1---------------------------------------- 216 August 2012. Summary of changes for version 20120816: 3 4This release is available at https://www.acpica.org/downloads 5The ACPI 5.0 specification is available at www.acpi.info 6 71) ACPICA Kernel-resident Subsystem: 8 9Removed all use of the deprecated _GTS and _BFS predefined methods. The _GTS 10(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 11deprecated and will probably be removed from the ACPI specification. Windows 12does not invoke them, and reportedly never will. The final nail in the coffin 13is that the ACPI specification states that these methods must be run with 14interrupts off, which is not going to happen in a kernel interpreter. Note: 15Linux has removed all use of the methods also. It was discovered that 16invoking these functions caused failures on some machines, probably because 17they were never tested since Windows does not call them. Affects two external 18interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 19ACPICA BZ 969. 20 21Implemented support for complex bit-packed buffers returned from the _PLD 22(Physical Location of Device) predefined method. Adds a new external 23interface, AcpiDecodePldBuffer that parses the buffer into a more usable C 24structure. Note: C Bitfields cannot be used for this type of predefined 25structure since the memory layout of individual bitfields is not defined by 26the C language. In addition, there are endian concerns where a compiler will 27change the bitfield ordering based on the machine type. The new ACPICA 28interface eliminates these issues, and should be called after _PLD is 29executed. ACPICA BZ 954. 30 31Implemented a change to allow a scope change to root (via "Scope (\)") during 32execution of module-level ASL code (code that is executed at table load 33time.) Lin Ming. 34 35Added the Windows8/Server2012 string for the _OSI method. This change adds a 36new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 2012. 37 38Added header support for the new ACPI tables DBG2 (Debug Port Table Type 2) 39and CSRT (Core System Resource Table). 40 41Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 42names. This simplifies access to the buffers returned by these predefined 43names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 44 45GPE support: Removed an extraneous parameter from the various low-level 46internal GPE functions. Tang Feng. 47 48Removed the linux makefiles from the unix packages. The generate/linux 49makefiles are obsolete and have been removed from the unix tarball release 50packages. The replacement makefiles are under generate/unix, and there is a 51top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 52 53Updates for Unix makefiles: 541) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 552) Update linker flags (move to end of command line) for AcpiExec utility. 56Guan Chao. 57 58Split ACPICA initialization functions to new file, utxfinit.c. Split from 59utxface.c to improve modularity and reduce file size. 60 61Example Code and Data Size: These are the sizes for the OS-independent 62acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 63debug version of the code includes the debug output trace mechanism and has a 64much larger code and data size. 65 66 Previous Release: 67 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 68 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 69 Current Release: 70 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 71 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 72 73 742) iASL Compiler/Disassembler and Tools: 75 76iASL: Fixed a problem with constant folding for fixed-length constant 77expressions. The constant-folding code was not being invoked for constant 78expressions that allow the use of type 3/4/5 opcodes to generate constants 79for expressions such as ByteConstExpr, WordConstExpr, etc. This could result 80in the generation of invalid AML bytecode. ACPICA BZ 970. 81 82iASL: Fixed a generation issue on newer versions of Bison. Newer versions 83apparently automatically emit some of the necessary externals. This change 84handles these versions in order to eliminate generation warnings. 85 86Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 87 88Disassembler: Add support to decode _PLD buffers. The decoded buffer appears 89within comments in the output file. 90 91Debugger: Fixed a regression with the "Threads" command where 92AE_BAD_PARAMETER was always returned. 93 94---------------------------------------- 9511 July 2012. Summary of changes for version 20120711: 96 97This release is available at https://www.acpica.org/downloads The ACPI 5.0 98specification is available at www.acpi.info 99 1001) ACPICA Kernel-resident Subsystem: 101 102Fixed a possible fault in the return package object repair code. Fixes a 103problem that can occur when a lone package object is wrapped with an outer 104package object in order to force conformance to the ACPI specification. Can 105affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, _DLM, 106_CSD, _PSD, _TSD. 107 108Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 109PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 110ARB_DIS bit must be implemented in the host-dependent C3 processor power state 111support. Note, ARB_DIS is obsolete and only applies to older chipsets, both 112Intel and other vendors. (for Intel: ICH4-M and earlier) 113 114This change removes the code to disable/enable bus master arbitration during 115suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register causes 116resume problems on some machines. The change has been in use for over seven 117years within Linux. 118 119Implemented two new external interfaces to support host-directed dynamic ACPI 120table load and unload. They are intended to simplify the host implementation 121of hot-plug support: 122 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 123 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the table. 124See the ACPICA reference for additional details. Adds one new file, 125components/tables/tbxfload.c 126 127Implemented and deployed two new interfaces for errors and warnings that are 128known to be caused by BIOS/firmware issues: 129 AcpiBiosError: Prints "ACPI Firmware Error" message. 130 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 131Deployed these new interfaces in the ACPICA Table Manager code for ACPI table 132and FADT errors. Additional deployment to be completed as appropriate in the 133future. The associated conditional macros are ACPI_BIOS_ERROR and 134ACPI_BIOS_WARNING. See the ACPICA reference for additional details. ACPICA BZ 135843. 136 137Implicit notify support: ensure that no memory allocation occurs within a 138critical region. This fix moves a memory allocation outside of the time that a 139spinlock is held. Fixes issues on systems that do not allow this behavior. 140Jung-uk Kim. 141 142Split exception code utilities and tables into a new file, utilities/utexcep.c 143 144Example Code and Data Size: These are the sizes for the OS-independent 145acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 146version of the code includes the debug output trace mechanism and has a much 147larger code and data size. 148 149 Previous Release: 150 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 151 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 152 Current Release: 153 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 154 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 155 156 1572) iASL Compiler/Disassembler and Tools: 158 159iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead of 1600. Jung-uk Kim. 161 162Debugger: Enhanced the "tables" command to emit additional information about 163the current set of ACPI tables, including the owner ID and flags decode. 164 165Debugger: Reimplemented the "unload" command to use the new 166AcpiUnloadParentTable external interface. This command was disable previously 167due to need for an unload interface. 168 169AcpiHelp: Added a new option to decode ACPICA exception codes. The -e option 170will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 171 172---------------------------------------- 17320 June 2012. Summary of changes for version 20120620: 174 175This release is available at https://www.acpica.org/downloads 176The ACPI 5.0 specification is available at www.acpi.info 177 1781) ACPICA Kernel-resident Subsystem: 179 180Implemented support to expand the "implicit notify" feature to allow multiple 181devices to be notified by a single GPE. This feature automatically generates a 182runtime device notification in the absence of a BIOS-provided GPE control 183method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit notify is 184provided by ACPICA for Windows compatibility, and is a workaround for BIOS AML 185code errors. See the description of the AcpiSetupGpeForWake interface in the 186APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 187 188Changed some comments and internal function names to simplify and ensure 189correctness of the Linux code translation. No functional changes. 190 191Example Code and Data Size: These are the sizes for the OS-independent 192acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 193version of the code includes the debug output trace mechanism and has a much 194larger code and data size. 195 196 Previous Release: 197 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 198 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 199 Current Release: 200 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 201 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 202 203 2042) iASL Compiler/Disassembler and Tools: 205 206Disassembler: Added support to emit short, commented descriptions for the ACPI 207predefined names in order to improve the readability of the disassembled 208output. ACPICA BZ 959. Changes include: 209 1) Emit descriptions for all standard predefined names (_INI, _STA, _PRW, 210etc.) 211 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 212 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, etc.) 213 214AcpiSrc: Fixed several long-standing Linux code translation issues. Argument 215descriptions in function headers are now translated properly to lower case and 216underscores. ACPICA BZ 961. Also fixes translation problems such as these: 217(old -> new) 218 i_aSL -> iASL 219 00-7_f -> 00-7F 220 16_k -> 16K 221 local_fADT -> local_FADT 222 execute_oSI -> execute_OSI 223 224iASL: Fixed a problem where null bytes were inadvertently emitted into some 225listing files. 226 227iASL: Added the existing debug options to the standard help screen. There are 228no longer two different help screens. ACPICA BZ 957. 229 230AcpiHelp: Fixed some typos in the various predefined name descriptions. Also 231expand some of the descriptions where appropriate. 232 233iASL: Fixed the -ot option (display compile times/statistics). Was not working 234properly for standard output; only worked for the debug file case. 235 236---------------------------------------- 23718 May 2012. Summary of changes for version 20120518: 238 239 2401) ACPICA Core Subsystem: 241 242Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is defined 243to block until asynchronous events such as notifies and GPEs have completed. 244Within ACPICA, it is only called before a notify or GPE handler is 245removed/uninstalled. It also may be useful for the host OS within related 246drivers such as the Embedded Controller driver. See the ACPICA reference for 247additional information. ACPICA BZ 868. 248 249ACPI Tables: Added a new error message for a possible overflow failure during 250the conversion of FADT 32-bit legacy register addresses to internal common 64- 251bit GAS structure representation. The GAS has a one-byte "bit length" field, 252thus limiting the register length to 255 bits. ACPICA BZ 953. 253 254Example Code and Data Size: These are the sizes for the OS-independent 255acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 256version of the code includes the debug output trace mechanism and has a much 257larger code and data size. 258 259 Previous Release: 260 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 261 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 262 Current Release: 263 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 264 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 265 266 2672) iASL Compiler/Disassembler and Tools: 268 269iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL macro. 270This keyword was added late in the ACPI 5.0 release cycle and was not 271implemented until now. 272 273Disassembler: Added support for Operation Region externals. Adds missing 274support for operation regions that are defined in another table, and 275referenced locally via a Field or BankField ASL operator. Now generates the 276correct External statement. 277 278Disassembler: Several additional fixes for the External() statement generation 279related to some ASL operators. Also, order the External() statements 280alphabetically in the disassembler output. Fixes the External() generation for 281the Create* field, Alias, and Scope operators: 282 1) Create* buffer field operators - fix type mismatch warning on disassembly 283 2) Alias - implement missing External support 284 3) Scope - fix to make sure all necessary externals are emitted. 285 286iASL: Improved pathname support. For include files, merge the prefix pathname 287with the file pathname and eliminate unnecessary components. Convert 288backslashes in all pathnames to forward slashes, for readability. Include file 289pathname changes affect both #include and Include() type operators. 290 291iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the end 292of a valid line by inserting a newline and then returning the EOF during the 293next call to GetNextLine. Prevents the line from being ignored due to EOF 294condition. 295 296iASL: Implemented some changes to enhance the IDE support (-vi option.) Error 297and Warning messages are now correctly recognized for both the source code 298browser and the global error and warning counts. 299 300---------------------------------------- 30120 April 2012. Summary of changes for version 20120420: 302 303 3041) ACPICA Core Subsystem: 305 306Implemented support for multiple notify handlers. This change adds support to 307allow multiple system and device notify handlers on Device, Thermal Zone, and 308Processor objects. This can simplify the host OS notification implementation. 309Also re-worked and restructured the entire notify support code to simplify 310handler installation, handler removal, notify event queuing, and notify 311dispatch to handler(s). Note: there can still only be two global notify 312handlers - one for system notifies and one for device notifies. There are no 313changes to the existing handler install/remove interfaces. Lin Ming, Bob 314Moore, Rafael Wysocki. 315 316Fixed a regression in the package repair code where the object reference 317count was calculated incorrectly. Regression was introduced in the commit 318"Support to add Package wrappers". 319 320Fixed a couple possible memory leaks in the AML parser, in the error recovery 321path. Jesper Juhl, Lin Ming. 322 323Example Code and Data Size: These are the sizes for the OS-independent 324acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 325debug version of the code includes the debug output trace mechanism and has a 326much larger code and data size. 327 328 Previous Release: 329 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 330 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 331 Current Release: 332 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 333 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 334 335 3362) iASL Compiler/Disassembler and Tools: 337 338iASL: Fixed a problem with the resource descriptor support where the length 339of the StartDependentFn and StartDependentFnNoPrio descriptors were not 340included in cumulative descriptor offset, resulting in incorrect values for 341resource tags within resource descriptors appearing after a StartDependent* 342descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 343 344iASL and Preprocessor: Implemented full support for the #line directive to 345correctly track original source file line numbers through the .i preprocessor 346output file - for error and warning messages. 347 348iASL: Expand the allowable byte constants for address space IDs. Previously, 349the allowable range was 0x80-0xFF (user-defined spaces), now the range is 3500x0A-0xFF to allow for custom and new IDs without changing the compiler. 351 352iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 353 354iASL: Add option to completely disable the preprocessor (-Pn). 355 356iASL: Now emit all error/warning messages to standard error (stderr) by 357default (instead of the previous stdout). 358 359ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). Update 360for resource descriptor offset fix above. Update/cleanup error output 361routines. Enable and send iASL errors/warnings to an error logfile 362(error.txt). Send all other iASL output to a logfile (compiler.txt). Fixed 363several extraneous "unrecognized operator" messages. 364 365---------------------------------------- 36620 March 2012. Summary of changes for version 20120320: 367 368 3691) ACPICA Core Subsystem: 370 371Enhanced the sleep/wake interfaces to optionally execute the _GTS method 372(Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently 373does not execute these methods, and therefore these methods are often 374untested. It has been seen on some systems where the execution of these 375methods causes errors and also prevents the machine from entering S5. It is 376therefore suggested that host operating systems do not execute these methods 377by default. In the future, perhaps these methods can be optionally executed 378based on the age of the system and/or what is the newest version of Windows 379that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState and 380AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 381Ming. 382 383Fixed a problem where the length of the local/common FADT was set too early. 384The local FADT table length cannot be set to the common length until the 385original length has been examined. There is code that checks the table length 386and sets various fields appropriately. This can affect older machines with 387early FADT versions. For example, this can cause inadvertent writes to the 388CST_CNT register. Julian Anastasov. 389 390Fixed a mapping issue related to a physical table override. Use the deferred 391mapping mechanism for tables loaded via the physical override OSL interface. 392This allows for early mapping before the virtual memory manager is available. 393Thomas Renninger, Bob Moore. 394 395Enhanced the automatic return-object repair code: Repair a common problem with 396predefined methods that are defined to return a variable-length Package of 397sub-objects. If there is only one sub-object, some BIOS ASL code mistakenly 398simply returns the single object instead of a Package with one sub-object. 399This new support will repair this error by wrapping a Package object around 400the original object, creating the correct and expected Package with one sub- 401object. Names that can be repaired in this manner include: _ALR, _CSD, _HPX, 402_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 939. 403 404Changed the exception code returned for invalid ACPI paths passed as 405parameters to external interfaces such as AcpiEvaluateObject. Was 406AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 407 408Example Code and Data Size: These are the sizes for the OS-independent 409acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 410version of the code includes the debug output trace mechanism and has a much 411larger code and data size. 412 413 Previous Release: 414 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 415 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 416 Current Release: 417 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 418 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 419 420 4212) iASL Compiler/Disassembler and Tools: 422 423iASL: Added the infrastructure and initial implementation of a integrated C- 424like preprocessor. This will simplify BIOS development process by eliminating 425the need for a separate preprocessing step during builds. On Windows, it also 426eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 427features including full #define() macro support are still under development. 428These preprocessor directives are supported: 429 #define 430 #elif 431 #else 432 #endif 433 #error 434 #if 435 #ifdef 436 #ifndef 437 #include 438 #pragma message 439 #undef 440 #warning 441In addition, these new command line options are supported: 442 -D <symbol> Define symbol for preprocessor use 443 -li Create preprocessed output file (*.i) 444 -P Preprocess only and create preprocessor output file (*.i) 445 446Table Compiler: Fixed a problem where the equals operator within an expression 447did not work properly. 448 449Updated iASL to use the current versions of Bison/Flex. Updated the Windows 450project file to invoke these tools from the standard location. ACPICA BZ 904. 451Versions supported: 452 Flex for Windows: V2.5.4 453 Bison for Windows: V2.4.1 454 455---------------------------------------- 45615 February 2012. Summary of changes for version 20120215: 457 458 4591) ACPICA Core Subsystem: 460 461There have been some major changes to the sleep/wake support code, as 462described below (a - e). 463 464a) The AcpiLeaveSleepState has been split into two interfaces, similar to 465AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 466AcpiLeaveSleepStatePrep. This allows the host to perform actions between the 467time the _BFS method is called and the _WAK method is called. NOTE: all hosts 468must update their wake/resume code or else sleep/wake will not work properly. 469Rafael Wysocki. 470 471b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the _WAK 472method. Some machines require that the GPEs are enabled before the _WAK method 473is executed. Thomas Renninger. 474 475c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit. 476Some BIOS code assumes that WAK_STS will be cleared on resume and use it to 477determine whether the system is rebooting or resuming. Matthew Garrett. 478 479d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From Sleep) to 480match the ACPI specification requirement. Rafael Wysocki. 481 482e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 483registers within the V5 FADT. This support adds two new files: 484hardware/hwesleep.c implements the support for the new registers. Moved all 485sleep/wake external interfaces to hardware/hwxfsleep.c. 486 487 488Added a new OSL interface for ACPI table overrides, 489AcpiOsPhysicalTableOverride. This interface allows the host to override a 490table via a physical address, instead of the logical address required by 491AcpiOsTableOverride. This simplifies the host implementation. Initial 492implementation by Thomas Renninger. The ACPICA implementation creates a single 493shared function for table overrides that attempts both a logical and a 494physical override. 495 496Expanded the OSL memory read/write interfaces to 64-bit data 497(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 498transfer support for GAS register structures passed to AcpiRead and AcpiWrite. 499 500Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a custom 501build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) model. 502See the ACPICA reference for details. ACPICA BZ 942. This option removes about 50310% of the code and 5% of the static data, and the following hardware ACPI 504features become unavailable: 505 PM Event and Control registers 506 SCI interrupt (and handler) 507 Fixed Events 508 General Purpose Events (GPEs) 509 Global Lock 510 ACPI PM timer 511 FACS table (Waking vectors and Global Lock) 512 513Updated the unix tarball directory structure to match the ACPICA git source 514tree. This ensures that the generic unix makefiles work properly (in 515generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867. 516 517Updated the return value of the _REV predefined method to integer value 5 to 518reflect ACPI 5.0 support. 519 520Moved the external ACPI PM timer interface prototypes to the public acpixf.h 521file where they belong. 522 523Example Code and Data Size: These are the sizes for the OS-independent 524acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 525version of the code includes the debug output trace mechanism and has a much 526larger code and data size. 527 528 Previous Release: 529 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 530 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 531 Current Release: 532 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 533 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 534 535 5362) iASL Compiler/Disassembler and Tools: 537 538Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 539descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 540incorrectly displayed. 541 542AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 543specification. 544 545---------------------------------------- 54611 January 2012. Summary of changes for version 20120111: 547 548 5491) ACPICA Core Subsystem: 550 551Implemented a new mechanism to allow host device drivers to check for address 552range conflicts with ACPI Operation Regions. Both SystemMemory and SystemIO 553address spaces are supported. A new external interface, AcpiCheckAddressRange, 554allows drivers to check an address range against the ACPI namespace. See the 555ACPICA reference for additional details. Adds one new file, 556utilities/utaddress.c. Lin Ming, Bob Moore. 557 558Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control and 559Status registers, update the ACPI 5.0 flags, and update internal data 560structures to handle an FADT larger than 256 bytes. The size of the ACPI 5.0 561FADT is 268 bytes. 562 563Updated all ACPICA copyrights and signons to 2012. Added the 2012 copyright to 564all module headers and signons, including the standard Linux header. This 565affects virtually every file in the ACPICA core subsystem, iASL compiler, and 566all ACPICA utilities. 567 568Example Code and Data Size: These are the sizes for the OS-independent 569acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 570version of the code includes the debug output trace mechanism and has a much 571larger code and data size. 572 573 Previous Release: 574 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 575 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 576 Current Release: 577 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 578 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 579 580 5812) iASL Compiler/Disassembler and Tools: 582 583Disassembler: fixed a problem with the automatic resource tag generation 584support. Fixes a problem where the resource tags are inadvertently not 585constructed if the table being disassembled contains external references to 586control methods. Moved the actual construction of the tags to after the final 587namespace is constructed (after 2nd parse is invoked due to external control 588method references.) ACPICA BZ 941. 589 590Table Compiler: Make all "generic" operators caseless. These are the operators 591like UINT8, String, etc. Making these caseless improves ease-of-use. ACPICA BZ 592934. 593 594---------------------------------------- 59523 November 2011. Summary of changes for version 20111123: 596 5970) ACPI 5.0 Support: 598 599This release contains full support for the ACPI 5.0 specification, as 600summarized below. 601 602Reduced Hardware Support: 603------------------------- 604 605This support allows for ACPI systems without the usual ACPI hardware. This 606support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA will 607not attempt to initialize or use any of the usual ACPI hardware. Note, when 608this flag is set, all of the following ACPI hardware is assumed to be not 609present and is not initialized or accessed: 610 611 General Purpose Events (GPEs) 612 Fixed Events (PM1a/PM1b and PM Control) 613 Power Management Timer and Console Buttons (power/sleep) 614 Real-time Clock Alarm 615 Global Lock 616 System Control Interrupt (SCI) 617 The FACS is assumed to be non-existent 618 619ACPI Tables: 620------------ 621 622All new tables and updates to existing tables are fully supported in the 623ACPICA headers (for use by device drivers), the disassembler, and the iASL 624Data Table Compiler. ACPI 5.0 defines these new tables: 625 626 BGRT /* Boot Graphics Resource Table */ 627 DRTM /* Dynamic Root of Trust for Measurement table */ 628 FPDT /* Firmware Performance Data Table */ 629 GTDT /* Generic Timer Description Table */ 630 MPST /* Memory Power State Table */ 631 PCCT /* Platform Communications Channel Table */ 632 PMTT /* Platform Memory Topology Table */ 633 RASF /* RAS Feature table */ 634 635Operation Regions/SpaceIDs: 636--------------------------- 637 638All new operation regions are fully supported by the iASL compiler, the 639disassembler, and the ACPICA runtime code (for dispatch to region handlers.) 640The new operation region Space IDs are: 641 642 GeneralPurposeIo 643 GenericSerialBus 644 645Resource Descriptors: 646--------------------- 647 648All new ASL resource descriptors are fully supported by the iASL compiler, the 649ASL/AML disassembler, and the ACPICA runtime Resource Manager code (including 650all new predefined resource tags). New descriptors are: 651 652 FixedDma 653 GpioIo 654 GpioInt 655 I2cSerialBus 656 SpiSerialBus 657 UartSerialBus 658 659ASL/AML Operators, New and Modified: 660------------------------------------ 661 662One new operator is added, the Connection operator, which is used to associate 663a GeneralPurposeIo or GenericSerialBus resource descriptor with individual 664field objects within an operation region. Several new protocols are associated 665with the AccessAs operator. All are fully supported by the iASL compiler, 666disassembler, and runtime ACPICA AML interpreter: 667 668 Connection // Declare Field Connection attributes 669 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 670 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol 671 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 672 RawDataBuffer // Data type for Vendor Data fields 673 674Predefined ASL/AML Objects: 675--------------------------- 676 677All new predefined objects/control-methods are supported by the iASL compiler 678and the ACPICA runtime validation/repair (arguments and return values.) New 679predefined names include the following: 680 681Standard Predefined Names (Objects or Control Methods): 682 _AEI, _CLS, _CPC, _CWS, _DEP, 683 _DLM, _EVT, _GCP, _CRT, _GWS, 684 _HRV, _PRE, _PSE, _SRT, _SUB. 685 686Resource Tags (Names used to access individual fields within resource 687descriptors): 688 _DBT, _DPL, _DRS, _END, _FLC, 689 _IOR, _LIN, _MOD, _PAR, _PHA, 690 _PIN, _PPI, _POL, _RXL, _SLV, 691 _SPE, _STB, _TXL, _VEN. 692 693ACPICA External Interfaces: 694--------------------------- 695 696Several new interfaces have been defined for use by ACPI-related device 697drivers and other host OS services: 698 699AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS to 700acquire and release AML mutexes that are defined in the DSDT/SSDT tables 701provided by the BIOS. They are intended to be used in conjunction with the 702ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 703mutual exclusion with the AML code/interpreter. 704 705AcpiGetEventResources: Returns the (formatted) resource descriptors as defined 706by the ACPI 5.0 _AEI object (ACPI Event Information). This object provides 707resource descriptors associated with hardware-reduced platform events, similar 708to the AcpiGetCurrentResources interface. 709 710Operation Region Handlers: For General Purpose IO and Generic Serial Bus 711operation regions, information about the Connection() object and any optional 712length information is passed to the region handler within the Context 713parameter. 714 715AcpiBufferToResource: This interface converts a raw AML buffer containing a 716resource template or resource descriptor to the ACPI_RESOURCE internal format 717suitable for use by device drivers. Can be used by an operation region handler 718to convert the Connection() buffer object into a ACPI_RESOURCE. 719 720Miscellaneous/Tools/TestSuites: 721------------------------------- 722 723Support for extended _HID names (Four alpha characters instead of three). 724Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 725Support for ACPI 5.0 features in the ASLTS test suite. 726Fully updated documentation (ACPICA and iASL reference documents.) 727 728ACPI Table Definition Language: 729------------------------------- 730 731Support for this language was implemented and released as a subsystem of the 732iASL compiler in 2010. (See the iASL compiler User Guide.) 733 734 735Non-ACPI 5.0 changes for this release: 736-------------------------------------- 737 7381) ACPICA Core Subsystem: 739 740Fix a problem with operation region declarations where a failure can occur if 741the region name and an argument that evaluates to an object (such as the 742region address) are in different namespace scopes. Lin Ming, ACPICA BZ 937. 743 744Do not abort an ACPI table load if an invalid space ID is found within. This 745will be caught later if the offending method is executed. ACPICA BZ 925. 746 747Fixed an issue with the FFixedHW space ID where the ID was not always 748recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 749 750Fixed a problem with the 32-bit generation of the unix-specific OSL 751(osunixxf.c). Lin Ming, ACPICA BZ 936. 752 753Several changes made to enable generation with the GCC 4.6 compiler. ACPICA BZ 754935. 755 756New error messages: Unsupported I/O requests (not 8/16/32 bit), and Index/Bank 757field registers out-of-range. 758 7592) iASL Compiler/Disassembler and Tools: 760 761iASL: Implemented the __PATH__ operator, which returns the full pathname of 762the current source file. 763 764AcpiHelp: Automatically display expanded keyword information for all ASL 765operators. 766 767Debugger: Add "Template" command to disassemble/dump resource template 768buffers. 769 770Added a new master script to generate and execute the ASLTS test suite. 771Automatically handles 32- and 64-bit generation. See tests/aslts.sh 772 773iASL: Fix problem with listing generation during processing of the Switch() 774operator where AML listing was disabled until the entire Switch block was 775completed. 776 777iASL: Improve support for semicolon statement terminators. Fix "invalid 778character" message for some cases when the semicolon is used. Semicolons are 779now allowed after every <Term> grammar element. ACPICA BZ 927. 780 781iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 923. 782 783Disassembler: Fix problem with disassembly of the DataTableRegion operator 784where an inadvertent "Unhandled deferred opcode" message could be generated. 785 7863) Example Code and Data Size 787 788These are the sizes for the OS-independent acpica.lib produced by the 789Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 790includes the debug output trace mechanism and has a much larger code and data 791size. 792 793 Previous Release: 794 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 795 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 796 Current Release: 797 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 798 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 799 800---------------------------------------- 80122 September 2011. Summary of changes for version 20110922: 802 8030) ACPI 5.0 News: 804 805Support for ACPI 5.0 in ACPICA has been underway for several months and will 806be released at the same time that ACPI 5.0 is officially released. 807 808The ACPI 5.0 specification is on track for release in the next few months. 809 8101) ACPICA Core Subsystem: 811 812Fixed a problem where the maximum sleep time for the Sleep() operator was 813intended to be limited to two seconds, but was inadvertently limited to 20 814seconds instead. 815 816Linux and Unix makefiles: Added header file dependencies to ensure correct 817generation of ACPICA core code and utilities. Also simplified the makefiles 818considerably through the use of the vpath variable to specify search paths. 819ACPICA BZ 924. 820 8212) iASL Compiler/Disassembler and Tools: 822 823iASL: Implemented support to check the access length for all fields created to 824access named Resource Descriptor fields. For example, if a resource field is 825defined to be two bits, a warning is issued if a CreateXxxxField() is used 826with an incorrect bit length. This is implemented for all current resource 827descriptor names. ACPICA BZ 930. 828 829Disassembler: Fixed a byte ordering problem with the output of 24-bit and 56- 830bit integers. 831 832iASL: Fixed a couple of issues associated with variable-length package 833objects. 1) properly handle constants like One, Ones, Zero -- do not make a 834VAR_PACKAGE when these are used as a package length. 2) Allow the VAR_PACKAGE 835opcode (in addition to PACKAGE) when validating object types for predefined 836names. 837 838iASL: Emit statistics for all output files (instead of just the ASL input and 839AML output). Includes listings, hex files, etc. 840 841iASL: Added -G option to the table compiler to allow the compilation of custom 842ACPI tables. The only part of a table that is required is the standard 36-byte 843ACPI header. 844 845AcpiXtract: Ported to the standard ACPICA environment (with ACPICA headers), 846which also adds correct 64-bit support. Also, now all output filenames are 847completely lower case. 848 849AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 850loading table files. A warning is issued for any such tables. The only 851exception is an FADT. This also fixes a possible fault when attempting to load 852non-AML tables. ACPICA BZ 932. 853 854AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a 855missing table terminator could cause a fault when using the -p option. 856 857AcpiSrc: Fixed a possible divide-by-zero fault when generating file 858statistics. 859 8603) Example Code and Data Size 861 862These are the sizes for the OS-independent acpica.lib produced by the 863Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 864includes the debug output trace mechanism and has a much larger code and data 865size. 866 867 Previous Release (VC 9.0): 868 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 869 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 870 Current Release (VC 9.0): 871 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 872 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 873 874 875---------------------------------------- 87623 June 2011. Summary of changes for version 20110623: 877 8781) ACPI CA Core Subsystem: 879 880Updated the predefined name repair mechanism to not attempt repair of a _TSS 881return object if a _PSS object is present. We can only sort the _TSS return 882package if there is no _PSS within the same scope. This is because if _PSS is 883present, the ACPI specification dictates that the _TSS Power Dissipation field 884is to be ignored, and therefore some BIOSs leave garbage values in the _TSS 885Power field(s). In this case, it is best to just return the _TSS package as- 886is. Reported by, and fixed with assistance from Fenghua Yu. 887 888Added an option to globally disable the control method return value validation 889and repair. This runtime option can be used to disable return value repair if 890this is causing a problem on a particular machine. Also added an option to 891AcpiExec (-dr) to set this disable flag. 892 893All makefiles and project files: Major changes to improve generation of ACPICA 894tools. ACPICA BZ 912: 895 Reduce default optimization levels to improve compatibility 896 For Linux, add strict-aliasing=0 for gcc 4 897 Cleanup and simplify use of command line defines 898 Cleanup multithread library support 899 Improve usage messages 900 901Linux-specific header: update handling of THREAD_ID and pthread. For the 32- 902bit case, improve casting to eliminate possible warnings, especially with the 903acpica tools. 904 905Example Code and Data Size: These are the sizes for the OS-independent 906acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 907version of the code includes the debug output trace mechanism and has a much 908larger code and data size. 909 910 Previous Release (VC 9.0): 911 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 912 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 913 Current Release (VC 9.0): 914 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 915 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 916 9172) iASL Compiler/Disassembler and Tools: 918 919With this release, a new utility named "acpihelp" has been added to the ACPICA 920package. This utility summarizes the ACPI specification chapters for the ASL 921and AML languages. It generates under Linux/Unix as well as Windows, and 922provides the following functionality: 923 Find/display ASL operator(s) -- with description and syntax. 924 Find/display ASL keyword(s) -- with exact spelling and descriptions. 925 Find/display ACPI predefined name(s) -- with description, number 926 of arguments, and the return value data type. 927 Find/display AML opcode name(s) -- with opcode, arguments, and grammar. 928 Decode/display AML opcode -- with opcode name, arguments, and grammar. 929 930Service Layers: Make multi-thread support configurable. Conditionally compile 931the multi-thread support so that threading libraries will not be linked if not 932necessary. The only tool that requires multi-thread support is AcpiExec. 933 934iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of 935Bison appear to want the interface to yyerror to be a const char * (or at 936least this is a problem when generating iASL on some systems.) ACPICA BZ 923 937Pierre Lejeune. 938 939Tools: Fix for systems where O_BINARY is not defined. Only used for Windows 940versions of the tools. 941 942---------------------------------------- 94327 May 2011. Summary of changes for version 20110527: 944 9451) ACPI CA Core Subsystem: 946 947ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 948signature. Now, only allow SSDT, OEMx, and a null signature. History: 949 1) Originally, we checked the table signature for "SSDT" or "PSDT". 950 (PSDT is now obsolete.) 951 2) We added support for OEMx tables, signature "OEM" plus a fourth 952 "don't care" character. 953 3) Valid tables were encountered with a null signature, so we just 954 gave up on validating the signature, (05/2008). 955 4) We encountered non-AML tables such as the MADT, which caused 956 interpreter errors and kernel faults. So now, we once again allow 957 only SSDT, OEMx, and now, also a null signature. (05/2011). 958 959Added the missing _TDL predefined name to the global name list in order to 960enable validation. Affects both the core ACPICA code and the iASL compiler. 961 962Example Code and Data Size: These are the sizes for the OS-independent 963acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 964version of the code includes the debug output trace mechanism and has a much 965larger code and data size. 966 967 Previous Release (VC 9.0): 968 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 969 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 970 Current Release (VC 9.0): 971 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 972 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 973 9742) iASL Compiler/Disassembler and Tools: 975 976Debugger/AcpiExec: Implemented support for "complex" method arguments on the 977debugger command line. This adds support beyond simple integers -- including 978Strings, Buffers, and Packages. Includes support for nested packages. 979Increased the default command line buffer size to accommodate these arguments. 980See the ACPICA reference for details and syntax. ACPICA BZ 917. 981 982Debugger/AcpiExec: Implemented support for "default" method arguments for the 983Execute/Debug command. Now, the debugger will always invoke a control method 984with the required number of arguments -- even if the command line specifies 985none or insufficient arguments. It uses default integer values for any missing 986arguments. Also fixes a bug where only six method arguments maximum were 987supported instead of the required seven. 988 989Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 990also return status in order to prevent buffer overruns. See the ACPICA 991reference for details and syntax. ACPICA BZ 921 992 993iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 994makefiles to simplify support for the two different but similar parser 995generators, bison and yacc. 996 997Updated the generic unix makefile for gcc 4. The default gcc version is now 998expected to be 4 or greater, since options specific to gcc 4 are used. 999 1000---------------------------------------- 100113 April 2011. Summary of changes for version 20110413: 1002 10031) ACPI CA Core Subsystem: 1004 1005Implemented support to execute a so-called "orphan" _REG method under the EC 1006device. This change will force the execution of a _REG method underneath the 1007EC 1008device even if there is no corresponding operation region of type 1009EmbeddedControl. Fixes a problem seen on some machines and apparently is 1010compatible with Windows behavior. ACPICA BZ 875. 1011 1012Added more predefined methods that are eligible for automatic NULL package 1013element removal. This change adds another group of predefined names to the 1014list 1015of names that can be repaired by having NULL package elements dynamically 1016removed. This group are those methods that return a single variable-length 1017package containing simple data types such as integers, buffers, strings. This 1018includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 1019_Sx, 1020and _TZD. ACPICA BZ 914. 1021 1022Split and segregated all internal global lock functions to a new file, 1023evglock.c. 1024 1025Updated internal address SpaceID for DataTable regions. Moved this internal 1026space 1027id in preparation for ACPI 5.0 changes that will include some new space IDs. 1028This 1029change should not affect user/host code. 1030 1031Example Code and Data Size: These are the sizes for the OS-independent 1032acpica.lib 1033produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 1034the code includes the debug output trace mechanism and has a much larger code 1035and 1036data size. 1037 1038 Previous Release (VC 9.0): 1039 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 1040 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 1041 Current Release (VC 9.0): 1042 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 1043 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 1044 10452) iASL Compiler/Disassembler and Tools: 1046 1047iASL/DTC: Major update for new grammar features. Allow generic data types in 1048custom ACPI tables. Field names are now optional. Any line can be split to 1049multiple lines using the continuation char (\). Large buffers now use line- 1050continuation character(s) and no colon on the continuation lines. See the 1051grammar 1052update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 1053 1054iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 1055Since the parser stuffs a "zero" as the return value for these statements (due 1056to 1057the underlying AML grammar), they were seen as "return with value" by the iASL 1058semantic checking. They are now seen correctly as "null" return statements. 1059 1060iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 1061check for each _REG to ensure that there is in fact a corresponding operation 1062region declaration in the same scope. If not, the _REG method is not very 1063useful 1064since it probably won't be executed. ACPICA BZ 915. 1065 1066iASL/DTC: Finish support for expression evaluation. Added a new expression 1067parser 1068that implements c-style operator precedence and parenthesization. ACPICA 1069bugzilla 1070908. 1071 1072Disassembler/DTC: Remove support for () and <> style comments in data tables. 1073Now 1074that DTC has full expression support, we don't want to have comment strings 1075that 1076start with a parentheses or a less-than symbol. Now, only the standard /* and 1077// 1078comments are supported, as well as the bracket [] comments. 1079 1080AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 1081"unusual" 1082headers in the acpidump file. Update the header validation to support these 1083tables. Problem introduced in previous AcpiXtract version in the change to 1084support "wrong checksum" error messages emitted by acpidump utility. 1085 1086iASL: Add a * option to generate all template files (as a synonym for ALL) as 1087in 1088"iasl -T *" or "iasl -T ALL". 1089 1090iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 1091abort the compiler on "fatal" errors, simply should abort the current compile. 1092This allows multiple compiles with a single (possibly wildcard) compiler 1093invocation. 1094 1095---------------------------------------- 109616 March 2011. Summary of changes for version 20110316: 1097 10981) ACPI CA Core Subsystem: 1099 1100Fixed a problem caused by a _PRW method appearing at the namespace root scope 1101during the setup of wake GPEs. A fault could occur if a _PRW directly under 1102the 1103root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 1104 1105Implemented support for "spurious" Global Lock interrupts. On some systems, a 1106global lock interrupt can occur without the pending flag being set. Upon a GL 1107interrupt, we now ensure that a thread is actually waiting for the lock before 1108signaling GL availability. Rafael Wysocki, Bob Moore. 1109 1110Example Code and Data Size: These are the sizes for the OS-independent 1111acpica.lib 1112produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 1113the code includes the debug output trace mechanism and has a much larger code 1114and 1115data size. 1116 1117 Previous Release (VC 9.0): 1118 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1119 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1120 Current Release (VC 9.0): 1121 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 1122 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 1123 11242) iASL Compiler/Disassembler and Tools: 1125 1126Implemented full support for the "SLIC" ACPI table. Includes support in the 1127header files, disassembler, table compiler, and template generator. Bob Moore, 1128Lin Ming. 1129 1130AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 1131Apparently some or all versions of acpidump will occasionally emit a comment 1132like 1133"Wrong checksum", etc., into the dump file. This was causing problems for 1134AcpiXtract. ACPICA BZ 905. 1135 1136iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 1137ACPICA BZ 913. 1138 1139AcpiExec: Update installation of operation region handlers. Install one 1140handler 1141for a user-defined address space. This is used by the ASL test suite (ASLTS). 1142 1143---------------------------------------- 114411 February 2011. Summary of changes for version 20110211: 1145 11461) ACPI CA Core Subsystem: 1147 1148Added a mechanism to defer _REG methods for some early-installed handlers. 1149Most user handlers should be installed before call to AcpiEnableSubsystem. 1150However, Event handlers and region handlers should be installed after 1151AcpiInitializeObjects. Override handlers for the "default" regions should be 1152installed early, however. This change executes all _REG methods for the 1153default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 1154chicken/egg issues between them. ACPICA BZ 848. 1155 1156Implemented an optimization for GPE detection. This optimization will simply 1157ignore GPE registers that contain no enabled GPEs -- there is no need to 1158read the register since this information is available internally. This 1159becomes more important on machines with a large GPE space. ACPICA bugzilla 1160884. Lin Ming. Suggestion from Joe Liu. 1161 1162Removed all use of the highly unreliable FADT revision field. The revision 1163number in the FADT has been found to be completely unreliable and cannot be 1164trusted. Only the actual table length can be used to infer the version. This 1165change updates the ACPICA core and the disassembler so that both no longer 1166even look at the FADT version and instead depend solely upon the FADT 1167length. 1168 1169Fix an unresolved name issue for the no-debug and no-error-message source 1170generation cases. The _AcpiModuleName was left undefined in these cases, but 1171it is actually needed as a parameter to some interfaces. Define 1172_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 1173 1174Split several large files (makefiles and project files updated) 1175 utglobal.c -> utdecode.c 1176 dbcomds.c -> dbmethod.c dbnames.c 1177 dsopcode.c -> dsargs.c dscontrol.c 1178 dsload.c -> dsload2.c 1179 aslanalyze.c -> aslbtypes.c aslwalks.c 1180 1181Example Code and Data Size: These are the sizes for the OS-independent 1182acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1183debug version of the code includes the debug output trace mechanism and has 1184a much larger code and data size. 1185 1186 Previous Release (VC 9.0): 1187 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1188 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1189 Current Release (VC 9.0): 1190 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1191 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1192 11932) iASL Compiler/Disassembler and Tools: 1194 1195iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 1196These are useful C-style macros with the standard definitions. ACPICA 1197bugzilla 898. 1198 1199iASL/DTC: Added support for integer expressions and labels. Support for full 1200expressions for all integer fields in all ACPI tables. Support for labels in 1201"generic" portions of tables such as UEFI. See the iASL reference manual. 1202 1203Debugger: Added a command to display the status of global handlers. The 1204"handlers" command will display op region, fixed event, and miscellaneous 1205global handlers. installation status -- and for op regions, whether default 1206or user-installed handler will be used. 1207 1208iASL: Warn if reserved method incorrectly returns a value. Many predefined 1209names are defined such that they do not return a value. If implemented as a 1210method, issue a warning if such a name explicitly returns a value. ACPICA 1211Bugzilla 855. 1212 1213iASL: Added detection of GPE method name conflicts. Detects a conflict where 1214there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 1215example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 1216 1217iASL/DTC: Fixed a couple input scanner issues with comments and line 1218numbers. Comment remover could get confused and miss a comment ending. Fixed 1219a problem with line counter maintenance. 1220 1221iASL/DTC: Reduced the severity of some errors from fatal to error. There is 1222no need to abort on simple errors within a field definition. 1223 1224Debugger: Simplified the output of the help command. All help output now in 1225a single screen, instead of help subcommands. ACPICA Bugzilla 897. 1226 1227---------------------------------------- 122812 January 2011. Summary of changes for version 20110112: 1229 12301) ACPI CA Core Subsystem: 1231 1232Fixed a race condition between method execution and namespace walks that can 1233possibly cause a fault. The problem was apparently introduced in version 123420100528 as a result of a performance optimization that reduces the number of 1235namespace walks upon method exit by using the delete_namespace_subtree 1236function instead of the delete_namespace_by_owner function used previously. 1237Bug is a missing namespace lock in the delete_namespace_subtree function. 1238dana.myers@oracle.com 1239 1240Fixed several issues and a possible fault with the automatic "serialized" 1241method support. History: This support changes a method to "serialized" on the 1242fly if the method generates an AE_ALREADY_EXISTS error, indicating the 1243possibility that it cannot handle reentrancy. This fix repairs a couple of 1244issues seen in the field, especially on machines with many cores: 1245 1246 1) Delete method children only upon the exit of the last thread, 1247 so as to not delete objects out from under other running threads 1248 (and possibly causing a fault.) 1249 2) Set the "serialized" bit for the method only upon the exit of the 1250 Last thread, so as to not cause deadlock when running threads 1251 attempt to exit. 1252 3) Cleanup the use of the AML "MethodFlags" and internal method flags 1253 so that there is no longer any confusion between the two. 1254 1255 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 1256 1257Debugger: Now lock the namespace for duration of a namespace dump. Prevents 1258issues if the namespace is changing dynamically underneath the debugger. 1259Especially affects temporary namespace nodes, since the debugger displays 1260these also. 1261 1262Updated the ordering of include files. The ACPICA headers should appear 1263before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 1264any necessary compiler-specific defines, etc. Affects the ACPI-related tools 1265and utilities. 1266 1267Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 1268to all module headers and signons, including the Linux header. This affects 1269virtually every file in the ACPICA core subsystem, iASL compiler, and all 1270utilities. 1271 1272Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 1273project files for VC++ 6.0 are now obsolete. New project files can be found 1274under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 1275details. 1276 1277Example Code and Data Size: These are the sizes for the OS-independent 1278acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1279debug version of the code includes the debug output trace mechanism and has a 1280much larger code and data size. 1281 1282 Previous Release (VC 6.0): 1283 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 1284 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 1285 Current Release (VC 9.0): 1286 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 1287 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 1288 12892) iASL Compiler/Disassembler and Tools: 1290 1291iASL: Added generic data types to the Data Table compiler. Add "generic" data 1292types such as UINT32, String, Unicode, etc., to simplify the generation of 1293platform-defined tables such as UEFI. Lin Ming. 1294 1295iASL: Added listing support for the Data Table Compiler. Adds listing support 1296(-l) to display actual binary output for each line of input code. 1297 1298---------------------------------------- 129909 December 2010. Summary of changes for version 20101209: 1300 13011) ACPI CA Core Subsystem: 1302 1303Completed the major overhaul of the GPE support code that was begun in July 13042010. Major features include: removal of _PRW execution in ACPICA (host 1305executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 1306changes to existing interfaces, simplification of GPE handler operation, and 1307a handful of new interfaces: 1308 1309 AcpiUpdateAllGpes 1310 AcpiFinishGpe 1311 AcpiSetupGpeForWake 1312 AcpiSetGpeWakeMask 1313 One new file, evxfgpe.c to consolidate all external GPE interfaces. 1314 1315See the ACPICA Programmer Reference for full details and programming 1316information. See the new section 4.4 "General Purpose Event (GPE) Support" 1317for a full overview, and section 8.7 "ACPI General Purpose Event Management" 1318for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 1319Bob Moore, Rafael Wysocki. 1320 1321Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 1322GPE Notify". This feature will automatically issue a Notify(2) on a device 1323when a Wake GPE is received if there is no corresponding GPE method or 1324handler. ACPICA BZ 870. 1325 1326Fixed a problem with the Scope() operator during table parse and load phase. 1327During load phase (table load or method execution), the scope operator should 1328not enter the target into the namespace. Instead, it should open a new scope 1329at the target location. Linux BZ 19462, ACPICA BZ 882. 1330 1331Example Code and Data Size: These are the sizes for the OS-independent 1332acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1333debug version of the code includes the debug output trace mechanism and has a 1334much larger code and data size. 1335 1336 Previous Release: 1337 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 1338 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 1339 Current Release: 1340 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1341 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1342 13432) iASL Compiler/Disassembler and Tools: 1344 1345iASL: Relax the alphanumeric restriction on _CID strings. These strings are 1346"bus-specific" per the ACPI specification, and therefore any characters are 1347acceptable. The only checks that can be performed are for a null string and 1348perhaps for a leading asterisk. ACPICA BZ 886. 1349 1350iASL: Fixed a problem where a syntax error that caused a premature EOF 1351condition on the source file emitted a very confusing error message. The 1352premature EOF is now detected correctly. ACPICA BZ 891. 1353 1354Disassembler: Decode the AccessSize within a Generic Address Structure (byte 1355access, word access, etc.) Note, this field does not allow arbitrary bit 1356access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 1357 1358New: AcpiNames utility - Example namespace dump utility. Shows an example of 1359ACPICA configuration for a minimal namespace dump utility. Uses table and 1360namespace managers, but no AML interpreter. Does not add any functionality 1361over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 1362partition and configure ACPICA. ACPICA BZ 883. 1363 1364AML Debugger: Increased the debugger buffer size for method return objects. 1365Was 4K, increased to 16K. Also enhanced error messages for debugger method 1366execution, including the buffer overflow case. 1367 1368---------------------------------------- 136913 October 2010. Summary of changes for version 20101013: 1370 13711) ACPI CA Core Subsystem: 1372 1373Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 1374clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 1375HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 1376 1377Changed the type of the predefined namespace object _TZ from ThermalZone to 1378Device. This was found to be confusing to the host software that processes 1379the various thermal zones, since _TZ is not really a ThermalZone. However, a 1380Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 1381Zhang. 1382 1383Added Windows Vista SP2 to the list of supported _OSI strings. The actual 1384string is "Windows 2006 SP2". 1385 1386Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 1387code automatically repairs _HID-related strings, this type of code is no 1388longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 1389 1390Example Code and Data Size: These are the sizes for the OS-independent 1391acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1392debug version of the code includes the debug output trace mechanism and has a 1393much larger code and data size. 1394 1395 Previous Release: 1396 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1397 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1398 Current Release: 1399 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1400 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1401 14022) iASL Compiler/Disassembler and Tools: 1403 1404iASL: Implemented additional compile-time validation for _HID strings. The 1405non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 1406the string must be exactly seven or eight characters. For both _HID and _CID 1407strings, all characters must be alphanumeric. ACPICA BZ 874. 1408 1409iASL: Allow certain "null" resource descriptors. Some BIOS code creates 1410descriptors that are mostly or all zeros, with the expectation that they will 1411be filled in at runtime. iASL now allows this as long as there is a "resource 1412tag" (name) associated with the descriptor, which gives the ASL a handle 1413needed to modify the descriptor. ACPICA BZ 873. 1414 1415Added single-thread support to the generic Unix application OSL. Primarily 1416for iASL support, this change removes the use of semaphores in the single- 1417threaded ACPICA tools/applications - increasing performance. The 1418_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 1419option. ACPICA BZ 879. 1420 1421AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 1422for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 1423 1424iASL: Moved all compiler messages to a new file, aslmessages.h. 1425 1426---------------------------------------- 142715 September 2010. Summary of changes for version 20100915: 1428 14291) ACPI CA Core Subsystem: 1430 1431Removed the AcpiOsDerivePciId OSL interface. The various host implementations 1432of this function were not OS-dependent and are now obsolete and can be 1433removed from all host OSLs. This function has been replaced by 1434AcpiHwDerivePciId, which is now part of the ACPICA core code. 1435AcpiHwDerivePciId has been implemented without recursion. Adds one new 1436module, hwpci.c. ACPICA BZ 857. 