1---------------------------------------- 224 November 2015. Summary of changes for version 20151124: 3 4This release is available at https://acpica.org/downloads 5 6 71) ACPICA kernel-resident subsystem: 8 9Fixed a possible regression for a previous update to FADT handling. The 10FADT no longer has a fixed table ID, causing some issues with code that 11was hardwired to a specific ID. Lv Zheng. 12 13Fixed a problem where the method auto-serialization could interfere with 14the current SyncLevel. This change makes the auto-serialization support 15transparent to the SyncLevel support and management. 16 17Removed support for the _SUB predefined name in AcpiGetObjectInfo. This 18interface is intended for early access to the namespace during the 19initial namespace device discovery walk. The _SUB method has been seen to 20access operation regions in some cases, causing errors because the 21operation regions are not fully initialized. 22 23AML Debugger: Fixed some issues with the terminate/quit/exit commands 24that can cause faults. Lv Zheng. 25 26AML Debugger: Add thread ID support so that single-step mode only applies 27to the AML Debugger thread. This prevents runtime errors within some 28kernels. Lv Zheng. 29 30Eliminated extraneous warnings from AcpiGetSleepTypeData. Since the _Sx 31methods that are invoked by this interface are optional, removed warnings 32emitted for the case where one or more of these methods do not exist. 33ACPICA BZ 1208, original change by Prarit Bhargava. 34 35Made a major pass through the entire ACPICA source code base to 36standardize formatting that has diverged a bit over time. There are no 37functional changes, but this will of course cause quite a few code 38differences from the previous ACPICA release. 39 40Example Code and Data Size: These are the sizes for the OS-independent 41acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 42debug version of the code includes the debug output trace mechanism and 43has a much larger code and data size. 44 45 Current Release: 46 Non-Debug Version: 102.0K Code, 28.3K Data, 130.3K Total 47 Debug Version: 199.6K Code, 81.8K Data, 281.4K Total 48 Previous Release: 49 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 50 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 51 52 532) iASL Compiler/Disassembler and Tools: 54 55iASL/acpiexec/acpixtract/disassembler: Added support to allow multiple 56definition blocks within a single ASL file and the resulting AML file. 57Support for this type of file was also added to the various tools that 58use binary AML files: acpiexec, acpixtract, and the AML disassembler. The 59example code below shows two definition blocks within the same file: 60 61 DefinitionBlock ("dsdt.aml", "DSDT", 2, "Intel", "Template", 620x12345678) 63 { 64 } 65 DefinitionBlock ("", "SSDT", 2, "Intel", "Template", 0xABCDEF01) 66 { 67 } 68 69iASL: Enhanced typechecking for the Name() operator. All expressions for 70the value of the named object must be reduced/folded to a single constant 71at compile time, as per the ACPI specification (the AML definition of 72Name()). 73 74iASL: Fixed some code indentation issues for the -ic and -ia options (C 75and assembly headers). Now all emitted code correctly begins in column 1. 76 77iASL: Added an error message for an attempt to open a Scope() on an 78object defined in an SSDT. The DSDT is always loaded into the namespace 79first, so any attempt to open a Scope on an SSDT object will fail at 80runtime. 81 82---------------------------------------- 8330 September 2015. Summary of changes for version 20150930: 84 851) ACPICA kernel-resident subsystem: 86 87Debugger: Implemented several changes and bug fixes to assist support for 88the in-kernel version of the AML debugger. Lv Zheng. 89- Fix the "predefined" command for in-kernel debugger. 90- Do not enter debug command loop for the help and version commands. 91- Disallow "execute" command during execution/single-step of a method. 92 93Interpreter: Updated runtime typechecking for all operators that have 94target operands. The operand is resolved and validated that it is legal. 95For example, the target cannot be a non-data object such as a Device, 96Mutex, ThermalZone, etc., as per the ACPI specification. 97 98Debugger: Fixed the double-mutex user I/O handshake to work when local 99deadlock detection is enabled. 100 101Debugger: limited display of method locals and arguments (LocalX and 102ArgX) to only those that have actually been initialized. This prevents 103lines of extraneous output. 104 105Updated the definition of the NFIT table to correct the bit polarity of 106one flag: ACPI_NFIT_MEM_ARMED --> ACPI_NFIT_MEM_NOT_ARMED 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: 101.7K Code, 27.9K Data, 129.6K Total 115 Debug Version: 199.3K Code, 81.4K Data, 280.7K Total 116 Previous Release: 117 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 118 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 119 120 1212) iASL Compiler/Disassembler and Tools: 122 123iASL: Improved the compile-time typechecking for operands of many of the 124ASL operators: 125 126-- Added an option to disable compiler operand/operator typechecking (- 127ot). 128 129-- For the following operators, the TermArg operands are now validated 130when possible to be Integer data objects: BankField, OperationRegion, 131DataTableRegion, Buffer, and Package. 132 133-- Store (Source, Target): Both the source and target operands are 134resolved and checked that the operands are both legal. For example, 135neither operand can be a non-data object such as a Device, Mutex, 136ThermalZone, etc. Note, as per the ACPI specification, the CopyObject 137operator can be used to store an object to any type of target object. 138 139-- Store (Source, Target): If the source is a Package object, the target 140must be a Package object, LocalX, ArgX, or Debug. Likewise, if the target 141is a Package, the source must also be a Package. 142 143-- Store (Source, Target): A warning is issued if the source and target 144resolve to the identical named object. 145 146-- Store (Source, <method invocation>): An error is generated for the 147target method invocation, as this construct is not supported by the AML 148interpreter. 149 150-- For all ASL math and logic operators, the target operand must be a 151data object (Integer, String, Buffer, LocalX, ArgX, or Debug). This 152includes the function return value also. 153 154-- External declarations are also included in the typechecking where 155possible. External objects defined using the UnknownObj keyword cannot be 156typechecked, however. 157 158iASL and Disassembler: Added symbolic (ASL+) support for the ASL Index 159operator: 160- Legacy code: Index(PKG1, 3) 161- New ASL+ code: PKG1[3] 162This completes the ACPI 6.0 ASL+ support as it was the only operator not 163supported. 164 165iASL: Fixed the file suffix for the preprocessor output file (.i). Two 166spaces were inadvertently appended to the filename, causing file access 167and deletion problems on some systems. 168 169ASL Test Suite (ASLTS): Updated the master makefile to generate all 170possible compiler output files when building the test suite -- thus 171exercising these features of the compiler. These files are automatically 172deleted when the test suite exits. 173 174---------------------------------------- 17518 August 2015. Summary of changes for version 20150818: 176 1771) ACPICA kernel-resident subsystem: 178 179Fix a regression for AcpiGetTableByIndex interface causing it to fail. Lv 180Zheng. ACPICA BZ 1186. 181 182Completed development to ensure that the ACPICA Disassembler and Debugger 183are fully standalone components of ACPICA. Removed cross-component 184dependences. Lv Zheng. 185 186The max-number-of-AML-loops is now runtime configurable (previously was 187compile-time only). This is essentially a loop timeout to force-abort 188infinite AML loops. ACPCIA BZ 1192. 189 190Debugger: Cleanup output to dump ACPI names and namepaths without any 191trailing underscores. Lv Zheng. ACPICA BZ 1135. 192 193Removed unnecessary conditional compilations across the Debugger and 194Disassembler components where entire modules could be left uncompiled. 195 196The aapits test is deprecated and has been removed from the ACPICA git 197tree. The test has never been completed and has not been maintained, thus 198becoming rather useless. ACPICA BZ 1015, 794. 199 200A batch of small changes to close bugzilla and other reports: 201- Remove duplicate code for _PLD processing. ACPICA BZ 1176. 202- Correctly cleanup after a ACPI table load failure. ACPICA BZ 1185. 203- iASL: Support POSIX yacc again in makefile. Jung-uk Kim. 204- ACPI table support: general cleanup and simplification. Lv Zheng, Bob 205Moore. 206- ACPI table support: fix for a buffer read overrun in AcpiTbFindTable. 207ACPICA BZ 1184. 208- Enhance parameter validation for DataTableRegion and LoadTable ASL/AML 209operators. 210- Debugger: Split debugger initialization/termination interfaces. Lv 211Zheng. 212- AcpiExec: Emit OemTableId for SSDTs during the load phase for table 213identification. 214- AcpiExec: Add debug message during _REG method phase during table 215load/init. 216- AcpiNames: Fix a regression where some output was missing and no longer 217emitted. 218- Debugger: General cleanup and simplification. Lv Zheng. 219- Disassembler: Cleanup use of several global option variables. Lv Zheng. 220 221Example Code and Data Size: These are the sizes for the OS-independent 222acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 223debug version of the code includes the debug output trace mechanism and 224has a much larger code and data size. 225 226 Current Release: 227 Non-Debug Version: 101.3K Code, 27.7K Data, 129.0K Total 228 Debug Version: 198.6K Code, 80.9K Data, 279.5K Total 229 Previous Release: 230 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 231 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 232 233 2342) iASL Compiler/Disassembler and Tools: 235 236AcpiExec: Fixed a problem where any more than 32 ACPI tables in the XSDT 237were not handled properly and caused load errors. Now, properly invoke 238and use the ACPICA auto-reallocate mechanism for ACPI table data 239structures. ACPICA BZ 1188 240 241AcpiNames: Add command-line wildcard support for ACPI table files. ACPICA 242BZ 1190. 243 244AcpiExec and AcpiNames: Add -l option to load ACPI tables only. For 245AcpiExec, this means that no control methods (like _REG/_INI/_STA) are 246executed during initialization. ACPICA BZ 1187, 1189. 247 248iASL/Disassembler: Implemented a prototype "listing" mode that emits AML 249that corresponds to each disassembled ASL statement, to simplify 250debugging. ACPICA BZ 1191. 251 252Debugger: Add option to the "objects" command to display a summary of the 253current namespace objects (Object type and count). This is displayed if 254the command is entered with no arguments. 255 256AcpiNames: Add -x option to specify debug level, similar to AcpiExec. 257 258---------------------------------------- 25917 July 2015. Summary of changes for version 20150717: 260 2611) ACPICA kernel-resident subsystem: 262 263Improved the partitioning between the Debugger and Disassembler 264components. This allows the Debugger to be used standalone within kernel 265code without the Disassembler (which is used for single stepping also). 266This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng. 267 268Debugger: Implemented a new command to trace the execution of control 269methods (Trace). This is especially useful for the in-kernel version of 270the debugger when file I/O may not be available for method trace output. 271See the ACPICA reference for more information. Lv Zheng. 272 273Moved all C library prototypes (used for the local versions of these 274functions when requested) to a new header, acclib.h 275Cleaned up the use of non-ANSI C library functions. These functions are 276implemented locally in ACPICA. Moved all such functions to a common 277source file, utnonansi.c 278 279Debugger: Fixed a problem with the "!!" command (get last command 280executed) where the debugger could enter an infinite loop and eventually 281crash. 282 283Removed the use of local macros that were used for some of the standard C 284library functions to automatically cast input parameters. This mostly 285affected the is* functions where the input parameter is defined to be an 286int. This required a few modifications to the main ACPICA source code to 287provide casting for these functions and eliminate possible compiler 288warnings for these parameters. 289 290Across the source code, added additional status/error checking to resolve 291issues discovered by static source code analysis tools such as Coverity. 292 293Example Code and Data Size: These are the sizes for the OS-independent 294acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 295debug version of the code includes the debug output trace mechanism and 296has a much larger code and data size. 297 298 Current Release: 299 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total 300 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total 301 Previous Release: 302 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 303 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 304 305 3062) iASL Compiler/Disassembler and Tools: 307 308iASL: Fixed a regression where the device map file feature no longer 309worked properly when used in conjunction with the disassembler. It only 310worked properly with the compiler itself. 311 312iASL: Implemented a new warning for method LocalX variables that are set 313but never used (similar to a C compiler such as gcc). This also applies 314to ArgX variables that are not defined by the parent method, and are 315instead (legally) used as local variables. 316 317iASL/Preprocessor: Finished the pass-through of line numbers from the 318preprocessor to the compiler. This ensures that compiler errors/warnings 319have the correct original line numbers and filenames, regardless of any 320#include files. 321 322iASL/Preprocessor: Fixed a couple of issues with comment handling and the 323pass-through of comments to the preprocessor output file (which becomes 324the compiler input file). Also fixed a problem with // comments that 325appear after a math expression. 326 327iASL: Added support for the TCPA server table to the table compiler and 328template generator. (The client table was already previously supported) 329 330iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to 331identify the iASL compiler. 332 333Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined 334multiple times. The new names are ACPI_SIGN_NEGATIVE and 335ACPI_SIGN_POSITIVE. 336 337AcpiHelp: Update to expand help messages for the iASL preprocessor 338directives. 