1---------------------------------------- 217 November 2016. Summary of changes for version 20161117: 3 4 51) ACPICA kernel-resident subsystem: 6 7Table Manager: Fixed a regression introduced in 20160729, "FADT support 8cleanup". This was an attempt to remove all references in the source to 9the FADT version 2, which never was a legal version number. It was 10skipped because it was an early version of 64-bit support that was 11eventually abandoned for the current 64-bit support. 12 13Interpreter: Fixed a problem where runtime implicit conversion was 14incorrectly disabled for the ASL operators below. This brings the 15behavior into compliance with the ACPI specification: 16 FromBCD 17 ToBCD 18 ToDecimalString 19 ToHexString 20 ToInteger 21 ToBuffer 22 23Table Manager: Added a new public interface, AcpiPutTable, used to 24release and free an ACPI table returned by AcpiGetTable and related 25interfaces. Lv Zheng. 26 27Example Code and Data Size: These are the sizes for the OS-independent 28acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 29debug version of the code includes the debug output trace mechanism and 30has a much larger code and data size. 31 32 Current Release: 33 Non-Debug Version: 140.5K Code, 58.5K Data, 198.9K Total 34 Debug Version: 201.3K Code, 82.7K Data, 284.0K Total 35 Previous Release: 36 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 37 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 38 39 402) iASL Compiler/Disassembler and Tools: 41 42Disassembler: Fixed a regression for disassembly of Resource Template. 43Detection of templates in the AML stream missed some types of templates. 44 45iASL: Fixed a problem where an Access Size error was returned for the PCC 46address space when the AccessSize of the GAS register is greater than a 47DWORD. Hoan Tran. 48 49iASL: Implemented several grammar changes for the operators below. These 50changes are slated for the next version of the ACPI specification: 51 RefOf - Disallow method invocation as an operand 52 CondRefOf - Disallow method invocation as an operand 53 DerefOf - Disallow operands that use the result from operators 54that 55 do not return a reference (Changed TermArg to 56SuperName). 57 58iASL: Control method invocations are now allowed for Target operands, as 59per the ACPI specification. Removed error for using a control method 60invocation as a Target operand. 61 62Disassembler: Improved detection of Resource Templates, Unicode, and 63Strings within Buffer objects. These subtypes do not contain a specific 64opcode to indicate the originating ASL code, and they must be detected by 65other means within the disassembler. 66 67iASL: Implemented an optimization improvement for 32-bit ACPI tables 68(DSDT/SSDT). For the 32-bit case only, compute the optimum integer opcode 69only after 64-bit to 32-bit truncation. A truncation warning message is 70still emitted, however. 71 72AcpiXtract: Implemented handling for both types of line terminators (LF 73or CR/LF) so that it can accept AcpiDump output files from any system. 74Peter Wu. 75 76AcpiBin: Added two new options for comparing AML files: 77 -a: compare and display ALL mismatches 78 -o: start compare at this offset into the second file 79 80---------------------------------------- 8130 September 2016. Summary of changes for version 20160930: 82 83 841) ACPICA kernel-resident subsystem: 85 86Fixed a regression in the internal AcpiTbFindTable function where a non 87AE_OK exception could inadvertently be returned even if the function did 88not fail. This problem affects the following operators: 89 DataTableRegion 90 LoadTable 91 92Fixed a regression in the LoadTable operator where a load to any 93namespace location other than the root no longer worked properly. 94 95Increased the maximum loop count value that will result in the 96AE_AML_INFINITE_LOOP exception. This is a mechanism that is intended to 97prevent infinite loops within the AML interpreter and thus the host OS 98kernel. The value is increased from 0xFFFF to 0xFFFFF loops (65,535 to 991,048,575). 100 101Moved the AcpiGbl_MaxLoopIterations configuration variable to the public 102acpixf.h file. This allows hosts to easily configure the maximum loop 103count at runtime. 104 105Removed an illegal character in the strtoul64.c file. This character 106caused errors with some C compilers. 107 108Example Code and Data Size: These are the sizes for the OS-independent 109acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 110debug version of the code includes the debug output trace mechanism and 111has a much larger code and data size. 112 113 Current Release: 114 Non-Debug Version: 140.4K Code, 58.1K Data, 198.5K Total 115 Debug Version: 200.7K Code, 82.1K Data, 282.8K Total 116 Previous Release: 117 Non-Debug Version: 140.0K Code, 58.1K Data, 198.1K Total 118 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 119 120 1212) iASL Compiler/Disassembler and Tools: 122 123Disassembler: Fixed a problem with the conversion of Else{If{ blocks into 124the simpler ASL ElseIf keyword. During the conversion, a trailing If 125block could be lost and missing from the disassembled output. 126 127iASL: Fixed a missing parser rule for the ObjectType operator. For ASL+, 128the missing rule caused a parse error when using the Index operator as an 129operand to ObjectType. This construct now compiles properly. Example: 130 ObjectType(PKG1[4]). 131 132iASL: Correctly handle unresolved symbols in the hardware map file (-lm 133option). Previously, unresolved symbols could cause a protection fault. 134Such symbols are now marked as unresolved in the map file. 135 136iASL: Implemented support to allow control method invocations as an 137operand to the ASL DeRefOf operator. Example: 138 DeRefOf(MTH1(Local0)) 139 140Disassembler: Improved support for the ToPLD ASL macro. Detection of a 141possible _PLD buffer now includes examination of both the normal buffer 142length (16 or 20) as well as the surrounding AML package length. 143 144Disassembler: Fixed a problem with the decoding of complex expressions 145within the Divide operator for ASL+. For the case where both the quotient 146and remainder targets are specified, the entire statement cannot be 147disassembled. Previously, the output incorrectly contained a mix of ASL- 148and ASL+ operators. This mixed statement causes a syntax error when 149compiled. Example: 150 Divide (Add (INT1, 6), 128, RSLT, QUOT) // was incorrectly 151disassembled to: 152 Divide (INT1 + 6, 128, RSLT, QUOT) 153 154iASL/Tools: Added support to process AML and non-AML ACPI tables 155consistently. For the disassembler and AcpiExec, allow all types of ACPI 156tables (AML and data tables). For the iASL -e option, allow only AML 157tables (DSDT/SSDT). 158 159---------------------------------------- 16031 August 2016. Summary of changes for version 20160831: 161 162 1631) ACPICA kernel-resident subsystem: 164 165Improve support for the so-called "module-level code", which is defined 166to be math, logical and control AML opcodes that appear outside of any 167control method. This change improves the support by adding more opcodes 168that can be executed in the manner. Some other issues have been solved, 169and the ASL grammar changes to support such code under all scope 170operators (Device, etc.) are complete. Lv Zheng. 171 172UEFI support: these OSL functions have been implemented. This is an 173additional step toward supporting the AcpiExec utility natively (with 174full hardware access) under UEFI. Marcelo Ferreira. 175 AcpiOsReadPciConfiguration 176 AcpiOsWritePciConfiguration 177 178Fixed a possible mutex error during control method auto-serialization. Lv 179Zheng. 180 181Updated support for the Generic Address Structure by fully implementing 182all GAS fields when a 32-bit address is expanded to a 64-bit GAS. Lv 183Zheng. 184 185Updated the return value for the internal _OSI method. Instead of 1860xFFFFFFFF, the "Ones" value is now returned, which is 0xFFFFFFFFFFFFFFFF 187for 64-bit ACPI tables. This fixes an incompatibility with other ACPI 188implementations, and will be reflected and clarified in the next version 189of the ACPI specification. 190 191Implemented two new table events that can be passed to an ACPICA table 192handler. These events are used to indicate a table installation or 193uninstallation. These events are used in addition to existed table load 194and unload events. Lv Zheng. 195 196Implemented a cleanup for all internal string-to-integer conversions. 197Consolidate multiple versions of this functionality and limit possible 198bases to either 10 or 16 to simplify the code. Adds a new file, 199utstrtoul64. 200 201Cleanup the inclusion order of the various compiler-specific headers. 202This simplifies build configuration management. The compiler-specific 203headers are now split out from the host-specific headers. Lv Zheng. 204 205Example Code and Data Size: These are the sizes for the OS-independent 206acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 207debug version of the code includes the debug output trace mechanism and 208has a much larger code and data size. 209 210 Current Release: 211 Non-Debug Version: 140.1K Code, 58.1K Data, 198.1K Total 212 Debug Version: 200.3K Code, 82.1K Data, 282.4K Total 213 214 2152) iASL Compiler/Disassembler and Tools: 216 217iASL/AcpiExec: Added a command line option to display the build date/time 218of the tool (-vd). This can be useful to verify that the correct version 219of the tools are being used. 220 221AML Debugger: Implemented a new subcommand ("execute predef") to execute 222all predefined control methods and names within the current namespace. 223This can be useful for debugging problems with ACPI tables and the ACPI 224namespace. 225 226---------------------------------------- 22729 July 2016. Summary of changes for version 20160729: 228 229 2301) ACPICA kernel-resident subsystem: 231 232Implemented basic UEFI support for the various ACPICA tools. This 233includes: 2341) An OSL to implement the various AcpiOs* interfaces on UEFI. 2352) Support to obtain the ACPI tables on UEFI. 2363) Local implementation of required C library functions not available on 237UEFI. 2384) A front-end (main) function for the tools for UEFI-related 239initialization. 240 241The initial deployment of this support is the AcpiDump utility executing 242as an UEFI application via EDK2 (EDKII, "UEFI Firmware Development Kit"). 243Current environments supported are Linux/Unix. MSVC generation is not 244supported at this time. See the generate/efi/README file for build 245instructions. Lv Zheng. 246 247Future plans include porting the AcpiExec utility to execute natively on 248the platform with I/O and memory access. This will allow viewing/dump of 249the platform namespace and native execution of ACPI control methods that 250access the actual hardware. To fully implement this support, the OSL 251functions below must be implemented with UEFI interfaces. Any community 252help in the implementation of these functions would be appreciated: 253 AcpiOsReadPort 254 AcpiOsWritePort 255 AcpiOsReadMemory 256 AcpiOsWriteMemory 257 AcpiOsReadPciConfiguration 258 AcpiOsWritePciConfiguration 259 260Restructured and standardized the C library configuration for ACPICA, 261resulting in the various configuration options below. This includes a 262global restructuring of the compiler-dependent and platform-dependent 263include files. These changes may affect the existing platform-dependent 264configuration files on some hosts. Lv Zheng. 265 266The current C library configuration options appear below. For any issues, 267it may be helpful to examine the existing compiler-dependent and 268platform-dependent files as examples. Lv Zheng. 269 2701) Linux kernel: 271 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 272library. 273 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 2742) Unix/Windows/BSD applications: 275 ACPI_USE_STANDARD_HEADERS=y in order to use system-provided C 276library. 277 ACPI_USE_SYSTEM_CLIBRARY=y in order not to use ACPICA mini C library. 2783) UEFI applications: 279 ACPI_USE_STANDARD_HEADERS=n in order not to use system-provided C 280library. 281 ACPI_USE_SYSTEM_CLIBRARY=n in order to use ACPICA mini C library. 2824) UEFI applications (EDK2/StdLib): 283 ACPI_USE_STANDARD_HEADERS=y in order to use EDK2 StdLib C library. 284 ACPI_USE_SYSTEM_CLIBRARY=y in order to use EDK2 StdLib C library. 285 286 287AML interpreter: "module-level code" support. Allows for execution of so- 288called "executable" AML code (math/logical operations, etc.) outside of 289control methods not just at the module level (top level) but also within 290any scope declared outside of a control method - Scope{}, Device{}, 291Processor{}, PowerResource{}, and ThermalZone{}. Lv Zheng. 292 293Simplified the configuration of the "maximum AML loops" global option by 294adding a global public variable, "AcpiGbl_MaxLoopIterations" which can be 295modified at runtime. 296 297 298Example Code and Data Size: These are the sizes for the OS-independent 299acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 300debug version of the code includes the debug output trace mechanism and 301has a much larger code and data size. 302 303 Current Release: 304 Non-Debug Version: 139.1K Code, 22.9K Data, 162.0K Total 305 Debug Version: 199.0K Code, 81.8K Data, 280.8K Total 306 307 3082) iASL Compiler/Disassembler and Tools: 309 310iASL: Add full support for the RASF ACPI table (RAS Features Table). 311Includes disassembler, data table compiler, and header support. 312 313iASL Expand "module-level code" support. Allows for 314compilation/disassembly of so-called "executable" AML code (math/logical 315operations, etc.) outside of control methods not just at the module level 316(top level) but also within any scope declared outside of a control 317method - Scope{}, Device{}, Processor{}, PowerResource{}, and 318ThermalZone{}. 319 320AcpiDump: Added support for dumping all SSDTs on newer versions of 321Windows. These tables are now easily available -- SSDTs are not available 322through the registry on older versions. 323 324---------------------------------------- 32527 May 2016. Summary of changes for version 20160527: 326 327 3281) ACPICA kernel-resident subsystem: 329 330Temporarily reverted the new arbitrary bit length/alignment support in 331AcpiHwRead/AcpiHwWrite for the Generic Address Structure. There have been 332a number of regressions with the new code that need to be fully resolved 333and tested before this support can be finally integrated into ACPICA. 334Apologies for any inconveniences these issues may have caused. 335 336The ACPI message macros are not configurable (ACPI_MSG_ERROR, 337ACPI_MSG_EXCEPTION, ACPI_MSG_WARNING, ACPI_MSG_INFO, ACPI_MSG_BIOS_ERROR, 338and ACPI_MSG_BIOS_WARNING). Lv Zheng. 339 340Fixed a couple of GCC warnings associated with the use of the -Wcast-qual 341option. Adds a new return macro, return_STR. Junk-uk Kim. 342 343Example Code and Data Size: These are the sizes for the OS-independent 344acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 345debug version of the code includes the debug output trace mechanism and 346has a much larger code and data size. 347 348 Current Release: 349 Non-Debug Version: 136.8K Code, 51.6K Data, 188.4K Total 350 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 351 Previous Release: 352 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 353 Debug Version: 200.9K Code, 82.2K Data, 283.1K Total 354 355---------------------------------------- 35622 April 2016. Summary of changes for version 20160422: 357 3581) ACPICA kernel-resident subsystem: 359 360Fixed a regression in the GAS (generic address structure) arbitrary bit 361support in AcpiHwRead/AcpiHwWrite. Problem could cause incorrect behavior 362and incorrect return values. Lv Zheng. ACPICA BZ 1270. 363 364ACPI 6.0: Added support for new/renamed resource macros. One new argument 365was added to each of these macros, and the original name has been 366deprecated. The AML disassembler will always disassemble to the new 367names. Support for the new macros was added to iASL, disassembler, 368resource manager, and the acpihelp utility. ACPICA BZ 1274. 369 370 I2cSerialBus -> I2cSerialBusV2 371 SpiSerialBus -> SpiSerialBusV2 372 UartSerialBus -> UartSerialBusV2 373 374ACPI 6.0: Added support for a new integer field that was appended to the 375package object returned by the _BIX method. This adds iASL compile-time 376and AML runtime error checking. ACPICA BZ 1273. 377 378ACPI 6.1: Added support for a new PCCT subtable, "HW-Reduced Comm 379Subspace Type2" (Headers, Disassembler, and data table compiler). 380 381Example Code and Data Size: These are the sizes for the OS-independent 382acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 383debug version of the code includes the debug output trace mechanism and 384has a much larger code and data size. 385 386 Current Release: 387 Non-Debug Version: 137.4K Code, 52.6K Data, 190.0K Total 388 Debug Version: 201.5K Code, 82.2K Data, 283.7K Total 389 Previous Release: 390 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 391 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 392 393 3942) iASL Compiler/Disassembler and Tools: 395 396iASL: Implemented an ASL grammar extension to allow/enable executable 397"module-level code" to be created and executed under the various 398operators that create new scopes. This type of AML code is already 399supported in all known AML interpreters, and the grammar change will 400appear in the next version of the ACPI specification. Simplifies the 401conditional runtime creation of named objects under these object types: 402 403 Device 404 PowerResource 405 Processor 406 Scope 407 ThermalZone 408 409iASL: Implemented a new ASL extension, a "For" loop macro to add greater 410ease-of-use to the ASL language. The syntax is similar to the 411corresponding C operator, and is implemented with the existing AML While 412opcode -- thus requiring no changes to existing AML interpreters. 413 414 For (Initialize, Predicate, Update) {TermList} 415 416Grammar: 417 ForTerm := 418 For ( 419 Initializer // Nothing | TermArg => ComputationalData 420 Predicate // Nothing | TermArg => ComputationalData 421 Update // Nothing | TermArg => ComputationalData 422 ) {TermList} 423 424 425iASL: The _HID/_ADR detection and validation has been enhanced to search 426under conditionals in order to allow these objects to be conditionally 427created at runtime. 428 429iASL: Fixed several issues with the constant folding feature. The 430improvement allows better detection and resolution of statements that can 431be folded at compile time. ACPICA BZ 1266. 432 433iASL/Disassembler: Fixed a couple issues with the Else{If{}...} 434conversion to the ASL ElseIf operator where incorrect ASL code could be 435generated. 436 437iASL/Disassembler: Fixed a problem with the ASL+ code disassembly where 438sometimes an extra (and extraneous) set of parentheses were emitted for 439some combinations of operators. Although this did not cause any problems 440with recompilation of the disassembled code, it made the code more 441difficult to read. David Box. ACPICA BZ 1231. 442 443iASL: Changed to ignore the unreferenced detection for predefined names 444of resource descriptor elements, when the resource descriptor is 445created/defined within a control method. 446 447iASL: Disassembler: Fix a possible fault with externally declared Buffer 448objects. 449 450---------------------------------------- 45118 March 2016. Summary of changes for version 20160318: 452 4531) ACPICA kernel-resident subsystem: 454 455Added support for arbitrary bit lengths and bit offsets for registers 456defined by the Generic Address Structure. Previously, only aligned bit 457lengths of 8/16/32/64 were supported. This was sufficient for many years, 458but recently some machines have been seen that require arbitrary bit- 459level support. ACPICA BZ 1240. Lv Zheng. 460 461Fixed an issue where the \_SB._INI method sometimes must be evaluated 462before any _REG methods are evaluated. Lv Zheng. 463 464Implemented several changes related to ACPI table support 465(Headers/Disassembler/TableCompiler): 466NFIT: For ACPI 6.1, updated to add some additional new fields and 467constants. 468FADT: Updated a warning message and set compliance to ACPI 6.1 (Version 4696). 470DMAR: Added new constants per the 10/2014 DMAR spec. 471IORT: Added new subtable per the 10/2015 IORT spec. 472HEST: For ACPI 6.1, added new constants and new subtable. 473DBG2: Added new constants per the 12/2015 DBG2 spec. 474FPDT: Fixed several incorrect fields, add the FPDT boot record structure. 475ACPICA BZ 1249. 476ERST/EINJ: Updated disassembler with new "Execute Timings" actions. 477 478Updated header support for the DMAR table to match the current version of 479the related spec. 480 481Added extensions to the ASL Concatenate operator to allow any ACPI object 482to be passed as an operand. Any object other than Integer/String/Buffer 483simply returns a string containing the object type. This extends the 484usefulness of the Printf macros. Previously, Concatenate would abort the 485control method if a non-data object was encountered. 486 487ACPICA source code: Deployed the C "const" keyword across the source code 488where appropriate. ACPICA BZ 732. Joerg Sonnenberger (NetBSD). 489 490Example Code and Data Size: These are the sizes for the OS-independent 491acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 492debug version of the code includes the debug output trace mechanism and 493has a much larger code and data size. 494 495 Current Release: 496 Non-Debug Version: 137.1K Code, 51.5K Data, 188.6K Total 497 Debug Version: 201.0K Code, 82.0K Data, 283.0K Total 498 Previous Release: 499 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 500 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 501 502 5032) iASL Compiler/Disassembler and Tools: 504 505iASL/Disassembler: Improved the heuristic used to determine the number of 506arguments for an externally defined control method (a method in another 507table). Although this is an improvement, there is no deterministic way to 508"guess" the number of method arguments. Only the ACPI 6.0 External opcode 509will completely solve this problem as it is deployed (automatically) in 510newer BIOS code. 511 512iASL/Disassembler: Fixed an ordering issue for emitted External() ASL 513statements that could cause errors when the disassembled file is 514compiled. ACPICA BZ 1243. David Box. 515 516iASL: Fixed a regression caused by the merger of the two versions of the 517local strtoul64. Because of a dependency on a global variable, strtoul64 518could return an error for integers greater than a 32-bit value. ACPICA BZ 5191260. 520 521iASL: Fixed a regression where a fault could occur for an ASL Return 522statement if it invokes a control method that is not resolved. ACPICA BZ 5231264. 524 525AcpiXtract: Improved input file validation: detection of binary files and 526non-acpidump text files. 527 528---------------------------------------- 52912 February 2016. Summary of changes for version 20160212: 530 5311) ACPICA kernel-resident subsystem: 532 533Implemented full support for the ACPI 6.1 specification (released in 534January). This version of the specification is available at: 535http://www.uefi.org/specifications 536 537Only a relatively small number of changes were required in ACPICA to 538support ACPI 6.1, in these areas: 539- New predefined names 540- New _HID values 541- A new subtable for HEST 542- A few other header changes for new values 543 544Ensure \_SB_._INI is executed before any _REG methods are executed. There 545appears to be existing BIOS code that relies on this behavior. Lv Zheng. 546 547Reverted a change made in version 20151218 which enabled method 548invocations to be targets of various ASL operators (SuperName and Target 549grammar elements). While the new behavior is supported by the ACPI 550specification, other AML interpreters do not support this behavior and 551never will. The ACPI specification will be updated for ACPI 6.2 to remove 552this support. Therefore, the change was reverted to the original ACPICA 553behavior. 554 555ACPICA now supports the GCC 6 compiler. 556 557Current Release: (Note: build changes increased sizes) 558 Non-Debug Version: 136.2K Code, 51.5K Data, 187.7K Total 559 Debug Version: 200.4K Code, 82.0K Data, 282.4K Total 560Previous Release: 561 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 562 Debug Version: 200.4K Code, 81.9K Data, 282.3K Total 563 564 5652) iASL Compiler/Disassembler and Tools: 566 567Completed full support for the ACPI 6.0 External() AML opcode. The 568compiler emits an external AML opcode for each ASL External statement. 569This opcode is used by the disassembler to assist with the disassembly of 570external control methods by specifying the required number of arguments 571for the method. AML interpreters do not use this opcode. To ensure that 572interpreters do not even see the opcode, a block of one or more external 573opcodes is surrounded by an "If(0)" construct. As this feature becomes 574commonly deployed in BIOS code, the ability of disassemblers to correctly 575disassemble AML code will be greatly improved. David Box. 576 577iASL: Implemented support for an optional cross-reference output file. 578The -lx option will create a the cross-reference file with the suffix 579"xrf". Three different types of cross-reference are created in this file: 580- List of object references made from within each control method 581- Invocation (caller) list for each user-defined control method 582- List of references to each non-method object in the namespace 583 584iASL: Method invocations as ASL Target operands are now disallowed and 585flagged as errors in preparation for ACPI 6.2 (see the description of the 586problem above). 587 588---------------------------------------- 5898 January 2016. Summary of changes for version 20160108: 590 5911) ACPICA kernel-resident subsystem: 592 593Updated all ACPICA copyrights and signons to 2016: Added the 2016 594copyright to all source code module headers and utility/tool signons. 595This includes the standard Linux dual-license header. This affects 596virtually every file in the ACPICA core subsystem, iASL compiler, all 597ACPICA utilities, and the ACPICA test suite. 598 599Fixed a regression introduced in version 20151218 concerning the 600execution of so-called module-level ASL/AML code. Namespace objects 601created under a module-level If() construct were not properly/fully 602entered into the namespace and could cause an interpreter fault when 603accessed. 604 605Example Code and Data Size: These are the sizes for the OS-independent 606acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 607debug version of the code includes the debug output trace mechanism and 608has a much larger code and data size. 609 610Current Release: 611 Non-Debug Version: 102.7K Code, 28.4K Data, 131.1K Total 612 Debug Version: 200.4K Code, 81.9K Data, 282.4K Total 613 Previous Release: 614 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 615 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 616 617 6182) iASL Compiler/Disassembler and Tools: 619 620Fixed a problem with the compilation of the GpioIo and GpioInt resource 621descriptors. The _PIN field name was incorrectly defined to be an array 622of 32-bit values, but the _PIN values are in fact 16 bits each. This 623would cause incorrect bit width warnings when using Word (16-bit) fields 624to access the descriptors. 625 626 627---------------------------------------- 62818 December 2015. Summary of changes for version 20151218: 629 6301) ACPICA kernel-resident subsystem: 631 632Implemented per-AML-table execution of "module-level code" as individual 633ACPI tables are loaded into the namespace during ACPICA initialization. 634In other words, any module-level code within an AML table is executed 635immediately after the table is loaded, instead of batched and executed 636after all of the tables have been loaded. This provides compatibility 637with other ACPI implementations. ACPICA BZ 1219. Bob Moore, Lv Zheng, 638David Box. 639 640To fully support the feature above, the default operation region handlers 641for the SystemMemory, SystemIO, and PCI_Config address spaces are now 642installed before any ACPI tables are loaded. This enables module-level 643code to access these address spaces during the table load and module- 644level code execution phase. ACPICA BZ 1220. Bob Moore, Lv Zheng, David 645Box. 646 647Implemented several changes to the internal _REG support in conjunction 648with the changes above. Also, changes to the AcpiExec/AcpiNames/Examples 649utilities for the changes above. Although these tools were changed, host 650operating systems that simply use the default handlers for SystemMemory, 651SystemIO, and PCI_Config spaces should not require any update. Lv Zheng. 652 653For example, in the code below, DEV1 is conditionally added to the 654namespace by the DSDT via module-level code that accesses an operation 655region. The SSDT references DEV1 via the Scope operator. DEV1 must be 656created immediately after the DSDT is loaded in order for the SSDT to 657successfully reference DEV1. Previously, this code would cause an 658AE_NOT_EXIST exception during the load of the SSDT. Now, this code is 659fully supported by ACPICA. 660 661 DefinitionBlock ("", "DSDT", 2, "Intel", "DSDT1", 1) 662 { 663 OperationRegion (OPR1, SystemMemory, 0x400, 32) 664 Field (OPR1, AnyAcc, NoLock, Preserve) 665 { 666 FLD1, 1 667 } 668 If (FLD1) 669 { 670 Device (\DEV1) 671 { 672 } 673 } 674 } 675 DefinitionBlock ("", "SSDT", 2, "Intel", "SSDT1", 1) 676 { 677 External (\DEV1, DeviceObj) 678 Scope (\DEV1) 679 { 680 } 681 } 682 683Fixed an AML interpreter problem where control method invocations were 684not handled correctly when the invocation was itself a SuperName argument 685to another ASL operator. In these cases, the method was not invoked. 686ACPICA BZ 1002. Affects the following ASL operators that have a SuperName 687argument: 688 Store 689 Acquire, Wait 690 CondRefOf, RefOf 691 Decrement, Increment 692 Load, Unload 693 Notify 694 Signal, Release, Reset 695 SizeOf 696 697Implemented automatic String-to-ObjectReference conversion support for 698packages returned by predefined names (such as _DEP). A common BIOS error 699is to add double quotes around an ObjectReference namepath, which turns 700the reference into an unexpected string object. This support detects the 701problem and corrects it before the package is returned to the caller that 702invoked the method. Lv Zheng. 703 704Implemented extensions to the Concatenate operator. Concatenate now 705accepts any type of object, it is not restricted to simply 706Integer/String/Buffer. For objects other than these 3 basic data types, 707the argument is treated as a string containing the name of the object 708type. This expands the utility of Concatenate and the Printf/Fprintf 709macros. ACPICA BZ 1222. 710 711Cleaned up the output of the ASL Debug object. The timer() value is now 712optional and no longer emitted by default. Also, the basic data types of 713Integer/String/Buffer are simply emitted as their values, without a data 714type string -- since the data type is obvious from the output. ACPICA BZ 7151221. 716 717Example Code and Data Size: These are the sizes for the OS-independent 718acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 719debug version of the code includes the debug output trace mechanism and 720has a much larger code and data size. 721 722 Current Release: 723 Non-Debug Version: 102.6K Code, 28.4K Data, 131.0K Total 724 Debug Version: 200.3K Code, 81.9K Data, 282.3K Total 725 Previous Release: 726 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 727 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 728 729 7302) iASL Compiler/Disassembler and Tools: 731 732iASL: Fixed some issues with the ASL Include() operator. This operator 733was incorrectly defined in the iASL parser rules, causing a new scope to 734be opened for the code within the include file. This could lead to 735several issues, including allowing ASL code that is technically illegal 736and not supported by AML interpreters. Note, this does not affect the 737related #include preprocessor operator. ACPICA BZ 1212. 738 739iASL/Disassembler: Implemented support for the ASL ElseIf operator. This 740operator is essentially an ASL macro since there is no AML opcode 741associated with it. The code emitted by the iASL compiler for ElseIf is 742an Else opcode followed immediately by an If opcode. The disassembler 743will now emit an ElseIf if it finds an Else immediately followed by an 744If. This simplifies the decoded ASL, especially for deeply nested 745If..Else and large Switch constructs. Thus, the disassembled code more 746closely follows the original source ASL. ACPICA BZ 1211. Example: 747 748 Old disassembly: 749 Else 750 { 751 If (Arg0 == 0x02) 752 { 753 Local0 = 0x05 754 } 755 } 756 757 New disassembly: 758 ElseIf (Arg0 == 0x02) 759 { 760 Local0 = 0x05 761 } 762 763AcpiExec: Added support for the new module level code behavior and the 764early region installation. This required a small change to the 765initialization, since AcpiExec must install its own operation region 766handlers. 767 768AcpiExec: Added support to make the debug object timer optional. Default 769is timer disabled. This cleans up the debug object output -- the timer 770data is rarely used. 771 772AcpiExec: Multiple ACPI tables are now loaded in the order that they 773appear on the command line. This can be important when there are 774interdependencies/references between the tables. 775 776iASL/Templates. Add support to generate template files with multiple 777SSDTs within a single output file. Also added ommand line support to 778specify the number of SSDTs (in addition to a single DSDT). ACPICA BZ 7791223, 1225. 780 781 782---------------------------------------- 78324 November 2015. Summary of changes for version 20151124: 784 7851) ACPICA kernel-resident subsystem: 786 787Fixed a possible regression for a previous update to FADT handling. The 788FADT no longer has a fixed table ID, causing some issues with code that 789was hardwired to a specific ID. Lv Zheng. 790 791Fixed a problem where the method auto-serialization could interfere with 792the current SyncLevel. This change makes the auto-serialization support 793transparent to the SyncLevel support and management. 794 795Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 796interface is intended for early access to the namespace during the 797initial namespace device discovery walk. The _SUB method has been seen to 798access operation regions in some cases, causing errors because the 799operation regions are not fully initialized. 800 801AML Debugger: Fixed some issues with the terminate/quit/exit commands 802that can cause faults. Lv Zheng. 803 804AML Debugger: Add thread ID support so that single-step mode only applies 805to the AML Debugger thread. This prevents runtime errors within some 806kernels. Lv Zheng. 807 808Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 809methods that are invoked by this interface are optional, removed warnings 810emitted for the case where one or more of these methods do not exist. 811ACPICA BZ 1208, original change by Prarit Bhargava. 812 813Made a major pass through the entire ACPICA source code base to 814standardize formatting that has diverged a bit over time. There are no 815functional changes, but this will of course cause quite a few code 816differences from the previous ACPICA release. 817 818Example Code and Data Size: These are the sizes for the OS-independent 819acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 820debug version of the code includes the debug output trace mechanism and 821has a much larger code and data size. 822 823 Current Release: 824 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 825 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 826 Previous Release: 827 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 828 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 829 830 8312) iASL Compiler/Disassembler and Tools: 832 833iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 834definition blocks within a single ASL file and the resulting AML file. 835Support for this type of file was also added to the various tools that 836use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 837example code below shows two definition blocks within the same file: 838 839 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 8400x12345678) 841 { 842 } 843 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 844 { 845 } 846 847iASL: Enhanced typechecking for the Name() operator. All expressions for 848the value of the named object must be reduced/folded to a single constant 849at compile time, as per the ACPI specification (the AML definition of 850Name()). 851 852iASL: Fixed some code indentation issues for the -ic and -ia options (C 853and assembly headers). Now all emitted code correctly begins in column 1. 854 855iASL: Added an error message for an attempt to open a Scope() on an 856object defined in an SSDT. The DSDT is always loaded into the namespace 857first, so any attempt to open a Scope on an SSDT object will fail at 858runtime. 859 860 861---------------------------------------- 86230 September 2015. Summary of changes for version 20150930: 863 8641) ACPICA kernel-resident subsystem: 865 866Debugger: Implemented several changes and bug fixes to assist support for 867the in-kernel version of the AML debugger. Lv Zheng. 868- Fix the "predefined" command for in-kernel debugger. 869- Do not enter debug command loop for the help and version commands. 870- Disallow "execute" command during execution/single-step of a method. 871 872Interpreter: Updated runtime typechecking for all operators that have 873target operands. The operand is resolved and validated that it is legal. 874For example, the target cannot be a non-data object such as a Device, 875Mutex, ThermalZone, etc., as per the ACPI specification. 876 877Debugger: Fixed the double-mutex user I/O handshake to work when local 878deadlock detection is enabled. 879 880Debugger: limited display of method locals and arguments (LocalX and 881ArgX) to only those that have actually been initialized. This prevents 882lines of extraneous output. 883 884Updated the definition of the NFIT table to correct the bit polarity of 885one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 886 887Example Code and Data Size: These are the sizes for the OS-independent 888acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 889debug version of the code includes the debug output trace mechanism and 890has a much larger code and data size. 891 892 Current Release: 893 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 894 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 895 Previous Release: 896 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 897 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 898 899 9002) iASL Compiler/Disassembler and Tools: 901 902iASL: Improved the compile-time typechecking for operands of many of the 903ASL operators: 904 905-- Added an option to disable compiler operand/operator typechecking (- 906ot). 907 908-- For the following operators, the TermArg operands are now validated 909when possible to be Integer data objects: BankField, OperationRegion, 910DataTableRegion, Buffer, and Package. 911 912-- Store (Source, Target): Both the source and target operands are 913resolved and checked that the operands are both legal. For example, 914neither operand can be a non-data object such as a Device, Mutex, 915ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 916operator can be used to store an object to any type of target object. 917 918-- Store (Source, Target): If the source is a Package object, the target 919must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 920is a Package, the source must also be a Package. 921 922-- Store (Source, Target): A warning is issued if the source and target 923resolve to the identical named object. 924 925-- Store (Source, <method invocation>): An error is generated for the 926target method invocation, as this construct is not supported by the AML 927interpreter. 928 929-- For all ASL math and logic operators, the target operand must be a 930data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 931includes the function return value also. 932 933-- External declarations are also included in the typechecking where 934possible. External objects defined using the UnknownObj keyword cannot be 935typechecked, however. 936 937iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 938operator: 939- Legacy code: Index(PKG1, 3) 940- New ASL+ code: PKG1[3] 941This completes the ACPI 6.0 ASL+ support as it was the only operator not 942supported. 943 944iASL: Fixed the file suffix for the preprocessor output file (.i). Two 945spaces were inadvertently appended to the filename, causing file access 946and deletion problems on some systems. 947 948ASL Test Suite (ASLTS): Updated the master makefile to generate all 949possible compiler output files when building the test suite -- thus 950exercising these features of the compiler. These files are automatically 951deleted when the test suite exits. 952 953 954---------------------------------------- 95518 August 2015. Summary of changes for version 20150818: 956 9571) ACPICA kernel-resident subsystem: 958 959Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 960Zheng. ACPICA BZ 1186. 961 962Completed development to ensure that the ACPICA Disassembler and Debugger 963are fully standalone components of ACPICA. Removed cross-component 964dependences. Lv Zheng. 965 966The max-number-of-AML-loops is now runtime configurable (previously was 967compile-time only). This is essentially a loop timeout to force-abort 968infinite AML loops. ACPCIA BZ 1192. 969 970Debugger: Cleanup output to dump ACPI names and namepaths without any 971trailing underscores. Lv Zheng. ACPICA BZ 1135. 972 973Removed unnecessary conditional compilations across the Debugger and 974Disassembler components where entire modules could be left uncompiled. 975 976The aapits test is deprecated and has been removed from the ACPICA git 977tree. The test has never been completed and has not been maintained, thus 978becoming rather useless. ACPICA BZ 1015, 794. 979 980A batch of small changes to close bugzilla and other reports: 981- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 982- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 983- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 984- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 985Moore. 986- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 987ACPICA BZ 1184. 988- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 989operators. 990- Debugger: Split debugger initialization/termination interfaces. Lv 991Zheng. 992- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 993identification. 994- AcpiExec: Add debug message during _REG method phase during table 995load/init. 996- AcpiNames: Fix a regression where some output was missing and no longer 997emitted. 998- Debugger: General cleanup and simplification. Lv Zheng. 999- Disassembler: Cleanup use of several global option variables. Lv Zheng. 1000 1001Example Code and Data Size: These are the sizes for the OS-independent 1002acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1003debug version of the code includes the debug output trace mechanism and 1004has a much larger code and data size. 1005 1006 Current Release: 1007 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 1008 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 1009 Previous Release: 1010 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1011 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1012 1013 10142) iASL Compiler/Disassembler and Tools: 1015 1016AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 1017were not handled properly and caused load errors. Now, properly invoke 1018and use the ACPICA auto-reallocate mechanism for ACPI table data 1019structures. ACPICA BZ 1188 1020 1021AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 1022BZ 1190. 1023 1024AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 1025AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 1026executed during initialization. ACPICA BZ 1187, 1189. 1027 1028iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 1029that corresponds to each disassembled ASL statement, to simplify 1030debugging. ACPICA BZ 1191. 1031 1032Debugger: Add option to the "objects" command to display a summary of the 1033current namespace objects (Object type and count). This is displayed if 1034the command is entered with no arguments. 1035 1036AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 1037 1038 1039---------------------------------------- 104017 July 2015. Summary of changes for version 20150717: 1041 10421) ACPICA kernel-resident subsystem: 1043 1044Improved the partitioning between the Debugger and Disassembler 1045components. This allows the Debugger to be used standalone within kernel 1046code without the Disassembler (which is used for single stepping also). 1047This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 1048 1049Debugger: Implemented a new command to trace the execution of control 1050methods (Trace). This is especially useful for the in-kernel version of 1051the debugger when file I/O may not be available for method trace output. 1052See the ACPICA reference for more information. Lv Zheng. 1053 1054Moved all C library prototypes (used for the local versions of these 1055functions when requested) to a new header, acclib.h 1056Cleaned up the use of non-ANSI C library functions. These functions are 1057implemented locally in ACPICA. Moved all such functions to a common 1058source file, utnonansi.c 1059 1060Debugger: Fixed a problem with the "!!" command (get last command 1061executed) where the debugger could enter an infinite loop and eventually 1062crash. 1063 1064Removed the use of local macros that were used for some of the standard C 1065library functions to automatically cast input parameters. This mostly 1066affected the is* functions where the input parameter is defined to be an 1067int. This required a few modifications to the main ACPICA source code to 1068provide casting for these functions and eliminate possible compiler 1069warnings for these parameters. 1070 1071Across the source code, added additional status/error checking to resolve 1072issues discovered by static source code analysis tools such as Coverity. 1073 1074Example Code and Data Size: These are the sizes for the OS-independent 1075acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1076debug version of the code includes the debug output trace mechanism and 1077has a much larger code and data size. 1078 1079 Current Release: 1080 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 1081 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 1082 Previous Release: 1083 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1084 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1085 1086 10872) iASL Compiler/Disassembler and Tools: 1088 1089iASL: Fixed a regression where the device map file feature no longer 1090worked properly when used in conjunction with the disassembler. It only 1091worked properly with the compiler itself. 1092 1093iASL: Implemented a new warning for method LocalX variables that are set 1094but never used (similar to a C compiler such as gcc). This also applies 1095to ArgX variables that are not defined by the parent method, and are 1096instead (legally) used as local variables. 1097 1098iASL/Preprocessor: Finished the pass-through of line numbers from the 1099preprocessor to the compiler. This ensures that compiler errors/warnings 1100have the correct original line numbers and filenames, regardless of any 1101#include files. 1102 1103iASL/Preprocessor: Fixed a couple of issues with comment handling and the 1104pass-through of comments to the preprocessor output file (which becomes 1105the compiler input file). Also fixed a problem with // comments that 1106appear after a math expression. 1107 1108iASL: Added support for the TCPA server table to the table compiler and 1109template generator. (The client table was already previously supported) 1110 1111iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 1112identify the iASL compiler. 1113 1114Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 1115multiple times. The new names are ACPI_SIGN_NEGATIVE and 1116ACPI_SIGN_POSITIVE. 1117 1118AcpiHelp: Update to expand help messages for the iASL preprocessor 1119directives. 1120 1121 1122---------------------------------------- 112319 June 2015. Summary of changes for version 20150619: 1124 1125Two regressions in version 20150616 have been addressed: 1126 1127Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 1128etc.) This update changes ACPICA to only use the standard headers for 1129functions, or the prototypes for the local versions of the C library 1130functions. Across the source code, this required some additional casts 1131for some Clib invocations for portability. Moved all local prototypes to 1132a new file, acclib.h 1133 1134Fixes several problems with recent changes to the handling of the FACS 1135table that could cause some systems not to boot. 1136 1137 1138---------------------------------------- 113916 June 2015. Summary of changes for version 20150616: 1140 1141 11421) ACPICA kernel-resident subsystem: 1143 1144Across the entire ACPICA source code base, the various macros for the C 1145library functions (such as ACPI_STRLEN, etc.) have been removed and 1146replaced by the standard C library names (strlen, etc.) The original 1147purpose for these macros is no longer applicable. This simplification 1148reduces the number of macros used in the ACPICA source code 1149significantly, improving readability and maintainability. 1150 1151Implemented support for a new ACPI table, the OSDT. This table, the 1152"override" SDT, can be loaded directly by the host OS at boot time. It 1153enables the replacement of existing namespace objects that were installed 1154via the DSDT and/or SSDTs. The primary purpose for this is to replace 1155buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 1156for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 1157Moore. 1158 1159Added support for systems with (improperly) two FACS tables -- a "32-bit" 1160table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 1161X field). This change will support both automatically. There continues to 1162be systems found with this issue. This support requires a change to the 1163AcpiSetFirmwareWakingVector interface. Also, a public global variable has 1164been added to allow the host to select which FACS is desired 1165(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 1166details Lv Zheng. 1167 1168Added a new feature to allow for systems that do not contain an FACS. 1169Although this is already supported on hardware-reduced platforms, the 1170feature has been extended for all platforms. The reasoning is that we do 1171not want to abort the entire ACPICA initialization just because the 1172system is seriously buggy and has no FACS. 1173 1174Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 1175not correctly transcribed from the ACPI specification in ACPICA version 117620150515. 1177 1178Implemented support for the _CLS object in the AcpiGetObjectInfo external 1179interface. 1180 1181Updated the definitions of the TCPA and TPM2 ACPI tables to the more 1182recent TCG ACPI Specification, December 14, 2014. Table disassembler and 1183compiler also updated. Note: The TCPA "server" table is not supported by 1184the disassembler/table-compiler at this time. 1185 1186ACPI 6.0: Added definitions for the new GIC version field in the MADT. 1187 1188Example Code and Data Size: These are the sizes for the OS-independent 1189acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1190debug version of the code includes the debug output trace mechanism and 1191has a much larger code and data size. 1192 1193 Current Release: 1194 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 1195 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 1196 Previous Release: 1197 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1198 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1199 1200 12012) iASL Compiler/Disassembler and Tools: 1202 1203Disassembler: Fixed a problem with the new symbolic operator disassembler 1204where incorrect ASL code could be emitted in some cases for the "non- 1205commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 1206ShiftRight. The actual problem cases seem to be rather unusual in common 1207ASL code, however. David Box. 1208 1209Modified the linux version of acpidump to obtain ACPI tables from not 1210just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 1211Zheng. 1212 1213iASL: Fixed a problem where the user preprocessor output file (.i) 1214contained extra data that was not expected. The compiler was using this 1215file as a temporary file and passed through #line directives in order to 1216keep compiler error messages in sync with the input file and line number 1217across multiple include files. The (.i) is no longer a temporary file as 1218the compiler uses a new, different file for the original purpose. 1219 1220iASL: Fixed a problem where comments within the original ASL source code 1221file were not passed through to the preprocessor output file, nor any 1222listing files. 1223 1224iASL: Fixed some issues for the handling of the "#include" preprocessor 1225directive and the similar (but not the same) "Include" ASL operator. 1226 1227iASL: Add support for the new OSDT in both the disassembler and compiler. 1228 1229iASL: Fixed a problem with the constant folding support where a Buffer 1230object could be incorrectly generated (incorrectly formed) during a 1231conversion to a Store() operator. 1232 1233AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 1234description text for the _REV predefined name. _REV now permanently 1235returns 2, as per the ACPI 6.0 specification. 1236 1237Debugger: Enhanced the output of the Debug ASL object for references 1238produced by the Index operator. For Buffers and strings, only output the 1239actual byte pointed to by the index. For packages, only print the single 1240package element decoded by the index. Previously, the entire 1241buffer/string/package was emitted. 1242 1243iASL/Table-compiler: Fixed a regression where the "generic" data types 1244were no longer recognized, causing errors. 1245 1246 1247---------------------------------------- 124815 May 2015. Summary of changes for version 20150515: 1249 1250This release implements most of ACPI 6.0 as described below. 1251 12521) ACPICA kernel-resident subsystem: 1253 1254Implemented runtime argument checking and return value checking for all 1255new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 1256_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 1257 1258Example Code and Data Size: These are the sizes for the OS-independent 1259acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1260debug version of the code includes the debug output trace mechanism and 1261has a much larger code and data size. 1262 1263 Current Release: 1264 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 1265 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 1266 Previous Release: 1267 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1268 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1269 1270 12712) iASL Compiler/Disassembler and Tools: 1272 1273iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 1274names (argument count validation and return value typechecking.) 1275 1276iASL disassembler and table compiler: implemented support for all new 1277ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 1278 1279iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 1280tables: FADT, MADT. 1281 1282iASL preprocessor: Added a new directive to enable inclusion of binary 1283blobs into ASL code. The new directive is #includebuffer. It takes a 1284binary file as input and emits a named ascii buffer object into the ASL 1285code. 1286 1287AcpiHelp: Added support for all new ACPI 6.0 predefined names. 1288 1289AcpiHelp: Added a new option, -d, to display all iASL preprocessor 1290directives. 1291 1292AcpiHelp: Added a new option, -t, to display all known/supported ACPI 1293tables. 1294 1295 1296---------------------------------------- 129710 April 2015. Summary of changes for version 20150410: 1298 1299Reverted a change introduced in version 20150408 that caused 1300a regression in the disassembler where incorrect operator 1301symbols could be emitted. 1302 1303 1304---------------------------------------- 130508 April 2015. Summary of changes for version 20150408: 1306 1307 13081) ACPICA kernel-resident subsystem: 1309 1310Permanently set the return value for the _REV predefined name. It now 1311returns 2 (was 5). This matches other ACPI implementations. _REV will be 1312deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 1313for ACPI 2.0 and later. It should never be used to differentiate or 1314identify operating systems. 1315 1316Added the "Windows 2015" string to the _OSI support. ACPICA will now 1317return TRUE to a query with this string. 1318 1319Fixed several issues with the local version of the printf function. 1320 1321Added the C99 compiler option (-std=c99) to the Unix makefiles. 1322 1323 Current Release: 1324 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 1325 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 1326 Previous Release: 1327 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1328 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1329 1330 13312) iASL Compiler/Disassembler and Tools: 1332 1333iASL: Implemented an enhancement to the constant folding feature to 1334transform the parse tree to a simple Store operation whenever possible: 1335 Add (2, 3, X) ==> is converted to: Store (5, X) 1336 X = 2 + 3 ==> is converted to: Store (5, X) 1337 1338Updated support for the SLIC table (Software Licensing Description Table) 1339in both the Data Table compiler and the disassembler. The SLIC table 1340support now conforms to "Microsoft Software Licensing Tables (SLIC and 1341MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 1342following the ACPI header is now defined to be "Proprietary Data", and as 1343such, can only be entered or displayed as a hex data block. 1344 1345Implemented full support for the MSDM table as described in the document 1346above. Note: The format of MSDM is similar to SLIC. Any MSDM data 1347following the ACPI header is defined to be "Proprietary Data", and can 1348only be entered or displayed as a hex data block. 1349 1350Implemented the -Pn option for the iASL Table Compiler (was only 1351implemented for the ASL compiler). This option disables the iASL 1352preprocessor. 1353 1354Disassembler: For disassembly of Data Tables, added a comment field 1355around the Ascii equivalent data that is emitted as part of the "Raw 1356Table Data" block. This prevents the iASL Preprocessor from possible 1357confusion if/when the table is compiled. 1358 1359Disassembler: Added an option (-df) to force the disassembler to assume 1360that the table being disassembled contains valid AML. This feature is 1361useful for disassembling AML files that contain ACPI signatures other 1362than DSDT or SSDT (such as OEMx or other signatures). 1363 1364Changes for the EFI version of the tools: 13651) Fixed a build error/issue 13662) Fixed a cast warning 1367 1368iASL: Fixed a path issue with the __FILE__ operator by making the 1369directory prefix optional within the internal SplitInputFilename 1370function. 1371 1372Debugger: Removed some unused global variables. 1373 1374Tests: Updated the makefile for proper generation of the AAPITS suite. 1375 1376 1377---------------------------------------- 137804 February 2015. Summary of changes for version 20150204: 1379 1380ACPICA kernel-resident subsystem: 1381 1382Updated all ACPICA copyrights and signons to 2014. Added the 2014 1383copyright to all module headers and signons, including the standard Linux 1384header. This affects virtually every file in the ACPICA core subsystem, 1385iASL compiler, all ACPICA utilities, and the test suites. 1386 1387Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 1388A raw gpe handling mechanism was created to allow better handling of GPE 1389storms that aren't easily managed by the normal handler. The raw handler 1390allows disabling/renabling of the the GPE so that interrupt storms can be 1391avoided in cases where events cannot be timely serviced. In this 1392scenario, handlers should use the AcpiSetGpe() API to disable/enable the 1393GPE. This API will leave the reference counts undisturbed, thereby 1394preventing unintentional clearing of the GPE when the intent in only to 1395temporarily disable it. Raw handlers allow enabling and disabling of a 1396GPE by removing GPE register locking. As such, raw handlers much provide 1397their own locks while using GPE API's to protect access to GPE data 1398structures. 1399Lv Zheng 1400 1401Events: Always modify GPE registers under the GPE lock. 1402Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 1403values. Reported as bug by joe.liu@apple.com. 1404 1405Unix makefiles: Separate option to disable optimizations and 1406_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 1407NOOPT disable option and creates a separate flag (NOFORTIFY) for this 1408purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 1409errors when building ACPICA. This allows disabling the option without 1410also having to disable optimazations. 1411David Box 1412 1413 Current Release: 1414 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 1415 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 1416 1417-- 1418-------------------------------------- 141907 November 2014. Summary of changes for version 20141107: 1420 1421This release is available at https://acpica.org/downloads 1422 1423This release introduces and implements language extensions to ASL that 1424provide support for symbolic ("C-style") operators and expressions. These 1425language extensions are known collectively as ASL+. 1426 1427 14281) iASL Compiler/Disassembler and Tools: 1429 1430Disassembler: Fixed a problem with disassembly of the UartSerialBus 1431macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 1432Box. 1433 1434Disassembler: Fixed the Unicode macro support to add escape sequences. 1435All non-printable ASCII values are emitted as escape sequences, as well 1436as the standard escapes for quote and backslash. Ensures that the 1437disassembled macro can be correctly recompiled. 1438 1439iASL: Added Printf/Fprintf macros for formatted output. These macros are 1440translated to existing AML Concatenate and Store operations. Printf 1441writes to the ASL Debug object. Fprintf allows the specification of an 1442ASL name as the target. Only a single format specifier is required, %o, 1443since the AML interpreter dynamically converts objects to the required 1444type. David E. Box. 1445 1446 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1447 (Concatenate (Concatenate (Concatenate ("", Arg0), 1448 ": Unexpected value for "), Arg1), ", "), Arg2), 1449 " at line "), Arg3), Debug) 1450 1451 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 1452 Arg0, Arg1, Arg2, Arg3) 1453 1454 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 1455 ("", Arg1), ": "), Arg0), " Successful"), STR1) 1456 1457 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 1458 1459iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 1460ASL parse tree before the AML code is generated. This allows blocks of 1461ASL code to be removed in order to help locate and identify problem 1462devices and/or code. David E. Box. 1463 1464AcpiExec: Added support (-fi) for an optional namespace object 1465initialization file. This file specifies initial values for namespace 1466objects as necessary for debugging and testing different ASL code paths 1467that may be taken as a result of BIOS options. 1468 1469 14702) Overview of symbolic operator support for ASL (ASL+) 1471------------------------------------------------------- 1472 1473As an extension to the ASL language, iASL implements support for symbolic 1474(C-style) operators for math and logical expressions. This can greatly 1475simplify ASL code as well as improve both readability and 1476maintainability. These language extensions can exist concurrently with 1477all legacy ASL code and expressions. 1478 1479The symbolic extensions are 100% compatible with existing AML 1480interpreters, since no new AML opcodes are created. To implement the 1481extensions, the iASL compiler transforms the symbolic expressions into 1482the legacy ASL/AML equivalents at compile time. 1483 1484Full symbolic expressions are supported, along with the standard C 1485precedence and associativity rules. 1486 1487Full disassembler support for the symbolic expressions is provided, and 1488creates an automatic migration path for existing ASL code to ASL+ code 1489via the disassembly process. By default, the disassembler now emits ASL+ 1490code with symbolic expressions. An option (-dl) is provided to force the 1491disassembler to emit legacy ASL code if desired. 1492 1493Below is the complete list of the currently supported symbolic operators 1494with examples. See the iASL User Guide for additional information. 1495 1496 1497ASL+ Syntax Legacy ASL Equivalent 1498----------- --------------------- 1499 1500 // Math operators 1501 1502Z = X + Y Add (X, Y, Z) 1503Z = X - Y Subtract (X, Y, Z) 1504Z = X * Y Multiply (X, Y, Z) 1505Z = X / Y Divide (X, Y, , Z) 1506Z = X % Y Mod (X, Y, Z) 1507Z = X << Y ShiftLeft (X, Y, Z) 1508Z = X >> Y ShiftRight (X, Y, Z) 1509Z = X & Y And (X, Y, Z) 1510Z = X | Y Or (X, Y, Z) 1511Z = X ^ Y Xor (X, Y, Z) 1512Z = ~X Not (X, Z) 1513X++ Increment (X) 1514X-- Decrement (X) 1515 1516 // Logical operators 1517 1518(X == Y) LEqual (X, Y) 1519(X != Y) LNotEqual (X, Y) 1520(X < Y) LLess (X, Y) 1521(X > Y) LGreater (X, Y) 1522(X <= Y) LLessEqual (X, Y) 1523(X >= Y) LGreaterEqual (X, Y) 1524(X && Y) LAnd (X, Y) 1525(X || Y) LOr (X, Y) 1526(!X) LNot (X) 1527 1528 // Assignment and compound assignment operations 1529 1530X = Y Store (Y, X) 1531X += Y Add (X, Y, X) 1532X -= Y Subtract (X, Y, X) 1533X *= Y Multiply (X, Y, X) 1534X /= Y Divide (X, Y, , X) 1535X %= Y Mod (X, Y, X) 1536X <<= Y ShiftLeft (X, Y, X) 1537X >>= Y ShiftRight (X, Y, X) 1538X &= Y And (X, Y, X) 1539X |= Y Or (X, Y, X) 1540X ^= Y Xor (X, Y, X) 1541 1542 15433) ASL+ Examples: 1544----------------- 1545 1546Legacy ASL: 1547 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 1548 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 15490x03FB), 1550 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 1551 { 1552 And (MEMB, 0xFFFFFFF0, SRMB) 1553 Store (MEMB, Local2) 1554 Store (PDBM, Local1) 1555 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 1556 Store (SRMB, MEMB) 1557 Or (PDBM, 0x02, PDBM) 1558 } 1559 1560ASL+ version: 1561 If (((R510 & 0x03FB) == 0x02E0) || 1562 ((R520 & 0x03FB) == 0x02E0) || 1563 ((R530 & 0x03FB) == 0x02E0) || 1564 ((R540 & 0x03FB) == 0x02E0)) 1565 { 1566 SRMB = (MEMB & 0xFFFFFFF0) 1567 Local2 = MEMB 1568 Local1 = PDBM 1569 PDBM &= 0xFFFFFFFFFFFFFFF9 1570 MEMB = SRMB 1571 PDBM |= 0x02 1572 } 1573 1574Legacy ASL: 1575 Store (0x1234, Local1) 1576 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 1577 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 1578 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 1579 Store (Index (PKG1, 0x03), Local6) 1580 Store (Add (Local3, Local2), Debug) 1581 Add (Local1, 0x0F, Local2) 1582 Add (Local1, Multiply (Local2, Local3), Local2) 1583 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 1584 1585ASL+ version: 1586 Local1 = 0x1234 1587 Local3 = (((Local1 + TEST) + 0x20) * Local2) 1588 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 1589 Local3 = (Local1 + (TEST + (0x20 * Local2))) 1590 Local6 = Index (PKG1, 0x03) 1591 Debug = (Local3 + Local2) 1592 Local2 = (Local1 + 0x0F) 1593 Local2 = (Local1 + (Local2 * Local3)) 1594 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 1595 1596 1597---------------------------------------- 159826 September 2014. Summary of changes for version 20140926: 1599 16001) ACPICA kernel-resident subsystem: 1601 1602Updated the GPIO operation region handler interface (GeneralPurposeIo). 1603In order to support GPIO Connection objects with multiple pins, along 1604with the related Field objects, the following changes to the interface 1605have been made: The Address is now defined to be the offset in bits of 1606the field unit from the previous invocation of a Connection. It can be 1607viewed as a "Pin Number Index" into the connection resource descriptor. 1608The BitWidth is the exact bit width of the field. It is usually one bit, 1609but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 1610additional information and examples. 1611 1612GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 1613corresponding _Lxx/_Exx methods are disabled (they may have been enabled 1614by the firmware), so that they cannot fire until they are enabled via 1615AcpiUpdateAllGpes. Rafael J. Wysocki. 1616 1617Added a new return flag for the Event/GPE status interfaces -- 1618AcpiGetEventStatus and AcpiGetGpeStatus. The new 1619ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 1620GPE currently has a handler associated with it, and can thus actually 1621affect the system. Lv Zheng. 1622 1623Example Code and Data Size: These are the sizes for the OS-independent 1624acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1625debug version of the code includes the debug output trace mechanism and 1626has a much larger code and data size. 1627 1628 Current Release: 1629 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 1630 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 1631 Previous Release: 1632 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1633 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1634 16352) iASL Compiler/Disassembler and Tools: 1636 1637iASL: Fixed a memory allocation/free regression introduced in 20140828 1638that could cause the compiler to crash. This was introduced inadvertently 1639during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 16401113. 1641 1642iASL: Removed two error messages that have been found to create false 1643positives, until they can be fixed and fully validated (ACPICA BZ 1112): 16441) Illegal forward reference within a method 16452) Illegal reference across two methods 1646 1647iASL: Implemented a new option (-lm) to create a hardware mapping file 1648that summarizes all GPIO, I2C, SPI, and UART connections. This option 1649works for both the compiler and disassembler. See the iASL compiler user 1650guide for additional information and examples (section 6.4.6). 1651 1652AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 1653version 2. This corrects the AE_BAD_HEADER exception seen on systems with 1654a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 1655 1656AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 1657unless STDIN is actually a terminal. Assists with batch-mode processing. 1658ACPICA BZ 1114. 1659 1660Disassembler/AcpiHelp: Added another large group of recognized _HID 1661values. 1662 1663 1664---------------------------------------- 166528 August 2014. Summary of changes for version 20140828: 1666 16671) ACPICA kernel-resident subsystem: 1668 1669Fixed a problem related to the internal use of the Timer() operator where 1670a 64-bit divide could cause an attempted link to a double-precision math 1671library. This divide is not actually necessary, so the code was 1672restructured to eliminate it. Lv Zheng. 1673 1674ACPI 5.1: Added support for the runtime validation of the _DSD package 1675(similar to the iASL support). 1676 1677ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 1678SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 1679 1680Example Code and Data Size: These are the sizes for the OS-independent 1681acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1682debug version of the code includes the debug output trace mechanism and 1683has a much larger code and data size. 1684 1685 Current Release: 1686 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 1687 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 1688 Previous Release: 1689 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 1690 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1691 16922) iASL Compiler/Disassembler and Tools: 1693 1694AcpiExec: Fixed a problem on unix systems where the original terminal 1695state was not always properly restored upon exit. Seen when using the -v 1696option. ACPICA BZ 1104. 1697 1698iASL: Fixed a problem with the validation of the ranges/length within the 1699Memory24 resource descriptor. There was a boundary condition when the 1700range was equal to the (length -1) caused by the fact that these values 1701are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 1702 1703Disassembler: Fixed a problem with the GpioInt descriptor interrupt 1704polarity 1705flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 1706is 1707now supported properly. 1708 1709ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 1710in the disassembler, data table compiler, and table template generator. 1711 1712iASL: Added a requirement for Device() objects that one of either a _HID 1713or _ADR must exist within the scope of a Device, as per the ACPI 1714specification. Remove a similar requirement that was incorrectly in place 1715for the _DSD object. 1716 1717iASL: Added error detection for illegal named references within control 1718methods that would cause runtime failures. Now trapped as errors are: 1) 1719References to objects within a non-parent control method. 2) Forward 1720references (within a method) -- for control methods, AML interpreters use 1721a one-pass parse of control methods. ACPICA BZ 1008. 1722 1723iASL: Added error checking for dependencies related to the _PSx power 1724methods. ACPICA BZ 1029. 17251) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 1726_PS3. 17272) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 1728scope. 1729 1730iASL and table compiler: Cleanup miscellaneous memory leaks by fully 1731deploying the existing object and string caches and adding new caches for 1732the table compiler. 1733 1734iASL: Split the huge parser source file into multiple subfiles to improve 1735manageability. Generation now requires the M4 macro preprocessor, which 1736is part of the Bison distribution on both unix and windows platforms. 1737 1738AcpiSrc: Fixed and removed all extraneous warnings generated during 1739entire ACPICA source code scan and/or conversion. 1740 1741 1742---------------------------------------- 1743 174424 July 2014. Summary of changes for version 20140724: 1745 1746The ACPI 5.1 specification has been released and is available at: 1747http://uefi.org/specs/access 1748 1749 17500) ACPI 5.1 support in ACPICA: 1751 1752ACPI 5.1 is fully supported in ACPICA as of this release. 1753 1754New predefined names. Support includes iASL and runtime ACPICA 1755validation. 1756 _CCA (Cache Coherency Attribute). 1757 _DSD (Device-Specific Data). David Box. 1758 1759Modifications to existing ACPI tables. Support includes headers, iASL 1760Data Table compiler, disassembler, and the template generator. 1761 FADT - New fields and flags. Graeme Gregory. 1762 GTDT - One new subtable and new fields. Tomasz Nowicki. 1763 MADT - Two new subtables. Tomasz Nowicki. 1764 PCCT - One new subtable. 1765 1766Miscellaneous. 1767 New notification type for System Resource Affinity change events. 1768 1769 17701) ACPICA kernel-resident subsystem: 1771 1772Fixed a regression introduced in 20140627 where a fault can happen during 1773the deletion of Alias AML namespace objects. The problem affected both 1774the core ACPICA and the ACPICA tools including iASL and AcpiExec. 1775 1776Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 1777simple mechanism to enable wake GPEs that have no associated handler or 1778control method. Rafael Wysocki. 1779 1780Updated the AcpiEnableGpe interface to disallow the enable if there is no 1781handler or control method associated with the particular GPE. This will 1782help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 1783 1784Updated GPE handling and dispatch by disabling the GPE before clearing 1785the status bit for edge-triggered GPEs. Lv Zheng. 1786 1787Added Timer() support to the AML Debug object. The current timer value is 1788now displayed with each invocation of (Store to) the debug object to 1789enable simple generation of execution times for AML code (method 1790execution for example.) ACPICA BZ 1093. 1791 1792Example Code and Data Size: These are the sizes for the OS-independent 1793acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1794debug version of the code includes the debug output trace mechanism and 1795has a much larger code and data size. 1796 1797 Current Release: 1798 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 1799 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1800 Previous Release: 1801 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1802 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1803 1804 18052) iASL Compiler/Disassembler and Tools: 1806 1807Fixed an issue with the recently added local printf implementation, 1808concerning width/precision specifiers that could cause incorrect output. 1809Lv Zheng. ACPICA BZ 1094. 1810 1811Disassembler: Added support to detect buffers that contain UUIDs and 1812disassemble them to an invocation of the ToUUID operator. Also emit 1813commented descriptions of known ACPI-related UUIDs. 1814 1815AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 1816-u. Adds three new files. 1817 1818iASL: Update table compiler and disassembler for DMAR table changes that 1819were introduced in September 2013. With assistance by David Woodhouse. 1820 1821---------------------------------------- 182227 June 2014. Summary of changes for version 20140627: 1823 18241) ACPICA kernel-resident subsystem: 1825 1826Formatted Output: Implemented local versions of standard formatted output 1827utilities such as printf, etc. Over time, it has been discovered that 1828there are in fact many portability issues with printf, and the addition 1829of this feature will fix/prevent these issues once and for all. Some 1830known issues are summarized below: 1831 18321) Output of 64-bit values is not portable. For example, UINT64 is %ull 1833for the Linux kernel and is %uI64 for some MSVC versions. 18342) Invoking printf consistently in a manner that is portable across both 183532-bit and 64-bit platforms is difficult at best in many situations. 18363) The output format for pointers varies from system to system (leading 1837zeros especially), and leads to inconsistent output from ACPICA across 1838platforms. 18394) Certain platform-specific printf formats may conflict with ACPICA use. 18405) If there is no local C library available, ACPICA now has local support 1841for printf. 1842 1843-- To address these printf issues in a complete manner, ACPICA now 1844directly implements a small subset of printf format specifiers, only 1845those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 1846 1847Implemented support for ACPICA generation within the EFI environment. 1848Initially, the AcpiDump utility is supported in the UEFI shell 1849environment. Lv Zheng. 1850 1851Added a new external interface, AcpiLogError, to improve ACPICA 1852portability. This allows the host to redirect error messages from the 1853ACPICA utilities. Lv Zheng. 1854 1855Added and deployed new OSL file I/O interfaces to improve ACPICA 1856portability: 1857 AcpiOsOpenFile 1858 AcpiOsCloseFile 1859 AcpiOsReadFile 1860 AcpiOsWriteFile 1861 AcpiOsGetFileOffset 1862 AcpiOsSetFileOffset 1863There are C library implementations of these functions in the new file 1864service_layers/oslibcfs.c -- however, the functions can be implemented by 1865the local host in any way necessary. Lv Zheng. 1866 1867Implemented a mechanism to disable/enable ACPI table checksum validation 1868at runtime. This can be useful when loading tables very early during OS 1869initialization when it may not be possible to map the entire table in 1870order to compute the checksum. Lv Zheng. 1871 1872Fixed a buffer allocation issue for the Generic Serial Bus support. 1873Originally, a fixed buffer length was used. This change allows for 1874variable-length buffers based upon the protocol indicated by the field 1875access attributes. Reported by Lan Tianyu. Lv Zheng. 1876 1877Fixed a problem where an object detached from a namespace node was not 1878properly terminated/cleared and could cause a circular list problem if 1879reattached. ACPICA BZ 1063. David Box. 1880 1881Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 1882 1883Fixed a possible memory leak in an error return path within the function 1884AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 1885 1886Example Code and Data Size: These are the sizes for the OS-independent 1887acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1888debug version of the code includes the debug output trace mechanism and 1889has a much larger code and data size. 1890 1891 Current Release: 1892 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1893 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1894 Previous Release: 1895 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1896 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1897 1898 18992) iASL Compiler/Disassembler and Tools: 1900 1901Disassembler: Add dump of ASCII equivalent text within a comment at the 1902end of each line of the output for the Buffer() ASL operator. 1903 1904AcpiDump: Miscellaneous changes: 1905 Fixed repetitive table dump in -n mode. 1906 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 1907the ACPI 2.0 GUID fails. 1908 1909iASL: Fixed a problem where the compiler could fault if incorrectly given 1910an acpidump output file as input. ACPICA BZ 1088. David Box. 1911 1912AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 1913they are invoked without any arguments. 1914 1915Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 19161086. Colin Ian King. 1917 1918Disassembler: Cleaned up a block of code that extracts a parent Op 1919object. Added a comment that explains that the parent is guaranteed to be 1920valid in this case. ACPICA BZ 1069. 1921 1922 1923---------------------------------------- 192424 April 2014. Summary of changes for version 20140424: 1925 19261) ACPICA kernel-resident subsystem: 1927 1928Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 1929Some of these tables are known to contain a trailing NULL entry. Lv 1930Zheng. 1931 1932Removed an extraneous error message for the case where there are a large 1933number of system GPEs (> 124). This was the "32-bit FADT register is too 1934long to convert to GAS struct" message, which is irrelevant for GPEs 1935since the GPEx_BLK_LEN fields of the FADT are always used instead of the 1936(limited capacity) GAS bit length. Also, several changes to ensure proper 1937support for GPE numbers > 255, where some "GPE number" fields were 8-bits 1938internally. 1939 1940Implemented and deployed additional configuration support for the public 1941ACPICA external interfaces. Entire classes of interfaces can now be 1942easily modified or configured out, replaced by stubbed inline functions 1943by default. Lv Zheng. 1944 1945Moved all public ACPICA runtime configuration globals to the public 1946ACPICA external interface file for convenience. Also, removed some 1947obsolete/unused globals. See the file acpixf.h. Lv Zheng. 1948 1949Documentation: Added a new section to the ACPICA reference describing the 1950maximum number of GPEs that can be supported by the FADT-defined GPEs in 1951block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 1952reference. 1953 1954Example Code and Data Size: These are the sizes for the OS-independent 1955acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1956debug version of the code includes the debug output trace mechanism and 1957has a much larger code and data size. 1958 1959 Current Release: 1960 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1961 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1962 Previous Release: 1963 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1964 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1965 1966 19672) iASL Compiler/Disassembler and Tools: 1968 1969iASL and disassembler: Add full support for the LPIT table (Low Power 1970Idle Table). Includes support in the disassembler, data table compiler, 1971and template generator. 1972 1973AcpiDump utility: 19741) Add option to force the use of the RSDT (over the XSDT). 19752) Improve validation of the RSDP signature (use 8 chars instead of 4). 1976 1977iASL: Add check for predefined packages that are too large. For 1978predefined names that contain subpackages, check if each subpackage is 1979too large. (Check for too small already exists.) 1980 1981Debugger: Updated the GPE command (which simulates a GPE by executing the 1982GPE code paths in ACPICA). The GPE device is now optional, and defaults 1983to the GPE 0/1 FADT-defined blocks. 1984 1985Unix application OSL: Update line-editing support. Add additional error 1986checking and take care not to reset terminal attributes on exit if they 1987were never set. This should help guarantee that the terminal is always 1988left in the previous state on program exit. 1989 1990 1991---------------------------------------- 199225 March 2014. Summary of changes for version 20140325: 1993 19941) ACPICA kernel-resident subsystem: 1995 1996Updated the auto-serialize feature for control methods. This feature 1997automatically serializes all methods that create named objects in order 1998to prevent runtime errors. The update adds support to ignore the 1999currently executing AML SyncLevel when invoking such a method, in order 2000to prevent disruption of any existing SyncLevel priorities that may exist 2001in the AML code. Although the use of SyncLevels is relatively rare, this 2002change fixes a regression where an AE_AML_MUTEX_ORDER exception can 2003appear on some machines starting with the 20140214 release. 2004 2005Added a new external interface to allow the host to install ACPI tables 2006very early, before the namespace is even created. AcpiInstallTable gives 2007the host additional flexibility for ACPI table management. Tables can be 2008installed directly by the host as if they had originally appeared in the 2009XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 2010(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 2011with additional internal restructuring and cleanup. See the ACPICA 2012Reference for interface details. Lv Zheng. 2013 2014Added validation of the checksum for all incoming dynamically loaded 2015tables (via external interfaces or via AML Load/LoadTable operators). Lv 2016Zheng. 2017 2018Updated the use of the AcpiOsWaitEventsComplete interface during Notify 2019and GPE handler removal. Restructured calls to eliminate possible race 2020conditions. Lv Zheng. 