1437 1438Implemented a dynamic repair for _HID and _CID strings. The following 1439problems are now repaired at runtime: 1) Remove a leading asterisk in the 1440string, and 2) the entire string is uppercased. Both repairs are in 1441accordance with the ACPI specification and will simplify host driver code. 1442ACPICA BZ 871. 1443 1444The ACPI_THREAD_ID type is no longer configurable, internally it is now 1445always UINT64. This simplifies the ACPICA code, especially any printf output. 1446UINT64 is the only common data type for all thread_id types across all 1447operating systems. It is now up to the host OSL to cast the native thread_id 1448type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 1449Lin Ming, Bob Moore. 1450 1451Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 1452keyword is not standard across compilers, and this type allows inline to be 1453configured on a per-compiler basis. Lin Ming. 1454 1455Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 1456Added an extern for this boolean in acpixf.h. Some hosts utilize this value 1457during suspend/restore operations. ACPICA BZ 869. 1458 1459All code that implements error/warning messages with the "ACPI:" prefix has 1460been moved to a new module, utxferror.c. 1461 1462The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 1463is used. ACPICA BZ 829. Lin Ming, Bob Moore. 1464 1465Example Code and Data Size: These are the sizes for the OS-independent 1466acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1467debug version of the code includes the debug output trace mechanism and has a 1468much larger code and data size. 1469 1470 Previous Release: 1471 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 1472 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 1473 Current Release: 1474 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 1475 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 1476 14772) iASL Compiler/Disassembler and Tools: 1478 1479iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 1480This keeps the output files free of random error messages that may originate 1481from within the namespace/interpreter code. Used this opportunity to merge 1482all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 1483866. Lin Ming, Bob Moore. 1484 1485Tools: update some printfs for ansi warnings on size_t. Handle width change 1486of size_t on 32-bit versus 64-bit generations. Lin Ming. 1487 1488---------------------------------------- 148906 August 2010. Summary of changes for version 20100806: 1490 14911) ACPI CA Core Subsystem: 1492 1493Designed and implemented a new host interface to the _OSI support code. This 1494will allow the host to dynamically add or remove multiple _OSI strings, as 1495well as install an optional handler that is called for each _OSI invocation. 1496Also added a new AML debugger command, 'osi' to display and modify the global 1497_OSI string table, and test support in the AcpiExec utility. See the ACPICA 1498reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 1499New Functions: 1500 AcpiInstallInterface - Add an _OSI string. 1501 AcpiRemoveInterface - Delete an _OSI string. 1502 AcpiInstallInterfaceHandler - Install optional _OSI handler. 1503Obsolete Functions: 1504 AcpiOsValidateInterface - no longer used. 1505New Files: 1506 source/components/utilities/utosi.c 1507 1508Re-introduced the support to enable multi-byte transfers for Embedded 1509Controller (EC) operation regions. A reported problem was found to be a bug 1510in the host OS, not in the multi-byte support. Previously, the maximum data 1511size passed to the EC operation region handler was a single byte. There are 1512often EC Fields larger than one byte that need to be transferred, and it is 1513useful for the EC driver to lock these as a single transaction. This change 1514enables single transfers larger than 8 bits. This effectively changes the 1515access to the EC space from ByteAcc to AnyAcc, and will probably require 1516changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 1517transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 1518 1519Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 1520prototype in acpiosxf.h had the output value pointer as a (void *). 1521It should be a (UINT64 *). This may affect some host OSL code. 1522 1523Fixed a couple problems with the recently modified Linux makefiles for iASL 1524and AcpiExec. These new makefiles place the generated object files in the 1525local directory so that there can be no collisions between the files that are 1526shared between them that are compiled with different options. 1527 1528Example Code and Data Size: These are the sizes for the OS-independent 1529acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1530debug version of the code includes the debug output trace mechanism and has a 1531much larger code and data size. 1532 1533 Previous Release: 1534 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1535 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1536 Current Release: 1537 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 1538 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 1539 15402) iASL Compiler/Disassembler and Tools: 1541 1542iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 1543namespace from and disassemble an entire group of AML files. Useful for 1544loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 1545disassembling with one simple command. ACPICA BZ 865. Lin Ming. 1546 1547iASL: Allow multiple invocations of -e option. This change allows multiple 1548uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 1549Lin Ming. 1550 1551---------------------------------------- 155202 July 2010. Summary of changes for version 20100702: 1553 15541) ACPI CA Core Subsystem: 1555 1556Implemented several updates to the recently added GPE reference count 1557support. The model for "wake" GPEs is changing to give the host OS complete 1558control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 1559methods, since the host already must execute them. Also, additional changes 1560were made to help ensure that the reference counts are kept in proper 1561synchronization with reality. Rafael J. Wysocki. 1562 15631) Ensure that GPEs are not enabled twice during initialization. 15642) Ensure that GPE enable masks stay in sync with the reference count. 15653) Do not inadvertently enable GPEs when writing GPE registers. 15664) Remove the internal wake reference counter and add new AcpiGpeWakeup 1567interface. This interface will set or clear individual GPEs for wakeup. 15685) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 1569are now used for "runtime" GPEs only. 1570 1571Changed the behavior of the GPE install/remove handler interfaces. The GPE is 1572no longer disabled during this process, as it was found to cause problems on 1573some machines. Rafael J. Wysocki. 1574 1575Reverted a change introduced in version 20100528 to enable Embedded 1576Controller multi-byte transfers. This change was found to cause problems with 1577Index Fields and possibly Bank Fields. It will be reintroduced when these 1578problems have been resolved. 1579 1580Fixed a problem with references to Alias objects within Package Objects. A 1581reference to an Alias within the definition of a Package was not always 1582resolved properly. Aliases to objects like Processors, Thermal zones, etc. 1583were resolved to the actual object instead of a reference to the object as it 1584should be. Package objects are only allowed to contain integer, string, 1585buffer, package, and reference objects. Redhat bugzilla 608648. 1586 1587Example Code and Data Size: These are the sizes for the OS-independent 1588acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1589debug version of the code includes the debug output trace mechanism and has a 1590much larger code and data size. 1591 1592 Previous Release: 1593 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1594 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1595 Current Release: 1596 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1597 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 1598 15992) iASL Compiler/Disassembler and Tools: 1600 1601iASL: Implemented a new compiler subsystem to allow definition and 1602compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 1603are called "ACPI Data Tables", and the new compiler is the "Data Table 1604Compiler". This compiler is intended to simplify the existing error-prone 1605process of creating these tables for the BIOS, as well as allowing the 1606disassembly, modification, recompilation, and override of existing ACPI data 1607tables. See the iASL User Guide for detailed information. 1608 1609iASL: Implemented a new Template Generator option in support of the new Data 1610Table Compiler. This option will create examples of all known ACPI tables 1611that can be used as the basis for table development. See the iASL 1612documentation and the -T option. 1613 1614Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 1615Descriptor Table). 1616 1617Updated the Linux makefiles for iASL and AcpiExec to place the generated 1618object files in the local directory so that there can be no collisions 1619between the shared files between them that are generated with different 1620options. 1621 1622Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 1623the #define __APPLE__ to enable this support. 1624 1625---------------------------------------- 162628 May 2010. Summary of changes for version 20100528: 1627 1628Note: The ACPI 4.0a specification was released on April 5, 2010 and is 1629available at www.acpi.info. This is primarily an errata release. 1630 16311) ACPI CA Core Subsystem: 1632 1633Undefined ACPI tables: We are looking for the definitions for the following 1634ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 1635 1636Implemented support to enable multi-byte transfers for Embedded Controller 1637(EC) operation regions. Previously, the maximum data size passed to the EC 1638operation region handler was a single byte. There are often EC Fields larger 1639than one byte that need to be transferred, and it is useful for the EC driver 1640to lock these as a single transaction. This change enables single transfers 1641larger than 8 bits. This effectively changes the access to the EC space from 1642ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 1643Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 1644transfers. Alexey Starikovskiy, Lin Ming 1645 1646Implemented a performance enhancement for namespace search and access. This 1647change enhances the performance of namespace searches and walks by adding a 1648backpointer to the parent in each namespace node. On large namespaces, this 1649change can improve overall ACPI performance by up to 9X. Adding a pointer to 1650each namespace node increases the overall size of the internal namespace by 1651about 5%, since each namespace entry usually consists of both a namespace 1652node and an ACPI operand object. However, this is the first growth of the 1653namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 1654 1655Implemented a performance optimization that reduces the number of namespace 1656walks. On control method exit, only walk the namespace if the method is known 1657to have created namespace objects outside of its local scope. Previously, the 1658entire namespace was traversed on each control method exit. This change can 1659improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 1660 1661Added support to truncate I/O addresses to 16 bits for Windows compatibility. 1662Some ASL code has been seen in the field that inadvertently has bits set 1663above bit 15. This feature is optional and is enabled if the BIOS requests 1664any Windows OSI strings. It can also be enabled by the host OS. Matthew 1665Garrett, Bob Moore. 1666 1667Added support to limit the maximum time for the ASL Sleep() operator. To 1668prevent accidental deep sleeps, limit the maximum time that Sleep() will 1669actually sleep. Configurable, the default maximum is two seconds. ACPICA 1670bugzilla 854. 1671 1672Added run-time validation support for the _WDG and_WED Microsoft predefined 1673methods. These objects are defined by "Windows Instrumentation", and are not 1674part of the ACPI spec. ACPICA BZ 860. 1675 1676Expanded all statistic counters used during namespace and device 1677initialization from 16 to 32 bits in order to support very large namespaces. 1678 1679Replaced all instances of %d in printf format specifiers with %u since nearly 1680all integers in ACPICA are unsigned. 1681 1682Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 1683as AE_NO_HANDLER. 1684 1685Example Code and Data Size: These are the sizes for the OS-independent 1686acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1687debug version of the code includes the debug output trace mechanism and has a 1688much larger code and data size. 1689 1690 Previous Release: 1691 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1692 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1693 Current Release: 1694 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 1695 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 1696 16972) iASL Compiler/Disassembler and Tools: 1698 1699iASL: Added compiler support for the _WDG and_WED Microsoft predefined 1700methods. These objects are defined by "Windows Instrumentation", and are not 1701part of the ACPI spec. ACPICA BZ 860. 1702 1703AcpiExec: added option to disable the memory tracking mechanism. The -dt 1704option will disable the tracking mechanism, which improves performance 1705considerably. 1706 1707AcpiExec: Restructured the command line options into -d (disable) and -e 1708(enable) options. 1709 1710---------------------------------------- 171128 April 2010. Summary of changes for version 20100428: 1712 17131) ACPI CA Core Subsystem: 1714 1715Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 1716including FADT-based and GPE Block Devices, execute any _PRW methods in the 1717new table, and process any _Lxx/_Exx GPE methods in the new table. Any 1718runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 1719immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 1720Devices. Provides compatibility with other ACPI implementations. Two new 1721files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 1722 1723Fixed a regression introduced in version 20100331 within the table manager 1724where initial table loading could fail. This was introduced in the fix for 1725AcpiReallocateRootTable. Also, renamed some of fields in the table manager 1726data structures to clarify their meaning and use. 1727 1728Fixed a possible allocation overrun during internal object copy in 1729AcpiUtCopySimpleObject. The original code did not correctly handle the case 1730where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 1731 1732Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 1733possible access beyond end-of-allocation. Also, now fully validate descriptor 1734(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 1735 1736Example Code and Data Size: These are the sizes for the OS-independent 1737acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1738debug version of the code includes the debug output trace mechanism and has a 1739much larger code and data size. 1740 1741 Previous Release: 1742 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1743 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1744 Current Release: 1745 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 1746 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 1747 17482) iASL Compiler/Disassembler and Tools: 1749 1750iASL: Implemented Min/Max/Len/Gran validation for address resource 1751descriptors. This change implements validation for the address fields that 1752are common to all address-type resource descriptors. These checks are 1753implemented: Checks for valid Min/Max, length within the Min/Max window, 1754valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 1755table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 1756and aslrestype2.c files into five new files. ACPICA BZ 840. 1757 1758iASL: Added support for the _Wxx predefined names. This support was missing 1759and these names were not recognized by the compiler as valid predefined 1760names. ACPICA BZ 851. 1761 1762iASL: Added an error for all predefined names that are defined to return no 1763value and thus must be implemented as Control Methods. These include all of 1764the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 1765names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 1766 1767iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 1768ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 1769dynamically loaded via the Load() operator. Also cleaned up output for the - 1770ta and -tc options. ACPICA BZ 853. 1771 1772Tests: Added a new file with examples of extended iASL error checking. 1773Demonstrates the advanced error checking ability of the iASL compiler. 1774Available at tests/misc/badcode.asl. 1775 1776---------------------------------------- 177731 March 2010. Summary of changes for version 20100331: 1778 17791) ACPI CA Core Subsystem: 1780 1781Completed a major update for the GPE support in order to improve support for 1782shared GPEs and to simplify both host OS and ACPICA code. Added a reference 1783count mechanism to support shared GPEs that require multiple device drivers. 1784Several external interfaces have changed. One external interface has been 1785removed. One new external interface was added. Most of the GPE external 1786interfaces now use the GPE spinlock instead of the events mutex (and the 1787Flags parameter for many GPE interfaces has been removed.) See the updated 1788ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 1789Wysocki. ACPICA BZ 831. 1790 1791Changed: 1792 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 1793Removed: 1794 AcpiSetGpeType 1795New: 1796 AcpiSetGpe 1797 1798Implemented write support for DataTable operation regions. These regions are 1799defined via the DataTableRegion() operator. Previously, only read support was 1800implemented. The ACPI specification allows DataTableRegions to be read/write, 1801however. 1802 1803Implemented a new subsystem option to force a copy of the DSDT to local 1804memory. Optionally copy the entire DSDT to local memory (instead of simply 1805mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 1806the original DSDT, creating the need for this option. Default is FALSE, do 1807not copy the DSDT. 1808 1809Implemented detection of a corrupted or replaced DSDT. This change adds 1810support to detect a DSDT that has been corrupted and/or replaced from outside 1811the OS (by firmware). This is typically catastrophic for the system, but has 1812been seen on some machines. Once this problem has been detected, the DSDT 1813copy option can be enabled via system configuration. Lin Ming, Bob Moore. 1814 1815Fixed two problems with AcpiReallocateRootTable during the root table copy. 1816When copying the root table to the new allocation, the length used was 1817incorrect. The new size was used instead of the current table size, meaning 1818too much data was copied. Also, the count of available slots for ACPI tables 1819was not set correctly. Alexey Starikovskiy, Bob Moore. 1820 1821Example Code and Data Size: These are the sizes for the OS-independent 1822acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1823debug version of the code includes the debug output trace mechanism and has a 1824much larger code and data size. 1825 1826 Previous Release: 1827 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1828 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1829 Current Release: 1830 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 1831 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 1832 18332) iASL Compiler/Disassembler and Tools: 1834 1835iASL: Implement limited typechecking for values returned from predefined 1836control methods. The type of any returned static (unnamed) object is now 1837validated. For example, Return(1). ACPICA BZ 786. 1838 1839iASL: Fixed a predefined name object verification regression. Fixes a problem 1840introduced in version 20100304. An error is incorrectly generated if a 1841predefined name is declared as a static named object with a value defined 1842using the keywords "Zero", "One", or "Ones". Lin Ming. 1843 1844iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 1845reducing the requested registry access rights. ACPICA BZ 842. 1846 1847Disassembler: fixed a possible fault when generating External() statements. 1848Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 1849(carat). Fixes a string length allocation calculation. Lin Ming. 1850 1851---------------------------------------- 185204 March 2010. Summary of changes for version 20100304: 1853 18541) ACPI CA Core Subsystem: 1855 1856Fixed a possible problem with the AML Mutex handling function 1857AcpiExReleaseMutex where the function could fault under the very rare 1858condition when the interpreter has blocked, the interpreter lock is released, 1859the interpreter is then reentered via the same thread, and attempts to 1860acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 1861Ming. 1862 1863Implemented additional configuration support for the AML "Debug Object". 1864Output from the debug object can now be enabled via a global variable, 1865AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 1866This debug output is now available in the release version of ACPICA instead 1867of just the debug version. Also, the entire debug output module can now be 1868configured out of the ACPICA build if desired. One new file added, 1869executer/exdebug.c. Lin Ming, Bob Moore. 1870 1871Added header support for the ACPI MCHI table (Management Controller Host 1872Interface Table). This table was added in ACPI 4.0, but the defining document 1873has only recently become available. 1874 1875Standardized output of integer values for ACPICA warnings/errors. Always use 18760x prefix for hex output, always use %u for unsigned integer decimal output. 1877Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 1878invocations.) These invocations were converted from the original 1879ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 1880 1881Example Code and Data Size: These are the sizes for the OS-independent 1882acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1883debug version of the code includes the debug output trace mechanism and has a 1884much larger code and data size. 1885 1886 Previous Release: 1887 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1888 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1889 Current Release: 1890 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 1891 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 1892 18932) iASL Compiler/Disassembler and Tools: 1894 1895iASL: Implemented typechecking support for static (non-control method) 1896predefined named objects that are declared with the Name() operator. For 1897example, the type of this object is now validated to be of type Integer: 1898Name(_BBN, 1). This change migrates the compiler to using the core predefined 1899name table instead of maintaining a local version. Added a new file, 1900aslpredef.c. ACPICA BZ 832. 1901 1902Disassembler: Added support for the ACPI 4.0 MCHI table. 1903 1904---------------------------------------- 190521 January 2010. Summary of changes for version 20100121: 1906 19071) ACPI CA Core Subsystem: 1908 1909Added the 2010 copyright to all module headers and signons. This affects 1910virtually every file in the ACPICA core subsystem, the iASL compiler, the 1911tools/utilities, and the test suites. 1912 1913Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 1914invocations of the _STA method. In the case where a specific _HID is 1915requested, do not run _STA until a _HID match is found. This eliminates 1916potentially dozens of _STA calls during a search for a particular device/HID, 1917which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 1918 1919Implemented an additional repair for predefined method return values. Attempt 1920to repair unexpected NULL elements within returned Package objects. Create an 1921Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 1922ACPICA BZ 818. Lin Ming, Bob Moore. 1923 1924Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 1925code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 192664-bit AML integers). It is now obsolete and this change removes it from the 1927ACPICA code base, replaced by UINT64. The original typedef has been retained 1928for now for compatibility with existing device driver code. ACPICA BZ 824. 1929 1930Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 1931the parse tree object. 1932 1933Added additional warning options for the gcc-4 generation. Updated the source 1934accordingly. This includes some code restructuring to eliminate unreachable 1935code, elimination of some gotos, elimination of unused return values, some 1936additional casting, and removal of redundant declarations. 1937 1938Example Code and Data Size: These are the sizes for the OS-independent 1939acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1940debug version of the code includes the debug output trace mechanism and has a 1941much larger code and data size. 1942 1943 Previous Release: 1944 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1945 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1946 Current Release: 1947 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1948 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1949 19502) iASL Compiler/Disassembler and Tools: 1951 1952No functional changes for this release. 1953 1954---------------------------------------- 195514 December 2009. Summary of changes for version 20091214: 1956 19571) ACPI CA Core Subsystem: 1958 1959Enhanced automatic data type conversions for predefined name repairs. This 1960change expands the automatic repairs/conversions for predefined name return 1961values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1962Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1963module was completely restructured. Lin Ming, Bob Moore. 1964 1965Implemented automatic removal of null package elements during predefined name 1966repairs. This change will automatically remove embedded and trailing NULL 1967package elements from returned package objects that are defined to contain a 1968variable number of sub-packages. The driver is then presented with a package 1969with no null elements to deal with. ACPICA BZ 819. 1970 1971Implemented a repair for the predefined _FDE and _GTM names. The expected 1972return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1973possible problems (both seen in the field), where a package of integers is 1974returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1975 1976Implemented additional module-level code support. This change will properly 1977execute module-level code that is not at the root of the namespace (under a 1978Device object, etc.). Now executes the code within the current scope instead 1979of the root. ACPICA BZ 762. Lin Ming. 1980 1981Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1982problem where mutex errors can occur when running a _REG method that is in 1983the same scope as a method-defined operation region or an operation region 1984under a module-level IF block. This type of code is rare, so the problem has 1985not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1986 1987Fixed a possible memory leak during module-level code execution. An object 1988could be leaked for each block of executed module-level code if the 1989interpreter slack mode is enabled This change deletes any implicitly returned 1990object from the module-level code block. Lin Ming. 1991 1992Removed messages for successful predefined repair(s). The repair mechanism 1993was considered too wordy. Now, messages are only unconditionally emitted if 1994the return object cannot be repaired. Existing messages for successful 1995repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1996 1997Example Code and Data Size: These are the sizes for the OS-independent 1998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1999debug version of the code includes the debug output trace mechanism and has a 2000much larger code and data size. 2001 2002 Previous Release: 2003 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 2004 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 2005 Current Release: 2006 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 2007 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 2008 20092) iASL Compiler/Disassembler and Tools: 2010 2011iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 2012were no longer automatically removed at the termination of the compile. 2013 2014acpiexec: Implemented the -f option to specify default region fill value. 2015This option specifies the value used to initialize buffers that simulate 2016operation regions. Default value is zero. Useful for debugging problems that 2017depend on a specific initial value for a region or field. 2018 2019---------------------------------------- 202012 November 2009. Summary of changes for version 20091112: 2021 20221) ACPI CA Core Subsystem: 2023 2024Implemented a post-order callback to AcpiWalkNamespace. The existing 2025interface only has a pre-order callback. This change adds an additional 2026parameter for a post-order callback which will be more useful for bus scans. 2027ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 2028 2029Modified the behavior of the operation region memory mapping cache for 2030SystemMemory. Ensure that the memory mappings created for operation regions 2031do not cross 4K page boundaries. Crossing a page boundary while mapping 2032regions can cause kernel warnings on some hosts if the pages have different 2033attributes. Such regions are probably BIOS bugs, and this is the workaround. 2034Linux BZ 14445. Lin Ming. 2035 2036Implemented an automatic repair for predefined methods that must return 2037sorted lists. This change will repair (by sorting) packages returned by _ALR, 2038_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 2039and do not contain NULL package elements. Adds one new file, 2040namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 2041 2042Fixed a possible fault during predefined name validation if a return Package 2043object contains NULL elements. Also adds a warning if a NULL element is 2044followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 2045include repair or removal of all such NULL elements where possible. 2046 2047Implemented additional module-level executable AML code support. This change 2048will execute module-level code that is not at the root of the namespace 2049(under a Device object, etc.) at table load time. Module-level executable AML 2050code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 2051 2052Implemented a new internal function to create Integer objects. This function 2053simplifies miscellaneous object creation code. ACPICA BZ 823. 2054 2055Reduced the severity of predefined repair messages, Warning to Info. Since 2056the object was successfully repaired, a warning is too severe. Reduced to an 2057info message for now. These messages may eventually be changed to debug-only. 2058ACPICA BZ 812. 2059 2060Example Code and Data Size: These are the sizes for the OS-independent 2061acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2062debug version of the code includes the debug output trace mechanism and has a 2063much larger code and data size. 2064 2065 Previous Release: 2066 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 2067 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 2068 Current Release: 2069 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 2070 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 2071 20722) iASL Compiler/Disassembler and Tools: 2073 2074iASL: Implemented Switch() with While(1) so that Break works correctly. This 2075change correctly implements the Switch operator with a surrounding While(1) 2076so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 2077 2078iASL: Added a message if a package initializer list is shorter than package 2079length. Adds a new remark for a Package() declaration if an initializer list 2080exists, but is shorter than the declared length of the package. Although 2081technically legal, this is probably a coding error and it is seen in the 2082field. ACPICA BZ 815. Lin Ming, Bob Moore. 2083 2084iASL: Fixed a problem where the compiler could fault after the maximum number 2085of errors was reached (200). 2086 2087acpixtract: Fixed a possible warning for pointer cast if the compiler warning 2088level set very high. 2089 2090---------------------------------------- 209113 October 2009. Summary of changes for version 20091013: 2092 20931) ACPI CA Core Subsystem: 2094 2095Fixed a problem where an Operation Region _REG method could be executed more 2096than once. If a custom address space handler is installed by the host before 2097the "initialize operation regions" phase of the ACPICA initialization, any 2098_REG methods for that address space could be executed twice. This change 2099fixes the problem. ACPICA BZ 427. Lin Ming. 2100 2101Fixed a possible memory leak for the Scope() ASL operator. When the exact 2102invocation of "Scope(\)" is executed (change scope to root), one internal 2103operand object was leaked. Lin Ming. 2104 2105Implemented a run-time repair for the _MAT predefined method. If the _MAT 2106return value is defined as a Field object in the AML, and the field 2107size is less than or equal to the default width of an integer (32 or 64),_MAT 2108can incorrectly return an Integer instead of a Buffer. ACPICA now 2109automatically repairs this problem. ACPICA BZ 810. 2110 2111Implemented a run-time repair for the _BIF and _BIX predefined methods. The 2112"OEM Information" field is often incorrectly returned as an Integer with 2113value zero if the field is not supported by the platform. This is due to an 2114ambiguity in the ACPI specification. The field should always be a string. 2115ACPICA now automatically repairs this problem by returning a NULL string 2116within the returned Package. ACPICA BZ 807. 2117 2118Example Code and Data Size: These are the sizes for the OS-independent 2119acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2120debug version of the code includes the debug output trace mechanism and has a 2121much larger code and data size. 2122 2123 Previous Release: 2124 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 2125 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 2126 Current Release: 2127 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 2128 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 2129 21302) iASL Compiler/Disassembler and Tools: 2131 2132Disassembler: Fixed a problem where references to external symbols that 2133contained one or more parent-prefixes (carats) were not handled correctly, 2134possibly causing a fault. ACPICA BZ 806. Lin Ming. 2135 2136Disassembler: Restructured the code so that all functions that handle 2137external symbols are in a single module. One new file is added, 2138common/dmextern.c. 2139 2140AML Debugger: Added a max count argument for the Batch command (which 2141executes multiple predefined methods within the namespace.) 2142 2143iASL: Updated the compiler documentation (User Reference.) Available at 2144http://www.acpica.org/documentation/. ACPICA BZ 750. 2145 2146AcpiXtract: Updated for Lint and other formatting changes. Close all open 2147files. 2148 2149---------------------------------------- 215003 September 2009. Summary of changes for version 20090903: 2151 21521) ACPI CA Core Subsystem: 2153 2154For Windows Vista compatibility, added the automatic execution of an _INI 2155method located at the namespace root (\_INI). This method is executed at 2156table load time. This support is in addition to the automatic execution of 2157\_SB._INI. Lin Ming. 2158 2159Fixed a possible memory leak in the interpreter for AML package objects if 2160the package initializer list is longer than the defined size of the package. 2161This apparently can only happen if the BIOS changes the package size on the 2162fly (seen in a _PSS object), as ASL compilers do not allow this. The 2163interpreter will truncate the package to the defined size (and issue an error 2164message), but previously could leave the extra objects undeleted if they were 2165pre-created during the argument processing (such is the case if the package 2166consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 2167 2168Fixed a problem seen when a Buffer or String is stored to itself via ASL. 2169This has been reported in the field. Previously, ACPICA would zero out the 2170buffer/string. Now, the operation is treated as a noop. Provides Windows 2171compatibility. ACPICA BZ 803. Lin Ming. 2172 2173Removed an extraneous error message for ASL constructs of the form 2174Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 2175are seen in many BIOSs and are once again treated as NOOPs and no error is 2176emitted when they are encountered. ACPICA BZ 785. 2177 2178Fixed an extraneous warning message if a _DSM reserved method returns a 2179Package object. _DSM can return any type of object, so validation on the 2180return type cannot be performed. ACPICA BZ 802. 2181 2182Example Code and Data Size: These are the sizes for the OS-independent 2183acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2184debug version of the code includes the debug output trace mechanism and has a 2185much larger code and data size. 2186 2187 Previous Release: 2188 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 2189 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 2190 Current Release: 2191 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 2192 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 2193 21942) iASL Compiler/Disassembler and Tools: 2195 2196iASL: Fixed a problem with the use of the Alias operator and Resource 2197Templates. The correct alias is now constructed and no error is emitted. 2198ACPICA BZ 738. 2199 2200iASL: Implemented the -I option to specify additional search directories for 2201include files. Allows multiple additional search paths for include files. 2202Directories are searched in the order specified on the command line (after 2203the local directory is searched.) ACPICA BZ 800. 2204 2205iASL: Fixed a problem where the full pathname for include files was not 2206emitted for warnings/errors. This caused the IDE support to not work 2207properly. ACPICA BZ 765. 2208 2209iASL: Implemented the -@ option to specify a Windows-style response file 2210containing additional command line options. ACPICA BZ 801. 2211 2212AcpiExec: Added support to load multiple AML files simultaneously (such as a 2213DSDT and multiple SSDTs). Also added support for wildcards within the AML 2214pathname. These features allow all machine tables to be easily loaded and 2215debugged together. ACPICA BZ 804. 2216 2217Disassembler: Added missing support for disassembly of HEST table Error Bank 2218subtables. 2219 2220---------------------------------------- 222130 July 2009. Summary of changes for version 20090730: 2222 2223The ACPI 4.0 implementation for ACPICA is complete with this release. 2224 22251) ACPI CA Core Subsystem: 2226 2227ACPI 4.0: Added header file support for all new and changed ACPI tables. 2228Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 2229for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 2230EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 2231have been some ACPI 4.0 changes to other existing tables. Split the large 2232actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 2233 2234ACPI 4.0: Implemented predefined name validation for all new names. There are 223531 new names in ACPI 4.0. The predefined validation module was split into two 2236files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 2237 2238Implemented support for so-called "module-level executable code". This is 2239executable AML code that exists outside of any control method and is intended 2240to be executed at table load time. Although illegal since ACPI 2.0, this type 2241of code still exists and is apparently still being created. Blocks of this 2242code are now detected and executed as intended. Currently, the code blocks 2243must exist under either an If, Else, or While construct; these are the 2244typical cases seen in the field. ACPICA BZ 762. Lin Ming. 2245 2246Implemented an automatic dynamic repair for predefined names that return 2247nested Package objects. This applies to predefined names that are defined to 2248return a variable-length Package of sub-packages. If the number of sub- 2249packages is one, BIOS code is occasionally seen that creates a simple single 2250package with no sub-packages. This code attempts to fix the problem by 2251wrapping a new package object around the existing package. These methods can 2252be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 2253790. 2254 2255Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 2256The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 2257BZ 793. 2258 2259Fixed a problem with AcpiReset where the reset would silently fail if the 2260register was one of the protected I/O ports. AcpiReset now bypasses the port 2261validation mechanism. This may eventually be driven into the AcpiRead/Write 2262interfaces. 2263 2264Fixed a regression related to the recent update of the AcpiRead/Write 2265interfaces. A sleep/suspend could fail if the optional PM2 Control register 2266does not exist during an attempt to write the Bus Master Arbitration bit. 2267(However, some hosts already delete the code that writes this bit, and the 2268code may in fact be obsolete at this date.) ACPICA BZ 799. 2269 2270Fixed a problem where AcpiTerminate could fault if inadvertently called twice 2271in succession. ACPICA BZ 795. 2272 2273Example Code and Data Size: These are the sizes for the OS-independent 2274acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2275debug version of the code includes the debug output trace mechanism and has a 2276much larger code and data size. 2277 2278 Previous Release: 2279 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 2280 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 2281 Current Release: 2282 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 2283 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 2284 22852) iASL Compiler/Disassembler and Tools: 2286 2287ACPI 4.0: Implemented disassembler support for all new ACPI tables and 2288changes to existing tables. ACPICA BZ 775. 2289 2290---------------------------------------- 229125 June 2009. Summary of changes for version 20090625: 2292 2293The ACPI 4.0 Specification was released on June 16 and is available at 2294www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 2295continue for the next few releases. 2296 22971) ACPI CA Core Subsystem: 2298 2299ACPI 4.0: Implemented interpreter support for the IPMI operation region 2300address space. Includes support for bi-directional data buffers and an IPMI 2301address space handler (to be installed by an IPMI device driver.) ACPICA BZ 2302773. Lin Ming. 2303 2304ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 2305support in both the header files and the disassembler. 2306 2307Completed a major update for the AcpiGetObjectInfo external interface. 2308Changes include: 2309 - Support for variable, unlimited length HID, UID, and CID strings. 2310 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 2311 - Call the _SxW power methods on behalf of a device object. 2312 - Determine if a device is a PCI root bridge. 2313 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 2314These changes will require an update to all callers of this interface. See 2315the updated ACPICA Programmer Reference for details. One new source file has 2316been added - utilities/utids.c. ACPICA BZ 368, 780. 2317 2318Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 2319transfers. The Value parameter has been extended from 32 bits to 64 bits in 2320order to support new ACPI 4.0 tables. These changes will require an update to 2321all callers of these interfaces. See the ACPICA Programmer Reference for 2322details. ACPICA BZ 768. 2323 2324Fixed several problems with AcpiAttachData. The handler was not invoked when 2325the host node was deleted. The data sub-object was not automatically deleted 2326when the host node was deleted. The interface to the handler had an unused 2327parameter, this was removed. ACPICA BZ 778. 2328 2329Enhanced the function that dumps ACPI table headers. All non-printable 2330characters in the string fields are now replaced with '?' (Signature, OemId, 2331OemTableId, and CompilerId.) ACPI tables with non-printable characters in 2332these fields are occasionally seen in the field. ACPICA BZ 788. 2333 2334Fixed a problem with predefined method repair code where the code that 2335attempts to repair/convert an object of incorrect type is only executed on 2336the first time the predefined method is called. The mechanism that disables 2337warnings on subsequent calls was interfering with the repair mechanism. 2338ACPICA BZ 781. 2339 2340Fixed a possible memory leak in the predefined validation/repair code when a 2341buffer is automatically converted to an expected string object. 2342 2343Removed obsolete 16-bit files from the distribution and from the current git 2344tree head. ACPICA BZ 776. 2345 2346Example Code and Data Size: These are the sizes for the OS-independent 2347acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2348debug version of the code includes the debug output trace mechanism and has a 2349much larger code and data size. 2350 2351 Previous Release: 2352 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 2353 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 2354 Current Release: 2355 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 2356 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 2357 23582) iASL Compiler/Disassembler and Tools: 2359 2360ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 2361operation region keyword. ACPICA BZ 771, 772. Lin Ming. 2362 2363ACPI 4.0: iASL - implemented compile-time validation support for all new 2364predefined names and control methods (31 total). ACPICA BZ 769. 2365 2366---------------------------------------- 236721 May 2009. Summary of changes for version 20090521: 2368 23691) ACPI CA Core Subsystem: 2370 2371Disabled the preservation of the SCI enable bit in the PM1 control register. 2372The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 2373a "preserved" bit - "OSPM always preserves this bit position", section 23744.7.3.2.1. However, some machines fail if this bit is in fact preserved 2375because the bit needs to be explicitly set by the OS as a workaround. No 2376machines fail if the bit is not preserved. Therefore, ACPICA no longer 2377attempts to preserve this bit. 2378 2379Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 2380incorrectly formed _PRT package could cause a fault. Added validation to 2381ensure that each package element is actually a sub-package. 2382 2383Implemented a new interface to install or override a single control method, 2384AcpiInstallMethod. This interface is useful when debugging in order to repair 2385an existing method or to install a missing method without having to override 2386the entire ACPI table. See the ACPICA Programmer Reference for use and 2387examples. Lin Ming, Bob Moore. 2388 2389Fixed several reference count issues with the DdbHandle object that is 2390created from a Load or LoadTable operator. Prevent premature deletion of the 2391object. Also, mark the object as invalid once the table has been unloaded. 2392This is needed because the handle itself may not be deleted after the table 2393unload, depending on whether it has been stored in a named object by the 2394caller. Lin Ming. 2395 2396Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 2397mutexes of the same sync level are acquired but then not released in strict 2398opposite order, the internally maintained Current Sync Level becomes confused 2399and can cause subsequent execution errors. ACPICA BZ 471. 2400 2401Changed the allowable release order for ASL mutex objects. The ACPI 4.0 2402specification has been changed to make the SyncLevel for mutex objects more 2403useful. When releasing a mutex, the SyncLevel of the mutex must now be the 2404same as the current sync level. This makes more sense than the previous rule 2405(SyncLevel less than or equal). This change updates the code to match the 2406specification. 2407 2408Fixed a problem with the local version of the AcpiOsPurgeCache function. The 2409(local) cache must be locked during all cache object deletions. Andrew 2410Baumann. 2411 2412Updated the Load operator to use operation region interfaces. This replaces 2413direct memory mapping with region access calls. Now, all region accesses go 2414through the installed region handler as they should. 2415 2416Simplified and optimized the NsGetNextNode function. Reduced parameter count 2417and reduced code for this frequently used function. 2418 2419Example Code and Data Size: These are the sizes for the OS-independent 2420acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2421debug version of the code includes the debug output trace mechanism and has a 2422much larger code and data size. 2423 2424 Previous Release: 2425 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 2426 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 2427 Current Release: 2428 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 2429 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 2430 24312) iASL Compiler/Disassembler and Tools: 2432 2433Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 2434with sub-table disassembly and handling invalid sub-tables. Attempt recovery 2435after an invalid sub-table ID. 2436 2437---------------------------------------- 243822 April 2009. Summary of changes for version 20090422: 2439 24401) ACPI CA Core Subsystem: 2441 2442Fixed a compatibility issue with the recently released I/O port protection 2443mechanism. For windows compatibility, 1) On a port protection violation, 2444simply ignore the request and do not return an exception (allow the control 2445method to continue execution.) 2) If only part of the request overlaps a 2446protected port, read/write the individual ports that are not protected. Linux 2447BZ 13036. Lin Ming 2448 2449Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 2450breaks into the AML debugger if the debugger is present. This matches the 2451ACPI-defined behavior. 2452 2453Fixed several possible warnings related to the use of the configurable 2454ACPI_THREAD_ID. This type can now be configured as either an integer or a 2455pointer with no warnings. Also fixes several warnings in printf-like 2456statements for the 64-bit build when the type is configured as a pointer. 2457ACPICA BZ 766, 767. 2458 2459Fixed a number of possible warnings when compiling with gcc 4+ (depending on 2460warning options.) Examples include printf formats, aliasing, unused globals, 2461missing prototypes, missing switch default statements, use of non-ANSI 2462library functions, use of non-ANSI constructs. See generate/unix/Makefile for 2463a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 2464 2465Example Code and Data Size: These are the sizes for the OS-independent 2466acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2467debug version of the code includes the debug output trace mechanism and has a 2468much larger code and data size. 2469 2470 Previous Release: 2471 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2472 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2473 Current Release: 2474 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 2475 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 2476 24772) iASL Compiler/Disassembler and Tools: 2478 2479iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 2480the 64-bit build. 2481 2482iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 2483correctly digest Windows/DOS formatted files (with CR/LF). 2484 2485iASL: Added a new option for "quiet mode" (-va) that produces only the 2486compilation summary, not individual errors and warnings. Useful for large 2487batch compilations. 2488 2489AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 2490timeout that can be used to detect hang conditions during execution of AML 2491code (includes both internal semaphores and AML-defined mutexes and events.) 2492 2493Added new makefiles for the generation of acpica in a generic unix-like 2494environment. These makefiles are intended to generate the acpica tools and 2495utilities from the original acpica git source tree structure. 2496 2497Test Suites: Updated and cleaned up the documentation files. Updated the 2498copyrights to 2009, affecting all source files. Use the new version of iASL 2499with quiet mode. Increased the number of available semaphores in the Windows 2500OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 2501an alternate implementation of the semaphore timeout to allow aslts to 2502execute fully on Cygwin. 2503 2504---------------------------------------- 250520 March 2009. Summary of changes for version 20090320: 2506 25071) ACPI CA Core Subsystem: 2508 2509Fixed a possible race condition between AcpiWalkNamespace and dynamic table 2510unloads. Added a reader/writer locking mechanism to allow multiple concurrent 2511namespace walks (readers), but block a dynamic table unload until it can gain 2512exclusive write access to the namespace. This fixes a problem where a table 2513unload could (possibly catastrophically) delete the portion of the namespace 2514that is currently being examined by a walk. Adds a new file, utlock.c, that 2515implements the reader/writer lock mechanism. ACPICA BZ 749. 2516 2517Fixed a regression introduced in version 20090220 where a change to the FADT 2518handling could cause the ACPICA subsystem to access non-existent I/O ports. 2519 2520Modified the handling of FADT register and table (FACS/DSDT) addresses. The 2521FADT can contain both 32-bit and 64-bit versions of these addresses. 2522Previously, the 64-bit versions were favored, meaning that if both 32 and 64 2523versions were valid, but not equal, the 64-bit version was used. This was 2524found to cause some machines to fail. Now, in this case, the 32-bit version 2525is used instead. This now matches the Windows behavior. 2526 2527Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 2528compatibility and protects the standard PC I/O ports from access via AML 2529code. Adds a new file, hwvalid.c 2530 2531Fixed a possible extraneous warning message from the FADT support. The 2532message warns of a 32/64 length mismatch between the legacy and GAS 2533definitions for a register. 2534 2535Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 2536made obsolete by the port protection mechanism above. It was previously used 2537to validate the entire address range of an operation region, which could be 2538incorrect if the range included illegal ports, but fields within the 2539operation region did not actually access those ports. Validation is now 2540performed on a per-field basis instead of the entire region. 2541 2542Modified the handling of the PM1 Status Register ignored bit (bit 11.) 2543Ignored bits must be "preserved" according to the ACPI spec. Usually, this 2544means a read/modify/write when writing to the register. However, for status 2545registers, writing a one means clear the event. Writing a zero means preserve 2546the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 2547and the ACPICA code now simply always writes a zero to the ignored bit. 2548 2549Modified the handling of ignored bits for the PM1 A/B Control Registers. As 2550per the ACPI specification, for the control registers, preserve 2551(read/modify/write) all bits that are defined as either reserved or ignored. 2552 2553Updated the handling of write-only bits in the PM1 A/B Control Registers. 2554When reading the register, zero the write-only bits as per the ACPI spec. 2555ACPICA BZ 443. Lin Ming. 2556 2557Removed "Linux" from the list of supported _OSI strings. Linux no longer 2558wants to reply true to this request. The Windows strings are the only paths 2559through the AML that are tested and known to work properly. 2560 2561 Previous Release: 2562 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2563 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2564 Current Release: 2565 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 2566 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 2567 25682) iASL Compiler/Disassembler and Tools: 2569 2570Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 2571aetables.c 2572 2573---------------------------------------- 257420 February 2009. Summary of changes for version 20090220: 2575 25761) ACPI CA Core Subsystem: 2577 2578Optimized the ACPI register locking. Removed locking for reads from the ACPI 2579bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 2580not required when reading the single-bit registers. The 2581AcpiGetRegisterUnlocked function is no longer needed and has been removed. 2582This will improve performance for reads on these registers. ACPICA BZ 760. 2583 2584Fixed the parameter validation for AcpiRead/Write. Now return 2585AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 2586the register has an address of zero. Previously, these cases simply returned 2587AE_OK. For optional registers such as PM1B status/enable/control, the caller 2588should check for a valid register address before calling. ACPICA BZ 748. 2589 2590Renamed the external ACPI bit register access functions. Renamed 2591AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 2592functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 2593Also, restructured the code for these functions by simplifying the code path 2594and condensing duplicate code to reduce code size. 2595 2596Added new functions to transparently handle the possibly split PM1 A/B 2597registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 2598now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 2599746. 2600 2601Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 2602This function writes both of the PM1 control registers (A/B). These registers 2603are different than the PM1 A/B status and enable registers in that different 2604values can be written to the A/B registers. Most notably, the SLP_TYP bits 2605can be different, as per the values returned from the _Sx predefined methods. 2606 2607Removed an extra register write within AcpiHwClearAcpiStatus. This function 2608was writing an optional PM1B status register twice. The existing call to the 2609low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 2610register. ACPICA BZ 751. 2611 2612Split out the PM1 Status registers from the FADT. Added new globals for these 2613registers (A/B), similar to the way the PM1 Enable registers are handled. 2614Instead of overloading the FADT Event Register blocks. This makes the code 2615clearer and less prone to error. 2616 2617Fixed the warning message for when the platform contains too many ACPI tables 2618for the default size of the global root table data structure. The calculation 2619for the truncation value was incorrect. 2620 2621Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 2622obsolete macro, since it is now a simple reference to ->common.type. There 2623were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 2624 2625Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 2626TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 2627simply SLEEP_TYPE. ACPICA BZ 754. 2628 2629Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 2630function is only needed on 64-bit host operating systems and is thus not 2631included for 32-bit hosts. 2632 2633Debug output: print the input and result for invocations of the _OSI reserved 2634control method via the ACPI_LV_INFO debug level. Also, reduced some of the 2635verbosity of this debug level. Len Brown. 2636 2637Example Code and Data Size: These are the sizes for the OS-independent 2638acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2639debug version of the code includes the debug output trace mechanism and has a 2640much larger code and data size. 2641 2642 Previous Release: 2643 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2644 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2645 Current Release: 2646 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 2647 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 2648 26492) iASL Compiler/Disassembler and Tools: 2650 2651Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 2652various legal performance profiles. 2653 2654---------------------------------------- 265523 January 2009. Summary of changes for version 20090123: 2656 26571) ACPI CA Core Subsystem: 2658 2659Added the 2009 copyright to all module headers and signons. This affects 2660virtually every file in the ACPICA core subsystem, the iASL compiler, and 2661the tools/utilities. 2662 2663Implemented a change to allow the host to override any ACPI table, including 2664dynamically loaded tables. Previously, only the DSDT could be replaced by the 2665host. With this change, the AcpiOsTableOverride interface is called for each 2666table found in the RSDT/XSDT during ACPICA initialization, and also whenever 2667a table is dynamically loaded via the AML Load operator. 2668 2669Updated FADT flag definitions, especially the Boot Architecture flags. 2670 2671Debugger: For the Find command, automatically pad the input ACPI name with 2672underscores if the name is shorter than 4 characters. This enables a match 2673with the actual namespace entry which is itself padded with underscores. 2674 2675Example Code and Data Size: These are the sizes for the OS-independent 2676acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2677debug version of the code includes the debug output trace mechanism and has a 2678much larger code and data size. 2679 2680 Previous Release: 2681 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2682 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2683 Current Release: 2684 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 2685 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 2686 26872) iASL Compiler/Disassembler and Tools: 2688 2689Fix build error under Bison-2.4. 2690 2691Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 2692flags. Now decode all flags, regardless of the FADT version. Flag output 2693includes the FADT version which first defined each flag. 2694 2695The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 2696DSDT). Windows only. 2697 2698---------------------------------------- 269904 December 2008. Summary of changes for version 20081204: 2700 27011) ACPI CA Core Subsystem: 2702 2703The ACPICA Programmer Reference has been completely updated and revamped for 2704this release. This includes updates to the external interfaces, OSL 2705interfaces, the overview sections, and the debugger reference. 2706 2707Several new ACPICA interfaces have been implemented and documented in the 2708programmer reference: 2709AcpiReset - Writes the reset value to the FADT-defined reset register. 2710AcpiDisableAllGpes - Disable all available GPEs. 2711AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 2712AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 2713AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 2714AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 2715AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 2716 2717Most of the public ACPI hardware-related interfaces have been moved to a new 2718file, components/hardware/hwxface.c 2719 2720Enhanced the FADT parsing and low-level ACPI register access: The ACPI 2721register lengths within the FADT are now used, and the low level ACPI 2722register access no longer hardcodes the ACPI register lengths. Given that 2723there may be some risk in actually trusting the FADT register lengths, a run- 2724time option was added to fall back to the default hardcoded lengths if the 2725FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 2726option is set to true for now, and a warning is issued if a suspicious FADT 2727register length is overridden with the default value. 2728 2729Fixed a reference count issue in NsRepairObject. This problem was introduced 2730in version 20081031 as part of a fix to repair Buffer objects within 2731Packages. Lin Ming. 2732 2733Added semaphore support to the Linux/Unix application OS-services layer 2734(OSL). ACPICA BZ 448. Lin Ming. 2735 2736Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 2737be implemented in the OSL, or will binary semaphores be used instead. 2738 2739Example Code and Data Size: These are the sizes for the OS-independent 2740acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2741debug version of the code includes the debug output trace mechanism and has a 2742much larger code and data size. 2743 2744 Previous Release: 2745 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2746 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2747 Current Release: 2748 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 2749 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 2750 27512) iASL Compiler/Disassembler and Tools: 2752 2753iASL: Completed the '-e' option to include additional ACPI tables in order to 2754aid with disassembly and External statement generation. ACPICA BZ 742. Lin 2755Ming. 2756 2757iASL: Removed the "named object in while loop" error. The compiler cannot 2758determine how many times a loop will execute. ACPICA BZ 730. 