI 2.0, this 9139type 9140of code still exists and is apparently still being created. Blocks of 9141this 9142code are now detected and executed as intended. Currently, the code 9143blocks 9144must exist under either an If, Else, or While construct; these are the 9145typical cases seen in the field. ACPICA BZ 762. Lin Ming. 9146 9147Implemented an automatic dynamic repair for predefined names that return 9148nested Package objects. This applies to predefined names that are defined 9149to 9150return a variable-length Package of sub-packages. If the number of sub- 9151packages is one, BIOS code is occasionally seen that creates a simple 9152single 9153package with no sub-packages. This code attempts to fix the problem by 9154wrapping a new package object around the existing package. These methods 9155can 9156be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 9157BZ 9158790. 9159 9160Fixed a regression introduced in 20090625 for the AcpiGetDevices 9161interface. 9162The _HID/_CID matching was broken and no longer matched IDs correctly. 9163ACPICA 9164BZ 793. 9165 9166Fixed a problem with AcpiReset where the reset would silently fail if the 9167register was one of the protected I/O ports. AcpiReset now bypasses the 9168port 9169validation mechanism. This may eventually be driven into the 9170AcpiRead/Write 9171interfaces. 9172 9173Fixed a regression related to the recent update of the AcpiRead/Write 9174interfaces. A sleep/suspend could fail if the optional PM2 Control 9175register 9176does not exist during an attempt to write the Bus Master Arbitration bit. 9177(However, some hosts already delete the code that writes this bit, and 9178the 9179code may in fact be obsolete at this date.) ACPICA BZ 799. 9180 9181Fixed a problem where AcpiTerminate could fault if inadvertently called 9182twice 9183in succession. ACPICA BZ 795. 9184 9185Example Code and Data Size: These are the sizes for the OS-independent 9186acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9187debug version of the code includes the debug output trace mechanism and 9188has a 9189much larger code and data size. 9190 9191 Previous Release: 9192 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 9193 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 9194 Current Release: 9195 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 9196 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 9197 91982) iASL Compiler/Disassembler and Tools: 9199 9200ACPI 4.0: Implemented disassembler support for all new ACPI tables and 9201changes to existing tables. ACPICA BZ 775. 9202 9203---------------------------------------- 920425 June 2009. Summary of changes for version 20090625: 9205 9206The ACPI 4.0 Specification was released on June 16 and is available at 9207www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 9208continue for the next few releases. 9209 92101) ACPI CA Core Subsystem: 9211 9212ACPI 4.0: Implemented interpreter support for the IPMI operation region 9213address space. Includes support for bi-directional data buffers and an 9214IPMI 9215address space handler (to be installed by an IPMI device driver.) ACPICA 9216BZ 9217773. Lin Ming. 9218 9219ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 9220Includes 9221support in both the header files and the disassembler. 9222 9223Completed a major update for the AcpiGetObjectInfo external interface. 9224Changes include: 9225 - Support for variable, unlimited length HID, UID, and CID strings. 9226 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 9227etc.) 9228 - Call the _SxW power methods on behalf of a device object. 9229 - Determine if a device is a PCI root bridge. 9230 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 9231These changes will require an update to all callers of this interface. 9232See 9233the updated ACPICA Programmer Reference for details. One new source file 9234has 9235been added - utilities/utids.c. ACPICA BZ 368, 780. 9236 9237Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 9238transfers. The Value parameter has been extended from 32 bits to 64 bits 9239in 9240order to support new ACPI 4.0 tables. These changes will require an 9241update 9242to 9243all callers of these interfaces. See the ACPICA Programmer Reference for 9244details. ACPICA BZ 768. 9245 9246Fixed several problems with AcpiAttachData. The handler was not invoked 9247when 9248the host node was deleted. The data sub-object was not automatically 9249deleted 9250when the host node was deleted. The interface to the handler had an 9251unused 9252parameter, this was removed. ACPICA BZ 778. 9253 9254Enhanced the function that dumps ACPI table headers. All non-printable 9255characters in the string fields are now replaced with '?' (Signature, 9256OemId, 9257OemTableId, and CompilerId.) ACPI tables with non-printable characters in 9258these fields are occasionally seen in the field. ACPICA BZ 788. 9259 9260Fixed a problem with predefined method repair code where the code that 9261attempts to repair/convert an object of incorrect type is only executed 9262on 9263the first time the predefined method is called. The mechanism that 9264disables 9265warnings on subsequent calls was interfering with the repair mechanism. 9266ACPICA BZ 781. 9267 9268Fixed a possible memory leak in the predefined validation/repair code 9269when 9270a 9271buffer is automatically converted to an expected string object. 9272 9273Removed obsolete 16-bit files from the distribution and from the current 9274git 9275tree head. ACPICA BZ 776. 9276 9277Example Code and Data Size: These are the sizes for the OS-independent 9278acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9279debug version of the code includes the debug output trace mechanism and 9280has a 9281much larger code and data size. 9282 9283 Previous Release: 9284 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9285 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9286 Current Release: 9287 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 9288 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 9289 92902) iASL Compiler/Disassembler and Tools: 9291 9292ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 9293operation region keyword. ACPICA BZ 771, 772. Lin Ming. 9294 9295ACPI 4.0: iASL - implemented compile-time validation support for all new 9296predefined names and control methods (31 total). ACPICA BZ 769. 9297 9298---------------------------------------- 929921 May 2009. Summary of changes for version 20090521: 9300 93011) ACPI CA Core Subsystem: 9302 9303Disabled the preservation of the SCI enable bit in the PM1 control 9304register. 9305The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 9306to 9307be 9308a "preserved" bit - "OSPM always preserves this bit position", section 93094.7.3.2.1. However, some machines fail if this bit is in fact preserved 9310because the bit needs to be explicitly set by the OS as a workaround. No 9311machines fail if the bit is not preserved. Therefore, ACPICA no longer 9312attempts to preserve this bit. 9313 9314Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 9315incorrectly formed _PRT package could cause a fault. Added validation to 9316ensure that each package element is actually a sub-package. 9317 9318Implemented a new interface to install or override a single control 9319method, 9320AcpiInstallMethod. This interface is useful when debugging in order to 9321repair 9322an existing method or to install a missing method without having to 9323override 9324the entire ACPI table. See the ACPICA Programmer Reference for use and 9325examples. Lin Ming, Bob Moore. 9326 9327Fixed several reference count issues with the DdbHandle object that is 9328created from a Load or LoadTable operator. Prevent premature deletion of 9329the 9330object. Also, mark the object as invalid once the table has been 9331unloaded. 9332This is needed because the handle itself may not be deleted after the 9333table 9334unload, depending on whether it has been stored in a named object by the 9335caller. Lin Ming. 9336 9337Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 9338mutexes of the same sync level are acquired but then not released in 9339strict 9340opposite order, the internally maintained Current Sync Level becomes 9341confused 9342and can cause subsequent execution errors. ACPICA BZ 471. 9343 9344Changed the allowable release order for ASL mutex objects. The ACPI 4.0 9345specification has been changed to make the SyncLevel for mutex objects 9346more 9347useful. When releasing a mutex, the SyncLevel of the mutex must now be 9348the 9349same as the current sync level. This makes more sense than the previous 9350rule 9351(SyncLevel less than or equal). This change updates the code to match the 9352specification. 9353 9354Fixed a problem with the local version of the AcpiOsPurgeCache function. 9355The 9356(local) cache must be locked during all cache object deletions. Andrew 9357Baumann. 9358 9359Updated the Load operator to use operation region interfaces. This 9360replaces 9361direct memory mapping with region access calls. Now, all region accesses 9362go 9363through the installed region handler as they should. 9364 9365Simplified and optimized the NsGetNextNode function. Reduced parameter 9366count 9367and reduced code for this frequently used function. 9368 9369Example Code and Data Size: These are the sizes for the OS-independent 9370acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9371debug version of the code includes the debug output trace mechanism and 9372has a 9373much larger code and data size. 9374 9375 Previous Release: 9376 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9377 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9378 Current Release: 9379 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 9380 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 9381 93822) iASL Compiler/Disassembler and Tools: 9383 9384Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 9385problems 9386with sub-table disassembly and handling invalid sub-tables. Attempt 9387recovery 9388after an invalid sub-table ID. 9389 9390---------------------------------------- 939122 April 2009. Summary of changes for version 20090422: 9392 93931) ACPI CA Core Subsystem: 9394 9395Fixed a compatibility issue with the recently released I/O port 9396protection 9397mechanism. For windows compatibility, 1) On a port protection violation, 9398simply ignore the request and do not return an exception (allow the 9399control 9400method to continue execution.) 2) If only part of the request overlaps a 9401protected port, read/write the individual ports that are not protected. 9402Linux 9403BZ 13036. Lin Ming 9404 9405Enhanced the execution of the ASL/AML BreakPoint operator so that it 9406actually 9407breaks into the AML debugger if the debugger is present. This matches the 9408ACPI-defined behavior. 9409 9410Fixed several possible warnings related to the use of the configurable 9411ACPI_THREAD_ID. This type can now be configured as either an integer or a 9412pointer with no warnings. Also fixes several warnings in printf-like 9413statements for the 64-bit build when the type is configured as a pointer. 9414ACPICA BZ 766, 767. 9415 9416Fixed a number of possible warnings when compiling with gcc 4+ (depending 9417on 9418warning options.) Examples include printf formats, aliasing, unused 9419globals, 9420missing prototypes, missing switch default statements, use of non-ANSI 9421library functions, use of non-ANSI constructs. See generate/unix/Makefile 9422for 9423a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 9424 9425Example Code and Data Size: These are the sizes for the OS-independent 9426acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9427debug version of the code includes the debug output trace mechanism and 9428has a 9429much larger code and data size. 9430 9431 Previous Release: 9432 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9433 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9434 Current Release: 9435 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 9436 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 9437 94382) iASL Compiler/Disassembler and Tools: 9439 9440iASL: Fixed a generation warning from Bison 2.3 and fixed several 9441warnings 9442on 9443the 64-bit build. 9444 9445iASL: Fixed a problem where the Unix/Linux versions of the compiler could 9446not 9447correctly digest Windows/DOS formatted files (with CR/LF). 9448 9449iASL: Added a new option for "quiet mode" (-va) that produces only the 9450compilation summary, not individual errors and warnings. Useful for large 9451batch compilations. 9452 9453AcpiExec: Implemented a new option (-z) to enable a forced 9454semaphore/mutex 9455timeout that can be used to detect hang conditions during execution of 9456AML 9457code (includes both internal semaphores and AML-defined mutexes and 9458events.) 9459 9460Added new makefiles for the generation of acpica in a generic unix-like 9461environment. These makefiles are intended to generate the acpica tools 9462and 9463utilities from the original acpica git source tree structure. 9464 9465Test Suites: Updated and cleaned up the documentation files. Updated the 9466copyrights to 2009, affecting all source files. Use the new version of 9467iASL 9468with quiet mode. Increased the number of available semaphores in the 9469Windows 9470OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 9471added 9472an alternate implementation of the semaphore timeout to allow aslts to 9473execute fully on Cygwin. 9474 9475---------------------------------------- 947620 March 2009. Summary of changes for version 20090320: 9477 94781) ACPI CA Core Subsystem: 9479 9480Fixed a possible race condition between AcpiWalkNamespace and dynamic 9481table 9482unloads. Added a reader/writer locking mechanism to allow multiple 9483concurrent 9484namespace walks (readers), but block a dynamic table unload until it can 9485gain 9486exclusive write access to the namespace. This fixes a problem where a 9487table 9488unload could (possibly catastrophically) delete the portion of the 9489namespace 9490that is currently being examined by a walk. Adds a new file, utlock.c, 9491that 9492implements the reader/writer lock mechanism. ACPICA BZ 749. 9493 9494Fixed a regression introduced in version 20090220 where a change to the 9495FADT 9496handling could cause the ACPICA subsystem to access non-existent I/O 9497ports. 9498 9499Modified the handling of FADT register and table (FACS/DSDT) addresses. 9500The 9501FADT can contain both 32-bit and 64-bit versions of these addresses. 9502Previously, the 64-bit versions were favored, meaning that if both 32 and 950364 9504versions were valid, but not equal, the 64-bit version was used. This was 9505found to cause some machines to fail. Now, in this case, the 32-bit 9506version 9507is used instead. This now matches the Windows behavior. 9508 9509Implemented a new mechanism to protect certain I/O ports. Provides 9510Microsoft 9511compatibility and protects the standard PC I/O ports from access via AML 9512code. Adds a new file, hwvalid.c 9513 9514Fixed a possible extraneous warning message from the FADT support. The 9515message warns of a 32/64 length mismatch between the legacy and GAS 9516definitions for a register. 9517 9518Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 9519is 9520made obsolete by the port protection mechanism above. It was previously 9521used 9522to validate the entire address range of an operation region, which could 9523be 9524incorrect if the range included illegal ports, but fields within the 9525operation region did not actually access those ports. Validation is now 9526performed on a per-field basis instead of the entire region. 9527 9528Modified the handling of the PM1 Status Register ignored bit (bit 11.) 9529Ignored bits must be "preserved" according to the ACPI spec. Usually, 9530this 9531means a read/modify/write when writing to the register. However, for 9532status 9533registers, writing a one means clear the event. Writing a zero means 9534preserve 9535the event (do not clear.) This behavior is clarified in the ACPI 4.0 9536spec, 9537and the ACPICA code now simply always writes a zero to the ignored bit. 9538 9539Modified the handling of ignored bits for the PM1 A/B Control Registers. 9540As 9541per the ACPI specification, for the control registers, preserve 9542(read/modify/write) all bits that are defined as either reserved or 9543ignored. 9544 9545Updated the handling of write-only bits in the PM1 A/B Control Registers. 9546When reading the register, zero the write-only bits as per the ACPI spec. 9547ACPICA BZ 443. Lin Ming. 9548 9549Removed "Linux" from the list of supported _OSI strings. Linux no longer 9550wants to reply true to this request. The Windows strings are the only 9551paths 9552through the AML that are tested and known to work properly. 9553 9554 Previous Release: 9555 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9556 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9557 Current Release: 9558 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 9559 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 9560 95612) iASL Compiler/Disassembler and Tools: 9562 9563Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 9564and 9565aetables.c 9566 9567---------------------------------------- 956820 February 2009. Summary of changes for version 20090220: 9569 95701) ACPI CA Core Subsystem: 9571 9572Optimized the ACPI register locking. Removed locking for reads from the 9573ACPI 9574bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 9575is 9576not required when reading the single-bit registers. The 9577AcpiGetRegisterUnlocked function is no longer needed and has been 9578removed. 9579This will improve performance for reads on these registers. ACPICA BZ 9580760. 9581 9582Fixed the parameter validation for AcpiRead/Write. Now return 9583AE_BAD_PARAMETER if the input register pointer is null, and 9584AE_BAD_ADDRESS 9585if 9586the register has an address of zero. Previously, these cases simply 9587returned 9588AE_OK. For optional registers such as PM1B status/enable/control, the 9589caller 9590should check for a valid register address before calling. ACPICA BZ 748. 9591 9592Renamed the external ACPI bit register access functions. Renamed 9593AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 9594functions. The new names are AcpiReadBitRegister and 9595AcpiWriteBitRegister. 9596Also, restructured the code for these functions by simplifying the code 9597path 9598and condensing duplicate code to reduce code size. 9599 9600Added new functions to transparently handle the possibly split PM1 A/B 9601registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 9602functions 9603now handle the split registers for PM1 Status, Enable, and Control. 9604ACPICA 9605BZ 9606746. 9607 9608Added a function to handle the PM1 control registers, 9609AcpiHwWritePm1Control. 9610This function writes both of the PM1 control registers (A/B). These 9611registers 9612are different than the PM1 A/B status and enable registers in that 9613different 9614values can be written to the A/B registers. Most notably, the SLP_TYP 9615bits 9616can be different, as per the values returned from the _Sx predefined 9617methods. 9618 9619Removed an extra register write within AcpiHwClearAcpiStatus. This 9620function 9621was writing an optional PM1B status register twice. The existing call to 9622the 9623low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 9624A/B 9625register. ACPICA BZ 751. 9626 9627Split out the PM1 Status registers from the FADT. Added new globals for 9628these 9629registers (A/B), similar to the way the PM1 Enable registers are handled. 9630Instead of overloading the FADT Event Register blocks. This makes the 9631code 9632clearer and less prone to error. 9633 9634Fixed the warning message for when the platform contains too many ACPI 9635tables 9636for the default size of the global root table data structure. The 9637calculation 9638for the truncation value was incorrect. 9639 9640Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 9641obsolete macro, since it is now a simple reference to ->common.type. 9642There 9643were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 9644 9645Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 9646TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 9647simply SLEEP_TYPE. ACPICA BZ 754. 9648 9649Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 9650function is only needed on 64-bit host operating systems and is thus not 9651included for 32-bit hosts. 9652 9653Debug output: print the input and result for invocations of the _OSI 9654reserved 9655control method via the ACPI_LV_INFO debug level. Also, reduced some of 9656the 9657verbosity of this debug level. Len Brown. 9658 9659Example Code and Data Size: These are the sizes for the OS-independent 9660acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9661debug version of the code includes the debug output trace mechanism and 9662has a 9663much larger code and data size. 9664 9665 Previous Release: 9666 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9667 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9668 Current Release: 9669 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 9670 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 9671 96722) iASL Compiler/Disassembler and Tools: 9673 9674Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 9675various legal performance profiles. 9676 9677---------------------------------------- 967823 January 2009. Summary of changes for version 20090123: 9679 96801) ACPI CA Core Subsystem: 9681 9682Added the 2009 copyright to all module headers and signons. This affects 9683virtually every file in the ACPICA core subsystem, the iASL compiler, and 9684the tools/utilities. 9685 9686Implemented a change to allow the host to override any ACPI table, 9687including 9688dynamically loaded tables. Previously, only the DSDT could be replaced by 9689the 9690host. With this change, the AcpiOsTableOverride interface is called for 9691each 9692table found in the RSDT/XSDT during ACPICA initialization, and also 9693whenever 9694a table is dynamically loaded via the AML Load operator. 9695 9696Updated FADT flag definitions, especially the Boot Architecture flags. 9697 9698Debugger: For the Find command, automatically pad the input ACPI name 9699with 9700underscores if the name is shorter than 4 characters. This enables a 9701match 9702with the actual namespace entry which is itself padded with underscores. 9703 9704Example Code and Data Size: These are the sizes for the OS-independent 9705acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9706debug version of the code includes the debug output trace mechanism and 9707has a 9708much larger code and data size. 9709 9710 Previous Release: 9711 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 9712 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 9713 Current Release: 9714 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 9715 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 9716 97172) iASL Compiler/Disassembler and Tools: 9718 9719Fix build error under Bison-2.4. 9720 9721Disassembler: Enhanced FADT support. Added decoding of the Boot 9722Architecture 9723flags. Now decode all flags, regardless of the FADT version. Flag output 9724includes the FADT version which first defined each flag. 9725 9726The iASL -g option now dumps the RSDT to a file (in addition to the FADT 9727and 9728DSDT). Windows only. 9729 9730---------------------------------------- 973104 December 2008. Summary of changes for version 20081204: 9732 97331) ACPI CA Core Subsystem: 9734 9735The ACPICA Programmer Reference has been completely updated and revamped 9736for 9737this release. This includes updates to the external interfaces, OSL 9738interfaces, the overview sections, and the debugger reference. 9739 9740Several new ACPICA interfaces have been implemented and documented in the 9741programmer reference: 9742AcpiReset - Writes the reset value to the FADT-defined reset register. 9743AcpiDisableAllGpes - Disable all available GPEs. 9744AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 9745AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 9746AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 9747AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 9748AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 9749 9750Most of the public ACPI hardware-related interfaces have been moved to a 9751new 9752file, components/hardware/hwxface.c 9753 9754Enhanced the FADT parsing and low-level ACPI register access: The ACPI 9755register lengths within the FADT are now used, and the low level ACPI 9756register access no longer hardcodes the ACPI register lengths. Given that 9757there may be some risk in actually trusting the FADT register lengths, a 9758run- 9759time option was added to fall back to the default hardcoded lengths if 9760the 9761FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 9762option is set to true for now, and a warning is issued if a suspicious 9763FADT 9764register length is overridden with the default value. 9765 9766Fixed a reference count issue in NsRepairObject. This problem was 9767introduced 9768in version 20081031 as part of a fix to repair Buffer objects within 9769Packages. Lin Ming. 9770 9771Added semaphore support to the Linux/Unix application OS-services layer 9772(OSL). ACPICA BZ 448. Lin Ming. 9773 9774Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 9775will 9776be implemented in the OSL, or will binary semaphores be used instead. 9777 9778Example Code and Data Size: These are the sizes for the OS-independent 9779acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9780debug version of the code includes the debug output trace mechanism and 9781has a 9782much larger code and data size. 9783 9784 Previous Release: 9785 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 9786 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 9787 Current Release: 9788 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 9789 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 9790 97912) iASL Compiler/Disassembler and Tools: 9792 9793iASL: Completed the '-e' option to include additional ACPI tables in 9794order 9795to 9796aid with disassembly and External statement generation. ACPICA BZ 742. 9797Lin 9798Ming. 9799 9800iASL: Removed the "named object in while loop" error. The compiler cannot 9801determine how many times a loop will execute. ACPICA BZ 730. 9802 9803Disassembler: Implemented support for FADT revision 2 (MS extension). 9804ACPICA 9805BZ 743. 9806 9807Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 9808MCFG). 9809 9810---------------------------------------- 981131 October 2008. Summary of changes for version 20081031: 9812 98131) ACPI CA Core Subsystem: 9814 9815Restructured the ACPICA header files into public/private. acpi.h now 9816includes 9817only the "public" acpica headers. All other acpica headers are "private" 9818and 9819should not be included by acpica users. One new file, accommon.h is used 9820to 9821include the commonly used private headers for acpica code generation. 9822Future 9823plans include moving all private headers to a new subdirectory. 9824 9825Implemented an automatic Buffer->String return value conversion for 9826predefined ACPI methods. For these methods (such as _BIF), added 9827automatic 9828conversion for return objects that are required to be a String, but a 9829Buffer 9830was found instead. This can happen when reading string battery data from 9831an 9832operation region, because it used to be difficult to convert the data 9833from 9834buffer to string from within the ASL. Ensures that the host OS is 9835provided 9836with a valid null-terminated string. Linux BZ 11822. 9837 9838Updated the FACS waking vector interfaces. Split 9839AcpiSetFirmwareWakingVector 9840into two: one for the 32-bit vector, another for the 64-bit vector. This 9841is 9842required because the host OS must setup the wake much differently for 9843each 9844vector (real vs. protected mode, etc.) and the interface itself should 9845not 9846be 9847deciding which vector to use. Also, eliminated the 9848GetFirmwareWakingVector 9849interface, as it served no purpose (only the firmware reads the vector, 9850OS 9851only writes the vector.) ACPICA BZ 731. 9852 9853Implemented a mechanism to escape infinite AML While() loops. Added a 9854loop 9855counter to force exit from AML While loops if the count becomes too 9856large. 9857This can occur in poorly written AML when the hardware does not respond 9858within a while loop and the loop does not implement a timeout. The 9859maximum 9860loop count is configurable. A new exception code is returned when a loop 9861is 9862broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 9863 9864Optimized the execution of AML While loops. Previously, a control state 9865object was allocated and freed for each execution of the loop. The 9866optimization is to simply reuse the control state for each iteration. 9867This 9868speeds up the raw loop execution time by about 5%. 9869 9870Enhanced the implicit return mechanism. For Windows compatibility, return 9871an 9872implicit integer of value zero for methods that contain no executable 9873code. 9874Such methods are seen in the field as stubs (presumably), and can cause 9875drivers to fail if they expect a return value. Lin Ming. 9876 9877Allow multiple backslashes as root prefixes in namepaths. In a fully 9878qualified namepath, allow multiple backslash prefixes. This can happen 9879(and 9880is seen in the field) because of the use of a double-backslash in strings 9881(since backslash is the escape character) causing confusion. ACPICA BZ 9882739 9883Lin Ming. 9884 9885Emit a warning if two different FACS or DSDT tables are discovered in the 9886FADT. Checks if there are two valid but different addresses for the FACS 9887and 9888DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 9889 9890Consolidated the method argument count validation code. Merged the code 9891that 9892validates control method argument counts into the predefined validation 9893module. Eliminates possible multiple warnings for incorrect argument 9894counts. 9895 9896Implemented ACPICA example code. Includes code for ACPICA initialization, 9897handler installation, and calling a control method. Available at 9898source/tools/examples. 9899 9900Added a global pointer for FACS table to simplify internal FACS access. 9901Use 9902the global pointer instead of using AcpiGetTableByIndex for each FACS 9903access. 9904This simplifies the code for the Global Lock and the Firmware Waking 9905Vector(s). 9906 9907Example Code and Data Size: These are the sizes for the OS-independent 9908acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9909debug version of the code includes the debug output trace mechanism and 9910has a 9911much larger code and data size. 9912 9913 Previous Release: 9914 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 9915 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 9916 Current Release: 9917 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 9918 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 9919 99202) iASL Compiler/Disassembler and Tools: 9921 9922iASL: Improved disassembly of external method calls. Added the -e option 9923to 9924allow the inclusion of additional ACPI tables to help with the 9925disassembly 9926of 9927method invocations and the generation of external declarations during the 9928disassembly. Certain external method invocations cannot be disassembled 9929properly without the actual declaration of the method. Use the -e option 9930to 9931include the table where the external method(s) are actually declared. 9932Most 9933useful for disassembling SSDTs that make method calls back to the master 9934DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 9935-d 9936-e dsdt.aml ssdt1.aml 9937 9938iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 9939problem where the use of an alias within a namepath would result in a not 9940found error or cause the compiler to fault. Also now allows forward 9941references from the Alias operator itself. ACPICA BZ 738. 9942 9943---------------------------------------- 994426 September 2008. Summary of changes for version 20080926: 9945 99461) ACPI CA Core Subsystem: 9947 9948Designed and implemented a mechanism to validate predefined ACPI methods 9949and 9950objects. This code validates the predefined ACPI objects (objects whose 9951names 9952start with underscore) that appear in the namespace, at the time they are 9953evaluated. The argument count and the type of the returned object are 9954validated against the ACPI specification. The purpose of this validation 9955is 9956to detect problems with the BIOS-implemented predefined ACPI objects 9957before 9958the results are returned to the ACPI-related drivers. Future enhancements 9959may 9960include actual repair of incorrect return objects where possible. Two new 9961files are nspredef.c and acpredef.h. 9962 9963Fixed a fault in the AML parser if a memory allocation fails during the 9964Op 9965completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 9966 9967Fixed an issue with implicit return compatibility. This change improves 9968the 9969implicit return mechanism to be more compatible with the MS interpreter. 9970Lin 9971Ming, ACPICA BZ 349. 9972 9973Implemented support for zero-length buffer-to-string conversions. Allow 9974zero 9975length strings during interpreter buffer-to-string conversions. For 9976example, 9977during the ToDecimalString and ToHexString operators, as well as implicit 9978conversions. Fiodor Suietov, ACPICA BZ 585. 9979 9980Fixed two possible memory leaks in the error exit paths of 9981AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 9982are 9983similar in that they use a stack of state objects in order to eliminate 9984recursion. The stack must be fully unwound and deallocated if an error 9985occurs. Lin Ming. ACPICA BZ 383. 9986 9987Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 9988global 9989ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 9990Moore ACPICA BZ 442. 9991 9992Removed the obsolete version number in module headers. Removed the 9993"$Revision" number that appeared in each module header. This version 9994number 9995was useful under SourceSafe and CVS, but has no meaning under git. It is 9996not 9997only incorrect, it could also be misleading. 9998 9999Example Code and Data Size: These are the sizes for the OS-independent 10000acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10001debug version of the code includes the debug output trace mechanism and 10002has a 10003much larger code and data size. 10004 10005 Previous Release: 10006 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10007 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 10008 Current Release: 10009 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 10010 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 10011 10012---------------------------------------- 1001329 August 2008. Summary of changes for version 20080829: 10014 100151) ACPI CA Core Subsystem: 10016 10017Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 10018Reference. Changes include the elimination of cheating on the Object 10019field 10020for the DdbHandle subtype, addition of a reference class field to 10021differentiate the various reference types (instead of an AML opcode), and 10022the 10023cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 10024 10025Reduce an error to a warning for an incorrect method argument count. 10026Previously aborted with an error if too few arguments were passed to a 10027control method via the external ACPICA interface. Now issue a warning 10028instead 10029and continue. Handles the case where the method inadvertently declares 10030too 10031many arguments, but does not actually use the extra ones. Applies mainly 10032to 10033the predefined methods. Lin Ming. Linux BZ 11032. 10034 10035Disallow the evaluation of named object types with no intrinsic value. 10036Return 10037AE_TYPE for objects that have no value and therefore evaluation is 10038undefined: 10039Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 10040of 10041these types were allowed, but an exception would be generated at some 10042point 10043during the evaluation. Now, the error is generated up front. 10044 10045Fixed a possible memory leak in the AcpiNsGetExternalPathname function 10046(nsnames.c). Fixes a leak in the error exit path. 10047 10048Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 10049debug 10050levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 10051ACPI_EXCEPTION 10052interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 10053ACPI_LV_EVENTS. 10054 10055Removed obsolete and/or unused exception codes from the acexcep.h header. 10056There is the possibility that certain device drivers may be affected if 10057they 10058use any of these exceptions. 10059 10060The ACPICA documentation has been added to the public git source tree, 10061under 10062acpica/documents. Included are the ACPICA programmer reference, the iASL 10063compiler reference, and the changes.txt release logfile. 10064 10065Example Code and Data Size: These are the sizes for the OS-independent 10066acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10067debug version of the code includes the debug output trace mechanism and 10068has a 10069much larger code and data size. 10070 10071 Previous Release: 10072 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10073 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 10074 Current Release: 10075 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10076 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 10077 100782) iASL Compiler/Disassembler and Tools: 10079 10080Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 10081defines _SCP with 3 arguments. Previous versions defined it with only 1 10082argument. iASL now allows both definitions. 10083 10084iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 10085zero- 10086length subtables when disassembling ACPI tables. Also fixed a couple of 10087errors where a full 16-bit table type field was not extracted from the 10088input 10089properly. 10090 10091acpisrc: Improve comment counting mechanism for generating source code 10092statistics. Count first and last lines of multi-line comments as 10093whitespace, 10094not comment lines. Handle Linux legal header in addition to standard 10095acpica 10096header. 10097 10098---------------------------------------- 10099 1010029 July 2008. Summary of changes for version 20080729: 10101 101021) ACPI CA Core Subsystem: 10103 10104Fix a possible deadlock in the GPE dispatch. Remove call to 10105AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 10106attempt 10107to acquire the GPE lock but can deadlock since the GPE lock is already 10108held 10109at dispatch time. This code was introduced in version 20060831 as a 10110response 10111to Linux BZ 6881 and has since been removed from Linux. 10112 10113Add a function to dereference returned reference objects. Examines the 10114return 10115object from a call to AcpiEvaluateObject. Any Index or RefOf references 10116are 10117automatically dereferenced in an attempt to return something useful 10118(these 10119reference types cannot be converted into an external ACPI_OBJECT.) 10120Provides 10121MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 10122 10123x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 10124subtables for the MADT and one new subtable for the SRAT. Includes 10125disassembler and AcpiSrc support. Data from the Intel 64 Architecture 10126x2APIC 10127Specification, June 2008. 10128 10129Additional error checking for pathname utilities. Add error check after 10130all 10131calls to AcpiNsGetPathnameLength. Add status return from 10132AcpiNsBuildExternalPath and check after all calls. Add parameter 10133validation 10134to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 10135 10136Return status from the global init function AcpiUtGlobalInitialize. This 10137is 10138used by both the kernel subsystem and the utilities such as iASL 10139compiler. 10140The function could possibly fail when the caches are initialized. Yang 10141Yi. 10142 10143Add a function to decode reference object types to strings. Created for 10144improved error messages. 10145 10146Improve object conversion error messages. Better error messages during 10147object 10148conversion from internal to the external ACPI_OBJECT. Used for external 10149calls 10150to AcpiEvaluateObject. 10151 10152Example Code and Data Size: These are the sizes for the OS-independent 10153acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10154debug version of the code includes the debug output trace mechanism and 10155has a 10156much larger code and data size. 10157 10158 Previous Release: 10159 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 10160 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 10161 Current Release: 10162 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 10163 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 10164 101652) iASL Compiler/Disassembler and Tools: 10166 10167Debugger: fix a possible hang when evaluating non-methods. Fixes a 10168problem 10169introduced in version 20080701. If the object being evaluated (via 10170execute 10171command) is not a method, the debugger can hang while trying to obtain 10172non- 10173existent parameters. 10174 10175iASL: relax error for using reserved "_T_x" identifiers. These names can 10176appear in a disassembled ASL file if they were emitted by the original 10177compiler. Instead of issuing an error or warning and forcing the user to 10178manually change these names, issue a remark instead. 10179 10180iASL: error if named object created in while loop. Emit an error if any 10181named 10182object is created within a While loop. If allowed, this code will 10183generate 10184a 10185run-time error on the second iteration of the loop when an attempt is 10186made 10187to 10188create the same named object twice. ACPICA bugzilla 730. 10189 10190iASL: Support absolute pathnames for include files. Add support for 10191absolute 10192pathnames within the Include operator. previously, only relative 10193pathnames 10194were supported. 10195 10196iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 10197Descriptor. 10198The ACPI spec requires one interrupt minimum. BZ 423 10199 10200iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 10201Handles the case for the Interrupt Resource Descriptor where 10202the ResourceSource argument is omitted but ResourceSourceIndex 10203is present. Now leave room for the Index. BZ 426 10204 10205iASL: Prevent error message if CondRefOf target does not exist. Fixes 10206cases 10207where an error message is emitted if the target does not exist. BZ 516 10208 10209iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 10210(get ACPI tables on Windows). This was apparently broken in version 1021120070919. 10212 10213AcpiXtract: Handle EOF while extracting data. Correctly handle the case 10214where 10215the EOF happens immediately after the last table in the input file. Print 10216completion message. Previously, no message was displayed in this case. 10217 10218---------------------------------------- 1021901 July 2008. Summary of changes for version 20080701: 10220 102210) Git source tree / acpica.org 10222 10223Fixed a problem where a git-clone from http would not transfer the entire 10224source tree. 10225 102261) ACPI CA Core Subsystem: 10227 10228Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 10229enable bit. Now performs a read-change-write of the enable register 10230instead 10231of simply writing out the cached enable mask. This will prevent 10232inadvertent 10233enabling of GPEs if a rogue GPE is received during initialization (before 10234GPE 10235handlers are installed.) 10236 10237Implemented a copy for dynamically loaded tables. Previously, dynamically 10238loaded tables were simply mapped - but on some machines this memory is 10239corrupted after suspend. Now copy the table to a local buffer. For the 10240OpRegion case, added checksum verify. Use the table length from the table 10241header, not the region length. For the Buffer case, use the table length 10242also. Dennis Noordsij, Bob Moore. BZ 10734 10243 10244Fixed a problem where the same ACPI table could not be dynamically loaded 10245and 10246unloaded more than once. Without this change, a table cannot be loaded 10247again 10248once it has been loaded/unloaded one time. The current mechanism does not 10249unregister a table upon an unload. During a load, if the same table is 10250found, 10251this no longer returns an exception. BZ 722 10252 10253Fixed a problem where the wrong descriptor length was calculated for the 10254EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 10255EndTag 10256are calculated as 12 bytes long, but the actual length in the internal 10257descriptor is 16 because of the round-up to 8 on the 64-bit build. 10258Reported 10259by Linn Crosetto. BZ 728 10260 10261Fixed a possible memory leak in the Unload operator. The DdbHandle 10262returned 10263by Load() did not have its reference count decremented during unload, 10264leading 10265to a memory leak. Lin Ming. BZ 727 10266 10267Fixed a possible memory leak when deleting thermal/processor objects. Any 10268associated notify handlers (and objects) were not being deleted. Fiodor 10269Suietov. BZ 506 10270 10271Fixed the ordering of the ASCII names in the global mutex table to match 10272the 10273actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 10274only. 10275Vegard Nossum. BZ 726 10276 10277Enhanced the AcpiGetObjectInfo interface to return the number of required 10278arguments if the object is a control method. Added this call to the 10279debugger 10280so the proper number of default arguments are passed to a method. This 10281prevents a warning when executing methods from AcpiExec. 10282 10283Added a check for an invalid handle in AcpiGetObjectInfo. Return 10284AE_BAD_PARAMETER if input handle is invalid. BZ 474 10285 10286Fixed an extraneous warning from exconfig.c on the 64-bit build. 10287 10288Example Code and Data Size: These are the sizes for the OS-independent 10289acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10290debug version of the code includes the debug output trace mechanism and 10291has a 10292much larger code and data size. 10293 10294 Previous Release: 10295 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10296 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10297 Current Release: 10298 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 10299 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 10300 103012) iASL Compiler/Disassembler and Tools: 10302 10303iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 10304resource descriptor names. 10305 10306iASL: Detect invalid ASCII characters in input (windows version). Removed 10307the 10308"-CF" flag from the flex compile, enables correct detection of non-ASCII 10309characters in the input. BZ 441 10310 10311iASL: Eliminate warning when result of LoadTable is not used. Eliminate 10312the 10313"result of operation not used" warning when the DDB handle returned from 10314LoadTable is not used. The warning is not needed. BZ 590 10315 10316AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 10317method 10318to 10319pass address of table to the AML. Added option to disable OpRegion 10320simulation 10321to allow creation of an OpRegion with a real address that was passed to 10322_CFG. 10323All of this allows testing of the Load and Unload operators from 10324AcpiExec. 10325 10326Debugger: update tables command for unloaded tables. Handle unloaded 10327tables 10328and use the standard table header output routine. 10329 10330---------------------------------------- 1033109 June 2008. Summary of changes for version 20080609: 10332 103331) ACPI CA Core Subsystem: 10334 10335Implemented a workaround for reversed _PRT entries. A significant number 10336of 10337BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 10338change dynamically detects and repairs this problem. Provides 10339compatibility 10340with MS ACPI. BZ 6859 10341 10342Simplified the internal ACPI hardware interfaces to eliminate the locking 10343flag parameter from Register Read/Write. Added a new external interface, 10344AcpiGetRegisterUnlocked. 10345 10346Fixed a problem where the invocation of a GPE control method could hang. 10347This 10348was a regression introduced in 20080514. The new method argument count 10349validation mechanism can enter an infinite loop when a GPE method is 10350dispatched. Problem fixed by removing the obsolete code that passed GPE 10351block 10352information to the notify handler via the control method parameter 10353pointer. 10354 10355Fixed a problem where the _SST execution status was incorrectly returned 10356to 10357the caller of AcpiEnterSleepStatePrep. This was a regression introduced 10358in 1035920080514. _SST is optional and a NOT_FOUND exception should never be 10360returned. BZ 716 10361 10362Fixed a problem where a deleted object could be accessed from within the 10363AML 10364parser. This was a regression introduced in version 20080123 as a fix for 10365the 10366Unload operator. Lin Ming. BZ 10669 10367 10368Cleaned up the debug operand dump mechanism. Eliminated unnecessary 10369operands 10370and eliminated the use of a negative index in a loop. Operands are now 10371displayed in the correct order, not backwards. This also fixes a 10372regression 10373introduced in 20080514 on 64-bit systems where the elimination of 10374ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 10375715 10376 10377Fixed a possible memory leak in EvPciConfigRegionSetup where the error 10378exit 10379path did not delete a locally allocated structure. 10380 10381Updated definitions for the DMAR and SRAT tables to synchronize with the 10382current specifications. Includes disassembler support. 10383 10384Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 10385loop termination value was used. Loop terminated on iteration early, 10386missing 10387one mutex. Linn Crosetto 10388 10389Example Code and Data Size: These are the sizes for the OS-independent 10390acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10391debug version of the code includes the debug output trace mechanism and 10392has a 10393much larger code and data size. 10394 10395 Previous Release: 10396 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10397 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10398 Current Release: 10399 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 10400 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 10401 104022) iASL Compiler/Disassembler and Tools: 10403 10404Disassembler: Implemented support for EisaId() within _CID objects. Now 10405disassemble integer _CID objects back to EisaId invocations, including 10406multiple integers within _CID packages. Includes single-step support for 10407debugger also. 10408 10409Disassembler: Added support for DMAR and SRAT table definition changes. 10410 10411---------------------------------------- 1041214 May 2008. Summary of changes for version 20080514: 10413 104141) ACPI CA Core Subsystem: 10415 10416Fixed a problem where GPEs were enabled too early during the ACPICA 10417initialization. This could lead to "handler not installed" errors on some 10418machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 10419This 10420ensures that all operation regions and devices throughout the namespace 10421have 10422been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 10423 10424Implemented a change to the enter sleep code. Moved execution of the _GTS 10425method to just before setting sleep enable bit. The execution was moved 10426from 10427AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 10428immediately before the SLP_EN bit is set, as per the ACPI specification. 10429Luming Yu, BZ 1653. 10430 10431Implemented a fix to disable unknown GPEs (2nd version). Now always 10432disable 10433the GPE, even if ACPICA thinks that that it is already disabled. It is 10434possible that the AML or some other code has enabled the GPE unbeknownst 10435to 10436the ACPICA code. 10437 10438Fixed a problem with the Field operator where zero-length fields would 10439return 10440an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 10441ASL 10442field declarations in Field(), BankField(), and IndexField(). BZ 10606. 10443 10444Implemented a fix for the Load operator, now load the table at the 10445namespace 10446root. This reverts a change introduced in version 20071019. The table is 10447now 10448loaded at the namespace root even though this goes against the ACPI 10449specification. This provides compatibility with other ACPI 10450implementations. 10451The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 10452Ming. 10453 10454Fixed a problem where ACPICA would not Load() tables with unusual 10455signatures. 10456Now ignore ACPI table signature for Load() operator. Only "SSDT" is 10457acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 10458Therefore, signature validation is worthless. Apparently MS ACPI accepts 10459such 10460signatures, ACPICA must be compatible. BZ 10454. 10461 10462Fixed a possible negative array index in AcpiUtValidateException. Added 10463NULL 10464fields to the exception string arrays to eliminate a -1 subtraction on 10465the 10466SubStatus field. 10467 10468Updated the debug tracking macros to reduce overall code and data size. 10469Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 10470instead of pointers to static strings. Jan Beulich and Bob Moore. 10471 10472Implemented argument count checking in control method invocation via 10473AcpiEvaluateObject. Now emit an error if too few arguments, warning if 10474too 10475many. This applies only to extern programmatic control method execution, 10476not 10477method-to-method calls within the AML. Lin Ming. 10478 10479Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 10480no 10481longer needed, especially with the removal of 16-bit support. It was 10482replaced 10483mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 10484bit 10485on 1048632/64-bit platforms is required. 