2021 2022Added a warning for the use/execution of the ASL/AML Unload (table) 2023operator. This will help detect and identify machines that use this 2024operator if and when it is ever used. This operator has never been seen 2025in the field and the usage model and possible side-effects of the drastic 2026runtime action of a full table removal are unknown. 2027 2028Reverted the use of #pragma push/pop which was introduced in the 20140214 2029release. It appears that push and pop are not implemented by enough 2030compilers to make the use of this feature feasible for ACPICA at this 2031time. However, these operators may be deployed in a future ACPICA 2032release. 2033 2034Added the missing EXPORT_SYMBOL macros for the install and remove SCI 2035handler interfaces. 2036 2037Source code generation: 20381) Disabled the use of the "strchr" macro for the gcc-specific 2039generation. For some versions of gcc, this macro can periodically expose 2040a compiler bug which in turn causes compile-time error(s). 20412) Added support for PPC64 compilation. Colin Ian King. 2042 2043Example Code and Data Size: These are the sizes for the OS-independent 2044acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2045debug version of the code includes the debug output trace mechanism and 2046has a much larger code and data size. 2047 2048 Current Release: 2049 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 2050 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 2051 Previous Release: 2052 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2053 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2054 2055 20562) iASL Compiler/Disassembler and Tools: 2057 2058Disassembler: Added several new features to improve the readability of 2059the resulting ASL code. Extra information is emitted within comment 2060fields in the ASL code: 20611) Known _HID/_CID values are decoded to descriptive text. 20622) Standard values for the Notify() operator are decoded to descriptive 2063text. 20643) Target operands are expanded to full pathnames (in a comment) when 2065possible. 2066 2067Disassembler: Miscellaneous updates for extern() handling: 20681) Abort compiler if file specified by -fe option does not exist. 20692) Silence unnecessary warnings about argument count mismatches. 20703) Update warning messages concerning unresolved method externals. 20714) Emit "UnknownObj" keyword for externals whose type cannot be 2072determined. 2073 2074AcpiHelp utility: 20751) Added the -a option to display both the ASL syntax and the AML 2076encoding for an input ASL operator. This effectively displays all known 2077information about an ASL operator with one AcpiHelp invocation. 20782) Added substring match support (similar to a wildcard) for the -i 2079(_HID/PNP IDs) option. 2080 2081iASL/Disassembler: Since this tool does not yet support execution on big- 2082endian machines, added detection of endianness and an error message if 2083execution is attempted on big-endian. Support for big-endian within iASL 2084is a feature that is on the ACPICA to-be-done list. 2085 2086AcpiBin utility: 20871) Remove option to extract binary files from an acpidump; this function 2088is made obsolete by the AcpiXtract utility. 20892) General cleanup of open files and allocated buffers. 2090 2091 2092---------------------------------------- 209314 February 2014. Summary of changes for version 20140214: 2094 20951) ACPICA kernel-resident subsystem: 2096 2097Implemented a new mechanism to proactively prevent problems with ill- 2098behaved reentrant control methods that create named ACPI objects. This 2099behavior is illegal as per the ACPI specification, but is nonetheless 2100frequently seen in the field. Previously, this could lead to an 2101AE_ALREADY_EXISTS exception if the method was actually entered by more 2102than one thread. This new mechanism detects such methods at table load 2103time and marks them "serialized" to prevent reentrancy. A new global 2104option, AcpiGbl_AutoSerializeMethods, has been added to disable this 2105feature if desired. This mechanism and global option obsoletes and 2106supersedes the previous AcpiGbl_SerializeAllMethods option. 2107 2108Added the "Windows 2013" string to the _OSI support. ACPICA will now 2109respond TRUE to _OSI queries with this string. It is the stated policy of 2110ACPICA to add new strings to the _OSI support as soon as possible after 2111they are defined. See the full ACPICA _OSI policy which has been added to 2112the utilities/utosi.c file. 2113 2114Hardened/updated the _PRT return value auto-repair code: 21151) Do not abort the repair on a single subpackage failure, continue to 2116check all subpackages. 21172) Add check for the minimum subpackage length (4). 21183) Properly handle extraneous NULL package elements. 2119 2120Added support to avoid the possibility of infinite loops when traversing 2121object linked lists. Never allow an infinite loop, even in the face of 2122corrupted object lists. 2123 2124ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 2125pack(pop) directives to ensure that the ACPICA headers are independent of 2126compiler settings or other host headers. 2127 2128Example Code and Data Size: These are the sizes for the OS-independent 2129acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2130debug version of the code includes the debug output trace mechanism and 2131has a much larger code and data size. 2132 2133 Current Release: 2134 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 2135 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 2136 Previous Release: 2137 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2138 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2139 2140 21412) iASL Compiler/Disassembler and Tools: 2142 2143iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 2144first reserved field was incorrectly forced to have a value of zero. This 2145change correctly forces the field to have a value of one. ACPICA BZ 1081. 2146 2147Debugger: Added missing support for the "Extra" and "Data" subobjects 2148when displaying object data. 2149 2150Debugger: Added support to display entire object linked lists when 2151displaying object data. 2152 2153iASL: Removed the obsolete -g option to obtain ACPI tables from the 2154Windows registry. This feature has been superseded by the acpidump 2155utility. 2156 2157 2158---------------------------------------- 215914 January 2014. Summary of changes for version 20140114: 2160 21611) ACPICA kernel-resident subsystem: 2162 2163Updated all ACPICA copyrights and signons to 2014. Added the 2014 2164copyright to all module headers and signons, including the standard Linux 2165header. This affects virtually every file in the ACPICA core subsystem, 2166iASL compiler, all ACPICA utilities, and the test suites. 2167 2168Improved parameter validation for AcpiInstallGpeBlock. Added the 2169following checks: 21701) The incoming device handle refers to type ACPI_TYPE_DEVICE. 21712) There is not already a GPE block attached to the device. 2172Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 2173device. 2174 2175Correctly support "references" in the ACPI_OBJECT. This change fixes the 2176support to allow references (namespace nodes) to be passed as arguments 2177to control methods via the evaluate object interface. This is probably 2178most useful for testing purposes, however. 2179 2180Improved support for 32/64 bit physical addresses in printf()-like 2181output. This change improves the support for physical addresses in printf 2182debug statements and other output on both 32-bit and 64-bit hosts. It 2183consistently outputs the appropriate number of bytes for each host. The 2184%p specifier is unsatisfactory since it does not emit uniform output on 2185all hosts/clib implementations (on some, leading zeros are not supported, 2186leading to difficult-to-read output). 2187 2188Example Code and Data Size: These are the sizes for the OS-independent 2189acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2190debug version of the code includes the debug output trace mechanism and 2191has a much larger code and data size. 2192 2193 Current Release: 2194 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 2195 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 2196 Previous Release: 2197 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2198 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2199 2200 22012) iASL Compiler/Disassembler and Tools: 2202 2203iASL: Fix a possible fault when using the Connection() operator. Fixes a 2204problem if the parent Field definition for the Connection operator refers 2205to an operation region that does not exist. ACPICA BZ 1064. 2206 2207AcpiExec: Load of local test tables is now optional. The utility has the 2208capability to load some various tables to test features of ACPICA. 2209However, there are enough of them that the output of the utility became 2210confusing. With this change, only the required local tables are displayed 2211(RSDP, XSDT, etc.) along with the actual tables loaded via the command 2212line specification. This makes the default output simler and easier to 2213understand. The -el command line option restores the original behavior 2214for testing purposes. 2215 2216AcpiExec: Added support for overlapping operation regions. This change 2217expands the simulation of operation regions by supporting regions that 2218overlap within the given address space. Supports SystemMemory and 2219SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 2220 2221AcpiExec: Added region handler support for PCI_Config and EC spaces. This 2222allows AcpiExec to simulate these address spaces, similar to the current 2223support for SystemMemory and SystemIO. 2224 2225Debugger: Added new command to read/write/compare all namespace objects. 2226The command "test objects" will exercise the entire namespace by writing 2227new values to each data object, and ensuring that the write was 2228successful. The original value is then restored and verified. 2229 2230Debugger: Added the "test predefined" command. This change makes this 2231test public and puts it under the new "test" command. The test executes 2232each and every predefined name within the current namespace. 2233 2234 2235---------------------------------------- 223618 December 2013. Summary of changes for version 20131218: 2237 2238Global note: The ACPI 5.0A specification was released this month. There 2239are no changes needed for ACPICA since this release of ACPI is an 2240errata/clarification release. The specification is available at 2241acpi.info. 2242 2243 22441) ACPICA kernel-resident subsystem: 2245 2246Added validation of the XSDT root table if it is present. Some older 2247platforms contain an XSDT that is ill-formed or otherwise invalid (such 2248as containing some or all entries that are NULL pointers). This change 2249adds a new function to validate the XSDT before actually using it. If the 2250XSDT is found to be invalid, ACPICA will now automatically fall back to 2251using the RSDT instead. Original implementation by Zhao Yakui. Ported to 2252ACPICA and enhanced by Lv Zheng and Bob Moore. 2253 2254Added a runtime option to ignore the XSDT and force the use of the RSDT. 2255This change adds a runtime option that will force ACPICA to use the RSDT 2256instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 2257requires that an XSDT be used instead of the RSDT, the XSDT has been 2258found to be corrupt or ill-formed on some machines. Lv Zheng. 2259 2260Added a runtime option to favor 32-bit FADT register addresses over the 226164-bit addresses. This change adds an option to favor 32-bit FADT 2262addresses when there is a conflict between the 32-bit and 64-bit versions 2263of the same register. The default behavior is to use the 64-bit version 2264in accordance with the ACPI specification. This can now be overridden via 2265the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 2266 2267During the change above, the internal "Convert FADT" and "Verify FADT" 2268functions have been merged to simplify the code, making it easier to 2269understand and maintain. ACPICA BZ 933. 2270 2271Improve exception reporting and handling for GPE block installation. 2272Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 2273status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 2274 2275Added helper macros to extract bus/segment numbers from the HEST table. 2276This change adds two macros to extract the encoded bus and segment 2277numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 2278Betty Dall <betty.dall@hp.com> 2279 2280Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 2281by ACPICA. It is not a public macro, so it should have no effect on 2282existing OSV code. Lv Zheng. 2283 2284Example Code and Data Size: These are the sizes for the OS-independent 2285acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2286debug version of the code includes the debug output trace mechanism and 2287has a much larger code and data size. 2288 2289 Current Release: 2290 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 2291 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 2292 Previous Release: 2293 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2294 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2295 2296 22972) iASL Compiler/Disassembler and Tools: 2298 2299Disassembler: Improved pathname support for emitted External() 2300statements. This change adds full pathname support for external names 2301that have been resolved internally by the inclusion of additional ACPI 2302tables (via the iASL -e option). Without this change, the disassembler 2303can emit multiple externals for the same object, or it become confused 2304when the Scope() operator is used on an external object. Overall, greatly 2305improves the ability to actually recompile the emitted ASL code when 2306objects a referenced across multiple ACPI tables. Reported by Michael 2307Tsirkin (mst@redhat.com). 2308 2309Tests/ASLTS: Updated functional control suite to execute with no errors. 2310David Box. Fixed several errors related to the testing of the interpreter 2311slack mode. Lv Zheng. 2312 2313iASL: Added support to detect names that are declared within a control 2314method, but are unused (these are temporary names that are only valid 2315during the time the method is executing). A remark is issued for these 2316cases. ACPICA BZ 1022. 2317 2318iASL: Added full support for the DBG2 table. Adds full disassembler, 2319table compiler, and template generator support for the DBG2 table (Debug 2320Port 2 table). 2321 2322iASL: Added full support for the PCCT table, update the table definition. 2323Updates the PCCT table definition in the actbl3.h header and adds table 2324compiler and template generator support. 2325 2326iASL: Added an option to emit only error messages (no warnings/remarks). 2327The -ve option will enable only error messages, warnings and remarks are 2328suppressed. This can simplify debugging when only the errors are 2329important, such as when an ACPI table is disassembled and there are many 2330warnings and remarks -- but only the actual errors are of real interest. 2331 2332Example ACPICA code (source/tools/examples): Updated the example code so 2333that it builds to an actual working program, not just example code. Added 2334ACPI tables and execution of an example control method in the DSDT. Added 2335makefile support for Unix generation. 2336 2337 2338---------------------------------------- 233915 November 2013. Summary of changes for version 20131115: 2340 2341This release is available at https://acpica.org/downloads 2342 2343 23441) ACPICA kernel-resident subsystem: 2345 2346Resource Manager: Fixed loop termination for the "get AML length" 2347function. The loop previously had an error termination on a NULL resource 2348pointer, which can never happen since the loop simply increments a valid 2349resource pointer. This fix changes the loop to terminate with an error on 2350an invalid end-of-buffer condition. The problem can be seen as an 2351infinite loop by callers to AcpiSetCurrentResources with an invalid or 2352corrupted resource descriptor, or a resource descriptor that is missing 2353an END_TAG descriptor. Reported by Dan Carpenter 2354<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 2355 2356Table unload and ACPICA termination: Delete all attached data objects 2357during namespace node deletion. This fix updates namespace node deletion 2358to delete the entire list of attached objects (attached via 2359AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 23601024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 2361 2362ACPICA termination: Added support to delete all objects attached to the 2363root namespace node. This fix deletes any and all objects that have been 2364attached to the root node via AcpiAttachData. Previously, none of these 2365objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 2366 2367Debug output: Do not emit the function nesting level for the in-kernel 2368build. The nesting level is really only useful during a single-thread 2369execution. Therefore, only enable this output for the AcpiExec utility. 2370Also, only emit the thread ID when executing under AcpiExec (Context 2371switches are still always detected and a message is emitted). ACPICA BZ 2372972. 2373 2374Example Code and Data Size: These are the sizes for the OS-independent 2375acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2376debug version of the code includes the debug output trace mechanism and 2377has a much larger code and data size. 2378 2379 Current Release: 2380 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 2381 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 2382 Previous Release: 2383 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2384 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2385 2386 23872) iASL Compiler/Disassembler and Tools: 2388 2389AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 2390correct portable POSIX header for terminal control functions. 2391 2392Disassembler: Fixed control method invocation issues related to the use 2393of the CondRefOf() operator. The problem is seen in the disassembly where 2394control method invocations may not be disassembled properly if the 2395control method name has been used previously as an argument to CondRefOf. 2396The solution is to not attempt to emit an external declaration for the 2397CondRefOf target (it is not necessary in the first place). This prevents 2398disassembler object type confusion. ACPICA BZ 988. 2399 2400Unix Makefiles: Added an option to disable compiler optimizations and the 2401_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 2402with optimizations (reportedly, gcc 4.4 for example). This change adds a 2403command line option for make (NOOPT) that disables all compiler 2404optimizations and the _FORTIFY_SOURCE compiler flag. The default 2405optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 24061034. Lv Zheng, Bob Moore. 2407 2408Tests/ASLTS: Added options to specify individual test cases and modes. 2409This allows testers running aslts.sh to optionally specify individual 2410test modes and test cases. Also added an option to disable the forced 2411generation of the ACPICA tools from source if desired. Lv Zheng. 2412 2413---------------------------------------- 241427 September 2013. Summary of changes for version 20130927: 2415 2416This release is available at https://acpica.org/downloads 2417 2418 24191) ACPICA kernel-resident subsystem: 2420 2421Fixed a problem with store operations to reference objects. This change 2422fixes a problem where a Store operation to an ArgX object that contained 2423a 2424reference to a field object did not complete the automatic dereference 2425and 2426then write to the actual field object. Instead, the object type of the 2427field object was inadvertently changed to match the type of the source 2428operand. The new behavior will actually write to the field object (buffer 2429field or field unit), thus matching the correct ACPI-defined behavior. 2430 2431Implemented support to allow the host to redefine individual OSL 2432prototypes. This change enables the host to redefine OSL prototypes found 2433in the acpiosxf.h file. This allows the host to implement OSL interfaces 2434with a macro or inlined function. Further, it allows the host to add any 2435additional required modifiers such as __iomem, __init, __exit, etc., as 2436necessary on a per-interface basis. Enables maximum flexibility for the 2437OSL interfaces. Lv Zheng. 2438 2439Hardcoded the access width for the FADT-defined reset register. The ACPI 2440specification requires the reset register width to be 8 bits. ACPICA now 2441hardcodes the width to 8 and ignores the FADT width value. This provides 2442compatibility with other ACPI implementations that have allowed BIOS code 2443with bad register width values to go unnoticed. Matthew Garett, Bob 2444Moore, 2445Lv Zheng. 2446 2447Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 2448used 2449in the OSL header (acpiosxf). The change modifies the position of this 2450macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 2451build issues if the OSL defines the implementation of the interface to be 2452an inline stub function. Lv Zheng. 2453 2454Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 2455initialization interfaces. This change adds a new macro for the main init 2456and terminate external interfaces in order to support hosts that require 2457additional or different processing for these functions. Changed from 2458ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 2459Zheng, Bob Moore. 2460 2461Cleaned up the memory allocation macros for configurability. In the 2462common 2463case, the ACPI_ALLOCATE and related macros now resolve directly to their 2464respective AcpiOs* OSL interfaces. Two options: 24651) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 2466default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 24672) For AcpiExec (and for debugging), the macros can optionally be 2468resolved 2469to the local ACPICA interfaces that track each allocation (local tracking 2470is used to immediately detect memory leaks). 2471Lv Zheng. 2472 2473Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 2474to predefine this macro to either TRUE or FALSE during the system build. 2475 2476Replaced __FUNCTION_ with __func__ in the gcc-specific header. 2477 2478Example Code and Data Size: These are the sizes for the OS-independent 2479acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2480debug version of the code includes the debug output trace mechanism and 2481has a much larger code and data size. 2482 2483 Current Release: 2484 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 2485 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 2486 Previous Release: 2487 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2488 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2489 2490 24912) iASL Compiler/Disassembler and Tools: 2492 2493iASL: Implemented wildcard support for the -e option. This simplifies use 2494when there are many SSDTs that must be included to resolve external 2495method 2496declarations. ACPICA BZ 1041. Example: 2497 iasl -e ssdt*.dat -d dsdt.dat 2498 2499AcpiExec: Add history/line-editing for Unix/Linux systems. This change 2500adds a portable module that implements full history and limited line 2501editing for Unix and Linux systems. It does not use readline() due to 2502portability issues. Instead it uses the POSIX termio interface to put the 2503terminal in raw input mode so that the various special keys can be 2504trapped 2505(such as up/down-arrow for history support and left/right-arrow for line 2506editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 2507 2508AcpiXtract: Add support to handle (ignore) "empty" lines containing only 2509one or more spaces. This provides compatible with early or different 2510versions of the AcpiDump utility. ACPICA BZ 1044. 2511 2512AcpiDump: Do not ignore tables that contain only an ACPI table header. 2513Apparently, some BIOSs create SSDTs that contain an ACPI table header but 2514no other data. This change adds support to dump these tables. Any tables 2515shorter than the length of an ACPI table header remain in error (an error 2516message is emitted). Reported by Yi Li. 2517 2518Debugger: Echo actual command along with the "unknown command" message. 2519 2520---------------------------------------- 252123 August 2013. Summary of changes for version 20130823: 2522 25231) ACPICA kernel-resident subsystem: 2524 2525Implemented support for host-installed System Control Interrupt (SCI) 2526handlers. Certain ACPI functionality requires the host to handle raw 2527SCIs. For example, the "SCI Doorbell" that is defined for memory power 2528state support requires the host device driver to handle SCIs to examine 2529if the doorbell has been activated. Multiple SCI handlers can be 2530installed to allow for future expansion. New external interfaces are 2531AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 2532details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 2533 2534Operation region support: Never locally free the handler "context" 2535pointer. This change removes some dangerous code that attempts to free 2536the handler context pointer in some (rare) circumstances. The owner of 2537the handler owns this pointer and the ACPICA code should never touch it. 2538Although not seen to be an issue in any kernel, it did show up as a 2539problem (fault) under AcpiExec. Also, set the internal storage field for 2540the context pointer to zero when the region is deactivated, simply for 2541sanity. David Box. ACPICA BZ 1039. 2542 2543AcpiRead: On error, do not modify the return value target location. If an 2544error happens in the middle of a split 32/32 64-bit I/O operation, do not 2545modify the target of the return value pointer. Makes the code consistent 2546with the rest of ACPICA. Bjorn Helgaas. 2547 2548Example Code and Data Size: These are the sizes for the OS-independent 2549acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2550debug version of the code includes the debug output trace mechanism and 2551has a much larger code and data size. 2552 2553 Current Release: 2554 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 2555 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2556 Previous Release: 2557 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2558 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 2559 2560 25612) iASL Compiler/Disassembler and Tools: 2562 2563AcpiDump: Implemented several new features and fixed some problems: 25641) Added support to dump the RSDP, RSDT, and XSDT tables. 25652) Added support for multiple table instances (SSDT, UEFI). 25663) Added option to dump "customized" (overridden) tables (-c). 25674) Fixed a problem where some table filenames were improperly 2568constructed. 25695) Improved some error messages, removed some unnecessary messages. 2570 2571iASL: Implemented additional support for disassembly of ACPI tables that 2572contain invocations of external control methods. The -fe<file> option 2573allows the import of a file that specifies the external methods along 2574with the required number of arguments for each -- allowing for the 2575correct disassembly of the table. This is a workaround for a limitation 2576of AML code where the disassembler often cannot determine the number of 2577arguments required for an external control method and generates incorrect 2578ASL code. See the iASL reference for details. ACPICA BZ 1030. 2579 2580Debugger: Implemented a new command (paths) that displays the full 2581pathnames (namepaths) and object types of all objects in the namespace. 2582This is an alternative to the namespace command. 2583 2584Debugger: Implemented a new command (sci) that invokes the SCI dispatch 2585mechanism and any installed handlers. 2586 2587iASL: Fixed a possible segfault for "too many parent prefixes" condition. 2588This can occur if there are too many parent prefixes in a namepath (for 2589example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 2590 2591Application OSLs: Set the return value for the PCI read functions. These 2592functions simply return AE_OK, but should set the return value to zero 2593also. This change implements this. ACPICA BZ 1038. 2594 2595Debugger: Prevent possible command line buffer overflow. Increase the 2596size of a couple of the debugger line buffers, and ensure that overflow 2597cannot happen. ACPICA BZ 1037. 2598 2599iASL: Changed to abort immediately on serious errors during the parsing 2600phase. Due to the nature of ASL, there is no point in attempting to 2601compile these types of errors, and they typically end up causing a 2602cascade of hundreds of errors which obscure the original problem. 2603 2604---------------------------------------- 260525 July 2013. Summary of changes for version 20130725: 2606 26071) ACPICA kernel-resident subsystem: 2608 2609Fixed a problem with the DerefOf operator where references to FieldUnits 2610and BufferFields incorrectly returned the parent object, not the actual 2611value of the object. After this change, a dereference of a FieldUnit 2612reference results in a read operation on the field to get the value, and 2613likewise, the appropriate BufferField value is extracted from the target 2614buffer. 2615 2616Fixed a problem where the _WAK method could cause a fault under these 2617circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 2618method returned no value. The problem is rarely seen because most kernels 2619run ACPICA in slack mode. 2620 2621For the DerefOf operator, a fatal error now results if an attempt is made 2622to dereference a reference (created by the Index operator) to a NULL 2623package element. Provides compatibility with other ACPI implementations, 2624and this behavior will be added to a future version of the ACPI 2625specification. 2626 2627The ACPI Power Management Timer (defined in the FADT) is now optional. 2628This provides compatibility with other ACPI implementations and will 2629appear in the next version of the ACPI specification. If there is no PM 2630Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 2631zero in the FADT indicates no PM timer. 2632 2633Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 2634allows the host to globally enable/disable all vendor strings, all 2635feature strings, or both. Intended to be primarily used for debugging 2636purposes only. Lv Zheng. 2637 2638Expose the collected _OSI data to the host via a global variable. This 2639data tracks the highest level vendor ID that has been invoked by the BIOS 2640so that the host (and potentially ACPICA itself) can change behaviors 2641based upon the age of the BIOS. 2642 2643Example Code and Data Size: These are the sizes for the OS-independent 2644acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2645debug version of the code includes the debug output trace mechanism and 2646has a much larger code and data size. 2647 2648 Current Release: 2649 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 2650 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 2651 Previous Release: 2652 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2653 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2654 2655 26562) iASL Compiler/Disassembler and Tools: 2657 2658iASL: Created the following enhancements for the -so option (create 2659offset table): 26601)Add offsets for the last nameseg in each namepath for every supported 2661object type 26622)Add support for Processor, Device, Thermal Zone, and Scope objects 26633)Add the actual AML opcode for the parent object of every supported 2664object type 26654)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 2666 2667Disassembler: Emit all unresolved external symbols in a single block. 2668These are external references to control methods that could not be 2669resolved, and thus, the disassembler had to make a guess at the number of 2670arguments to parse. 2671 2672iASL: The argument to the -T option (create table template) is now 2673optional. If not specified, the default table is a DSDT, typically the 2674most common case. 2675 2676---------------------------------------- 267726 June 2013. Summary of changes for version 20130626: 2678 26791) ACPICA kernel-resident subsystem: 2680 2681Fixed an issue with runtime repair of the _CST object. Null or invalid 2682elements were not always removed properly. Lv Zheng. 2683 2684Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 2685FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 2686the maximum number of GPEs is 1016. Use of multiple GPE block devices 2687makes the system-wide number of GPEs essentially unlimited. 2688 2689Example Code and Data Size: These are the sizes for the OS-independent 2690acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2691debug version of the code includes the debug output trace mechanism and 2692has a much larger code and data size. 2693 2694 Current Release: 2695 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 2696 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 2697 Previous Release: 2698 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2699 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2700 2701 27022) iASL Compiler/Disassembler and Tools: 2703 2704Portable AcpiDump: Implemented full support for the Linux and FreeBSD 2705hosts. Now supports Linux, FreeBSD, and Windows. 2706 2707Disassembler: Added some missing types for the HEST and EINJ tables: "Set 2708Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 2709 2710iASL/Preprocessor: Implemented full support for nested 2711#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 2712 2713Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 2714max. The original purpose of this constraint was to limit the amount of 2715debug output. However, the string function in question (UtPrintString) is 2716now used for the disassembler also, where 256 bytes is insufficient. 2717Reported by RehabMan@GitHub. 2718 2719iASL/DataTables: Fixed some problems and issues with compilation of DMAR 2720tables. ACPICA BZ 999. Lv Zheng. 2721 2722iASL: Fixed a couple of error exit issues that could result in a "Could 2723not delete <file>" message during ASL compilation. 2724 2725AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 2726the actual signatures for these tables are "FACP" and "APIC", 2727respectively. 2728 2729AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 2730tables are allowed to have multiple instances. 2731 2732---------------------------------------- 273317 May 2013. Summary of changes for version 20130517: 2734 27351) ACPICA kernel-resident subsystem: 2736 2737Fixed a regression introduced in version 20130328 for _INI methods. This 2738change fixes a problem introduced in 20130328 where _INI methods are no 2739longer executed properly because of a memory block that was not 2740initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 2741<tomasz.nowicki@linaro.org>. 2742 2743Fixed a possible problem with the new extended sleep registers in the 2744ACPI 27455.0 FADT. Do not use these registers (even if populated) unless the HW- 2746reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 27471020. Lv Zheng. 2748 2749Implemented return value repair code for _CST predefined objects: Sort 2750the 2751list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 2752 2753Implemented a debug-only option to disable loading of SSDTs from the 2754RSDT/XSDT during ACPICA initialization. This can be useful for debugging 2755ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 2756acglobal.h - ACPICA BZ 1005. Lv Zheng. 2757 2758Fixed some issues in the ACPICA initialization and termination code: 2759Tomasz Nowicki <tomasz.nowicki@linaro.org> 27601) Clear events initialized flag upon event component termination. ACPICA 2761BZ 1013. 27622) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 27633) Delete global lock pending lock during termination. ACPICA BZ 1012. 27644) Clear debug buffer global on termination to prevent possible multiple 2765delete. ACPICA BZ 1010. 2766 2767Standardized all switch() blocks across the entire source base. After 2768many 2769years, different formatting for switch() had crept in. This change makes 2770the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 2771 2772Split some files to enhance ACPICA modularity and configurability: 27731) Split buffer dump routines into utilities/utbuffer.c 27742) Split internal error message routines into utilities/uterror.c 27753) Split table print utilities into tables/tbprint.c 27764) Split iASL command-line option processing into asloptions.c 2777 2778Makefile enhancements: 27791) Support for all new files above. 27802) Abort make on errors from any subcomponent. Chao Guan. 27813) Add build support for Apple Mac OS X. Liang Qi. 2782 2783Example Code and Data Size: These are the sizes for the OS-independent 2784acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2785debug version of the code includes the debug output trace mechanism and 2786has a much larger code and data size. 2787 2788 Current Release: 2789 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 2790 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2791 Previous Release: 2792 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2793 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2794 2795 27962) iASL Compiler/Disassembler and Tools: 2797 2798New utility: Implemented an easily portable version of the acpidump 2799utility to extract ACPI tables from the system (or a file) in an ASCII 2800hex 2801dump format. The top-level code implements the various command line 2802options, file I/O, and table dump routines. To port to a new host, only 2803three functions need to be implemented to get tables -- since this 2804functionality is OS-dependent. See the tools/acpidump/apmain.c module and 2805the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 28061) The Windows version obtains the ACPI tables from the Registry. 28072) The Linux version is under development. 28083) Other hosts - If an OS-dependent module is submitted, it will be 2809distributed with ACPICA. 2810 2811iASL: Fixed a regression for -D preprocessor option (define symbol). A 2812restructuring/change to the initialization sequence caused this option to 2813no longer work properly. 2814 2815iASL: Implemented a mechanism to disable specific warnings and remarks. 2816Adds a new command line option, "-vw <messageid> as well as "#pragma 2817disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 2818 2819iASL: Fix for too-strict package object validation. The package object 2820validation for return values from the predefined names is a bit too 2821strict, it does not allow names references within the package (which will 2822be resolved at runtime.) These types of references cannot be validated at 2823compile time. This change ignores named references within package objects 2824for names that return or define static packages. 2825 2826Debugger: Fixed the 80-character command line limitation for the History 2827command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 2828 2829iASL: Added control method and package support for the -so option 2830(generates AML offset table for BIOS support.) 2831 2832iASL: issue a remark if a non-serialized method creates named objects. If 2833a thread blocks within the method for any reason, and another thread 2834enters the method, the method will fail because an attempt will be made 2835to 2836create the same (named) object twice. In this case, issue a remark that 2837the method should be marked serialized. NOTE: may become a warning later. 2838ACPICA BZ 909. 2839 2840---------------------------------------- 284118 April 2013. Summary of changes for version 20130418: 2842 28431) ACPICA kernel-resident subsystem: 2844 2845Fixed a possible buffer overrun during some rare but specific field unit 2846read operations. This overrun can only happen if the DSDT version is 1 -- 2847meaning that all AML integers are 32 bits -- and the field length is 2848between 33 and 55 bits long. During the read, an internal buffer object 2849is 2850created for the field unit because the field is larger than an integer 2851(32 2852bits). However, in this case, the buffer will be incorrectly written 2853beyond the end because the buffer length is less than the internal 2854minimum 2855of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 2856long, but a full 8 bytes will be written. 2857 2858Updated the Embedded Controller "orphan" _REG method support. This refers 2859to _REG methods under the EC device that have no corresponding operation 2860region. This is allowed by the ACPI specification. This update removes a 2861dependency on the existence an ECDT table. It will execute an orphan _REG 2862method as long as the operation region handler for the EC is installed at 2863the EC device node and not the namespace root. Rui Zhang (original 2864update), Bob Moore (update/integrate). 2865 2866Implemented run-time argument typechecking for all predefined ACPI names 2867(_STA, _BIF, etc.) This change performs object typechecking on all 2868incoming arguments for all predefined names executed via 2869AcpiEvaluateObject. This ensures that ACPI-related device drivers are 2870passing correct object types as well as the correct number of arguments 2871(therefore identifying any issues immediately). Also, the ASL/namespace 2872definition of the predefined name is checked against the ACPI 2873specification for the proper argument count. Adds one new file, 2874nsarguments.c 2875 2876Changed an exception code for the ASL UnLoad() operator. Changed the 2877exception code for the case where the input DdbHandle is invalid, from 2878AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 2879 2880Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 2881global makefile. The use of this flag causes compiler errors on earlier 2882versions of GCC, so it has been removed for compatibility. 2883 2884Miscellaneous cleanup: 28851) Removed some unused/obsolete macros 28862) Fixed a possible memory leak in the _OSI support 28873) Removed an unused variable in the predefined name support 28884) Windows OSL: remove obsolete reference to a memory list field 2889 2890Example Code and Data Size: These are the sizes for the OS-independent 2891acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2892debug version of the code includes the debug output trace mechanism and 2893has a much larger code and data size. 2894 2895 Current Release: 2896 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2897 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2898 Previous Release: 2899 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2900 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2901 2902 29032) iASL Compiler/Disassembler and Tools: 2904 2905AcpiExec: Added installation of a handler for the SystemCMOS address 2906space. This prevents control method abort if a method accesses this 2907space. 2908 2909AcpiExec: Added support for multiple EC devices, and now install EC 2910operation region handler(s) at the actual EC device instead of the 2911namespace root. This reflects the typical behavior of host operating 2912systems. 2913 2914AcpiExec: Updated to ensure that all operation region handlers are 2915installed before the _REG methods are executed. This prevents a _REG 2916method from aborting if it accesses an address space has no handler. 2917AcpiExec installs a handler for every possible address space. 2918 2919Debugger: Enhanced the "handlers" command to display non-root handlers. 2920This change enhances the handlers command to display handlers associated 2921with individual devices throughout the namespace, in addition to the 2922currently supported display of handlers associated with the root 2923namespace 2924node. 2925 2926ASL Test Suite: Several test suite errors have been identified and 2927resolved, reducing the total error count during execution. Chao Guan. 2928 2929---------------------------------------- 293028 March 2013. Summary of changes for version 20130328: 2931 29321) ACPICA kernel-resident subsystem: 2933 2934Fixed several possible race conditions with the internal object reference 2935counting mechanism. Some of the external ACPICA interfaces update object 2936reference counts without holding the interpreter or namespace lock. This 2937change adds a spinlock to protect reference count updates on the internal 2938ACPICA objects. Reported by and with assistance from Andriy Gapon 2939(avg@FreeBSD.org). 2940 2941FADT support: Removed an extraneous warning for very large GPE register 2942sets. This change removes a size mismatch warning if the legacy length 2943field for a GPE register set is larger than the 64-bit GAS structure can 2944accommodate. GPE register sets can be larger than the 255-bit width 2945limitation of the GAS structure. Linn Crosetto (linn@hp.com). 2946 2947_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 2948return from this interface. Handles a possible timeout case if 2949ACPI_WAIT_FOREVER is modified by the host to be a value less than 2950"forever". Jung-uk Kim. 2951 2952Predefined name support: Add allowed/required argument type information 2953to 2954the master predefined info table. This change adds the infrastructure to 2955enable typechecking on incoming arguments for all predefined 2956methods/objects. It does not actually contain the code that will fully 2957utilize this information, this is still under development. Also condenses 2958some duplicate code for the predefined names into a new module, 2959utilities/utpredef.c 2960 2961Example Code and Data Size: These are the sizes for the OS-independent 2962acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2963debug version of the code includes the debug output trace mechanism and 2964has a much larger code and data size. 2965 2966 Previous Release: 2967 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2968 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2969 Current Release: 2970 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2971 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2972 2973 29742) iASL Compiler/Disassembler and Tools: 2975 2976iASL: Implemented a new option to simplify the development of ACPI- 2977related 2978BIOS code. Adds support for a new "offset table" output file. The -so 2979option will create a C table containing the AML table offsets of various 2980named objects in the namespace so that BIOS code can modify them easily 2981at 2982boot time. This can simplify BIOS runtime code by eliminating expensive 2983searches for "magic values", enhancing boot times and adding greater 2984reliability. With assistance from Lee Hamel. 2985 2986iASL: Allow additional predefined names to return zero-length packages. 2987Now, all predefined names that are defined by the ACPI specification to 2988return a "variable-length package of packages" are allowed to return a 2989zero length top-level package. This allows the BIOS to tell the host that 2990the requested feature is not supported, and supports existing BIOS/ASL 2991code and practices. 2992 2993iASL: Changed the "result not used" warning to an error. This is the case 2994where an ASL operator is effectively a NOOP because the result of the 2995operation is not stored anywhere. For example: 2996 Add (4, Local0) 2997There is no target (missing 3rd argument), nor is the function return 2998value used. This is potentially a very serious problem -- since the code 2999was probably intended to do something, but for whatever reason, the value 3000was not stored. Therefore, this issue has been upgraded from a warning to 3001an error. 3002 3003AcpiHelp: Added allowable/required argument types to the predefined names 3004info display. This feature utilizes the recent update to the predefined 3005names table (above). 3006 3007---------------------------------------- 300814 February 2013. Summary of changes for version 20130214: 3009 30101) ACPICA Kernel-resident Subsystem: 3011 3012Fixed a possible regression on some hosts: Reinstated the safe return 3013macros (return_ACPI_STATUS, etc.) that ensure that the argument is 3014evaluated only once. Although these macros are not needed for the ACPICA 3015code itself, they are often used by ACPI-related host device drivers 3016where 3017the safe feature may be necessary. 3018 3019Fixed several issues related to the ACPI 5.0 reduced hardware support 3020(SOC): Now ensure that if the platform declares itself as hardware- 3021reduced 3022via the FADT, the following functions become NOOPs (and always return 3023AE_OK) because ACPI is always enabled by definition on these machines: 3024 AcpiEnable 3025 AcpiDisable 3026 AcpiHwGetMode 3027 AcpiHwSetMode 3028 3029Dynamic Object Repair: Implemented additional runtime repairs for 3030predefined name return values. Both of these repairs can simplify code in 3031the related device drivers that invoke these methods: 30321) For the _STR and _MLS names, automatically repair/convert an ASCII 3033string to a Unicode buffer. 30342) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 3035a 3036lone end tag descriptor in the following cases: A Return(0) was executed, 3037a null buffer was returned, or no object at all was returned (non-slack 3038mode only). Adds a new file, nsconvert.c 3039ACPICA BZ 998. Bob Moore, Lv Zheng. 3040 3041Resource Manager: Added additional code to prevent possible infinite 3042loops 3043while traversing corrupted or ill-formed resource template buffers. Check 3044for zero-length resource descriptors in all code that loops through 3045resource templates (the length field is used to index through the 3046template). This change also hardens the external AcpiWalkResources and 3047AcpiWalkResourceBuffer interfaces. 3048 3049Local Cache Manager: Enhanced the main data structure to eliminate an 3050unnecessary mechanism to access the next object in the list. Actually 3051provides a small performance enhancement for hosts that use the local 3052ACPICA cache manager. Jung-uk Kim. 3053 3054Example Code and Data Size: These are the sizes for the OS-independent 3055acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3056debug version of the code includes the debug output trace mechanism and 3057has a much larger code and data size. 3058 3059 Previous Release: 3060 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3061 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3062 Current Release: 3063 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 3064 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 3065 3066 30672) iASL Compiler/Disassembler and Tools: 3068 3069iASL/Disassembler: Fixed several issues with the definition of the ACPI 30705.0 RASF table (RAS Feature Table). This change incorporates late changes 3071that were made to the ACPI 5.0 specification. 3072 3073iASL/Disassembler: Added full support for the following new ACPI tables: 3074 1) The MTMR table (MID Timer Table) 3075 2) The VRTC table (Virtual Real Time Clock Table). 3076Includes header file, disassembler, table compiler, and template support 3077for both tables. 3078 3079iASL: Implemented compile-time validation of package objects returned by 3080predefined names. This new feature validates static package objects 3081returned by the various predefined names defined to return packages. Both 3082object types and package lengths are validated, for both parent packages 3083and sub-packages, if any. The code is similar in structure and behavior 3084to 3085the runtime repair mechanism within the AML interpreter and uses the 3086existing predefined name information table. Adds a new file, aslprepkg.c. 3087ACPICA BZ 938. 3088 3089iASL: Implemented auto-detection of binary ACPI tables for disassembly. 3090This feature detects a binary file with a valid ACPI table header and 3091invokes the disassembler automatically. Eliminates the need to 3092specifically invoke the disassembler with the -d option. ACPICA BZ 862. 3093 3094iASL/Disassembler: Added several warnings for the case where there are 3095unresolved control methods during the disassembly. This can potentially 3096cause errors when the output file is compiled, because the disassembler 3097assumes zero method arguments in these cases (it cannot determine the 3098actual number of arguments without resolution/definition of the method). 3099 3100Debugger: Added support to display all resources with a single command. 3101Invocation of the resources command with no arguments will now display 3102all 3103resources within the current namespace. 3104 3105AcpiHelp: Added descriptive text for each ACPICA exception code displayed 3106via the -e option. 3107 3108---------------------------------------- 310917 January 2013. Summary of changes for version 20130117: 3110 31111) ACPICA Kernel-resident Subsystem: 3112 3113Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 3114return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 3115objects to return a package containing one integer, most BIOS code 3116returns 3117two integers and the previous code reflects that. However, we also need 3118to 3119support BIOS code that actually implements to the ACPI spec, and this 3120change reflects this. 3121 3122Fixed two issues with the ACPI_DEBUG_PRINT macros: 31231) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 3124C compilers that require this support. 31252) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 3126ACPI_DEBUG is already used by many of the various hosts. 3127 3128Updated all ACPICA copyrights and signons to 2013. Added the 2013 3129copyright to all module headers and signons, including the standard Linux 3130header. This affects virtually every file in the ACPICA core subsystem, 3131iASL compiler, all ACPICA utilities, and the test suites. 3132 3133Example Code and Data Size: These are the sizes for the OS-independent 3134acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3135debug version of the code includes the debug output trace mechanism and 3136has a much larger code and data size. 3137 3138 Previous Release: 3139 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3140 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3141 Current Release: 3142 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 3143 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 3144 3145 31462) iASL Compiler/Disassembler and Tools: 3147 3148Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 3149prevent a possible fault on some hosts. Some C libraries modify the arg 3150pointer parameter to vfprintf making it difficult to call it twice in the 3151AcpiOsVprintf function. Use a local buffer to workaround this issue. This 3152does not affect the Windows OSL since the Win C library does not modify 3153the arg pointer. Chao Guan, Bob Moore. 3154 3155iASL: Fixed a possible infinite loop when the maximum error count is 3156reached. If an output file other than the .AML file is specified (such as 3157a listing file), and the maximum number of errors is reached, do not 3158attempt to flush data to the output file(s) as the compiler is aborting. 3159This can cause an infinite loop as the max error count code essentially 3160keeps calling itself. 3161 3162iASL/Disassembler: Added an option (-in) to ignore NOOP 3163opcodes/operators. 3164Implemented for both the compiler and the disassembler. Often, the NOOP 3165opcode is used as padding for packages that are changed dynamically by 3166the 3167BIOS. When disassembled and recompiled, these NOOPs will cause syntax 3168errors. This option causes the disassembler to ignore all NOOP opcodes 3169(0xA3), and it also causes the compiler to ignore all ASL source code 3170NOOP 3171statements as well. 3172 3173Debugger: Enhanced the Sleep command to execute all sleep states. This 3174change allows Sleep to be invoked with no arguments and causes the 3175debugger to execute all of the sleep states, 0-5, automatically. 3176 3177---------------------------------------- 317820 December 2012. Summary of changes for version 20121220: 3179 31801) ACPICA Kernel-resident Subsystem: 3181 3182Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 3183alternate entry point for AcpiWalkResources and improves the usability of 3184the resource manager by accepting as input a buffer containing the output 3185of either a _CRS, _PRS, or _AEI method. The key functionality is that the 3186input buffer is not deleted by this interface so that it can be used by 3187the host later. See the ACPICA reference for details. 3188 3189Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 3190(DSDT version < 2). The constant will be truncated and this warning 3191reflects that behavior. 3192 3193Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 3194ExtendedInterrupt, and GpioInt descriptors. This change adds support to 3195both get and set the new wake bit in these descriptors, separately from 3196the existing share bit. Reported by Aaron Lu. 3197 3198Interpreter: Fix Store() when an implicit conversion is not possible. For 3199example, in the cases such as a store of a string to an existing package 3200object, implement the store as a CopyObject(). This is a small departure 3201from the ACPI specification which states that the control method should 3202be 3203aborted in this case. However, the ASLTS suite depends on this behavior. 3204 3205Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 3206macros: check if debug output is currently enabled as soon as possible to 3207minimize performance impact if debug is in fact not enabled. 3208 3209Source code restructuring: Cleanup to improve modularity. The following 3210new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 3211psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 3212Associated makefiles and project files have been updated. 3213 3214Changed an exception code for LoadTable operator. For the case where one 3215of the input strings is too long, change the returned exception code from 3216AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 3217 3218Fixed a possible memory leak in dispatcher error path. On error, delete 3219the mutex object created during method mutex creation. Reported by 3220tim.gardner@canonical.com. 3221 3222Example Code and Data Size: These are the sizes for the OS-independent 3223acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3224debug version of the code includes the debug output trace mechanism and 3225has a much larger code and data size. 3226 3227 Previous Release: 3228 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3229 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3230 Current Release: 3231 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 3232 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 3233 3234 32352) iASL Compiler/Disassembler and Tools: 3236 3237iASL: Disallow a method call as argument to the ObjectType ASL operator. 3238This change tracks an errata to the ACPI 5.0 document. The AML grammar 3239will not allow the interpreter to differentiate between a method and a 3240method invocation when these are used as an argument to the ObjectType 3241operator. The ACPI specification change is to disallow a method 3242invocation 3243(UserTerm) for the ObjectType operator. 3244 3245Finish support for the TPM2 and CSRT tables in the headers, table 3246compiler, and disassembler. 3247 3248Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 3249always expires immediately if the semaphore is not available. The 3250original 3251code was using a relative-time timeout, but sem_timedwait requires the 3252use 3253of an absolute time. 3254 3255iASL: Added a remark if the Timer() operator is used within a 32-bit 3256table. This operator returns a 64-bit time value that will be truncated 3257within a 32-bit table. 3258 3259iASL Source code restructuring: Cleanup to improve modularity. The 3260following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 3261aslmethod.c, and aslfileio.c. Associated makefiles and project files have 3262been updated. 3263 3264 3265---------------------------------------- 326614 November 2012. Summary of changes for version 20121114: 3267 32681) ACPICA Kernel-resident Subsystem: 3269 3270Implemented a performance enhancement for ACPI/AML Package objects. This 3271change greatly increases the performance of Package objects within the 3272interpreter. It changes the processing of reference counts for packages 3273by 3274optimizing for the most common case where the package sub-objects are 3275either Integers, Strings, or Buffers. Increases the overall performance 3276of 3277the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 32782X.) 3279Chao Guan. ACPICA BZ 943. 3280 3281Implemented and deployed common macros to extract flag bits from resource 3282descriptors. Improves readability and maintainability of the code. Fixes 3283a 3284problem with the UART serial bus descriptor for the number of data bits 3285flags (was incorrectly 2 bits, should be 3). 3286 3287Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 3288of the macros and changed the SETx macros to the style of (destination, 3289source). Also added ACPI_CASTx companion macros. Lv Zheng. 3290 3291Example Code and Data Size: These are the sizes for the OS-independent 3292acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3293debug version of the code includes the debug output trace mechanism and 3294has a much larger code and data size. 3295 3296 Previous Release: 3297 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3298 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3299 Current Release: 3300 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 3301 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3302 3303 33042) iASL Compiler/Disassembler and Tools: 3305 3306Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 3307adds the ShareAndWake and ExclusiveAndWake flags which were added to the 3308Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 3309 3310Disassembler: Fixed a problem with external declaration generation. Fixes 3311a problem where an incorrect pathname could be generated for an external 3312declaration if the original reference to the object includes leading 3313carats (^). ACPICA BZ 984. 3314 3315Debugger: Completed a major update for the Disassemble<method> command. 3316This command was out-of-date and did not properly disassemble control 3317methods that had any reasonable complexity. This fix brings the command 3318up 3319to the same level as the rest of the disassembler. Adds one new file, 3320dmdeferred.c, which is existing code that is now common with the main 3321disassembler and the debugger disassemble command. ACPICA MZ 978. 3322 3323iASL: Moved the parser entry prototype to avoid a duplicate declaration. 3324Newer versions of Bison emit this prototype, so moved the prototype out 3325of 3326the iASL header to where it is actually used in order to avoid a 3327duplicate 3328declaration. 3329 3330iASL/Tools: Standardized use of the stream I/O functions: 3331 1) Ensure check for I/O error after every fopen/fread/fwrite 3332 2) Ensure proper order of size/count arguments for fread/fwrite 3333 3) Use test of (Actual != Requested) after all fwrite, and most fread 3334 4) Standardize I/O error messages 3335Improves reliability and maintainability of the code. Bob Moore, Lv 3336Zheng. 3337ACPICA BZ 981. 3338 3339Disassembler: Prevent duplicate External() statements. During generation 3340of external statements, detect similar pathnames that are actually 3341duplicates such as these: 3342 External (\ABCD) 3343 External (ABCD) 3344Remove all leading '\' characters from pathnames during the external 3345statement generation so that duplicates will be detected and tossed. 3346ACPICA BZ 985. 3347 3348Tools: Replace low-level I/O with stream I/O functions. Replace 3349open/read/write/close with the stream I/O equivalents 3350fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 3351Moore. 3352 3353AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 3354name header so that AcpiXtract recognizes the output file/table. 3355 3356iASL: Remove obsolete -2 option flag. Originally intended to force the 3357compiler/disassembler into an ACPI 2.0 mode, this was never implemented 3358and the entire concept is now obsolete. 3359 3360---------------------------------------- 336118 October 2012. Summary of changes for version 20121018: 3362 3363 33641) ACPICA Kernel-resident Subsystem: 3365 3366Updated support for the ACPI 5.0 MPST table. Fixes some problems 3367introduced by late changes to the table as it was added to the ACPI 5.0 3368specification. Includes header, disassembler, and data table compiler 3369support as well as a new version of the MPST template. 3370 3371AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 33725.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 3373methods: _HID, _CID, and _UID. 3374 3375Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 3376ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 3377name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 3378names for their various drivers. Affects the AcpiGetObjectInfo external 3379interface, and other internal interfaces as well. 3380 3381Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 3382This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 3383on machines that support non-aligned transfers. Optimizes for this case 3384rather than using a strncpy. With assistance from Zheng Lv. 3385 3386Resource Manager: Small fix for buffer size calculation. Fixed a one byte 3387error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 3388 3389Added a new debug print message for AML mutex objects that are force- 3390released. At control method termination, any currently acquired mutex 3391objects are force-released. Adds a new debug-only message for each one 3392that is released. 3393 3394Audited/updated all ACPICA return macros and the function debug depth 3395counter: 1) Ensure that all functions that use the various TRACE macros 3396also use the appropriate ACPICA return macros. 2) Ensure that all normal 3397return statements surround the return expression (value) with parens to 3398ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 3399Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 3400 3401Global source code changes/maintenance: All extra lines at the start and 3402end of each source file have been removed for consistency. Also, within 3403comments, all new sentences start with a single space instead of a double 3404space, again for consistency across the code base. 3405 3406Example Code and Data Size: These are the sizes for the OS-independent 3407acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3408debug version of the code includes the debug output trace mechanism and 3409has a much larger code and data size. 3410 3411 Previous Release: 3412 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3413 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3414 Current Release: 3415 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 3416 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 3417 3418 34192) iASL Compiler/Disassembler and Tools: 3420 3421AcpiExec: Improved the algorithm used for memory leak/corruption 3422detection. Added some intelligence to the code that maintains the global 3423list of allocated memory. The list is now ordered by allocated memory 3424address, significantly improving performance. When running AcpiExec on 3425the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 3426on the platform and/or the environment. Note, this performance 3427enhancement affects the AcpiExec utility only, not the kernel-resident 3428ACPICA code. 3429 3430Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 3431the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 3432incorrect table offset reported for invalid opcodes. Report the original 343332-bit value for bad ACPI_NAMEs (as well as the repaired name.) 3434 3435Disassembler: Enhanced the -vt option to emit the binary table data in 3436hex format to assist with debugging. 3437 3438Fixed a potential filename buffer overflow in osunixdir.c. Increased the 3439size of file structure. Colin Ian King. 3440 3441---------------------------------------- 344213 September 2012. Summary of changes for version 20120913: 3443 3444 34451) ACPICA Kernel-resident Subsystem: 3446 3447ACPI 5.0: Added two new notify types for the Hardware Error Notification 3448Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 3449and 3450MCE(6). 3451 3452Table Manager: Merged/removed duplicate code in the root table resize 3453functions. One function is external, the other is internal. Lv Zheng, 3454ACPICA 3455BZ 846. 3456 3457Makefiles: Completely removed the obsolete "Linux" makefiles under 3458acpica/generate/linux. These makefiles are obsolete and have been 3459replaced 3460by 3461the generic unix makefiles under acpica/generate/unix. 3462 3463Makefiles: Ensure that binary files always copied properly. Minor rule 3464change 3465to ensure that the final binary output files are always copied up to the 3466appropriate binary directory (bin32 or bin64.) 3467 3468Example Code and Data Size: These are the sizes for the OS-independent 3469acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3470debug 3471version of the code includes the debug output trace mechanism and has a 3472much 3473larger code and data size. 3474 3475 Previous Release: 3476 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3477 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3478 Current Release: 3479 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 3480 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 3481 3482 34832) iASL Compiler/Disassembler and Tools: 3484 3485Disassembler: Fixed a possible fault during the disassembly of resource 3486descriptors when a second parse is required because of the invocation of 3487external control methods within the table. With assistance from 3488adq@lidskialf.net. ACPICA BZ 976. 3489 3490iASL: Fixed a namepath optimization problem. An error can occur if the 3491parse 3492node that contains the namepath to be optimized does not have a parent 3493node 3494that is a named object. This change fixes the problem. 3495 3496iASL: Fixed a regression where the AML file is not deleted on errors. The 3497AML 3498output file should be deleted if there are any errors during the 3499compiler. 3500The 3501only exception is if the -f (force output) option is used. ACPICA BZ 974. 3502 3503iASL: Added a feature to automatically increase internal line buffer 3504sizes. 3505Via realloc(), automatically increase the internal line buffer sizes as 3506necessary to support very long source code lines. The current version of 3507the 3508preprocessor requires a buffer long enough to contain full source code 3509lines. 3510This change increases the line buffer(s) if the input lines go beyond the 3511current buffer size. This eliminates errors that occurred when a source 3512code 3513line was longer than the buffer. 3514 3515iASL: Fixed a problem with constant folding in method declarations. The 3516SyncLevel term is a ByteConstExpr, and incorrect code would be generated 3517if a 3518Type3 opcode was used. 3519 3520Debugger: Improved command help support. For incorrect argument count, 3521display 3522full help for the command. For help command itself, allow an argument to 3523specify a command. 3524 3525Test Suites: Several bug fixes for the ASLTS suite reduces the number of 3526errors during execution of the suite. Guan Chao. 3527 3528---------------------------------------- 352916 August 2012. Summary of changes for version 20120816: 3530 3531 35321) ACPICA Kernel-resident Subsystem: 3533 3534Removed all use of the deprecated _GTS and _BFS predefined methods. The 3535_GTS 3536(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 3537deprecated and will probably be removed from the ACPI specification. 3538Windows 3539does not invoke them, and reportedly never will. The final nail in the 3540coffin 3541is that the ACPI specification states that these methods must be run with 3542interrupts off, which is not going to happen in a kernel interpreter. 3543Note: 3544Linux has removed all use of the methods also. It was discovered that 3545invoking these functions caused failures on some machines, probably 3546because 3547they were never tested since Windows does not call them. Affects two 3548external 3549interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 3550ACPICA BZ 969. 3551 3552Implemented support for complex bit-packed buffers returned from the _PLD 3553(Physical Location of Device) predefined method. Adds a new external 3554interface, AcpiDecodePldBuffer that parses the buffer into a more usable 3555C 3556structure. Note: C Bitfields cannot be used for this type of predefined 3557structure since the memory layout of individual bitfields is not defined 3558by 3559the C language. In addition, there are endian concerns where a compiler 3560will 3561change the bitfield ordering based on the machine type. The new ACPICA 3562interface eliminates these issues, and should be called after _PLD is 3563executed. ACPICA BZ 954. 3564 3565Implemented a change to allow a scope change to root (via "Scope (\)") 3566during 3567execution of module-level ASL code (code that is executed at table load 3568time.) Lin Ming. 3569 3570Added the Windows8/Server2012 string for the _OSI method. This change 3571adds 3572a 3573new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 35742012. 3575 3576Added header support for the new ACPI tables DBG2 (Debug Port Table Type 35772) 3578and CSRT (Core System Resource Table). 3579 3580Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 3581names. This simplifies access to the buffers returned by these predefined 3582names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 3583 3584GPE support: Removed an extraneous parameter from the various low-level 3585internal GPE functions. Tang Feng. 3586 3587Removed the linux makefiles from the unix packages. The generate/linux 3588makefiles are obsolete and have been removed from the unix tarball 3589release 3590packages. The replacement makefiles are under generate/unix, and there is 3591a 3592top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 3593 3594Updates for Unix makefiles: 35951) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 35962) Update linker flags (move to end of command line) for AcpiExec 3597utility. 3598Guan Chao. 3599 3600Split ACPICA initialization functions to new file, utxfinit.c. Split from 3601utxface.c to improve modularity and reduce file size. 3602 3603Example Code and Data Size: These are the sizes for the OS-independent 3604acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3605debug version of the code includes the debug output trace mechanism and 3606has a 3607much larger code and data size. 3608 3609 Previous Release: 3610 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3611 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3612 Current Release: 3613 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 3614 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 3615 3616 36172) iASL Compiler/Disassembler and Tools: 3618 3619iASL: Fixed a problem with constant folding for fixed-length constant 3620expressions. The constant-folding code was not being invoked for constant 3621expressions that allow the use of type 3/4/5 opcodes to generate 3622constants 3623for expressions such as ByteConstExpr, WordConstExpr, etc. This could 3624result 3625in the generation of invalid AML bytecode. ACPICA BZ 970. 3626 3627iASL: Fixed a generation issue on newer versions of Bison. Newer versions 3628apparently automatically emit some of the necessary externals. This 3629change 3630handles these versions in order to eliminate generation warnings. 3631 3632Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 3633 3634Disassembler: Add support to decode _PLD buffers. The decoded buffer 3635appears 3636within comments in the output file. 3637 3638Debugger: Fixed a regression with the "Threads" command where 3639AE_BAD_PARAMETER was always returned. 3640 3641---------------------------------------- 364211 July 2012. Summary of changes for version 20120711: 3643 36441) ACPICA Kernel-resident Subsystem: 3645 3646Fixed a possible fault in the return package object repair code. Fixes a 3647problem that can occur when a lone package object is wrapped with an 3648outer 3649package object in order to force conformance to the ACPI specification. 3650Can 3651affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 3652_DLM, 3653_CSD, _PSD, _TSD. 3654 3655Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 3656PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 3657ARB_DIS bit must be implemented in the host-dependent C3 processor power 3658state 3659support. Note, ARB_DIS is obsolete and only applies to older chipsets, 3660both 3661Intel and other vendors. (for Intel: ICH4-M and earlier) 3662 3663This change removes the code to disable/enable bus master arbitration 3664during 3665suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 3666causes 3667resume problems on some machines. The change has been in use for over 3668seven 3669years within Linux. 3670 3671Implemented two new external interfaces to support host-directed dynamic 3672ACPI 3673table load and unload. They are intended to simplify the host 3674implementation 3675of hot-plug support: 3676 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 3677 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 3678table. 3679See the ACPICA reference for additional details. Adds one new file, 3680components/tables/tbxfload.c 3681 3682Implemented and deployed two new interfaces for errors and warnings that 3683are 3684known to be caused by BIOS/firmware issues: 3685 AcpiBiosError: Prints "ACPI Firmware Error" message. 3686 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 3687Deployed these new interfaces in the ACPICA Table Manager code for ACPI 3688table 3689and FADT errors. Additional deployment to be completed as appropriate in 3690the 3691future. The associated conditional macros are ACPI_BIOS_ERROR and 3692ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 3693ACPICA 3694BZ 3695843. 3696 3697Implicit notify support: ensure that no memory allocation occurs within a 3698critical region. This fix moves a memory allocation outside of the time 3699that a 3700spinlock is held. Fixes issues on systems that do not allow this 3701behavior. 3702Jung-uk Kim. 3703 3704Split exception code utilities and tables into a new file, 3705utilities/utexcep.c 3706 3707Example Code and Data Size: These are the sizes for the OS-independent 3708acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3709debug 3710version of the code includes the debug output trace mechanism and has a 3711much 3712larger code and data size. 3713 3714 Previous Release: 3715 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3716 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3717 Current Release: 3718 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 3719 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 3720 3721 37222) iASL Compiler/Disassembler and Tools: 3723 3724iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 3725of 37260. Jung-uk Kim. 3727 3728Debugger: Enhanced the "tables" command to emit additional information 3729about 3730the current set of ACPI tables, including the owner ID and flags decode. 3731 3732Debugger: Reimplemented the "unload" command to use the new 3733AcpiUnloadParentTable external interface. This command was disable 3734previously 3735due to need for an unload interface. 3736 3737AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 3738option 3739will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 3740 3741---------------------------------------- 374220 June 2012. Summary of changes for version 20120620: 3743 3744 37451) ACPICA Kernel-resident Subsystem: 3746 3747Implemented support to expand the "implicit notify" feature to allow 3748multiple 3749devices to be notified by a single GPE. This feature automatically 3750generates a 3751runtime device notification in the absence of a BIOS-provided GPE control 3752method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 3753notify is 3754provided by ACPICA for Windows compatibility, and is a workaround for 3755BIOS 3756AML 3757code errors. See the description of the AcpiSetupGpeForWake interface in 3758the 3759APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 3760 3761Changed some comments and internal function names to simplify and ensure 3762correctness of the Linux code translation. No functional changes. 3763 3764Example Code and Data Size: These are the sizes for the OS-independent 3765acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3766debug 3767version of the code includes the debug output trace mechanism and has a 3768much 3769larger code and data size. 3770 3771 Previous Release: 3772 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3773 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3774 Current Release: 3775 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 3776 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 3777 3778 37792) iASL Compiler/Disassembler and Tools: 3780 3781Disassembler: Added support to emit short, commented descriptions for the 3782ACPI 3783predefined names in order to improve the readability of the disassembled 3784output. ACPICA BZ 959. Changes include: 3785 1) Emit descriptions for all standard predefined names (_INI, _STA, 3786_PRW, 3787etc.) 3788 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 3789 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 3790etc.) 3791 3792AcpiSrc: Fixed several long-standing Linux code translation issues. 3793Argument 3794descriptions in function headers are now translated properly to lower 3795case 3796and 3797underscores. ACPICA BZ 961. Also fixes translation problems such as 3798these: 3799(old -> new) 3800 i_aSL -> iASL 3801 00-7_f -> 00-7F 3802 16_k -> 16K 3803 local_fADT -> local_FADT 3804 execute_oSI -> execute_OSI 3805 3806iASL: Fixed a problem where null bytes were inadvertently emitted into 3807some 3808listing files. 3809 3810iASL: Added the existing debug options to the standard help screen. There 3811are 3812no longer two different help screens. ACPICA BZ 957. 3813 3814AcpiHelp: Fixed some typos in the various predefined name descriptions. 3815Also 3816expand some of the descriptions where appropriate. 3817 3818iASL: Fixed the -ot option (display compile times/statistics). Was not 3819working 3820properly for standard output; only worked for the debug file case. 3821 3822---------------------------------------- 382318 May 2012. Summary of changes for version 20120518: 3824 3825 38261) ACPICA Core Subsystem: 3827 3828Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 3829defined 3830to block until asynchronous events such as notifies and GPEs have 3831completed. 3832Within ACPICA, it is only called before a notify or GPE handler is 3833removed/uninstalled. It also may be useful for the host OS within related 3834drivers such as the Embedded Controller driver. See the ACPICA reference 3835for 3836additional information. ACPICA BZ 868. 3837 3838ACPI Tables: Added a new error message for a possible overflow failure 3839during 3840the conversion of FADT 32-bit legacy register addresses to internal 3841common 384264- 3843bit GAS structure representation. The GAS has a one-byte "bit length" 3844field, 3845thus limiting the register length to 255 bits. ACPICA BZ 953. 3846 3847Example Code and Data Size: These are the sizes for the OS-independent 3848acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3849debug 3850version of the code includes the debug output trace mechanism and has a 3851much 3852larger code and data size. 3853 3854 Previous Release: 3855 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3856 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3857 Current Release: 3858 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3859 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3860 3861 38622) iASL Compiler/Disassembler and Tools: 3863 3864iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 3865macro. 3866This keyword was added late in the ACPI 5.0 release cycle and was not 3867implemented until now. 3868 3869Disassembler: Added support for Operation Region externals. Adds missing 3870support for operation regions that are defined in another table, and 3871referenced locally via a Field or BankField ASL operator. Now generates 3872the 3873correct External statement. 3874 3875Disassembler: Several additional fixes for the External() statement 3876generation 3877related to some ASL operators. Also, order the External() statements 3878alphabetically in the disassembler output. Fixes the External() 3879generation 3880for 3881the Create* field, Alias, and Scope operators: 3882 1) Create* buffer field operators - fix type mismatch warning on 3883disassembly 3884 2) Alias - implement missing External support 3885 3) Scope - fix to make sure all necessary externals are emitted. 3886 3887iASL: Improved pathname support. For include files, merge the prefix 3888pathname 3889with the file pathname and eliminate unnecessary components. Convert 3890backslashes in all pathnames to forward slashes, for readability. Include 3891file 3892pathname changes affect both #include and Include() type operators. 3893 3894iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 3895end 3896of a valid line by inserting a newline and then returning the EOF during 3897the 3898next call to GetNextLine. Prevents the line from being ignored due to EOF 3899condition. 3900 3901iASL: Implemented some changes to enhance the IDE support (-vi option.) 3902Error 3903and Warning messages are now correctly recognized for both the source 3904code 3905browser and the global error and warning counts. 3906 3907---------------------------------------- 390820 April 2012. Summary of changes for version 20120420: 3909 3910 39111) ACPICA Core Subsystem: 3912 3913Implemented support for multiple notify handlers. This change adds 3914support 3915to 3916allow multiple system and device notify handlers on Device, Thermal Zone, 3917and 3918Processor objects. This can simplify the host OS notification 3919implementation. 3920Also re-worked and restructured the entire notify support code to 3921simplify 3922handler installation, handler removal, notify event queuing, and notify 3923dispatch to handler(s). Note: there can still only be two global notify 3924handlers - one for system notifies and one for device notifies. There are 3925no 3926changes to the existing handler install/remove interfaces. Lin Ming, Bob 3927Moore, Rafael Wysocki. 3928 3929Fixed a regression in the package repair code where the object reference 3930count was calculated incorrectly. Regression was introduced in the commit 3931"Support to add Package wrappers". 