339 340 341---------------------------------------- 34219 June 2015. Summary of changes for version 20150619: 343 344Two regressions in version 20150616 have been addressed: 345 346Fixes some problems/issues with the C library macro removal (ACPI_STRLEN, 347etc.) This update changes ACPICA to only use the standard headers for 348functions, or the prototypes for the local versions of the C library 349functions. Across the source code, this required some additional casts 350for some Clib invocations for portability. Moved all local prototypes to 351a new file, acclib.h 352 353Fixes several problems with recent changes to the handling of the FACS 354table that could cause some systems not to boot. 355 356 357---------------------------------------- 35816 June 2015. Summary of changes for version 20150616: 359 360 3611) ACPICA kernel-resident subsystem: 362 363Across the entire ACPICA source code base, the various macros for the C 364library functions (such as ACPI_STRLEN, etc.) have been removed and 365replaced by the standard C library names (strlen, etc.) The original 366purpose for these macros is no longer applicable. This simplification 367reduces the number of macros used in the ACPICA source code 368significantly, improving readability and maintainability. 369 370Implemented support for a new ACPI table, the OSDT. This table, the 371"override" SDT, can be loaded directly by the host OS at boot time. It 372enables the replacement of existing namespace objects that were installed 373via the DSDT and/or SSDTs. The primary purpose for this is to replace 374buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated 375for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob 376Moore. 377 378Added support for systems with (improperly) two FACS tables -- a "32-bit" 379table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit 380X field). This change will support both automatically. There continues to 381be systems found with this issue. This support requires a change to the 382AcpiSetFirmwareWakingVector interface. Also, a public global variable has 383been added to allow the host to select which FACS is desired 384(AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more 385details Lv Zheng. 386 387Added a new feature to allow for systems that do not contain an FACS. 388Although this is already supported on hardware-reduced platforms, the 389feature has been extended for all platforms. The reasoning is that we do 390not want to abort the entire ACPICA initialization just because the 391system is seriously buggy and has no FACS. 392 393Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were 394not correctly transcribed from the ACPI specification in ACPICA version 39520150515. 396 397Implemented support for the _CLS object in the AcpiGetObjectInfo external 398interface. 399 400Updated the definitions of the TCPA and TPM2 ACPI tables to the more 401recent TCG ACPI Specification, December 14, 2014. Table disassembler and 402compiler also updated. Note: The TCPA "server" table is not supported by 403the disassembler/table-compiler at this time. 404 405ACPI 6.0: Added definitions for the new GIC version field in the MADT. 406 407Example Code and Data Size: These are the sizes for the OS-independent 408acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 409debug version of the code includes the debug output trace mechanism and 410has a much larger code and data size. 411 412 Current Release: 413 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total 414 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total 415 Previous Release: 416 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 417 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 418 419 4202) iASL Compiler/Disassembler and Tools: 421 422Disassembler: Fixed a problem with the new symbolic operator disassembler 423where incorrect ASL code could be emitted in some cases for the "non- 424commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and 425ShiftRight. The actual problem cases seem to be rather unusual in common 426ASL code, however. David Box. 427 428Modified the linux version of acpidump to obtain ACPI tables from not 429just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv 430Zheng. 431 432iASL: Fixed a problem where the user preprocessor output file (.i) 433contained extra data that was not expected. The compiler was using this 434file as a temporary file and passed through #line directives in order to 435keep compiler error messages in sync with the input file and line number 436across multiple include files. The (.i) is no longer a temporary file as 437the compiler uses a new, different file for the original purpose. 438 439iASL: Fixed a problem where comments within the original ASL source code 440file were not passed through to the preprocessor output file, nor any 441listing files. 442 443iASL: Fixed some issues for the handling of the "#include" preprocessor 444directive and the similar (but not the same) "Include" ASL operator. 445 446iASL: Add support for the new OSDT in both the disassembler and compiler. 447 448iASL: Fixed a problem with the constant folding support where a Buffer 449object could be incorrectly generated (incorrectly formed) during a 450conversion to a Store() operator. 451 452AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new 453description text for the _REV predefined name. _REV now permanently 454returns 2, as per the ACPI 6.0 specification. 455 456Debugger: Enhanced the output of the Debug ASL object for references 457produced by the Index operator. For Buffers and strings, only output the 458actual byte pointed to by the index. For packages, only print the single 459package element decoded by the index. Previously, the entire 460buffer/string/package was emitted. 461 462iASL/Table-compiler: Fixed a regression where the "generic" data types 463were no longer recognized, causing errors. 464 465 466---------------------------------------- 46715 May 2015. Summary of changes for version 20150515: 468 469This release implements most of ACPI 6.0 as described below. 470 4711) ACPICA kernel-resident subsystem: 472 473Implemented runtime argument checking and return value checking for all 474new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI, 475_MTL, _PRR, _RDI, _RST, _TFP, _TSN. 476 477Example Code and Data Size: These are the sizes for the OS-independent 478acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 479debug version of the code includes the debug output trace mechanism and 480has a much larger code and data size. 481 482 Current Release: 483 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total 484 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total 485 Previous Release: 486 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 487 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 488 489 4902) iASL Compiler/Disassembler and Tools: 491 492iASL compiler: Added compile-time support for all new ACPI 6.0 predefined 493names (argument count validation and return value typechecking.) 494 495iASL disassembler and table compiler: implemented support for all new 496ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV. 497 498iASL disassembler and table compiler: Added ACPI 6.0 changes to existing 499tables: FADT, MADT. 500 501iASL preprocessor: Added a new directive to enable inclusion of binary 502blobs into ASL code. The new directive is #includebuffer. It takes a 503binary file as input and emits a named ascii buffer object into the ASL 504code. 505 506AcpiHelp: Added support for all new ACPI 6.0 predefined names. 507 508AcpiHelp: Added a new option, -d, to display all iASL preprocessor 509directives. 510 511AcpiHelp: Added a new option, -t, to display all known/supported ACPI 512tables. 513 514---------------------------------------- 51510 April 2015. Summary of changes for version 20150410: 516 517Reverted a change introduced in version 20150408 that caused 518a regression in the disassembler where incorrect operator 519symbols could be emitted. 520 521---------------------------------------- 52208 April 2015. Summary of changes for version 20150408: 523 524 5251) ACPICA kernel-resident subsystem: 526 527Permanently set the return value for the _REV predefined name. It now 528returns 2 (was 5). This matches other ACPI implementations. _REV will be 529deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2 530for ACPI 2.0 and later. It should never be used to differentiate or 531identify operating systems. 532 533Added the "Windows 2015" string to the _OSI support. ACPICA will now 534return TRUE to a query with this string. 535 536Fixed several issues with the local version of the printf function. 537 538Added the C99 compiler option (-std=c99) to the Unix makefiles. 539 540 Current Release: 541 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total 542 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total 543 Previous Release: 544 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 545 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 546 547 5482) iASL Compiler/Disassembler and Tools: 549 550iASL: Implemented an enhancement to the constant folding feature to 551transform the parse tree to a simple Store operation whenever possible: 552 Add (2, 3, X) ==> is converted to: Store (5, X) 553 X = 2 + 3 ==> is converted to: Store (5, X) 554 555Updated support for the SLIC table (Software Licensing Description Table) 556in both the Data Table compiler and the disassembler. The SLIC table 557support now conforms to "Microsoft Software Licensing Tables (SLIC and 558MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data 559following the ACPI header is now defined to be "Proprietary Data", and as 560such, can only be entered or displayed as a hex data block. 561 562Implemented full support for the MSDM table as described in the document 563above. Note: The format of MSDM is similar to SLIC. Any MSDM data 564following the ACPI header is defined to be "Proprietary Data", and can 565only be entered or displayed as a hex data block. 566 567Implemented the -Pn option for the iASL Table Compiler (was only 568implemented for the ASL compiler). This option disables the iASL 569preprocessor. 570 571Disassembler: For disassembly of Data Tables, added a comment field 572around the Ascii equivalent data that is emitted as part of the "Raw 573Table Data" block. This prevents the iASL Preprocessor from possible 574confusion if/when the table is compiled. 575 576Disassembler: Added an option (-df) to force the disassembler to assume 577that the table being disassembled contains valid AML. This feature is 578useful for disassembling AML files that contain ACPI signatures other 579than DSDT or SSDT (such as OEMx or other signatures). 580 581Changes for the EFI version of the tools: 5821) Fixed a build error/issue 5832) Fixed a cast warning 584 585iASL: Fixed a path issue with the __FILE__ operator by making the 586directory prefix optional within the internal SplitInputFilename 587function. 588 589Debugger: Removed some unused global variables. 590 591Tests: Updated the makefile for proper generation of the AAPITS suite. 592 593---------------------------------------- 59404 February 2015. Summary of changes for version 20150204: 595 596ACPICA kernel-resident subsystem: 597 598Updated all ACPICA copyrights and signons to 2014. Added the 2014 599copyright to all module headers and signons, including the standard Linux 600header. This affects virtually every file in the ACPICA core subsystem, 601iASL compiler, all ACPICA utilities, and the test suites. 602 603Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues. 604A raw gpe handling mechanism was created to allow better handling of GPE 605storms that aren't easily managed by the normal handler. The raw handler 606allows disabling/renabling of the the GPE so that interrupt storms can be 607avoided in cases where events cannot be timely serviced. In this 608scenario, handlers should use the AcpiSetGpe() API to disable/enable the 609GPE. This API will leave the reference counts undisturbed, thereby 610preventing unintentional clearing of the GPE when the intent in only to 611temporarily disable it. Raw handlers allow enabling and disabling of a 612GPE by removing GPE register locking. As such, raw handlers much provide 613their own locks while using GPE API's to protect access to GPE data 614structures. 615Lv Zheng 616 617Events: Always modify GPE registers under the GPE lock. 618Applies GPE lock around AcpiFinishGpe() to protect access to GPE register 619values. Reported as bug by joe.liu@apple.com. 620 621Unix makefiles: Separate option to disable optimizations and 622_FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the 623NOOPT disable option and creates a separate flag (NOFORTIFY) for this 624purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined 625errors when building ACPICA. This allows disabling the option without 626also having to disable optimazations. 627David Box 628 629 Current Release: 630 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total 631 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total 632 633---------------------------------------- 63407 November 2014. Summary of changes for version 20141107: 635 636This release is available at https://acpica.org/downloads 637 638This release introduces and implements language extensions to ASL that 639provide support for symbolic ("C-style") operators and expressions. These 640language extensions are known collectively as ASL+. 641 642 6431) iASL Compiler/Disassembler and Tools: 644 645Disassembler: Fixed a problem with disassembly of the UartSerialBus 646macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E. 647Box. 648 649Disassembler: Fixed the Unicode macro support to add escape sequences. 650All non-printable ASCII values are emitted as escape sequences, as well 651as the standard escapes for quote and backslash. Ensures that the 652disassembled macro can be correctly recompiled. 653 654iASL: Added Printf/Fprintf macros for formatted output. These macros are 655translated to existing AML Concatenate and Store operations. Printf 656writes to the ASL Debug object. Fprintf allows the specification of an 657ASL name as the target. Only a single format specifier is required, %o, 658since the AML interpreter dynamically converts objects to the required 659type. David E. Box. 660 661 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 662 (Concatenate (Concatenate (Concatenate ("", Arg0), 663 ": Unexpected value for "), Arg1), ", "), Arg2), 664 " at line "), Arg3), Debug) 665 666 (new) Printf ("%o: Unexpected value for %o, %o at line %o", 667 Arg0, Arg1, Arg2, Arg3) 668 669 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate 670 ("", Arg1), ": "), Arg0), " Successful"), STR1) 671 672 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0) 673 674iASL: Added debug options (-bp, -bt) to dynamically prune levels of the 675ASL parse tree before the AML code is generated. This allows blocks of 676ASL code to be removed in order to help locate and identify problem 677devices and/or code. David E. Box. 678 679AcpiExec: Added support (-fi) for an optional namespace object 680initialization file. This file specifies initial values for namespace 681objects as necessary for debugging and testing different ASL code paths 682that may be taken as a result of BIOS options. 