10487 10488Added the C const qualifier for appropriate string constants -- mostly 10489MODULE_NAME and printf format strings. Jan Beulich. 10490 10491Example Code and Data Size: These are the sizes for the OS-independent 10492acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10493debug version of the code includes the debug output trace mechanism and 10494has a 10495much larger code and data size. 10496 10497 Previous Release: 10498 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10499 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10500 Current Release: 10501 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 10502 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 10503 105042) iASL Compiler/Disassembler and Tools: 10505 10506Implemented ACPI table revision ID validation in the disassembler. Zero 10507is 10508always invalid. For DSDTs, the ID controls the interpreter integer width. 105091 10510means 32-bit and this is unusual. 2 or greater is 64-bit. 10511 10512---------------------------------------- 1051321 March 2008. Summary of changes for version 20080321: 10514 105151) ACPI CA Core Subsystem: 10516 10517Implemented an additional change to the GPE support in order to suppress 10518spurious or stray GPEs. The AcpiEvDisableGpe function will now 10519permanently 10520disable incoming GPEs that are neither enabled nor disabled -- meaning 10521that 10522the GPE is unknown to the system. This should prevent future interrupt 10523floods 10524from that GPE. BZ 6217 (Zhang Rui) 10525 10526Fixed a problem where NULL package elements were not returned to the 10527AcpiEvaluateObject interface correctly. The element was simply ignored 10528instead of returning a NULL ACPI_OBJECT package element, potentially 10529causing 10530a buffer overflow and/or confusing the caller who expected a fixed number 10531of 10532elements. BZ 10132 (Lin Ming, Bob Moore) 10533 10534Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 10535Dword, 10536Qword), Field, BankField, and IndexField operators when invoked from 10537inside 10538an executing control method. In this case, these operators created 10539namespace 10540nodes that were incorrectly left marked as permanent nodes instead of 10541temporary nodes. This could cause a problem if there is race condition 10542between an exiting control method and a running namespace walk. (Reported 10543by 10544Linn Crosetto) 10545 10546Fixed a problem where the CreateField and CreateXXXField operators would 10547incorrectly allow duplicate names (the name of the field) with no 10548exception 10549generated. 10550 10551Implemented several changes for Notify handling. Added support for new 10552Notify 10553values (ACPI 2.0+) and improved the Notify debug output. Notify on 10554PowerResource objects is no longer allowed, as per the ACPI 10555specification. 10556(Bob Moore, Zhang Rui) 10557 10558All Reference Objects returned via the AcpiEvaluateObject interface are 10559now 10560marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 10561for 10562NULL objects - either NULL package elements or unresolved named 10563references. 10564 10565Fixed a problem where an extraneous debug message was produced for 10566package 10567objects (when debugging enabled). The message "Package List length larger 10568than NumElements count" is now produced in the correct case, and is now 10569an 10570error message rather than a debug message. Added a debug message for the 10571opposite case, where NumElements is larger than the Package List (the 10572package 10573will be padded out with NULL elements as per the ACPI spec.) 10574 10575Implemented several improvements for the output of the ASL "Debug" object 10576to 10577clarify and keep all data for a given object on one output line. 10578 10579Fixed two size calculation issues with the variable-length Start 10580Dependent 10581resource descriptor. 10582 10583Example Code and Data Size: These are the sizes for the OS-independent 10584acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10585debug version of the code includes the debug output trace mechanism and 10586has 10587a much larger code and data size. 10588 10589 Previous Release: 10590 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10591 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10592 Current Release: 10593 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 10594 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 10595 105962) iASL Compiler/Disassembler and Tools: 10597 10598Fixed a problem with the use of the Switch operator where execution of 10599the 10600containing method by multiple concurrent threads could cause an 10601AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 10602actual Switch opcode, it must be simulated with local named temporary 10603variables and if/else pairs. The solution chosen was to mark any method 10604that 10605uses Switch as Serialized, thus preventing multiple thread entries. BZ 10606469. 10607 10608---------------------------------------- 1060913 February 2008. Summary of changes for version 20080213: 10610 106111) ACPI CA Core Subsystem: 10612 10613Implemented another MS compatibility design change for GPE/Notify 10614handling. 10615GPEs are now cleared/enabled asynchronously to allow all pending notifies 10616to 10617complete first. It is expected that the OSL will queue the enable request 10618behind all pending notify requests (may require changes to the local host 10619OSL 10620in AcpiOsExecute). Alexey Starikovskiy. 10621 10622Fixed a problem where buffer and package objects passed as arguments to a 10623control method via the external AcpiEvaluateObject interface could cause 10624an 10625AE_AML_INTERNAL exception depending on the order and type of operators 10626executed by the target control method. 10627 10628Fixed a problem where resource descriptor size optimization could cause a 10629problem when a _CRS resource template is passed to a _SRS method. The 10630_SRS 10631resource template must use the same descriptors (with the same size) as 10632returned from _CRS. This change affects the following resource 10633descriptors: 10634IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 106359487) 10636 10637Fixed a problem where a CopyObject to RegionField, BankField, and 10638IndexField 10639objects did not perform an implicit conversion as it should. These types 10640must 10641retain their initial type permanently as per the ACPI specification. 10642However, 10643a CopyObject to all other object types should not perform an implicit 10644conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 10645 10646Fixed a problem with the AcpiGetDevices interface where the mechanism to 10647match device CIDs did not examine the entire list of available CIDs, but 10648instead aborted on the first non-matching CID. Andrew Patterson. 10649 10650Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 10651was 10652inadvertently changed to return a 16-bit value instead of a 32-bit value, 10653truncating the upper dword of a 64-bit value. This macro is only used to 10654display debug output, so no incorrect calculations were made. Also, 10655reimplemented the macro so that a 64-bit shift is not performed by 10656inefficient compilers. 10657 10658Added missing va_end statements that should correspond with each va_start 10659statement. 10660 10661Example Code and Data Size: These are the sizes for the OS-independent 10662acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10663debug version of the code includes the debug output trace mechanism and 10664has 10665a much larger code and data size. 10666 10667 Previous Release: 10668 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10669 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10670 Current Release: 10671 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 10672 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 10673 106742) iASL Compiler/Disassembler and Tools: 10675 10676Implemented full disassembler support for the following new ACPI tables: 10677BERT, EINJ, and ERST. Implemented partial disassembler support for the 10678complicated HEST table. These tables support the Windows Hardware Error 10679Architecture (WHEA). 10680 10681---------------------------------------- 1068223 January 2008. Summary of changes for version 20080123: 10683 106841) ACPI CA Core Subsystem: 10685 10686Added the 2008 copyright to all module headers and signons. This affects 10687virtually every file in the ACPICA core subsystem, the iASL compiler, and 10688the tools/utilities. 10689 10690Fixed a problem with the SizeOf operator when used with Package and 10691Buffer 10692objects. These objects have deferred execution for some arguments, and 10693the 10694execution is now completed before the SizeOf is executed. This problem 10695caused 10696unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 10697BZ 106989558 10699 10700Implemented an enhancement to the interpreter "slack mode". In the 10701absence 10702of 10703an explicit return or an implicitly returned object from the last 10704executed 10705opcode, a control method will now implicitly return an integer of value 0 10706for 10707Microsoft compatibility. (Lin Ming) BZ 392 10708 10709Fixed a problem with the Load operator where an exception was not 10710returned 10711in 10712the case where the table is already loaded. (Lin Ming) BZ 463 10713 10714Implemented support for the use of DDBHandles as an Indexed Reference, as 10715per 10716the ACPI spec. (Lin Ming) BZ 486 10717 10718Implemented support for UserTerm (Method invocation) for the Unload 10719operator 10720as per the ACPI spec. (Lin Ming) BZ 580 10721 10722Fixed a problem with the LoadTable operator where the OemId and 10723OemTableId 10724input strings could cause unexpected failures if they were shorter than 10725the 10726maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 10727 10728Implemented support for UserTerm (Method invocation) for the Unload 10729operator 10730as per the ACPI spec. (Lin Ming) BZ 580 10731 10732Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 10733HEST, 10734IBFT, UEFI, WDAT. Disassembler support is forthcoming. 10735 10736Example Code and Data Size: These are the sizes for the OS-independent 10737acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10738debug version of the code includes the debug output trace mechanism and 10739has 10740a much larger code and data size. 10741 10742 Previous Release: 10743 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 10744 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 10745 Current Release: 10746 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 10747 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 10748 107492) iASL Compiler/Disassembler and Tools: 10750 10751Implemented support in the disassembler for checksum validation on 10752incoming 10753binary DSDTs and SSDTs. If incorrect, a message is displayed within the 10754table 10755header dump at the start of the disassembly. 10756 10757Implemented additional debugging information in the namespace listing 10758file 10759created during compilation. In addition to the namespace hierarchy, the 10760full 10761pathname to each namespace object is displayed. 10762 10763Fixed a problem with the disassembler where invalid ACPI tables could 10764cause 10765faults or infinite loops. 10766 10767Fixed an unexpected parse error when using the optional "parameter types" 10768list in a control method declaration. (Lin Ming) BZ 397 10769 10770Fixed a problem where two External declarations with the same name did 10771not 10772cause an error (Lin Ming) BZ 509 10773 10774Implemented support for full TermArgs (adding Argx, Localx and method 10775invocation) for the ParameterData parameter to the LoadTable operator. 10776(Lin 10777Ming) BZ 583,587 10778 10779---------------------------------------- 1078019 December 2007. Summary of changes for version 20071219: 10781 107821) ACPI CA Core Subsystem: 10783 10784Implemented full support for deferred execution for the TermArg string 10785arguments for DataTableRegion. This enables forward references and full 10786operand resolution for the three string arguments. Similar to 10787OperationRegion 10788deferred argument execution.) Lin Ming. BZ 430 10789 10790Implemented full argument resolution support for the BankValue argument 10791to 10792BankField. Previously, only constants were supported, now any TermArg may 10793be 10794used. Lin Ming BZ 387, 393 10795 10796Fixed a problem with AcpiGetDevices where the search of a branch of the 10797device tree could be terminated prematurely. In accordance with the ACPI 10798specification, the search down the current branch is terminated if a 10799device 10800is both not present and not functional (instead of just not present.) 10801Yakui 10802Zhao. 10803 10804Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 10805if 10806the underlying AML code changed the GPE enable registers. Now, any 10807unknown 10808incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 10809disabled 10810instead of simply ignored. Rui Zhang. 10811 10812Fixed a problem with Index Fields where the Index register was 10813incorrectly 10814limited to a maximum of 32 bits. Now any size may be used. 10815 10816Fixed a couple memory leaks associated with "implicit return" objects 10817when 10818the AML Interpreter slack mode is enabled. Lin Ming BZ 349 10819 10820Example Code and Data Size: These are the sizes for the OS-independent 10821acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10822debug version of the code includes the debug output trace mechanism and 10823has 10824a much larger code and data size. 10825 10826 Previous Release: 10827 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 10828 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 10829 Current Release: 10830 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 10831 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 10832 10833---------------------------------------- 1083414 November 2007. Summary of changes for version 20071114: 10835 108361) ACPI CA Core Subsystem: 10837 10838Implemented event counters for each of the Fixed Events, the ACPI SCI 10839(interrupt) itself, and control methods executed. Named 10840AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 10841These 10842should be useful for debugging and statistics. 10843 10844Implemented a new external interface, AcpiGetStatistics, to retrieve the 10845contents of the various event counters. Returns the current values for 10846AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 10847AcpiMethodCount. The interface can be expanded in the future if new 10848counters 10849are added. Device drivers should use this interface rather than access 10850the 10851counters directly. 10852 10853Fixed a problem with the FromBCD and ToBCD operators. With some 10854compilers, 10855the ShortDivide function worked incorrectly, causing problems with the 10856BCD 10857functions with large input values. A truncation from 64-bit to 32-bit 10858inadvertently occurred. Internal BZ 435. Lin Ming 10859 10860Fixed a problem with Index references passed as method arguments. 10861References 10862passed as arguments to control methods were dereferenced immediately 10863(before 10864control was passed to the called method). The references are now 10865correctly 10866passed directly to the called method. BZ 5389. Lin Ming 10867 10868Fixed a problem with CopyObject used in conjunction with the Index 10869operator. 10870The reference was incorrectly dereferenced before the copy. The reference 10871is 10872now correctly copied. BZ 5391. Lin Ming 10873 10874Fixed a problem with Control Method references within Package objects. 10875These 10876references are now correctly generated. This completes the package 10877construction overhaul that began in version 20071019. 10878 10879Example Code and Data Size: These are the sizes for the OS-independent 10880acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10881debug version of the code includes the debug output trace mechanism and 10882has 10883a much larger code and data size. 10884 10885 Previous Release: 10886 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 10887 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 10888 Current Release: 10889 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 10890 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 10891 10892 108932) iASL Compiler/Disassembler and Tools: 10894 10895The AcpiExec utility now installs handlers for all of the predefined 10896Operation Region types. New types supported are: PCI_Config, CMOS, and 10897PCIBARTarget. 10898 10899Fixed a problem with the 64-bit version of AcpiExec where the extended 10900(64- 10901bit) address fields for the DSDT and FACS within the FADT were not being 10902used, causing truncation of the upper 32-bits of these addresses. Lin 10903Ming 10904and Bob Moore 10905 10906---------------------------------------- 1090719 October 2007. Summary of changes for version 20071019: 10908 109091) ACPI CA Core Subsystem: 10910 10911Fixed a problem with the Alias operator when the target of the alias is a 10912named ASL operator that opens a new scope -- Scope, Device, 10913PowerResource, 10914Processor, and ThermalZone. In these cases, any children of the original 10915operator could not be accessed via the alias, potentially causing 10916unexpected 10917AE_NOT_FOUND exceptions. (BZ 9067) 10918 10919Fixed a problem with the Package operator where all named references were 10920created as object references and left otherwise unresolved. According to 10921the 10922ACPI specification, a Package can only contain Data Objects or references 10923to 10924control methods. The implication is that named references to Data Objects 10925(Integer, Buffer, String, Package, BufferField, Field) should be resolved 10926immediately upon package creation. This is the approach taken with this 10927change. References to all other named objects (Methods, Devices, Scopes, 10928etc.) are all now properly created as reference objects. (BZ 5328) 10929 10930Reverted a change to Notify handling that was introduced in version 1093120070508. This version changed the Notify handling from asynchronous to 10932fully synchronous (Device driver Notify handling with respect to the 10933Notify 10934ASL operator). It was found that this change caused more problems than it 10935solved and was removed by most users. 10936 10937Fixed a problem with the Increment and Decrement operators where the type 10938of 10939the target object could be unexpectedly and incorrectly changed. (BZ 353) 10940Lin Ming. 10941 10942Fixed a problem with the Load and LoadTable operators where the table 10943location within the namespace was ignored. Instead, the table was always 10944loaded into the root or current scope. Lin Ming. 10945 10946Fixed a problem with the Load operator when loading a table from a buffer 10947object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 10948 10949Fixed a problem with the Debug object where a store of a DdbHandle 10950reference 10951object to the Debug object could cause a fault. 10952 10953Added a table checksum verification for the Load operator, in the case 10954where 10955the load is from a buffer. (BZ 578). 10956 10957Implemented additional parameter validation for the LoadTable operator. 10958The 10959length of the input strings SignatureString, OemIdString, and OemTableId 10960are 10961now checked for maximum lengths. (BZ 582) Lin Ming. 10962 10963Example Code and Data Size: These are the sizes for the OS-independent 10964acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 10965debug version of the code includes the debug output trace mechanism and 10966has 10967a much larger code and data size. 10968 10969 Previous Release: 10970 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 10971 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 10972 Current Release: 10973 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 10974 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 10975 10976 109772) iASL Compiler/Disassembler: 10978 10979Fixed a problem where if a single file was specified and the file did not 10980exist, no error message was emitted. (Introduced with wildcard support in 10981version 20070917.) 10982 10983---------------------------------------- 1098419 September 2007. Summary of changes for version 20070919: 10985 109861) ACPI CA Core Subsystem: 10987 10988Designed and implemented new external interfaces to install and remove 10989handlers for ACPI table-related events. Current events that are defined 10990are 10991LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 10992they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 10993AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 10994 10995Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 10996(acpi_serialized option on Linux) could cause some systems to hang during 10997initialization. (Bob Moore) BZ 8171 10998 10999Fixed a problem where objects of certain types (Device, ThermalZone, 11000Processor, PowerResource) can be not found if they are declared and 11001referenced from within the same control method (Lin Ming) BZ 341 11002 11003Example Code and Data Size: These are the sizes for the OS-independent 11004acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11005debug version of the code includes the debug output trace mechanism and 11006has 11007a much larger code and data size. 11008 11009 Previous Release: 11010 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 11011 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 11012 Current Release: 11013 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 11014 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 11015 11016 110172) iASL Compiler/Disassembler: 11018 11019Implemented support to allow multiple files to be compiled/disassembled 11020in 11021a 11022single invocation. This includes command line wildcard support for both 11023the 11024Windows and Unix versions of the compiler. This feature simplifies the 11025disassembly and compilation of multiple ACPI tables in a single 11026directory. 11027 11028---------------------------------------- 1102908 May 2007. Summary of changes for version 20070508: 11030 110311) ACPI CA Core Subsystem: 11032 11033Implemented a Microsoft compatibility design change for the handling of 11034the 11035Notify AML operator. Previously, notify handlers were dispatched and 11036executed completely asynchronously in a deferred thread. The new design 11037still executes the notify handlers in a different thread, but the 11038original 11039thread that executed the Notify() now waits at a synchronization point 11040for 11041the notify handler to complete. Some machines depend on a synchronous 11042Notify 11043operator in order to operate correctly. 11044 11045Implemented support to allow Package objects to be passed as method 11046arguments to the external AcpiEvaluateObject interface. Previously, this 11047would return the AE_NOT_IMPLEMENTED exception. This feature had not been 11048implemented since there were no reserved control methods that required it 11049until recently. 11050 11051Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 11052that 11053contained invalid non-zero values in reserved fields could cause later 11054failures because these fields have meaning in later revisions of the 11055FADT. 11056For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 11057fields 11058are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 11059 11060Fixed a problem where the Global Lock handle was not properly updated if 11061a 11062thread that acquired the Global Lock via executing AML code then 11063attempted 11064to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 11065Joe 11066Liu. 11067 11068Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 11069could be corrupted if the interrupt being removed was at the head of the 11070list. Reported by Linn Crosetto. 11071 11072Example Code and Data Size: These are the sizes for the OS-independent 11073acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11074debug version of the code includes the debug output trace mechanism and 11075has 11076a much larger code and data size. 11077 11078 Previous Release: 11079 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11080 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 11081 Current Release: 11082 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 11083 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 11084 11085---------------------------------------- 1108620 March 2007. Summary of changes for version 20070320: 11087 110881) ACPI CA Core Subsystem: 11089 11090Implemented a change to the order of interpretation and evaluation of AML 11091operand objects within the AML interpreter. The interpreter now evaluates 11092operands in the order that they appear in the AML stream (and the 11093corresponding ASL code), instead of in the reverse order (after the 11094entire 11095operand list has been parsed). The previous behavior caused several 11096subtle 11097incompatibilities with the Microsoft AML interpreter as well as being 11098somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 11099 11100Implemented a change to the ACPI Global Lock support. All interfaces to 11101the 11102global lock now allow the same thread to acquire the lock multiple times. 11103This affects the AcpiAcquireGlobalLock external interface to the global 11104lock 11105as well as the internal use of the global lock to support AML fields -- a 11106control method that is holding the global lock can now simultaneously 11107access 11108AML fields that require global lock protection. Previously, in both 11109cases, 11110this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 11111to 11112AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 11113Controller. There is no change to the behavior of the AML Acquire 11114operator, 11115as this can already be used to acquire a mutex multiple times by the same 11116thread. BZ 8066. With assistance from Alexey Starikovskiy. 11117 11118Fixed a problem where invalid objects could be referenced in the AML 11119Interpreter after error conditions. During operand evaluation, ensure 11120that 11121the internal "Return Object" field is cleared on error and only valid 11122pointers are stored there. Caused occasional access to deleted objects 11123that 11124resulted in "large reference count" warning messages. Valery Podrezov. 11125 11126Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 11127on 11128deeply nested control method invocations. BZ 7873, local BZ 487. Valery 11129Podrezov. 11130 11131Fixed an internal problem with the handling of result objects on the 11132interpreter result stack. BZ 7872. Valery Podrezov. 11133 11134Removed obsolete code that handled the case where AML_NAME_OP is the 11135target 11136of a reference (Reference.Opcode). This code was no longer necessary. BZ 111377874. Valery Podrezov. 11138 11139Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 11140was 11141a 11142remnant from the previously discontinued 16-bit support. 11143 11144Example Code and Data Size: These are the sizes for the OS-independent 11145acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11146debug version of the code includes the debug output trace mechanism and 11147has 11148a much larger code and data size. 11149 11150 Previous Release: 11151 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11152 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11153 Current Release: 11154 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11155 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 11156 11157---------------------------------------- 1115826 January 2007. Summary of changes for version 20070126: 11159 111601) ACPI CA Core Subsystem: 11161 11162Added the 2007 copyright to all module headers and signons. This affects 11163virtually every file in the ACPICA core subsystem, the iASL compiler, and 11164the utilities. 11165 11166Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 11167during a table load. A bad pointer was passed in the case where the DSDT 11168is 11169overridden, causing a fault in this case. 11170 11171Example Code and Data Size: These are the sizes for the OS-independent 11172acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11173debug version of the code includes the debug output trace mechanism and 11174has 11175a much larger code and data size. 11176 11177 Previous Release: 11178 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11179 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11180 Current Release: 11181 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11182 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11183 11184---------------------------------------- 1118515 December 2006. Summary of changes for version 20061215: 11186 111871) ACPI CA Core Subsystem: 11188 11189Support for 16-bit ACPICA has been completely removed since it is no 11190longer 11191necessary and it clutters the code. All 16-bit macros, types, and 11192conditional compiles have been removed, cleaning up and simplifying the 11193code 11194across the entire subsystem. DOS support is no longer needed since the 11195bootable Linux firmware kit is now available. 11196 11197The handler for the Global Lock is now removed during AcpiTerminate to 11198enable a clean subsystem restart, via the implementation of the 11199AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 11200HP) 11201 11202Implemented enhancements to the multithreading support within the 11203debugger 11204to enable improved multithreading debugging and evaluation of the 11205subsystem. 11206(Valery Podrezov) 11207 11208Debugger: Enhanced the Statistics/Memory command to emit the total 11209(maximum) 11210memory used during the execution, as well as the maximum memory consumed 11211by 11212each of the various object types. (Valery Podrezov) 11213 11214Example Code and Data Size: These are the sizes for the OS-independent 11215acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11216debug version of the code includes the debug output trace mechanism and 11217has 11218a much larger code and data size. 11219 11220 Previous Release: 11221 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 11222 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 11223 Current Release: 11224 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 11225 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 11226 11227 112282) iASL Compiler/Disassembler and Tools: 11229 11230AcpiExec: Implemented a new option (-m) to display full memory use 11231statistics upon subsystem/program termination. (Valery Podrezov) 11232 11233---------------------------------------- 1123409 November 2006. Summary of changes for version 20061109: 11235 112361) ACPI CA Core Subsystem: 11237 11238Optimized the Load ASL operator in the case where the source operand is 11239an 11240operation region. Simply map the operation region memory, instead of 11241performing a bytewise read. (Region must be of type SystemMemory, see 11242below.) 11243 11244Fixed the Load ASL operator for the case where the source operand is a 11245region field. A buffer object is also allowed as the source operand. BZ 11246480 11247 11248Fixed a problem where the Load ASL operator allowed the source operand to 11249be 11250an operation region of any type. It is now restricted to regions of type 11251SystemMemory, as per the ACPI specification. BZ 481 11252 11253Additional cleanup and optimizations for the new Table Manager code. 11254 11255AcpiEnable will now fail if all of the required ACPI tables are not 11256loaded 11257(FADT, FACS, DSDT). BZ 477 11258 11259Added #pragma pack(8/4) to acobject.h to ensure that the structures in 11260this 11261header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 11262manually optimized to be aligned and will not work if it is byte-packed. 11263 11264Example Code and Data Size: These are the sizes for the OS-independent 11265acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11266debug version of the code includes the debug output trace mechanism and 11267has 11268a much larger code and data size. 11269 11270 Previous Release: 11271 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11272 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11273 Current Release: 11274 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 11275 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 11276 11277 112782) iASL Compiler/Disassembler and Tools: 11279 11280Fixed a problem where the presence of the _OSI predefined control method 11281within complex expressions could cause an internal compiler error. 11282 11283AcpiExec: Implemented full region support for multiple address spaces. 11284SpaceId is now part of the REGION object. BZ 429 11285 11286---------------------------------------- 1128711 October 2006. Summary of changes for version 20061011: 11288 112891) ACPI CA Core Subsystem: 11290 11291Completed an AML interpreter performance enhancement for control method 11292execution. Previously a 2-pass parse/execution, control methods are now 11293completely parsed and executed in a single pass. This improves overall 11294interpreter performance by ~25%, reduces code size, and reduces CPU stack 11295use. (Valery Podrezov + interpreter changes in version 20051202 that 11296eliminated namespace loading during the pass one parse.) 11297 11298Implemented _CID support for PCI Root Bridge detection. If the _HID does 11299not 11300match the predefined PCI Root Bridge IDs, the _CID list (if present) is 11301now 11302obtained and also checked for an ID match. 11303 11304Implemented additional support for the PCI _ADR execution: upsearch until 11305a 11306device scope is found before executing _ADR. This allows PCI_Config 11307operation regions to be declared locally within control methods 11308underneath 11309PCI device objects. 11310 11311Fixed a problem with a possible race condition between threads executing 11312AcpiWalkNamespace and the AML interpreter. This condition was removed by 11313modifying AcpiWalkNamespace to (by default) ignore all temporary 11314namespace 11315entries created during any concurrent control method execution. An 11316additional namespace race condition is known to exist between 11317AcpiWalkNamespace and the Load/Unload ASL operators and is still under 11318investigation. 11319 11320Restructured the AML ParseLoop function, breaking it into several 11321subfunctions in order to reduce CPU stack use and improve 11322maintainability. 11323(Mikhail Kouzmich) 11324 11325AcpiGetHandle: Fix for parameter validation to detect invalid 11326combinations 11327of prefix handle and pathname. BZ 478 11328 11329Example Code and Data Size: These are the sizes for the OS-independent 11330acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11331debug version of the code includes the debug output trace mechanism and 11332has 11333a much larger code and data size. 11334 11335 Previous Release: 11336 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11337 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11338 Current Release: 11339 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 11340 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 11341 113422) iASL Compiler/Disassembler and Tools: 11343 11344Ported the -g option (get local ACPI tables) to the new ACPICA Table 11345Manager 11346to restore original behavior. 11347 11348---------------------------------------- 1134927 September 2006. Summary of changes for version 20060927: 11350 113511) ACPI CA Core Subsystem: 11352 11353Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 11354These functions now use a spinlock for mutual exclusion and the interrupt 11355level indication flag is not needed. 11356 11357Fixed a problem with the Global Lock where the lock could appear to be 11358obtained before it is actually obtained. The global lock semaphore was 11359inadvertently created with one unit instead of zero units. (BZ 464) 11360Fiodor 11361Suietov. 11362 11363Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 11364during 11365a read from a buffer or region field. (BZ 458) Fiodor Suietov. 11366 11367Example Code and Data Size: These are the sizes for the OS-independent 11368acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11369debug version of the code includes the debug output trace mechanism and 11370has 11371a much larger code and data size. 11372 11373 Previous Release: 11374 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11375 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11376 Current Release: 11377 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11378 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 11379 11380 113812) iASL Compiler/Disassembler and Tools: 11382 11383Fixed a compilation problem with the pre-defined Resource Descriptor 11384field 11385names where an "object does not exist" error could be incorrectly 11386generated 11387if the parent ResourceTemplate pathname places the template within a 11388different namespace scope than the current scope. (BZ 7212) 11389 11390Fixed a problem where the compiler could hang after syntax errors 11391detected 11392in an ElseIf construct. (BZ 453) 11393 11394Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 11395operator. An incorrect output filename was produced when this parameter 11396was 11397a null string (""). Now, the original input filename is used as the AML 11398output filename, with an ".aml" extension. 11399 11400Implemented a generic batch command mode for the AcpiExec utility 11401(execute 11402any AML debugger command) (Valery Podrezov). 11403 11404---------------------------------------- 1140512 September 2006. Summary of changes for version 20060912: 11406 114071) ACPI CA Core Subsystem: 11408 11409Enhanced the implementation of the "serialized mode" of the interpreter 11410(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 11411specified, instead of creating a serialization semaphore per control 11412method, 11413the interpreter lock is simply no longer released before a blocking 11414operation during control method execution. This effectively makes the AML 11415Interpreter single-threaded. The overhead of a semaphore per-method is 11416eliminated. 11417 11418Fixed a regression where an error was no longer emitted if a control 11419method 11420attempts to create 2 objects of the same name. This once again returns 11421AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 11422that 11423will dynamically serialize the control method to possible prevent future 11424errors. (BZ 440) 11425 11426Integrated a fix for a problem with PCI Express HID detection in the PCI 11427Config Space setup procedure. (BZ 7145) 11428 11429Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 11430AcpiHwInitialize function - the FADT registers are now validated when the 11431table is loaded. 11432 11433Added two new warnings during FADT verification - 1) if the FADT is 11434larger 11435than the largest known FADT version, and 2) if there is a mismatch 11436between 11437a 1143832-bit block address and the 64-bit X counterpart (when both are non- 11439zero.) 11440 11441Example Code and Data Size: These are the sizes for the OS-independent 11442acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11443debug version of the code includes the debug output trace mechanism and 11444has 11445a much larger code and data size. 11446 11447 Previous Release: 11448 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11449 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11450 Current Release: 11451 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 11452 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 11453 11454 114552) iASL Compiler/Disassembler and Tools: 11456 11457Fixed a problem with the implementation of the Switch() operator where 11458the 11459temporary variable was declared too close to the actual Switch, instead 11460of 11461at method level. This could cause a problem if the Switch() operator is 11462within a while loop, causing an error on the second iteration. (BZ 460) 11463 11464Disassembler - fix for error emitted for unknown type for target of scope 11465operator. Now, ignore it and continue. 11466 11467Disassembly of an FADT now verifies the input FADT and reports any errors 11468found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 11469 11470Disassembly of raw data buffers with byte initialization data now 11471prefixes 11472each output line with the current buffer offset. 11473 11474Disassembly of ASF! table now includes all variable-length data fields at 11475the end of some of the subtables. 11476 11477The disassembler now emits a comment if a buffer appears to be a 11478ResourceTemplate, but cannot be disassembled as such because the EndTag 11479does 11480not appear at the very end of the buffer. 11481 11482AcpiExec - Added the "-t" command line option to enable the serialized 11483mode 11484of the AML interpreter. 11485 11486---------------------------------------- 1148731 August 2006. Summary of changes for version 20060831: 11488 114891) ACPI CA Core Subsystem: 11490 11491Miscellaneous fixes for the Table Manager: 11492- Correctly initialize internal common FADT for all 64-bit "X" fields 11493- Fixed a couple table mapping issues during table load 11494- Fixed a couple alignment issues for IA64 11495- Initialize input array to zero in AcpiInitializeTables 11496- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 11497AcpiGetTableByIndex 11498 11499Change for GPE support: when a "wake" GPE is received, all wake GPEs are 11500now 11501immediately disabled to prevent the waking GPE from firing again and to 11502prevent other wake GPEs from interrupting the wake process. 11503 11504Added the AcpiGpeCount global that tracks the number of processed GPEs, 11505to 11506be used for debugging systems with a large number of ACPI interrupts. 11507 11508Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 11509both the ACPICA headers and the disassembler. 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: 77.8K Code, 16.5K Data, 94.3K Total 11519 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11520 Current Release: 11521 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 11522 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 11523 11524 115252) iASL Compiler/Disassembler and Tools: 11526 11527Disassembler support for the DMAR ACPI table. 11528 11529---------------------------------------- 1153023 August 2006. Summary of changes for version 20060823: 11531 115321) ACPI CA Core Subsystem: 11533 11534The Table Manager component has been completely redesigned and 11535reimplemented. The new design is much simpler, and reduces the overall 11536code 11537and data size of the kernel-resident ACPICA by approximately 5%. Also, it 11538is 11539now possible to obtain the ACPI tables very early during kernel 11540initialization, even before dynamic memory management is initialized. 11541(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 11542 11543Obsolete ACPICA interfaces: 11544 11545- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 11546init 11547time). 11548- AcpiLoadTable: Not needed. 11549- AcpiUnloadTable: Not needed. 11550 11551New ACPICA interfaces: 11552 11553- AcpiInitializeTables: Must be called before the table manager can be 11554used. 11555- AcpiReallocateRootTable: Used to transfer the root table to dynamically 11556allocated memory after it becomes available. 11557- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 11558tables 11559in the RSDT/XSDT. 11560 11561Other ACPICA changes: 11562 11563- AcpiGetTableHeader returns the actual mapped table header, not a copy. 11564Use 11565AcpiOsUnmapMemory to free this mapping. 11566- AcpiGetTable returns the actual mapped table. The mapping is managed 11567internally and must not be deleted by the caller. Use of this interface 11568causes no additional dynamic memory allocation. 11569- AcpiFindRootPointer: Support for physical addressing has been 11570eliminated, 11571it appeared to be unused. 11572- The interface to AcpiOsMapMemory has changed to be consistent with the 11573other allocation interfaces. 11574- The interface to AcpiOsGetRootPointer has changed to eliminate 11575unnecessary 11576parameters. 11577- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 1157864- 11579bit platforms. Was previously 64 bits on all platforms. 11580- The interface to the ACPI Global Lock acquire/release macros have 11581changed 11582slightly since ACPICA no longer keeps a local copy of the FACS with a 11583constructed pointer to the actual global lock. 11584 11585Porting to the new table manager: 11586 11587- AcpiInitializeTables: Must be called once, and can be called anytime 11588during the OS initialization process. It allows the host to specify an 11589area 11590of memory to be used to store the internal version of the RSDT/XSDT (root 11591table). This allows the host to access ACPI tables before memory 11592management 11593is initialized and running. 11594- AcpiReallocateRootTable: Can be called after memory management is 11595running 11596to copy the root table to a dynamically allocated array, freeing up the 11597scratch memory specified in the call to AcpiInitializeTables. 11598- AcpiSubsystemInitialize: This existing interface is independent of the 11599Table Manager, and does not have to be called before the Table Manager 11600can 11601be used, it only must be called before the rest of ACPICA can be used. 11602- ACPI Tables: Some changes have been made to the names and structure of 11603the 11604actbl.h and actbl1.h header files and may require changes to existing 11605code. 11606For example, bitfields have been completely removed because of their lack 11607of 11608portability across C compilers. 11609- Update interfaces to the Global Lock acquire/release macros if local 11610versions are used. (see acwin.h) 11611 11612Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 11613 11614New files: tbfind.c 11615 11616Example Code and Data Size: These are the sizes for the OS-independent 11617acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11618debug version of the code includes the debug output trace mechanism and 11619has 11620a much larger code and data size. 11621 11622 Previous Release: 11623 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11624 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11625 Current Release: 11626 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 11627 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 11628 11629 116302) iASL Compiler/Disassembler and Tools: 11631 11632No changes for this release. 11633 11634---------------------------------------- 1163521 July 2006. Summary of changes for version 20060721: 11636 116371) ACPI CA Core Subsystem: 11638 11639The full source code for the ASL test suite used to validate the iASL 11640compiler and the ACPICA core subsystem is being released with the ACPICA 11641source for the first time. The source is contained in a separate package 11642and 11643consists of over 1100 files that exercise all ASL/AML operators. The 11644package 11645should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 11646Fiodor 11647Suietov) 11648 11649Completed a new design and implementation for support of the ACPI Global 11650Lock. On the OS side, the global lock is now treated as a standard AML 11651mutex. Previously, multiple OS threads could "acquire" the global lock 11652simultaneously. However, this could cause the BIOS to be starved out of 11653the 11654lock - especially in cases such as the Embedded Controller driver where 11655there is a tight coupling between the OS and the BIOS. 11656 11657Implemented an optimization for the ACPI Global Lock interrupt mechanism. 11658The Global Lock interrupt handler no longer queues the execution of a 11659separate thread to signal the global lock semaphore. Instead, the 11660semaphore 11661is signaled directly from the interrupt handler. 11662 11663Implemented support within the AML interpreter for package objects that 11664contain a larger AML length (package list length) than the package 11665element 11666count. In this case, the length of the package is truncated to match the 11667package element count. Some BIOS code apparently modifies the package 11668length 11669on the fly, and this change supports this behavior. Provides 11670compatibility 11671with the MS AML interpreter. (With assistance from Fiodor Suietov) 11672 11673Implemented a temporary fix for the BankValue parameter of a Bank Field 11674to 11675support all constant values, now including the Zero and One opcodes. 11676Evaluation of this parameter must eventually be converted to a full 11677TermArg 11678evaluation. A not-implemented error is now returned (temporarily) for 11679non- 11680constant values for this parameter. 11681 11682Fixed problem reports (Fiodor Suietov) integrated: 11683- Fix for premature object deletion after CopyObject on Operation Region 11684(BZ 11685350) 11686 11687Example Code and Data Size: These are the sizes for the OS-independent 11688acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11689debug version of the code includes the debug output trace mechanism and 11690has 11691a much larger code and data size. 11692 11693 Previous Release: 11694 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 11695 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 11696 Current Release: 11697 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11698 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11699 11700 117012) iASL Compiler/Disassembler and Tools: 11702 11703No changes for this release. 11704 11705---------------------------------------- 1170607 July 2006. Summary of changes for version 20060707: 11707 117081) ACPI CA Core Subsystem: 11709 11710Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 11711that do not allow the initialization of address pointers within packed 11712structures - even though the hardware itself may support misaligned 11713transfers. Some of the debug data structures are packed by default to 11714minimize size. 11715 11716Added an error message for the case where AcpiOsGetThreadId() returns 11717zero. 11718A non-zero value is required by the core ACPICA code to ensure the proper 11719operation of AML mutexes and recursive control methods. 11720 11721The DSDT is now the only ACPI table that determines whether the AML 11722interpreter is in 32-bit or 64-bit mode. Not really a functional change, 11723but 11724the hooks for per-table 32/64 switching have been removed from the code. 11725A 11726clarification to the ACPI specification is forthcoming in ACPI 3.0B. 11727 11728Fixed a possible leak of an OwnerID in the error path of 11729AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 11730deletion to a single place in AcpiTbUninstallTable to correct possible 11731leaks 11732when using the AcpiTbDeleteTablesByType interface (with assistance from 11733Lance Ortiz.) 11734 11735Fixed a problem with Serialized control methods where the semaphore 11736associated with the method could be over-signaled after multiple method 11737invocations. 11738 11739Fixed two issues with the locking of the internal namespace data 11740structure. 11741Both the Unload() operator and AcpiUnloadTable interface now lock the 11742namespace during the namespace deletion associated with the table unload 11743(with assistance from Linn Crosetto.) 11744 11745Fixed problem reports (Valery Podrezov) integrated: 11746- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 11747 11748Fixed problem reports (Fiodor Suietov) integrated: 11749- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 11750- On Address Space handler deletion, needless deactivation call (BZ 374) 11751- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 11752375) 11753- Possible memory leak, Notify sub-objects of Processor, Power, 11754ThermalZone 11755(BZ 376) 11756- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 11757- Minimum Length of RSDT should be validated (BZ 379) 11758- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 11759Handler (BZ (380) 11760- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 11761loaded 11762(BZ 381) 11763 11764Example Code and Data Size: These are the sizes for the OS-independent 11765acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11766debug version of the code includes the debug output trace mechanism and 11767has 11768a much larger code and data size. 11769 11770 Previous Release: 11771 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 11772 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 11773 Current Release: 11774 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 11775 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 11776 11777 117782) iASL Compiler/Disassembler and Tools: 11779 11780Fixed problem reports: 11781Compiler segfault when ASL contains a long (>1024) String declaration (BZ 11782436) 11783 11784---------------------------------------- 1178523 June 2006. Summary of changes for version 20060623: 11786 117871) ACPI CA Core Subsystem: 11788 11789Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 11790allows the type to be customized to the host OS for improved efficiency 11791(since a spinlock is usually a very small object.) 11792 11793Implemented support for "ignored" bits in the ACPI registers. According 11794to 11795the ACPI specification, these bits should be preserved when writing the 11796registers via a read/modify/write cycle. There are 3 bits preserved in 11797this 11798manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 11799 11800Implemented the initial deployment of new OSL mutex interfaces. Since 11801some 11802host operating systems have separate mutex and semaphore objects, this 11803feature was requested. The base code now uses mutexes (and the new mutex 11804interfaces) wherever a binary semaphore was used previously. However, for 11805the current release, the mutex interfaces are defined as macros to map 11806them 11807to the existing semaphore interfaces. Therefore, no OSL changes are 11808required 11809at this time. (See acpiosxf.h) 11810 11811Fixed several problems with the support for the control method SyncLevel 11812parameter. The SyncLevel now works according to the ACPI specification 11813and 11814in concert with the Mutex SyncLevel parameter, since the current 11815SyncLevel 11816is a property of the executing thread. Mutual exclusion for control 11817methods 11818is now implemented with a mutex instead of a semaphore. 