3932 3933Fixed a couple possible memory leaks in the AML parser, in the error 3934recovery 3935path. Jesper Juhl, Lin Ming. 3936 3937Example Code and Data Size: These are the sizes for the OS-independent 3938acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3939debug version of the code includes the debug output trace mechanism and 3940has a 3941much larger code and data size. 3942 3943 Previous Release: 3944 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3945 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3946 Current Release: 3947 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3948 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3949 3950 39512) iASL Compiler/Disassembler and Tools: 3952 3953iASL: Fixed a problem with the resource descriptor support where the 3954length 3955of the StartDependentFn and StartDependentFnNoPrio descriptors were not 3956included in cumulative descriptor offset, resulting in incorrect values 3957for 3958resource tags within resource descriptors appearing after a 3959StartDependent* 3960descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 3961 3962iASL and Preprocessor: Implemented full support for the #line directive 3963to 3964correctly track original source file line numbers through the .i 3965preprocessor 3966output file - for error and warning messages. 3967 3968iASL: Expand the allowable byte constants for address space IDs. 3969Previously, 3970the allowable range was 0x80-0xFF (user-defined spaces), now the range is 39710x0A-0xFF to allow for custom and new IDs without changing the compiler. 3972 3973iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 3974 3975iASL: Add option to completely disable the preprocessor (-Pn). 3976 3977iASL: Now emit all error/warning messages to standard error (stderr) by 3978default (instead of the previous stdout). 3979 3980ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 3981Update 3982for resource descriptor offset fix above. Update/cleanup error output 3983routines. Enable and send iASL errors/warnings to an error logfile 3984(error.txt). Send all other iASL output to a logfile (compiler.txt). 3985Fixed 3986several extraneous "unrecognized operator" messages. 3987 3988---------------------------------------- 398920 March 2012. Summary of changes for version 20120320: 3990 3991 39921) ACPICA Core Subsystem: 3993 3994Enhanced the sleep/wake interfaces to optionally execute the _GTS method 3995(Going To Sleep) and the _BFS method (Back From Sleep). Windows 3996apparently 3997does not execute these methods, and therefore these methods are often 3998untested. It has been seen on some systems where the execution of these 3999methods causes errors and also prevents the machine from entering S5. It 4000is 4001therefore suggested that host operating systems do not execute these 4002methods 4003by default. In the future, perhaps these methods can be optionally 4004executed 4005based on the age of the system and/or what is the newest version of 4006Windows 4007that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 4008and 4009AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 4010Ming. 4011 4012Fixed a problem where the length of the local/common FADT was set too 4013early. 4014The local FADT table length cannot be set to the common length until the 4015original length has been examined. There is code that checks the table 4016length 4017and sets various fields appropriately. This can affect older machines 4018with 4019early FADT versions. For example, this can cause inadvertent writes to 4020the 4021CST_CNT register. Julian Anastasov. 4022 4023Fixed a mapping issue related to a physical table override. Use the 4024deferred 4025mapping mechanism for tables loaded via the physical override OSL 4026interface. 4027This allows for early mapping before the virtual memory manager is 4028available. 4029Thomas Renninger, Bob Moore. 4030 4031Enhanced the automatic return-object repair code: Repair a common problem 4032with 4033predefined methods that are defined to return a variable-length Package 4034of 4035sub-objects. If there is only one sub-object, some BIOS ASL code 4036mistakenly 4037simply returns the single object instead of a Package with one sub- 4038object. 4039This new support will repair this error by wrapping a Package object 4040around 4041the original object, creating the correct and expected Package with one 4042sub- 4043object. Names that can be repaired in this manner include: _ALR, _CSD, 4044_HPX, 4045_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 4046939. 4047 4048Changed the exception code returned for invalid ACPI paths passed as 4049parameters to external interfaces such as AcpiEvaluateObject. Was 4050AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 4051 4052Example Code and Data Size: These are the sizes for the OS-independent 4053acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4054debug 4055version of the code includes the debug output trace mechanism and has a 4056much 4057larger code and data size. 4058 4059 Previous Release: 4060 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4061 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4062 Current Release: 4063 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 4064 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4065 4066 40672) iASL Compiler/Disassembler and Tools: 4068 4069iASL: Added the infrastructure and initial implementation of a integrated 4070C- 4071like preprocessor. This will simplify BIOS development process by 4072eliminating 4073the need for a separate preprocessing step during builds. On Windows, it 4074also 4075eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 4076features including full #define() macro support are still under 4077development. 4078These preprocessor directives are supported: 4079 #define 4080 #elif 4081 #else 4082 #endif 4083 #error 4084 #if 4085 #ifdef 4086 #ifndef 4087 #include 4088 #pragma message 4089 #undef 4090 #warning 4091In addition, these new command line options are supported: 4092 -D <symbol> Define symbol for preprocessor use 4093 -li Create preprocessed output file (*.i) 4094 -P Preprocess only and create preprocessor output file (*.i) 4095 4096Table Compiler: Fixed a problem where the equals operator within an 4097expression 4098did not work properly. 4099 4100Updated iASL to use the current versions of Bison/Flex. Updated the 4101Windows 4102project file to invoke these tools from the standard location. ACPICA BZ 4103904. 4104Versions supported: 4105 Flex for Windows: V2.5.4 4106 Bison for Windows: V2.4.1 4107 4108---------------------------------------- 410915 February 2012. Summary of changes for version 20120215: 4110 4111 41121) ACPICA Core Subsystem: 4113 4114There have been some major changes to the sleep/wake support code, as 4115described below (a - e). 4116 4117a) The AcpiLeaveSleepState has been split into two interfaces, similar to 4118AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 4119AcpiLeaveSleepStatePrep. This allows the host to perform actions between 4120the 4121time the _BFS method is called and the _WAK method is called. NOTE: all 4122hosts 4123must update their wake/resume code or else sleep/wake will not work 4124properly. 4125Rafael Wysocki. 4126 4127b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 4128_WAK 4129method. Some machines require that the GPEs are enabled before the _WAK 4130method 4131is executed. Thomas Renninger. 4132 4133c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 4134bit. 4135Some BIOS code assumes that WAK_STS will be cleared on resume and use it 4136to 4137determine whether the system is rebooting or resuming. Matthew Garrett. 4138 4139d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 4140Sleep) to 4141match the ACPI specification requirement. Rafael Wysocki. 4142 4143e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 4144registers within the V5 FADT. This support adds two new files: 4145hardware/hwesleep.c implements the support for the new registers. Moved 4146all 4147sleep/wake external interfaces to hardware/hwxfsleep.c. 4148 4149 4150Added a new OSL interface for ACPI table overrides, 4151AcpiOsPhysicalTableOverride. This interface allows the host to override a 4152table via a physical address, instead of the logical address required by 4153AcpiOsTableOverride. This simplifies the host implementation. Initial 4154implementation by Thomas Renninger. The ACPICA implementation creates a 4155single 4156shared function for table overrides that attempts both a logical and a 4157physical override. 4158 4159Expanded the OSL memory read/write interfaces to 64-bit data 4160(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 4161transfer support for GAS register structures passed to AcpiRead and 4162AcpiWrite. 4163 4164Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 4165custom 4166build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 4167model. 4168See the ACPICA reference for details. ACPICA BZ 942. This option removes 4169about 417010% of the code and 5% of the static data, and the following hardware 4171ACPI 4172features become unavailable: 4173 PM Event and Control registers 4174 SCI interrupt (and handler) 4175 Fixed Events 4176 General Purpose Events (GPEs) 4177 Global Lock 4178 ACPI PM timer 4179 FACS table (Waking vectors and Global Lock) 4180 4181Updated the unix tarball directory structure to match the ACPICA git 4182source 4183tree. This ensures that the generic unix makefiles work properly (in 4184generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 4185867. 4186 4187Updated the return value of the _REV predefined method to integer value 5 4188to 4189reflect ACPI 5.0 support. 4190 4191Moved the external ACPI PM timer interface prototypes to the public 4192acpixf.h 4193file where they belong. 4194 4195Example Code and Data Size: These are the sizes for the OS-independent 4196acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4197debug 4198version of the code includes the debug output trace mechanism and has a 4199much 4200larger code and data size. 4201 4202 Previous Release: 4203 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4204 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4205 Current Release: 4206 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 4207 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 4208 4209 42102) iASL Compiler/Disassembler and Tools: 4211 4212Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 4213descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 4214incorrectly displayed. 4215 4216AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 4217specification. 4218 4219---------------------------------------- 422011 January 2012. Summary of changes for version 20120111: 4221 4222 42231) ACPICA Core Subsystem: 4224 4225Implemented a new mechanism to allow host device drivers to check for 4226address 4227range conflicts with ACPI Operation Regions. Both SystemMemory and 4228SystemIO 4229address spaces are supported. A new external interface, 4230AcpiCheckAddressRange, 4231allows drivers to check an address range against the ACPI namespace. See 4232the 4233ACPICA reference for additional details. Adds one new file, 4234utilities/utaddress.c. Lin Ming, Bob Moore. 4235 4236Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 4237Control 4238and 4239Status registers, update the ACPI 5.0 flags, and update internal data 4240structures to handle an FADT larger than 256 bytes. The size of the ACPI 42415.0 4242FADT is 268 bytes. 4243 4244Updated all ACPICA copyrights and signons to 2012. Added the 2012 4245copyright to 4246all module headers and signons, including the standard Linux header. This 4247affects virtually every file in the ACPICA core subsystem, iASL compiler, 4248and 4249all ACPICA utilities. 4250 4251Example Code and Data Size: These are the sizes for the OS-independent 4252acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4253debug 4254version of the code includes the debug output trace mechanism and has a 4255much 4256larger code and data size. 4257 4258 Previous Release: 4259 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4260 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4261 Current Release: 4262 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 4263 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 4264 4265 42662) iASL Compiler/Disassembler and Tools: 4267 4268Disassembler: fixed a problem with the automatic resource tag generation 4269support. Fixes a problem where the resource tags are inadvertently not 4270constructed if the table being disassembled contains external references 4271to 4272control methods. Moved the actual construction of the tags to after the 4273final 4274namespace is constructed (after 2nd parse is invoked due to external 4275control 4276method references.) ACPICA BZ 941. 4277 4278Table Compiler: Make all "generic" operators caseless. These are the 4279operators 4280like UINT8, String, etc. Making these caseless improves ease-of-use. 4281ACPICA BZ 4282934. 4283 4284---------------------------------------- 428523 November 2011. Summary of changes for version 20111123: 4286 42870) ACPI 5.0 Support: 4288 4289This release contains full support for the ACPI 5.0 specification, as 4290summarized below. 4291 4292Reduced Hardware Support: 4293------------------------- 4294 4295This support allows for ACPI systems without the usual ACPI hardware. 4296This 4297support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 4298will 4299not attempt to initialize or use any of the usual ACPI hardware. Note, 4300when 4301this flag is set, all of the following ACPI hardware is assumed to be not 4302present and is not initialized or accessed: 4303 4304 General Purpose Events (GPEs) 4305 Fixed Events (PM1a/PM1b and PM Control) 4306 Power Management Timer and Console Buttons (power/sleep) 4307 Real-time Clock Alarm 4308 Global Lock 4309 System Control Interrupt (SCI) 4310 The FACS is assumed to be non-existent 4311 4312ACPI Tables: 4313------------ 4314 4315All new tables and updates to existing tables are fully supported in the 4316ACPICA headers (for use by device drivers), the disassembler, and the 4317iASL 4318Data Table Compiler. ACPI 5.0 defines these new tables: 4319 4320 BGRT /* Boot Graphics Resource Table */ 4321 DRTM /* Dynamic Root of Trust for Measurement table */ 4322 FPDT /* Firmware Performance Data Table */ 4323 GTDT /* Generic Timer Description Table */ 4324 MPST /* Memory Power State Table */ 4325 PCCT /* Platform Communications Channel Table */ 4326 PMTT /* Platform Memory Topology Table */ 4327 RASF /* RAS Feature table */ 4328 4329Operation Regions/SpaceIDs: 4330--------------------------- 4331 4332All new operation regions are fully supported by the iASL compiler, the 4333disassembler, and the ACPICA runtime code (for dispatch to region 4334handlers.) 4335The new operation region Space IDs are: 4336 4337 GeneralPurposeIo 4338 GenericSerialBus 4339 4340Resource Descriptors: 4341--------------------- 4342 4343All new ASL resource descriptors are fully supported by the iASL 4344compiler, 4345the 4346ASL/AML disassembler, and the ACPICA runtime Resource Manager code 4347(including 4348all new predefined resource tags). New descriptors are: 4349 4350 FixedDma 4351 GpioIo 4352 GpioInt 4353 I2cSerialBus 4354 SpiSerialBus 4355 UartSerialBus 4356 4357ASL/AML Operators, New and Modified: 4358------------------------------------ 4359 4360One new operator is added, the Connection operator, which is used to 4361associate 4362a GeneralPurposeIo or GenericSerialBus resource descriptor with 4363individual 4364field objects within an operation region. Several new protocols are 4365associated 4366with the AccessAs operator. All are fully supported by the iASL compiler, 4367disassembler, and runtime ACPICA AML interpreter: 4368 4369 Connection // Declare Field Connection 4370attributes 4371 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 4372 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 4373Protocol 4374 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 4375 RawDataBuffer // Data type for Vendor Data 4376fields 4377 4378Predefined ASL/AML Objects: 4379--------------------------- 4380 4381All new predefined objects/control-methods are supported by the iASL 4382compiler 4383and the ACPICA runtime validation/repair (arguments and return values.) 4384New 4385predefined names include the following: 4386 4387Standard Predefined Names (Objects or Control Methods): 4388 _AEI, _CLS, _CPC, _CWS, _DEP, 4389 _DLM, _EVT, _GCP, _CRT, _GWS, 4390 _HRV, _PRE, _PSE, _SRT, _SUB. 4391 4392Resource Tags (Names used to access individual fields within resource 4393descriptors): 4394 _DBT, _DPL, _DRS, _END, _FLC, 4395 _IOR, _LIN, _MOD, _PAR, _PHA, 4396 _PIN, _PPI, _POL, _RXL, _SLV, 4397 _SPE, _STB, _TXL, _VEN. 4398 4399ACPICA External Interfaces: 4400--------------------------- 4401 4402Several new interfaces have been defined for use by ACPI-related device 4403drivers and other host OS services: 4404 4405AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 4406to 4407acquire and release AML mutexes that are defined in the DSDT/SSDT tables 4408provided by the BIOS. They are intended to be used in conjunction with 4409the 4410ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 4411mutual exclusion with the AML code/interpreter. 4412 4413AcpiGetEventResources: Returns the (formatted) resource descriptors as 4414defined 4415by the ACPI 5.0 _AEI object (ACPI Event Information). This object 4416provides 4417resource descriptors associated with hardware-reduced platform events, 4418similar 4419to the AcpiGetCurrentResources interface. 4420 4421Operation Region Handlers: For General Purpose IO and Generic Serial Bus 4422operation regions, information about the Connection() object and any 4423optional 4424length information is passed to the region handler within the Context 4425parameter. 4426 4427AcpiBufferToResource: This interface converts a raw AML buffer containing 4428a 4429resource template or resource descriptor to the ACPI_RESOURCE internal 4430format 4431suitable for use by device drivers. Can be used by an operation region 4432handler 4433to convert the Connection() buffer object into a ACPI_RESOURCE. 4434 4435Miscellaneous/Tools/TestSuites: 4436------------------------------- 4437 4438Support for extended _HID names (Four alpha characters instead of three). 4439Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 4440Support for ACPI 5.0 features in the ASLTS test suite. 4441Fully updated documentation (ACPICA and iASL reference documents.) 4442 4443ACPI Table Definition Language: 4444------------------------------- 4445 4446Support for this language was implemented and released as a subsystem of 4447the 4448iASL compiler in 2010. (See the iASL compiler User Guide.) 4449 4450 4451Non-ACPI 5.0 changes for this release: 4452-------------------------------------- 4453 44541) ACPICA Core Subsystem: 4455 4456Fix a problem with operation region declarations where a failure can 4457occur 4458if 4459the region name and an argument that evaluates to an object (such as the 4460region address) are in different namespace scopes. Lin Ming, ACPICA BZ 4461937. 4462 4463Do not abort an ACPI table load if an invalid space ID is found within. 4464This 4465will be caught later if the offending method is executed. ACPICA BZ 925. 4466 4467Fixed an issue with the FFixedHW space ID where the ID was not always 4468recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 4469 4470Fixed a problem with the 32-bit generation of the unix-specific OSL 4471(osunixxf.c). Lin Ming, ACPICA BZ 936. 4472 4473Several changes made to enable generation with the GCC 4.6 compiler. 4474ACPICA BZ 4475935. 4476 4477New error messages: Unsupported I/O requests (not 8/16/32 bit), and 4478Index/Bank 4479field registers out-of-range. 4480 44812) iASL Compiler/Disassembler and Tools: 4482 4483iASL: Implemented the __PATH__ operator, which returns the full pathname 4484of 4485the current source file. 4486 4487AcpiHelp: Automatically display expanded keyword information for all ASL 4488operators. 4489 4490Debugger: Add "Template" command to disassemble/dump resource template 4491buffers. 4492 4493Added a new master script to generate and execute the ASLTS test suite. 4494Automatically handles 32- and 64-bit generation. See tests/aslts.sh 4495 4496iASL: Fix problem with listing generation during processing of the 4497Switch() 4498operator where AML listing was disabled until the entire Switch block was 4499completed. 4500 4501iASL: Improve support for semicolon statement terminators. Fix "invalid 4502character" message for some cases when the semicolon is used. Semicolons 4503are 4504now allowed after every <Term> grammar element. ACPICA BZ 927. 4505 4506iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 4507923. 4508 4509Disassembler: Fix problem with disassembly of the DataTableRegion 4510operator 4511where an inadvertent "Unhandled deferred opcode" message could be 4512generated. 4513 45143) Example Code and Data Size 4515 4516These are the sizes for the OS-independent acpica.lib produced by the 4517Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4518includes the debug output trace mechanism and has a much larger code and 4519data 4520size. 4521 4522 Previous Release: 4523 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4524 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4525 Current Release: 4526 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 4527 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 4528 4529---------------------------------------- 453022 September 2011. Summary of changes for version 20110922: 4531 45320) ACPI 5.0 News: 4533 4534Support for ACPI 5.0 in ACPICA has been underway for several months and 4535will 4536be released at the same time that ACPI 5.0 is officially released. 4537 4538The ACPI 5.0 specification is on track for release in the next few 4539months. 4540 45411) ACPICA Core Subsystem: 4542 4543Fixed a problem where the maximum sleep time for the Sleep() operator was 4544intended to be limited to two seconds, but was inadvertently limited to 454520 4546seconds instead. 4547 4548Linux and Unix makefiles: Added header file dependencies to ensure 4549correct 4550generation of ACPICA core code and utilities. Also simplified the 4551makefiles 4552considerably through the use of the vpath variable to specify search 4553paths. 4554ACPICA BZ 924. 4555 45562) iASL Compiler/Disassembler and Tools: 4557 4558iASL: Implemented support to check the access length for all fields 4559created to 4560access named Resource Descriptor fields. For example, if a resource field 4561is 4562defined to be two bits, a warning is issued if a CreateXxxxField() is 4563used 4564with an incorrect bit length. This is implemented for all current 4565resource 4566descriptor names. ACPICA BZ 930. 4567 4568Disassembler: Fixed a byte ordering problem with the output of 24-bit and 456956- 4570bit integers. 4571 4572iASL: Fixed a couple of issues associated with variable-length package 4573objects. 1) properly handle constants like One, Ones, Zero -- do not make 4574a 4575VAR_PACKAGE when these are used as a package length. 2) Allow the 4576VAR_PACKAGE 4577opcode (in addition to PACKAGE) when validating object types for 4578predefined 4579names. 4580 4581iASL: Emit statistics for all output files (instead of just the ASL input 4582and 4583AML output). Includes listings, hex files, etc. 4584 4585iASL: Added -G option to the table compiler to allow the compilation of 4586custom 4587ACPI tables. The only part of a table that is required is the standard 458836- 4589byte 4590ACPI header. 4591 4592AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 4593headers), 4594which also adds correct 64-bit support. Also, now all output filenames 4595are 4596completely lower case. 4597 4598AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 4599loading table files. A warning is issued for any such tables. The only 4600exception is an FADT. This also fixes a possible fault when attempting to 4601load 4602non-AML tables. ACPICA BZ 932. 4603 4604AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 4605a 4606missing table terminator could cause a fault when using the -p option. 4607 4608AcpiSrc: Fixed a possible divide-by-zero fault when generating file 4609statistics. 4610 46113) Example Code and Data Size 4612 4613These are the sizes for the OS-independent acpica.lib produced by the 4614Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 4615includes the debug output trace mechanism and has a much larger code and 4616data 4617size. 4618 4619 Previous Release (VC 9.0): 4620 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4621 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4622 Current Release (VC 9.0): 4623 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4624 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4625 4626 4627---------------------------------------- 462823 June 2011. Summary of changes for version 20110623: 4629 46301) ACPI CA Core Subsystem: 4631 4632Updated the predefined name repair mechanism to not attempt repair of a 4633_TSS 4634return object if a _PSS object is present. We can only sort the _TSS 4635return 4636package if there is no _PSS within the same scope. This is because if 4637_PSS 4638is 4639present, the ACPI specification dictates that the _TSS Power Dissipation 4640field 4641is to be ignored, and therefore some BIOSs leave garbage values in the 4642_TSS 4643Power field(s). In this case, it is best to just return the _TSS package 4644as- 4645is. Reported by, and fixed with assistance from Fenghua Yu. 4646 4647Added an option to globally disable the control method return value 4648validation 4649and repair. This runtime option can be used to disable return value 4650repair 4651if 4652this is causing a problem on a particular machine. Also added an option 4653to 4654AcpiExec (-dr) to set this disable flag. 4655 4656All makefiles and project files: Major changes to improve generation of 4657ACPICA 4658tools. ACPICA BZ 912: 4659 Reduce default optimization levels to improve compatibility 4660 For Linux, add strict-aliasing=0 for gcc 4 4661 Cleanup and simplify use of command line defines 4662 Cleanup multithread library support 4663 Improve usage messages 4664 4665Linux-specific header: update handling of THREAD_ID and pthread. For the 466632- 4667bit case, improve casting to eliminate possible warnings, especially with 4668the 4669acpica tools. 4670 4671Example Code and Data Size: These are the sizes for the OS-independent 4672acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4673debug 4674version of the code includes the debug output trace mechanism and has a 4675much 4676larger code and data size. 4677 4678 Previous Release (VC 9.0): 4679 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4680 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4681 Current Release (VC 9.0): 4682 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 4683 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4684 46852) iASL Compiler/Disassembler and Tools: 4686 4687With this release, a new utility named "acpihelp" has been added to the 4688ACPICA 4689package. This utility summarizes the ACPI specification chapters for the 4690ASL 4691and AML languages. It generates under Linux/Unix as well as Windows, and 4692provides the following functionality: 4693 Find/display ASL operator(s) -- with description and syntax. 4694 Find/display ASL keyword(s) -- with exact spelling and descriptions. 4695 Find/display ACPI predefined name(s) -- with description, number 4696 of arguments, and the return value data type. 4697 Find/display AML opcode name(s) -- with opcode, arguments, and 4698grammar. 4699 Decode/display AML opcode -- with opcode name, arguments, and 4700grammar. 4701 4702Service Layers: Make multi-thread support configurable. Conditionally 4703compile 4704the multi-thread support so that threading libraries will not be linked 4705if 4706not 4707necessary. The only tool that requires multi-thread support is AcpiExec. 4708 4709iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 4710of 4711Bison appear to want the interface to yyerror to be a const char * (or at 4712least this is a problem when generating iASL on some systems.) ACPICA BZ 4713923 4714Pierre Lejeune. 4715 4716Tools: Fix for systems where O_BINARY is not defined. Only used for 4717Windows 4718versions of the tools. 4719 4720---------------------------------------- 472127 May 2011. Summary of changes for version 20110527: 4722 47231) ACPI CA Core Subsystem: 4724 4725ASL Load() operator: Reinstate most restrictions on the incoming ACPI 4726table 4727signature. Now, only allow SSDT, OEMx, and a null signature. History: 4728 1) Originally, we checked the table signature for "SSDT" or "PSDT". 4729 (PSDT is now obsolete.) 4730 2) We added support for OEMx tables, signature "OEM" plus a fourth 4731 "don't care" character. 4732 3) Valid tables were encountered with a null signature, so we just 4733 gave up on validating the signature, (05/2008). 4734 4) We encountered non-AML tables such as the MADT, which caused 4735 interpreter errors and kernel faults. So now, we once again allow 4736 only SSDT, OEMx, and now, also a null signature. (05/2011). 4737 4738Added the missing _TDL predefined name to the global name list in order 4739to 4740enable validation. Affects both the core ACPICA code and the iASL 4741compiler. 4742 4743Example Code and Data Size: These are the sizes for the OS-independent 4744acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4745debug 4746version of the code includes the debug output trace mechanism and has a 4747much 4748larger code and data size. 4749 4750 Previous Release (VC 9.0): 4751 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4752 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4753 Current Release (VC 9.0): 4754 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 4755 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 4756 47572) iASL Compiler/Disassembler and Tools: 4758 4759Debugger/AcpiExec: Implemented support for "complex" method arguments on 4760the 4761debugger command line. This adds support beyond simple integers -- 4762including 4763Strings, Buffers, and Packages. Includes support for nested packages. 4764Increased the default command line buffer size to accommodate these 4765arguments. 4766See the ACPICA reference for details and syntax. ACPICA BZ 917. 4767 4768Debugger/AcpiExec: Implemented support for "default" method arguments for 4769the 4770Execute/Debug command. Now, the debugger will always invoke a control 4771method 4772with the required number of arguments -- even if the command line 4773specifies 4774none or insufficient arguments. It uses default integer values for any 4775missing 4776arguments. Also fixes a bug where only six method arguments maximum were 4777supported instead of the required seven. 4778 4779Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 4780and 4781also return status in order to prevent buffer overruns. See the ACPICA 4782reference for details and syntax. ACPICA BZ 921 4783 4784iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 4785makefiles to simplify support for the two different but similar parser 4786generators, bison and yacc. 4787 4788Updated the generic unix makefile for gcc 4. The default gcc version is 4789now 4790expected to be 4 or greater, since options specific to gcc 4 are used. 4791 4792---------------------------------------- 479313 April 2011. Summary of changes for version 20110413: 4794 47951) ACPI CA Core Subsystem: 4796 4797Implemented support to execute a so-called "orphan" _REG method under the 4798EC 4799device. This change will force the execution of a _REG method underneath 4800the 4801EC 4802device even if there is no corresponding operation region of type 4803EmbeddedControl. Fixes a problem seen on some machines and apparently is 4804compatible with Windows behavior. ACPICA BZ 875. 4805 4806Added more predefined methods that are eligible for automatic NULL 4807package 4808element removal. This change adds another group of predefined names to 4809the 4810list 4811of names that can be repaired by having NULL package elements dynamically 4812removed. This group are those methods that return a single variable- 4813length 4814package containing simple data types such as integers, buffers, strings. 4815This 4816includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 4817_PSL, 4818_Sx, 4819and _TZD. ACPICA BZ 914. 4820 4821Split and segregated all internal global lock functions to a new file, 4822evglock.c. 4823 4824Updated internal address SpaceID for DataTable regions. Moved this 4825internal 4826space 4827id in preparation for ACPI 5.0 changes that will include some new space 4828IDs. 4829This 4830change should not affect user/host code. 4831 4832Example Code and Data Size: These are the sizes for the OS-independent 4833acpica.lib 4834produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4835version of 4836the code includes the debug output trace mechanism and has a much larger 4837code 4838and 4839data size. 4840 4841 Previous Release (VC 9.0): 4842 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4843 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4844 Current Release (VC 9.0): 4845 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4846 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4847 48482) iASL Compiler/Disassembler and Tools: 4849 4850iASL/DTC: Major update for new grammar features. Allow generic data types 4851in 4852custom ACPI tables. Field names are now optional. Any line can be split 4853to 4854multiple lines using the continuation char (\). Large buffers now use 4855line- 4856continuation character(s) and no colon on the continuation lines. See the 4857grammar 4858update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 4859Moore. 4860 4861iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 4862statements. 4863Since the parser stuffs a "zero" as the return value for these statements 4864(due 4865to 4866the underlying AML grammar), they were seen as "return with value" by the 4867iASL 4868semantic checking. They are now seen correctly as "null" return 4869statements. 4870 4871iASL: Check if a_REG declaration has a corresponding Operation Region. 4872Adds a 4873check for each _REG to ensure that there is in fact a corresponding 4874operation 4875region declaration in the same scope. If not, the _REG method is not very 4876useful 4877since it probably won't be executed. ACPICA BZ 915. 4878 4879iASL/DTC: Finish support for expression evaluation. Added a new 4880expression 4881parser 4882that implements c-style operator precedence and parenthesization. ACPICA 4883bugzilla 4884908. 4885 4886Disassembler/DTC: Remove support for () and <> style comments in data 4887tables. 4888Now 4889that DTC has full expression support, we don't want to have comment 4890strings 4891that 4892start with a parentheses or a less-than symbol. Now, only the standard /* 4893and 4894// 4895comments are supported, as well as the bracket [] comments. 4896 4897AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 4898"unusual" 4899headers in the acpidump file. Update the header validation to support 4900these 4901tables. Problem introduced in previous AcpiXtract version in the change 4902to 4903support "wrong checksum" error messages emitted by acpidump utility. 4904 4905iASL: Add a * option to generate all template files (as a synonym for 4906ALL) 4907as 4908in 4909"iasl -T *" or "iasl -T ALL". 4910 4911iASL/DTC: Do not abort compiler on fatal errors. We do not want to 4912completely 4913abort the compiler on "fatal" errors, simply should abort the current 4914compile. 4915This allows multiple compiles with a single (possibly wildcard) compiler 4916invocation. 4917 4918---------------------------------------- 491916 March 2011. Summary of changes for version 20110316: 4920 49211) ACPI CA Core Subsystem: 4922 4923Fixed a problem caused by a _PRW method appearing at the namespace root 4924scope 4925during the setup of wake GPEs. A fault could occur if a _PRW directly 4926under 4927the 4928root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 4929 4930Implemented support for "spurious" Global Lock interrupts. On some 4931systems, a 4932global lock interrupt can occur without the pending flag being set. Upon 4933a 4934GL 4935interrupt, we now ensure that a thread is actually waiting for the lock 4936before 4937signaling GL availability. Rafael Wysocki, Bob Moore. 4938 4939Example Code and Data Size: These are the sizes for the OS-independent 4940acpica.lib 4941produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4942version of 4943the code includes the debug output trace mechanism and has a much larger 4944code 4945and 4946data size. 4947 4948 Previous Release (VC 9.0): 4949 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4950 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4951 Current Release (VC 9.0): 4952 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4953 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4954 49552) iASL Compiler/Disassembler and Tools: 4956 4957Implemented full support for the "SLIC" ACPI table. Includes support in 4958the 4959header files, disassembler, table compiler, and template generator. Bob 4960Moore, 4961Lin Ming. 4962 4963AcpiXtract: Correctly handle embedded comments and messages from 4964AcpiDump. 4965Apparently some or all versions of acpidump will occasionally emit a 4966comment 4967like 4968"Wrong checksum", etc., into the dump file. This was causing problems for 4969AcpiXtract. ACPICA BZ 905. 4970 4971iASL: Fix the Linux makefile by removing an inadvertent double file 4972inclusion. 4973ACPICA BZ 913. 4974 4975AcpiExec: Update installation of operation region handlers. Install one 4976handler 4977for a user-defined address space. This is used by the ASL test suite 4978(ASLTS). 4979 4980---------------------------------------- 498111 February 2011. Summary of changes for version 20110211: 4982 49831) ACPI CA Core Subsystem: 4984 4985Added a mechanism to defer _REG methods for some early-installed 4986handlers. 4987Most user handlers should be installed before call to 4988AcpiEnableSubsystem. 4989However, Event handlers and region handlers should be installed after 4990AcpiInitializeObjects. Override handlers for the "default" regions should 4991be 4992installed early, however. This change executes all _REG methods for the 4993default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 4994chicken/egg issues between them. ACPICA BZ 848. 4995 4996Implemented an optimization for GPE detection. This optimization will 4997simply 4998ignore GPE registers that contain no enabled GPEs -- there is no need to 4999read the register since this information is available internally. This 5000becomes more important on machines with a large GPE space. ACPICA 5001bugzilla 5002884. Lin Ming. Suggestion from Joe Liu. 5003 5004Removed all use of the highly unreliable FADT revision field. The 5005revision 5006number in the FADT has been found to be completely unreliable and cannot 5007be 5008trusted. Only the actual table length can be used to infer the version. 5009This 5010change updates the ACPICA core and the disassembler so that both no 5011longer 5012even look at the FADT version and instead depend solely upon the FADT 5013length. 5014 5015Fix an unresolved name issue for the no-debug and no-error-message source 5016generation cases. The _AcpiModuleName was left undefined in these cases, 5017but 5018it is actually needed as a parameter to some interfaces. Define 5019_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 5020 5021Split several large files (makefiles and project files updated) 5022 utglobal.c -> utdecode.c 5023 dbcomds.c -> dbmethod.c dbnames.c 5024 dsopcode.c -> dsargs.c dscontrol.c 5025 dsload.c -> dsload2.c 5026 aslanalyze.c -> aslbtypes.c aslwalks.c 5027 5028Example Code and Data Size: These are the sizes for the OS-independent 5029acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5030debug version of the code includes the debug output trace mechanism and 5031has 5032a much larger code and data size. 5033 5034 Previous Release (VC 9.0): 5035 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5036 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5037 Current Release (VC 9.0): 5038 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5039 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5040 50412) iASL Compiler/Disassembler and Tools: 5042 5043iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 5044These are useful C-style macros with the standard definitions. ACPICA 5045bugzilla 898. 5046 5047iASL/DTC: Added support for integer expressions and labels. Support for 5048full 5049expressions for all integer fields in all ACPI tables. Support for labels 5050in 5051"generic" portions of tables such as UEFI. See the iASL reference manual. 5052 5053Debugger: Added a command to display the status of global handlers. The 5054"handlers" command will display op region, fixed event, and miscellaneous 5055global handlers. installation status -- and for op regions, whether 5056default 5057or user-installed handler will be used. 5058 5059iASL: Warn if reserved method incorrectly returns a value. Many 5060predefined 5061names are defined such that they do not return a value. If implemented as 5062a 5063method, issue a warning if such a name explicitly returns a value. ACPICA 5064Bugzilla 855. 5065 5066iASL: Added detection of GPE method name conflicts. Detects a conflict 5067where 5068there are two GPE methods of the form _Lxy and _Exy in the same scope. 5069(For 5070example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 5071 5072iASL/DTC: Fixed a couple input scanner issues with comments and line 5073numbers. Comment remover could get confused and miss a comment ending. 5074Fixed 5075a problem with line counter maintenance. 5076 5077iASL/DTC: Reduced the severity of some errors from fatal to error. There 5078is 5079no need to abort on simple errors within a field definition. 5080 5081Debugger: Simplified the output of the help command. All help output now 5082in 5083a single screen, instead of help subcommands. ACPICA Bugzilla 897. 5084 5085---------------------------------------- 508612 January 2011. Summary of changes for version 20110112: 5087 50881) ACPI CA Core Subsystem: 5089 5090Fixed a race condition between method execution and namespace walks that 5091can 5092possibly cause a fault. The problem was apparently introduced in version 509320100528 as a result of a performance optimization that reduces the 5094number 5095of 5096namespace walks upon method exit by using the delete_namespace_subtree 5097function instead of the delete_namespace_by_owner function used 5098previously. 5099Bug is a missing namespace lock in the delete_namespace_subtree function. 5100dana.myers@oracle.com 5101 5102Fixed several issues and a possible fault with the automatic "serialized" 5103method support. History: This support changes a method to "serialized" on 5104the 5105fly if the method generates an AE_ALREADY_EXISTS error, indicating the 5106possibility that it cannot handle reentrancy. This fix repairs a couple 5107of 5108issues seen in the field, especially on machines with many cores: 5109 5110 1) Delete method children only upon the exit of the last thread, 5111 so as to not delete objects out from under other running threads 5112 (and possibly causing a fault.) 5113 2) Set the "serialized" bit for the method only upon the exit of the 5114 Last thread, so as to not cause deadlock when running threads 5115 attempt to exit. 5116 3) Cleanup the use of the AML "MethodFlags" and internal method flags 5117 so that there is no longer any confusion between the two. 5118 5119 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 5120 5121Debugger: Now lock the namespace for duration of a namespace dump. 5122Prevents 5123issues if the namespace is changing dynamically underneath the debugger. 5124Especially affects temporary namespace nodes, since the debugger displays 5125these also. 5126 5127Updated the ordering of include files. The ACPICA headers should appear 5128before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 5129set 5130any necessary compiler-specific defines, etc. Affects the ACPI-related 5131tools 5132and utilities. 5133 5134Updated all ACPICA copyrights and signons to 2011. Added the 2011 5135copyright 5136to all module headers and signons, including the Linux header. This 5137affects 5138virtually every file in the ACPICA core subsystem, iASL compiler, and all 5139utilities. 5140 5141Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 5142project files for VC++ 6.0 are now obsolete. New project files can be 5143found 5144under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 5145details. 5146 5147Example Code and Data Size: These are the sizes for the OS-independent 5148acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 5149debug version of the code includes the debug output trace mechanism and 5150has a 5151much larger code and data size. 5152 5153 Previous Release (VC 6.0): 5154 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5155 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5156 Current Release (VC 9.0): 5157 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 5158 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 5159 51602) iASL Compiler/Disassembler and Tools: 5161 5162iASL: Added generic data types to the Data Table compiler. Add "generic" 5163data 5164types such as UINT32, String, Unicode, etc., to simplify the generation 5165of 5166platform-defined tables such as UEFI. Lin Ming. 5167 5168iASL: Added listing support for the Data Table Compiler. Adds listing 5169support 5170(-l) to display actual binary output for each line of input code. 5171 5172---------------------------------------- 517309 December 2010. Summary of changes for version 20101209: 5174 51751) ACPI CA Core Subsystem: 5176 5177Completed the major overhaul of the GPE support code that was begun in 5178July 51792010. Major features include: removal of _PRW execution in ACPICA (host 5180executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 5181changes to existing interfaces, simplification of GPE handler operation, 5182and 5183a handful of new interfaces: 5184 5185 AcpiUpdateAllGpes 5186 AcpiFinishGpe 5187 AcpiSetupGpeForWake 5188 AcpiSetGpeWakeMask 5189 One new file, evxfgpe.c to consolidate all external GPE interfaces. 5190 5191See the ACPICA Programmer Reference for full details and programming 5192information. See the new section 4.4 "General Purpose Event (GPE) 5193Support" 5194for a full overview, and section 8.7 "ACPI General Purpose Event 5195Management" 5196for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 5197Ming, 5198Bob Moore, Rafael Wysocki. 5199 5200Implemented a new GPE feature for Windows compatibility, the "Implicit 5201Wake 5202GPE Notify". This feature will automatically issue a Notify(2) on a 5203device 5204when a Wake GPE is received if there is no corresponding GPE method or 5205handler. ACPICA BZ 870. 5206 5207Fixed a problem with the Scope() operator during table parse and load 5208phase. 5209During load phase (table load or method execution), the scope operator 5210should 5211not enter the target into the namespace. Instead, it should open a new 5212scope 5213at the target location. Linux BZ 19462, ACPICA BZ 882. 5214 5215Example Code and Data Size: These are the sizes for the OS-independent 5216acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5217debug version of the code includes the debug output trace mechanism and 5218has a 5219much larger code and data size. 5220 5221 Previous Release: 5222 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 5223 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 5224 Current Release: 5225 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5226 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5227 52282) iASL Compiler/Disassembler and Tools: 5229 5230iASL: Relax the alphanumeric restriction on _CID strings. These strings 5231are 5232"bus-specific" per the ACPI specification, and therefore any characters 5233are 5234acceptable. The only checks that can be performed are for a null string 5235and 5236perhaps for a leading asterisk. ACPICA BZ 886. 5237 5238iASL: Fixed a problem where a syntax error that caused a premature EOF 5239condition on the source file emitted a very confusing error message. The 5240premature EOF is now detected correctly. ACPICA BZ 891. 5241 5242Disassembler: Decode the AccessSize within a Generic Address Structure 5243(byte 5244access, word access, etc.) Note, this field does not allow arbitrary bit 5245access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 5246 5247New: AcpiNames utility - Example namespace dump utility. Shows an example 5248of 5249ACPICA configuration for a minimal namespace dump utility. Uses table and 5250namespace managers, but no AML interpreter. Does not add any 5251functionality 5252over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 5253partition and configure ACPICA. ACPICA BZ 883. 5254 5255AML Debugger: Increased the debugger buffer size for method return 5256objects. 5257Was 4K, increased to 16K. Also enhanced error messages for debugger 5258method 5259execution, including the buffer overflow case. 5260 5261---------------------------------------- 526213 October 2010. Summary of changes for version 20101013: 5263 52641) ACPI CA Core Subsystem: 5265 5266Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 5267now 5268clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 5269HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 5270 5271Changed the type of the predefined namespace object _TZ from ThermalZone 5272to 5273Device. This was found to be confusing to the host software that 5274processes 5275the various thermal zones, since _TZ is not really a ThermalZone. 5276However, 5277a 5278Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 5279Zhang. 5280 5281Added Windows Vista SP2 to the list of supported _OSI strings. The actual 5282string is "Windows 2006 SP2". 5283 5284Eliminated duplicate code in AcpiUtExecute* functions. Now that the 5285nsrepair 5286code automatically repairs _HID-related strings, this type of code is no 5287longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 5288878. 5289 5290Example Code and Data Size: These are the sizes for the OS-independent 5291acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5292debug version of the code includes the debug output trace mechanism and 5293has a 5294much larger code and data size. 5295 5296 Previous Release: 5297 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5298 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5299 Current Release: 5300 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5301 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5302 53032) iASL Compiler/Disassembler and Tools: 5304 5305iASL: Implemented additional compile-time validation for _HID strings. 5306The 5307non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 5308length 5309of 5310the string must be exactly seven or eight characters. For both _HID and 5311_CID 5312strings, all characters must be alphanumeric. ACPICA BZ 874. 5313 5314iASL: Allow certain "null" resource descriptors. Some BIOS code creates 5315descriptors that are mostly or all zeros, with the expectation that they 5316will 5317be filled in at runtime. iASL now allows this as long as there is a 5318"resource 5319tag" (name) associated with the descriptor, which gives the ASL a handle 5320needed to modify the descriptor. ACPICA BZ 873. 5321 5322Added single-thread support to the generic Unix application OSL. 5323Primarily 5324for iASL support, this change removes the use of semaphores in the 5325single- 5326threaded ACPICA tools/applications - increasing performance. The 5327_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 5328option. ACPICA BZ 879. 5329 5330AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 5331support 5332for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 5333 5334iASL: Moved all compiler messages to a new file, aslmessages.h. 5335 5336---------------------------------------- 533715 September 2010. Summary of changes for version 20100915: 5338 53391) ACPI CA Core Subsystem: 5340 5341Removed the AcpiOsDerivePciId OSL interface. The various host 5342implementations 5343of this function were not OS-dependent and are now obsolete and can be 5344removed from all host OSLs. This function has been replaced by 5345AcpiHwDerivePciId, which is now part of the ACPICA core code. 5346AcpiHwDerivePciId has been implemented without recursion. Adds one new 5347module, hwpci.c. ACPICA BZ 857. 5348 5349Implemented a dynamic repair for _HID and _CID strings. The following 5350problems are now repaired at runtime: 1) Remove a leading asterisk in the 5351string, and 2) the entire string is uppercased. Both repairs are in 5352accordance with the ACPI specification and will simplify host driver 5353code. 5354ACPICA BZ 871. 5355 5356The ACPI_THREAD_ID type is no longer configurable, internally it is now 5357always UINT64. This simplifies the ACPICA code, especially any printf 5358output. 5359UINT64 is the only common data type for all thread_id types across all 5360operating systems. It is now up to the host OSL to cast the native 5361thread_id 5362type to UINT64 before returning the value to ACPICA (via 5363AcpiOsGetThreadId). 5364Lin Ming, Bob Moore. 5365 5366Added the ACPI_INLINE type to enhance the ACPICA configuration. The 5367"inline" 5368keyword is not standard across compilers, and this type allows inline to 5369be 5370configured on a per-compiler basis. Lin Ming. 5371 5372Made the system global AcpiGbl_SystemAwakeAndRunning publically 5373available. 5374Added an extern for this boolean in acpixf.h. Some hosts utilize this 5375value 5376during suspend/restore operations. ACPICA BZ 869. 5377 5378All code that implements error/warning messages with the "ACPI:" prefix 5379has 5380been moved to a new module, utxferror.c. 5381 5382The UINT64_OVERLAY was moved to utmath.c, which is the only module where 5383it 5384is used. ACPICA BZ 829. Lin Ming, Bob Moore. 5385 5386Example Code and Data Size: These are the sizes for the OS-independent 5387acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5388debug version of the code includes the debug output trace mechanism and 5389has a 5390much larger code and data size. 5391 5392 Previous Release: 5393 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5394 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5395 Current Release: 5396 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 5397 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 5398 53992) iASL Compiler/Disassembler and Tools: 5400 5401iASL/Disassembler: Write ACPI errors to stderr instead of the output 5402file. 5403This keeps the output files free of random error messages that may 5404originate 5405from within the namespace/interpreter code. Used this opportunity to 5406merge 5407all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 5408866. Lin Ming, Bob Moore. 5409 5410Tools: update some printfs for ansi warnings on size_t. Handle width 5411change 5412of size_t on 32-bit versus 64-bit generations. Lin Ming. 5413 5414---------------------------------------- 541506 August 2010. Summary of changes for version 20100806: 5416 54171) ACPI CA Core Subsystem: 5418 5419Designed and implemented a new host interface to the _OSI support code. 5420This 5421will allow the host to dynamically add or remove multiple _OSI strings, 5422as 5423well as install an optional handler that is called for each _OSI 5424invocation. 5425Also added a new AML debugger command, 'osi' to display and modify the 5426global 5427_OSI string table, and test support in the AcpiExec utility. See the 5428ACPICA 5429reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 5430New Functions: 5431 AcpiInstallInterface - Add an _OSI string. 5432 AcpiRemoveInterface - Delete an _OSI string. 5433 AcpiInstallInterfaceHandler - Install optional _OSI handler. 5434Obsolete Functions: 5435 AcpiOsValidateInterface - no longer used. 5436New Files: 5437 source/components/utilities/utosi.c 5438 5439Re-introduced the support to enable multi-byte transfers for Embedded 5440Controller (EC) operation regions. A reported problem was found to be a 5441bug 5442in the host OS, not in the multi-byte support. Previously, the maximum 5443data 5444size passed to the EC operation region handler was a single byte. There 5445are 5446often EC Fields larger than one byte that need to be transferred, and it 5447is 5448useful for the EC driver to lock these as a single transaction. This 5449change 5450enables single transfers larger than 8 bits. This effectively changes the 5451access to the EC space from ByteAcc to AnyAcc, and will probably require 5452changes to the host OS Embedded Controller driver to enable 16/32/64/256- 5453bit 5454transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 5455 5456Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 5457prototype in acpiosxf.h had the output value pointer as a (void *). 5458It should be a (UINT64 *). This may affect some host OSL code. 5459 5460Fixed a couple problems with the recently modified Linux makefiles for 5461iASL 5462and AcpiExec. These new makefiles place the generated object files in the 5463local directory so that there can be no collisions between the files that 5464are 5465shared between them that are compiled with different options. 5466 5467Example Code and Data Size: These are the sizes for the OS-independent 5468acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5469debug version of the code includes the debug output trace mechanism and 5470has a 5471much larger code and data size. 5472 5473 Previous Release: 5474 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5475 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5476 Current Release: 5477 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 5478 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 5479 54802) iASL Compiler/Disassembler and Tools: 5481 5482iASL/Disassembler: Added a new option (-da, "disassemble all") to load 5483the 5484namespace from and disassemble an entire group of AML files. Useful for 5485loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 5486and 5487disassembling with one simple command. ACPICA BZ 865. Lin Ming. 5488 5489iASL: Allow multiple invocations of -e option. This change allows 5490multiple 5491uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 5492834. 5493Lin Ming. 5494 5495---------------------------------------- 549602 July 2010. Summary of changes for version 20100702: 5497 54981) ACPI CA Core Subsystem: 5499 5500Implemented several updates to the recently added GPE reference count 5501support. The model for "wake" GPEs is changing to give the host OS 5502complete 5503control of these GPEs. Eventually, the ACPICA core will not execute any 5504_PRW 5505methods, since the host already must execute them. Also, additional 5506changes 5507were made to help ensure that the reference counts are kept in proper 5508synchronization with reality. Rafael J. Wysocki. 5509 55101) Ensure that GPEs are not enabled twice during initialization. 55112) Ensure that GPE enable masks stay in sync with the reference count. 55123) Do not inadvertently enable GPEs when writing GPE registers. 55134) Remove the internal wake reference counter and add new AcpiGpeWakeup 5514interface. This interface will set or clear individual GPEs for wakeup. 55155) Remove GpeType argument from AcpiEnable and AcpiDisable. These 5516interfaces 5517are now used for "runtime" GPEs only. 5518 5519Changed the behavior of the GPE install/remove handler interfaces. The 5520GPE 5521is 5522no longer disabled during this process, as it was found to cause problems 5523on 5524some machines. Rafael J. Wysocki. 5525 5526Reverted a change introduced in version 20100528 to enable Embedded 5527Controller multi-byte transfers. This change was found to cause problems 5528with 5529Index Fields and possibly Bank Fields. It will be reintroduced when these 5530problems have been resolved. 5531 5532Fixed a problem with references to Alias objects within Package Objects. 5533A 5534reference to an Alias within the definition of a Package was not always 5535resolved properly. Aliases to objects like Processors, Thermal zones, 5536etc. 5537were resolved to the actual object instead of a reference to the object 5538as 5539it 5540should be. Package objects are only allowed to contain integer, string, 5541buffer, package, and reference objects. Redhat bugzilla 608648. 5542 5543Example Code and Data Size: These are the sizes for the OS-independent 5544acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5545debug version of the code includes the debug output trace mechanism and 5546has a 5547much larger code and data size. 5548 5549 Previous Release: 5550 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5551 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5552 Current Release: 5553 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5554 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 5555 55562) iASL Compiler/Disassembler and Tools: 5557 5558iASL: Implemented a new compiler subsystem to allow definition and 5559compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 5560These 5561are called "ACPI Data Tables", and the new compiler is the "Data Table 5562Compiler". This compiler is intended to simplify the existing error-prone 5563process of creating these tables for the BIOS, as well as allowing the 5564disassembly, modification, recompilation, and override of existing ACPI 5565data 5566tables. See the iASL User Guide for detailed information. 5567 5568iASL: Implemented a new Template Generator option in support of the new 5569Data 5570Table Compiler. This option will create examples of all known ACPI tables 5571that can be used as the basis for table development. See the iASL 5572documentation and the -T option. 5573 5574Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 5575Descriptor Table). 5576 5577Updated the Linux makefiles for iASL and AcpiExec to place the generated 5578object files in the local directory so that there can be no collisions 5579between the shared files between them that are generated with different 5580options. 5581 5582Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 5583Use 5584the #define __APPLE__ to enable this support. 5585 5586---------------------------------------- 558728 May 2010. Summary of changes for version 20100528: 5588 5589Note: The ACPI 4.0a specification was released on April 5, 2010 and is 5590available at www.acpi.info. This is primarily an errata release. 5591 55921) ACPI CA Core Subsystem: 5593 5594Undefined ACPI tables: We are looking for the definitions for the 5595following 5596ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 5597 5598Implemented support to enable multi-byte transfers for Embedded 5599Controller 5600(EC) operation regions. Previously, the maximum data size passed to the 5601EC 5602operation region handler was a single byte. There are often EC Fields 5603larger 5604than one byte that need to be transferred, and it is useful for the EC 5605driver 5606to lock these as a single transaction. This change enables single 5607transfers 5608larger than 8 bits. This effectively changes the access to the EC space 5609from 5610ByteAcc to AnyAcc, and will probably require changes to the host OS 5611Embedded 5612Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 5613bit 5614transfers. Alexey Starikovskiy, Lin Ming 5615 5616Implemented a performance enhancement for namespace search and access. 5617This 5618change enhances the performance of namespace searches and walks by adding 5619a 5620backpointer to the parent in each namespace node. On large namespaces, 5621this 5622change can improve overall ACPI performance by up to 9X. Adding a pointer 5623to 5624each namespace node increases the overall size of the internal namespace 5625by 5626about 5%, since each namespace entry usually consists of both a namespace 5627node and an ACPI operand object. However, this is the first growth of the 5628namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 5629 5630Implemented a performance optimization that reduces the number of 5631namespace 5632walks. On control method exit, only walk the namespace if the method is 5633known 5634to have created namespace objects outside of its local scope. Previously, 5635the 5636entire namespace was traversed on each control method exit. This change 5637can 5638improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 5639Moore. 5640 5641Added support to truncate I/O addresses to 16 bits for Windows 5642compatibility. 5643Some ASL code has been seen in the field that inadvertently has bits set 5644above bit 15. This feature is optional and is enabled if the BIOS 5645requests 5646any Windows OSI strings. It can also be enabled by the host OS. Matthew 5647Garrett, Bob Moore. 5648 5649Added support to limit the maximum time for the ASL Sleep() operator. To 5650prevent accidental deep sleeps, limit the maximum time that Sleep() will 5651actually sleep. Configurable, the default maximum is two seconds. ACPICA 5652bugzilla 854. 5653 5654Added run-time validation support for the _WDG and_WED Microsoft 5655predefined 5656methods. These objects are defined by "Windows Instrumentation", and are 5657not 5658part of the ACPI spec. ACPICA BZ 860. 5659 5660Expanded all statistic counters used during namespace and device 5661initialization from 16 to 32 bits in order to support very large 5662namespaces. 5663 5664Replaced all instances of %d in printf format specifiers with %u since 5665nearly 5666all integers in ACPICA are unsigned. 5667 5668Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 5669returned 5670as AE_NO_HANDLER. 5671 5672Example Code and Data Size: These are the sizes for the OS-independent 5673acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5674debug version of the code includes the debug output trace mechanism and 5675has a 5676much larger code and data size. 5677 5678 Previous Release: 5679 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5680 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5681 Current Release: 5682 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 5683 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 5684 56852) iASL Compiler/Disassembler and Tools: 5686 5687iASL: Added compiler support for the _WDG and_WED Microsoft predefined 5688methods. These objects are defined by "Windows Instrumentation", and are 5689not 5690part of the ACPI spec. ACPICA BZ 860. 5691 5692AcpiExec: added option to disable the memory tracking mechanism. The -dt 5693option will disable the tracking mechanism, which improves performance 5694considerably. 5695 5696AcpiExec: Restructured the command line options into -d (disable) and -e 5697(enable) options. 5698 5699---------------------------------------- 570028 April 2010. Summary of changes for version 20100428: 5701 57021) ACPI CA Core Subsystem: 5703 5704Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 5705including FADT-based and GPE Block Devices, execute any _PRW methods in 5706the 5707new table, and process any _Lxx/_Exx GPE methods in the new table. Any 5708runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 5709immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 5710Devices. Provides compatibility with other ACPI implementations. Two new 5711files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 5712Moore. 5713 5714Fixed a regression introduced in version 20100331 within the table 5715manager 5716where initial table loading could fail. This was introduced in the fix 5717for 5718AcpiReallocateRootTable. Also, renamed some of fields in the table 5719manager 5720data structures to clarify their meaning and use. 5721 5722Fixed a possible allocation overrun during internal object copy in 5723AcpiUtCopySimpleObject. The original code did not correctly handle the 5724case 5725where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 5726847. 5727 5728Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 5729possible access beyond end-of-allocation. Also, now fully validate 5730descriptor 5731(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 5732 5733Example Code and Data Size: These are the sizes for the OS-independent 5734acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5735debug version of the code includes the debug output trace mechanism and 5736has a 5737much larger code and data size. 5738 5739 Previous Release: 5740 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5741 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5742 Current Release: 5743 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 5744 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 5745 57462) iASL Compiler/Disassembler and Tools: 5747 5748iASL: Implemented Min/Max/Len/Gran validation for address resource 5749descriptors. This change implements validation for the address fields 5750that 5751are common to all address-type resource descriptors. These checks are 5752implemented: Checks for valid Min/Max, length within the Min/Max window, 5753valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 5754per 5755table 6-40 in the ACPI 4.0a specification. Also split the large 5756aslrestype1.c 5757and aslrestype2.c files into five new files. ACPICA BZ 840. 5758 5759iASL: Added support for the _Wxx predefined names. This support was 5760missing 5761and these names were not recognized by the compiler as valid predefined 5762names. ACPICA BZ 851. 5763 5764iASL: Added an error for all predefined names that are defined to return 5765no 5766value and thus must be implemented as Control Methods. These include all 5767of 5768the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 5769names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 5770 5771iASL: Implemented the -ts option to emit hex AML data in ASL format, as 5772an 5773ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 5774be 5775dynamically loaded via the Load() operator. Also cleaned up output for 5776the 5777- 5778ta and -tc options. ACPICA BZ 853. 5779 5780Tests: Added a new file with examples of extended iASL error checking. 5781Demonstrates the advanced error checking ability of the iASL compiler. 5782Available at tests/misc/badcode.asl. 5783 5784---------------------------------------- 578531 March 2010. Summary of changes for version 20100331: 5786 57871) ACPI CA Core Subsystem: 5788 5789Completed a major update for the GPE support in order to improve support 5790for 5791shared GPEs and to simplify both host OS and ACPICA code. Added a 5792reference 5793count mechanism to support shared GPEs that require multiple device 5794drivers. 5795Several external interfaces have changed. One external interface has been 5796removed. One new external interface was added. Most of the GPE external 5797interfaces now use the GPE spinlock instead of the events mutex (and the 5798Flags parameter for many GPE interfaces has been removed.) See the 5799updated 5800ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 5801Rafael 5802Wysocki. ACPICA BZ 831. 5803 5804Changed: 5805 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 5806Removed: 5807 AcpiSetGpeType 5808New: 5809 AcpiSetGpe 5810 5811Implemented write support for DataTable operation regions. These regions 5812are 5813defined via the DataTableRegion() operator. Previously, only read support 5814was 5815implemented. The ACPI specification allows DataTableRegions to be 5816read/write, 5817however. 5818 5819Implemented a new subsystem option to force a copy of the DSDT to local 5820memory. Optionally copy the entire DSDT to local memory (instead of 5821simply 5822mapping it.) There are some (albeit very rare) BIOSs that corrupt or 5823replace 5824the original DSDT, creating the need for this option. Default is FALSE, 5825do 5826not copy the DSDT. 5827 5828Implemented detection of a corrupted or replaced DSDT. This change adds 5829support to detect a DSDT that has been corrupted and/or replaced from 5830outside 5831the OS (by firmware). This is typically catastrophic for the system, but 5832has 5833been seen on some machines. Once this problem has been detected, the DSDT 5834copy option can be enabled via system configuration. Lin Ming, Bob Moore. 5835 5836Fixed two problems with AcpiReallocateRootTable during the root table 5837copy. 5838When copying the root table to the new allocation, the length used was 5839incorrect. The new size was used instead of the current table size, 5840meaning 5841too much data was copied. Also, the count of available slots for ACPI 5842tables 5843was not set correctly. Alexey Starikovskiy, Bob Moore. 5844 5845Example Code and Data Size: These are the sizes for the OS-independent 5846acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5847debug version of the code includes the debug output trace mechanism and 5848has a 5849much larger code and data size. 5850 5851 Previous Release: 5852 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5853 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5854 Current Release: 5855 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5856 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5857 58582) iASL Compiler/Disassembler and Tools: 5859 5860iASL: Implement limited typechecking for values returned from predefined 5861control methods. The type of any returned static (unnamed) object is now 5862validated. For example, Return(1). ACPICA BZ 786. 5863 5864iASL: Fixed a predefined name object verification regression. Fixes a 5865problem 5866introduced in version 20100304. An error is incorrectly generated if a 5867predefined name is declared as a static named object with a value defined 5868using the keywords "Zero", "One", or "Ones". Lin Ming. 5869 5870iASL: Added Windows 7 support for the -g option (get local ACPI tables) 5871by 5872reducing the requested registry access rights. ACPICA BZ 842. 5873 5874Disassembler: fixed a possible fault when generating External() 5875statements. 5876Introduced in commit ae7d6fd: Properly handle externals with parent- 5877prefix 5878(carat). Fixes a string length allocation calculation. Lin Ming. 5879 5880---------------------------------------- 588104 March 2010. Summary of changes for version 20100304: 5882 58831) ACPI CA Core Subsystem: 5884 5885Fixed a possible problem with the AML Mutex handling function 5886AcpiExReleaseMutex where the function could fault under the very rare 5887condition when the interpreter has blocked, the interpreter lock is 5888released, 5889the interpreter is then reentered via the same thread, and attempts to 5890acquire an AML mutex that was previously acquired. FreeBSD report 140979. 5891Lin 5892Ming. 5893 5894Implemented additional configuration support for the AML "Debug Object". 5895Output from the debug object can now be enabled via a global variable, 5896AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 5897debugging. 5898This debug output is now available in the release version of ACPICA 5899instead 5900of just the debug version. Also, the entire debug output module can now 5901be 5902configured out of the ACPICA build if desired. One new file added, 5903executer/exdebug.c. Lin Ming, Bob Moore. 5904 5905Added header support for the ACPI MCHI table (Management Controller Host 5906Interface Table). This table was added in ACPI 4.0, but the defining 5907document 5908has only recently become available. 5909 5910Standardized output of integer values for ACPICA warnings/errors. Always 5911use 59120x prefix for hex output, always use %u for unsigned integer decimal 5913output. 5914Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 5915400 5916invocations.) These invocations were converted from the original 5917ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 5918 5919Example Code and Data Size: These are the sizes for the OS-independent 5920acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5921debug version of the code includes the debug output trace mechanism and 5922has a 5923much larger code and data size. 5924 5925 Previous Release: 5926 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5927 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5928 Current Release: 5929 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5930 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5931 59322) iASL Compiler/Disassembler and Tools: 5933 5934iASL: Implemented typechecking support for static (non-control method) 5935predefined named objects that are declared with the Name() operator. For 5936example, the type of this object is now validated to be of type Integer: 5937Name(_BBN, 1). This change migrates the compiler to using the core 5938predefined 5939name table instead of maintaining a local version. Added a new file, 5940aslpredef.c. ACPICA BZ 832. 5941 5942Disassembler: Added support for the ACPI 4.0 MCHI table. 5943 5944---------------------------------------- 594521 January 2010. Summary of changes for version 20100121: 5946 59471) ACPI CA Core Subsystem: 5948 5949Added the 2010 copyright to all module headers and signons. This affects 5950virtually every file in the ACPICA core subsystem, the iASL compiler, the 5951tools/utilities, and the test suites. 5952 5953Implemented a change to the AcpiGetDevices interface to eliminate 5954unnecessary 5955invocations of the _STA method. In the case where a specific _HID is 5956requested, do not run _STA until a _HID match is found. This eliminates 5957potentially dozens of _STA calls during a search for a particular 5958device/HID, 5959which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 5960 5961Implemented an additional repair for predefined method return values. 5962Attempt 5963to repair unexpected NULL elements within returned Package objects. 5964Create 5965an 5966Integer of value zero, a NULL String, or a zero-length Buffer as 5967appropriate. 5968ACPICA BZ 818. Lin Ming, Bob Moore. 5969 5970Removed the obsolete ACPI_INTEGER data type. This type was introduced as 5971the 5972code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 5973(with 597464-bit AML integers). It is now obsolete and this change removes it from 5975the 5976ACPICA code base, replaced by UINT64. The original typedef has been 5977retained 5978for now for compatibility with existing device driver code. ACPICA BZ 5979824. 5980 5981Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 5982in 5983the parse tree object. 5984 5985Added additional warning options for the gcc-4 generation. Updated the 5986source 5987accordingly. This includes some code restructuring to eliminate 5988unreachable 5989code, elimination of some gotos, elimination of unused return values, 5990some 5991additional casting, and removal of redundant declarations. 5992 5993Example Code and Data Size: These are the sizes for the OS-independent 5994acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5995debug version of the code includes the debug output trace mechanism and 5996has a 5997much larger code and data size. 5998 5999 Previous Release: 6000 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6001 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6002 Current Release: 6003 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 6004 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 6005 60062) iASL Compiler/Disassembler and Tools: 6007 6008No functional changes for this release. 6009 6010---------------------------------------- 601114 December 2009. Summary of changes for version 20091214: 6012 60131) ACPI CA Core Subsystem: 6014 6015Enhanced automatic data type conversions for predefined name repairs. 6016This 6017change expands the automatic repairs/conversions for predefined name 6018return 6019values to make Integers, Strings, and Buffers fully interchangeable. 6020Also, 6021a 6022Buffer can be converted to a Package of Integers if necessary. The 6023nsrepair.c 6024module was completely restructured. Lin Ming, Bob Moore. 6025 6026Implemented automatic removal of null package elements during predefined 6027name 6028repairs. This change will automatically remove embedded and trailing NULL 6029package elements from returned package objects that are defined to 6030contain 6031a 6032variable number of sub-packages. The driver is then presented with a 6033package 6034with no null elements to deal with. ACPICA BZ 819. 6035 6036Implemented a repair for the predefined _FDE and _GTM names. The expected 6037return value for both names is a Buffer of 5 DWORDs. This repair fixes 6038two 6039possible problems (both seen in the field), where a package of integers 6040is 6041returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 6042Kim. 6043 6044Implemented additional module-level code support. This change will 6045properly 6046execute module-level code that is not at the root of the namespace (under 6047a 6048Device object, etc.). Now executes the code within the current scope 6049instead 6050of the root. ACPICA BZ 762. Lin Ming. 6051 6052Fixed possible mutex acquisition errors when running _REG methods. Fixes 6053a 6054problem where mutex errors can occur when running a _REG method that is 6055in 6056the same scope as a method-defined operation region or an operation 6057region 6058under a module-level IF block. This type of code is rare, so the problem 6059has 6060not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 6061 6062Fixed a possible memory leak during module-level code execution. An 6063object 6064could be leaked for each block of executed module-level code if the 6065interpreter slack mode is enabled This change deletes any implicitly 6066returned 6067object from the module-level code block. Lin Ming. 6068 6069Removed messages for successful predefined repair(s). The repair 6070mechanism 6071was considered too wordy. Now, messages are only unconditionally emitted 6072if 6073the return object cannot be repaired. Existing messages for successful 6074repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 6075827. 6076 6077Example Code and Data Size: These are the sizes for the OS-independent 6078acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6079debug version of the code includes the debug output trace mechanism and 6080has a 6081much larger code and data size. 6082 6083 Previous Release: 6084 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6085 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6086 Current Release: 6087 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 6088 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 6089 60902) iASL Compiler/Disassembler and Tools: 6091 6092iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 6093files 6094were no longer automatically removed at the termination of the compile. 6095 6096acpiexec: Implemented the -f option to specify default region fill value. 6097This option specifies the value used to initialize buffers that simulate 6098operation regions. Default value is zero. Useful for debugging problems 6099that 6100depend on a specific initial value for a region or field. 6101 6102---------------------------------------- 610312 November 2009. Summary of changes for version 20091112: 6104 61051) ACPI CA Core Subsystem: 6106 6107Implemented a post-order callback to AcpiWalkNamespace. The existing 6108interface only has a pre-order callback. This change adds an additional 6109parameter for a post-order callback which will be more useful for bus 6110scans. 6111ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 6112 6113Modified the behavior of the operation region memory mapping cache for 6114SystemMemory. Ensure that the memory mappings created for operation 6115regions 6116do not cross 4K page boundaries. Crossing a page boundary while mapping 6117regions can cause kernel warnings on some hosts if the pages have 6118different 6119attributes. Such regions are probably BIOS bugs, and this is the 6120workaround. 6121Linux BZ 14445. Lin Ming. 6122 6123Implemented an automatic repair for predefined methods that must return 6124sorted lists. This change will repair (by sorting) packages returned by 6125_ALR, 6126_PSS, and _TSS. Drivers can now assume that the packages are correctly 6127sorted 6128and do not contain NULL package elements. Adds one new file, 6129namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 6130 6131Fixed a possible fault during predefined name validation if a return 6132Package 6133object contains NULL elements. Also adds a warning if a NULL element is 6134followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 6135may 6136include repair or removal of all such NULL elements where possible. 6137 6138Implemented additional module-level executable AML code support. This 6139change 6140will execute module-level code that is not at the root of the namespace 6141(under a Device object, etc.) at table load time. Module-level executable 6142AML 6143code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 6144 6145Implemented a new internal function to create Integer objects. This 6146function 6147simplifies miscellaneous object creation code. ACPICA BZ 823. 6148 6149Reduced the severity of predefined repair messages, Warning to Info. 6150Since 6151the object was successfully repaired, a warning is too severe. Reduced to 6152an 6153info message for now. These messages may eventually be changed to debug- 6154only. 6155ACPICA BZ 812. 6156 6157Example Code and Data Size: These are the sizes for the OS-independent 6158acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6159debug version of the code includes the debug output trace mechanism and 6160has a 6161much larger code and data size. 6162 6163 Previous Release: 6164 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6165 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6166 Current Release: 6167 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 6168 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 6169 61702) iASL Compiler/Disassembler and Tools: 6171 6172iASL: Implemented Switch() with While(1) so that Break works correctly. 6173This 6174change correctly implements the Switch operator with a surrounding 6175While(1) 6176so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 6177 6178iASL: Added a message if a package initializer list is shorter than 6179package 6180length. Adds a new remark for a Package() declaration if an initializer 6181list 6182exists, but is shorter than the declared length of the package. Although 6183technically legal, this is probably a coding error and it is seen in the 6184field. ACPICA BZ 815. Lin Ming, Bob Moore. 6185 6186iASL: Fixed a problem where the compiler could fault after the maximum 6187number 6188of errors was reached (200). 6189 6190acpixtract: Fixed a possible warning for pointer cast if the compiler 6191warning 6192level set very high. 6193 6194---------------------------------------- 619513 October 2009. Summary of changes for version 20091013: 6196 61971) ACPI CA Core Subsystem: 6198 6199Fixed a problem where an Operation Region _REG method could be executed 6200more 6201than once. If a custom address space handler is installed by the host 6202before 6203the "initialize operation regions" phase of the ACPICA initialization, 6204any 6205_REG methods for that address space could be executed twice. This change 6206fixes the problem. ACPICA BZ 427. Lin Ming. 6207 6208Fixed a possible memory leak for the Scope() ASL operator. When the exact 6209invocation of "Scope(\)" is executed (change scope to root), one internal 6210operand object was leaked. Lin Ming. 6211 6212Implemented a run-time repair for the _MAT predefined method. If the _MAT 6213return value is defined as a Field object in the AML, and the field 6214size is less than or equal to the default width of an integer (32 or 621564),_MAT 6216can incorrectly return an Integer instead of a Buffer. ACPICA now 6217automatically repairs this problem. ACPICA BZ 810. 