2759 2760Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 2761BZ 743. 2762 2763Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 2764 2765---------------------------------------- 276631 October 2008. Summary of changes for version 20081031: 2767 27681) ACPI CA Core Subsystem: 2769 2770Restructured the ACPICA header files into public/private. acpi.h now includes 2771only the "public" acpica headers. All other acpica headers are "private" and 2772should not be included by acpica users. One new file, accommon.h is used to 2773include the commonly used private headers for acpica code generation. Future 2774plans include moving all private headers to a new subdirectory. 2775 2776Implemented an automatic Buffer->String return value conversion for 2777predefined ACPI methods. For these methods (such as _BIF), added automatic 2778conversion for return objects that are required to be a String, but a Buffer 2779was found instead. This can happen when reading string battery data from an 2780operation region, because it used to be difficult to convert the data from 2781buffer to string from within the ASL. Ensures that the host OS is provided 2782with a valid null-terminated string. Linux BZ 11822. 2783 2784Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 2785into two: one for the 32-bit vector, another for the 64-bit vector. This is 2786required because the host OS must setup the wake much differently for each 2787vector (real vs. protected mode, etc.) and the interface itself should not be 2788deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 2789interface, as it served no purpose (only the firmware reads the vector, OS 2790only writes the vector.) ACPICA BZ 731. 2791 2792Implemented a mechanism to escape infinite AML While() loops. Added a loop 2793counter to force exit from AML While loops if the count becomes too large. 2794This can occur in poorly written AML when the hardware does not respond 2795within a while loop and the loop does not implement a timeout. The maximum 2796loop count is configurable. A new exception code is returned when a loop is 2797broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 2798 2799Optimized the execution of AML While loops. Previously, a control state 2800object was allocated and freed for each execution of the loop. The 2801optimization is to simply reuse the control state for each iteration. This 2802speeds up the raw loop execution time by about 5%. 2803 2804Enhanced the implicit return mechanism. For Windows compatibility, return an 2805implicit integer of value zero for methods that contain no executable code. 2806Such methods are seen in the field as stubs (presumably), and can cause 2807drivers to fail if they expect a return value. Lin Ming. 2808 2809Allow multiple backslashes as root prefixes in namepaths. In a fully 2810qualified namepath, allow multiple backslash prefixes. This can happen (and 2811is seen in the field) because of the use of a double-backslash in strings 2812(since backslash is the escape character) causing confusion. ACPICA BZ 739 2813Lin Ming. 2814 2815Emit a warning if two different FACS or DSDT tables are discovered in the 2816FADT. Checks if there are two valid but different addresses for the FACS and 2817DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 2818 2819Consolidated the method argument count validation code. Merged the code that 2820validates control method argument counts into the predefined validation 2821module. Eliminates possible multiple warnings for incorrect argument counts. 2822 2823Implemented ACPICA example code. Includes code for ACPICA initialization, 2824handler installation, and calling a control method. Available at 2825source/tools/examples. 2826 2827Added a global pointer for FACS table to simplify internal FACS access. Use 2828the global pointer instead of using AcpiGetTableByIndex for each FACS access. 2829This simplifies the code for the Global Lock and the Firmware Waking 2830Vector(s). 2831 2832Example Code and Data Size: These are the sizes for the OS-independent 2833acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2834debug version of the code includes the debug output trace mechanism and has a 2835much larger code and data size. 2836 2837 Previous Release: 2838 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2839 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2840 Current Release: 2841 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 2842 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 2843 28442) iASL Compiler/Disassembler and Tools: 2845 2846iASL: Improved disassembly of external method calls. Added the -e option to 2847allow the inclusion of additional ACPI tables to help with the disassembly of 2848method invocations and the generation of external declarations during the 2849disassembly. Certain external method invocations cannot be disassembled 2850properly without the actual declaration of the method. Use the -e option to 2851include the table where the external method(s) are actually declared. Most 2852useful for disassembling SSDTs that make method calls back to the master 2853DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 2854-e dsdt.aml ssdt1.aml 2855 2856iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 2857problem where the use of an alias within a namepath would result in a not 2858found error or cause the compiler to fault. Also now allows forward 2859references from the Alias operator itself. ACPICA BZ 738. 2860 2861---------------------------------------- 286226 September 2008. Summary of changes for version 20080926: 2863 28641) ACPI CA Core Subsystem: 2865 2866Designed and implemented a mechanism to validate predefined ACPI methods and 2867objects. This code validates the predefined ACPI objects (objects whose names 2868start with underscore) that appear in the namespace, at the time they are 2869evaluated. The argument count and the type of the returned object are 2870validated against the ACPI specification. The purpose of this validation is 2871to detect problems with the BIOS-implemented predefined ACPI objects before 2872the results are returned to the ACPI-related drivers. Future enhancements may 2873include actual repair of incorrect return objects where possible. Two new 2874files are nspredef.c and acpredef.h. 2875 2876Fixed a fault in the AML parser if a memory allocation fails during the Op 2877completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 2878 2879Fixed an issue with implicit return compatibility. This change improves the 2880implicit return mechanism to be more compatible with the MS interpreter. Lin 2881Ming, ACPICA BZ 349. 2882 2883Implemented support for zero-length buffer-to-string conversions. Allow zero 2884length strings during interpreter buffer-to-string conversions. For example, 2885during the ToDecimalString and ToHexString operators, as well as implicit 2886conversions. Fiodor Suietov, ACPICA BZ 585. 2887 2888Fixed two possible memory leaks in the error exit paths of 2889AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 2890similar in that they use a stack of state objects in order to eliminate 2891recursion. The stack must be fully unwound and deallocated if an error 2892occurs. Lin Ming. ACPICA BZ 383. 2893 2894Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 2895ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 2896Moore ACPICA BZ 442. 2897 2898Removed the obsolete version number in module headers. Removed the 2899"$Revision" number that appeared in each module header. This version number 2900was useful under SourceSafe and CVS, but has no meaning under git. It is not 2901only incorrect, it could also be misleading. 2902 2903Example Code and Data Size: These are the sizes for the OS-independent 2904acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2905debug version of the code includes the debug output trace mechanism and has a 2906much larger code and data size. 2907 2908 Previous Release: 2909 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2910 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2911 Current Release: 2912 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 2913 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 2914 2915---------------------------------------- 291629 August 2008. Summary of changes for version 20080829: 2917 29181) ACPI CA Core Subsystem: 2919 2920Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 2921Reference. Changes include the elimination of cheating on the Object field 2922for the DdbHandle subtype, addition of a reference class field to 2923differentiate the various reference types (instead of an AML opcode), and the 2924cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 2925 2926Reduce an error to a warning for an incorrect method argument count. 2927Previously aborted with an error if too few arguments were passed to a 2928control method via the external ACPICA interface. Now issue a warning instead 2929and continue. Handles the case where the method inadvertently declares too 2930many arguments, but does not actually use the extra ones. Applies mainly to 2931the predefined methods. Lin Ming. Linux BZ 11032. 2932 2933Disallow the evaluation of named object types with no intrinsic value. Return 2934AE_TYPE for objects that have no value and therefore evaluation is undefined: 2935Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 2936these types were allowed, but an exception would be generated at some point 2937during the evaluation. Now, the error is generated up front. 2938 2939Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2940(nsnames.c). Fixes a leak in the error exit path. 2941 2942Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2943levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2944interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2945ACPI_LV_EVENTS. 2946 2947Removed obsolete and/or unused exception codes from the acexcep.h header. 2948There is the possibility that certain device drivers may be affected if they 2949use any of these exceptions. 2950 2951The ACPICA documentation has been added to the public git source tree, under 2952acpica/documents. Included are the ACPICA programmer reference, the iASL 2953compiler reference, and the changes.txt release logfile. 2954 2955Example Code and Data Size: These are the sizes for the OS-independent 2956acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2957debug version of the code includes the debug output trace mechanism and has a 2958much larger code and data size. 2959 2960 Previous Release: 2961 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2962 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2963 Current Release: 2964 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2965 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2966 29672) iASL Compiler/Disassembler and Tools: 2968 2969Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2970defines _SCP with 3 arguments. Previous versions defined it with only 1 2971argument. iASL now allows both definitions. 2972 2973iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2974length subtables when disassembling ACPI tables. Also fixed a couple of 2975errors where a full 16-bit table type field was not extracted from the input 2976properly. 2977 2978acpisrc: Improve comment counting mechanism for generating source code 2979statistics. Count first and last lines of multi-line comments as whitespace, 2980not comment lines. Handle Linux legal header in addition to standard acpica 2981header. 2982 2983---------------------------------------- 2984 298529 July 2008. Summary of changes for version 20080729: 2986 29871) ACPI CA Core Subsystem: 2988 2989Fix a possible deadlock in the GPE dispatch. Remove call to 2990AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2991to acquire the GPE lock but can deadlock since the GPE lock is already held 2992at dispatch time. This code was introduced in version 20060831 as a response 2993to Linux BZ 6881 and has since been removed from Linux. 2994 2995Add a function to dereference returned reference objects. Examines the return 2996object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2997automatically dereferenced in an attempt to return something useful (these 2998reference types cannot be converted into an external ACPI_OBJECT.) Provides 2999MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 3000 3001x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 3002subtables for the MADT and one new subtable for the SRAT. Includes 3003disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 3004Specification, June 2008. 3005 3006Additional error checking for pathname utilities. Add error check after all 3007calls to AcpiNsGetPathnameLength. Add status return from 3008AcpiNsBuildExternalPath and check after all calls. Add parameter validation 3009to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 3010 3011Return status from the global init function AcpiUtGlobalInitialize. This is 3012used by both the kernel subsystem and the utilities such as iASL compiler. 3013The function could possibly fail when the caches are initialized. Yang Yi. 3014 3015Add a function to decode reference object types to strings. Created for 3016improved error messages. 3017 3018Improve object conversion error messages. Better error messages during object 3019conversion from internal to the external ACPI_OBJECT. Used for external calls 3020to AcpiEvaluateObject. 3021 3022Example Code and Data Size: These are the sizes for the OS-independent 3023acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3024debug version of the code includes the debug output trace mechanism and has a 3025much larger code and data size. 3026 3027 Previous Release: 3028 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 3029 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 3030 Current Release: 3031 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 3032 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 3033 30342) iASL Compiler/Disassembler and Tools: 3035 3036Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 3037introduced in version 20080701. If the object being evaluated (via execute 3038command) is not a method, the debugger can hang while trying to obtain non- 3039existent parameters. 3040 3041iASL: relax error for using reserved "_T_x" identifiers. These names can 3042appear in a disassembled ASL file if they were emitted by the original 3043compiler. Instead of issuing an error or warning and forcing the user to 3044manually change these names, issue a remark instead. 3045 3046iASL: error if named object created in while loop. Emit an error if any named 3047object is created within a While loop. If allowed, this code will generate a 3048run-time error on the second iteration of the loop when an attempt is made to 3049create the same named object twice. ACPICA bugzilla 730. 3050 3051iASL: Support absolute pathnames for include files. Add support for absolute 3052pathnames within the Include operator. previously, only relative pathnames 3053were supported. 3054 3055iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 3056The ACPI spec requires one interrupt minimum. BZ 423 3057 3058iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 3059Handles the case for the Interrupt Resource Descriptor where 3060the ResourceSource argument is omitted but ResourceSourceIndex 3061is present. Now leave room for the Index. BZ 426 3062 3063iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 3064where an error message is emitted if the target does not exist. BZ 516 3065 3066iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 3067(get ACPI tables on Windows). This was apparently broken in version 20070919. 3068 3069AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 3070the EOF happens immediately after the last table in the input file. Print 3071completion message. Previously, no message was displayed in this case. 3072 3073---------------------------------------- 307401 July 2008. Summary of changes for version 20080701: 3075 30760) Git source tree / acpica.org 3077 3078Fixed a problem where a git-clone from http would not transfer the entire 3079source tree. 3080 30811) ACPI CA Core Subsystem: 3082 3083Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 3084enable bit. Now performs a read-change-write of the enable register instead 3085of simply writing out the cached enable mask. This will prevent inadvertent 3086enabling of GPEs if a rogue GPE is received during initialization (before GPE 3087handlers are installed.) 3088 3089Implemented a copy for dynamically loaded tables. Previously, dynamically 3090loaded tables were simply mapped - but on some machines this memory is 3091corrupted after suspend. Now copy the table to a local buffer. For the 3092OpRegion case, added checksum verify. Use the table length from the table 3093header, not the region length. For the Buffer case, use the table length 3094also. Dennis Noordsij, Bob Moore. BZ 10734 3095 3096Fixed a problem where the same ACPI table could not be dynamically loaded and 3097unloaded more than once. Without this change, a table cannot be loaded again 3098once it has been loaded/unloaded one time. The current mechanism does not 3099unregister a table upon an unload. During a load, if the same table is found, 3100this no longer returns an exception. BZ 722 3101 3102Fixed a problem where the wrong descriptor length was calculated for the 3103EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 3104are calculated as 12 bytes long, but the actual length in the internal 3105descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 3106by Linn Crosetto. BZ 728 3107 3108Fixed a possible memory leak in the Unload operator. The DdbHandle returned 3109by Load() did not have its reference count decremented during unload, leading 3110to a memory leak. Lin Ming. BZ 727 3111 3112Fixed a possible memory leak when deleting thermal/processor objects. Any 3113associated notify handlers (and objects) were not being deleted. Fiodor 3114Suietov. BZ 506 3115 3116Fixed the ordering of the ASCII names in the global mutex table to match the 3117actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 3118Vegard Nossum. BZ 726 3119 3120Enhanced the AcpiGetObjectInfo interface to return the number of required 3121arguments if the object is a control method. Added this call to the debugger 3122so the proper number of default arguments are passed to a method. This 3123prevents a warning when executing methods from AcpiExec. 3124 3125Added a check for an invalid handle in AcpiGetObjectInfo. Return 3126AE_BAD_PARAMETER if input handle is invalid. BZ 474 3127 3128Fixed an extraneous warning from exconfig.c on the 64-bit build. 3129 3130Example Code and Data Size: These are the sizes for the OS-independent 3131acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3132debug version of the code includes the debug output trace mechanism and has a 3133much larger code and data size. 3134 3135 Previous Release: 3136 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 3137 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 3138 Current Release: 3139 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 3140 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 3141 31422) iASL Compiler/Disassembler and Tools: 3143 3144iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 3145resource descriptor names. 3146 3147iASL: Detect invalid ASCII characters in input (windows version). Removed the 3148"-CF" flag from the flex compile, enables correct detection of non-ASCII 3149characters in the input. BZ 441 3150 3151iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 3152"result of operation not used" warning when the DDB handle returned from 3153LoadTable is not used. The warning is not needed. BZ 590 3154 3155AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 3156pass address of table to the AML. Added option to disable OpRegion simulation 3157to allow creation of an OpRegion with a real address that was passed to _CFG. 3158All of this allows testing of the Load and Unload operators from AcpiExec. 3159 3160Debugger: update tables command for unloaded tables. Handle unloaded tables 3161and use the standard table header output routine. 3162 3163---------------------------------------- 316409 June 2008. Summary of changes for version 20080609: 3165 31661) ACPI CA Core Subsystem: 3167 3168Implemented a workaround for reversed _PRT entries. A significant number of 3169BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 3170change dynamically detects and repairs this problem. Provides compatibility 3171with MS ACPI. BZ 6859 3172 3173Simplified the internal ACPI hardware interfaces to eliminate the locking 3174flag parameter from Register Read/Write. Added a new external interface, 3175AcpiGetRegisterUnlocked. 3176 3177Fixed a problem where the invocation of a GPE control method could hang. This 3178was a regression introduced in 20080514. The new method argument count 3179validation mechanism can enter an infinite loop when a GPE method is 3180dispatched. Problem fixed by removing the obsolete code that passed GPE block 3181information to the notify handler via the control method parameter pointer. 3182 3183Fixed a problem where the _SST execution status was incorrectly returned to 3184the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 318520080514. _SST is optional and a NOT_FOUND exception should never be 3186returned. BZ 716 3187 3188Fixed a problem where a deleted object could be accessed from within the AML 3189parser. This was a regression introduced in version 20080123 as a fix for the 3190Unload operator. Lin Ming. BZ 10669 3191 3192Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 3193and eliminated the use of a negative index in a loop. Operands are now 3194displayed in the correct order, not backwards. This also fixes a regression 3195introduced in 20080514 on 64-bit systems where the elimination of 3196ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 3197 3198Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 3199path did not delete a locally allocated structure. 3200 3201Updated definitions for the DMAR and SRAT tables to synchronize with the 3202current specifications. Includes disassembler support. 3203 3204Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 3205loop termination value was used. Loop terminated on iteration early, missing 3206one mutex. Linn Crosetto 3207 3208Example Code and Data Size: These are the sizes for the OS-independent 3209acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3210debug version of the code includes the debug output trace mechanism and has a 3211much larger code and data size. 3212 3213 Previous Release: 3214 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 3215 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 3216 Current Release: 3217 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 3218 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 3219 32202) iASL Compiler/Disassembler and Tools: 3221 3222Disassembler: Implemented support for EisaId() within _CID objects. Now 3223disassemble integer _CID objects back to EisaId invocations, including 3224multiple integers within _CID packages. Includes single-step support for 3225debugger also. 3226 3227Disassembler: Added support for DMAR and SRAT table definition changes. 3228 3229---------------------------------------- 323014 May 2008. Summary of changes for version 20080514: 3231 32321) ACPI CA Core Subsystem: 3233 3234Fixed a problem where GPEs were enabled too early during the ACPICA 3235initialization. This could lead to "handler not installed" errors on some 3236machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 3237ensures that all operation regions and devices throughout the namespace have 3238been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 3239 3240Implemented a change to the enter sleep code. Moved execution of the _GTS 3241method to just before setting sleep enable bit. The execution was moved from 3242AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 3243immediately before the SLP_EN bit is set, as per the ACPI specification. 3244Luming Yu, BZ 1653. 3245 3246Implemented a fix to disable unknown GPEs (2nd version). Now always disable 3247the GPE, even if ACPICA thinks that that it is already disabled. It is 3248possible that the AML or some other code has enabled the GPE unbeknownst to 3249the ACPICA code. 3250 3251Fixed a problem with the Field operator where zero-length fields would return 3252an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 3253field declarations in Field(), BankField(), and IndexField(). BZ 10606. 3254 3255Implemented a fix for the Load operator, now load the table at the namespace 3256root. This reverts a change introduced in version 20071019. The table is now 3257loaded at the namespace root even though this goes against the ACPI 3258specification. This provides compatibility with other ACPI implementations. 3259The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 3260 3261Fixed a problem where ACPICA would not Load() tables with unusual signatures. 3262Now ignore ACPI table signature for Load() operator. Only "SSDT" is 3263acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 3264Therefore, signature validation is worthless. Apparently MS ACPI accepts such 3265signatures, ACPICA must be compatible. BZ 10454. 3266 3267Fixed a possible negative array index in AcpiUtValidateException. Added NULL 3268fields to the exception string arrays to eliminate a -1 subtraction on the 3269SubStatus field. 3270 3271Updated the debug tracking macros to reduce overall code and data size. 3272Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 3273instead of pointers to static strings. Jan Beulich and Bob Moore. 3274 3275Implemented argument count checking in control method invocation via 3276AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 3277many. This applies only to extern programmatic control method execution, not 3278method-to-method calls within the AML. Lin Ming. 3279 3280Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 3281longer needed, especially with the removal of 16-bit support. It was replaced 3282mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 328332/64-bit platforms is required. 3284 3285Added the C const qualifier for appropriate string constants -- mostly 3286MODULE_NAME and printf format strings. Jan Beulich. 3287 3288Example Code and Data Size: These are the sizes for the OS-independent 3289acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3290debug version of the code includes the debug output trace mechanism and has a 3291much larger code and data size. 3292 3293 Previous Release: 3294 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 3295 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 3296 Current Release: 3297 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 3298 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 3299 33002) iASL Compiler/Disassembler and Tools: 3301 3302Implemented ACPI table revision ID validation in the disassembler. Zero is 3303always invalid. For DSDTs, the ID controls the interpreter integer width. 1 3304means 32-bit and this is unusual. 2 or greater is 64-bit. 3305 3306---------------------------------------- 330721 March 2008. Summary of changes for version 20080321: 3308 33091) ACPI CA Core Subsystem: 3310 3311Implemented an additional change to the GPE support in order to suppress 3312spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 3313disable incoming GPEs that are neither enabled nor disabled -- meaning that 3314the GPE is unknown to the system. This should prevent future interrupt floods 3315from that GPE. BZ 6217 (Zhang Rui) 3316 3317Fixed a problem where NULL package elements were not returned to the 3318AcpiEvaluateObject interface correctly. The element was simply ignored 3319instead of returning a NULL ACPI_OBJECT package element, potentially causing 3320a buffer overflow and/or confusing the caller who expected a fixed number of 3321elements. BZ 10132 (Lin Ming, Bob Moore) 3322 3323Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 3324Qword), Field, BankField, and IndexField operators when invoked from inside 3325an executing control method. In this case, these operators created namespace 3326nodes that were incorrectly left marked as permanent nodes instead of 3327temporary nodes. This could cause a problem if there is race condition 3328between an exiting control method and a running namespace walk. (Reported by 3329Linn Crosetto) 3330 3331Fixed a problem where the CreateField and CreateXXXField operators would 3332incorrectly allow duplicate names (the name of the field) with no exception 3333generated. 3334 3335Implemented several changes for Notify handling. Added support for new Notify 3336values (ACPI 2.0+) and improved the Notify debug output. Notify on 3337PowerResource objects is no longer allowed, as per the ACPI specification. 3338(Bob Moore, Zhang Rui) 3339 3340All Reference Objects returned via the AcpiEvaluateObject interface are now 3341marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 3342NULL objects - either NULL package elements or unresolved named references. 3343 3344Fixed a problem where an extraneous debug message was produced for package 3345objects (when debugging enabled). The message "Package List length larger 3346than NumElements count" is now produced in the correct case, and is now an 3347error message rather than a debug message. Added a debug message for the 3348opposite case, where NumElements is larger than the Package List (the package 3349will be padded out with NULL elements as per the ACPI spec.) 3350 3351Implemented several improvements for the output of the ASL "Debug" object to 3352clarify and keep all data for a given object on one output line. 3353 3354Fixed two size calculation issues with the variable-length Start Dependent 3355resource descriptor. 3356 3357Example Code and Data Size: These are the sizes for the OS-independent 3358acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3359debug version of the code includes the debug output trace mechanism and has 3360a much larger code and data size. 3361 3362 Previous Release: 3363 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 3364 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 3365 Current Release: 3366 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 3367 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 3368 33692) iASL Compiler/Disassembler and Tools: 3370 3371Fixed a problem with the use of the Switch operator where execution of the 3372containing method by multiple concurrent threads could cause an 3373AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 3374actual Switch opcode, it must be simulated with local named temporary 3375variables and if/else pairs. The solution chosen was to mark any method that 3376uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 3377 3378---------------------------------------- 337913 February 2008. Summary of changes for version 20080213: 3380 33811) ACPI CA Core Subsystem: 3382 3383Implemented another MS compatibility design change for GPE/Notify handling. 3384GPEs are now cleared/enabled asynchronously to allow all pending notifies to 3385complete first. It is expected that the OSL will queue the enable request 3386behind all pending notify requests (may require changes to the local host OSL 3387in AcpiOsExecute). Alexey Starikovskiy. 3388 3389Fixed a problem where buffer and package objects passed as arguments to a 3390control method via the external AcpiEvaluateObject interface could cause an 3391AE_AML_INTERNAL exception depending on the order and type of operators 3392executed by the target control method. 3393 3394Fixed a problem where resource descriptor size optimization could cause a 3395problem when a _CRS resource template is passed to a _SRS method. The _SRS 3396resource template must use the same descriptors (with the same size) as 3397returned from _CRS. This change affects the following resource descriptors: 3398IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 3399 3400Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 3401objects did not perform an implicit conversion as it should. These types must 3402retain their initial type permanently as per the ACPI specification. However, 3403a CopyObject to all other object types should not perform an implicit 3404conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 3405 3406Fixed a problem with the AcpiGetDevices interface where the mechanism to 3407match device CIDs did not examine the entire list of available CIDs, but 3408instead aborted on the first non-matching CID. Andrew Patterson. 3409 3410Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 3411inadvertently changed to return a 16-bit value instead of a 32-bit value, 3412truncating the upper dword of a 64-bit value. This macro is only used to 3413display debug output, so no incorrect calculations were made. Also, 3414reimplemented the macro so that a 64-bit shift is not performed by 3415inefficient compilers. 3416 3417Added missing va_end statements that should correspond with each va_start 3418statement. 3419 3420Example Code and Data Size: These are the sizes for the OS-independent 3421acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3422debug version of the code includes the debug output trace mechanism and has 3423a much larger code and data size. 3424 3425 Previous Release: 3426 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 3427 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 3428 Current Release: 3429 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 3430 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 3431 34322) iASL Compiler/Disassembler and Tools: 3433 3434Implemented full disassembler support for the following new ACPI tables: 3435BERT, EINJ, and ERST. Implemented partial disassembler support for the 3436complicated HEST table. These tables support the Windows Hardware Error 3437Architecture (WHEA). 3438 3439---------------------------------------- 344023 January 2008. Summary of changes for version 20080123: 3441 34421) ACPI CA Core Subsystem: 3443 3444Added the 2008 copyright to all module headers and signons. This affects 3445virtually every file in the ACPICA core subsystem, the iASL compiler, and 3446the tools/utilities. 3447 3448Fixed a problem with the SizeOf operator when used with Package and Buffer 3449objects. These objects have deferred execution for some arguments, and the 3450execution is now completed before the SizeOf is executed. This problem caused 3451unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 34529558 3453 3454Implemented an enhancement to the interpreter "slack mode". In the absence of 3455an explicit return or an implicitly returned object from the last executed 3456opcode, a control method will now implicitly return an integer of value 0 for 3457Microsoft compatibility. (Lin Ming) BZ 392 3458 3459Fixed a problem with the Load operator where an exception was not returned in 3460the case where the table is already loaded. (Lin Ming) BZ 463 3461 3462Implemented support for the use of DDBHandles as an Indexed Reference, as per 3463the ACPI spec. (Lin Ming) BZ 486 3464 3465Implemented support for UserTerm (Method invocation) for the Unload operator 3466as per the ACPI spec. (Lin Ming) BZ 580 3467 3468Fixed a problem with the LoadTable operator where the OemId and OemTableId 3469input strings could cause unexpected failures if they were shorter than the 3470maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 3471 3472Implemented support for UserTerm (Method invocation) for the Unload operator 3473as per the ACPI spec. (Lin Ming) BZ 580 3474 3475Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 3476IBFT, UEFI, WDAT. Disassembler support is forthcoming. 3477 3478Example Code and Data Size: These are the sizes for the OS-independent 3479acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3480debug version of the code includes the debug output trace mechanism and has 3481a much larger code and data size. 3482 3483 Previous Release: 3484 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3485 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3486 Current Release: 3487 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 3488 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 3489 34902) iASL Compiler/Disassembler and Tools: 3491 3492Implemented support in the disassembler for checksum validation on incoming 3493binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 3494header dump at the start of the disassembly. 3495 3496Implemented additional debugging information in the namespace listing file 3497created during compilation. In addition to the namespace hierarchy, the full 3498pathname to each namespace object is displayed. 3499 3500Fixed a problem with the disassembler where invalid ACPI tables could cause 3501faults or infinite loops. 3502 3503Fixed an unexpected parse error when using the optional "parameter types" 3504list in a control method declaration. (Lin Ming) BZ 397 3505 3506Fixed a problem where two External declarations with the same name did not 3507cause an error (Lin Ming) BZ 509 3508 3509Implemented support for full TermArgs (adding Argx, Localx and method 3510invocation) for the ParameterData parameter to the LoadTable operator. (Lin 3511Ming) BZ 583,587 3512 3513---------------------------------------- 351419 December 2007. Summary of changes for version 20071219: 3515 35161) ACPI CA Core Subsystem: 3517 3518Implemented full support for deferred execution for the TermArg string 3519arguments for DataTableRegion. This enables forward references and full 3520operand resolution for the three string arguments. Similar to OperationRegion 3521deferred argument execution.) Lin Ming. BZ 430 3522 3523Implemented full argument resolution support for the BankValue argument to 3524BankField. Previously, only constants were supported, now any TermArg may be 3525used. Lin Ming BZ 387, 393 3526 3527Fixed a problem with AcpiGetDevices where the search of a branch of the 3528device tree could be terminated prematurely. In accordance with the ACPI 3529specification, the search down the current branch is terminated if a device 3530is both not present and not functional (instead of just not present.) Yakui 3531Zhao. 3532 3533Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 3534the underlying AML code changed the GPE enable registers. Now, any unknown 3535incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 3536instead of simply ignored. Rui Zhang. 3537 3538Fixed a problem with Index Fields where the Index register was incorrectly 3539limited to a maximum of 32 bits. Now any size may be used. 3540 3541Fixed a couple memory leaks associated with "implicit return" objects when 3542the AML Interpreter slack mode is enabled. Lin Ming BZ 349 3543 3544Example Code and Data Size: These are the sizes for the OS-independent 3545acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3546debug version of the code includes the debug output trace mechanism and has 3547a much larger code and data size. 3548 3549 Previous Release: 3550 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3551 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3552 Current Release: 3553 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 3554 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 3555 3556---------------------------------------- 355714 November 2007. Summary of changes for version 20071114: 3558 35591) ACPI CA Core Subsystem: 3560 3561Implemented event counters for each of the Fixed Events, the ACPI SCI 3562(interrupt) itself, and control methods executed. Named 3563AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 3564should be useful for debugging and statistics. 3565 3566Implemented a new external interface, AcpiGetStatistics, to retrieve the 3567contents of the various event counters. Returns the current values for 3568AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 3569AcpiMethodCount. The interface can be expanded in the future if new counters 3570are added. Device drivers should use this interface rather than access the 3571counters directly. 3572 3573Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 3574the ShortDivide function worked incorrectly, causing problems with the BCD 3575functions with large input values. A truncation from 64-bit to 32-bit 3576inadvertently occurred. Internal BZ 435. Lin Ming 3577 3578Fixed a problem with Index references passed as method arguments. References 3579passed as arguments to control methods were dereferenced immediately (before 3580control was passed to the called method). The references are now correctly 3581passed directly to the called method. BZ 5389. Lin Ming 3582 3583Fixed a problem with CopyObject used in conjunction with the Index operator. 3584The reference was incorrectly dereferenced before the copy. The reference is 3585now correctly copied. BZ 5391. Lin Ming 3586 3587Fixed a problem with Control Method references within Package objects. These 3588references are now correctly generated. This completes the package 3589construction overhaul that began in version 20071019. 3590 3591Example Code and Data Size: These are the sizes for the OS-independent 3592acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3593debug version of the code includes the debug output trace mechanism and has 3594a much larger code and data size. 3595 3596 Previous Release: 3597 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3598 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3599 Current Release: 3600 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 3601 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 3602 3603 36042) iASL Compiler/Disassembler and Tools: 3605 3606The AcpiExec utility now installs handlers for all of the predefined 3607Operation Region types. New types supported are: PCI_Config, CMOS, and 3608PCIBARTarget. 3609 3610Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 3611bit) address fields for the DSDT and FACS within the FADT were not being 3612used, causing truncation of the upper 32-bits of these addresses. Lin Ming 3613and Bob Moore 3614 3615---------------------------------------- 361619 October 2007. Summary of changes for version 20071019: 3617 36181) ACPI CA Core Subsystem: 3619 3620Fixed a problem with the Alias operator when the target of the alias is a 3621named ASL operator that opens a new scope -- Scope, Device, PowerResource, 3622Processor, and ThermalZone. In these cases, any children of the original 3623operator could not be accessed via the alias, potentially causing unexpected 3624AE_NOT_FOUND exceptions. (BZ 9067) 3625 3626Fixed a problem with the Package operator where all named references were 3627created as object references and left otherwise unresolved. According to the 3628ACPI specification, a Package can only contain Data Objects or references to 3629control methods. The implication is that named references to Data Objects 3630(Integer, Buffer, String, Package, BufferField, Field) should be resolved 3631immediately upon package creation. This is the approach taken with this 3632change. References to all other named objects (Methods, Devices, Scopes, 3633etc.) are all now properly created as reference objects. (BZ 5328) 3634 3635Reverted a change to Notify handling that was introduced in version 363620070508. This version changed the Notify handling from asynchronous to 3637fully synchronous (Device driver Notify handling with respect to the Notify 3638ASL operator). It was found that this change caused more problems than it 3639solved and was removed by most users. 3640 3641Fixed a problem with the Increment and Decrement operators where the type of 3642the target object could be unexpectedly and incorrectly changed. (BZ 353) 3643Lin Ming. 3644 3645Fixed a problem with the Load and LoadTable operators where the table 3646location within the namespace was ignored. Instead, the table was always 3647loaded into the root or current scope. Lin Ming. 3648 3649Fixed a problem with the Load operator when loading a table from a buffer 3650object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 3651 3652Fixed a problem with the Debug object where a store of a DdbHandle reference 3653object to the Debug object could cause a fault. 3654 3655Added a table checksum verification for the Load operator, in the case where 3656the load is from a buffer. (BZ 578). 3657 3658Implemented additional parameter validation for the LoadTable operator. The 3659length of the input strings SignatureString, OemIdString, and OemTableId are 3660now checked for maximum lengths. (BZ 582) Lin Ming. 3661 3662Example Code and Data Size: These are the sizes for the OS-independent 3663acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3664debug version of the code includes the debug output trace mechanism and has 3665a much larger code and data size. 3666 3667 Previous Release: 3668 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3669 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3670 Current Release: 3671 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 3672 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 3673 3674 36752) iASL Compiler/Disassembler: 3676 3677Fixed a problem where if a single file was specified and the file did not 3678exist, no error message was emitted. (Introduced with wildcard support in 3679version 20070917.) 3680 3681---------------------------------------- 368219 September 2007. Summary of changes for version 20070919: 3683 36841) ACPI CA Core Subsystem: 3685 3686Designed and implemented new external interfaces to install and remove 3687handlers for ACPI table-related events. Current events that are defined are 3688LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 3689they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 3690AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 3691 3692Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 3693(acpi_serialized option on Linux) could cause some systems to hang during 3694initialization. (Bob Moore) BZ 8171 3695 3696Fixed a problem where objects of certain types (Device, ThermalZone, 3697Processor, PowerResource) can be not found if they are declared and 3698referenced from within the same control method (Lin Ming) BZ 341 3699 3700Example Code and Data Size: These are the sizes for the OS-independent 3701acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3702debug version of the code includes the debug output trace mechanism and has 3703a much larger code and data size. 3704 3705 Previous Release: 3706 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3707 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3708 Current Release: 3709 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 3710 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 3711 3712 37132) iASL Compiler/Disassembler: 3714 3715Implemented support to allow multiple files to be compiled/disassembled in a 3716single invocation. This includes command line wildcard support for both the 3717Windows and Unix versions of the compiler. This feature simplifies the 3718disassembly and compilation of multiple ACPI tables in a single directory. 3719 3720---------------------------------------- 372108 May 2007. Summary of changes for version 20070508: 3722 37231) ACPI CA Core Subsystem: 3724 3725Implemented a Microsoft compatibility design change for the handling of the 3726Notify AML operator. Previously, notify handlers were dispatched and 3727executed completely asynchronously in a deferred thread. The new design 3728still executes the notify handlers in a different thread, but the original 3729thread that executed the Notify() now waits at a synchronization point for 3730the notify handler to complete. Some machines depend on a synchronous Notify 3731operator in order to operate correctly. 3732 3733Implemented support to allow Package objects to be passed as method 3734arguments to the external AcpiEvaluateObject interface. Previously, this 3735would return the AE_NOT_IMPLEMENTED exception. This feature had not been 3736implemented since there were no reserved control methods that required it 3737until recently. 3738 3739Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 3740contained invalid non-zero values in reserved fields could cause later 3741failures because these fields have meaning in later revisions of the FADT. 3742For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 3743are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 3744 3745Fixed a problem where the Global Lock handle was not properly updated if a 3746thread that acquired the Global Lock via executing AML code then attempted 3747to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 3748Liu. 3749 3750Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 3751could be corrupted if the interrupt being removed was at the head of the 3752list. Reported by Linn Crosetto. 3753 3754Example Code and Data Size: These are the sizes for the OS-independent 3755acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3756debug version of the code includes the debug output trace mechanism and has 3757a much larger code and data size. 3758 3759 Previous Release: 3760 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3761 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3762 Current Release: 3763 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 3764 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 3765 3766---------------------------------------- 376720 March 2007. Summary of changes for version 20070320: 3768 37691) ACPI CA Core Subsystem: 3770 3771Implemented a change to the order of interpretation and evaluation of AML 3772operand objects within the AML interpreter. The interpreter now evaluates 3773operands in the order that they appear in the AML stream (and the 3774corresponding ASL code), instead of in the reverse order (after the entire 3775operand list has been parsed). The previous behavior caused several subtle 3776incompatibilities with the Microsoft AML interpreter as well as being 3777somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 3778 3779Implemented a change to the ACPI Global Lock support. All interfaces to the 3780global lock now allow the same thread to acquire the lock multiple times. 3781This affects the AcpiAcquireGlobalLock external interface to the global lock 3782as well as the internal use of the global lock to support AML fields -- a 3783control method that is holding the global lock can now simultaneously access 3784AML fields that require global lock protection. Previously, in both cases, 3785this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 3786AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 3787Controller. There is no change to the behavior of the AML Acquire operator, 3788as this can already be used to acquire a mutex multiple times by the same 3789thread. BZ 8066. With assistance from Alexey Starikovskiy. 3790 3791Fixed a problem where invalid objects could be referenced in the AML 3792Interpreter after error conditions. During operand evaluation, ensure that 3793the internal "Return Object" field is cleared on error and only valid 3794pointers are stored there. Caused occasional access to deleted objects that 3795resulted in "large reference count" warning messages. Valery Podrezov. 3796 3797Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 3798deeply nested control method invocations. BZ 7873, local BZ 487. Valery 3799Podrezov. 3800 3801Fixed an internal problem with the handling of result objects on the 3802interpreter result stack. BZ 7872. Valery Podrezov. 3803 3804Removed obsolete code that handled the case where AML_NAME_OP is the target 3805of a reference (Reference.Opcode). This code was no longer necessary. BZ 38067874. Valery Podrezov. 3807 3808Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 3809remnant from the previously discontinued 16-bit support. 3810 3811Example Code and Data Size: These are the sizes for the OS-independent 3812acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3813debug version of the code includes the debug output trace mechanism and has 3814a much larger code and data size. 3815 3816 Previous Release: 3817 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3818 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3819 Current Release: 3820 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3821 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 3822 3823---------------------------------------- 382426 January 2007. Summary of changes for version 20070126: 3825 38261) ACPI CA Core Subsystem: 3827 3828Added the 2007 copyright to all module headers and signons. This affects 3829virtually every file in the ACPICA core subsystem, the iASL compiler, and 3830the utilities. 3831 3832Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 3833during a table load. A bad pointer was passed in the case where the DSDT is 3834overridden, causing a fault in this case. 3835 3836Example Code and Data Size: These are the sizes for the OS-independent 3837acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3838debug version of the code includes the debug output trace mechanism and has 3839a much larger code and data size. 3840 3841 Previous Release: 3842 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3843 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3844 Current Release: 3845 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3846 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3847 3848---------------------------------------- 384915 December 2006. Summary of changes for version 20061215: 3850 38511) ACPI CA Core Subsystem: 3852 3853Support for 16-bit ACPICA has been completely removed since it is no longer 3854necessary and it clutters the code. All 16-bit macros, types, and 3855conditional compiles have been removed, cleaning up and simplifying the code 3856across the entire subsystem. DOS support is no longer needed since the 3857bootable Linux firmware kit is now available. 3858 3859The handler for the Global Lock is now removed during AcpiTerminate to 3860enable a clean subsystem restart, via the implementation of the 3861AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 3862HP) 3863 3864Implemented enhancements to the multithreading support within the debugger 3865to enable improved multithreading debugging and evaluation of the subsystem. 3866(Valery Podrezov) 3867 3868Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 3869memory used during the execution, as well as the maximum memory consumed by 3870each of the various object types. (Valery Podrezov) 3871 3872Example Code and Data Size: These are the sizes for the OS-independent 3873acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3874debug version of the code includes the debug output trace mechanism and has 3875a much larger code and data size. 3876 3877 Previous Release: 3878 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3879 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3880 Current Release: 3881 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 3882 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 3883 3884 38852) iASL Compiler/Disassembler and Tools: 3886 3887AcpiExec: Implemented a new option (-m) to display full memory use 3888statistics upon subsystem/program termination. (Valery Podrezov) 3889 3890---------------------------------------- 389109 November 2006. Summary of changes for version 20061109: 3892 38931) ACPI CA Core Subsystem: 3894 3895Optimized the Load ASL operator in the case where the source operand is an 3896operation region. Simply map the operation region memory, instead of 3897performing a bytewise read. (Region must be of type SystemMemory, see 3898below.) 3899 3900Fixed the Load ASL operator for the case where the source operand is a 3901region field. A buffer object is also allowed as the source operand. BZ 480 3902 3903Fixed a problem where the Load ASL operator allowed the source operand to be 3904an operation region of any type. It is now restricted to regions of type 3905SystemMemory, as per the ACPI specification. BZ 481 3906 3907Additional cleanup and optimizations for the new Table Manager code. 3908 3909AcpiEnable will now fail if all of the required ACPI tables are not loaded 3910(FADT, FACS, DSDT). BZ 477 3911 3912Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 3913header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 3914manually optimized to be aligned and will not work if it is byte-packed. 3915 3916Example Code and Data Size: These are the sizes for the OS-independent 3917acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3918debug version of the code includes the debug output trace mechanism and has 3919a much larger code and data size. 3920 3921 Previous Release: 3922 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3923 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3924 Current Release: 3925 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3926 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3927 3928 39292) iASL Compiler/Disassembler and Tools: 3930 3931Fixed a problem where the presence of the _OSI predefined control method 3932within complex expressions could cause an internal compiler error. 3933 3934AcpiExec: Implemented full region support for multiple address spaces. 3935SpaceId is now part of the REGION object. BZ 429 3936 3937---------------------------------------- 393811 October 2006. Summary of changes for version 20061011: 3939 39401) ACPI CA Core Subsystem: 3941 3942Completed an AML interpreter performance enhancement for control method 3943execution. Previously a 2-pass parse/execution, control methods are now 3944completely parsed and executed in a single pass. This improves overall 3945interpreter performance by ~25%, reduces code size, and reduces CPU stack 3946use. (Valery Podrezov + interpreter changes in version 20051202 that 3947eliminated namespace loading during the pass one parse.) 3948 3949Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3950match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3951obtained and also checked for an ID match. 3952 3953Implemented additional support for the PCI _ADR execution: upsearch until a 3954device scope is found before executing _ADR. This allows PCI_Config 3955operation regions to be declared locally within control methods underneath 3956PCI device objects. 3957 3958Fixed a problem with a possible race condition between threads executing 3959AcpiWalkNamespace and the AML interpreter. This condition was removed by 3960modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3961entries created during any concurrent control method execution. An 3962additional namespace race condition is known to exist between 3963AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3964investigation. 3965 3966Restructured the AML ParseLoop function, breaking it into several 3967subfunctions in order to reduce CPU stack use and improve maintainability. 3968(Mikhail Kouzmich) 3969 3970AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3971of prefix handle and pathname. BZ 478 3972 3973Example Code and Data Size: These are the sizes for the OS-independent 3974acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3975debug version of the code includes the debug output trace mechanism and has 3976a much larger code and data size. 3977 3978 Previous Release: 3979 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3980 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3981 Current Release: 3982 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3983 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3984 39852) iASL Compiler/Disassembler and Tools: 3986 3987Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3988to restore original behavior. 3989 3990---------------------------------------- 399127 September 2006. Summary of changes for version 20060927: 3992 39931) ACPI CA Core Subsystem: 3994 3995Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3996These functions now use a spinlock for mutual exclusion and the interrupt 3997level indication flag is not needed. 3998 3999Fixed a problem with the Global Lock where the lock could appear to be 4000obtained before it is actually obtained. The global lock semaphore was 4001inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 4002Suietov. 4003 4004Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 4005a read from a buffer or region field. (BZ 458) Fiodor Suietov. 4006 4007Example Code and Data Size: These are the sizes for the OS-independent 4008acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4009debug version of the code includes the debug output trace mechanism and has 4010a much larger code and data size. 4011 4012 Previous Release: 4013 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 4014 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 4015 Current Release: 4016 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 4017 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 4018 4019 40202) iASL Compiler/Disassembler and Tools: 4021 4022Fixed a compilation problem with the pre-defined Resource Descriptor field 4023names where an "object does not exist" error could be incorrectly generated 4024if the parent ResourceTemplate pathname places the template within a 4025different namespace scope than the current scope. (BZ 7212) 4026 4027Fixed a problem where the compiler could hang after syntax errors detected 4028in an ElseIf construct. (BZ 453) 4029 4030Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 4031operator. An incorrect output filename was produced when this parameter was 4032a null string (""). Now, the original input filename is used as the AML 4033output filename, with an ".aml" extension. 4034 4035Implemented a generic batch command mode for the AcpiExec utility (execute 4036any AML debugger command) (Valery Podrezov). 4037 4038---------------------------------------- 403912 September 2006. Summary of changes for version 20060912: 4040 40411) ACPI CA Core Subsystem: 4042 4043Enhanced the implementation of the "serialized mode" of the interpreter 4044(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 4045specified, instead of creating a serialization semaphore per control method, 4046the interpreter lock is simply no longer released before a blocking 4047operation during control method execution. This effectively makes the AML 4048Interpreter single-threaded. The overhead of a semaphore per-method is 4049eliminated. 4050 4051Fixed a regression where an error was no longer emitted if a control method 4052attempts to create 2 objects of the same name. This once again returns 4053AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 4054will dynamically serialize the control method to possible prevent future 4055errors. (BZ 440) 4056 4057Integrated a fix for a problem with PCI Express HID detection in the PCI 4058Config Space setup procedure. (BZ 7145) 4059 4060Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 4061AcpiHwInitialize function - the FADT registers are now validated when the 4062table is loaded. 4063 4064Added two new warnings during FADT verification - 1) if the FADT is larger 4065than the largest known FADT version, and 2) if there is a mismatch between a 406632-bit block address and the 64-bit X counterpart (when both are non-zero.) 4067 4068Example Code and Data Size: These are the sizes for the OS-independent 4069acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4070debug version of the code includes the debug output trace mechanism and has 4071a much larger code and data size. 4072 4073 Previous Release: 4074 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 4075 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 4076 Current Release: 4077 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 4078 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 4079 4080 40812) iASL Compiler/Disassembler and Tools: 4082 4083Fixed a problem with the implementation of the Switch() operator where the 4084temporary variable was declared too close to the actual Switch, instead of 4085at method level. This could cause a problem if the Switch() operator is 4086within a while loop, causing an error on the second iteration. (BZ 460) 4087 4088Disassembler - fix for error emitted for unknown type for target of scope 4089operator. Now, ignore it and continue. 4090 4091Disassembly of an FADT now verifies the input FADT and reports any errors 4092found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 4093 4094Disassembly of raw data buffers with byte initialization data now prefixes 4095each output line with the current buffer offset. 4096 4097Disassembly of ASF! table now includes all variable-length data fields at 4098the end of some of the subtables. 4099 4100The disassembler now emits a comment if a buffer appears to be a 4101ResourceTemplate, but cannot be disassembled as such because the EndTag does 4102not appear at the very end of the buffer. 4103 4104AcpiExec - Added the "-t" command line option to enable the serialized mode 4105of the AML interpreter. 