11819 11820Fixed three instances of the use of the C shift operator in the bitfield 11821support code (exfldio.c) to avoid the use of a shift value larger than 11822the 11823target data width. The behavior of C compilers is undefined in this case 11824and 11825can cause unpredictable results, and therefore the case must be detected 11826and 11827avoided. (Fiodor Suietov) 11828 11829Added an info message whenever an SSDT or OEM table is loaded dynamically 11830via the Load() or LoadTable() ASL operators. This should improve 11831debugging 11832capability since it will show exactly what tables have been loaded 11833(beyond 11834the tables present in the RSDT/XSDT.) 11835 11836Example Code and Data Size: These are the sizes for the OS-independent 11837acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11838debug version of the code includes the debug output trace mechanism and 11839has 11840a much larger code and data size. 11841 11842 Previous Release: 11843 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 11844 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 11845 Current Release: 11846 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 11847 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 11848 11849 118502) iASL Compiler/Disassembler and Tools: 11851 11852No changes for this release. 11853 11854---------------------------------------- 1185508 June 2006. Summary of changes for version 20060608: 11856 118571) ACPI CA Core Subsystem: 11858 11859Converted the locking mutex used for the ACPI hardware to a spinlock. 11860This 11861change should eliminate all problems caused by attempting to acquire a 11862semaphore at interrupt level, and it means that all ACPICA external 11863interfaces that directly access the ACPI hardware can be safely called 11864from 11865interrupt level. OSL code that implements the semaphore interfaces should 11866be 11867able to eliminate any workarounds for being called at interrupt level. 11868 11869Fixed a regression introduced in 20060526 where the ACPI device 11870initialization could be prematurely aborted with an AE_NOT_FOUND if a 11871device 11872did not have an optional _INI method. 11873 11874Fixed an IndexField issue where a write to the Data Register should be 11875limited in size to the AccessSize (width) of the IndexField itself. (BZ 11876433, 11877Fiodor Suietov) 11878 11879Fixed problem reports (Valery Podrezov) integrated: 11880- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 11881 11882Fixed problem reports (Fiodor Suietov) integrated: 11883- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 11884 11885Removed four global mutexes that were obsolete and were no longer being 11886used. 11887 11888Example Code and Data Size: These are the sizes for the OS-independent 11889acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11890debug version of the code includes the debug output trace mechanism and 11891has 11892a much larger code and data size. 11893 11894 Previous Release: 11895 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 11896 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 11897 Current Release: 11898 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 11899 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 11900 11901 119022) iASL Compiler/Disassembler and Tools: 11903 11904Fixed a fault when using -g option (get tables from registry) on Windows 11905machines. 11906 11907Fixed problem reports integrated: 11908- Generate error if CreateField NumBits parameter is zero. (BZ 405) 11909- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 11910Suietov) 11911- Global table revision override (-r) is ignored (BZ 413) 11912 11913---------------------------------------- 1191426 May 2006. Summary of changes for version 20060526: 11915 119161) ACPI CA Core Subsystem: 11917 11918Restructured, flattened, and simplified the internal interfaces for 11919namespace object evaluation - resulting in smaller code, less CPU stack 11920use, 11921and fewer interfaces. (With assistance from Mikhail Kouzmich) 11922 11923Fixed a problem with the CopyObject operator where the first parameter 11924was 11925not typed correctly for the parser, interpreter, compiler, and 11926disassembler. 11927Caused various errors and unexpected behavior. 11928 11929Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 11930produced incorrect results with some C compilers. Since the behavior of C 11931compilers when the shift value is larger than the datatype width is 11932apparently not well defined, the interpreter now detects this condition 11933and 11934simply returns zero as expected in all such cases. (BZ 395) 11935 11936Fixed problem reports (Valery Podrezov) integrated: 11937- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 11938- Allow interpreter to handle nested method declarations (BZ 5361) 11939 11940Fixed problem reports (Fiodor Suietov) integrated: 11941- AcpiTerminate doesn't free debug memory allocation list objects (BZ 11942355) 11943- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 11944356) 11945- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 11946- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 11947- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 11948- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 11949- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 11950- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 11951- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 11952365) 11953- Status of the Global Initialization Handler call not used (BZ 366) 11954- Incorrect object parameter to Global Initialization Handler (BZ 367) 11955 11956Example Code and Data Size: These are the sizes for the OS-independent 11957acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 11958debug version of the code includes the debug output trace mechanism and 11959has 11960a much larger code and data size. 11961 11962 Previous Release: 11963 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 11964 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 11965 Current Release: 11966 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 11967 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 11968 11969 119702) iASL Compiler/Disassembler and Tools: 11971 11972Modified the parser to allow the names IO, DMA, and IRQ to be used as 11973namespace identifiers with no collision with existing resource descriptor 11974macro names. This provides compatibility with other ASL compilers and is 11975most useful for disassembly/recompilation of existing tables without 11976parse 11977errors. (With assistance from Thomas Renninger) 11978 11979Disassembler: fixed an incorrect disassembly problem with the 11980DataTableRegion and CopyObject operators. Fixed a possible fault during 11981disassembly of some Alias operators. 11982 11983---------------------------------------- 1198412 May 2006. Summary of changes for version 20060512: 11985 119861) ACPI CA Core Subsystem: 11987 11988Replaced the AcpiOsQueueForExecution interface with a new interface named 11989AcpiOsExecute. The major difference is that the new interface does not 11990have 11991a Priority parameter, this appeared to be useless and has been replaced 11992by 11993a 11994Type parameter. The Type tells the host what type of execution is being 11995requested, such as global lock handler, notify handler, GPE handler, etc. 11996This allows the host to queue and execute the request as appropriate for 11997the 11998request type, possibly using different work queues and different 11999priorities 12000for the various request types. This enables fixes for multithreading 12001deadlock problems such as BZ #5534, and will require changes to all 12002existing 12003OS interface layers. (Alexey Starikovskiy and Bob Moore) 12004 12005Fixed a possible memory leak associated with the support for the so- 12006called 12007"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 12008Suietov) 12009 12010Fixed a problem with the Load() operator where a table load from an 12011operation region could overwrite an internal table buffer by up to 7 12012bytes 12013and cause alignment faults on IPF systems. (With assistance from Luming 12014Yu) 12015 12016Example Code and Data Size: These are the sizes for the OS-independent 12017acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12018debug version of the code includes the debug output trace mechanism and 12019has 12020a much larger code and data size. 12021 12022 Previous Release: 12023 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 12024 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 12025 Current Release: 12026 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 12027 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 12028 12029 12030 120312) iASL Compiler/Disassembler and Tools: 12032 12033Disassembler: Implemented support to cross reference the internal 12034namespace 12035and automatically generate ASL External() statements for symbols not 12036defined 12037within the current table being disassembled. This will simplify the 12038disassembly and recompilation of interdependent tables such as SSDTs 12039since 12040these statements will no longer have to be added manually. 12041 12042Disassembler: Implemented experimental support to automatically detect 12043invocations of external control methods and generate appropriate 12044External() 12045statements. This is problematic because the AML cannot be correctly 12046parsed 12047until the number of arguments for each control method is known. 12048Currently, 12049standalone method invocations and invocations as the source operand of a 12050Store() statement are supported. 12051 12052Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 12053LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 12054LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 12055more readable and likely closer to the original ASL source. 12056 12057---------------------------------------- 1205821 April 2006. Summary of changes for version 20060421: 12059 120601) ACPI CA Core Subsystem: 12061 12062Removed a device initialization optimization introduced in 20051216 where 12063the _STA method was not run unless an _INI was also present for the same 12064device. This optimization could cause problems because it could allow 12065_INI 12066methods to be run within a not-present device subtree. (If a not-present 12067device had no _INI, _STA would not be run, the not-present status would 12068not 12069be discovered, and the children of the device would be incorrectly 12070traversed.) 12071 12072Implemented a new _STA optimization where namespace subtrees that do not 12073contain _INI are identified and ignored during device initialization. 12074Selectively running _STA can significantly improve boot time on large 12075machines (with assistance from Len Brown.) 12076 12077Implemented support for the device initialization case where the returned 12078_STA flags indicate a device not-present but functioning. In this case, 12079_INI 12080is not run, but the device children are examined for presence, as per the 12081ACPI specification. 12082 12083Implemented an additional change to the IndexField support in order to 12084conform to MS behavior. The value written to the Index Register is not 12085simply a byte offset, it is a byte offset in units of the access width of 12086the parent Index Field. (Fiodor Suietov) 12087 12088Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 12089interface is called during the creation of all AML operation regions, and 12090allows the host OS to exert control over what addresses it will allow the 12091AML code to access. Operation Regions whose addresses are disallowed will 12092cause a runtime exception when they are actually accessed (will not 12093affect 12094or abort table loading.) See oswinxf or osunixxf for an example 12095implementation. 12096 12097Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 12098interface allows the host OS to match the various "optional" 12099interface/behavior strings for the _OSI predefined control method as 12100appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 12101for an example implementation. 12102 12103Restructured and corrected various problems in the exception handling 12104code 12105paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 12106(with assistance from Takayoshi Kochi.) 12107 12108Modified the Linux source converter to ignore quoted string literals 12109while 12110converting identifiers from mixed to lower case. This will correct 12111problems 12112with the disassembler and other areas where such strings must not be 12113modified. 12114 12115The ACPI_FUNCTION_* macros no longer require quotes around the function 12116name. This allows the Linux source converter to convert the names, now 12117that 12118the converter ignores quoted strings. 12119 12120Example Code and Data Size: These are the sizes for the OS-independent 12121acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12122debug version of the code includes the debug output trace mechanism and 12123has 12124a much larger code and data size. 12125 12126 Previous Release: 12127 12128 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 12129 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 12130 Current Release: 12131 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 12132 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 12133 12134 121352) iASL Compiler/Disassembler and Tools: 12136 12137Implemented 3 new warnings for iASL, and implemented multiple warning 12138levels 12139(w2 flag). 12140 121411) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 12142not 12143WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 12144check for the possible timeout, a warning is issued. 12145 121462) Useless operators: If an ASL operator does not specify an optional 12147target 12148operand and it also does not use the function return value from the 12149operator, a warning is issued since the operator effectively does 12150nothing. 12151 121523) Unreferenced objects: If a namespace object is created, but never 12153referenced, a warning is issued. This is a warning level 2 since there 12154are 12155cases where this is ok, such as when a secondary table is loaded that 12156uses 12157the unreferenced objects. Even so, care is taken to only flag objects 12158that 12159don't look like they will ever be used. For example, the reserved methods 12160(starting with an underscore) are usually not referenced because it is 12161expected that the OS will invoke them. 12162 12163---------------------------------------- 1216431 March 2006. Summary of changes for version 20060331: 12165 121661) ACPI CA Core Subsystem: 12167 12168Implemented header file support for the following additional ACPI tables: 12169ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 12170support, 12171all current and known ACPI tables are now defined in the ACPICA headers 12172and 12173are available for use by device drivers and other software. 12174 12175Implemented support to allow tables that contain ACPI names with invalid 12176characters to be loaded. Previously, this would cause the table load to 12177fail, but since there are several known cases of such tables on existing 12178machines, this change was made to enable ACPI support for them. Also, 12179this 12180matches the behavior of the Microsoft ACPI implementation. 12181 12182Fixed a couple regressions introduced during the memory optimization in 12183the 1218420060317 release. The namespace node definition required additional 12185reorganization and an internal datatype that had been changed to 8-bit 12186was 12187restored to 32-bit. (Valery Podrezov) 12188 12189Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 12190could be passed through to AcpiOsReleaseObject which is unexpected. Such 12191null pointers are now trapped and ignored, matching the behavior of the 12192previous implementation before the deployment of AcpiOsReleaseObject. 12193(Valery Podrezov, Fiodor Suietov) 12194 12195Fixed a memory mapping leak during the deletion of a SystemMemory 12196operation 12197region where a cached memory mapping was not deleted. This became a 12198noticeable problem for operation regions that are defined within 12199frequently 12200used control methods. (Dana Meyers) 12201 12202Reorganized the ACPI table header files into two main files: one for the 12203ACPI tables consumed by the ACPICA core, and another for the 12204miscellaneous 12205ACPI tables that are consumed by the drivers and other software. The 12206various 12207FADT definitions were merged into one common section and three different 12208tables (ACPI 1.0, 1.0+, and 2.0) 12209 12210Example Code and Data Size: These are the sizes for the OS-independent 12211acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 12212debug version of the code includes the debug output trace mechanism and 12213has 12214a much larger code and data size. 12215 12216 Previous Release: 12217 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 12218 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 12219 Current Release: 12220 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 12221 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 12222 12223 122242) iASL Compiler/Disassembler and Tools: 12225 12226Disassembler: Implemented support to decode and format all non-AML ACPI 12227tables (tables other than DSDTs and SSDTs.) This includes the new tables 12228added to the ACPICA headers, therefore all current and known ACPI tables 12229are 12230supported. 12231 12232Disassembler: The change to allow ACPI names with invalid characters also 12233enables the disassembly of such tables. Invalid characters within names 12234are 12235changed to '*' to make the name printable; the iASL compiler will still 12236generate an error for such names, however, since this is an invalid ACPI 12237character. 12238 12239Implemented an option for AcpiXtract (-a) to extract all tables found in 12240the 12241input file. The default invocation extracts only the DSDTs and SSDTs. 12242 12243Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 12244makefile for the AcpiXtract utility. 12245 12246---------------------------------------- 1224717 March 2006. Summary of changes for version 20060317: 12248 122491) ACPI CA Core Subsystem: 12250 12251Implemented the use of a cache object for all internal namespace nodes. 12252Since there are about 1000 static nodes in a typical system, this will 12253decrease memory use for cache implementations that minimize per- 12254allocation 12255overhead (such as a slab allocator.) 12256 12257Removed the reference count mechanism for internal namespace nodes, since 12258it 12259was deemed unnecessary. This reduces the size of each namespace node by 12260about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 12261case, 12262and 32 bytes for the 64-bit case. 12263 12264Optimized several internal data structures to reduce object size on 64- 12265bit 12266platforms by packing data within the 64-bit alignment. This includes the 12267frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 12268instances corresponding to the namespace objects. 12269 12270Added two new strings for the predefined _OSI method: "Windows 2001.1 12271SP1" 12272and "Windows 2006". 12273 12274Split the allocation tracking mechanism out to a separate file, from 12275utalloc.c to uttrack.c. This mechanism appears to be only useful for 12276application-level code. Kernels may wish to not include uttrack.c in 12277distributions. 12278 12279Removed all remnants of the obsolete ACPI_REPORT_* macros and the 12280associated 12281code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 12282macros.) 12283 12284Code and Data Size: These are the sizes for the acpica.lib produced by 12285the 12286Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12287ACPI 12288driver or OSPM code. The debug version of the code includes the debug 12289output 12290trace mechanism and has a much larger code and data size. Note that these 12291values will vary depending on the efficiency of the compiler and the 12292compiler options used during generation. 12293 12294 Previous Release: 12295 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12296 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12297 Current Release: 12298 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 12299 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 12300 12301 123022) iASL Compiler/Disassembler and Tools: 12303 12304Implemented an ANSI C version of the acpixtract utility. This version 12305will 12306automatically extract the DSDT and all SSDTs from the input acpidump text 12307file and dump the binary output to separate files. It can also display a 12308summary of the input file including the headers for each table found and 12309will extract any single ACPI table, with any signature. (See 12310source/tools/acpixtract) 12311 12312---------------------------------------- 1231310 March 2006. Summary of changes for version 20060310: 12314 123151) ACPI CA Core Subsystem: 12316 12317Tagged all external interfaces to the subsystem with the new 12318ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 12319assist 12320kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 12321macro. The default definition is NULL. 12322 12323Added the ACPI_THREAD_ID type for the return value from 12324AcpiOsGetThreadId. 12325This allows the host to define this as necessary to simplify kernel 12326integration. The default definition is ACPI_NATIVE_UINT. 12327 12328Fixed two interpreter problems related to error processing, the deletion 12329of 12330objects, and placing invalid pointers onto the internal operator result 12331stack. BZ 6028, 6151 (Valery Podrezov) 12332 12333Increased the reference count threshold where a warning is emitted for 12334large 12335reference counts in order to eliminate unnecessary warnings on systems 12336with 12337large namespaces (especially 64-bit.) Increased the value from 0x400 to 123380x800. 12339 12340Due to universal disagreement as to the meaning of the 'c' in the 12341calloc() 12342function, the ACPI_MEM_CALLOCATE macro has been renamed to 12343ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 12344ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 12345ACPI_FREE. 12346 12347Code and Data Size: These are the sizes for the acpica.lib produced by 12348the 12349Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12350ACPI 12351driver or OSPM code. The debug version of the code includes the debug 12352output 12353trace mechanism and has a much larger code and data size. Note that these 12354values will vary depending on the efficiency of the compiler and the 12355compiler options used during generation. 12356 12357 Previous Release: 12358 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12359 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12360 Current Release: 12361 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12362 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 12363 12364 123652) iASL Compiler/Disassembler: 12366 12367Disassembler: implemented support for symbolic resource descriptor 12368references. If a CreateXxxxField operator references a fixed offset 12369within 12370a 12371resource descriptor, a name is assigned to the descriptor and the offset 12372is 12373translated to the appropriate resource tag and pathname. The addition of 12374this support brings the disassembled code very close to the original ASL 12375source code and helps eliminate run-time errors when the disassembled 12376code 12377is modified (and recompiled) in such a way as to invalidate the original 12378fixed offsets. 12379 12380Implemented support for a Descriptor Name as the last parameter to the 12381ASL 12382Register() macro. This parameter was inadvertently left out of the ACPI 12383specification, and will be added for ACPI 3.0b. 12384 12385Fixed a problem where the use of the "_OSI" string (versus the full path 12386"\_OSI") caused an internal compiler error. ("No back ptr to op") 12387 12388Fixed a problem with the error message that occurs when an invalid string 12389is 12390used for a _HID object (such as one with an embedded asterisk: 12391"*PNP010A".) 12392The correct message is now displayed. 12393 12394---------------------------------------- 1239517 February 2006. Summary of changes for version 20060217: 12396 123971) ACPI CA Core Subsystem: 12398 12399Implemented a change to the IndexField support to match the behavior of 12400the 12401Microsoft AML interpreter. The value written to the Index register is now 12402a 12403byte offset, no longer an index based upon the width of the Data 12404register. 12405This should fix IndexField problems seen on some machines where the Data 12406register is not exactly one byte wide. The ACPI specification will be 12407clarified on this point. 12408 12409Fixed a problem where several resource descriptor types could overrun the 12410internal descriptor buffer due to size miscalculation: VendorShort, 12411VendorLong, and Interrupt. This was noticed on IA64 machines, but could 12412affect all platforms. 12413 12414Fixed a problem where individual resource descriptors were misaligned 12415within 12416the internal buffer, causing alignment faults on IA64 platforms. 12417 12418Code and Data Size: These are the sizes for the acpica.lib produced by 12419the 12420Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 12421ACPI 12422driver or OSPM code. The debug version of the code includes the debug 12423output 12424trace mechanism and has a much larger code and data size. Note that these 12425values will vary depending on the efficiency of the compiler and the 12426compiler options used during generation. 12427 12428 Previous Release: 12429 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12430 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12431 Current Release: 12432 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 12433 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 12434 12435 124362) iASL Compiler/Disassembler: 12437 12438Implemented support for new reserved names: _WDG and _WED are Microsoft 12439extensions for Windows Instrumentation Management, _TDL is a new ACPI- 12440defined method (Throttling Depth Limit.) 12441 12442Fixed a problem where a zero-length VendorShort or VendorLong resource 12443descriptor was incorrectly emitted as a descriptor of length one. 12444 12445---------------------------------------- 1244610 February 2006. Summary of changes for version 20060210: 12447 124481) ACPI CA Core Subsystem: 12449 12450Removed a couple of extraneous ACPI_ERROR messages that appeared during 12451normal execution. These became apparent after the conversion from 12452ACPI_DEBUG_PRINT. 12453 12454Fixed a problem where the CreateField operator could hang if the BitIndex 12455or 12456NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 12457 12458Fixed a problem where a DeRefOf operation on a buffer object incorrectly 12459failed with an exception. This also fixes a couple of related RefOf and 12460DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 12461 12462Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 12463of 12464AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 12465BZ 124665480) 12467 12468Implemented a memory cleanup at the end of the execution of each 12469iteration 12470of an AML While() loop, preventing the accumulation of outstanding 12471objects. 12472(Valery Podrezov, BZ 5427) 12473 12474Eliminated a chunk of duplicate code in the object resolution code. 12475(Valery 12476Podrezov, BZ 5336) 12477 12478Fixed several warnings during the 64-bit code generation. 12479 12480The AcpiSrc source code conversion tool now inserts one line of 12481whitespace 12482after an if() statement that is followed immediately by a comment, 12483improving 12484readability of the Linux code. 12485 12486Code and Data Size: The current and previous library sizes for the core 12487subsystem are shown below. These are the code and data sizes for the 12488acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12489These 12490values do not include any ACPI driver or OSPM code. The debug version of 12491the 12492code includes the debug output trace mechanism and has a much larger code 12493and data size. Note that these values will vary depending on the 12494efficiency 12495of the compiler and the compiler options used during generation. 12496 12497 Previous Release: 12498 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12499 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12500 Current Release: 12501 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 12502 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 12503 12504 125052) iASL Compiler/Disassembler: 12506 12507Fixed a problem with the disassembly of a BankField operator with a 12508complex 12509expression for the BankValue parameter. 12510 12511---------------------------------------- 1251227 January 2006. Summary of changes for version 20060127: 12513 125141) ACPI CA Core Subsystem: 12515 12516Implemented support in the Resource Manager to allow unresolved 12517namestring 12518references within resource package objects for the _PRT method. This 12519support 12520is in addition to the previously implemented unresolved reference support 12521within the AML parser. If the interpreter slack mode is enabled, these 12522unresolved references will be passed through to the caller as a NULL 12523package 12524entry. 12525 12526Implemented and deployed new macros and functions for error and warning 12527messages across the subsystem. These macros are simpler and generate less 12528code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 12529ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 12530macros remain defined to allow ACPI drivers time to migrate to the new 12531macros. 12532 12533Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 12534the 12535Acquire/Release Lock OSL interfaces. 12536 12537Fixed a problem where Alias ASL operators are sometimes not correctly 12538resolved, in both the interpreter and the iASL compiler. 12539 12540Fixed several problems with the implementation of the 12541ConcatenateResTemplate 12542ASL operator. As per the ACPI specification, zero length buffers are now 12543treated as a single EndTag. One-length buffers always cause a fatal 12544exception. Non-zero length buffers that do not end with a full 2-byte 12545EndTag 12546cause a fatal exception. 12547 12548Fixed a possible structure overwrite in the AcpiGetObjectInfo external 12549interface. (With assistance from Thomas Renninger) 12550 12551Code and Data Size: The current and previous library sizes for the core 12552subsystem are shown below. These are the code and data sizes for the 12553acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12554These 12555values do not include any ACPI driver or OSPM code. The debug version of 12556the 12557code includes the debug output trace mechanism and has a much larger code 12558and data size. Note that these values will vary depending on the 12559efficiency 12560of the compiler and the compiler options used during generation. 12561 12562 Previous Release: 12563 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12564 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12565 Current Release: 12566 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 12567 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 12568 12569 125702) iASL Compiler/Disassembler: 12571 12572Fixed an internal error that was generated for any forward references to 12573ASL 12574Alias objects. 12575 12576---------------------------------------- 1257713 January 2006. Summary of changes for version 20060113: 12578 125791) ACPI CA Core Subsystem: 12580 12581Added 2006 copyright to all module headers and signons. This affects 12582virtually every file in the ACPICA core subsystem, iASL compiler, and the 12583utilities. 12584 12585Enhanced the ACPICA error reporting in order to simplify user migration 12586to 12587the non-debug version of ACPICA. Replaced all instances of the 12588ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 12589debug 12590levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 12591respectively. This preserves all error and warning messages in the non- 12592debug 12593version of the ACPICA code (this has been referred to as the "debug lite" 12594option.) Over 200 cases were converted to create a total of over 380 12595error/warning messages across the ACPICA code. This increases the code 12596and 12597data size of the default non-debug version of the code somewhat (about 1259813K), 12599but all error/warning reporting may be disabled if desired (and code 12600eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 12601configuration option. The size of the debug version of ACPICA remains 12602about 12603the same. 12604 12605Fixed a memory leak within the AML Debugger "Set" command. One object was 12606not properly deleted for every successful invocation of the command. 12607 12608Code and Data Size: The current and previous library sizes for the core 12609subsystem are shown below. These are the code and data sizes for the 12610acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12611These 12612values do not include any ACPI driver or OSPM code. The debug version of 12613the 12614code includes the debug output trace mechanism and has a much larger code 12615and data size. Note that these values will vary depending on the 12616efficiency 12617of the compiler and the compiler options used during generation. 12618 12619 Previous Release: 12620 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12621 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12622 Current Release: 12623 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 12624 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 12625 12626 126272) iASL Compiler/Disassembler: 12628 12629The compiler now officially supports the ACPI 3.0a specification that was 12630released on December 30, 2005. (Specification is available at 12631www.acpi.info) 12632 12633---------------------------------------- 1263416 December 2005. Summary of changes for version 20051216: 12635 126361) ACPI CA Core Subsystem: 12637 12638Implemented optional support to allow unresolved names within ASL Package 12639objects. A null object is inserted in the package when a named reference 12640cannot be located in the current namespace. Enabled via the interpreter 12641slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 12642machines 12643that contain such code. 12644 12645Implemented an optimization to the initialization sequence that can 12646improve 12647boot time. During ACPI device initialization, the _STA method is now run 12648if 12649and only if the _INI method exists. The _STA method is used to determine 12650if 12651the device is present; An _INI can only be run if _STA returns present, 12652but 12653it is a waste of time to run the _STA method if the _INI does not exist. 12654(Prototype and assistance from Dong Wei) 12655 12656Implemented use of the C99 uintptr_t for the pointer casting macros if it 12657is 12658available in the current compiler. Otherwise, the default (void *) cast 12659is 12660used as before. 12661 12662Fixed some possible memory leaks found within the execution path of the 12663Break, Continue, If, and CreateField operators. (Valery Podrezov) 12664 12665Fixed a problem introduced in the 20051202 release where an exception is 12666generated during method execution if a control method attempts to declare 12667another method. 12668 12669Moved resource descriptor string constants that are used by both the AML 12670disassembler and AML debugger to the common utilities directory so that 12671these components are independent. 12672 12673Implemented support in the AcpiExec utility (-e switch) to globally 12674ignore 12675exceptions during control method execution (method is not aborted.) 12676 12677Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 12678generation. 12679 12680Code and Data Size: The current and previous library sizes for the core 12681subsystem are shown below. These are the code and data sizes for the 12682acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12683These 12684values do not include any ACPI driver or OSPM code. The debug version of 12685the 12686code includes the debug output trace mechanism and has a much larger code 12687and data size. Note that these values will vary depending on the 12688efficiency 12689of the compiler and the compiler options used during generation. 12690 12691 Previous Release: 12692 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12693 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12694 Current Release: 12695 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 12696 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 12697 12698 126992) iASL Compiler/Disassembler: 12700 12701Fixed a problem where a CPU stack overflow fault could occur if a 12702recursive 12703method call was made from within a Return statement. 12704 12705---------------------------------------- 1270602 December 2005. Summary of changes for version 20051202: 12707 127081) ACPI CA Core Subsystem: 12709 12710Modified the parsing of control methods to no longer create namespace 12711objects during the first pass of the parse. Objects are now created only 12712during the execute phase, at the moment the namespace creation operator 12713is 12714encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 12715This 12716should eliminate ALREADY_EXISTS exceptions seen on some machines where 12717reentrant control methods are protected by an AML mutex. The mutex will 12718now 12719correctly block multiple threads from attempting to create the same 12720object 12721more than once. 12722 12723Increased the number of available Owner Ids for namespace object tracking 12724from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 12725on 12726some machines with a large number of ACPI tables (either static or 12727dynamic). 12728 12729Fixed a problem with the AcpiExec utility where a fault could occur when 12730the 12731-b switch (batch mode) is used. 12732 12733Enhanced the namespace dump routine to output the owner ID for each 12734namespace object. 12735 12736Code and Data Size: The current and previous library sizes for the core 12737subsystem are shown below. These are the code and data sizes for the 12738acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12739These 12740values do not include any ACPI driver or OSPM code. The debug version of 12741the 12742code includes the debug output trace mechanism and has a much larger code 12743and data size. Note that these values will vary depending on the 12744efficiency 12745of the compiler and the compiler options used during generation. 12746 12747 Previous Release: 12748 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12749 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12750 Current Release: 12751 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12752 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 12753 12754 127552) iASL Compiler/Disassembler: 12756 12757Fixed a parse error during compilation of certain Switch/Case constructs. 12758To 12759simplify the parse, the grammar now allows for multiple Default 12760statements 12761and this error is now detected and flagged during the analysis phase. 12762 12763Disassembler: The disassembly now includes the contents of the original 12764table header within a comment at the start of the file. This includes the 12765name and version of the original ASL compiler. 12766 12767---------------------------------------- 1276817 November 2005. Summary of changes for version 20051117: 12769 127701) ACPI CA Core Subsystem: 12771 12772Fixed a problem in the AML parser where the method thread count could be 12773decremented below zero if any errors occurred during the method parse 12774phase. 12775This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 12776machines. 12777This also fixed a related regression with the mechanism that detects and 12778corrects methods that cannot properly handle reentrancy (related to the 12779deployment of the new OwnerId mechanism.) 12780 12781Eliminated the pre-parsing of control methods (to detect errors) during 12782table load. Related to the problem above, this was causing unwind issues 12783if 12784any errors occurred during the parse, and it seemed to be overkill. A 12785table 12786load should not be aborted if there are problems with any single control 12787method, thus rendering this feature rather pointless. 12788 12789Fixed a problem with the new table-driven resource manager where an 12790internal 12791buffer overflow could occur for small resource templates. 12792 12793Implemented a new external interface, AcpiGetVendorResource. This 12794interface 12795will find and return a vendor-defined resource descriptor within a _CRS 12796or 12797_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 12798Helgaas. 12799 12800Removed the length limit (200) on string objects as per the upcoming ACPI 128013.0A specification. This affects the following areas of the interpreter: 128021) 12803any implicit conversion of a Buffer to a String, 2) a String object 12804result 12805of the ASL Concatenate operator, 3) the String object result of the ASL 12806ToString operator. 12807 12808Fixed a problem in the Windows OS interface layer (OSL) where a 12809WAIT_FOREVER 12810on a semaphore object would incorrectly timeout. This allows the 12811multithreading features of the AcpiExec utility to work properly under 12812Windows. 12813 12814Updated the Linux makefiles for the iASL compiler and AcpiExec to include 12815the recently added file named "utresrc.c". 12816 12817Code and Data Size: The current and previous library sizes for the core 12818subsystem are shown below. These are the code and data sizes for the 12819acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12820These 12821values do not include any ACPI driver or OSPM code. The debug version of 12822the 12823code includes the debug output trace mechanism and has a much larger code 12824and data size. Note that these values will vary depending on the 12825efficiency 12826of the compiler and the compiler options used during generation. 12827 12828 Previous Release: 12829 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 12830 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12831 Current Release: 12832 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 12833 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12834 12835 128362) iASL Compiler/Disassembler: 12837 12838Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 12839specification. For the iASL compiler, this means that string literals 12840within 12841the source ASL can be of any length. 12842 12843Enhanced the listing output to dump the AML code for resource descriptors 12844immediately after the ASL code for each descriptor, instead of in a block 12845at 12846the end of the entire resource template. 12847 12848Enhanced the compiler debug output to dump the entire original parse tree 12849constructed during the parse phase, before any transforms are applied to 12850the 12851tree. The transformed tree is dumped also. 12852 12853---------------------------------------- 1285402 November 2005. Summary of changes for version 20051102: 12855 128561) ACPI CA Core Subsystem: 12857 12858Modified the subsystem initialization sequence to improve GPE support. 12859The 12860GPE initialization has been split into two parts in order to defer 12861execution 12862of the _PRW methods (Power Resources for Wake) until after the hardware 12863is 12864fully initialized and the SCI handler is installed. This allows the _PRW 12865methods to access fields protected by the Global Lock. This will fix 12866systems 12867where a NO_GLOBAL_LOCK exception has been seen during initialization. 12868 12869Converted the ACPI internal object disassemble and display code within 12870the 12871AML debugger to fully table-driven operation, reducing code size and 12872increasing maintainability. 12873 12874Fixed a regression with the ConcatenateResTemplate() ASL operator 12875introduced 12876in the 20051021 release. 12877 12878Implemented support for "local" internal ACPI object types within the 12879debugger "Object" command and the AcpiWalkNamespace external interfaces. 12880These local types include RegionFields, BankFields, IndexFields, Alias, 12881and 12882reference objects. 12883 12884Moved common AML resource handling code into a new file, "utresrc.c". 12885This 12886code is shared by both the Resource Manager and the AML Debugger. 12887 12888Code and Data Size: The current and previous library sizes for the core 12889subsystem are shown below. These are the code and data sizes for the 12890acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12891These 12892values do not include any ACPI driver or OSPM code. The debug version of 12893the 12894code includes the debug output trace mechanism and has a much larger code 12895and data size. Note that these values will vary depending on the 12896efficiency 12897of the compiler and the compiler options used during generation. 12898 12899 Previous Release: 12900 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 12901 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 12902 Current Release: 12903 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 12904 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 12905 12906 129072) iASL Compiler/Disassembler: 12908 12909Fixed a problem with very large initializer lists (more than 4000 12910elements) 12911for both Buffer and Package objects where the parse stack could overflow. 12912 12913Enhanced the pre-compile source code scan for non-ASCII characters to 12914ignore 12915characters within comment fields. The scan is now always performed and is 12916no 12917longer optional, detecting invalid characters within a source file 12918immediately rather than during the parse phase or later. 12919 12920Enhanced the ASL grammar definition to force early reductions on all 12921list- 12922style grammar elements so that the overall parse stack usage is greatly 12923reduced. This should improve performance and reduce the possibility of 12924parse 12925stack overflow. 12926 12927Eliminated all reduce/reduce conflicts in the iASL parser generation. 12928Also, 12929with the addition of a %expected statement, the compiler generates from 12930source with no warnings. 12931 12932Fixed a possible segment fault in the disassembler if the input filename 12933does not contain a "dot" extension (Thomas Renninger). 12934 12935---------------------------------------- 1293621 October 2005. Summary of changes for version 20051021: 12937 129381) ACPI CA Core Subsystem: 12939 12940Implemented support for the EM64T and other x86-64 processors. This 12941essentially entails recognizing that these processors support non-aligned 12942memory transfers. Previously, all 64-bit processors were assumed to lack 12943hardware support for non-aligned transfers. 12944 12945Completed conversion of the Resource Manager to nearly full table-driven 12946operation. Specifically, the resource conversion code (convert AML to 12947internal format and the reverse) and the debug code to dump internal 12948resource descriptors are fully table-driven, reducing code and data size 12949and 12950improving maintainability. 12951 12952The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 12953word 12954on 64-bit processors instead of a fixed 32-bit word. (With assistance 12955from 12956Alexey Starikovskiy) 12957 12958Implemented support within the resource conversion code for the Type- 12959Specific byte within the various ACPI 3.0 *WordSpace macros. 12960 12961Fixed some issues within the resource conversion code for the type- 12962specific 12963flags for both Memory and I/O address resource descriptors. For Memory, 12964implemented support for the MTP and TTP flags. For I/O, split the TRS and 12965TTP flags into two separate fields. 12966 12967Code and Data Size: The current and previous library sizes for the core 12968subsystem are shown below. These are the code and data sizes for the 12969acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 12970These 12971values do not include any ACPI driver or OSPM code. The debug version of 12972the 12973code includes the debug output trace mechanism and has a much larger code 12974and data size. Note that these values will vary depending on the 12975efficiency 12976of the compiler and the compiler options used during generation. 12977 12978 Previous Release: 12979 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 12980 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 12981 Current Release: 12982 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 12983 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 12984 12985 12986 129872) iASL Compiler/Disassembler: 12988 12989Relaxed a compiler restriction that disallowed a ResourceIndex byte if 12990the 12991corresponding ResourceSource string was not also present in a resource 12992descriptor declaration. This restriction caused problems with existing 12993AML/ASL code that includes the Index byte without the string. When such 12994AML 12995was disassembled, it could not be compiled without modification. Further, 12996the modified code created a resource template with a different size than 12997the 12998original, breaking code that used fixed offsets into the resource 12999template 13000buffer. 13001 13002Removed a recent feature of the disassembler to ignore a lone 13003ResourceIndex 13004byte. This byte is now emitted if present so that the exact AML can be 13005reproduced when the disassembled code is recompiled. 13006 13007Improved comments and text alignment for the resource descriptor code 13008emitted by the disassembler. 13009 13010Implemented disassembler support for the ACPI 3.0 AccessSize field within 13011a 13012Register() resource descriptor. 13013 13014---------------------------------------- 1301530 September 2005. Summary of changes for version 20050930: 13016 130171) ACPI CA Core Subsystem: 13018 13019Completed a major overhaul of the Resource Manager code - specifically, 13020optimizations in the area of the AML/internal resource conversion code. 13021The 13022code has been optimized to simplify and eliminate duplicated code, CPU 13023stack 13024use has been decreased by optimizing function parameters and local 13025variables, and naming conventions across the manager have been 13026standardized 13027for clarity and ease of maintenance (this includes function, parameter, 13028variable, and struct/typedef names.) The update may force changes in some 13029driver code, depending on how resources are handled by the host OS. 13030 13031All Resource Manager dispatch and information tables have been moved to a 13032single location for clarity and ease of maintenance. One new file was 13033created, named "rsinfo.c". 13034 13035The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 13036guarantee that the argument is not evaluated twice, making them less 13037prone 13038to macro side-effects. However, since there exists the possibility of 13039additional stack use if a particular compiler cannot optimize them (such 13040as 13041in the debug generation case), the original macros are optionally 13042available. 13043Note that some invocations of the return_VALUE macro may now cause size 13044mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 13045to 13046eliminate these. (From Randy Dunlap) 13047 13048Implemented a new mechanism to enable debug tracing for individual 13049control 13050methods. A new external interface, AcpiDebugTrace, is provided to enable 13051this mechanism. The intent is to allow the host OS to easily enable and 13052disable tracing for problematic control methods. This interface can be 13053easily exposed to a user or debugger interface if desired. See the file 13054psxface.c for details. 13055 13056AcpiUtCallocate will now return a valid pointer if a length of zero is 13057specified - a length of one is used and a warning is issued. This matches 13058the behavior of AcpiUtAllocate. 13059 13060Code and Data Size: The current and previous library sizes for the core 13061subsystem are shown below. These are the code and data sizes for the 13062acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13063These 13064values do not include any ACPI driver or OSPM code. The debug version of 13065the 13066code includes the debug output trace mechanism and has a much larger code 13067and data size. Note that these values will vary depending on the 13068efficiency 13069of the compiler and the compiler options used during generation. 13070 13071 Previous Release: 13072 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 13073 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 13074 Current Release: 13075 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 13076 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 13077 13078 130792) iASL Compiler/Disassembler: 13080 13081A remark is issued if the effective compile-time length of a package or 13082buffer is zero. Previously, this was a warning. 13083 13084---------------------------------------- 1308516 September 2005. Summary of changes for version 20050916: 13086 130871) ACPI CA Core Subsystem: 13088 13089Fixed a problem within the Resource Manager where support for the Generic 13090Register descriptor was not fully implemented. This descriptor is now 13091fully 13092recognized, parsed, disassembled, and displayed. 13093 13094Completely restructured the Resource Manager code to utilize table-driven 13095dispatch and lookup, eliminating many of the large switch() statements. 