6218 6219Implemented a run-time repair for the _BIF and _BIX predefined methods. 6220The 6221"OEM Information" field is often incorrectly returned as an Integer with 6222value zero if the field is not supported by the platform. This is due to 6223an 6224ambiguity in the ACPI specification. The field should always be a string. 6225ACPICA now automatically repairs this problem by returning a NULL string 6226within the returned Package. ACPICA BZ 807. 6227 6228Example Code and Data Size: These are the sizes for the OS-independent 6229acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6230debug version of the code includes the debug output trace mechanism and 6231has a 6232much larger code and data size. 6233 6234 Previous Release: 6235 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6236 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6237 Current Release: 6238 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 6239 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 6240 62412) iASL Compiler/Disassembler and Tools: 6242 6243Disassembler: Fixed a problem where references to external symbols that 6244contained one or more parent-prefixes (carats) were not handled 6245correctly, 6246possibly causing a fault. ACPICA BZ 806. Lin Ming. 6247 6248Disassembler: Restructured the code so that all functions that handle 6249external symbols are in a single module. One new file is added, 6250common/dmextern.c. 6251 6252AML Debugger: Added a max count argument for the Batch command (which 6253executes multiple predefined methods within the namespace.) 6254 6255iASL: Updated the compiler documentation (User Reference.) Available at 6256http://www.acpica.org/documentation/. ACPICA BZ 750. 6257 6258AcpiXtract: Updated for Lint and other formatting changes. Close all open 6259files. 6260 6261---------------------------------------- 626203 September 2009. Summary of changes for version 20090903: 6263 62641) ACPI CA Core Subsystem: 6265 6266For Windows Vista compatibility, added the automatic execution of an _INI 6267method located at the namespace root (\_INI). This method is executed at 6268table load time. This support is in addition to the automatic execution 6269of 6270\_SB._INI. Lin Ming. 6271 6272Fixed a possible memory leak in the interpreter for AML package objects 6273if 6274the package initializer list is longer than the defined size of the 6275package. 6276This apparently can only happen if the BIOS changes the package size on 6277the 6278fly (seen in a _PSS object), as ASL compilers do not allow this. The 6279interpreter will truncate the package to the defined size (and issue an 6280error 6281message), but previously could leave the extra objects undeleted if they 6282were 6283pre-created during the argument processing (such is the case if the 6284package 6285consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 6286 6287Fixed a problem seen when a Buffer or String is stored to itself via ASL. 6288This has been reported in the field. Previously, ACPICA would zero out 6289the 6290buffer/string. Now, the operation is treated as a noop. Provides Windows 6291compatibility. ACPICA BZ 803. Lin Ming. 6292 6293Removed an extraneous error message for ASL constructs of the form 6294Store(LocalX,LocalX) when LocalX is uninitialized. These curious 6295statements 6296are seen in many BIOSs and are once again treated as NOOPs and no error 6297is 6298emitted when they are encountered. ACPICA BZ 785. 6299 6300Fixed an extraneous warning message if a _DSM reserved method returns a 6301Package object. _DSM can return any type of object, so validation on the 6302return type cannot be performed. ACPICA BZ 802. 6303 6304Example Code and Data Size: These are the sizes for the OS-independent 6305acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6306debug version of the code includes the debug output trace mechanism and 6307has a 6308much larger code and data size. 6309 6310 Previous Release: 6311 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6312 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6313 Current Release: 6314 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 6315 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 6316 63172) iASL Compiler/Disassembler and Tools: 6318 6319iASL: Fixed a problem with the use of the Alias operator and Resource 6320Templates. The correct alias is now constructed and no error is emitted. 6321ACPICA BZ 738. 6322 6323iASL: Implemented the -I option to specify additional search directories 6324for 6325include files. Allows multiple additional search paths for include files. 6326Directories are searched in the order specified on the command line 6327(after 6328the local directory is searched.) ACPICA BZ 800. 6329 6330iASL: Fixed a problem where the full pathname for include files was not 6331emitted for warnings/errors. This caused the IDE support to not work 6332properly. ACPICA BZ 765. 6333 6334iASL: Implemented the -@ option to specify a Windows-style response file 6335containing additional command line options. ACPICA BZ 801. 6336 6337AcpiExec: Added support to load multiple AML files simultaneously (such 6338as 6339a 6340DSDT and multiple SSDTs). Also added support for wildcards within the AML 6341pathname. These features allow all machine tables to be easily loaded and 6342debugged together. ACPICA BZ 804. 6343 6344Disassembler: Added missing support for disassembly of HEST table Error 6345Bank 6346subtables. 6347 6348---------------------------------------- 634930 July 2009. Summary of changes for version 20090730: 6350 6351The ACPI 4.0 implementation for ACPICA is complete with this release. 6352 63531) ACPI CA Core Subsystem: 6354 6355ACPI 4.0: Added header file support for all new and changed ACPI tables. 6356Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 6357new 6358for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 6359BERT, 6360EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 6361There 6362have been some ACPI 4.0 changes to other existing tables. Split the large 6363actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 6364 6365ACPI 4.0: Implemented predefined name validation for all new names. There 6366are 636731 new names in ACPI 4.0. The predefined validation module was split into 6368two 6369files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 6370 6371Implemented support for so-called "module-level executable code". This is 6372executable AML code that exists outside of any control method and is 6373intended 6374to be executed at table load time. Although illegal since ACPI 2.0, this 6375type 6376of code still exists and is apparently still being created. Blocks of 6377this 6378code are now detected and executed as intended. Currently, the code 6379blocks 6380must exist under either an If, Else, or While construct; these are the 6381typical cases seen in the field. ACPICA BZ 762. Lin Ming. 6382 6383Implemented an automatic dynamic repair for predefined names that return 6384nested Package objects. This applies to predefined names that are defined 6385to 6386return a variable-length Package of sub-packages. If the number of sub- 6387packages is one, BIOS code is occasionally seen that creates a simple 6388single 6389package with no sub-packages. This code attempts to fix the problem by 6390wrapping a new package object around the existing package. These methods 6391can 6392be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 6393BZ 6394790. 6395 6396Fixed a regression introduced in 20090625 for the AcpiGetDevices 6397interface. 6398The _HID/_CID matching was broken and no longer matched IDs correctly. 6399ACPICA 6400BZ 793. 6401 6402Fixed a problem with AcpiReset where the reset would silently fail if the 6403register was one of the protected I/O ports. AcpiReset now bypasses the 6404port 6405validation mechanism. This may eventually be driven into the 6406AcpiRead/Write 6407interfaces. 6408 6409Fixed a regression related to the recent update of the AcpiRead/Write 6410interfaces. A sleep/suspend could fail if the optional PM2 Control 6411register 6412does not exist during an attempt to write the Bus Master Arbitration bit. 6413(However, some hosts already delete the code that writes this bit, and 6414the 6415code may in fact be obsolete at this date.) ACPICA BZ 799. 6416 6417Fixed a problem where AcpiTerminate could fault if inadvertently called 6418twice 6419in succession. ACPICA BZ 795. 6420 6421Example Code and Data Size: These are the sizes for the OS-independent 6422acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6423debug version of the code includes the debug output trace mechanism and 6424has a 6425much larger code and data size. 6426 6427 Previous Release: 6428 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6429 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6430 Current Release: 6431 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 6432 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 6433 64342) iASL Compiler/Disassembler and Tools: 6435 6436ACPI 4.0: Implemented disassembler support for all new ACPI tables and 6437changes to existing tables. ACPICA BZ 775. 6438 6439---------------------------------------- 644025 June 2009. Summary of changes for version 20090625: 6441 6442The ACPI 4.0 Specification was released on June 16 and is available at 6443www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 6444continue for the next few releases. 6445 64461) ACPI CA Core Subsystem: 6447 6448ACPI 4.0: Implemented interpreter support for the IPMI operation region 6449address space. Includes support for bi-directional data buffers and an 6450IPMI 6451address space handler (to be installed by an IPMI device driver.) ACPICA 6452BZ 6453773. Lin Ming. 6454 6455ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 6456Includes 6457support in both the header files and the disassembler. 6458 6459Completed a major update for the AcpiGetObjectInfo external interface. 6460Changes include: 6461 - Support for variable, unlimited length HID, UID, and CID strings. 6462 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 6463etc.) 6464 - Call the _SxW power methods on behalf of a device object. 6465 - Determine if a device is a PCI root bridge. 6466 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 6467These changes will require an update to all callers of this interface. 6468See 6469the updated ACPICA Programmer Reference for details. One new source file 6470has 6471been added - utilities/utids.c. ACPICA BZ 368, 780. 6472 6473Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 6474transfers. The Value parameter has been extended from 32 bits to 64 bits 6475in 6476order to support new ACPI 4.0 tables. These changes will require an 6477update 6478to 6479all callers of these interfaces. See the ACPICA Programmer Reference for 6480details. ACPICA BZ 768. 6481 6482Fixed several problems with AcpiAttachData. The handler was not invoked 6483when 6484the host node was deleted. The data sub-object was not automatically 6485deleted 6486when the host node was deleted. The interface to the handler had an 6487unused 6488parameter, this was removed. ACPICA BZ 778. 6489 6490Enhanced the function that dumps ACPI table headers. All non-printable 6491characters in the string fields are now replaced with '?' (Signature, 6492OemId, 6493OemTableId, and CompilerId.) ACPI tables with non-printable characters in 6494these fields are occasionally seen in the field. ACPICA BZ 788. 6495 6496Fixed a problem with predefined method repair code where the code that 6497attempts to repair/convert an object of incorrect type is only executed 6498on 6499the first time the predefined method is called. The mechanism that 6500disables 6501warnings on subsequent calls was interfering with the repair mechanism. 6502ACPICA BZ 781. 6503 6504Fixed a possible memory leak in the predefined validation/repair code 6505when 6506a 6507buffer is automatically converted to an expected string object. 6508 6509Removed obsolete 16-bit files from the distribution and from the current 6510git 6511tree head. ACPICA BZ 776. 6512 6513Example Code and Data Size: These are the sizes for the OS-independent 6514acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6515debug version of the code includes the debug output trace mechanism and 6516has a 6517much larger code and data size. 6518 6519 Previous Release: 6520 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6521 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6522 Current Release: 6523 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 6524 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 6525 65262) iASL Compiler/Disassembler and Tools: 6527 6528ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 6529operation region keyword. ACPICA BZ 771, 772. Lin Ming. 6530 6531ACPI 4.0: iASL - implemented compile-time validation support for all new 6532predefined names and control methods (31 total). ACPICA BZ 769. 6533 6534---------------------------------------- 653521 May 2009. Summary of changes for version 20090521: 6536 65371) ACPI CA Core Subsystem: 6538 6539Disabled the preservation of the SCI enable bit in the PM1 control 6540register. 6541The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 6542to 6543be 6544a "preserved" bit - "OSPM always preserves this bit position", section 65454.7.3.2.1. However, some machines fail if this bit is in fact preserved 6546because the bit needs to be explicitly set by the OS as a workaround. No 6547machines fail if the bit is not preserved. Therefore, ACPICA no longer 6548attempts to preserve this bit. 6549 6550Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 6551incorrectly formed _PRT package could cause a fault. Added validation to 6552ensure that each package element is actually a sub-package. 6553 6554Implemented a new interface to install or override a single control 6555method, 6556AcpiInstallMethod. This interface is useful when debugging in order to 6557repair 6558an existing method or to install a missing method without having to 6559override 6560the entire ACPI table. See the ACPICA Programmer Reference for use and 6561examples. Lin Ming, Bob Moore. 6562 6563Fixed several reference count issues with the DdbHandle object that is 6564created from a Load or LoadTable operator. Prevent premature deletion of 6565the 6566object. Also, mark the object as invalid once the table has been 6567unloaded. 6568This is needed because the handle itself may not be deleted after the 6569table 6570unload, depending on whether it has been stored in a named object by the 6571caller. Lin Ming. 6572 6573Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 6574mutexes of the same sync level are acquired but then not released in 6575strict 6576opposite order, the internally maintained Current Sync Level becomes 6577confused 6578and can cause subsequent execution errors. ACPICA BZ 471. 6579 6580Changed the allowable release order for ASL mutex objects. The ACPI 4.0 6581specification has been changed to make the SyncLevel for mutex objects 6582more 6583useful. When releasing a mutex, the SyncLevel of the mutex must now be 6584the 6585same as the current sync level. This makes more sense than the previous 6586rule 6587(SyncLevel less than or equal). This change updates the code to match the 6588specification. 6589 6590Fixed a problem with the local version of the AcpiOsPurgeCache function. 6591The 6592(local) cache must be locked during all cache object deletions. Andrew 6593Baumann. 6594 6595Updated the Load operator to use operation region interfaces. This 6596replaces 6597direct memory mapping with region access calls. Now, all region accesses 6598go 6599through the installed region handler as they should. 6600 6601Simplified and optimized the NsGetNextNode function. Reduced parameter 6602count 6603and reduced code for this frequently used function. 6604 6605Example Code and Data Size: These are the sizes for the OS-independent 6606acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6607debug version of the code includes the debug output trace mechanism and 6608has a 6609much larger code and data size. 6610 6611 Previous Release: 6612 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6613 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6614 Current Release: 6615 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 6616 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 6617 66182) iASL Compiler/Disassembler and Tools: 6619 6620Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 6621problems 6622with sub-table disassembly and handling invalid sub-tables. Attempt 6623recovery 6624after an invalid sub-table ID. 6625 6626---------------------------------------- 662722 April 2009. Summary of changes for version 20090422: 6628 66291) ACPI CA Core Subsystem: 6630 6631Fixed a compatibility issue with the recently released I/O port 6632protection 6633mechanism. For windows compatibility, 1) On a port protection violation, 6634simply ignore the request and do not return an exception (allow the 6635control 6636method to continue execution.) 2) If only part of the request overlaps a 6637protected port, read/write the individual ports that are not protected. 6638Linux 6639BZ 13036. Lin Ming 6640 6641Enhanced the execution of the ASL/AML BreakPoint operator so that it 6642actually 6643breaks into the AML debugger if the debugger is present. This matches the 6644ACPI-defined behavior. 6645 6646Fixed several possible warnings related to the use of the configurable 6647ACPI_THREAD_ID. This type can now be configured as either an integer or a 6648pointer with no warnings. Also fixes several warnings in printf-like 6649statements for the 64-bit build when the type is configured as a pointer. 6650ACPICA BZ 766, 767. 6651 6652Fixed a number of possible warnings when compiling with gcc 4+ (depending 6653on 6654warning options.) Examples include printf formats, aliasing, unused 6655globals, 6656missing prototypes, missing switch default statements, use of non-ANSI 6657library functions, use of non-ANSI constructs. See generate/unix/Makefile 6658for 6659a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 6660 6661Example Code and Data Size: These are the sizes for the OS-independent 6662acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6663debug version of the code includes the debug output trace mechanism and 6664has a 6665much larger code and data size. 6666 6667 Previous Release: 6668 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6669 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6670 Current Release: 6671 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 6672 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 6673 66742) iASL Compiler/Disassembler and Tools: 6675 6676iASL: Fixed a generation warning from Bison 2.3 and fixed several 6677warnings 6678on 6679the 64-bit build. 6680 6681iASL: Fixed a problem where the Unix/Linux versions of the compiler could 6682not 6683correctly digest Windows/DOS formatted files (with CR/LF). 6684 6685iASL: Added a new option for "quiet mode" (-va) that produces only the 6686compilation summary, not individual errors and warnings. Useful for large 6687batch compilations. 6688 6689AcpiExec: Implemented a new option (-z) to enable a forced 6690semaphore/mutex 6691timeout that can be used to detect hang conditions during execution of 6692AML 6693code (includes both internal semaphores and AML-defined mutexes and 6694events.) 6695 6696Added new makefiles for the generation of acpica in a generic unix-like 6697environment. These makefiles are intended to generate the acpica tools 6698and 6699utilities from the original acpica git source tree structure. 6700 6701Test Suites: Updated and cleaned up the documentation files. Updated the 6702copyrights to 2009, affecting all source files. Use the new version of 6703iASL 6704with quiet mode. Increased the number of available semaphores in the 6705Windows 6706OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 6707added 6708an alternate implementation of the semaphore timeout to allow aslts to 6709execute fully on Cygwin. 6710 6711---------------------------------------- 671220 March 2009. Summary of changes for version 20090320: 6713 67141) ACPI CA Core Subsystem: 6715 6716Fixed a possible race condition between AcpiWalkNamespace and dynamic 6717table 6718unloads. Added a reader/writer locking mechanism to allow multiple 6719concurrent 6720namespace walks (readers), but block a dynamic table unload until it can 6721gain 6722exclusive write access to the namespace. This fixes a problem where a 6723table 6724unload could (possibly catastrophically) delete the portion of the 6725namespace 6726that is currently being examined by a walk. Adds a new file, utlock.c, 6727that 6728implements the reader/writer lock mechanism. ACPICA BZ 749. 6729 6730Fixed a regression introduced in version 20090220 where a change to the 6731FADT 6732handling could cause the ACPICA subsystem to access non-existent I/O 6733ports. 6734 6735Modified the handling of FADT register and table (FACS/DSDT) addresses. 6736The 6737FADT can contain both 32-bit and 64-bit versions of these addresses. 6738Previously, the 64-bit versions were favored, meaning that if both 32 and 673964 6740versions were valid, but not equal, the 64-bit version was used. This was 6741found to cause some machines to fail. Now, in this case, the 32-bit 6742version 6743is used instead. This now matches the Windows behavior. 6744 6745Implemented a new mechanism to protect certain I/O ports. Provides 6746Microsoft 6747compatibility and protects the standard PC I/O ports from access via AML 6748code. Adds a new file, hwvalid.c 6749 6750Fixed a possible extraneous warning message from the FADT support. The 6751message warns of a 32/64 length mismatch between the legacy and GAS 6752definitions for a register. 6753 6754Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 6755is 6756made obsolete by the port protection mechanism above. It was previously 6757used 6758to validate the entire address range of an operation region, which could 6759be 6760incorrect if the range included illegal ports, but fields within the 6761operation region did not actually access those ports. Validation is now 6762performed on a per-field basis instead of the entire region. 6763 6764Modified the handling of the PM1 Status Register ignored bit (bit 11.) 6765Ignored bits must be "preserved" according to the ACPI spec. Usually, 6766this 6767means a read/modify/write when writing to the register. However, for 6768status 6769registers, writing a one means clear the event. Writing a zero means 6770preserve 6771the event (do not clear.) This behavior is clarified in the ACPI 4.0 6772spec, 6773and the ACPICA code now simply always writes a zero to the ignored bit. 6774 6775Modified the handling of ignored bits for the PM1 A/B Control Registers. 6776As 6777per the ACPI specification, for the control registers, preserve 6778(read/modify/write) all bits that are defined as either reserved or 6779ignored. 6780 6781Updated the handling of write-only bits in the PM1 A/B Control Registers. 6782When reading the register, zero the write-only bits as per the ACPI spec. 6783ACPICA BZ 443. Lin Ming. 6784 6785Removed "Linux" from the list of supported _OSI strings. Linux no longer 6786wants to reply true to this request. The Windows strings are the only 6787paths 6788through the AML that are tested and known to work properly. 6789 6790 Previous Release: 6791 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6792 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6793 Current Release: 6794 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6795 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6796 67972) iASL Compiler/Disassembler and Tools: 6798 6799Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 6800and 6801aetables.c 6802 6803---------------------------------------- 680420 February 2009. Summary of changes for version 20090220: 6805 68061) ACPI CA Core Subsystem: 6807 6808Optimized the ACPI register locking. Removed locking for reads from the 6809ACPI 6810bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 6811is 6812not required when reading the single-bit registers. The 6813AcpiGetRegisterUnlocked function is no longer needed and has been 6814removed. 6815This will improve performance for reads on these registers. ACPICA BZ 6816760. 6817 6818Fixed the parameter validation for AcpiRead/Write. Now return 6819AE_BAD_PARAMETER if the input register pointer is null, and 6820AE_BAD_ADDRESS 6821if 6822the register has an address of zero. Previously, these cases simply 6823returned 6824AE_OK. For optional registers such as PM1B status/enable/control, the 6825caller 6826should check for a valid register address before calling. ACPICA BZ 748. 6827 6828Renamed the external ACPI bit register access functions. Renamed 6829AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 6830functions. The new names are AcpiReadBitRegister and 6831AcpiWriteBitRegister. 6832Also, restructured the code for these functions by simplifying the code 6833path 6834and condensing duplicate code to reduce code size. 6835 6836Added new functions to transparently handle the possibly split PM1 A/B 6837registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 6838functions 6839now handle the split registers for PM1 Status, Enable, and Control. 6840ACPICA 6841BZ 6842746. 6843 6844Added a function to handle the PM1 control registers, 6845AcpiHwWritePm1Control. 6846This function writes both of the PM1 control registers (A/B). These 6847registers 6848are different than the PM1 A/B status and enable registers in that 6849different 6850values can be written to the A/B registers. Most notably, the SLP_TYP 6851bits 6852can be different, as per the values returned from the _Sx predefined 6853methods. 6854 6855Removed an extra register write within AcpiHwClearAcpiStatus. This 6856function 6857was writing an optional PM1B status register twice. The existing call to 6858the 6859low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 6860A/B 6861register. ACPICA BZ 751. 6862 6863Split out the PM1 Status registers from the FADT. Added new globals for 6864these 6865registers (A/B), similar to the way the PM1 Enable registers are handled. 6866Instead of overloading the FADT Event Register blocks. This makes the 6867code 6868clearer and less prone to error. 6869 6870Fixed the warning message for when the platform contains too many ACPI 6871tables 6872for the default size of the global root table data structure. The 6873calculation 6874for the truncation value was incorrect. 6875 6876Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 6877obsolete macro, since it is now a simple reference to ->common.type. 6878There 6879were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 6880 6881Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 6882TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 6883simply SLEEP_TYPE. ACPICA BZ 754. 6884 6885Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 6886function is only needed on 64-bit host operating systems and is thus not 6887included for 32-bit hosts. 6888 6889Debug output: print the input and result for invocations of the _OSI 6890reserved 6891control method via the ACPI_LV_INFO debug level. Also, reduced some of 6892the 6893verbosity of this debug level. Len Brown. 6894 6895Example Code and Data Size: These are the sizes for the OS-independent 6896acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6897debug version of the code includes the debug output trace mechanism and 6898has a 6899much larger code and data size. 6900 6901 Previous Release: 6902 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6903 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6904 Current Release: 6905 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6906 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6907 69082) iASL Compiler/Disassembler and Tools: 6909 6910Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 6911various legal performance profiles. 6912 6913---------------------------------------- 691423 January 2009. Summary of changes for version 20090123: 6915 69161) ACPI CA Core Subsystem: 6917 6918Added the 2009 copyright to all module headers and signons. This affects 6919virtually every file in the ACPICA core subsystem, the iASL compiler, and 6920the tools/utilities. 6921 6922Implemented a change to allow the host to override any ACPI table, 6923including 6924dynamically loaded tables. Previously, only the DSDT could be replaced by 6925the 6926host. With this change, the AcpiOsTableOverride interface is called for 6927each 6928table found in the RSDT/XSDT during ACPICA initialization, and also 6929whenever 6930a table is dynamically loaded via the AML Load operator. 6931 6932Updated FADT flag definitions, especially the Boot Architecture flags. 6933 6934Debugger: For the Find command, automatically pad the input ACPI name 6935with 6936underscores if the name is shorter than 4 characters. This enables a 6937match 6938with the actual namespace entry which is itself padded with underscores. 6939 6940Example Code and Data Size: These are the sizes for the OS-independent 6941acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6942debug version of the code includes the debug output trace mechanism and 6943has a 6944much larger code and data size. 6945 6946 Previous Release: 6947 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6948 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6949 Current Release: 6950 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6951 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6952 69532) iASL Compiler/Disassembler and Tools: 6954 6955Fix build error under Bison-2.4. 6956 6957Dissasembler: Enhanced FADT support. Added decoding of the Boot 6958Architecture 6959flags. Now decode all flags, regardless of the FADT version. Flag output 6960includes the FADT version which first defined each flag. 6961 6962The iASL -g option now dumps the RSDT to a file (in addition to the FADT 6963and 6964DSDT). Windows only. 6965 6966---------------------------------------- 696704 December 2008. Summary of changes for version 20081204: 6968 69691) ACPI CA Core Subsystem: 6970 6971The ACPICA Programmer Reference has been completely updated and revamped 6972for 6973this release. This includes updates to the external interfaces, OSL 6974interfaces, the overview sections, and the debugger reference. 6975 6976Several new ACPICA interfaces have been implemented and documented in the 6977programmer reference: 6978AcpiReset - Writes the reset value to the FADT-defined reset register. 6979AcpiDisableAllGpes - Disable all available GPEs. 6980AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 6981AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 6982AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 6983AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 6984AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 6985 6986Most of the public ACPI hardware-related interfaces have been moved to a 6987new 6988file, components/hardware/hwxface.c 6989 6990Enhanced the FADT parsing and low-level ACPI register access: The ACPI 6991register lengths within the FADT are now used, and the low level ACPI 6992register access no longer hardcodes the ACPI register lengths. Given that 6993there may be some risk in actually trusting the FADT register lengths, a 6994run- 6995time option was added to fall back to the default hardcoded lengths if 6996the 6997FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 6998option is set to true for now, and a warning is issued if a suspicious 6999FADT 7000register length is overridden with the default value. 7001 7002Fixed a reference count issue in NsRepairObject. This problem was 7003introduced 7004in version 20081031 as part of a fix to repair Buffer objects within 7005Packages. Lin Ming. 7006 7007Added semaphore support to the Linux/Unix application OS-services layer 7008(OSL). ACPICA BZ 448. Lin Ming. 7009 7010Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 7011will 7012be implemented in the OSL, or will binary semaphores be used instead. 7013 7014Example Code and Data Size: These are the sizes for the OS-independent 7015acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7016debug version of the code includes the debug output trace mechanism and 7017has a 7018much larger code and data size. 7019 7020 Previous Release: 7021 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7022 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7023 Current Release: 7024 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 7025 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 7026 70272) iASL Compiler/Disassembler and Tools: 7028 7029iASL: Completed the '-e' option to include additional ACPI tables in 7030order 7031to 7032aid with disassembly and External statement generation. ACPICA BZ 742. 7033Lin 7034Ming. 7035 7036iASL: Removed the "named object in while loop" error. The compiler cannot 7037determine how many times a loop will execute. ACPICA BZ 730. 7038 7039Disassembler: Implemented support for FADT revision 2 (MS extension). 7040ACPICA 7041BZ 743. 7042 7043Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 7044MCFG). 7045 7046---------------------------------------- 704731 October 2008. Summary of changes for version 20081031: 7048 70491) ACPI CA Core Subsystem: 7050 7051Restructured the ACPICA header files into public/private. acpi.h now 7052includes 7053only the "public" acpica headers. All other acpica headers are "private" 7054and 7055should not be included by acpica users. One new file, accommon.h is used 7056to 7057include the commonly used private headers for acpica code generation. 7058Future 7059plans include moving all private headers to a new subdirectory. 7060 7061Implemented an automatic Buffer->String return value conversion for 7062predefined ACPI methods. For these methods (such as _BIF), added 7063automatic 7064conversion for return objects that are required to be a String, but a 7065Buffer 7066was found instead. This can happen when reading string battery data from 7067an 7068operation region, because it used to be difficult to convert the data 7069from 7070buffer to string from within the ASL. Ensures that the host OS is 7071provided 7072with a valid null-terminated string. Linux BZ 11822. 7073 7074Updated the FACS waking vector interfaces. Split 7075AcpiSetFirmwareWakingVector 7076into two: one for the 32-bit vector, another for the 64-bit vector. This 7077is 7078required because the host OS must setup the wake much differently for 7079each 7080vector (real vs. protected mode, etc.) and the interface itself should 7081not 7082be 7083deciding which vector to use. Also, eliminated the 7084GetFirmwareWakingVector 7085interface, as it served no purpose (only the firmware reads the vector, 7086OS 7087only writes the vector.) ACPICA BZ 731. 7088 7089Implemented a mechanism to escape infinite AML While() loops. Added a 7090loop 7091counter to force exit from AML While loops if the count becomes too 7092large. 7093This can occur in poorly written AML when the hardware does not respond 7094within a while loop and the loop does not implement a timeout. The 7095maximum 7096loop count is configurable. A new exception code is returned when a loop 7097is 7098broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 7099 7100Optimized the execution of AML While loops. Previously, a control state 7101object was allocated and freed for each execution of the loop. The 7102optimization is to simply reuse the control state for each iteration. 7103This 7104speeds up the raw loop execution time by about 5%. 7105 7106Enhanced the implicit return mechanism. For Windows compatibility, return 7107an 7108implicit integer of value zero for methods that contain no executable 7109code. 7110Such methods are seen in the field as stubs (presumably), and can cause 7111drivers to fail if they expect a return value. Lin Ming. 7112 7113Allow multiple backslashes as root prefixes in namepaths. In a fully 7114qualified namepath, allow multiple backslash prefixes. This can happen 7115(and 7116is seen in the field) because of the use of a double-backslash in strings 7117(since backslash is the escape character) causing confusion. ACPICA BZ 7118739 7119Lin Ming. 7120 7121Emit a warning if two different FACS or DSDT tables are discovered in the 7122FADT. Checks if there are two valid but different addresses for the FACS 7123and 7124DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 7125 7126Consolidated the method argument count validation code. Merged the code 7127that 7128validates control method argument counts into the predefined validation 7129module. Eliminates possible multiple warnings for incorrect argument 7130counts. 7131 7132Implemented ACPICA example code. Includes code for ACPICA initialization, 7133handler installation, and calling a control method. Available at 7134source/tools/examples. 7135 7136Added a global pointer for FACS table to simplify internal FACS access. 7137Use 7138the global pointer instead of using AcpiGetTableByIndex for each FACS 7139access. 7140This simplifies the code for the Global Lock and the Firmware Waking 7141Vector(s). 7142 7143Example Code and Data Size: These are the sizes for the OS-independent 7144acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7145debug version of the code includes the debug output trace mechanism and 7146has a 7147much larger code and data size. 7148 7149 Previous Release: 7150 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7151 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7152 Current Release: 7153 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 7154 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 7155 71562) iASL Compiler/Disassembler and Tools: 7157 7158iASL: Improved disassembly of external method calls. Added the -e option 7159to 7160allow the inclusion of additional ACPI tables to help with the 7161disassembly 7162of 7163method invocations and the generation of external declarations during the 7164disassembly. Certain external method invocations cannot be disassembled 7165properly without the actual declaration of the method. Use the -e option 7166to 7167include the table where the external method(s) are actually declared. 7168Most 7169useful for disassembling SSDTs that make method calls back to the master 7170DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 7171-d 7172-e dsdt.aml ssdt1.aml 7173 7174iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 7175problem where the use of an alias within a namepath would result in a not 7176found error or cause the compiler to fault. Also now allows forward 7177references from the Alias operator itself. ACPICA BZ 738. 7178 7179---------------------------------------- 718026 September 2008. Summary of changes for version 20080926: 7181 71821) ACPI CA Core Subsystem: 7183 7184Designed and implemented a mechanism to validate predefined ACPI methods 7185and 7186objects. This code validates the predefined ACPI objects (objects whose 7187names 7188start with underscore) that appear in the namespace, at the time they are 7189evaluated. The argument count and the type of the returned object are 7190validated against the ACPI specification. The purpose of this validation 7191is 7192to detect problems with the BIOS-implemented predefined ACPI objects 7193before 7194the results are returned to the ACPI-related drivers. Future enhancements 7195may 7196include actual repair of incorrect return objects where possible. Two new 7197files are nspredef.c and acpredef.h. 7198 7199Fixed a fault in the AML parser if a memory allocation fails during the 7200Op 7201completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 7202 7203Fixed an issue with implicit return compatibility. This change improves 7204the 7205implicit return mechanism to be more compatible with the MS interpreter. 7206Lin 7207Ming, ACPICA BZ 349. 7208 7209Implemented support for zero-length buffer-to-string conversions. Allow 7210zero 7211length strings during interpreter buffer-to-string conversions. For 7212example, 7213during the ToDecimalString and ToHexString operators, as well as implicit 7214conversions. Fiodor Suietov, ACPICA BZ 585. 7215 7216Fixed two possible memory leaks in the error exit paths of 7217AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 7218are 7219similar in that they use a stack of state objects in order to eliminate 7220recursion. The stack must be fully unwound and deallocated if an error 7221occurs. Lin Ming. ACPICA BZ 383. 7222 7223Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 7224global 7225ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 7226Moore ACPICA BZ 442. 7227 7228Removed the obsolete version number in module headers. Removed the 7229"$Revision" number that appeared in each module header. This version 7230number 7231was useful under SourceSafe and CVS, but has no meaning under git. It is 7232not 7233only incorrect, it could also be misleading. 7234 7235Example Code and Data Size: These are the sizes for the OS-independent 7236acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7237debug version of the code includes the debug output trace mechanism and 7238has a 7239much larger code and data size. 7240 7241 Previous Release: 7242 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7243 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7244 Current Release: 7245 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 7246 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 7247 7248---------------------------------------- 724929 August 2008. Summary of changes for version 20080829: 7250 72511) ACPI CA Core Subsystem: 7252 7253Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 7254Reference. Changes include the elimination of cheating on the Object 7255field 7256for the DdbHandle subtype, addition of a reference class field to 7257differentiate the various reference types (instead of an AML opcode), and 7258the 7259cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 7260 7261Reduce an error to a warning for an incorrect method argument count. 7262Previously aborted with an error if too few arguments were passed to a 7263control method via the external ACPICA interface. Now issue a warning 7264instead 7265and continue. Handles the case where the method inadvertently declares 7266too 7267many arguments, but does not actually use the extra ones. Applies mainly 7268to 7269the predefined methods. Lin Ming. Linux BZ 11032. 7270 7271Disallow the evaluation of named object types with no intrinsic value. 7272Return 7273AE_TYPE for objects that have no value and therefore evaluation is 7274undefined: 7275Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 7276of 7277these types were allowed, but an exception would be generated at some 7278point 7279during the evaluation. Now, the error is generated up front. 7280 7281Fixed a possible memory leak in the AcpiNsGetExternalPathname function 7282(nsnames.c). Fixes a leak in the error exit path. 7283 7284Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 7285debug 7286levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 7287ACPI_EXCEPTION 7288interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 7289ACPI_LV_EVENTS. 7290 7291Removed obsolete and/or unused exception codes from the acexcep.h header. 7292There is the possibility that certain device drivers may be affected if 7293they 7294use any of these exceptions. 7295 7296The ACPICA documentation has been added to the public git source tree, 7297under 7298acpica/documents. Included are the ACPICA programmer reference, the iASL 7299compiler reference, and the changes.txt release logfile. 7300 7301Example Code and Data Size: These are the sizes for the OS-independent 7302acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7303debug version of the code includes the debug output trace mechanism and 7304has a 7305much larger code and data size. 7306 7307 Previous Release: 7308 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7309 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7310 Current Release: 7311 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7312 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 7313 73142) iASL Compiler/Disassembler and Tools: 7315 7316Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 7317defines _SCP with 3 arguments. Previous versions defined it with only 1 7318argument. iASL now allows both definitions. 7319 7320iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 7321zero- 7322length subtables when disassembling ACPI tables. Also fixed a couple of 7323errors where a full 16-bit table type field was not extracted from the 7324input 7325properly. 7326 7327acpisrc: Improve comment counting mechanism for generating source code 7328statistics. Count first and last lines of multi-line comments as 7329whitespace, 7330not comment lines. Handle Linux legal header in addition to standard 7331acpica 7332header. 7333 7334---------------------------------------- 7335 733629 July 2008. Summary of changes for version 20080729: 7337 73381) ACPI CA Core Subsystem: 7339 7340Fix a possible deadlock in the GPE dispatch. Remove call to 7341AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 7342attempt 7343to acquire the GPE lock but can deadlock since the GPE lock is already 7344held 7345at dispatch time. This code was introduced in version 20060831 as a 7346response 7347to Linux BZ 6881 and has since been removed from Linux. 7348 7349Add a function to dereference returned reference objects. Examines the 7350return 7351object from a call to AcpiEvaluateObject. Any Index or RefOf references 7352are 7353automatically dereferenced in an attempt to return something useful 7354(these 7355reference types cannot be converted into an external ACPI_OBJECT.) 7356Provides 7357MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 7358 7359x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 7360subtables for the MADT and one new subtable for the SRAT. Includes 7361disassembler and AcpiSrc support. Data from the Intel 64 Architecture 7362x2APIC 7363Specification, June 2008. 7364 7365Additional error checking for pathname utilities. Add error check after 7366all 7367calls to AcpiNsGetPathnameLength. Add status return from 7368AcpiNsBuildExternalPath and check after all calls. Add parameter 7369validation 7370to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 7371 7372Return status from the global init function AcpiUtGlobalInitialize. This 7373is 7374used by both the kernel subsystem and the utilities such as iASL 7375compiler. 7376The function could possibly fail when the caches are initialized. Yang 7377Yi. 7378 7379Add a function to decode reference object types to strings. Created for 7380improved error messages. 7381 7382Improve object conversion error messages. Better error messages during 7383object 7384conversion from internal to the external ACPI_OBJECT. Used for external 7385calls 7386to AcpiEvaluateObject. 7387 7388Example Code and Data Size: These are the sizes for the OS-independent 7389acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7390debug version of the code includes the debug output trace mechanism and 7391has a 7392much larger code and data size. 7393 7394 Previous Release: 7395 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7396 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7397 Current Release: 7398 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 7399 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 7400 74012) iASL Compiler/Disassembler and Tools: 7402 7403Debugger: fix a possible hang when evaluating non-methods. Fixes a 7404problem 7405introduced in version 20080701. If the object being evaluated (via 7406execute 7407command) is not a method, the debugger can hang while trying to obtain 7408non- 7409existent parameters. 7410 7411iASL: relax error for using reserved "_T_x" identifiers. These names can 7412appear in a disassembled ASL file if they were emitted by the original 7413compiler. Instead of issuing an error or warning and forcing the user to 7414manually change these names, issue a remark instead. 7415 7416iASL: error if named object created in while loop. Emit an error if any 7417named 7418object is created within a While loop. If allowed, this code will 7419generate 7420a 7421run-time error on the second iteration of the loop when an attempt is 7422made 7423to 7424create the same named object twice. ACPICA bugzilla 730. 7425 7426iASL: Support absolute pathnames for include files. Add support for 7427absolute 7428pathnames within the Include operator. previously, only relative 7429pathnames 7430were supported. 7431 7432iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 7433Descriptor. 7434The ACPI spec requires one interrupt minimum. BZ 423 7435 7436iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 7437Handles the case for the Interrupt Resource Descriptor where 7438the ResourceSource argument is omitted but ResourceSourceIndex 7439is present. Now leave room for the Index. BZ 426 7440 7441iASL: Prevent error message if CondRefOf target does not exist. Fixes 7442cases 7443where an error message is emitted if the target does not exist. BZ 516 7444 7445iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 7446(get ACPI tables on Windows). This was apparently broken in version 744720070919. 7448 7449AcpiXtract: Handle EOF while extracting data. Correctly handle the case 7450where 7451the EOF happens immediately after the last table in the input file. Print 7452completion message. Previously, no message was displayed in this case. 7453 7454---------------------------------------- 745501 July 2008. Summary of changes for version 20080701: 7456 74570) Git source tree / acpica.org 7458 7459Fixed a problem where a git-clone from http would not transfer the entire 7460source tree. 7461 74621) ACPI CA Core Subsystem: 7463 7464Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 7465enable bit. Now performs a read-change-write of the enable register 7466instead 7467of simply writing out the cached enable mask. This will prevent 7468inadvertent 7469enabling of GPEs if a rogue GPE is received during initialization (before 7470GPE 7471handlers are installed.) 7472 7473Implemented a copy for dynamically loaded tables. Previously, dynamically 7474loaded tables were simply mapped - but on some machines this memory is 7475corrupted after suspend. Now copy the table to a local buffer. For the 7476OpRegion case, added checksum verify. Use the table length from the table 7477header, not the region length. For the Buffer case, use the table length 7478also. Dennis Noordsij, Bob Moore. BZ 10734 7479 7480Fixed a problem where the same ACPI table could not be dynamically loaded 7481and 7482unloaded more than once. Without this change, a table cannot be loaded 7483again 7484once it has been loaded/unloaded one time. The current mechanism does not 7485unregister a table upon an unload. During a load, if the same table is 7486found, 7487this no longer returns an exception. BZ 722 7488 7489Fixed a problem where the wrong descriptor length was calculated for the 7490EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 7491EndTag 7492are calculated as 12 bytes long, but the actual length in the internal 7493descriptor is 16 because of the round-up to 8 on the 64-bit build. 7494Reported 7495by Linn Crosetto. BZ 728 7496 7497Fixed a possible memory leak in the Unload operator. The DdbHandle 7498returned 7499by Load() did not have its reference count decremented during unload, 7500leading 7501to a memory leak. Lin Ming. BZ 727 7502 7503Fixed a possible memory leak when deleting thermal/processor objects. Any 7504associated notify handlers (and objects) were not being deleted. Fiodor 7505Suietov. BZ 506 7506 7507Fixed the ordering of the ASCII names in the global mutex table to match 7508the 7509actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 7510only. 7511Vegard Nossum. BZ 726 7512 7513Enhanced the AcpiGetObjectInfo interface to return the number of required 7514arguments if the object is a control method. Added this call to the 7515debugger 7516so the proper number of default arguments are passed to a method. This 7517prevents a warning when executing methods from AcpiExec. 7518 7519Added a check for an invalid handle in AcpiGetObjectInfo. Return 7520AE_BAD_PARAMETER if input handle is invalid. BZ 474 7521 7522Fixed an extraneous warning from exconfig.c on the 64-bit build. 7523 7524Example Code and Data Size: These are the sizes for the OS-independent 7525acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7526debug version of the code includes the debug output trace mechanism and 7527has a 7528much larger code and data size. 7529 7530 Previous Release: 7531 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7532 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7533 Current Release: 7534 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 7535 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 7536 75372) iASL Compiler/Disassembler and Tools: 7538 7539iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 7540resource descriptor names. 7541 7542iASL: Detect invalid ASCII characters in input (windows version). Removed 7543the 7544"-CF" flag from the flex compile, enables correct detection of non-ASCII 7545characters in the input. BZ 441 7546 7547iASL: Eliminate warning when result of LoadTable is not used. Eliminate 7548the 7549"result of operation not used" warning when the DDB handle returned from 7550LoadTable is not used. The warning is not needed. BZ 590 7551 7552AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 7553method 7554to 7555pass address of table to the AML. Added option to disable OpRegion 7556simulation 7557to allow creation of an OpRegion with a real address that was passed to 7558_CFG. 7559All of this allows testing of the Load and Unload operators from 7560AcpiExec. 7561 7562Debugger: update tables command for unloaded tables. Handle unloaded 7563tables 7564and use the standard table header output routine. 7565 7566---------------------------------------- 756709 June 2008. Summary of changes for version 20080609: 7568 75691) ACPI CA Core Subsystem: 7570 7571Implemented a workaround for reversed _PRT entries. A significant number 7572of 7573BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 7574change dynamically detects and repairs this problem. Provides 7575compatibility 7576with MS ACPI. BZ 6859 7577 7578Simplified the internal ACPI hardware interfaces to eliminate the locking 7579flag parameter from Register Read/Write. Added a new external interface, 7580AcpiGetRegisterUnlocked. 7581 7582Fixed a problem where the invocation of a GPE control method could hang. 7583This 7584was a regression introduced in 20080514. The new method argument count 7585validation mechanism can enter an infinite loop when a GPE method is 7586dispatched. Problem fixed by removing the obsolete code that passed GPE 7587block 7588information to the notify handler via the control method parameter 7589pointer. 7590 7591Fixed a problem where the _SST execution status was incorrectly returned 7592to 7593the caller of AcpiEnterSleepStatePrep. This was a regression introduced 7594in 759520080514. _SST is optional and a NOT_FOUND exception should never be 7596returned. BZ 716 7597 7598Fixed a problem where a deleted object could be accessed from within the 7599AML 7600parser. This was a regression introduced in version 20080123 as a fix for 7601the 7602Unload operator. Lin Ming. BZ 10669 7603 7604Cleaned up the debug operand dump mechanism. Eliminated unnecessary 7605operands 7606and eliminated the use of a negative index in a loop. Operands are now 7607displayed in the correct order, not backwards. This also fixes a 7608regression 7609introduced in 20080514 on 64-bit systems where the elimination of 7610ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 7611715 7612 7613Fixed a possible memory leak in EvPciConfigRegionSetup where the error 7614exit 7615path did not delete a locally allocated structure. 7616 7617Updated definitions for the DMAR and SRAT tables to synchronize with the 7618current specifications. Includes disassembler support. 7619 7620Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 7621loop termination value was used. Loop terminated on iteration early, 7622missing 7623one mutex. Linn Crosetto 7624 7625Example Code and Data Size: These are the sizes for the OS-independent 7626acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7627debug version of the code includes the debug output trace mechanism and 7628has a 7629much larger code and data size. 7630 7631 Previous Release: 7632 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7633 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7634 Current Release: 7635 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 7636 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 7637 76382) iASL Compiler/Disassembler and Tools: 7639 7640Disassembler: Implemented support for EisaId() within _CID objects. Now 7641disassemble integer _CID objects back to EisaId invocations, including 7642multiple integers within _CID packages. Includes single-step support for 7643debugger also. 7644 7645Disassembler: Added support for DMAR and SRAT table definition changes. 7646 7647---------------------------------------- 764814 May 2008. Summary of changes for version 20080514: 7649 76501) ACPI CA Core Subsystem: 7651 7652Fixed a problem where GPEs were enabled too early during the ACPICA 7653initialization. This could lead to "handler not installed" errors on some 7654machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 7655This 7656ensures that all operation regions and devices throughout the namespace 7657have 7658been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 7659 7660Implemented a change to the enter sleep code. Moved execution of the _GTS 7661method to just before setting sleep enable bit. The execution was moved 7662from 7663AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 7664immediately before the SLP_EN bit is set, as per the ACPI specification. 7665Luming Yu, BZ 1653. 7666 7667Implemented a fix to disable unknown GPEs (2nd version). Now always 7668disable 7669the GPE, even if ACPICA thinks that that it is already disabled. It is 7670possible that the AML or some other code has enabled the GPE unbeknownst 7671to 7672the ACPICA code. 7673 7674Fixed a problem with the Field operator where zero-length fields would 7675return 7676an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 7677ASL 7678field declarations in Field(), BankField(), and IndexField(). BZ 10606. 7679 7680Implemented a fix for the Load operator, now load the table at the 7681namespace 7682root. This reverts a change introduced in version 20071019. The table is 7683now 7684loaded at the namespace root even though this goes against the ACPI 7685specification. This provides compatibility with other ACPI 7686implementations. 7687The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 7688Ming. 7689 7690Fixed a problem where ACPICA would not Load() tables with unusual 7691signatures. 7692Now ignore ACPI table signature for Load() operator. Only "SSDT" is 7693acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 7694Therefore, signature validation is worthless. Apparently MS ACPI accepts 7695such 7696signatures, ACPICA must be compatible. BZ 10454. 7697 7698Fixed a possible negative array index in AcpiUtValidateException. Added 7699NULL 7700fields to the exception string arrays to eliminate a -1 subtraction on 7701the 7702SubStatus field. 7703 7704Updated the debug tracking macros to reduce overall code and data size. 7705Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 7706instead of pointers to static strings. Jan Beulich and Bob Moore. 7707 7708Implemented argument count checking in control method invocation via 7709AcpiEvaluateObject. Now emit an error if too few arguments, warning if 7710too 7711many. This applies only to extern programmatic control method execution, 7712not 7713method-to-method calls within the AML. Lin Ming. 7714 7715Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 7716no 7717longer needed, especially with the removal of 16-bit support. It was 7718replaced 7719mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 7720bit 7721on 772232/64-bit platforms is required. 7723 7724Added the C const qualifier for appropriate string constants -- mostly 7725MODULE_NAME and printf format strings. Jan Beulich. 7726 7727Example Code and Data Size: These are the sizes for the OS-independent 7728acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7729debug version of the code includes the debug output trace mechanism and 7730has a 7731much larger code and data size. 7732 7733 Previous Release: 7734 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7735 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7736 Current Release: 7737 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 7738 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 7739 77402) iASL Compiler/Disassembler and Tools: 7741 7742Implemented ACPI table revision ID validation in the disassembler. Zero 7743is 7744always invalid. For DSDTs, the ID controls the interpreter integer width. 77451 7746means 32-bit and this is unusual. 2 or greater is 64-bit. 7747 7748---------------------------------------- 774921 March 2008. Summary of changes for version 20080321: 7750 77511) ACPI CA Core Subsystem: 7752 7753Implemented an additional change to the GPE support in order to suppress 7754spurious or stray GPEs. The AcpiEvDisableGpe function will now 7755permanently 7756disable incoming GPEs that are neither enabled nor disabled -- meaning 7757that 7758the GPE is unknown to the system. This should prevent future interrupt 7759floods 7760from that GPE. BZ 6217 (Zhang Rui) 7761 7762Fixed a problem where NULL package elements were not returned to the 7763AcpiEvaluateObject interface correctly. The element was simply ignored 7764instead of returning a NULL ACPI_OBJECT package element, potentially 7765causing 7766a buffer overflow and/or confusing the caller who expected a fixed number 7767of 7768elements. BZ 10132 (Lin Ming, Bob Moore) 7769 7770Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 7771Dword, 7772Qword), Field, BankField, and IndexField operators when invoked from 7773inside 7774an executing control method. In this case, these operators created 7775namespace 7776nodes that were incorrectly left marked as permanent nodes instead of 7777temporary nodes. This could cause a problem if there is race condition 7778between an exiting control method and a running namespace walk. (Reported 7779by 7780Linn Crosetto) 7781 7782Fixed a problem where the CreateField and CreateXXXField operators would 7783incorrectly allow duplicate names (the name of the field) with no 7784exception 7785generated. 7786 7787Implemented several changes for Notify handling. Added support for new 7788Notify 7789values (ACPI 2.0+) and improved the Notify debug output. Notify on 7790PowerResource objects is no longer allowed, as per the ACPI 7791specification. 7792(Bob Moore, Zhang Rui) 7793 7794All Reference Objects returned via the AcpiEvaluateObject interface are 7795now 7796marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 7797for 7798NULL objects - either NULL package elements or unresolved named 7799references. 7800 7801Fixed a problem where an extraneous debug message was produced for 7802package 7803objects (when debugging enabled). The message "Package List length larger 7804than NumElements count" is now produced in the correct case, and is now 7805an 7806error message rather than a debug message. Added a debug message for the 7807opposite case, where NumElements is larger than the Package List (the 7808package 7809will be padded out with NULL elements as per the ACPI spec.) 7810 7811Implemented several improvements for the output of the ASL "Debug" object 7812to 7813clarify and keep all data for a given object on one output line. 7814 7815Fixed two size calculation issues with the variable-length Start 7816Dependent 7817resource descriptor. 7818 7819Example Code and Data Size: These are the sizes for the OS-independent 7820acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7821debug version of the code includes the debug output trace mechanism and 7822has 7823a much larger code and data size. 7824 7825 Previous Release: 7826 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7827 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7828 Current Release: 7829 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7830 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7831 78322) iASL Compiler/Disassembler and Tools: 7833 7834Fixed a problem with the use of the Switch operator where execution of 7835the 7836containing method by multiple concurrent threads could cause an 7837AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 7838actual Switch opcode, it must be simulated with local named temporary 7839variables and if/else pairs. The solution chosen was to mark any method 7840that 7841uses Switch as Serialized, thus preventing multiple thread entries. BZ 7842469. 7843 7844---------------------------------------- 784513 February 2008. Summary of changes for version 20080213: 7846 78471) ACPI CA Core Subsystem: 7848 7849Implemented another MS compatibility design change for GPE/Notify 7850handling. 7851GPEs are now cleared/enabled asynchronously to allow all pending notifies 7852to 7853complete first. It is expected that the OSL will queue the enable request 7854behind all pending notify requests (may require changes to the local host 7855OSL 7856in AcpiOsExecute). Alexey Starikovskiy. 7857 7858Fixed a problem where buffer and package objects passed as arguments to a 7859control method via the external AcpiEvaluateObject interface could cause 7860an 7861AE_AML_INTERNAL exception depending on the order and type of operators 7862executed by the target control method. 7863 7864Fixed a problem where resource descriptor size optimization could cause a 7865problem when a _CRS resource template is passed to a _SRS method. The 7866_SRS 7867resource template must use the same descriptors (with the same size) as 7868returned from _CRS. This change affects the following resource 7869descriptors: 7870IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 78719487) 7872 7873Fixed a problem where a CopyObject to RegionField, BankField, and 7874IndexField 7875objects did not perform an implicit conversion as it should. These types 7876must 7877retain their initial type permanently as per the ACPI specification. 7878However, 7879a CopyObject to all other object types should not perform an implicit 7880conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 7881 7882Fixed a problem with the AcpiGetDevices interface where the mechanism to 7883match device CIDs did not examine the entire list of available CIDs, but 7884instead aborted on the first non-matching CID. Andrew Patterson. 7885 7886Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 7887was 7888inadvertently changed to return a 16-bit value instead of a 32-bit value, 7889truncating the upper dword of a 64-bit value. This macro is only used to 7890display debug output, so no incorrect calculations were made. Also, 7891reimplemented the macro so that a 64-bit shift is not performed by 7892inefficient compilers. 7893 7894Added missing va_end statements that should correspond with each va_start 7895statement. 7896 7897Example Code and Data Size: These are the sizes for the OS-independent 7898acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7899debug version of the code includes the debug output trace mechanism and 7900has 7901a much larger code and data size. 7902 7903 Previous Release: 7904 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7905 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7906 Current Release: 7907 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7908 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7909 79102) iASL Compiler/Disassembler and Tools: 7911 7912Implemented full disassembler support for the following new ACPI tables: 7913BERT, EINJ, and ERST. Implemented partial disassembler support for the 7914complicated HEST table. These tables support the Windows Hardware Error 7915Architecture (WHEA). 7916 7917---------------------------------------- 791823 January 2008. Summary of changes for version 20080123: 7919 79201) ACPI CA Core Subsystem: 7921 7922Added the 2008 copyright to all module headers and signons. This affects 7923virtually every file in the ACPICA core subsystem, the iASL compiler, and 7924the tools/utilities. 7925 7926Fixed a problem with the SizeOf operator when used with Package and 7927Buffer 7928objects. These objects have deferred execution for some arguments, and 7929the 7930execution is now completed before the SizeOf is executed. This problem 7931caused 7932unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 7933BZ 79349558 7935 7936Implemented an enhancement to the interpreter "slack mode". In the 7937absence 7938of 7939an explicit return or an implicitly returned object from the last 7940executed 7941opcode, a control method will now implicitly return an integer of value 0 7942for 7943Microsoft compatibility. (Lin Ming) BZ 392 7944 7945Fixed a problem with the Load operator where an exception was not 7946returned 7947in 7948the case where the table is already loaded. (Lin Ming) BZ 463 7949 7950Implemented support for the use of DDBHandles as an Indexed Reference, as 7951per 7952the ACPI spec. (Lin Ming) BZ 486 7953 7954Implemented support for UserTerm (Method invocation) for the Unload 7955operator 7956as per the ACPI spec. (Lin Ming) BZ 580 7957 7958Fixed a problem with the LoadTable operator where the OemId and 7959OemTableId 7960input strings could cause unexpected failures if they were shorter than 7961the 7962maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 7963 7964Implemented support for UserTerm (Method invocation) for the Unload 7965operator 7966as per the ACPI spec. (Lin Ming) BZ 580 7967 7968Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 7969HEST, 7970IBFT, UEFI, WDAT. Disassembler support is forthcoming. 7971 7972Example Code and Data Size: These are the sizes for the OS-independent 7973acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7974debug version of the code includes the debug output trace mechanism and 7975has 7976a much larger code and data size. 7977 7978 Previous Release: 7979 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7980 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7981 Current Release: 7982 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7983 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7984 79852) iASL Compiler/Disassembler and Tools: 7986 7987Implemented support in the disassembler for checksum validation on 7988incoming 7989binary DSDTs and SSDTs. If incorrect, a message is displayed within the 7990table 7991header dump at the start of the disassembly. 7992 7993Implemented additional debugging information in the namespace listing 7994file 7995created during compilation. In addition to the namespace hierarchy, the 7996full 7997pathname to each namespace object is displayed. 7998 7999Fixed a problem with the disassembler where invalid ACPI tables could 8000cause 8001faults or infinite loops. 8002 8003Fixed an unexpected parse error when using the optional "parameter types" 8004list in a control method declaration. (Lin Ming) BZ 397 8005 8006Fixed a problem where two External declarations with the same name did 8007not 8008cause an error (Lin Ming) BZ 509 8009 8010Implemented support for full TermArgs (adding Argx, Localx and method 8011invocation) for the ParameterData parameter to the LoadTable operator. 8012(Lin 8013Ming) BZ 583,587 8014 8015---------------------------------------- 801619 December 2007. Summary of changes for version 20071219: 8017 80181) ACPI CA Core Subsystem: 8019 8020Implemented full support for deferred execution for the TermArg string 8021arguments for DataTableRegion. This enables forward references and full 8022operand resolution for the three string arguments. Similar to 8023OperationRegion 8024deferred argument execution.) Lin Ming. BZ 430 8025 8026Implemented full argument resolution support for the BankValue argument 8027to 8028BankField. Previously, only constants were supported, now any TermArg may 8029be 8030used. Lin Ming BZ 387, 393 8031 8032Fixed a problem with AcpiGetDevices where the search of a branch of the 8033device tree could be terminated prematurely. In accordance with the ACPI 8034specification, the search down the current branch is terminated if a 8035device 8036is both not present and not functional (instead of just not present.) 8037Yakui 8038Zhao. 8039 8040Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 8041if 8042the underlying AML code changed the GPE enable registers. Now, any 8043unknown 8044incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 8045disabled 8046instead of simply ignored. Rui Zhang. 8047 8048Fixed a problem with Index Fields where the Index register was 8049incorrectly 8050limited to a maximum of 32 bits. Now any size may be used. 8051 8052Fixed a couple memory leaks associated with "implicit return" objects 8053when 8054the AML Interpreter slack mode is enabled. Lin Ming BZ 349 8055 8056Example Code and Data Size: These are the sizes for the OS-independent 8057acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8058debug version of the code includes the debug output trace mechanism and 8059has 8060a much larger code and data size. 8061 8062 Previous Release: 8063 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8064 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8065 Current Release: 8066 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 8067 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 8068 8069---------------------------------------- 807014 November 2007. Summary of changes for version 20071114: 8071 80721) ACPI CA Core Subsystem: 8073 8074Implemented event counters for each of the Fixed Events, the ACPI SCI 8075(interrupt) itself, and control methods executed. Named 8076AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 8077These 8078should be useful for debugging and statistics. 8079 8080Implemented a new external interface, AcpiGetStatistics, to retrieve the 8081contents of the various event counters. Returns the current values for 8082AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 8083AcpiMethodCount. The interface can be expanded in the future if new 8084counters 8085are added. Device drivers should use this interface rather than access 8086the 8087counters directly. 8088 8089Fixed a problem with the FromBCD and ToBCD operators. With some 8090compilers, 8091the ShortDivide function worked incorrectly, causing problems with the 8092BCD 8093functions with large input values. A truncation from 64-bit to 32-bit 8094inadvertently occurred. Internal BZ 435. Lin Ming 8095 8096Fixed a problem with Index references passed as method arguments. 8097References 8098passed as arguments to control methods were dereferenced immediately 8099(before 8100control was passed to the called method). The references are now 8101correctly 8102passed directly to the called method. BZ 5389. Lin Ming 8103 8104Fixed a problem with CopyObject used in conjunction with the Index 8105operator. 8106The reference was incorrectly dereferenced before the copy. The reference 8107is 8108now correctly copied. BZ 5391. Lin Ming 8109 8110Fixed a problem with Control Method references within Package objects. 8111These 8112references are now correctly generated. This completes the package 8113construction overhaul that began in version 20071019. 8114 8115Example Code and Data Size: These are the sizes for the OS-independent 8116acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8117debug version of the code includes the debug output trace mechanism and 8118has 8119a much larger code and data size. 8120 8121 Previous Release: 8122 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8123 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8124 Current Release: 8125 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 8126 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 8127 8128 81292) iASL Compiler/Disassembler and Tools: 8130 8131The AcpiExec utility now installs handlers for all of the predefined 8132Operation Region types. New types supported are: PCI_Config, CMOS, and 8133PCIBARTarget. 8134 8135Fixed a problem with the 64-bit version of AcpiExec where the extended 8136(64- 8137bit) address fields for the DSDT and FACS within the FADT were not being 8138used, causing truncation of the upper 32-bits of these addresses. Lin 8139Ming 8140and Bob Moore 8141 8142---------------------------------------- 814319 October 2007. Summary of changes for version 20071019: 8144 81451) ACPI CA Core Subsystem: 8146 8147Fixed a problem with the Alias operator when the target of the alias is a 8148named ASL operator that opens a new scope -- Scope, Device, 8149PowerResource, 8150Processor, and ThermalZone. In these cases, any children of the original 8151operator could not be accessed via the alias, potentially causing 8152unexpected 8153AE_NOT_FOUND exceptions. (BZ 9067) 8154 8155Fixed a problem with the Package operator where all named references were 8156created as object references and left otherwise unresolved. According to 8157the 8158ACPI specification, a Package can only contain Data Objects or references 8159to 8160control methods. The implication is that named references to Data Objects 8161(Integer, Buffer, String, Package, BufferField, Field) should be resolved 8162immediately upon package creation. This is the approach taken with this 8163change. References to all other named objects (Methods, Devices, Scopes, 8164etc.) are all now properly created as reference objects. (BZ 5328) 8165 8166Reverted a change to Notify handling that was introduced in version 816720070508. This version changed the Notify handling from asynchronous to 8168fully synchronous (Device driver Notify handling with respect to the 8169Notify 8170ASL operator). It was found that this change caused more problems than it 8171solved and was removed by most users. 8172 8173Fixed a problem with the Increment and Decrement operators where the type 8174of 8175the target object could be unexpectedly and incorrectly changed. (BZ 353) 8176Lin Ming. 8177 8178Fixed a problem with the Load and LoadTable operators where the table 8179location within the namespace was ignored. Instead, the table was always 8180loaded into the root or current scope. Lin Ming. 8181 8182Fixed a problem with the Load operator when loading a table from a buffer 8183object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 8184 8185Fixed a problem with the Debug object where a store of a DdbHandle 8186reference 8187object to the Debug object could cause a fault. 8188 8189Added a table checksum verification for the Load operator, in the case 8190where 8191the load is from a buffer. (BZ 578). 8192 8193Implemented additional parameter validation for the LoadTable operator. 8194The 8195length of the input strings SignatureString, OemIdString, and OemTableId 8196are 8197now checked for maximum lengths. (BZ 582) Lin Ming. 8198 8199Example Code and Data Size: These are the sizes for the OS-independent 8200acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8201debug version of the code includes the debug output trace mechanism and 8202has 8203a much larger code and data size. 8204 8205 Previous Release: 8206 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8207 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8208 Current Release: 8209 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 8210 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 8211 8212 82132) iASL Compiler/Disassembler: 8214 8215Fixed a problem where if a single file was specified and the file did not 8216exist, no error message was emitted. (Introduced with wildcard support in 8217version 20070917.) 8218 8219---------------------------------------- 822019 September 2007. Summary of changes for version 20070919: 8221 82221) ACPI CA Core Subsystem: 8223 8224Designed and implemented new external interfaces to install and remove 8225handlers for ACPI table-related events. Current events that are defined 8226are 8227LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 8228they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 8229AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 8230 8231Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 8232(acpi_serialized option on Linux) could cause some systems to hang during 8233initialization. (Bob Moore) BZ 8171 8234 8235Fixed a problem where objects of certain types (Device, ThermalZone, 8236Processor, PowerResource) can be not found if they are declared and 8237referenced from within the same control method (Lin Ming) BZ 341 8238 8239Example Code and Data Size: These are the sizes for the OS-independent 8240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8241debug version of the code includes the debug output trace mechanism and 8242has 8243a much larger code and data size. 8244 8245 Previous Release: 8246 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8247 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8248 Current Release: 8249 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 8250 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 8251 8252 82532) iASL Compiler/Disassembler: 8254 8255Implemented support to allow multiple files to be compiled/disassembled 8256in 8257a 8258single invocation. This includes command line wildcard support for both 8259the 8260Windows and Unix versions of the compiler. This feature simplifies the 8261disassembly and compilation of multiple ACPI tables in a single 8262directory. 8263 8264---------------------------------------- 826508 May 2007. Summary of changes for version 20070508: 8266 82671) ACPI CA Core Subsystem: 8268 8269Implemented a Microsoft compatibility design change for the handling of 8270the 8271Notify AML operator. Previously, notify handlers were dispatched and 8272executed completely asynchronously in a deferred thread. The new design 8273still executes the notify handlers in a different thread, but the 8274original 8275thread that executed the Notify() now waits at a synchronization point 8276for 8277the notify handler to complete. Some machines depend on a synchronous 8278Notify 8279operator in order to operate correctly. 8280 8281Implemented support to allow Package objects to be passed as method 8282arguments to the external AcpiEvaluateObject interface. Previously, this 8283would return the AE_NOT_IMPLEMENTED exception. This feature had not been 8284implemented since there were no reserved control methods that required it 8285until recently. 8286 8287Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 8288that 8289contained invalid non-zero values in reserved fields could cause later 8290failures because these fields have meaning in later revisions of the 8291FADT. 8292For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 8293fields 8294are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 8295 8296Fixed a problem where the Global Lock handle was not properly updated if 8297a 8298thread that acquired the Global Lock via executing AML code then 8299attempted 8300to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 8301Joe 8302Liu. 8303 8304Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 8305could be corrupted if the interrupt being removed was at the head of the 8306list. Reported by Linn Crosetto. 8307 8308Example Code and Data Size: These are the sizes for the OS-independent 8309acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8310debug version of the code includes the debug output trace mechanism and 8311has 8312a much larger code and data size. 8313 8314 Previous Release: 8315 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8316 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8317 Current Release: 8318 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 8319 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 8320 8321---------------------------------------- 832220 March 2007. Summary of changes for version 20070320: 8323 83241) ACPI CA Core Subsystem: 8325 8326Implemented a change to the order of interpretation and evaluation of AML 8327operand objects within the AML interpreter. The interpreter now evaluates 8328operands in the order that they appear in the AML stream (and the 8329corresponding ASL code), instead of in the reverse order (after the 8330entire 8331operand list has been parsed). The previous behavior caused several 8332subtle 8333incompatibilities with the Microsoft AML interpreter as well as being 8334somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 8335 8336Implemented a change to the ACPI Global Lock support. All interfaces to 8337the 8338global lock now allow the same thread to acquire the lock multiple times. 8339This affects the AcpiAcquireGlobalLock external interface to the global 8340lock 8341as well as the internal use of the global lock to support AML fields -- a 8342control method that is holding the global lock can now simultaneously 8343access 8344AML fields that require global lock protection. Previously, in both 8345cases, 8346this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 8347to 8348AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 8349Controller. There is no change to the behavior of the AML Acquire 8350operator, 8351as this can already be used to acquire a mutex multiple times by the same 8352thread. BZ 8066. With assistance from Alexey Starikovskiy. 8353 8354Fixed a problem where invalid objects could be referenced in the AML 8355Interpreter after error conditions. During operand evaluation, ensure 8356that 8357the internal "Return Object" field is cleared on error and only valid 8358pointers are stored there. Caused occasional access to deleted objects 8359that 8360resulted in "large reference count" warning messages. Valery Podrezov. 8361 8362Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 8363on 8364deeply nested control method invocations. BZ 7873, local BZ 487. Valery 8365Podrezov. 8366 8367Fixed an internal problem with the handling of result objects on the 8368interpreter result stack. BZ 7872. Valery Podrezov. 8369 8370Removed obsolete code that handled the case where AML_NAME_OP is the 8371target 8372of a reference (Reference.Opcode). This code was no longer necessary. BZ 83737874. Valery Podrezov. 8374 8375Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 8376was 8377a 8378remnant from the previously discontinued 16-bit support. 8379 8380Example Code and Data Size: These are the sizes for the OS-independent 8381acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8382debug version of the code includes the debug output trace mechanism and 8383has 8384a much larger code and data size. 8385 8386 Previous Release: 8387 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8388 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8389 Current Release: 8390 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8391 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 8392 8393---------------------------------------- 839426 January 2007. Summary of changes for version 20070126: 8395 83961) ACPI CA Core Subsystem: 8397 8398Added the 2007 copyright to all module headers and signons. This affects 8399virtually every file in the ACPICA core subsystem, the iASL compiler, and 8400the utilities. 