4106 4107---------------------------------------- 410831 August 2006. Summary of changes for version 20060831: 4109 41101) ACPI CA Core Subsystem: 4111 4112Miscellaneous fixes for the Table Manager: 4113- Correctly initialize internal common FADT for all 64-bit "X" fields 4114- Fixed a couple table mapping issues during table load 4115- Fixed a couple alignment issues for IA64 4116- Initialize input array to zero in AcpiInitializeTables 4117- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 4118AcpiGetTableByIndex 4119 4120Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 4121immediately disabled to prevent the waking GPE from firing again and to 4122prevent other wake GPEs from interrupting the wake process. 4123 4124Added the AcpiGpeCount global that tracks the number of processed GPEs, to 4125be used for debugging systems with a large number of ACPI interrupts. 4126 4127Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 4128both the ACPICA headers and the disassembler. 4129 4130Example Code and Data Size: These are the sizes for the OS-independent 4131acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4132debug version of the code includes the debug output trace mechanism and has 4133a much larger code and data size. 4134 4135 Previous Release: 4136 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 4137 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 4138 Current Release: 4139 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 4140 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 4141 4142 41432) iASL Compiler/Disassembler and Tools: 4144 4145Disassembler support for the DMAR ACPI table. 4146 4147---------------------------------------- 414823 August 2006. Summary of changes for version 20060823: 4149 41501) ACPI CA Core Subsystem: 4151 4152The Table Manager component has been completely redesigned and 4153reimplemented. The new design is much simpler, and reduces the overall code 4154and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 4155now possible to obtain the ACPI tables very early during kernel 4156initialization, even before dynamic memory management is initialized. 4157(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 4158 4159Obsolete ACPICA interfaces: 4160 4161- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 4162time). 4163- AcpiLoadTable: Not needed. 4164- AcpiUnloadTable: Not needed. 4165 4166New ACPICA interfaces: 4167 4168- AcpiInitializeTables: Must be called before the table manager can be used. 4169- AcpiReallocateRootTable: Used to transfer the root table to dynamically 4170allocated memory after it becomes available. 4171- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 4172in the RSDT/XSDT. 4173 4174Other ACPICA changes: 4175 4176- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 4177AcpiOsUnmapMemory to free this mapping. 4178- AcpiGetTable returns the actual mapped table. The mapping is managed 4179internally and must not be deleted by the caller. Use of this interface 4180causes no additional dynamic memory allocation. 4181- AcpiFindRootPointer: Support for physical addressing has been eliminated, 4182it appeared to be unused. 4183- The interface to AcpiOsMapMemory has changed to be consistent with the 4184other allocation interfaces. 4185- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 4186parameters. 4187- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 4188bit platforms. Was previously 64 bits on all platforms. 4189- The interface to the ACPI Global Lock acquire/release macros have changed 4190slightly since ACPICA no longer keeps a local copy of the FACS with a 4191constructed pointer to the actual global lock. 4192 4193Porting to the new table manager: 4194 4195- AcpiInitializeTables: Must be called once, and can be called anytime 4196during the OS initialization process. It allows the host to specify an area 4197of memory to be used to store the internal version of the RSDT/XSDT (root 4198table). This allows the host to access ACPI tables before memory management 4199is initialized and running. 4200- AcpiReallocateRootTable: Can be called after memory management is running 4201to copy the root table to a dynamically allocated array, freeing up the 4202scratch memory specified in the call to AcpiInitializeTables. 4203- AcpiSubsystemInitialize: This existing interface is independent of the 4204Table Manager, and does not have to be called before the Table Manager can 4205be used, it only must be called before the rest of ACPICA can be used. 4206- ACPI Tables: Some changes have been made to the names and structure of the 4207actbl.h and actbl1.h header files and may require changes to existing code. 4208For example, bitfields have been completely removed because of their lack of 4209portability across C compilers. 4210- Update interfaces to the Global Lock acquire/release macros if local 4211versions are used. (see acwin.h) 4212 4213Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 4214 4215New files: tbfind.c 4216 4217Example Code and Data Size: These are the sizes for the OS-independent 4218acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4219debug version of the code includes the debug output trace mechanism and has 4220a much larger code and data size. 4221 4222 Previous Release: 4223 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 4224 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 4225 Current Release: 4226 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 4227 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 4228 4229 42302) iASL Compiler/Disassembler and Tools: 4231 4232No changes for this release. 4233 4234---------------------------------------- 423521 July 2006. Summary of changes for version 20060721: 4236 42371) ACPI CA Core Subsystem: 4238 4239The full source code for the ASL test suite used to validate the iASL 4240compiler and the ACPICA core subsystem is being released with the ACPICA 4241source for the first time. The source is contained in a separate package and 4242consists of over 1100 files that exercise all ASL/AML operators. The package 4243should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 4244Suietov) 4245 4246Completed a new design and implementation for support of the ACPI Global 4247Lock. On the OS side, the global lock is now treated as a standard AML 4248mutex. Previously, multiple OS threads could "acquire" the global lock 4249simultaneously. However, this could cause the BIOS to be starved out of the 4250lock - especially in cases such as the Embedded Controller driver where 4251there is a tight coupling between the OS and the BIOS. 4252 4253Implemented an optimization for the ACPI Global Lock interrupt mechanism. 4254The Global Lock interrupt handler no longer queues the execution of a 4255separate thread to signal the global lock semaphore. Instead, the semaphore 4256is signaled directly from the interrupt handler. 4257 4258Implemented support within the AML interpreter for package objects that 4259contain a larger AML length (package list length) than the package element 4260count. In this case, the length of the package is truncated to match the 4261package element count. Some BIOS code apparently modifies the package length 4262on the fly, and this change supports this behavior. Provides compatibility 4263with the MS AML interpreter. (With assistance from Fiodor Suietov) 4264 4265Implemented a temporary fix for the BankValue parameter of a Bank Field to 4266support all constant values, now including the Zero and One opcodes. 4267Evaluation of this parameter must eventually be converted to a full TermArg 4268evaluation. A not-implemented error is now returned (temporarily) for non- 4269constant values for this parameter. 4270 4271Fixed problem reports (Fiodor Suietov) integrated: 4272- Fix for premature object deletion after CopyObject on Operation Region (BZ 4273350) 4274 4275Example Code and Data Size: These are the sizes for the OS-independent 4276acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4277debug version of the code includes the debug output trace mechanism and has 4278a much larger code and data size. 4279 4280 Previous Release: 4281 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 4282 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 4283 Current Release: 4284 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 4285 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 4286 4287 42882) iASL Compiler/Disassembler and Tools: 4289 4290No changes for this release. 4291 4292---------------------------------------- 429307 July 2006. Summary of changes for version 20060707: 4294 42951) ACPI CA Core Subsystem: 4296 4297Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 4298that do not allow the initialization of address pointers within packed 4299structures - even though the hardware itself may support misaligned 4300transfers. Some of the debug data structures are packed by default to 4301minimize size. 4302 4303Added an error message for the case where AcpiOsGetThreadId() returns zero. 4304A non-zero value is required by the core ACPICA code to ensure the proper 4305operation of AML mutexes and recursive control methods. 4306 4307The DSDT is now the only ACPI table that determines whether the AML 4308interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 4309the hooks for per-table 32/64 switching have been removed from the code. A 4310clarification to the ACPI specification is forthcoming in ACPI 3.0B. 4311 4312Fixed a possible leak of an OwnerID in the error path of 4313AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 4314deletion to a single place in AcpiTbUninstallTable to correct possible leaks 4315when using the AcpiTbDeleteTablesByType interface (with assistance from 4316Lance Ortiz.) 4317 4318Fixed a problem with Serialized control methods where the semaphore 4319associated with the method could be over-signaled after multiple method 4320invocations. 4321 4322Fixed two issues with the locking of the internal namespace data structure. 4323Both the Unload() operator and AcpiUnloadTable interface now lock the 4324namespace during the namespace deletion associated with the table unload 4325(with assistance from Linn Crosetto.) 4326 4327Fixed problem reports (Valery Podrezov) integrated: 4328- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 4329 4330Fixed problem reports (Fiodor Suietov) integrated: 4331- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 4332- On Address Space handler deletion, needless deactivation call (BZ 374) 4333- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 4334- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 4335(BZ 376) 4336- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 4337- Minimum Length of RSDT should be validated (BZ 379) 4338- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 4339Handler (BZ (380) 4340- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 4341(BZ 381) 4342 4343Example Code and Data Size: These are the sizes for the OS-independent 4344acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4345debug version of the code includes the debug output trace mechanism and has 4346a much larger code and data size. 4347 4348 Previous Release: 4349 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 4350 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 4351 Current Release: 4352 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 4353 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 4354 4355 43562) iASL Compiler/Disassembler and Tools: 4357 4358Fixed problem reports: 4359Compiler segfault when ASL contains a long (>1024) String declaration (BZ 4360436) 4361 4362---------------------------------------- 436323 June 2006. Summary of changes for version 20060623: 4364 43651) ACPI CA Core Subsystem: 4366 4367Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 4368allows the type to be customized to the host OS for improved efficiency 4369(since a spinlock is usually a very small object.) 4370 4371Implemented support for "ignored" bits in the ACPI registers. According to 4372the ACPI specification, these bits should be preserved when writing the 4373registers via a read/modify/write cycle. There are 3 bits preserved in this 4374manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 4375 4376Implemented the initial deployment of new OSL mutex interfaces. Since some 4377host operating systems have separate mutex and semaphore objects, this 4378feature was requested. The base code now uses mutexes (and the new mutex 4379interfaces) wherever a binary semaphore was used previously. However, for 4380the current release, the mutex interfaces are defined as macros to map them 4381to the existing semaphore interfaces. Therefore, no OSL changes are required 4382at this time. (See acpiosxf.h) 4383 4384Fixed several problems with the support for the control method SyncLevel 4385parameter. The SyncLevel now works according to the ACPI specification and 4386in concert with the Mutex SyncLevel parameter, since the current SyncLevel 4387is a property of the executing thread. Mutual exclusion for control methods 4388is now implemented with a mutex instead of a semaphore. 4389 4390Fixed three instances of the use of the C shift operator in the bitfield 4391support code (exfldio.c) to avoid the use of a shift value larger than the 4392target data width. The behavior of C compilers is undefined in this case and 4393can cause unpredictable results, and therefore the case must be detected and 4394avoided. (Fiodor Suietov) 4395 4396Added an info message whenever an SSDT or OEM table is loaded dynamically 4397via the Load() or LoadTable() ASL operators. This should improve debugging 4398capability since it will show exactly what tables have been loaded (beyond 4399the tables present in the RSDT/XSDT.) 4400 4401Example Code and Data Size: These are the sizes for the OS-independent 4402acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4403debug version of the code includes the debug output trace mechanism and has 4404a much larger code and data size. 4405 4406 Previous Release: 4407 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 4408 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 4409 Current Release: 4410 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 4411 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 4412 4413 44142) iASL Compiler/Disassembler and Tools: 4415 4416No changes for this release. 4417 4418---------------------------------------- 441908 June 2006. Summary of changes for version 20060608: 4420 44211) ACPI CA Core Subsystem: 4422 4423Converted the locking mutex used for the ACPI hardware to a spinlock. This 4424change should eliminate all problems caused by attempting to acquire a 4425semaphore at interrupt level, and it means that all ACPICA external 4426interfaces that directly access the ACPI hardware can be safely called from 4427interrupt level. OSL code that implements the semaphore interfaces should be 4428able to eliminate any workarounds for being called at interrupt level. 4429 4430Fixed a regression introduced in 20060526 where the ACPI device 4431initialization could be prematurely aborted with an AE_NOT_FOUND if a device 4432did not have an optional _INI method. 4433 4434Fixed an IndexField issue where a write to the Data Register should be 4435limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 4436Fiodor Suietov) 4437 4438Fixed problem reports (Valery Podrezov) integrated: 4439- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 4440 4441Fixed problem reports (Fiodor Suietov) integrated: 4442- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 4443 4444Removed four global mutexes that were obsolete and were no longer being 4445used. 4446 4447Example Code and Data Size: These are the sizes for the OS-independent 4448acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4449debug version of the code includes the debug output trace mechanism and has 4450a much larger code and data size. 4451 4452 Previous Release: 4453 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 4454 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 4455 Current Release: 4456 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 4457 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 4458 4459 44602) iASL Compiler/Disassembler and Tools: 4461 4462Fixed a fault when using -g option (get tables from registry) on Windows 4463machines. 4464 4465Fixed problem reports integrated: 4466- Generate error if CreateField NumBits parameter is zero. (BZ 405) 4467- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 4468Suietov) 4469- Global table revision override (-r) is ignored (BZ 413) 4470 4471---------------------------------------- 447226 May 2006. Summary of changes for version 20060526: 4473 44741) ACPI CA Core Subsystem: 4475 4476Restructured, flattened, and simplified the internal interfaces for 4477namespace object evaluation - resulting in smaller code, less CPU stack use, 4478and fewer interfaces. (With assistance from Mikhail Kouzmich) 4479 4480Fixed a problem with the CopyObject operator where the first parameter was 4481not typed correctly for the parser, interpreter, compiler, and disassembler. 4482Caused various errors and unexpected behavior. 4483 4484Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 4485produced incorrect results with some C compilers. Since the behavior of C 4486compilers when the shift value is larger than the datatype width is 4487apparently not well defined, the interpreter now detects this condition and 4488simply returns zero as expected in all such cases. (BZ 395) 4489 4490Fixed problem reports (Valery Podrezov) integrated: 4491- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 4492- Allow interpreter to handle nested method declarations (BZ 5361) 4493 4494Fixed problem reports (Fiodor Suietov) integrated: 4495- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 4496- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 4497- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 4498- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 4499- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 4500- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 4501- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 4502- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 4503- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 4504- Status of the Global Initialization Handler call not used (BZ 366) 4505- Incorrect object parameter to Global Initialization Handler (BZ 367) 4506 4507Example Code and Data Size: These are the sizes for the OS-independent 4508acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4509debug version of the code includes the debug output trace mechanism and has 4510a much larger code and data size. 4511 4512 Previous Release: 4513 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4514 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4515 Current Release: 4516 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 4517 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 4518 4519 45202) iASL Compiler/Disassembler and Tools: 4521 4522Modified the parser to allow the names IO, DMA, and IRQ to be used as 4523namespace identifiers with no collision with existing resource descriptor 4524macro names. This provides compatibility with other ASL compilers and is 4525most useful for disassembly/recompilation of existing tables without parse 4526errors. (With assistance from Thomas Renninger) 4527 4528Disassembler: fixed an incorrect disassembly problem with the 4529DataTableRegion and CopyObject operators. Fixed a possible fault during 4530disassembly of some Alias operators. 4531 4532---------------------------------------- 453312 May 2006. Summary of changes for version 20060512: 4534 45351) ACPI CA Core Subsystem: 4536 4537Replaced the AcpiOsQueueForExecution interface with a new interface named 4538AcpiOsExecute. The major difference is that the new interface does not have 4539a Priority parameter, this appeared to be useless and has been replaced by a 4540Type parameter. The Type tells the host what type of execution is being 4541requested, such as global lock handler, notify handler, GPE handler, etc. 4542This allows the host to queue and execute the request as appropriate for the 4543request type, possibly using different work queues and different priorities 4544for the various request types. This enables fixes for multithreading 4545deadlock problems such as BZ #5534, and will require changes to all existing 4546OS interface layers. (Alexey Starikovskiy and Bob Moore) 4547 4548Fixed a possible memory leak associated with the support for the so-called 4549"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 4550Suietov) 4551 4552Fixed a problem with the Load() operator where a table load from an 4553operation region could overwrite an internal table buffer by up to 7 bytes 4554and cause alignment faults on IPF systems. (With assistance from Luming Yu) 4555 4556Example Code and Data Size: These are the sizes for the OS-independent 4557acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4558debug version of the code includes the debug output trace mechanism and has 4559a much larger code and data size. 4560 4561 Previous Release: 4562 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4563 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4564 Current Release: 4565 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 4566 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 4567 4568 4569 45702) iASL Compiler/Disassembler and Tools: 4571 4572Disassembler: Implemented support to cross reference the internal namespace 4573and automatically generate ASL External() statements for symbols not defined 4574within the current table being disassembled. This will simplify the 4575disassembly and recompilation of interdependent tables such as SSDTs since 4576these statements will no longer have to be added manually. 4577 4578Disassembler: Implemented experimental support to automatically detect 4579invocations of external control methods and generate appropriate External() 4580statements. This is problematic because the AML cannot be correctly parsed 4581until the number of arguments for each control method is known. Currently, 4582standalone method invocations and invocations as the source operand of a 4583Store() statement are supported. 4584 4585Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 4586LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 4587LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 4588more readable and likely closer to the original ASL source. 4589 4590---------------------------------------- 459121 April 2006. Summary of changes for version 20060421: 4592 45931) ACPI CA Core Subsystem: 4594 4595Removed a device initialization optimization introduced in 20051216 where 4596the _STA method was not run unless an _INI was also present for the same 4597device. This optimization could cause problems because it could allow _INI 4598methods to be run within a not-present device subtree. (If a not-present 4599device had no _INI, _STA would not be run, the not-present status would not 4600be discovered, and the children of the device would be incorrectly 4601traversed.) 4602 4603Implemented a new _STA optimization where namespace subtrees that do not 4604contain _INI are identified and ignored during device initialization. 4605Selectively running _STA can significantly improve boot time on large 4606machines (with assistance from Len Brown.) 4607 4608Implemented support for the device initialization case where the returned 4609_STA flags indicate a device not-present but functioning. In this case, _INI 4610is not run, but the device children are examined for presence, as per the 4611ACPI specification. 4612 4613Implemented an additional change to the IndexField support in order to 4614conform to MS behavior. The value written to the Index Register is not 4615simply a byte offset, it is a byte offset in units of the access width of 4616the parent Index Field. (Fiodor Suietov) 4617 4618Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 4619interface is called during the creation of all AML operation regions, and 4620allows the host OS to exert control over what addresses it will allow the 4621AML code to access. Operation Regions whose addresses are disallowed will 4622cause a runtime exception when they are actually accessed (will not affect 4623or abort table loading.) See oswinxf or osunixxf for an example 4624implementation. 4625 4626Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 4627interface allows the host OS to match the various "optional" 4628interface/behavior strings for the _OSI predefined control method as 4629appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 4630for an example implementation. 4631 4632Restructured and corrected various problems in the exception handling code 4633paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 4634(with assistance from Takayoshi Kochi.) 4635 4636Modified the Linux source converter to ignore quoted string literals while 4637converting identifiers from mixed to lower case. This will correct problems 4638with the disassembler and other areas where such strings must not be 4639modified. 4640 4641The ACPI_FUNCTION_* macros no longer require quotes around the function 4642name. This allows the Linux source converter to convert the names, now that 4643the converter ignores quoted strings. 4644 4645Example Code and Data Size: These are the sizes for the OS-independent 4646acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4647debug version of the code includes the debug output trace mechanism and has 4648a much larger code and data size. 4649 4650 Previous Release: 4651 4652 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4653 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4654 Current Release: 4655 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 4656 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 4657 4658 46592) iASL Compiler/Disassembler and Tools: 4660 4661Implemented 3 new warnings for iASL, and implemented multiple warning levels 4662(w2 flag). 4663 46641) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 4665WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 4666check for the possible timeout, a warning is issued. 4667 46682) Useless operators: If an ASL operator does not specify an optional target 4669operand and it also does not use the function return value from the 4670operator, a warning is issued since the operator effectively does nothing. 4671 46723) Unreferenced objects: If a namespace object is created, but never 4673referenced, a warning is issued. This is a warning level 2 since there are 4674cases where this is ok, such as when a secondary table is loaded that uses 4675the unreferenced objects. Even so, care is taken to only flag objects that 4676don't look like they will ever be used. For example, the reserved methods 4677(starting with an underscore) are usually not referenced because it is 4678expected that the OS will invoke them. 4679 4680---------------------------------------- 468131 March 2006. Summary of changes for version 20060331: 4682 46831) ACPI CA Core Subsystem: 4684 4685Implemented header file support for the following additional ACPI tables: 4686ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 4687all current and known ACPI tables are now defined in the ACPICA headers and 4688are available for use by device drivers and other software. 4689 4690Implemented support to allow tables that contain ACPI names with invalid 4691characters to be loaded. Previously, this would cause the table load to 4692fail, but since there are several known cases of such tables on existing 4693machines, this change was made to enable ACPI support for them. Also, this 4694matches the behavior of the Microsoft ACPI implementation. 4695 4696Fixed a couple regressions introduced during the memory optimization in the 469720060317 release. The namespace node definition required additional 4698reorganization and an internal datatype that had been changed to 8-bit was 4699restored to 32-bit. (Valery Podrezov) 4700 4701Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 4702could be passed through to AcpiOsReleaseObject which is unexpected. Such 4703null pointers are now trapped and ignored, matching the behavior of the 4704previous implementation before the deployment of AcpiOsReleaseObject. 4705(Valery Podrezov, Fiodor Suietov) 4706 4707Fixed a memory mapping leak during the deletion of a SystemMemory operation 4708region where a cached memory mapping was not deleted. This became a 4709noticeable problem for operation regions that are defined within frequently 4710used control methods. (Dana Meyers) 4711 4712Reorganized the ACPI table header files into two main files: one for the 4713ACPI tables consumed by the ACPICA core, and another for the miscellaneous 4714ACPI tables that are consumed by the drivers and other software. The various 4715FADT definitions were merged into one common section and three different 4716tables (ACPI 1.0, 1.0+, and 2.0) 4717 4718Example Code and Data Size: These are the sizes for the OS-independent 4719acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4720debug version of the code includes the debug output trace mechanism and has 4721a much larger code and data size. 4722 4723 Previous Release: 4724 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4725 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4726 Current Release: 4727 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 4728 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 4729 4730 47312) iASL Compiler/Disassembler and Tools: 4732 4733Disassembler: Implemented support to decode and format all non-AML ACPI 4734tables (tables other than DSDTs and SSDTs.) This includes the new tables 4735added to the ACPICA headers, therefore all current and known ACPI tables are 4736supported. 4737 4738Disassembler: The change to allow ACPI names with invalid characters also 4739enables the disassembly of such tables. Invalid characters within names are 4740changed to '*' to make the name printable; the iASL compiler will still 4741generate an error for such names, however, since this is an invalid ACPI 4742character. 4743 4744Implemented an option for AcpiXtract (-a) to extract all tables found in the 4745input file. The default invocation extracts only the DSDTs and SSDTs. 4746 4747Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 4748makefile for the AcpiXtract utility. 4749 4750---------------------------------------- 475117 March 2006. Summary of changes for version 20060317: 4752 47531) ACPI CA Core Subsystem: 4754 4755Implemented the use of a cache object for all internal namespace nodes. 4756Since there are about 1000 static nodes in a typical system, this will 4757decrease memory use for cache implementations that minimize per-allocation 4758overhead (such as a slab allocator.) 4759 4760Removed the reference count mechanism for internal namespace nodes, since it 4761was deemed unnecessary. This reduces the size of each namespace node by 4762about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 4763and 32 bytes for the 64-bit case. 4764 4765Optimized several internal data structures to reduce object size on 64-bit 4766platforms by packing data within the 64-bit alignment. This includes the 4767frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 4768instances corresponding to the namespace objects. 4769 4770Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 4771and "Windows 2006". 4772 4773Split the allocation tracking mechanism out to a separate file, from 4774utalloc.c to uttrack.c. This mechanism appears to be only useful for 4775application-level code. Kernels may wish to not include uttrack.c in 4776distributions. 4777 4778Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 4779code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 4780macros.) 4781 4782Code and Data Size: These are the sizes for the acpica.lib produced by the 4783Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4784driver or OSPM code. The debug version of the code includes the debug output 4785trace mechanism and has a much larger code and data size. Note that these 4786values will vary depending on the efficiency of the compiler and the 4787compiler options used during generation. 4788 4789 Previous Release: 4790 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4791 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4792 Current Release: 4793 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 4794 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 4795 4796 47972) iASL Compiler/Disassembler and Tools: 4798 4799Implemented an ANSI C version of the acpixtract utility. This version will 4800automatically extract the DSDT and all SSDTs from the input acpidump text 4801file and dump the binary output to separate files. It can also display a 4802summary of the input file including the headers for each table found and 4803will extract any single ACPI table, with any signature. (See 4804source/tools/acpixtract) 4805 4806---------------------------------------- 480710 March 2006. Summary of changes for version 20060310: 4808 48091) ACPI CA Core Subsystem: 4810 4811Tagged all external interfaces to the subsystem with the new 4812ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 4813kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 4814macro. The default definition is NULL. 4815 4816Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 4817This allows the host to define this as necessary to simplify kernel 4818integration. The default definition is ACPI_NATIVE_UINT. 4819 4820Fixed two interpreter problems related to error processing, the deletion of 4821objects, and placing invalid pointers onto the internal operator result 4822stack. BZ 6028, 6151 (Valery Podrezov) 4823 4824Increased the reference count threshold where a warning is emitted for large 4825reference counts in order to eliminate unnecessary warnings on systems with 4826large namespaces (especially 64-bit.) Increased the value from 0x400 to 48270x800. 4828 4829Due to universal disagreement as to the meaning of the 'c' in the calloc() 4830function, the ACPI_MEM_CALLOCATE macro has been renamed to 4831ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 4832ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 4833ACPI_FREE. 4834 4835Code and Data Size: These are the sizes for the acpica.lib produced by the 4836Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4837driver or OSPM code. The debug version of the code includes the debug output 4838trace mechanism and has a much larger code and data size. Note that these 4839values will vary depending on the efficiency of the compiler and the 4840compiler options used during generation. 4841 4842 Previous Release: 4843 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4844 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4845 Current Release: 4846 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4847 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 4848 4849 48502) iASL Compiler/Disassembler: 4851 4852Disassembler: implemented support for symbolic resource descriptor 4853references. If a CreateXxxxField operator references a fixed offset within a 4854resource descriptor, a name is assigned to the descriptor and the offset is 4855translated to the appropriate resource tag and pathname. The addition of 4856this support brings the disassembled code very close to the original ASL 4857source code and helps eliminate run-time errors when the disassembled code 4858is modified (and recompiled) in such a way as to invalidate the original 4859fixed offsets. 4860 4861Implemented support for a Descriptor Name as the last parameter to the ASL 4862Register() macro. This parameter was inadvertently left out of the ACPI 4863specification, and will be added for ACPI 3.0b. 4864 4865Fixed a problem where the use of the "_OSI" string (versus the full path 4866"\_OSI") caused an internal compiler error. ("No back ptr to op") 4867 4868Fixed a problem with the error message that occurs when an invalid string is 4869used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 4870The correct message is now displayed. 4871 4872---------------------------------------- 487317 February 2006. Summary of changes for version 20060217: 4874 48751) ACPI CA Core Subsystem: 4876 4877Implemented a change to the IndexField support to match the behavior of the 4878Microsoft AML interpreter. The value written to the Index register is now a 4879byte offset, no longer an index based upon the width of the Data register. 4880This should fix IndexField problems seen on some machines where the Data 4881register is not exactly one byte wide. The ACPI specification will be 4882clarified on this point. 4883 4884Fixed a problem where several resource descriptor types could overrun the 4885internal descriptor buffer due to size miscalculation: VendorShort, 4886VendorLong, and Interrupt. This was noticed on IA64 machines, but could 4887affect all platforms. 4888 4889Fixed a problem where individual resource descriptors were misaligned within 4890the internal buffer, causing alignment faults on IA64 platforms. 4891 4892Code and Data Size: These are the sizes for the acpica.lib produced by the 4893Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 4894driver or OSPM code. The debug version of the code includes the debug output 4895trace mechanism and has a much larger code and data size. Note that these 4896values will vary depending on the efficiency of the compiler and the 4897compiler options used during generation. 4898 4899 Previous Release: 4900 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4901 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4902 Current Release: 4903 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 4904 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 4905 4906 49072) iASL Compiler/Disassembler: 4908 4909Implemented support for new reserved names: _WDG and _WED are Microsoft 4910extensions for Windows Instrumentation Management, _TDL is a new ACPI- 4911defined method (Throttling Depth Limit.) 4912 4913Fixed a problem where a zero-length VendorShort or VendorLong resource 4914descriptor was incorrectly emitted as a descriptor of length one. 4915 4916---------------------------------------- 491710 February 2006. Summary of changes for version 20060210: 4918 49191) ACPI CA Core Subsystem: 4920 4921Removed a couple of extraneous ACPI_ERROR messages that appeared during 4922normal execution. These became apparent after the conversion from 4923ACPI_DEBUG_PRINT. 4924 4925Fixed a problem where the CreateField operator could hang if the BitIndex or 4926NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4927 4928Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4929failed with an exception. This also fixes a couple of related RefOf and 4930DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4931 4932Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4933AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 49345480) 4935 4936Implemented a memory cleanup at the end of the execution of each iteration 4937of an AML While() loop, preventing the accumulation of outstanding objects. 4938(Valery Podrezov, BZ 5427) 4939 4940Eliminated a chunk of duplicate code in the object resolution code. (Valery 4941Podrezov, BZ 5336) 4942 4943Fixed several warnings during the 64-bit code generation. 4944 4945The AcpiSrc source code conversion tool now inserts one line of whitespace 4946after an if() statement that is followed immediately by a comment, improving 4947readability of the Linux code. 4948 4949Code and Data Size: The current and previous library sizes for the core 4950subsystem are shown below. These are the code and data sizes for the 4951acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4952values do not include any ACPI driver or OSPM code. The debug version of the 4953code includes the debug output trace mechanism and has a much larger code 4954and data size. Note that these values will vary depending on the efficiency 4955of the compiler and the compiler options used during generation. 4956 4957 Previous Release: 4958 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4959 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4960 Current Release: 4961 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4962 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4963 4964 49652) iASL Compiler/Disassembler: 4966 4967Fixed a problem with the disassembly of a BankField operator with a complex 4968expression for the BankValue parameter. 4969 4970---------------------------------------- 497127 January 2006. Summary of changes for version 20060127: 4972 49731) ACPI CA Core Subsystem: 4974 4975Implemented support in the Resource Manager to allow unresolved namestring 4976references within resource package objects for the _PRT method. This support 4977is in addition to the previously implemented unresolved reference support 4978within the AML parser. If the interpreter slack mode is enabled, these 4979unresolved references will be passed through to the caller as a NULL package 4980entry. 4981 4982Implemented and deployed new macros and functions for error and warning 4983messages across the subsystem. These macros are simpler and generate less 4984code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4985ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4986macros remain defined to allow ACPI drivers time to migrate to the new 4987macros. 4988 4989Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4990Acquire/Release Lock OSL interfaces. 4991 4992Fixed a problem where Alias ASL operators are sometimes not correctly 4993resolved, in both the interpreter and the iASL compiler. 4994 4995Fixed several problems with the implementation of the ConcatenateResTemplate 4996ASL operator. As per the ACPI specification, zero length buffers are now 4997treated as a single EndTag. One-length buffers always cause a fatal 4998exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4999cause a fatal exception. 5000 5001Fixed a possible structure overwrite in the AcpiGetObjectInfo external 5002interface. (With assistance from Thomas Renninger) 5003 5004Code and Data Size: The current and previous library sizes for the core 5005subsystem are shown below. These are the code and data sizes for the 5006acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5007values do not include any ACPI driver or OSPM code. The debug version of the 5008code includes the debug output trace mechanism and has a much larger code 5009and data size. Note that these values will vary depending on the efficiency 5010of the compiler and the compiler options used during generation. 5011 5012 Previous Release: 5013 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 5014 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 5015 Current Release: 5016 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 5017 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 5018 5019 50202) iASL Compiler/Disassembler: 5021 5022Fixed an internal error that was generated for any forward references to ASL 5023Alias objects. 5024 5025---------------------------------------- 502613 January 2006. Summary of changes for version 20060113: 5027 50281) ACPI CA Core Subsystem: 5029 5030Added 2006 copyright to all module headers and signons. This affects 5031virtually every file in the ACPICA core subsystem, iASL compiler, and the 5032utilities. 5033 5034Enhanced the ACPICA error reporting in order to simplify user migration to 5035the non-debug version of ACPICA. Replaced all instances of the 5036ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 5037levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 5038respectively. This preserves all error and warning messages in the non-debug 5039version of the ACPICA code (this has been referred to as the "debug lite" 5040option.) Over 200 cases were converted to create a total of over 380 5041error/warning messages across the ACPICA code. This increases the code and 5042data size of the default non-debug version of the code somewhat (about 13K), 5043but all error/warning reporting may be disabled if desired (and code 5044eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 5045configuration option. The size of the debug version of ACPICA remains about 5046the same. 5047 5048Fixed a memory leak within the AML Debugger "Set" command. One object was 5049not properly deleted for every successful invocation of the command. 5050 5051Code and Data Size: The current and previous library sizes for the core 5052subsystem are shown below. These are the code and data sizes for the 5053acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5054values do not include any ACPI driver or OSPM code. The debug version of the 5055code includes the debug output trace mechanism and has a much larger code 5056and data size. Note that these values will vary depending on the efficiency 5057of the compiler and the compiler options used during generation. 5058 5059 Previous Release: 5060 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 5061 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 5062 Current Release: 5063 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 5064 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 5065 5066 50672) iASL Compiler/Disassembler: 5068 5069The compiler now officially supports the ACPI 3.0a specification that was 5070released on December 30, 2005. (Specification is available at www.acpi.info) 5071 5072---------------------------------------- 507316 December 2005. Summary of changes for version 20051216: 5074 50751) ACPI CA Core Subsystem: 5076 5077Implemented optional support to allow unresolved names within ASL Package 5078objects. A null object is inserted in the package when a named reference 5079cannot be located in the current namespace. Enabled via the interpreter 5080slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 5081that contain such code. 5082 5083Implemented an optimization to the initialization sequence that can improve 5084boot time. During ACPI device initialization, the _STA method is now run if 5085and only if the _INI method exists. The _STA method is used to determine if 5086the device is present; An _INI can only be run if _STA returns present, but 5087it is a waste of time to run the _STA method if the _INI does not exist. 5088(Prototype and assistance from Dong Wei) 5089 5090Implemented use of the C99 uintptr_t for the pointer casting macros if it is 5091available in the current compiler. Otherwise, the default (void *) cast is 5092used as before. 5093 5094Fixed some possible memory leaks found within the execution path of the 5095Break, Continue, If, and CreateField operators. (Valery Podrezov) 5096 5097Fixed a problem introduced in the 20051202 release where an exception is 5098generated during method execution if a control method attempts to declare 5099another method. 5100 5101Moved resource descriptor string constants that are used by both the AML 5102disassembler and AML debugger to the common utilities directory so that 5103these components are independent. 5104 5105Implemented support in the AcpiExec utility (-e switch) to globally ignore 5106exceptions during control method execution (method is not aborted.) 5107 5108Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 5109generation. 5110 5111Code and Data Size: The current and previous library sizes for the core 5112subsystem are shown below. These are the code and data sizes for the 5113acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5114values do not include any ACPI driver or OSPM code. The debug version of the 5115code includes the debug output trace mechanism and has a much larger code 5116and data size. Note that these values will vary depending on the efficiency 5117of the compiler and the compiler options used during generation. 5118 5119 Previous Release: 5120 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 5121 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 5122 Current Release: 5123 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 5124 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 5125 5126 51272) iASL Compiler/Disassembler: 5128 5129Fixed a problem where a CPU stack overflow fault could occur if a recursive 5130method call was made from within a Return statement. 5131 5132---------------------------------------- 513302 December 2005. Summary of changes for version 20051202: 5134 51351) ACPI CA Core Subsystem: 5136 5137Modified the parsing of control methods to no longer create namespace 5138objects during the first pass of the parse. Objects are now created only 5139during the execute phase, at the moment the namespace creation operator is 5140encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 5141should eliminate ALREADY_EXISTS exceptions seen on some machines where 5142reentrant control methods are protected by an AML mutex. The mutex will now 5143correctly block multiple threads from attempting to create the same object 5144more than once. 5145 5146Increased the number of available Owner Ids for namespace object tracking 5147from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 5148some machines with a large number of ACPI tables (either static or dynamic). 5149 5150Fixed a problem with the AcpiExec utility where a fault could occur when the 5151-b switch (batch mode) is used. 5152 5153Enhanced the namespace dump routine to output the owner ID for each 5154namespace object. 5155 5156Code and Data Size: The current and previous library sizes for the core 5157subsystem are shown below. These are the code and data sizes for the 5158acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5159values do not include any ACPI driver or OSPM code. The debug version of the 5160code includes the debug output trace mechanism and has a much larger code 5161and data size. Note that these values will vary depending on the efficiency 5162of the compiler and the compiler options used during generation. 5163 5164 Previous Release: 5165 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 5166 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5167 Current Release: 5168 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 5169 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 5170 5171 51722) iASL Compiler/Disassembler: 5173 5174Fixed a parse error during compilation of certain Switch/Case constructs. To 5175simplify the parse, the grammar now allows for multiple Default statements 5176and this error is now detected and flagged during the analysis phase. 5177 5178Disassembler: The disassembly now includes the contents of the original 5179table header within a comment at the start of the file. This includes the 5180name and version of the original ASL compiler. 5181 5182---------------------------------------- 518317 November 2005. Summary of changes for version 20051117: 5184 51851) ACPI CA Core Subsystem: 5186 5187Fixed a problem in the AML parser where the method thread count could be 5188decremented below zero if any errors occurred during the method parse phase. 5189This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 5190This also fixed a related regression with the mechanism that detects and 5191corrects methods that cannot properly handle reentrancy (related to the 5192deployment of the new OwnerId mechanism.) 5193 5194Eliminated the pre-parsing of control methods (to detect errors) during 5195table load. Related to the problem above, this was causing unwind issues if 5196any errors occurred during the parse, and it seemed to be overkill. A table 5197load should not be aborted if there are problems with any single control 5198method, thus rendering this feature rather pointless. 5199 5200Fixed a problem with the new table-driven resource manager where an internal 5201buffer overflow could occur for small resource templates. 5202 5203Implemented a new external interface, AcpiGetVendorResource. This interface 5204will find and return a vendor-defined resource descriptor within a _CRS or 5205_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 5206 5207Removed the length limit (200) on string objects as per the upcoming ACPI 52083.0A specification. This affects the following areas of the interpreter: 1) 5209any implicit conversion of a Buffer to a String, 2) a String object result 5210of the ASL Concatentate operator, 3) the String object result of the ASL 5211ToString operator. 5212 5213Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 5214on a semaphore object would incorrectly timeout. This allows the 5215multithreading features of the AcpiExec utility to work properly under 5216Windows. 5217 5218Updated the Linux makefiles for the iASL compiler and AcpiExec to include 5219the recently added file named "utresrc.c". 5220 5221Code and Data Size: The current and previous library sizes for the core 5222subsystem are shown below. These are the code and data sizes for the 5223acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5224values do not include any ACPI driver or OSPM code. The debug version of the 5225code includes the debug output trace mechanism and has a much larger code 5226and data size. Note that these values will vary depending on the efficiency 5227of the compiler and the compiler options used during generation. 5228 5229 Previous Release: 5230 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 5231 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5232 Current Release: 5233 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 5234 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5235 5236 52372) iASL Compiler/Disassembler: 5238 5239Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 5240specification. For the iASL compiler, this means that string literals within 5241the source ASL can be of any length. 5242 5243Enhanced the listing output to dump the AML code for resource descriptors 5244immediately after the ASL code for each descriptor, instead of in a block at 5245the end of the entire resource template. 5246 5247Enhanced the compiler debug output to dump the entire original parse tree 5248constructed during the parse phase, before any transforms are applied to the 5249tree. The transformed tree is dumped also. 5250 5251---------------------------------------- 525202 November 2005. Summary of changes for version 20051102: 5253 52541) ACPI CA Core Subsystem: 5255 5256Modified the subsystem initialization sequence to improve GPE support. The 5257GPE initialization has been split into two parts in order to defer execution 5258of the _PRW methods (Power Resources for Wake) until after the hardware is 5259fully initialized and the SCI handler is installed. This allows the _PRW 5260methods to access fields protected by the Global Lock. This will fix systems 5261where a NO_GLOBAL_LOCK exception has been seen during initialization. 5262 5263Converted the ACPI internal object disassemble and display code within the 5264AML debugger to fully table-driven operation, reducing code size and 5265increasing maintainability. 5266 5267Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 5268in the 20051021 release. 5269 5270Implemented support for "local" internal ACPI object types within the 5271debugger "Object" command and the AcpiWalkNamespace external interfaces. 5272These local types include RegionFields, BankFields, IndexFields, Alias, and 5273reference objects. 5274 5275Moved common AML resource handling code into a new file, "utresrc.c". This 5276code is shared by both the Resource Manager and the AML Debugger. 5277 5278Code and Data Size: The current and previous library sizes for the core 5279subsystem are shown below. These are the code and data sizes for the 5280acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5281values do not include any ACPI driver or OSPM code. The debug version of the 5282code includes the debug output trace mechanism and has a much larger code 5283and data size. Note that these values will vary depending on the efficiency 5284of the compiler and the compiler options used during generation. 5285 5286 Previous Release: 5287 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 5288 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 5289 Current Release: 5290 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 5291 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 5292 5293 52942) iASL Compiler/Disassembler: 5295 5296Fixed a problem with very large initializer lists (more than 4000 elements) 5297for both Buffer and Package objects where the parse stack could overflow. 5298 5299Enhanced the pre-compile source code scan for non-ASCII characters to ignore 5300characters within comment fields. The scan is now always performed and is no 5301longer optional, detecting invalid characters within a source file 5302immediately rather than during the parse phase or later. 5303 5304Enhanced the ASL grammar definition to force early reductions on all list- 5305style grammar elements so that the overall parse stack usage is greatly 5306reduced. This should improve performance and reduce the possibility of parse 5307stack overflow. 5308 5309Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 5310with the addition of a %expected statement, the compiler generates from 5311source with no warnings. 5312 5313Fixed a possible segment fault in the disassembler if the input filename 5314does not contain a "dot" extension (Thomas Renninger). 5315 5316---------------------------------------- 531721 October 2005. Summary of changes for version 20051021: 5318 53191) ACPI CA Core Subsystem: 5320 5321Implemented support for the EM64T and other x86-64 processors. This 5322essentially entails recognizing that these processors support non-aligned 5323memory transfers. Previously, all 64-bit processors were assumed to lack 5324hardware support for non-aligned transfers. 5325 5326Completed conversion of the Resource Manager to nearly full table-driven 5327operation. Specifically, the resource conversion code (convert AML to 5328internal format and the reverse) and the debug code to dump internal 5329resource descriptors are fully table-driven, reducing code and data size and 5330improving maintainability. 5331 5332The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 5333on 64-bit processors instead of a fixed 32-bit word. (With assistance from 5334Alexey Starikovskiy) 5335 5336Implemented support within the resource conversion code for the Type- 5337Specific byte within the various ACPI 3.0 *WordSpace macros. 5338 5339Fixed some issues within the resource conversion code for the type-specific 5340flags for both Memory and I/O address resource descriptors. For Memory, 5341implemented support for the MTP and TTP flags. For I/O, split the TRS and 5342TTP flags into two separate fields. 5343 5344Code and Data Size: The current and previous library sizes for the core 5345subsystem are shown below. These are the code and data sizes for the 5346acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5347values do not include any ACPI driver or OSPM code. The debug version of the 5348code includes the debug output trace mechanism and has a much larger code 5349and data size. Note that these values will vary depending on the efficiency 5350of the compiler and the compiler options used during generation. 5351 5352 Previous Release: 5353 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 5354 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 5355 Current Release: 5356 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 5357 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 5358 5359 5360 53612) iASL Compiler/Disassembler: 5362 5363Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 5364corresponding ResourceSource string was not also present in a resource 5365descriptor declaration. This restriction caused problems with existing 5366AML/ASL code that includes the Index byte without the string. When such AML 5367was disassembled, it could not be compiled without modification. Further, 5368the modified code created a resource template with a different size than the 5369original, breaking code that used fixed offsets into the resource template 5370buffer. 5371 5372Removed a recent feature of the disassembler to ignore a lone ResourceIndex 5373byte. This byte is now emitted if present so that the exact AML can be 5374reproduced when the disassembled code is recompiled. 5375 5376Improved comments and text alignment for the resource descriptor code 5377emitted by the disassembler. 5378 5379Implemented disassembler support for the ACPI 3.0 AccessSize field within a 5380Register() resource descriptor. 5381 5382---------------------------------------- 538330 September 2005. Summary of changes for version 20050930: 5384 53851) ACPI CA Core Subsystem: 5386 5387Completed a major overhaul of the Resource Manager code - specifically, 5388optimizations in the area of the AML/internal resource conversion code. The 5389code has been optimized to simplify and eliminate duplicated code, CPU stack 5390use has been decreased by optimizing function parameters and local 5391variables, and naming conventions across the manager have been standardized 5392for clarity and ease of maintenance (this includes function, parameter, 5393variable, and struct/typedef names.) The update may force changes in some 5394driver code, depending on how resources are handled by the host OS. 5395 5396All Resource Manager dispatch and information tables have been moved to a 5397single location for clarity and ease of maintenance. One new file was 5398created, named "rsinfo.c". 5399 5400The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 5401guarantee that the argument is not evaluated twice, making them less prone 5402to macro side-effects. However, since there exists the possibility of 5403additional stack use if a particular compiler cannot optimize them (such as 5404in the debug generation case), the original macros are optionally available. 5405Note that some invocations of the return_VALUE macro may now cause size 5406mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 5407eliminate these. (From Randy Dunlap) 5408 5409Implemented a new mechanism to enable debug tracing for individual control 5410methods. A new external interface, AcpiDebugTrace, is provided to enable 5411this mechanism. The intent is to allow the host OS to easily enable and 5412disable tracing for problematic control methods. This interface can be 5413easily exposed to a user or debugger interface if desired. See the file 5414psxface.c for details. 5415 5416AcpiUtCallocate will now return a valid pointer if a length of zero is 5417specified - a length of one is used and a warning is issued. This matches 5418the behavior of AcpiUtAllocate. 5419 5420Code and Data Size: The current and previous library sizes for the core 5421subsystem are shown below. These are the code and data sizes for the 5422acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5423values do not include any ACPI driver or OSPM code. The debug version of the 5424code includes the debug output trace mechanism and has a much larger code 5425and data size. Note that these values will vary depending on the efficiency 5426of the compiler and the compiler options used during generation. 5427 5428 Previous Release: 5429 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 5430 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 5431 Current Release: 5432 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 5433 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 5434 5435 54362) iASL Compiler/Disassembler: 5437 5438A remark is issued if the effective compile-time length of a package or 5439buffer is zero. Previously, this was a warning. 5440 5441---------------------------------------- 544216 September 2005. Summary of changes for version 20050916: 5443 54441) ACPI CA Core Subsystem: 5445 5446Fixed a problem within the Resource Manager where support for the Generic 5447Register descriptor was not fully implemented. This descriptor is now fully 5448recognized, parsed, disassembled, and displayed. 5449 5450Completely restructured the Resource Manager code to utilize table-driven 5451dispatch and lookup, eliminating many of the large switch() statements. This 5452reduces overall subsystem code size and code complexity. Affects the 5453resource parsing and construction, disassembly, and debug dump output. 5454 5455Cleaned up and restructured the debug dump output for all resource 5456descriptors. Improved readability of the output and reduced code size. 5457 5458Fixed a problem where changes to internal data structures caused the 5459optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 5460 5461Code and Data Size: The current and previous library sizes for the core 5462subsystem are shown below. These are the code and data sizes for the 5463acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 5464values do not include any ACPI driver or OSPM code. The debug version of the 5465code includes the debug output trace mechanism and has a much larger code 5466and data size. Note that these values will vary depending on the efficiency 5467of the compiler and the compiler options used during generation. 5468 5469 Previous Release: 5470 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 5471 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 5472 Current Release: 5473 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 5474 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 5475 5476 54772) iASL Compiler/Disassembler: 5478 5479Updated the disassembler to automatically insert an EndDependentFn() macro 5480into the ASL stream if this macro is missing in the original AML code, 5481simplifying compilation of the resulting ASL module. 