13096This 13097reduces overall subsystem code size and code complexity. Affects the 13098resource parsing and construction, disassembly, and debug dump output. 13099 13100Cleaned up and restructured the debug dump output for all resource 13101descriptors. Improved readability of the output and reduced code size. 13102 13103Fixed a problem where changes to internal data structures caused the 13104optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 13105 13106Code and Data Size: The current and previous library sizes for the core 13107subsystem are shown below. These are the code and data sizes for the 13108acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 13109These 13110values do not include any ACPI driver or OSPM code. The debug version of 13111the 13112code includes the debug output trace mechanism and has a much larger code 13113and data size. Note that these values will vary depending on the 13114efficiency 13115of the compiler and the compiler options used during generation. 13116 13117 Previous Release: 13118 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 13119 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 13120 Current Release: 13121 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 13122 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 13123 13124 131252) iASL Compiler/Disassembler: 13126 13127Updated the disassembler to automatically insert an EndDependentFn() 13128macro 13129into the ASL stream if this macro is missing in the original AML code, 13130simplifying compilation of the resulting ASL module. 13131 13132Fixed a problem in the disassembler where a disassembled ResourceSource 13133string (within a large resource descriptor) was not surrounded by quotes 13134and 13135not followed by a comma, causing errors when the resulting ASL module was 13136compiled. Also, escape sequences within a ResourceSource string are now 13137handled correctly (especially "\\") 13138 13139---------------------------------------- 1314002 September 2005. Summary of changes for version 20050902: 13141 131421) ACPI CA Core Subsystem: 13143 13144Fixed a problem with the internal Owner ID allocation and deallocation 13145mechanisms for control method execution and recursive method invocation. 13146This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 13147messages seen on some systems. Recursive method invocation depth is 13148currently limited to 255. (Alexey Starikovskiy) 13149 13150Completely eliminated all vestiges of support for the "module-level 13151executable code" until this support is fully implemented and debugged. 13152This 13153should eliminate the NO_RETURN_VALUE exceptions seen during table load on 13154some systems that invoke this support. 13155 13156Fixed a problem within the resource manager code where the transaction 13157flags 13158for a 64-bit address descriptor were handled incorrectly in the type- 13159specific flag byte. 13160 13161Consolidated duplicate code within the address descriptor resource 13162manager 13163code, reducing overall subsystem code size. 13164 13165Fixed a fault when using the AML debugger "disassemble" command to 13166disassemble individual control methods. 13167 13168Removed references to the "release_current" directory within the Unix 13169release package. 13170 13171Code and Data Size: The current and previous core subsystem library sizes 13172are shown below. These are the code and data sizes for the acpica.lib 13173produced by the Microsoft Visual C++ 6.0 compiler. These values do not 13174include any ACPI driver or OSPM code. The debug version of the code 13175includes 13176the debug output trace mechanism and has a much larger code and data 13177size. 13178Note that these values will vary depending on the efficiency of the 13179compiler 13180and the compiler options used during generation. 13181 13182 Previous Release: 13183 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13184 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 13185 Current Release: 13186 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 13187 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 13188 13189 131902) iASL Compiler/Disassembler: 13191 13192Implemented an error check for illegal duplicate values in the interrupt 13193and 13194dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 13195Interrupt(). 13196 13197Implemented error checking for the Irq() and IrqNoFlags() macros to 13198detect 13199too many values in the interrupt list (16 max) and invalid values in the 13200list (range 0 - 15) 13201 13202The maximum length string literal within an ASL file is now restricted to 13203200 characters as per the ACPI specification. 13204 13205Fixed a fault when using the -ln option (generate namespace listing). 13206 13207Implemented an error check to determine if a DescriptorName within a 13208resource descriptor has already been used within the current scope. 13209 13210---------------------------------------- 1321115 August 2005. Summary of changes for version 20050815: 13212 132131) ACPI CA Core Subsystem: 13214 13215Implemented a full bytewise compare to determine if a table load request 13216is 13217attempting to load a duplicate table. The compare is performed if the 13218table 13219signatures and table lengths match. This will allow different tables with 13220the same OEM Table ID and revision to be loaded - probably against the 13221ACPI 13222specification, but discovered in the field nonetheless. 13223 13224Added the changes.txt logfile to each of the zipped release packages. 13225 13226Code and Data Size: Current and previous core subsystem library sizes are 13227shown below. These are the code and data sizes for the acpica.lib 13228produced 13229by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13230any ACPI driver or OSPM code. The debug version of the code includes the 13231debug output trace mechanism and has a much larger code and data size. 13232Note 13233that these values will vary depending on the efficiency of the compiler 13234and 13235the compiler options used during generation. 13236 13237 Previous Release: 13238 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13239 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 13240 Current Release: 13241 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13242 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 13243 13244 132452) iASL Compiler/Disassembler: 13246 13247Fixed a problem where incorrect AML code could be generated for Package 13248objects if optimization is disabled (via the -oa switch). 13249 13250Fixed a problem with where incorrect AML code is generated for variable- 13251length packages when the package length is not specified and the number 13252of 13253initializer values is greater than 255. 13254 13255 13256---------------------------------------- 1325729 July 2005. Summary of changes for version 20050729: 13258 132591) ACPI CA Core Subsystem: 13260 13261Implemented support to ignore an attempt to install/load a particular 13262ACPI 13263table more than once. Apparently there exists BIOS code that repeatedly 13264attempts to load the same SSDT upon certain events. With assistance from 13265Venkatesh Pallipadi. 13266 13267Restructured the main interface to the AML parser in order to correctly 13268handle all exceptional conditions. This will prevent leakage of the 13269OwnerId 13270resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 13271some 13272machines. With assistance from Alexey Starikovskiy. 13273 13274Support for "module level code" has been disabled in this version due to 13275a 13276number of issues that have appeared on various machines. The support can 13277be 13278enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 13279compilation. When the issues are fully resolved, the code will be enabled 13280by 13281default again. 13282 13283Modified the internal functions for debug print support to define the 13284FunctionName parameter as a (const char *) for compatibility with 13285compiler 13286built-in macros such as __FUNCTION__, etc. 13287 13288Linted the entire ACPICA source tree for both 32-bit and 64-bit. 13289 13290Implemented support to display an object count summary for the AML 13291Debugger 13292commands Object and Methods. 13293 13294Code and Data Size: Current and previous core subsystem library sizes are 13295shown below. These are the code and data sizes for the acpica.lib 13296produced 13297by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13298any ACPI driver or OSPM code. The debug version of the code includes the 13299debug output trace mechanism and has a much larger code and data size. 13300Note 13301that these values will vary depending on the efficiency of the compiler 13302and 13303the compiler options used during generation. 13304 13305 Previous Release: 13306 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13307 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13308 Current Release: 13309 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 13310 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 13311 13312 133132) iASL Compiler/Disassembler: 13314 13315Fixed a regression that appeared in the 20050708 version of the compiler 13316where an error message was inadvertently emitted for invocations of the 13317_OSI 13318reserved control method. 13319 13320---------------------------------------- 1332108 July 2005. Summary of changes for version 20050708: 13322 133231) ACPI CA Core Subsystem: 13324 13325The use of the CPU stack in the debug version of the subsystem has been 13326considerably reduced. Previously, a debug structure was declared in every 13327function that used the debug macros. This structure has been removed in 13328favor of declaring the individual elements as parameters to the debug 13329functions. This reduces the cumulative stack use during nested execution 13330of 13331ACPI function calls at the cost of a small increase in the code size of 13332the 13333debug version of the subsystem. With assistance from Alexey Starikovskiy 13334and 13335Len Brown. 13336 13337Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 13338headers to define a macro that will return the current function name at 13339runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 13340by 13341the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 13342compiler-dependent header, the function name is saved on the CPU stack 13343(one 13344pointer per function.) This mechanism is used because apparently there 13345exists no standard ANSI-C defined macro that that returns the function 13346name. 13347 13348Redesigned and reimplemented the "Owner ID" mechanism used to track 13349namespace objects created/deleted by ACPI tables and control method 13350execution. A bitmap is now used to allocate and free the IDs, thus 13351solving 13352the wraparound problem present in the previous implementation. The size 13353of 13354the namespace node descriptor was reduced by 2 bytes as a result (Alexey 13355Starikovskiy). 13356 13357Removed the UINT32_BIT and UINT16_BIT types that were used for the 13358bitfield 13359flag definitions within the headers for the predefined ACPI tables. These 13360have been replaced by UINT8_BIT in order to increase the code portability 13361of 13362the subsystem. If the use of UINT8 remains a problem, we may be forced to 13363eliminate bitfields entirely because of a lack of portability. 13364 13365Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 13366This 13367is a frequently used function and this improvement increases the 13368performance 13369of the entire subsystem (Alexey Starikovskiy). 13370 13371Fixed several possible memory leaks and the inverse - premature object 13372deletion (Alexey Starikovskiy). 13373 13374Code and Data Size: Current and previous core subsystem library sizes are 13375shown below. These are the code and data sizes for the acpica.lib 13376produced 13377by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13378any ACPI driver or OSPM code. The debug version of the code includes the 13379debug output trace mechanism and has a much larger code and data size. 13380Note 13381that these values will vary depending on the efficiency of the compiler 13382and 13383the compiler options used during generation. 13384 13385 Previous Release: 13386 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13387 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13388 Current Release: 13389 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 13390 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 13391 13392---------------------------------------- 1339324 June 2005. Summary of changes for version 20050624: 13394 133951) ACPI CA Core Subsystem: 13396 13397Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 13398the host-defined cache object. This allows the OSL implementation to 13399define 13400and type this object in any manner desired, simplifying the OSL 13401implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 13402Linux, and should be defined in the OS-specific header file for other 13403operating systems as required. 13404 13405Changed the interface to AcpiOsAcquireObject to directly return the 13406requested object as the function return (instead of ACPI_STATUS.) This 13407change was made for performance reasons, since this is the purpose of the 13408interface in the first place. AcpiOsAcquireObject is now similar to the 13409AcpiOsAllocate interface. 13410 13411Implemented a new AML debugger command named Businfo. This command 13412displays 13413information about all devices that have an associate _PRT object. The 13414_ADR, 13415_HID, _UID, and _CID are displayed for these devices. 13416 13417Modified the initialization sequence in AcpiInitializeSubsystem to call 13418the 13419OSL interface AcpiOslInitialize first, before any local initialization. 13420This 13421change was required because the global initialization now calls OSL 13422interfaces. 13423 13424Enhanced the Dump command to display the entire contents of Package 13425objects 13426(including all sub-objects and their values.) 13427 13428Restructured the code base to split some files because of size and/or 13429because the code logically belonged in a separate file. New files are 13430listed 13431below. All makefiles and project files included in the ACPI CA release 13432have 13433been updated. 13434 utilities/utcache.c /* Local cache interfaces */ 13435 utilities/utmutex.c /* Local mutex support */ 13436 utilities/utstate.c /* State object support */ 13437 interpreter/parser/psloop.c /* Main AML parse loop */ 13438 13439Code and Data Size: Current and previous core subsystem library sizes are 13440shown below. These are the code and data sizes for the acpica.lib 13441produced 13442by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13443any ACPI driver or OSPM code. The debug version of the code includes the 13444debug output trace mechanism and has a much larger code and data size. 13445Note 13446that these values will vary depending on the efficiency of the compiler 13447and 13448the compiler options used during generation. 13449 13450 Previous Release: 13451 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13452 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13453 Current Release: 13454 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 13455 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 13456 13457 134582) iASL Compiler/Disassembler: 13459 13460Fixed a regression introduced in version 20050513 where the use of a 13461Package 13462object within a Case() statement caused a compile time exception. The 13463original behavior has been restored (a Match() operator is emitted.) 13464 13465---------------------------------------- 1346617 June 2005. Summary of changes for version 20050617: 13467 134681) ACPI CA Core Subsystem: 13469 13470Moved the object cache operations into the OS interface layer (OSL) to 13471allow 13472the host OS to handle these operations if desired (for example, the Linux 13473OSL will invoke the slab allocator). This support is optional; the 13474compile 13475time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 13476cache 13477code in the ACPI CA core. The new OSL interfaces are shown below. See 13478utalloc.c for an example implementation, and acpiosxf.h for the exact 13479interface definitions. With assistance from Alexey Starikovskiy. 13480 AcpiOsCreateCache 13481 AcpiOsDeleteCache 13482 AcpiOsPurgeCache 13483 AcpiOsAcquireObject 13484 AcpiOsReleaseObject 13485 13486Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 13487return 13488and restore a flags parameter. This fits better with many OS lock models. 13489Note: the current execution state (interrupt handler or not) is no longer 13490passed to these interfaces. If necessary, the OSL must determine this 13491state 13492by itself, a simple and fast operation. With assistance from Alexey 13493Starikovskiy. 13494 13495Fixed a problem in the ACPI table handling where a valid XSDT was assumed 13496present if the revision of the RSDP was 2 or greater. According to the 13497ACPI 13498specification, the XSDT is optional in all cases, and the table manager 13499therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 13500Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 13501contain 13502only the RSDT. 13503 13504Fixed an interpreter problem with the Mid() operator in the case of an 13505input 13506string where the resulting output string is of zero length. It now 13507correctly 13508returns a valid, null terminated string object instead of a string object 13509with a null pointer. 13510 13511Fixed a problem with the control method argument handling to allow a 13512store 13513to an Arg object that already contains an object of type Device. The 13514Device 13515object is now correctly overwritten. Previously, an error was returned. 13516 13517 13518Enhanced the debugger Find command to emit object values in addition to 13519the 13520found object pathnames. The output format is the same as the dump 13521namespace 13522command. 13523 13524Enhanced the debugger Set command. It now has the ability to set the 13525value 13526of any Named integer object in the namespace (Previously, only method 13527locals 13528and args could be set.) 13529 13530Code and Data Size: Current and previous core subsystem library sizes are 13531shown below. These are the code and data sizes for the acpica.lib 13532produced 13533by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13534any ACPI driver or OSPM code. The debug version of the code includes the 13535debug output trace mechanism and has a much larger code and data size. 13536Note 13537that these values will vary depending on the efficiency of the compiler 13538and 13539the compiler options used during generation. 13540 13541 Previous Release: 13542 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13543 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13544 Current Release: 13545 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 13546 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 13547 13548 135492) iASL Compiler/Disassembler: 13550 13551Fixed a regression in the disassembler where if/else/while constructs 13552were 13553output incorrectly. This problem was introduced in the previous release 13554(20050526). This problem also affected the single-step disassembly in the 13555debugger. 13556 13557Fixed a problem where compiling the reserved _OSI method would randomly 13558(but 13559rarely) produce compile errors. 13560 13561Enhanced the disassembler to emit compilable code in the face of 13562incorrect 13563AML resource descriptors. If the optional ResourceSourceIndex is present, 13564but the ResourceSource is not, do not emit the ResourceSourceIndex in the 13565disassembly. Otherwise, the resulting code cannot be compiled without 13566errors. 13567 13568---------------------------------------- 1356926 May 2005. Summary of changes for version 20050526: 13570 135711) ACPI CA Core Subsystem: 13572 13573Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 13574the module level (not within a control method.) These opcodes are 13575executed 13576exactly once at the time the table is loaded. This type of code was legal 13577up 13578until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 13579in 13580order to provide backwards compatibility with earlier BIOS 13581implementations. 13582This eliminates the "Encountered executable code at module level" warning 13583that was previously generated upon detection of such code. 13584 13585Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 13586inadvertently be generated during the lookup of namespace objects in the 13587second pass parse of ACPI tables and control methods. It appears that 13588this 13589problem could occur during the resolution of forward references to 13590namespace 13591objects. 13592 13593Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 13594corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 13595allows the deadlock detection debug code to be compiled out in the normal 13596case, improving mutex performance (and overall subsystem performance) 13597considerably. 13598 13599Implemented a handful of miscellaneous fixes for possible memory leaks on 13600error conditions and error handling control paths. These fixes were 13601suggested by FreeBSD and the Coverity Prevent source code analysis tool. 13602 13603Added a check for a null RSDT pointer in AcpiGetFirmwareTable 13604(tbxfroot.c) 13605to prevent a fault in this error case. 13606 13607Code and Data Size: Current and previous core subsystem library sizes are 13608shown below. These are the code and data sizes for the acpica.lib 13609produced 13610by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13611any ACPI driver or OSPM code. The debug version of the code includes the 13612debug output trace mechanism and has a much larger code and data size. 13613Note 13614that these values will vary depending on the efficiency of the compiler 13615and 13616the compiler options used during generation. 13617 13618 Previous Release: 13619 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13620 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13621 Current Release: 13622 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 13623 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 13624 13625 136262) iASL Compiler/Disassembler: 13627 13628Implemented support to allow Type 1 and Type 2 ASL operators to appear at 13629the module level (not within a control method.) These operators will be 13630executed once at the time the table is loaded. This type of code was 13631legal 13632up until the release of ACPI 2.0B (2002) and is now supported by the iASL 13633compiler in order to provide backwards compatibility with earlier BIOS 13634ASL 13635code. 13636 13637The ACPI integer width (specified via the table revision ID or the -r 13638override, 32 or 64 bits) is now used internally during compile-time 13639constant 13640folding to ensure that constants are truncated to 32 bits if necessary. 13641Previously, the revision ID value was only emitted in the AML table 13642header. 13643 13644An error message is now generated for the Mutex and Method operators if 13645the 13646SyncLevel parameter is outside the legal range of 0 through 15. 13647 13648Fixed a problem with the Method operator ParameterTypes list handling 13649(ACPI 136503.0). Previously, more than 2 types or 2 arguments generated a syntax 13651error. 13652The actual underlying implementation of method argument typechecking is 13653still under development, however. 13654 13655---------------------------------------- 1365613 May 2005. Summary of changes for version 20050513: 13657 136581) ACPI CA Core Subsystem: 13659 13660Implemented support for PCI Express root bridges -- added support for 13661device 13662PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 13663 13664The interpreter now automatically truncates incoming 64-bit constants to 1366532 13666bits if currently executing out of a 32-bit ACPI table (Revision < 2). 13667This 13668also affects the iASL compiler constant folding. (Note: as per below, the 13669iASL compiler no longer allows 64-bit constants within 32-bit tables.) 13670 13671Fixed a problem where string and buffer objects with "static" pointers 13672(pointers to initialization data within an ACPI table) were not handled 13673consistently. The internal object copy operation now always copies the 13674data 13675to a newly allocated buffer, regardless of whether the source object is 13676static or not. 13677 13678Fixed a problem with the FromBCD operator where an implicit result 13679conversion was improperly performed while storing the result to the 13680target 13681operand. Since this is an "explicit conversion" operator, the implicit 13682conversion should never be performed on the output. 13683 13684Fixed a problem with the CopyObject operator where a copy to an existing 13685named object did not always completely overwrite the existing object 13686stored 13687at name. Specifically, a buffer-to-buffer copy did not delete the 13688existing 13689buffer. 13690 13691Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 13692and 13693structs for consistency. 13694 13695Code and Data Size: Current and previous core subsystem library sizes are 13696shown below. These are the code and data sizes for the acpica.lib 13697produced 13698by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13699any ACPI driver or OSPM code. The debug version of the code includes the 13700debug output trace mechanism and has a much larger code and data size. 13701Note 13702that these values will vary depending on the efficiency of the compiler 13703and 13704the compiler options used during generation. 13705 13706 Previous Release: 13707 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13708 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13709 Current Release: (Same sizes) 13710 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13711 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13712 13713 137142) iASL Compiler/Disassembler: 13715 13716The compiler now emits a warning if an attempt is made to generate a 64- 13717bit 13718integer constant from within a 32-bit ACPI table (Revision < 2). The 13719integer 13720is truncated to 32 bits. 13721 13722Fixed a problem with large package objects: if the static length of the 13723package is greater than 255, the "variable length package" opcode is 13724emitted. Previously, this caused an error. This requires an update to the 13725ACPI spec, since it currently (incorrectly) states that packages larger 13726than 13727255 elements are not allowed. 13728 13729The disassembler now correctly handles variable length packages and 13730packages 13731larger than 255 elements. 13732 13733---------------------------------------- 1373408 April 2005. Summary of changes for version 20050408: 13735 137361) ACPI CA Core Subsystem: 13737 13738Fixed three cases in the interpreter where an "index" argument to an ASL 13739function was still (internally) 32 bits instead of the required 64 bits. 13740This was the Index argument to the Index, Mid, and Match operators. 13741 13742The "strupr" function is now permanently local (AcpiUtStrupr), since this 13743is 13744not a POSIX-defined function and not present in most kernel-level C 13745libraries. All references to the C library strupr function have been 13746removed 13747from the headers. 13748 13749Completed the deployment of static functions/prototypes. All prototypes 13750with 13751the static attribute have been moved from the headers to the owning C 13752file. 13753 13754Implemented an extract option (-e) for the AcpiBin utility (AML binary 13755utility). This option allows the utility to extract individual ACPI 13756tables 13757from the output of AcpiDmp. It provides the same functionality of the 13758acpixtract.pl perl script without the worry of setting the correct perl 13759options. AcpiBin runs on Windows and has not yet been generated/validated 13760in 13761the Linux/Unix environment (but should be soon). 13762 13763Updated and fixed the table dump option for AcpiBin (-d). This option 13764converts a single ACPI table to a hex/ascii file, similar to the output 13765of 13766AcpiDmp. 13767 13768Code and Data Size: Current and previous core subsystem library sizes are 13769shown below. These are the code and data sizes for the acpica.lib 13770produced 13771by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13772any ACPI driver or OSPM code. The debug version of the code includes the 13773debug output trace mechanism and has a much larger code and data size. 13774Note 13775that these values will vary depending on the efficiency of the compiler 13776and 13777the compiler options used during generation. 13778 13779 Previous Release: 13780 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 13781 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 13782 Current Release: 13783 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 13784 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 13785 13786 137872) iASL Compiler/Disassembler: 13788 13789Disassembler fix: Added a check to ensure that the table length found in 13790the 13791ACPI table header within the input file is not longer than the actual 13792input 13793file size. This indicates some kind of file or table corruption. 13794 13795---------------------------------------- 1379629 March 2005. Summary of changes for version 20050329: 13797 137981) ACPI CA Core Subsystem: 13799 13800An error is now generated if an attempt is made to create a Buffer Field 13801of 13802length zero (A CreateField with a length operand of zero.) 13803 13804The interpreter now issues a warning whenever executable code at the 13805module 13806level is detected during ACPI table load. This will give some idea of the 13807prevalence of this type of code. 13808 13809Implemented support for references to named objects (other than control 13810methods) within package objects. 13811 13812Enhanced package object output for the debug object. Package objects are 13813now 13814completely dumped, showing all elements. 13815 13816Enhanced miscellaneous object output for the debug object. Any object can 13817now be written to the debug object (for example, a device object can be 13818written, and the type of the object will be displayed.) 13819 13820The "static" qualifier has been added to all local functions across both 13821the 13822core subsystem and the iASL compiler. 13823 13824The number of "long" lines (> 80 chars) within the source has been 13825significantly reduced, by about 1/3. 13826 13827Cleaned up all header files to ensure that all CA/iASL functions are 13828prototyped (even static functions) and the formatting is consistent. 13829 13830Two new header files have been added, acopcode.h and acnames.h. 13831 13832Removed several obsolete functions that were no longer used. 13833 13834Code and Data Size: Current and previous core subsystem library sizes are 13835shown below. These are the code and data sizes for the acpica.lib 13836produced 13837by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13838any ACPI driver or OSPM code. The debug version of the code includes the 13839debug output trace mechanism and has a much larger code and data size. 13840Note 13841that these values will vary depending on the efficiency of the compiler 13842and 13843the compiler options used during generation. 13844 13845 Previous Release: 13846 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13847 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 13848 Current Release: 13849 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 13850 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 13851 13852 13853 138542) iASL Compiler/Disassembler: 13855 13856Fixed a problem with the resource descriptor generation/support. For the 13857ResourceSourceIndex and the ResourceSource fields, both must be present, 13858or 13859both must be not present - can't have one without the other. 13860 13861The compiler now returns non-zero from the main procedure if any errors 13862have 13863occurred during the compilation. 13864 13865 13866---------------------------------------- 1386709 March 2005. Summary of changes for version 20050309: 13868 138691) ACPI CA Core Subsystem: 13870 13871The string-to-buffer implicit conversion code has been modified again 13872after 13873a change to the ACPI specification. In order to match the behavior of 13874the 13875other major ACPI implementation, the target buffer is no longer truncated 13876if 13877the source string is smaller than an existing target buffer. This change 13878requires an update to the ACPI spec, and should eliminate the recent 13879AE_AML_BUFFER_LIMIT issues. 13880 13881The "implicit return" support was rewritten to a new algorithm that 13882solves 13883the general case. Rather than attempt to determine when a method is about 13884to 13885exit, the result of every ASL operator is saved momentarily until the 13886very 13887next ASL operator is executed. Therefore, no matter how the method exits, 13888there will always be a saved implicit return value. This feature is only 13889enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 13890eliminate 13891AE_AML_NO_RETURN_VALUE errors when enabled. 13892 13893Implemented implicit conversion support for the predicate (operand) of 13894the 13895If, Else, and While operators. String and Buffer arguments are 13896automatically 13897converted to Integers. 13898 13899Changed the string-to-integer conversion behavior to match the new ACPI 13900errata: "If no integer object exists, a new integer is created. The ASCII 13901string is interpreted as a hexadecimal constant. Each string character is 13902interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 13903with the first character as the most significant digit, and ending with 13904the 13905first non-hexadecimal character or end-of-string." This means that the 13906first 13907non-hex character terminates the conversion and this is the code that was 13908changed. 13909 13910Fixed a problem where the ObjectType operator would fail (fault) when 13911used 13912on an Index of a Package which pointed to a null package element. The 13913operator now properly returns zero (Uninitialized) in this case. 13914 13915Fixed a problem where the While operator used excessive memory by not 13916properly popping the result stack during execution. There was no memory 13917leak 13918after execution, however. (Code provided by Valery Podrezov.) 13919 13920Fixed a problem where references to control methods within Package 13921objects 13922caused the method to be invoked, instead of producing a reference object 13923pointing to the method. 13924 13925Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 13926to 13927improve performance and reduce code size. (Code provided by Alexey 13928Starikovskiy.) 13929 13930Code and Data Size: Current and previous core subsystem library sizes are 13931shown below. These are the code and data sizes for the acpica.lib 13932produced 13933by the Microsoft Visual C++ 6.0 compiler, and these values do not include 13934any ACPI driver or OSPM code. The debug version of the code includes the 13935debug output trace mechanism and has a much larger code and data size. 13936Note 13937that these values will vary depending on the efficiency of the compiler 13938and 13939the compiler options used during generation. 13940 13941 Previous Release: 13942 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13943 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 13944 Current Release: 13945 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 13946 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 13947 13948 139492) iASL Compiler/Disassembler: 13950 13951Fixed a problem with the Return operator with no arguments. Since the AML 13952grammar for the byte encoding requires an operand for the Return opcode, 13953the 13954compiler now emits a Return(Zero) for this case. An ACPI specification 13955update has been written for this case. 13956 13957For tables other than the DSDT, namepath optimization is automatically 13958disabled. This is because SSDTs can be loaded anywhere in the namespace, 13959the 13960compiler has no knowledge of where, and thus cannot optimize namepaths. 13961 13962Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 13963inadvertently omitted from the ACPI specification, and will require an 13964update to the spec. 13965 13966The source file scan for ASCII characters is now optional (-a). This 13967change 13968was made because some vendors place non-ascii characters within comments. 13969However, the scan is simply a brute-force byte compare to ensure all 13970characters in the file are in the range 0x00 to 0x7F. 13971 13972Fixed a problem with the CondRefOf operator where the compiler was 13973inappropriately checking for the existence of the target. Since the point 13974of 13975the operator is to check for the existence of the target at run-time, the 13976compiler no longer checks for the target existence. 13977 13978Fixed a problem where errors generated from the internal AML interpreter 13979during constant folding were not handled properly, causing a fault. 13980 13981Fixed a problem with overly aggressive range checking for the Stall 13982operator. The valid range (max 255) is now only checked if the operand is 13983of 13984type Integer. All other operand types cannot be statically checked. 13985 13986Fixed a problem where control method references within the RefOf, 13987DeRefOf, 13988and ObjectType operators were not treated properly. They are now treated 13989as 13990actual references, not method invocations. 13991 13992Fixed and enhanced the "list namespace" option (-ln). This option was 13993broken 13994a number of releases ago. 13995 13996Improved error handling for the Field, IndexField, and BankField 13997operators. 13998The compiler now cleanly reports and recovers from errors in the field 13999component (FieldUnit) list. 14000 14001Fixed a disassembler problem where the optional ResourceDescriptor fields 14002TRS and TTP were not always handled correctly. 14003 14004Disassembler - Comments in output now use "//" instead of "/*" 14005 14006---------------------------------------- 1400728 February 2005. Summary of changes for version 20050228: 14008 140091) ACPI CA Core Subsystem: 14010 14011Fixed a problem where the result of an Index() operator (an object 14012reference) must increment the reference count on the target object for 14013the 14014life of the object reference. 14015 14016Implemented AML Interpreter and Debugger support for the new ACPI 3.0 14017Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 14018WordSpace 14019resource descriptors. 14020 14021Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 14022Space Descriptor" string, indicating interpreter support for the 14023descriptors 14024above. 14025 14026Implemented header support for the new ACPI 3.0 FADT flag bits. 14027 14028Implemented header support for the new ACPI 3.0 PCI Express bits for the 14029PM1 14030status/enable registers. 14031 14032Updated header support for the MADT processor local Apic struct and MADT 14033platform interrupt source struct for new ACPI 3.0 fields. 14034 14035Implemented header support for the SRAT and SLIT ACPI tables. 14036 14037Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 14038flag 14039at runtime. 14040 14041Code and Data Size: Current and previous core subsystem library sizes are 14042shown below. These are the code and data sizes for the acpica.lib 14043produced 14044by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14045any ACPI driver or OSPM code. The debug version of the code includes the 14046debug output trace mechanism and has a much larger code and data size. 14047Note 14048that these values will vary depending on the efficiency of the compiler 14049and 14050the compiler options used during generation. 14051 14052 Previous Release: 14053 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 14054 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 14055 Current Release: 14056 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14057 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 14058 14059 140602) iASL Compiler/Disassembler: 14061 14062Fixed a problem with the internal 64-bit String-to-integer conversion 14063with 14064strings less than two characters long. 14065 14066Fixed a problem with constant folding where the result of the Index() 14067operator can not be considered a constant. This means that Index() cannot 14068be 14069a type3 opcode and this will require an update to the ACPI specification. 14070 14071Disassembler: Implemented support for the TTP, MTP, and TRS resource 14072descriptor fields. These fields were inadvertently ignored and not output 14073in 14074the disassembly of the resource descriptor. 14075 14076 14077 ---------------------------------------- 1407811 February 2005. Summary of changes for version 20050211: 14079 140801) ACPI CA Core Subsystem: 14081 14082Implemented ACPI 3.0 support for implicit conversion within the Match() 14083operator. MatchObjects can now be of type integer, buffer, or string 14084instead 14085of just type integer. Package elements are implicitly converted to the 14086type 14087of the MatchObject. This change aligns the behavior of Match() with the 14088behavior of the other logical operators (LLess(), etc.) It also requires 14089an 14090errata change to the ACPI specification as this support was intended for 14091ACPI 3.0, but was inadvertently omitted. 14092 14093Fixed a problem with the internal implicit "to buffer" conversion. 14094Strings 14095that are converted to buffers will cause buffer truncation if the string 14096is 14097smaller than the target buffer. Integers that are converted to buffers 14098will 14099not cause buffer truncation, only zero extension (both as per the ACPI 14100spec.) The problem was introduced when code was added to truncate the 14101buffer, but this should not be performed in all cases, only the string 14102case. 14103 14104Fixed a problem with the Buffer and Package operators where the 14105interpreter 14106would get confused if two such operators were used as operands to an ASL 14107operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 14108stack was not being popped after the execution of these operators, 14109resulting 14110in an AE_NO_RETURN_VALUE exception. 14111 14112Fixed a problem with constructs of the form Store(Index(...),...). The 14113reference object returned from Index was inadvertently resolved to an 14114actual 14115value. This problem was introduced in version 20050114 when the behavior 14116of 14117Store() was modified to restrict the object types that can be used as the 14118source operand (to match the ACPI specification.) 14119 14120Reduced excessive stack use within the AcpiGetObjectInfo procedure. 14121 14122Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 14123 14124Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 14125 14126Code and Data Size: Current and previous core subsystem library sizes are 14127shown below. These are the code and data sizes for the acpica.lib 14128produced 14129by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14130any ACPI driver or OSPM code. The debug version of the code includes the 14131debug output trace mechanism and has a much larger code and data size. 14132Note 14133that these values will vary depending on the efficiency of the compiler 14134and 14135the compiler options used during generation. 14136 14137 Previous Release: 14138 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 14139 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 14140 Current Release: 14141 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 14142 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 14143 14144 141452) iASL Compiler/Disassembler: 14146 14147Fixed a code generation problem in the constant folding optimization code 14148where incorrect code was generated if a constant was reduced to a buffer 14149object (i.e., a reduced type 5 opcode.) 14150 14151Fixed a typechecking problem for the ToBuffer operator. Caused by an 14152incorrect return type in the internal opcode information table. 14153 14154---------------------------------------- 1415525 January 2005. Summary of changes for version 20050125: 14156 141571) ACPI CA Core Subsystem: 14158 14159Fixed a recently introduced problem with the Global Lock where the 14160underlying semaphore was not created. This problem was introduced in 14161version 20050114, and caused an AE_AML_NO_OPERAND exception during an 14162Acquire() operation on _GL. 14163 14164The local object cache is now optional, and is disabled by default. Both 14165AcpiExec and the iASL compiler enable the cache because they run in user 14166mode and this enhances their performance. #define 14167ACPI_ENABLE_OBJECT_CACHE 14168to enable the local cache. 14169 14170Fixed an issue in the internal function AcpiUtEvaluateObject concerning 14171the 14172optional "implicit return" support where an error was returned if no 14173return 14174object was expected, but one was implicitly returned. AE_OK is now 14175returned 14176in this case and the implicitly returned object is deleted. 14177AcpiUtEvaluateObject is only occasionally used, and only to execute 14178reserved 14179methods such as _STA and _INI where the return type is known up front. 14180 14181Fixed a few issues with the internal convert-to-integer code. It now 14182returns 14183an error if an attempt is made to convert a null string, a string of only 14184blanks/tabs, or a zero-length buffer. This affects both implicit 14185conversion 14186and explicit conversion via the ToInteger() operator. 14187 14188The internal debug code in AcpiUtAcquireMutex has been commented out. It 14189is 14190not needed for normal operation and should increase the performance of 14191the 14192entire subsystem. The code remains in case it is needed for debug 14193purposes 14194again. 14195 14196The AcpiExec source and makefile are included in the Unix/Linux package 14197for 14198the first time. 14199 14200Code and Data Size: Current and previous core subsystem library sizes are 14201shown below. These are the code and data sizes for the acpica.lib 14202produced 14203by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14204any ACPI driver or OSPM code. The debug version of the code includes the 14205debug output trace mechanism and has a much larger code and data size. 14206Note 14207that these values will vary depending on the efficiency of the compiler 14208and 14209the compiler options used during generation. 14210 14211 Previous Release: 14212 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14213 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14214 Current Release: 14215 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 14216 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 14217 142182) iASL Compiler/Disassembler: 14219 14220Switch/Case support: A warning is now issued if the type of the Switch 14221value 14222cannot be determined at compile time. For example, Switch(Arg0) will 14223generate the warning, and the type is assumed to be an integer. As per 14224the 14225ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 14226the 14227warning. 14228 14229Switch/Case support: Implemented support for buffer and string objects as 14230the switch value. This is an ACPI 3.0 feature, now that LEqual supports 14231buffers and strings. 14232 14233Switch/Case support: The emitted code for the LEqual() comparisons now 14234uses 14235the switch value as the first operand, not the second. The case value is 14236now 14237the second operand, and this allows the case value to be implicitly 14238converted to the type of the switch value, not the other way around. 14239 14240Switch/Case support: Temporary variables are now emitted immediately 14241within 14242the control method, not at the global level. This means that there are 14243now 1424436 temps available per-method, not 36 temps per-module as was the case 14245with 14246the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 14247 14248---------------------------------------- 1424914 January 2005. Summary of changes for version 20050114: 14250 14251Added 2005 copyright to all module headers. This affects every module in 14252the core subsystem, iASL compiler, and the utilities. 14253 142541) ACPI CA Core Subsystem: 14255 14256Fixed an issue with the String-to-Buffer conversion code where the string 14257null terminator was not included in the buffer after conversion, but 14258there 14259is existing ASL that assumes the string null terminator is included. This 14260is 14261the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 14262introduced in the previous version when the code was updated to correctly 14263set the converted buffer size as per the ACPI specification. The ACPI 14264spec 14265is ambiguous and will be updated to specify that the null terminator must 14266be 14267included in the converted buffer. This also affects the ToBuffer() ASL 14268operator. 14269 14270Fixed a problem with the Mid() ASL/AML operator where it did not work 14271correctly on Buffer objects. Newly created sub-buffers were not being 14272marked 14273as initialized. 14274 14275 14276Fixed a problem in AcpiTbFindTable where incorrect string compares were 14277performed on the OemId and OemTableId table header fields. These fields 14278are 14279not null terminated, so strncmp is now used instead of strcmp. 14280 14281Implemented a restriction on the Store() ASL/AML operator to align the 14282behavior with the ACPI specification. Previously, any object could be 14283used 14284as the source operand. Now, the only objects that may be used are 14285Integers, 14286Buffers, Strings, Packages, Object References, and DDB Handles. If 14287necessary, the original behavior can be restored by enabling the 14288EnableInterpreterSlack flag. 14289 14290Enhanced the optional "implicit return" support to allow an implicit 14291return 14292value from methods that are invoked externally via the AcpiEvaluateObject 14293interface. This enables implicit returns from the _STA and _INI methods, 14294for example. 14295 14296Changed the Revision() ASL/AML operator to return the current version of 14297the 14298AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 14299returned 14300the supported ACPI version (This is the function of the _REV method). 14301 14302Updated the _REV predefined method to return the currently supported 14303version 14304of ACPI, now 3. 14305 14306Implemented batch mode option for the AcpiExec utility (-b). 14307 14308Code and Data Size: Current and previous core subsystem library sizes are 14309shown below. These are the code and data sizes for the acpica.lib 14310produced 14311by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14312any ACPI driver or OSPM code. The debug version of the code includes the 14313debug output trace mechanism and has a much larger code and data size. 14314Note 14315that these values will vary depending on the efficiency of the compiler 14316and 14317the compiler options used during generation. 14318 14319 Previous Release: 14320 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14321 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14322 Current Release: 14323 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 14324 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 14325 14326---------------------------------------- 1432710 December 2004. Summary of changes for version 20041210: 14328 14329ACPI 3.0 support is nearing completion in both the iASL compiler and the 14330ACPI CA core subsystem. 14331 143321) ACPI CA Core Subsystem: 14333 14334Fixed a problem in the ToDecimalString operator where the resulting 14335string 14336length was incorrectly calculated. The length is now calculated exactly, 14337eliminating incorrect AE_STRING_LIMIT exceptions. 14338 14339Fixed a problem in the ToHexString operator to allow a maximum 200 14340character 14341string to be produced. 14342 14343Fixed a problem in the internal string-to-buffer and buffer-to-buffer 14344copy 14345routine where the length of the resulting buffer was not truncated to the 14346new size (if the target buffer already existed). 14347 14348Code and Data Size: Current and previous core subsystem library sizes are 14349shown below. These are the code and data sizes for the acpica.lib 14350produced 14351by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14352any ACPI driver or OSPM code. The debug version of the code includes the 14353debug output trace mechanism and has a much larger code and data size. 14354Note 14355that these values will vary depending on the efficiency of the compiler 14356and 14357the compiler options used during generation. 14358 14359 Previous Release: 14360 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14361 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14362 Current Release: 14363 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14364 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 14365 14366 143672) iASL Compiler/Disassembler: 14368 14369Implemented the new ACPI 3.0 resource template macros - DWordSpace, 14370ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 14371Includes support in the disassembler. 14372 14373Implemented support for the new (ACPI 3.0) parameter to the Register 14374macro, 14375AccessSize. 14376 14377Fixed a problem where the _HE resource name for the Interrupt macro was 14378referencing bit 0 instead of bit 1. 14379 14380Implemented check for maximum 255 interrupts in the Interrupt macro. 14381 14382Fixed a problem with the predefined resource descriptor names where 14383incorrect AML code was generated if the offset within the resource buffer 14384was 0 or 1. The optimizer shortened the AML code to a single byte opcode 14385but did not update the surrounding package lengths. 14386 14387Changes to the Dma macro: All channels within the channel list must be 14388in 14389the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 14390optional (default is BusMaster). 