8401 8402Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 8403during a table load. A bad pointer was passed in the case where the DSDT 8404is 8405overridden, causing a fault in this case. 8406 8407Example Code and Data Size: These are the sizes for the OS-independent 8408acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8409debug version of the code includes the debug output trace mechanism and 8410has 8411a much larger code and data size. 8412 8413 Previous Release: 8414 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8415 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8416 Current Release: 8417 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8418 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8419 8420---------------------------------------- 842115 December 2006. Summary of changes for version 20061215: 8422 84231) ACPI CA Core Subsystem: 8424 8425Support for 16-bit ACPICA has been completely removed since it is no 8426longer 8427necessary and it clutters the code. All 16-bit macros, types, and 8428conditional compiles have been removed, cleaning up and simplifying the 8429code 8430across the entire subsystem. DOS support is no longer needed since the 8431bootable Linux firmware kit is now available. 8432 8433The handler for the Global Lock is now removed during AcpiTerminate to 8434enable a clean subsystem restart, via the implementation of the 8435AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 8436HP) 8437 8438Implemented enhancements to the multithreading support within the 8439debugger 8440to enable improved multithreading debugging and evaluation of the 8441subsystem. 8442(Valery Podrezov) 8443 8444Debugger: Enhanced the Statistics/Memory command to emit the total 8445(maximum) 8446memory used during the execution, as well as the maximum memory consumed 8447by 8448each of the various object types. (Valery Podrezov) 8449 8450Example Code and Data Size: These are the sizes for the OS-independent 8451acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8452debug version of the code includes the debug output trace mechanism and 8453has 8454a much larger code and data size. 8455 8456 Previous Release: 8457 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8458 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8459 Current Release: 8460 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 8461 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 8462 8463 84642) iASL Compiler/Disassembler and Tools: 8465 8466AcpiExec: Implemented a new option (-m) to display full memory use 8467statistics upon subsystem/program termination. (Valery Podrezov) 8468 8469---------------------------------------- 847009 November 2006. Summary of changes for version 20061109: 8471 84721) ACPI CA Core Subsystem: 8473 8474Optimized the Load ASL operator in the case where the source operand is 8475an 8476operation region. Simply map the operation region memory, instead of 8477performing a bytewise read. (Region must be of type SystemMemory, see 8478below.) 8479 8480Fixed the Load ASL operator for the case where the source operand is a 8481region field. A buffer object is also allowed as the source operand. BZ 8482480 8483 8484Fixed a problem where the Load ASL operator allowed the source operand to 8485be 8486an operation region of any type. It is now restricted to regions of type 8487SystemMemory, as per the ACPI specification. BZ 481 8488 8489Additional cleanup and optimizations for the new Table Manager code. 8490 8491AcpiEnable will now fail if all of the required ACPI tables are not 8492loaded 8493(FADT, FACS, DSDT). BZ 477 8494 8495Added #pragma pack(8/4) to acobject.h to ensure that the structures in 8496this 8497header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 8498manually optimized to be aligned and will not work if it is byte-packed. 8499 8500Example Code and Data Size: These are the sizes for the OS-independent 8501acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8502debug version of the code includes the debug output trace mechanism and 8503has 8504a much larger code and data size. 8505 8506 Previous Release: 8507 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8508 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8509 Current Release: 8510 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 8511 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 8512 8513 85142) iASL Compiler/Disassembler and Tools: 8515 8516Fixed a problem where the presence of the _OSI predefined control method 8517within complex expressions could cause an internal compiler error. 8518 8519AcpiExec: Implemented full region support for multiple address spaces. 8520SpaceId is now part of the REGION object. BZ 429 8521 8522---------------------------------------- 852311 October 2006. Summary of changes for version 20061011: 8524 85251) ACPI CA Core Subsystem: 8526 8527Completed an AML interpreter performance enhancement for control method 8528execution. Previously a 2-pass parse/execution, control methods are now 8529completely parsed and executed in a single pass. This improves overall 8530interpreter performance by ~25%, reduces code size, and reduces CPU stack 8531use. (Valery Podrezov + interpreter changes in version 20051202 that 8532eliminated namespace loading during the pass one parse.) 8533 8534Implemented _CID support for PCI Root Bridge detection. If the _HID does 8535not 8536match the predefined PCI Root Bridge IDs, the _CID list (if present) is 8537now 8538obtained and also checked for an ID match. 8539 8540Implemented additional support for the PCI _ADR execution: upsearch until 8541a 8542device scope is found before executing _ADR. This allows PCI_Config 8543operation regions to be declared locally within control methods 8544underneath 8545PCI device objects. 8546 8547Fixed a problem with a possible race condition between threads executing 8548AcpiWalkNamespace and the AML interpreter. This condition was removed by 8549modifying AcpiWalkNamespace to (by default) ignore all temporary 8550namespace 8551entries created during any concurrent control method execution. An 8552additional namespace race condition is known to exist between 8553AcpiWalkNamespace and the Load/Unload ASL operators and is still under 8554investigation. 8555 8556Restructured the AML ParseLoop function, breaking it into several 8557subfunctions in order to reduce CPU stack use and improve 8558maintainability. 8559(Mikhail Kouzmich) 8560 8561AcpiGetHandle: Fix for parameter validation to detect invalid 8562combinations 8563of prefix handle and pathname. BZ 478 8564 8565Example Code and Data Size: These are the sizes for the OS-independent 8566acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8567debug version of the code includes the debug output trace mechanism and 8568has 8569a much larger code and data size. 8570 8571 Previous Release: 8572 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8573 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8574 Current Release: 8575 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 8576 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 8577 85782) iASL Compiler/Disassembler and Tools: 8579 8580Ported the -g option (get local ACPI tables) to the new ACPICA Table 8581Manager 8582to restore original behavior. 8583 8584---------------------------------------- 858527 September 2006. Summary of changes for version 20060927: 8586 85871) ACPI CA Core Subsystem: 8588 8589Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 8590These functions now use a spinlock for mutual exclusion and the interrupt 8591level indication flag is not needed. 8592 8593Fixed a problem with the Global Lock where the lock could appear to be 8594obtained before it is actually obtained. The global lock semaphore was 8595inadvertently created with one unit instead of zero units. (BZ 464) 8596Fiodor 8597Suietov. 8598 8599Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 8600during 8601a read from a buffer or region field. (BZ 458) Fiodor Suietov. 8602 8603Example Code and Data Size: These are the sizes for the OS-independent 8604acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8605debug version of the code includes the debug output trace mechanism and 8606has 8607a much larger code and data size. 8608 8609 Previous Release: 8610 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8611 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8612 Current Release: 8613 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8614 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 8615 8616 86172) iASL Compiler/Disassembler and Tools: 8618 8619Fixed a compilation problem with the pre-defined Resource Descriptor 8620field 8621names where an "object does not exist" error could be incorrectly 8622generated 8623if the parent ResourceTemplate pathname places the template within a 8624different namespace scope than the current scope. (BZ 7212) 8625 8626Fixed a problem where the compiler could hang after syntax errors 8627detected 8628in an ElseIf construct. (BZ 453) 8629 8630Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 8631operator. An incorrect output filename was produced when this parameter 8632was 8633a null string (""). Now, the original input filename is used as the AML 8634output filename, with an ".aml" extension. 8635 8636Implemented a generic batch command mode for the AcpiExec utility 8637(execute 8638any AML debugger command) (Valery Podrezov). 8639 8640---------------------------------------- 864112 September 2006. Summary of changes for version 20060912: 8642 86431) ACPI CA Core Subsystem: 8644 8645Enhanced the implementation of the "serialized mode" of the interpreter 8646(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 8647specified, instead of creating a serialization semaphore per control 8648method, 8649the interpreter lock is simply no longer released before a blocking 8650operation during control method execution. This effectively makes the AML 8651Interpreter single-threaded. The overhead of a semaphore per-method is 8652eliminated. 8653 8654Fixed a regression where an error was no longer emitted if a control 8655method 8656attempts to create 2 objects of the same name. This once again returns 8657AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 8658that 8659will dynamically serialize the control method to possible prevent future 8660errors. (BZ 440) 8661 8662Integrated a fix for a problem with PCI Express HID detection in the PCI 8663Config Space setup procedure. (BZ 7145) 8664 8665Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 8666AcpiHwInitialize function - the FADT registers are now validated when the 8667table is loaded. 8668 8669Added two new warnings during FADT verification - 1) if the FADT is 8670larger 8671than the largest known FADT version, and 2) if there is a mismatch 8672between 8673a 867432-bit block address and the 64-bit X counterpart (when both are non- 8675zero.) 8676 8677Example Code and Data Size: These are the sizes for the OS-independent 8678acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8679debug version of the code includes the debug output trace mechanism and 8680has 8681a much larger code and data size. 8682 8683 Previous Release: 8684 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8685 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8686 Current Release: 8687 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 8688 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 8689 8690 86912) iASL Compiler/Disassembler and Tools: 8692 8693Fixed a problem with the implementation of the Switch() operator where 8694the 8695temporary variable was declared too close to the actual Switch, instead 8696of 8697at method level. This could cause a problem if the Switch() operator is 8698within a while loop, causing an error on the second iteration. (BZ 460) 8699 8700Disassembler - fix for error emitted for unknown type for target of scope 8701operator. Now, ignore it and continue. 8702 8703Disassembly of an FADT now verifies the input FADT and reports any errors 8704found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 8705 8706Disassembly of raw data buffers with byte initialization data now 8707prefixes 8708each output line with the current buffer offset. 8709 8710Disassembly of ASF! table now includes all variable-length data fields at 8711the end of some of the subtables. 8712 8713The disassembler now emits a comment if a buffer appears to be a 8714ResourceTemplate, but cannot be disassembled as such because the EndTag 8715does 8716not appear at the very end of the buffer. 8717 8718AcpiExec - Added the "-t" command line option to enable the serialized 8719mode 8720of the AML interpreter. 8721 8722---------------------------------------- 872331 August 2006. Summary of changes for version 20060831: 8724 87251) ACPI CA Core Subsystem: 8726 8727Miscellaneous fixes for the Table Manager: 8728- Correctly initialize internal common FADT for all 64-bit "X" fields 8729- Fixed a couple table mapping issues during table load 8730- Fixed a couple alignment issues for IA64 8731- Initialize input array to zero in AcpiInitializeTables 8732- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 8733AcpiGetTableByIndex 8734 8735Change for GPE support: when a "wake" GPE is received, all wake GPEs are 8736now 8737immediately disabled to prevent the waking GPE from firing again and to 8738prevent other wake GPEs from interrupting the wake process. 8739 8740Added the AcpiGpeCount global that tracks the number of processed GPEs, 8741to 8742be used for debugging systems with a large number of ACPI interrupts. 8743 8744Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 8745both the ACPICA headers and the disassembler. 8746 8747Example Code and Data Size: These are the sizes for the OS-independent 8748acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8749debug version of the code includes the debug output trace mechanism and 8750has 8751a much larger code and data size. 8752 8753 Previous Release: 8754 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8755 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8756 Current Release: 8757 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 8758 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 8759 8760 87612) iASL Compiler/Disassembler and Tools: 8762 8763Disassembler support for the DMAR ACPI table. 8764 8765---------------------------------------- 876623 August 2006. Summary of changes for version 20060823: 8767 87681) ACPI CA Core Subsystem: 8769 8770The Table Manager component has been completely redesigned and 8771reimplemented. The new design is much simpler, and reduces the overall 8772code 8773and data size of the kernel-resident ACPICA by approximately 5%. Also, it 8774is 8775now possible to obtain the ACPI tables very early during kernel 8776initialization, even before dynamic memory management is initialized. 8777(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 8778 8779Obsolete ACPICA interfaces: 8780 8781- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 8782init 8783time). 8784- AcpiLoadTable: Not needed. 8785- AcpiUnloadTable: Not needed. 8786 8787New ACPICA interfaces: 8788 8789- AcpiInitializeTables: Must be called before the table manager can be 8790used. 8791- AcpiReallocateRootTable: Used to transfer the root table to dynamically 8792allocated memory after it becomes available. 8793- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 8794tables 8795in the RSDT/XSDT. 8796 8797Other ACPICA changes: 8798 8799- AcpiGetTableHeader returns the actual mapped table header, not a copy. 8800Use 8801AcpiOsUnmapMemory to free this mapping. 8802- AcpiGetTable returns the actual mapped table. The mapping is managed 8803internally and must not be deleted by the caller. Use of this interface 8804causes no additional dynamic memory allocation. 8805- AcpiFindRootPointer: Support for physical addressing has been 8806eliminated, 8807it appeared to be unused. 8808- The interface to AcpiOsMapMemory has changed to be consistent with the 8809other allocation interfaces. 8810- The interface to AcpiOsGetRootPointer has changed to eliminate 8811unnecessary 8812parameters. 8813- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 881464- 8815bit platforms. Was previously 64 bits on all platforms. 8816- The interface to the ACPI Global Lock acquire/release macros have 8817changed 8818slightly since ACPICA no longer keeps a local copy of the FACS with a 8819constructed pointer to the actual global lock. 8820 8821Porting to the new table manager: 8822 8823- AcpiInitializeTables: Must be called once, and can be called anytime 8824during the OS initialization process. It allows the host to specify an 8825area 8826of memory to be used to store the internal version of the RSDT/XSDT (root 8827table). This allows the host to access ACPI tables before memory 8828management 8829is initialized and running. 8830- AcpiReallocateRootTable: Can be called after memory management is 8831running 8832to copy the root table to a dynamically allocated array, freeing up the 8833scratch memory specified in the call to AcpiInitializeTables. 8834- AcpiSubsystemInitialize: This existing interface is independent of the 8835Table Manager, and does not have to be called before the Table Manager 8836can 8837be used, it only must be called before the rest of ACPICA can be used. 8838- ACPI Tables: Some changes have been made to the names and structure of 8839the 8840actbl.h and actbl1.h header files and may require changes to existing 8841code. 8842For example, bitfields have been completely removed because of their lack 8843of 8844portability across C compilers. 8845- Update interfaces to the Global Lock acquire/release macros if local 8846versions are used. (see acwin.h) 8847 8848Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 8849 8850New files: tbfind.c 8851 8852Example Code and Data Size: These are the sizes for the OS-independent 8853acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8854debug version of the code includes the debug output trace mechanism and 8855has 8856a much larger code and data size. 8857 8858 Previous Release: 8859 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8860 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8861 Current Release: 8862 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8863 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8864 8865 88662) iASL Compiler/Disassembler and Tools: 8867 8868No changes for this release. 8869 8870---------------------------------------- 887121 July 2006. Summary of changes for version 20060721: 8872 88731) ACPI CA Core Subsystem: 8874 8875The full source code for the ASL test suite used to validate the iASL 8876compiler and the ACPICA core subsystem is being released with the ACPICA 8877source for the first time. The source is contained in a separate package 8878and 8879consists of over 1100 files that exercise all ASL/AML operators. The 8880package 8881should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 8882Fiodor 8883Suietov) 8884 8885Completed a new design and implementation for support of the ACPI Global 8886Lock. On the OS side, the global lock is now treated as a standard AML 8887mutex. Previously, multiple OS threads could "acquire" the global lock 8888simultaneously. However, this could cause the BIOS to be starved out of 8889the 8890lock - especially in cases such as the Embedded Controller driver where 8891there is a tight coupling between the OS and the BIOS. 8892 8893Implemented an optimization for the ACPI Global Lock interrupt mechanism. 8894The Global Lock interrupt handler no longer queues the execution of a 8895separate thread to signal the global lock semaphore. Instead, the 8896semaphore 8897is signaled directly from the interrupt handler. 8898 8899Implemented support within the AML interpreter for package objects that 8900contain a larger AML length (package list length) than the package 8901element 8902count. In this case, the length of the package is truncated to match the 8903package element count. Some BIOS code apparently modifies the package 8904length 8905on the fly, and this change supports this behavior. Provides 8906compatibility 8907with the MS AML interpreter. (With assistance from Fiodor Suietov) 8908 8909Implemented a temporary fix for the BankValue parameter of a Bank Field 8910to 8911support all constant values, now including the Zero and One opcodes. 8912Evaluation of this parameter must eventually be converted to a full 8913TermArg 8914evaluation. A not-implemented error is now returned (temporarily) for 8915non- 8916constant values for this parameter. 8917 8918Fixed problem reports (Fiodor Suietov) integrated: 8919- Fix for premature object deletion after CopyObject on Operation Region 8920(BZ 8921350) 8922 8923Example Code and Data Size: These are the sizes for the OS-independent 8924acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8925debug version of the code includes the debug output trace mechanism and 8926has 8927a much larger code and data size. 8928 8929 Previous Release: 8930 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 8931 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 8932 Current Release: 8933 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8934 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8935 8936 89372) iASL Compiler/Disassembler and Tools: 8938 8939No changes for this release. 8940 8941---------------------------------------- 894207 July 2006. Summary of changes for version 20060707: 8943 89441) ACPI CA Core Subsystem: 8945 8946Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 8947that do not allow the initialization of address pointers within packed 8948structures - even though the hardware itself may support misaligned 8949transfers. Some of the debug data structures are packed by default to 8950minimize size. 8951 8952Added an error message for the case where AcpiOsGetThreadId() returns 8953zero. 8954A non-zero value is required by the core ACPICA code to ensure the proper 8955operation of AML mutexes and recursive control methods. 8956 8957The DSDT is now the only ACPI table that determines whether the AML 8958interpreter is in 32-bit or 64-bit mode. Not really a functional change, 8959but 8960the hooks for per-table 32/64 switching have been removed from the code. 8961A 8962clarification to the ACPI specification is forthcoming in ACPI 3.0B. 8963 8964Fixed a possible leak of an OwnerID in the error path of 8965AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 8966deletion to a single place in AcpiTbUninstallTable to correct possible 8967leaks 8968when using the AcpiTbDeleteTablesByType interface (with assistance from 8969Lance Ortiz.) 8970 8971Fixed a problem with Serialized control methods where the semaphore 8972associated with the method could be over-signaled after multiple method 8973invocations. 8974 8975Fixed two issues with the locking of the internal namespace data 8976structure. 8977Both the Unload() operator and AcpiUnloadTable interface now lock the 8978namespace during the namespace deletion associated with the table unload 8979(with assistance from Linn Crosetto.) 8980 8981Fixed problem reports (Valery Podrezov) integrated: 8982- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 8983 8984Fixed problem reports (Fiodor Suietov) integrated: 8985- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 8986- On Address Space handler deletion, needless deactivation call (BZ 374) 8987- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 8988375) 8989- Possible memory leak, Notify sub-objects of Processor, Power, 8990ThermalZone 8991(BZ 376) 8992- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 8993- Minimum Length of RSDT should be validated (BZ 379) 8994- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 8995Handler (BZ (380) 8996- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 8997loaded 8998(BZ 381) 8999 9000Example Code and Data Size: These are the sizes for the OS-independent 9001acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9002debug version of the code includes the debug output trace mechanism and 9003has 9004a much larger code and data size. 9005 9006 Previous Release: 9007 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9008 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9009 Current Release: 9010 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 9011 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 9012 9013 90142) iASL Compiler/Disassembler and Tools: 9015 9016Fixed problem reports: 9017Compiler segfault when ASL contains a long (>1024) String declaration (BZ 9018436) 9019 9020---------------------------------------- 902123 June 2006. Summary of changes for version 20060623: 9022 90231) ACPI CA Core Subsystem: 9024 9025Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 9026allows the type to be customized to the host OS for improved efficiency 9027(since a spinlock is usually a very small object.) 9028 9029Implemented support for "ignored" bits in the ACPI registers. According 9030to 9031the ACPI specification, these bits should be preserved when writing the 9032registers via a read/modify/write cycle. There are 3 bits preserved in 9033this 9034manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 9035 9036Implemented the initial deployment of new OSL mutex interfaces. Since 9037some 9038host operating systems have separate mutex and semaphore objects, this 9039feature was requested. The base code now uses mutexes (and the new mutex 9040interfaces) wherever a binary semaphore was used previously. However, for 9041the current release, the mutex interfaces are defined as macros to map 9042them 9043to the existing semaphore interfaces. Therefore, no OSL changes are 9044required 9045at this time. (See acpiosxf.h) 9046 9047Fixed several problems with the support for the control method SyncLevel 9048parameter. The SyncLevel now works according to the ACPI specification 9049and 9050in concert with the Mutex SyncLevel parameter, since the current 9051SyncLevel 9052is a property of the executing thread. Mutual exclusion for control 9053methods 9054is now implemented with a mutex instead of a semaphore. 9055 9056Fixed three instances of the use of the C shift operator in the bitfield 9057support code (exfldio.c) to avoid the use of a shift value larger than 9058the 9059target data width. The behavior of C compilers is undefined in this case 9060and 9061can cause unpredictable results, and therefore the case must be detected 9062and 9063avoided. (Fiodor Suietov) 9064 9065Added an info message whenever an SSDT or OEM table is loaded dynamically 9066via the Load() or LoadTable() ASL operators. This should improve 9067debugging 9068capability since it will show exactly what tables have been loaded 9069(beyond 9070the tables present in the RSDT/XSDT.) 9071 9072Example Code and Data Size: These are the sizes for the OS-independent 9073acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9074debug version of the code includes the debug output trace mechanism and 9075has 9076a much larger code and data size. 9077 9078 Previous Release: 9079 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9080 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9081 Current Release: 9082 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 9083 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 9084 9085 90862) iASL Compiler/Disassembler and Tools: 9087 9088No changes for this release. 9089 9090---------------------------------------- 909108 June 2006. Summary of changes for version 20060608: 9092 90931) ACPI CA Core Subsystem: 9094 9095Converted the locking mutex used for the ACPI hardware to a spinlock. 9096This 9097change should eliminate all problems caused by attempting to acquire a 9098semaphore at interrupt level, and it means that all ACPICA external 9099interfaces that directly access the ACPI hardware can be safely called 9100from 9101interrupt level. OSL code that implements the semaphore interfaces should 9102be 9103able to eliminate any workarounds for being called at interrupt level. 9104 9105Fixed a regression introduced in 20060526 where the ACPI device 9106initialization could be prematurely aborted with an AE_NOT_FOUND if a 9107device 9108did not have an optional _INI method. 9109 9110Fixed an IndexField issue where a write to the Data Register should be 9111limited in size to the AccessSize (width) of the IndexField itself. (BZ 9112433, 9113Fiodor Suietov) 9114 9115Fixed problem reports (Valery Podrezov) integrated: 9116- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 9117 9118Fixed problem reports (Fiodor Suietov) integrated: 9119- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 9120 9121Removed four global mutexes that were obsolete and were no longer being 9122used. 9123 9124Example Code and Data Size: These are the sizes for the OS-independent 9125acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9126debug version of the code includes the debug output trace mechanism and 9127has 9128a much larger code and data size. 9129 9130 Previous Release: 9131 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9132 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9133 Current Release: 9134 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 9135 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 9136 9137 91382) iASL Compiler/Disassembler and Tools: 9139 9140Fixed a fault when using -g option (get tables from registry) on Windows 9141machines. 9142 9143Fixed problem reports integrated: 9144- Generate error if CreateField NumBits parameter is zero. (BZ 405) 9145- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 9146Suietov) 9147- Global table revision override (-r) is ignored (BZ 413) 9148 9149---------------------------------------- 915026 May 2006. Summary of changes for version 20060526: 9151 91521) ACPI CA Core Subsystem: 9153 9154Restructured, flattened, and simplified the internal interfaces for 9155namespace object evaluation - resulting in smaller code, less CPU stack 9156use, 9157and fewer interfaces. (With assistance from Mikhail Kouzmich) 9158 9159Fixed a problem with the CopyObject operator where the first parameter 9160was 9161not typed correctly for the parser, interpreter, compiler, and 9162disassembler. 9163Caused various errors and unexpected behavior. 9164 9165Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 9166produced incorrect results with some C compilers. Since the behavior of C 9167compilers when the shift value is larger than the datatype width is 9168apparently not well defined, the interpreter now detects this condition 9169and 9170simply returns zero as expected in all such cases. (BZ 395) 9171 9172Fixed problem reports (Valery Podrezov) integrated: 9173- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 9174- Allow interpreter to handle nested method declarations (BZ 5361) 9175 9176Fixed problem reports (Fiodor Suietov) integrated: 9177- AcpiTerminate doesn't free debug memory allocation list objects (BZ 9178355) 9179- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 9180356) 9181- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 9182- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 9183- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 9184- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 9185- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 9186- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 9187- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 9188365) 9189- Status of the Global Initialization Handler call not used (BZ 366) 9190- Incorrect object parameter to Global Initialization Handler (BZ 367) 9191 9192Example Code and Data Size: These are the sizes for the OS-independent 9193acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9194debug version of the code includes the debug output trace mechanism and 9195has 9196a much larger code and data size. 9197 9198 Previous Release: 9199 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9200 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9201 Current Release: 9202 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 9203 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 9204 9205 92062) iASL Compiler/Disassembler and Tools: 9207 9208Modified the parser to allow the names IO, DMA, and IRQ to be used as 9209namespace identifiers with no collision with existing resource descriptor 9210macro names. This provides compatibility with other ASL compilers and is 9211most useful for disassembly/recompilation of existing tables without 9212parse 9213errors. (With assistance from Thomas Renninger) 9214 9215Disassembler: fixed an incorrect disassembly problem with the 9216DataTableRegion and CopyObject operators. Fixed a possible fault during 9217disassembly of some Alias operators. 9218 9219---------------------------------------- 922012 May 2006. Summary of changes for version 20060512: 9221 92221) ACPI CA Core Subsystem: 9223 9224Replaced the AcpiOsQueueForExecution interface with a new interface named 9225AcpiOsExecute. The major difference is that the new interface does not 9226have 9227a Priority parameter, this appeared to be useless and has been replaced 9228by 9229a 9230Type parameter. The Type tells the host what type of execution is being 9231requested, such as global lock handler, notify handler, GPE handler, etc. 9232This allows the host to queue and execute the request as appropriate for 9233the 9234request type, possibly using different work queues and different 9235priorities 9236for the various request types. This enables fixes for multithreading 9237deadlock problems such as BZ #5534, and will require changes to all 9238existing 9239OS interface layers. (Alexey Starikovskiy and Bob Moore) 9240 9241Fixed a possible memory leak associated with the support for the so- 9242called 9243"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 9244Suietov) 9245 9246Fixed a problem with the Load() operator where a table load from an 9247operation region could overwrite an internal table buffer by up to 7 9248bytes 9249and cause alignment faults on IPF systems. (With assistance from Luming 9250Yu) 9251 9252Example Code and Data Size: These are the sizes for the OS-independent 9253acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9254debug version of the code includes the debug output trace mechanism and 9255has 9256a much larger code and data size. 9257 9258 Previous Release: 9259 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9260 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9261 Current Release: 9262 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 9263 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 9264 9265 9266 92672) iASL Compiler/Disassembler and Tools: 9268 9269Disassembler: Implemented support to cross reference the internal 9270namespace 9271and automatically generate ASL External() statements for symbols not 9272defined 9273within the current table being disassembled. This will simplify the 9274disassembly and recompilation of interdependent tables such as SSDTs 9275since 9276these statements will no longer have to be added manually. 9277 9278Disassembler: Implemented experimental support to automatically detect 9279invocations of external control methods and generate appropriate 9280External() 9281statements. This is problematic because the AML cannot be correctly 9282parsed 9283until the number of arguments for each control method is known. 9284Currently, 9285standalone method invocations and invocations as the source operand of a 9286Store() statement are supported. 9287 9288Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 9289LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 9290LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 9291more readable and likely closer to the original ASL source. 9292 9293---------------------------------------- 929421 April 2006. Summary of changes for version 20060421: 9295 92961) ACPI CA Core Subsystem: 9297 9298Removed a device initialization optimization introduced in 20051216 where 9299the _STA method was not run unless an _INI was also present for the same 9300device. This optimization could cause problems because it could allow 9301_INI 9302methods to be run within a not-present device subtree. (If a not-present 9303device had no _INI, _STA would not be run, the not-present status would 9304not 9305be discovered, and the children of the device would be incorrectly 9306traversed.) 9307 9308Implemented a new _STA optimization where namespace subtrees that do not 9309contain _INI are identified and ignored during device initialization. 9310Selectively running _STA can significantly improve boot time on large 9311machines (with assistance from Len Brown.) 9312 9313Implemented support for the device initialization case where the returned 9314_STA flags indicate a device not-present but functioning. In this case, 9315_INI 9316is not run, but the device children are examined for presence, as per the 9317ACPI specification. 9318 9319Implemented an additional change to the IndexField support in order to 9320conform to MS behavior. The value written to the Index Register is not 9321simply a byte offset, it is a byte offset in units of the access width of 9322the parent Index Field. (Fiodor Suietov) 9323 9324Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 9325interface is called during the creation of all AML operation regions, and 9326allows the host OS to exert control over what addresses it will allow the 9327AML code to access. Operation Regions whose addresses are disallowed will 9328cause a runtime exception when they are actually accessed (will not 9329affect 9330or abort table loading.) See oswinxf or osunixxf for an example 9331implementation. 9332 9333Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 9334interface allows the host OS to match the various "optional" 9335interface/behavior strings for the _OSI predefined control method as 9336appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 9337for an example implementation. 9338 9339Restructured and corrected various problems in the exception handling 9340code 9341paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 9342(with assistance from Takayoshi Kochi.) 9343 9344Modified the Linux source converter to ignore quoted string literals 9345while 9346converting identifiers from mixed to lower case. This will correct 9347problems 9348with the disassembler and other areas where such strings must not be 9349modified. 9350 9351The ACPI_FUNCTION_* macros no longer require quotes around the function 9352name. This allows the Linux source converter to convert the names, now 9353that 9354the converter ignores quoted strings. 9355 9356Example Code and Data Size: These are the sizes for the OS-independent 9357acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9358debug version of the code includes the debug output trace mechanism and 9359has 9360a much larger code and data size. 9361 9362 Previous Release: 9363 9364 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9365 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9366 Current Release: 9367 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 9368 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 9369 9370 93712) iASL Compiler/Disassembler and Tools: 9372 9373Implemented 3 new warnings for iASL, and implemented multiple warning 9374levels 9375(w2 flag). 9376 93771) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 9378not 9379WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 9380check for the possible timeout, a warning is issued. 9381 93822) Useless operators: If an ASL operator does not specify an optional 9383target 9384operand and it also does not use the function return value from the 9385operator, a warning is issued since the operator effectively does 9386nothing. 9387 93883) Unreferenced objects: If a namespace object is created, but never 9389referenced, a warning is issued. This is a warning level 2 since there 9390are 9391cases where this is ok, such as when a secondary table is loaded that 9392uses 9393the unreferenced objects. Even so, care is taken to only flag objects 9394that 9395don't look like they will ever be used. For example, the reserved methods 9396(starting with an underscore) are usually not referenced because it is 9397expected that the OS will invoke them. 9398 9399---------------------------------------- 940031 March 2006. Summary of changes for version 20060331: 9401 94021) ACPI CA Core Subsystem: 9403 9404Implemented header file support for the following additional ACPI tables: 9405ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 9406support, 9407all current and known ACPI tables are now defined in the ACPICA headers 9408and 9409are available for use by device drivers and other software. 9410 9411Implemented support to allow tables that contain ACPI names with invalid 9412characters to be loaded. Previously, this would cause the table load to 9413fail, but since there are several known cases of such tables on existing 9414machines, this change was made to enable ACPI support for them. Also, 9415this 9416matches the behavior of the Microsoft ACPI implementation. 9417 9418Fixed a couple regressions introduced during the memory optimization in 9419the 942020060317 release. The namespace node definition required additional 9421reorganization and an internal datatype that had been changed to 8-bit 9422was 9423restored to 32-bit. (Valery Podrezov) 9424 9425Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 9426could be passed through to AcpiOsReleaseObject which is unexpected. Such 9427null pointers are now trapped and ignored, matching the behavior of the 9428previous implementation before the deployment of AcpiOsReleaseObject. 9429(Valery Podrezov, Fiodor Suietov) 9430 9431Fixed a memory mapping leak during the deletion of a SystemMemory 9432operation 9433region where a cached memory mapping was not deleted. This became a 9434noticeable problem for operation regions that are defined within 9435frequently 9436used control methods. (Dana Meyers) 9437 9438Reorganized the ACPI table header files into two main files: one for the 9439ACPI tables consumed by the ACPICA core, and another for the 9440miscellaneous 9441ACPI tables that are consumed by the drivers and other software. The 9442various 9443FADT definitions were merged into one common section and three different 9444tables (ACPI 1.0, 1.0+, and 2.0) 9445 9446Example Code and Data Size: These are the sizes for the OS-independent 9447acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 9448debug version of the code includes the debug output trace mechanism and 9449has 9450a much larger code and data size. 9451 9452 Previous Release: 9453 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9454 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9455 Current Release: 9456 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 9457 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 9458 9459 94602) iASL Compiler/Disassembler and Tools: 9461 9462Disassembler: Implemented support to decode and format all non-AML ACPI 9463tables (tables other than DSDTs and SSDTs.) This includes the new tables 9464added to the ACPICA headers, therefore all current and known ACPI tables 9465are 9466supported. 9467 9468Disassembler: The change to allow ACPI names with invalid characters also 9469enables the disassembly of such tables. Invalid characters within names 9470are 9471changed to '*' to make the name printable; the iASL compiler will still 9472generate an error for such names, however, since this is an invalid ACPI 9473character. 9474 9475Implemented an option for AcpiXtract (-a) to extract all tables found in 9476the 9477input file. The default invocation extracts only the DSDTs and SSDTs. 9478 9479Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 9480makefile for the AcpiXtract utility. 9481 9482---------------------------------------- 948317 March 2006. Summary of changes for version 20060317: 9484 94851) ACPI CA Core Subsystem: 9486 9487Implemented the use of a cache object for all internal namespace nodes. 9488Since there are about 1000 static nodes in a typical system, this will 9489decrease memory use for cache implementations that minimize per- 9490allocation 9491overhead (such as a slab allocator.) 9492 9493Removed the reference count mechanism for internal namespace nodes, since 9494it 9495was deemed unnecessary. This reduces the size of each namespace node by 9496about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 9497case, 9498and 32 bytes for the 64-bit case. 9499 9500Optimized several internal data structures to reduce object size on 64- 9501bit 9502platforms by packing data within the 64-bit alignment. This includes the 9503frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 9504instances corresponding to the namespace objects. 9505 9506Added two new strings for the predefined _OSI method: "Windows 2001.1 9507SP1" 9508and "Windows 2006". 9509 9510Split the allocation tracking mechanism out to a separate file, from 9511utalloc.c to uttrack.c. This mechanism appears to be only useful for 9512application-level code. Kernels may wish to not include uttrack.c in 9513distributions. 9514 9515Removed all remnants of the obsolete ACPI_REPORT_* macros and the 9516associated 9517code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 9518macros.) 9519 9520Code and Data Size: These are the sizes for the acpica.lib produced by 9521the 9522Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9523ACPI 9524driver or OSPM code. The debug version of the code includes the debug 9525output 9526trace mechanism and has a much larger code and data size. Note that these 9527values will vary depending on the efficiency of the compiler and the 9528compiler options used during generation. 9529 9530 Previous Release: 9531 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9532 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9533 Current Release: 9534 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 9535 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 9536 9537 95382) iASL Compiler/Disassembler and Tools: 9539 9540Implemented an ANSI C version of the acpixtract utility. This version 9541will 9542automatically extract the DSDT and all SSDTs from the input acpidump text 9543file and dump the binary output to separate files. It can also display a 9544summary of the input file including the headers for each table found and 9545will extract any single ACPI table, with any signature. (See 9546source/tools/acpixtract) 9547 9548---------------------------------------- 954910 March 2006. Summary of changes for version 20060310: 9550 95511) ACPI CA Core Subsystem: 9552 9553Tagged all external interfaces to the subsystem with the new 9554ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 9555assist 9556kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 9557macro. The default definition is NULL. 9558 9559Added the ACPI_THREAD_ID type for the return value from 9560AcpiOsGetThreadId. 9561This allows the host to define this as necessary to simplify kernel 9562integration. The default definition is ACPI_NATIVE_UINT. 9563 9564Fixed two interpreter problems related to error processing, the deletion 9565of 9566objects, and placing invalid pointers onto the internal operator result 9567stack. BZ 6028, 6151 (Valery Podrezov) 9568 9569Increased the reference count threshold where a warning is emitted for 9570large 9571reference counts in order to eliminate unnecessary warnings on systems 9572with 9573large namespaces (especially 64-bit.) Increased the value from 0x400 to 95740x800. 9575 9576Due to universal disagreement as to the meaning of the 'c' in the 9577calloc() 9578function, the ACPI_MEM_CALLOCATE macro has been renamed to 9579ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 9580ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 9581ACPI_FREE. 9582 9583Code and Data Size: These are the sizes for the acpica.lib produced by 9584the 9585Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9586ACPI 9587driver or OSPM code. The debug version of the code includes the debug 9588output 9589trace mechanism and has a much larger code and data size. Note that these 9590values will vary depending on the efficiency of the compiler and the 9591compiler options used during generation. 9592 9593 Previous Release: 9594 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9595 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9596 Current Release: 9597 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9598 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 9599 9600 96012) iASL Compiler/Disassembler: 9602 9603Disassembler: implemented support for symbolic resource descriptor 9604references. If a CreateXxxxField operator references a fixed offset 9605within 9606a 9607resource descriptor, a name is assigned to the descriptor and the offset 9608is 9609translated to the appropriate resource tag and pathname. The addition of 9610this support brings the disassembled code very close to the original ASL 9611source code and helps eliminate run-time errors when the disassembled 9612code 9613is modified (and recompiled) in such a way as to invalidate the original 9614fixed offsets. 9615 9616Implemented support for a Descriptor Name as the last parameter to the 9617ASL 9618Register() macro. This parameter was inadvertently left out of the ACPI 9619specification, and will be added for ACPI 3.0b. 9620 9621Fixed a problem where the use of the "_OSI" string (versus the full path 9622"\_OSI") caused an internal compiler error. ("No back ptr to op") 9623 9624Fixed a problem with the error message that occurs when an invalid string 9625is 9626used for a _HID object (such as one with an embedded asterisk: 9627"*PNP010A".) 9628The correct message is now displayed. 9629 9630---------------------------------------- 963117 February 2006. Summary of changes for version 20060217: 9632 96331) ACPI CA Core Subsystem: 9634 9635Implemented a change to the IndexField support to match the behavior of 9636the 9637Microsoft AML interpreter. The value written to the Index register is now 9638a 9639byte offset, no longer an index based upon the width of the Data 9640register. 9641This should fix IndexField problems seen on some machines where the Data 9642register is not exactly one byte wide. The ACPI specification will be 9643clarified on this point. 9644 9645Fixed a problem where several resource descriptor types could overrun the 9646internal descriptor buffer due to size miscalculation: VendorShort, 9647VendorLong, and Interrupt. This was noticed on IA64 machines, but could 9648affect all platforms. 9649 9650Fixed a problem where individual resource descriptors were misaligned 9651within 9652the internal buffer, causing alignment faults on IA64 platforms. 9653 9654Code and Data Size: These are the sizes for the acpica.lib produced by 9655the 9656Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 9657ACPI 9658driver or OSPM code. The debug version of the code includes the debug 9659output 9660trace mechanism and has a much larger code and data size. Note that these 9661values will vary depending on the efficiency of the compiler and the 9662compiler options used during generation. 9663 9664 Previous Release: 9665 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9666 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9667 Current Release: 9668 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 9669 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 9670 9671 96722) iASL Compiler/Disassembler: 9673 9674Implemented support for new reserved names: _WDG and _WED are Microsoft 9675extensions for Windows Instrumentation Management, _TDL is a new ACPI- 9676defined method (Throttling Depth Limit.) 9677 9678Fixed a problem where a zero-length VendorShort or VendorLong resource 9679descriptor was incorrectly emitted as a descriptor of length one. 9680 9681---------------------------------------- 968210 February 2006. Summary of changes for version 20060210: 9683 96841) ACPI CA Core Subsystem: 9685 9686Removed a couple of extraneous ACPI_ERROR messages that appeared during 9687normal execution. These became apparent after the conversion from 9688ACPI_DEBUG_PRINT. 9689 9690Fixed a problem where the CreateField operator could hang if the BitIndex 9691or 9692NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 9693 9694Fixed a problem where a DeRefOf operation on a buffer object incorrectly 9695failed with an exception. This also fixes a couple of related RefOf and 9696DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 9697 9698Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 9699of 9700AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 9701BZ 97025480) 9703 9704Implemented a memory cleanup at the end of the execution of each 9705iteration 9706of an AML While() loop, preventing the accumulation of outstanding 9707objects. 9708(Valery Podrezov, BZ 5427) 9709 9710Eliminated a chunk of duplicate code in the object resolution code. 9711(Valery 9712Podrezov, BZ 5336) 9713 9714Fixed several warnings during the 64-bit code generation. 9715 9716The AcpiSrc source code conversion tool now inserts one line of 9717whitespace 9718after an if() statement that is followed immediately by a comment, 9719improving 9720readability of the Linux code. 9721 9722Code and Data Size: The current and previous library sizes for the core 9723subsystem are shown below. These are the code and data sizes for the 9724acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9725These 9726values do not include any ACPI driver or OSPM code. The debug version of 9727the 9728code includes the debug output trace mechanism and has a much larger code 9729and data size. Note that these values will vary depending on the 9730efficiency 9731of the compiler and the compiler options used during generation. 9732 9733 Previous Release: 9734 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9735 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9736 Current Release: 9737 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 9738 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 9739 9740 97412) iASL Compiler/Disassembler: 9742 9743Fixed a problem with the disassembly of a BankField operator with a 9744complex 9745expression for the BankValue parameter. 9746 9747---------------------------------------- 974827 January 2006. Summary of changes for version 20060127: 9749 97501) ACPI CA Core Subsystem: 9751 9752Implemented support in the Resource Manager to allow unresolved 9753namestring 9754references within resource package objects for the _PRT method. This 9755support 9756is in addition to the previously implemented unresolved reference support 9757within the AML parser. If the interpreter slack mode is enabled, these 9758unresolved references will be passed through to the caller as a NULL 9759package 9760entry. 9761 9762Implemented and deployed new macros and functions for error and warning 9763messages across the subsystem. These macros are simpler and generate less 9764code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 9765ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 9766macros remain defined to allow ACPI drivers time to migrate to the new 9767macros. 9768 9769Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 9770the 9771Acquire/Release Lock OSL interfaces. 9772 9773Fixed a problem where Alias ASL operators are sometimes not correctly 9774resolved, in both the interpreter and the iASL compiler. 9775 9776Fixed several problems with the implementation of the 9777ConcatenateResTemplate 9778ASL operator. As per the ACPI specification, zero length buffers are now 9779treated as a single EndTag. One-length buffers always cause a fatal 9780exception. Non-zero length buffers that do not end with a full 2-byte 9781EndTag 9782cause a fatal exception. 9783 9784Fixed a possible structure overwrite in the AcpiGetObjectInfo external 9785interface. (With assistance from Thomas Renninger) 9786 9787Code and Data Size: The current and previous library sizes for the core 9788subsystem are shown below. These are the code and data sizes for the 9789acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9790These 9791values do not include any ACPI driver or OSPM code. The debug version of 9792the 9793code includes the debug output trace mechanism and has a much larger code 9794and data size. Note that these values will vary depending on the 9795efficiency 9796of the compiler and the compiler options used during generation. 9797 9798 Previous Release: 9799 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9800 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9801 Current Release: 9802 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9803 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9804 9805 98062) iASL Compiler/Disassembler: 9807 9808Fixed an internal error that was generated for any forward references to 9809ASL 9810Alias objects. 9811 9812---------------------------------------- 981313 January 2006. Summary of changes for version 20060113: 9814 98151) ACPI CA Core Subsystem: 9816 9817Added 2006 copyright to all module headers and signons. This affects 9818virtually every file in the ACPICA core subsystem, iASL compiler, and the 9819utilities. 9820 9821Enhanced the ACPICA error reporting in order to simplify user migration 9822to 9823the non-debug version of ACPICA. Replaced all instances of the 9824ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 9825debug 9826levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 9827respectively. This preserves all error and warning messages in the non- 9828debug 9829version of the ACPICA code (this has been referred to as the "debug lite" 9830option.) Over 200 cases were converted to create a total of over 380 9831error/warning messages across the ACPICA code. This increases the code 9832and 9833data size of the default non-debug version of the code somewhat (about 983413K), 9835but all error/warning reporting may be disabled if desired (and code 9836eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 9837configuration option. The size of the debug version of ACPICA remains 9838about 9839the same. 9840 9841Fixed a memory leak within the AML Debugger "Set" command. One object was 9842not properly deleted for every successful invocation of the command. 9843 9844Code and Data Size: The current and previous library sizes for the core 9845subsystem are shown below. These are the code and data sizes for the 9846acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9847These 9848values do not include any ACPI driver or OSPM code. The debug version of 9849the 9850code includes the debug output trace mechanism and has a much larger code 9851and data size. Note that these values will vary depending on the 9852efficiency 9853of the compiler and the compiler options used during generation. 9854 9855 Previous Release: 9856 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9857 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9858 Current Release: 9859 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9860 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9861 9862 98632) iASL Compiler/Disassembler: 9864 9865The compiler now officially supports the ACPI 3.0a specification that was 9866released on December 30, 2005. (Specification is available at 9867www.acpi.info) 9868 9869---------------------------------------- 987016 December 2005. Summary of changes for version 20051216: 9871 98721) ACPI CA Core Subsystem: 9873 9874Implemented optional support to allow unresolved names within ASL Package 9875objects. A null object is inserted in the package when a named reference 9876cannot be located in the current namespace. Enabled via the interpreter 9877slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 9878machines 9879that contain such code. 9880 9881Implemented an optimization to the initialization sequence that can 9882improve 9883boot time. During ACPI device initialization, the _STA method is now run 9884if 9885and only if the _INI method exists. The _STA method is used to determine 9886if 9887the device is present; An _INI can only be run if _STA returns present, 9888but 9889it is a waste of time to run the _STA method if the _INI does not exist. 9890(Prototype and assistance from Dong Wei) 9891 9892Implemented use of the C99 uintptr_t for the pointer casting macros if it 9893is 9894available in the current compiler. Otherwise, the default (void *) cast 9895is 9896used as before. 9897 9898Fixed some possible memory leaks found within the execution path of the 9899Break, Continue, If, and CreateField operators. (Valery Podrezov) 9900 9901Fixed a problem introduced in the 20051202 release where an exception is 9902generated during method execution if a control method attempts to declare 9903another method. 9904 9905Moved resource descriptor string constants that are used by both the AML 9906disassembler and AML debugger to the common utilities directory so that 9907these components are independent. 9908 9909Implemented support in the AcpiExec utility (-e switch) to globally 9910ignore 9911exceptions during control method execution (method is not aborted.) 9912 9913Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 9914generation. 9915 9916Code and Data Size: The current and previous library sizes for the core 9917subsystem are shown below. These are the code and data sizes for the 9918acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9919These 9920values do not include any ACPI driver or OSPM code. The debug version of 9921the 9922code includes the debug output trace mechanism and has a much larger code 9923and data size. Note that these values will vary depending on the 9924efficiency 9925of the compiler and the compiler options used during generation. 9926 9927 Previous Release: 9928 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9929 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9930 Current Release: 9931 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9932 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9933 9934 99352) iASL Compiler/Disassembler: 9936 9937Fixed a problem where a CPU stack overflow fault could occur if a 9938recursive 9939method call was made from within a Return statement. 9940 9941---------------------------------------- 994202 December 2005. Summary of changes for version 20051202: 9943 99441) ACPI CA Core Subsystem: 9945 9946Modified the parsing of control methods to no longer create namespace 9947objects during the first pass of the parse. Objects are now created only 9948during the execute phase, at the moment the namespace creation operator 9949is 9950encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 9951This 9952should eliminate ALREADY_EXISTS exceptions seen on some machines where 9953reentrant control methods are protected by an AML mutex. The mutex will 9954now 9955correctly block multiple threads from attempting to create the same 9956object 9957more than once. 9958 9959Increased the number of available Owner Ids for namespace object tracking 9960from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 9961on 9962some machines with a large number of ACPI tables (either static or 9963dynamic). 9964 9965Fixed a problem with the AcpiExec utility where a fault could occur when 9966the 9967-b switch (batch mode) is used. 9968 9969Enhanced the namespace dump routine to output the owner ID for each 9970namespace object. 9971 9972Code and Data Size: The current and previous library sizes for the core 9973subsystem are shown below. These are the code and data sizes for the 9974acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9975These 9976values do not include any ACPI driver or OSPM code. The debug version of 9977the 9978code includes the debug output trace mechanism and has a much larger code 9979and data size. Note that these values will vary depending on the 9980efficiency 9981of the compiler and the compiler options used during generation. 9982 9983 Previous Release: 9984 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9985 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9986 Current Release: 9987 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9988 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9989 9990 99912) iASL Compiler/Disassembler: 9992 9993Fixed a parse error during compilation of certain Switch/Case constructs. 9994To 9995simplify the parse, the grammar now allows for multiple Default 9996statements 9997and this error is now detected and flagged during the analysis phase. 9998 9999Disassembler: The disassembly now includes the contents of the original 10000table header within a comment at the start of the file. This includes the 10001name and version of the original ASL compiler. 10002 10003---------------------------------------- 1000417 November 2005. Summary of changes for version 20051117: 10005 100061) ACPI CA Core Subsystem: 10007 10008Fixed a problem in the AML parser where the method thread count could be 10009decremented below zero if any errors occurred during the method parse 10010phase. 10011This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 10012machines. 10013This also fixed a related regression with the mechanism that detects and 10014corrects methods that cannot properly handle reentrancy (related to the 10015deployment of the new OwnerId mechanism.) 10016 10017Eliminated the pre-parsing of control methods (to detect errors) during 10018table load. Related to the problem above, this was causing unwind issues 10019if 10020any errors occurred during the parse, and it seemed to be overkill. A 10021table 10022load should not be aborted if there are problems with any single control 10023method, thus rendering this feature rather pointless. 10024 10025Fixed a problem with the new table-driven resource manager where an 10026internal 10027buffer overflow could occur for small resource templates. 10028 10029Implemented a new external interface, AcpiGetVendorResource. This 10030interface 10031will find and return a vendor-defined resource descriptor within a _CRS 10032or 10033_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 10034Helgaas. 10035 10036Removed the length limit (200) on string objects as per the upcoming ACPI 100373.0A specification. This affects the following areas of the interpreter: 100381) 10039any implicit conversion of a Buffer to a String, 2) a String object 10040result 10041of the ASL Concatentate operator, 3) the String object result of the ASL 10042ToString operator. 10043 10044Fixed a problem in the Windows OS interface layer (OSL) where a 10045WAIT_FOREVER 10046on a semaphore object would incorrectly timeout. This allows the 10047multithreading features of the AcpiExec utility to work properly under 10048Windows. 10049 10050Updated the Linux makefiles for the iASL compiler and AcpiExec to include 10051the recently added file named "utresrc.c". 10052 10053Code and Data Size: The current and previous library sizes for the core 10054subsystem are shown below. These are the code and data sizes for the 10055acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10056These 10057values do not include any ACPI driver or OSPM code. The debug version of 10058the 10059code includes the debug output trace mechanism and has a much larger code 10060and data size. Note that these values will vary depending on the 10061efficiency 10062of the compiler and the compiler options used during generation. 10063 10064 Previous Release: 10065 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10066 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10067 Current Release: 10068 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 10069 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10070 10071 100722) iASL Compiler/Disassembler: 10073 10074Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 10075specification. For the iASL compiler, this means that string literals 10076within 10077the source ASL can be of any length. 10078 10079Enhanced the listing output to dump the AML code for resource descriptors 10080immediately after the ASL code for each descriptor, instead of in a block 10081at 10082the end of the entire resource template. 10083 10084Enhanced the compiler debug output to dump the entire original parse tree 10085constructed during the parse phase, before any transforms are applied to 10086the 10087tree. The transformed tree is dumped also. 10088 10089---------------------------------------- 1009002 November 2005. Summary of changes for version 20051102: 10091 100921) ACPI CA Core Subsystem: 10093 10094Modified the subsystem initialization sequence to improve GPE support. 10095The 10096GPE initialization has been split into two parts in order to defer 10097execution 10098of the _PRW methods (Power Resources for Wake) until after the hardware 10099is 10100fully initialized and the SCI handler is installed. This allows the _PRW 10101methods to access fields protected by the Global Lock. This will fix 10102systems 10103where a NO_GLOBAL_LOCK exception has been seen during initialization. 10104 10105Converted the ACPI internal object disassemble and display code within 10106the 10107AML debugger to fully table-driven operation, reducing code size and 10108increasing maintainability. 10109 10110Fixed a regression with the ConcatenateResTemplate() ASL operator 10111introduced 10112in the 20051021 release. 10113 10114Implemented support for "local" internal ACPI object types within the 10115debugger "Object" command and the AcpiWalkNamespace external interfaces. 10116These local types include RegionFields, BankFields, IndexFields, Alias, 10117and 10118reference objects. 10119 10120Moved common AML resource handling code into a new file, "utresrc.c". 10121This 10122code is shared by both the Resource Manager and the AML Debugger. 10123 10124Code and Data Size: The current and previous library sizes for the core 10125subsystem are shown below. These are the code and data sizes for the 10126acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10127These 10128values do not include any ACPI driver or OSPM code. The debug version of 10129the 10130code includes the debug output trace mechanism and has a much larger code 10131and data size. Note that these values will vary depending on the 10132efficiency 10133of the compiler and the compiler options used during generation. 10134 10135 Previous Release: 10136 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10137 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10138 Current Release: 10139 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 10140 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 10141 10142 101432) iASL Compiler/Disassembler: 10144 10145Fixed a problem with very large initializer lists (more than 4000 10146elements) 10147for both Buffer and Package objects where the parse stack could overflow. 10148 10149Enhanced the pre-compile source code scan for non-ASCII characters to 10150ignore 10151characters within comment fields. The scan is now always performed and is 10152no 10153longer optional, detecting invalid characters within a source file 10154immediately rather than during the parse phase or later. 10155 10156Enhanced the ASL grammar definition to force early reductions on all 10157list- 10158style grammar elements so that the overall parse stack usage is greatly 10159reduced. This should improve performance and reduce the possibility of 10160parse 10161stack overflow. 10162 10163Eliminated all reduce/reduce conflicts in the iASL parser generation. 10164Also, 10165with the addition of a %expected statement, the compiler generates from 10166source with no warnings. 10167 10168Fixed a possible segment fault in the disassembler if the input filename 10169does not contain a "dot" extension (Thomas Renninger). 10170 10171---------------------------------------- 1017221 October 2005. Summary of changes for version 20051021: 10173 101741) ACPI CA Core Subsystem: 10175 10176Implemented support for the EM64T and other x86-64 processors. This 10177essentially entails recognizing that these processors support non-aligned 10178memory transfers. Previously, all 64-bit processors were assumed to lack 10179hardware support for non-aligned transfers. 10180 10181Completed conversion of the Resource Manager to nearly full table-driven 10182operation. Specifically, the resource conversion code (convert AML to 10183internal format and the reverse) and the debug code to dump internal 10184resource descriptors are fully table-driven, reducing code and data size 10185and 10186improving maintainability. 10187 10188The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 10189word 10190on 64-bit processors instead of a fixed 32-bit word. (With assistance 10191from 10192Alexey Starikovskiy) 10193 10194Implemented support within the resource conversion code for the Type- 10195Specific byte within the various ACPI 3.0 *WordSpace macros. 10196 10197Fixed some issues within the resource conversion code for the type- 10198specific 10199flags for both Memory and I/O address resource descriptors. For Memory, 10200implemented support for the MTP and TTP flags. For I/O, split the TRS and 10201TTP flags into two separate fields. 10202 10203Code and Data Size: The current and previous library sizes for the core 10204subsystem are shown below. These are the code and data sizes for the 10205acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10206These 10207values do not include any ACPI driver or OSPM code. The debug version of 10208the 10209code includes the debug output trace mechanism and has a much larger code 10210and data size. Note that these values will vary depending on the 10211efficiency 10212of the compiler and the compiler options used during generation. 10213 10214 Previous Release: 10215 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10216 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10217 Current Release: 10218 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 10219 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 10220 10221 10222 102232) iASL Compiler/Disassembler: 10224 10225Relaxed a compiler restriction that disallowed a ResourceIndex byte if 10226the 10227corresponding ResourceSource string was not also present in a resource 10228descriptor declaration. This restriction caused problems with existing 10229AML/ASL code that includes the Index byte without the string. When such 10230AML 10231was disassembled, it could not be compiled without modification. Further, 10232the modified code created a resource template with a different size than 10233the 10234original, breaking code that used fixed offsets into the resource 10235template 10236buffer. 10237 10238Removed a recent feature of the disassembler to ignore a lone 10239ResourceIndex 10240byte. This byte is now emitted if present so that the exact AML can be 10241reproduced when the disassembled code is recompiled. 10242 10243Improved comments and text alignment for the resource descriptor code 10244emitted by the disassembler. 10245 10246Implemented disassembler support for the ACPI 3.0 AccessSize field within 10247a 10248Register() resource descriptor. 10249 10250---------------------------------------- 1025130 September 2005. Summary of changes for version 20050930: 10252 102531) ACPI CA Core Subsystem: 10254 10255Completed a major overhaul of the Resource Manager code - specifically, 10256optimizations in the area of the AML/internal resource conversion code. 10257The 10258code has been optimized to simplify and eliminate duplicated code, CPU 10259stack 10260use has been decreased by optimizing function parameters and local 10261variables, and naming conventions across the manager have been 10262standardized 10263for clarity and ease of maintenance (this includes function, parameter, 10264variable, and struct/typedef names.) The update may force changes in some 10265driver code, depending on how resources are handled by the host OS. 10266 10267All Resource Manager dispatch and information tables have been moved to a 10268single location for clarity and ease of maintenance. One new file was 10269created, named "rsinfo.c". 10270 10271The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 10272guarantee that the argument is not evaluated twice, making them less 10273prone 10274to macro side-effects. However, since there exists the possibility of 10275additional stack use if a particular compiler cannot optimize them (such 10276as 10277in the debug generation case), the original macros are optionally 10278available. 10279Note that some invocations of the return_VALUE macro may now cause size 10280mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 10281to 10282eliminate these. (From Randy Dunlap) 10283 10284Implemented a new mechanism to enable debug tracing for individual 10285control 10286methods. A new external interface, AcpiDebugTrace, is provided to enable 10287this mechanism. The intent is to allow the host OS to easily enable and 10288disable tracing for problematic control methods. This interface can be 10289easily exposed to a user or debugger interface if desired. See the file 10290psxface.c for details. 10291 10292AcpiUtCallocate will now return a valid pointer if a length of zero is 10293specified - a length of one is used and a warning is issued. This matches 10294the behavior of AcpiUtAllocate. 10295 10296Code and Data Size: The current and previous library sizes for the core 10297subsystem are shown below. These are the code and data sizes for the 10298acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10299These 10300values do not include any ACPI driver or OSPM code. The debug version of 10301the 10302code includes the debug output trace mechanism and has a much larger code 10303and data size. Note that these values will vary depending on the 10304efficiency 10305of the compiler and the compiler options used during generation. 10306 10307 Previous Release: 10308 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10309 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10310 Current Release: 10311 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 10312 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 10313 10314 103152) iASL Compiler/Disassembler: 10316 10317A remark is issued if the effective compile-time length of a package or 10318buffer is zero. Previously, this was a warning. 10319 10320---------------------------------------- 1032116 September 2005. Summary of changes for version 20050916: 10322 103231) ACPI CA Core Subsystem: 10324 10325Fixed a problem within the Resource Manager where support for the Generic 10326Register descriptor was not fully implemented. This descriptor is now 10327fully 10328recognized, parsed, disassembled, and displayed. 10329 10330Completely restructured the Resource Manager code to utilize table-driven 10331dispatch and lookup, eliminating many of the large switch() statements. 10332This 10333reduces overall subsystem code size and code complexity. Affects the 10334resource parsing and construction, disassembly, and debug dump output. 10335 10336Cleaned up and restructured the debug dump output for all resource 10337descriptors. Improved readability of the output and reduced code size. 10338 10339Fixed a problem where changes to internal data structures caused the 10340optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 10341 10342Code and Data Size: The current and previous library sizes for the core 10343subsystem are shown below. These are the code and data sizes for the 10344acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 10345These 10346values do not include any ACPI driver or OSPM code. The debug version of 10347the 10348code includes the debug output trace mechanism and has a much larger code 10349and data size. Note that these values will vary depending on the 10350efficiency 10351of the compiler and the compiler options used during generation. 10352 10353 Previous Release: 10354 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10355 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10356 Current Release: 10357 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 10358 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 10359 10360 103612) iASL Compiler/Disassembler: 10362 10363Updated the disassembler to automatically insert an EndDependentFn() 10364macro 10365into the ASL stream if this macro is missing in the original AML code, 10366simplifying compilation of the resulting ASL module. 10367 10368Fixed a problem in the disassembler where a disassembled ResourceSource 10369string (within a large resource descriptor) was not surrounded by quotes 10370and 10371not followed by a comma, causing errors when the resulting ASL module was 10372compiled. Also, escape sequences within a ResourceSource string are now 10373handled correctly (especially "\\") 10374 10375---------------------------------------- 1037602 September 2005. Summary of changes for version 20050902: 10377 103781) ACPI CA Core Subsystem: 10379 10380Fixed a problem with the internal Owner ID allocation and deallocation 10381mechanisms for control method execution and recursive method invocation. 10382This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 10383messages seen on some systems. Recursive method invocation depth is 10384currently limited to 255. (Alexey Starikovskiy) 10385 10386Completely eliminated all vestiges of support for the "module-level 10387executable code" until this support is fully implemented and debugged. 10388This 10389should eliminate the NO_RETURN_VALUE exceptions seen during table load on 10390some systems that invoke this support. 10391 10392Fixed a problem within the resource manager code where the transaction 10393flags 10394for a 64-bit address descriptor were handled incorrectly in the type- 10395specific flag byte. 10396 10397Consolidated duplicate code within the address descriptor resource 10398manager 10399code, reducing overall subsystem code size. 10400 10401Fixed a fault when using the AML debugger "disassemble" command to 10402disassemble individual control methods. 10403 10404Removed references to the "release_current" directory within the Unix 10405release package. 10406 10407Code and Data Size: The current and previous core subsystem library sizes 10408are shown below. These are the code and data sizes for the acpica.lib 10409produced by the Microsoft Visual C++ 6.0 compiler. These values do not 10410include any ACPI driver or OSPM code. The debug version of the code 10411includes 10412the debug output trace mechanism and has a much larger code and data 10413size. 10414Note that these values will vary depending on the efficiency of the 10415compiler 10416and the compiler options used during generation. 10417 10418 Previous Release: 10419 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10420 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10421 Current Release: 10422 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 10423 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 10424 10425 104262) iASL Compiler/Disassembler: 10427 10428Implemented an error check for illegal duplicate values in the interrupt 10429and 10430dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 10431Interrupt(). 10432 10433Implemented error checking for the Irq() and IrqNoFlags() macros to 10434detect 10435too many values in the interrupt list (16 max) and invalid values in the 10436list (range 0 - 15) 10437 10438The maximum length string literal within an ASL file is now restricted to 10439200 characters as per the ACPI specification. 10440 10441Fixed a fault when using the -ln option (generate namespace listing). 10442 10443Implemented an error check to determine if a DescriptorName within a 10444resource descriptor has already been used within the current scope. 10445 10446---------------------------------------- 1044715 August 2005. Summary of changes for version 20050815: 10448 104491) ACPI CA Core Subsystem: 10450 10451Implemented a full bytewise compare to determine if a table load request 10452is 10453attempting to load a duplicate table. The compare is performed if the 10454table 10455signatures and table lengths match. This will allow different tables with 10456the same OEM Table ID and revision to be loaded - probably against the 10457ACPI 10458specification, but discovered in the field nonetheless. 10459 10460Added the changes.txt logfile to each of the zipped release packages. 10461 10462Code and Data Size: Current and previous core subsystem library sizes are 10463shown below. These are the code and data sizes for the acpica.lib 10464produced 10465by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10466any ACPI driver or OSPM code. The debug version of the code includes the 10467debug output trace mechanism and has a much larger code and data size. 10468Note 10469that these values will vary depending on the efficiency of the compiler 10470and 10471the compiler options used during generation. 10472 10473 Previous Release: 10474 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10475 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10476 Current Release: 10477 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10478 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 10479 10480 104812) iASL Compiler/Disassembler: 10482 10483Fixed a problem where incorrect AML code could be generated for Package 10484objects if optimization is disabled (via the -oa switch). 10485 10486Fixed a problem with where incorrect AML code is generated for variable- 10487length packages when the package length is not specified and the number 10488of 10489initializer values is greater than 255. 10490 10491 10492---------------------------------------- 1049329 July 2005. Summary of changes for version 20050729: 10494 104951) ACPI CA Core Subsystem: 10496 10497Implemented support to ignore an attempt to install/load a particular 10498ACPI 10499table more than once. Apparently there exists BIOS code that repeatedly 10500attempts to load the same SSDT upon certain events. With assistance from 10501Venkatesh Pallipadi. 10502 10503Restructured the main interface to the AML parser in order to correctly 10504handle all exceptional conditions. This will prevent leakage of the 10505OwnerId 10506resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 10507some 10508machines. With assistance from Alexey Starikovskiy. 10509 10510Support for "module level code" has been disabled in this version due to 10511a 10512number of issues that have appeared on various machines. The support can 10513be 10514enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 10515compilation. When the issues are fully resolved, the code will be enabled 10516by 10517default again. 10518 10519Modified the internal functions for debug print support to define the 10520FunctionName parameter as a (const char *) for compatibility with 10521compiler 10522built-in macros such as __FUNCTION__, etc. 10523 10524Linted the entire ACPICA source tree for both 32-bit and 64-bit. 10525 10526Implemented support to display an object count summary for the AML 10527Debugger 10528commands Object and Methods. 10529 10530Code and Data Size: Current and previous core subsystem library sizes are 10531shown below. These are the code and data sizes for the acpica.lib 10532produced 10533by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10534any ACPI driver or OSPM code. The debug version of the code includes the 10535debug output trace mechanism and has a much larger code and data size. 10536Note 10537that these values will vary depending on the efficiency of the compiler 10538and 10539the compiler options used during generation. 