5482 5483Fixed a problem in the disassembler where a disassembled ResourceSource 5484string (within a large resource descriptor) was not surrounded by quotes and 5485not followed by a comma, causing errors when the resulting ASL module was 5486compiled. Also, escape sequences within a ResourceSource string are now 5487handled correctly (especially "\\") 5488 5489---------------------------------------- 549002 September 2005. Summary of changes for version 20050902: 5491 54921) ACPI CA Core Subsystem: 5493 5494Fixed a problem with the internal Owner ID allocation and deallocation 5495mechanisms for control method execution and recursive method invocation. 5496This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 5497messages seen on some systems. Recursive method invocation depth is 5498currently limited to 255. (Alexey Starikovskiy) 5499 5500Completely eliminated all vestiges of support for the "module-level 5501executable code" until this support is fully implemented and debugged. This 5502should eliminate the NO_RETURN_VALUE exceptions seen during table load on 5503some systems that invoke this support. 5504 5505Fixed a problem within the resource manager code where the transaction flags 5506for a 64-bit address descriptor were handled incorrectly in the type- 5507specific flag byte. 5508 5509Consolidated duplicate code within the address descriptor resource manager 5510code, reducing overall subsystem code size. 5511 5512Fixed a fault when using the AML debugger "disassemble" command to 5513disassemble individual control methods. 5514 5515Removed references to the "release_current" directory within the Unix 5516release package. 5517 5518Code and Data Size: The current and previous core subsystem library sizes 5519are shown below. These are the code and data sizes for the acpica.lib 5520produced by the Microsoft Visual C++ 6.0 compiler. These values do not 5521include any ACPI driver or OSPM code. The debug version of the code includes 5522the debug output trace mechanism and has a much larger code and data size. 5523Note that these values will vary depending on the efficiency of the compiler 5524and the compiler options used during generation. 5525 5526 Previous Release: 5527 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5528 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5529 Current Release: 5530 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 5531 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 5532 5533 55342) iASL Compiler/Disassembler: 5535 5536Implemented an error check for illegal duplicate values in the interrupt and 5537dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 5538Interrupt(). 5539 5540Implemented error checking for the Irq() and IrqNoFlags() macros to detect 5541too many values in the interrupt list (16 max) and invalid values in the 5542list (range 0 - 15) 5543 5544The maximum length string literal within an ASL file is now restricted to 5545200 characters as per the ACPI specification. 5546 5547Fixed a fault when using the -ln option (generate namespace listing). 5548 5549Implemented an error check to determine if a DescriptorName within a 5550resource descriptor has already been used within the current scope. 5551 5552---------------------------------------- 555315 August 2005. Summary of changes for version 20050815: 5554 55551) ACPI CA Core Subsystem: 5556 5557Implemented a full bytewise compare to determine if a table load request is 5558attempting to load a duplicate table. The compare is performed if the table 5559signatures and table lengths match. This will allow different tables with 5560the same OEM Table ID and revision to be loaded - probably against the ACPI 5561specification, but discovered in the field nonetheless. 5562 5563Added the changes.txt logfile to each of the zipped release packages. 5564 5565Code and Data Size: Current and previous core subsystem library sizes are 5566shown below. These are the code and data sizes for the acpica.lib produced 5567by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5568any ACPI driver or OSPM code. The debug version of the code includes the 5569debug output trace mechanism and has a much larger code and data size. Note 5570that these values will vary depending on the efficiency of the compiler and 5571the compiler options used during generation. 5572 5573 Previous Release: 5574 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5575 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5576 Current Release: 5577 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5578 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 5579 5580 55812) iASL Compiler/Disassembler: 5582 5583Fixed a problem where incorrect AML code could be generated for Package 5584objects if optimization is disabled (via the -oa switch). 5585 5586Fixed a problem with where incorrect AML code is generated for variable- 5587length packages when the package length is not specified and the number of 5588initializer values is greater than 255. 5589 5590 5591---------------------------------------- 559229 July 2005. Summary of changes for version 20050729: 5593 55941) ACPI CA Core Subsystem: 5595 5596Implemented support to ignore an attempt to install/load a particular ACPI 5597table more than once. Apparently there exists BIOS code that repeatedly 5598attempts to load the same SSDT upon certain events. With assistance from 5599Venkatesh Pallipadi. 5600 5601Restructured the main interface to the AML parser in order to correctly 5602handle all exceptional conditions. This will prevent leakage of the OwnerId 5603resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 5604machines. With assistance from Alexey Starikovskiy. 5605 5606Support for "module level code" has been disabled in this version due to a 5607number of issues that have appeared on various machines. The support can be 5608enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 5609compilation. When the issues are fully resolved, the code will be enabled by 5610default again. 5611 5612Modified the internal functions for debug print support to define the 5613FunctionName parameter as a (const char *) for compatibility with compiler 5614built-in macros such as __FUNCTION__, etc. 5615 5616Linted the entire ACPICA source tree for both 32-bit and 64-bit. 5617 5618Implemented support to display an object count summary for the AML Debugger 5619commands Object and Methods. 5620 5621Code and Data Size: Current and previous core subsystem library sizes are 5622shown below. These are the code and data sizes for the acpica.lib produced 5623by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5624any ACPI driver or OSPM code. The debug version of the code includes the 5625debug output trace mechanism and has a much larger code and data size. Note 5626that these values will vary depending on the efficiency of the compiler and 5627the compiler options used during generation. 5628 5629 Previous Release: 5630 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5631 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5632 Current Release: 5633 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 5634 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 5635 5636 56372) iASL Compiler/Disassembler: 5638 5639Fixed a regression that appeared in the 20050708 version of the compiler 5640where an error message was inadvertently emitted for invocations of the _OSI 5641reserved control method. 5642 5643---------------------------------------- 564408 July 2005. Summary of changes for version 20050708: 5645 56461) ACPI CA Core Subsystem: 5647 5648The use of the CPU stack in the debug version of the subsystem has been 5649considerably reduced. Previously, a debug structure was declared in every 5650function that used the debug macros. This structure has been removed in 5651favor of declaring the individual elements as parameters to the debug 5652functions. This reduces the cumulative stack use during nested execution of 5653ACPI function calls at the cost of a small increase in the code size of the 5654debug version of the subsystem. With assistance from Alexey Starikovskiy and 5655Len Brown. 5656 5657Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 5658headers to define a macro that will return the current function name at 5659runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 5660the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 5661compiler-dependent header, the function name is saved on the CPU stack (one 5662pointer per function.) This mechanism is used because apparently there 5663exists no standard ANSI-C defined macro that that returns the function name. 5664 5665Redesigned and reimplemented the "Owner ID" mechanism used to track 5666namespace objects created/deleted by ACPI tables and control method 5667execution. A bitmap is now used to allocate and free the IDs, thus solving 5668the wraparound problem present in the previous implementation. The size of 5669the namespace node descriptor was reduced by 2 bytes as a result (Alexey 5670Starikovskiy). 5671 5672Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 5673flag definitions within the headers for the predefined ACPI tables. These 5674have been replaced by UINT8_BIT in order to increase the code portability of 5675the subsystem. If the use of UINT8 remains a problem, we may be forced to 5676eliminate bitfields entirely because of a lack of portability. 5677 5678Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 5679is a frequently used function and this improvement increases the performance 5680of the entire subsystem (Alexey Starikovskiy). 5681 5682Fixed several possible memory leaks and the inverse - premature object 5683deletion (Alexey Starikovskiy). 5684 5685Code and Data Size: Current and previous core subsystem library sizes are 5686shown below. These are the code and data sizes for the acpica.lib produced 5687by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5688any ACPI driver or OSPM code. The debug version of the code includes the 5689debug output trace mechanism and has a much larger code and data size. Note 5690that these values will vary depending on the efficiency of the compiler and 5691the compiler options used during generation. 5692 5693 Previous Release: 5694 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5695 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5696 Current Release: 5697 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 5698 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 5699 5700---------------------------------------- 570124 June 2005. Summary of changes for version 20050624: 5702 57031) ACPI CA Core Subsystem: 5704 5705Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 5706the host-defined cache object. This allows the OSL implementation to define 5707and type this object in any manner desired, simplifying the OSL 5708implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 5709Linux, and should be defined in the OS-specific header file for other 5710operating systems as required. 5711 5712Changed the interface to AcpiOsAcquireObject to directly return the 5713requested object as the function return (instead of ACPI_STATUS.) This 5714change was made for performance reasons, since this is the purpose of the 5715interface in the first place. AcpiOsAcquireObject is now similar to the 5716AcpiOsAllocate interface. 5717 5718Implemented a new AML debugger command named Businfo. This command displays 5719information about all devices that have an associate _PRT object. The _ADR, 5720_HID, _UID, and _CID are displayed for these devices. 5721 5722Modified the initialization sequence in AcpiInitializeSubsystem to call the 5723OSL interface AcpiOslInitialize first, before any local initialization. This 5724change was required because the global initialization now calls OSL 5725interfaces. 5726 5727Enhanced the Dump command to display the entire contents of Package objects 5728(including all sub-objects and their values.) 5729 5730Restructured the code base to split some files because of size and/or 5731because the code logically belonged in a separate file. New files are listed 5732below. All makefiles and project files included in the ACPI CA release have 5733been updated. 5734 utilities/utcache.c /* Local cache interfaces */ 5735 utilities/utmutex.c /* Local mutex support */ 5736 utilities/utstate.c /* State object support */ 5737 interpreter/parser/psloop.c /* Main AML parse loop */ 5738 5739Code and Data Size: Current and previous core subsystem library sizes are 5740shown below. These are the code and data sizes for the acpica.lib produced 5741by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5742any ACPI driver or OSPM code. The debug version of the code includes the 5743debug output trace mechanism and has a much larger code and data size. Note 5744that these values will vary depending on the efficiency of the compiler and 5745the compiler options used during generation. 5746 5747 Previous Release: 5748 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5749 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5750 Current Release: 5751 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 5752 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 5753 5754 57552) iASL Compiler/Disassembler: 5756 5757Fixed a regression introduced in version 20050513 where the use of a Package 5758object within a Case() statement caused a compile time exception. The 5759original behavior has been restored (a Match() operator is emitted.) 5760 5761---------------------------------------- 576217 June 2005. Summary of changes for version 20050617: 5763 57641) ACPI CA Core Subsystem: 5765 5766Moved the object cache operations into the OS interface layer (OSL) to allow 5767the host OS to handle these operations if desired (for example, the Linux 5768OSL will invoke the slab allocator). This support is optional; the compile 5769time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 5770code in the ACPI CA core. The new OSL interfaces are shown below. See 5771utalloc.c for an example implementation, and acpiosxf.h for the exact 5772interface definitions. With assistance from Alexey Starikovskiy. 5773 AcpiOsCreateCache 5774 AcpiOsDeleteCache 5775 AcpiOsPurgeCache 5776 AcpiOsAcquireObject 5777 AcpiOsReleaseObject 5778 5779Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 5780and restore a flags parameter. This fits better with many OS lock models. 5781Note: the current execution state (interrupt handler or not) is no longer 5782passed to these interfaces. If necessary, the OSL must determine this state 5783by itself, a simple and fast operation. With assistance from Alexey 5784Starikovskiy. 5785 5786Fixed a problem in the ACPI table handling where a valid XSDT was assumed 5787present if the revision of the RSDP was 2 or greater. According to the ACPI 5788specification, the XSDT is optional in all cases, and the table manager 5789therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 5790Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 5791only the RSDT. 5792 5793Fixed an interpreter problem with the Mid() operator in the case of an input 5794string where the resulting output string is of zero length. It now correctly 5795returns a valid, null terminated string object instead of a string object 5796with a null pointer. 5797 5798Fixed a problem with the control method argument handling to allow a store 5799to an Arg object that already contains an object of type Device. The Device 5800object is now correctly overwritten. Previously, an error was returned. 5801 5802 5803Enhanced the debugger Find command to emit object values in addition to the 5804found object pathnames. The output format is the same as the dump namespace 5805command. 5806 5807Enhanced the debugger Set command. It now has the ability to set the value 5808of any Named integer object in the namespace (Previously, only method locals 5809and args could be set.) 5810 5811Code and Data Size: Current and previous core subsystem library sizes are 5812shown below. These are the code and data sizes for the acpica.lib produced 5813by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5814any ACPI driver or OSPM code. The debug version of the code includes the 5815debug output trace mechanism and has a much larger code and data size. Note 5816that these values will vary depending on the efficiency of the compiler and 5817the compiler options used during generation. 5818 5819 Previous Release: 5820 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5821 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5822 Current Release: 5823 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 5824 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 5825 5826 58272) iASL Compiler/Disassembler: 5828 5829Fixed a regression in the disassembler where if/else/while constructs were 5830output incorrectly. This problem was introduced in the previous release 5831(20050526). This problem also affected the single-step disassembly in the 5832debugger. 5833 5834Fixed a problem where compiling the reserved _OSI method would randomly (but 5835rarely) produce compile errors. 5836 5837Enhanced the disassembler to emit compilable code in the face of incorrect 5838AML resource descriptors. If the optional ResourceSourceIndex is present, 5839but the ResourceSource is not, do not emit the ResourceSourceIndex in the 5840disassembly. Otherwise, the resulting code cannot be compiled without 5841errors. 5842 5843---------------------------------------- 584426 May 2005. Summary of changes for version 20050526: 5845 58461) ACPI CA Core Subsystem: 5847 5848Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 5849the module level (not within a control method.) These opcodes are executed 5850exactly once at the time the table is loaded. This type of code was legal up 5851until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 5852order to provide backwards compatibility with earlier BIOS implementations. 5853This eliminates the "Encountered executable code at module level" warning 5854that was previously generated upon detection of such code. 5855 5856Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 5857inadvertently be generated during the lookup of namespace objects in the 5858second pass parse of ACPI tables and control methods. It appears that this 5859problem could occur during the resolution of forward references to namespace 5860objects. 5861 5862Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 5863corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 5864allows the deadlock detection debug code to be compiled out in the normal 5865case, improving mutex performance (and overall subsystem performance) 5866considerably. 5867 5868Implemented a handful of miscellaneous fixes for possible memory leaks on 5869error conditions and error handling control paths. These fixes were 5870suggested by FreeBSD and the Coverity Prevent source code analysis tool. 5871 5872Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 5873to prevent a fault in this error case. 5874 5875Code and Data Size: Current and previous core subsystem library sizes are 5876shown below. These are the code and data sizes for the acpica.lib produced 5877by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5878any ACPI driver or OSPM code. The debug version of the code includes the 5879debug output trace mechanism and has a much larger code and data size. Note 5880that these values will vary depending on the efficiency of the compiler and 5881the compiler options used during generation. 5882 5883 Previous Release: 5884 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5885 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5886 Current Release: 5887 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 5888 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 5889 5890 58912) iASL Compiler/Disassembler: 5892 5893Implemented support to allow Type 1 and Type 2 ASL operators to appear at 5894the module level (not within a control method.) These operators will be 5895executed once at the time the table is loaded. This type of code was legal 5896up until the release of ACPI 2.0B (2002) and is now supported by the iASL 5897compiler in order to provide backwards compatibility with earlier BIOS ASL 5898code. 5899 5900The ACPI integer width (specified via the table revision ID or the -r 5901override, 32 or 64 bits) is now used internally during compile-time constant 5902folding to ensure that constants are truncated to 32 bits if necessary. 5903Previously, the revision ID value was only emitted in the AML table header. 5904 5905An error message is now generated for the Mutex and Method operators if the 5906SyncLevel parameter is outside the legal range of 0 through 15. 5907 5908Fixed a problem with the Method operator ParameterTypes list handling (ACPI 59093.0). Previously, more than 2 types or 2 arguments generated a syntax error. 5910The actual underlying implementation of method argument typechecking is 5911still under development, however. 5912 5913---------------------------------------- 591413 May 2005. Summary of changes for version 20050513: 5915 59161) ACPI CA Core Subsystem: 5917 5918Implemented support for PCI Express root bridges -- added support for device 5919PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 5920 5921The interpreter now automatically truncates incoming 64-bit constants to 32 5922bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5923also affects the iASL compiler constant folding. (Note: as per below, the 5924iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5925 5926Fixed a problem where string and buffer objects with "static" pointers 5927(pointers to initialization data within an ACPI table) were not handled 5928consistently. The internal object copy operation now always copies the data 5929to a newly allocated buffer, regardless of whether the source object is 5930static or not. 5931 5932Fixed a problem with the FromBCD operator where an implicit result 5933conversion was improperly performed while storing the result to the target 5934operand. Since this is an "explicit conversion" operator, the implicit 5935conversion should never be performed on the output. 5936 5937Fixed a problem with the CopyObject operator where a copy to an existing 5938named object did not always completely overwrite the existing object stored 5939at name. Specifically, a buffer-to-buffer copy did not delete the existing 5940buffer. 5941 5942Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5943structs for consistency. 5944 5945Code and Data Size: Current and previous core subsystem library sizes are 5946shown below. These are the code and data sizes for the acpica.lib produced 5947by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5948any ACPI driver or OSPM code. The debug version of the code includes the 5949debug output trace mechanism and has a much larger code and data size. Note 5950that these values will vary depending on the efficiency of the compiler and 5951the compiler options used during generation. 5952 5953 Previous Release: 5954 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5955 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5956 Current Release: (Same sizes) 5957 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5958 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5959 5960 59612) iASL Compiler/Disassembler: 5962 5963The compiler now emits a warning if an attempt is made to generate a 64-bit 5964integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5965is truncated to 32 bits. 5966 5967Fixed a problem with large package objects: if the static length of the 5968package is greater than 255, the "variable length package" opcode is 5969emitted. Previously, this caused an error. This requires an update to the 5970ACPI spec, since it currently (incorrectly) states that packages larger than 5971255 elements are not allowed. 5972 5973The disassembler now correctly handles variable length packages and packages 5974larger than 255 elements. 5975 5976---------------------------------------- 597708 April 2005. Summary of changes for version 20050408: 5978 59791) ACPI CA Core Subsystem: 5980 5981Fixed three cases in the interpreter where an "index" argument to an ASL 5982function was still (internally) 32 bits instead of the required 64 bits. 5983This was the Index argument to the Index, Mid, and Match operators. 5984 5985The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5986not a POSIX-defined function and not present in most kernel-level C 5987libraries. All references to the C library strupr function have been removed 5988from the headers. 5989 5990Completed the deployment of static functions/prototypes. All prototypes with 5991the static attribute have been moved from the headers to the owning C file. 5992 5993Implemented an extract option (-e) for the AcpiBin utility (AML binary 5994utility). This option allows the utility to extract individual ACPI tables 5995from the output of AcpiDmp. It provides the same functionality of the 5996acpixtract.pl perl script without the worry of setting the correct perl 5997options. AcpiBin runs on Windows and has not yet been generated/validated in 5998the Linux/Unix environment (but should be soon). 5999 6000Updated and fixed the table dump option for AcpiBin (-d). This option 6001converts a single ACPI table to a hex/ascii file, similar to the output of 6002AcpiDmp. 6003 6004Code and Data Size: Current and previous core subsystem library sizes are 6005shown below. These are the code and data sizes for the acpica.lib produced 6006by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6007any ACPI driver or OSPM code. The debug version of the code includes the 6008debug output trace mechanism and has a much larger code and data size. Note 6009that these values will vary depending on the efficiency of the compiler and 6010the compiler options used during generation. 6011 6012 Previous Release: 6013 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 6014 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 6015 Current Release: 6016 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 6017 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 6018 6019 60202) iASL Compiler/Disassembler: 6021 6022Disassembler fix: Added a check to ensure that the table length found in the 6023ACPI table header within the input file is not longer than the actual input 6024file size. This indicates some kind of file or table corruption. 6025 6026---------------------------------------- 602729 March 2005. Summary of changes for version 20050329: 6028 60291) ACPI CA Core Subsystem: 6030 6031An error is now generated if an attempt is made to create a Buffer Field of 6032length zero (A CreateField with a length operand of zero.) 6033 6034The interpreter now issues a warning whenever executable code at the module 6035level is detected during ACPI table load. This will give some idea of the 6036prevalence of this type of code. 6037 6038Implemented support for references to named objects (other than control 6039methods) within package objects. 6040 6041Enhanced package object output for the debug object. Package objects are now 6042completely dumped, showing all elements. 6043 6044Enhanced miscellaneous object output for the debug object. Any object can 6045now be written to the debug object (for example, a device object can be 6046written, and the type of the object will be displayed.) 6047 6048The "static" qualifier has been added to all local functions across both the 6049core subsystem and the iASL compiler. 6050 6051The number of "long" lines (> 80 chars) within the source has been 6052significantly reduced, by about 1/3. 6053 6054Cleaned up all header files to ensure that all CA/iASL functions are 6055prototyped (even static functions) and the formatting is consistent. 6056 6057Two new header files have been added, acopcode.h and acnames.h. 6058 6059Removed several obsolete functions that were no longer used. 6060 6061Code and Data Size: Current and previous core subsystem library sizes are 6062shown below. These are the code and data sizes for the acpica.lib produced 6063by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6064any ACPI driver or OSPM code. The debug version of the code includes the 6065debug output trace mechanism and has a much larger code and data size. Note 6066that these values will vary depending on the efficiency of the compiler and 6067the compiler options used during generation. 6068 6069 Previous Release: 6070 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6071 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 6072 Current Release: 6073 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 6074 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 6075 6076 6077 60782) iASL Compiler/Disassembler: 6079 6080Fixed a problem with the resource descriptor generation/support. For the 6081ResourceSourceIndex and the ResourceSource fields, both must be present, or 6082both must be not present - can't have one without the other. 6083 6084The compiler now returns non-zero from the main procedure if any errors have 6085occurred during the compilation. 6086 6087 6088---------------------------------------- 608909 March 2005. Summary of changes for version 20050309: 6090 60911) ACPI CA Core Subsystem: 6092 6093The string-to-buffer implicit conversion code has been modified again after 6094a change to the ACPI specification. In order to match the behavior of the 6095other major ACPI implementation, the target buffer is no longer truncated if 6096the source string is smaller than an existing target buffer. This change 6097requires an update to the ACPI spec, and should eliminate the recent 6098AE_AML_BUFFER_LIMIT issues. 6099 6100The "implicit return" support was rewritten to a new algorithm that solves 6101the general case. Rather than attempt to determine when a method is about to 6102exit, the result of every ASL operator is saved momentarily until the very 6103next ASL operator is executed. Therefore, no matter how the method exits, 6104there will always be a saved implicit return value. This feature is only 6105enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 6106AE_AML_NO_RETURN_VALUE errors when enabled. 6107 6108Implemented implicit conversion support for the predicate (operand) of the 6109If, Else, and While operators. String and Buffer arguments are automatically 6110converted to Integers. 6111 6112Changed the string-to-integer conversion behavior to match the new ACPI 6113errata: "If no integer object exists, a new integer is created. The ASCII 6114string is interpreted as a hexadecimal constant. Each string character is 6115interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 6116with the first character as the most significant digit, and ending with the 6117first non-hexadecimal character or end-of-string." This means that the first 6118non-hex character terminates the conversion and this is the code that was 6119changed. 6120 6121Fixed a problem where the ObjectType operator would fail (fault) when used 6122on an Index of a Package which pointed to a null package element. The 6123operator now properly returns zero (Uninitialized) in this case. 6124 6125Fixed a problem where the While operator used excessive memory by not 6126properly popping the result stack during execution. There was no memory leak 6127after execution, however. (Code provided by Valery Podrezov.) 6128 6129Fixed a problem where references to control methods within Package objects 6130caused the method to be invoked, instead of producing a reference object 6131pointing to the method. 6132 6133Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 6134improve performance and reduce code size. (Code provided by Alexey 6135Starikovskiy.) 6136 6137Code and Data Size: Current and previous core subsystem library sizes are 6138shown below. These are the code and data sizes for the acpica.lib produced 6139by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6140any ACPI driver or OSPM code. The debug version of the code includes the 6141debug output trace mechanism and has a much larger code and data size. Note 6142that these values will vary depending on the efficiency of the compiler and 6143the compiler options used during generation. 6144 6145 Previous Release: 6146 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6147 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 6148 Current Release: 6149 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6150 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 6151 6152 61532) iASL Compiler/Disassembler: 6154 6155Fixed a problem with the Return operator with no arguments. Since the AML 6156grammar for the byte encoding requires an operand for the Return opcode, the 6157compiler now emits a Return(Zero) for this case. An ACPI specification 6158update has been written for this case. 6159 6160For tables other than the DSDT, namepath optimization is automatically 6161disabled. This is because SSDTs can be loaded anywhere in the namespace, the 6162compiler has no knowledge of where, and thus cannot optimize namepaths. 6163 6164Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 6165inadvertently omitted from the ACPI specification, and will require an 6166update to the spec. 6167 6168The source file scan for ASCII characters is now optional (-a). This change 6169was made because some vendors place non-ascii characters within comments. 6170However, the scan is simply a brute-force byte compare to ensure all 6171characters in the file are in the range 0x00 to 0x7F. 6172 6173Fixed a problem with the CondRefOf operator where the compiler was 6174inappropriately checking for the existence of the target. Since the point of 6175the operator is to check for the existence of the target at run-time, the 6176compiler no longer checks for the target existence. 6177 6178Fixed a problem where errors generated from the internal AML interpreter 6179during constant folding were not handled properly, causing a fault. 6180 6181Fixed a problem with overly aggressive range checking for the Stall 6182operator. The valid range (max 255) is now only checked if the operand is of 6183type Integer. All other operand types cannot be statically checked. 6184 6185Fixed a problem where control method references within the RefOf, DeRefOf, 6186and ObjectType operators were not treated properly. They are now treated as 6187actual references, not method invocations. 6188 6189Fixed and enhanced the "list namespace" option (-ln). This option was broken 6190a number of releases ago. 6191 6192Improved error handling for the Field, IndexField, and BankField operators. 6193The compiler now cleanly reports and recovers from errors in the field 6194component (FieldUnit) list. 6195 6196Fixed a disassembler problem where the optional ResourceDescriptor fields 6197TRS and TTP were not always handled correctly. 6198 6199Disassembler - Comments in output now use "//" instead of "/*" 6200 6201---------------------------------------- 620228 February 2005. Summary of changes for version 20050228: 6203 62041) ACPI CA Core Subsystem: 6205 6206Fixed a problem where the result of an Index() operator (an object 6207reference) must increment the reference count on the target object for the 6208life of the object reference. 6209 6210Implemented AML Interpreter and Debugger support for the new ACPI 3.0 6211Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 6212resource descriptors. 6213 6214Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 6215Space Descriptor" string, indicating interpreter support for the descriptors 6216above. 6217 6218Implemented header support for the new ACPI 3.0 FADT flag bits. 6219 6220Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 6221status/enable registers. 6222 6223Updated header support for the MADT processor local Apic struct and MADT 6224platform interrupt source struct for new ACPI 3.0 fields. 6225 6226Implemented header support for the SRAT and SLIT ACPI tables. 6227 6228Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 6229at runtime. 6230 6231Code and Data Size: Current and previous core subsystem library sizes are 6232shown below. These are the code and data sizes for the acpica.lib produced 6233by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6234any ACPI driver or OSPM code. The debug version of the code includes the 6235debug output trace mechanism and has a much larger code and data size. Note 6236that these values will vary depending on the efficiency of the compiler and 6237the compiler options used during generation. 6238 6239 Previous Release: 6240 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 6241 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 6242 Current Release: 6243 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6244 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 6245 6246 62472) iASL Compiler/Disassembler: 6248 6249Fixed a problem with the internal 64-bit String-to-integer conversion with 6250strings less than two characters long. 6251 6252Fixed a problem with constant folding where the result of the Index() 6253operator can not be considered a constant. This means that Index() cannot be 6254a type3 opcode and this will require an update to the ACPI specification. 6255 6256Disassembler: Implemented support for the TTP, MTP, and TRS resource 6257descriptor fields. These fields were inadvertently ignored and not output in 6258the disassembly of the resource descriptor. 6259 6260 6261 ---------------------------------------- 626211 February 2005. Summary of changes for version 20050211: 6263 62641) ACPI CA Core Subsystem: 6265 6266Implemented ACPI 3.0 support for implicit conversion within the Match() 6267operator. MatchObjects can now be of type integer, buffer, or string instead 6268of just type integer. Package elements are implicitly converted to the type 6269of the MatchObject. This change aligns the behavior of Match() with the 6270behavior of the other logical operators (LLess(), etc.) It also requires an 6271errata change to the ACPI specification as this support was intended for 6272ACPI 3.0, but was inadvertently omitted. 6273 6274Fixed a problem with the internal implicit "to buffer" conversion. Strings 6275that are converted to buffers will cause buffer truncation if the string is 6276smaller than the target buffer. Integers that are converted to buffers will 6277not cause buffer truncation, only zero extension (both as per the ACPI 6278spec.) The problem was introduced when code was added to truncate the 6279buffer, but this should not be performed in all cases, only the string case. 6280 6281Fixed a problem with the Buffer and Package operators where the interpreter 6282would get confused if two such operators were used as operands to an ASL 6283operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 6284stack was not being popped after the execution of these operators, resulting 6285in an AE_NO_RETURN_VALUE exception. 6286 6287Fixed a problem with constructs of the form Store(Index(...),...). The 6288reference object returned from Index was inadvertently resolved to an actual 6289value. This problem was introduced in version 20050114 when the behavior of 6290Store() was modified to restrict the object types that can be used as the 6291source operand (to match the ACPI specification.) 6292 6293Reduced excessive stack use within the AcpiGetObjectInfo procedure. 6294 6295Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 6296 6297Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 6298 6299Code and Data Size: Current and previous core subsystem library sizes are 6300shown below. These are the code and data sizes for the acpica.lib produced 6301by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6302any ACPI driver or OSPM code. The debug version of the code includes the 6303debug output trace mechanism and has a much larger code and data size. Note 6304that these values will vary depending on the efficiency of the compiler and 6305the compiler options used during generation. 6306 6307 Previous Release: 6308 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 6309 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 6310 Current Release: 6311 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 6312 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 6313 6314 63152) iASL Compiler/Disassembler: 6316 6317Fixed a code generation problem in the constant folding optimization code 6318where incorrect code was generated if a constant was reduced to a buffer 6319object (i.e., a reduced type 5 opcode.) 6320 6321Fixed a typechecking problem for the ToBuffer operator. Caused by an 6322incorrect return type in the internal opcode information table. 6323 6324---------------------------------------- 632525 January 2005. Summary of changes for version 20050125: 6326 63271) ACPI CA Core Subsystem: 6328 6329Fixed a recently introduced problem with the Global Lock where the 6330underlying semaphore was not created. This problem was introduced in 6331version 20050114, and caused an AE_AML_NO_OPERAND exception during an 6332Acquire() operation on _GL. 6333 6334The local object cache is now optional, and is disabled by default. Both 6335AcpiExec and the iASL compiler enable the cache because they run in user 6336mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 6337to enable the local cache. 6338 6339Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 6340optional "implicit return" support where an error was returned if no return 6341object was expected, but one was implicitly returned. AE_OK is now returned 6342in this case and the implicitly returned object is deleted. 6343AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 6344methods such as _STA and _INI where the return type is known up front. 6345 6346Fixed a few issues with the internal convert-to-integer code. It now returns 6347an error if an attempt is made to convert a null string, a string of only 6348blanks/tabs, or a zero-length buffer. This affects both implicit conversion 6349and explicit conversion via the ToInteger() operator. 6350 6351The internal debug code in AcpiUtAcquireMutex has been commented out. It is 6352not needed for normal operation and should increase the performance of the 6353entire subsystem. The code remains in case it is needed for debug purposes 6354again. 6355 6356The AcpiExec source and makefile are included in the Unix/Linux package for 6357the first time. 6358 6359Code and Data Size: Current and previous core subsystem library sizes are 6360shown below. These are the code and data sizes for the acpica.lib produced 6361by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6362any ACPI driver or OSPM code. The debug version of the code includes the 6363debug output trace mechanism and has a much larger code and data size. Note 6364that these values will vary depending on the efficiency of the compiler and 6365the compiler options used during generation. 6366 6367 Previous Release: 6368 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 6369 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 6370 Current Release: 6371 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 6372 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 6373 63742) iASL Compiler/Disassembler: 6375 6376Switch/Case support: A warning is now issued if the type of the Switch value 6377cannot be determined at compile time. For example, Switch(Arg0) will 6378generate the warning, and the type is assumed to be an integer. As per the 6379ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 6380warning. 6381 6382Switch/Case support: Implemented support for buffer and string objects as 6383the switch value. This is an ACPI 3.0 feature, now that LEqual supports 6384buffers and strings. 6385 6386Switch/Case support: The emitted code for the LEqual() comparisons now uses 6387the switch value as the first operand, not the second. The case value is now 6388the second operand, and this allows the case value to be implicitly 6389converted to the type of the switch value, not the other way around. 6390 6391Switch/Case support: Temporary variables are now emitted immediately within 6392the control method, not at the global level. This means that there are now 639336 temps available per-method, not 36 temps per-module as was the case with 6394the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 6395 6396---------------------------------------- 639714 January 2005. Summary of changes for version 20050114: 6398 6399Added 2005 copyright to all module headers. This affects every module in 6400the core subsystem, iASL compiler, and the utilities. 6401 64021) ACPI CA Core Subsystem: 6403 6404Fixed an issue with the String-to-Buffer conversion code where the string 6405null terminator was not included in the buffer after conversion, but there 6406is existing ASL that assumes the string null terminator is included. This is 6407the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 6408introduced in the previous version when the code was updated to correctly 6409set the converted buffer size as per the ACPI specification. The ACPI spec 6410is ambiguous and will be updated to specify that the null terminator must be 6411included in the converted buffer. This also affects the ToBuffer() ASL 6412operator. 6413 6414Fixed a problem with the Mid() ASL/AML operator where it did not work 6415correctly on Buffer objects. Newly created sub-buffers were not being marked 6416as initialized. 6417 6418 6419Fixed a problem in AcpiTbFindTable where incorrect string compares were 6420performed on the OemId and OemTableId table header fields. These fields are 6421not null terminated, so strncmp is now used instead of strcmp. 6422 6423Implemented a restriction on the Store() ASL/AML operator to align the 6424behavior with the ACPI specification. Previously, any object could be used 6425as the source operand. Now, the only objects that may be used are Integers, 6426Buffers, Strings, Packages, Object References, and DDB Handles. If 6427necessary, the original behavior can be restored by enabling the 6428EnableInterpreterSlack flag. 6429 6430Enhanced the optional "implicit return" support to allow an implicit return 6431value from methods that are invoked externally via the AcpiEvaluateObject 6432interface. This enables implicit returns from the _STA and _INI methods, 6433for example. 6434 6435Changed the Revision() ASL/AML operator to return the current version of the 6436AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 6437the supported ACPI version (This is the function of the _REV method). 6438 6439Updated the _REV predefined method to return the currently supported version 6440of ACPI, now 3. 6441 6442Implemented batch mode option for the AcpiExec utility (-b). 6443 6444Code and Data Size: Current and previous core subsystem library sizes are 6445shown below. These are the code and data sizes for the acpica.lib produced 6446by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6447any ACPI driver or OSPM code. The debug version of the code includes the 6448debug output trace mechanism and has a much larger code and data size. Note 6449that these values will vary depending on the efficiency of the compiler and 6450the compiler options used during generation. 6451 6452 Previous Release: 6453 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6454 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 6455 Current Release: 6456 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 6457 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 6458 6459---------------------------------------- 646010 December 2004. Summary of changes for version 20041210: 6461 6462ACPI 3.0 support is nearing completion in both the iASL compiler and the 6463ACPI CA core subsystem. 6464 64651) ACPI CA Core Subsystem: 6466 6467Fixed a problem in the ToDecimalString operator where the resulting string 6468length was incorrectly calculated. The length is now calculated exactly, 6469eliminating incorrect AE_STRING_LIMIT exceptions. 6470 6471Fixed a problem in the ToHexString operator to allow a maximum 200 character 6472string to be produced. 6473 6474Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 6475routine where the length of the resulting buffer was not truncated to the 6476new size (if the target buffer already existed). 6477 6478Code and Data Size: Current and previous core subsystem library sizes are 6479shown below. These are the code and data sizes for the acpica.lib produced 6480by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6481any ACPI driver or OSPM code. The debug version of the code includes the 6482debug output trace mechanism and has a much larger code and data size. Note 6483that these values will vary depending on the efficiency of the compiler and 6484the compiler options used during generation. 6485 6486 Previous Release: 6487 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6488 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6489 Current Release: 6490 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6491 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 6492 6493 64942) iASL Compiler/Disassembler: 6495 6496Implemented the new ACPI 3.0 resource template macros - DWordSpace, 6497ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 6498Includes support in the disassembler. 6499 6500Implemented support for the new (ACPI 3.0) parameter to the Register macro, 6501AccessSize. 6502 6503Fixed a problem where the _HE resource name for the Interrupt macro was 6504referencing bit 0 instead of bit 1. 6505 6506Implemented check for maximum 255 interrupts in the Interrupt macro. 6507 6508Fixed a problem with the predefined resource descriptor names where 6509incorrect AML code was generated if the offset within the resource buffer 6510was 0 or 1. The optimizer shortened the AML code to a single byte opcode 6511but did not update the surrounding package lengths. 6512 6513Changes to the Dma macro: All channels within the channel list must be in 6514the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 6515optional (default is BusMaster). 6516 6517Implemented check for maximum 7 data bytes for the VendorShort macro. 6518 6519The ReadWrite parameter is now optional for the Memory32 and similar macros. 6520 6521---------------------------------------- 652203 December 2004. Summary of changes for version 20041203: 6523 65241) ACPI CA Core Subsystem: 6525 6526The low-level field insertion/extraction code (exfldio) has been completely 6527rewritten to eliminate unnecessary complexity, bugs, and boundary 6528conditions. 6529 6530Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 6531operators where the input operand could be inadvertently deleted if no 6532conversion was necessary (e.g., if the input to ToInteger was an Integer 6533object.) 6534 6535Fixed a problem with the ToDecimalString and ToHexString where an incorrect 6536exception code was returned if the resulting string would be > 200 chars. 6537AE_STRING_LIMIT is now returned. 6538 6539Fixed a problem with the Concatenate operator where AE_OK was always 6540returned, even if the operation failed. 6541 6542Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 6543semaphores to be allocated. 6544 6545Code and Data Size: Current and previous core subsystem library sizes are 6546shown below. These are the code and data sizes for the acpica.lib produced 6547by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6548any ACPI driver or OSPM code. The debug version of the code includes the 6549debug output trace mechanism and has a much larger code and data size. Note 6550that these values will vary depending on the efficiency of the compiler and 6551the compiler options used during generation. 6552 6553 Previous Release: 6554 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6555 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6556 Current Release: 6557 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 6558 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 6559 6560 65612) iASL Compiler/Disassembler: 6562 6563Fixed typechecking for the ObjectType and SizeOf operators. Problem was 6564recently introduced in 20041119. 6565 6566Fixed a problem with the ToUUID macro where the upper nybble of each buffer 6567byte was inadvertently set to zero. 6568 6569---------------------------------------- 657019 November 2004. Summary of changes for version 20041119: 6571 65721) ACPI CA Core Subsystem: 6573 6574Fixed a problem in the internal ConvertToInteger routine where new integers 6575were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 6576buffers and strings to integers. 6577 6578Implemented support to store a value to an Index() on a String object. This 6579is an ACPI 2.0 feature that had not yet been implemented. 6580 6581Implemented new behavior for storing objects to individual package elements 6582(via the Index() operator). The previous behavior was to invoke the implicit 6583conversion rules if an object was already present at the index. The new 6584behavior is to simply delete any existing object and directly store the new 6585object. Although the ACPI specification seems unclear on this subject, other 6586ACPI implementations behave in this manner. (This is the root of the 6587AE_BAD_HEX_CONSTANT issue.) 6588 6589Modified the RSDP memory scan mechanism to support the extended checksum for 6590ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 6591RSDP signature is found with a valid checksum. 6592 6593Code and Data Size: Current and previous core subsystem library sizes are 6594shown below. These are the code and data sizes for the acpica.lib produced 6595by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6596any ACPI driver or OSPM code. The debug version of the code includes the 6597debug output trace mechanism and has a much larger code and data size. Note 6598that these values will vary depending on the efficiency of the compiler and 6599the compiler options used during generation. 6600 6601 Previous Release: 6602 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6603 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6604 Current Release: 6605 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6606 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6607 6608 66092) iASL Compiler/Disassembler: 6610 6611Fixed a missing semicolon in the aslcompiler.y file. 6612 6613---------------------------------------- 661405 November 2004. Summary of changes for version 20041105: 6615 66161) ACPI CA Core Subsystem: 6617 6618Implemented support for FADT revision 2. This was an interim table (between 6619ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 6620 6621Implemented optional support to allow uninitialized LocalX and ArgX 6622variables in a control method. The variables are initialized to an Integer 6623object with a value of zero. This support is enabled by setting the 6624AcpiGbl_EnableInterpreterSlack flag to TRUE. 6625 6626Implemented support for Integer objects for the SizeOf operator. Either 4 6627or 8 is returned, depending on the current integer size (32-bit or 64-bit, 6628depending on the parent table revision). 6629 6630Fixed a problem in the implementation of the SizeOf and ObjectType operators 6631where the operand was resolved to a value too early, causing incorrect 6632return values for some objects. 6633 6634Fixed some possible memory leaks during exceptional conditions. 6635 6636Code and Data Size: Current and previous core subsystem library sizes are 6637shown below. These are the code and data sizes for the acpica.lib produced 6638by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6639any ACPI driver or OSPM code. The debug version of the code includes the 6640debug output trace mechanism and has a much larger code and data size. Note 6641that these values will vary depending on the efficiency of the compiler and 6642the compiler options used during generation. 6643 6644 Previous Release: 6645 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6646 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6647 Current Release: 6648 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 6649 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 6650 6651 66522) iASL Compiler/Disassembler: 6653 6654Implemented support for all ACPI 3.0 reserved names and methods. 6655 6656Implemented all ACPI 3.0 grammar elements in the front-end, including 6657support for semicolons. 6658 6659Implemented the ACPI 3.0 Function() and ToUUID() macros 6660 6661Fixed a problem in the disassembler where a Scope() operator would not be 6662emitted properly if the target of the scope was in another table. 6663 6664---------------------------------------- 666515 October 2004. Summary of changes for version 20041015: 6666 6667Note: ACPI CA is currently undergoing an in-depth and complete formal 6668evaluation to test/verify the following areas. Other suggestions are 6669welcome. This will result in an increase in the frequency of releases and 6670the number of bug fixes in the next few months. 6671 - Functional tests for all ASL/AML operators 6672 - All implicit/explicit type conversions 6673 - Bit fields and operation regions 6674 - 64-bit math support and 32-bit-only "truncated" math support 6675 - Exceptional conditions, both compiler and interpreter 6676 - Dynamic object deletion and memory leaks 6677 - ACPI 3.0 support when implemented 6678 - External interfaces to the ACPI subsystem 6679 6680 66811) ACPI CA Core Subsystem: 6682 6683Fixed two alignment issues on 64-bit platforms - within debug statements in 6684AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 6685field within the non-aligned ACPI generic address structure. 6686 6687Fixed a problem in the Increment and Decrement operators where incorrect 6688operand resolution could result in the inadvertent modification of the 6689original integer when the integer is passed into another method as an 6690argument and the arg is then incremented/decremented. 6691 6692Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 6693BCD number were truncated during conversion. 6694 6695Fixed a problem in the ToDecimal operator where the length of the resulting 6696string could be set incorrectly too long if the input operand was a Buffer 6697object. 6698 6699Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 6700within a buffer would prematurely terminate a compare between buffer 6701objects. 6702 6703Added a check for string overflow (>200 characters as per the ACPI 6704specification) during the Concatenate operator with two string operands. 6705 6706Code and Data Size: Current and previous core subsystem library sizes are 6707shown below. These are the code and data sizes for the acpica.lib produced 6708by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6709any ACPI driver or OSPM code. The debug version of the code includes the 6710debug output trace mechanism and has a much larger code and data size. Note 6711that these values will vary depending on the efficiency of the compiler and 6712the compiler options used during generation. 6713 6714 Previous Release: 6715 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6716 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6717 Current Release: 6718 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6719 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 6720 6721 6722 67232) iASL Compiler/Disassembler: 6724 6725Allow the use of the ObjectType operator on uninitialized Locals and Args 6726(returns 0 as per the ACPI specification). 6727 6728Fixed a problem where the compiler would fault if there was a syntax error 6729in the FieldName of all of the various CreateXXXField operators. 6730 6731Disallow the use of lower case letters within the EISAID macro, as per the 6732ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 6733U is an uppercase letter and N is a hex digit. 6734 6735 6736---------------------------------------- 673706 October 2004. Summary of changes for version 20041006: 6738 67391) ACPI CA Core Subsystem: 6740 6741Implemented support for the ACPI 3.0 Timer operator. This ASL function 6742implements a 64-bit timer with 100 nanosecond granularity. 6743 6744Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 6745implement the ACPI 3.0 Timer operator. This allows the host OS to implement 6746the timer with the best clock available. Also, it keeps the core subsystem 6747out of the clock handling business, since the host OS (usually) performs 6748this function. 6749 6750Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 6751functions use a 64-bit address which is part of the packed ACPI Generic 6752Address Structure. Since the structure is non-aligned, the alignment macros 6753are now used to extract the address to a local variable before use. 6754 6755Fixed a problem where the ToInteger operator assumed all input strings were 6756hexadecimal. The operator now handles both decimal strings and hex strings 6757(prefixed with "0x"). 6758 6759Fixed a problem where the string length in the string object created as a 6760result of the internal ConvertToString procedure could be incorrect. This 6761potentially affected all implicit conversions and also the ToDecimalString 6762and ToHexString operators. 6763 6764Fixed two problems in the ToString operator. If the length parameter was 6765zero, an incorrect string object was created and the value of the input 6766length parameter was inadvertently changed from zero to Ones. 6767 6768Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 6769resource macro was ignored. 6770 6771Simplified the interfaces to the internal division functions, reducing code 6772size and complexity. 6773 6774Code and Data Size: Current and previous core subsystem library sizes are 6775shown below. These are the code and data sizes for the acpica.lib produced 6776by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6777any ACPI driver or OSPM code. The debug version of the code includes the 6778debug output trace mechanism and has a much larger code and data size. Note 6779that these values will vary depending on the efficiency of the compiler and 6780the compiler options used during generation. 6781 6782 Previous Release: 6783 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6784 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6785 Current Release: 6786 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6787 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 6788 6789 67902) iASL Compiler/Disassembler: 6791 6792Implemented support for the ACPI 3.0 Timer operator. 6793 6794Fixed a problem where the Default() operator was inadvertently ignored in a 6795Switch/Case block. This was a problem in the translation of the Switch 6796statement to If...Else pairs. 6797 6798Added support to allow a standalone Return operator, with no parentheses (or 6799operands). 6800 6801Fixed a problem with code generation for the ElseIf operator where the 6802translated Else...If parse tree was improperly constructed leading to the 6803loss of some code. 6804 6805---------------------------------------- 680622 September 2004. Summary of changes for version 20040922: 6807 68081) ACPI CA Core Subsystem: 6809 6810Fixed a problem with the implementation of the LNot() operator where "Ones" 6811was not returned for the TRUE case. Changed the code to return Ones instead 6812of (!Arg) which was usually 1. This change affects iASL constant folding for 6813this operator also. 6814 6815Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 6816initialized properly -- Now zero the entire buffer in this case where the 6817buffer already exists. 6818 6819Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 6820Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 6821related code considerably. This will require changes/updates to all OS 6822interface layers (OSLs.) 6823 6824Implemented a new external interface, AcpiInstallExceptionHandler, to allow 6825a system exception handler to be installed. This handler is invoked upon any 6826run-time exception that occurs during control method execution. 6827 6828Added support for the DSDT in AcpiTbFindTable. This allows the 6829DataTableRegion() operator to access the local copy of the DSDT. 6830 6831Code and Data Size: Current and previous core subsystem library sizes are 6832shown below. These are the code and data sizes for the acpica.lib produced 6833by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6834any ACPI driver or OSPM code. The debug version of the code includes the 6835debug output trace mechanism and has a much larger code and data size. Note 6836that these values will vary depending on the efficiency of the compiler and 6837the compiler options used during generation. 6838 6839 Previous Release: 6840 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6841 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6842 Current Release: 6843 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 6844 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 6845 6846 68472) iASL Compiler/Disassembler: 6848 6849Fixed a problem with constant folding and the LNot operator. LNot was 6850returning 1 in the TRUE case, not Ones as per the ACPI specification. This 6851could result in the generation of an incorrect folded/reduced constant. 6852 6853End-Of-File is now allowed within a "//"-style comment. A parse error no 6854longer occurs if such a comment is at the very end of the input ASL source 6855file. 6856 6857Implemented the "-r" option to override the Revision in the table header. 