14391 14392Implemented check for maximum 7 data bytes for the VendorShort macro. 14393 14394The ReadWrite parameter is now optional for the Memory32 and similar 14395macros. 14396 14397---------------------------------------- 1439803 December 2004. Summary of changes for version 20041203: 14399 144001) ACPI CA Core Subsystem: 14401 14402The low-level field insertion/extraction code (exfldio) has been 14403completely 14404rewritten to eliminate unnecessary complexity, bugs, and boundary 14405conditions. 14406 14407Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 14408ToDecimalString 14409operators where the input operand could be inadvertently deleted if no 14410conversion was necessary (e.g., if the input to ToInteger was an Integer 14411object.) 14412 14413Fixed a problem with the ToDecimalString and ToHexString where an 14414incorrect 14415exception code was returned if the resulting string would be > 200 chars. 14416AE_STRING_LIMIT is now returned. 14417 14418Fixed a problem with the Concatenate operator where AE_OK was always 14419returned, even if the operation failed. 14420 14421Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 14422semaphores to be allocated. 14423 14424Code and Data Size: Current and previous core subsystem library sizes are 14425shown below. These are the code and data sizes for the acpica.lib 14426produced 14427by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14428any ACPI driver or OSPM code. The debug version of the code includes the 14429debug output trace mechanism and has a much larger code and data size. 14430Note 14431that these values will vary depending on the efficiency of the compiler 14432and 14433the compiler options used during generation. 14434 14435 Previous Release: 14436 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14437 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14438 Current Release: 14439 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 14440 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 14441 14442 144432) iASL Compiler/Disassembler: 14444 14445Fixed typechecking for the ObjectType and SizeOf operators. Problem was 14446recently introduced in 20041119. 14447 14448Fixed a problem with the ToUUID macro where the upper nybble of each 14449buffer 14450byte was inadvertently set to zero. 14451 14452---------------------------------------- 1445319 November 2004. Summary of changes for version 20041119: 14454 144551) ACPI CA Core Subsystem: 14456 14457Fixed a problem in the internal ConvertToInteger routine where new 14458integers 14459were not truncated to 32 bits for 32-bit ACPI tables. This routine 14460converts 14461buffers and strings to integers. 14462 14463Implemented support to store a value to an Index() on a String object. 14464This 14465is an ACPI 2.0 feature that had not yet been implemented. 14466 14467Implemented new behavior for storing objects to individual package 14468elements 14469(via the Index() operator). The previous behavior was to invoke the 14470implicit 14471conversion rules if an object was already present at the index. The new 14472behavior is to simply delete any existing object and directly store the 14473new 14474object. Although the ACPI specification seems unclear on this subject, 14475other 14476ACPI implementations behave in this manner. (This is the root of the 14477AE_BAD_HEX_CONSTANT issue.) 14478 14479Modified the RSDP memory scan mechanism to support the extended checksum 14480for 14481ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 14482RSDP signature is found with a valid checksum. 14483 14484Code and Data Size: Current and previous core subsystem library sizes are 14485shown below. These are the code and data sizes for the acpica.lib 14486produced 14487by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14488any ACPI driver or OSPM code. The debug version of the code includes the 14489debug output trace mechanism and has a much larger code and data size. 14490Note 14491that these values will vary depending on the efficiency of the compiler 14492and 14493the compiler options used during generation. 14494 14495 Previous Release: 14496 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14497 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14498 Current Release: 14499 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14500 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14501 14502 145032) iASL Compiler/Disassembler: 14504 14505Fixed a missing semicolon in the aslcompiler.y file. 14506 14507---------------------------------------- 1450805 November 2004. Summary of changes for version 20041105: 14509 145101) ACPI CA Core Subsystem: 14511 14512Implemented support for FADT revision 2. This was an interim table 14513(between 14514ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 14515 14516Implemented optional support to allow uninitialized LocalX and ArgX 14517variables in a control method. The variables are initialized to an 14518Integer 14519object with a value of zero. This support is enabled by setting the 14520AcpiGbl_EnableInterpreterSlack flag to TRUE. 14521 14522Implemented support for Integer objects for the SizeOf operator. Either 145234 14524or 8 is returned, depending on the current integer size (32-bit or 64- 14525bit, 14526depending on the parent table revision). 14527 14528Fixed a problem in the implementation of the SizeOf and ObjectType 14529operators 14530where the operand was resolved to a value too early, causing incorrect 14531return values for some objects. 14532 14533Fixed some possible memory leaks during exceptional conditions. 14534 14535Code and Data Size: Current and previous core subsystem library sizes are 14536shown below. These are the code and data sizes for the acpica.lib 14537produced 14538by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14539any ACPI driver or OSPM code. The debug version of the code includes the 14540debug output trace mechanism and has a much larger code and data size. 14541Note 14542that these values will vary depending on the efficiency of the compiler 14543and 14544the compiler options used during generation. 14545 14546 Previous Release: 14547 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14548 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14549 Current Release: 14550 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 14551 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 14552 14553 145542) iASL Compiler/Disassembler: 14555 14556Implemented support for all ACPI 3.0 reserved names and methods. 14557 14558Implemented all ACPI 3.0 grammar elements in the front-end, including 14559support for semicolons. 14560 14561Implemented the ACPI 3.0 Function() and ToUUID() macros 14562 14563Fixed a problem in the disassembler where a Scope() operator would not be 14564emitted properly if the target of the scope was in another table. 14565 14566---------------------------------------- 1456715 October 2004. Summary of changes for version 20041015: 14568 14569Note: ACPI CA is currently undergoing an in-depth and complete formal 14570evaluation to test/verify the following areas. Other suggestions are 14571welcome. This will result in an increase in the frequency of releases and 14572the number of bug fixes in the next few months. 14573 - Functional tests for all ASL/AML operators 14574 - All implicit/explicit type conversions 14575 - Bit fields and operation regions 14576 - 64-bit math support and 32-bit-only "truncated" math support 14577 - Exceptional conditions, both compiler and interpreter 14578 - Dynamic object deletion and memory leaks 14579 - ACPI 3.0 support when implemented 14580 - External interfaces to the ACPI subsystem 14581 14582 145831) ACPI CA Core Subsystem: 14584 14585Fixed two alignment issues on 64-bit platforms - within debug statements 14586in 14587AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 14588Address 14589field within the non-aligned ACPI generic address structure. 14590 14591Fixed a problem in the Increment and Decrement operators where incorrect 14592operand resolution could result in the inadvertent modification of the 14593original integer when the integer is passed into another method as an 14594argument and the arg is then incremented/decremented. 14595 14596Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 14597bit 14598BCD number were truncated during conversion. 14599 14600Fixed a problem in the ToDecimal operator where the length of the 14601resulting 14602string could be set incorrectly too long if the input operand was a 14603Buffer 14604object. 14605 14606Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 14607(0) 14608within a buffer would prematurely terminate a compare between buffer 14609objects. 14610 14611Added a check for string overflow (>200 characters as per the ACPI 14612specification) during the Concatenate operator with two string operands. 14613 14614Code and Data Size: Current and previous core subsystem library sizes are 14615shown below. These are the code and data sizes for the acpica.lib 14616produced 14617by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14618any ACPI driver or OSPM code. The debug version of the code includes the 14619debug output trace mechanism and has a much larger code and data size. 14620Note 14621that these values will vary depending on the efficiency of the compiler 14622and 14623the compiler options used during generation. 14624 14625 Previous Release: 14626 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14627 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14628 Current Release: 14629 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14630 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 14631 14632 14633 146342) iASL Compiler/Disassembler: 14635 14636Allow the use of the ObjectType operator on uninitialized Locals and Args 14637(returns 0 as per the ACPI specification). 14638 14639Fixed a problem where the compiler would fault if there was a syntax 14640error 14641in the FieldName of all of the various CreateXXXField operators. 14642 14643Disallow the use of lower case letters within the EISAID macro, as per 14644the 14645ACPI specification. All EISAID strings must be of the form "UUUNNNN" 14646Where 14647U is an uppercase letter and N is a hex digit. 14648 14649 14650---------------------------------------- 1465106 October 2004. Summary of changes for version 20041006: 14652 146531) ACPI CA Core Subsystem: 14654 14655Implemented support for the ACPI 3.0 Timer operator. This ASL function 14656implements a 64-bit timer with 100 nanosecond granularity. 14657 14658Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 14659implement the ACPI 3.0 Timer operator. This allows the host OS to 14660implement 14661the timer with the best clock available. Also, it keeps the core 14662subsystem 14663out of the clock handling business, since the host OS (usually) performs 14664this function. 14665 14666Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 14667functions use a 64-bit address which is part of the packed ACPI Generic 14668Address Structure. Since the structure is non-aligned, the alignment 14669macros 14670are now used to extract the address to a local variable before use. 14671 14672Fixed a problem where the ToInteger operator assumed all input strings 14673were 14674hexadecimal. The operator now handles both decimal strings and hex 14675strings 14676(prefixed with "0x"). 14677 14678Fixed a problem where the string length in the string object created as a 14679result of the internal ConvertToString procedure could be incorrect. This 14680potentially affected all implicit conversions and also the 14681ToDecimalString 14682and ToHexString operators. 14683 14684Fixed two problems in the ToString operator. If the length parameter was 14685zero, an incorrect string object was created and the value of the input 14686length parameter was inadvertently changed from zero to Ones. 14687 14688Fixed a problem where the optional ResourceSource string in the 14689ExtendedIRQ 14690resource macro was ignored. 14691 14692Simplified the interfaces to the internal division functions, reducing 14693code 14694size and complexity. 14695 14696Code and Data Size: Current and previous core subsystem library sizes are 14697shown below. These are the code and data sizes for the acpica.lib 14698produced 14699by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14700any ACPI driver or OSPM code. The debug version of the code includes the 14701debug output trace mechanism and has a much larger code and data size. 14702Note 14703that these values will vary depending on the efficiency of the compiler 14704and 14705the compiler options used during generation. 14706 14707 Previous Release: 14708 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14709 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14710 Current Release: 14711 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14712 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 14713 14714 147152) iASL Compiler/Disassembler: 14716 14717Implemented support for the ACPI 3.0 Timer operator. 14718 14719Fixed a problem where the Default() operator was inadvertently ignored in 14720a 14721Switch/Case block. This was a problem in the translation of the Switch 14722statement to If...Else pairs. 14723 14724Added support to allow a standalone Return operator, with no parentheses 14725(or 14726operands). 14727 14728Fixed a problem with code generation for the ElseIf operator where the 14729translated Else...If parse tree was improperly constructed leading to the 14730loss of some code. 14731 14732---------------------------------------- 1473322 September 2004. Summary of changes for version 20040922: 14734 147351) ACPI CA Core Subsystem: 14736 14737Fixed a problem with the implementation of the LNot() operator where 14738"Ones" 14739was not returned for the TRUE case. Changed the code to return Ones 14740instead 14741of (!Arg) which was usually 1. This change affects iASL constant folding 14742for 14743this operator also. 14744 14745Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 14746not 14747initialized properly -- Now zero the entire buffer in this case where the 14748buffer already exists. 14749 14750Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 14751Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 14752related code considerably. This will require changes/updates to all OS 14753interface layers (OSLs.) 14754 14755Implemented a new external interface, AcpiInstallExceptionHandler, to 14756allow 14757a system exception handler to be installed. This handler is invoked upon 14758any 14759run-time exception that occurs during control method execution. 14760 14761Added support for the DSDT in AcpiTbFindTable. This allows the 14762DataTableRegion() operator to access the local copy of the DSDT. 14763 14764Code and Data Size: Current and previous core subsystem library sizes are 14765shown below. These are the code and data sizes for the acpica.lib 14766produced 14767by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14768any ACPI driver or OSPM code. The debug version of the code includes the 14769debug output trace mechanism and has a much larger code and data size. 14770Note 14771that these values will vary depending on the efficiency of the compiler 14772and 14773the compiler options used during generation. 14774 14775 Previous Release: 14776 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 14777 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 14778 Current Release: 14779 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 14780 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 14781 14782 147832) iASL Compiler/Disassembler: 14784 14785Fixed a problem with constant folding and the LNot operator. LNot was 14786returning 1 in the TRUE case, not Ones as per the ACPI specification. 14787This 14788could result in the generation of an incorrect folded/reduced constant. 14789 14790End-Of-File is now allowed within a "//"-style comment. A parse error no 14791longer occurs if such a comment is at the very end of the input ASL 14792source 14793file. 14794 14795Implemented the "-r" option to override the Revision in the table header. 14796The initial use of this option will be to simplify the evaluation of the 14797AML 14798interpreter by allowing a single ASL source module to be compiled for 14799either 1480032-bit or 64-bit integers. 14801 14802 14803---------------------------------------- 1480427 August 2004. Summary of changes for version 20040827: 14805 148061) ACPI CA Core Subsystem: 14807 14808- Implemented support for implicit object conversion in the non-numeric 14809logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 14810and 14811LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 14812the second operand is implicitly converted on the fly to match the type 14813of 14814the first operand. For example: 14815 14816 LEqual (Source1, Source2) 14817 14818Source1 and Source2 must each evaluate to an integer, a string, or a 14819buffer. 14820The data type of Source1 dictates the required type of Source2. Source2 14821is 14822implicitly converted if necessary to match the type of Source1. 14823 14824- Updated and corrected the behavior of the string conversion support. 14825The 14826rules concerning conversion of buffers to strings (according to the ACPI 14827specification) are as follows: 14828 14829ToDecimalString - explicit byte-wise conversion of buffer to string of 14830decimal values (0-255) separated by commas. ToHexString - explicit byte- 14831wise 14832conversion of buffer to string of hex values (0-FF) separated by commas. 14833ToString - explicit byte-wise conversion of buffer to string. Byte-by- 14834byte 14835copy with no transform except NULL terminated. Any other implicit buffer- 14836to- 14837string conversion - byte-wise conversion of buffer to string of hex 14838values 14839(0-FF) separated by spaces. 14840 14841- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 14842 14843- Fixed a problem in AcpiNsGetPathnameLength where the returned length 14844was 14845one byte too short in the case of a node in the root scope. This could 14846cause a fault during debug output. 14847 14848- Code and Data Size: Current and previous core subsystem library sizes 14849are 14850shown below. These are the code and data sizes for the acpica.lib 14851produced 14852by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14853any ACPI driver or OSPM code. The debug version of the code includes the 14854debug output trace mechanism and has a much larger code and data size. 14855Note 14856that these values will vary depending on the efficiency of the compiler 14857and 14858the compiler options used during generation. 14859 14860 Previous Release: 14861 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 14862 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 14863 Current Release: 14864 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 14865 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 14866 14867 148682) iASL Compiler/Disassembler: 14869 14870- Fixed a Linux generation error. 14871 14872 14873---------------------------------------- 1487416 August 2004. Summary of changes for version 20040816: 14875 148761) ACPI CA Core Subsystem: 14877 14878Designed and implemented support within the AML interpreter for the so- 14879called "implicit return". This support returns the result of the last 14880ASL 14881operation within a control method, in the absence of an explicit Return() 14882operator. A few machines depend on this behavior, even though it is not 14883explicitly supported by the ASL language. It is optional support that 14884can 14885be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 14886 14887Removed support for the PCI_Config address space from the internal low 14888level 14889hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 14890support was not used internally, and would not work correctly anyway 14891because 14892the PCI bus number and segment number were not supported. There are 14893separate interfaces for PCI configuration space access because of the 14894unique 14895interface. 14896 14897Code and Data Size: Current and previous core subsystem library sizes are 14898shown below. These are the code and data sizes for the acpica.lib 14899produced 14900by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14901any ACPI driver or OSPM code. The debug version of the code includes the 14902debug output trace mechanism and has a much larger code and data size. 14903Note 14904that these values will vary depending on the efficiency of the compiler 14905and 14906the compiler options used during generation. 14907 14908 Previous Release: 14909 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14910 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 14911 Current Release: 14912 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 14913 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 14914 14915 149162) iASL Compiler/Disassembler: 14917 14918Fixed a problem where constants in ASL expressions at the root level (not 14919within a control method) could be inadvertently truncated during code 14920generation. This problem was introduced in the 20040715 release. 14921 14922 14923---------------------------------------- 1492415 July 2004. Summary of changes for version 20040715: 14925 149261) ACPI CA Core Subsystem: 14927 14928Restructured the internal HW GPE interfaces to pass/track the current 14929state 14930of interrupts (enabled/disabled) in order to avoid possible deadlock and 14931increase flexibility of the interfaces. 14932 14933Implemented a "lexicographical compare" for String and Buffer objects 14934within 14935the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 14936- 14937as per further clarification to the ACPI specification. Behavior is 14938similar 14939to C library "strcmp". 14940 14941Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 14942external function. In the 32-bit non-debug case, the stack use has been 14943reduced from 168 bytes to 32 bytes. 14944 14945Deployed a new run-time configuration flag, 14946AcpiGbl_EnableInterpreterSlack, 14947whose purpose is to allow the AML interpreter to forgive certain bad AML 14948constructs. Default setting is FALSE. 14949 14950Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 14951IO 14952support code. If enabled, it allows field access to go beyond the end of 14953a 14954region definition if the field is within the region length rounded up to 14955the 14956next access width boundary (a common coding error.) 14957 14958Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 14959ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 14960these 14961symbols are lowercase by the latest version of the AcpiSrc tool. 14962 14963The prototypes for the PCI interfaces in acpiosxf.h have been updated to 14964rename "Register" to simply "Reg" to prevent certain compilers from 14965complaining. 14966 14967Code and Data Size: Current and previous core subsystem library sizes are 14968shown below. These are the code and data sizes for the acpica.lib 14969produced 14970by the Microsoft Visual C++ 6.0 compiler, and these values do not include 14971any ACPI driver or OSPM code. The debug version of the code includes the 14972debug output trace mechanism and has a much larger code and data size. 14973Note 14974that these values will vary depending on the efficiency of the compiler 14975and 14976the compiler options used during generation. 14977 14978 Previous Release: 14979 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 14980 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 14981 Current Release: 14982 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 14983 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 14984 14985 149862) iASL Compiler/Disassembler: 14987 14988Implemented full support for Package objects within the Case() operator. 14989Note: The Break() operator is currently not supported within Case blocks 14990(TermLists) as there is some question about backward compatibility with 14991ACPI 149921.0 interpreters. 14993 14994 14995Fixed a problem where complex terms were not supported properly within 14996the 14997Switch() operator. 14998 14999Eliminated extraneous warning for compiler-emitted reserved names of the 15000form "_T_x". (Used in Switch/Case operators.) 15001 15002Eliminated optimization messages for "_T_x" objects and small constants 15003within the DefinitionBlock operator. 15004 15005 15006---------------------------------------- 1500715 June 2004. Summary of changes for version 20040615: 15008 150091) ACPI CA Core Subsystem: 15010 15011Implemented support for Buffer and String objects (as per ACPI 2.0) for 15012the 15013following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 15014LLessEqual. 15015 15016All directory names in the entire source package are lower case, as they 15017were in earlier releases. 15018 15019Implemented "Disassemble" command in the AML debugger that will 15020disassemble 15021a single control method. 15022 15023Code and Data Size: Current and previous core subsystem library sizes are 15024shown below. These are the code and data sizes for the acpica.lib 15025produced 15026by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15027any ACPI driver or OSPM code. The debug version of the code includes the 15028debug output trace mechanism and has a much larger code and data size. 15029Note 15030that these values will vary depending on the efficiency of the compiler 15031and 15032the compiler options used during generation. 15033 15034 Previous Release: 15035 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 15036 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 15037 15038 Current Release: 15039 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 15040 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 15041 15042 150432) iASL Compiler/Disassembler: 15044 15045Implemented support for Buffer and String objects (as per ACPI 2.0) for 15046the 15047following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 15048LLessEqual. 15049 15050All directory names in the entire source package are lower case, as they 15051were in earlier releases. 15052 15053Fixed a fault when using the -g or -d<nofilename> options if the FADT was 15054not found. 15055 15056Fixed an issue with the Windows version of the compiler where later 15057versions 15058of Windows place the FADT in the registry under the name "FADT" and not 15059"FACP" as earlier versions did. This applies when using the -g or - 15060d<nofilename> options. The compiler now looks for both strings as 15061necessary. 15062 15063Fixed a problem with compiler namepath optimization where a namepath 15064within 15065the Scope() operator could not be optimized if the namepath was a subpath 15066of 15067the current scope path. 15068 15069---------------------------------------- 1507027 May 2004. Summary of changes for version 20040527: 15071 150721) ACPI CA Core Subsystem: 15073 15074Completed a new design and implementation for EBDA (Extended BIOS Data 15075Area) 15076support in the RSDP scan code. The original code improperly scanned for 15077the 15078EBDA by simply scanning from memory location 0 to 0x400. The correct 15079method 15080is to first obtain the EBDA pointer from within the BIOS data area, then 15081scan 1K of memory starting at the EBDA pointer. There appear to be few 15082if 15083any machines that place the RSDP in the EBDA, however. 15084 15085Integrated a fix for a possible fault during evaluation of BufferField 15086arguments. Obsolete code that was causing the problem was removed. 15087 15088Found and fixed a problem in the Field Support Code where data could be 15089corrupted on a bit field read that starts on an aligned boundary but does 15090not end on an aligned boundary. Merged the read/write "datum length" 15091calculation code into a common procedure. 15092 15093Rolled in a couple of changes to the FreeBSD-specific header. 15094 15095 15096Code and Data Size: Current and previous core subsystem library sizes are 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: 77.6K Code, 11.5K Data, 89.1K Total 15109 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 15110 Current Release: 15111 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 15112 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 15113 15114 151152) iASL Compiler/Disassembler: 15116 15117Fixed a generation warning produced by some overly-verbose compilers for 15118a 1511964-bit constant. 15120 15121---------------------------------------- 1512214 May 2004. Summary of changes for version 20040514: 15123 151241) ACPI CA Core Subsystem: 15125 15126Fixed a problem where hardware GPE enable bits sometimes not set properly 15127during and after GPE method execution. Result of 04/27 changes. 15128 15129Removed extra "clear all GPEs" when sleeping/waking. 15130 15131Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 15132AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 15133to 15134the new AcpiEv* calls as appropriate. 15135 15136ACPI_OS_NAME was removed from the OS-specific headers. The default name 15137is 15138now "Microsoft Windows NT" for maximum compatibility. However this can 15139be 15140changed by modifying the acconfig.h file. 15141 15142Allow a single invocation of AcpiInstallNotifyHandler for a handler that 15143traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 15144 15145Run _INI methods on ThermalZone objects. This is against the ACPI 15146specification, but there is apparently ASL code in the field that has 15147these 15148_INI methods, and apparently "other" AML interpreters execute them. 15149 15150Performed a full 16/32/64 bit lint that resulted in some small changes. 15151 15152Added a sleep simulation command to the AML debugger to test sleep code. 15153 15154Code and Data Size: Current and previous core subsystem library sizes are 15155shown below. These are the code and data sizes for the acpica.lib 15156produced 15157by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15158any ACPI driver or OSPM code. The debug version of the code includes the 15159debug output trace mechanism and has a much larger code and data size. 15160Note 15161that these values will vary depending on the efficiency of the compiler 15162and 15163the compiler options used during generation. 15164 15165 Previous Release: 15166 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15167 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 15168 Current Release: 15169 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15170 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 15171 15172---------------------------------------- 1517327 April 2004. Summary of changes for version 20040427: 15174 151751) ACPI CA Core Subsystem: 15176 15177Completed a major overhaul of the GPE handling within ACPI CA. There are 15178now three types of GPEs: wake-only, runtime-only, and combination 15179wake/run. 15180The only GPEs allowed to be combination wake/run are for button-style 15181devices such as a control-method power button, control-method sleep 15182button, 15183or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 15184not 15185referenced by any _PRW methods are marked for "runtime" and hardware 15186enabled. Any GPE that is referenced by a _PRW method is marked for 15187"wake" 15188(and disabled at runtime). However, at sleep time, only those GPEs that 15189have been specifically enabled for wake via the AcpiEnableGpe interface 15190will 15191actually be hardware enabled. 15192 15193A new external interface has been added, AcpiSetGpeType(), that is meant 15194to 15195be used by device drivers to force a GPE to a particular type. It will 15196be 15197especially useful for the drivers for the button devices mentioned above. 15198 15199Completed restructuring of the ACPI CA initialization sequence so that 15200default operation region handlers are installed before GPEs are 15201initialized 15202and the _PRW methods are executed. This will prevent errors when the 15203_PRW 15204methods attempt to access system memory or I/O space. 15205 15206GPE enable/disable no longer reads the GPE enable register. We now keep 15207the 15208enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 15209thus no longer depend on the hardware to maintain these bits. 15210 15211Always clear the wake status and fixed/GPE status bits before sleep, even 15212for state S5. 15213 15214Improved the AML debugger output for displaying the GPE blocks and their 15215current status. 15216 15217Added new strings for the _OSI method, of the form "Windows 2001 SPx" 15218where 15219x = 0,1,2,3,4. 15220 15221Fixed a problem where the physical address was incorrectly calculated 15222when 15223the Load() operator was used to directly load from an Operation Region 15224(vs. 15225loading from a Field object.) Also added check for minimum table length 15226for 15227this case. 15228 15229Fix for multiple mutex acquisition. Restore original thread SyncLevel on 15230mutex release. 15231 15232Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 15233consistency with the other fields returned. 15234 15235Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 15236structure for each GPE in the system, so the size of this structure is 15237important. 15238 15239CPU stack requirement reduction: Cleaned up the method execution and 15240object 15241evaluation paths so that now a parameter structure is passed, instead of 15242copying the various method parameters over and over again. 15243 15244In evregion.c: Correctly exit and reenter the interpreter region if and 15245only if dispatching an operation region request to a user-installed 15246handler. 15247Do not exit/reenter when dispatching to a default handler (e.g., default 15248system memory or I/O handlers) 15249 15250 15251Notes for updating drivers for the new GPE support. The following 15252changes 15253must be made to ACPI-related device drivers that are attached to one or 15254more 15255GPEs: (This information will be added to the ACPI CA Programmer 15256Reference.) 15257 152581) AcpiInstallGpeHandler no longer automatically enables the GPE, you 15259must 15260explicitly call AcpiEnableGpe. 152612) There is a new interface called AcpiSetGpeType. This should be called 15262before enabling the GPE. Also, this interface will automatically disable 15263the GPE if it is currently enabled. 152643) AcpiEnableGpe no longer supports a GPE type flag. 15265 15266Specific drivers that must be changed: 152671) EC driver: 15268 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 15269AeGpeHandler, NULL); 15270 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 15271 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 15272 152732) Button Drivers (Power, Lid, Sleep): 15274Run _PRW method under parent device 15275If _PRW exists: /* This is a control-method button */ 15276 Extract GPE number and possibly GpeDevice 15277 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 15278 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 15279 15280For all other devices that have _PRWs, we automatically set the GPE type 15281to 15282ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 15283This 15284must be done on a selective basis, usually requiring some kind of user 15285app 15286to allow the user to pick the wake devices. 15287 15288 15289Code and Data Size: Current and previous core subsystem library sizes are 15290shown below. These are the code and data sizes for the acpica.lib 15291produced 15292by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15293any ACPI driver or OSPM code. The debug version of the code includes the 15294debug output trace mechanism and has a much larger code and data size. 15295Note 15296that these values will vary depending on the efficiency of the compiler 15297and 15298the compiler options used during generation. 15299 15300 Previous Release: 15301 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15302 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15303 Current Release: 15304 15305 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 15306 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 15307 15308 15309 15310---------------------------------------- 1531102 April 2004. Summary of changes for version 20040402: 15312 153131) ACPI CA Core Subsystem: 15314 15315Fixed an interpreter problem where an indirect store through an ArgX 15316parameter was incorrectly applying the "implicit conversion rules" during 15317the store. From the ACPI specification: "If the target is a method local 15318or 15319argument (LocalX or ArgX), no conversion is performed and the result is 15320stored directly to the target". The new behavior is to disable implicit 15321conversion during ALL stores to an ArgX. 15322 15323Changed the behavior of the _PRW method scan to ignore any and all errors 15324returned by a given _PRW. This prevents the scan from aborting from the 15325failure of any single _PRW. 15326 15327Moved the runtime configuration parameters from the global init procedure 15328to 15329static variables in acglobal.h. This will allow the host to override the 15330default values easily. 15331 15332Code and Data Size: Current and previous core subsystem library sizes are 15333shown below. These are the code and data sizes for the acpica.lib 15334produced 15335by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15336any ACPI driver or OSPM code. The debug version of the code includes the 15337debug output trace mechanism and has a much larger code and data size. 15338Note 15339that these values will vary depending on the efficiency of the compiler 15340and 15341the compiler options used during generation. 15342 15343 Previous Release: 15344 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15345 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15346 Current Release: 15347 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 15348 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 15349 15350 153512) iASL Compiler/Disassembler: 15352 15353iASL now fully disassembles SSDTs. However, External() statements are 15354not 15355generated automatically for unresolved symbols at this time. This is a 15356planned feature for future implementation. 15357 15358Fixed a scoping problem in the disassembler that occurs when the type of 15359the 15360target of a Scope() operator is overridden. This problem caused an 15361incorrectly nested internal namespace to be constructed. 15362 15363Any warnings or errors that are emitted during disassembly are now 15364commented 15365out automatically so that the resulting file can be recompiled without 15366any 15367hand editing. 15368 15369---------------------------------------- 1537026 March 2004. Summary of changes for version 20040326: 15371 153721) ACPI CA Core Subsystem: 15373 15374Implemented support for "wake" GPEs via interaction between GPEs and the 15375_PRW methods. Every GPE that is pointed to by one or more _PRWs is 15376identified as a WAKE GPE and by default will no longer be enabled at 15377runtime. Previously, we were blindly enabling all GPEs with a 15378corresponding 15379_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 15380We 15381believe this has been the cause of thousands of "spurious" GPEs on some 15382systems. 15383 15384This new GPE behavior is can be reverted to the original behavior (enable 15385ALL GPEs at runtime) via a runtime flag. 15386 15387Fixed a problem where aliased control methods could not access objects 15388properly. The proper scope within the namespace was not initialized 15389(transferred to the target of the aliased method) before executing the 15390target method. 15391 15392Fixed a potential race condition on internal object deletion on the 15393return 15394object in AcpiEvaluateObject. 15395 15396Integrated a fix for resource descriptors where both _MEM and _MTP were 15397being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 15398wide, 0x0F instead of 0x03.) 15399 15400Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 15401preventing 15402a 15403fault in some cases. 15404 15405Updated Notify() values for debug statements in evmisc.c 15406 15407Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 15408 15409Code and Data Size: Current and previous core subsystem library sizes are 15410shown below. These are the code and data sizes for the acpica.lib 15411produced 15412by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15413any ACPI driver or OSPM code. The debug version of the code includes the 15414debug output trace mechanism and has a much larger code and data size. 15415Note 15416that these values will vary depending on the efficiency of the compiler 15417and 15418the compiler options used during generation. 15419 15420 Previous Release: 15421 15422 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15423 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15424 Current Release: 15425 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 15426 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 15427 15428---------------------------------------- 1542911 March 2004. Summary of changes for version 20040311: 15430 154311) ACPI CA Core Subsystem: 15432 15433Fixed a problem where errors occurring during the parse phase of control 15434method execution did not abort cleanly. For example, objects created and 15435installed in the namespace were not deleted. This caused all subsequent 15436invocations of the method to return the AE_ALREADY_EXISTS exception. 15437 15438Implemented a mechanism to force a control method to "Serialized" 15439execution 15440if the method attempts to create namespace objects. (The root of the 15441AE_ALREADY_EXISTS problem.) 15442 15443Implemented support for the predefined _OSI "internal" control method. 15444Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 15445and 15446"Windows 2001.1", and can be easily upgraded for new strings as 15447necessary. 15448This feature will allow "other" operating systems to execute the fully 15449tested, "Windows" code path through the ASL code 15450 15451Global Lock Support: Now allows multiple acquires and releases with any 15452internal thread. Removed concept of "owning thread" for this special 15453mutex. 15454 15455Fixed two functions that were inappropriately declaring large objects on 15456the 15457CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 15458during 15459method execution considerably. 15460 15461Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 15462S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 15463 15464Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 15465defined on the machine. 15466 15467Implemented two runtime options: One to force all control method 15468execution 15469to "Serialized" to mimic Windows behavior, another to disable _OSI 15470support 15471if it causes problems on a given machine. 15472 15473Code and Data Size: Current and previous core subsystem library sizes are 15474shown below. These are the code and data sizes for the acpica.lib 15475produced 15476by the Microsoft Visual C++ 6.0 compiler, and these values do not include 15477any ACPI driver or OSPM code. The debug version of the code includes the 15478debug output trace mechanism and has a much larger code and data size. 15479Note 15480that these values will vary depending on the efficiency of the compiler 15481and 15482the compiler options used during generation. 15483 15484 Previous Release: 15485 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15486 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15487 Current Release: 15488 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 15489 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 15490 154912) iASL Compiler/Disassembler: 15492 15493Fixed an array size problem for FreeBSD that would cause the compiler to 15494fault. 15495 15496---------------------------------------- 1549720 February 2004. Summary of changes for version 20040220: 15498 15499 155001) ACPI CA Core Subsystem: 15501 15502Implemented execution of _SxD methods for Device objects in the 15503GetObjectInfo interface. 15504 15505Fixed calls to _SST method to pass the correct arguments. 15506 15507Added a call to _SST on wake to restore to "working" state. 15508 15509Check for End-Of-Buffer failure case in the WalkResources interface. 15510 15511Integrated fix for 64-bit alignment issue in acglobal.h by moving two 15512structures to the beginning of the file. 15513 15514After wake, clear GPE status register(s) before enabling GPEs. 15515 15516After wake, clear/enable power button. (Perhaps we should clear/enable 15517all 15518fixed events upon wake.) 15519 15520Fixed a couple of possible memory leaks in the Namespace manager. 15521 15522Integrated latest acnetbsd.h file. 15523 15524---------------------------------------- 1552511 February 2004. Summary of changes for version 20040211: 15526 15527 155281) ACPI CA Core Subsystem: 15529 15530Completed investigation and implementation of the call-by-reference 15531mechanism for control method arguments. 15532 15533Fixed a problem where a store of an object into an indexed package could 15534fail if the store occurs within a different method than the method that 15535created the package. 15536 15537Fixed a problem where the ToDecimal operator could return incorrect 15538results. 15539 15540Fixed a problem where the CopyObject operator could fail on some of the 15541more 15542obscure objects (e.g., Reference objects.) 15543 15544Improved the output of the Debug object to display buffer, package, and 15545index objects. 15546 15547Fixed a problem where constructs of the form "RefOf (ArgX)" did not 15548return 15549the expected result. 15550 15551Added permanent ACPI_REPORT_ERROR macros for all instances of the 15552ACPI_AML_INTERNAL exception. 15553 15554Integrated latest version of acfreebsd.h 15555 15556---------------------------------------- 1555716 January 2004. Summary of changes for version 20040116: 15558 15559The purpose of this release is primarily to update the copyright years in 15560each module, thus causing a huge number of diffs. There are a few small 15561functional changes, however. 15562 155631) ACPI CA Core Subsystem: 15564 15565Improved error messages when there is a problem finding one or more of 15566the 15567required base ACPI tables 15568 15569Reintroduced the definition of APIC_HEADER in actbl.h 15570 15571Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 15572 15573Removed extraneous reference to NewObj in dsmthdat.c 15574 155752) iASL compiler 15576 15577Fixed a problem introduced in December that disabled the correct 15578disassembly 15579of Resource Templates 15580 15581 15582---------------------------------------- 1558303 December 2003. Summary of changes for version 20031203: 15584 155851) ACPI CA Core Subsystem: 15586 15587Changed the initialization of Operation Regions during subsystem 15588init to perform two entire walks of the ACPI namespace; The first 15589to initialize the regions themselves, the second to execute the 15590_REG methods. This fixed some interdependencies across _REG 15591methods found on some machines. 15592 15593Fixed a problem where a Store(Local0, Local1) could simply update 15594the object reference count, and not create a new copy of the 15595object if the Local1 is uninitialized. 15596 15597Implemented support for the _SST reserved method during sleep 15598transitions. 15599 15600Implemented support to clear the SLP_TYP and SLP_EN bits when 15601waking up, this is apparently required by some machines. 15602 15603When sleeping, clear the wake status only if SleepState is not S5. 15604 15605Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 15606pointer arithmetic advanced a string pointer too far. 15607 15608Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 15609could be returned if the requested table has not been loaded. 15610 15611Within the support for IRQ resources, restructured the handling of 15612the active and edge/level bits. 15613 15614Fixed a few problems in AcpiPsxExecute() where memory could be 15615leaked under certain error conditions. 15616 15617Improved error messages for the cases where the ACPI mode could 15618not be entered. 15619 15620Code and Data Size: Current and previous core subsystem library 15621sizes are shown below. These are the code and data sizes for the 15622acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15623these values do not include any ACPI driver or OSPM code. The 15624debug version of the code includes the debug output trace 15625mechanism and has a much larger code and data size. Note that 15626these values will vary depending on the efficiency of the compiler 15627and the compiler options used during generation. 15628 15629 Previous Release (20031029): 15630 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15631 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15632 Current Release: 15633 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 15634 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 15635 156362) iASL Compiler/Disassembler: 15637 15638Implemented a fix for the iASL disassembler where a bad index was 15639generated. This was most noticeable on 64-bit platforms 15640 15641 15642---------------------------------------- 1564329 October 2003. Summary of changes for version 20031029: 15644 156451) ACPI CA Core Subsystem: 15646 15647 15648Fixed a problem where a level-triggered GPE with an associated 15649_Lxx control method was incorrectly cleared twice. 15650 15651Fixed a problem with the Field support code where an access can 15652occur beyond the end-of-region if the field is non-aligned but 15653extends to the very end of the parent region (resulted in an 15654AE_AML_REGION_LIMIT exception.) 15655 15656Fixed a problem with ACPI Fixed Events where an RT Clock handler 15657would not get invoked on an RTC event. The RTC event bitmasks for 15658the PM1 registers were not being initialized properly. 15659 15660Implemented support for executing _STA and _INI methods for 15661Processor objects. Although this is currently not part of the 15662ACPI specification, there is existing ASL code that depends on the 15663init-time execution of these methods. 15664 15665Implemented and deployed a GetDescriptorName function to decode 15666the various types of internal descriptors. Guards against null 15667descriptors during debug output also. 15668 15669Implemented and deployed a GetNodeName function to extract the 4- 15670character namespace node name. This function simplifies the debug 15671and error output, as well as guarding against null pointers during 15672output. 15673 15674Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 15675simplify the debug and error output of 64-bit integers. This 15676macro replaces the HIDWORD and LODWORD macros for dumping these 15677integers. 15678 15679Updated the implementation of the Stall() operator to only call 15680AcpiOsStall(), and also return an error if the operand is larger 15681than 255. This preserves the required behavior of not 15682relinquishing the processor, as would happen if AcpiOsSleep() was 15683called for "long stalls". 15684 15685Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 15686initialized are now treated as NOOPs. 15687 15688Cleaned up a handful of warnings during 64-bit generation. 15689 15690Fixed a reported error where and incorrect GPE number was passed 15691to the GPE dispatch handler. This value is only used for error 15692output, however. Used this opportunity to clean up and streamline 15693the GPE dispatch code. 15694 15695Code and Data Size: Current and previous core subsystem library 15696sizes are shown below. These are the code and data sizes for the 15697acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15698these values do not include any ACPI driver or OSPM code. The 15699 15700debug version of the code includes the debug output trace 15701mechanism and has a much larger code and data size. Note that 15702these values will vary depending on the efficiency of the compiler 15703and the compiler options used during generation. 15704 15705 Previous Release (20031002): 15706 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15707 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15708 Current Release: 15709 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 15710 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 15711 15712 157132) iASL Compiler/Disassembler: 15714 15715Updated the iASL compiler to return an error if the operand to the 15716Stall() operator is larger than 255. 15717 15718 15719---------------------------------------- 1572002 October 2003. Summary of changes for version 20031002: 15721 15722 157231) ACPI CA Core Subsystem: 15724 15725Fixed a problem with Index Fields where the index was not 15726incremented for fields that require multiple writes to the 15727index/data registers (Fields that are wider than the data 15728register.) 15729 15730Fixed a problem with all Field objects where a write could go 15731beyond the end-of-field if the field was larger than the access 15732granularity and therefore required multiple writes to complete the 15733request. An extra write beyond the end of the field could happen 15734inadvertently. 15735 15736Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 15737would incorrectly be returned if the width of the Data Register 15738was larger than the specified field access width. 15739 15740Completed fixes for LoadTable() and Unload() and verified their 15741operation. Implemented full support for the "DdbHandle" object 15742throughout the ACPI CA subsystem. 15743 15744Implemented full support for the MADT and ECDT tables in the ACPI 15745CA header files. Even though these tables are not directly 15746consumed by ACPI CA, the header definitions are useful for ACPI 15747device drivers. 15748 15749Integrated resource descriptor fixes posted to the Linux ACPI 15750list. This included checks for minimum descriptor length, and 15751support for trailing NULL strings within descriptors that have 15752optional string elements. 