10540 10541 Previous Release: 10542 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10543 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10544 Current Release: 10545 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 10546 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 10547 10548 105492) iASL Compiler/Disassembler: 10550 10551Fixed a regression that appeared in the 20050708 version of the compiler 10552where an error message was inadvertently emitted for invocations of the 10553_OSI 10554reserved control method. 10555 10556---------------------------------------- 1055708 July 2005. Summary of changes for version 20050708: 10558 105591) ACPI CA Core Subsystem: 10560 10561The use of the CPU stack in the debug version of the subsystem has been 10562considerably reduced. Previously, a debug structure was declared in every 10563function that used the debug macros. This structure has been removed in 10564favor of declaring the individual elements as parameters to the debug 10565functions. This reduces the cumulative stack use during nested execution 10566of 10567ACPI function calls at the cost of a small increase in the code size of 10568the 10569debug version of the subsystem. With assistance from Alexey Starikovskiy 10570and 10571Len Brown. 10572 10573Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 10574headers to define a macro that will return the current function name at 10575runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 10576by 10577the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 10578compiler-dependent header, the function name is saved on the CPU stack 10579(one 10580pointer per function.) This mechanism is used because apparently there 10581exists no standard ANSI-C defined macro that that returns the function 10582name. 10583 10584Redesigned and reimplemented the "Owner ID" mechanism used to track 10585namespace objects created/deleted by ACPI tables and control method 10586execution. A bitmap is now used to allocate and free the IDs, thus 10587solving 10588the wraparound problem present in the previous implementation. The size 10589of 10590the namespace node descriptor was reduced by 2 bytes as a result (Alexey 10591Starikovskiy). 10592 10593Removed the UINT32_BIT and UINT16_BIT types that were used for the 10594bitfield 10595flag definitions within the headers for the predefined ACPI tables. These 10596have been replaced by UINT8_BIT in order to increase the code portability 10597of 10598the subsystem. If the use of UINT8 remains a problem, we may be forced to 10599eliminate bitfields entirely because of a lack of portability. 10600 10601Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 10602This 10603is a frequently used function and this improvement increases the 10604performance 10605of the entire subsystem (Alexey Starikovskiy). 10606 10607Fixed several possible memory leaks and the inverse - premature object 10608deletion (Alexey Starikovskiy). 10609 10610Code and Data Size: Current and previous core subsystem library sizes are 10611shown below. These are the code and data sizes for the acpica.lib 10612produced 10613by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10614any ACPI driver or OSPM code. The debug version of the code includes the 10615debug output trace mechanism and has a much larger code and data size. 10616Note 10617that these values will vary depending on the efficiency of the compiler 10618and 10619the compiler options used during generation. 10620 10621 Previous Release: 10622 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10623 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10624 Current Release: 10625 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 10626 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 10627 10628---------------------------------------- 1062924 June 2005. Summary of changes for version 20050624: 10630 106311) ACPI CA Core Subsystem: 10632 10633Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 10634the host-defined cache object. This allows the OSL implementation to 10635define 10636and type this object in any manner desired, simplifying the OSL 10637implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 10638Linux, and should be defined in the OS-specific header file for other 10639operating systems as required. 10640 10641Changed the interface to AcpiOsAcquireObject to directly return the 10642requested object as the function return (instead of ACPI_STATUS.) This 10643change was made for performance reasons, since this is the purpose of the 10644interface in the first place. AcpiOsAcquireObject is now similar to the 10645AcpiOsAllocate interface. 10646 10647Implemented a new AML debugger command named Businfo. This command 10648displays 10649information about all devices that have an associate _PRT object. The 10650_ADR, 10651_HID, _UID, and _CID are displayed for these devices. 10652 10653Modified the initialization sequence in AcpiInitializeSubsystem to call 10654the 10655OSL interface AcpiOslInitialize first, before any local initialization. 10656This 10657change was required because the global initialization now calls OSL 10658interfaces. 10659 10660Enhanced the Dump command to display the entire contents of Package 10661objects 10662(including all sub-objects and their values.) 10663 10664Restructured the code base to split some files because of size and/or 10665because the code logically belonged in a separate file. New files are 10666listed 10667below. All makefiles and project files included in the ACPI CA release 10668have 10669been updated. 10670 utilities/utcache.c /* Local cache interfaces */ 10671 utilities/utmutex.c /* Local mutex support */ 10672 utilities/utstate.c /* State object support */ 10673 interpreter/parser/psloop.c /* Main AML parse loop */ 10674 10675Code and Data Size: Current and previous core subsystem library sizes are 10676shown below. These are the code and data sizes for the acpica.lib 10677produced 10678by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10679any ACPI driver or OSPM code. The debug version of the code includes the 10680debug output trace mechanism and has a much larger code and data size. 10681Note 10682that these values will vary depending on the efficiency of the compiler 10683and 10684the compiler options used during generation. 10685 10686 Previous Release: 10687 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10688 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10689 Current Release: 10690 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 10691 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 10692 10693 106942) iASL Compiler/Disassembler: 10695 10696Fixed a regression introduced in version 20050513 where the use of a 10697Package 10698object within a Case() statement caused a compile time exception. The 10699original behavior has been restored (a Match() operator is emitted.) 10700 10701---------------------------------------- 1070217 June 2005. Summary of changes for version 20050617: 10703 107041) ACPI CA Core Subsystem: 10705 10706Moved the object cache operations into the OS interface layer (OSL) to 10707allow 10708the host OS to handle these operations if desired (for example, the Linux 10709OSL will invoke the slab allocator). This support is optional; the 10710compile 10711time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 10712cache 10713code in the ACPI CA core. The new OSL interfaces are shown below. See 10714utalloc.c for an example implementation, and acpiosxf.h for the exact 10715interface definitions. With assistance from Alexey Starikovskiy. 10716 AcpiOsCreateCache 10717 AcpiOsDeleteCache 10718 AcpiOsPurgeCache 10719 AcpiOsAcquireObject 10720 AcpiOsReleaseObject 10721 10722Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 10723return 10724and restore a flags parameter. This fits better with many OS lock models. 10725Note: the current execution state (interrupt handler or not) is no longer 10726passed to these interfaces. If necessary, the OSL must determine this 10727state 10728by itself, a simple and fast operation. With assistance from Alexey 10729Starikovskiy. 10730 10731Fixed a problem in the ACPI table handling where a valid XSDT was assumed 10732present if the revision of the RSDP was 2 or greater. According to the 10733ACPI 10734specification, the XSDT is optional in all cases, and the table manager 10735therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 10736Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 10737contain 10738only the RSDT. 10739 10740Fixed an interpreter problem with the Mid() operator in the case of an 10741input 10742string where the resulting output string is of zero length. It now 10743correctly 10744returns a valid, null terminated string object instead of a string object 10745with a null pointer. 10746 10747Fixed a problem with the control method argument handling to allow a 10748store 10749to an Arg object that already contains an object of type Device. The 10750Device 10751object is now correctly overwritten. Previously, an error was returned. 10752 10753 10754Enhanced the debugger Find command to emit object values in addition to 10755the 10756found object pathnames. The output format is the same as the dump 10757namespace 10758command. 10759 10760Enhanced the debugger Set command. It now has the ability to set the 10761value 10762of any Named integer object in the namespace (Previously, only method 10763locals 10764and args could be set.) 10765 10766Code and Data Size: Current and previous core subsystem library sizes are 10767shown below. These are the code and data sizes for the acpica.lib 10768produced 10769by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10770any ACPI driver or OSPM code. The debug version of the code includes the 10771debug output trace mechanism and has a much larger code and data size. 10772Note 10773that these values will vary depending on the efficiency of the compiler 10774and 10775the compiler options used during generation. 10776 10777 Previous Release: 10778 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10779 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10780 Current Release: 10781 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 10782 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 10783 10784 107852) iASL Compiler/Disassembler: 10786 10787Fixed a regression in the disassembler where if/else/while constructs 10788were 10789output incorrectly. This problem was introduced in the previous release 10790(20050526). This problem also affected the single-step disassembly in the 10791debugger. 10792 10793Fixed a problem where compiling the reserved _OSI method would randomly 10794(but 10795rarely) produce compile errors. 10796 10797Enhanced the disassembler to emit compilable code in the face of 10798incorrect 10799AML resource descriptors. If the optional ResourceSourceIndex is present, 10800but the ResourceSource is not, do not emit the ResourceSourceIndex in the 10801disassembly. Otherwise, the resulting code cannot be compiled without 10802errors. 10803 10804---------------------------------------- 1080526 May 2005. Summary of changes for version 20050526: 10806 108071) ACPI CA Core Subsystem: 10808 10809Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 10810the module level (not within a control method.) These opcodes are 10811executed 10812exactly once at the time the table is loaded. This type of code was legal 10813up 10814until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 10815in 10816order to provide backwards compatibility with earlier BIOS 10817implementations. 10818This eliminates the "Encountered executable code at module level" warning 10819that was previously generated upon detection of such code. 10820 10821Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 10822inadvertently be generated during the lookup of namespace objects in the 10823second pass parse of ACPI tables and control methods. It appears that 10824this 10825problem could occur during the resolution of forward references to 10826namespace 10827objects. 10828 10829Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 10830corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 10831allows the deadlock detection debug code to be compiled out in the normal 10832case, improving mutex performance (and overall subsystem performance) 10833considerably. 10834 10835Implemented a handful of miscellaneous fixes for possible memory leaks on 10836error conditions and error handling control paths. These fixes were 10837suggested by FreeBSD and the Coverity Prevent source code analysis tool. 10838 10839Added a check for a null RSDT pointer in AcpiGetFirmwareTable 10840(tbxfroot.c) 10841to prevent a fault in this error case. 10842 10843Code and Data Size: Current and previous core subsystem library sizes are 10844shown below. These are the code and data sizes for the acpica.lib 10845produced 10846by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10847any ACPI driver or OSPM code. The debug version of the code includes the 10848debug output trace mechanism and has a much larger code and data size. 10849Note 10850that these values will vary depending on the efficiency of the compiler 10851and 10852the compiler options used during generation. 10853 10854 Previous Release: 10855 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10856 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10857 Current Release: 10858 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10859 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10860 10861 108622) iASL Compiler/Disassembler: 10863 10864Implemented support to allow Type 1 and Type 2 ASL operators to appear at 10865the module level (not within a control method.) These operators will be 10866executed once at the time the table is loaded. This type of code was 10867legal 10868up until the release of ACPI 2.0B (2002) and is now supported by the iASL 10869compiler in order to provide backwards compatibility with earlier BIOS 10870ASL 10871code. 10872 10873The ACPI integer width (specified via the table revision ID or the -r 10874override, 32 or 64 bits) is now used internally during compile-time 10875constant 10876folding to ensure that constants are truncated to 32 bits if necessary. 10877Previously, the revision ID value was only emitted in the AML table 10878header. 10879 10880An error message is now generated for the Mutex and Method operators if 10881the 10882SyncLevel parameter is outside the legal range of 0 through 15. 10883 10884Fixed a problem with the Method operator ParameterTypes list handling 10885(ACPI 108863.0). Previously, more than 2 types or 2 arguments generated a syntax 10887error. 10888The actual underlying implementation of method argument typechecking is 10889still under development, however. 10890 10891---------------------------------------- 1089213 May 2005. Summary of changes for version 20050513: 10893 108941) ACPI CA Core Subsystem: 10895 10896Implemented support for PCI Express root bridges -- added support for 10897device 10898PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 10899 10900The interpreter now automatically truncates incoming 64-bit constants to 1090132 10902bits if currently executing out of a 32-bit ACPI table (Revision < 2). 10903This 10904also affects the iASL compiler constant folding. (Note: as per below, the 10905iASL compiler no longer allows 64-bit constants within 32-bit tables.) 10906 10907Fixed a problem where string and buffer objects with "static" pointers 10908(pointers to initialization data within an ACPI table) were not handled 10909consistently. The internal object copy operation now always copies the 10910data 10911to a newly allocated buffer, regardless of whether the source object is 10912static or not. 10913 10914Fixed a problem with the FromBCD operator where an implicit result 10915conversion was improperly performed while storing the result to the 10916target 10917operand. Since this is an "explicit conversion" operator, the implicit 10918conversion should never be performed on the output. 10919 10920Fixed a problem with the CopyObject operator where a copy to an existing 10921named object did not always completely overwrite the existing object 10922stored 10923at name. Specifically, a buffer-to-buffer copy did not delete the 10924existing 10925buffer. 10926 10927Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 10928and 10929structs for consistency. 10930 10931Code and Data Size: Current and previous core subsystem library sizes are 10932shown below. These are the code and data sizes for the acpica.lib 10933produced 10934by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10935any ACPI driver or OSPM code. The debug version of the code includes the 10936debug output trace mechanism and has a much larger code and data size. 10937Note 10938that these values will vary depending on the efficiency of the compiler 10939and 10940the compiler options used during generation. 10941 10942 Previous Release: 10943 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10944 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10945 Current Release: (Same sizes) 10946 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10947 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10948 10949 109502) iASL Compiler/Disassembler: 10951 10952The compiler now emits a warning if an attempt is made to generate a 64- 10953bit 10954integer constant from within a 32-bit ACPI table (Revision < 2). The 10955integer 10956is truncated to 32 bits. 10957 10958Fixed a problem with large package objects: if the static length of the 10959package is greater than 255, the "variable length package" opcode is 10960emitted. Previously, this caused an error. This requires an update to the 10961ACPI spec, since it currently (incorrectly) states that packages larger 10962than 10963255 elements are not allowed. 10964 10965The disassembler now correctly handles variable length packages and 10966packages 10967larger than 255 elements. 10968 10969---------------------------------------- 1097008 April 2005. Summary of changes for version 20050408: 10971 109721) ACPI CA Core Subsystem: 10973 10974Fixed three cases in the interpreter where an "index" argument to an ASL 10975function was still (internally) 32 bits instead of the required 64 bits. 10976This was the Index argument to the Index, Mid, and Match operators. 10977 10978The "strupr" function is now permanently local (AcpiUtStrupr), since this 10979is 10980not a POSIX-defined function and not present in most kernel-level C 10981libraries. All references to the C library strupr function have been 10982removed 10983from the headers. 10984 10985Completed the deployment of static functions/prototypes. All prototypes 10986with 10987the static attribute have been moved from the headers to the owning C 10988file. 10989 10990Implemented an extract option (-e) for the AcpiBin utility (AML binary 10991utility). This option allows the utility to extract individual ACPI 10992tables 10993from the output of AcpiDmp. It provides the same functionality of the 10994acpixtract.pl perl script without the worry of setting the correct perl 10995options. AcpiBin runs on Windows and has not yet been generated/validated 10996in 10997the Linux/Unix environment (but should be soon). 10998 10999Updated and fixed the table dump option for AcpiBin (-d). This option 11000converts a single ACPI table to a hex/ascii file, similar to the output 11001of 11002AcpiDmp. 11003 11004Code and Data Size: Current and previous core subsystem library sizes are 11005shown below. These are the code and data sizes for the acpica.lib 11006produced 11007by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11008any ACPI driver or OSPM code. The debug version of the code includes the 11009debug output trace mechanism and has a much larger code and data size. 11010Note 11011that these values will vary depending on the efficiency of the compiler 11012and 11013the compiler options used during generation. 11014 11015 Previous Release: 11016 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11017 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11018 Current Release: 11019 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 11020 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 11021 11022 110232) iASL Compiler/Disassembler: 11024 11025Disassembler fix: Added a check to ensure that the table length found in 11026the 11027ACPI table header within the input file is not longer than the actual 11028input 11029file size. This indicates some kind of file or table corruption. 11030 11031---------------------------------------- 1103229 March 2005. Summary of changes for version 20050329: 11033 110341) ACPI CA Core Subsystem: 11035 11036An error is now generated if an attempt is made to create a Buffer Field 11037of 11038length zero (A CreateField with a length operand of zero.) 11039 11040The interpreter now issues a warning whenever executable code at the 11041module 11042level is detected during ACPI table load. This will give some idea of the 11043prevalence of this type of code. 11044 11045Implemented support for references to named objects (other than control 11046methods) within package objects. 11047 11048Enhanced package object output for the debug object. Package objects are 11049now 11050completely dumped, showing all elements. 11051 11052Enhanced miscellaneous object output for the debug object. Any object can 11053now be written to the debug object (for example, a device object can be 11054written, and the type of the object will be displayed.) 11055 11056The "static" qualifier has been added to all local functions across both 11057the 11058core subsystem and the iASL compiler. 11059 11060The number of "long" lines (> 80 chars) within the source has been 11061significantly reduced, by about 1/3. 11062 11063Cleaned up all header files to ensure that all CA/iASL functions are 11064prototyped (even static functions) and the formatting is consistent. 11065 11066Two new header files have been added, acopcode.h and acnames.h. 11067 11068Removed several obsolete functions that were no longer used. 11069 11070Code and Data Size: Current and previous core subsystem library sizes are 11071shown below. These are the code and data sizes for the acpica.lib 11072produced 11073by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11074any ACPI driver or OSPM code. The debug version of the code includes the 11075debug output trace mechanism and has a much larger code and data size. 11076Note 11077that these values will vary depending on the efficiency of the compiler 11078and 11079the compiler options used during generation. 11080 11081 Previous Release: 11082 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11083 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11084 Current Release: 11085 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 11086 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 11087 11088 11089 110902) iASL Compiler/Disassembler: 11091 11092Fixed a problem with the resource descriptor generation/support. For the 11093ResourceSourceIndex and the ResourceSource fields, both must be present, 11094or 11095both must be not present - can't have one without the other. 11096 11097The compiler now returns non-zero from the main procedure if any errors 11098have 11099occurred during the compilation. 11100 11101 11102---------------------------------------- 1110309 March 2005. Summary of changes for version 20050309: 11104 111051) ACPI CA Core Subsystem: 11106 11107The string-to-buffer implicit conversion code has been modified again 11108after 11109a change to the ACPI specification. In order to match the behavior of 11110the 11111other major ACPI implementation, the target buffer is no longer truncated 11112if 11113the source string is smaller than an existing target buffer. This change 11114requires an update to the ACPI spec, and should eliminate the recent 11115AE_AML_BUFFER_LIMIT issues. 11116 11117The "implicit return" support was rewritten to a new algorithm that 11118solves 11119the general case. Rather than attempt to determine when a method is about 11120to 11121exit, the result of every ASL operator is saved momentarily until the 11122very 11123next ASL operator is executed. Therefore, no matter how the method exits, 11124there will always be a saved implicit return value. This feature is only 11125enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 11126eliminate 11127AE_AML_NO_RETURN_VALUE errors when enabled. 11128 11129Implemented implicit conversion support for the predicate (operand) of 11130the 11131If, Else, and While operators. String and Buffer arguments are 11132automatically 11133converted to Integers. 11134 11135Changed the string-to-integer conversion behavior to match the new ACPI 11136errata: "If no integer object exists, a new integer is created. The ASCII 11137string is interpreted as a hexadecimal constant. Each string character is 11138interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 11139with the first character as the most significant digit, and ending with 11140the 11141first non-hexadecimal character or end-of-string." This means that the 11142first 11143non-hex character terminates the conversion and this is the code that was 11144changed. 11145 11146Fixed a problem where the ObjectType operator would fail (fault) when 11147used 11148on an Index of a Package which pointed to a null package element. The 11149operator now properly returns zero (Uninitialized) in this case. 11150 11151Fixed a problem where the While operator used excessive memory by not 11152properly popping the result stack during execution. There was no memory 11153leak 11154after execution, however. (Code provided by Valery Podrezov.) 11155 11156Fixed a problem where references to control methods within Package 11157objects 11158caused the method to be invoked, instead of producing a reference object 11159pointing to the method. 11160 11161Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 11162to 11163improve performance and reduce code size. (Code provided by Alexey 11164Starikovskiy.) 11165 11166Code and Data Size: Current and previous core subsystem library sizes are 11167shown below. These are the code and data sizes for the acpica.lib 11168produced 11169by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11170any ACPI driver or OSPM code. The debug version of the code includes the 11171debug output trace mechanism and has a much larger code and data size. 11172Note 11173that these values will vary depending on the efficiency of the compiler 11174and 11175the compiler options used during generation. 11176 11177 Previous Release: 11178 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11179 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11180 Current Release: 11181 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11182 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 11183 11184 111852) iASL Compiler/Disassembler: 11186 11187Fixed a problem with the Return operator with no arguments. Since the AML 11188grammar for the byte encoding requires an operand for the Return opcode, 11189the 11190compiler now emits a Return(Zero) for this case. An ACPI specification 11191update has been written for this case. 11192 11193For tables other than the DSDT, namepath optimization is automatically 11194disabled. This is because SSDTs can be loaded anywhere in the namespace, 11195the 11196compiler has no knowledge of where, and thus cannot optimize namepaths. 11197 11198Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 11199inadvertently omitted from the ACPI specification, and will require an 11200update to the spec. 11201 11202The source file scan for ASCII characters is now optional (-a). This 11203change 11204was made because some vendors place non-ascii characters within comments. 11205However, the scan is simply a brute-force byte compare to ensure all 11206characters in the file are in the range 0x00 to 0x7F. 11207 11208Fixed a problem with the CondRefOf operator where the compiler was 11209inappropriately checking for the existence of the target. Since the point 11210of 11211the operator is to check for the existence of the target at run-time, the 11212compiler no longer checks for the target existence. 11213 11214Fixed a problem where errors generated from the internal AML interpreter 11215during constant folding were not handled properly, causing a fault. 11216 11217Fixed a problem with overly aggressive range checking for the Stall 11218operator. The valid range (max 255) is now only checked if the operand is 11219of 11220type Integer. All other operand types cannot be statically checked. 11221 11222Fixed a problem where control method references within the RefOf, 11223DeRefOf, 11224and ObjectType operators were not treated properly. They are now treated 11225as 11226actual references, not method invocations. 11227 11228Fixed and enhanced the "list namespace" option (-ln). This option was 11229broken 11230a number of releases ago. 11231 11232Improved error handling for the Field, IndexField, and BankField 11233operators. 11234The compiler now cleanly reports and recovers from errors in the field 11235component (FieldUnit) list. 11236 11237Fixed a disassembler problem where the optional ResourceDescriptor fields 11238TRS and TTP were not always handled correctly. 11239 11240Disassembler - Comments in output now use "//" instead of "/*" 11241 11242---------------------------------------- 1124328 February 2005. Summary of changes for version 20050228: 11244 112451) ACPI CA Core Subsystem: 11246 11247Fixed a problem where the result of an Index() operator (an object 11248reference) must increment the reference count on the target object for 11249the 11250life of the object reference. 11251 11252Implemented AML Interpreter and Debugger support for the new ACPI 3.0 11253Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 11254WordSpace 11255resource descriptors. 11256 11257Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 11258Space Descriptor" string, indicating interpreter support for the 11259descriptors 11260above. 11261 11262Implemented header support for the new ACPI 3.0 FADT flag bits. 11263 11264Implemented header support for the new ACPI 3.0 PCI Express bits for the 11265PM1 11266status/enable registers. 11267 11268Updated header support for the MADT processor local Apic struct and MADT 11269platform interrupt source struct for new ACPI 3.0 fields. 11270 11271Implemented header support for the SRAT and SLIT ACPI tables. 11272 11273Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 11274flag 11275at runtime. 11276 11277Code and Data Size: Current and previous core subsystem library sizes are 11278shown below. These are the code and data sizes for the acpica.lib 11279produced 11280by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11281any ACPI driver or OSPM code. The debug version of the code includes the 11282debug output trace mechanism and has a much larger code and data size. 11283Note 11284that these values will vary depending on the efficiency of the compiler 11285and 11286the compiler options used during generation. 11287 11288 Previous Release: 11289 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11290 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11291 Current Release: 11292 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11293 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 11294 11295 112962) iASL Compiler/Disassembler: 11297 11298Fixed a problem with the internal 64-bit String-to-integer conversion 11299with 11300strings less than two characters long. 11301 11302Fixed a problem with constant folding where the result of the Index() 11303operator can not be considered a constant. This means that Index() cannot 11304be 11305a type3 opcode and this will require an update to the ACPI specification. 11306 11307Disassembler: Implemented support for the TTP, MTP, and TRS resource 11308descriptor fields. These fields were inadvertently ignored and not output 11309in 11310the disassembly of the resource descriptor. 11311 11312 11313 ---------------------------------------- 1131411 February 2005. Summary of changes for version 20050211: 11315 113161) ACPI CA Core Subsystem: 11317 11318Implemented ACPI 3.0 support for implicit conversion within the Match() 11319operator. MatchObjects can now be of type integer, buffer, or string 11320instead 11321of just type integer. Package elements are implicitly converted to the 11322type 11323of the MatchObject. This change aligns the behavior of Match() with the 11324behavior of the other logical operators (LLess(), etc.) It also requires 11325an 11326errata change to the ACPI specification as this support was intended for 11327ACPI 3.0, but was inadvertently omitted. 11328 11329Fixed a problem with the internal implicit "to buffer" conversion. 11330Strings 11331that are converted to buffers will cause buffer truncation if the string 11332is 11333smaller than the target buffer. Integers that are converted to buffers 11334will 11335not cause buffer truncation, only zero extension (both as per the ACPI 11336spec.) The problem was introduced when code was added to truncate the 11337buffer, but this should not be performed in all cases, only the string 11338case. 11339 11340Fixed a problem with the Buffer and Package operators where the 11341interpreter 11342would get confused if two such operators were used as operands to an ASL 11343operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 11344stack was not being popped after the execution of these operators, 11345resulting 11346in an AE_NO_RETURN_VALUE exception. 11347 11348Fixed a problem with constructs of the form Store(Index(...),...). The 11349reference object returned from Index was inadvertently resolved to an 11350actual 11351value. This problem was introduced in version 20050114 when the behavior 11352of 11353Store() was modified to restrict the object types that can be used as the 11354source operand (to match the ACPI specification.) 11355 11356Reduced excessive stack use within the AcpiGetObjectInfo procedure. 11357 11358Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 11359 11360Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 11361 11362Code and Data Size: Current and previous core subsystem library sizes are 11363shown below. These are the code and data sizes for the acpica.lib 11364produced 11365by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11366any ACPI driver or OSPM code. The debug version of the code includes the 11367debug output trace mechanism and has a much larger code and data size. 11368Note 11369that these values will vary depending on the efficiency of the compiler 11370and 11371the compiler options used during generation. 11372 11373 Previous Release: 11374 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11375 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11376 Current Release: 11377 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 11378 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 11379 11380 113812) iASL Compiler/Disassembler: 11382 11383Fixed a code generation problem in the constant folding optimization code 11384where incorrect code was generated if a constant was reduced to a buffer 11385object (i.e., a reduced type 5 opcode.) 11386 11387Fixed a typechecking problem for the ToBuffer operator. Caused by an 11388incorrect return type in the internal opcode information table. 11389 11390---------------------------------------- 1139125 January 2005. Summary of changes for version 20050125: 11392 113931) ACPI CA Core Subsystem: 11394 11395Fixed a recently introduced problem with the Global Lock where the 11396underlying semaphore was not created. This problem was introduced in 11397version 20050114, and caused an AE_AML_NO_OPERAND exception during an 11398Acquire() operation on _GL. 11399 11400The local object cache is now optional, and is disabled by default. Both 11401AcpiExec and the iASL compiler enable the cache because they run in user 11402mode and this enhances their performance. #define 11403ACPI_ENABLE_OBJECT_CACHE 11404to enable the local cache. 11405 11406Fixed an issue in the internal function AcpiUtEvaluateObject concerning 11407the 11408optional "implicit return" support where an error was returned if no 11409return 11410object was expected, but one was implicitly returned. AE_OK is now 11411returned 11412in this case and the implicitly returned object is deleted. 11413AcpiUtEvaluateObject is only occasionally used, and only to execute 11414reserved 11415methods such as _STA and _INI where the return type is known up front. 11416 11417Fixed a few issues with the internal convert-to-integer code. It now 11418returns 11419an error if an attempt is made to convert a null string, a string of only 11420blanks/tabs, or a zero-length buffer. This affects both implicit 11421conversion 11422and explicit conversion via the ToInteger() operator. 11423 11424The internal debug code in AcpiUtAcquireMutex has been commented out. It 11425is 11426not needed for normal operation and should increase the performance of 11427the 11428entire subsystem. The code remains in case it is needed for debug 11429purposes 11430again. 11431 11432The AcpiExec source and makefile are included in the Unix/Linux package 11433for 11434the first time. 11435 11436Code and Data Size: Current and previous core subsystem library sizes are 11437shown below. These are the code and data sizes for the acpica.lib 11438produced 11439by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11440any ACPI driver or OSPM code. The debug version of the code includes the 11441debug output trace mechanism and has a much larger code and data size. 11442Note 11443that these values will vary depending on the efficiency of the compiler 11444and 11445the compiler options used during generation. 11446 11447 Previous Release: 11448 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11449 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11450 Current Release: 11451 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 11452 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 11453 114542) iASL Compiler/Disassembler: 11455 11456Switch/Case support: A warning is now issued if the type of the Switch 11457value 11458cannot be determined at compile time. For example, Switch(Arg0) will 11459generate the warning, and the type is assumed to be an integer. As per 11460the 11461ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 11462the 11463warning. 11464 11465Switch/Case support: Implemented support for buffer and string objects as 11466the switch value. This is an ACPI 3.0 feature, now that LEqual supports 11467buffers and strings. 11468 11469Switch/Case support: The emitted code for the LEqual() comparisons now 11470uses 11471the switch value as the first operand, not the second. The case value is 11472now 11473the second operand, and this allows the case value to be implicitly 11474converted to the type of the switch value, not the other way around. 11475 11476Switch/Case support: Temporary variables are now emitted immediately 11477within 11478the control method, not at the global level. This means that there are 11479now 1148036 temps available per-method, not 36 temps per-module as was the case 11481with 11482the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 11483 11484---------------------------------------- 1148514 January 2005. Summary of changes for version 20050114: 11486 11487Added 2005 copyright to all module headers. This affects every module in 11488the core subsystem, iASL compiler, and the utilities. 11489 114901) ACPI CA Core Subsystem: 11491 11492Fixed an issue with the String-to-Buffer conversion code where the string 11493null terminator was not included in the buffer after conversion, but 11494there 11495is existing ASL that assumes the string null terminator is included. This 11496is 11497the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 11498introduced in the previous version when the code was updated to correctly 11499set the converted buffer size as per the ACPI specification. The ACPI 11500spec 11501is ambiguous and will be updated to specify that the null terminator must 11502be 11503included in the converted buffer. This also affects the ToBuffer() ASL 11504operator. 11505 11506Fixed a problem with the Mid() ASL/AML operator where it did not work 11507correctly on Buffer objects. Newly created sub-buffers were not being 11508marked 11509as initialized. 11510 11511 11512Fixed a problem in AcpiTbFindTable where incorrect string compares were 11513performed on the OemId and OemTableId table header fields. These fields 11514are 11515not null terminated, so strncmp is now used instead of strcmp. 11516 11517Implemented a restriction on the Store() ASL/AML operator to align the 11518behavior with the ACPI specification. Previously, any object could be 11519used 11520as the source operand. Now, the only objects that may be used are 11521Integers, 11522Buffers, Strings, Packages, Object References, and DDB Handles. If 11523necessary, the original behavior can be restored by enabling the 11524EnableInterpreterSlack flag. 11525 11526Enhanced the optional "implicit return" support to allow an implicit 11527return 11528value from methods that are invoked externally via the AcpiEvaluateObject 11529interface. This enables implicit returns from the _STA and _INI methods, 11530for example. 11531 11532Changed the Revision() ASL/AML operator to return the current version of 11533the 11534AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 11535returned 11536the supported ACPI version (This is the function of the _REV method). 11537 11538Updated the _REV predefined method to return the currently supported 11539version 11540of ACPI, now 3. 11541 11542Implemented batch mode option for the AcpiExec utility (-b). 11543 11544Code and Data Size: Current and previous core subsystem library sizes are 11545shown below. These are the code and data sizes for the acpica.lib 11546produced 11547by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11548any ACPI driver or OSPM code. The debug version of the code includes the 11549debug output trace mechanism and has a much larger code and data size. 11550Note 11551that these values will vary depending on the efficiency of the compiler 11552and 11553the compiler options used during generation. 11554 11555 Previous Release: 11556 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11557 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11558 Current Release: 11559 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 11560 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 11561 11562---------------------------------------- 1156310 December 2004. Summary of changes for version 20041210: 11564 11565ACPI 3.0 support is nearing completion in both the iASL compiler and the 11566ACPI CA core subsystem. 11567 115681) ACPI CA Core Subsystem: 11569 11570Fixed a problem in the ToDecimalString operator where the resulting 11571string 11572length was incorrectly calculated. The length is now calculated exactly, 11573eliminating incorrect AE_STRING_LIMIT exceptions. 11574 11575Fixed a problem in the ToHexString operator to allow a maximum 200 11576character 11577string to be produced. 11578 11579Fixed a problem in the internal string-to-buffer and buffer-to-buffer 11580copy 11581routine where the length of the resulting buffer was not truncated to the 11582new size (if the target buffer already existed). 11583 11584Code and Data Size: Current and previous core subsystem library sizes are 11585shown below. These are the code and data sizes for the acpica.lib 11586produced 11587by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11588any ACPI driver or OSPM code. The debug version of the code includes the 11589debug output trace mechanism and has a much larger code and data size. 11590Note 11591that these values will vary depending on the efficiency of the compiler 11592and 11593the compiler options used during generation. 11594 11595 Previous Release: 11596 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11597 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11598 Current Release: 11599 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11600 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 11601 11602 116032) iASL Compiler/Disassembler: 11604 11605Implemented the new ACPI 3.0 resource template macros - DWordSpace, 11606ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 11607Includes support in the disassembler. 11608 11609Implemented support for the new (ACPI 3.0) parameter to the Register 11610macro, 11611AccessSize. 11612 11613Fixed a problem where the _HE resource name for the Interrupt macro was 11614referencing bit 0 instead of bit 1. 11615 11616Implemented check for maximum 255 interrupts in the Interrupt macro. 11617 11618Fixed a problem with the predefined resource descriptor names where 11619incorrect AML code was generated if the offset within the resource buffer 11620was 0 or 1. The optimizer shortened the AML code to a single byte opcode 11621but did not update the surrounding package lengths. 11622 11623Changes to the Dma macro: All channels within the channel list must be 11624in 11625the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 11626optional (default is BusMaster). 11627 11628Implemented check for maximum 7 data bytes for the VendorShort macro. 11629 11630The ReadWrite parameter is now optional for the Memory32 and similar 11631macros. 11632 11633---------------------------------------- 1163403 December 2004. Summary of changes for version 20041203: 11635 116361) ACPI CA Core Subsystem: 11637 11638The low-level field insertion/extraction code (exfldio) has been 11639completely 11640rewritten to eliminate unnecessary complexity, bugs, and boundary 11641conditions. 11642 11643Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 11644ToDecimalString 11645operators where the input operand could be inadvertently deleted if no 11646conversion was necessary (e.g., if the input to ToInteger was an Integer 11647object.) 11648 11649Fixed a problem with the ToDecimalString and ToHexString where an 11650incorrect 11651exception code was returned if the resulting string would be > 200 chars. 11652AE_STRING_LIMIT is now returned. 11653 11654Fixed a problem with the Concatenate operator where AE_OK was always 11655returned, even if the operation failed. 11656 11657Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 11658semaphores to be allocated. 11659 11660Code and Data Size: Current and previous core subsystem library sizes are 11661shown below. These are the code and data sizes for the acpica.lib 11662produced 11663by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11664any ACPI driver or OSPM code. The debug version of the code includes the 11665debug output trace mechanism and has a much larger code and data size. 11666Note 11667that these values will vary depending on the efficiency of the compiler 11668and 11669the compiler options used during generation. 11670 11671 Previous Release: 11672 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11673 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11674 Current Release: 11675 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 11676 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 11677 11678 116792) iASL Compiler/Disassembler: 11680 11681Fixed typechecking for the ObjectType and SizeOf operators. Problem was 11682recently introduced in 20041119. 11683 11684Fixed a problem with the ToUUID macro where the upper nybble of each 11685buffer 11686byte was inadvertently set to zero. 11687 11688---------------------------------------- 1168919 November 2004. Summary of changes for version 20041119: 11690 116911) ACPI CA Core Subsystem: 11692 11693Fixed a problem in the internal ConvertToInteger routine where new 11694integers 11695were not truncated to 32 bits for 32-bit ACPI tables. This routine 11696converts 11697buffers and strings to integers. 11698 11699Implemented support to store a value to an Index() on a String object. 11700This 11701is an ACPI 2.0 feature that had not yet been implemented. 11702 11703Implemented new behavior for storing objects to individual package 11704elements 11705(via the Index() operator). The previous behavior was to invoke the 11706implicit 11707conversion rules if an object was already present at the index. The new 11708behavior is to simply delete any existing object and directly store the 11709new 11710object. Although the ACPI specification seems unclear on this subject, 11711other 11712ACPI implementations behave in this manner. (This is the root of the 11713AE_BAD_HEX_CONSTANT issue.) 11714 11715Modified the RSDP memory scan mechanism to support the extended checksum 11716for 11717ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 11718RSDP signature is found with a valid checksum. 11719 11720Code and Data Size: Current and previous core subsystem library sizes are 11721shown below. These are the code and data sizes for the acpica.lib 11722produced 11723by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11724any ACPI driver or OSPM code. The debug version of the code includes the 11725debug output trace mechanism and has a much larger code and data size. 11726Note 11727that these values will vary depending on the efficiency of the compiler 11728and 11729the compiler options used during generation. 11730 11731 Previous Release: 11732 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11733 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11734 Current Release: 11735 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11736 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11737 11738 117392) iASL Compiler/Disassembler: 11740 11741Fixed a missing semicolon in the aslcompiler.y file. 11742 11743---------------------------------------- 1174405 November 2004. Summary of changes for version 20041105: 11745 117461) ACPI CA Core Subsystem: 11747 11748Implemented support for FADT revision 2. This was an interim table 11749(between 11750ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 11751 11752Implemented optional support to allow uninitialized LocalX and ArgX 11753variables in a control method. The variables are initialized to an 11754Integer 11755object with a value of zero. This support is enabled by setting the 11756AcpiGbl_EnableInterpreterSlack flag to TRUE. 11757 11758Implemented support for Integer objects for the SizeOf operator. Either 117594 11760or 8 is returned, depending on the current integer size (32-bit or 64- 11761bit, 11762depending on the parent table revision). 11763 11764Fixed a problem in the implementation of the SizeOf and ObjectType 11765operators 11766where the operand was resolved to a value too early, causing incorrect 11767return values for some objects. 11768 11769Fixed some possible memory leaks during exceptional conditions. 11770 11771Code and Data Size: Current and previous core subsystem library sizes are 11772shown below. These are the code and data sizes for the acpica.lib 11773produced 11774by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11775any ACPI driver or OSPM code. The debug version of the code includes the 11776debug output trace mechanism and has a much larger code and data size. 11777Note 11778that these values will vary depending on the efficiency of the compiler 11779and 11780the compiler options used during generation. 11781 11782 Previous Release: 11783 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11784 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11785 Current Release: 11786 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 11787 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 11788 11789 117902) iASL Compiler/Disassembler: 11791 11792Implemented support for all ACPI 3.0 reserved names and methods. 11793 11794Implemented all ACPI 3.0 grammar elements in the front-end, including 11795support for semicolons. 11796 11797Implemented the ACPI 3.0 Function() and ToUUID() macros 11798 11799Fixed a problem in the disassembler where a Scope() operator would not be 11800emitted properly if the target of the scope was in another table. 11801 11802---------------------------------------- 1180315 October 2004. Summary of changes for version 20041015: 11804 11805Note: ACPI CA is currently undergoing an in-depth and complete formal 11806evaluation to test/verify the following areas. Other suggestions are 11807welcome. This will result in an increase in the frequency of releases and 11808the number of bug fixes in the next few months. 11809 - Functional tests for all ASL/AML operators 11810 - All implicit/explicit type conversions 11811 - Bit fields and operation regions 11812 - 64-bit math support and 32-bit-only "truncated" math support 11813 - Exceptional conditions, both compiler and interpreter 11814 - Dynamic object deletion and memory leaks 11815 - ACPI 3.0 support when implemented 11816 - External interfaces to the ACPI subsystem 11817 11818 118191) ACPI CA Core Subsystem: 11820 11821Fixed two alignment issues on 64-bit platforms - within debug statements 11822in 11823AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 11824Address 11825field within the non-aligned ACPI generic address structure. 11826 11827Fixed a problem in the Increment and Decrement operators where incorrect 11828operand resolution could result in the inadvertent modification of the 11829original integer when the integer is passed into another method as an 11830argument and the arg is then incremented/decremented. 11831 11832Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 11833bit 11834BCD number were truncated during conversion. 11835 11836Fixed a problem in the ToDecimal operator where the length of the 11837resulting 11838string could be set incorrectly too long if the input operand was a 11839Buffer 11840object. 11841 11842Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 11843(0) 11844within a buffer would prematurely terminate a compare between buffer 11845objects. 11846 11847Added a check for string overflow (>200 characters as per the ACPI 11848specification) during the Concatenate operator with two string operands. 11849 11850Code and Data Size: Current and previous core subsystem library sizes are 11851shown below. These are the code and data sizes for the acpica.lib 11852produced 11853by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11854any ACPI driver or OSPM code. The debug version of the code includes the 11855debug output trace mechanism and has a much larger code and data size. 11856Note 11857that these values will vary depending on the efficiency of the compiler 11858and 11859the compiler options used during generation. 11860 11861 Previous Release: 11862 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11863 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11864 Current Release: 11865 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11866 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11867 11868 11869 118702) iASL Compiler/Disassembler: 11871 11872Allow the use of the ObjectType operator on uninitialized Locals and Args 11873(returns 0 as per the ACPI specification). 11874 11875Fixed a problem where the compiler would fault if there was a syntax 11876error 11877in the FieldName of all of the various CreateXXXField operators. 11878 11879Disallow the use of lower case letters within the EISAID macro, as per 11880the 11881ACPI specification. All EISAID strings must be of the form "UUUNNNN" 11882Where 11883U is an uppercase letter and N is a hex digit. 11884 11885 11886---------------------------------------- 1188706 October 2004. Summary of changes for version 20041006: 11888 118891) ACPI CA Core Subsystem: 11890 11891Implemented support for the ACPI 3.0 Timer operator. This ASL function 11892implements a 64-bit timer with 100 nanosecond granularity. 11893 11894Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 11895implement the ACPI 3.0 Timer operator. This allows the host OS to 11896implement 11897the timer with the best clock available. Also, it keeps the core 11898subsystem 11899out of the clock handling business, since the host OS (usually) performs 11900this function. 11901 11902Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 11903functions use a 64-bit address which is part of the packed ACPI Generic 11904Address Structure. Since the structure is non-aligned, the alignment 11905macros 11906are now used to extract the address to a local variable before use. 11907 11908Fixed a problem where the ToInteger operator assumed all input strings 11909were 11910hexadecimal. The operator now handles both decimal strings and hex 11911strings 11912(prefixed with "0x"). 11913 11914Fixed a problem where the string length in the string object created as a 11915result of the internal ConvertToString procedure could be incorrect. This 11916potentially affected all implicit conversions and also the 11917ToDecimalString 11918and ToHexString operators. 11919 11920Fixed two problems in the ToString operator. If the length parameter was 11921zero, an incorrect string object was created and the value of the input 11922length parameter was inadvertently changed from zero to Ones. 11923 11924Fixed a problem where the optional ResourceSource string in the 11925ExtendedIRQ 11926resource macro was ignored. 11927 11928Simplified the interfaces to the internal division functions, reducing 11929code 11930size and complexity. 11931 11932Code and Data Size: Current and previous core subsystem library sizes are 11933shown below. These are the code and data sizes for the acpica.lib 11934produced 11935by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11936any ACPI driver or OSPM code. The debug version of the code includes the 11937debug output trace mechanism and has a much larger code and data size. 11938Note 11939that these values will vary depending on the efficiency of the compiler 11940and 11941the compiler options used during generation. 11942 11943 Previous Release: 11944 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11945 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11946 Current Release: 11947 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11948 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11949 11950 119512) iASL Compiler/Disassembler: 11952 11953Implemented support for the ACPI 3.0 Timer operator. 11954 11955Fixed a problem where the Default() operator was inadvertently ignored in 11956a 11957Switch/Case block. This was a problem in the translation of the Switch 11958statement to If...Else pairs. 11959 11960Added support to allow a standalone Return operator, with no parentheses 11961(or 11962operands). 11963 11964Fixed a problem with code generation for the ElseIf operator where the 11965translated Else...If parse tree was improperly constructed leading to the 11966loss of some code. 11967 11968---------------------------------------- 1196922 September 2004. Summary of changes for version 20040922: 11970 119711) ACPI CA Core Subsystem: 11972 11973Fixed a problem with the implementation of the LNot() operator where 11974"Ones" 11975was not returned for the TRUE case. Changed the code to return Ones 11976instead 11977of (!Arg) which was usually 1. This change affects iASL constant folding 11978for 11979this operator also. 11980 11981Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 11982not 11983initialized properly -- Now zero the entire buffer in this case where the 11984buffer already exists. 11985 11986Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 11987Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 11988related code considerably. This will require changes/updates to all OS 11989interface layers (OSLs.) 11990 11991Implemented a new external interface, AcpiInstallExceptionHandler, to 11992allow 11993a system exception handler to be installed. This handler is invoked upon 11994any 11995run-time exception that occurs during control method execution. 11996 11997Added support for the DSDT in AcpiTbFindTable. This allows the 11998DataTableRegion() operator to access the local copy of the DSDT. 11999 12000Code and Data Size: Current and previous core subsystem library sizes are 12001shown below. These are the code and data sizes for the acpica.lib 12002produced 12003by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12004any ACPI driver or OSPM code. The debug version of the code includes the 12005debug output trace mechanism and has a much larger code and data size. 12006Note 12007that these values will vary depending on the efficiency of the compiler 12008and 12009the compiler options used during generation. 12010 12011 Previous Release: 12012 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12013 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12014 Current Release: 12015 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 12016 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 12017 12018 120192) iASL Compiler/Disassembler: 12020 12021Fixed a problem with constant folding and the LNot operator. LNot was 12022returning 1 in the TRUE case, not Ones as per the ACPI specification. 12023This 12024could result in the generation of an incorrect folded/reduced constant. 12025 12026End-Of-File is now allowed within a "//"-style comment. A parse error no 12027longer occurs if such a comment is at the very end of the input ASL 12028source 12029file. 12030 12031Implemented the "-r" option to override the Revision in the table header. 12032The initial use of this option will be to simplify the evaluation of the 12033AML 12034interpreter by allowing a single ASL source module to be compiled for 12035either 1203632-bit or 64-bit integers. 12037 12038 12039---------------------------------------- 1204027 August 2004. Summary of changes for version 20040827: 12041 120421) ACPI CA Core Subsystem: 12043 12044- Implemented support for implicit object conversion in the non-numeric 12045logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 12046and 12047LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 12048the second operand is implicitly converted on the fly to match the type 12049of 12050the first operand. For example: 12051 12052 LEqual (Source1, Source2) 12053 12054Source1 and Source2 must each evaluate to an integer, a string, or a 12055buffer. 12056The data type of Source1 dictates the required type of Source2. Source2 12057is 12058implicitly converted if necessary to match the type of Source1. 12059 12060- Updated and corrected the behavior of the string conversion support. 12061The 12062rules concerning conversion of buffers to strings (according to the ACPI 12063specification) are as follows: 12064 12065ToDecimalString - explicit byte-wise conversion of buffer to string of 12066decimal values (0-255) separated by commas. ToHexString - explicit byte- 12067wise 12068conversion of buffer to string of hex values (0-FF) separated by commas. 12069ToString - explicit byte-wise conversion of buffer to string. Byte-by- 12070byte 12071copy with no transform except NULL terminated. Any other implicit buffer- 12072to- 12073string conversion - byte-wise conversion of buffer to string of hex 12074values 12075(0-FF) separated by spaces. 12076 12077- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 12078 12079- Fixed a problem in AcpiNsGetPathnameLength where the returned length 12080was 12081one byte too short in the case of a node in the root scope. This could 12082cause a fault during debug output. 12083 12084- Code and Data Size: Current and previous core subsystem library sizes 12085are 12086shown below. These are the code and data sizes for the acpica.lib 12087produced 12088by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12089any ACPI driver or OSPM code. The debug version of the code includes the 12090debug output trace mechanism and has a much larger code and data size. 12091Note 12092that these values will vary depending on the efficiency of the compiler 12093and 12094the compiler options used during generation. 12095 12096 Previous Release: 12097 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12098 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12099 Current Release: 12100 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 12101 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 12102 12103 121042) iASL Compiler/Disassembler: 12105 12106- Fixed a Linux generation error. 12107 12108 12109---------------------------------------- 1211016 August 2004. Summary of changes for version 20040816: 12111 121121) ACPI CA Core Subsystem: 12113 12114Designed and implemented support within the AML interpreter for the so- 12115called "implicit return". This support returns the result of the last 12116ASL 12117operation within a control method, in the absence of an explicit Return() 12118operator. A few machines depend on this behavior, even though it is not 12119explicitly supported by the ASL language. It is optional support that 12120can 12121be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 12122 12123Removed support for the PCI_Config address space from the internal low 12124level 12125hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 12126support was not used internally, and would not work correctly anyway 12127because 12128the PCI bus number and segment number were not supported. There are 12129separate interfaces for PCI configuration space access because of the 12130unique 12131interface. 12132 12133Code and Data Size: Current and previous core subsystem library sizes are 12134shown below. These are the code and data sizes for the acpica.lib 12135produced 12136by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12137any ACPI driver or OSPM code. The debug version of the code includes the 12138debug output trace mechanism and has a much larger code and data size. 12139Note 12140that these values will vary depending on the efficiency of the compiler 12141and 12142the compiler options used during generation. 12143 12144 Previous Release: 12145 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12146 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12147 Current Release: 12148 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 12149 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 12150 12151 121522) iASL Compiler/Disassembler: 12153 12154Fixed a problem where constants in ASL expressions at the root level (not 12155within a control method) could be inadvertently truncated during code 12156generation. This problem was introduced in the 20040715 release. 12157 12158 12159---------------------------------------- 1216015 July 2004. Summary of changes for version 20040715: 12161 121621) ACPI CA Core Subsystem: 12163 12164Restructured the internal HW GPE interfaces to pass/track the current 12165state 12166of interrupts (enabled/disabled) in order to avoid possible deadlock and 12167increase flexibility of the interfaces. 12168 12169Implemented a "lexicographical compare" for String and Buffer objects 12170within 12171the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 12172- 12173as per further clarification to the ACPI specification. Behavior is 12174similar 12175to C library "strcmp". 12176 12177Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 12178external function. In the 32-bit non-debug case, the stack use has been 12179reduced from 168 bytes to 32 bytes. 12180 12181Deployed a new run-time configuration flag, 12182AcpiGbl_EnableInterpreterSlack, 12183whose purpose is to allow the AML interpreter to forgive certain bad AML 12184constructs. Default setting is FALSE. 12185 12186Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 12187IO 12188support code. If enabled, it allows field access to go beyond the end of 12189a 12190region definition if the field is within the region length rounded up to 12191the 12192next access width boundary (a common coding error.) 12193 12194Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 12195ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 12196these 12197symbols are lowercased by the latest version of the AcpiSrc tool. 12198 12199The prototypes for the PCI interfaces in acpiosxf.h have been updated to 12200rename "Register" to simply "Reg" to prevent certain compilers from 12201complaining. 12202 12203Code and Data Size: Current and previous core subsystem library sizes are 12204shown below. These are the code and data sizes for the acpica.lib 12205produced 12206by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12207any ACPI driver or OSPM code. The debug version of the code includes the 12208debug output trace mechanism and has a much larger code and data size. 12209Note 12210that these values will vary depending on the efficiency of the compiler 12211and 12212the compiler options used during generation. 12213 12214 Previous Release: 12215 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12216 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12217 Current Release: 12218 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 12219 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 12220 12221 122222) iASL Compiler/Disassembler: 12223 12224Implemented full support for Package objects within the Case() operator. 12225Note: The Break() operator is currently not supported within Case blocks 12226(TermLists) as there is some question about backward compatibility with 12227ACPI 122281.0 interpreters. 12229 12230 12231Fixed a problem where complex terms were not supported properly within 12232the 12233Switch() operator. 12234 12235Eliminated extraneous warning for compiler-emitted reserved names of the 12236form "_T_x". (Used in Switch/Case operators.) 12237 12238Eliminated optimization messages for "_T_x" objects and small constants 12239within the DefinitionBlock operator. 12240 12241 12242---------------------------------------- 1224315 June 2004. Summary of changes for version 20040615: 12244 122451) ACPI CA Core Subsystem: 12246 12247Implemented support for Buffer and String objects (as per ACPI 2.0) for 12248the 12249following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12250LLessEqual. 12251 12252All directory names in the entire source package are lower case, as they 12253were in earlier releases. 12254 12255Implemented "Disassemble" command in the AML debugger that will 12256disassemble 12257a single control method. 12258 12259Code and Data Size: Current and previous core subsystem library sizes are 12260shown below. These are the code and data sizes for the acpica.lib 12261produced 12262by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12263any ACPI driver or OSPM code. The debug version of the code includes the 12264debug output trace mechanism and has a much larger code and data size. 12265Note 12266that these values will vary depending on the efficiency of the compiler 12267and 12268the compiler options used during generation. 12269 12270 Previous Release: 12271 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12272 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12273 12274 Current Release: 12275 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 12276 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 12277 12278 122792) iASL Compiler/Disassembler: 12280 12281Implemented support for Buffer and String objects (as per ACPI 2.0) for 12282the 12283following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 12284LLessEqual. 12285 12286All directory names in the entire source package are lower case, as they 12287were in earlier releases. 12288 12289Fixed a fault when using the -g or -d<nofilename> options if the FADT was 12290not found. 12291 12292Fixed an issue with the Windows version of the compiler where later 12293versions 12294of Windows place the FADT in the registry under the name "FADT" and not 12295"FACP" as earlier versions did. This applies when using the -g or - 12296d<nofilename> options. The compiler now looks for both strings as 12297necessary. 12298 12299Fixed a problem with compiler namepath optimization where a namepath 12300within 12301the Scope() operator could not be optimized if the namepath was a subpath 12302of 12303the current scope path. 12304 12305---------------------------------------- 1230627 May 2004. Summary of changes for version 20040527: 12307 123081) ACPI CA Core Subsystem: 12309 12310Completed a new design and implementation for EBDA (Extended BIOS Data 12311Area) 12312support in the RSDP scan code. The original code improperly scanned for 12313the 12314EBDA by simply scanning from memory location 0 to 0x400. The correct 12315method 12316is to first obtain the EBDA pointer from within the BIOS data area, then 12317scan 1K of memory starting at the EBDA pointer. There appear to be few 12318if 12319any machines that place the RSDP in the EBDA, however. 12320 12321Integrated a fix for a possible fault during evaluation of BufferField 12322arguments. Obsolete code that was causing the problem was removed. 12323 12324Found and fixed a problem in the Field Support Code where data could be 12325corrupted on a bit field read that starts on an aligned boundary but does 12326not end on an aligned boundary. Merged the read/write "datum length" 12327calculation code into a common procedure. 12328 12329Rolled in a couple of changes to the FreeBSD-specific header. 12330 12331 12332Code and Data Size: Current and previous core subsystem library sizes are 12333shown below. These are the code and data sizes for the acpica.lib 12334produced 12335by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12336any ACPI driver or OSPM code. The debug version of the code includes the 12337debug output trace mechanism and has a much larger code and data size. 12338Note 12339that these values will vary depending on the efficiency of the compiler 12340and 12341the compiler options used during generation. 12342 12343 Previous Release: 12344 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12345 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12346 Current Release: 12347 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 12348 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 12349 12350 123512) iASL Compiler/Disassembler: 12352 12353Fixed a generation warning produced by some overly-verbose compilers for 12354a 1235564-bit constant. 12356 12357---------------------------------------- 1235814 May 2004. Summary of changes for version 20040514: 12359 123601) ACPI CA Core Subsystem: 12361 12362Fixed a problem where hardware GPE enable bits sometimes not set properly 12363during and after GPE method execution. Result of 04/27 changes. 12364 12365Removed extra "clear all GPEs" when sleeping/waking. 12366 12367Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 12368AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 12369to 12370the new AcpiEv* calls as appropriate. 12371 12372ACPI_OS_NAME was removed from the OS-specific headers. The default name 12373is 12374now "Microsoft Windows NT" for maximum compatibility. However this can 12375be 12376changed by modifying the acconfig.h file. 12377 12378Allow a single invocation of AcpiInstallNotifyHandler for a handler that 12379traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 12380 12381Run _INI methods on ThermalZone objects. This is against the ACPI 12382specification, but there is apparently ASL code in the field that has 12383these 12384_INI methods, and apparently "other" AML interpreters execute them. 12385 12386Performed a full 16/32/64 bit lint that resulted in some small changes. 12387 12388Added a sleep simulation command to the AML debugger to test sleep code. 12389 12390Code and Data Size: Current and previous core subsystem library sizes are 12391shown below. These are the code and data sizes for the acpica.lib 12392produced 12393by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12394any ACPI driver or OSPM code. The debug version of the code includes the 12395debug output trace mechanism and has a much larger code and data size. 12396Note 12397that these values will vary depending on the efficiency of the compiler 12398and 12399the compiler options used during generation. 12400 12401 Previous Release: 12402 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12403 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12404 Current Release: 12405 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12406 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 12407 12408---------------------------------------- 1240927 April 2004. Summary of changes for version 20040427: 12410 124111) ACPI CA Core Subsystem: 12412 12413Completed a major overhaul of the GPE handling within ACPI CA. There are 12414now three types of GPEs: wake-only, runtime-only, and combination 12415wake/run. 12416The only GPEs allowed to be combination wake/run are for button-style 12417devices such as a control-method power button, control-method sleep 12418button, 12419or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 12420not 12421referenced by any _PRW methods are marked for "runtime" and hardware 12422enabled. Any GPE that is referenced by a _PRW method is marked for 12423"wake" 12424(and disabled at runtime). However, at sleep time, only those GPEs that 12425have been specifically enabled for wake via the AcpiEnableGpe interface 12426will 12427actually be hardware enabled. 12428 12429A new external interface has been added, AcpiSetGpeType(), that is meant 12430to 12431be used by device drivers to force a GPE to a particular type. It will 12432be 12433especially useful for the drivers for the button devices mentioned above. 12434 12435Completed restructuring of the ACPI CA initialization sequence so that 12436default operation region handlers are installed before GPEs are 12437initialized 12438and the _PRW methods are executed. This will prevent errors when the 12439_PRW 12440methods attempt to access system memory or I/O space. 12441 12442GPE enable/disable no longer reads the GPE enable register. We now keep 12443the 12444enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 12445thus no longer depend on the hardware to maintain these bits. 12446 12447Always clear the wake status and fixed/GPE status bits before sleep, even 12448for state S5. 12449 12450Improved the AML debugger output for displaying the GPE blocks and their 12451current status. 12452 12453Added new strings for the _OSI method, of the form "Windows 2001 SPx" 12454where 12455x = 0,1,2,3,4. 12456 12457Fixed a problem where the physical address was incorrectly calculated 12458when 12459the Load() operator was used to directly load from an Operation Region 12460(vs. 12461loading from a Field object.) Also added check for minimum table length 12462for 12463this case. 12464 12465Fix for multiple mutex acquisition. Restore original thread SyncLevel on 12466mutex release. 12467 12468Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 12469consistency with the other fields returned. 12470 12471Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 12472structure for each GPE in the system, so the size of this structure is 12473important. 12474 12475CPU stack requirement reduction: Cleaned up the method execution and 12476object 12477evaluation paths so that now a parameter structure is passed, instead of 12478copying the various method parameters over and over again. 12479 12480In evregion.c: Correctly exit and reenter the interpreter region if and 12481only if dispatching an operation region request to a user-installed 12482handler. 12483Do not exit/reenter when dispatching to a default handler (e.g., default 12484system memory or I/O handlers) 12485 12486 12487Notes for updating drivers for the new GPE support. The following 12488changes 12489must be made to ACPI-related device drivers that are attached to one or 12490more 12491GPEs: (This information will be added to the ACPI CA Programmer 12492Reference.) 12493 124941) AcpiInstallGpeHandler no longer automatically enables the GPE, you 12495must 12496explicitly call AcpiEnableGpe. 124972) There is a new interface called AcpiSetGpeType. This should be called 12498before enabling the GPE. Also, this interface will automatically disable 12499the GPE if it is currently enabled. 125003) AcpiEnableGpe no longer supports a GPE type flag. 12501 12502Specific drivers that must be changed: 125031) EC driver: 12504 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 12505AeGpeHandler, NULL); 12506 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 12507 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 12508 125092) Button Drivers (Power, Lid, Sleep): 12510Run _PRW method under parent device 12511If _PRW exists: /* This is a control-method button */ 12512 Extract GPE number and possibly GpeDevice 12513 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 12514 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 12515 12516For all other devices that have _PRWs, we automatically set the GPE type 12517to 12518ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 12519This 12520must be done on a selective basis, usually requiring some kind of user 12521app 12522to allow the user to pick the wake devices. 12523 12524 12525Code and Data Size: Current and previous core subsystem library sizes are 12526shown below. These are the code and data sizes for the acpica.lib 12527produced 12528by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12529any ACPI driver or OSPM code. The debug version of the code includes the 12530debug output trace mechanism and has a much larger code and data size. 12531Note 12532that these values will vary depending on the efficiency of the compiler 12533and 12534the compiler options used during generation. 12535 12536 Previous Release: 12537 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12538 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12539 Current Release: 12540 12541 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 12542 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 12543 12544 12545 12546---------------------------------------- 1254702 April 2004. Summary of changes for version 20040402: 12548 125491) ACPI CA Core Subsystem: 12550 12551Fixed an interpreter problem where an indirect store through an ArgX 12552parameter was incorrectly applying the "implicit conversion rules" during 12553the store. From the ACPI specification: "If the target is a method local 12554or 12555argument (LocalX or ArgX), no conversion is performed and the result is 12556stored directly to the target". The new behavior is to disable implicit 12557conversion during ALL stores to an ArgX. 12558 12559Changed the behavior of the _PRW method scan to ignore any and all errors 12560returned by a given _PRW. This prevents the scan from aborting from the 12561failure of any single _PRW. 12562 12563Moved the runtime configuration parameters from the global init procedure 12564to 12565static variables in acglobal.h. This will allow the host to override the 12566default values easily. 12567 12568Code and Data Size: Current and previous core subsystem library sizes are 12569shown below. These are the code and data sizes for the acpica.lib 12570produced 12571by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12572any ACPI driver or OSPM code. The debug version of the code includes the 12573debug output trace mechanism and has a much larger code and data size. 12574Note 12575that these values will vary depending on the efficiency of the compiler 12576and 12577the compiler options used during generation. 12578 12579 Previous Release: 12580 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12581 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12582 Current Release: 12583 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 12584 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 12585 12586 125872) iASL Compiler/Disassembler: 12588 12589iASL now fully disassembles SSDTs. However, External() statements are 12590not 12591generated automatically for unresolved symbols at this time. This is a 12592planned feature for future implementation. 12593 12594Fixed a scoping problem in the disassembler that occurs when the type of 12595the 12596target of a Scope() operator is overridden. This problem caused an 12597incorrectly nested internal namespace to be constructed. 12598 12599Any warnings or errors that are emitted during disassembly are now 12600commented 12601out automatically so that the resulting file can be recompiled without 12602any 12603hand editing. 12604 12605---------------------------------------- 1260626 March 2004. Summary of changes for version 20040326: 12607 126081) ACPI CA Core Subsystem: 12609 12610Implemented support for "wake" GPEs via interaction between GPEs and the 12611_PRW methods. Every GPE that is pointed to by one or more _PRWs is 12612identified as a WAKE GPE and by default will no longer be enabled at 12613runtime. Previously, we were blindly enabling all GPEs with a 12614corresponding 12615_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 12616We 12617believe this has been the cause of thousands of "spurious" GPEs on some 12618systems. 12619 12620This new GPE behavior is can be reverted to the original behavior (enable 12621ALL GPEs at runtime) via a runtime flag. 12622 12623Fixed a problem where aliased control methods could not access objects 12624properly. The proper scope within the namespace was not initialized 12625(transferred to the target of the aliased method) before executing the 12626target method. 12627 12628Fixed a potential race condition on internal object deletion on the 12629return 12630object in AcpiEvaluateObject. 12631 12632Integrated a fix for resource descriptors where both _MEM and _MTP were 12633being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 12634wide, 0x0F instead of 0x03.) 12635 12636Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 12637preventing 12638a 12639fault in some cases. 12640 12641Updated Notify() values for debug statements in evmisc.c 12642 12643Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 12644 12645Code and Data Size: Current and previous core subsystem library sizes are 12646shown below. These are the code and data sizes for the acpica.lib 12647produced 12648by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12649any ACPI driver or OSPM code. The debug version of the code includes the 12650debug output trace mechanism and has a much larger code and data size. 12651Note 12652that these values will vary depending on the efficiency of the compiler 12653and 12654the compiler options used during generation. 12655 12656 Previous Release: 12657 12658 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12659 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12660 Current Release: 12661 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 12662 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 12663 12664---------------------------------------- 1266511 March 2004. Summary of changes for version 20040311: 12666 126671) ACPI CA Core Subsystem: 12668 12669Fixed a problem where errors occurring during the parse phase of control 12670method execution did not abort cleanly. For example, objects created and 12671installed in the namespace were not deleted. This caused all subsequent 12672invocations of the method to return the AE_ALREADY_EXISTS exception. 