683 684 6852) Overview of symbolic operator support for ASL (ASL+) 686------------------------------------------------------- 687 688As an extension to the ASL language, iASL implements support for symbolic 689(C-style) operators for math and logical expressions. This can greatly 690simplify ASL code as well as improve both readability and 691maintainability. These language extensions can exist concurrently with 692all legacy ASL code and expressions. 693 694The symbolic extensions are 100% compatible with existing AML 695interpreters, since no new AML opcodes are created. To implement the 696extensions, the iASL compiler transforms the symbolic expressions into 697the legacy ASL/AML equivalents at compile time. 698 699Full symbolic expressions are supported, along with the standard C 700precedence and associativity rules. 701 702Full disassembler support for the symbolic expressions is provided, and 703creates an automatic migration path for existing ASL code to ASL+ code 704via the disassembly process. By default, the disassembler now emits ASL+ 705code with symbolic expressions. An option (-dl) is provided to force the 706disassembler to emit legacy ASL code if desired. 707 708Below is the complete list of the currently supported symbolic operators 709with examples. See the iASL User Guide for additional information. 710 711 712ASL+ Syntax Legacy ASL Equivalent 713----------- --------------------- 714 715 // Math operators 716 717Z = X + Y Add (X, Y, Z) 718Z = X - Y Subtract (X, Y, Z) 719Z = X * Y Multiply (X, Y, Z) 720Z = X / Y Divide (X, Y, , Z) 721Z = X % Y Mod (X, Y, Z) 722Z = X << Y ShiftLeft (X, Y, Z) 723Z = X >> Y ShiftRight (X, Y, Z) 724Z = X & Y And (X, Y, Z) 725Z = X | Y Or (X, Y, Z) 726Z = X ^ Y Xor (X, Y, Z) 727Z = ~X Not (X, Z) 728X++ Increment (X) 729X-- Decrement (X) 730 731 // Logical operators 732 733(X == Y) LEqual (X, Y) 734(X != Y) LNotEqual (X, Y) 735(X < Y) LLess (X, Y) 736(X > Y) LGreater (X, Y) 737(X <= Y) LLessEqual (X, Y) 738(X >= Y) LGreaterEqual (X, Y) 739(X && Y) LAnd (X, Y) 740(X || Y) LOr (X, Y) 741(!X) LNot (X) 742 743 // Assignment and compound assignment operations 744 745X = Y Store (Y, X) 746X += Y Add (X, Y, X) 747X -= Y Subtract (X, Y, X) 748X *= Y Multiply (X, Y, X) 749X /= Y Divide (X, Y, , X) 750X %= Y Mod (X, Y, X) 751X <<= Y ShiftLeft (X, Y, X) 752X >>= Y ShiftRight (X, Y, X) 753X &= Y And (X, Y, X) 754X |= Y Or (X, Y, X) 755X ^= Y Xor (X, Y, X) 756 757 7583) ASL+ Examples: 759----------------- 760 761Legacy ASL: 762 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual ( 763 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530, 7640x03FB), 765 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0)))) 766 { 767 And (MEMB, 0xFFFFFFF0, SRMB) 768 Store (MEMB, Local2) 769 Store (PDBM, Local1) 770 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM) 771 Store (SRMB, MEMB) 772 Or (PDBM, 0x02, PDBM) 773 } 774 775ASL+ version: 776 If (((R510 & 0x03FB) == 0x02E0) || 777 ((R520 & 0x03FB) == 0x02E0) || 778 ((R530 & 0x03FB) == 0x02E0) || 779 ((R540 & 0x03FB) == 0x02E0)) 780 { 781 SRMB = (MEMB & 0xFFFFFFF0) 782 Local2 = MEMB 783 Local1 = PDBM 784 PDBM &= 0xFFFFFFFFFFFFFFF9 785 MEMB = SRMB 786 PDBM |= 0x02 787 } 788 789Legacy ASL: 790 Store (0x1234, Local1) 791 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3) 792 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3) 793 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3) 794 Store (Index (PKG1, 0x03), Local6) 795 Store (Add (Local3, Local2), Debug) 796 Add (Local1, 0x0F, Local2) 797 Add (Local1, Multiply (Local2, Local3), Local2) 798 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3) 799 800ASL+ version: 801 Local1 = 0x1234 802 Local3 = (((Local1 + TEST) + 0x20) * Local2) 803 Local3 = (Local2 * ((Local1 + TEST) + 0x20)) 804 Local3 = (Local1 + (TEST + (0x20 * Local2))) 805 Local6 = Index (PKG1, 0x03) 806 Debug = (Local3 + Local2) 807 Local2 = (Local1 + 0x0F) 808 Local2 = (Local1 + (Local2 * Local3)) 809 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1)) 810 811 812---------------------------------------- 81326 September 2014. Summary of changes for version 20140926: 814 8151) ACPICA kernel-resident subsystem: 816 817Updated the GPIO operation region handler interface (GeneralPurposeIo). 818In order to support GPIO Connection objects with multiple pins, along 819with the related Field objects, the following changes to the interface 820have been made: The Address is now defined to be the offset in bits of 821the field unit from the previous invocation of a Connection. It can be 822viewed as a "Pin Number Index" into the connection resource descriptor. 823The BitWidth is the exact bit width of the field. It is usually one bit, 824but not always. See the ACPICA reference guide (section 8.8.6.2.1) for 825additional information and examples. 826 827GPE support: During ACPICA/GPE initialization, ensure that all GPEs with 828corresponding _Lxx/_Exx methods are disabled (they may have been enabled 829by the firmware), so that they cannot fire until they are enabled via 830AcpiUpdateAllGpes. Rafael J. Wysocki. 831 832Added a new return flag for the Event/GPE status interfaces -- 833AcpiGetEventStatus and AcpiGetGpeStatus. The new 834ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or 835GPE currently has a handler associated with it, and can thus actually 836affect the system. Lv Zheng. 837 838Example Code and Data Size: These are the sizes for the OS-independent 839acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 840debug version of the code includes the debug output trace mechanism and 841has a much larger code and data size. 842 843 Current Release: 844 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total 845 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total 846 Previous Release: 847 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 848 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 849 8502) iASL Compiler/Disassembler and Tools: 851 852iASL: Fixed a memory allocation/free regression introduced in 20140828 853that could cause the compiler to crash. This was introduced inadvertently 854during the effort to eliminate compiler memory leaks. ACPICA BZ 1111, 8551113. 856 857iASL: Removed two error messages that have been found to create false 858positives, until they can be fixed and fully validated (ACPICA BZ 1112): 8591) Illegal forward reference within a method 8602) Illegal reference across two methods 861 862iASL: Implemented a new option (-lm) to create a hardware mapping file 863that summarizes all GPIO, I2C, SPI, and UART connections. This option 864works for both the compiler and disassembler. See the iASL compiler user 865guide for additional information and examples (section 6.4.6). 866 867AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to 868version 2. This corrects the AE_BAD_HEADER exception seen on systems with 869a version 1 RSDP. Lv Zheng ACPICA BZ 1097. 870 871AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode 872unless STDIN is actually a terminal. Assists with batch-mode processing. 873ACPICA BZ 1114. 874 875Disassembler/AcpiHelp: Added another large group of recognized _HID 876values. 877 878 879---------------------------------------- 88028 August 2014. Summary of changes for version 20140828: 881 8821) ACPICA kernel-resident subsystem: 883 884Fixed a problem related to the internal use of the Timer() operator where 885a 64-bit divide could cause an attempted link to a double-precision math 886library. This divide is not actually necessary, so the code was 887restructured to eliminate it. Lv Zheng. 888 889ACPI 5.1: Added support for the runtime validation of the _DSD package 890(similar to the iASL support). 891 892ACPI 5.1/Headers: Added support for the GICC affinity subtable to the 893SRAT table. Hanjun Guo <hanjun.guo@linaro.org>. 894 895Example Code and Data Size: These are the sizes for the OS-independent 896acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 897debug version of the code includes the debug output trace mechanism and 898has a much larger code and data size. 899 900 Current Release: 901 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total 902 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total 903 Previous Release: 904 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1 905 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 906 9072) iASL Compiler/Disassembler and Tools: 908 909AcpiExec: Fixed a problem on unix systems where the original terminal 910state was not always properly restored upon exit. Seen when using the -v 911option. ACPICA BZ 1104. 912 913iASL: Fixed a problem with the validation of the ranges/length within the 914Memory24 resource descriptor. There was a boundary condition when the 915range was equal to the (length -1) caused by the fact that these values 916are defined in 256-byte blocks, not bytes. ACPICA BZ 1098 917 918Disassembler: Fixed a problem with the GpioInt descriptor interrupt 919polarity 920flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword 921is 922now supported properly. 923 924ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported 925in the disassembler, data table compiler, and table template generator. 926 927iASL: Added a requirement for Device() objects that one of either a _HID 928or _ADR must exist within the scope of a Device, as per the ACPI 929specification. Remove a similar requirement that was incorrectly in place 930for the _DSD object. 931 932iASL: Added error detection for illegal named references within control 933methods that would cause runtime failures. Now trapped as errors are: 1) 934References to objects within a non-parent control method. 2) Forward 935references (within a method) -- for control methods, AML interpreters use 936a one-pass parse of control methods. ACPICA BZ 1008. 937 938iASL: Added error checking for dependencies related to the _PSx power 939methods. ACPICA BZ 1029. 9401) For _PS0, one of these must exist within the same scope: _PS1, _PS2, 941_PS3. 9422) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same 943scope. 944 945iASL and table compiler: Cleanup miscellaneous memory leaks by fully 946deploying the existing object and string caches and adding new caches for 947the table compiler. 948 949iASL: Split the huge parser source file into multiple subfiles to improve 950manageability. Generation now requires the M4 macro preprocessor, which 951is part of the Bison distribution on both unix and windows platforms. 952 953AcpiSrc: Fixed and removed all extraneous warnings generated during 954entire ACPICA source code scan and/or conversion. 955 956 957---------------------------------------- 958 95924 July 2014. Summary of changes for version 20140724: 960 961The ACPI 5.1 specification has been released and is available at: 962http://uefi.org/specs/access 963 964 9650) ACPI 5.1 support in ACPICA: 966 967ACPI 5.1 is fully supported in ACPICA as of this release. 968 969New predefined names. Support includes iASL and runtime ACPICA 970validation. 971 _CCA (Cache Coherency Attribute). 972 _DSD (Device-Specific Data). David Box. 973 974Modifications to existing ACPI tables. Support includes headers, iASL 975Data Table compiler, disassembler, and the template generator. 976 FADT - New fields and flags. Graeme Gregory. 977 GTDT - One new subtable and new fields. Tomasz Nowicki. 978 MADT - Two new subtables. Tomasz Nowicki. 979 PCCT - One new subtable. 980 981Miscellaneous. 982 New notification type for System Resource Affinity change events. 983 984 9851) ACPICA kernel-resident subsystem: 986 987Fixed a regression introduced in 20140627 where a fault can happen during 988the deletion of Alias AML namespace objects. The problem affected both 989the core ACPICA and the ACPICA tools including iASL and AcpiExec. 990 991Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a 992simple mechanism to enable wake GPEs that have no associated handler or 993control method. Rafael Wysocki. 994 995Updated the AcpiEnableGpe interface to disallow the enable if there is no 996handler or control method associated with the particular GPE. This will 997help avoid meaningless GPEs and even GPE floods. Rafael Wysocki. 998 999Updated GPE handling and dispatch by disabling the GPE before clearing 1000the status bit for edge-triggered GPEs. Lv Zheng. 1001 1002Added Timer() support to the AML Debug object. The current timer value is 1003now displayed with each invocation of (Store to) the debug object to 1004enable simple generation of execution times for AML code (method 1005execution for example.) ACPICA BZ 1093. 1006 1007Example Code and Data Size: These are the sizes for the OS-independent 1008acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1009debug version of the code includes the debug output trace mechanism and 1010has a much larger code and data size. 1011 1012 Current Release: 1013 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total 1014 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total 1015 Previous Release: 1016 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1017 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1018 1019 10202) iASL Compiler/Disassembler and Tools: 1021 1022Fixed an issue with the recently added local printf implementation, 1023concerning width/precision specifiers that could cause incorrect output. 1024Lv Zheng. ACPICA BZ 1094. 1025 1026Disassembler: Added support to detect buffers that contain UUIDs and 1027disassemble them to an invocation of the ToUUID operator. Also emit 1028commented descriptions of known ACPI-related UUIDs. 1029 1030AcpiHelp: Added support to display known ACPI-related UUIDs. New option, 1031-u. Adds three new files. 1032 1033iASL: Update table compiler and disassembler for DMAR table changes that 1034were introduced in September 2013. With assistance by David Woodhouse. 1035 1036---------------------------------------- 103727 June 2014. Summary of changes for version 20140627: 1038 10391) ACPICA kernel-resident subsystem: 1040 1041Formatted Output: Implemented local versions of standard formatted output 1042utilities such as printf, etc. Over time, it has been discovered that 1043there are in fact many portability issues with printf, and the addition 1044of this feature will fix/prevent these issues once and for all. Some 1045known issues are summarized below: 1046 10471) Output of 64-bit values is not portable. For example, UINT64 is %ull 1048for the Linux kernel and is %uI64 for some MSVC versions. 10492) Invoking printf consistently in a manner that is portable across both 105032-bit and 64-bit platforms is difficult at best in many situations. 