15753 15754Code and Data Size: Current and previous core subsystem library 15755sizes are shown below. These are the code and data sizes for the 15756acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15757these values do not include any ACPI driver or OSPM code. The 15758debug version of the code includes the debug output trace 15759mechanism and has a much larger code and data size. Note that 15760these values will vary depending on the efficiency of the compiler 15761and the compiler options used during generation. 15762 15763 Previous Release (20030918): 15764 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 15765 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 15766 Current Release: 15767 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 15768 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 15769 15770 157712) iASL Compiler: 15772 15773Implemented detection of non-ASCII characters within the input 15774source ASL file. This catches attempts to compile binary (AML) 15775files early in the compile, with an informative error message. 15776 15777Fixed a problem where the disassembler would fault if the output 15778filename could not be generated or if the output file could not be 15779opened. 15780 15781---------------------------------------- 1578218 September 2003. Summary of changes for version 20030918: 15783 15784 157851) ACPI CA Core Subsystem: 15786 15787Found and fixed a longstanding problem with the late execution of 15788the various deferred AML opcodes (such as Operation Regions, 15789Buffer Fields, Buffers, and Packages). If the name string 15790specified for the name of the new object placed the object in a 15791scope other than the current scope, the initialization/execution 15792of the opcode failed. The solution to this problem was to 15793implement a mechanism where the late execution of such opcodes 15794does not attempt to lookup/create the name a second time in an 15795incorrect scope. This fixes the "region size computed 15796incorrectly" problem. 15797 15798Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 15799Global Lock AE_BAD_PARAMETER error. 15800 15801Fixed several 64-bit issues with prototypes, casting and data 15802types. 15803 15804Removed duplicate prototype from acdisasm.h 15805 15806Fixed an issue involving EC Operation Region Detach (Shaohua Li) 15807 15808Code and Data Size: Current and previous core subsystem library 15809sizes are shown below. These are the code and data sizes for the 15810acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15811these values do not include any ACPI driver or OSPM code. The 15812debug version of the code includes the debug output trace 15813mechanism and has a much larger code and data size. Note that 15814these values will vary depending on the efficiency of the compiler 15815and the compiler options used during generation. 15816 15817 Previous Release: 15818 15819 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 15820 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 15821 Current Release: 15822 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 15823 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 15824 15825 158262) Linux: 15827 15828Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 15829correct sleep time in seconds. 15830 15831---------------------------------------- 1583214 July 2003. Summary of changes for version 20030619: 15833 158341) ACPI CA Core Subsystem: 15835 15836Parse SSDTs in order discovered, as opposed to reverse order 15837(Hrvoje Habjanic) 15838 15839Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 15840Klausner, 15841 Nate Lawson) 15842 15843 158442) Linux: 15845 15846Dynamically allocate SDT list (suggested by Andi Kleen) 15847 15848proc function return value cleanups (Andi Kleen) 15849 15850Correctly handle NMI watchdog during long stalls (Andrew Morton) 15851 15852Make it so acpismp=force works (reported by Andrew Morton) 15853 15854 15855---------------------------------------- 1585619 June 2003. Summary of changes for version 20030619: 15857 158581) ACPI CA Core Subsystem: 15859 15860Fix To/FromBCD, eliminating the need for an arch-specific #define. 15861 15862Do not acquire a semaphore in the S5 shutdown path. 15863 15864Fix ex_digits_needed for 0. (Takayoshi Kochi) 15865 15866Fix sleep/stall code reversal. (Andi Kleen) 15867 15868Revert a change having to do with control method calling 15869semantics. 15870 158712) Linux: 15872 15873acpiphp update (Takayoshi Kochi) 15874 15875Export acpi_disabled for sonypi (Stelian Pop) 15876 15877Mention acpismp=force in config help 15878 15879Re-add acpitable.c and acpismp=force. This improves backwards 15880 15881compatibility and also cleans up the code to a significant degree. 15882 15883Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 15884 15885---------------------------------------- 1588622 May 2003. Summary of changes for version 20030522: 15887 158881) ACPI CA Core Subsystem: 15889 15890Found and fixed a reported problem where an AE_NOT_FOUND error 15891occurred occasionally during _BST evaluation. This turned out to 15892be an Owner ID allocation issue where a called method did not get 15893a new ID assigned to it. Eventually, (after 64k calls), the Owner 15894ID UINT16 would wraparound so that the ID would be the same as the 15895caller's and the called method would delete the caller's 15896namespace. 15897 15898Implemented extended error reporting for control methods that are 15899aborted due to a run-time exception. Output includes the exact 15900AML instruction that caused the method abort, a dump of the method 15901locals and arguments at the time of the abort, and a trace of all 15902nested control method calls. 15903 15904Modified the interpreter to allow the creation of buffers of zero 15905length from the AML code. Implemented new code to ensure that no 15906attempt is made to actually allocate a memory buffer (of length 15907zero) - instead, a simple buffer object with a NULL buffer pointer 15908and length zero is created. A warning is no longer issued when 15909the AML attempts to create a zero-length buffer. 15910 15911Implemented a workaround for the "leading asterisk issue" in 15912_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 15913asterisk is automatically removed if present in any HID, UID, or 15914CID strings. The iASL compiler will still flag this asterisk as 15915an error, however. 15916 15917Implemented full support for _CID methods that return a package of 15918multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 15919now additionally returns a device _CID list if present. This 15920required a change to the external interface in order to pass an 15921ACPI_BUFFER object as a parameter since the _CID list is of 15922variable length. 15923 15924Fixed a problem with the new AE_SAME_HANDLER exception where 15925handler initialization code did not know about this exception. 15926 15927Code and Data Size: Current and previous core subsystem library 15928sizes are shown below. These are the code and data sizes for the 15929acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 15930these values do not include any ACPI driver or OSPM code. The 15931debug version of the code includes the debug output trace 15932mechanism and has a much larger code and data size. Note that 15933these values will vary depending on the efficiency of the compiler 15934and the compiler options used during generation. 15935 15936 Previous Release (20030509): 15937 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 15938 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 15939 Current Release: 15940 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 15941 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 15942 15943 159442) Linux: 15945 15946Fixed a bug in which we would reinitialize the ACPI interrupt 15947after it was already working, thus disabling all ACPI and the IRQs 15948for any other device sharing the interrupt. (Thanks to Stian 15949Jordet) 15950 15951Toshiba driver update (John Belmonte) 15952 15953Return only 0 or 1 for our interrupt handler status (Andrew 15954Morton) 15955 15956 159573) iASL Compiler: 15958 15959Fixed a reported problem where multiple (nested) ElseIf() 15960statements were not handled correctly by the compiler, resulting 15961in incorrect warnings and incorrect AML code. This was a problem 15962in both the ASL parser and the code generator. 15963 15964 159654) Documentation: 15966 15967Added changes to existing interfaces, new exception codes, and new 15968text concerning reference count object management versus garbage 15969collection. 15970 15971---------------------------------------- 1597209 May 2003. Summary of changes for version 20030509. 15973 15974 159751) ACPI CA Core Subsystem: 15976 15977Changed the subsystem initialization sequence to hold off 15978installation of address space handlers until the hardware has been 15979initialized and the system has entered ACPI mode. This is because 15980the installation of space handlers can cause _REG methods to be 15981run. Previously, the _REG methods could potentially be run before 15982ACPI mode was enabled. 15983 15984Fixed some memory leak issues related to address space handler and 15985notify handler installation. There were some problems with the 15986reference count mechanism caused by the fact that the handler 15987objects are shared across several namespace objects. 15988 15989Fixed a reported problem where reference counts within the 15990namespace were not properly updated when named objects created by 15991method execution were deleted. 15992 15993Fixed a reported problem where multiple SSDTs caused a deletion 15994issue during subsystem termination. Restructured the table data 15995structures to simplify the linked lists and the related code. 15996 15997Fixed a problem where the table ID associated with secondary 15998tables (SSDTs) was not being propagated into the namespace objects 15999created by those tables. This would only present a problem for 16000tables that are unloaded at run-time, however. 16001 16002Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 16003type as the length parameter (instead of UINT32). 16004 16005Solved a long-standing problem where an ALREADY_EXISTS error 16006appears on various systems. This problem could happen when there 16007are multiple PCI_Config operation regions under a single PCI root 16008bus. This doesn't happen very frequently, but there are some 16009systems that do this in the ASL. 16010 16011Fixed a reported problem where the internal DeleteNode function 16012was incorrectly handling the case where a namespace node was the 16013first in the parent's child list, and had additional peers (not 16014the only child, but first in the list of children.) 16015 16016Code and Data Size: Current core subsystem library sizes are shown 16017below. These are the code and data sizes for the acpica.lib 16018produced by the Microsoft Visual C++ 6.0 compiler, and these 16019values do not include any ACPI driver or OSPM code. The debug 16020version of the code includes the debug output trace mechanism and 16021has a much larger code and data size. Note that these values will 16022vary depending on the efficiency of the compiler and the compiler 16023options used during generation. 16024 16025 Previous Release 16026 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 16027 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 16028 Current Release: 16029 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 16030 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 16031 16032 160332) Linux: 16034 16035Allow ":" in OS override string (Ducrot Bruno) 16036 16037Kobject fix (Greg KH) 16038 16039 160403 iASL Compiler/Disassembler: 16041 16042Fixed a problem in the generation of the C source code files (AML 16043is emitted in C source statements for BIOS inclusion) where the 16044Ascii dump that appears within a C comment at the end of each line 16045could cause a compile time error if the AML sequence happens to 16046have an open comment or close comment sequence embedded. 16047 16048 16049---------------------------------------- 1605024 April 2003. Summary of changes for version 20030424. 16051 16052 160531) ACPI CA Core Subsystem: 16054 16055Support for big-endian systems has been implemented. Most of the 16056support has been invisibly added behind big-endian versions of the 16057ACPI_MOVE_* macros. 16058 16059Fixed a problem in AcpiHwDisableGpeBlock() and 16060AcpiHwClearGpeBlock() where an incorrect offset was passed to the 16061low level hardware write routine. The offset parameter was 16062actually eliminated from the low level read/write routines because 16063they had become obsolete. 16064 16065Fixed a problem where a handler object was deleted twice during 16066the removal of a fixed event handler. 16067 16068 160692) Linux: 16070 16071A fix for SMP systems with link devices was contributed by 16072 16073Compaq's Dan Zink. 16074 16075(2.5) Return whether we handled the interrupt in our IRQ handler. 16076(Linux ISRs no longer return void, so we can propagate the handler 16077return value from the ACPI CA core back to the OS.) 16078 16079 16080 160813) Documentation: 16082 16083The ACPI CA Programmer Reference has been updated to reflect new 16084interfaces and changes to existing interfaces. 16085 16086---------------------------------------- 1608728 March 2003. Summary of changes for version 20030328. 16088 160891) ACPI CA Core Subsystem: 16090 16091The GPE Block Device support has been completed. New interfaces 16092are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 16093interfaces (enable, disable, clear, getstatus) have been split 16094into separate interfaces for Fixed Events and General Purpose 16095Events (GPEs) in order to support GPE Block Devices properly. 16096 16097Fixed a problem where the error message "Failed to acquire 16098semaphore" would appear during operations on the embedded 16099controller (EC). 16100 16101Code and Data Size: Current core subsystem library sizes are shown 16102below. These are the code and data sizes for the acpica.lib 16103produced by the Microsoft Visual C++ 6.0 compiler, and these 16104values do not include any ACPI driver or OSPM code. The debug 16105version of the code includes the debug output trace mechanism and 16106has a much larger code and data size. Note that these values will 16107vary depending on the efficiency of the compiler and the compiler 16108options used during generation. 16109 16110 Previous Release 16111 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 16112 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 16113 Current Release: 16114 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 16115 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 16116 16117 16118---------------------------------------- 1611928 February 2003. Summary of changes for version 20030228. 16120 16121 161221) ACPI CA Core Subsystem: 16123 16124The GPE handling and dispatch code has been completely overhauled 16125in preparation for support of GPE Block Devices (ID ACPI0006). 16126This affects internal data structures and code only; there should 16127be no differences visible externally. One new file has been 16128added, evgpeblk.c 16129 16130The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 16131fields that are used to determine the GPE block lengths. The 16132REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 16133structures are ignored. This is per the ACPI specification but it 16134isn't very clear. The full 256 Block 0/1 GPEs are now supported 16135(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 16136 16137In the SCI interrupt handler, removed the read of the PM1_CONTROL 16138register to look at the SCI_EN bit. On some machines, this read 16139causes an SMI event and greatly slows down SCI events. (This may 16140in fact be the cause of slow battery status response on some 16141systems.) 16142 16143Fixed a problem where a store of a NULL string to a package object 16144could cause the premature deletion of the object. This was seen 16145during execution of the battery _BIF method on some systems, 16146resulting in no battery data being returned. 16147 16148Added AcpiWalkResources interface to simplify parsing of resource 16149lists. 16150 16151Code and Data Size: Current core subsystem library sizes are shown 16152below. These are the code and data sizes for the acpica.lib 16153produced by the Microsoft Visual C++ 6.0 compiler, and these 16154values do not include any ACPI driver or OSPM code. The debug 16155version of the code includes the debug output trace mechanism and 16156has a much larger code and data size. Note that these values will 16157vary depending on the efficiency of the compiler and the compiler 16158options used during generation. 16159 16160 Previous Release 16161 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16162 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16163 Current Release: 16164 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 16165 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 16166 16167 161682) Linux 16169 16170S3 fixes (Ole Rohne) 16171 16172Update ACPI PHP driver with to use new acpi_walk_resource API 16173(Bjorn Helgaas) 16174 16175Add S4BIOS support (Pavel Machek) 16176 16177Map in entire table before performing checksum (John Stultz) 16178 16179Expand the mem= cmdline to allow the specification of reserved and 16180ACPI DATA blocks (Pavel Machek) 16181 16182Never use ACPI on VISWS 16183 16184Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 16185 16186Revert a change that allowed P_BLK lengths to be 4 or 5. This is 16187causing us to think that some systems support C2 when they really 16188don't. 16189 16190Do not count processor objects for non-present CPUs (Thanks to 16191Dominik Brodowski) 16192 16193 161943) iASL Compiler: 16195 16196Fixed a problem where ASL include files could not be found and 16197opened. 16198 16199Added support for the _PDC reserved name. 16200 16201 16202---------------------------------------- 1620322 January 2003. Summary of changes for version 20030122. 16204 16205 162061) ACPI CA Core Subsystem: 16207 16208Added a check for constructs of the form: Store (Local0, Local0) 16209where Local0 is not initialized. Apparently, some BIOS 16210programmers believe that this is a NOOP. Since this store doesn't 16211do anything anyway, the new prototype behavior will ignore this 16212error. This is a case where we can relax the strict checking in 16213the interpreter in the name of compatibility. 16214 16215 162162) Linux 16217 16218The AcpiSrc Source Conversion Utility has been released with the 16219Linux package for the first time. This is the utility that is 16220used to convert the ACPI CA base source code to the Linux version. 16221 16222(Both) Handle P_BLK lengths shorter than 6 more gracefully 16223 16224(Both) Move more headers to include/acpi, and delete an unused 16225header. 16226 16227(Both) Move drivers/acpi/include directory to include/acpi 16228 16229(Both) Boot functions don't use cmdline, so don't pass it around 16230 16231(Both) Remove include of unused header (Adrian Bunk) 16232 16233(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 16234the 16235former now also includes the latter, acpiphp.h only needs the one, 16236now. 16237 16238(2.5) Make it possible to select method of bios restoring after S3 16239resume. [=> no more ugly ifdefs] (Pavel Machek) 16240 16241(2.5) Make proc write interfaces work (Pavel Machek) 16242 16243(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 16244 16245(2.5) Break out ACPI Perf code into its own module, under cpufreq 16246(Dominik Brodowski) 16247 16248(2.4) S4BIOS support (Ducrot Bruno) 16249 16250(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 16251Visinoni) 16252 16253 162543) iASL Compiler: 16255 16256Added support to disassemble SSDT and PSDTs. 16257 16258Implemented support to obtain SSDTs from the Windows registry if 16259available. 16260 16261 16262---------------------------------------- 1626309 January 2003. Summary of changes for version 20030109. 16264 162651) ACPI CA Core Subsystem: 16266 16267Changed the behavior of the internal Buffer-to-String conversion 16268function. The current ACPI specification states that the contents 16269of the buffer are "converted to a string of two-character 16270hexadecimal numbers, each separated by a space". Unfortunately, 16271this definition is not backwards compatible with existing ACPI 1.0 16272implementations (although the behavior was not defined in the ACPI 162731.0 specification). The new behavior simply copies data from the 16274buffer to the string until a null character is found or the end of 16275the buffer is reached. The new String object is always null 16276terminated. This problem was seen during the generation of _BIF 16277battery data where incorrect strings were returned for battery 16278type, etc. This will also require an errata to the ACPI 16279specification. 16280 16281Renamed all instances of NATIVE_UINT and NATIVE_INT to 16282ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 16283 16284Copyright in all module headers (both Linux and non-Linux) has be 16285updated to 2003. 16286 16287Code and Data Size: Current core subsystem library sizes are shown 16288below. These are the code and data sizes for the acpica.lib 16289produced by the Microsoft Visual C++ 6.0 compiler, and these 16290values do not include any ACPI driver or OSPM code. The debug 16291version of the code includes the debug output trace mechanism and 16292has a much larger code and data size. Note that these values will 16293vary depending on the efficiency of the compiler and the compiler 16294options used during generation. 16295 16296 Previous Release 16297 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16298 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16299 Current Release: 16300 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16301 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16302 16303 163042) Linux 16305 16306Fixed an oops on module insertion/removal (Matthew Tippett) 16307 16308(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 16309 16310(2.5) Replace pr_debug (Randy Dunlap) 16311 16312(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 16313 16314(Both) Eliminate spawning of thread from timer callback, in favor 16315of schedule_work() 16316 16317(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 16318 16319(Both) Added define for Fixed Function HW region (Matthew Wilcox) 16320 16321(Both) Add missing statics to button.c (Pavel Machek) 16322 16323Several changes have been made to the source code translation 16324utility that generates the Linux Code in order to make the code 16325more "Linux-like": 16326 16327All typedefs on structs and unions have been removed in keeping 16328with the Linux coding style. 16329 16330Removed the non-Linux SourceSafe module revision number from each 16331module header. 16332 16333Completed major overhaul of symbols to be lowercase for linux. 16334Doubled the number of symbols that are lowercase. 16335 16336Fixed a problem where identifiers within procedure headers and 16337within quotes were not fully lower cased (they were left with a 16338starting capital.) 16339 16340Some C macros whose only purpose is to allow the generation of 16- 16341bit code are now completely removed in the Linux code, increasing 16342readability and maintainability. 16343 16344---------------------------------------- 16345 1634612 December 2002. Summary of changes for version 20021212. 16347 16348 163491) ACPI CA Core Subsystem: 16350 16351Fixed a problem where the creation of a zero-length AML Buffer 16352would cause a fault. 16353 16354Fixed a problem where a Buffer object that pointed to a static AML 16355buffer (in an ACPI table) could inadvertently be deleted, causing 16356memory corruption. 16357 16358Fixed a problem where a user buffer (passed in to the external 16359ACPI CA interfaces) could be overwritten if the buffer was too 16360small to complete the operation, causing memory corruption. 16361 16362Fixed a problem in the Buffer-to-String conversion code where a 16363string of length one was always returned, regardless of the size 16364of the input Buffer object. 16365 16366Removed the NATIVE_CHAR data type across the entire source due to 16367lack of need and lack of consistent use. 16368 16369Code and Data Size: Current core subsystem library sizes are shown 16370below. These are the code and data sizes for the acpica.lib 16371produced by the Microsoft Visual C++ 6.0 compiler, and these 16372values do not include any ACPI driver or OSPM code. The debug 16373version of the code includes the debug output trace mechanism and 16374has a much larger code and data size. Note that these values will 16375vary depending on the efficiency of the compiler and the compiler 16376options used during generation. 16377 16378 Previous Release 16379 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16380 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16381 Current Release: 16382 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 16383 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 16384 16385 16386---------------------------------------- 1638705 December 2002. Summary of changes for version 20021205. 16388 163891) ACPI CA Core Subsystem: 16390 16391Fixed a problem where a store to a String or Buffer object could 16392cause corruption of the DSDT if the object type being stored was 16393the same as the target object type and the length of the object 16394being stored was equal to or smaller than the original (existing) 16395target object. This was seen to cause corruption of battery _BIF 16396buffers if the _BIF method modified the buffer on the fly. 16397 16398Fixed a problem where an internal error was generated if a control 16399method invocation was used in an OperationRegion, Buffer, or 16400Package declaration. This was caused by the deferred parsing of 16401the control method and thus the deferred creation of the internal 16402method object. The solution to this problem was to create the 16403internal method object at the moment the method is encountered in 16404the first pass - so that subsequent references to the method will 16405able to obtain the required parameter count and thus properly 16406parse the method invocation. This problem presented itself as an 16407AE_AML_INTERNAL during the pass 1 parse phase during table load. 16408 16409Fixed a problem where the internal String object copy routine did 16410not always allocate sufficient memory for the target String object 16411and caused memory corruption. This problem was seen to cause 16412"Allocation already present in list!" errors as memory allocation 16413became corrupted. 16414 16415Implemented a new function for the evaluation of namespace objects 16416that allows the specification of the allowable return object 16417types. This simplifies a lot of code that checks for a return 16418object of one or more specific objects returned from the 16419evaluation (such as _STA, etc.) This may become and external 16420function if it would be useful to ACPI-related drivers. 16421 16422Completed another round of prefixing #defines with "ACPI_" for 16423clarity. 16424 16425Completed additional code restructuring to allow more modular 16426linking for iASL compiler and AcpiExec. Several files were split 16427creating new files. New files: nsparse.c dsinit.c evgpe.c 16428 16429Implemented an abort mechanism to terminate an executing control 16430method via the AML debugger. This feature is useful for debugging 16431control methods that depend (wait) for specific hardware 16432responses. 16433 16434Code and Data Size: Current core subsystem library sizes are shown 16435below. These are the code and data sizes for the acpica.lib 16436produced by the Microsoft Visual C++ 6.0 compiler, and these 16437values do not include any ACPI driver or OSPM code. The debug 16438version of the code includes the debug output trace mechanism and 16439has a much larger code and data size. Note that these values will 16440vary depending on the efficiency of the compiler and the compiler 16441options used during generation. 16442 16443 Previous Release 16444 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16445 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16446 Current Release: 16447 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 16448 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 16449 16450 164512) iASL Compiler/Disassembler 16452 16453Fixed a compiler code generation problem for "Interrupt" Resource 16454Descriptors. If specified in the ASL, the optional "Resource 16455Source Index" and "Resource Source" fields were not inserted into 16456the correct location within the AML resource descriptor, creating 16457an invalid descriptor. 16458 16459Fixed a disassembler problem for "Interrupt" resource descriptors. 16460The optional "Resource Source Index" and "Resource Source" fields 16461were ignored. 16462 16463 16464---------------------------------------- 1646522 November 2002. Summary of changes for version 20021122. 16466 16467 164681) ACPI CA Core Subsystem: 16469 16470Fixed a reported problem where an object stored to a Method Local 16471or Arg was not copied to a new object during the store - the 16472object pointer was simply copied to the Local/Arg. This caused 16473all subsequent operations on the Local/Arg to also affect the 16474original source of the store operation. 16475 16476Fixed a problem where a store operation to a Method Local or Arg 16477was not completed properly if the Local/Arg contained a reference 16478(from RefOf) to a named field. The general-purpose store-to- 16479namespace-node code is now used so that this case is handled 16480automatically. 16481 16482Fixed a problem where the internal object copy routine would cause 16483a protection fault if the object being copied was a Package and 16484contained either 1) a NULL package element or 2) a nested sub- 16485package. 16486 16487Fixed a problem with the GPE initialization that resulted from an 16488ambiguity in the ACPI specification. One section of the 16489specification states that both the address and length of the GPE 16490block must be zero if the block is not supported. Another section 16491implies that only the address need be zero if the block is not 16492supported. The code has been changed so that both the address and 16493the length must be non-zero to indicate a valid GPE block (i.e., 16494if either the address or the length is zero, the GPE block is 16495invalid.) 16496 16497Code and Data Size: Current core subsystem library sizes are shown 16498below. These are the code and data sizes for the acpica.lib 16499produced by the Microsoft Visual C++ 6.0 compiler, and these 16500values do not include any ACPI driver or OSPM code. The debug 16501version of the code includes the debug output trace mechanism and 16502has a much larger code and data size. Note that these values will 16503vary depending on the efficiency of the compiler and the compiler 16504options used during generation. 16505 16506 Previous Release 16507 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16508 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16509 Current Release: 16510 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16511 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 16512 16513 165142) Linux 16515 16516Cleaned up EC driver. Exported an external EC read/write 16517interface. By going through this, other drivers (most notably 16518sonypi) will be able to serialize access to the EC. 16519 16520 165213) iASL Compiler/Disassembler 16522 16523Implemented support to optionally generate include files for both 16524ASM and C (the -i switch). This simplifies BIOS development by 16525automatically creating include files that contain external 16526declarations for the symbols that are created within the 16527 16528(optionally generated) ASM and C AML source files. 16529 16530 16531---------------------------------------- 1653215 November 2002. Summary of changes for version 20021115. 16533 165341) ACPI CA Core Subsystem: 16535 16536Fixed a memory leak problem where an error during resolution of 16537 16538method arguments during a method invocation from another method 16539failed to cleanup properly by deleting all successfully resolved 16540argument objects. 16541 16542Fixed a problem where the target of the Index() operator was not 16543correctly constructed if the source object was a package. This 16544problem has not been detected because the use of a target operand 16545with Index() is very rare. 16546 16547Fixed a problem with the Index() operator where an attempt was 16548made to delete the operand objects twice. 16549 16550Fixed a problem where an attempt was made to delete an operand 16551twice during execution of the CondRefOf() operator if the target 16552did not exist. 16553 16554Implemented the first of perhaps several internal create object 16555functions that create and initialize a specific object type. This 16556consolidates duplicated code wherever the object is created, thus 16557shrinking the size of the subsystem. 16558 16559Implemented improved debug/error messages for errors that occur 16560during nested method invocations. All executing method pathnames 16561are displayed (with the error) as the call stack is unwound - thus 16562simplifying debug. 16563 16564Fixed a problem introduced in the 10/02 release that caused 16565premature deletion of a buffer object if a buffer was used as an 16566ASL operand where an integer operand is required (Thus causing an 16567implicit object conversion from Buffer to Integer.) The change in 16568the 10/02 release was attempting to fix a memory leak (albeit 16569incorrectly.) 16570 16571Code and Data Size: Current core subsystem library sizes are shown 16572below. These are the code and data sizes for the acpica.lib 16573produced by the Microsoft Visual C++ 6.0 compiler, and these 16574values do not include any ACPI driver or OSPM code. The debug 16575version of the code includes the debug output trace mechanism and 16576has a much larger code and data size. Note that these values will 16577vary depending on the efficiency of the compiler and the compiler 16578options used during generation. 16579 16580 Previous Release 16581 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16582 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16583 Current Release: 16584 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 16585 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 16586 16587 165882) Linux 16589 16590Changed the implementation of the ACPI semaphores to use down() 16591instead of down_interruptable(). It is important that the 16592execution of ACPI control methods not be interrupted by signals. 16593Methods must run to completion, or the system may be left in an 16594unknown/unstable state. 16595 16596Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 16597(Shawn Starr) 16598 16599 166003) iASL Compiler/Disassembler 16601 16602 16603Changed the default location of output files. All output files 16604are now placed in the current directory by default instead of in 16605the directory of the source file. This change may affect some 16606existing makefiles, but it brings the behavior of the compiler in 16607line with other similar tools. The location of the output files 16608can be overridden with the -p command line switch. 16609 16610 16611---------------------------------------- 1661211 November 2002. Summary of changes for version 20021111. 16613 16614 166150) ACPI Specification 2.0B is released and is now available at: 16616http://www.acpi.info/index.html 16617 16618 166191) ACPI CA Core Subsystem: 16620 16621Implemented support for the ACPI 2.0 SMBus Operation Regions. 16622This includes the early detection and handoff of the request to 16623the SMBus region handler (avoiding all of the complex field 16624support code), and support for the bidirectional return packet 16625from an SMBus write operation. This paves the way for the 16626development of SMBus drivers in each host operating system. 16627 16628Fixed a problem where the semaphore WAIT_FOREVER constant was 16629defined as 32 bits, but must be 16 bits according to the ACPI 16630specification. This had the side effect of causing ASL 16631Mutex/Event timeouts even though the ASL code requested a wait 16632forever. Changed all internal references to the ACPI timeout 16633parameter to 16 bits to prevent future problems. Changed the name 16634of WAIT_FOREVER to ACPI_WAIT_FOREVER. 16635 16636Code and Data Size: Current core subsystem library sizes are shown 16637below. These are the code and data sizes for the acpica.lib 16638produced by the Microsoft Visual C++ 6.0 compiler, and these 16639values do not include any ACPI driver or OSPM code. The debug 16640version of the code includes the debug output trace mechanism and 16641has a much larger code and data size. Note that these values will 16642vary depending on the efficiency of the compiler and the compiler 16643options used during generation. 16644 16645 Previous Release 16646 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16647 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16648 Current Release: 16649 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 16650 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 16651 16652 166532) Linux 16654 16655Module loading/unloading fixes (John Cagle) 16656 16657 166583) iASL Compiler/Disassembler 16659 16660Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 16661 16662Implemented support for the disassembly of all SMBus protocol 16663keywords (SMBQuick, SMBWord, etc.) 16664 16665---------------------------------------- 1666601 November 2002. Summary of changes for version 20021101. 16667 16668 166691) ACPI CA Core Subsystem: 16670 16671Fixed a problem where platforms that have a GPE1 block but no GPE0 16672block were not handled correctly. This resulted in a "GPE 16673overlap" error message. GPE0 is no longer required. 16674 16675Removed code added in the previous release that inserted nodes 16676into the namespace in alphabetical order. This caused some side- 16677effects on various machines. The root cause of the problem is 16678still under investigation since in theory, the internal ordering 16679of the namespace nodes should not matter. 16680 16681 16682Enhanced error reporting for the case where a named object is not 16683found during control method execution. The full ACPI namepath 16684(name reference) of the object that was not found is displayed in 16685this case. 16686 16687Note: as a result of the overhaul of the namespace object types in 16688the previous release, the namespace nodes for the predefined 16689scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 16690instead of ACPI_TYPE_ANY. This simplifies the namespace 16691management code but may affect code that walks the namespace tree 16692looking for specific object types. 16693 16694Code and Data Size: Current core subsystem library sizes are shown 16695below. These are the code and data sizes for the acpica.lib 16696produced by the Microsoft Visual C++ 6.0 compiler, and these 16697values do not include any ACPI driver or OSPM code. The debug 16698version of the code includes the debug output trace mechanism and 16699has a much larger code and data size. Note that these values will 16700vary depending on the efficiency of the compiler and the compiler 16701options used during generation. 16702 16703 Previous Release 16704 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 16705 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 16706 Current Release: 16707 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 16708 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 16709 16710 167112) Linux 16712 16713Fixed a problem introduced in the previous release where the 16714Processor and Thermal objects were not recognized and installed in 16715/proc. This was related to the scope type change described above. 16716 16717 167183) iASL Compiler/Disassembler 16719 16720Implemented the -g option to get all of the required ACPI tables 16721from the registry and save them to files (Windows version of the 16722compiler only.) The required tables are the FADT, FACS, and DSDT. 16723 16724Added ACPI table checksum validation during table disassembly in 16725order to catch corrupted tables. 16726 16727 16728---------------------------------------- 1672922 October 2002. Summary of changes for version 20021022. 16730 167311) ACPI CA Core Subsystem: 16732 16733Implemented a restriction on the Scope operator that the target 16734must already exist in the namespace at the time the operator is 16735encountered (during table load or method execution). In other 16736words, forward references are not allowed and Scope() cannot 16737create a new object. This changes the previous behavior where the 16738interpreter would create the name if not found. This new behavior 16739correctly enables the search-to-root algorithm during namespace 16740lookup of the target name. Because of this upsearch, this fixes 16741the known Compaq _SB_.OKEC problem and makes both the AML 16742interpreter and iASL compiler compatible with other ACPI 16743implementations. 16744 16745Completed a major overhaul of the internal ACPI object types for 16746the ACPI Namespace and the associated operand objects. Many of 16747these types had become obsolete with the introduction of the two- 16748pass namespace load. This cleanup simplifies the code and makes 16749the entire namespace load mechanism much clearer and easier to 16750understand. 16751 16752Improved debug output for tracking scope opening/closing to help 16753diagnose scoping issues. The old scope name as well as the new 16754scope name are displayed. Also improved error messages for 16755problems with ASL Mutex objects and error messages for GPE 16756problems. 16757 16758Cleaned up the namespace dump code, removed obsolete code. 16759 16760All string output (for all namespace/object dumps) now uses the 16761common ACPI string output procedure which handles escapes properly 16762and does not emit non-printable characters. 16763 16764Fixed some issues with constants in the 64-bit version of the 16765local C library (utclib.c) 16766 16767 167682) Linux 16769 16770EC Driver: No longer attempts to acquire the Global Lock at 16771interrupt level. 16772 16773 167743) iASL Compiler/Disassembler 16775 16776Implemented ACPI 2.0B grammar change that disallows all Type 1 and 167772 opcodes outside of a control method. This means that the 16778"executable" operators (versus the "namespace" operators) cannot 16779be used at the table level; they can only be used within a control 16780method. 16781 16782Implemented the restriction on the Scope() operator where the 16783target must already exist in the namespace at the time the 16784operator is encountered (during ASL compilation). In other words, 16785forward references are not allowed and Scope() cannot create a new 16786object. This makes the iASL compiler compatible with other ACPI 16787implementations and makes the Scope() implementation adhere to the 16788ACPI specification. 16789 16790Fixed a problem where namepath optimization for the Alias operator 16791was optimizing the wrong path (of the two namepaths.) This caused 16792a "Missing alias link" error message. 16793 16794Fixed a problem where an "unknown reserved name" warning could be 16795incorrectly generated for names like "_SB" when the trailing 16796underscore is not used in the original ASL. 16797 16798Fixed a problem where the reserved name check did not handle 16799NamePaths with multiple NameSegs correctly. The first nameseg of 16800the NamePath was examined instead of the last NameSeg. 16801 16802 16803---------------------------------------- 16804 1680502 October 2002. Summary of changes for this release. 16806 16807 168081) ACPI CA Core Subsystem version 20021002: 16809 16810Fixed a problem where a store/copy of a string to an existing 16811string did not always set the string length properly in the String 16812object. 16813 16814Fixed a reported problem with the ToString operator where the 16815behavior was identical to the ToHexString operator instead of just 16816simply converting a raw buffer to a string data type. 16817 16818Fixed a problem where CopyObject and the other "explicit" 16819conversion operators were not updating the internal namespace node 16820type as part of the store operation. 16821 16822Fixed a memory leak during implicit source operand conversion 16823where the original object was not deleted if it was converted to a 16824new object of a different type. 16825 16826Enhanced error messages for all problems associated with namespace 16827lookups. Common procedure generates and prints the lookup name as 16828well as the formatted status. 16829 16830Completed implementation of a new design for the Alias support 16831within the namespace. The existing design did not handle the case 16832where a new object was assigned to one of the two names due to the 16833use of an explicit conversion operator, resulting in the two names 16834pointing to two different objects. The new design simply points 16835the Alias name to the original name node - not to the object. 16836This results in a level of indirection that must be handled in the 16837name resolution mechanism. 16838 16839Code and Data Size: Current core subsystem library sizes are shown 16840below. These are the code and data sizes for the acpica.lib 16841produced by the Microsoft Visual C++ 6.0 compiler, and these 16842values do not include any ACPI driver or OSPM code. The debug 16843version of the code includes the debug output trace mechanism and 16844has a larger code and data size. Note that these values will vary 16845depending on the efficiency of the compiler and the compiler 16846options used during generation. 16847 16848 Previous Release 16849 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 16850 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 16851 Current Release: 16852 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 16853 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 16854 16855 168562) Linux 16857 16858Initialize thermal driver's timer before it is used. (Knut 16859Neumann) 16860 16861Allow handling negative celsius values. (Kochi Takayoshi) 16862 16863Fix thermal management and make trip points. R/W (Pavel Machek) 16864 16865Fix /proc/acpi/sleep. (P. Christeas) 16866 16867IA64 fixes. (David Mosberger) 16868 16869Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 16870 16871Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 16872Brodowski) 16873 16874 168753) iASL Compiler/Disassembler 16876 16877Clarified some warning/error messages. 16878 16879 16880---------------------------------------- 1688118 September 2002. Summary of changes for this release. 16882 16883 168841) ACPI CA Core Subsystem version 20020918: 16885 16886Fixed a reported problem with reference chaining (via the Index() 16887and RefOf() operators) in the ObjectType() and SizeOf() operators. 16888The definition of these operators includes the dereferencing of 16889all chained references to return information on the base object. 16890 16891Fixed a problem with stores to indexed package elements - the 16892existing code would not complete the store if an "implicit 16893conversion" was not performed. In other words, if the existing 16894object (package element) was to be replaced completely, the code 16895didn't handle this case. 16896 16897Relaxed typechecking on the ASL "Scope" operator to allow the 16898target name to refer to an object of type Integer, String, or 16899Buffer, in addition to the scoping object types (Device, 16900predefined Scopes, Processor, PowerResource, and ThermalZone.) 16901This allows existing AML code that has workarounds for a bug in 16902Windows to function properly. A warning is issued, however. This 16903affects both the AML interpreter and the iASL compiler. Below is 16904an example of this type of ASL code: 16905 16906 Name(DEB,0x00) 16907 Scope(DEB) 16908 { 16909 16910Fixed some reported problems with 64-bit integer support in the 16911local implementation of C library functions (clib.c) 16912 16913 169142) Linux 16915 16916Use ACPI fix map region instead of IOAPIC region, since it is 16917undefined in non-SMP. 16918 16919Ensure that the SCI has the proper polarity and trigger, even on 16920systems that do not have an interrupt override entry in the MADT. 16921 169222.5 big driver reorganization (Pat Mochel) 16923 16924Use early table mapping code from acpitable.c (Andi Kleen) 16925 16926New blacklist entries (Andi Kleen) 16927 16928Blacklist improvements. Split blacklist code out into a separate 16929file. Move checking the blacklist to very early. Previously, we 16930would use ACPI tables, and then halfway through init, check the 16931blacklist -- too late. Now, it's early enough to completely fall- 16932back to non-ACPI. 16933 16934 169353) iASL Compiler/Disassembler version 20020918: 16936 16937Fixed a problem where the typechecking code didn't know that an 16938alias could point to a method. In other words, aliases were not 16939being dereferenced during typechecking. 16940 16941 16942---------------------------------------- 1694329 August 2002. Summary of changes for this release. 16944 169451) ACPI CA Core Subsystem Version 20020829: 16946 16947If the target of a Scope() operator already exists, it must be an 16948object type that actually opens a scope -- such as a Device, 16949Method, Scope, etc. This is a fatal runtime error. Similar error 16950check has been added to the iASL compiler also. 16951 16952Tightened up the namespace load to disallow multiple names in the 16953same scope. This previously was allowed if both objects were of 16954the same type. (i.e., a lookup was the same as entering a new 16955name). 16956 16957 169582) Linux 16959 16960Ensure that the ACPI interrupt has the proper trigger and 16961polarity. 16962 16963local_irq_disable is extraneous. (Matthew Wilcox) 16964 16965Make "acpi=off" actually do what it says, and not use the ACPI 16966interpreter *or* the tables. 16967 16968Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 16969Takayoshi) 16970 16971 169723) iASL Compiler/Disassembler Version 20020829: 16973 16974Implemented namepath optimization for name declarations. For 16975example, a declaration like "Method (\_SB_.ABCD)" would get 16976optimized to "Method (ABCD)" if the declaration is within the 16977\_SB_ scope. This optimization is in addition to the named 16978reference path optimization first released in the previous 16979version. This would seem to complete all possible optimizations 16980for namepaths within the ASL/AML. 16981 16982If the target of a Scope() operator already exists, it must be an 16983object type that actually opens a scope -- such as a Device, 16984Method, Scope, etc. 16985 16986Implemented a check and warning for unreachable code in the same 16987block below a Return() statement. 16988 16989Fixed a problem where the listing file was not generated if the 16990compiler aborted if the maximum error count was exceeded (200). 16991 16992Fixed a problem where the typechecking of method return values was 16993broken. This includes the check for a return value when the 16994method is invoked as a TermArg (a return value is expected.) 16995 16996Fixed a reported problem where EOF conditions during a quoted 16997string or comment caused a fault. 16998 16999 17000---------------------------------------- 1700115 August 2002. Summary of changes for this release. 17002 170031) ACPI CA Core Subsystem Version 20020815: 17004 17005Fixed a reported problem where a Store to a method argument that 17006contains a reference did not perform the indirect store correctly. 17007This problem was created during the conversion to the new 17008reference object model - the indirect store to a method argument 17009code was not updated to reflect the new model. 17010 17011Reworked the ACPI mode change code to better conform to ACPI 2.0, 17012handle corner cases, and improve code legibility (Kochi Takayoshi) 17013 17014Fixed a problem with the pathname parsing for the carat (^) 17015prefix. The heavy use of the carat operator by the new namepath 17016optimization in the iASL compiler uncovered a problem with the AML 17017interpreter handling of this prefix. In the case where one or 17018more carats precede a single nameseg, the nameseg was treated as 17019standalone and the search rule (to root) was inadvertently 17020applied. This could cause both the iASL compiler and the 17021interpreter to find the wrong object or to miss the error that 17022should occur if the object does not exist at that exact pathname. 17023 17024Found and fixed the problem where the HP Pavilion DSDT would not 17025load. This was a relatively minor tweak to the table loading code 17026(a problem caused by the unexpected encounter with a method 17027invocation not within a control method), but it does not solve the 17028overall issue of the execution of AML code at the table level. 17029This investigation is still ongoing. 17030 17031Code and Data Size: Current core subsystem library sizes are shown 17032below. These are the code and data sizes for the acpica.lib 17033produced by the Microsoft Visual C++ 6.0 compiler, and these 17034values do not include any ACPI driver or OSPM code. The debug 17035version of the code includes the debug output trace mechanism and 17036has a larger code and data size. Note that these values will vary 17037depending on the efficiency of the compiler and the compiler 17038options used during generation. 