6858The initial use of this option will be to simplify the evaluation of the AML 6859interpreter by allowing a single ASL source module to be compiled for either 686032-bit or 64-bit integers. 6861 6862 6863---------------------------------------- 686427 August 2004. Summary of changes for version 20040827: 6865 68661) ACPI CA Core Subsystem: 6867 6868- Implemented support for implicit object conversion in the non-numeric 6869logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 6870LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 6871the second operand is implicitly converted on the fly to match the type of 6872the first operand. For example: 6873 6874 LEqual (Source1, Source2) 6875 6876Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 6877The data type of Source1 dictates the required type of Source2. Source2 is 6878implicitly converted if necessary to match the type of Source1. 6879 6880- Updated and corrected the behavior of the string conversion support. The 6881rules concerning conversion of buffers to strings (according to the ACPI 6882specification) are as follows: 6883 6884ToDecimalString - explicit byte-wise conversion of buffer to string of 6885decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 6886conversion of buffer to string of hex values (0-FF) separated by commas. 6887ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 6888copy with no transform except NULL terminated. Any other implicit buffer-to- 6889string conversion - byte-wise conversion of buffer to string of hex values 6890(0-FF) separated by spaces. 6891 6892- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 6893 6894- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 6895one byte too short in the case of a node in the root scope. This could 6896cause a fault during debug output. 6897 6898- Code and Data Size: Current and previous core subsystem library sizes are 6899shown below. These are the code and data sizes for the acpica.lib produced 6900by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6901any ACPI driver or OSPM code. The debug version of the code includes the 6902debug output trace mechanism and has a much larger code and data size. Note 6903that these values will vary depending on the efficiency of the compiler and 6904the compiler options used during generation. 6905 6906 Previous Release: 6907 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6908 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6909 Current Release: 6910 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 6911 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 6912 6913 69142) iASL Compiler/Disassembler: 6915 6916- Fixed a Linux generation error. 6917 6918 6919---------------------------------------- 692016 August 2004. Summary of changes for version 20040816: 6921 69221) ACPI CA Core Subsystem: 6923 6924Designed and implemented support within the AML interpreter for the so- 6925called "implicit return". This support returns the result of the last ASL 6926operation within a control method, in the absence of an explicit Return() 6927operator. A few machines depend on this behavior, even though it is not 6928explicitly supported by the ASL language. It is optional support that can 6929be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6930 6931Removed support for the PCI_Config address space from the internal low level 6932hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6933support was not used internally, and would not work correctly anyway because 6934the PCI bus number and segment number were not supported. There are 6935separate interfaces for PCI configuration space access because of the unique 6936interface. 6937 6938Code and Data Size: Current and previous core subsystem library sizes are 6939shown below. These are the code and data sizes for the acpica.lib produced 6940by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6941any ACPI driver or OSPM code. The debug version of the code includes the 6942debug output trace mechanism and has a much larger code and data size. Note 6943that these values will vary depending on the efficiency of the compiler and 6944the compiler options used during generation. 6945 6946 Previous Release: 6947 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6948 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6949 Current Release: 6950 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6951 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6952 6953 69542) iASL Compiler/Disassembler: 6955 6956Fixed a problem where constants in ASL expressions at the root level (not 6957within a control method) could be inadvertently truncated during code 6958generation. This problem was introduced in the 20040715 release. 6959 6960 6961---------------------------------------- 696215 July 2004. Summary of changes for version 20040715: 6963 69641) ACPI CA Core Subsystem: 6965 6966Restructured the internal HW GPE interfaces to pass/track the current state 6967of interrupts (enabled/disabled) in order to avoid possible deadlock and 6968increase flexibility of the interfaces. 6969 6970Implemented a "lexicographical compare" for String and Buffer objects within 6971the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6972as per further clarification to the ACPI specification. Behavior is similar 6973to C library "strcmp". 6974 6975Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6976external function. In the 32-bit non-debug case, the stack use has been 6977reduced from 168 bytes to 32 bytes. 6978 6979Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6980whose purpose is to allow the AML interpreter to forgive certain bad AML 6981constructs. Default setting is FALSE. 6982 6983Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6984support code. If enabled, it allows field access to go beyond the end of a 6985region definition if the field is within the region length rounded up to the 6986next access width boundary (a common coding error.) 6987 6988Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6989ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6990symbols are lowercased by the latest version of the AcpiSrc tool. 6991 6992The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6993rename "Register" to simply "Reg" to prevent certain compilers from 6994complaining. 6995 6996Code and Data Size: Current and previous core subsystem library sizes are 6997shown below. These are the code and data sizes for the acpica.lib produced 6998by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6999any ACPI driver or OSPM code. The debug version of the code includes the 7000debug output trace mechanism and has a much larger code and data size. Note 7001that these values will vary depending on the efficiency of the compiler and 7002the compiler options used during generation. 7003 7004 Previous Release: 7005 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 7006 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 7007 Current Release: 7008 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 7009 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 7010 7011 70122) iASL Compiler/Disassembler: 7013 7014Implemented full support for Package objects within the Case() operator. 7015Note: The Break() operator is currently not supported within Case blocks 7016(TermLists) as there is some question about backward compatibility with ACPI 70171.0 interpreters. 7018 7019 7020Fixed a problem where complex terms were not supported properly within the 7021Switch() operator. 7022 7023Eliminated extraneous warning for compiler-emitted reserved names of the 7024form "_T_x". (Used in Switch/Case operators.) 7025 7026Eliminated optimization messages for "_T_x" objects and small constants 7027within the DefinitionBlock operator. 7028 7029 7030---------------------------------------- 703115 June 2004. Summary of changes for version 20040615: 7032 70331) ACPI CA Core Subsystem: 7034 7035Implemented support for Buffer and String objects (as per ACPI 2.0) for the 7036following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 7037LLessEqual. 7038 7039All directory names in the entire source package are lower case, as they 7040were in earlier releases. 7041 7042Implemented "Disassemble" command in the AML debugger that will disassemble 7043a single control method. 7044 7045Code and Data Size: Current and previous core subsystem library sizes are 7046shown below. These are the code and data sizes for the acpica.lib produced 7047by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7048any ACPI driver or OSPM code. The debug version of the code includes the 7049debug output trace mechanism and has a much larger code and data size. Note 7050that these values will vary depending on the efficiency of the compiler and 7051the compiler options used during generation. 7052 7053 Previous Release: 7054 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 7055 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 7056 7057 Current Release: 7058 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 7059 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 7060 7061 70622) iASL Compiler/Disassembler: 7063 7064Implemented support for Buffer and String objects (as per ACPI 2.0) for the 7065following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 7066LLessEqual. 7067 7068All directory names in the entire source package are lower case, as they 7069were in earlier releases. 7070 7071Fixed a fault when using the -g or -d<nofilename> options if the FADT was 7072not found. 7073 7074Fixed an issue with the Windows version of the compiler where later versions 7075of Windows place the FADT in the registry under the name "FADT" and not 7076"FACP" as earlier versions did. This applies when using the -g or - 7077d<nofilename> options. The compiler now looks for both strings as 7078necessary. 7079 7080Fixed a problem with compiler namepath optimization where a namepath within 7081the Scope() operator could not be optimized if the namepath was a subpath of 7082the current scope path. 7083 7084---------------------------------------- 708527 May 2004. Summary of changes for version 20040527: 7086 70871) ACPI CA Core Subsystem: 7088 7089Completed a new design and implementation for EBDA (Extended BIOS Data Area) 7090support in the RSDP scan code. The original code improperly scanned for the 7091EBDA by simply scanning from memory location 0 to 0x400. The correct method 7092is to first obtain the EBDA pointer from within the BIOS data area, then 7093scan 1K of memory starting at the EBDA pointer. There appear to be few if 7094any machines that place the RSDP in the EBDA, however. 7095 7096Integrated a fix for a possible fault during evaluation of BufferField 7097arguments. Obsolete code that was causing the problem was removed. 7098 7099Found and fixed a problem in the Field Support Code where data could be 7100corrupted on a bit field read that starts on an aligned boundary but does 7101not end on an aligned boundary. Merged the read/write "datum length" 7102calculation code into a common procedure. 7103 7104Rolled in a couple of changes to the FreeBSD-specific header. 7105 7106 7107Code and Data Size: Current and previous core subsystem library sizes are 7108shown below. These are the code and data sizes for the acpica.lib produced 7109by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7110any ACPI driver or OSPM code. The debug version of the code includes the 7111debug output trace mechanism and has a much larger code and data size. Note 7112that these values will vary depending on the efficiency of the compiler and 7113the compiler options used during generation. 7114 7115 Previous Release: 7116 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 7117 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 7118 Current Release: 7119 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 7120 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 7121 7122 71232) iASL Compiler/Disassembler: 7124 7125Fixed a generation warning produced by some overly-verbose compilers for a 712664-bit constant. 7127 7128---------------------------------------- 712914 May 2004. Summary of changes for version 20040514: 7130 71311) ACPI CA Core Subsystem: 7132 7133Fixed a problem where hardware GPE enable bits sometimes not set properly 7134during and after GPE method execution. Result of 04/27 changes. 7135 7136Removed extra "clear all GPEs" when sleeping/waking. 7137 7138Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 7139AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 7140the new AcpiEv* calls as appropriate. 7141 7142ACPI_OS_NAME was removed from the OS-specific headers. The default name is 7143now "Microsoft Windows NT" for maximum compatibility. However this can be 7144changed by modifying the acconfig.h file. 7145 7146Allow a single invocation of AcpiInstallNotifyHandler for a handler that 7147traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 7148 7149Run _INI methods on ThermalZone objects. This is against the ACPI 7150specification, but there is apparently ASL code in the field that has these 7151_INI methods, and apparently "other" AML interpreters execute them. 7152 7153Performed a full 16/32/64 bit lint that resulted in some small changes. 7154 7155Added a sleep simulation command to the AML debugger to test sleep code. 7156 7157Code and Data Size: Current and previous core subsystem library sizes are 7158shown below. These are the code and data sizes for the acpica.lib produced 7159by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7160any ACPI driver or OSPM code. The debug version of the code includes the 7161debug output trace mechanism and has a much larger code and data size. Note 7162that these values will vary depending on the efficiency of the compiler and 7163the compiler options used during generation. 7164 7165 Previous Release: 7166 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 7167 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 7168 Current Release: 7169 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 7170 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 7171 7172---------------------------------------- 717327 April 2004. Summary of changes for version 20040427: 7174 71751) ACPI CA Core Subsystem: 7176 7177Completed a major overhaul of the GPE handling within ACPI CA. There are 7178now three types of GPEs: wake-only, runtime-only, and combination wake/run. 7179The only GPEs allowed to be combination wake/run are for button-style 7180devices such as a control-method power button, control-method sleep button, 7181or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 7182referenced by any _PRW methods are marked for "runtime" and hardware 7183enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 7184(and disabled at runtime). However, at sleep time, only those GPEs that 7185have been specifically enabled for wake via the AcpiEnableGpe interface will 7186actually be hardware enabled. 7187 7188A new external interface has been added, AcpiSetGpeType(), that is meant to 7189be used by device drivers to force a GPE to a particular type. It will be 7190especially useful for the drivers for the button devices mentioned above. 7191 7192Completed restructuring of the ACPI CA initialization sequence so that 7193default operation region handlers are installed before GPEs are initialized 7194and the _PRW methods are executed. This will prevent errors when the _PRW 7195methods attempt to access system memory or I/O space. 7196 7197GPE enable/disable no longer reads the GPE enable register. We now keep the 7198enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 7199thus no longer depend on the hardware to maintain these bits. 7200 7201Always clear the wake status and fixed/GPE status bits before sleep, even 7202for state S5. 7203 7204Improved the AML debugger output for displaying the GPE blocks and their 7205current status. 7206 7207Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 7208x = 0,1,2,3,4. 7209 7210Fixed a problem where the physical address was incorrectly calculated when 7211the Load() operator was used to directly load from an Operation Region (vs. 7212loading from a Field object.) Also added check for minimum table length for 7213this case. 7214 7215Fix for multiple mutex acquisition. Restore original thread SyncLevel on 7216mutex release. 7217 7218Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 7219consistency with the other fields returned. 7220 7221Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 7222structure for each GPE in the system, so the size of this structure is 7223important. 7224 7225CPU stack requirement reduction: Cleaned up the method execution and object 7226evaluation paths so that now a parameter structure is passed, instead of 7227copying the various method parameters over and over again. 7228 7229In evregion.c: Correctly exit and reenter the interpreter region if and 7230only if dispatching an operation region request to a user-installed handler. 7231Do not exit/reenter when dispatching to a default handler (e.g., default 7232system memory or I/O handlers) 7233 7234 7235Notes for updating drivers for the new GPE support. The following changes 7236must be made to ACPI-related device drivers that are attached to one or more 7237GPEs: (This information will be added to the ACPI CA Programmer Reference.) 7238 72391) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 7240explicitly call AcpiEnableGpe. 72412) There is a new interface called AcpiSetGpeType. This should be called 7242before enabling the GPE. Also, this interface will automatically disable 7243the GPE if it is currently enabled. 72443) AcpiEnableGpe no longer supports a GPE type flag. 7245 7246Specific drivers that must be changed: 72471) EC driver: 7248 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 7249AeGpeHandler, NULL); 7250 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 7251 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 7252 72532) Button Drivers (Power, Lid, Sleep): 7254Run _PRW method under parent device 7255If _PRW exists: /* This is a control-method button */ 7256 Extract GPE number and possibly GpeDevice 7257 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 7258 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 7259 7260For all other devices that have _PRWs, we automatically set the GPE type to 7261ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 7262must be done on a selective basis, usually requiring some kind of user app 7263to allow the user to pick the wake devices. 7264 7265 7266Code and Data Size: Current and previous core subsystem library sizes are 7267shown below. These are the code and data sizes for the acpica.lib produced 7268by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7269any ACPI driver or OSPM code. The debug version of the code includes the 7270debug output trace mechanism and has a much larger code and data size. Note 7271that these values will vary depending on the efficiency of the compiler and 7272the compiler options used during generation. 7273 7274 Previous Release: 7275 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 7276 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 7277 Current Release: 7278 7279 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 7280 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 7281 7282 7283 7284---------------------------------------- 728502 April 2004. Summary of changes for version 20040402: 7286 72871) ACPI CA Core Subsystem: 7288 7289Fixed an interpreter problem where an indirect store through an ArgX 7290parameter was incorrectly applying the "implicit conversion rules" during 7291the store. From the ACPI specification: "If the target is a method local or 7292argument (LocalX or ArgX), no conversion is performed and the result is 7293stored directly to the target". The new behavior is to disable implicit 7294conversion during ALL stores to an ArgX. 7295 7296Changed the behavior of the _PRW method scan to ignore any and all errors 7297returned by a given _PRW. This prevents the scan from aborting from the 7298failure of any single _PRW. 7299 7300Moved the runtime configuration parameters from the global init procedure to 7301static variables in acglobal.h. This will allow the host to override the 7302default values easily. 7303 7304Code and Data Size: Current and previous core subsystem library sizes are 7305shown below. These are the code and data sizes for the acpica.lib produced 7306by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7307any ACPI driver or OSPM code. The debug version of the code includes the 7308debug output trace mechanism and has a much larger code and data size. Note 7309that these values will vary depending on the efficiency of the compiler and 7310the compiler options used during generation. 7311 7312 Previous Release: 7313 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 7314 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 7315 Current Release: 7316 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 7317 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 7318 7319 73202) iASL Compiler/Disassembler: 7321 7322iASL now fully disassembles SSDTs. However, External() statements are not 7323generated automatically for unresolved symbols at this time. This is a 7324planned feature for future implementation. 7325 7326Fixed a scoping problem in the disassembler that occurs when the type of the 7327target of a Scope() operator is overridden. This problem caused an 7328incorrectly nested internal namespace to be constructed. 7329 7330Any warnings or errors that are emitted during disassembly are now commented 7331out automatically so that the resulting file can be recompiled without any 7332hand editing. 7333 7334---------------------------------------- 733526 March 2004. Summary of changes for version 20040326: 7336 73371) ACPI CA Core Subsystem: 7338 7339Implemented support for "wake" GPEs via interaction between GPEs and the 7340_PRW methods. Every GPE that is pointed to by one or more _PRWs is 7341identified as a WAKE GPE and by default will no longer be enabled at 7342runtime. Previously, we were blindly enabling all GPEs with a corresponding 7343_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 7344believe this has been the cause of thousands of "spurious" GPEs on some 7345systems. 7346 7347This new GPE behavior is can be reverted to the original behavior (enable 7348ALL GPEs at runtime) via a runtime flag. 7349 7350Fixed a problem where aliased control methods could not access objects 7351properly. The proper scope within the namespace was not initialized 7352(transferred to the target of the aliased method) before executing the 7353target method. 7354 7355Fixed a potential race condition on internal object deletion on the return 7356object in AcpiEvaluateObject. 7357 7358Integrated a fix for resource descriptors where both _MEM and _MTP were 7359being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 7360wide, 0x0F instead of 0x03.) 7361 7362Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 7363fault in some cases. 7364 7365Updated Notify() values for debug statements in evmisc.c 7366 7367Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 7368 7369Code and Data Size: Current and previous core subsystem library sizes are 7370shown below. These are the code and data sizes for the acpica.lib produced 7371by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7372any ACPI driver or OSPM code. The debug version of the code includes the 7373debug output trace mechanism and has a much larger code and data size. Note 7374that these values will vary depending on the efficiency of the compiler and 7375the compiler options used during generation. 7376 7377 Previous Release: 7378 7379 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 7380 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 7381 Current Release: 7382 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 7383 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 7384 7385---------------------------------------- 738611 March 2004. Summary of changes for version 20040311: 7387 73881) ACPI CA Core Subsystem: 7389 7390Fixed a problem where errors occurring during the parse phase of control 7391method execution did not abort cleanly. For example, objects created and 7392installed in the namespace were not deleted. This caused all subsequent 7393invocations of the method to return the AE_ALREADY_EXISTS exception. 7394 7395Implemented a mechanism to force a control method to "Serialized" execution 7396if the method attempts to create namespace objects. (The root of the 7397AE_ALREADY_EXISTS problem.) 7398 7399Implemented support for the predefined _OSI "internal" control method. 7400Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 7401"Windows 2001.1", and can be easily upgraded for new strings as necessary. 7402This feature will allow "other" operating systems to execute the fully 7403tested, "Windows" code path through the ASL code 7404 7405Global Lock Support: Now allows multiple acquires and releases with any 7406internal thread. Removed concept of "owning thread" for this special mutex. 7407 7408Fixed two functions that were inappropriately declaring large objects on the 7409CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 7410method execution considerably. 7411 7412Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 7413S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 7414 7415Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 7416defined on the machine. 7417 7418Implemented two runtime options: One to force all control method execution 7419to "Serialized" to mimic Windows behavior, another to disable _OSI support 7420if it causes problems on a given machine. 7421 7422Code and Data Size: Current and previous core subsystem library sizes are 7423shown below. These are the code and data sizes for the acpica.lib produced 7424by the Microsoft Visual C++ 6.0 compiler, and these values do not include 7425any ACPI driver or OSPM code. The debug version of the code includes the 7426debug output trace mechanism and has a much larger code and data size. Note 7427that these values will vary depending on the efficiency of the compiler and 7428the compiler options used during generation. 7429 7430 Previous Release: 7431 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 7432 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 7433 Current Release: 7434 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 7435 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 7436 74372) iASL Compiler/Disassembler: 7438 7439Fixed an array size problem for FreeBSD that would cause the compiler to 7440fault. 7441 7442---------------------------------------- 744320 February 2004. Summary of changes for version 20040220: 7444 7445 74461) ACPI CA Core Subsystem: 7447 7448Implemented execution of _SxD methods for Device objects in the 7449GetObjectInfo interface. 7450 7451Fixed calls to _SST method to pass the correct arguments. 7452 7453Added a call to _SST on wake to restore to "working" state. 7454 7455Check for End-Of-Buffer failure case in the WalkResources interface. 7456 7457Integrated fix for 64-bit alignment issue in acglobal.h by moving two 7458structures to the beginning of the file. 7459 7460After wake, clear GPE status register(s) before enabling GPEs. 7461 7462After wake, clear/enable power button. (Perhaps we should clear/enable all 7463fixed events upon wake.) 7464 7465Fixed a couple of possible memory leaks in the Namespace manager. 7466 7467Integrated latest acnetbsd.h file. 7468 7469---------------------------------------- 747011 February 2004. Summary of changes for version 20040211: 7471 7472 74731) ACPI CA Core Subsystem: 7474 7475Completed investigation and implementation of the call-by-reference 7476mechanism for control method arguments. 7477 7478Fixed a problem where a store of an object into an indexed package could 7479fail if the store occurs within a different method than the method that 7480created the package. 7481 7482Fixed a problem where the ToDecimal operator could return incorrect results. 7483 7484Fixed a problem where the CopyObject operator could fail on some of the more 7485obscure objects (e.g., Reference objects.) 7486 7487Improved the output of the Debug object to display buffer, package, and 7488index objects. 7489 7490Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 7491the expected result. 7492 7493Added permanent ACPI_REPORT_ERROR macros for all instances of the 7494ACPI_AML_INTERNAL exception. 7495 7496Integrated latest version of acfreebsd.h 7497 7498---------------------------------------- 749916 January 2004. Summary of changes for version 20040116: 7500 7501The purpose of this release is primarily to update the copyright years in 7502each module, thus causing a huge number of diffs. There are a few small 7503functional changes, however. 7504 75051) ACPI CA Core Subsystem: 7506 7507Improved error messages when there is a problem finding one or more of the 7508required base ACPI tables 7509 7510Reintroduced the definition of APIC_HEADER in actbl.h 7511 7512Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 7513 7514Removed extraneous reference to NewObj in dsmthdat.c 7515 75162) iASL compiler 7517 7518Fixed a problem introduced in December that disabled the correct disassembly 7519of Resource Templates 7520 7521 7522---------------------------------------- 752303 December 2003. Summary of changes for version 20031203: 7524 75251) ACPI CA Core Subsystem: 7526 7527Changed the initialization of Operation Regions during subsystem 7528init to perform two entire walks of the ACPI namespace; The first 7529to initialize the regions themselves, the second to execute the 7530_REG methods. This fixed some interdependencies across _REG 7531methods found on some machines. 7532 7533Fixed a problem where a Store(Local0, Local1) could simply update 7534the object reference count, and not create a new copy of the 7535object if the Local1 is uninitialized. 7536 7537Implemented support for the _SST reserved method during sleep 7538transitions. 7539 7540Implemented support to clear the SLP_TYP and SLP_EN bits when 7541waking up, this is apparently required by some machines. 7542 7543When sleeping, clear the wake status only if SleepState is not S5. 7544 7545Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 7546pointer arithmetic advanced a string pointer too far. 7547 7548Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 7549could be returned if the requested table has not been loaded. 7550 7551Within the support for IRQ resources, restructured the handling of 7552the active and edge/level bits. 7553 7554Fixed a few problems in AcpiPsxExecute() where memory could be 7555leaked under certain error conditions. 7556 7557Improved error messages for the cases where the ACPI mode could 7558not be entered. 7559 7560Code and Data Size: Current and previous core subsystem library 7561sizes are shown below. These are the code and data sizes for the 7562acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7563these values do not include any ACPI driver or OSPM code. The 7564debug version of the code includes the debug output trace 7565mechanism and has a much larger code and data size. Note that 7566these values will vary depending on the efficiency of the compiler 7567and the compiler options used during generation. 7568 7569 Previous Release (20031029): 7570 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7571 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7572 Current Release: 7573 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 7574 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 7575 75762) iASL Compiler/Disassembler: 7577 7578Implemented a fix for the iASL disassembler where a bad index was 7579generated. This was most noticeable on 64-bit platforms 7580 7581 7582---------------------------------------- 758329 October 2003. Summary of changes for version 20031029: 7584 75851) ACPI CA Core Subsystem: 7586 7587 7588Fixed a problem where a level-triggered GPE with an associated 7589_Lxx control method was incorrectly cleared twice. 7590 7591Fixed a problem with the Field support code where an access can 7592occur beyond the end-of-region if the field is non-aligned but 7593extends to the very end of the parent region (resulted in an 7594AE_AML_REGION_LIMIT exception.) 7595 7596Fixed a problem with ACPI Fixed Events where an RT Clock handler 7597would not get invoked on an RTC event. The RTC event bitmasks for 7598the PM1 registers were not being initialized properly. 7599 7600Implemented support for executing _STA and _INI methods for 7601Processor objects. Although this is currently not part of the 7602ACPI specification, there is existing ASL code that depends on the 7603init-time execution of these methods. 7604 7605Implemented and deployed a GetDescriptorName function to decode 7606the various types of internal descriptors. Guards against null 7607descriptors during debug output also. 7608 7609Implemented and deployed a GetNodeName function to extract the 4- 7610character namespace node name. This function simplifies the debug 7611and error output, as well as guarding against null pointers during 7612output. 7613 7614Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 7615simplify the debug and error output of 64-bit integers. This 7616macro replaces the HIDWORD and LODWORD macros for dumping these 7617integers. 7618 7619Updated the implementation of the Stall() operator to only call 7620AcpiOsStall(), and also return an error if the operand is larger 7621than 255. This preserves the required behavior of not 7622relinquishing the processor, as would happen if AcpiOsSleep() was 7623called for "long stalls". 7624 7625Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 7626initialized are now treated as NOOPs. 7627 7628Cleaned up a handful of warnings during 64-bit generation. 7629 7630Fixed a reported error where and incorrect GPE number was passed 7631to the GPE dispatch handler. This value is only used for error 7632output, however. Used this opportunity to clean up and streamline 7633the GPE dispatch code. 7634 7635Code and Data Size: Current and previous core subsystem library 7636sizes are shown below. These are the code and data sizes for the 7637acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7638these values do not include any ACPI driver or OSPM code. The 7639 7640debug version of the code includes the debug output trace 7641mechanism and has a much larger code and data size. Note that 7642these values will vary depending on the efficiency of the compiler 7643and the compiler options used during generation. 7644 7645 Previous Release (20031002): 7646 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7647 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7648 Current Release: 7649 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 7650 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 7651 7652 76532) iASL Compiler/Disassembler: 7654 7655Updated the iASL compiler to return an error if the operand to the 7656Stall() operator is larger than 255. 7657 7658 7659---------------------------------------- 766002 October 2003. Summary of changes for version 20031002: 7661 7662 76631) ACPI CA Core Subsystem: 7664 7665Fixed a problem with Index Fields where the index was not 7666incremented for fields that require multiple writes to the 7667index/data registers (Fields that are wider than the data 7668register.) 7669 7670Fixed a problem with all Field objects where a write could go 7671beyond the end-of-field if the field was larger than the access 7672granularity and therefore required multiple writes to complete the 7673request. An extra write beyond the end of the field could happen 7674inadvertently. 7675 7676Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 7677would incorrectly be returned if the width of the Data Register 7678was larger than the specified field access width. 7679 7680Completed fixes for LoadTable() and Unload() and verified their 7681operation. Implemented full support for the "DdbHandle" object 7682throughout the ACPI CA subsystem. 7683 7684Implemented full support for the MADT and ECDT tables in the ACPI 7685CA header files. Even though these tables are not directly 7686consumed by ACPI CA, the header definitions are useful for ACPI 7687device drivers. 7688 7689Integrated resource descriptor fixes posted to the Linux ACPI 7690list. This included checks for minimum descriptor length, and 7691support for trailing NULL strings within descriptors that have 7692optional string elements. 7693 7694Code and Data Size: Current and previous core subsystem library 7695sizes are shown below. These are the code and data sizes for the 7696acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7697these values do not include any ACPI driver or OSPM code. The 7698debug version of the code includes the debug output trace 7699mechanism and has a much larger code and data size. Note that 7700these values will vary depending on the efficiency of the compiler 7701and the compiler options used during generation. 7702 7703 Previous Release (20030918): 7704 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7705 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7706 Current Release: 7707 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 7708 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 7709 7710 77112) iASL Compiler: 7712 7713Implemented detection of non-ASCII characters within the input 7714source ASL file. This catches attempts to compile binary (AML) 7715files early in the compile, with an informative error message. 7716 7717Fixed a problem where the disassembler would fault if the output 7718filename could not be generated or if the output file could not be 7719opened. 7720 7721---------------------------------------- 772218 September 2003. Summary of changes for version 20030918: 7723 7724 77251) ACPI CA Core Subsystem: 7726 7727Found and fixed a longstanding problem with the late execution of 7728the various deferred AML opcodes (such as Operation Regions, 7729Buffer Fields, Buffers, and Packages). If the name string 7730specified for the name of the new object placed the object in a 7731scope other than the current scope, the initialization/execution 7732of the opcode failed. The solution to this problem was to 7733implement a mechanism where the late execution of such opcodes 7734does not attempt to lookup/create the name a second time in an 7735incorrect scope. This fixes the "region size computed 7736incorrectly" problem. 7737 7738Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 7739Global Lock AE_BAD_PARAMETER error. 7740 7741Fixed several 64-bit issues with prototypes, casting and data 7742types. 7743 7744Removed duplicate prototype from acdisasm.h 7745 7746Fixed an issue involving EC Operation Region Detach (Shaohua Li) 7747 7748Code and Data Size: Current and previous core subsystem library 7749sizes are shown below. These are the code and data sizes for the 7750acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7751these values do not include any ACPI driver or OSPM code. The 7752debug version of the code includes the debug output trace 7753mechanism and has a much larger code and data size. Note that 7754these values will vary depending on the efficiency of the compiler 7755and the compiler options used during generation. 7756 7757 Previous Release: 7758 7759 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7760 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7761 Current Release: 7762 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 7763 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 7764 7765 77662) Linux: 7767 7768Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 7769correct sleep time in seconds. 7770 7771---------------------------------------- 777214 July 2003. Summary of changes for version 20030619: 7773 77741) ACPI CA Core Subsystem: 7775 7776Parse SSDTs in order discovered, as opposed to reverse order 7777(Hrvoje Habjanic) 7778 7779Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 7780Klausner, 7781 Nate Lawson) 7782 7783 77842) Linux: 7785 7786Dynamically allocate SDT list (suggested by Andi Kleen) 7787 7788proc function return value cleanups (Andi Kleen) 7789 7790Correctly handle NMI watchdog during long stalls (Andrew Morton) 7791 7792Make it so acpismp=force works (reported by Andrew Morton) 7793 7794 7795---------------------------------------- 779619 June 2003. Summary of changes for version 20030619: 7797 77981) ACPI CA Core Subsystem: 7799 7800Fix To/FromBCD, eliminating the need for an arch-specific #define. 7801 7802Do not acquire a semaphore in the S5 shutdown path. 7803 7804Fix ex_digits_needed for 0. (Takayoshi Kochi) 7805 7806Fix sleep/stall code reversal. (Andi Kleen) 7807 7808Revert a change having to do with control method calling 7809semantics. 7810 78112) Linux: 7812 7813acpiphp update (Takayoshi Kochi) 7814 7815Export acpi_disabled for sonypi (Stelian Pop) 7816 7817Mention acpismp=force in config help 7818 7819Re-add acpitable.c and acpismp=force. This improves backwards 7820 7821compatibility and also cleans up the code to a significant degree. 7822 7823Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 7824 7825---------------------------------------- 782622 May 2003. Summary of changes for version 20030522: 7827 78281) ACPI CA Core Subsystem: 7829 7830Found and fixed a reported problem where an AE_NOT_FOUND error 7831occurred occasionally during _BST evaluation. This turned out to 7832be an Owner ID allocation issue where a called method did not get 7833a new ID assigned to it. Eventually, (after 64k calls), the Owner 7834ID UINT16 would wraparound so that the ID would be the same as the 7835caller's and the called method would delete the caller's 7836namespace. 7837 7838Implemented extended error reporting for control methods that are 7839aborted due to a run-time exception. Output includes the exact 7840AML instruction that caused the method abort, a dump of the method 7841locals and arguments at the time of the abort, and a trace of all 7842nested control method calls. 7843 7844Modified the interpreter to allow the creation of buffers of zero 7845length from the AML code. Implemented new code to ensure that no 7846attempt is made to actually allocate a memory buffer (of length 7847zero) - instead, a simple buffer object with a NULL buffer pointer 7848and length zero is created. A warning is no longer issued when 7849the AML attempts to create a zero-length buffer. 7850 7851Implemented a workaround for the "leading asterisk issue" in 7852_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 7853asterisk is automatically removed if present in any HID, UID, or 7854CID strings. The iASL compiler will still flag this asterisk as 7855an error, however. 7856 7857Implemented full support for _CID methods that return a package of 7858multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 7859now additionally returns a device _CID list if present. This 7860required a change to the external interface in order to pass an 7861ACPI_BUFFER object as a parameter since the _CID list is of 7862variable length. 7863 7864Fixed a problem with the new AE_SAME_HANDLER exception where 7865handler initialization code did not know about this exception. 7866 7867Code and Data Size: Current and previous core subsystem library 7868sizes are shown below. These are the code and data sizes for the 7869acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 7870these values do not include any ACPI driver or OSPM code. The 7871debug version of the code includes the debug output trace 7872mechanism and has a much larger code and data size. Note that 7873these values will vary depending on the efficiency of the compiler 7874and the compiler options used during generation. 7875 7876 Previous Release (20030509): 7877 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7878 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7879 Current Release: 7880 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 7881 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 7882 7883 78842) Linux: 7885 7886Fixed a bug in which we would reinitialize the ACPI interrupt 7887after it was already working, thus disabling all ACPI and the IRQs 7888for any other device sharing the interrupt. (Thanks to Stian 7889Jordet) 7890 7891Toshiba driver update (John Belmonte) 7892 7893Return only 0 or 1 for our interrupt handler status (Andrew 7894Morton) 7895 7896 78973) iASL Compiler: 7898 7899Fixed a reported problem where multiple (nested) ElseIf() 7900statements were not handled correctly by the compiler, resulting 7901in incorrect warnings and incorrect AML code. This was a problem 7902in both the ASL parser and the code generator. 7903 7904 79054) Documentation: 7906 7907Added changes to existing interfaces, new exception codes, and new 7908text concerning reference count object management versus garbage 7909collection. 7910 7911---------------------------------------- 791209 May 2003. Summary of changes for version 20030509. 7913 7914 79151) ACPI CA Core Subsystem: 7916 7917Changed the subsystem initialization sequence to hold off 7918installation of address space handlers until the hardware has been 7919initialized and the system has entered ACPI mode. This is because 7920the installation of space handlers can cause _REG methods to be 7921run. Previously, the _REG methods could potentially be run before 7922ACPI mode was enabled. 7923 7924Fixed some memory leak issues related to address space handler and 7925notify handler installation. There were some problems with the 7926reference count mechanism caused by the fact that the handler 7927objects are shared across several namespace objects. 7928 7929Fixed a reported problem where reference counts within the 7930namespace were not properly updated when named objects created by 7931method execution were deleted. 7932 7933Fixed a reported problem where multiple SSDTs caused a deletion 7934issue during subsystem termination. Restructured the table data 7935structures to simplify the linked lists and the related code. 7936 7937Fixed a problem where the table ID associated with secondary 7938tables (SSDTs) was not being propagated into the namespace objects 7939created by those tables. This would only present a problem for 7940tables that are unloaded at run-time, however. 7941 7942Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7943type as the length parameter (instead of UINT32). 7944 7945Solved a long-standing problem where an ALREADY_EXISTS error 7946appears on various systems. This problem could happen when there 7947are multiple PCI_Config operation regions under a single PCI root 7948bus. This doesn't happen very frequently, but there are some 7949systems that do this in the ASL. 7950 7951Fixed a reported problem where the internal DeleteNode function 7952was incorrectly handling the case where a namespace node was the 7953first in the parent's child list, and had additional peers (not 7954the only child, but first in the list of children.) 7955 7956Code and Data Size: Current core subsystem library sizes are shown 7957below. These are the code and data sizes for the acpica.lib 7958produced by the Microsoft Visual C++ 6.0 compiler, and these 7959values do not include any ACPI driver or OSPM code. The debug 7960version of the code includes the debug output trace mechanism and 7961has a much larger code and data size. Note that these values will 7962vary depending on the efficiency of the compiler and the compiler 7963options used during generation. 7964 7965 Previous Release 7966 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7967 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7968 Current Release: 7969 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7970 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7971 7972 79732) Linux: 7974 7975Allow ":" in OS override string (Ducrot Bruno) 7976 7977Kobject fix (Greg KH) 7978 7979 79803 iASL Compiler/Disassembler: 7981 7982Fixed a problem in the generation of the C source code files (AML 7983is emitted in C source statements for BIOS inclusion) where the 7984Ascii dump that appears within a C comment at the end of each line 7985could cause a compile time error if the AML sequence happens to 7986have an open comment or close comment sequence embedded. 7987 7988 7989---------------------------------------- 799024 April 2003. Summary of changes for version 20030424. 7991 7992 79931) ACPI CA Core Subsystem: 7994 7995Support for big-endian systems has been implemented. Most of the 7996support has been invisibly added behind big-endian versions of the 7997ACPI_MOVE_* macros. 7998 7999Fixed a problem in AcpiHwDisableGpeBlock() and 8000AcpiHwClearGpeBlock() where an incorrect offset was passed to the 8001low level hardware write routine. The offset parameter was 8002actually eliminated from the low level read/write routines because 8003they had become obsolete. 8004 8005Fixed a problem where a handler object was deleted twice during 8006the removal of a fixed event handler. 8007 8008 80092) Linux: 8010 8011A fix for SMP systems with link devices was contributed by 8012 8013Compaq's Dan Zink. 8014 8015(2.5) Return whether we handled the interrupt in our IRQ handler. 8016(Linux ISRs no longer return void, so we can propagate the handler 8017return value from the ACPI CA core back to the OS.) 8018 8019 8020 80213) Documentation: 8022 8023The ACPI CA Programmer Reference has been updated to reflect new 8024interfaces and changes to existing interfaces. 8025 8026---------------------------------------- 802728 March 2003. Summary of changes for version 20030328. 8028 80291) ACPI CA Core Subsystem: 8030 8031The GPE Block Device support has been completed. New interfaces 8032are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 8033interfaces (enable, disable, clear, getstatus) have been split 8034into separate interfaces for Fixed Events and General Purpose 8035Events (GPEs) in order to support GPE Block Devices properly. 8036 8037Fixed a problem where the error message "Failed to acquire 8038semaphore" would appear during operations on the embedded 8039controller (EC). 8040 8041Code and Data Size: Current core subsystem library sizes are shown 8042below. These are the code and data sizes for the acpica.lib 8043produced by the Microsoft Visual C++ 6.0 compiler, and these 8044values do not include any ACPI driver or OSPM code. The debug 8045version of the code includes the debug output trace mechanism and 8046has a much larger code and data size. Note that these values will 8047vary depending on the efficiency of the compiler and the compiler 8048options used during generation. 8049 8050 Previous Release 8051 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 8052 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 8053 Current Release: 8054 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 8055 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 8056 8057 8058---------------------------------------- 805928 February 2003. Summary of changes for version 20030228. 8060 8061 80621) ACPI CA Core Subsystem: 8063 8064The GPE handling and dispatch code has been completely overhauled 8065in preparation for support of GPE Block Devices (ID ACPI0006). 8066This affects internal data structures and code only; there should 8067be no differences visible externally. One new file has been 8068added, evgpeblk.c 8069 8070The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 8071fields that are used to determine the GPE block lengths. The 8072REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 8073structures are ignored. This is per the ACPI specification but it 8074isn't very clear. The full 256 Block 0/1 GPEs are now supported 8075(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 8076 8077In the SCI interrupt handler, removed the read of the PM1_CONTROL 8078register to look at the SCI_EN bit. On some machines, this read 8079causes an SMI event and greatly slows down SCI events. (This may 8080in fact be the cause of slow battery status response on some 8081systems.) 8082 8083Fixed a problem where a store of a NULL string to a package object 8084could cause the premature deletion of the object. This was seen 8085during execution of the battery _BIF method on some systems, 8086resulting in no battery data being returned. 8087 8088Added AcpiWalkResources interface to simplify parsing of resource 8089lists. 8090 8091Code and Data Size: Current core subsystem library sizes are shown 8092below. These are the code and data sizes for the acpica.lib 8093produced by the Microsoft Visual C++ 6.0 compiler, and these 8094values do not include any ACPI driver or OSPM code. The debug 8095version of the code includes the debug output trace mechanism and 8096has a much larger code and data size. Note that these values will 8097vary depending on the efficiency of the compiler and the compiler 8098options used during generation. 8099 8100 Previous Release 8101 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8102 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8103 Current Release: 8104 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 8105 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 8106 8107 81082) Linux 8109 8110S3 fixes (Ole Rohne) 8111 8112Update ACPI PHP driver with to use new acpi_walk_resource API 8113(Bjorn Helgaas) 8114 8115Add S4BIOS support (Pavel Machek) 8116 8117Map in entire table before performing checksum (John Stultz) 8118 8119Expand the mem= cmdline to allow the specification of reserved and 8120ACPI DATA blocks (Pavel Machek) 8121 8122Never use ACPI on VISWS 8123 8124Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 8125 8126Revert a change that allowed P_BLK lengths to be 4 or 5. This is 8127causing us to think that some systems support C2 when they really 8128don't. 8129 8130Do not count processor objects for non-present CPUs (Thanks to 8131Dominik Brodowski) 8132 8133 81343) iASL Compiler: 8135 8136Fixed a problem where ASL include files could not be found and 8137opened. 8138 8139Added support for the _PDC reserved name. 8140 8141 8142---------------------------------------- 814322 January 2003. Summary of changes for version 20030122. 8144 8145 81461) ACPI CA Core Subsystem: 8147 8148Added a check for constructs of the form: Store (Local0, Local0) 8149where Local0 is not initialized. Apparently, some BIOS 8150programmers believe that this is a NOOP. Since this store doesn't 8151do anything anyway, the new prototype behavior will ignore this 8152error. This is a case where we can relax the strict checking in 8153the interpreter in the name of compatibility. 8154 8155 81562) Linux 8157 8158The AcpiSrc Source Conversion Utility has been released with the 8159Linux package for the first time. This is the utility that is 8160used to convert the ACPI CA base source code to the Linux version. 8161 8162(Both) Handle P_BLK lengths shorter than 6 more gracefully 8163 8164(Both) Move more headers to include/acpi, and delete an unused 8165header. 8166 8167(Both) Move drivers/acpi/include directory to include/acpi 8168 8169(Both) Boot functions don't use cmdline, so don't pass it around 8170 8171(Both) Remove include of unused header (Adrian Bunk) 8172 8173(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 8174the 8175former now also includes the latter, acpiphp.h only needs the one, 8176now. 8177 8178(2.5) Make it possible to select method of bios restoring after S3 8179resume. [=> no more ugly ifdefs] (Pavel Machek) 8180 8181(2.5) Make proc write interfaces work (Pavel Machek) 8182 8183(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 8184 8185(2.5) Break out ACPI Perf code into its own module, under cpufreq 8186(Dominik Brodowski) 8187 8188(2.4) S4BIOS support (Ducrot Bruno) 8189 8190(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 8191Visinoni) 8192 8193 81943) iASL Compiler: 8195 8196Added support to disassemble SSDT and PSDTs. 8197 8198Implemented support to obtain SSDTs from the Windows registry if 8199available. 8200 8201 8202---------------------------------------- 820309 January 2003. Summary of changes for version 20030109. 8204 82051) ACPI CA Core Subsystem: 8206 8207Changed the behavior of the internal Buffer-to-String conversion 8208function. The current ACPI specification states that the contents 8209of the buffer are "converted to a string of two-character 8210hexadecimal numbers, each separated by a space". Unfortunately, 8211this definition is not backwards compatible with existing ACPI 1.0 8212implementations (although the behavior was not defined in the ACPI 82131.0 specification). The new behavior simply copies data from the 8214buffer to the string until a null character is found or the end of 8215the buffer is reached. The new String object is always null 8216terminated. This problem was seen during the generation of _BIF 8217battery data where incorrect strings were returned for battery 8218type, etc. This will also require an errata to the ACPI 8219specification. 8220 8221Renamed all instances of NATIVE_UINT and NATIVE_INT to 8222ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 8223 8224Copyright in all module headers (both Linux and non-Linux) has be 8225updated to 2003. 8226 8227Code and Data Size: Current core subsystem library sizes are shown 8228below. These are the code and data sizes for the acpica.lib 8229produced by the Microsoft Visual C++ 6.0 compiler, and these 8230values do not include any ACPI driver or OSPM code. The debug 8231version of the code includes the debug output trace mechanism and 8232has a much larger code and data size. Note that these values will 8233vary depending on the efficiency of the compiler and the compiler 8234options used during generation. 8235 8236 Previous Release 8237 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8238 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8239 Current Release: 8240 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8241 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8242 8243 82442) Linux 8245 8246Fixed an oops on module insertion/removal (Matthew Tippett) 8247 8248(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 8249 8250(2.5) Replace pr_debug (Randy Dunlap) 8251 8252(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 8253 8254(Both) Eliminate spawning of thread from timer callback, in favor 8255of schedule_work() 8256 8257(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 8258 8259(Both) Added define for Fixed Function HW region (Matthew Wilcox) 8260 8261(Both) Add missing statics to button.c (Pavel Machek) 8262 8263Several changes have been made to the source code translation 8264utility that generates the Linux Code in order to make the code 8265more "Linux-like": 8266 8267All typedefs on structs and unions have been removed in keeping 8268with the Linux coding style. 8269 8270Removed the non-Linux SourceSafe module revision number from each 8271module header. 8272 8273Completed major overhaul of symbols to be lowercased for linux. 8274Doubled the number of symbols that are lowercased. 8275 8276Fixed a problem where identifiers within procedure headers and 8277within quotes were not fully lower cased (they were left with a 8278starting capital.) 8279 8280Some C macros whose only purpose is to allow the generation of 16- 8281bit code are now completely removed in the Linux code, increasing 8282readability and maintainability. 8283 8284---------------------------------------- 8285 828612 December 2002. Summary of changes for version 20021212. 8287 8288 82891) ACPI CA Core Subsystem: 8290 8291Fixed a problem where the creation of a zero-length AML Buffer 8292would cause a fault. 8293 8294Fixed a problem where a Buffer object that pointed to a static AML 8295buffer (in an ACPI table) could inadvertently be deleted, causing 8296memory corruption. 8297 8298Fixed a problem where a user buffer (passed in to the external 8299ACPI CA interfaces) could be overwritten if the buffer was too 8300small to complete the operation, causing memory corruption. 8301 8302Fixed a problem in the Buffer-to-String conversion code where a 8303string of length one was always returned, regardless of the size 8304of the input Buffer object. 8305 8306Removed the NATIVE_CHAR data type across the entire source due to 8307lack of need and lack of consistent use. 8308 8309Code and Data Size: Current core subsystem library sizes are shown 8310below. These are the code and data sizes for the acpica.lib 8311produced by the Microsoft Visual C++ 6.0 compiler, and these 8312values do not include any ACPI driver or OSPM code. The debug 8313version of the code includes the debug output trace mechanism and 8314has a much larger code and data size. Note that these values will 8315vary depending on the efficiency of the compiler and the compiler 8316options used during generation. 8317 8318 Previous Release 8319 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 8320 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 8321 Current Release: 8322 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 8323 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 8324 8325 8326---------------------------------------- 832705 December 2002. Summary of changes for version 20021205. 8328 83291) ACPI CA Core Subsystem: 8330 8331Fixed a problem where a store to a String or Buffer object could 8332cause corruption of the DSDT if the object type being stored was 8333the same as the target object type and the length of the object 8334being stored was equal to or smaller than the original (existing) 8335target object. This was seen to cause corruption of battery _BIF 8336buffers if the _BIF method modified the buffer on the fly. 8337 8338Fixed a problem where an internal error was generated if a control 8339method invocation was used in an OperationRegion, Buffer, or 8340Package declaration. This was caused by the deferred parsing of 8341the control method and thus the deferred creation of the internal 8342method object. The solution to this problem was to create the 8343internal method object at the moment the method is encountered in 8344the first pass - so that subsequent references to the method will 8345able to obtain the required parameter count and thus properly 8346parse the method invocation. This problem presented itself as an 8347AE_AML_INTERNAL during the pass 1 parse phase during table load. 8348 8349Fixed a problem where the internal String object copy routine did 8350not always allocate sufficient memory for the target String object 8351and caused memory corruption. This problem was seen to cause 8352"Allocation already present in list!" errors as memory allocation 8353became corrupted. 8354 8355Implemented a new function for the evaluation of namespace objects 8356that allows the specification of the allowable return object 8357types. This simplifies a lot of code that checks for a return 8358object of one or more specific objects returned from the 8359evaluation (such as _STA, etc.) This may become and external 8360function if it would be useful to ACPI-related drivers. 8361 8362Completed another round of prefixing #defines with "ACPI_" for 8363clarity. 8364 8365Completed additional code restructuring to allow more modular 8366linking for iASL compiler and AcpiExec. Several files were split 8367creating new files. New files: nsparse.c dsinit.c evgpe.c 8368 8369Implemented an abort mechanism to terminate an executing control 8370method via the AML debugger. This feature is useful for debugging 8371control methods that depend (wait) for specific hardware 8372responses. 8373 8374Code and Data Size: Current core subsystem library sizes are shown 8375below. These are the code and data sizes for the acpica.lib 8376produced by the Microsoft Visual C++ 6.0 compiler, and these 8377values do not include any ACPI driver or OSPM code. The debug 8378version of the code includes the debug output trace mechanism and 8379has a much larger code and data size. Note that these values will 8380vary depending on the efficiency of the compiler and the compiler 8381options used during generation. 8382 8383 Previous Release 8384 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8385 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 8386 Current Release: 8387 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 8388 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 8389 8390 83912) iASL Compiler/Disassembler 8392 8393Fixed a compiler code generation problem for "Interrupt" Resource 8394Descriptors. If specified in the ASL, the optional "Resource 8395Source Index" and "Resource Source" fields were not inserted into 8396the correct location within the AML resource descriptor, creating 8397an invalid descriptor. 8398 8399Fixed a disassembler problem for "Interrupt" resource descriptors. 8400The optional "Resource Source Index" and "Resource Source" fields 8401were ignored. 8402 8403 8404---------------------------------------- 840522 November 2002. Summary of changes for version 20021122. 8406 8407 84081) ACPI CA Core Subsystem: 8409 8410Fixed a reported problem where an object stored to a Method Local 8411or Arg was not copied to a new object during the store - the 8412object pointer was simply copied to the Local/Arg. This caused 8413all subsequent operations on the Local/Arg to also affect the 8414original source of the store operation. 8415 8416Fixed a problem where a store operation to a Method Local or Arg 8417was not completed properly if the Local/Arg contained a reference 8418(from RefOf) to a named field. The general-purpose store-to- 8419namespace-node code is now used so that this case is handled 8420automatically. 