10513) The output format for pointers varies from system to system (leading 1052zeros especially), and leads to inconsistent output from ACPICA across 1053platforms. 10544) Certain platform-specific printf formats may conflict with ACPICA use. 10555) If there is no local C library available, ACPICA now has local support 1056for printf. 1057 1058-- To address these printf issues in a complete manner, ACPICA now 1059directly implements a small subset of printf format specifiers, only 1060those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng. 1061 1062Implemented support for ACPICA generation within the EFI environment. 1063Initially, the AcpiDump utility is supported in the UEFI shell 1064environment. Lv Zheng. 1065 1066Added a new external interface, AcpiLogError, to improve ACPICA 1067portability. This allows the host to redirect error messages from the 1068ACPICA utilities. Lv Zheng. 1069 1070Added and deployed new OSL file I/O interfaces to improve ACPICA 1071portability: 1072 AcpiOsOpenFile 1073 AcpiOsCloseFile 1074 AcpiOsReadFile 1075 AcpiOsWriteFile 1076 AcpiOsGetFileOffset 1077 AcpiOsSetFileOffset 1078There are C library implementations of these functions in the new file 1079service_layers/oslibcfs.c -- however, the functions can be implemented by 1080the local host in any way necessary. Lv Zheng. 1081 1082Implemented a mechanism to disable/enable ACPI table checksum validation 1083at runtime. This can be useful when loading tables very early during OS 1084initialization when it may not be possible to map the entire table in 1085order to compute the checksum. Lv Zheng. 1086 1087Fixed a buffer allocation issue for the Generic Serial Bus support. 1088Originally, a fixed buffer length was used. This change allows for 1089variable-length buffers based upon the protocol indicated by the field 1090access attributes. Reported by Lan Tianyu. Lv Zheng. 1091 1092Fixed a problem where an object detached from a namespace node was not 1093properly terminated/cleared and could cause a circular list problem if 1094reattached. ACPICA BZ 1063. David Box. 1095 1096Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick. 1097 1098Fixed a possible memory leak in an error return path within the function 1099AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King. 1100 1101Example Code and Data Size: These are the sizes for the OS-independent 1102acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1103debug version of the code includes the debug output trace mechanism and 1104has a much larger code and data size. 1105 1106 Current Release: 1107 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total 1108 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total 1109 Previous Release: 1110 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1111 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1112 1113 11142) iASL Compiler/Disassembler and Tools: 1115 1116Disassembler: Add dump of ASCII equivalent text within a comment at the 1117end of each line of the output for the Buffer() ASL operator. 1118 1119AcpiDump: Miscellaneous changes: 1120 Fixed repetitive table dump in -n mode. 1121 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if 1122the ACPI 2.0 GUID fails. 1123 1124iASL: Fixed a problem where the compiler could fault if incorrectly given 1125an acpidump output file as input. ACPICA BZ 1088. David Box. 1126 1127AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if 1128they are invoked without any arguments. 1129 1130Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ 11311086. Colin Ian King. 1132 1133Disassembler: Cleaned up a block of code that extracts a parent Op 1134object. Added a comment that explains that the parent is guaranteed to be 1135valid in this case. ACPICA BZ 1069. 1136 1137---------------------------------------- 113824 April 2014. Summary of changes for version 20140424: 1139 11401) ACPICA kernel-resident subsystem: 1141 1142Implemented support to skip/ignore NULL address entries in the RSDT/XSDT. 1143Some of these tables are known to contain a trailing NULL entry. Lv 1144Zheng. 1145 1146Removed an extraneous error message for the case where there are a large 1147number of system GPEs (> 124). This was the "32-bit FADT register is too 1148long to convert to GAS struct" message, which is irrelevant for GPEs 1149since the GPEx_BLK_LEN fields of the FADT are always used instead of the 1150(limited capacity) GAS bit length. Also, several changes to ensure proper 1151support for GPE numbers > 255, where some "GPE number" fields were 8-bits 1152internally. 1153 1154Implemented and deployed additional configuration support for the public 1155ACPICA external interfaces. Entire classes of interfaces can now be 1156easily modified or configured out, replaced by stubbed inline functions 1157by default. Lv Zheng. 1158 1159Moved all public ACPICA runtime configuration globals to the public 1160ACPICA external interface file for convenience. Also, removed some 1161obsolete/unused globals. See the file acpixf.h. Lv Zheng. 1162 1163Documentation: Added a new section to the ACPICA reference describing the 1164maximum number of GPEs that can be supported by the FADT-defined GPEs in 1165block zero and one. About 1200 total. See section 4.4.1 of the ACPICA 1166reference. 1167 1168Example Code and Data Size: These are the sizes for the OS-independent 1169acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1170debug version of the code includes the debug output trace mechanism and 1171has a much larger code and data size. 1172 1173 Current Release: 1174 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total 1175 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total 1176 Previous Release: 1177 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1178 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1179 1180 11812) iASL Compiler/Disassembler and Tools: 1182 1183iASL and disassembler: Add full support for the LPIT table (Low Power 1184Idle Table). Includes support in the disassembler, data table compiler, 1185and template generator. 1186 1187AcpiDump utility: 11881) Add option to force the use of the RSDT (over the XSDT). 11892) Improve validation of the RSDP signature (use 8 chars instead of 4). 1190 1191iASL: Add check for predefined packages that are too large. For 1192predefined names that contain subpackages, check if each subpackage is 1193too large. (Check for too small already exists.) 1194 1195Debugger: Updated the GPE command (which simulates a GPE by executing the 1196GPE code paths in ACPICA). The GPE device is now optional, and defaults 1197to the GPE 0/1 FADT-defined blocks. 1198 1199Unix application OSL: Update line-editing support. Add additional error 1200checking and take care not to reset terminal attributes on exit if they 1201were never set. This should help guarantee that the terminal is always 1202left in the previous state on program exit. 1203 1204---------------------------------------- 120525 March 2014. Summary of changes for version 20140325: 1206 12071) ACPICA kernel-resident subsystem: 1208 1209Updated the auto-serialize feature for control methods. This feature 1210automatically serializes all methods that create named objects in order 1211to prevent runtime errors. The update adds support to ignore the 1212currently executing AML SyncLevel when invoking such a method, in order 1213to prevent disruption of any existing SyncLevel priorities that may exist 1214in the AML code. Although the use of SyncLevels is relatively rare, this 1215change fixes a regression where an AE_AML_MUTEX_ORDER exception can 1216appear on some machines starting with the 20140214 release. 1217 1218Added a new external interface to allow the host to install ACPI tables 1219very early, before the namespace is even created. AcpiInstallTable gives 1220the host additional flexibility for ACPI table management. Tables can be 1221installed directly by the host as if they had originally appeared in the 1222XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables 1223(anything except the DSDT and FACS). Adds a new file, tbdata.c, along 1224with additional internal restructuring and cleanup. See the ACPICA 1225Reference for interface details. Lv Zheng. 1226 1227Added validation of the checksum for all incoming dynamically loaded 1228tables (via external interfaces or via AML Load/LoadTable operators). Lv 1229Zheng. 1230 1231Updated the use of the AcpiOsWaitEventsComplete interface during Notify 1232and GPE handler removal. Restructured calls to eliminate possible race 1233conditions. Lv Zheng. 1234 1235Added a warning for the use/execution of the ASL/AML Unload (table) 1236operator. This will help detect and identify machines that use this 1237operator if and when it is ever used. This operator has never been seen 1238in the field and the usage model and possible side-effects of the drastic 1239runtime action of a full table removal are unknown. 1240 1241Reverted the use of #pragma push/pop which was introduced in the 20140214 1242release. It appears that push and pop are not implemented by enough 1243compilers to make the use of this feature feasible for ACPICA at this 1244time. However, these operators may be deployed in a future ACPICA 1245release. 1246 1247Added the missing EXPORT_SYMBOL macros for the install and remove SCI 1248handler interfaces. 1249 1250Source code generation: 12511) Disabled the use of the "strchr" macro for the gcc-specific 1252generation. For some versions of gcc, this macro can periodically expose 1253a compiler bug which in turn causes compile-time error(s). 12542) Added support for PPC64 compilation. Colin Ian King. 1255 1256Example Code and Data Size: These are the sizes for the OS-independent 1257acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1258debug version of the code includes the debug output trace mechanism and 1259has a much larger code and data size. 1260 1261 Current Release: 1262 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total 1263 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total 1264 Previous Release: 1265 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1266 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1267 1268 12692) iASL Compiler/Disassembler and Tools: 1270 1271Disassembler: Added several new features to improve the readability of 1272the resulting ASL code. Extra information is emitted within comment 1273fields in the ASL code: 12741) Known _HID/_CID values are decoded to descriptive text. 12752) Standard values for the Notify() operator are decoded to descriptive 1276text. 12773) Target operands are expanded to full pathnames (in a comment) when 1278possible. 1279 1280Disassembler: Miscellaneous updates for extern() handling: 12811) Abort compiler if file specified by -fe option does not exist. 12822) Silence unnecessary warnings about argument count mismatches. 12833) Update warning messages concerning unresolved method externals. 12844) Emit "UnknownObj" keyword for externals whose type cannot be 1285determined. 1286 1287AcpiHelp utility: 12881) Added the -a option to display both the ASL syntax and the AML 1289encoding for an input ASL operator. This effectively displays all known 1290information about an ASL operator with one AcpiHelp invocation. 12912) Added substring match support (similar to a wildcard) for the -i 1292(_HID/PNP IDs) option. 1293 1294iASL/Disassembler: Since this tool does not yet support execution on big- 1295endian machines, added detection of endianness and an error message if 1296execution is attempted on big-endian. Support for big-endian within iASL 1297is a feature that is on the ACPICA to-be-done list. 1298 1299AcpiBin utility: 13001) Remove option to extract binary files from an acpidump; this function 1301is made obsolete by the AcpiXtract utility. 13022) General cleanup of open files and allocated buffers. 1303 1304---------------------------------------- 130514 February 2014. Summary of changes for version 20140214: 1306 13071) ACPICA kernel-resident subsystem: 1308 1309Implemented a new mechanism to proactively prevent problems with ill- 1310behaved reentrant control methods that create named ACPI objects. This 1311behavior is illegal as per the ACPI specification, but is nonetheless 1312frequently seen in the field. Previously, this could lead to an 1313AE_ALREADY_EXISTS exception if the method was actually entered by more 1314than one thread. This new mechanism detects such methods at table load 1315time and marks them "serialized" to prevent reentrancy. A new global 1316option, AcpiGbl_AutoSerializeMethods, has been added to disable this 1317feature if desired. This mechanism and global option obsoletes and 1318supersedes the previous AcpiGbl_SerializeAllMethods option. 1319 1320Added the "Windows 2013" string to the _OSI support. ACPICA will now 1321respond TRUE to _OSI queries with this string. It is the stated policy of 1322ACPICA to add new strings to the _OSI support as soon as possible after 1323they are defined. See the full ACPICA _OSI policy which has been added to 1324the utilities/utosi.c file. 1325 1326Hardened/updated the _PRT return value auto-repair code: 13271) Do not abort the repair on a single subpackage failure, continue to 1328check all subpackages. 13292) Add check for the minimum subpackage length (4). 13303) Properly handle extraneous NULL package elements. 1331 1332Added support to avoid the possibility of infinite loops when traversing 1333object linked lists. Never allow an infinite loop, even in the face of 1334corrupted object lists. 1335 1336ACPICA headers: Deployed the use of #pragma pack(push) and #pragma 1337pack(pop) directives to ensure that the ACPICA headers are independent of 1338compiler settings or other host headers. 1339 1340Example Code and Data Size: These are the sizes for the OS-independent 1341acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1342debug version of the code includes the debug output trace mechanism and 1343has a much larger code and data size. 1344 1345 Current Release: 1346 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total 1347 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total 1348 Previous Release: 1349 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1350 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1351 1352 13532) iASL Compiler/Disassembler and Tools: 1354 1355iASL/Table-compiler: Fixed a problem with support for the SPMI table. The 1356first reserved field was incorrectly forced to have a value of zero. This 1357change correctly forces the field to have a value of one. ACPICA BZ 1081. 1358 1359Debugger: Added missing support for the "Extra" and "Data" subobjects 1360when displaying object data. 1361 1362Debugger: Added support to display entire object linked lists when 1363displaying object data. 1364 1365iASL: Removed the obsolete -g option to obtain ACPI tables from the 1366Windows registry. This feature has been superseded by the acpidump 1367utility. 