17039 17040 Previous Release 17041 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 17042 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 17043 Current Release: 17044 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 17045 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 17046 17047 170482) Linux 17049 17050Remove redundant slab.h include (Brad Hards) 17051 17052Fix several bugs in thermal.c (Herbert Nachtnebel) 17053 17054Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 17055 17056Change acpi_system_suspend to use updated irq functions (Pavel 17057Machek) 17058 17059Export acpi_get_firmware_table (Matthew Wilcox) 17060 17061Use proper root proc entry for ACPI (Kochi Takayoshi) 17062 17063Fix early-boot table parsing (Bjorn Helgaas) 17064 17065 170663) iASL Compiler/Disassembler 17067 17068Reworked the compiler options to make them more consistent and to 17069use two-letter options where appropriate. We were running out of 17070sensible letters. This may break some makefiles, so check the 17071current options list by invoking the compiler with no parameters. 17072 17073Completed the design and implementation of the ASL namepath 17074optimization option for the compiler. This option optimizes all 17075references to named objects to the shortest possible path. The 17076first attempt tries to utilize a single nameseg (4 characters) and 17077the "search-to-root" algorithm used by the interpreter. If that 17078cannot be used (because either the name is not in the search path 17079or there is a conflict with another object with the same name), 17080the pathname is optimized using the carat prefix (usually a 17081shorter string than specifying the entire path from the root.) 17082 17083Implemented support to obtain the DSDT from the Windows registry 17084(when the disassembly option is specified with no input file). 17085Added this code as the implementation for AcpiOsTableOverride in 17086the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 17087utility) to scan memory for the DSDT to the AcpiOsTableOverride 17088function in the DOS OSL to make the disassembler truly OS 17089independent. 17090 17091Implemented a new option to disassemble and compile in one step. 17092When used without an input filename, this option will grab the 17093DSDT from the local machine, disassemble it, and compile it in one 17094step. 17095 17096Added a warning message for invalid escapes (a backslash followed 17097by any character other than the allowable escapes). This catches 17098the quoted string error "\_SB_" (which should be "\\_SB_" ). 17099 17100Also, there are numerous instances in the ACPI specification where 17101this error occurs. 17102 17103Added a compiler option to disable all optimizations. This is 17104basically the "compatibility mode" because by using this option, 17105the AML code will come out exactly the same as other ASL 17106compilers. 17107 17108Added error messages for incorrectly ordered dependent resource 17109functions. This includes: missing EndDependentFn macro at end of 17110dependent resource list, nested dependent function macros (both 17111start and end), and missing StartDependentFn macro. These are 17112common errors that should be caught at compile time. 17113 17114Implemented _OSI support for the disassembler and compiler. _OSI 17115must be included in the namespace for proper disassembly (because 17116the disassembler must know the number of arguments.) 17117 17118Added an "optimization" message type that is optional (off by 17119default). This message is used for all optimizations - including 17120constant folding, integer optimization, and namepath optimization. 17121 17122---------------------------------------- 1712325 July 2002. Summary of changes for this release. 17124 17125 171261) ACPI CA Core Subsystem Version 20020725: 17127 17128The AML Disassembler has been enhanced to produce compilable ASL 17129code and has been integrated into the iASL compiler (see below) as 17130well as the single-step disassembly for the AML debugger and the 17131disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 17132resource templates and macros are fully supported. The 17133disassembler has been tested on over 30 different AML files, 17134producing identical AML when the resulting disassembled ASL file 17135is recompiled with the same ASL compiler. 17136 17137Modified the Resource Manager to allow zero interrupts and zero 17138dma channels during the GetCurrentResources call. This was 17139causing problems on some platforms. 17140 17141Added the AcpiOsRedirectOutput interface to the OSL to simplify 17142output redirection for the AcpiOsPrintf and AcpiOsVprintf 17143interfaces. 17144 17145Code and Data Size: Current core subsystem library sizes are shown 17146below. These are the code and data sizes for the acpica.lib 17147produced by the Microsoft Visual C++ 6.0 compiler, and these 17148values do not include any ACPI driver or OSPM code. The debug 17149version of the code includes the debug output trace mechanism and 17150has a larger code and data size. Note that these values will vary 17151depending on the efficiency of the compiler and the compiler 17152options used during generation. 17153 17154 Previous Release 17155 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 17156 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 17157 Current Release: 17158 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 17159 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 17160 17161 171622) Linux 17163 17164Fixed a panic in the EC driver (Dominik Brodowski) 17165 17166Implemented checksum of the R/XSDT itself during Linux table scan 17167(Richard Schaal) 17168 17169 171703) iASL compiler 17171 17172The AML disassembler is integrated into the compiler. The "-d" 17173option invokes the disassembler to completely disassemble an 17174input AML file, producing as output a text ASL file with the 17175extension ".dsl" (to avoid name collisions with existing .asl 17176source files.) A future enhancement will allow the disassembler 17177to obtain the BIOS DSDT from the registry under Windows. 17178 17179Fixed a problem with the VendorShort and VendorLong resource 17180descriptors where an invalid AML sequence was created. 17181 17182Implemented a fix for BufferData term in the ASL parser. It was 17183inadvertently defined twice, allowing invalid syntax to pass and 17184causing reduction conflicts. 17185 17186Fixed a problem where the Ones opcode could get converted to a 17187value of zero if "Ones" was used where a byte, word or dword value 17188was expected. The 64-bit value is now truncated to the correct 17189size with the correct value. 17190 17191 17192 17193---------------------------------------- 1719402 July 2002. Summary of changes for this release. 17195 17196 171971) ACPI CA Core Subsystem Version 20020702: 17198 17199The Table Manager code has been restructured to add several new 17200features. Tables that are not required by the core subsystem 17201(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 17202validated in any way and are returned from AcpiGetFirmwareTable if 17203requested. The AcpiOsTableOverride interface is now called for 17204each table that is loaded by the subsystem in order to allow the 17205host to override any table it chooses. Previously, only the DSDT 17206could be overridden. Added one new files, tbrsdt.c and 17207tbgetall.c. 17208 17209Fixed a problem with the conversion of internal package objects to 17210external objects (when a package is returned from a control 17211method.) The return buffer length was set to zero instead of the 17212proper length of the package object. 17213 17214Fixed a reported problem with the use of the RefOf and DeRefOf 17215operators when passing reference arguments to control methods. A 17216new type of Reference object is used internally for references 17217produced by the RefOf operator. 17218 17219Added additional error messages in the Resource Manager to explain 17220AE_BAD_DATA errors when they occur during resource parsing. 17221 17222Split the AcpiEnableSubsystem into two primitives to enable a 17223finer granularity initialization sequence. These two calls should 17224be called in this order: AcpiEnableSubsystem (flags), 17225AcpiInitializeObjects (flags). The flags parameter remains the 17226same. 17227 17228 172292) Linux 17230 17231Updated the ACPI utilities module to understand the new style of 17232fully resolved package objects that are now returned from the core 17233subsystem. This eliminates errors of the form: 17234 17235 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 17236 acpi_utils-0430 [145] acpi_evaluate_reference: 17237 Invalid element in package (not a device reference) 17238 17239The method evaluation utility uses the new buffer allocation 17240scheme instead of calling AcpiEvaluate Object twice. 17241 17242Added support for ECDT. This allows the use of the Embedded 17243 17244Controller before the namespace has been fully initialized, which 17245is necessary for ACPI 2.0 support, and for some laptops to 17246initialize properly. (Laptops using ECDT are still rare, so only 17247limited testing was performed of the added functionality.) 17248 17249Fixed memory leaks in the EC driver. 17250 17251Eliminated a brittle code structure in acpi_bus_init(). 17252 17253Eliminated the acpi_evaluate() helper function in utils.c. It is 17254no longer needed since acpi_evaluate_object can optionally 17255allocate memory for the return object. 17256 17257Implemented fix for keyboard hang when getting battery readings on 17258some systems (Stephen White) 17259 17260PCI IRQ routing update (Dominik Brodowski) 17261 17262Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 17263support 17264 17265---------------------------------------- 1726611 June 2002. Summary of changes for this release. 17267 17268 172691) ACPI CA Core Subsystem Version 20020611: 17270 17271Fixed a reported problem where constants such as Zero and One 17272appearing within _PRT packages were not handled correctly within 17273the resource manager code. Originally reported against the ASL 17274compiler because the code generator now optimizes integers to 17275their minimal AML representation (i.e. AML constants if possible.) 17276The _PRT code now handles all AML constant opcodes correctly 17277(Zero, One, Ones, Revision). 17278 17279Fixed a problem with the Concatenate operator in the AML 17280interpreter where a buffer result object was incorrectly marked as 17281not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 17282 17283All package sub-objects are now fully resolved before they are 17284returned from the external ACPI interfaces. This means that name 17285strings are resolved to object handles, and constant operators 17286(Zero, One, Ones, Revision) are resolved to Integers. 17287 17288Implemented immediate resolution of the AML Constant opcodes 17289(Zero, One, Ones, Revision) to Integer objects upon detection 17290within the AML stream. This has simplified and reduced the 17291generated code size of the subsystem by eliminating about 10 17292switch statements for these constants (which previously were 17293contained in Reference objects.) The complicating issues are that 17294the Zero opcode is used as a "placeholder" for unspecified 17295optional target operands and stores to constants are defined to be 17296no-ops. 17297 17298Code and Data Size: Current core subsystem library sizes are shown 17299below. These are the code and data sizes for the acpica.lib 17300produced by the Microsoft Visual C++ 6.0 compiler, and these 17301values do not include any ACPI driver or OSPM code. The debug 17302version of the code includes the debug output trace mechanism and 17303has a larger code and data size. Note that these values will vary 17304depending on the efficiency of the compiler and the compiler 17305options used during generation. 17306 17307 Previous Release 17308 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17309 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17310 Current Release: 17311 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 17312 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 17313 17314 173152) Linux 17316 17317 17318Added preliminary support for obtaining _TRA data for PCI root 17319bridges (Bjorn Helgaas). 17320 17321 173223) iASL Compiler Version X2046: 17323 17324Fixed a problem where the "_DDN" reserved name was defined to be a 17325control method with one argument. There are no arguments, and 17326_DDN does not have to be a control method. 17327 17328Fixed a problem with the Linux version of the compiler where the 17329source lines printed with error messages were the wrong lines. 17330This turned out to be the "LF versus CR/LF" difference between 17331Windows and Unix. This appears to be the longstanding issue 17332concerning listing output and error messages. 17333 17334Fixed a problem with the Linux version of compiler where opcode 17335names within error messages were wrong. This was caused by a 17336slight difference in the output of the Flex tool on Linux versus 17337Windows. 17338 17339Fixed a problem with the Linux compiler where the hex output files 17340contained some garbage data caused by an internal buffer overrun. 17341 17342 17343---------------------------------------- 1734417 May 2002. Summary of changes for this release. 17345 17346 173471) ACPI CA Core Subsystem Version 20020517: 17348 17349Implemented a workaround to an BIOS bug discovered on the HP 17350OmniBook where the FADT revision number and the table size are 17351inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 17352behavior is to fallback to using only the ACPI 1.0 fields of the 17353FADT if the table is too small to be a ACPI 2.0 table as claimed 17354by the revision number. Although this is a BIOS bug, this is a 17355case where the workaround is simple enough and with no side 17356effects, so it seemed prudent to add it. A warning message is 17357issued, however. 17358 17359Implemented minimum size checks for the fixed-length ACPI tables - 17360- the FADT and FACS, as well as consistency checks between the 17361revision number and the table size. 17362 17363Fixed a reported problem in the table override support where the 17364new table pointer was incorrectly treated as a physical address 17365instead of a logical address. 17366 17367Eliminated the use of the AE_AML_ERROR exception and replaced it 17368with more descriptive codes. 17369 17370Fixed a problem where an exception would occur if an ASL Field was 17371defined with no named Field Units underneath it (used by some 17372index fields). 17373 17374Code and Data Size: Current core subsystem library sizes are shown 17375below. These are the code and data sizes for the acpica.lib 17376produced by the Microsoft Visual C++ 6.0 compiler, and these 17377values do not include any ACPI driver or OSPM code. The debug 17378version of the code includes the debug output trace mechanism and 17379has a larger code and data size. Note that these values will vary 17380depending on the efficiency of the compiler and the compiler 17381options used during generation. 17382 17383 Previous Release 17384 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17385 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17386 Current Release: 17387 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 17388 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 17389 17390 17391 173922) Linux 17393 17394Much work done on ACPI init (MADT and PCI IRQ routing support). 17395(Paul D. and Dominik Brodowski) 17396 17397Fix PCI IRQ-related panic on boot (Sam Revitch) 17398 17399Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 17400 17401Fix "MHz" typo (Dominik Brodowski) 17402 17403Fix RTC year 2000 issue (Dominik Brodowski) 17404 17405Preclude multiple button proc entries (Eric Brunet) 17406 17407Moved arch-specific code out of include/platform/aclinux.h 17408 174093) iASL Compiler Version X2044: 17410 17411Implemented error checking for the string used in the EISAID macro 17412(Usually used in the definition of the _HID object.) The code now 17413strictly enforces the PnP format - exactly 7 characters, 3 17414uppercase letters and 4 hex digits. 17415 17416If a raw string is used in the definition of the _HID object 17417(instead of the EISAID macro), the string must contain all 17418alphanumeric characters (e.g., "*PNP0011" is not allowed because 17419of the asterisk.) 17420 17421Implemented checking for invalid use of ACPI reserved names for 17422most of the name creation operators (Name, Device, Event, Mutex, 17423OperationRegion, PowerResource, Processor, and ThermalZone.) 17424Previously, this check was only performed for control methods. 17425 17426Implemented an additional check on the Name operator to emit an 17427error if a reserved name that must be implemented in ASL as a 17428control method is used. We know that a reserved name must be a 17429method if it is defined with input arguments. 17430 17431The warning emitted when a namespace object reference is not found 17432during the cross reference phase has been changed into an error. 17433The "External" directive should be used for names defined in other 17434modules. 17435 17436 174374) Tools and Utilities 17438 17439The 16-bit tools (adump16 and aexec16) have been regenerated and 17440tested. 17441 17442Fixed a problem with the output of both acpidump and adump16 where 17443the indentation of closing parentheses and brackets was not 17444 17445aligned properly with the parent block. 17446 17447 17448---------------------------------------- 1744903 May 2002. Summary of changes for this release. 17450 17451 174521) ACPI CA Core Subsystem Version 20020503: 17453 17454Added support a new OSL interface that allows the host operating 17455 17456system software to override the DSDT found in the firmware - 17457AcpiOsTableOverride. With this interface, the OSL can examine the 17458version of the firmware DSDT and replace it with a different one 17459if desired. 17460 17461Added new external interfaces for accessing ACPI registers from 17462device drivers and other system software - AcpiGetRegister and 17463AcpiSetRegister. This was simply an externalization of the 17464existing AcpiHwBitRegister interfaces. 17465 17466Fixed a regression introduced in the previous build where the 17467ASL/AML CreateField operator always returned an error, 17468"destination must be a NS Node". 17469 17470Extended the maximum time (before failure) to successfully enable 17471ACPI mode to 3 seconds. 17472 17473Code and Data Size: Current core subsystem library sizes are shown 17474below. These are the code and data sizes for the acpica.lib 17475produced by the Microsoft Visual C++ 6.0 compiler, and these 17476values do not include any ACPI driver or OSPM code. The debug 17477version of the code includes the debug output trace mechanism and 17478has a larger code and data size. Note that these values will vary 17479depending on the efficiency of the compiler and the compiler 17480options used during generation. 17481 17482 Previous Release 17483 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17484 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17485 Current Release: 17486 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 17487 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 17488 17489 174902) Linux 17491 17492Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 17493free. While 3 out of 4 of our in-house systems work fine, the last 17494one still hangs when testing the LAPIC timer. 17495 17496Renamed many files in 2.5 kernel release to omit "acpi_" from the 17497name. 17498 17499Added warning on boot for Presario 711FR. 17500 17501Sleep improvements (Pavel Machek) 17502 17503ACPI can now be built without CONFIG_PCI enabled. 17504 17505IA64: Fixed memory map functions (JI Lee) 17506 17507 175083) iASL Compiler Version X2043: 17509 17510Added support to allow the compiler to be integrated into the MS 17511VC++ development environment for one-button compilation of single 17512files or entire projects -- with error-to-source-line mapping. 17513 17514Implemented support for compile-time constant folding for the 17515Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 17516specification. This allows the ASL writer to use expressions 17517instead of Integer/Buffer/String constants in terms that must 17518evaluate to constants at compile time and will also simplify the 17519emitted AML in any such sub-expressions that can be folded 17520(evaluated at compile-time.) This increases the size of the 17521compiler significantly because a portion of the ACPI CA AML 17522interpreter is included within the compiler in order to pre- 17523evaluate constant expressions. 17524 17525 17526Fixed a problem with the "Unicode" ASL macro that caused the 17527compiler to fault. (This macro is used in conjunction with the 17528_STR reserved name.) 17529 17530Implemented an AML opcode optimization to use the Zero, One, and 17531Ones opcodes where possible to further reduce the size of integer 17532constants and thus reduce the overall size of the generated AML 17533code. 17534 17535Implemented error checking for new reserved terms for ACPI version 175362.0A. 17537 17538Implemented the -qr option to display the current list of ACPI 17539reserved names known to the compiler. 17540 17541Implemented the -qc option to display the current list of ASL 17542operators that are allowed within constant expressions and can 17543therefore be folded at compile time if the operands are constants. 17544 17545 175464) Documentation 17547 17548Updated the Programmer's Reference for new interfaces, data types, 17549and memory allocation model options. 17550 17551Updated the iASL Compiler User Reference to apply new format and 17552add information about new features and options. 17553 17554---------------------------------------- 1755519 April 2002. Summary of changes for this release. 17556 175571) ACPI CA Core Subsystem Version 20020419: 17558 17559The source code base for the Core Subsystem has been completely 17560cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 17561versions. The Lint option files used are included in the 17562/acpi/generate/lint directory. 17563 17564Implemented enhanced status/error checking across the entire 17565Hardware manager subsystem. Any hardware errors (reported from 17566the OSL) are now bubbled up and will abort a running control 17567method. 17568 17569 17570Fixed a problem where the per-ACPI-table integer width (32 or 64) 17571was stored only with control method nodes, causing a fault when 17572non-control method code was executed during table loading. The 17573solution implemented uses a global variable to indicate table 17574width across the entire ACPI subsystem. Therefore, ACPI CA does 17575not support mixed integer widths across different ACPI tables 17576(DSDT, SSDT). 17577 17578Fixed a problem where NULL extended fields (X fields) in an ACPI 175792.0 ACPI FADT caused the table load to fail. Although the 17580existing ACPI specification is a bit fuzzy on this topic, the new 17581behavior is to fall back on a ACPI 1.0 field if the corresponding 17582ACPI 2.0 X field is zero (even though the table revision indicates 17583a full ACPI 2.0 table.) The ACPI specification will be updated to 17584clarify this issue. 17585 17586Fixed a problem with the SystemMemory operation region handler 17587where memory was always accessed byte-wise even if the AML- 17588specified access width was larger than a byte. This caused 17589problems on systems with memory-mapped I/O. Memory is now 17590accessed with the width specified. On systems that do not support 17591non-aligned transfers, a check is made to guarantee proper address 17592alignment before proceeding in order to avoid an AML-caused 17593alignment fault within the kernel. 17594 17595 17596Fixed a problem with the ExtendedIrq resource where only one byte 17597of the 4-byte Irq field was extracted. 17598 17599Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 17600function was out of date and required a rewrite. 17601 17602Code and Data Size: Current core subsystem library sizes are shown 17603below. These are the code and data sizes for the acpica.lib 17604produced by the Microsoft Visual C++ 6.0 compiler, and these 17605values do not include any ACPI driver or OSPM code. The debug 17606version of the code includes the debug output trace mechanism and 17607has a larger code and data size. Note that these values will vary 17608depending on the efficiency of the compiler and the compiler 17609options used during generation. 17610 17611 Previous Release 17612 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17613 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17614 Current Release: 17615 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 17616 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 17617 17618 176192) Linux 17620 17621PCI IRQ routing fixes (Dominik Brodowski) 17622 17623 176243) iASL Compiler Version X2042: 17625 17626Implemented an additional compile-time error check for a field 17627unit whose size + minimum access width would cause a run-time 17628access beyond the end-of-region. Previously, only the field size 17629itself was checked. 17630 17631The Core subsystem and iASL compiler now share a common parse 17632object in preparation for compile-time evaluation of the type 176333/4/5 ASL operators. 17634 17635 17636---------------------------------------- 17637Summary of changes for this release: 03_29_02 17638 176391) ACPI CA Core Subsystem Version 20020329: 17640 17641Implemented support for late evaluation of TermArg operands to 17642Buffer and Package objects. This allows complex expressions to be 17643used in the declarations of these object types. 17644 17645Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 176461.0, if the field was larger than 32 bits, it was returned as a 17647buffer - otherwise it was returned as an integer. In ACPI 2.0, 17648the field is returned as a buffer only if the field is larger than 1764964 bits. The TableRevision is now considered when making this 17650conversion to avoid incompatibility with existing ASL code. 17651 17652Implemented logical addressing for AcpiOsGetRootPointer. This 17653allows an RSDP with either a logical or physical address. With 17654this support, the host OS can now override all ACPI tables with 17655one logical RSDP. Includes implementation of "typed" pointer 17656support to allow a common data type for both physical and logical 17657pointers internally. This required a change to the 17658AcpiOsGetRootPointer interface. 17659 17660Implemented the use of ACPI 2.0 Generic Address Structures for all 17661GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 17662mapped I/O for these ACPI features. 17663 17664Initialization now ignores not only non-required tables (All 17665tables other than the FADT, FACS, DSDT, and SSDTs), but also does 17666not validate the table headers of unrecognized tables. 17667 17668Fixed a problem where a notify handler could only be 17669installed/removed on an object of type Device. All "notify" 17670 17671objects are now supported -- Devices, Processor, Power, and 17672Thermal. 17673 17674Removed most verbosity from the ACPI_DB_INFO debug level. Only 17675critical information is returned when this debug level is enabled. 17676 17677Code and Data Size: Current core subsystem library sizes are shown 17678below. These are the code and data sizes for the acpica.lib 17679produced by the Microsoft Visual C++ 6.0 compiler, and these 17680values do not include any ACPI driver or OSPM code. The debug 17681version of the code includes the debug output trace mechanism and 17682has a larger code and data size. Note that these values will vary 17683depending on the efficiency of the compiler and the compiler 17684options used during generation. 17685 17686 Previous Release 17687 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 17688 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 17689 Current Release: 17690 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 17691 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 17692 17693 176942) Linux: 17695 17696The processor driver (acpi_processor.c) now fully supports ACPI 176972.0-based processor performance control (e.g. Intel(R) 17698SpeedStep(TM) technology) Note that older laptops that only have 17699the Intel "applet" interface are not supported through this. The 17700'limit' and 'performance' interface (/proc) are fully functional. 17701[Note that basic policy for controlling performance state 17702transitions will be included in the next version of ospmd.] The 17703idle handler was modified to more aggressively use C2, and PIIX4 17704errata handling underwent a complete overhaul (big thanks to 17705Dominik Brodowski). 17706 17707Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 17708based devices in the ACPI namespace are now dynamically bound 17709(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 17710This allows, among other things, ACPI to resolve bus numbers for 17711subordinate PCI bridges. 17712 17713Enhanced PCI IRQ routing to get the proper bus number for _PRT 17714entries defined underneath PCI bridges. 17715 17716Added IBM 600E to bad bios list due to invalid _ADR value for 17717PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 17718 17719In the process of adding full MADT support (e.g. IOAPIC) for IA32 17720(acpi.c, mpparse.c) -- stay tuned. 17721 17722Added back visual differentiation between fixed-feature and 17723control-method buttons in dmesg. Buttons are also subtyped (e.g. 17724button/power/PWRF) to simplify button identification. 17725 17726We no longer use -Wno-unused when compiling debug. Please ignore 17727any "_THIS_MODULE defined but not used" messages. 17728 17729Can now shut down the system using "magic sysrq" key. 17730 17731 177323) iASL Compiler version 2041: 17733 17734Fixed a problem where conversion errors for hex/octal/decimal 17735constants were not reported. 17736 17737Implemented a fix for the General Register template Address field. 17738This field was 8 bits when it should be 64. 17739 17740Fixed a problem where errors/warnings were no longer being emitted 17741within the listing output file. 17742 17743Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 17744exactly 4 characters, alphanumeric only. 17745 17746 17747 17748 17749---------------------------------------- 17750Summary of changes for this release: 03_08_02 17751 17752 177531) ACPI CA Core Subsystem Version 20020308: 17754 17755Fixed a problem with AML Fields where the use of the "AccessAny" 17756keyword could cause an interpreter error due to attempting to read 17757or write beyond the end of the parent Operation Region. 17758 17759Fixed a problem in the SystemMemory Operation Region handler where 17760an attempt was made to map memory beyond the end of the region. 17761This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 17762errors on some Linux systems. 17763 17764Fixed a problem where the interpreter/namespace "search to root" 17765algorithm was not functioning for some object types. Relaxed the 17766internal restriction on the search to allow upsearches for all 17767external object types as well as most internal types. 17768 17769 177702) Linux: 17771 17772We now use safe_halt() macro versus individual calls to sti | hlt. 17773 17774Writing to the processor limit interface should now work. "echo 1" 17775will increase the limit, 2 will decrease, and 0 will reset to the 17776 17777default. 17778 17779 177803) ASL compiler: 17781 17782Fixed segfault on Linux version. 17783 17784 17785---------------------------------------- 17786Summary of changes for this release: 02_25_02 17787 177881) ACPI CA Core Subsystem: 17789 17790 17791Fixed a problem where the GPE bit masks were not initialized 17792properly, causing erratic GPE behavior. 17793 17794Implemented limited support for multiple calling conventions. The 17795code can be generated with either the VPL (variable parameter 17796list, or "C") convention, or the FPL (fixed parameter list, or 17797"Pascal") convention. The core subsystem is about 3.4% smaller 17798when generated with FPL. 17799 17800 178012) Linux 17802 17803Re-add some /proc/acpi/event functionality that was lost during 17804the rewrite 17805 17806Resolved issue with /proc events for fixed-feature buttons showing 17807up as the system device. 17808 17809Fixed checks on C2/C3 latencies to be inclusive of maximum values. 17810 17811Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 17812 17813Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 17814 17815Fixed limit interface & usage to fix bugs with passive cooling 17816hysterisis. 17817 17818Restructured PRT support. 17819 17820 17821---------------------------------------- 17822Summary of changes for this label: 02_14_02 17823 17824 178251) ACPI CA Core Subsystem: 17826 17827Implemented support in AcpiLoadTable to allow loading of FACS and 17828FADT tables. 17829 17830Support for the now-obsolete interim 0.71 64-bit ACPI tables has 17831been removed. All 64-bit platforms should be migrated to the ACPI 178322.0 tables. The actbl71.h header has been removed from the source 17833tree. 17834 17835All C macros defined within the subsystem have been prefixed with 17836"ACPI_" to avoid collision with other system include files. 17837 17838Removed the return value for the two AcpiOsPrint interfaces, since 17839it is never used and causes lint warnings for ignoring the return 17840value. 17841 17842Added error checking to all internal mutex acquire and release 17843calls. Although a failure from one of these interfaces is 17844probably a fatal system error, these checks will cause the 17845immediate abort of the currently executing method or interface. 17846 17847Fixed a problem where the AcpiSetCurrentResources interface could 17848fault. This was a side effect of the deployment of the new memory 17849allocation model. 17850 17851Fixed a couple of problems with the Global Lock support introduced 17852in the last major build. The "common" (1.0/2.0) internal FACS was 17853being overwritten with the FACS signature and clobbering the 17854Global Lock pointer. Also, the actual firmware FACS was being 17855unmapped after construction of the "common" FACS, preventing 17856access to the actual Global Lock field within it. The "common" 17857internal FACS is no longer installed as an actual ACPI table; it 17858is used simply as a global. 17859 17860Code and Data Size: Current core subsystem library sizes are shown 17861below. These are the code and data sizes for the acpica.lib 17862produced by the Microsoft Visual C++ 6.0 compiler, and these 17863values do not include any ACPI driver or OSPM code. The debug 17864version of the code includes the debug output trace mechanism and 17865has a larger code and data size. Note that these values will vary 17866depending on the efficiency of the compiler and the compiler 17867options used during generation. 17868 17869 Previous Release (02_07_01) 17870 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 17871 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 17872 Current Release: 17873 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 17874 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 17875 17876 178772) Linux 17878 17879Updated Linux-specific code for core macro and OSL interface 17880changes described above. 17881 17882Improved /proc/acpi/event. It now can be opened only once and has 17883proper poll functionality. 17884 17885Fixed and restructured power management (acpi_bus). 17886 17887Only create /proc "view by type" when devices of that class exist. 17888 17889Fixed "charging/discharging" bug (and others) in acpi_battery. 17890 17891Improved thermal zone code. 17892 17893 178943) ASL Compiler, version X2039: 17895 17896 17897Implemented the new compiler restriction on ASL String hex/octal 17898escapes to non-null, ASCII values. An error results if an invalid 17899value is used. (This will require an ACPI 2.0 specification 17900change.) 17901 17902AML object labels that are output to the optional C and ASM source 17903are now prefixed with both the ACPI table signature and table ID 17904to help guarantee uniqueness within a large BIOS project. 17905 17906 17907---------------------------------------- 17908Summary of changes for this label: 02_01_02 17909 179101) ACPI CA Core Subsystem: 17911 17912ACPI 2.0 support is complete in the entire Core Subsystem and the 17913ASL compiler. All new ACPI 2.0 operators are implemented and all 17914other changes for ACPI 2.0 support are complete. With 17915simultaneous code and data optimizations throughout the subsystem, 17916ACPI 2.0 support has been implemented with almost no additional 17917cost in terms of code and data size. 17918 17919Implemented a new mechanism for allocation of return buffers. If 17920the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 17921be allocated on behalf of the caller. Consolidated all return 17922buffer validation and allocation to a common procedure. Return 17923buffers will be allocated via the primary OSL allocation interface 17924since it appears that a separate pool is not needed by most users. 17925If a separate pool is required for these buffers, the caller can 17926still use the original mechanism and pre-allocate the buffer(s). 17927 17928Implemented support for string operands within the DerefOf 17929operator. 17930 17931Restructured the Hardware and Event managers to be table driven, 17932simplifying the source code and reducing the amount of generated 17933code. 17934 17935Split the common read/write low-level ACPI register bitfield 17936procedure into a separate read and write, simplifying the code 17937considerably. 17938 17939Obsoleted the AcpiOsCallocate OSL interface. This interface was 17940used only a handful of times and didn't have enough critical mass 17941for a separate interface. Replaced with a common calloc procedure 17942in the core. 17943 17944Fixed a reported problem with the GPE number mapping mechanism 17945that allows GPE1 numbers to be non-contiguous with GPE0. 17946Reorganized the GPE information and shrunk a large array that was 17947originally large enough to hold info for all possible GPEs (256) 17948to simply large enough to hold all GPEs up to the largest GPE 17949number on the machine. 17950 17951Fixed a reported problem with resource structure alignment on 64- 17952bit platforms. 17953 17954Changed the AcpiEnableEvent and AcpiDisableEvent external 17955interfaces to not require any flags for the common case of 17956enabling/disabling a GPE. 17957 17958Implemented support to allow a "Notify" on a Processor object. 17959 17960Most TBDs in comments within the source code have been resolved 17961and eliminated. 17962 17963 17964Fixed a problem in the interpreter where a standalone parent 17965prefix (^) was not handled correctly in the interpreter and 17966debugger. 17967 17968Removed obsolete and unnecessary GPE save/restore code. 17969 17970Implemented Field support in the ASL Load operator. This allows a 17971table to be loaded from a named field, in addition to loading a 17972table directly from an Operation Region. 17973 17974Implemented timeout and handle support in the external Global Lock 17975interfaces. 17976 17977Fixed a problem in the AcpiDump utility where pathnames were no 17978longer being generated correctly during the dump of named objects. 17979 17980Modified the AML debugger to give a full display of if/while 17981predicates instead of just one AML opcode at a time. (The 17982predicate can have several nested ASL statements.) The old method 17983was confusing during single stepping. 17984 17985Code and Data Size: Current core subsystem library sizes are shown 17986below. These are the code and data sizes for the acpica.lib 17987produced by the Microsoft Visual C++ 6.0 compiler, and these 17988values do not include any ACPI driver or OSPM code. The debug 17989version of the code includes the debug output trace mechanism and 17990has a larger code and data size. Note that these values will vary 17991depending on the efficiency of the compiler and the compiler 17992options used during generation. 17993 17994 Previous Release (12_18_01) 17995 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 17996 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 17997 Current Release: 17998 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 17999 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 18000 180012) Linux 18002 18003 Implemented fix for PIIX reverse throttling errata (Processor 18004driver) 18005 18006Added new Limit interface (Processor and Thermal drivers) 18007 18008New thermal policy (Thermal driver) 18009 18010Many updates to /proc 18011 18012Battery "low" event support (Battery driver) 18013 18014Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 18015 18016IA32 - IA64 initialization unification, no longer experimental 18017 18018Menuconfig options redesigned 18019 180203) ASL Compiler, version X2037: 18021 18022Implemented several new output features to simplify integration of 18023AML code into firmware: 1) Output the AML in C source code with 18024labels for each named ASL object. The original ASL source code 18025is interleaved as C comments. 2) Output the AML in ASM source code 18026with labels and interleaved ASL source. 3) Output the AML in 18027raw hex table form, in either C or ASM. 18028 18029Implemented support for optional string parameters to the 18030LoadTable operator. 18031 18032Completed support for embedded escape sequences within string 18033literals. The compiler now supports all single character escapes 18034as well as the Octal and Hex escapes. Note: the insertion of a 18035null byte into a string literal (via the hex/octal escape) causes 18036the string to be immediately terminated. A warning is issued. 18037 18038Fixed a problem where incorrect AML was generated for the case 18039where an ASL namepath consists of a single parent prefix ( 18040 18041) with no trailing name segments. 18042 18043The compiler has been successfully generated with a 64-bit C 18044compiler. 18045 18046 18047 18048 18049---------------------------------------- 18050Summary of changes for this label: 12_18_01 18051 180521) Linux 18053 18054Enhanced blacklist with reason and severity fields. Any table's 18055signature may now be used to identify a blacklisted system. 18056 18057Call _PIC control method to inform the firmware which interrupt 18058model the OS is using. Turn on any disabled link devices. 18059 18060Cleaned up busmgr /proc error handling (Andreas Dilger) 18061 18062 2) ACPI CA Core Subsystem: 18063 18064Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 18065while loop) 18066 18067Completed implementation of the ACPI 2.0 "Continue", 18068"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 18069operators. All new ACPI 2.0 operators are now implemented in both 18070the ASL compiler and the AML interpreter. The only remaining ACPI 180712.0 task is support for the String data type in the DerefOf 18072operator. Fixed a problem with AcquireMutex where the status code 18073was lost if the caller had to actually wait for the mutex. 18074 18075Increased the maximum ASL Field size from 64K bits to 4G bits. 18076 18077Completed implementation of the external Global Lock interfaces -- 18078AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 18079Handler parameters were added. 18080 18081Completed another pass at removing warnings and issues when 18082compiling with 64-bit compilers. The code now compiles cleanly 18083with the Intel 64-bit C/C++ compiler. Most notably, the pointer 18084add and subtract (diff) macros have changed considerably. 18085 18086 18087Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1808864-bit platforms, 32-bits on all others. This type is used 18089wherever memory allocation and/or the C sizeof() operator is used, 18090and affects the OSL memory allocation interfaces AcpiOsAllocate 18091and AcpiOsCallocate. 18092 18093Implemented sticky user breakpoints in the AML debugger. 18094 18095Code and Data Size: Current core subsystem library sizes are shown 18096below. These are the code and data sizes for the acpica.lib 18097produced by the Microsoft Visual C++ 6.0 compiler, and these 18098values do not include any ACPI driver or OSPM code. The debug 18099version of the code includes the debug output trace mechanism and 18100has a larger code and data size. Note that these values will vary 18101depending on the efficiency of the compiler and the compiler 18102options used during generation. 18103 18104 Previous Release (12_05_01) 18105 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 18106 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 18107 Current Release: 18108 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 18109 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 18110 18111 3) ASL Compiler, version X2034: 18112 18113Now checks for (and generates an error if detected) the use of a 18114Break or Continue statement without an enclosing While statement. 18115 18116 18117Successfully generated the compiler with the Intel 64-bit C 18118compiler. 18119 18120 ---------------------------------------- 18121Summary of changes for this label: 12_05_01 18122 18123 1) ACPI CA Core Subsystem: 18124 18125The ACPI 2.0 CopyObject operator is fully implemented. This 18126operator creates a new copy of an object (and is also used to 18127bypass the "implicit conversion" mechanism of the Store operator.) 18128 18129The ACPI 2.0 semantics for the SizeOf operator are fully 18130implemented. The change is that performing a SizeOf on a 18131reference object causes an automatic dereference of the object to 18132the actual value before the size is evaluated. This behavior was 18133undefined in ACPI 1.0. 18134 18135The ACPI 2.0 semantics for the Extended IRQ resource descriptor 18136have been implemented. The interrupt polarity and mode are now 18137independently set. 18138 18139Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 18140appearing in Package objects were not properly converted to 18141integers when the internal Package was converted to an external 18142object (via the AcpiEvaluateObject interface.) 18143 18144Fixed a problem with the namespace object deletion mechanism for 18145objects created by control methods. There were two parts to this 18146problem: 1) Objects created during the initialization phase method 18147parse were not being deleted, and 2) The object owner ID mechanism 18148to track objects was broken. 18149 18150Fixed a problem where the use of the ASL Scope operator within a 18151control method would result in an invalid opcode exception. 18152 18153Fixed a problem introduced in the previous label where the buffer 18154length required for the _PRT structure was not being returned 18155correctly. 18156 18157Code and Data Size: Current core subsystem library sizes are shown 18158below. These are the code and data sizes for the acpica.lib 18159produced by the Microsoft Visual C++ 6.0 compiler, and these 18160values do not include any ACPI driver or OSPM code. The debug 18161version of the code includes the debug output trace mechanism and 18162has a larger code and data size. Note that these values will vary 18163depending on the efficiency of the compiler and the compiler 18164options used during generation. 18165 18166 Previous Release (11_20_01) 18167 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 18168 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 18169 18170 Current Release: 18171 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 18172 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 18173 18174 2) Linux: 18175 18176Updated all files to apply cleanly against 2.4.16. 18177 18178Added basic PCI Interrupt Routing Table (PRT) support for IA32 18179(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 18180version supports both static and dynamic PRT entries, but dynamic 18181entries are treated as if they were static (not yet 18182reconfigurable). Architecture- specific code to use this data is 18183absent on IA32 but should be available shortly. 18184 18185Changed the initialization sequence to start the ACPI interpreter 18186(acpi_init) prior to initialization of the PCI driver (pci_init) 18187in init/main.c. This ordering is required to support PRT and 18188facilitate other (future) enhancement. A side effect is that the 18189ACPI bus driver and certain device drivers can no longer be loaded 18190as modules. 18191 18192Modified the 'make menuconfig' options to allow PCI Interrupt 18193Routing support to be included without the ACPI Bus and other 18194device drivers. 18195 18196 3) ASL Compiler, version X2033: 18197 18198Fixed some issues with the use of the new CopyObject and 18199DataTableRegion operators. Both are fully functional. 18200 18201 ---------------------------------------- 18202Summary of changes for this label: 11_20_01 18203 18204 20 November 2001. Summary of changes for this release. 18205 18206 1) ACPI CA Core Subsystem: 18207 18208Updated Index support to match ACPI 2.0 semantics. Storing a 18209Integer, String, or Buffer to an Index of a Buffer will store only 18210the least-significant byte of the source to the Indexed buffer 18211byte. Multiple writes are not performed. 18212 18213Fixed a problem where the access type used in an AccessAs ASL 18214operator was not recorded correctly into the field object. 18215 18216Fixed a problem where ASL Event objects were created in a 18217signalled state. Events are now created in an unsignalled state. 18218 18219The internal object cache is now purged after table loading and 18220initialization to reduce the use of dynamic kernel memory -- on 18221the assumption that object use is greatest during the parse phase 18222of the entire table (versus the run-time use of individual control 18223methods.) 18224 18225ACPI 2.0 variable-length packages are now fully operational. 18226 18227Code and Data Size: Code and Data optimizations have permitted new 18228feature development with an actual reduction in the library size. 18229Current core subsystem library sizes are shown below. These are 18230the code and data sizes for the acpica.lib produced by the 18231Microsoft Visual C++ 6.0 compiler, and these values do not include 18232any ACPI driver or OSPM code. The debug version of the code 18233includes the debug output trace mechanism and has a larger code 18234and data size. Note that these values will vary depending on the 18235efficiency of the compiler and the compiler options used during 18236generation. 18237 18238 Previous Release (11_09_01): 18239 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18240 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18241 18242 Current Release: 18243 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 18244 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 18245 18246 2) Linux: 18247 18248Enhanced the ACPI boot-time initialization code to allow the use 18249of Local APIC tables for processor enumeration on IA-32, and to 18250pave the way for a fully MPS-free boot (on SMP systems) in the 18251near future. This functionality replaces 18252arch/i386/kernel/acpitables.c, which was introduced in an earlier 182532.4.15-preX release. To enable this feature you must add 18254"acpi_boot=on" to the kernel command line -- see the help entry 18255for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 18256the works... 18257 18258Restructured the configuration options to allow boot-time table 18259parsing support without inclusion of the ACPI Interpreter (and 18260other) code. 18261 18262NOTE: This release does not include fixes for the reported events, 18263power-down, and thermal passive cooling issues (coming soon). 18264 18265 3) ASL Compiler: 18266 18267Added additional typechecking for Fields within restricted access 18268Operation Regions. All fields within EC and CMOS regions must be 18269declared with ByteAcc. All fields within SMBus regions must be 18270declared with the BufferAcc access type. 18271 18272Fixed a problem where the listing file output of control methods 18273no longer interleaved the actual AML code with the ASL source 18274code. 18275 18276 18277 18278 18279---------------------------------------- 18280Summary of changes for this label: 11_09_01 18281 182821) ACPI CA Core Subsystem: 18283 18284Implemented ACPI 2.0-defined support for writes to fields with a 18285Buffer, String, or Integer source operand that is smaller than the 18286target field. In these cases, the source operand is zero-extended 18287to fill the target field. 18288 18289Fixed a problem where a Field starting bit offset (within the 18290parent operation region) was calculated incorrectly if the 18291 18292alignment of the field differed from the access width. This 18293affected CreateWordField, CreateDwordField, CreateQwordField, and 18294possibly other fields that use the "AccessAny" keyword. 18295 18296Fixed a problem introduced in the 11_02_01 release where indirect 18297stores through method arguments did not operate correctly. 18298 182992) Linux: 18300 18301Implemented boot-time ACPI table parsing support 18302(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 18303facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 18304legacy BIOS interfaces (e.g. MPS) for the configuration of system 18305processors, memory, and interrupts during setup_arch(). Note that 18306this patch does not include the required architecture-specific 18307changes required to apply this information -- subsequent patches 18308will be posted for both IA32 and IA64 to achieve this. 18309 18310Added low-level sleep support for IA32 platforms, courtesy of Pat 18311Mochel. This allows IA32 systems to transition to/from various 18312sleeping states (e.g. S1, S3), although the lack of a centralized 18313driver model and power-manageable drivers will prevent its 18314(successful) use on most systems. 18315 18316Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 18317submenu, unified IA32 and IA64 options, added new "Boot using ACPI 18318tables" option, etc. 18319 18320Increased the default timeout for the EC driver from 1ms to 10ms 18321(1000 cycles of 10us) to try to address AE_TIME errors during EC 18322transactions. 18323 18324 ---------------------------------------- 18325Summary of changes for this label: 11_02_01 18326 183271) ACPI CA Core Subsystem: 18328 18329ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 18330(QWordAcc keyword). All ACPI 2.0 64-bit support is now 18331implemented. 