12673 12674Implemented a mechanism to force a control method to "Serialized" 12675execution 12676if the method attempts to create namespace objects. (The root of the 12677AE_ALREADY_EXISTS problem.) 12678 12679Implemented support for the predefined _OSI "internal" control method. 12680Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 12681and 12682"Windows 2001.1", and can be easily upgraded for new strings as 12683necessary. 12684This feature will allow "other" operating systems to execute the fully 12685tested, "Windows" code path through the ASL code 12686 12687Global Lock Support: Now allows multiple acquires and releases with any 12688internal thread. Removed concept of "owning thread" for this special 12689mutex. 12690 12691Fixed two functions that were inappropriately declaring large objects on 12692the 12693CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 12694during 12695method execution considerably. 12696 12697Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 12698S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 12699 12700Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 12701defined on the machine. 12702 12703Implemented two runtime options: One to force all control method 12704execution 12705to "Serialized" to mimic Windows behavior, another to disable _OSI 12706support 12707if it causes problems on a given machine. 12708 12709Code and Data Size: Current and previous core subsystem library sizes are 12710shown below. These are the code and data sizes for the acpica.lib 12711produced 12712by the Microsoft Visual C++ 6.0 compiler, and these values do not include 12713any ACPI driver or OSPM code. The debug version of the code includes the 12714debug output trace mechanism and has a much larger code and data size. 12715Note 12716that these values will vary depending on the efficiency of the compiler 12717and 12718the compiler options used during generation. 12719 12720 Previous Release: 12721 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12722 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12723 Current Release: 12724 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 12725 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 12726 127272) iASL Compiler/Disassembler: 12728 12729Fixed an array size problem for FreeBSD that would cause the compiler to 12730fault. 12731 12732---------------------------------------- 1273320 February 2004. Summary of changes for version 20040220: 12734 12735 127361) ACPI CA Core Subsystem: 12737 12738Implemented execution of _SxD methods for Device objects in the 12739GetObjectInfo interface. 12740 12741Fixed calls to _SST method to pass the correct arguments. 12742 12743Added a call to _SST on wake to restore to "working" state. 12744 12745Check for End-Of-Buffer failure case in the WalkResources interface. 12746 12747Integrated fix for 64-bit alignment issue in acglobal.h by moving two 12748structures to the beginning of the file. 12749 12750After wake, clear GPE status register(s) before enabling GPEs. 12751 12752After wake, clear/enable power button. (Perhaps we should clear/enable 12753all 12754fixed events upon wake.) 12755 12756Fixed a couple of possible memory leaks in the Namespace manager. 12757 12758Integrated latest acnetbsd.h file. 12759 12760---------------------------------------- 1276111 February 2004. Summary of changes for version 20040211: 12762 12763 127641) ACPI CA Core Subsystem: 12765 12766Completed investigation and implementation of the call-by-reference 12767mechanism for control method arguments. 12768 12769Fixed a problem where a store of an object into an indexed package could 12770fail if the store occurs within a different method than the method that 12771created the package. 12772 12773Fixed a problem where the ToDecimal operator could return incorrect 12774results. 12775 12776Fixed a problem where the CopyObject operator could fail on some of the 12777more 12778obscure objects (e.g., Reference objects.) 12779 12780Improved the output of the Debug object to display buffer, package, and 12781index objects. 12782 12783Fixed a problem where constructs of the form "RefOf (ArgX)" did not 12784return 12785the expected result. 12786 12787Added permanent ACPI_REPORT_ERROR macros for all instances of the 12788ACPI_AML_INTERNAL exception. 12789 12790Integrated latest version of acfreebsd.h 12791 12792---------------------------------------- 1279316 January 2004. Summary of changes for version 20040116: 12794 12795The purpose of this release is primarily to update the copyright years in 12796each module, thus causing a huge number of diffs. There are a few small 12797functional changes, however. 12798 127991) ACPI CA Core Subsystem: 12800 12801Improved error messages when there is a problem finding one or more of 12802the 12803required base ACPI tables 12804 12805Reintroduced the definition of APIC_HEADER in actbl.h 12806 12807Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 12808 12809Removed extraneous reference to NewObj in dsmthdat.c 12810 128112) iASL compiler 12812 12813Fixed a problem introduced in December that disabled the correct 12814disassembly 12815of Resource Templates 12816 12817 12818---------------------------------------- 1281903 December 2003. Summary of changes for version 20031203: 12820 128211) ACPI CA Core Subsystem: 12822 12823Changed the initialization of Operation Regions during subsystem 12824init to perform two entire walks of the ACPI namespace; The first 12825to initialize the regions themselves, the second to execute the 12826_REG methods. This fixed some interdependencies across _REG 12827methods found on some machines. 12828 12829Fixed a problem where a Store(Local0, Local1) could simply update 12830the object reference count, and not create a new copy of the 12831object if the Local1 is uninitialized. 12832 12833Implemented support for the _SST reserved method during sleep 12834transitions. 12835 12836Implemented support to clear the SLP_TYP and SLP_EN bits when 12837waking up, this is apparently required by some machines. 12838 12839When sleeping, clear the wake status only if SleepState is not S5. 12840 12841Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 12842pointer arithmetic advanced a string pointer too far. 12843 12844Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 12845could be returned if the requested table has not been loaded. 12846 12847Within the support for IRQ resources, restructured the handling of 12848the active and edge/level bits. 12849 12850Fixed a few problems in AcpiPsxExecute() where memory could be 12851leaked under certain error conditions. 12852 12853Improved error messages for the cases where the ACPI mode could 12854not be entered. 12855 12856Code and Data Size: Current and previous core subsystem library 12857sizes are shown below. These are the code and data sizes for the 12858acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12859these values do not include any ACPI driver or OSPM code. The 12860debug version of the code includes the debug output trace 12861mechanism and has a much larger code and data size. Note that 12862these values will vary depending on the efficiency of the compiler 12863and the compiler options used during generation. 12864 12865 Previous Release (20031029): 12866 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12867 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12868 Current Release: 12869 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12870 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12871 128722) iASL Compiler/Disassembler: 12873 12874Implemented a fix for the iASL disassembler where a bad index was 12875generated. This was most noticeable on 64-bit platforms 12876 12877 12878---------------------------------------- 1287929 October 2003. Summary of changes for version 20031029: 12880 128811) ACPI CA Core Subsystem: 12882 12883 12884Fixed a problem where a level-triggered GPE with an associated 12885_Lxx control method was incorrectly cleared twice. 12886 12887Fixed a problem with the Field support code where an access can 12888occur beyond the end-of-region if the field is non-aligned but 12889extends to the very end of the parent region (resulted in an 12890AE_AML_REGION_LIMIT exception.) 12891 12892Fixed a problem with ACPI Fixed Events where an RT Clock handler 12893would not get invoked on an RTC event. The RTC event bitmasks for 12894the PM1 registers were not being initialized properly. 12895 12896Implemented support for executing _STA and _INI methods for 12897Processor objects. Although this is currently not part of the 12898ACPI specification, there is existing ASL code that depends on the 12899init-time execution of these methods. 12900 12901Implemented and deployed a GetDescriptorName function to decode 12902the various types of internal descriptors. Guards against null 12903descriptors during debug output also. 12904 12905Implemented and deployed a GetNodeName function to extract the 4- 12906character namespace node name. This function simplifies the debug 12907and error output, as well as guarding against null pointers during 12908output. 12909 12910Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 12911simplify the debug and error output of 64-bit integers. This 12912macro replaces the HIDWORD and LODWORD macros for dumping these 12913integers. 12914 12915Updated the implementation of the Stall() operator to only call 12916AcpiOsStall(), and also return an error if the operand is larger 12917than 255. This preserves the required behavior of not 12918relinquishing the processor, as would happen if AcpiOsSleep() was 12919called for "long stalls". 12920 12921Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 12922initialized are now treated as NOOPs. 12923 12924Cleaned up a handful of warnings during 64-bit generation. 12925 12926Fixed a reported error where and incorrect GPE number was passed 12927to the GPE dispatch handler. This value is only used for error 12928output, however. Used this opportunity to clean up and streamline 12929the GPE dispatch code. 12930 12931Code and Data Size: Current and previous core subsystem library 12932sizes are shown below. These are the code and data sizes for the 12933acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12934these values do not include any ACPI driver or OSPM code. The 12935 12936debug version of the code includes the debug output trace 12937mechanism and has a much larger code and data size. Note that 12938these values will vary depending on the efficiency of the compiler 12939and the compiler options used during generation. 12940 12941 Previous Release (20031002): 12942 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12943 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12944 Current Release: 12945 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12946 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12947 12948 129492) iASL Compiler/Disassembler: 12950 12951Updated the iASL compiler to return an error if the operand to the 12952Stall() operator is larger than 255. 12953 12954 12955---------------------------------------- 1295602 October 2003. Summary of changes for version 20031002: 12957 12958 129591) ACPI CA Core Subsystem: 12960 12961Fixed a problem with Index Fields where the index was not 12962incremented for fields that require multiple writes to the 12963index/data registers (Fields that are wider than the data 12964register.) 12965 12966Fixed a problem with all Field objects where a write could go 12967beyond the end-of-field if the field was larger than the access 12968granularity and therefore required multiple writes to complete the 12969request. An extra write beyond the end of the field could happen 12970inadvertently. 12971 12972Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 12973would incorrectly be returned if the width of the Data Register 12974was larger than the specified field access width. 12975 12976Completed fixes for LoadTable() and Unload() and verified their 12977operation. Implemented full support for the "DdbHandle" object 12978throughout the ACPI CA subsystem. 12979 12980Implemented full support for the MADT and ECDT tables in the ACPI 12981CA header files. Even though these tables are not directly 12982consumed by ACPI CA, the header definitions are useful for ACPI 12983device drivers. 12984 12985Integrated resource descriptor fixes posted to the Linux ACPI 12986list. This included checks for minimum descriptor length, and 12987support for trailing NULL strings within descriptors that have 12988optional string elements. 12989 12990Code and Data Size: Current and previous core subsystem library 12991sizes are shown below. These are the code and data sizes for the 12992acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12993these values do not include any ACPI driver or OSPM code. The 12994debug version of the code includes the debug output trace 12995mechanism and has a much larger code and data size. Note that 12996these values will vary depending on the efficiency of the compiler 12997and the compiler options used during generation. 12998 12999 Previous Release (20030918): 13000 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13001 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13002 Current Release: 13003 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 13004 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 13005 13006 130072) iASL Compiler: 13008 13009Implemented detection of non-ASCII characters within the input 13010source ASL file. This catches attempts to compile binary (AML) 13011files early in the compile, with an informative error message. 13012 13013Fixed a problem where the disassembler would fault if the output 13014filename could not be generated or if the output file could not be 13015opened. 13016 13017---------------------------------------- 1301818 September 2003. Summary of changes for version 20030918: 13019 13020 130211) ACPI CA Core Subsystem: 13022 13023Found and fixed a longstanding problem with the late execution of 13024the various deferred AML opcodes (such as Operation Regions, 13025Buffer Fields, Buffers, and Packages). If the name string 13026specified for the name of the new object placed the object in a 13027scope other than the current scope, the initialization/execution 13028of the opcode failed. The solution to this problem was to 13029implement a mechanism where the late execution of such opcodes 13030does not attempt to lookup/create the name a second time in an 13031incorrect scope. This fixes the "region size computed 13032incorrectly" problem. 13033 13034Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 13035Global Lock AE_BAD_PARAMETER error. 13036 13037Fixed several 64-bit issues with prototypes, casting and data 13038types. 13039 13040Removed duplicate prototype from acdisasm.h 13041 13042Fixed an issue involving EC Operation Region Detach (Shaohua Li) 13043 13044Code and Data Size: Current and previous core subsystem library 13045sizes are shown below. These are the code and data sizes for the 13046acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13047these values do not include any ACPI driver or OSPM code. The 13048debug version of the code includes the debug output trace 13049mechanism and has a much larger code and data size. Note that 13050these values will vary depending on the efficiency of the compiler 13051and the compiler options used during generation. 13052 13053 Previous Release: 13054 13055 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13056 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13057 Current Release: 13058 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 13059 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 13060 13061 130622) Linux: 13063 13064Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 13065correct sleep time in seconds. 13066 13067---------------------------------------- 1306814 July 2003. Summary of changes for version 20030619: 13069 130701) ACPI CA Core Subsystem: 13071 13072Parse SSDTs in order discovered, as opposed to reverse order 13073(Hrvoje Habjanic) 13074 13075Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 13076Klausner, 13077 Nate Lawson) 13078 13079 130802) Linux: 13081 13082Dynamically allocate SDT list (suggested by Andi Kleen) 13083 13084proc function return value cleanups (Andi Kleen) 13085 13086Correctly handle NMI watchdog during long stalls (Andrew Morton) 13087 13088Make it so acpismp=force works (reported by Andrew Morton) 13089 13090 13091---------------------------------------- 1309219 June 2003. Summary of changes for version 20030619: 13093 130941) ACPI CA Core Subsystem: 13095 13096Fix To/FromBCD, eliminating the need for an arch-specific #define. 13097 13098Do not acquire a semaphore in the S5 shutdown path. 13099 13100Fix ex_digits_needed for 0. (Takayoshi Kochi) 13101 13102Fix sleep/stall code reversal. (Andi Kleen) 13103 13104Revert a change having to do with control method calling 13105semantics. 13106 131072) Linux: 13108 13109acpiphp update (Takayoshi Kochi) 13110 13111Export acpi_disabled for sonypi (Stelian Pop) 13112 13113Mention acpismp=force in config help 13114 13115Re-add acpitable.c and acpismp=force. This improves backwards 13116 13117compatibility and also cleans up the code to a significant degree. 13118 13119Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 13120 13121---------------------------------------- 1312222 May 2003. Summary of changes for version 20030522: 13123 131241) ACPI CA Core Subsystem: 13125 13126Found and fixed a reported problem where an AE_NOT_FOUND error 13127occurred occasionally during _BST evaluation. This turned out to 13128be an Owner ID allocation issue where a called method did not get 13129a new ID assigned to it. Eventually, (after 64k calls), the Owner 13130ID UINT16 would wraparound so that the ID would be the same as the 13131caller's and the called method would delete the caller's 13132namespace. 13133 13134Implemented extended error reporting for control methods that are 13135aborted due to a run-time exception. Output includes the exact 13136AML instruction that caused the method abort, a dump of the method 13137locals and arguments at the time of the abort, and a trace of all 13138nested control method calls. 13139 13140Modified the interpreter to allow the creation of buffers of zero 13141length from the AML code. Implemented new code to ensure that no 13142attempt is made to actually allocate a memory buffer (of length 13143zero) - instead, a simple buffer object with a NULL buffer pointer 13144and length zero is created. A warning is no longer issued when 13145the AML attempts to create a zero-length buffer. 13146 13147Implemented a workaround for the "leading asterisk issue" in 13148_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 13149asterisk is automatically removed if present in any HID, UID, or 13150CID strings. The iASL compiler will still flag this asterisk as 13151an error, however. 13152 13153Implemented full support for _CID methods that return a package of 13154multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 13155now additionally returns a device _CID list if present. This 13156required a change to the external interface in order to pass an 13157ACPI_BUFFER object as a parameter since the _CID list is of 13158variable length. 13159 13160Fixed a problem with the new AE_SAME_HANDLER exception where 13161handler initialization code did not know about this exception. 13162 13163Code and Data Size: Current and previous core subsystem library 13164sizes are shown below. These are the code and data sizes for the 13165acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 13166these values do not include any ACPI driver or OSPM code. The 13167debug version of the code includes the debug output trace 13168mechanism and has a much larger code and data size. Note that 13169these values will vary depending on the efficiency of the compiler 13170and the compiler options used during generation. 13171 13172 Previous Release (20030509): 13173 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13174 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13175 Current Release: 13176 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 13177 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 13178 13179 131802) Linux: 13181 13182Fixed a bug in which we would reinitialize the ACPI interrupt 13183after it was already working, thus disabling all ACPI and the IRQs 13184for any other device sharing the interrupt. (Thanks to Stian 13185Jordet) 13186 13187Toshiba driver update (John Belmonte) 13188 13189Return only 0 or 1 for our interrupt handler status (Andrew 13190Morton) 13191 13192 131933) iASL Compiler: 13194 13195Fixed a reported problem where multiple (nested) ElseIf() 13196statements were not handled correctly by the compiler, resulting 13197in incorrect warnings and incorrect AML code. This was a problem 13198in both the ASL parser and the code generator. 13199 13200 132014) Documentation: 13202 13203Added changes to existing interfaces, new exception codes, and new 13204text concerning reference count object management versus garbage 13205collection. 13206 13207---------------------------------------- 1320809 May 2003. Summary of changes for version 20030509. 13209 13210 132111) ACPI CA Core Subsystem: 13212 13213Changed the subsystem initialization sequence to hold off 13214installation of address space handlers until the hardware has been 13215initialized and the system has entered ACPI mode. This is because 13216the installation of space handlers can cause _REG methods to be 13217run. Previously, the _REG methods could potentially be run before 13218ACPI mode was enabled. 13219 13220Fixed some memory leak issues related to address space handler and 13221notify handler installation. There were some problems with the 13222reference count mechanism caused by the fact that the handler 13223objects are shared across several namespace objects. 13224 13225Fixed a reported problem where reference counts within the 13226namespace were not properly updated when named objects created by 13227method execution were deleted. 13228 13229Fixed a reported problem where multiple SSDTs caused a deletion 13230issue during subsystem termination. Restructured the table data 13231structures to simplify the linked lists and the related code. 13232 13233Fixed a problem where the table ID associated with secondary 13234tables (SSDTs) was not being propagated into the namespace objects 13235created by those tables. This would only present a problem for 13236tables that are unloaded at run-time, however. 13237 13238Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 13239type as the length parameter (instead of UINT32). 13240 13241Solved a long-standing problem where an ALREADY_EXISTS error 13242appears on various systems. This problem could happen when there 13243are multiple PCI_Config operation regions under a single PCI root 13244bus. This doesn't happen very frequently, but there are some 13245systems that do this in the ASL. 13246 13247Fixed a reported problem where the internal DeleteNode function 13248was incorrectly handling the case where a namespace node was the 13249first in the parent's child list, and had additional peers (not 13250the only child, but first in the list of children.) 13251 13252Code and Data Size: Current core subsystem library sizes are shown 13253below. These are the code and data sizes for the acpica.lib 13254produced by the Microsoft Visual C++ 6.0 compiler, and these 13255values do not include any ACPI driver or OSPM code. The debug 13256version of the code includes the debug output trace mechanism and 13257has a much larger code and data size. Note that these values will 13258vary depending on the efficiency of the compiler and the compiler 13259options used during generation. 13260 13261 Previous Release 13262 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13263 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13264 Current Release: 13265 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 13266 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 13267 13268 132692) Linux: 13270 13271Allow ":" in OS override string (Ducrot Bruno) 13272 13273Kobject fix (Greg KH) 13274 13275 132763 iASL Compiler/Disassembler: 13277 13278Fixed a problem in the generation of the C source code files (AML 13279is emitted in C source statements for BIOS inclusion) where the 13280Ascii dump that appears within a C comment at the end of each line 13281could cause a compile time error if the AML sequence happens to 13282have an open comment or close comment sequence embedded. 13283 13284 13285---------------------------------------- 1328624 April 2003. Summary of changes for version 20030424. 13287 13288 132891) ACPI CA Core Subsystem: 13290 13291Support for big-endian systems has been implemented. Most of the 13292support has been invisibly added behind big-endian versions of the 13293ACPI_MOVE_* macros. 13294 13295Fixed a problem in AcpiHwDisableGpeBlock() and 13296AcpiHwClearGpeBlock() where an incorrect offset was passed to the 13297low level hardware write routine. The offset parameter was 13298actually eliminated from the low level read/write routines because 13299they had become obsolete. 13300 13301Fixed a problem where a handler object was deleted twice during 13302the removal of a fixed event handler. 13303 13304 133052) Linux: 13306 13307A fix for SMP systems with link devices was contributed by 13308 13309Compaq's Dan Zink. 13310 13311(2.5) Return whether we handled the interrupt in our IRQ handler. 13312(Linux ISRs no longer return void, so we can propagate the handler 13313return value from the ACPI CA core back to the OS.) 13314 13315 13316 133173) Documentation: 13318 13319The ACPI CA Programmer Reference has been updated to reflect new 13320interfaces and changes to existing interfaces. 13321 13322---------------------------------------- 1332328 March 2003. Summary of changes for version 20030328. 13324 133251) ACPI CA Core Subsystem: 13326 13327The GPE Block Device support has been completed. New interfaces 13328are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 13329interfaces (enable, disable, clear, getstatus) have been split 13330into separate interfaces for Fixed Events and General Purpose 13331Events (GPEs) in order to support GPE Block Devices properly. 13332 13333Fixed a problem where the error message "Failed to acquire 13334semaphore" would appear during operations on the embedded 13335controller (EC). 13336 13337Code and Data Size: Current core subsystem library sizes are shown 13338below. These are the code and data sizes for the acpica.lib 13339produced by the Microsoft Visual C++ 6.0 compiler, and these 13340values do not include any ACPI driver or OSPM code. The debug 13341version of the code includes the debug output trace mechanism and 13342has a much larger code and data size. Note that these values will 13343vary depending on the efficiency of the compiler and the compiler 13344options used during generation. 13345 13346 Previous Release 13347 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13348 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13349 Current Release: 13350 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 13351 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 13352 13353 13354---------------------------------------- 1335528 February 2003. Summary of changes for version 20030228. 13356 13357 133581) ACPI CA Core Subsystem: 13359 13360The GPE handling and dispatch code has been completely overhauled 13361in preparation for support of GPE Block Devices (ID ACPI0006). 13362This affects internal data structures and code only; there should 13363be no differences visible externally. One new file has been 13364added, evgpeblk.c 13365 13366The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 13367fields that are used to determine the GPE block lengths. The 13368REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 13369structures are ignored. This is per the ACPI specification but it 13370isn't very clear. The full 256 Block 0/1 GPEs are now supported 13371(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 13372 13373In the SCI interrupt handler, removed the read of the PM1_CONTROL 13374register to look at the SCI_EN bit. On some machines, this read 13375causes an SMI event and greatly slows down SCI events. (This may 13376in fact be the cause of slow battery status response on some 13377systems.) 13378 13379Fixed a problem where a store of a NULL string to a package object 13380could cause the premature deletion of the object. This was seen 13381during execution of the battery _BIF method on some systems, 13382resulting in no battery data being returned. 13383 13384Added AcpiWalkResources interface to simplify parsing of resource 13385lists. 13386 13387Code and Data Size: Current core subsystem library sizes are shown 13388below. These are the code and data sizes for the acpica.lib 13389produced by the Microsoft Visual C++ 6.0 compiler, and these 13390values do not include any ACPI driver or OSPM code. The debug 13391version of the code includes the debug output trace mechanism and 13392has a much larger code and data size. Note that these values will 13393vary depending on the efficiency of the compiler and the compiler 13394options used during generation. 13395 13396 Previous Release 13397 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13398 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13399 Current Release: 13400 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 13401 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 13402 13403 134042) Linux 13405 13406S3 fixes (Ole Rohne) 13407 13408Update ACPI PHP driver with to use new acpi_walk_resource API 13409(Bjorn Helgaas) 13410 13411Add S4BIOS support (Pavel Machek) 13412 13413Map in entire table before performing checksum (John Stultz) 13414 13415Expand the mem= cmdline to allow the specification of reserved and 13416ACPI DATA blocks (Pavel Machek) 13417 13418Never use ACPI on VISWS 13419 13420Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 13421 13422Revert a change that allowed P_BLK lengths to be 4 or 5. This is 13423causing us to think that some systems support C2 when they really 13424don't. 13425 13426Do not count processor objects for non-present CPUs (Thanks to 13427Dominik Brodowski) 13428 13429 134303) iASL Compiler: 13431 13432Fixed a problem where ASL include files could not be found and 13433opened. 13434 13435Added support for the _PDC reserved name. 13436 13437 13438---------------------------------------- 1343922 January 2003. Summary of changes for version 20030122. 13440 13441 134421) ACPI CA Core Subsystem: 13443 13444Added a check for constructs of the form: Store (Local0, Local0) 13445where Local0 is not initialized. Apparently, some BIOS 13446programmers believe that this is a NOOP. Since this store doesn't 13447do anything anyway, the new prototype behavior will ignore this 13448error. This is a case where we can relax the strict checking in 13449the interpreter in the name of compatibility. 13450 13451 134522) Linux 13453 13454The AcpiSrc Source Conversion Utility has been released with the 13455Linux package for the first time. This is the utility that is 13456used to convert the ACPI CA base source code to the Linux version. 13457 13458(Both) Handle P_BLK lengths shorter than 6 more gracefully 13459 13460(Both) Move more headers to include/acpi, and delete an unused 13461header. 13462 13463(Both) Move drivers/acpi/include directory to include/acpi 13464 13465(Both) Boot functions don't use cmdline, so don't pass it around 13466 13467(Both) Remove include of unused header (Adrian Bunk) 13468 13469(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 13470the 13471former now also includes the latter, acpiphp.h only needs the one, 13472now. 13473 13474(2.5) Make it possible to select method of bios restoring after S3 13475resume. [=> no more ugly ifdefs] (Pavel Machek) 13476 13477(2.5) Make proc write interfaces work (Pavel Machek) 13478 13479(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 13480 13481(2.5) Break out ACPI Perf code into its own module, under cpufreq 13482(Dominik Brodowski) 13483 13484(2.4) S4BIOS support (Ducrot Bruno) 13485 13486(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 13487Visinoni) 13488 13489 134903) iASL Compiler: 13491 13492Added support to disassemble SSDT and PSDTs. 13493 13494Implemented support to obtain SSDTs from the Windows registry if 13495available. 13496 13497 13498---------------------------------------- 1349909 January 2003. Summary of changes for version 20030109. 13500 135011) ACPI CA Core Subsystem: 13502 13503Changed the behavior of the internal Buffer-to-String conversion 13504function. The current ACPI specification states that the contents 13505of the buffer are "converted to a string of two-character 13506hexadecimal numbers, each separated by a space". Unfortunately, 13507this definition is not backwards compatible with existing ACPI 1.0 13508implementations (although the behavior was not defined in the ACPI 135091.0 specification). The new behavior simply copies data from the 13510buffer to the string until a null character is found or the end of 13511the buffer is reached. The new String object is always null 13512terminated. This problem was seen during the generation of _BIF 13513battery data where incorrect strings were returned for battery 13514type, etc. This will also require an errata to the ACPI 13515specification. 13516 13517Renamed all instances of NATIVE_UINT and NATIVE_INT to 13518ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 13519 13520Copyright in all module headers (both Linux and non-Linux) has be 13521updated to 2003. 13522 13523Code and Data Size: Current core subsystem library sizes are shown 13524below. These are the code and data sizes for the acpica.lib 13525produced by the Microsoft Visual C++ 6.0 compiler, and these 13526values do not include any ACPI driver or OSPM code. The debug 13527version of the code includes the debug output trace mechanism and 13528has a much larger code and data size. Note that these values will 13529vary depending on the efficiency of the compiler and the compiler 13530options used during generation. 13531 13532 Previous Release 13533 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13534 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13535 Current Release: 13536 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13537 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13538 13539 135402) Linux 13541 13542Fixed an oops on module insertion/removal (Matthew Tippett) 13543 13544(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 13545 13546(2.5) Replace pr_debug (Randy Dunlap) 13547 13548(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 13549 13550(Both) Eliminate spawning of thread from timer callback, in favor 13551of schedule_work() 13552 13553(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 13554 13555(Both) Added define for Fixed Function HW region (Matthew Wilcox) 13556 13557(Both) Add missing statics to button.c (Pavel Machek) 13558 13559Several changes have been made to the source code translation 13560utility that generates the Linux Code in order to make the code 13561more "Linux-like": 13562 13563All typedefs on structs and unions have been removed in keeping 13564with the Linux coding style. 13565 13566Removed the non-Linux SourceSafe module revision number from each 13567module header. 13568 13569Completed major overhaul of symbols to be lowercased for linux. 13570Doubled the number of symbols that are lowercased. 13571 13572Fixed a problem where identifiers within procedure headers and 13573within quotes were not fully lower cased (they were left with a 13574starting capital.) 13575 13576Some C macros whose only purpose is to allow the generation of 16- 13577bit code are now completely removed in the Linux code, increasing 13578readability and maintainability. 13579 13580---------------------------------------- 13581 1358212 December 2002. Summary of changes for version 20021212. 13583 13584 135851) ACPI CA Core Subsystem: 13586 13587Fixed a problem where the creation of a zero-length AML Buffer 13588would cause a fault. 13589 13590Fixed a problem where a Buffer object that pointed to a static AML 13591buffer (in an ACPI table) could inadvertently be deleted, causing 13592memory corruption. 13593 13594Fixed a problem where a user buffer (passed in to the external 13595ACPI CA interfaces) could be overwritten if the buffer was too 13596small to complete the operation, causing memory corruption. 13597 13598Fixed a problem in the Buffer-to-String conversion code where a 13599string of length one was always returned, regardless of the size 13600of the input Buffer object. 13601 13602Removed the NATIVE_CHAR data type across the entire source due to 13603lack of need and lack of consistent use. 13604 13605Code and Data Size: Current core subsystem library sizes are shown 13606below. These are the code and data sizes for the acpica.lib 13607produced by the Microsoft Visual C++ 6.0 compiler, and these 13608values do not include any ACPI driver or OSPM code. The debug 13609version of the code includes the debug output trace mechanism and 13610has a much larger code and data size. Note that these values will 13611vary depending on the efficiency of the compiler and the compiler 13612options used during generation. 13613 13614 Previous Release 13615 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13616 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13617 Current Release: 13618 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 13619 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 13620 13621 13622---------------------------------------- 1362305 December 2002. Summary of changes for version 20021205. 13624 136251) ACPI CA Core Subsystem: 13626 13627Fixed a problem where a store to a String or Buffer object could 13628cause corruption of the DSDT if the object type being stored was 13629the same as the target object type and the length of the object 13630being stored was equal to or smaller than the original (existing) 13631target object. This was seen to cause corruption of battery _BIF 13632buffers if the _BIF method modified the buffer on the fly. 13633 13634Fixed a problem where an internal error was generated if a control 13635method invocation was used in an OperationRegion, Buffer, or 13636Package declaration. This was caused by the deferred parsing of 13637the control method and thus the deferred creation of the internal 13638method object. The solution to this problem was to create the 13639internal method object at the moment the method is encountered in 13640the first pass - so that subsequent references to the method will 13641able to obtain the required parameter count and thus properly 13642parse the method invocation. This problem presented itself as an 13643AE_AML_INTERNAL during the pass 1 parse phase during table load. 13644 13645Fixed a problem where the internal String object copy routine did 13646not always allocate sufficient memory for the target String object 13647and caused memory corruption. This problem was seen to cause 13648"Allocation already present in list!" errors as memory allocation 13649became corrupted. 13650 13651Implemented a new function for the evaluation of namespace objects 13652that allows the specification of the allowable return object 13653types. This simplifies a lot of code that checks for a return 13654object of one or more specific objects returned from the 13655evaluation (such as _STA, etc.) This may become and external 13656function if it would be useful to ACPI-related drivers. 13657 13658Completed another round of prefixing #defines with "ACPI_" for 13659clarity. 13660 13661Completed additional code restructuring to allow more modular 13662linking for iASL compiler and AcpiExec. Several files were split 13663creating new files. New files: nsparse.c dsinit.c evgpe.c 13664 13665Implemented an abort mechanism to terminate an executing control 13666method via the AML debugger. This feature is useful for debugging 13667control methods that depend (wait) for specific hardware 13668responses. 13669 13670Code and Data Size: Current core subsystem library sizes are shown 13671below. These are the code and data sizes for the acpica.lib 13672produced by the Microsoft Visual C++ 6.0 compiler, and these 13673values do not include any ACPI driver or OSPM code. The debug 13674version of the code includes the debug output trace mechanism and 13675has a much larger code and data size. Note that these values will 13676vary depending on the efficiency of the compiler and the compiler 13677options used during generation. 13678 13679 Previous Release 13680 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13681 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13682 Current Release: 13683 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 13684 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 13685 13686 136872) iASL Compiler/Disassembler 13688 13689Fixed a compiler code generation problem for "Interrupt" Resource 13690Descriptors. If specified in the ASL, the optional "Resource 13691Source Index" and "Resource Source" fields were not inserted into 13692the correct location within the AML resource descriptor, creating 13693an invalid descriptor. 13694 13695Fixed a disassembler problem for "Interrupt" resource descriptors. 13696The optional "Resource Source Index" and "Resource Source" fields 13697were ignored. 13698 13699 13700---------------------------------------- 1370122 November 2002. Summary of changes for version 20021122. 13702 13703 137041) ACPI CA Core Subsystem: 13705 13706Fixed a reported problem where an object stored to a Method Local 13707or Arg was not copied to a new object during the store - the 13708object pointer was simply copied to the Local/Arg. This caused 13709all subsequent operations on the Local/Arg to also affect the 13710original source of the store operation. 13711 13712Fixed a problem where a store operation to a Method Local or Arg 13713was not completed properly if the Local/Arg contained a reference 13714(from RefOf) to a named field. The general-purpose store-to- 13715namespace-node code is now used so that this case is handled 13716automatically. 13717 13718Fixed a problem where the internal object copy routine would cause 13719a protection fault if the object being copied was a Package and 13720contained either 1) a NULL package element or 2) a nested sub- 13721package. 13722 13723Fixed a problem with the GPE initialization that resulted from an 13724ambiguity in the ACPI specification. One section of the 13725specification states that both the address and length of the GPE 13726block must be zero if the block is not supported. Another section 13727implies that only the address need be zero if the block is not 13728supported. The code has been changed so that both the address and 13729the length must be non-zero to indicate a valid GPE block (i.e., 13730if either the address or the length is zero, the GPE block is 13731invalid.) 13732 13733Code and Data Size: Current core subsystem library sizes are shown 13734below. These are the code and data sizes for the acpica.lib 13735produced by the Microsoft Visual C++ 6.0 compiler, and these 13736values do not include any ACPI driver or OSPM code. The debug 13737version of the code includes the debug output trace mechanism and 13738has a much larger code and data size. Note that these values will 13739vary depending on the efficiency of the compiler and the compiler 13740options used during generation. 13741 13742 Previous Release 13743 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13744 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13745 Current Release: 13746 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13747 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 13748 13749 137502) Linux 13751 13752Cleaned up EC driver. Exported an external EC read/write 13753interface. By going through this, other drivers (most notably 13754sonypi) will be able to serialize access to the EC. 13755 13756 137573) iASL Compiler/Disassembler 13758 13759Implemented support to optionally generate include files for both 13760ASM and C (the -i switch). This simplifies BIOS development by 13761automatically creating include files that contain external 13762declarations for the symbols that are created within the 13763 13764(optionally generated) ASM and C AML source files. 13765 13766 13767---------------------------------------- 1376815 November 2002. Summary of changes for version 20021115. 13769 137701) ACPI CA Core Subsystem: 13771 13772Fixed a memory leak problem where an error during resolution of 13773 13774method arguments during a method invocation from another method 13775failed to cleanup properly by deleting all successfully resolved 13776argument objects. 13777 13778Fixed a problem where the target of the Index() operator was not 13779correctly constructed if the source object was a package. This 13780problem has not been detected because the use of a target operand 13781with Index() is very rare. 13782 13783Fixed a problem with the Index() operator where an attempt was 13784made to delete the operand objects twice. 13785 13786Fixed a problem where an attempt was made to delete an operand 13787twice during execution of the CondRefOf() operator if the target 13788did not exist. 13789 13790Implemented the first of perhaps several internal create object 13791functions that create and initialize a specific object type. This 13792consolidates duplicated code wherever the object is created, thus 13793shrinking the size of the subsystem. 13794 13795Implemented improved debug/error messages for errors that occur 13796during nested method invocations. All executing method pathnames 13797are displayed (with the error) as the call stack is unwound - thus 13798simplifying debug. 13799 13800Fixed a problem introduced in the 10/02 release that caused 13801premature deletion of a buffer object if a buffer was used as an 13802ASL operand where an integer operand is required (Thus causing an 13803implicit object conversion from Buffer to Integer.) The change in 13804the 10/02 release was attempting to fix a memory leak (albeit 13805incorrectly.) 13806 13807Code and Data Size: Current core subsystem library sizes are shown 13808below. These are the code and data sizes for the acpica.lib 13809produced by the Microsoft Visual C++ 6.0 compiler, and these 13810values do not include any ACPI driver or OSPM code. The debug 13811version of the code includes the debug output trace mechanism and 13812has a much larger code and data size. Note that these values will 13813vary depending on the efficiency of the compiler and the compiler 13814options used during generation. 13815 13816 Previous Release 13817 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13818 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13819 Current Release: 13820 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13821 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13822 13823 138242) Linux 13825 13826Changed the implementation of the ACPI semaphores to use down() 13827instead of down_interruptable(). It is important that the 13828execution of ACPI control methods not be interrupted by signals. 13829Methods must run to completion, or the system may be left in an 13830unknown/unstable state. 13831 13832Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 13833(Shawn Starr) 13834 13835 138363) iASL Compiler/Disassembler 13837 13838 13839Changed the default location of output files. All output files 13840are now placed in the current directory by default instead of in 13841the directory of the source file. This change may affect some 13842existing makefiles, but it brings the behavior of the compiler in 13843line with other similar tools. The location of the output files 13844can be overridden with the -p command line switch. 13845 13846 13847---------------------------------------- 1384811 November 2002. Summary of changes for version 20021111. 13849 13850 138510) ACPI Specification 2.0B is released and is now available at: 13852http://www.acpi.info/index.html 13853 13854 138551) ACPI CA Core Subsystem: 13856 13857Implemented support for the ACPI 2.0 SMBus Operation Regions. 13858This includes the early detection and handoff of the request to 13859the SMBus region handler (avoiding all of the complex field 13860support code), and support for the bidirectional return packet 13861from an SMBus write operation. This paves the way for the 13862development of SMBus drivers in each host operating system. 13863 13864Fixed a problem where the semaphore WAIT_FOREVER constant was 13865defined as 32 bits, but must be 16 bits according to the ACPI 13866specification. This had the side effect of causing ASL 13867Mutex/Event timeouts even though the ASL code requested a wait 13868forever. Changed all internal references to the ACPI timeout 13869parameter to 16 bits to prevent future problems. Changed the name 13870of WAIT_FOREVER to ACPI_WAIT_FOREVER. 13871 13872Code and Data Size: Current core subsystem library sizes are shown 13873below. These are the code and data sizes for the acpica.lib 13874produced by the Microsoft Visual C++ 6.0 compiler, and these 13875values do not include any ACPI driver or OSPM code. The debug 13876version of the code includes the debug output trace mechanism and 13877has a much larger code and data size. Note that these values will 13878vary depending on the efficiency of the compiler and the compiler 13879options used during generation. 13880 13881 Previous Release 13882 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13883 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13884 Current Release: 13885 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13886 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13887 13888 138892) Linux 13890 13891Module loading/unloading fixes (John Cagle) 13892 13893 138943) iASL Compiler/Disassembler 13895 13896Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 13897 13898Implemented support for the disassembly of all SMBus protocol 13899keywords (SMBQuick, SMBWord, etc.) 13900 13901---------------------------------------- 1390201 November 2002. Summary of changes for version 20021101. 13903 13904 139051) ACPI CA Core Subsystem: 13906 13907Fixed a problem where platforms that have a GPE1 block but no GPE0 13908block were not handled correctly. This resulted in a "GPE 13909overlap" error message. GPE0 is no longer required. 13910 13911Removed code added in the previous release that inserted nodes 13912into the namespace in alphabetical order. This caused some side- 13913effects on various machines. The root cause of the problem is 13914still under investigation since in theory, the internal ordering 13915of the namespace nodes should not matter. 13916 13917 13918Enhanced error reporting for the case where a named object is not 13919found during control method execution. The full ACPI namepath 13920(name reference) of the object that was not found is displayed in 13921this case. 13922 13923Note: as a result of the overhaul of the namespace object types in 13924the previous release, the namespace nodes for the predefined 13925scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 13926instead of ACPI_TYPE_ANY. This simplifies the namespace 13927management code but may affect code that walks the namespace tree 13928looking for specific object types. 13929 13930Code and Data Size: Current core subsystem library sizes are shown 13931below. These are the code and data sizes for the acpica.lib 13932produced by the Microsoft Visual C++ 6.0 compiler, and these 13933values do not include any ACPI driver or OSPM code. The debug 13934version of the code includes the debug output trace mechanism and 13935has a much larger code and data size. Note that these values will 13936vary depending on the efficiency of the compiler and the compiler 13937options used during generation. 13938 13939 Previous Release 13940 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13941 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13942 Current Release: 13943 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13944 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13945 13946 139472) Linux 13948 13949Fixed a problem introduced in the previous release where the 13950Processor and Thermal objects were not recognized and installed in 13951/proc. This was related to the scope type change described above. 13952 13953 139543) iASL Compiler/Disassembler 13955 13956Implemented the -g option to get all of the required ACPI tables 13957from the registry and save them to files (Windows version of the 13958compiler only.) The required tables are the FADT, FACS, and DSDT. 13959 13960Added ACPI table checksum validation during table disassembly in 13961order to catch corrupted tables. 13962 13963 13964---------------------------------------- 1396522 October 2002. Summary of changes for version 20021022. 13966 139671) ACPI CA Core Subsystem: 13968 13969Implemented a restriction on the Scope operator that the target 13970must already exist in the namespace at the time the operator is 13971encountered (during table load or method execution). In other 13972words, forward references are not allowed and Scope() cannot 13973create a new object. This changes the previous behavior where the 13974interpreter would create the name if not found. This new behavior 13975correctly enables the search-to-root algorithm during namespace 13976lookup of the target name. Because of this upsearch, this fixes 13977the known Compaq _SB_.OKEC problem and makes both the AML 13978interpreter and iASL compiler compatible with other ACPI 13979implementations. 13980 13981Completed a major overhaul of the internal ACPI object types for 13982the ACPI Namespace and the associated operand objects. Many of 13983these types had become obsolete with the introduction of the two- 13984pass namespace load. This cleanup simplifies the code and makes 13985the entire namespace load mechanism much clearer and easier to 13986understand. 13987 13988Improved debug output for tracking scope opening/closing to help 13989diagnose scoping issues. The old scope name as well as the new 13990scope name are displayed. Also improved error messages for 13991problems with ASL Mutex objects and error messages for GPE 13992problems. 13993 13994Cleaned up the namespace dump code, removed obsolete code. 13995 13996All string output (for all namespace/object dumps) now uses the 13997common ACPI string output procedure which handles escapes properly 13998and does not emit non-printable characters. 13999 14000Fixed some issues with constants in the 64-bit version of the 14001local C library (utclib.c) 14002 14003 140042) Linux 14005 14006EC Driver: No longer attempts to acquire the Global Lock at 14007interrupt level. 14008 14009 140103) iASL Compiler/Disassembler 14011 14012Implemented ACPI 2.0B grammar change that disallows all Type 1 and 140132 opcodes outside of a control method. This means that the 14014"executable" operators (versus the "namespace" operators) cannot 14015be used at the table level; they can only be used within a control 14016method. 14017 14018Implemented the restriction on the Scope() operator where the 14019target must already exist in the namespace at the time the 14020operator is encountered (during ASL compilation). In other words, 14021forward references are not allowed and Scope() cannot create a new 14022object. This makes the iASL compiler compatible with other ACPI 14023implementations and makes the Scope() implementation adhere to the 14024ACPI specification. 14025 14026Fixed a problem where namepath optimization for the Alias operator 14027was optimizing the wrong path (of the two namepaths.) This caused 14028a "Missing alias link" error message. 14029 14030Fixed a problem where an "unknown reserved name" warning could be 14031incorrectly generated for names like "_SB" when the trailing 14032underscore is not used in the original ASL. 14033 14034Fixed a problem where the reserved name check did not handle 14035NamePaths with multiple NameSegs correctly. The first nameseg of 14036the NamePath was examined instead of the last NameSeg. 14037 14038 14039---------------------------------------- 14040 1404102 October 2002. Summary of changes for this release. 14042 14043 140441) ACPI CA Core Subsystem version 20021002: 14045 14046Fixed a problem where a store/copy of a string to an existing 14047string did not always set the string length properly in the String 14048object. 14049 14050Fixed a reported problem with the ToString operator where the 14051behavior was identical to the ToHexString operator instead of just 14052simply converting a raw buffer to a string data type. 14053 14054Fixed a problem where CopyObject and the other "explicit" 14055conversion operators were not updating the internal namespace node 14056type as part of the store operation. 14057 14058Fixed a memory leak during implicit source operand conversion 14059where the original object was not deleted if it was converted to a 14060new object of a different type. 14061 14062Enhanced error messages for all problems associated with namespace 14063lookups. Common procedure generates and prints the lookup name as 14064well as the formatted status. 14065 14066Completed implementation of a new design for the Alias support 14067within the namespace. The existing design did not handle the case 14068where a new object was assigned to one of the two names due to the 14069use of an explicit conversion operator, resulting in the two names 14070pointing to two different objects. The new design simply points 14071the Alias name to the original name node - not to the object. 14072This results in a level of indirection that must be handled in the 14073name resolution mechanism. 14074 14075Code and Data Size: Current core subsystem library sizes are shown 14076below. These are the code and data sizes for the acpica.lib 14077produced by the Microsoft Visual C++ 6.0 compiler, and these 14078values do not include any ACPI driver or OSPM code. The debug 14079version of the code includes the debug output trace mechanism and 14080has a larger code and data size. Note that these values will vary 14081depending on the efficiency of the compiler and the compiler 14082options used during generation. 14083 14084 Previous Release 14085 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14086 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14087 Current Release: 14088 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 14089 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 14090 14091 140922) Linux 14093 14094Initialize thermal driver's timer before it is used. (Knut 14095Neumann) 14096 14097Allow handling negative celsius values. (Kochi Takayoshi) 14098 14099Fix thermal management and make trip points. R/W (Pavel Machek) 14100 14101Fix /proc/acpi/sleep. (P. Christeas) 14102 14103IA64 fixes. (David Mosberger) 14104 14105Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 14106 14107Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 14108Brodowski) 14109 14110 141113) iASL Compiler/Disassembler 14112 14113Clarified some warning/error messages. 14114 14115 14116---------------------------------------- 1411718 September 2002. Summary of changes for this release. 14118 14119 141201) ACPI CA Core Subsystem version 20020918: 14121 14122Fixed a reported problem with reference chaining (via the Index() 14123and RefOf() operators) in the ObjectType() and SizeOf() operators. 14124The definition of these operators includes the dereferencing of 14125all chained references to return information on the base object. 14126 14127Fixed a problem with stores to indexed package elements - the 14128existing code would not complete the store if an "implicit 14129conversion" was not performed. In other words, if the existing 14130object (package element) was to be replaced completely, the code 14131didn't handle this case. 14132 14133Relaxed typechecking on the ASL "Scope" operator to allow the 14134target name to refer to an object of type Integer, String, or 14135Buffer, in addition to the scoping object types (Device, 14136predefined Scopes, Processor, PowerResource, and ThermalZone.) 14137This allows existing AML code that has workarounds for a bug in 14138Windows to function properly. A warning is issued, however. This 14139affects both the AML interpreter and the iASL compiler. Below is 14140an example of this type of ASL code: 14141 14142 Name(DEB,0x00) 14143 Scope(DEB) 14144 { 14145 14146Fixed some reported problems with 64-bit integer support in the 14147local implementation of C library functions (clib.c) 14148 14149 141502) Linux 14151 14152Use ACPI fix map region instead of IOAPIC region, since it is 14153undefined in non-SMP. 14154 14155Ensure that the SCI has the proper polarity and trigger, even on 14156systems that do not have an interrupt override entry in the MADT. 14157 141582.5 big driver reorganization (Pat Mochel) 14159 14160Use early table mapping code from acpitable.c (Andi Kleen) 14161 14162New blacklist entries (Andi Kleen) 14163 14164Blacklist improvements. Split blacklist code out into a separate 14165file. Move checking the blacklist to very early. Previously, we 14166would use ACPI tables, and then halfway through init, check the 14167blacklist -- too late. Now, it's early enough to completely fall- 14168back to non-ACPI. 14169 14170 141713) iASL Compiler/Disassembler version 20020918: 14172 14173Fixed a problem where the typechecking code didn't know that an 14174alias could point to a method. In other words, aliases were not 14175being dereferenced during typechecking. 14176 14177 14178---------------------------------------- 1417929 August 2002. Summary of changes for this release. 14180 141811) ACPI CA Core Subsystem Version 20020829: 14182 14183If the target of a Scope() operator already exists, it must be an 14184object type that actually opens a scope -- such as a Device, 14185Method, Scope, etc. This is a fatal runtime error. Similar error 14186check has been added to the iASL compiler also. 14187 14188Tightened up the namespace load to disallow multiple names in the 14189same scope. This previously was allowed if both objects were of 14190the same type. (i.e., a lookup was the same as entering a new 14191name). 14192 14193 141942) Linux 14195 14196Ensure that the ACPI interrupt has the proper trigger and 14197polarity. 14198 14199local_irq_disable is extraneous. (Matthew Wilcox) 14200 14201Make "acpi=off" actually do what it says, and not use the ACPI 14202interpreter *or* the tables. 14203 14204Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 14205Takayoshi) 14206 14207 142083) iASL Compiler/Disassembler Version 20020829: 14209 14210Implemented namepath optimization for name declarations. For 14211example, a declaration like "Method (\_SB_.ABCD)" would get 14212optimized to "Method (ABCD)" if the declaration is within the 14213\_SB_ scope. This optimization is in addition to the named 14214reference path optimization first released in the previous 14215version. This would seem to complete all possible optimizations 14216for namepaths within the ASL/AML. 14217 14218If the target of a Scope() operator already exists, it must be an 14219object type that actually opens a scope -- such as a Device, 14220Method, Scope, etc. 14221 14222Implemented a check and warning for unreachable code in the same 14223block below a Return() statement. 14224 14225Fixed a problem where the listing file was not generated if the 14226compiler aborted if the maximum error count was exceeded (200). 14227 14228Fixed a problem where the typechecking of method return values was 14229broken. This includes the check for a return value when the 14230method is invoked as a TermArg (a return value is expected.) 14231 14232Fixed a reported problem where EOF conditions during a quoted 14233string or comment caused a fault. 14234 14235 14236---------------------------------------- 1423715 August 2002. Summary of changes for this release. 14238 142391) ACPI CA Core Subsystem Version 20020815: 14240 14241Fixed a reported problem where a Store to a method argument that 14242contains a reference did not perform the indirect store correctly. 14243This problem was created during the conversion to the new 14244reference object model - the indirect store to a method argument 14245code was not updated to reflect the new model. 14246 14247Reworked the ACPI mode change code to better conform to ACPI 2.0, 14248handle corner cases, and improve code legibility (Kochi Takayoshi) 14249 14250Fixed a problem with the pathname parsing for the carat (^) 14251prefix. The heavy use of the carat operator by the new namepath 14252optimization in the iASL compiler uncovered a problem with the AML 14253interpreter handling of this prefix. In the case where one or 14254more carats precede a single nameseg, the nameseg was treated as 14255standalone and the search rule (to root) was inadvertently 14256applied. This could cause both the iASL compiler and the 14257interpreter to find the wrong object or to miss the error that 14258should occur if the object does not exist at that exact pathname. 14259 14260Found and fixed the problem where the HP Pavilion DSDT would not 14261load. This was a relatively minor tweak to the table loading code 14262(a problem caused by the unexpected encounter with a method 14263invocation not within a control method), but it does not solve the 14264overall issue of the execution of AML code at the table level. 14265This investigation is still ongoing. 14266 14267Code and Data Size: Current core subsystem library sizes are shown 14268below. These are the code and data sizes for the acpica.lib 14269produced by the Microsoft Visual C++ 6.0 compiler, and these 14270values do not include any ACPI driver or OSPM code. The debug 14271version of the code includes the debug output trace mechanism and 14272has a larger code and data size. Note that these values will vary 14273depending on the efficiency of the compiler and the compiler 14274options used during generation. 14275 14276 Previous Release 14277 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14278 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14279 Current Release: 14280 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 14281 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 14282 14283 142842) Linux 14285 14286Remove redundant slab.h include (Brad Hards) 14287 14288Fix several bugs in thermal.c (Herbert Nachtnebel) 14289 14290Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 14291 14292Change acpi_system_suspend to use updated irq functions (Pavel 14293Machek) 14294 14295Export acpi_get_firmware_table (Matthew Wilcox) 14296 14297Use proper root proc entry for ACPI (Kochi Takayoshi) 14298 14299Fix early-boot table parsing (Bjorn Helgaas) 14300 14301 143023) iASL Compiler/Disassembler 14303 14304Reworked the compiler options to make them more consistent and to 14305use two-letter options where appropriate. We were running out of 14306sensible letters. This may break some makefiles, so check the 14307current options list by invoking the compiler with no parameters. 14308 14309Completed the design and implementation of the ASL namepath 14310optimization option for the compiler. This option optimizes all 14311references to named objects to the shortest possible path. The 14312first attempt tries to utilize a single nameseg (4 characters) and 14313the "search-to-root" algorithm used by the interpreter. If that 14314cannot be used (because either the name is not in the search path 14315or there is a conflict with another object with the same name), 14316the pathname is optimized using the carat prefix (usually a 14317shorter string than specifying the entire path from the root.) 14318 14319Implemented support to obtain the DSDT from the Windows registry 14320(when the disassembly option is specified with no input file). 14321Added this code as the implementation for AcpiOsTableOverride in 14322the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 14323utility) to scan memory for the DSDT to the AcpiOsTableOverride 14324function in the DOS OSL to make the disassembler truly OS 14325independent. 14326 14327Implemented a new option to disassemble and compile in one step. 14328When used without an input filename, this option will grab the 14329DSDT from the local machine, disassemble it, and compile it in one 14330step. 14331 14332Added a warning message for invalid escapes (a backslash followed 14333by any character other than the allowable escapes). This catches 14334the quoted string error "\_SB_" (which should be "\\_SB_" ). 14335 14336Also, there are numerous instances in the ACPI specification where 14337this error occurs. 14338 14339Added a compiler option to disable all optimizations. This is 14340basically the "compatibility mode" because by using this option, 14341the AML code will come out exactly the same as other ASL 14342compilers. 14343 14344Added error messages for incorrectly ordered dependent resource 14345functions. This includes: missing EndDependentFn macro at end of 14346dependent resource list, nested dependent function macros (both 14347start and end), and missing StartDependentFn macro. These are 14348common errors that should be caught at compile time. 14349 14350Implemented _OSI support for the disassembler and compiler. _OSI 14351must be included in the namespace for proper disassembly (because 14352the disassembler must know the number of arguments.) 14353 14354Added an "optimization" message type that is optional (off by 14355default). This message is used for all optimizations - including 14356constant folding, integer optimization, and namepath optimization. 14357 14358---------------------------------------- 1435925 July 2002. Summary of changes for this release. 14360 14361 143621) ACPI CA Core Subsystem Version 20020725: 14363 14364The AML Disassembler has been enhanced to produce compilable ASL 14365code and has been integrated into the iASL compiler (see below) as 14366well as the single-step disassembly for the AML debugger and the 14367disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 14368resource templates and macros are fully supported. The 14369disassembler has been tested on over 30 different AML files, 14370producing identical AML when the resulting disassembled ASL file 14371is recompiled with the same ASL compiler. 14372 14373Modified the Resource Manager to allow zero interrupts and zero 14374dma channels during the GetCurrentResources call. This was 14375causing problems on some platforms. 14376 14377Added the AcpiOsRedirectOutput interface to the OSL to simplify 14378output redirection for the AcpiOsPrintf and AcpiOsVprintf 14379interfaces. 14380 14381Code and Data Size: Current core subsystem library sizes are shown 14382below. These are the code and data sizes for the acpica.lib 14383produced by the Microsoft Visual C++ 6.0 compiler, and these 14384values do not include any ACPI driver or OSPM code. The debug 14385version of the code includes the debug output trace mechanism and 14386has a larger code and data size. Note that these values will vary 14387depending on the efficiency of the compiler and the compiler 14388options used during generation. 14389 14390 Previous Release 14391 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14392 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14393 Current Release: 14394 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 14395 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 14396 14397 143982) Linux 14399 14400Fixed a panic in the EC driver (Dominik Brodowski) 14401 14402Implemented checksum of the R/XSDT itself during Linux table scan 14403(Richard Schaal) 14404 14405 144063) iASL compiler 14407 14408The AML disassembler is integrated into the compiler. The "-d" 14409option invokes the disassembler to completely disassemble an 14410input AML file, producing as output a text ASL file with the 14411extension ".dsl" (to avoid name collisions with existing .asl 14412source files.) A future enhancement will allow the disassembler 14413to obtain the BIOS DSDT from the registry under Windows. 14414 14415Fixed a problem with the VendorShort and VendorLong resource 14416descriptors where an invalid AML sequence was created. 14417 14418Implemented a fix for BufferData term in the ASL parser. It was 14419inadvertently defined twice, allowing invalid syntax to pass and 14420causing reduction conflicts. 14421 14422Fixed a problem where the Ones opcode could get converted to a 14423value of zero if "Ones" was used where a byte, word or dword value 14424was expected. The 64-bit value is now truncated to the correct 14425size with the correct value. 14426 14427 14428 14429---------------------------------------- 1443002 July 2002. Summary of changes for this release. 14431 14432 144331) ACPI CA Core Subsystem Version 20020702: 14434 14435The Table Manager code has been restructured to add several new 14436features. Tables that are not required by the core subsystem 14437(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 14438validated in any way and are returned from AcpiGetFirmwareTable if 14439requested. The AcpiOsTableOverride interface is now called for 14440each table that is loaded by the subsystem in order to allow the 14441host to override any table it chooses. Previously, only the DSDT 14442could be overridden. Added one new files, tbrsdt.c and 14443tbgetall.c. 14444 14445Fixed a problem with the conversion of internal package objects to 14446external objects (when a package is returned from a control 14447method.) The return buffer length was set to zero instead of the 14448proper length of the package object. 14449 14450Fixed a reported problem with the use of the RefOf and DeRefOf 14451operators when passing reference arguments to control methods. A 14452new type of Reference object is used internally for references 14453produced by the RefOf operator. 14454 14455Added additional error messages in the Resource Manager to explain 14456AE_BAD_DATA errors when they occur during resource parsing. 14457 14458Split the AcpiEnableSubsystem into two primitives to enable a 14459finer granularity initialization sequence. These two calls should 14460be called in this order: AcpiEnableSubsystem (flags), 14461AcpiInitializeObjects (flags). The flags parameter remains the 14462same. 14463 14464 144652) Linux 14466 14467Updated the ACPI utilities module to understand the new style of 14468fully resolved package objects that are now returned from the core 14469subsystem. This eliminates errors of the form: 14470 14471 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 14472 acpi_utils-0430 [145] acpi_evaluate_reference: 14473 Invalid element in package (not a device reference) 14474 14475The method evaluation utility uses the new buffer allocation 14476scheme instead of calling AcpiEvaluate Object twice. 14477 14478Added support for ECDT. This allows the use of the Embedded 14479 14480Controller before the namespace has been fully initialized, which 14481is necessary for ACPI 2.0 support, and for some laptops to 14482initialize properly. (Laptops using ECDT are still rare, so only 14483limited testing was performed of the added functionality.) 14484 14485Fixed memory leaks in the EC driver. 14486 14487Eliminated a brittle code structure in acpi_bus_init(). 14488 14489Eliminated the acpi_evaluate() helper function in utils.c. It is 14490no longer needed since acpi_evaluate_object can optionally 14491allocate memory for the return object. 14492 14493Implemented fix for keyboard hang when getting battery readings on 14494some systems (Stephen White) 14495 14496PCI IRQ routing update (Dominik Brodowski) 14497 14498Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 14499support 14500 14501---------------------------------------- 1450211 June 2002. Summary of changes for this release. 14503 14504 145051) ACPI CA Core Subsystem Version 20020611: 14506 14507Fixed a reported problem where constants such as Zero and One 14508appearing within _PRT packages were not handled correctly within 14509the resource manager code. Originally reported against the ASL 14510compiler because the code generator now optimizes integers to 14511their minimal AML representation (i.e. AML constants if possible.) 14512The _PRT code now handles all AML constant opcodes correctly 14513(Zero, One, Ones, Revision). 14514 14515Fixed a problem with the Concatenate operator in the AML 14516interpreter where a buffer result object was incorrectly marked as 14517not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 14518 14519All package sub-objects are now fully resolved before they are 14520returned from the external ACPI interfaces. This means that name 14521strings are resolved to object handles, and constant operators 14522(Zero, One, Ones, Revision) are resolved to Integers. 14523 14524Implemented immediate resolution of the AML Constant opcodes 14525(Zero, One, Ones, Revision) to Integer objects upon detection 14526within the AML stream. This has simplified and reduced the 14527generated code size of the subsystem by eliminating about 10 14528switch statements for these constants (which previously were 14529contained in Reference objects.) The complicating issues are that 14530the Zero opcode is used as a "placeholder" for unspecified 14531optional target operands and stores to constants are defined to be 14532no-ops. 14533 14534Code and Data Size: Current core subsystem library sizes are shown 14535below. These are the code and data sizes for the acpica.lib 14536produced by the Microsoft Visual C++ 6.0 compiler, and these 14537values do not include any ACPI driver or OSPM code. The debug 14538version of the code includes the debug output trace mechanism and 14539has a larger code and data size. Note that these values will vary 14540depending on the efficiency of the compiler and the compiler 14541options used during generation. 14542 14543 Previous Release 14544 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14545 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14546 Current Release: 14547 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 14548 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 14549 14550 145512) Linux 14552 14553 14554Added preliminary support for obtaining _TRA data for PCI root 14555bridges (Bjorn Helgaas). 14556 14557 145583) iASL Compiler Version X2046: 14559 14560Fixed a problem where the "_DDN" reserved name was defined to be a 14561control method with one argument. There are no arguments, and 14562_DDN does not have to be a control method. 14563 14564Fixed a problem with the Linux version of the compiler where the 14565source lines printed with error messages were the wrong lines. 14566This turned out to be the "LF versus CR/LF" difference between 14567Windows and Unix. This appears to be the longstanding issue 14568concerning listing output and error messages. 14569 14570Fixed a problem with the Linux version of compiler where opcode 14571names within error messages were wrong. This was caused by a 14572slight difference in the output of the Flex tool on Linux versus 14573Windows. 14574 14575Fixed a problem with the Linux compiler where the hex output files 14576contained some garbage data caused by an internal buffer overrun. 14577 14578 14579---------------------------------------- 1458017 May 2002. Summary of changes for this release. 14581 14582 145831) ACPI CA Core Subsystem Version 20020517: 14584 14585Implemented a workaround to an BIOS bug discovered on the HP 14586OmniBook where the FADT revision number and the table size are 14587inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 14588behavior is to fallback to using only the ACPI 1.0 fields of the 14589FADT if the table is too small to be a ACPI 2.0 table as claimed 14590by the revision number. Although this is a BIOS bug, this is a 14591case where the workaround is simple enough and with no side 14592effects, so it seemed prudent to add it. A warning message is 14593issued, however. 14594 14595Implemented minimum size checks for the fixed-length ACPI tables - 14596- the FADT and FACS, as well as consistency checks between the 14597revision number and the table size. 14598 14599Fixed a reported problem in the table override support where the 14600new table pointer was incorrectly treated as a physical address 14601instead of a logical address. 14602 14603Eliminated the use of the AE_AML_ERROR exception and replaced it 14604with more descriptive codes. 14605 14606Fixed a problem where an exception would occur if an ASL Field was 14607defined with no named Field Units underneath it (used by some 14608index fields). 14609 14610Code and Data Size: Current core subsystem library sizes are shown 14611below. These are the code and data sizes for the acpica.lib 14612produced by the Microsoft Visual C++ 6.0 compiler, and these 14613values do not include any ACPI driver or OSPM code. The debug 14614version of the code includes the debug output trace mechanism and 14615has a larger code and data size. Note that these values will vary 14616depending on the efficiency of the compiler and the compiler 14617options used during generation. 14618 14619 Previous Release 14620 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14621 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14622 Current Release: 14623 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 14624 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 14625 14626 14627 146282) Linux 14629 14630Much work done on ACPI init (MADT and PCI IRQ routing support). 14631(Paul D. and Dominik Brodowski) 14632 14633Fix PCI IRQ-related panic on boot (Sam Revitch) 14634 14635Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 14636 14637Fix "MHz" typo (Dominik Brodowski) 14638 14639Fix RTC year 2000 issue (Dominik Brodowski) 14640 14641Preclude multiple button proc entries (Eric Brunet) 14642 14643Moved arch-specific code out of include/platform/aclinux.h 14644 146453) iASL Compiler Version X2044: 14646 14647Implemented error checking for the string used in the EISAID macro 14648(Usually used in the definition of the _HID object.) The code now 14649strictly enforces the PnP format - exactly 7 characters, 3 14650uppercase letters and 4 hex digits. 14651 14652If a raw string is used in the definition of the _HID object 14653(instead of the EISAID macro), the string must contain all 14654alphanumeric characters (e.g., "*PNP0011" is not allowed because 14655of the asterisk.) 14656 14657Implemented checking for invalid use of ACPI reserved names for 14658most of the name creation operators (Name, Device, Event, Mutex, 14659OperationRegion, PowerResource, Processor, and ThermalZone.) 14660Previously, this check was only performed for control methods. 14661 14662Implemented an additional check on the Name operator to emit an 14663error if a reserved name that must be implemented in ASL as a 14664control method is used. We know that a reserved name must be a 14665method if it is defined with input arguments. 14666 14667The warning emitted when a namespace object reference is not found 14668during the cross reference phase has been changed into an error. 14669The "External" directive should be used for names defined in other 14670modules. 14671 14672 146734) Tools and Utilities 14674 14675The 16-bit tools (adump16 and aexec16) have been regenerated and 14676tested. 14677 14678Fixed a problem with the output of both acpidump and adump16 where 14679the indentation of closing parentheses and brackets was not 14680 14681aligned properly with the parent block. 14682 14683 14684---------------------------------------- 1468503 May 2002. Summary of changes for this release. 14686 14687 146881) ACPI CA Core Subsystem Version 20020503: 14689 14690Added support a new OSL interface that allows the host operating 14691 14692system software to override the DSDT found in the firmware - 14693AcpiOsTableOverride. With this interface, the OSL can examine the 14694version of the firmware DSDT and replace it with a different one 14695if desired. 14696 14697Added new external interfaces for accessing ACPI registers from 14698device drivers and other system software - AcpiGetRegister and 14699AcpiSetRegister. This was simply an externalization of the 14700existing AcpiHwBitRegister interfaces. 14701 14702Fixed a regression introduced in the previous build where the 14703ASL/AML CreateField operator always returned an error, 14704"destination must be a NS Node". 14705 14706Extended the maximum time (before failure) to successfully enable 14707ACPI mode to 3 seconds. 14708 14709Code and Data Size: Current core subsystem library sizes are shown 14710below. These are the code and data sizes for the acpica.lib 14711produced by the Microsoft Visual C++ 6.0 compiler, and these 14712values do not include any ACPI driver or OSPM code. The debug 14713version of the code includes the debug output trace mechanism and 14714has a larger code and data size. Note that these values will vary 14715depending on the efficiency of the compiler and the compiler 14716options used during generation. 14717 14718 Previous Release 14719 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14720 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14721 Current Release: 14722 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 14723 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 14724 14725 147262) Linux 14727 14728Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 14729free. While 3 out of 4 of our in-house systems work fine, the last 14730one still hangs when testing the LAPIC timer. 14731 14732Renamed many files in 2.5 kernel release to omit "acpi_" from the 14733name. 14734 14735Added warning on boot for Presario 711FR. 14736 14737Sleep improvements (Pavel Machek) 14738 14739ACPI can now be built without CONFIG_PCI enabled. 14740 14741IA64: Fixed memory map functions (JI Lee) 14742 14743 147443) iASL Compiler Version X2043: 14745 14746Added support to allow the compiler to be integrated into the MS 14747VC++ development environment for one-button compilation of single 14748files or entire projects -- with error-to-source-line mapping. 14749 14750Implemented support for compile-time constant folding for the 14751Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 14752specification. This allows the ASL writer to use expressions 14753instead of Integer/Buffer/String constants in terms that must 14754evaluate to constants at compile time and will also simplify the 14755emitted AML in any such sub-expressions that can be folded 14756(evaluated at compile-time.) This increases the size of the 14757compiler significantly because a portion of the ACPI CA AML 14758interpreter is included within the compiler in order to pre- 14759evaluate constant expressions. 14760 14761 14762Fixed a problem with the "Unicode" ASL macro that caused the 14763compiler to fault. (This macro is used in conjunction with the 14764_STR reserved name.) 14765 14766Implemented an AML opcode optimization to use the Zero, One, and 14767Ones opcodes where possible to further reduce the size of integer 14768constants and thus reduce the overall size of the generated AML 14769code. 14770 14771Implemented error checking for new reserved terms for ACPI version 147722.0A. 14773 14774Implemented the -qr option to display the current list of ACPI 14775reserved names known to the compiler. 