1368 1369---------------------------------------- 137014 January 2014. Summary of changes for version 20140114: 1371 13721) ACPICA kernel-resident subsystem: 1373 1374Updated all ACPICA copyrights and signons to 2014. Added the 2014 1375copyright to all module headers and signons, including the standard Linux 1376header. This affects virtually every file in the ACPICA core subsystem, 1377iASL compiler, all ACPICA utilities, and the test suites. 1378 1379Improved parameter validation for AcpiInstallGpeBlock. Added the 1380following checks: 13811) The incoming device handle refers to type ACPI_TYPE_DEVICE. 13822) There is not already a GPE block attached to the device. 1383Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a 1384device. 1385 1386Correctly support "references" in the ACPI_OBJECT. This change fixes the 1387support to allow references (namespace nodes) to be passed as arguments 1388to control methods via the evaluate object interface. This is probably 1389most useful for testing purposes, however. 1390 1391Improved support for 32/64 bit physical addresses in printf()-like 1392output. This change improves the support for physical addresses in printf 1393debug statements and other output on both 32-bit and 64-bit hosts. It 1394consistently outputs the appropriate number of bytes for each host. The 1395%p specifier is unsatisfactory since it does not emit uniform output on 1396all hosts/clib implementations (on some, leading zeros are not supported, 1397leading to difficult-to-read output). 1398 1399Example Code and Data Size: These are the sizes for the OS-independent 1400acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1401debug version of the code includes the debug output trace mechanism and 1402has a much larger code and data size. 1403 1404 Current Release: 1405 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total 1406 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total 1407 Previous Release: 1408 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1409 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1410 1411 14122) iASL Compiler/Disassembler and Tools: 1413 1414iASL: Fix a possible fault when using the Connection() operator. Fixes a 1415problem if the parent Field definition for the Connection operator refers 1416to an operation region that does not exist. ACPICA BZ 1064. 1417 1418AcpiExec: Load of local test tables is now optional. The utility has the 1419capability to load some various tables to test features of ACPICA. 1420However, there are enough of them that the output of the utility became 1421confusing. With this change, only the required local tables are displayed 1422(RSDP, XSDT, etc.) along with the actual tables loaded via the command 1423line specification. This makes the default output simler and easier to 1424understand. The -el command line option restores the original behavior 1425for testing purposes. 1426 1427AcpiExec: Added support for overlapping operation regions. This change 1428expands the simulation of operation regions by supporting regions that 1429overlap within the given address space. Supports SystemMemory and 1430SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031. 1431 1432AcpiExec: Added region handler support for PCI_Config and EC spaces. This 1433allows AcpiExec to simulate these address spaces, similar to the current 1434support for SystemMemory and SystemIO. 1435 1436Debugger: Added new command to read/write/compare all namespace objects. 1437The command "test objects" will exercise the entire namespace by writing 1438new values to each data object, and ensuring that the write was 1439successful. The original value is then restored and verified. 1440 1441Debugger: Added the "test predefined" command. This change makes this 1442test public and puts it under the new "test" command. The test executes 1443each and every predefined name within the current namespace. 1444 1445---------------------------------------- 144618 December 2013. Summary of changes for version 20131218: 1447 1448Global note: The ACPI 5.0A specification was released this month. There 1449are no changes needed for ACPICA since this release of ACPI is an 1450errata/clarification release. The specification is available at 1451acpi.info. 1452 1453 14541) ACPICA kernel-resident subsystem: 1455 1456Added validation of the XSDT root table if it is present. Some older 1457platforms contain an XSDT that is ill-formed or otherwise invalid (such 1458as containing some or all entries that are NULL pointers). This change 1459adds a new function to validate the XSDT before actually using it. If the 1460XSDT is found to be invalid, ACPICA will now automatically fall back to 1461using the RSDT instead. Original implementation by Zhao Yakui. Ported to 1462ACPICA and enhanced by Lv Zheng and Bob Moore. 1463 1464Added a runtime option to ignore the XSDT and force the use of the RSDT. 1465This change adds a runtime option that will force ACPICA to use the RSDT 1466instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec 1467requires that an XSDT be used instead of the RSDT, the XSDT has been 1468found to be corrupt or ill-formed on some machines. Lv Zheng. 1469 1470Added a runtime option to favor 32-bit FADT register addresses over the 147164-bit addresses. This change adds an option to favor 32-bit FADT 1472addresses when there is a conflict between the 32-bit and 64-bit versions 1473of the same register. The default behavior is to use the 64-bit version 1474in accordance with the ACPI specification. This can now be overridden via 1475the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng. 1476 1477During the change above, the internal "Convert FADT" and "Verify FADT" 1478functions have been merged to simplify the code, making it easier to 1479understand and maintain. ACPICA BZ 933. 1480 1481Improve exception reporting and handling for GPE block installation. 1482Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the 1483status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019. 1484 1485Added helper macros to extract bus/segment numbers from the HEST table. 1486This change adds two macros to extract the encoded bus and segment 1487numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT. 1488Betty Dall <betty.dall@hp.com> 1489 1490Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used 1491by ACPICA. It is not a public macro, so it should have no effect on 1492existing OSV code. Lv Zheng. 1493 1494Example Code and Data Size: These are the sizes for the OS-independent 1495acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1496debug version of the code includes the debug output trace mechanism and 1497has a much larger code and data size. 1498 1499 Current Release: 1500 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total 1501 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total 1502 Previous Release: 1503 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1504 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1505 1506 15072) iASL Compiler/Disassembler and Tools: 1508 1509Disassembler: Improved pathname support for emitted External() 1510statements. This change adds full pathname support for external names 1511that have been resolved internally by the inclusion of additional ACPI 1512tables (via the iASL -e option). Without this change, the disassembler 1513can emit multiple externals for the same object, or it become confused 1514when the Scope() operator is used on an external object. Overall, greatly 1515improves the ability to actually recompile the emitted ASL code when 1516objects a referenced across multiple ACPI tables. Reported by Michael 1517Tsirkin (mst@redhat.com). 1518 1519Tests/ASLTS: Updated functional control suite to execute with no errors. 1520David Box. Fixed several errors related to the testing of the interpreter 1521slack mode. Lv Zheng. 1522 1523iASL: Added support to detect names that are declared within a control 1524method, but are unused (these are temporary names that are only valid 1525during the time the method is executing). A remark is issued for these 1526cases. ACPICA BZ 1022. 1527 1528iASL: Added full support for the DBG2 table. Adds full disassembler, 1529table compiler, and template generator support for the DBG2 table (Debug 1530Port 2 table). 1531 1532iASL: Added full support for the PCCT table, update the table definition. 1533Updates the PCCT table definition in the actbl3.h header and adds table 1534compiler and template generator support. 1535 1536iASL: Added an option to emit only error messages (no warnings/remarks). 1537The -ve option will enable only error messages, warnings and remarks are 1538suppressed. This can simplify debugging when only the errors are 1539important, such as when an ACPI table is disassembled and there are many 1540warnings and remarks -- but only the actual errors are of real interest. 1541 1542Example ACPICA code (source/tools/examples): Updated the example code so 1543that it builds to an actual working program, not just example code. Added 1544ACPI tables and execution of an example control method in the DSDT. Added 1545makefile support for Unix generation. 1546 1547---------------------------------------- 154815 November 2013. Summary of changes for version 20131115: 1549 1550This release is available at https://acpica.org/downloads 1551 1552 15531) ACPICA kernel-resident subsystem: 1554 1555Resource Manager: Fixed loop termination for the "get AML length" 1556function. The loop previously had an error termination on a NULL resource 1557pointer, which can never happen since the loop simply increments a valid 1558resource pointer. This fix changes the loop to terminate with an error on 1559an invalid end-of-buffer condition. The problem can be seen as an 1560infinite loop by callers to AcpiSetCurrentResources with an invalid or 1561corrupted resource descriptor, or a resource descriptor that is missing 1562an END_TAG descriptor. Reported by Dan Carpenter 1563<dan.carpenter@oracle.com>. Lv Zheng, Bob Moore. 1564 1565Table unload and ACPICA termination: Delete all attached data objects 1566during namespace node deletion. This fix updates namespace node deletion 1567to delete the entire list of attached objects (attached via 1568AcpiAttachObject) instead of just one of the attached items. ACPICA BZ 15691024. Tomasz Nowicki (tomasz.nowicki@linaro.org). 1570 1571ACPICA termination: Added support to delete all objects attached to the 1572root namespace node. This fix deletes any and all objects that have been 1573attached to the root node via AcpiAttachData. Previously, none of these 1574objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026. 1575 1576Debug output: Do not emit the function nesting level for the in-kernel 1577build. The nesting level is really only useful during a single-thread 1578execution. Therefore, only enable this output for the AcpiExec utility. 1579Also, only emit the thread ID when executing under AcpiExec (Context 1580switches are still always detected and a message is emitted). ACPICA BZ 1581972. 1582 1583Example Code and Data Size: These are the sizes for the OS-independent 1584acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1585debug version of the code includes the debug output trace mechanism and 1586has a much larger code and data size. 1587 1588 Current Release: 1589 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total 1590 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total 1591 Previous Release: 1592 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1593 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1594 1595 15962) iASL Compiler/Disassembler and Tools: 1597 1598AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the 1599correct portable POSIX header for terminal control functions. 1600 1601Disassembler: Fixed control method invocation issues related to the use 1602of the CondRefOf() operator. The problem is seen in the disassembly where 1603control method invocations may not be disassembled properly if the 1604control method name has been used previously as an argument to CondRefOf. 1605The solution is to not attempt to emit an external declaration for the 1606CondRefOf target (it is not necessary in the first place). This prevents 1607disassembler object type confusion. ACPICA BZ 988. 1608 1609Unix Makefiles: Added an option to disable compiler optimizations and the 1610_FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA 1611with optimizations (reportedly, gcc 4.4 for example). This change adds a 1612command line option for make (NOOPT) that disables all compiler 1613optimizations and the _FORTIFY_SOURCE compiler flag. The default 1614optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ 16151034. Lv Zheng, Bob Moore. 1616 1617Tests/ASLTS: Added options to specify individual test cases and modes. 1618This allows testers running aslts.sh to optionally specify individual 1619test modes and test cases. Also added an option to disable the forced 1620generation of the ACPICA tools from source if desired. Lv Zheng. 1621 1622---------------------------------------- 162327 September 2013. Summary of changes for version 20130927: 1624 1625This release is available at https://acpica.org/downloads 1626 1627 16281) ACPICA kernel-resident subsystem: 1629 1630Fixed a problem with store operations to reference objects. This change 1631fixes a problem where a Store operation to an ArgX object that contained 1632a 1633reference to a field object did not complete the automatic dereference 1634and 1635then write to the actual field object. Instead, the object type of the 1636field object was inadvertently changed to match the type of the source 1637operand. The new behavior will actually write to the field object (buffer 1638field or field unit), thus matching the correct ACPI-defined behavior. 1639 1640Implemented support to allow the host to redefine individual OSL 1641prototypes. This change enables the host to redefine OSL prototypes found 1642in the acpiosxf.h file. This allows the host to implement OSL interfaces 1643with a macro or inlined function. Further, it allows the host to add any 1644additional required modifiers such as __iomem, __init, __exit, etc., as 1645necessary on a per-interface basis. Enables maximum flexibility for the 1646OSL interfaces. Lv Zheng. 1647 1648Hardcoded the access width for the FADT-defined reset register. The ACPI 1649specification requires the reset register width to be 8 bits. ACPICA now 1650hardcodes the width to 8 and ignores the FADT width value. This provides 1651compatibility with other ACPI implementations that have allowed BIOS code 1652with bad register width values to go unnoticed. Matthew Garett, Bob 1653Moore, 1654Lv Zheng. 1655 1656Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is 1657used 1658in the OSL header (acpiosxf). The change modifies the position of this 1659macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid 1660build issues if the OSL defines the implementation of the interface to be 1661an inline stub function. Lv Zheng. 