8421 8422Fixed a problem where the internal object copy routine would cause 8423a protection fault if the object being copied was a Package and 8424contained either 1) a NULL package element or 2) a nested sub- 8425package. 8426 8427Fixed a problem with the GPE initialization that resulted from an 8428ambiguity in the ACPI specification. One section of the 8429specification states that both the address and length of the GPE 8430block must be zero if the block is not supported. Another section 8431implies that only the address need be zero if the block is not 8432supported. The code has been changed so that both the address and 8433the length must be non-zero to indicate a valid GPE block (i.e., 8434if either the address or the length is zero, the GPE block is 8435invalid.) 8436 8437Code and Data Size: Current core subsystem library sizes are shown 8438below. These are the code and data sizes for the acpica.lib 8439produced by the Microsoft Visual C++ 6.0 compiler, and these 8440values do not include any ACPI driver or OSPM code. The debug 8441version of the code includes the debug output trace mechanism and 8442has a much larger code and data size. Note that these values will 8443vary depending on the efficiency of the compiler and the compiler 8444options used during generation. 8445 8446 Previous Release 8447 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 8448 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 8449 Current Release: 8450 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8451 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 8452 8453 84542) Linux 8455 8456Cleaned up EC driver. Exported an external EC read/write 8457interface. By going through this, other drivers (most notably 8458sonypi) will be able to serialize access to the EC. 8459 8460 84613) iASL Compiler/Disassembler 8462 8463Implemented support to optionally generate include files for both 8464ASM and C (the -i switch). This simplifies BIOS development by 8465automatically creating include files that contain external 8466declarations for the symbols that are created within the 8467 8468(optionally generated) ASM and C AML source files. 8469 8470 8471---------------------------------------- 847215 November 2002. Summary of changes for version 20021115. 8473 84741) ACPI CA Core Subsystem: 8475 8476Fixed a memory leak problem where an error during resolution of 8477 8478method arguments during a method invocation from another method 8479failed to cleanup properly by deleting all successfully resolved 8480argument objects. 8481 8482Fixed a problem where the target of the Index() operator was not 8483correctly constructed if the source object was a package. This 8484problem has not been detected because the use of a target operand 8485with Index() is very rare. 8486 8487Fixed a problem with the Index() operator where an attempt was 8488made to delete the operand objects twice. 8489 8490Fixed a problem where an attempt was made to delete an operand 8491twice during execution of the CondRefOf() operator if the target 8492did not exist. 8493 8494Implemented the first of perhaps several internal create object 8495functions that create and initialize a specific object type. This 8496consolidates duplicated code wherever the object is created, thus 8497shrinking the size of the subsystem. 8498 8499Implemented improved debug/error messages for errors that occur 8500during nested method invocations. All executing method pathnames 8501are displayed (with the error) as the call stack is unwound - thus 8502simplifying debug. 8503 8504Fixed a problem introduced in the 10/02 release that caused 8505premature deletion of a buffer object if a buffer was used as an 8506ASL operand where an integer operand is required (Thus causing an 8507implicit object conversion from Buffer to Integer.) The change in 8508the 10/02 release was attempting to fix a memory leak (albeit 8509incorrectly.) 8510 8511Code and Data Size: Current core subsystem library sizes are shown 8512below. These are the code and data sizes for the acpica.lib 8513produced by the Microsoft Visual C++ 6.0 compiler, and these 8514values do not include any ACPI driver or OSPM code. The debug 8515version of the code includes the debug output trace mechanism and 8516has a much larger code and data size. Note that these values will 8517vary depending on the efficiency of the compiler and the compiler 8518options used during generation. 8519 8520 Previous Release 8521 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8522 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8523 Current Release: 8524 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 8525 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 8526 8527 85282) Linux 8529 8530Changed the implementation of the ACPI semaphores to use down() 8531instead of down_interruptable(). It is important that the 8532execution of ACPI control methods not be interrupted by signals. 8533Methods must run to completion, or the system may be left in an 8534unknown/unstable state. 8535 8536Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 8537(Shawn Starr) 8538 8539 85403) iASL Compiler/Disassembler 8541 8542 8543Changed the default location of output files. All output files 8544are now placed in the current directory by default instead of in 8545the directory of the source file. This change may affect some 8546existing makefiles, but it brings the behavior of the compiler in 8547line with other similar tools. The location of the output files 8548can be overridden with the -p command line switch. 8549 8550 8551---------------------------------------- 855211 November 2002. Summary of changes for version 20021111. 8553 8554 85550) ACPI Specification 2.0B is released and is now available at: 8556http://www.acpi.info/index.html 8557 8558 85591) ACPI CA Core Subsystem: 8560 8561Implemented support for the ACPI 2.0 SMBus Operation Regions. 8562This includes the early detection and handoff of the request to 8563the SMBus region handler (avoiding all of the complex field 8564support code), and support for the bidirectional return packet 8565from an SMBus write operation. This paves the way for the 8566development of SMBus drivers in each host operating system. 8567 8568Fixed a problem where the semaphore WAIT_FOREVER constant was 8569defined as 32 bits, but must be 16 bits according to the ACPI 8570specification. This had the side effect of causing ASL 8571Mutex/Event timeouts even though the ASL code requested a wait 8572forever. Changed all internal references to the ACPI timeout 8573parameter to 16 bits to prevent future problems. Changed the name 8574of WAIT_FOREVER to ACPI_WAIT_FOREVER. 8575 8576Code and Data Size: Current core subsystem library sizes are shown 8577below. These are the code and data sizes for the acpica.lib 8578produced by the Microsoft Visual C++ 6.0 compiler, and these 8579values do not include any ACPI driver or OSPM code. The debug 8580version of the code includes the debug output trace mechanism and 8581has a much larger code and data size. Note that these values will 8582vary depending on the efficiency of the compiler and the compiler 8583options used during generation. 8584 8585 Previous Release 8586 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8587 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8588 Current Release: 8589 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 8590 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 8591 8592 85932) Linux 8594 8595Module loading/unloading fixes (John Cagle) 8596 8597 85983) iASL Compiler/Disassembler 8599 8600Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 8601 8602Implemented support for the disassembly of all SMBus protocol 8603keywords (SMBQuick, SMBWord, etc.) 8604 8605---------------------------------------- 860601 November 2002. Summary of changes for version 20021101. 8607 8608 86091) ACPI CA Core Subsystem: 8610 8611Fixed a problem where platforms that have a GPE1 block but no GPE0 8612block were not handled correctly. This resulted in a "GPE 8613overlap" error message. GPE0 is no longer required. 8614 8615Removed code added in the previous release that inserted nodes 8616into the namespace in alphabetical order. This caused some side- 8617effects on various machines. The root cause of the problem is 8618still under investigation since in theory, the internal ordering 8619of the namespace nodes should not matter. 8620 8621 8622Enhanced error reporting for the case where a named object is not 8623found during control method execution. The full ACPI namepath 8624(name reference) of the object that was not found is displayed in 8625this case. 8626 8627Note: as a result of the overhaul of the namespace object types in 8628the previous release, the namespace nodes for the predefined 8629scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 8630instead of ACPI_TYPE_ANY. This simplifies the namespace 8631management code but may affect code that walks the namespace tree 8632looking for specific object types. 8633 8634Code and Data Size: Current core subsystem library sizes are shown 8635below. These are the code and data sizes for the acpica.lib 8636produced by the Microsoft Visual C++ 6.0 compiler, and these 8637values do not include any ACPI driver or OSPM code. The debug 8638version of the code includes the debug output trace mechanism and 8639has a much larger code and data size. Note that these values will 8640vary depending on the efficiency of the compiler and the compiler 8641options used during generation. 8642 8643 Previous Release 8644 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8645 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8646 Current Release: 8647 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 8648 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 8649 8650 86512) Linux 8652 8653Fixed a problem introduced in the previous release where the 8654Processor and Thermal objects were not recognized and installed in 8655/proc. This was related to the scope type change described above. 8656 8657 86583) iASL Compiler/Disassembler 8659 8660Implemented the -g option to get all of the required ACPI tables 8661from the registry and save them to files (Windows version of the 8662compiler only.) The required tables are the FADT, FACS, and DSDT. 8663 8664Added ACPI table checksum validation during table disassembly in 8665order to catch corrupted tables. 8666 8667 8668---------------------------------------- 866922 October 2002. Summary of changes for version 20021022. 8670 86711) ACPI CA Core Subsystem: 8672 8673Implemented a restriction on the Scope operator that the target 8674must already exist in the namespace at the time the operator is 8675encountered (during table load or method execution). In other 8676words, forward references are not allowed and Scope() cannot 8677create a new object. This changes the previous behavior where the 8678interpreter would create the name if not found. This new behavior 8679correctly enables the search-to-root algorithm during namespace 8680lookup of the target name. Because of this upsearch, this fixes 8681the known Compaq _SB_.OKEC problem and makes both the AML 8682interpreter and iASL compiler compatible with other ACPI 8683implementations. 8684 8685Completed a major overhaul of the internal ACPI object types for 8686the ACPI Namespace and the associated operand objects. Many of 8687these types had become obsolete with the introduction of the two- 8688pass namespace load. This cleanup simplifies the code and makes 8689the entire namespace load mechanism much clearer and easier to 8690understand. 8691 8692Improved debug output for tracking scope opening/closing to help 8693diagnose scoping issues. The old scope name as well as the new 8694scope name are displayed. Also improved error messages for 8695problems with ASL Mutex objects and error messages for GPE 8696problems. 8697 8698Cleaned up the namespace dump code, removed obsolete code. 8699 8700All string output (for all namespace/object dumps) now uses the 8701common ACPI string output procedure which handles escapes properly 8702and does not emit non-printable characters. 8703 8704Fixed some issues with constants in the 64-bit version of the 8705local C library (utclib.c) 8706 8707 87082) Linux 8709 8710EC Driver: No longer attempts to acquire the Global Lock at 8711interrupt level. 8712 8713 87143) iASL Compiler/Disassembler 8715 8716Implemented ACPI 2.0B grammar change that disallows all Type 1 and 87172 opcodes outside of a control method. This means that the 8718"executable" operators (versus the "namespace" operators) cannot 8719be used at the table level; they can only be used within a control 8720method. 8721 8722Implemented the restriction on the Scope() operator where the 8723target must already exist in the namespace at the time the 8724operator is encountered (during ASL compilation). In other words, 8725forward references are not allowed and Scope() cannot create a new 8726object. This makes the iASL compiler compatible with other ACPI 8727implementations and makes the Scope() implementation adhere to the 8728ACPI specification. 8729 8730Fixed a problem where namepath optimization for the Alias operator 8731was optimizing the wrong path (of the two namepaths.) This caused 8732a "Missing alias link" error message. 8733 8734Fixed a problem where an "unknown reserved name" warning could be 8735incorrectly generated for names like "_SB" when the trailing 8736underscore is not used in the original ASL. 8737 8738Fixed a problem where the reserved name check did not handle 8739NamePaths with multiple NameSegs correctly. The first nameseg of 8740the NamePath was examined instead of the last NameSeg. 8741 8742 8743---------------------------------------- 8744 874502 October 2002. Summary of changes for this release. 8746 8747 87481) ACPI CA Core Subsystem version 20021002: 8749 8750Fixed a problem where a store/copy of a string to an existing 8751string did not always set the string length properly in the String 8752object. 8753 8754Fixed a reported problem with the ToString operator where the 8755behavior was identical to the ToHexString operator instead of just 8756simply converting a raw buffer to a string data type. 8757 8758Fixed a problem where CopyObject and the other "explicit" 8759conversion operators were not updating the internal namespace node 8760type as part of the store operation. 8761 8762Fixed a memory leak during implicit source operand conversion 8763where the original object was not deleted if it was converted to a 8764new object of a different type. 8765 8766Enhanced error messages for all problems associated with namespace 8767lookups. Common procedure generates and prints the lookup name as 8768well as the formatted status. 8769 8770Completed implementation of a new design for the Alias support 8771within the namespace. The existing design did not handle the case 8772where a new object was assigned to one of the two names due to the 8773use of an explicit conversion operator, resulting in the two names 8774pointing to two different objects. The new design simply points 8775the Alias name to the original name node - not to the object. 8776This results in a level of indirection that must be handled in the 8777name resolution mechanism. 8778 8779Code and Data Size: Current core subsystem library sizes are shown 8780below. These are the code and data sizes for the acpica.lib 8781produced by the Microsoft Visual C++ 6.0 compiler, and these 8782values do not include any ACPI driver or OSPM code. The debug 8783version of the code includes the debug output trace mechanism and 8784has a larger code and data size. Note that these values will vary 8785depending on the efficiency of the compiler and the compiler 8786options used during generation. 8787 8788 Previous Release 8789 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8790 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8791 Current Release: 8792 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 8793 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 8794 8795 87962) Linux 8797 8798Initialize thermal driver's timer before it is used. (Knut 8799Neumann) 8800 8801Allow handling negative celsius values. (Kochi Takayoshi) 8802 8803Fix thermal management and make trip points. R/W (Pavel Machek) 8804 8805Fix /proc/acpi/sleep. (P. Christeas) 8806 8807IA64 fixes. (David Mosberger) 8808 8809Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 8810 8811Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 8812Brodowski) 8813 8814 88153) iASL Compiler/Disassembler 8816 8817Clarified some warning/error messages. 8818 8819 8820---------------------------------------- 882118 September 2002. Summary of changes for this release. 8822 8823 88241) ACPI CA Core Subsystem version 20020918: 8825 8826Fixed a reported problem with reference chaining (via the Index() 8827and RefOf() operators) in the ObjectType() and SizeOf() operators. 8828The definition of these operators includes the dereferencing of 8829all chained references to return information on the base object. 8830 8831Fixed a problem with stores to indexed package elements - the 8832existing code would not complete the store if an "implicit 8833conversion" was not performed. In other words, if the existing 8834object (package element) was to be replaced completely, the code 8835didn't handle this case. 8836 8837Relaxed typechecking on the ASL "Scope" operator to allow the 8838target name to refer to an object of type Integer, String, or 8839Buffer, in addition to the scoping object types (Device, 8840predefined Scopes, Processor, PowerResource, and ThermalZone.) 8841This allows existing AML code that has workarounds for a bug in 8842Windows to function properly. A warning is issued, however. This 8843affects both the AML interpreter and the iASL compiler. Below is 8844an example of this type of ASL code: 8845 8846 Name(DEB,0x00) 8847 Scope(DEB) 8848 { 8849 8850Fixed some reported problems with 64-bit integer support in the 8851local implementation of C library functions (clib.c) 8852 8853 88542) Linux 8855 8856Use ACPI fix map region instead of IOAPIC region, since it is 8857undefined in non-SMP. 8858 8859Ensure that the SCI has the proper polarity and trigger, even on 8860systems that do not have an interrupt override entry in the MADT. 8861 88622.5 big driver reorganization (Pat Mochel) 8863 8864Use early table mapping code from acpitable.c (Andi Kleen) 8865 8866New blacklist entries (Andi Kleen) 8867 8868Blacklist improvements. Split blacklist code out into a separate 8869file. Move checking the blacklist to very early. Previously, we 8870would use ACPI tables, and then halfway through init, check the 8871blacklist -- too late. Now, it's early enough to completely fall- 8872back to non-ACPI. 8873 8874 88753) iASL Compiler/Disassembler version 20020918: 8876 8877Fixed a problem where the typechecking code didn't know that an 8878alias could point to a method. In other words, aliases were not 8879being dereferenced during typechecking. 8880 8881 8882---------------------------------------- 888329 August 2002. Summary of changes for this release. 8884 88851) ACPI CA Core Subsystem Version 20020829: 8886 8887If the target of a Scope() operator already exists, it must be an 8888object type that actually opens a scope -- such as a Device, 8889Method, Scope, etc. This is a fatal runtime error. Similar error 8890check has been added to the iASL compiler also. 8891 8892Tightened up the namespace load to disallow multiple names in the 8893same scope. This previously was allowed if both objects were of 8894the same type. (i.e., a lookup was the same as entering a new 8895name). 8896 8897 88982) Linux 8899 8900Ensure that the ACPI interrupt has the proper trigger and 8901polarity. 8902 8903local_irq_disable is extraneous. (Matthew Wilcox) 8904 8905Make "acpi=off" actually do what it says, and not use the ACPI 8906interpreter *or* the tables. 8907 8908Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 8909Takayoshi) 8910 8911 89123) iASL Compiler/Disassembler Version 20020829: 8913 8914Implemented namepath optimization for name declarations. For 8915example, a declaration like "Method (\_SB_.ABCD)" would get 8916optimized to "Method (ABCD)" if the declaration is within the 8917\_SB_ scope. This optimization is in addition to the named 8918reference path optimization first released in the previous 8919version. This would seem to complete all possible optimizations 8920for namepaths within the ASL/AML. 8921 8922If the target of a Scope() operator already exists, it must be an 8923object type that actually opens a scope -- such as a Device, 8924Method, Scope, etc. 8925 8926Implemented a check and warning for unreachable code in the same 8927block below a Return() statement. 8928 8929Fixed a problem where the listing file was not generated if the 8930compiler aborted if the maximum error count was exceeded (200). 8931 8932Fixed a problem where the typechecking of method return values was 8933broken. This includes the check for a return value when the 8934method is invoked as a TermArg (a return value is expected.) 8935 8936Fixed a reported problem where EOF conditions during a quoted 8937string or comment caused a fault. 8938 8939 8940---------------------------------------- 894115 August 2002. Summary of changes for this release. 8942 89431) ACPI CA Core Subsystem Version 20020815: 8944 8945Fixed a reported problem where a Store to a method argument that 8946contains a reference did not perform the indirect store correctly. 8947This problem was created during the conversion to the new 8948reference object model - the indirect store to a method argument 8949code was not updated to reflect the new model. 8950 8951Reworked the ACPI mode change code to better conform to ACPI 2.0, 8952handle corner cases, and improve code legibility (Kochi Takayoshi) 8953 8954Fixed a problem with the pathname parsing for the carat (^) 8955prefix. The heavy use of the carat operator by the new namepath 8956optimization in the iASL compiler uncovered a problem with the AML 8957interpreter handling of this prefix. In the case where one or 8958more carats precede a single nameseg, the nameseg was treated as 8959standalone and the search rule (to root) was inadvertently 8960applied. This could cause both the iASL compiler and the 8961interpreter to find the wrong object or to miss the error that 8962should occur if the object does not exist at that exact pathname. 8963 8964Found and fixed the problem where the HP Pavilion DSDT would not 8965load. This was a relatively minor tweak to the table loading code 8966(a problem caused by the unexpected encounter with a method 8967invocation not within a control method), but it does not solve the 8968overall issue of the execution of AML code at the table level. 8969This investigation is still ongoing. 8970 8971Code and Data Size: Current core subsystem library sizes are shown 8972below. These are the code and data sizes for the acpica.lib 8973produced by the Microsoft Visual C++ 6.0 compiler, and these 8974values do not include any ACPI driver or OSPM code. The debug 8975version of the code includes the debug output trace mechanism and 8976has a larger code and data size. Note that these values will vary 8977depending on the efficiency of the compiler and the compiler 8978options used during generation. 8979 8980 Previous Release 8981 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8982 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8983 Current Release: 8984 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8985 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8986 8987 89882) Linux 8989 8990Remove redundant slab.h include (Brad Hards) 8991 8992Fix several bugs in thermal.c (Herbert Nachtnebel) 8993 8994Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8995 8996Change acpi_system_suspend to use updated irq functions (Pavel 8997Machek) 8998 8999Export acpi_get_firmware_table (Matthew Wilcox) 9000 9001Use proper root proc entry for ACPI (Kochi Takayoshi) 9002 9003Fix early-boot table parsing (Bjorn Helgaas) 9004 9005 90063) iASL Compiler/Disassembler 9007 9008Reworked the compiler options to make them more consistent and to 9009use two-letter options where appropriate. We were running out of 9010sensible letters. This may break some makefiles, so check the 9011current options list by invoking the compiler with no parameters. 9012 9013Completed the design and implementation of the ASL namepath 9014optimization option for the compiler. This option optimizes all 9015references to named objects to the shortest possible path. The 9016first attempt tries to utilize a single nameseg (4 characters) and 9017the "search-to-root" algorithm used by the interpreter. If that 9018cannot be used (because either the name is not in the search path 9019or there is a conflict with another object with the same name), 9020the pathname is optimized using the carat prefix (usually a 9021shorter string than specifying the entire path from the root.) 9022 9023Implemented support to obtain the DSDT from the Windows registry 9024(when the disassembly option is specified with no input file). 9025Added this code as the implementation for AcpiOsTableOverride in 9026the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 9027utility) to scan memory for the DSDT to the AcpiOsTableOverride 9028function in the DOS OSL to make the disassembler truly OS 9029independent. 9030 9031Implemented a new option to disassemble and compile in one step. 9032When used without an input filename, this option will grab the 9033DSDT from the local machine, disassemble it, and compile it in one 9034step. 9035 9036Added a warning message for invalid escapes (a backslash followed 9037by any character other than the allowable escapes). This catches 9038the quoted string error "\_SB_" (which should be "\\_SB_" ). 9039 9040Also, there are numerous instances in the ACPI specification where 9041this error occurs. 9042 9043Added a compiler option to disable all optimizations. This is 9044basically the "compatibility mode" because by using this option, 9045the AML code will come out exactly the same as other ASL 9046compilers. 9047 9048Added error messages for incorrectly ordered dependent resource 9049functions. This includes: missing EndDependentFn macro at end of 9050dependent resource list, nested dependent function macros (both 9051start and end), and missing StartDependentFn macro. These are 9052common errors that should be caught at compile time. 9053 9054Implemented _OSI support for the disassembler and compiler. _OSI 9055must be included in the namespace for proper disassembly (because 9056the disassembler must know the number of arguments.) 9057 9058Added an "optimization" message type that is optional (off by 9059default). This message is used for all optimizations - including 9060constant folding, integer optimization, and namepath optimization. 9061 9062---------------------------------------- 906325 July 2002. Summary of changes for this release. 9064 9065 90661) ACPI CA Core Subsystem Version 20020725: 9067 9068The AML Disassembler has been enhanced to produce compilable ASL 9069code and has been integrated into the iASL compiler (see below) as 9070well as the single-step disassembly for the AML debugger and the 9071disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 9072resource templates and macros are fully supported. The 9073disassembler has been tested on over 30 different AML files, 9074producing identical AML when the resulting disassembled ASL file 9075is recompiled with the same ASL compiler. 9076 9077Modified the Resource Manager to allow zero interrupts and zero 9078dma channels during the GetCurrentResources call. This was 9079causing problems on some platforms. 9080 9081Added the AcpiOsRedirectOutput interface to the OSL to simplify 9082output redirection for the AcpiOsPrintf and AcpiOsVprintf 9083interfaces. 9084 9085Code and Data Size: Current core subsystem library sizes are shown 9086below. These are the code and data sizes for the acpica.lib 9087produced by the Microsoft Visual C++ 6.0 compiler, and these 9088values do not include any ACPI driver or OSPM code. The debug 9089version of the code includes the debug output trace mechanism and 9090has a larger code and data size. Note that these values will vary 9091depending on the efficiency of the compiler and the compiler 9092options used during generation. 9093 9094 Previous Release 9095 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 9096 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 9097 Current Release: 9098 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 9099 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 9100 9101 91022) Linux 9103 9104Fixed a panic in the EC driver (Dominik Brodowski) 9105 9106Implemented checksum of the R/XSDT itself during Linux table scan 9107(Richard Schaal) 9108 9109 91103) iASL compiler 9111 9112The AML disassembler is integrated into the compiler. The "-d" 9113option invokes the disassembler to completely disassemble an 9114input AML file, producing as output a text ASL file with the 9115extension ".dsl" (to avoid name collisions with existing .asl 9116source files.) A future enhancement will allow the disassembler 9117to obtain the BIOS DSDT from the registry under Windows. 9118 9119Fixed a problem with the VendorShort and VendorLong resource 9120descriptors where an invalid AML sequence was created. 9121 9122Implemented a fix for BufferData term in the ASL parser. It was 9123inadvertently defined twice, allowing invalid syntax to pass and 9124causing reduction conflicts. 9125 9126Fixed a problem where the Ones opcode could get converted to a 9127value of zero if "Ones" was used where a byte, word or dword value 9128was expected. The 64-bit value is now truncated to the correct 9129size with the correct value. 9130 9131 9132 9133---------------------------------------- 913402 July 2002. Summary of changes for this release. 9135 9136 91371) ACPI CA Core Subsystem Version 20020702: 9138 9139The Table Manager code has been restructured to add several new 9140features. Tables that are not required by the core subsystem 9141(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 9142validated in any way and are returned from AcpiGetFirmwareTable if 9143requested. The AcpiOsTableOverride interface is now called for 9144each table that is loaded by the subsystem in order to allow the 9145host to override any table it chooses. Previously, only the DSDT 9146could be overridden. Added one new files, tbrsdt.c and 9147tbgetall.c. 9148 9149Fixed a problem with the conversion of internal package objects to 9150external objects (when a package is returned from a control 9151method.) The return buffer length was set to zero instead of the 9152proper length of the package object. 9153 9154Fixed a reported problem with the use of the RefOf and DeRefOf 9155operators when passing reference arguments to control methods. A 9156new type of Reference object is used internally for references 9157produced by the RefOf operator. 9158 9159Added additional error messages in the Resource Manager to explain 9160AE_BAD_DATA errors when they occur during resource parsing. 9161 9162Split the AcpiEnableSubsystem into two primitives to enable a 9163finer granularity initialization sequence. These two calls should 9164be called in this order: AcpiEnableSubsystem (flags), 9165AcpiInitializeObjects (flags). The flags parameter remains the 9166same. 9167 9168 91692) Linux 9170 9171Updated the ACPI utilities module to understand the new style of 9172fully resolved package objects that are now returned from the core 9173subsystem. This eliminates errors of the form: 9174 9175 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 9176 acpi_utils-0430 [145] acpi_evaluate_reference: 9177 Invalid element in package (not a device reference) 9178 9179The method evaluation utility uses the new buffer allocation 9180scheme instead of calling AcpiEvaluate Object twice. 9181 9182Added support for ECDT. This allows the use of the Embedded 9183 9184Controller before the namespace has been fully initialized, which 9185is necessary for ACPI 2.0 support, and for some laptops to 9186initialize properly. (Laptops using ECDT are still rare, so only 9187limited testing was performed of the added functionality.) 9188 9189Fixed memory leaks in the EC driver. 9190 9191Eliminated a brittle code structure in acpi_bus_init(). 9192 9193Eliminated the acpi_evaluate() helper function in utils.c. It is 9194no longer needed since acpi_evaluate_object can optionally 9195allocate memory for the return object. 9196 9197Implemented fix for keyboard hang when getting battery readings on 9198some systems (Stephen White) 9199 9200PCI IRQ routing update (Dominik Brodowski) 9201 9202Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 9203support 9204 9205---------------------------------------- 920611 June 2002. Summary of changes for this release. 9207 9208 92091) ACPI CA Core Subsystem Version 20020611: 9210 9211Fixed a reported problem where constants such as Zero and One 9212appearing within _PRT packages were not handled correctly within 9213the resource manager code. Originally reported against the ASL 9214compiler because the code generator now optimizes integers to 9215their minimal AML representation (i.e. AML constants if possible.) 9216The _PRT code now handles all AML constant opcodes correctly 9217(Zero, One, Ones, Revision). 9218 9219Fixed a problem with the Concatenate operator in the AML 9220interpreter where a buffer result object was incorrectly marked as 9221not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 9222 9223All package sub-objects are now fully resolved before they are 9224returned from the external ACPI interfaces. This means that name 9225strings are resolved to object handles, and constant operators 9226(Zero, One, Ones, Revision) are resolved to Integers. 9227 9228Implemented immediate resolution of the AML Constant opcodes 9229(Zero, One, Ones, Revision) to Integer objects upon detection 9230within the AML stream. This has simplified and reduced the 9231generated code size of the subsystem by eliminating about 10 9232switch statements for these constants (which previously were 9233contained in Reference objects.) The complicating issues are that 9234the Zero opcode is used as a "placeholder" for unspecified 9235optional target operands and stores to constants are defined to be 9236no-ops. 9237 9238Code and Data Size: Current core subsystem library sizes are shown 9239below. These are the code and data sizes for the acpica.lib 9240produced by the Microsoft Visual C++ 6.0 compiler, and these 9241values do not include any ACPI driver or OSPM code. The debug 9242version of the code includes the debug output trace mechanism and 9243has a larger code and data size. Note that these values will vary 9244depending on the efficiency of the compiler and the compiler 9245options used during generation. 9246 9247 Previous Release 9248 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 9249 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 9250 Current Release: 9251 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 9252 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 9253 9254 92552) Linux 9256 9257 9258Added preliminary support for obtaining _TRA data for PCI root 9259bridges (Bjorn Helgaas). 9260 9261 92623) iASL Compiler Version X2046: 9263 9264Fixed a problem where the "_DDN" reserved name was defined to be a 9265control method with one argument. There are no arguments, and 9266_DDN does not have to be a control method. 9267 9268Fixed a problem with the Linux version of the compiler where the 9269source lines printed with error messages were the wrong lines. 9270This turned out to be the "LF versus CR/LF" difference between 9271Windows and Unix. This appears to be the longstanding issue 9272concerning listing output and error messages. 9273 9274Fixed a problem with the Linux version of compiler where opcode 9275names within error messages were wrong. This was caused by a 9276slight difference in the output of the Flex tool on Linux versus 9277Windows. 9278 9279Fixed a problem with the Linux compiler where the hex output files 9280contained some garbage data caused by an internal buffer overrun. 9281 9282 9283---------------------------------------- 928417 May 2002. Summary of changes for this release. 9285 9286 92871) ACPI CA Core Subsystem Version 20020517: 9288 9289Implemented a workaround to an BIOS bug discovered on the HP 9290OmniBook where the FADT revision number and the table size are 9291inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 9292behavior is to fallback to using only the ACPI 1.0 fields of the 9293FADT if the table is too small to be a ACPI 2.0 table as claimed 9294by the revision number. Although this is a BIOS bug, this is a 9295case where the workaround is simple enough and with no side 9296effects, so it seemed prudent to add it. A warning message is 9297issued, however. 9298 9299Implemented minimum size checks for the fixed-length ACPI tables - 9300- the FADT and FACS, as well as consistency checks between the 9301revision number and the table size. 9302 9303Fixed a reported problem in the table override support where the 9304new table pointer was incorrectly treated as a physical address 9305instead of a logical address. 9306 9307Eliminated the use of the AE_AML_ERROR exception and replaced it 9308with more descriptive codes. 9309 9310Fixed a problem where an exception would occur if an ASL Field was 9311defined with no named Field Units underneath it (used by some 9312index fields). 9313 9314Code and Data Size: Current core subsystem library sizes are shown 9315below. These are the code and data sizes for the acpica.lib 9316produced by the Microsoft Visual C++ 6.0 compiler, and these 9317values do not include any ACPI driver or OSPM code. The debug 9318version of the code includes the debug output trace mechanism and 9319has a larger code and data size. Note that these values will vary 9320depending on the efficiency of the compiler and the compiler 9321options used during generation. 9322 9323 Previous Release 9324 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 9325 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 9326 Current Release: 9327 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 9328 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 9329 9330 9331 93322) Linux 9333 9334Much work done on ACPI init (MADT and PCI IRQ routing support). 9335(Paul D. and Dominik Brodowski) 9336 9337Fix PCI IRQ-related panic on boot (Sam Revitch) 9338 9339Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 9340 9341Fix "MHz" typo (Dominik Brodowski) 9342 9343Fix RTC year 2000 issue (Dominik Brodowski) 9344 9345Preclude multiple button proc entries (Eric Brunet) 9346 9347Moved arch-specific code out of include/platform/aclinux.h 9348 93493) iASL Compiler Version X2044: 9350 9351Implemented error checking for the string used in the EISAID macro 9352(Usually used in the definition of the _HID object.) The code now 9353strictly enforces the PnP format - exactly 7 characters, 3 9354uppercase letters and 4 hex digits. 9355 9356If a raw string is used in the definition of the _HID object 9357(instead of the EISAID macro), the string must contain all 9358alphanumeric characters (e.g., "*PNP0011" is not allowed because 9359of the asterisk.) 9360 9361Implemented checking for invalid use of ACPI reserved names for 9362most of the name creation operators (Name, Device, Event, Mutex, 9363OperationRegion, PowerResource, Processor, and ThermalZone.) 9364Previously, this check was only performed for control methods. 9365 9366Implemented an additional check on the Name operator to emit an 9367error if a reserved name that must be implemented in ASL as a 9368control method is used. We know that a reserved name must be a 9369method if it is defined with input arguments. 9370 9371The warning emitted when a namespace object reference is not found 9372during the cross reference phase has been changed into an error. 9373The "External" directive should be used for names defined in other 9374modules. 9375 9376 93774) Tools and Utilities 9378 9379The 16-bit tools (adump16 and aexec16) have been regenerated and 9380tested. 9381 9382Fixed a problem with the output of both acpidump and adump16 where 9383the indentation of closing parentheses and brackets was not 9384 9385aligned properly with the parent block. 9386 9387 9388---------------------------------------- 938903 May 2002. Summary of changes for this release. 9390 9391 93921) ACPI CA Core Subsystem Version 20020503: 9393 9394Added support a new OSL interface that allows the host operating 9395 9396system software to override the DSDT found in the firmware - 9397AcpiOsTableOverride. With this interface, the OSL can examine the 9398version of the firmware DSDT and replace it with a different one 9399if desired. 9400 9401Added new external interfaces for accessing ACPI registers from 9402device drivers and other system software - AcpiGetRegister and 9403AcpiSetRegister. This was simply an externalization of the 9404existing AcpiHwBitRegister interfaces. 9405 9406Fixed a regression introduced in the previous build where the 9407ASL/AML CreateField operator always returned an error, 9408"destination must be a NS Node". 9409 9410Extended the maximum time (before failure) to successfully enable 9411ACPI mode to 3 seconds. 9412 9413Code and Data Size: Current core subsystem library sizes are shown 9414below. These are the code and data sizes for the acpica.lib 9415produced by the Microsoft Visual C++ 6.0 compiler, and these 9416values do not include any ACPI driver or OSPM code. The debug 9417version of the code includes the debug output trace mechanism and 9418has a larger code and data size. Note that these values will vary 9419depending on the efficiency of the compiler and the compiler 9420options used during generation. 9421 9422 Previous Release 9423 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 9424 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 9425 Current Release: 9426 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 9427 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 9428 9429 94302) Linux 9431 9432Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 9433free. While 3 out of 4 of our in-house systems work fine, the last 9434one still hangs when testing the LAPIC timer. 9435 9436Renamed many files in 2.5 kernel release to omit "acpi_" from the 9437name. 9438 9439Added warning on boot for Presario 711FR. 9440 9441Sleep improvements (Pavel Machek) 9442 9443ACPI can now be built without CONFIG_PCI enabled. 9444 9445IA64: Fixed memory map functions (JI Lee) 9446 9447 94483) iASL Compiler Version X2043: 9449 9450Added support to allow the compiler to be integrated into the MS 9451VC++ development environment for one-button compilation of single 9452files or entire projects -- with error-to-source-line mapping. 9453 9454Implemented support for compile-time constant folding for the 9455Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 9456specification. This allows the ASL writer to use expressions 9457instead of Integer/Buffer/String constants in terms that must 9458evaluate to constants at compile time and will also simplify the 9459emitted AML in any such sub-expressions that can be folded 9460(evaluated at compile-time.) This increases the size of the 9461compiler significantly because a portion of the ACPI CA AML 9462interpreter is included within the compiler in order to pre- 9463evaluate constant expressions. 9464 9465 9466Fixed a problem with the "Unicode" ASL macro that caused the 9467compiler to fault. (This macro is used in conjunction with the 9468_STR reserved name.) 9469 9470Implemented an AML opcode optimization to use the Zero, One, and 9471Ones opcodes where possible to further reduce the size of integer 9472constants and thus reduce the overall size of the generated AML 9473code. 9474 9475Implemented error checking for new reserved terms for ACPI version 94762.0A. 9477 9478Implemented the -qr option to display the current list of ACPI 9479reserved names known to the compiler. 9480 9481Implemented the -qc option to display the current list of ASL 9482operators that are allowed within constant expressions and can 9483therefore be folded at compile time if the operands are constants. 9484 9485 94864) Documentation 9487 9488Updated the Programmer's Reference for new interfaces, data types, 9489and memory allocation model options. 9490 9491Updated the iASL Compiler User Reference to apply new format and 9492add information about new features and options. 9493 9494---------------------------------------- 949519 April 2002. Summary of changes for this release. 9496 94971) ACPI CA Core Subsystem Version 20020419: 9498 9499The source code base for the Core Subsystem has been completely 9500cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 9501versions. The Lint option files used are included in the 9502/acpi/generate/lint directory. 9503 9504Implemented enhanced status/error checking across the entire 9505Hardware manager subsystem. Any hardware errors (reported from 9506the OSL) are now bubbled up and will abort a running control 9507method. 9508 9509 9510Fixed a problem where the per-ACPI-table integer width (32 or 64) 9511was stored only with control method nodes, causing a fault when 9512non-control method code was executed during table loading. The 9513solution implemented uses a global variable to indicate table 9514width across the entire ACPI subsystem. Therefore, ACPI CA does 9515not support mixed integer widths across different ACPI tables 9516(DSDT, SSDT). 9517 9518Fixed a problem where NULL extended fields (X fields) in an ACPI 95192.0 ACPI FADT caused the table load to fail. Although the 9520existing ACPI specification is a bit fuzzy on this topic, the new 9521behavior is to fall back on a ACPI 1.0 field if the corresponding 9522ACPI 2.0 X field is zero (even though the table revision indicates 9523a full ACPI 2.0 table.) The ACPI specification will be updated to 9524clarify this issue. 9525 9526Fixed a problem with the SystemMemory operation region handler 9527where memory was always accessed byte-wise even if the AML- 9528specified access width was larger than a byte. This caused 9529problems on systems with memory-mapped I/O. Memory is now 9530accessed with the width specified. On systems that do not support 9531non-aligned transfers, a check is made to guarantee proper address 9532alignment before proceeding in order to avoid an AML-caused 9533alignment fault within the kernel. 9534 9535 9536Fixed a problem with the ExtendedIrq resource where only one byte 9537of the 4-byte Irq field was extracted. 9538 9539Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 9540function was out of date and required a rewrite. 9541 9542Code and Data Size: Current core subsystem library sizes are shown 9543below. These are the code and data sizes for the acpica.lib 9544produced by the Microsoft Visual C++ 6.0 compiler, and these 9545values do not include any ACPI driver or OSPM code. The debug 9546version of the code includes the debug output trace mechanism and 9547has a larger code and data size. Note that these values will vary 9548depending on the efficiency of the compiler and the compiler 9549options used during generation. 9550 9551 Previous Release 9552 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9553 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9554 Current Release: 9555 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 9556 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 9557 9558 95592) Linux 9560 9561PCI IRQ routing fixes (Dominik Brodowski) 9562 9563 95643) iASL Compiler Version X2042: 9565 9566Implemented an additional compile-time error check for a field 9567unit whose size + minimum access width would cause a run-time 9568access beyond the end-of-region. Previously, only the field size 9569itself was checked. 9570 9571The Core subsystem and iASL compiler now share a common parse 9572object in preparation for compile-time evaluation of the type 95733/4/5 ASL operators. 9574 9575 9576---------------------------------------- 9577Summary of changes for this release: 03_29_02 9578 95791) ACPI CA Core Subsystem Version 20020329: 9580 9581Implemented support for late evaluation of TermArg operands to 9582Buffer and Package objects. This allows complex expressions to be 9583used in the declarations of these object types. 9584 9585Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 95861.0, if the field was larger than 32 bits, it was returned as a 9587buffer - otherwise it was returned as an integer. In ACPI 2.0, 9588the field is returned as a buffer only if the field is larger than 958964 bits. The TableRevision is now considered when making this 9590conversion to avoid incompatibility with existing ASL code. 9591 9592Implemented logical addressing for AcpiOsGetRootPointer. This 9593allows an RSDP with either a logical or physical address. With 9594this support, the host OS can now override all ACPI tables with 9595one logical RSDP. Includes implementation of "typed" pointer 9596support to allow a common data type for both physical and logical 9597pointers internally. This required a change to the 9598AcpiOsGetRootPointer interface. 9599 9600Implemented the use of ACPI 2.0 Generic Address Structures for all 9601GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 9602mapped I/O for these ACPI features. 9603 9604Initialization now ignores not only non-required tables (All 9605tables other than the FADT, FACS, DSDT, and SSDTs), but also does 9606not validate the table headers of unrecognized tables. 9607 9608Fixed a problem where a notify handler could only be 9609installed/removed on an object of type Device. All "notify" 9610 9611objects are now supported -- Devices, Processor, Power, and 9612Thermal. 9613 9614Removed most verbosity from the ACPI_DB_INFO debug level. Only 9615critical information is returned when this debug level is enabled. 9616 9617Code and Data Size: Current core subsystem library sizes are shown 9618below. These are the code and data sizes for the acpica.lib 9619produced by the Microsoft Visual C++ 6.0 compiler, and these 9620values do not include any ACPI driver or OSPM code. The debug 9621version of the code includes the debug output trace mechanism and 9622has a larger code and data size. Note that these values will vary 9623depending on the efficiency of the compiler and the compiler 9624options used during generation. 9625 9626 Previous Release 9627 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9628 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9629 Current Release: 9630 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 9631 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 9632 9633 96342) Linux: 9635 9636The processor driver (acpi_processor.c) now fully supports ACPI 96372.0-based processor performance control (e.g. Intel(R) 9638SpeedStep(TM) technology) Note that older laptops that only have 9639the Intel "applet" interface are not supported through this. The 9640'limit' and 'performance' interface (/proc) are fully functional. 9641[Note that basic policy for controlling performance state 9642transitions will be included in the next version of ospmd.] The 9643idle handler was modified to more aggressively use C2, and PIIX4 9644errata handling underwent a complete overhaul (big thanks to 9645Dominik Brodowski). 9646 9647Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 9648based devices in the ACPI namespace are now dynamically bound 9649(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 9650This allows, among other things, ACPI to resolve bus numbers for 9651subordinate PCI bridges. 9652 9653Enhanced PCI IRQ routing to get the proper bus number for _PRT 9654entries defined underneath PCI bridges. 9655 9656Added IBM 600E to bad bios list due to invalid _ADR value for 9657PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 9658 9659In the process of adding full MADT support (e.g. IOAPIC) for IA32 9660(acpi.c, mpparse.c) -- stay tuned. 9661 9662Added back visual differentiation between fixed-feature and 9663control-method buttons in dmesg. Buttons are also subtyped (e.g. 9664button/power/PWRF) to simplify button identification. 9665 9666We no longer use -Wno-unused when compiling debug. Please ignore 9667any "_THIS_MODULE defined but not used" messages. 9668 9669Can now shut down the system using "magic sysrq" key. 9670 9671 96723) iASL Compiler version 2041: 9673 9674Fixed a problem where conversion errors for hex/octal/decimal 9675constants were not reported. 9676 9677Implemented a fix for the General Register template Address field. 9678This field was 8 bits when it should be 64. 9679 9680Fixed a problem where errors/warnings were no longer being emitted 9681within the listing output file. 9682 9683Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 9684exactly 4 characters, alphanumeric only. 9685 9686 9687 9688 9689---------------------------------------- 9690Summary of changes for this release: 03_08_02 9691 9692 96931) ACPI CA Core Subsystem Version 20020308: 9694 9695Fixed a problem with AML Fields where the use of the "AccessAny" 9696keyword could cause an interpreter error due to attempting to read 9697or write beyond the end of the parent Operation Region. 9698 9699Fixed a problem in the SystemMemory Operation Region handler where 9700an attempt was made to map memory beyond the end of the region. 9701This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 9702errors on some Linux systems. 9703 9704Fixed a problem where the interpreter/namespace "search to root" 9705algorithm was not functioning for some object types. Relaxed the 9706internal restriction on the search to allow upsearches for all 9707external object types as well as most internal types. 9708 9709 97102) Linux: 9711 9712We now use safe_halt() macro versus individual calls to sti | hlt. 9713 9714Writing to the processor limit interface should now work. "echo 1" 9715will increase the limit, 2 will decrease, and 0 will reset to the 9716 9717default. 9718 9719 97203) ASL compiler: 9721 9722Fixed segfault on Linux version. 9723 9724 9725---------------------------------------- 9726Summary of changes for this release: 02_25_02 9727 97281) ACPI CA Core Subsystem: 9729 9730 9731Fixed a problem where the GPE bit masks were not initialized 9732properly, causing erratic GPE behavior. 9733 9734Implemented limited support for multiple calling conventions. The 9735code can be generated with either the VPL (variable parameter 9736list, or "C") convention, or the FPL (fixed parameter list, or 9737"Pascal") convention. The core subsystem is about 3.4% smaller 9738when generated with FPL. 9739 9740 97412) Linux 9742 9743Re-add some /proc/acpi/event functionality that was lost during 9744the rewrite 9745 9746Resolved issue with /proc events for fixed-feature buttons showing 9747up as the system device. 9748 9749Fixed checks on C2/C3 latencies to be inclusive of maximum values. 9750 9751Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 9752 9753Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 9754 9755Fixed limit interface & usage to fix bugs with passive cooling 9756hysterisis. 9757 9758Restructured PRT support. 9759 9760 9761---------------------------------------- 9762Summary of changes for this label: 02_14_02 9763 9764 97651) ACPI CA Core Subsystem: 9766 9767Implemented support in AcpiLoadTable to allow loading of FACS and 9768FADT tables. 9769 9770Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 9771been removed. All 64-bit platforms should be migrated to the ACPI 97722.0 tables. The actbl71.h header has been removed from the source 9773tree. 9774 9775All C macros defined within the subsystem have been prefixed with 9776"ACPI_" to avoid collision with other system include files. 9777 9778Removed the return value for the two AcpiOsPrint interfaces, since 9779it is never used and causes lint warnings for ignoring the return 9780value. 9781 9782Added error checking to all internal mutex acquire and release 9783calls. Although a failure from one of these interfaces is 9784probably a fatal system error, these checks will cause the 9785immediate abort of the currently executing method or interface. 9786 9787Fixed a problem where the AcpiSetCurrentResources interface could 9788fault. This was a side effect of the deployment of the new memory 9789allocation model. 9790 9791Fixed a couple of problems with the Global Lock support introduced 9792in the last major build. The "common" (1.0/2.0) internal FACS was 9793being overwritten with the FACS signature and clobbering the 9794Global Lock pointer. Also, the actual firmware FACS was being 9795unmapped after construction of the "common" FACS, preventing 9796access to the actual Global Lock field within it. The "common" 9797internal FACS is no longer installed as an actual ACPI table; it 9798is used simply as a global. 9799 9800Code and Data Size: Current core subsystem library sizes are shown 9801below. These are the code and data sizes for the acpica.lib 9802produced by the Microsoft Visual C++ 6.0 compiler, and these 9803values do not include any ACPI driver or OSPM code. The debug 9804version of the code includes the debug output trace mechanism and 9805has a larger code and data size. Note that these values will vary 9806depending on the efficiency of the compiler and the compiler 9807options used during generation. 9808 9809 Previous Release (02_07_01) 9810 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9811 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9812 Current Release: 9813 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 9814 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 9815 9816 98172) Linux 9818 9819Updated Linux-specific code for core macro and OSL interface 9820changes described above. 9821 9822Improved /proc/acpi/event. It now can be opened only once and has 9823proper poll functionality. 9824 9825Fixed and restructured power management (acpi_bus). 9826 9827Only create /proc "view by type" when devices of that class exist. 9828 9829Fixed "charging/discharging" bug (and others) in acpi_battery. 9830 9831Improved thermal zone code. 9832 9833 98343) ASL Compiler, version X2039: 9835 9836 9837Implemented the new compiler restriction on ASL String hex/octal 9838escapes to non-null, ASCII values. An error results if an invalid 9839value is used. (This will require an ACPI 2.0 specification 9840change.) 9841 9842AML object labels that are output to the optional C and ASM source 9843are now prefixed with both the ACPI table signature and table ID 9844to help guarantee uniqueness within a large BIOS project. 9845 9846 9847---------------------------------------- 9848Summary of changes for this label: 02_01_02 9849 98501) ACPI CA Core Subsystem: 9851 9852ACPI 2.0 support is complete in the entire Core Subsystem and the 9853ASL compiler. All new ACPI 2.0 operators are implemented and all 9854other changes for ACPI 2.0 support are complete. With 9855simultaneous code and data optimizations throughout the subsystem, 9856ACPI 2.0 support has been implemented with almost no additional 9857cost in terms of code and data size. 9858 9859Implemented a new mechanism for allocation of return buffers. If 9860the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 9861be allocated on behalf of the caller. Consolidated all return 9862buffer validation and allocation to a common procedure. Return 9863buffers will be allocated via the primary OSL allocation interface 9864since it appears that a separate pool is not needed by most users. 9865If a separate pool is required for these buffers, the caller can 9866still use the original mechanism and pre-allocate the buffer(s). 9867 9868Implemented support for string operands within the DerefOf 9869operator. 9870 9871Restructured the Hardware and Event managers to be table driven, 9872simplifying the source code and reducing the amount of generated 9873code. 9874 9875Split the common read/write low-level ACPI register bitfield 9876procedure into a separate read and write, simplifying the code 9877considerably. 9878 9879Obsoleted the AcpiOsCallocate OSL interface. This interface was 9880used only a handful of times and didn't have enough critical mass 9881for a separate interface. Replaced with a common calloc procedure 9882in the core. 9883 9884Fixed a reported problem with the GPE number mapping mechanism 9885that allows GPE1 numbers to be non-contiguous with GPE0. 9886Reorganized the GPE information and shrunk a large array that was 9887originally large enough to hold info for all possible GPEs (256) 9888to simply large enough to hold all GPEs up to the largest GPE 9889number on the machine. 9890 9891Fixed a reported problem with resource structure alignment on 64- 9892bit platforms. 9893 9894Changed the AcpiEnableEvent and AcpiDisableEvent external 9895interfaces to not require any flags for the common case of 9896enabling/disabling a GPE. 9897 9898Implemented support to allow a "Notify" on a Processor object. 9899 9900Most TBDs in comments within the source code have been resolved 9901and eliminated. 9902 9903 9904Fixed a problem in the interpreter where a standalone parent 9905prefix (^) was not handled correctly in the interpreter and 9906debugger. 9907 9908Removed obsolete and unnecessary GPE save/restore code. 9909 9910Implemented Field support in the ASL Load operator. This allows a 9911table to be loaded from a named field, in addition to loading a 9912table directly from an Operation Region. 9913 9914Implemented timeout and handle support in the external Global Lock 9915interfaces. 9916 9917Fixed a problem in the AcpiDump utility where pathnames were no 9918longer being generated correctly during the dump of named objects. 9919 9920Modified the AML debugger to give a full display of if/while 9921predicates instead of just one AML opcode at a time. (The 9922predicate can have several nested ASL statements.) The old method 9923was confusing during single stepping. 9924 9925Code and Data Size: Current core subsystem library sizes are shown 9926below. These are the code and data sizes for the acpica.lib 9927produced by the Microsoft Visual C++ 6.0 compiler, and these 9928values do not include any ACPI driver or OSPM code. The debug 9929version of the code includes the debug output trace mechanism and 9930has a larger code and data size. Note that these values will vary 9931depending on the efficiency of the compiler and the compiler 9932options used during generation. 9933 9934 Previous Release (12_18_01) 9935 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9936 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9937 Current Release: 9938 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9939 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9940 99412) Linux 9942 9943 Implemented fix for PIIX reverse throttling errata (Processor 9944driver) 9945 9946Added new Limit interface (Processor and Thermal drivers) 9947 9948New thermal policy (Thermal driver) 9949 9950Many updates to /proc 9951 9952Battery "low" event support (Battery driver) 9953 9954Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9955 9956IA32 - IA64 initialization unification, no longer experimental 9957 9958Menuconfig options redesigned 9959 99603) ASL Compiler, version X2037: 9961 9962Implemented several new output features to simplify integration of 9963AML code into firmware: 1) Output the AML in C source code with 9964labels for each named ASL object. The original ASL source code 9965is interleaved as C comments. 2) Output the AML in ASM source code 9966with labels and interleaved ASL source. 3) Output the AML in 9967raw hex table form, in either C or ASM. 9968 9969Implemented support for optional string parameters to the 9970LoadTable operator. 9971 9972Completed support for embedded escape sequences within string 9973literals. The compiler now supports all single character escapes 9974as well as the Octal and Hex escapes. Note: the insertion of a 9975null byte into a string literal (via the hex/octal escape) causes 9976the string to be immediately terminated. A warning is issued. 9977 9978Fixed a problem where incorrect AML was generated for the case 9979where an ASL namepath consists of a single parent prefix ( 9980 9981) with no trailing name segments. 9982 9983The compiler has been successfully generated with a 64-bit C 9984compiler. 9985 9986 9987 9988 9989---------------------------------------- 9990Summary of changes for this label: 12_18_01 9991 99921) Linux 9993 9994Enhanced blacklist with reason and severity fields. Any table's 9995signature may now be used to identify a blacklisted system. 9996 9997Call _PIC control method to inform the firmware which interrupt 9998model the OS is using. Turn on any disabled link devices. 9999 10000Cleaned up busmgr /proc error handling (Andreas Dilger) 10001 10002 2) ACPI CA Core Subsystem: 10003 10004Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 10005while loop) 10006 10007Completed implementation of the ACPI 2.0 "Continue", 10008"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 10009operators. All new ACPI 2.0 operators are now implemented in both 10010the ASL compiler and the AML interpreter. The only remaining ACPI 100112.0 task is support for the String data type in the DerefOf 10012operator. Fixed a problem with AcquireMutex where the status code 10013was lost if the caller had to actually wait for the mutex. 