18332 18333OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 18334changes to support ACPI 2.0 Qword field access. Read/Write 18335PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 18336accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 18337the value parameter for the address space handler interface is now 18338an ACPI_INTEGER. OSL implementations of these interfaces must now 18339handle the case where the Width parameter is 64. 18340 18341Index Fields: Fixed a problem where unaligned bit assembly and 18342disassembly for IndexFields was not supported correctly. 18343 18344Index and Bank Fields: Nested Index and Bank Fields are now 18345supported. During field access, a check is performed to ensure 18346that the value written to an Index or Bank register is not out of 18347the range of the register. The Index (or Bank) register is 18348written before each access to the field data. Future support will 18349include allowing individual IndexFields to be wider than the 18350DataRegister width. 18351 18352Fields: Fixed a problem where the AML interpreter was incorrectly 18353attempting to write beyond the end of a Field/OpRegion. This was 18354a boundary case that occurred when a DWORD field was written to a 18355BYTE access OpRegion, forcing multiple writes and causing the 18356interpreter to write one datum too many. 18357 18358Fields: Fixed a problem with Field/OpRegion access where the 18359starting bit address of a field was incorrectly calculated if the 18360current access type was wider than a byte (WordAcc, DwordAcc, or 18361QwordAcc). 18362 18363Fields: Fixed a problem where forward references to individual 18364FieldUnits (individual Field names within a Field definition) were 18365not resolved during the AML table load. 18366 18367Fields: Fixed a problem where forward references from a Field 18368definition to the parent Operation Region definition were not 18369resolved during the AML table load. 18370 18371Fields: Duplicate FieldUnit names within a scope are now detected 18372during AML table load. 18373 18374Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 18375returned an incorrect name for the root node. 18376 18377Code and Data Size: Code and Data optimizations have permitted new 18378feature development with an actual reduction in the library size. 18379Current core subsystem library sizes are shown below. These are 18380the code and data sizes for the acpica.lib produced by the 18381Microsoft Visual C++ 6.0 compiler, and these values do not include 18382any ACPI driver or OSPM code. The debug version of the code 18383includes the debug output trace mechanism and has a larger code 18384and data size. Note that these values will vary depending on the 18385efficiency of the compiler and the compiler options used during 18386generation. 18387 18388 Previous Release (10_18_01): 18389 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18390 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18391 18392 Current Release: 18393 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 18394 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 18395 18396 2) Linux: 18397 18398Improved /proc processor output (Pavel Machek) Re-added 18399MODULE_LICENSE("GPL") to all modules. 18400 18401 3) ASL Compiler version X2030: 18402 18403Duplicate FieldUnit names within a scope are now detected and 18404flagged as errors. 18405 18406 4) Documentation: 18407 18408Programmer Reference updated to reflect OSL and address space 18409handler interface changes described above. 18410 18411---------------------------------------- 18412Summary of changes for this label: 10_18_01 18413 18414ACPI CA Core Subsystem: 18415 18416Fixed a problem with the internal object reference count mechanism 18417that occasionally caused premature object deletion. This resolves 18418all of the outstanding problem reports where an object is deleted 18419in the middle of an interpreter evaluation. Although this problem 18420only showed up in rather obscure cases, the solution to the 18421problem involved an adjustment of all reference counts involving 18422objects attached to namespace nodes. 18423 18424Fixed a problem with Field support in the interpreter where 18425writing to an aligned field whose length is an exact multiple (2 18426or greater) of the field access granularity would cause an attempt 18427to write beyond the end of the field. 18428 18429The top level AML opcode execution functions within the 18430interpreter have been renamed with a more meaningful and 18431consistent naming convention. The modules exmonad.c and 18432exdyadic.c were eliminated. New modules are exoparg1.c, 18433exoparg2.c, exoparg3.c, and exoparg6.c. 18434 18435Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 18436 18437Fixed a problem where the AML debugger was causing some internal 18438objects to not be deleted during subsystem termination. 18439 18440Fixed a problem with the external AcpiEvaluateObject interface 18441where the subsystem would fault if the named object to be 18442evaluated referred to a constant such as Zero, Ones, etc. 18443 18444Fixed a problem with IndexFields and BankFields where the 18445subsystem would fault if the index, data, or bank registers were 18446not defined in the same scope as the field itself. 18447 18448Added printf format string checking for compilers that support 18449this feature. Corrected more than 50 instances of issues with 18450format specifiers within invocations of ACPI_DEBUG_PRINT 18451throughout the core subsystem code. 18452 18453The ASL "Revision" operator now returns the ACPI support level 18454implemented in the core - the value "2" since the ACPI 2.0 support 18455is more than 50% implemented. 18456 18457Enhanced the output of the AML debugger "dump namespace" command 18458to output in a more human-readable form. 18459 18460Current core subsystem library code sizes are shown below. These 18461 18462are the code and data sizes for the acpica.lib produced by the 18463Microsoft Visual C++ 6.0 compiler, and these values do not include 18464any ACPI driver or OSPM code. The debug version of the code 18465includes the full debug trace mechanism -- leading to a much 18466 18467larger code and data size. Note that these values will vary 18468depending on the efficiency of the compiler and the compiler 18469options used during generation. 18470 18471 Previous Label (09_20_01): 18472 Non-Debug Version: 65K Code, 5K Data, 70K Total 18473 Debug Version: 138K Code, 58K Data, 196K Total 18474 18475 This Label: 18476 18477 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 18478 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 18479 18480Linux: 18481 18482Implemented a "Bad BIOS Blacklist" to track machines that have 18483known ASL/AML problems. 18484 18485Enhanced the /proc interface for the thermal zone driver and added 18486support for _HOT (the critical suspend trip point). The 'info' 18487file now includes threshold/policy information, and allows setting 18488of _SCP (cooling preference) and _TZP (polling frequency) values 18489to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 18490frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 18491preference to the passive/quiet mode (if supported by the ASL). 18492 18493Implemented a workaround for a gcc bug that resuted in an OOPs 18494when loading the control method battery driver. 18495 18496 ---------------------------------------- 18497Summary of changes for this label: 09_20_01 18498 18499 ACPI CA Core Subsystem: 18500 18501The AcpiEnableEvent and AcpiDisableEvent interfaces have been 18502modified to allow individual GPE levels to be flagged as wake- 18503enabled (i.e., these GPEs are to remain enabled when the platform 18504sleeps.) 18505 18506The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 18507support wake-enabled GPEs. This means that upon entering the 18508sleep state, all GPEs that are not wake-enabled are disabled. 18509When leaving the sleep state, these GPEs are re-enabled. 18510 18511A local double-precision divide/modulo module has been added to 18512enhance portability to OS kernels where a 64-bit math library is 18513not available. The new module is "utmath.c". 18514 18515Several optimizations have been made to reduce the use of CPU 18516stack. Originally over 2K, the maximum stack usage is now below 185172K at 1860 bytes (1.82k) 18518 18519Fixed a problem with the AcpiGetFirmwareTable interface where the 18520root table pointer was not mapped into a logical address properly. 18521 18522Fixed a problem where a NULL pointer was being dereferenced in the 18523interpreter code for the ASL Notify operator. 18524 18525Fixed a problem where the use of the ASL Revision operator 18526returned an error. This operator now returns the current version 18527of the ACPI CA core subsystem. 18528 18529Fixed a problem where objects passed as control method parameters 18530to AcpiEvaluateObject were always deleted at method termination. 18531However, these objects may end up being stored into the namespace 18532by the called method. The object reference count mechanism was 18533applied to these objects instead of a force delete. 18534 18535Fixed a problem where static strings or buffers (contained in the 18536AML code) that are declared as package elements within the ASL 18537code could cause a fault because the interpreter would attempt to 18538delete them. These objects are now marked with the "static 18539object" flag to prevent any attempt to delete them. 18540 18541Implemented an interpreter optimization to use operands directly 18542from the state object instead of extracting the operands to local 18543variables. This reduces stack use and code size, and improves 18544performance. 18545 18546The module exxface.c was eliminated as it was an unnecessary extra 18547layer of code. 18548 18549Current core subsystem library code sizes are shown below. These 18550are the code and data sizes for the acpica.lib produced by the 18551Microsoft Visual C++ 6.0 compiler, and these values do not include 18552any ACPI driver or OSPM code. The debug version of the code 18553includes the full debug trace mechanism -- leading to a much 18554larger code and data size. Note that these values will vary 18555depending on the efficiency of the compiler and the compiler 18556options used during generation. 18557 18558 Non-Debug Version: 65K Code, 5K Data, 70K Total 18559(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 18560Total (Previously 195K) 18561 18562Linux: 18563 18564Support for ACPI 2.0 64-bit integers has been added. All ACPI 18565Integer objects are now 64 bits wide 18566 18567All Acpi data types and structures are now in lower case. Only 18568Acpi macros are upper case for differentiation. 18569 18570 Documentation: 18571 18572Changes to the external interfaces as described above. 18573 18574 ---------------------------------------- 18575Summary of changes for this label: 08_31_01 18576 18577 ACPI CA Core Subsystem: 18578 18579A bug with interpreter implementation of the ASL Divide operator 18580was found and fixed. The implicit function return value (not the 18581explicit store operands) was returning the remainder instead of 18582the quotient. This was a longstanding bug and it fixes several 18583known outstanding issues on various platforms. 18584 18585The ACPI_DEBUG_PRINT and function trace entry/exit macros have 18586been further optimized for size. There are 700 invocations of the 18587DEBUG_PRINT macro alone, so each optimization reduces the size of 18588the debug version of the subsystem significantly. 18589 18590A stack trace mechanism has been implemented. The maximum stack 18591usage is about 2K on 32-bit platforms. The debugger command "stat 18592stack" will display the current maximum stack usage. 18593 18594All public symbols and global variables within the subsystem are 18595now prefixed with the string "Acpi". This keeps all of the 18596symbols grouped together in a kernel map, and avoids conflicts 18597with other kernel subsystems. 18598 18599Most of the internal fixed lookup tables have been moved into the 18600code segment via the const operator. 18601 18602Several enhancements have been made to the interpreter to both 18603reduce the code size and improve performance. 18604 18605Current core subsystem library code sizes are shown below. These 18606are the code and data sizes for the acpica.lib produced by the 18607Microsoft Visual C++ 6.0 compiler, and these values do not include 18608any ACPI driver or OSPM code. The debug version of the code 18609includes the full debug trace mechanism which contains over 700 18610invocations of the DEBUG_PRINT macro, 500 function entry macro 18611invocations, and over 900 function exit macro invocations -- 18612leading to a much larger code and data size. Note that these 18613values will vary depending on the efficiency of the compiler and 18614the compiler options used during generation. 18615 18616 Non-Debug Version: 64K Code, 5K Data, 69K Total 18617Debug Version: 137K Code, 58K Data, 195K Total 18618 18619 Linux: 18620 18621Implemented wbinvd() macro, pending a kernel-wide definition. 18622 18623Fixed /proc/acpi/event to handle poll() and short reads. 18624 18625 ASL Compiler, version X2026: 18626 18627Fixed a problem introduced in the previous label where the AML 18628 18629code emitted for package objects produced packages with zero 18630length. 18631 18632 ---------------------------------------- 18633Summary of changes for this label: 08_16_01 18634 18635ACPI CA Core Subsystem: 18636 18637The following ACPI 2.0 ASL operators have been implemented in the 18638AML interpreter (These are already supported by the Intel ASL 18639compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 18640ToBuffer. Support for 64-bit AML constants is implemented in the 18641AML parser, debugger, and disassembler. 18642 18643The internal memory tracking mechanism (leak detection code) has 18644been upgraded to reduce the memory overhead (a separate tracking 18645block is no longer allocated for each memory allocation), and now 18646supports all of the internal object caches. 18647 18648The data structures and code for the internal object caches have 18649been coelesced and optimized so that there is a single cache and 18650memory list data structure and a single group of functions that 18651implement generic cache management. This has reduced the code 18652size in both the debug and release versions of the subsystem. 18653 18654The DEBUG_PRINT macro(s) have been optimized for size and replaced 18655by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 18656different, because it generates a single call to an internal 18657function. This results in a savings of about 90 bytes per 18658invocation, resulting in an overall code and data savings of about 1865916% in the debug version of the subsystem. 18660 18661 Linux: 18662 18663Fixed C3 disk corruption problems and re-enabled C3 on supporting 18664machines. 18665 18666Integrated low-level sleep code by Patrick Mochel. 18667 18668Further tweaked source code Linuxization. 18669 18670Other minor fixes. 18671 18672 ASL Compiler: 18673 18674Support for ACPI 2.0 variable length packages is fixed/completed. 18675 18676Fixed a problem where the optional length parameter for the ACPI 186772.0 ToString operator. 18678 18679Fixed multiple extraneous error messages when a syntax error is 18680detected within the declaration line of a control method. 18681 18682 ---------------------------------------- 18683Summary of changes for this label: 07_17_01 18684 18685ACPI CA Core Subsystem: 18686 18687Added a new interface named AcpiGetFirmwareTable to obtain any 18688ACPI table via the ACPI signature. The interface can be called at 18689any time during kernel initialization, even before the kernel 18690virtual memory manager is initialized and paging is enabled. This 18691allows kernel subsystems to obtain ACPI tables very early, even 18692before the ACPI CA subsystem is initialized. 18693 18694Fixed a problem where Fields defined with the AnyAcc attribute 18695could be resolved to the incorrect address under the following 18696conditions: 1) the field width is larger than 8 bits and 2) the 18697parent operation region is not defined on a DWORD boundary. 18698 18699Fixed a problem where the interpreter is not being locked during 18700namespace initialization (during execution of the _INI control 18701methods), causing an error when an attempt is made to release it 18702later. 18703 18704ACPI 2.0 support in the AML Interpreter has begun and will be 18705ongoing throughout the rest of this year. In this label, The Mod 18706operator is implemented. 18707 18708Added a new data type to contain full PCI addresses named 18709ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 18710and Function values. 18711 18712 Linux: 18713 18714Enhanced the Linux version of the source code to change most 18715capitalized ACPI type names to lowercase. For example, all 18716instances of ACPI_STATUS are changed to acpi_status. This will 18717result in a large diff, but the change is strictly cosmetic and 18718aligns the CA code closer to the Linux coding standard. 18719 18720OSL Interfaces: 18721 18722The interfaces to the PCI configuration space have been changed to 18723add the PCI Segment number and to split the single 32-bit combined 18724DeviceFunction field into two 16-bit fields. This was 18725accomplished by moving the four values that define an address in 18726PCI configuration space (segment, bus, device, and function) to 18727the new ACPI_PCI_ID structure. 18728 18729The changes to the PCI configuration space interfaces led to a 18730reexamination of the complete set of address space access 18731interfaces for PCI, I/O, and Memory. The previously existing 18 18732interfaces have proven difficult to maintain (any small change 18733must be propagated across at least 6 interfaces) and do not easily 18734allow for future expansion to 64 bits if necessary. Also, on some 18735systems, it would not be appropriate to demultiplex the access 18736width (8, 16, 32,or 64) before calling the OSL if the 18737corresponding native OS interfaces contain a similar access width 18738parameter. For these reasons, the 18 address space interfaces 18739have been replaced by these 6 new ones: 18740 18741AcpiOsReadPciConfiguration 18742AcpiOsWritePciConfiguration 18743AcpiOsReadMemory 18744AcpiOsWriteMemory 18745AcpiOsReadPort 18746AcpiOsWritePort 18747 18748Added a new interface named AcpiOsGetRootPointer to allow the OSL 18749to perform the platform and/or OS-specific actions necessary to 18750obtain the ACPI RSDP table pointer. On IA-32 platforms, this 18751interface will simply call down to the CA core to perform the low- 18752memory search for the table. On IA-64, the RSDP is obtained from 18753EFI. Migrating this interface to the OSL allows the CA core to 18754 18755remain OS and platform independent. 18756 18757Added a new interface named AcpiOsSignal to provide a generic 18758"function code and pointer" interface for various miscellaneous 18759signals and notifications that must be made to the host OS. The 18760first such signals are intended to support the ASL Fatal and 18761Breakpoint operators. In the latter case, the AcpiOsBreakpoint 18762interface has been obsoleted. 18763 18764The definition of the AcpiFormatException interface has been 18765changed to simplify its use. The caller no longer must supply a 18766buffer to the call; A pointer to a const string is now returned 18767directly. This allows the call to be easily used in printf 18768statements, etc. since the caller does not have to manage a local 18769buffer. 18770 18771 18772 ASL Compiler, Version X2025: 18773 18774The ACPI 2.0 Switch/Case/Default operators have been implemented 18775and are fully functional. They will work with all ACPI 1.0 18776interpreters, since the operators are simply translated to If/Else 18777pairs. 18778 18779The ACPI 2.0 ElseIf operator is implemented and will also work 18780with 1.0 interpreters, for the same reason. 18781 18782Implemented support for ACPI 2.0 variable-length packages. These 18783packages have a separate opcode, and their size is determined by 18784the interpreter at run-time. 18785 18786Documentation The ACPI CA Programmer Reference has been updated to 18787reflect the new interfaces and changes to existing interfaces. 18788 18789 ------------------------------------------ 18790Summary of changes for this label: 06_15_01 18791 18792 ACPI CA Core Subsystem: 18793 18794Fixed a problem where a DWORD-accessed field within a Buffer 18795object would get its byte address inadvertently rounded down to 18796the nearest DWORD. Buffers are always Byte-accessible. 18797 18798 ASL Compiler, version X2024: 18799 18800Fixed a problem where the Switch() operator would either fault or 18801hang the compiler. Note however, that the AML code for this ACPI 188022.0 operator is not yet implemented. 18803 18804Compiler uses the new AcpiOsGetTimer interface to obtain compile 18805timings. 18806 18807Implementation of the CreateField operator automatically converts 18808a reference to a named field within a resource descriptor from a 18809byte offset to a bit offset if required. 18810 18811Added some missing named fields from the resource descriptor 18812support. These are the names that are automatically created by the 18813compiler to reference fields within a descriptor. They are only 18814valid at compile time and are not passed through to the AML 18815interpreter. 18816 18817Resource descriptor named fields are now typed as Integers and 18818subject to compile-time typechecking when used in expressions. 18819 18820 ------------------------------------------ 18821Summary of changes for this label: 05_18_01 18822 18823 ACPI CA Core Subsystem: 18824 18825Fixed a couple of problems in the Field support code where bits 18826from adjacent fields could be returned along with the proper field 18827bits. Restructured the field support code to improve performance, 18828readability and maintainability. 18829 18830New DEBUG_PRINTP macro automatically inserts the procedure name 18831into the output, saving hundreds of copies of procedure name 18832strings within the source, shrinking the memory footprint of the 18833debug version of the core subsystem. 18834 18835 Source Code Structure: 18836 18837The source code directory tree was restructured to reflect the 18838current organization of the component architecture. Some files 18839and directories have been moved and/or renamed. 18840 18841 Linux: 18842 18843Fixed leaking kacpidpc processes. 18844 18845Fixed queueing event data even when /proc/acpi/event is not 18846opened. 18847 18848 ASL Compiler, version X2020: 18849 18850Memory allocation performance enhancement - over 24X compile time 18851improvement on large ASL files. Parse nodes and namestring 18852buffers are now allocated from a large internal compiler buffer. 18853 18854The temporary .SRC file is deleted unless the "-s" option is 18855specified 18856 18857The "-d" debug output option now sends all output to the .DBG file 18858instead of the console. 18859 18860"External" second parameter is now optional 18861 18862"ElseIf" syntax now properly allows the predicate 18863 18864Last operand to "Load" now recognized as a Target operand 18865 18866Debug object can now be used anywhere as a normal object. 18867 18868ResourceTemplate now returns an object of type BUFFER 18869 18870EISAID now returns an object of type INTEGER 18871 18872"Index" now works with a STRING operand 18873 18874"LoadTable" now accepts optional parameters 18875 18876"ToString" length parameter is now optional 18877 18878"Interrupt (ResourceType," parse error fixed. 18879 18880"Register" with a user-defined region space parse error fixed 18881 18882Escaped backslash at the end of a string ("\\") scan/parse error 18883fixed 18884 18885"Revision" is now an object of type INTEGER. 18886 18887 18888 18889------------------------------------------ 18890Summary of changes for this label: 05_02_01 18891 18892Linux: 18893 18894/proc/acpi/event now blocks properly. 18895 18896Removed /proc/sys/acpi. You can still dump your DSDT from 18897/proc/acpi/dsdt. 18898 18899 ACPI CA Core Subsystem: 18900 18901Fixed a problem introduced in the previous label where some of the 18902"small" resource descriptor types were not recognized. 18903 18904Improved error messages for the case where an ASL Field is outside 18905the range of the parent operation region. 18906 18907 ASL Compiler, version X2018: 18908 18909 18910Added error detection for ASL Fields that extend beyond the length 18911of the parent operation region (only if the length of the region 18912is known at compile time.) This includes fields that have a 18913minimum access width that is smaller than the parent region, and 18914individual field units that are partially or entirely beyond the 18915extent of the parent. 18916 18917 18918 18919------------------------------------------ 18920Summary of changes for this label: 04_27_01 18921 18922 ACPI CA Core Subsystem: 18923 18924Fixed a problem where the namespace mutex could be released at the 18925wrong time during execution of AcpiRemoveAddressSpaceHandler. 18926 18927Added optional thread ID output for debug traces, to simplify 18928debugging of multiple threads. Added context switch notification 18929when the debug code realizes that a different thread is now 18930executing ACPI code. 18931 18932Some additional external data types have been prefixed with the 18933string "ACPI_" for consistency. This may effect existing code. 18934The data types affected are the external callback typedefs - e.g., 18935 18936WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 18937 18938 Linux: 18939 18940Fixed an issue with the OSL semaphore implementation where a 18941thread was waking up with an error from receiving a SIGCHLD 18942signal. 18943 18944Linux version of ACPI CA now uses the system C library for string 18945manipulation routines instead of a local implementation. 18946 18947Cleaned up comments and removed TBDs. 18948 18949 ASL Compiler, version X2017: 18950 18951Enhanced error detection and reporting for all file I/O 18952operations. 18953 18954 Documentation: 18955 18956Programmer Reference updated to version 1.06. 18957 18958 18959 18960------------------------------------------ 18961Summary of changes for this label: 04_13_01 18962 18963 ACPI CA Core Subsystem: 18964 18965Restructured support for BufferFields and RegionFields. 18966BankFields support is now fully operational. All known 32-bit 18967limitations on field sizes have been removed. Both BufferFields 18968and (Operation) RegionFields are now supported by the same field 18969management code. 18970 18971Resource support now supports QWORD address and IO resources. The 1897216/32/64 bit address structures and the Extended IRQ structure 18973have been changed to properly handle Source Resource strings. 18974 18975A ThreadId of -1 is now used to indicate a "mutex not acquired" 18976condition internally and must never be returned by AcpiOsThreadId. 18977This reserved value was changed from 0 since Unix systems allow a 18978thread ID of 0. 18979 18980Linux: 18981 18982Driver code reorganized to enhance portability 18983 18984Added a kernel configuration option to control ACPI_DEBUG 18985 18986Fixed the EC driver to honor _GLK. 18987 18988ASL Compiler, version X2016: 18989 18990Fixed support for the "FixedHw" keyword. Previously, the FixedHw 18991address space was set to 0, not 0x7f as it should be. 18992 18993 ------------------------------------------ 18994Summary of changes for this label: 03_13_01 18995 18996 ACPI CA Core Subsystem: 18997 18998During ACPI initialization, the _SB_._INI method is now run if 18999present. 19000 19001Notify handler fix - notifies are deferred until the parent method 19002completes execution. This fixes the "mutex already acquired" 19003issue seen occasionally. 19004 19005Part of the "implicit conversion" rules in ACPI 2.0 have been 19006found to cause compatibility problems with existing ASL/AML. The 19007convert "result-to-target-type" implementation has been removed 19008for stores to method Args and Locals. Source operand conversion 19009is still fully implemented. Possible changes to ACPI 2.0 19010specification pending. 19011 19012Fix to AcpiRsCalculatePciRoutingTableLength to return correct 19013length. 19014 19015Fix for compiler warnings for 64-bit compiles. 19016 19017 Linux: 19018 19019/proc output aligned for easier parsing. 19020 19021Release-version compile problem fixed. 19022 19023New kernel configuration options documented in Configure.help. 19024 19025IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 19026context" message. 19027 19028 OSPM: 19029 19030Power resource driver integrated with bus manager. 19031 19032Fixed kernel fault during active cooling for thermal zones. 19033 19034Source Code: 19035 19036The source code tree has been restructured. 19037 19038 19039 19040------------------------------------------ 19041Summary of changes for this label: 03_02_01 19042 19043 Linux OS Services Layer (OSL): 19044 19045Major revision of all Linux-specific code. 19046 19047Modularized all ACPI-specific drivers. 19048 19049Added new thermal zone and power resource drivers. 19050 19051Revamped /proc interface (new functionality is under /proc/acpi). 19052 19053New kernel configuration options. 19054 19055 Linux known issues: 19056 19057New kernel configuration options not documented in Configure.help 19058yet. 19059 19060 19061Module dependencies not currently implemented. If used, they 19062should be loaded in this order: busmgr, power, ec, system, 19063processor, battery, ac_adapter, button, thermal. 19064 19065Modules will not load if CONFIG_MODVERSION is set. 19066 19067IBM 600E - entering S5 may reboot instead of shutting down. 19068 19069IBM 600E - Sleep button may generate "Invalid <NULL> context" 19070message. 19071 19072Some systems may fail with "execution mutex already acquired" 19073message. 19074 19075 ACPI CA Core Subsystem: 19076 19077Added a new OSL Interface, AcpiOsGetThreadId. This was required 19078for the deadlock detection code. Defined to return a non-zero, 32- 19079bit thread ID for the currently executing thread. May be a non- 19080zero constant integer on single-thread systems. 19081 19082Implemented deadlock detection for internal subsystem mutexes. We 19083may add conditional compilation for this code (debug only) later. 19084 19085ASL/AML Mutex object semantics are now fully supported. This 19086includes multiple acquires/releases by owner and support for the 19087 19088Mutex SyncLevel parameter. 19089 19090A new "Force Release" mechanism automatically frees all ASL 19091Mutexes that have been acquired but not released when a thread 19092exits the interpreter. This forces conformance to the ACPI spec 19093("All mutexes must be released when an invocation exits") and 19094prevents deadlocked ASL threads. This mechanism can be expanded 19095(later) to monitor other resource acquisitions if OEM ASL code 19096continues to misbehave (which it will). 19097 19098Several new ACPI exception codes have been added for the Mutex 19099support. 19100 19101Recursive method calls are now allowed and supported (the ACPI 19102spec does in fact allow recursive method calls.) The number of 19103recursive calls is subject to the restrictions imposed by the 19104SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 19105parameter. 19106 19107Implemented support for the SyncLevel parameter for control 19108methods (ACPI 2.0 feature) 19109 19110Fixed a deadlock problem when multiple threads attempted to use 19111the interpreter. 19112 19113Fixed a problem where the string length of a String package 19114element was not always set in a package returned from 19115AcpiEvaluateObject. 19116 19117Fixed a problem where the length of a String package element was 19118not always included in the length of the overall package returned 19119from AcpiEvaluateObject. 19120 19121Added external interfaces (Acpi*) to the ACPI debug memory 19122manager. This manager keeps a list of all outstanding 19123allocations, and can therefore detect memory leaks and attempts to 19124free memory blocks more than once. Useful for code such as the 19125power manager, etc. May not be appropriate for device drivers. 19126Performance with the debug code enabled is slow. 19127 19128The ACPI Global Lock is now an optional hardware element. 19129 19130 ASL Compiler Version X2015: 19131 19132Integrated changes to allow the compiler to be generated on 19133multiple platforms. 19134 19135Linux makefile added to generate the compiler on Linux 19136 19137 Source Code: 19138 19139All platform-specific headers have been moved to their own 19140subdirectory, Include/Platform. 19141 19142New source file added, Interpreter/ammutex.c 19143 19144New header file, Include/acstruct.h 19145 19146 Documentation: 19147 19148The programmer reference has been updated for the following new 19149interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 19150 19151 ------------------------------------------ 19152Summary of changes for this label: 02_08_01 19153 19154Core ACPI CA Subsystem: Fixed a problem where an error was 19155incorrectly returned if the return resource buffer was larger than 19156the actual data (in the resource interfaces). 19157 19158References to named objects within packages are resolved to the 19159 19160full pathname string before packages are returned directly (via 19161the AcpiEvaluateObject interface) or indirectly via the resource 19162interfaces. 19163 19164Linux OS Services Layer (OSL): 19165 19166Improved /proc battery interface. 19167 19168 19169Added C-state debugging output and other miscellaneous fixes. 19170 19171ASL Compiler Version X2014: 19172 19173All defined method arguments can now be used as local variables, 19174including the ones that are not actually passed in as parameters. 19175The compiler tracks initialization of the arguments and issues an 19176exception if they are used without prior assignment (just like 19177locals). 19178 19179The -o option now specifies a filename prefix that is used for all 19180output files, including the AML output file. Otherwise, the 19181default behavior is as follows: 1) the AML goes to the file 19182specified in the DSDT. 2) all other output files use the input 19183source filename as the base. 19184 19185 ------------------------------------------ 19186Summary of changes for this label: 01_25_01 19187 19188Core ACPI CA Subsystem: Restructured the implementation of object 19189store support within the interpreter. This includes support for 19190the Store operator as well as any ASL operators that include a 19191target operand. 19192 19193Partially implemented support for Implicit Result-to-Target 19194conversion. This is when a result object is converted on the fly 19195to the type of an existing target object. Completion of this 19196support is pending further analysis of the ACPI specification 19197concerning this matter. 19198 19199CPU-specific code has been removed from the subsystem (hardware 19200directory). 19201 19202New Power Management Timer functions added 19203 19204Linux OS Services Layer (OSL): Moved system state transition code 19205to the core, fixed it, and modified Linux OSL accordingly. 19206 19207Fixed C2 and C3 latency calculations. 19208 19209 19210We no longer use the compilation date for the version message on 19211initialization, but retrieve the version from AcpiGetSystemInfo(). 19212 19213Incorporated for fix Sony VAIO machines. 19214 19215Documentation: The Programmer Reference has been updated and 19216reformatted. 19217 19218 19219ASL Compiler: Version X2013: Fixed a problem where the line 19220numbering and error reporting could get out of sync in the 19221presence of multiple include files. 19222 19223 ------------------------------------------ 19224Summary of changes for this label: 01_15_01 19225 19226Core ACPI CA Subsystem: 19227 19228Implemented support for type conversions in the execution of the 19229ASL Concatenate operator (The second operand is converted to 19230match the type of the first operand before concatenation.) 19231 19232Support for implicit source operand conversion is partially 19233implemented. The ASL source operand types Integer, Buffer, and 19234String are freely interchangeable for most ASL operators and are 19235converted by the interpreter on the fly as required. Implicit 19236Target operand conversion (where the result is converted to the 19237target type before storing) is not yet implemented. 19238 19239Support for 32-bit and 64-bit BCD integers is implemented. 19240 19241Problem fixed where a field read on an aligned field could cause a 19242read past the end of the field. 19243 19244New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 19245does not return a value, but the caller expects one. (The ASL 19246compiler flags this as a warning.) 19247 19248ASL Compiler: 19249 19250Version X2011: 192511. Static typechecking of all operands is implemented. This 19252prevents the use of invalid objects (such as using a Package where 19253an Integer is required) at compile time instead of at interpreter 19254run-time. 192552. The ASL source line is printed with ALL errors and warnings. 192563. Bug fix for source EOF without final linefeed. 192574. Debug option is split into a parse trace and a namespace trace. 192585. Namespace output option (-n) includes initial values for 19259integers and strings. 192606. Parse-only option added for quick syntax checking. 192617. Compiler checks for duplicate ACPI name declarations 19262 19263Version X2012: 192641. Relaxed typechecking to allow interchangeability between 19265strings, integers, and buffers. These types are now converted by 19266the interpreter at runtime. 192672. Compiler reports time taken by each internal subsystem in the 19268debug output file. 19269 19270 19271 ------------------------------------------ 19272Summary of changes for this label: 12_14_00 19273 19274ASL Compiler: 19275 19276This is the first official release of the compiler. Since the 19277compiler requires elements of the Core Subsystem, this label 19278synchronizes everything. 19279 19280------------------------------------------ 19281Summary of changes for this label: 12_08_00 19282 19283 19284Fixed a problem where named references within the ASL definition 19285of both OperationRegions and CreateXXXFields did not work 19286properly. The symptom was an AE_AML_OPERAND_TYPE during 19287initialization of the region/field. This is similar (but not 19288related internally) to the problem that was fixed in the last 19289label. 19290 19291Implemented both 32-bit and 64-bit support for the BCD ASL 19292functions ToBCD and FromBCD. 19293 19294Updated all legal headers to include "2000" in the copyright 19295years. 19296 19297 ------------------------------------------ 19298Summary of changes for this label: 12_01_00 19299 19300Fixed a problem where method invocations within the ASL definition 19301of both OperationRegions and CreateXXXFields did not work 19302properly. The symptom was an AE_AML_OPERAND_TYPE during 19303initialization of the region/field: 19304 19305 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 19306[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 19307(0x3005) 19308 19309Fixed a problem where operators with more than one nested 19310subexpression would fail. The symptoms were varied, by mostly 19311AE_AML_OPERAND_TYPE errors. This was actually a rather serious 19312problem that has gone unnoticed until now. 19313 19314 Subtract (Add (1,2), Multiply (3,4)) 19315 19316Fixed a problem where AcpiGetHandle didn't quite get fixed in the 19317previous build (The prefix part of a relative path was handled 19318incorrectly). 19319 19320Fixed a problem where Operation Region initialization failed if 19321the operation region name was a "namepath" instead of a simple 19322"nameseg". Symptom was an AE_NO_OPERAND error. 19323 19324Fixed a problem where an assignment to a local variable via the 19325indirect RefOf mechanism only worked for the first such 19326assignment. Subsequent assignments were ignored. 19327 19328 ------------------------------------------ 19329Summary of changes for this label: 11_15_00 19330 19331ACPI 2.0 table support with backwards support for ACPI 1.0 and the 193320.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 19333the AML interpreter does NOT have support for the new 2.0 ASL 19334grammar terms at this time. 19335 19336All ACPI hardware access is via the GAS structures in the ACPI 2.0 19337FADT. 19338 19339All physical memory addresses across all platforms are now 64 bits 19340wide. Logical address width remains dependent on the platform 19341(i.e., "void *"). 19342 19343AcpiOsMapMemory interface changed to a 64-bit physical address. 19344 19345The AML interpreter integer size is now 64 bits, as per the ACPI 193462.0 specification. 19347 19348For backwards compatibility with ACPI 1.0, ACPI tables with a 19349revision number less than 2 use 32-bit integers only. 19350 19351Fixed a problem where the evaluation of OpRegion operands did not 19352always resolve them to numbers properly. 19353 19354------------------------------------------ 19355Summary of changes for this label: 10_20_00 19356 19357Fix for CBN_._STA issue. This fix will allow correct access to 19358CBN_ OpRegions when the _STA returns 0x8. 19359 19360Support to convert ACPI constants (Ones, Zeros, One) to actual 19361values before a package object is returned 19362 19363Fix for method call as predicate to if/while construct causing 19364incorrect if/while behavior 19365 19366Fix for Else block package lengths sometimes calculated wrong (if 19367block > 63 bytes) 19368 19369Fix for Processor object length field, was always zero 19370 19371Table load abort if FACP sanity check fails 19372 19373Fix for problem with Scope(name) if name already exists 19374 19375Warning emitted if a named object referenced cannot be found 19376(resolved) during method execution. 19377 19378 19379 19380 19381 19382------------------------------------------ 19383Summary of changes for this label: 9_29_00 19384 19385New table initialization interfaces: AcpiInitializeSubsystem no 19386longer has any parameters AcpiFindRootPointer - Find the RSDP (if 19387necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 19388>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 19389AcpiLoadTables 19390 19391Note: These interface changes require changes to all existing OSDs 19392 19393The PCI_Config default address space handler is always installed 19394at the root namespace object. 19395 19396------------------------------------------- 19397Summary of changes for this label: 09_15_00 19398 19399The new initialization architecture is implemented. New 19400interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 19401AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 19402 19403(Namespace is automatically loaded when a table is loaded) 19404 19405The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1940652 bytes to 32 bytes. There is usually one of these for every 19407namespace object, so the memory savings is significant. 19408 19409Implemented just-in-time evaluation of the CreateField operators. 19410 19411Bug fixes for IA-64 support have been integrated. 19412 19413Additional code review comments have been implemented 19414 19415The so-called "third pass parse" has been replaced by a final walk 19416through the namespace to initialize all operation regions (address 19417spaces) and fields that have not yet been initialized during the 19418execution of the various _INI and REG methods. 19419 19420New file - namespace/nsinit.c 19421 19422------------------------------------------- 19423Summary of changes for this label: 09_01_00 19424 19425Namespace manager data structures have been reworked to change the 19426primary object from a table to a single object. This has 19427resulted in dynamic memory savings of 3X within the namespace and 194282X overall in the ACPI CA subsystem. 19429 19430Fixed problem where the call to AcpiEvFindPciRootBuses was 19431inadvertently left commented out. 19432 19433Reduced the warning count when generating the source with the GCC 19434compiler. 19435 19436Revision numbers added to each module header showing the 19437SourceSafe version of the file. Please refer to this version 19438number when giving us feedback or comments on individual modules. 19439 19440The main object types within the subsystem have been renamed to 19441clarify their purpose: 19442 19443ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 19444ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 19445ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 19446 19447NOTE: no changes to the initialization sequence are included in 19448this label. 19449 19450------------------------------------------- 19451Summary of changes for this label: 08_23_00 19452 19453Fixed problem where TerminateControlMethod was being called 19454multiple times per method 19455 19456Fixed debugger problem where single stepping caused a semaphore to 19457be oversignalled 19458 19459Improved performance through additional parse object caching - 19460added ACPI_EXTENDED_OP type 19461 19462------------------------------------------- 19463Summary of changes for this label: 08_10_00 19464 19465Parser/Interpreter integration: Eliminated the creation of 19466complete parse trees for ACPI tables and control methods. 19467Instead, parse subtrees are created and then deleted as soon as 19468they are processed (Either entered into the namespace or executed 19469by the interpreter). This reduces the use of dynamic kernel 19470memory significantly. (about 10X) 19471 19472Exception codes broken into classes and renumbered. Be sure to 19473recompile all code that includes acexcep.h. Hopefully we won't 19474have to renumber the codes again now that they are split into 19475classes (environment, programmer, AML code, ACPI table, and 19476internal). 19477 19478Fixed some additional alignment issues in the Resource Manager 19479subcomponent 19480 19481Implemented semaphore tracking in the AcpiExec utility, and fixed 19482several places where mutexes/semaphores were being unlocked 19483without a corresponding lock operation. There are no known 19484semaphore or mutex "leaks" at this time. 19485 19486Fixed the case where an ASL Return operator is used to return an 19487unnamed package. 19488 19489------------------------------------------- 19490Summary of changes for this label: 07_28_00 19491 19492Fixed a problem with the way addresses were calculated in 19493AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 19494manifested itself when a Field was created with WordAccess or 19495DwordAccess, but the field unit defined within the Field was less 19496 19497than a Word or Dword. 19498 19499Fixed a problem in AmlDumpOperands() module's loop to pull 19500operands off of the operand stack to display information. The 19501problem manifested itself as a TLB error on 64-bit systems when 19502accessing an operand stack with two or more operands. 19503 19504Fixed a problem with the PCI configuration space handlers where 19505context was getting confused between accesses. This required a 19506change to the generic address space handler and address space 19507setup definitions. Handlers now get both a global handler context 19508(this is the one passed in by the user when executing 19509AcpiInstallAddressSpaceHandler() and a specific region context 19510that is unique to each region (For example, the _ADR, _SEG and 19511_BBN values associated with a specific region). The generic 19512function definitions have changed to the following: 19513 19514typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 19515UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 19516*HandlerContext, // This used to be void *Context void 19517*RegionContext); // This is an additional parameter 19518 19519typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 19520RegionHandle, UINT32 Function, void *HandlerContext, void 19521**RegionContext); // This used to be **ReturnContext 19522 19523------------------------------------------- 19524Summary of changes for this label: 07_21_00 19525 19526Major file consolidation and rename. All files within the 19527interpreter have been renamed as well as most header files. This 19528was done to prevent collisions with existing files in the host 19529OSs -- filenames such as "config.h" and "global.h" seem to be 19530quite common. The VC project files have been updated. All 19531makefiles will require modification. 19532 19533The parser/interpreter integration continues in Phase 5 with the 19534implementation of a complete 2-pass parse (the AML is parsed 19535twice) for each table; This avoids the construction of a huge 19536parse tree and therefore reduces the amount of dynamic memory 19537required by the subsystem. Greater use of the parse object cache 19538means that performance is unaffected. 19539 19540Many comments from the two code reviews have been rolled in. 19541 19542The 64-bit alignment support is complete. 19543 19544------------------------------------------- 19545Summary of changes for this label: 06_30_00 19546 19547With a nod and a tip of the hat to the technology of yesteryear, 19548we've added support in the source code for 80 column output 19549devices. The code is now mostly constrained to 80 columns or 19550less to support environments and editors that 1) cannot display 19551or print more than 80 characters on a single line, and 2) cannot 19552disable line wrapping. 19553 19554A major restructuring of the namespace data structure has been 19555completed. The result is 1) cleaner and more 19556understandable/maintainable code, and 2) a significant reduction 19557in the dynamic memory requirement for each named ACPI object 19558(almost half). 19559 19560------------------------------------------- 19561Summary of changes for this label: 06_23_00 19562 19563Linux support has been added. In order to obtain approval to get 19564the ACPI CA subsystem into the Linux kernel, we've had to make 19565quite a few changes to the base subsystem that will affect all 19566users (all the changes are generic and OS- independent). The 19567effects of these global changes have been somewhat far reaching. 19568Files have been merged and/or renamed and interfaces have been 19569renamed. The major changes are described below. 19570 19571Osd* interfaces renamed to AcpiOs* to eliminate namespace 19572pollution/confusion within our target kernels. All OSD 19573interfaces must be modified to match the new naming convention. 19574 19575Files merged across the subsystem. A number of the smaller source 19576and header files have been merged to reduce the file count and 19577increase the density of the existing files. There are too many 19578to list here. In general, makefiles that call out individual 19579files will require rebuilding. 19580 19581Interpreter files renamed. All interpreter files now have the 19582prefix am* instead of ie* and is*. 19583 19584Header files renamed: The acapi.h file is now acpixf.h. The 19585acpiosd.h file is now acpiosxf.h. We are removing references to 19586the acronym "API" since it is somewhat windowsy. The new name is 19587"external interface" or xface or xf in the filenames.j 19588 19589 19590All manifest constants have been forced to upper case (some were 19591mixed case.) Also, the string "ACPI_" has been prepended to many 19592(not all) of the constants, typedefs, and structs. 19593 19594The globals "DebugLevel" and "DebugLayer" have been renamed 19595"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 19596 19597All other globals within the subsystem are now prefixed with 19598"AcpiGbl_" Internal procedures within the subsystem are now 19599prefixed with "Acpi" (with only a few exceptions). The original 19600two-letter abbreviation for the subcomponent remains after "Acpi" 19601- for example, CmCallocate became AcpiCmCallocate. 19602 19603Added a source code translation/conversion utility. Used to 19604generate the Linux source code, it can be modified to generate 19605other types of source as well. Can also be used to cleanup 19606existing source by removing extraneous spaces and blank lines. 19607Found in tools/acpisrc/* 19608 19609OsdUnMapMemory was renamed to OsdUnmapMemory and then 19610AcpiOsUnmapMemory. (UnMap became Unmap). 19611 19612A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 19613When set to one, this indicates that the caller wants to use the 19614 19615semaphore as a mutex, not a counting semaphore. ACPI CA uses 19616both types. However, implementers of this call may want to use 19617different OS primitives depending on the type of semaphore 19618requested. For example, some operating systems provide separate 19619 19620"mutex" and "semaphore" interfaces - where the mutex interface is 19621much faster because it doesn't have all the overhead of a full 19622semaphore implementation. 19623 19624Fixed a deadlock problem where a method that accesses the PCI 19625address space can block forever if it is the first access to the 19626space. 19627 19628------------------------------------------- 19629Summary of changes for this label: 06_02_00 19630 19631Support for environments that cannot handle unaligned data 19632accesses (e.g. firmware and OS environments devoid of alignment 19633handler technology namely SAL/EFI and the IA-64 Linux kernel) has 19634been added (via configurable macros) in these three areas: - 19635Transfer of data from the raw AML byte stream is done via byte 19636moves instead of word/dword/qword moves. - External objects are 19637aligned within the user buffer, including package elements (sub- 19638objects). - Conversion of name strings to UINT32 Acpi Names is now 19639done byte-wise. 19640 19641The Store operator was modified to mimic Microsoft's 19642implementation when storing to a Buffer Field. 19643 19644Added a check of the BM_STS bit before entering C3. 19645 19646The methods subdirectory has been obsoleted and removed. A new 19647file, cmeval.c subsumes the functionality. 19648 19649A 16-bit (DOS) version of AcpiExec has been developed. The 19650makefile is under the acpiexec directory. 19651