1662 1663Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA 1664initialization interfaces. This change adds a new macro for the main init 1665and terminate external interfaces in order to support hosts that require 1666additional or different processing for these functions. Changed from 1667ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv 1668Zheng, Bob Moore. 1669 1670Cleaned up the memory allocation macros for configurability. In the 1671common 1672case, the ACPI_ALLOCATE and related macros now resolve directly to their 1673respective AcpiOs* OSL interfaces. Two options: 16741) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by 1675default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define. 16762) For AcpiExec (and for debugging), the macros can optionally be 1677resolved 1678to the local ACPICA interfaces that track each allocation (local tracking 1679is used to immediately detect memory leaks). 1680Lv Zheng. 1681 1682Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel 1683to predefine this macro to either TRUE or FALSE during the system build. 1684 1685Replaced __FUNCTION_ with __func__ in the gcc-specific header. 1686 1687Example Code and Data Size: These are the sizes for the OS-independent 1688acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1689debug version of the code includes the debug output trace mechanism and 1690has a much larger code and data size. 1691 1692 Current Release: 1693 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total 1694 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total 1695 Previous Release: 1696 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1697 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1698 1699 17002) iASL Compiler/Disassembler and Tools: 1701 1702iASL: Implemented wildcard support for the -e option. This simplifies use 1703when there are many SSDTs that must be included to resolve external 1704method 1705declarations. ACPICA BZ 1041. Example: 1706 iasl -e ssdt*.dat -d dsdt.dat 1707 1708AcpiExec: Add history/line-editing for Unix/Linux systems. This change 1709adds a portable module that implements full history and limited line 1710editing for Unix and Linux systems. It does not use readline() due to 1711portability issues. Instead it uses the POSIX termio interface to put the 1712terminal in raw input mode so that the various special keys can be 1713trapped 1714(such as up/down-arrow for history support and left/right-arrow for line 1715editing). Uses the existing debugger history mechanism. ACPICA BZ 1036. 1716 1717AcpiXtract: Add support to handle (ignore) "empty" lines containing only 1718one or more spaces. This provides compatible with early or different 1719versions of the AcpiDump utility. ACPICA BZ 1044. 1720 1721AcpiDump: Do not ignore tables that contain only an ACPI table header. 1722Apparently, some BIOSs create SSDTs that contain an ACPI table header but 1723no other data. This change adds support to dump these tables. Any tables 1724shorter than the length of an ACPI table header remain in error (an error 1725message is emitted). Reported by Yi Li. 1726 1727Debugger: Echo actual command along with the "unknown command" message. 1728 1729---------------------------------------- 173023 August 2013. Summary of changes for version 20130823: 1731 17321) ACPICA kernel-resident subsystem: 1733 1734Implemented support for host-installed System Control Interrupt (SCI) 1735handlers. Certain ACPI functionality requires the host to handle raw 1736SCIs. For example, the "SCI Doorbell" that is defined for memory power 1737state support requires the host device driver to handle SCIs to examine 1738if the doorbell has been activated. Multiple SCI handlers can be 1739installed to allow for future expansion. New external interfaces are 1740AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for 1741details. Lv Zheng, Bob Moore. ACPICA BZ 1032. 1742 1743Operation region support: Never locally free the handler "context" 1744pointer. This change removes some dangerous code that attempts to free 1745the handler context pointer in some (rare) circumstances. The owner of 1746the handler owns this pointer and the ACPICA code should never touch it. 1747Although not seen to be an issue in any kernel, it did show up as a 1748problem (fault) under AcpiExec. Also, set the internal storage field for 1749the context pointer to zero when the region is deactivated, simply for 1750sanity. David Box. ACPICA BZ 1039. 1751 1752AcpiRead: On error, do not modify the return value target location. If an 1753error happens in the middle of a split 32/32 64-bit I/O operation, do not 1754modify the target of the return value pointer. Makes the code consistent 1755with the rest of ACPICA. Bjorn Helgaas. 1756 1757Example Code and Data Size: These are the sizes for the OS-independent 1758acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1759debug version of the code includes the debug output trace mechanism and 1760has a much larger code and data size. 1761 1762 Current Release: 1763 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total 1764 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1765 Previous Release: 1766 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1767 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total 1768 1769 17702) iASL Compiler/Disassembler and Tools: 1771 1772AcpiDump: Implemented several new features and fixed some problems: 17731) Added support to dump the RSDP, RSDT, and XSDT tables. 17742) Added support for multiple table instances (SSDT, UEFI). 17753) Added option to dump "customized" (overridden) tables (-c). 17764) Fixed a problem where some table filenames were improperly 1777constructed. 17785) Improved some error messages, removed some unnecessary messages. 1779 1780iASL: Implemented additional support for disassembly of ACPI tables that 1781contain invocations of external control methods. The -fe<file> option 1782allows the import of a file that specifies the external methods along 1783with the required number of arguments for each -- allowing for the 1784correct disassembly of the table. This is a workaround for a limitation 1785of AML code where the disassembler often cannot determine the number of 1786arguments required for an external control method and generates incorrect 1787ASL code. See the iASL reference for details. ACPICA BZ 1030. 1788 1789Debugger: Implemented a new command (paths) that displays the full 1790pathnames (namepaths) and object types of all objects in the namespace. 1791This is an alternative to the namespace command. 1792 1793Debugger: Implemented a new command (sci) that invokes the SCI dispatch 1794mechanism and any installed handlers. 1795 1796iASL: Fixed a possible segfault for "too many parent prefixes" condition. 1797This can occur if there are too many parent prefixes in a namepath (for 1798example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035. 1799 1800Application OSLs: Set the return value for the PCI read functions. These 1801functions simply return AE_OK, but should set the return value to zero 1802also. This change implements this. ACPICA BZ 1038. 1803 1804Debugger: Prevent possible command line buffer overflow. Increase the 1805size of a couple of the debugger line buffers, and ensure that overflow 1806cannot happen. ACPICA BZ 1037. 1807 1808iASL: Changed to abort immediately on serious errors during the parsing 1809phase. Due to the nature of ASL, there is no point in attempting to 1810compile these types of errors, and they typically end up causing a 1811cascade of hundreds of errors which obscure the original problem. 1812 1813---------------------------------------- 181425 July 2013. Summary of changes for version 20130725: 1815 18161) ACPICA kernel-resident subsystem: 1817 1818Fixed a problem with the DerefOf operator where references to FieldUnits 1819and BufferFields incorrectly returned the parent object, not the actual 1820value of the object. After this change, a dereference of a FieldUnit 1821reference results in a read operation on the field to get the value, and 1822likewise, the appropriate BufferField value is extracted from the target 1823buffer. 1824 1825Fixed a problem where the _WAK method could cause a fault under these 1826circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK 1827method returned no value. The problem is rarely seen because most kernels 1828run ACPICA in slack mode. 1829 1830For the DerefOf operator, a fatal error now results if an attempt is made 1831to dereference a reference (created by the Index operator) to a NULL 1832package element. Provides compatibility with other ACPI implementations, 1833and this behavior will be added to a future version of the ACPI 1834specification. 1835 1836The ACPI Power Management Timer (defined in the FADT) is now optional. 1837This provides compatibility with other ACPI implementations and will 1838appear in the next version of the ACPI specification. If there is no PM 1839Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of 1840zero in the FADT indicates no PM timer. 1841 1842Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This 1843allows the host to globally enable/disable all vendor strings, all 1844feature strings, or both. Intended to be primarily used for debugging 1845purposes only. Lv Zheng. 1846 1847Expose the collected _OSI data to the host via a global variable. This 1848data tracks the highest level vendor ID that has been invoked by the BIOS 1849so that the host (and potentially ACPICA itself) can change behaviors 1850based upon the age of the BIOS. 1851 1852Example Code and Data Size: These are the sizes for the OS-independent 1853acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1854debug version of the code includes the debug output trace mechanism and 1855has a much larger code and data size. 1856 1857 Current Release: 1858 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total 1859 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total 1860 Previous Release: 1861 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1862 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1863 1864 18652) iASL Compiler/Disassembler and Tools: 1866 1867iASL: Created the following enhancements for the -so option (create 1868offset table): 18691)Add offsets for the last nameseg in each namepath for every supported 1870object type 18712)Add support for Processor, Device, Thermal Zone, and Scope objects 18723)Add the actual AML opcode for the parent object of every supported 1873object type 18744)Add support for the ZERO/ONE/ONES AML opcodes for integer objects 1875 1876Disassembler: Emit all unresolved external symbols in a single block. 1877These are external references to control methods that could not be 1878resolved, and thus, the disassembler had to make a guess at the number of 1879arguments to parse. 1880 1881iASL: The argument to the -T option (create table template) is now 1882optional. If not specified, the default table is a DSDT, typically the 1883most common case. 1884 1885---------------------------------------- 188626 June 2013. Summary of changes for version 20130626: 1887 18881) ACPICA kernel-resident subsystem: 1889 1890Fixed an issue with runtime repair of the _CST object. Null or invalid 1891elements were not always removed properly. Lv Zheng. 1892 1893Removed an arbitrary restriction of 256 GPEs per GPE block (such as the 1894FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device, 1895the maximum number of GPEs is 1016. Use of multiple GPE block devices 1896makes the system-wide number of GPEs essentially unlimited. 1897 1898Example Code and Data Size: These are the sizes for the OS-independent 1899acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1900debug version of the code includes the debug output trace mechanism and 1901has a much larger code and data size. 1902 1903 Current Release: 1904 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total 1905 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total 1906 Previous Release: 1907 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1908 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 1909 1910 19112) iASL Compiler/Disassembler and Tools: 1912 1913Portable AcpiDump: Implemented full support for the Linux and FreeBSD 1914hosts. Now supports Linux, FreeBSD, and Windows. 1915 1916Disassembler: Added some missing types for the HEST and EINJ tables: "Set 1917Error Type With Address", "CMCI", "MCE", and "Flush Cacheline". 1918 1919iASL/Preprocessor: Implemented full support for nested 1920#if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks. 1921 1922Disassembler: Expanded maximum output string length to 64K. Was 256 bytes 1923max. The original purpose of this constraint was to limit the amount of 1924debug output. However, the string function in question (UtPrintString) is 1925now used for the disassembler also, where 256 bytes is insufficient. 1926Reported by RehabMan@GitHub. 1927 1928iASL/DataTables: Fixed some problems and issues with compilation of DMAR 1929tables. ACPICA BZ 999. Lv Zheng. 1930 1931iASL: Fixed a couple of error exit issues that could result in a "Could 1932not delete <file>" message during ASL compilation. 1933 1934AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though 1935the actual signatures for these tables are "FACP" and "APIC", 1936respectively. 1937 1938AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI 1939tables are allowed to have multiple instances. 1940 1941---------------------------------------- 194217 May 2013. Summary of changes for version 20130517: 1943 19441) ACPICA kernel-resident subsystem: 1945 1946Fixed a regression introduced in version 20130328 for _INI methods. This 1947change fixes a problem introduced in 20130328 where _INI methods are no 1948longer executed properly because of a memory block that was not 1949initialized correctly. ACPICA BZ 1016. Tomasz Nowicki 1950<tomasz.nowicki@linaro.org>. 1951 1952Fixed a possible problem with the new extended sleep registers in the 1953ACPI 19545.0 FADT. Do not use these registers (even if populated) unless the HW- 1955reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ 19561020. Lv Zheng. 1957 1958Implemented return value repair code for _CST predefined objects: Sort 1959the 1960list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng. 1961 1962Implemented a debug-only option to disable loading of SSDTs from the 1963RSDT/XSDT during ACPICA initialization. This can be useful for debugging 1964ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in 1965acglobal.h - ACPICA BZ 1005. Lv Zheng. 1966 1967Fixed some issues in the ACPICA initialization and termination code: 1968Tomasz Nowicki <tomasz.nowicki@linaro.org> 19691) Clear events initialized flag upon event component termination. ACPICA 1970BZ 1013. 19712) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018. 