10014 10015Increased the maximum ASL Field size from 64K bits to 4G bits. 10016 10017Completed implementation of the external Global Lock interfaces -- 10018AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 10019Handler parameters were added. 10020 10021Completed another pass at removing warnings and issues when 10022compiling with 64-bit compilers. The code now compiles cleanly 10023with the Intel 64-bit C/C++ compiler. Most notably, the pointer 10024add and subtract (diff) macros have changed considerably. 10025 10026 10027Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1002864-bit platforms, 32-bits on all others. This type is used 10029wherever memory allocation and/or the C sizeof() operator is used, 10030and affects the OSL memory allocation interfaces AcpiOsAllocate 10031and AcpiOsCallocate. 10032 10033Implemented sticky user breakpoints in the AML debugger. 10034 10035Code and Data Size: Current core subsystem library sizes are shown 10036below. These are the code and data sizes for the acpica.lib 10037produced by the Microsoft Visual C++ 6.0 compiler, and these 10038values do not include any ACPI driver or OSPM code. The debug 10039version of the code includes the debug output trace mechanism and 10040has a larger code and data size. Note that these values will vary 10041depending on the efficiency of the compiler and the compiler 10042options used during generation. 10043 10044 Previous Release (12_05_01) 10045 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 10046 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 10047 Current Release: 10048 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 10049 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 10050 10051 3) ASL Compiler, version X2034: 10052 10053Now checks for (and generates an error if detected) the use of a 10054Break or Continue statement without an enclosing While statement. 10055 10056 10057Successfully generated the compiler with the Intel 64-bit C 10058compiler. 10059 10060 ---------------------------------------- 10061Summary of changes for this label: 12_05_01 10062 10063 1) ACPI CA Core Subsystem: 10064 10065The ACPI 2.0 CopyObject operator is fully implemented. This 10066operator creates a new copy of an object (and is also used to 10067bypass the "implicit conversion" mechanism of the Store operator.) 10068 10069The ACPI 2.0 semantics for the SizeOf operator are fully 10070implemented. The change is that performing a SizeOf on a 10071reference object causes an automatic dereference of the object to 10072tha actual value before the size is evaluated. This behavior was 10073undefined in ACPI 1.0. 10074 10075The ACPI 2.0 semantics for the Extended IRQ resource descriptor 10076have been implemented. The interrupt polarity and mode are now 10077independently set. 10078 10079Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 10080appearing in Package objects were not properly converted to 10081integers when the internal Package was converted to an external 10082object (via the AcpiEvaluateObject interface.) 10083 10084Fixed a problem with the namespace object deletion mechanism for 10085objects created by control methods. There were two parts to this 10086problem: 1) Objects created during the initialization phase method 10087parse were not being deleted, and 2) The object owner ID mechanism 10088to track objects was broken. 10089 10090Fixed a problem where the use of the ASL Scope operator within a 10091control method would result in an invalid opcode exception. 10092 10093Fixed a problem introduced in the previous label where the buffer 10094length required for the _PRT structure was not being returned 10095correctly. 10096 10097Code and Data Size: Current core subsystem library sizes are shown 10098below. These are the code and data sizes for the acpica.lib 10099produced by the Microsoft Visual C++ 6.0 compiler, and these 10100values do not include any ACPI driver or OSPM code. The debug 10101version of the code includes the debug output trace mechanism and 10102has a larger code and data size. Note that these values will vary 10103depending on the efficiency of the compiler and the compiler 10104options used during generation. 10105 10106 Previous Release (11_20_01) 10107 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 10108 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 10109 10110 Current Release: 10111 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 10112 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 10113 10114 2) Linux: 10115 10116Updated all files to apply cleanly against 2.4.16. 10117 10118Added basic PCI Interrupt Routing Table (PRT) support for IA32 10119(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 10120version supports both static and dyanmic PRT entries, but dynamic 10121entries are treated as if they were static (not yet 10122reconfigurable). Architecture- specific code to use this data is 10123absent on IA32 but should be available shortly. 10124 10125Changed the initialization sequence to start the ACPI interpreter 10126(acpi_init) prior to initialization of the PCI driver (pci_init) 10127in init/main.c. This ordering is required to support PRT and 10128facilitate other (future) enhancement. A side effect is that the 10129ACPI bus driver and certain device drivers can no longer be loaded 10130as modules. 10131 10132Modified the 'make menuconfig' options to allow PCI Interrupt 10133Routing support to be included without the ACPI Bus and other 10134device drivers. 10135 10136 3) ASL Compiler, version X2033: 10137 10138Fixed some issues with the use of the new CopyObject and 10139DataTableRegion operators. Both are fully functional. 10140 10141 ---------------------------------------- 10142Summary of changes for this label: 11_20_01 10143 10144 20 November 2001. Summary of changes for this release. 10145 10146 1) ACPI CA Core Subsystem: 10147 10148Updated Index support to match ACPI 2.0 semantics. Storing a 10149Integer, String, or Buffer to an Index of a Buffer will store only 10150the least-significant byte of the source to the Indexed buffer 10151byte. Multiple writes are not performed. 10152 10153Fixed a problem where the access type used in an AccessAs ASL 10154operator was not recorded correctly into the field object. 10155 10156Fixed a problem where ASL Event objects were created in a 10157signalled state. Events are now created in an unsignalled state. 10158 10159The internal object cache is now purged after table loading and 10160initialization to reduce the use of dynamic kernel memory -- on 10161the assumption that object use is greatest during the parse phase 10162of the entire table (versus the run-time use of individual control 10163methods.) 10164 10165ACPI 2.0 variable-length packages are now fully operational. 10166 10167Code and Data Size: Code and Data optimizations have permitted new 10168feature development with an actual reduction in the library size. 10169Current core subsystem library sizes are shown below. These are 10170the code and data sizes for the acpica.lib produced by the 10171Microsoft Visual C++ 6.0 compiler, and these values do not include 10172any ACPI driver or OSPM code. The debug version of the code 10173includes the debug output trace mechanism and has a larger code 10174and data size. Note that these values will vary depending on the 10175efficiency of the compiler and the compiler options used during 10176generation. 10177 10178 Previous Release (11_09_01): 10179 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 10180 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 10181 10182 Current Release: 10183 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 10184 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 10185 10186 2) Linux: 10187 10188Enhanced the ACPI boot-time initialization code to allow the use 10189of Local APIC tables for processor enumeration on IA-32, and to 10190pave the way for a fully MPS-free boot (on SMP systems) in the 10191near future. This functionality replaces 10192arch/i386/kernel/acpitables.c, which was introduced in an earlier 101932.4.15-preX release. To enable this feature you must add 10194"acpi_boot=on" to the kernel command line -- see the help entry 10195for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 10196the works... 10197 10198Restructured the configuration options to allow boot-time table 10199parsing support without inclusion of the ACPI Interpreter (and 10200other) code. 10201 10202NOTE: This release does not include fixes for the reported events, 10203power-down, and thermal passive cooling issues (coming soon). 10204 10205 3) ASL Compiler: 10206 10207Added additional typechecking for Fields within restricted access 10208Operation Regions. All fields within EC and CMOS regions must be 10209declared with ByteAcc. All fields withing SMBus regions must be 10210declared with the BufferAcc access type. 10211 10212Fixed a problem where the listing file output of control methods 10213no longer interleaved the actual AML code with the ASL source 10214code. 10215 10216 10217 10218 10219---------------------------------------- 10220Summary of changes for this label: 11_09_01 10221 102221) ACPI CA Core Subsystem: 10223 10224Implemented ACPI 2.0-defined support for writes to fields with a 10225Buffer, String, or Integer source operand that is smaller than the 10226target field. In these cases, the source operand is zero-extended 10227to fill the target field. 10228 10229Fixed a problem where a Field starting bit offset (within the 10230parent operation region) was calculated incorrectly if the 10231 10232alignment of the field differed from the access width. This 10233affected CreateWordField, CreateDwordField, CreateQwordField, and 10234possibly other fields that use the "AccessAny" keyword. 10235 10236Fixed a problem introduced in the 11_02_01 release where indirect 10237stores through method arguments did not operate correctly. 10238 102392) Linux: 10240 10241Implemented boot-time ACPI table parsing support 10242(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 10243facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 10244legacy BIOS interfaces (e.g. MPS) for the configuration of system 10245processors, memory, and interrupts during setup_arch(). Note that 10246this patch does not include the required architecture-specific 10247changes required to apply this information -- subsequent patches 10248will be posted for both IA32 and IA64 to achieve this. 10249 10250Added low-level sleep support for IA32 platforms, courtesy of Pat 10251Mochel. This allows IA32 systems to transition to/from various 10252sleeping states (e.g. S1, S3), although the lack of a centralized 10253driver model and power-manageable drivers will prevent its 10254(successful) use on most systems. 10255 10256Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 10257submenu, unified IA32 and IA64 options, added new "Boot using ACPI 10258tables" option, etc. 10259 10260Increased the default timeout for the EC driver from 1ms to 10ms 10261(1000 cycles of 10us) to try to address AE_TIME errors during EC 10262transactions. 10263 10264 ---------------------------------------- 10265Summary of changes for this label: 11_02_01 10266 102671) ACPI CA Core Subsystem: 10268 10269ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 10270(QWordAcc keyword). All ACPI 2.0 64-bit support is now 10271implemented. 10272 10273OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 10274changes to support ACPI 2.0 Qword field access. Read/Write 10275PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 10276accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 10277the value parameter for the address space handler interface is now 10278an ACPI_INTEGER. OSL implementations of these interfaces must now 10279handle the case where the Width parameter is 64. 10280 10281Index Fields: Fixed a problem where unaligned bit assembly and 10282disassembly for IndexFields was not supported correctly. 10283 10284Index and Bank Fields: Nested Index and Bank Fields are now 10285supported. During field access, a check is performed to ensure 10286that the value written to an Index or Bank register is not out of 10287the range of the register. The Index (or Bank) register is 10288written before each access to the field data. Future support will 10289include allowing individual IndexFields to be wider than the 10290DataRegister width. 10291 10292Fields: Fixed a problem where the AML interpreter was incorrectly 10293attempting to write beyond the end of a Field/OpRegion. This was 10294a boundary case that occurred when a DWORD field was written to a 10295BYTE access OpRegion, forcing multiple writes and causing the 10296interpreter to write one datum too many. 10297 10298Fields: Fixed a problem with Field/OpRegion access where the 10299starting bit address of a field was incorrectly calculated if the 10300current access type was wider than a byte (WordAcc, DwordAcc, or 10301QwordAcc). 10302 10303Fields: Fixed a problem where forward references to individual 10304FieldUnits (individual Field names within a Field definition) were 10305not resolved during the AML table load. 10306 10307Fields: Fixed a problem where forward references from a Field 10308definition to the parent Operation Region definition were not 10309resolved during the AML table load. 10310 10311Fields: Duplicate FieldUnit names within a scope are now detected 10312during AML table load. 10313 10314Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 10315returned an incorrect name for the root node. 10316 10317Code and Data Size: Code and Data optimizations have permitted new 10318feature development with an actual reduction in the library size. 10319Current core subsystem library sizes are shown below. These are 10320the code and data sizes for the acpica.lib produced by the 10321Microsoft Visual C++ 6.0 compiler, and these values do not include 10322any ACPI driver or OSPM code. The debug version of the code 10323includes the debug output trace mechanism and has a larger code 10324and data size. Note that these values will vary depending on the 10325efficiency of the compiler and the compiler options used during 10326generation. 10327 10328 Previous Release (10_18_01): 10329 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 10330 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 10331 10332 Current Release: 10333 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 10334 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 10335 10336 2) Linux: 10337 10338Improved /proc processor output (Pavel Machek) Re-added 10339MODULE_LICENSE("GPL") to all modules. 10340 10341 3) ASL Compiler version X2030: 10342 10343Duplicate FieldUnit names within a scope are now detected and 10344flagged as errors. 10345 10346 4) Documentation: 10347 10348Programmer Reference updated to reflect OSL and address space 10349handler interface changes described above. 10350 10351---------------------------------------- 10352Summary of changes for this label: 10_18_01 10353 10354ACPI CA Core Subsystem: 10355 10356Fixed a problem with the internal object reference count mechanism 10357that occasionally caused premature object deletion. This resolves 10358all of the outstanding problem reports where an object is deleted 10359in the middle of an interpreter evaluation. Although this problem 10360only showed up in rather obscure cases, the solution to the 10361problem involved an adjustment of all reference counts involving 10362objects attached to namespace nodes. 10363 10364Fixed a problem with Field support in the interpreter where 10365writing to an aligned field whose length is an exact multiple (2 10366or greater) of the field access granularity would cause an attempt 10367to write beyond the end of the field. 10368 10369The top level AML opcode execution functions within the 10370interpreter have been renamed with a more meaningful and 10371consistent naming convention. The modules exmonad.c and 10372exdyadic.c were eliminated. New modules are exoparg1.c, 10373exoparg2.c, exoparg3.c, and exoparg6.c. 10374 10375Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 10376 10377Fixed a problem where the AML debugger was causing some internal 10378objects to not be deleted during subsystem termination. 10379 10380Fixed a problem with the external AcpiEvaluateObject interface 10381where the subsystem would fault if the named object to be 10382evaluated refered to a constant such as Zero, Ones, etc. 10383 10384Fixed a problem with IndexFields and BankFields where the 10385subsystem would fault if the index, data, or bank registers were 10386not defined in the same scope as the field itself. 10387 10388Added printf format string checking for compilers that support 10389this feature. Corrected more than 50 instances of issues with 10390format specifiers within invocations of ACPI_DEBUG_PRINT 10391throughout the core subsystem code. 10392 10393The ASL "Revision" operator now returns the ACPI support level 10394implemented in the core - the value "2" since the ACPI 2.0 support 10395is more than 50% implemented. 10396 10397Enhanced the output of the AML debugger "dump namespace" command 10398to output in a more human-readable form. 10399 10400Current core subsystem library code sizes are shown below. These 10401 10402are the code and data sizes for the acpica.lib produced by the 10403Microsoft Visual C++ 6.0 compiler, and these values do not include 10404any ACPI driver or OSPM code. The debug version of the code 10405includes the full debug trace mechanism -- leading to a much 10406 10407larger code and data size. Note that these values will vary 10408depending on the efficiency of the compiler and the compiler 10409options used during generation. 10410 10411 Previous Label (09_20_01): 10412 Non-Debug Version: 65K Code, 5K Data, 70K Total 10413 Debug Version: 138K Code, 58K Data, 196K Total 10414 10415 This Label: 10416 10417 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 10418 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 10419 10420Linux: 10421 10422Implemented a "Bad BIOS Blacklist" to track machines that have 10423known ASL/AML problems. 10424 10425Enhanced the /proc interface for the thermal zone driver and added 10426support for _HOT (the critical suspend trip point). The 'info' 10427file now includes threshold/policy information, and allows setting 10428of _SCP (cooling preference) and _TZP (polling frequency) values 10429to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 10430frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 10431preference to the passive/quiet mode (if supported by the ASL). 10432 10433Implemented a workaround for a gcc bug that resuted in an OOPs 10434when loading the control method battery driver. 10435 10436 ---------------------------------------- 10437Summary of changes for this label: 09_20_01 10438 10439 ACPI CA Core Subsystem: 10440 10441The AcpiEnableEvent and AcpiDisableEvent interfaces have been 10442modified to allow individual GPE levels to be flagged as wake- 10443enabled (i.e., these GPEs are to remain enabled when the platform 10444sleeps.) 10445 10446The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 10447support wake-enabled GPEs. This means that upon entering the 10448sleep state, all GPEs that are not wake-enabled are disabled. 10449When leaving the sleep state, these GPEs are reenabled. 10450 10451A local double-precision divide/modulo module has been added to 10452enhance portability to OS kernels where a 64-bit math library is 10453not available. The new module is "utmath.c". 10454 10455Several optimizations have been made to reduce the use of CPU 10456stack. Originally over 2K, the maximum stack usage is now below 104572K at 1860 bytes (1.82k) 10458 10459Fixed a problem with the AcpiGetFirmwareTable interface where the 10460root table pointer was not mapped into a logical address properly. 10461 10462Fixed a problem where a NULL pointer was being dereferenced in the 10463interpreter code for the ASL Notify operator. 10464 10465Fixed a problem where the use of the ASL Revision operator 10466returned an error. This operator now returns the current version 10467of the ACPI CA core subsystem. 10468 10469Fixed a problem where objects passed as control method parameters 10470to AcpiEvaluateObject were always deleted at method termination. 10471However, these objects may end up being stored into the namespace 10472by the called method. The object reference count mechanism was 10473applied to these objects instead of a force delete. 10474 10475Fixed a problem where static strings or buffers (contained in the 10476AML code) that are declared as package elements within the ASL 10477code could cause a fault because the interpreter would attempt to 10478delete them. These objects are now marked with the "static 10479object" flag to prevent any attempt to delete them. 10480 10481Implemented an interpreter optimization to use operands directly 10482from the state object instead of extracting the operands to local 10483variables. This reduces stack use and code size, and improves 10484performance. 10485 10486The module exxface.c was eliminated as it was an unnecessary extra 10487layer of code. 10488 10489Current core subsystem library code sizes are shown below. These 10490are the code and data sizes for the acpica.lib produced by the 10491Microsoft Visual C++ 6.0 compiler, and these values do not include 10492any ACPI driver or OSPM code. The debug version of the code 10493includes the full debug trace mechanism -- leading to a much 10494larger code and data size. Note that these values will vary 10495depending on the efficiency of the compiler and the compiler 10496options used during generation. 10497 10498 Non-Debug Version: 65K Code, 5K Data, 70K Total 10499(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 10500Total (Previously 195K) 10501 10502Linux: 10503 10504Support for ACPI 2.0 64-bit integers has been added. All ACPI 10505Integer objects are now 64 bits wide 10506 10507All Acpi data types and structures are now in lower case. Only 10508Acpi macros are upper case for differentiation. 10509 10510 Documentation: 10511 10512Changes to the external interfaces as described above. 10513 10514 ---------------------------------------- 10515Summary of changes for this label: 08_31_01 10516 10517 ACPI CA Core Subsystem: 10518 10519A bug with interpreter implementation of the ASL Divide operator 10520was found and fixed. The implicit function return value (not the 10521explicit store operands) was returning the remainder instead of 10522the quotient. This was a longstanding bug and it fixes several 10523known outstanding issues on various platforms. 10524 10525The ACPI_DEBUG_PRINT and function trace entry/exit macros have 10526been further optimized for size. There are 700 invocations of the 10527DEBUG_PRINT macro alone, so each optimization reduces the size of 10528the debug version of the subsystem significantly. 10529 10530A stack trace mechanism has been implemented. The maximum stack 10531usage is about 2K on 32-bit platforms. The debugger command "stat 10532stack" will display the current maximum stack usage. 10533 10534All public symbols and global variables within the subsystem are 10535now prefixed with the string "Acpi". This keeps all of the 10536symbols grouped together in a kernel map, and avoids conflicts 10537with other kernel subsystems. 10538 10539Most of the internal fixed lookup tables have been moved into the 10540code segment via the const operator. 10541 10542Several enhancements have been made to the interpreter to both 10543reduce the code size and improve performance. 10544 10545Current core subsystem library code sizes are shown below. These 10546are the code and data sizes for the acpica.lib produced by the 10547Microsoft Visual C++ 6.0 compiler, and these values do not include 10548any ACPI driver or OSPM code. The debug version of the code 10549includes the full debug trace mechanism which contains over 700 10550invocations of the DEBUG_PRINT macro, 500 function entry macro 10551invocations, and over 900 function exit macro invocations -- 10552leading to a much larger code and data size. Note that these 10553values will vary depending on the efficiency of the compiler and 10554the compiler options used during generation. 10555 10556 Non-Debug Version: 64K Code, 5K Data, 69K Total 10557Debug Version: 137K Code, 58K Data, 195K Total 10558 10559 Linux: 10560 10561Implemented wbinvd() macro, pending a kernel-wide definition. 10562 10563Fixed /proc/acpi/event to handle poll() and short reads. 10564 10565 ASL Compiler, version X2026: 10566 10567Fixed a problem introduced in the previous label where the AML 10568 10569code emitted for package objects produced packages with zero 10570length. 10571 10572 ---------------------------------------- 10573Summary of changes for this label: 08_16_01 10574 10575ACPI CA Core Subsystem: 10576 10577The following ACPI 2.0 ASL operators have been implemented in the 10578AML interpreter (These are already supported by the Intel ASL 10579compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 10580ToBuffer. Support for 64-bit AML constants is implemented in the 10581AML parser, debugger, and disassembler. 10582 10583The internal memory tracking mechanism (leak detection code) has 10584been upgraded to reduce the memory overhead (a separate tracking 10585block is no longer allocated for each memory allocation), and now 10586supports all of the internal object caches. 10587 10588The data structures and code for the internal object caches have 10589been coelesced and optimized so that there is a single cache and 10590memory list data structure and a single group of functions that 10591implement generic cache management. This has reduced the code 10592size in both the debug and release versions of the subsystem. 10593 10594The DEBUG_PRINT macro(s) have been optimized for size and replaced 10595by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 10596different, because it generates a single call to an internal 10597function. This results in a savings of about 90 bytes per 10598invocation, resulting in an overall code and data savings of about 1059916% in the debug version of the subsystem. 10600 10601 Linux: 10602 10603Fixed C3 disk corruption problems and re-enabled C3 on supporting 10604machines. 10605 10606Integrated low-level sleep code by Patrick Mochel. 10607 10608Further tweaked source code Linuxization. 10609 10610Other minor fixes. 10611 10612 ASL Compiler: 10613 10614Support for ACPI 2.0 variable length packages is fixed/completed. 10615 10616Fixed a problem where the optional length parameter for the ACPI 106172.0 ToString operator. 10618 10619Fixed multiple extraneous error messages when a syntax error is 10620detected within the declaration line of a control method. 10621 10622 ---------------------------------------- 10623Summary of changes for this label: 07_17_01 10624 10625ACPI CA Core Subsystem: 10626 10627Added a new interface named AcpiGetFirmwareTable to obtain any 10628ACPI table via the ACPI signature. The interface can be called at 10629any time during kernel initialization, even before the kernel 10630virtual memory manager is initialized and paging is enabled. This 10631allows kernel subsystems to obtain ACPI tables very early, even 10632before the ACPI CA subsystem is initialized. 10633 10634Fixed a problem where Fields defined with the AnyAcc attribute 10635could be resolved to the incorrect address under the following 10636conditions: 1) the field width is larger than 8 bits and 2) the 10637parent operation region is not defined on a DWORD boundary. 10638 10639Fixed a problem where the interpreter is not being locked during 10640namespace initialization (during execution of the _INI control 10641methods), causing an error when an attempt is made to release it 10642later. 10643 10644ACPI 2.0 support in the AML Interpreter has begun and will be 10645ongoing throughout the rest of this year. In this label, The Mod 10646operator is implemented. 10647 10648Added a new data type to contain full PCI addresses named 10649ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 10650and Function values. 10651 10652 Linux: 10653 10654Enhanced the Linux version of the source code to change most 10655capitalized ACPI type names to lowercase. For example, all 10656instances of ACPI_STATUS are changed to acpi_status. This will 10657result in a large diff, but the change is strictly cosmetic and 10658aligns the CA code closer to the Linux coding standard. 10659 10660OSL Interfaces: 10661 10662The interfaces to the PCI configuration space have been changed to 10663add the PCI Segment number and to split the single 32-bit combined 10664DeviceFunction field into two 16-bit fields. This was 10665accomplished by moving the four values that define an address in 10666PCI configuration space (segment, bus, device, and function) to 10667the new ACPI_PCI_ID structure. 10668 10669The changes to the PCI configuration space interfaces led to a 10670reexamination of the complete set of address space access 10671interfaces for PCI, I/O, and Memory. The previously existing 18 10672interfaces have proven difficult to maintain (any small change 10673must be propagated across at least 6 interfaces) and do not easily 10674allow for future expansion to 64 bits if necessary. Also, on some 10675systems, it would not be appropriate to demultiplex the access 10676width (8, 16, 32,or 64) before calling the OSL if the 10677corresponding native OS interfaces contain a similar access width 10678parameter. For these reasons, the 18 address space interfaces 10679have been replaced by these 6 new ones: 10680 10681AcpiOsReadPciConfiguration 10682AcpiOsWritePciConfiguration 10683AcpiOsReadMemory 10684AcpiOsWriteMemory 10685AcpiOsReadPort 10686AcpiOsWritePort 10687 10688Added a new interface named AcpiOsGetRootPointer to allow the OSL 10689to perform the platform and/or OS-specific actions necessary to 10690obtain the ACPI RSDP table pointer. On IA-32 platforms, this 10691interface will simply call down to the CA core to perform the low- 10692memory search for the table. On IA-64, the RSDP is obtained from 10693EFI. Migrating this interface to the OSL allows the CA core to 10694 10695remain OS and platform independent. 10696 10697Added a new interface named AcpiOsSignal to provide a generic 10698"function code and pointer" interface for various miscellaneous 10699signals and notifications that must be made to the host OS. The 10700first such signals are intended to support the ASL Fatal and 10701Breakpoint operators. In the latter case, the AcpiOsBreakpoint 10702interface has been obsoleted. 10703 10704The definition of the AcpiFormatException interface has been 10705changed to simplify its use. The caller no longer must supply a 10706buffer to the call; A pointer to a const string is now returned 10707directly. This allows the call to be easily used in printf 10708statements, etc. since the caller does not have to manage a local 10709buffer. 10710 10711 10712 ASL Compiler, Version X2025: 10713 10714The ACPI 2.0 Switch/Case/Default operators have been implemented 10715and are fully functional. They will work with all ACPI 1.0 10716interpreters, since the operators are simply translated to If/Else 10717pairs. 10718 10719The ACPI 2.0 ElseIf operator is implemented and will also work 10720with 1.0 interpreters, for the same reason. 10721 10722Implemented support for ACPI 2.0 variable-length packages. These 10723packages have a separate opcode, and their size is determined by 10724the interpreter at run-time. 10725 10726Documentation The ACPI CA Programmer Reference has been updated to 10727reflect the new interfaces and changes to existing interfaces. 10728 10729 ------------------------------------------ 10730Summary of changes for this label: 06_15_01 10731 10732 ACPI CA Core Subsystem: 10733 10734Fixed a problem where a DWORD-accessed field within a Buffer 10735object would get its byte address inadvertently rounded down to 10736the nearest DWORD. Buffers are always Byte-accessible. 10737 10738 ASL Compiler, version X2024: 10739 10740Fixed a problem where the Switch() operator would either fault or 10741hang the compiler. Note however, that the AML code for this ACPI 107422.0 operator is not yet implemented. 10743 10744Compiler uses the new AcpiOsGetTimer interface to obtain compile 10745timings. 10746 10747Implementation of the CreateField operator automatically converts 10748a reference to a named field within a resource descriptor from a 10749byte offset to a bit offset if required. 10750 10751Added some missing named fields from the resource descriptor 10752support. These are the names that are automatically created by the 10753compiler to reference fields within a descriptor. They are only 10754valid at compile time and are not passed through to the AML 10755interpreter. 10756 10757Resource descriptor named fields are now typed as Integers and 10758subject to compile-time typechecking when used in expressions. 10759 10760 ------------------------------------------ 10761Summary of changes for this label: 05_18_01 10762 10763 ACPI CA Core Subsystem: 10764 10765Fixed a couple of problems in the Field support code where bits 10766from adjacent fields could be returned along with the proper field 10767bits. Restructured the field support code to improve performance, 10768readability and maintainability. 10769 10770New DEBUG_PRINTP macro automatically inserts the procedure name 10771into the output, saving hundreds of copies of procedure name 10772strings within the source, shrinking the memory footprint of the 10773debug version of the core subsystem. 10774 10775 Source Code Structure: 10776 10777The source code directory tree was restructured to reflect the 10778current organization of the component architecture. Some files 10779and directories have been moved and/or renamed. 10780 10781 Linux: 10782 10783Fixed leaking kacpidpc processes. 10784 10785Fixed queueing event data even when /proc/acpi/event is not 10786opened. 10787 10788 ASL Compiler, version X2020: 10789 10790Memory allocation performance enhancement - over 24X compile time 10791improvement on large ASL files. Parse nodes and namestring 10792buffers are now allocated from a large internal compiler buffer. 10793 10794The temporary .SRC file is deleted unless the "-s" option is 10795specified 10796 10797The "-d" debug output option now sends all output to the .DBG file 10798instead of the console. 10799 10800"External" second parameter is now optional 10801 10802"ElseIf" syntax now properly allows the predicate 10803 10804Last operand to "Load" now recognized as a Target operand 10805 10806Debug object can now be used anywhere as a normal object. 10807 10808ResourceTemplate now returns an object of type BUFFER 10809 10810EISAID now returns an object of type INTEGER 10811 10812"Index" now works with a STRING operand 10813 10814"LoadTable" now accepts optional parameters 10815 10816"ToString" length parameter is now optional 10817 10818"Interrupt (ResourceType," parse error fixed. 10819 10820"Register" with a user-defined region space parse error fixed 10821 10822Escaped backslash at the end of a string ("\\") scan/parse error 10823fixed 10824 10825"Revision" is now an object of type INTEGER. 10826 10827 10828 10829------------------------------------------ 10830Summary of changes for this label: 05_02_01 10831 10832Linux: 10833 10834/proc/acpi/event now blocks properly. 10835 10836Removed /proc/sys/acpi. You can still dump your DSDT from 10837/proc/acpi/dsdt. 10838 10839 ACPI CA Core Subsystem: 10840 10841Fixed a problem introduced in the previous label where some of the 10842"small" resource descriptor types were not recognized. 10843 10844Improved error messages for the case where an ASL Field is outside 10845the range of the parent operation region. 10846 10847 ASL Compiler, version X2018: 10848 10849 10850Added error detection for ASL Fields that extend beyond the length 10851of the parent operation region (only if the length of the region 10852is known at compile time.) This includes fields that have a 10853minimum access width that is smaller than the parent region, and 10854individual field units that are partially or entirely beyond the 10855extent of the parent. 10856 10857 10858 10859------------------------------------------ 10860Summary of changes for this label: 04_27_01 10861 10862 ACPI CA Core Subsystem: 10863 10864Fixed a problem where the namespace mutex could be released at the 10865wrong time during execution of AcpiRemoveAddressSpaceHandler. 10866 10867Added optional thread ID output for debug traces, to simplify 10868debugging of multiple threads. Added context switch notification 10869when the debug code realizes that a different thread is now 10870executing ACPI code. 10871 10872Some additional external data types have been prefixed with the 10873string "ACPI_" for consistency. This may effect existing code. 10874The data types affected are the external callback typedefs - e.g., 10875 10876WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 10877 10878 Linux: 10879 10880Fixed an issue with the OSL semaphore implementation where a 10881thread was waking up with an error from receiving a SIGCHLD 10882signal. 10883 10884Linux version of ACPI CA now uses the system C library for string 10885manipulation routines instead of a local implementation. 10886 10887Cleaned up comments and removed TBDs. 10888 10889 ASL Compiler, version X2017: 10890 10891Enhanced error detection and reporting for all file I/O 10892operations. 10893 10894 Documentation: 10895 10896Programmer Reference updated to version 1.06. 10897 10898 10899 10900------------------------------------------ 10901Summary of changes for this label: 04_13_01 10902 10903 ACPI CA Core Subsystem: 10904 10905Restructured support for BufferFields and RegionFields. 10906BankFields support is now fully operational. All known 32-bit 10907limitations on field sizes have been removed. Both BufferFields 10908and (Operation) RegionFields are now supported by the same field 10909management code. 10910 10911Resource support now supports QWORD address and IO resources. The 1091216/32/64 bit address structures and the Extended IRQ structure 10913have been changed to properly handle Source Resource strings. 10914 10915A ThreadId of -1 is now used to indicate a "mutex not acquired" 10916condition internally and must never be returned by AcpiOsThreadId. 10917This reserved value was changed from 0 since Unix systems allow a 10918thread ID of 0. 10919 10920Linux: 10921 10922Driver code reorganized to enhance portability 10923 10924Added a kernel configuration option to control ACPI_DEBUG 10925 10926Fixed the EC driver to honor _GLK. 10927 10928ASL Compiler, version X2016: 10929 10930Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10931address space was set to 0, not 0x7f as it should be. 10932 10933 ------------------------------------------ 10934Summary of changes for this label: 03_13_01 10935 10936 ACPI CA Core Subsystem: 10937 10938During ACPI initialization, the _SB_._INI method is now run if 10939present. 10940 10941Notify handler fix - notifies are deferred until the parent method 10942completes execution. This fixes the "mutex already acquired" 10943issue seen occasionally. 10944 10945Part of the "implicit conversion" rules in ACPI 2.0 have been 10946found to cause compatibility problems with existing ASL/AML. The 10947convert "result-to-target-type" implementation has been removed 10948for stores to method Args and Locals. Source operand conversion 10949is still fully implemented. Possible changes to ACPI 2.0 10950specification pending. 10951 10952Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10953length. 10954 10955Fix for compiler warnings for 64-bit compiles. 10956 10957 Linux: 10958 10959/proc output aligned for easier parsing. 10960 10961Release-version compile problem fixed. 10962 10963New kernel configuration options documented in Configure.help. 10964 10965IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10966context" message. 10967 10968 OSPM: 10969 10970Power resource driver integrated with bus manager. 10971 10972Fixed kernel fault during active cooling for thermal zones. 10973 10974Source Code: 10975 10976The source code tree has been restructured. 10977 10978 10979 10980------------------------------------------ 10981Summary of changes for this label: 03_02_01 10982 10983 Linux OS Services Layer (OSL): 10984 10985Major revision of all Linux-specific code. 10986 10987Modularized all ACPI-specific drivers. 10988 10989Added new thermal zone and power resource drivers. 10990 10991Revamped /proc interface (new functionality is under /proc/acpi). 10992 10993New kernel configuration options. 10994 10995 Linux known issues: 10996 10997New kernel configuration options not documented in Configure.help 10998yet. 10999 11000 11001Module dependencies not currently implemented. If used, they 11002should be loaded in this order: busmgr, power, ec, system, 11003processor, battery, ac_adapter, button, thermal. 11004 11005Modules will not load if CONFIG_MODVERSION is set. 11006 11007IBM 600E - entering S5 may reboot instead of shutting down. 11008 11009IBM 600E - Sleep button may generate "Invalid <NULL> context" 11010message. 11011 11012Some systems may fail with "execution mutex already acquired" 11013message. 11014 11015 ACPI CA Core Subsystem: 11016 11017Added a new OSL Interface, AcpiOsGetThreadId. This was required 11018for the deadlock detection code. Defined to return a non-zero, 32- 11019bit thread ID for the currently executing thread. May be a non- 11020zero constant integer on single-thread systems. 11021 11022Implemented deadlock detection for internal subsystem mutexes. We 11023may add conditional compilation for this code (debug only) later. 11024 11025ASL/AML Mutex object semantics are now fully supported. This 11026includes multiple acquires/releases by owner and support for the 11027 11028Mutex SyncLevel parameter. 11029 11030A new "Force Release" mechanism automatically frees all ASL 11031Mutexes that have been acquired but not released when a thread 11032exits the interpreter. This forces conformance to the ACPI spec 11033("All mutexes must be released when an invocation exits") and 11034prevents deadlocked ASL threads. This mechanism can be expanded 11035(later) to monitor other resource acquisitions if OEM ASL code 11036continues to misbehave (which it will). 11037 11038Several new ACPI exception codes have been added for the Mutex 11039support. 11040 11041Recursive method calls are now allowed and supported (the ACPI 11042spec does in fact allow recursive method calls.) The number of 11043recursive calls is subject to the restrictions imposed by the 11044SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 11045parameter. 11046 11047Implemented support for the SyncLevel parameter for control 11048methods (ACPI 2.0 feature) 11049 11050Fixed a deadlock problem when multiple threads attempted to use 11051the interpreter. 11052 11053Fixed a problem where the string length of a String package 11054element was not always set in a package returned from 11055AcpiEvaluateObject. 11056 11057Fixed a problem where the length of a String package element was 11058not always included in the length of the overall package returned 11059from AcpiEvaluateObject. 11060 11061Added external interfaces (Acpi*) to the ACPI debug memory 11062manager. This manager keeps a list of all outstanding 11063allocations, and can therefore detect memory leaks and attempts to 11064free memory blocks more than once. Useful for code such as the 11065power manager, etc. May not be appropriate for device drivers. 11066Performance with the debug code enabled is slow. 11067 11068The ACPI Global Lock is now an optional hardware element. 11069 11070 ASL Compiler Version X2015: 11071 11072Integrated changes to allow the compiler to be generated on 11073multiple platforms. 11074 11075Linux makefile added to generate the compiler on Linux 11076 11077 Source Code: 11078 11079All platform-specific headers have been moved to their own 11080subdirectory, Include/Platform. 11081 11082New source file added, Interpreter/ammutex.c 11083 11084New header file, Include/acstruct.h 11085 11086 Documentation: 11087 11088The programmer reference has been updated for the following new 11089interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 11090 11091 ------------------------------------------ 11092Summary of changes for this label: 02_08_01 11093 11094Core ACPI CA Subsystem: Fixed a problem where an error was 11095incorrectly returned if the return resource buffer was larger than 11096the actual data (in the resource interfaces). 11097 11098References to named objects within packages are resolved to the 11099 11100full pathname string before packages are returned directly (via 11101the AcpiEvaluateObject interface) or indirectly via the resource 11102interfaces. 11103 11104Linux OS Services Layer (OSL): 11105 11106Improved /proc battery interface. 11107 11108 11109Added C-state debugging output and other miscellaneous fixes. 11110 11111ASL Compiler Version X2014: 11112 11113All defined method arguments can now be used as local variables, 11114including the ones that are not actually passed in as parameters. 11115The compiler tracks initialization of the arguments and issues an 11116exception if they are used without prior assignment (just like 11117locals). 11118 11119The -o option now specifies a filename prefix that is used for all 11120output files, including the AML output file. Otherwise, the 11121default behavior is as follows: 1) the AML goes to the file 11122specified in the DSDT. 2) all other output files use the input 11123source filename as the base. 11124 11125 ------------------------------------------ 11126Summary of changes for this label: 01_25_01 11127 11128Core ACPI CA Subsystem: Restructured the implementation of object 11129store support within the interpreter. This includes support for 11130the Store operator as well as any ASL operators that include a 11131target operand. 11132 11133Partially implemented support for Implicit Result-to-Target 11134conversion. This is when a result object is converted on the fly 11135to the type of an existing target object. Completion of this 11136support is pending further analysis of the ACPI specification 11137concerning this matter. 11138 11139CPU-specific code has been removed from the subsystem (hardware 11140directory). 11141 11142New Power Management Timer functions added 11143 11144Linux OS Services Layer (OSL): Moved system state transition code 11145to the core, fixed it, and modified Linux OSL accordingly. 11146 11147Fixed C2 and C3 latency calculations. 11148 11149 11150We no longer use the compilation date for the version message on 11151initialization, but retrieve the version from AcpiGetSystemInfo(). 11152 11153Incorporated for fix Sony VAIO machines. 11154 11155Documentation: The Programmer Reference has been updated and 11156reformatted. 11157 11158 11159ASL Compiler: Version X2013: Fixed a problem where the line 11160numbering and error reporting could get out of sync in the 11161presence of multiple include files. 11162 11163 ------------------------------------------ 11164Summary of changes for this label: 01_15_01 11165 11166Core ACPI CA Subsystem: 11167 11168Implemented support for type conversions in the execution of the 11169ASL Concatenate operator (The second operand is converted to 11170match the type of the first operand before concatenation.) 11171 11172Support for implicit source operand conversion is partially 11173implemented. The ASL source operand types Integer, Buffer, and 11174String are freely interchangeable for most ASL operators and are 11175converted by the interpreter on the fly as required. Implicit 11176Target operand conversion (where the result is converted to the 11177target type before storing) is not yet implemented. 11178 11179Support for 32-bit and 64-bit BCD integers is implemented. 11180 11181Problem fixed where a field read on an aligned field could cause a 11182read past the end of the field. 11183 11184New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 11185does not return a value, but the caller expects one. (The ASL 11186compiler flags this as a warning.) 11187 11188ASL Compiler: 11189 11190Version X2011: 111911. Static typechecking of all operands is implemented. This 11192prevents the use of invalid objects (such as using a Package where 11193an Integer is required) at compile time instead of at interpreter 11194run-time. 111952. The ASL source line is printed with ALL errors and warnings. 111963. Bug fix for source EOF without final linefeed. 111974. Debug option is split into a parse trace and a namespace trace. 111985. Namespace output option (-n) includes initial values for 11199integers and strings. 112006. Parse-only option added for quick syntax checking. 112017. Compiler checks for duplicate ACPI name declarations 11202 11203Version X2012: 112041. Relaxed typechecking to allow interchangeability between 11205strings, integers, and buffers. These types are now converted by 11206the interpreter at runtime. 112072. Compiler reports time taken by each internal subsystem in the 11208debug output file. 11209 11210 11211 ------------------------------------------ 11212Summary of changes for this label: 12_14_00 11213 11214ASL Compiler: 11215 11216This is the first official release of the compiler. Since the 11217compiler requires elements of the Core Subsystem, this label 11218synchronizes everything. 11219 11220------------------------------------------ 11221Summary of changes for this label: 12_08_00 11222 11223 11224Fixed a problem where named references within the ASL definition 11225of both OperationRegions and CreateXXXFields did not work 11226properly. The symptom was an AE_AML_OPERAND_TYPE during 11227initialization of the region/field. This is similar (but not 11228related internally) to the problem that was fixed in the last 11229label. 11230 11231Implemented both 32-bit and 64-bit support for the BCD ASL 11232functions ToBCD and FromBCD. 11233 11234Updated all legal headers to include "2000" in the copyright 11235years. 11236 11237 ------------------------------------------ 11238Summary of changes for this label: 12_01_00 11239 11240Fixed a problem where method invocations within the ASL definition 11241of both OperationRegions and CreateXXXFields did not work 11242properly. The symptom was an AE_AML_OPERAND_TYPE during 11243initialization of the region/field: 11244 11245 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 11246[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 11247(0x3005) 11248 11249Fixed a problem where operators with more than one nested 11250subexpression would fail. The symptoms were varied, by mostly 11251AE_AML_OPERAND_TYPE errors. This was actually a rather serious 11252problem that has gone unnoticed until now. 11253 11254 Subtract (Add (1,2), Multiply (3,4)) 11255 11256Fixed a problem where AcpiGetHandle didn't quite get fixed in the 11257previous build (The prefix part of a relative path was handled 11258incorrectly). 11259 11260Fixed a problem where Operation Region initialization failed if 11261the operation region name was a "namepath" instead of a simple 11262"nameseg". Symptom was an AE_NO_OPERAND error. 11263 11264Fixed a problem where an assignment to a local variable via the 11265indirect RefOf mechanism only worked for the first such 11266assignment. Subsequent assignments were ignored. 11267 11268 ------------------------------------------ 11269Summary of changes for this label: 11_15_00 11270 11271ACPI 2.0 table support with backwards support for ACPI 1.0 and the 112720.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 11273the AML interpreter does NOT have support for the new 2.0 ASL 11274grammar terms at this time. 11275 11276All ACPI hardware access is via the GAS structures in the ACPI 2.0 11277FADT. 11278 11279All physical memory addresses across all platforms are now 64 bits 11280wide. Logical address width remains dependent on the platform 11281(i.e., "void *"). 11282 11283AcpiOsMapMemory interface changed to a 64-bit physical address. 11284 11285The AML interpreter integer size is now 64 bits, as per the ACPI 112862.0 specification. 11287 11288For backwards compatibility with ACPI 1.0, ACPI tables with a 11289revision number less than 2 use 32-bit integers only. 11290 11291Fixed a problem where the evaluation of OpRegion operands did not 11292always resolve them to numbers properly. 11293 11294------------------------------------------ 11295Summary of changes for this label: 10_20_00 11296 11297Fix for CBN_._STA issue. This fix will allow correct access to 11298CBN_ OpRegions when the _STA returns 0x8. 11299 11300Support to convert ACPI constants (Ones, Zeros, One) to actual 11301values before a package object is returned 11302 11303Fix for method call as predicate to if/while construct causing 11304incorrect if/while behavior 11305 11306Fix for Else block package lengths sometimes calculated wrong (if 11307block > 63 bytes) 11308 11309Fix for Processor object length field, was always zero 11310 11311Table load abort if FACP sanity check fails 11312 11313Fix for problem with Scope(name) if name already exists 11314 11315Warning emitted if a named object referenced cannot be found 11316(resolved) during method execution. 11317 11318 11319 11320 11321 11322------------------------------------------ 11323Summary of changes for this label: 9_29_00 11324 11325New table initialization interfaces: AcpiInitializeSubsystem no 11326longer has any parameters AcpiFindRootPointer - Find the RSDP (if 11327necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 11328>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 11329AcpiLoadTables 11330 11331Note: These interface changes require changes to all existing OSDs 11332 11333The PCI_Config default address space handler is always installed 11334at the root namespace object. 11335 11336------------------------------------------- 11337Summary of changes for this label: 09_15_00 11338 11339The new initialization architecture is implemented. New 11340interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 11341AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 11342 11343(Namespace is automatically loaded when a table is loaded) 11344 11345The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1134652 bytes to 32 bytes. There is usually one of these for every 11347namespace object, so the memory savings is significant. 11348 11349Implemented just-in-time evaluation of the CreateField operators. 11350 11351Bug fixes for IA-64 support have been integrated. 11352 11353Additional code review comments have been implemented 11354 11355The so-called "third pass parse" has been replaced by a final walk 11356through the namespace to initialize all operation regions (address 11357spaces) and fields that have not yet been initialized during the 11358execution of the various _INI and REG methods. 11359 11360New file - namespace/nsinit.c 11361 11362------------------------------------------- 11363Summary of changes for this label: 09_01_00 11364 11365Namespace manager data structures have been reworked to change the 11366primary object from a table to a single object. This has 11367resulted in dynamic memory savings of 3X within the namespace and 113682X overall in the ACPI CA subsystem. 11369 11370Fixed problem where the call to AcpiEvFindPciRootBuses was 11371inadvertently left commented out. 11372 11373Reduced the warning count when generating the source with the GCC 11374compiler. 11375 11376Revision numbers added to each module header showing the 11377SourceSafe version of the file. Please refer to this version 11378number when giving us feedback or comments on individual modules. 11379 11380The main object types within the subsystem have been renamed to 11381clarify their purpose: 11382 11383ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 11384ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 11385ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 11386 11387NOTE: no changes to the initialization sequence are included in 11388this label. 11389 11390------------------------------------------- 11391Summary of changes for this label: 08_23_00 11392 11393Fixed problem where TerminateControlMethod was being called 11394multiple times per method 11395 11396Fixed debugger problem where single stepping caused a semaphore to 11397be oversignalled 11398 11399Improved performance through additional parse object caching - 11400added ACPI_EXTENDED_OP type 11401 11402------------------------------------------- 11403Summary of changes for this label: 08_10_00 11404 11405Parser/Interpreter integration: Eliminated the creation of 11406complete parse trees for ACPI tables and control methods. 11407Instead, parse subtrees are created and then deleted as soon as 11408they are processed (Either entered into the namespace or executed 11409by the interpreter). This reduces the use of dynamic kernel 11410memory significantly. (about 10X) 11411 11412Exception codes broken into classes and renumbered. Be sure to 11413recompile all code that includes acexcep.h. Hopefully we won't 11414have to renumber the codes again now that they are split into 11415classes (environment, programmer, AML code, ACPI table, and 11416internal). 11417 11418Fixed some additional alignment issues in the Resource Manager 11419subcomponent 11420 11421Implemented semaphore tracking in the AcpiExec utility, and fixed 11422several places where mutexes/semaphores were being unlocked 11423without a corresponding lock operation. There are no known 11424semaphore or mutex "leaks" at this time. 11425 11426Fixed the case where an ASL Return operator is used to return an 11427unnamed package. 11428 11429------------------------------------------- 11430Summary of changes for this label: 07_28_00 11431 11432Fixed a problem with the way addresses were calculated in 11433AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 11434manifested itself when a Field was created with WordAccess or 11435DwordAccess, but the field unit defined within the Field was less 11436 11437than a Word or Dword. 11438 11439Fixed a problem in AmlDumpOperands() module's loop to pull 11440operands off of the operand stack to display information. The 11441problem manifested itself as a TLB error on 64-bit systems when 11442accessing an operand stack with two or more operands. 11443 11444Fixed a problem with the PCI configuration space handlers where 11445context was getting confused between accesses. This required a 11446change to the generic address space handler and address space 11447setup definitions. Handlers now get both a global handler context 11448(this is the one passed in by the user when executing 11449AcpiInstallAddressSpaceHandler() and a specific region context 11450that is unique to each region (For example, the _ADR, _SEG and 11451_BBN values associated with a specific region). The generic 11452function definitions have changed to the following: 11453 11454typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 11455UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 11456*HandlerContext, // This used to be void *Context void 11457*RegionContext); // This is an additional parameter 11458 11459typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 11460RegionHandle, UINT32 Function, void *HandlerContext, void 11461**RegionContext); // This used to be **ReturnContext 11462 11463------------------------------------------- 11464Summary of changes for this label: 07_21_00 11465 11466Major file consolidation and rename. All files within the 11467interpreter have been renamed as well as most header files. This 11468was done to prevent collisions with existing files in the host 11469OSs -- filenames such as "config.h" and "global.h" seem to be 11470quite common. The VC project files have been updated. All 11471makefiles will require modification. 11472 11473The parser/interpreter integration continues in Phase 5 with the 11474implementation of a complete 2-pass parse (the AML is parsed 11475twice) for each table; This avoids the construction of a huge 11476parse tree and therefore reduces the amount of dynamic memory 11477required by the subsystem. Greater use of the parse object cache 11478means that performance is unaffected. 11479 11480Many comments from the two code reviews have been rolled in. 11481 11482The 64-bit alignment support is complete. 11483 11484------------------------------------------- 11485Summary of changes for this label: 06_30_00 11486 11487With a nod and a tip of the hat to the technology of yesteryear, 11488we've added support in the source code for 80 column output 11489devices. The code is now mostly constrained to 80 columns or 11490less to support environments and editors that 1) cannot display 11491or print more than 80 characters on a single line, and 2) cannot 11492disable line wrapping. 11493 11494A major restructuring of the namespace data structure has been 11495completed. The result is 1) cleaner and more 11496understandable/maintainable code, and 2) a significant reduction 11497in the dynamic memory requirement for each named ACPI object 11498(almost half). 11499 11500------------------------------------------- 11501Summary of changes for this label: 06_23_00 11502 11503Linux support has been added. In order to obtain approval to get 11504the ACPI CA subsystem into the Linux kernel, we've had to make 11505quite a few changes to the base subsystem that will affect all 11506users (all the changes are generic and OS- independent). The 11507effects of these global changes have been somewhat far reaching. 11508Files have been merged and/or renamed and interfaces have been 11509renamed. The major changes are described below. 11510 11511Osd* interfaces renamed to AcpiOs* to eliminate namespace 11512pollution/confusion within our target kernels. All OSD 11513interfaces must be modified to match the new naming convention. 11514 11515Files merged across the subsystem. A number of the smaller source 11516and header files have been merged to reduce the file count and 11517increase the density of the existing files. There are too many 11518to list here. In general, makefiles that call out individual 11519files will require rebuilding. 11520 11521Interpreter files renamed. All interpreter files now have the 11522prefix am* instead of ie* and is*. 11523 11524Header files renamed: The acapi.h file is now acpixf.h. The 11525acpiosd.h file is now acpiosxf.h. We are removing references to 11526the acronym "API" since it is somewhat windowsy. The new name is 11527"external interface" or xface or xf in the filenames.j 11528 11529 11530All manifest constants have been forced to upper case (some were 11531mixed case.) Also, the string "ACPI_" has been prepended to many 11532(not all) of the constants, typedefs, and structs. 11533 11534The globals "DebugLevel" and "DebugLayer" have been renamed 11535"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 11536 11537All other globals within the subsystem are now prefixed with 11538"AcpiGbl_" Internal procedures within the subsystem are now 11539prefixed with "Acpi" (with only a few exceptions). The original 11540two-letter abbreviation for the subcomponent remains after "Acpi" 11541- for example, CmCallocate became AcpiCmCallocate. 11542 11543Added a source code translation/conversion utility. Used to 11544generate the Linux source code, it can be modified to generate 11545other types of source as well. Can also be used to cleanup 11546existing source by removing extraneous spaces and blank lines. 11547Found in tools/acpisrc/* 11548 11549OsdUnMapMemory was renamed to OsdUnmapMemory and then 11550AcpiOsUnmapMemory. (UnMap became Unmap). 11551 11552A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 11553When set to one, this indicates that the caller wants to use the 11554 11555semaphore as a mutex, not a counting semaphore. ACPI CA uses 11556both types. However, implementers of this call may want to use 11557different OS primitives depending on the type of semaphore 11558requested. For example, some operating systems provide separate 11559 11560"mutex" and "semaphore" interfaces - where the mutex interface is 11561much faster because it doesn't have all the overhead of a full 11562semaphore implementation. 11563 11564Fixed a deadlock problem where a method that accesses the PCI 11565address space can block forever if it is the first access to the 11566space. 11567 11568------------------------------------------- 11569Summary of changes for this label: 06_02_00 11570 11571Support for environments that cannot handle unaligned data 11572accesses (e.g. firmware and OS environments devoid of alignment 11573handler technology namely SAL/EFI and the IA-64 Linux kernel) has 11574been added (via configurable macros) in these three areas: - 11575Transfer of data from the raw AML byte stream is done via byte 11576moves instead of word/dword/qword moves. - External objects are 11577aligned within the user buffer, including package elements (sub- 11578objects). - Conversion of name strings to UINT32 Acpi Names is now 11579done byte-wise. 11580 11581The Store operator was modified to mimic Microsoft's 11582implementation when storing to a Buffer Field. 11583 11584Added a check of the BM_STS bit before entering C3. 11585 11586The methods subdirectory has been obsoleted and removed. A new 11587file, cmeval.c subsumes the functionality. 11588 11589A 16-bit (DOS) version of AcpiExec has been developed. The 11590makefile is under the acpiexec directory. 11591