14776 14777Implemented the -qc option to display the current list of ASL 14778operators that are allowed within constant expressions and can 14779therefore be folded at compile time if the operands are constants. 14780 14781 147824) Documentation 14783 14784Updated the Programmer's Reference for new interfaces, data types, 14785and memory allocation model options. 14786 14787Updated the iASL Compiler User Reference to apply new format and 14788add information about new features and options. 14789 14790---------------------------------------- 1479119 April 2002. Summary of changes for this release. 14792 147931) ACPI CA Core Subsystem Version 20020419: 14794 14795The source code base for the Core Subsystem has been completely 14796cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 14797versions. The Lint option files used are included in the 14798/acpi/generate/lint directory. 14799 14800Implemented enhanced status/error checking across the entire 14801Hardware manager subsystem. Any hardware errors (reported from 14802the OSL) are now bubbled up and will abort a running control 14803method. 14804 14805 14806Fixed a problem where the per-ACPI-table integer width (32 or 64) 14807was stored only with control method nodes, causing a fault when 14808non-control method code was executed during table loading. The 14809solution implemented uses a global variable to indicate table 14810width across the entire ACPI subsystem. Therefore, ACPI CA does 14811not support mixed integer widths across different ACPI tables 14812(DSDT, SSDT). 14813 14814Fixed a problem where NULL extended fields (X fields) in an ACPI 148152.0 ACPI FADT caused the table load to fail. Although the 14816existing ACPI specification is a bit fuzzy on this topic, the new 14817behavior is to fall back on a ACPI 1.0 field if the corresponding 14818ACPI 2.0 X field is zero (even though the table revision indicates 14819a full ACPI 2.0 table.) The ACPI specification will be updated to 14820clarify this issue. 14821 14822Fixed a problem with the SystemMemory operation region handler 14823where memory was always accessed byte-wise even if the AML- 14824specified access width was larger than a byte. This caused 14825problems on systems with memory-mapped I/O. Memory is now 14826accessed with the width specified. On systems that do not support 14827non-aligned transfers, a check is made to guarantee proper address 14828alignment before proceeding in order to avoid an AML-caused 14829alignment fault within the kernel. 14830 14831 14832Fixed a problem with the ExtendedIrq resource where only one byte 14833of the 4-byte Irq field was extracted. 14834 14835Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 14836function was out of date and required a rewrite. 14837 14838Code and Data Size: Current core subsystem library sizes are shown 14839below. These are the code and data sizes for the acpica.lib 14840produced by the Microsoft Visual C++ 6.0 compiler, and these 14841values do not include any ACPI driver or OSPM code. The debug 14842version of the code includes the debug output trace mechanism and 14843has a larger code and data size. Note that these values will vary 14844depending on the efficiency of the compiler and the compiler 14845options used during generation. 14846 14847 Previous Release 14848 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14849 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14850 Current Release: 14851 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14852 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14853 14854 148552) Linux 14856 14857PCI IRQ routing fixes (Dominik Brodowski) 14858 14859 148603) iASL Compiler Version X2042: 14861 14862Implemented an additional compile-time error check for a field 14863unit whose size + minimum access width would cause a run-time 14864access beyond the end-of-region. Previously, only the field size 14865itself was checked. 14866 14867The Core subsystem and iASL compiler now share a common parse 14868object in preparation for compile-time evaluation of the type 148693/4/5 ASL operators. 14870 14871 14872---------------------------------------- 14873Summary of changes for this release: 03_29_02 14874 148751) ACPI CA Core Subsystem Version 20020329: 14876 14877Implemented support for late evaluation of TermArg operands to 14878Buffer and Package objects. This allows complex expressions to be 14879used in the declarations of these object types. 14880 14881Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 148821.0, if the field was larger than 32 bits, it was returned as a 14883buffer - otherwise it was returned as an integer. In ACPI 2.0, 14884the field is returned as a buffer only if the field is larger than 1488564 bits. The TableRevision is now considered when making this 14886conversion to avoid incompatibility with existing ASL code. 14887 14888Implemented logical addressing for AcpiOsGetRootPointer. This 14889allows an RSDP with either a logical or physical address. With 14890this support, the host OS can now override all ACPI tables with 14891one logical RSDP. Includes implementation of "typed" pointer 14892support to allow a common data type for both physical and logical 14893pointers internally. This required a change to the 14894AcpiOsGetRootPointer interface. 14895 14896Implemented the use of ACPI 2.0 Generic Address Structures for all 14897GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 14898mapped I/O for these ACPI features. 14899 14900Initialization now ignores not only non-required tables (All 14901tables other than the FADT, FACS, DSDT, and SSDTs), but also does 14902not validate the table headers of unrecognized tables. 14903 14904Fixed a problem where a notify handler could only be 14905installed/removed on an object of type Device. All "notify" 14906 14907objects are now supported -- Devices, Processor, Power, and 14908Thermal. 14909 14910Removed most verbosity from the ACPI_DB_INFO debug level. Only 14911critical information is returned when this debug level is enabled. 14912 14913Code and Data Size: Current core subsystem library sizes are shown 14914below. These are the code and data sizes for the acpica.lib 14915produced by the Microsoft Visual C++ 6.0 compiler, and these 14916values do not include any ACPI driver or OSPM code. The debug 14917version of the code includes the debug output trace mechanism and 14918has a larger code and data size. Note that these values will vary 14919depending on the efficiency of the compiler and the compiler 14920options used during generation. 14921 14922 Previous Release 14923 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14924 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14925 Current Release: 14926 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14927 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14928 14929 149302) Linux: 14931 14932The processor driver (acpi_processor.c) now fully supports ACPI 149332.0-based processor performance control (e.g. Intel(R) 14934SpeedStep(TM) technology) Note that older laptops that only have 14935the Intel "applet" interface are not supported through this. The 14936'limit' and 'performance' interface (/proc) are fully functional. 14937[Note that basic policy for controlling performance state 14938transitions will be included in the next version of ospmd.] The 14939idle handler was modified to more aggressively use C2, and PIIX4 14940errata handling underwent a complete overhaul (big thanks to 14941Dominik Brodowski). 14942 14943Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 14944based devices in the ACPI namespace are now dynamically bound 14945(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 14946This allows, among other things, ACPI to resolve bus numbers for 14947subordinate PCI bridges. 14948 14949Enhanced PCI IRQ routing to get the proper bus number for _PRT 14950entries defined underneath PCI bridges. 14951 14952Added IBM 600E to bad bios list due to invalid _ADR value for 14953PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 14954 14955In the process of adding full MADT support (e.g. IOAPIC) for IA32 14956(acpi.c, mpparse.c) -- stay tuned. 14957 14958Added back visual differentiation between fixed-feature and 14959control-method buttons in dmesg. Buttons are also subtyped (e.g. 14960button/power/PWRF) to simplify button identification. 14961 14962We no longer use -Wno-unused when compiling debug. Please ignore 14963any "_THIS_MODULE defined but not used" messages. 14964 14965Can now shut down the system using "magic sysrq" key. 14966 14967 149683) iASL Compiler version 2041: 14969 14970Fixed a problem where conversion errors for hex/octal/decimal 14971constants were not reported. 14972 14973Implemented a fix for the General Register template Address field. 14974This field was 8 bits when it should be 64. 14975 14976Fixed a problem where errors/warnings were no longer being emitted 14977within the listing output file. 14978 14979Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 14980exactly 4 characters, alphanumeric only. 14981 14982 14983 14984 14985---------------------------------------- 14986Summary of changes for this release: 03_08_02 14987 14988 149891) ACPI CA Core Subsystem Version 20020308: 14990 14991Fixed a problem with AML Fields where the use of the "AccessAny" 14992keyword could cause an interpreter error due to attempting to read 14993or write beyond the end of the parent Operation Region. 14994 14995Fixed a problem in the SystemMemory Operation Region handler where 14996an attempt was made to map memory beyond the end of the region. 14997This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 14998errors on some Linux systems. 14999 15000Fixed a problem where the interpreter/namespace "search to root" 15001algorithm was not functioning for some object types. Relaxed the 15002internal restriction on the search to allow upsearches for all 15003external object types as well as most internal types. 15004 15005 150062) Linux: 15007 15008We now use safe_halt() macro versus individual calls to sti | hlt. 15009 15010Writing to the processor limit interface should now work. "echo 1" 15011will increase the limit, 2 will decrease, and 0 will reset to the 15012 15013default. 15014 15015 150163) ASL compiler: 15017 15018Fixed segfault on Linux version. 15019 15020 15021---------------------------------------- 15022Summary of changes for this release: 02_25_02 15023 150241) ACPI CA Core Subsystem: 15025 15026 15027Fixed a problem where the GPE bit masks were not initialized 15028properly, causing erratic GPE behavior. 15029 15030Implemented limited support for multiple calling conventions. The 15031code can be generated with either the VPL (variable parameter 15032list, or "C") convention, or the FPL (fixed parameter list, or 15033"Pascal") convention. The core subsystem is about 3.4% smaller 15034when generated with FPL. 15035 15036 150372) Linux 15038 15039Re-add some /proc/acpi/event functionality that was lost during 15040the rewrite 15041 15042Resolved issue with /proc events for fixed-feature buttons showing 15043up as the system device. 15044 15045Fixed checks on C2/C3 latencies to be inclusive of maximum values. 15046 15047Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 15048 15049Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 15050 15051Fixed limit interface & usage to fix bugs with passive cooling 15052hysterisis. 15053 15054Restructured PRT support. 15055 15056 15057---------------------------------------- 15058Summary of changes for this label: 02_14_02 15059 15060 150611) ACPI CA Core Subsystem: 15062 15063Implemented support in AcpiLoadTable to allow loading of FACS and 15064FADT tables. 15065 15066Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 15067been removed. All 64-bit platforms should be migrated to the ACPI 150682.0 tables. The actbl71.h header has been removed from the source 15069tree. 15070 15071All C macros defined within the subsystem have been prefixed with 15072"ACPI_" to avoid collision with other system include files. 15073 15074Removed the return value for the two AcpiOsPrint interfaces, since 15075it is never used and causes lint warnings for ignoring the return 15076value. 15077 15078Added error checking to all internal mutex acquire and release 15079calls. Although a failure from one of these interfaces is 15080probably a fatal system error, these checks will cause the 15081immediate abort of the currently executing method or interface. 15082 15083Fixed a problem where the AcpiSetCurrentResources interface could 15084fault. This was a side effect of the deployment of the new memory 15085allocation model. 15086 15087Fixed a couple of problems with the Global Lock support introduced 15088in the last major build. The "common" (1.0/2.0) internal FACS was 15089being overwritten with the FACS signature and clobbering the 15090Global Lock pointer. Also, the actual firmware FACS was being 15091unmapped after construction of the "common" FACS, preventing 15092access to the actual Global Lock field within it. The "common" 15093internal FACS is no longer installed as an actual ACPI table; it 15094is used simply as a global. 15095 15096Code and Data Size: Current core subsystem library sizes are shown 15097below. These are the code and data sizes for the acpica.lib 15098produced by the Microsoft Visual C++ 6.0 compiler, and these 15099values do not include any ACPI driver or OSPM code. The debug 15100version of the code includes the debug output trace mechanism and 15101has a larger code and data size. Note that these values will vary 15102depending on the efficiency of the compiler and the compiler 15103options used during generation. 15104 15105 Previous Release (02_07_01) 15106 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15107 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15108 Current Release: 15109 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 15110 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 15111 15112 151132) Linux 15114 15115Updated Linux-specific code for core macro and OSL interface 15116changes described above. 15117 15118Improved /proc/acpi/event. It now can be opened only once and has 15119proper poll functionality. 15120 15121Fixed and restructured power management (acpi_bus). 15122 15123Only create /proc "view by type" when devices of that class exist. 15124 15125Fixed "charging/discharging" bug (and others) in acpi_battery. 15126 15127Improved thermal zone code. 15128 15129 151303) ASL Compiler, version X2039: 15131 15132 15133Implemented the new compiler restriction on ASL String hex/octal 15134escapes to non-null, ASCII values. An error results if an invalid 15135value is used. (This will require an ACPI 2.0 specification 15136change.) 15137 15138AML object labels that are output to the optional C and ASM source 15139are now prefixed with both the ACPI table signature and table ID 15140to help guarantee uniqueness within a large BIOS project. 15141 15142 15143---------------------------------------- 15144Summary of changes for this label: 02_01_02 15145 151461) ACPI CA Core Subsystem: 15147 15148ACPI 2.0 support is complete in the entire Core Subsystem and the 15149ASL compiler. All new ACPI 2.0 operators are implemented and all 15150other changes for ACPI 2.0 support are complete. With 15151simultaneous code and data optimizations throughout the subsystem, 15152ACPI 2.0 support has been implemented with almost no additional 15153cost in terms of code and data size. 15154 15155Implemented a new mechanism for allocation of return buffers. If 15156the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 15157be allocated on behalf of the caller. Consolidated all return 15158buffer validation and allocation to a common procedure. Return 15159buffers will be allocated via the primary OSL allocation interface 15160since it appears that a separate pool is not needed by most users. 15161If a separate pool is required for these buffers, the caller can 15162still use the original mechanism and pre-allocate the buffer(s). 15163 15164Implemented support for string operands within the DerefOf 15165operator. 15166 15167Restructured the Hardware and Event managers to be table driven, 15168simplifying the source code and reducing the amount of generated 15169code. 15170 15171Split the common read/write low-level ACPI register bitfield 15172procedure into a separate read and write, simplifying the code 15173considerably. 15174 15175Obsoleted the AcpiOsCallocate OSL interface. This interface was 15176used only a handful of times and didn't have enough critical mass 15177for a separate interface. Replaced with a common calloc procedure 15178in the core. 15179 15180Fixed a reported problem with the GPE number mapping mechanism 15181that allows GPE1 numbers to be non-contiguous with GPE0. 15182Reorganized the GPE information and shrunk a large array that was 15183originally large enough to hold info for all possible GPEs (256) 15184to simply large enough to hold all GPEs up to the largest GPE 15185number on the machine. 15186 15187Fixed a reported problem with resource structure alignment on 64- 15188bit platforms. 15189 15190Changed the AcpiEnableEvent and AcpiDisableEvent external 15191interfaces to not require any flags for the common case of 15192enabling/disabling a GPE. 15193 15194Implemented support to allow a "Notify" on a Processor object. 15195 15196Most TBDs in comments within the source code have been resolved 15197and eliminated. 15198 15199 15200Fixed a problem in the interpreter where a standalone parent 15201prefix (^) was not handled correctly in the interpreter and 15202debugger. 15203 15204Removed obsolete and unnecessary GPE save/restore code. 15205 15206Implemented Field support in the ASL Load operator. This allows a 15207table to be loaded from a named field, in addition to loading a 15208table directly from an Operation Region. 15209 15210Implemented timeout and handle support in the external Global Lock 15211interfaces. 15212 15213Fixed a problem in the AcpiDump utility where pathnames were no 15214longer being generated correctly during the dump of named objects. 15215 15216Modified the AML debugger to give a full display of if/while 15217predicates instead of just one AML opcode at a time. (The 15218predicate can have several nested ASL statements.) The old method 15219was confusing during single stepping. 15220 15221Code and Data Size: Current core subsystem library sizes are shown 15222below. These are the code and data sizes for the acpica.lib 15223produced by the Microsoft Visual C++ 6.0 compiler, and these 15224values do not include any ACPI driver or OSPM code. The debug 15225version of the code includes the debug output trace mechanism and 15226has a larger code and data size. Note that these values will vary 15227depending on the efficiency of the compiler and the compiler 15228options used during generation. 15229 15230 Previous Release (12_18_01) 15231 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15232 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15233 Current Release: 15234 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 15235 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 15236 152372) Linux 15238 15239 Implemented fix for PIIX reverse throttling errata (Processor 15240driver) 15241 15242Added new Limit interface (Processor and Thermal drivers) 15243 15244New thermal policy (Thermal driver) 15245 15246Many updates to /proc 15247 15248Battery "low" event support (Battery driver) 15249 15250Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 15251 15252IA32 - IA64 initialization unification, no longer experimental 15253 15254Menuconfig options redesigned 15255 152563) ASL Compiler, version X2037: 15257 15258Implemented several new output features to simplify integration of 15259AML code into firmware: 1) Output the AML in C source code with 15260labels for each named ASL object. The original ASL source code 15261is interleaved as C comments. 2) Output the AML in ASM source code 15262with labels and interleaved ASL source. 3) Output the AML in 15263raw hex table form, in either C or ASM. 15264 15265Implemented support for optional string parameters to the 15266LoadTable operator. 15267 15268Completed support for embedded escape sequences within string 15269literals. The compiler now supports all single character escapes 15270as well as the Octal and Hex escapes. Note: the insertion of a 15271null byte into a string literal (via the hex/octal escape) causes 15272the string to be immediately terminated. A warning is issued. 15273 15274Fixed a problem where incorrect AML was generated for the case 15275where an ASL namepath consists of a single parent prefix ( 15276 15277) with no trailing name segments. 15278 15279The compiler has been successfully generated with a 64-bit C 15280compiler. 15281 15282 15283 15284 15285---------------------------------------- 15286Summary of changes for this label: 12_18_01 15287 152881) Linux 15289 15290Enhanced blacklist with reason and severity fields. Any table's 15291signature may now be used to identify a blacklisted system. 15292 15293Call _PIC control method to inform the firmware which interrupt 15294model the OS is using. Turn on any disabled link devices. 15295 15296Cleaned up busmgr /proc error handling (Andreas Dilger) 15297 15298 2) ACPI CA Core Subsystem: 15299 15300Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 15301while loop) 15302 15303Completed implementation of the ACPI 2.0 "Continue", 15304"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 15305operators. All new ACPI 2.0 operators are now implemented in both 15306the ASL compiler and the AML interpreter. The only remaining ACPI 153072.0 task is support for the String data type in the DerefOf 15308operator. Fixed a problem with AcquireMutex where the status code 15309was lost if the caller had to actually wait for the mutex. 15310 15311Increased the maximum ASL Field size from 64K bits to 4G bits. 15312 15313Completed implementation of the external Global Lock interfaces -- 15314AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 15315Handler parameters were added. 15316 15317Completed another pass at removing warnings and issues when 15318compiling with 64-bit compilers. The code now compiles cleanly 15319with the Intel 64-bit C/C++ compiler. Most notably, the pointer 15320add and subtract (diff) macros have changed considerably. 15321 15322 15323Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1532464-bit platforms, 32-bits on all others. This type is used 15325wherever memory allocation and/or the C sizeof() operator is used, 15326and affects the OSL memory allocation interfaces AcpiOsAllocate 15327and AcpiOsCallocate. 15328 15329Implemented sticky user breakpoints in the AML debugger. 15330 15331Code and Data Size: Current core subsystem library sizes are shown 15332below. These are the code and data sizes for the acpica.lib 15333produced by the Microsoft Visual C++ 6.0 compiler, and these 15334values do not include any ACPI driver or OSPM code. The debug 15335version of the code includes the debug output trace mechanism and 15336has a larger code and data size. Note that these values will vary 15337depending on the efficiency of the compiler and the compiler 15338options used during generation. 15339 15340 Previous Release (12_05_01) 15341 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15342 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15343 Current Release: 15344 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 15345 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 15346 15347 3) ASL Compiler, version X2034: 15348 15349Now checks for (and generates an error if detected) the use of a 15350Break or Continue statement without an enclosing While statement. 15351 15352 15353Successfully generated the compiler with the Intel 64-bit C 15354compiler. 15355 15356 ---------------------------------------- 15357Summary of changes for this label: 12_05_01 15358 15359 1) ACPI CA Core Subsystem: 15360 15361The ACPI 2.0 CopyObject operator is fully implemented. This 15362operator creates a new copy of an object (and is also used to 15363bypass the "implicit conversion" mechanism of the Store operator.) 15364 15365The ACPI 2.0 semantics for the SizeOf operator are fully 15366implemented. The change is that performing a SizeOf on a 15367reference object causes an automatic dereference of the object to 15368tha actual value before the size is evaluated. This behavior was 15369undefined in ACPI 1.0. 15370 15371The ACPI 2.0 semantics for the Extended IRQ resource descriptor 15372have been implemented. The interrupt polarity and mode are now 15373independently set. 15374 15375Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 15376appearing in Package objects were not properly converted to 15377integers when the internal Package was converted to an external 15378object (via the AcpiEvaluateObject interface.) 15379 15380Fixed a problem with the namespace object deletion mechanism for 15381objects created by control methods. There were two parts to this 15382problem: 1) Objects created during the initialization phase method 15383parse were not being deleted, and 2) The object owner ID mechanism 15384to track objects was broken. 15385 15386Fixed a problem where the use of the ASL Scope operator within a 15387control method would result in an invalid opcode exception. 15388 15389Fixed a problem introduced in the previous label where the buffer 15390length required for the _PRT structure was not being returned 15391correctly. 15392 15393Code and Data Size: Current core subsystem library sizes are shown 15394below. These are the code and data sizes for the acpica.lib 15395produced by the Microsoft Visual C++ 6.0 compiler, and these 15396values do not include any ACPI driver or OSPM code. The debug 15397version of the code includes the debug output trace mechanism and 15398has a larger code and data size. Note that these values will vary 15399depending on the efficiency of the compiler and the compiler 15400options used during generation. 15401 15402 Previous Release (11_20_01) 15403 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15404 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15405 15406 Current Release: 15407 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 15408 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 15409 15410 2) Linux: 15411 15412Updated all files to apply cleanly against 2.4.16. 15413 15414Added basic PCI Interrupt Routing Table (PRT) support for IA32 15415(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 15416version supports both static and dyanmic PRT entries, but dynamic 15417entries are treated as if they were static (not yet 15418reconfigurable). Architecture- specific code to use this data is 15419absent on IA32 but should be available shortly. 15420 15421Changed the initialization sequence to start the ACPI interpreter 15422(acpi_init) prior to initialization of the PCI driver (pci_init) 15423in init/main.c. This ordering is required to support PRT and 15424facilitate other (future) enhancement. A side effect is that the 15425ACPI bus driver and certain device drivers can no longer be loaded 15426as modules. 15427 15428Modified the 'make menuconfig' options to allow PCI Interrupt 15429Routing support to be included without the ACPI Bus and other 15430device drivers. 15431 15432 3) ASL Compiler, version X2033: 15433 15434Fixed some issues with the use of the new CopyObject and 15435DataTableRegion operators. Both are fully functional. 15436 15437 ---------------------------------------- 15438Summary of changes for this label: 11_20_01 15439 15440 20 November 2001. Summary of changes for this release. 15441 15442 1) ACPI CA Core Subsystem: 15443 15444Updated Index support to match ACPI 2.0 semantics. Storing a 15445Integer, String, or Buffer to an Index of a Buffer will store only 15446the least-significant byte of the source to the Indexed buffer 15447byte. Multiple writes are not performed. 15448 15449Fixed a problem where the access type used in an AccessAs ASL 15450operator was not recorded correctly into the field object. 15451 15452Fixed a problem where ASL Event objects were created in a 15453signalled state. Events are now created in an unsignalled state. 15454 15455The internal object cache is now purged after table loading and 15456initialization to reduce the use of dynamic kernel memory -- on 15457the assumption that object use is greatest during the parse phase 15458of the entire table (versus the run-time use of individual control 15459methods.) 15460 15461ACPI 2.0 variable-length packages are now fully operational. 15462 15463Code and Data Size: Code and Data optimizations have permitted new 15464feature development with an actual reduction in the library size. 15465Current core subsystem library sizes are shown below. These are 15466the code and data sizes for the acpica.lib produced by the 15467Microsoft Visual C++ 6.0 compiler, and these values do not include 15468any ACPI driver or OSPM code. The debug version of the code 15469includes the debug output trace mechanism and has a larger code 15470and data size. Note that these values will vary depending on the 15471efficiency of the compiler and the compiler options used during 15472generation. 15473 15474 Previous Release (11_09_01): 15475 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15476 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15477 15478 Current Release: 15479 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 15480 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 15481 15482 2) Linux: 15483 15484Enhanced the ACPI boot-time initialization code to allow the use 15485of Local APIC tables for processor enumeration on IA-32, and to 15486pave the way for a fully MPS-free boot (on SMP systems) in the 15487near future. This functionality replaces 15488arch/i386/kernel/acpitables.c, which was introduced in an earlier 154892.4.15-preX release. To enable this feature you must add 15490"acpi_boot=on" to the kernel command line -- see the help entry 15491for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 15492the works... 15493 15494Restructured the configuration options to allow boot-time table 15495parsing support without inclusion of the ACPI Interpreter (and 15496other) code. 15497 15498NOTE: This release does not include fixes for the reported events, 15499power-down, and thermal passive cooling issues (coming soon). 15500 15501 3) ASL Compiler: 15502 15503Added additional typechecking for Fields within restricted access 15504Operation Regions. All fields within EC and CMOS regions must be 15505declared with ByteAcc. All fields withing SMBus regions must be 15506declared with the BufferAcc access type. 15507 15508Fixed a problem where the listing file output of control methods 15509no longer interleaved the actual AML code with the ASL source 15510code. 15511 15512 15513 15514 15515---------------------------------------- 15516Summary of changes for this label: 11_09_01 15517 155181) ACPI CA Core Subsystem: 15519 15520Implemented ACPI 2.0-defined support for writes to fields with a 15521Buffer, String, or Integer source operand that is smaller than the 15522target field. In these cases, the source operand is zero-extended 15523to fill the target field. 15524 15525Fixed a problem where a Field starting bit offset (within the 15526parent operation region) was calculated incorrectly if the 15527 15528alignment of the field differed from the access width. This 15529affected CreateWordField, CreateDwordField, CreateQwordField, and 15530possibly other fields that use the "AccessAny" keyword. 15531 15532Fixed a problem introduced in the 11_02_01 release where indirect 15533stores through method arguments did not operate correctly. 15534 155352) Linux: 15536 15537Implemented boot-time ACPI table parsing support 15538(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 15539facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 15540legacy BIOS interfaces (e.g. MPS) for the configuration of system 15541processors, memory, and interrupts during setup_arch(). Note that 15542this patch does not include the required architecture-specific 15543changes required to apply this information -- subsequent patches 15544will be posted for both IA32 and IA64 to achieve this. 15545 15546Added low-level sleep support for IA32 platforms, courtesy of Pat 15547Mochel. This allows IA32 systems to transition to/from various 15548sleeping states (e.g. S1, S3), although the lack of a centralized 15549driver model and power-manageable drivers will prevent its 15550(successful) use on most systems. 15551 15552Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 15553submenu, unified IA32 and IA64 options, added new "Boot using ACPI 15554tables" option, etc. 15555 15556Increased the default timeout for the EC driver from 1ms to 10ms 15557(1000 cycles of 10us) to try to address AE_TIME errors during EC 15558transactions. 15559 15560 ---------------------------------------- 15561Summary of changes for this label: 11_02_01 15562 155631) ACPI CA Core Subsystem: 15564 15565ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 15566(QWordAcc keyword). All ACPI 2.0 64-bit support is now 15567implemented. 15568 15569OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 15570changes to support ACPI 2.0 Qword field access. Read/Write 15571PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 15572accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 15573the value parameter for the address space handler interface is now 15574an ACPI_INTEGER. OSL implementations of these interfaces must now 15575handle the case where the Width parameter is 64. 15576 15577Index Fields: Fixed a problem where unaligned bit assembly and 15578disassembly for IndexFields was not supported correctly. 15579 15580Index and Bank Fields: Nested Index and Bank Fields are now 15581supported. During field access, a check is performed to ensure 15582that the value written to an Index or Bank register is not out of 15583the range of the register. The Index (or Bank) register is 15584written before each access to the field data. Future support will 15585include allowing individual IndexFields to be wider than the 15586DataRegister width. 15587 15588Fields: Fixed a problem where the AML interpreter was incorrectly 15589attempting to write beyond the end of a Field/OpRegion. This was 15590a boundary case that occurred when a DWORD field was written to a 15591BYTE access OpRegion, forcing multiple writes and causing the 15592interpreter to write one datum too many. 15593 15594Fields: Fixed a problem with Field/OpRegion access where the 15595starting bit address of a field was incorrectly calculated if the 15596current access type was wider than a byte (WordAcc, DwordAcc, or 15597QwordAcc). 15598 15599Fields: Fixed a problem where forward references to individual 15600FieldUnits (individual Field names within a Field definition) were 15601not resolved during the AML table load. 15602 15603Fields: Fixed a problem where forward references from a Field 15604definition to the parent Operation Region definition were not 15605resolved during the AML table load. 15606 15607Fields: Duplicate FieldUnit names within a scope are now detected 15608during AML table load. 15609 15610Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 15611returned an incorrect name for the root node. 15612 15613Code and Data Size: Code and Data optimizations have permitted new 15614feature development with an actual reduction in the library size. 15615Current core subsystem library sizes are shown below. These are 15616the code and data sizes for the acpica.lib produced by the 15617Microsoft Visual C++ 6.0 compiler, and these values do not include 15618any ACPI driver or OSPM code. The debug version of the code 15619includes the debug output trace mechanism and has a larger code 15620and data size. Note that these values will vary depending on the 15621efficiency of the compiler and the compiler options used during 15622generation. 15623 15624 Previous Release (10_18_01): 15625 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15626 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15627 15628 Current Release: 15629 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 15630 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 15631 15632 2) Linux: 15633 15634Improved /proc processor output (Pavel Machek) Re-added 15635MODULE_LICENSE("GPL") to all modules. 15636 15637 3) ASL Compiler version X2030: 15638 15639Duplicate FieldUnit names within a scope are now detected and 15640flagged as errors. 15641 15642 4) Documentation: 15643 15644Programmer Reference updated to reflect OSL and address space 15645handler interface changes described above. 15646 15647---------------------------------------- 15648Summary of changes for this label: 10_18_01 15649 15650ACPI CA Core Subsystem: 15651 15652Fixed a problem with the internal object reference count mechanism 15653that occasionally caused premature object deletion. This resolves 15654all of the outstanding problem reports where an object is deleted 15655in the middle of an interpreter evaluation. Although this problem 15656only showed up in rather obscure cases, the solution to the 15657problem involved an adjustment of all reference counts involving 15658objects attached to namespace nodes. 15659 15660Fixed a problem with Field support in the interpreter where 15661writing to an aligned field whose length is an exact multiple (2 15662or greater) of the field access granularity would cause an attempt 15663to write beyond the end of the field. 15664 15665The top level AML opcode execution functions within the 15666interpreter have been renamed with a more meaningful and 15667consistent naming convention. The modules exmonad.c and 15668exdyadic.c were eliminated. New modules are exoparg1.c, 15669exoparg2.c, exoparg3.c, and exoparg6.c. 15670 15671Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 15672 15673Fixed a problem where the AML debugger was causing some internal 15674objects to not be deleted during subsystem termination. 15675 15676Fixed a problem with the external AcpiEvaluateObject interface 15677where the subsystem would fault if the named object to be 15678evaluated refered to a constant such as Zero, Ones, etc. 15679 15680Fixed a problem with IndexFields and BankFields where the 15681subsystem would fault if the index, data, or bank registers were 15682not defined in the same scope as the field itself. 15683 15684Added printf format string checking for compilers that support 15685this feature. Corrected more than 50 instances of issues with 15686format specifiers within invocations of ACPI_DEBUG_PRINT 15687throughout the core subsystem code. 15688 15689The ASL "Revision" operator now returns the ACPI support level 15690implemented in the core - the value "2" since the ACPI 2.0 support 15691is more than 50% implemented. 15692 15693Enhanced the output of the AML debugger "dump namespace" command 15694to output in a more human-readable form. 15695 15696Current core subsystem library code sizes are shown below. These 15697 15698are the code and data sizes for the acpica.lib produced by the 15699Microsoft Visual C++ 6.0 compiler, and these values do not include 15700any ACPI driver or OSPM code. The debug version of the code 15701includes the full debug trace mechanism -- leading to a much 15702 15703larger code and data size. Note that these values will vary 15704depending on the efficiency of the compiler and the compiler 15705options used during generation. 15706 15707 Previous Label (09_20_01): 15708 Non-Debug Version: 65K Code, 5K Data, 70K Total 15709 Debug Version: 138K Code, 58K Data, 196K Total 15710 15711 This Label: 15712 15713 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 15714 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 15715 15716Linux: 15717 15718Implemented a "Bad BIOS Blacklist" to track machines that have 15719known ASL/AML problems. 15720 15721Enhanced the /proc interface for the thermal zone driver and added 15722support for _HOT (the critical suspend trip point). The 'info' 15723file now includes threshold/policy information, and allows setting 15724of _SCP (cooling preference) and _TZP (polling frequency) values 15725to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 15726frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 15727preference to the passive/quiet mode (if supported by the ASL). 15728 15729Implemented a workaround for a gcc bug that resuted in an OOPs 15730when loading the control method battery driver. 15731 15732 ---------------------------------------- 15733Summary of changes for this label: 09_20_01 15734 15735 ACPI CA Core Subsystem: 15736 15737The AcpiEnableEvent and AcpiDisableEvent interfaces have been 15738modified to allow individual GPE levels to be flagged as wake- 15739enabled (i.e., these GPEs are to remain enabled when the platform 15740sleeps.) 15741 15742The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 15743support wake-enabled GPEs. This means that upon entering the 15744sleep state, all GPEs that are not wake-enabled are disabled. 15745When leaving the sleep state, these GPEs are reenabled. 15746 15747A local double-precision divide/modulo module has been added to 15748enhance portability to OS kernels where a 64-bit math library is 15749not available. The new module is "utmath.c". 15750 15751Several optimizations have been made to reduce the use of CPU 15752stack. Originally over 2K, the maximum stack usage is now below 157532K at 1860 bytes (1.82k) 15754 15755Fixed a problem with the AcpiGetFirmwareTable interface where the 15756root table pointer was not mapped into a logical address properly. 15757 15758Fixed a problem where a NULL pointer was being dereferenced in the 15759interpreter code for the ASL Notify operator. 15760 15761Fixed a problem where the use of the ASL Revision operator 15762returned an error. This operator now returns the current version 15763of the ACPI CA core subsystem. 15764 15765Fixed a problem where objects passed as control method parameters 15766to AcpiEvaluateObject were always deleted at method termination. 15767However, these objects may end up being stored into the namespace 15768by the called method. The object reference count mechanism was 15769applied to these objects instead of a force delete. 15770 15771Fixed a problem where static strings or buffers (contained in the 15772AML code) that are declared as package elements within the ASL 15773code could cause a fault because the interpreter would attempt to 15774delete them. These objects are now marked with the "static 15775object" flag to prevent any attempt to delete them. 15776 15777Implemented an interpreter optimization to use operands directly 15778from the state object instead of extracting the operands to local 15779variables. This reduces stack use and code size, and improves 15780performance. 15781 15782The module exxface.c was eliminated as it was an unnecessary extra 15783layer of code. 15784 15785Current core subsystem library code sizes are shown below. These 15786are the code and data sizes for the acpica.lib produced by the 15787Microsoft Visual C++ 6.0 compiler, and these values do not include 15788any ACPI driver or OSPM code. The debug version of the code 15789includes the full debug trace mechanism -- leading to a much 15790larger code and data size. Note that these values will vary 15791depending on the efficiency of the compiler and the compiler 15792options used during generation. 15793 15794 Non-Debug Version: 65K Code, 5K Data, 70K Total 15795(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 15796Total (Previously 195K) 15797 15798Linux: 15799 15800Support for ACPI 2.0 64-bit integers has been added. All ACPI 15801Integer objects are now 64 bits wide 15802 15803All Acpi data types and structures are now in lower case. Only 15804Acpi macros are upper case for differentiation. 15805 15806 Documentation: 15807 15808Changes to the external interfaces as described above. 15809 15810 ---------------------------------------- 15811Summary of changes for this label: 08_31_01 15812 15813 ACPI CA Core Subsystem: 15814 15815A bug with interpreter implementation of the ASL Divide operator 15816was found and fixed. The implicit function return value (not the 15817explicit store operands) was returning the remainder instead of 15818the quotient. This was a longstanding bug and it fixes several 15819known outstanding issues on various platforms. 15820 15821The ACPI_DEBUG_PRINT and function trace entry/exit macros have 15822been further optimized for size. There are 700 invocations of the 15823DEBUG_PRINT macro alone, so each optimization reduces the size of 15824the debug version of the subsystem significantly. 15825 15826A stack trace mechanism has been implemented. The maximum stack 15827usage is about 2K on 32-bit platforms. The debugger command "stat 15828stack" will display the current maximum stack usage. 15829 15830All public symbols and global variables within the subsystem are 15831now prefixed with the string "Acpi". This keeps all of the 15832symbols grouped together in a kernel map, and avoids conflicts 15833with other kernel subsystems. 15834 15835Most of the internal fixed lookup tables have been moved into the 15836code segment via the const operator. 15837 15838Several enhancements have been made to the interpreter to both 15839reduce the code size and improve performance. 15840 15841Current core subsystem library code sizes are shown below. These 15842are the code and data sizes for the acpica.lib produced by the 15843Microsoft Visual C++ 6.0 compiler, and these values do not include 15844any ACPI driver or OSPM code. The debug version of the code 15845includes the full debug trace mechanism which contains over 700 15846invocations of the DEBUG_PRINT macro, 500 function entry macro 15847invocations, and over 900 function exit macro invocations -- 15848leading to a much larger code and data size. Note that these 15849values will vary depending on the efficiency of the compiler and 15850the compiler options used during generation. 15851 15852 Non-Debug Version: 64K Code, 5K Data, 69K Total 15853Debug Version: 137K Code, 58K Data, 195K Total 15854 15855 Linux: 15856 15857Implemented wbinvd() macro, pending a kernel-wide definition. 15858 15859Fixed /proc/acpi/event to handle poll() and short reads. 15860 15861 ASL Compiler, version X2026: 15862 15863Fixed a problem introduced in the previous label where the AML 15864 15865code emitted for package objects produced packages with zero 15866length. 15867 15868 ---------------------------------------- 15869Summary of changes for this label: 08_16_01 15870 15871ACPI CA Core Subsystem: 15872 15873The following ACPI 2.0 ASL operators have been implemented in the 15874AML interpreter (These are already supported by the Intel ASL 15875compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 15876ToBuffer. Support for 64-bit AML constants is implemented in the 15877AML parser, debugger, and disassembler. 15878 15879The internal memory tracking mechanism (leak detection code) has 15880been upgraded to reduce the memory overhead (a separate tracking 15881block is no longer allocated for each memory allocation), and now 15882supports all of the internal object caches. 15883 15884The data structures and code for the internal object caches have 15885been coelesced and optimized so that there is a single cache and 15886memory list data structure and a single group of functions that 15887implement generic cache management. This has reduced the code 15888size in both the debug and release versions of the subsystem. 15889 15890The DEBUG_PRINT macro(s) have been optimized for size and replaced 15891by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 15892different, because it generates a single call to an internal 15893function. This results in a savings of about 90 bytes per 15894invocation, resulting in an overall code and data savings of about 1589516% in the debug version of the subsystem. 15896 15897 Linux: 15898 15899Fixed C3 disk corruption problems and re-enabled C3 on supporting 15900machines. 15901 15902Integrated low-level sleep code by Patrick Mochel. 15903 15904Further tweaked source code Linuxization. 15905 15906Other minor fixes. 15907 15908 ASL Compiler: 15909 15910Support for ACPI 2.0 variable length packages is fixed/completed. 15911 15912Fixed a problem where the optional length parameter for the ACPI 159132.0 ToString operator. 15914 15915Fixed multiple extraneous error messages when a syntax error is 15916detected within the declaration line of a control method. 15917 15918 ---------------------------------------- 15919Summary of changes for this label: 07_17_01 15920 15921ACPI CA Core Subsystem: 15922 15923Added a new interface named AcpiGetFirmwareTable to obtain any 15924ACPI table via the ACPI signature. The interface can be called at 15925any time during kernel initialization, even before the kernel 15926virtual memory manager is initialized and paging is enabled. This 15927allows kernel subsystems to obtain ACPI tables very early, even 15928before the ACPI CA subsystem is initialized. 15929 15930Fixed a problem where Fields defined with the AnyAcc attribute 15931could be resolved to the incorrect address under the following 15932conditions: 1) the field width is larger than 8 bits and 2) the 15933parent operation region is not defined on a DWORD boundary. 15934 15935Fixed a problem where the interpreter is not being locked during 15936namespace initialization (during execution of the _INI control 15937methods), causing an error when an attempt is made to release it 15938later. 15939 15940ACPI 2.0 support in the AML Interpreter has begun and will be 15941ongoing throughout the rest of this year. In this label, The Mod 15942operator is implemented. 15943 15944Added a new data type to contain full PCI addresses named 15945ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 15946and Function values. 15947 15948 Linux: 15949 15950Enhanced the Linux version of the source code to change most 15951capitalized ACPI type names to lowercase. For example, all 15952instances of ACPI_STATUS are changed to acpi_status. This will 15953result in a large diff, but the change is strictly cosmetic and 15954aligns the CA code closer to the Linux coding standard. 15955 15956OSL Interfaces: 15957 15958The interfaces to the PCI configuration space have been changed to 15959add the PCI Segment number and to split the single 32-bit combined 15960DeviceFunction field into two 16-bit fields. This was 15961accomplished by moving the four values that define an address in 15962PCI configuration space (segment, bus, device, and function) to 15963the new ACPI_PCI_ID structure. 15964 15965The changes to the PCI configuration space interfaces led to a 15966reexamination of the complete set of address space access 15967interfaces for PCI, I/O, and Memory. The previously existing 18 15968interfaces have proven difficult to maintain (any small change 15969must be propagated across at least 6 interfaces) and do not easily 15970allow for future expansion to 64 bits if necessary. Also, on some 15971systems, it would not be appropriate to demultiplex the access 15972width (8, 16, 32,or 64) before calling the OSL if the 15973corresponding native OS interfaces contain a similar access width 15974parameter. For these reasons, the 18 address space interfaces 15975have been replaced by these 6 new ones: 15976 15977AcpiOsReadPciConfiguration 15978AcpiOsWritePciConfiguration 15979AcpiOsReadMemory 15980AcpiOsWriteMemory 15981AcpiOsReadPort 15982AcpiOsWritePort 15983 15984Added a new interface named AcpiOsGetRootPointer to allow the OSL 15985to perform the platform and/or OS-specific actions necessary to 15986obtain the ACPI RSDP table pointer. On IA-32 platforms, this 15987interface will simply call down to the CA core to perform the low- 15988memory search for the table. On IA-64, the RSDP is obtained from 15989EFI. Migrating this interface to the OSL allows the CA core to 15990 15991remain OS and platform independent. 15992 15993Added a new interface named AcpiOsSignal to provide a generic 15994"function code and pointer" interface for various miscellaneous 15995signals and notifications that must be made to the host OS. The 15996first such signals are intended to support the ASL Fatal and 15997Breakpoint operators. In the latter case, the AcpiOsBreakpoint 15998interface has been obsoleted. 15999 16000The definition of the AcpiFormatException interface has been 16001changed to simplify its use. The caller no longer must supply a 16002buffer to the call; A pointer to a const string is now returned 16003directly. This allows the call to be easily used in printf 16004statements, etc. since the caller does not have to manage a local 16005buffer. 16006 16007 16008 ASL Compiler, Version X2025: 16009 16010The ACPI 2.0 Switch/Case/Default operators have been implemented 16011and are fully functional. They will work with all ACPI 1.0 16012interpreters, since the operators are simply translated to If/Else 16013pairs. 16014 16015The ACPI 2.0 ElseIf operator is implemented and will also work 16016with 1.0 interpreters, for the same reason. 16017 16018Implemented support for ACPI 2.0 variable-length packages. These 16019packages have a separate opcode, and their size is determined by 16020the interpreter at run-time. 16021 16022Documentation The ACPI CA Programmer Reference has been updated to 16023reflect the new interfaces and changes to existing interfaces. 16024 16025 ------------------------------------------ 16026Summary of changes for this label: 06_15_01 16027 16028 ACPI CA Core Subsystem: 16029 16030Fixed a problem where a DWORD-accessed field within a Buffer 16031object would get its byte address inadvertently rounded down to 16032the nearest DWORD. Buffers are always Byte-accessible. 16033 16034 ASL Compiler, version X2024: 16035 16036Fixed a problem where the Switch() operator would either fault or 16037hang the compiler. Note however, that the AML code for this ACPI 160382.0 operator is not yet implemented. 16039 16040Compiler uses the new AcpiOsGetTimer interface to obtain compile 16041timings. 16042 16043Implementation of the CreateField operator automatically converts 16044a reference to a named field within a resource descriptor from a 16045byte offset to a bit offset if required. 16046 16047Added some missing named fields from the resource descriptor 16048support. These are the names that are automatically created by the 16049compiler to reference fields within a descriptor. They are only 16050valid at compile time and are not passed through to the AML 16051interpreter. 16052 16053Resource descriptor named fields are now typed as Integers and 16054subject to compile-time typechecking when used in expressions. 16055 16056 ------------------------------------------ 16057Summary of changes for this label: 05_18_01 16058 16059 ACPI CA Core Subsystem: 16060 16061Fixed a couple of problems in the Field support code where bits 16062from adjacent fields could be returned along with the proper field 16063bits. Restructured the field support code to improve performance, 16064readability and maintainability. 16065 16066New DEBUG_PRINTP macro automatically inserts the procedure name 16067into the output, saving hundreds of copies of procedure name 16068strings within the source, shrinking the memory footprint of the 16069debug version of the core subsystem. 16070 16071 Source Code Structure: 16072 16073The source code directory tree was restructured to reflect the 16074current organization of the component architecture. Some files 16075and directories have been moved and/or renamed. 16076 16077 Linux: 16078 16079Fixed leaking kacpidpc processes. 16080 16081Fixed queueing event data even when /proc/acpi/event is not 16082opened. 16083 16084 ASL Compiler, version X2020: 16085 16086Memory allocation performance enhancement - over 24X compile time 16087improvement on large ASL files. Parse nodes and namestring 16088buffers are now allocated from a large internal compiler buffer. 16089 16090The temporary .SRC file is deleted unless the "-s" option is 16091specified 16092 16093The "-d" debug output option now sends all output to the .DBG file 16094instead of the console. 16095 16096"External" second parameter is now optional 16097 16098"ElseIf" syntax now properly allows the predicate 16099 16100Last operand to "Load" now recognized as a Target operand 16101 16102Debug object can now be used anywhere as a normal object. 16103 16104ResourceTemplate now returns an object of type BUFFER 16105 16106EISAID now returns an object of type INTEGER 16107 16108"Index" now works with a STRING operand 16109 16110"LoadTable" now accepts optional parameters 16111 16112"ToString" length parameter is now optional 16113 16114"Interrupt (ResourceType," parse error fixed. 16115 16116"Register" with a user-defined region space parse error fixed 16117 16118Escaped backslash at the end of a string ("\\") scan/parse error 16119fixed 16120 16121"Revision" is now an object of type INTEGER. 16122 16123 16124 16125------------------------------------------ 16126Summary of changes for this label: 05_02_01 16127 16128Linux: 16129 16130/proc/acpi/event now blocks properly. 16131 16132Removed /proc/sys/acpi. You can still dump your DSDT from 16133/proc/acpi/dsdt. 16134 16135 ACPI CA Core Subsystem: 16136 16137Fixed a problem introduced in the previous label where some of the 16138"small" resource descriptor types were not recognized. 16139 16140Improved error messages for the case where an ASL Field is outside 16141the range of the parent operation region. 16142 16143 ASL Compiler, version X2018: 16144 16145 16146Added error detection for ASL Fields that extend beyond the length 16147of the parent operation region (only if the length of the region 16148is known at compile time.) This includes fields that have a 16149minimum access width that is smaller than the parent region, and 16150individual field units that are partially or entirely beyond the 16151extent of the parent. 16152 16153 16154 16155------------------------------------------ 16156Summary of changes for this label: 04_27_01 16157 16158 ACPI CA Core Subsystem: 16159 16160Fixed a problem where the namespace mutex could be released at the 16161wrong time during execution of AcpiRemoveAddressSpaceHandler. 16162 16163Added optional thread ID output for debug traces, to simplify 16164debugging of multiple threads. Added context switch notification 16165when the debug code realizes that a different thread is now 16166executing ACPI code. 16167 16168Some additional external data types have been prefixed with the 16169string "ACPI_" for consistency. This may effect existing code. 16170The data types affected are the external callback typedefs - e.g., 16171 16172WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 16173 16174 Linux: 16175 16176Fixed an issue with the OSL semaphore implementation where a 16177thread was waking up with an error from receiving a SIGCHLD 16178signal. 16179 16180Linux version of ACPI CA now uses the system C library for string 16181manipulation routines instead of a local implementation. 16182 16183Cleaned up comments and removed TBDs. 16184 16185 ASL Compiler, version X2017: 16186 16187Enhanced error detection and reporting for all file I/O 16188operations. 16189 16190 Documentation: 16191 16192Programmer Reference updated to version 1.06. 16193 16194 16195 16196------------------------------------------ 16197Summary of changes for this label: 04_13_01 16198 16199 ACPI CA Core Subsystem: 16200 16201Restructured support for BufferFields and RegionFields. 16202BankFields support is now fully operational. All known 32-bit 16203limitations on field sizes have been removed. Both BufferFields 16204and (Operation) RegionFields are now supported by the same field 16205management code. 16206 16207Resource support now supports QWORD address and IO resources. The 1620816/32/64 bit address structures and the Extended IRQ structure 16209have been changed to properly handle Source Resource strings. 16210 16211A ThreadId of -1 is now used to indicate a "mutex not acquired" 16212condition internally and must never be returned by AcpiOsThreadId. 16213This reserved value was changed from 0 since Unix systems allow a 16214thread ID of 0. 16215 16216Linux: 16217 16218Driver code reorganized to enhance portability 16219 16220Added a kernel configuration option to control ACPI_DEBUG 16221 16222Fixed the EC driver to honor _GLK. 16223 16224ASL Compiler, version X2016: 16225 16226Fixed support for the "FixedHw" keyword. Previously, the FixedHw 16227address space was set to 0, not 0x7f as it should be. 16228 16229 ------------------------------------------ 16230Summary of changes for this label: 03_13_01 16231 16232 ACPI CA Core Subsystem: 16233 16234During ACPI initialization, the _SB_._INI method is now run if 16235present. 16236 16237Notify handler fix - notifies are deferred until the parent method 16238completes execution. This fixes the "mutex already acquired" 16239issue seen occasionally. 16240 16241Part of the "implicit conversion" rules in ACPI 2.0 have been 16242found to cause compatibility problems with existing ASL/AML. The 16243convert "result-to-target-type" implementation has been removed 16244for stores to method Args and Locals. Source operand conversion 16245is still fully implemented. Possible changes to ACPI 2.0 16246specification pending. 16247 16248Fix to AcpiRsCalculatePciRoutingTableLength to return correct 16249length. 16250 16251Fix for compiler warnings for 64-bit compiles. 16252 16253 Linux: 16254 16255/proc output aligned for easier parsing. 16256 16257Release-version compile problem fixed. 16258 16259New kernel configuration options documented in Configure.help. 16260 16261IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 16262context" message. 16263 16264 OSPM: 16265 16266Power resource driver integrated with bus manager. 16267 16268Fixed kernel fault during active cooling for thermal zones. 16269 16270Source Code: 16271 16272The source code tree has been restructured. 16273 16274 16275 16276------------------------------------------ 16277Summary of changes for this label: 03_02_01 16278 16279 Linux OS Services Layer (OSL): 16280 16281Major revision of all Linux-specific code. 16282 16283Modularized all ACPI-specific drivers. 16284 16285Added new thermal zone and power resource drivers. 16286 16287Revamped /proc interface (new functionality is under /proc/acpi). 16288 16289New kernel configuration options. 16290 16291 Linux known issues: 16292 16293New kernel configuration options not documented in Configure.help 16294yet. 16295 16296 16297Module dependencies not currently implemented. If used, they 16298should be loaded in this order: busmgr, power, ec, system, 16299processor, battery, ac_adapter, button, thermal. 16300 16301Modules will not load if CONFIG_MODVERSION is set. 16302 16303IBM 600E - entering S5 may reboot instead of shutting down. 16304 16305IBM 600E - Sleep button may generate "Invalid <NULL> context" 16306message. 16307 16308Some systems may fail with "execution mutex already acquired" 16309message. 16310 16311 ACPI CA Core Subsystem: 16312 16313Added a new OSL Interface, AcpiOsGetThreadId. This was required 16314for the deadlock detection code. Defined to return a non-zero, 32- 16315bit thread ID for the currently executing thread. May be a non- 16316zero constant integer on single-thread systems. 16317 16318Implemented deadlock detection for internal subsystem mutexes. We 16319may add conditional compilation for this code (debug only) later. 16320 16321ASL/AML Mutex object semantics are now fully supported. This 16322includes multiple acquires/releases by owner and support for the 16323 16324Mutex SyncLevel parameter. 16325 16326A new "Force Release" mechanism automatically frees all ASL 16327Mutexes that have been acquired but not released when a thread 16328exits the interpreter. This forces conformance to the ACPI spec 16329("All mutexes must be released when an invocation exits") and 16330prevents deadlocked ASL threads. This mechanism can be expanded 16331(later) to monitor other resource acquisitions if OEM ASL code 16332continues to misbehave (which it will). 16333 16334Several new ACPI exception codes have been added for the Mutex 16335support. 16336 16337Recursive method calls are now allowed and supported (the ACPI 16338spec does in fact allow recursive method calls.) The number of 16339recursive calls is subject to the restrictions imposed by the 16340SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 16341parameter. 16342 16343Implemented support for the SyncLevel parameter for control 16344methods (ACPI 2.0 feature) 16345 16346Fixed a deadlock problem when multiple threads attempted to use 16347the interpreter. 16348 16349Fixed a problem where the string length of a String package 16350element was not always set in a package returned from 16351AcpiEvaluateObject. 16352 16353Fixed a problem where the length of a String package element was 16354not always included in the length of the overall package returned 16355from AcpiEvaluateObject. 16356 16357Added external interfaces (Acpi*) to the ACPI debug memory 16358manager. This manager keeps a list of all outstanding 16359allocations, and can therefore detect memory leaks and attempts to 16360free memory blocks more than once. Useful for code such as the 16361power manager, etc. May not be appropriate for device drivers. 16362Performance with the debug code enabled is slow. 16363 16364The ACPI Global Lock is now an optional hardware element. 16365 16366 ASL Compiler Version X2015: 16367 16368Integrated changes to allow the compiler to be generated on 16369multiple platforms. 16370 16371Linux makefile added to generate the compiler on Linux 16372 16373 Source Code: 16374 16375All platform-specific headers have been moved to their own 16376subdirectory, Include/Platform. 16377 16378New source file added, Interpreter/ammutex.c 16379 16380New header file, Include/acstruct.h 16381 16382 Documentation: 16383 16384The programmer reference has been updated for the following new 16385interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 16386 16387 ------------------------------------------ 16388Summary of changes for this label: 02_08_01 16389 16390Core ACPI CA Subsystem: Fixed a problem where an error was 16391incorrectly returned if the return resource buffer was larger than 16392the actual data (in the resource interfaces). 16393 16394References to named objects within packages are resolved to the 16395 16396full pathname string before packages are returned directly (via 16397the AcpiEvaluateObject interface) or indirectly via the resource 16398interfaces. 16399 16400Linux OS Services Layer (OSL): 16401 16402Improved /proc battery interface. 16403 16404 16405Added C-state debugging output and other miscellaneous fixes. 16406 16407ASL Compiler Version X2014: 16408 16409All defined method arguments can now be used as local variables, 16410including the ones that are not actually passed in as parameters. 16411The compiler tracks initialization of the arguments and issues an 16412exception if they are used without prior assignment (just like 16413locals). 16414 16415The -o option now specifies a filename prefix that is used for all 16416output files, including the AML output file. Otherwise, the 16417default behavior is as follows: 1) the AML goes to the file 16418specified in the DSDT. 2) all other output files use the input 16419source filename as the base. 16420 16421 ------------------------------------------ 16422Summary of changes for this label: 01_25_01 16423 16424Core ACPI CA Subsystem: Restructured the implementation of object 16425store support within the interpreter. This includes support for 16426the Store operator as well as any ASL operators that include a 16427target operand. 16428 16429Partially implemented support for Implicit Result-to-Target 16430conversion. This is when a result object is converted on the fly 16431to the type of an existing target object. Completion of this 16432support is pending further analysis of the ACPI specification 16433concerning this matter. 16434 16435CPU-specific code has been removed from the subsystem (hardware 16436directory). 16437 16438New Power Management Timer functions added 16439 16440Linux OS Services Layer (OSL): Moved system state transition code 16441to the core, fixed it, and modified Linux OSL accordingly. 16442 16443Fixed C2 and C3 latency calculations. 16444 16445 16446We no longer use the compilation date for the version message on 16447initialization, but retrieve the version from AcpiGetSystemInfo(). 16448 16449Incorporated for fix Sony VAIO machines. 16450 16451Documentation: The Programmer Reference has been updated and 16452reformatted. 16453 16454 16455ASL Compiler: Version X2013: Fixed a problem where the line 16456numbering and error reporting could get out of sync in the 16457presence of multiple include files. 16458 16459 ------------------------------------------ 16460Summary of changes for this label: 01_15_01 16461 16462Core ACPI CA Subsystem: 16463 16464Implemented support for type conversions in the execution of the 16465ASL Concatenate operator (The second operand is converted to 16466match the type of the first operand before concatenation.) 16467 16468Support for implicit source operand conversion is partially 16469implemented. The ASL source operand types Integer, Buffer, and 16470String are freely interchangeable for most ASL operators and are 16471converted by the interpreter on the fly as required. Implicit 16472Target operand conversion (where the result is converted to the 16473target type before storing) is not yet implemented. 16474 16475Support for 32-bit and 64-bit BCD integers is implemented. 16476 16477Problem fixed where a field read on an aligned field could cause a 16478read past the end of the field. 16479 16480New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 16481does not return a value, but the caller expects one. (The ASL 16482compiler flags this as a warning.) 16483 16484ASL Compiler: 16485 16486Version X2011: 164871. Static typechecking of all operands is implemented. This 16488prevents the use of invalid objects (such as using a Package where 16489an Integer is required) at compile time instead of at interpreter 16490run-time. 164912. The ASL source line is printed with ALL errors and warnings. 164923. Bug fix for source EOF without final linefeed. 164934. Debug option is split into a parse trace and a namespace trace. 164945. Namespace output option (-n) includes initial values for 16495integers and strings. 164966. Parse-only option added for quick syntax checking. 164977. Compiler checks for duplicate ACPI name declarations 16498 16499Version X2012: 165001. Relaxed typechecking to allow interchangeability between 16501strings, integers, and buffers. These types are now converted by 16502the interpreter at runtime. 165032. Compiler reports time taken by each internal subsystem in the 16504debug output file. 16505 16506 16507 ------------------------------------------ 16508Summary of changes for this label: 12_14_00 16509 16510ASL Compiler: 16511 16512This is the first official release of the compiler. Since the 16513compiler requires elements of the Core Subsystem, this label 16514synchronizes everything. 16515 16516------------------------------------------ 16517Summary of changes for this label: 12_08_00 16518 16519 16520Fixed a problem where named references within the ASL definition 16521of both OperationRegions and CreateXXXFields did not work 16522properly. The symptom was an AE_AML_OPERAND_TYPE during 16523initialization of the region/field. This is similar (but not 16524related internally) to the problem that was fixed in the last 16525label. 16526 16527Implemented both 32-bit and 64-bit support for the BCD ASL 16528functions ToBCD and FromBCD. 16529 16530Updated all legal headers to include "2000" in the copyright 16531years. 16532 16533 ------------------------------------------ 16534Summary of changes for this label: 12_01_00 16535 16536Fixed a problem where method invocations within the ASL definition 16537of both OperationRegions and CreateXXXFields did not work 16538properly. The symptom was an AE_AML_OPERAND_TYPE during 16539initialization of the region/field: 16540 16541 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 16542[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 16543(0x3005) 16544 16545Fixed a problem where operators with more than one nested 16546subexpression would fail. The symptoms were varied, by mostly 16547AE_AML_OPERAND_TYPE errors. This was actually a rather serious 16548problem that has gone unnoticed until now. 16549 16550 Subtract (Add (1,2), Multiply (3,4)) 16551 16552Fixed a problem where AcpiGetHandle didn't quite get fixed in the 16553previous build (The prefix part of a relative path was handled 16554incorrectly). 16555 16556Fixed a problem where Operation Region initialization failed if 16557the operation region name was a "namepath" instead of a simple 16558"nameseg". Symptom was an AE_NO_OPERAND error. 16559 16560Fixed a problem where an assignment to a local variable via the 16561indirect RefOf mechanism only worked for the first such 16562assignment. Subsequent assignments were ignored. 16563 16564 ------------------------------------------ 16565Summary of changes for this label: 11_15_00 16566 16567ACPI 2.0 table support with backwards support for ACPI 1.0 and the 165680.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 16569the AML interpreter does NOT have support for the new 2.0 ASL 16570grammar terms at this time. 16571 16572All ACPI hardware access is via the GAS structures in the ACPI 2.0 16573FADT. 16574 16575All physical memory addresses across all platforms are now 64 bits 16576wide. Logical address width remains dependent on the platform 16577(i.e., "void *"). 16578 16579AcpiOsMapMemory interface changed to a 64-bit physical address. 16580 16581The AML interpreter integer size is now 64 bits, as per the ACPI 165822.0 specification. 16583 16584For backwards compatibility with ACPI 1.0, ACPI tables with a 16585revision number less than 2 use 32-bit integers only. 16586 16587Fixed a problem where the evaluation of OpRegion operands did not 16588always resolve them to numbers properly. 16589 16590------------------------------------------ 16591Summary of changes for this label: 10_20_00 16592 16593Fix for CBN_._STA issue. This fix will allow correct access to 16594CBN_ OpRegions when the _STA returns 0x8. 16595 16596Support to convert ACPI constants (Ones, Zeros, One) to actual 16597values before a package object is returned 16598 16599Fix for method call as predicate to if/while construct causing 16600incorrect if/while behavior 16601 16602Fix for Else block package lengths sometimes calculated wrong (if 16603block > 63 bytes) 16604 16605Fix for Processor object length field, was always zero 16606 16607Table load abort if FACP sanity check fails 16608 16609Fix for problem with Scope(name) if name already exists 16610 16611Warning emitted if a named object referenced cannot be found 16612(resolved) during method execution. 16613 16614 16615 16616 16617 16618------------------------------------------ 16619Summary of changes for this label: 9_29_00 16620 16621New table initialization interfaces: AcpiInitializeSubsystem no 16622longer has any parameters AcpiFindRootPointer - Find the RSDP (if 16623necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 16624>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 16625AcpiLoadTables 16626 16627Note: These interface changes require changes to all existing OSDs 16628 16629The PCI_Config default address space handler is always installed 16630at the root namespace object. 16631 16632------------------------------------------- 16633Summary of changes for this label: 09_15_00 16634 16635The new initialization architecture is implemented. New 16636interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 16637AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 16638 16639(Namespace is automatically loaded when a table is loaded) 16640 16641The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1664252 bytes to 32 bytes. There is usually one of these for every 16643namespace object, so the memory savings is significant. 16644 16645Implemented just-in-time evaluation of the CreateField operators. 16646 16647Bug fixes for IA-64 support have been integrated. 16648 16649Additional code review comments have been implemented 16650 16651The so-called "third pass parse" has been replaced by a final walk 16652through the namespace to initialize all operation regions (address 16653spaces) and fields that have not yet been initialized during the 16654execution of the various _INI and REG methods. 16655 16656New file - namespace/nsinit.c 16657 16658------------------------------------------- 16659Summary of changes for this label: 09_01_00 16660 16661Namespace manager data structures have been reworked to change the 16662primary object from a table to a single object. This has 16663resulted in dynamic memory savings of 3X within the namespace and 166642X overall in the ACPI CA subsystem. 16665 16666Fixed problem where the call to AcpiEvFindPciRootBuses was 16667inadvertently left commented out. 16668 16669Reduced the warning count when generating the source with the GCC 16670compiler. 16671 16672Revision numbers added to each module header showing the 16673SourceSafe version of the file. Please refer to this version 16674number when giving us feedback or comments on individual modules. 16675 16676The main object types within the subsystem have been renamed to 16677clarify their purpose: 16678 16679ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 16680ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 16681ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 16682 16683NOTE: no changes to the initialization sequence are included in 16684this label. 16685 16686------------------------------------------- 16687Summary of changes for this label: 08_23_00 16688 16689Fixed problem where TerminateControlMethod was being called 16690multiple times per method 16691 16692Fixed debugger problem where single stepping caused a semaphore to 16693be oversignalled 16694 16695Improved performance through additional parse object caching - 16696added ACPI_EXTENDED_OP type 16697 16698------------------------------------------- 16699Summary of changes for this label: 08_10_00 16700 16701Parser/Interpreter integration: Eliminated the creation of 16702complete parse trees for ACPI tables and control methods. 16703Instead, parse subtrees are created and then deleted as soon as 16704they are processed (Either entered into the namespace or executed 16705by the interpreter). This reduces the use of dynamic kernel 16706memory significantly. (about 10X) 16707 16708Exception codes broken into classes and renumbered. Be sure to 16709recompile all code that includes acexcep.h. Hopefully we won't 16710have to renumber the codes again now that they are split into 16711classes (environment, programmer, AML code, ACPI table, and 16712internal). 16713 16714Fixed some additional alignment issues in the Resource Manager 16715subcomponent 16716 16717Implemented semaphore tracking in the AcpiExec utility, and fixed 16718several places where mutexes/semaphores were being unlocked 16719without a corresponding lock operation. There are no known 16720semaphore or mutex "leaks" at this time. 16721 16722Fixed the case where an ASL Return operator is used to return an 16723unnamed package. 16724 16725------------------------------------------- 16726Summary of changes for this label: 07_28_00 16727 16728Fixed a problem with the way addresses were calculated in 16729AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 16730manifested itself when a Field was created with WordAccess or 16731DwordAccess, but the field unit defined within the Field was less 16732 16733than a Word or Dword. 16734 16735Fixed a problem in AmlDumpOperands() module's loop to pull 16736operands off of the operand stack to display information. The 16737problem manifested itself as a TLB error on 64-bit systems when 16738accessing an operand stack with two or more operands. 16739 16740Fixed a problem with the PCI configuration space handlers where 16741context was getting confused between accesses. This required a 16742change to the generic address space handler and address space 16743setup definitions. Handlers now get both a global handler context 16744(this is the one passed in by the user when executing 16745AcpiInstallAddressSpaceHandler() and a specific region context 16746that is unique to each region (For example, the _ADR, _SEG and 16747_BBN values associated with a specific region). The generic 16748function definitions have changed to the following: 16749 16750typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 16751UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 16752*HandlerContext, // This used to be void *Context void 16753*RegionContext); // This is an additional parameter 16754 16755typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 16756RegionHandle, UINT32 Function, void *HandlerContext, void 16757**RegionContext); // This used to be **ReturnContext 16758 16759------------------------------------------- 16760Summary of changes for this label: 07_21_00 16761 16762Major file consolidation and rename. All files within the 16763interpreter have been renamed as well as most header files. This 16764was done to prevent collisions with existing files in the host 16765OSs -- filenames such as "config.h" and "global.h" seem to be 16766quite common. The VC project files have been updated. All 16767makefiles will require modification. 16768 16769The parser/interpreter integration continues in Phase 5 with the 16770implementation of a complete 2-pass parse (the AML is parsed 16771twice) for each table; This avoids the construction of a huge 16772parse tree and therefore reduces the amount of dynamic memory 16773required by the subsystem. Greater use of the parse object cache 16774means that performance is unaffected. 16775 16776Many comments from the two code reviews have been rolled in. 16777 16778The 64-bit alignment support is complete. 16779 16780------------------------------------------- 16781Summary of changes for this label: 06_30_00 16782 16783With a nod and a tip of the hat to the technology of yesteryear, 16784we've added support in the source code for 80 column output 16785devices. The code is now mostly constrained to 80 columns or 16786less to support environments and editors that 1) cannot display 16787or print more than 80 characters on a single line, and 2) cannot 16788disable line wrapping. 16789 16790A major restructuring of the namespace data structure has been 16791completed. The result is 1) cleaner and more 16792understandable/maintainable code, and 2) a significant reduction 16793in the dynamic memory requirement for each named ACPI object 16794(almost half). 16795 16796------------------------------------------- 16797Summary of changes for this label: 06_23_00 16798 16799Linux support has been added. In order to obtain approval to get 16800the ACPI CA subsystem into the Linux kernel, we've had to make 16801quite a few changes to the base subsystem that will affect all 16802users (all the changes are generic and OS- independent). The 16803effects of these global changes have been somewhat far reaching. 16804Files have been merged and/or renamed and interfaces have been 16805renamed. The major changes are described below. 16806 16807Osd* interfaces renamed to AcpiOs* to eliminate namespace 16808pollution/confusion within our target kernels. All OSD 16809interfaces must be modified to match the new naming convention. 16810 16811Files merged across the subsystem. A number of the smaller source 16812and header files have been merged to reduce the file count and 16813increase the density of the existing files. There are too many 16814to list here. In general, makefiles that call out individual 16815files will require rebuilding. 16816 16817Interpreter files renamed. All interpreter files now have the 16818prefix am* instead of ie* and is*. 16819 16820Header files renamed: The acapi.h file is now acpixf.h. The 16821acpiosd.h file is now acpiosxf.h. We are removing references to 16822the acronym "API" since it is somewhat windowsy. The new name is 16823"external interface" or xface or xf in the filenames.j 16824 16825 16826All manifest constants have been forced to upper case (some were 16827mixed case.) Also, the string "ACPI_" has been prepended to many 16828(not all) of the constants, typedefs, and structs. 16829 16830The globals "DebugLevel" and "DebugLayer" have been renamed 16831"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 16832 16833All other globals within the subsystem are now prefixed with 16834"AcpiGbl_" Internal procedures within the subsystem are now 16835prefixed with "Acpi" (with only a few exceptions). The original 16836two-letter abbreviation for the subcomponent remains after "Acpi" 16837- for example, CmCallocate became AcpiCmCallocate. 16838 16839Added a source code translation/conversion utility. Used to 16840generate the Linux source code, it can be modified to generate 16841other types of source as well. Can also be used to cleanup 16842existing source by removing extraneous spaces and blank lines. 16843Found in tools/acpisrc/* 16844 16845OsdUnMapMemory was renamed to OsdUnmapMemory and then 16846AcpiOsUnmapMemory. (UnMap became Unmap). 16847 16848A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 16849When set to one, this indicates that the caller wants to use the 16850 16851semaphore as a mutex, not a counting semaphore. ACPI CA uses 16852both types. However, implementers of this call may want to use 16853different OS primitives depending on the type of semaphore 16854requested. For example, some operating systems provide separate 16855 16856"mutex" and "semaphore" interfaces - where the mutex interface is 16857much faster because it doesn't have all the overhead of a full 16858semaphore implementation. 16859 16860Fixed a deadlock problem where a method that accesses the PCI 16861address space can block forever if it is the first access to the 16862space. 16863 16864------------------------------------------- 16865Summary of changes for this label: 06_02_00 16866 16867Support for environments that cannot handle unaligned data 16868accesses (e.g. firmware and OS environments devoid of alignment 16869handler technology namely SAL/EFI and the IA-64 Linux kernel) has 16870been added (via configurable macros) in these three areas: - 16871Transfer of data from the raw AML byte stream is done via byte 16872moves instead of word/dword/qword moves. - External objects are 16873aligned within the user buffer, including package elements (sub- 16874objects). - Conversion of name strings to UINT32 Acpi Names is now 16875done byte-wise. 16876 16877The Store operator was modified to mimic Microsoft's 16878implementation when storing to a Buffer Field. 16879 16880Added a check of the BM_STS bit before entering C3. 16881 16882The methods subdirectory has been obsoleted and removed. A new 16883file, cmeval.c subsumes the functionality. 16884 16885A 16-bit (DOS) version of AcpiExec has been developed. The 16886makefile is under the acpiexec directory. 16887