19723) Delete global lock pending lock during termination. ACPICA BZ 1012. 19734) Clear debug buffer global on termination to prevent possible multiple 1974delete. ACPICA BZ 1010. 1975 1976Standardized all switch() blocks across the entire source base. After 1977many 1978years, different formatting for switch() had crept in. This change makes 1979the formatting of every switch block identical. ACPICA BZ 997. Chao Guan. 1980 1981Split some files to enhance ACPICA modularity and configurability: 19821) Split buffer dump routines into utilities/utbuffer.c 19832) Split internal error message routines into utilities/uterror.c 19843) Split table print utilities into tables/tbprint.c 19854) Split iASL command-line option processing into asloptions.c 1986 1987Makefile enhancements: 19881) Support for all new files above. 19892) Abort make on errors from any subcomponent. Chao Guan. 19903) Add build support for Apple Mac OS X. Liang Qi. 1991 1992Example Code and Data Size: These are the sizes for the OS-independent 1993acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 1994debug version of the code includes the debug output trace mechanism and 1995has a much larger code and data size. 1996 1997 Current Release: 1998 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total 1999 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total 2000 Previous Release: 2001 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2002 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2003 2004 20052) iASL Compiler/Disassembler and Tools: 2006 2007New utility: Implemented an easily portable version of the acpidump 2008utility to extract ACPI tables from the system (or a file) in an ASCII 2009hex 2010dump format. The top-level code implements the various command line 2011options, file I/O, and table dump routines. To port to a new host, only 2012three functions need to be implemented to get tables -- since this 2013functionality is OS-dependent. See the tools/acpidump/apmain.c module and 2014the ACPICA reference for porting instructions. ACPICA BZ 859. Notes: 20151) The Windows version obtains the ACPI tables from the Registry. 20162) The Linux version is under development. 20173) Other hosts - If an OS-dependent module is submitted, it will be 2018distributed with ACPICA. 2019 2020iASL: Fixed a regression for -D preprocessor option (define symbol). A 2021restructuring/change to the initialization sequence caused this option to 2022no longer work properly. 2023 2024iASL: Implemented a mechanism to disable specific warnings and remarks. 2025Adds a new command line option, "-vw <messageid> as well as "#pragma 2026disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore. 2027 2028iASL: Fix for too-strict package object validation. The package object 2029validation for return values from the predefined names is a bit too 2030strict, it does not allow names references within the package (which will 2031be resolved at runtime.) These types of references cannot be validated at 2032compile time. This change ignores named references within package objects 2033for names that return or define static packages. 2034 2035Debugger: Fixed the 80-character command line limitation for the History 2036command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan. 2037 2038iASL: Added control method and package support for the -so option 2039(generates AML offset table for BIOS support.) 2040 2041iASL: issue a remark if a non-serialized method creates named objects. If 2042a thread blocks within the method for any reason, and another thread 2043enters the method, the method will fail because an attempt will be made 2044to 2045create the same (named) object twice. In this case, issue a remark that 2046the method should be marked serialized. NOTE: may become a warning later. 2047ACPICA BZ 909. 2048 2049---------------------------------------- 205018 April 2013. Summary of changes for version 20130418: 2051 20521) ACPICA kernel-resident subsystem: 2053 2054Fixed a possible buffer overrun during some rare but specific field unit 2055read operations. This overrun can only happen if the DSDT version is 1 -- 2056meaning that all AML integers are 32 bits -- and the field length is 2057between 33 and 55 bits long. During the read, an internal buffer object 2058is 2059created for the field unit because the field is larger than an integer 2060(32 2061bits). However, in this case, the buffer will be incorrectly written 2062beyond the end because the buffer length is less than the internal 2063minimum 2064of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes 2065long, but a full 8 bytes will be written. 2066 2067Updated the Embedded Controller "orphan" _REG method support. This refers 2068to _REG methods under the EC device that have no corresponding operation 2069region. This is allowed by the ACPI specification. This update removes a 2070dependency on the existence an ECDT table. It will execute an orphan _REG 2071method as long as the operation region handler for the EC is installed at 2072the EC device node and not the namespace root. Rui Zhang (original 2073update), Bob Moore (update/integrate). 2074 2075Implemented run-time argument typechecking for all predefined ACPI names 2076(_STA, _BIF, etc.) This change performs object typechecking on all 2077incoming arguments for all predefined names executed via 2078AcpiEvaluateObject. This ensures that ACPI-related device drivers are 2079passing correct object types as well as the correct number of arguments 2080(therefore identifying any issues immediately). Also, the ASL/namespace 2081definition of the predefined name is checked against the ACPI 2082specification for the proper argument count. Adds one new file, 2083nsarguments.c 2084 2085Changed an exception code for the ASL UnLoad() operator. Changed the 2086exception code for the case where the input DdbHandle is invalid, from 2087AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE. 2088 2089Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the 2090global makefile. The use of this flag causes compiler errors on earlier 2091versions of GCC, so it has been removed for compatibility. 2092 2093Miscellaneous cleanup: 20941) Removed some unused/obsolete macros 20952) Fixed a possible memory leak in the _OSI support 20963) Removed an unused variable in the predefined name support 20974) Windows OSL: remove obsolete reference to a memory list field 2098 2099Example Code and Data Size: These are the sizes for the OS-independent 2100acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2101debug version of the code includes the debug output trace mechanism and 2102has a much larger code and data size. 2103 2104 Current Release: 2105 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2106 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2107 Previous Release: 2108 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total 2109 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total 2110 2111 21122) iASL Compiler/Disassembler and Tools: 2113 2114AcpiExec: Added installation of a handler for the SystemCMOS address 2115space. This prevents control method abort if a method accesses this 2116space. 2117 2118AcpiExec: Added support for multiple EC devices, and now install EC 2119operation region handler(s) at the actual EC device instead of the 2120namespace root. This reflects the typical behavior of host operating 2121systems. 2122 2123AcpiExec: Updated to ensure that all operation region handlers are 2124installed before the _REG methods are executed. This prevents a _REG 2125method from aborting if it accesses an address space has no handler. 2126AcpiExec installs a handler for every possible address space. 2127 2128Debugger: Enhanced the "handlers" command to display non-root handlers. 2129This change enhances the handlers command to display handlers associated 2130with individual devices throughout the namespace, in addition to the 2131currently supported display of handlers associated with the root 2132namespace 2133node. 2134 2135ASL Test Suite: Several test suite errors have been identified and 2136resolved, reducing the total error count during execution. Chao Guan. 2137 2138---------------------------------------- 213928 March 2013. Summary of changes for version 20130328: 2140 21411) ACPICA kernel-resident subsystem: 2142 2143Fixed several possible race conditions with the internal object reference 2144counting mechanism. Some of the external ACPICA interfaces update object 2145reference counts without holding the interpreter or namespace lock. This 2146change adds a spinlock to protect reference count updates on the internal 2147ACPICA objects. Reported by and with assistance from Andriy Gapon 2148(avg@FreeBSD.org). 2149 2150FADT support: Removed an extraneous warning for very large GPE register 2151sets. This change removes a size mismatch warning if the legacy length 2152field for a GPE register set is larger than the 64-bit GAS structure can 2153accommodate. GPE register sets can be larger than the 255-bit width 2154limitation of the GAS structure. Linn Crosetto (linn@hp.com). 2155 2156_OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error 2157return from this interface. Handles a possible timeout case if 2158ACPI_WAIT_FOREVER is modified by the host to be a value less than 2159"forever". Jung-uk Kim. 2160 2161Predefined name support: Add allowed/required argument type information 2162to 2163the master predefined info table. This change adds the infrastructure to 2164enable typechecking on incoming arguments for all predefined 2165methods/objects. It does not actually contain the code that will fully 2166utilize this information, this is still under development. Also condenses 2167some duplicate code for the predefined names into a new module, 2168utilities/utpredef.c 2169 2170Example Code and Data Size: These are the sizes for the OS-independent 2171acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2172debug version of the code includes the debug output trace mechanism and 2173has a much larger code and data size. 2174 2175 Previous Release: 2176 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2177 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2178 Current Release: 2179 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total 2180 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total 2181 2182 21832) iASL Compiler/Disassembler and Tools: 2184 2185iASL: Implemented a new option to simplify the development of ACPI- 2186related 2187BIOS code. Adds support for a new "offset table" output file. The -so 2188option will create a C table containing the AML table offsets of various 2189named objects in the namespace so that BIOS code can modify them easily 2190at 2191boot time. This can simplify BIOS runtime code by eliminating expensive 2192searches for "magic values", enhancing boot times and adding greater 2193reliability. With assistance from Lee Hamel. 2194 2195iASL: Allow additional predefined names to return zero-length packages. 2196Now, all predefined names that are defined by the ACPI specification to 2197return a "variable-length package of packages" are allowed to return a 2198zero length top-level package. This allows the BIOS to tell the host that 2199the requested feature is not supported, and supports existing BIOS/ASL 2200code and practices. 2201 2202iASL: Changed the "result not used" warning to an error. This is the case 2203where an ASL operator is effectively a NOOP because the result of the 2204operation is not stored anywhere. For example: 2205 Add (4, Local0) 2206There is no target (missing 3rd argument), nor is the function return 2207value used. This is potentially a very serious problem -- since the code 2208was probably intended to do something, but for whatever reason, the value 2209was not stored. Therefore, this issue has been upgraded from a warning to 2210an error. 2211 2212AcpiHelp: Added allowable/required argument types to the predefined names 2213info display. This feature utilizes the recent update to the predefined 2214names table (above). 2215 2216---------------------------------------- 221714 February 2013. Summary of changes for version 20130214: 2218 22191) ACPICA Kernel-resident Subsystem: 2220 2221Fixed a possible regression on some hosts: Reinstated the safe return 2222macros (return_ACPI_STATUS, etc.) that ensure that the argument is 2223evaluated only once. Although these macros are not needed for the ACPICA 2224code itself, they are often used by ACPI-related host device drivers 2225where 2226the safe feature may be necessary. 2227 2228Fixed several issues related to the ACPI 5.0 reduced hardware support 2229(SOC): Now ensure that if the platform declares itself as hardware- 2230reduced 2231via the FADT, the following functions become NOOPs (and always return 2232AE_OK) because ACPI is always enabled by definition on these machines: 2233 AcpiEnable 2234 AcpiDisable 2235 AcpiHwGetMode 2236 AcpiHwSetMode 2237 2238Dynamic Object Repair: Implemented additional runtime repairs for 2239predefined name return values. Both of these repairs can simplify code in 2240the related device drivers that invoke these methods: 22411) For the _STR and _MLS names, automatically repair/convert an ASCII 2242string to a Unicode buffer. 22432) For the _CRS, _PRS, and _DMA names, return a resource descriptor with 2244a 2245lone end tag descriptor in the following cases: A Return(0) was executed, 2246a null buffer was returned, or no object at all was returned (non-slack 2247mode only). Adds a new file, nsconvert.c 2248ACPICA BZ 998. Bob Moore, Lv Zheng. 2249 2250Resource Manager: Added additional code to prevent possible infinite 2251loops 2252while traversing corrupted or ill-formed resource template buffers. Check 2253for zero-length resource descriptors in all code that loops through 2254resource templates (the length field is used to index through the 2255template). This change also hardens the external AcpiWalkResources and 2256AcpiWalkResourceBuffer interfaces. 2257 2258Local Cache Manager: Enhanced the main data structure to eliminate an 2259unnecessary mechanism to access the next object in the list. Actually 2260provides a small performance enhancement for hosts that use the local 2261ACPICA cache manager. Jung-uk Kim. 2262 2263Example Code and Data Size: These are the sizes for the OS-independent 2264acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2265debug version of the code includes the debug output trace mechanism and 2266has a much larger code and data size. 2267 2268 Previous Release: 2269 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2270 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2271 Current Release: 2272 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total 2273 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total 2274 2275 22762) iASL Compiler/Disassembler and Tools: 2277 2278iASL/Disassembler: Fixed several issues with the definition of the ACPI 22795.0 RASF table (RAS Feature Table). This change incorporates late changes 2280that were made to the ACPI 5.0 specification. 2281 2282iASL/Disassembler: Added full support for the following new ACPI tables: 2283 1) The MTMR table (MID Timer Table) 2284 2) The VRTC table (Virtual Real Time Clock Table). 2285Includes header file, disassembler, table compiler, and template support 2286for both tables. 2287 2288iASL: Implemented compile-time validation of package objects returned by 2289predefined names. This new feature validates static package objects 2290returned by the various predefined names defined to return packages. Both 2291object types and package lengths are validated, for both parent packages 2292and sub-packages, if any. The code is similar in structure and behavior 2293to 2294the runtime repair mechanism within the AML interpreter and uses the 2295existing predefined name information table. Adds a new file, aslprepkg.c. 2296ACPICA BZ 938. 2297 2298iASL: Implemented auto-detection of binary ACPI tables for disassembly. 2299This feature detects a binary file with a valid ACPI table header and 2300invokes the disassembler automatically. Eliminates the need to 2301specifically invoke the disassembler with the -d option. ACPICA BZ 862. 2302 2303iASL/Disassembler: Added several warnings for the case where there are 2304unresolved control methods during the disassembly. This can potentially 2305cause errors when the output file is compiled, because the disassembler 2306assumes zero method arguments in these cases (it cannot determine the 2307actual number of arguments without resolution/definition of the method). 2308 2309Debugger: Added support to display all resources with a single command. 2310Invocation of the resources command with no arguments will now display 2311all 2312resources within the current namespace. 2313 2314AcpiHelp: Added descriptive text for each ACPICA exception code displayed 2315via the -e option. 2316 2317---------------------------------------- 231817 January 2013. Summary of changes for version 20130117: 2319 23201) ACPICA Kernel-resident Subsystem: 2321 2322Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to 2323return either 1 or 2 integers. Although the ACPI spec defines the \_Sx 2324objects to return a package containing one integer, most BIOS code 2325returns 2326two integers and the previous code reflects that. However, we also need 2327to 2328support BIOS code that actually implements to the ACPI spec, and this 2329change reflects this. 2330 2331Fixed two issues with the ACPI_DEBUG_PRINT macros: 23321) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for 2333C compilers that require this support. 23342) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since 2335ACPI_DEBUG is already used by many of the various hosts. 2336 2337Updated all ACPICA copyrights and signons to 2013. Added the 2013 2338copyright to all module headers and signons, including the standard Linux 2339header. This affects virtually every file in the ACPICA core subsystem, 2340iASL compiler, all ACPICA utilities, and the test suites. 2341 2342Example Code and Data Size: These are the sizes for the OS-independent 2343acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2344debug version of the code includes the debug output trace mechanism and 2345has a much larger code and data size. 2346 2347 Previous Release: 2348 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2349 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2350 Current Release: 2351 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total 2352 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total 2353 2354 23552) iASL Compiler/Disassembler and Tools: 2356 2357Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and 2358prevent a possible fault on some hosts. Some C libraries modify the arg 2359pointer parameter to vfprintf making it difficult to call it twice in the 2360AcpiOsVprintf function. Use a local buffer to workaround this issue. This 2361does not affect the Windows OSL since the Win C library does not modify 2362the arg pointer. Chao Guan, Bob Moore. 2363 2364iASL: Fixed a possible infinite loop when the maximum error count is 2365reached. If an output file other than the .AML file is specified (such as 2366a listing file), and the maximum number of errors is reached, do not 2367attempt to flush data to the output file(s) as the compiler is aborting. 2368This can cause an infinite loop as the max error count code essentially 2369keeps calling itself. 2370 2371iASL/Disassembler: Added an option (-in) to ignore NOOP 2372opcodes/operators. 2373Implemented for both the compiler and the disassembler. Often, the NOOP 2374opcode is used as padding for packages that are changed dynamically by 2375the 2376BIOS. When disassembled and recompiled, these NOOPs will cause syntax 2377errors. This option causes the disassembler to ignore all NOOP opcodes 2378(0xA3), and it also causes the compiler to ignore all ASL source code 2379NOOP 2380statements as well. 2381 2382Debugger: Enhanced the Sleep command to execute all sleep states. This 2383change allows Sleep to be invoked with no arguments and causes the 2384debugger to execute all of the sleep states, 0-5, automatically. 2385 2386---------------------------------------- 238720 December 2012. Summary of changes for version 20121220: 2388 23891) ACPICA Kernel-resident Subsystem: 2390 2391Implemented a new interface, AcpiWalkResourceBuffer. This interface is an 2392alternate entry point for AcpiWalkResources and improves the usability of 2393the resource manager by accepting as input a buffer containing the output 2394of either a _CRS, _PRS, or _AEI method. The key functionality is that the 2395input buffer is not deleted by this interface so that it can be used by 2396the host later. See the ACPICA reference for details. 2397 2398Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table 2399(DSDT version < 2). The constant will be truncated and this warning 2400reflects that behavior. 2401 2402Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ, 2403ExtendedInterrupt, and GpioInt descriptors. This change adds support to 2404both get and set the new wake bit in these descriptors, separately from 2405the existing share bit. Reported by Aaron Lu. 2406 2407Interpreter: Fix Store() when an implicit conversion is not possible. For 2408example, in the cases such as a store of a string to an existing package 2409object, implement the store as a CopyObject(). This is a small departure 2410from the ACPI specification which states that the control method should 2411be 2412aborted in this case. However, the ASLTS suite depends on this behavior. 2413 2414Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT 2415macros: check if debug output is currently enabled as soon as possible to 2416minimize performance impact if debug is in fact not enabled. 2417 2418Source code restructuring: Cleanup to improve modularity. The following 2419new files have been added: dbconvert.c, evhandler.c, nsprepkg.c, 2420psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c. 2421Associated makefiles and project files have been updated. 2422 2423Changed an exception code for LoadTable operator. For the case where one 2424of the input strings is too long, change the returned exception code from 2425AE_BAD_PARAMETER to AE_AML_STRING_LIMIT. 2426 2427Fixed a possible memory leak in dispatcher error path. On error, delete 2428the mutex object created during method mutex creation. Reported by 2429tim.gardner@canonical.com. 2430 2431Example Code and Data Size: These are the sizes for the OS-independent 2432acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2433debug version of the code includes the debug output trace mechanism and 2434has a much larger code and data size. 2435 2436 Previous Release: 2437 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2438 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2439 Current Release: 2440 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total 2441 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total 2442 2443 24442) iASL Compiler/Disassembler and Tools: 2445 2446iASL: Disallow a method call as argument to the ObjectType ASL operator. 2447This change tracks an errata to the ACPI 5.0 document. The AML grammar 2448will not allow the interpreter to differentiate between a method and a 2449method invocation when these are used as an argument to the ObjectType 2450operator. The ACPI specification change is to disallow a method 2451invocation 2452(UserTerm) for the ObjectType operator. 2453 2454Finish support for the TPM2 and CSRT tables in the headers, table 2455compiler, and disassembler. 2456 2457Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout 2458always expires immediately if the semaphore is not available. The 2459original 2460code was using a relative-time timeout, but sem_timedwait requires the 2461use 2462of an absolute time. 2463 2464iASL: Added a remark if the Timer() operator is used within a 32-bit 2465table. This operator returns a 64-bit time value that will be truncated 2466within a 32-bit table. 2467 2468iASL Source code restructuring: Cleanup to improve modularity. The 2469following new files have been added: aslhex.c, aslxref.c, aslnamesp.c, 2470aslmethod.c, and aslfileio.c. Associated makefiles and project files have 2471been updated. 2472 2473 2474---------------------------------------- 247514 November 2012. Summary of changes for version 20121114: 2476 24771) ACPICA Kernel-resident Subsystem: 2478 2479Implemented a performance enhancement for ACPI/AML Package objects. This 2480change greatly increases the performance of Package objects within the 2481interpreter. It changes the processing of reference counts for packages 2482by 2483optimizing for the most common case where the package sub-objects are 2484either Integers, Strings, or Buffers. Increases the overall performance 2485of 2486the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 24872X.) 2488Chao Guan. ACPICA BZ 943. 2489 2490Implemented and deployed common macros to extract flag bits from resource 2491descriptors. Improves readability and maintainability of the code. Fixes 2492a 2493problem with the UART serial bus descriptor for the number of data bits 2494flags (was incorrectly 2 bits, should be 3). 2495 2496Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation 2497of the macros and changed the SETx macros to the style of (destination, 2498source). Also added ACPI_CASTx companion macros. Lv Zheng. 2499 2500Example Code and Data Size: These are the sizes for the OS-independent 2501acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2502debug version of the code includes the debug output trace mechanism and 2503has a much larger code and data size. 2504 2505 Previous Release: 2506 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2507 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2508 Current Release: 2509 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total 2510 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2511 2512 25132) iASL Compiler/Disassembler and Tools: 2514 2515Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change 2516adds the ShareAndWake and ExclusiveAndWake flags which were added to the 2517Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986. 2518 2519Disassembler: Fixed a problem with external declaration generation. Fixes 2520a problem where an incorrect pathname could be generated for an external 2521declaration if the original reference to the object includes leading 2522carats (^). ACPICA BZ 984. 2523 2524Debugger: Completed a major update for the Disassemble<method> command. 2525This command was out-of-date and did not properly disassemble control 2526methods that had any reasonable complexity. This fix brings the command 2527up 2528to the same level as the rest of the disassembler. Adds one new file, 2529dmdeferred.c, which is existing code that is now common with the main 2530disassembler and the debugger disassemble command. ACPICA MZ 978. 2531 2532iASL: Moved the parser entry prototype to avoid a duplicate declaration. 2533Newer versions of Bison emit this prototype, so moved the prototype out 2534of 2535the iASL header to where it is actually used in order to avoid a 2536duplicate 2537declaration. 2538 2539iASL/Tools: Standardized use of the stream I/O functions: 2540 1) Ensure check for I/O error after every fopen/fread/fwrite 2541 2) Ensure proper order of size/count arguments for fread/fwrite 2542 3) Use test of (Actual != Requested) after all fwrite, and most fread 2543 4) Standardize I/O error messages 2544Improves reliability and maintainability of the code. Bob Moore, Lv 2545Zheng. 2546ACPICA BZ 981. 2547 2548Disassembler: Prevent duplicate External() statements. During generation 2549of external statements, detect similar pathnames that are actually 2550duplicates such as these: 2551 External (\ABCD) 2552 External (ABCD) 2553Remove all leading '\' characters from pathnames during the external 2554statement generation so that duplicates will be detected and tossed. 2555ACPICA BZ 985. 2556 2557Tools: Replace low-level I/O with stream I/O functions. Replace 2558open/read/write/close with the stream I/O equivalents 2559fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob 2560Moore. 2561 2562AcpiBin: Fix for the dump-to-hex function. Now correctly output the table 2563name header so that AcpiXtract recognizes the output file/table. 2564 2565iASL: Remove obsolete -2 option flag. Originally intended to force the 2566compiler/disassembler into an ACPI 2.0 mode, this was never implemented 2567and the entire concept is now obsolete. 2568 2569---------------------------------------- 257018 October 2012. Summary of changes for version 20121018: 2571 2572 25731) ACPICA Kernel-resident Subsystem: 2574 2575Updated support for the ACPI 5.0 MPST table. Fixes some problems 2576introduced by late changes to the table as it was added to the ACPI 5.0 2577specification. Includes header, disassembler, and data table compiler 2578support as well as a new version of the MPST template. 2579 2580AcpiGetObjectInfo: Enhanced the device object support to include the ACPI 25815.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID 2582methods: _HID, _CID, and _UID. 2583 2584Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed 2585ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent 2586name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId) 2587names for their various drivers. Affects the AcpiGetObjectInfo external 2588interface, and other internal interfaces as well. 2589 2590Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME. 2591This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME 2592on machines that support non-aligned transfers. Optimizes for this case 2593rather than using a strncpy. With assistance from Zheng Lv. 2594 2595Resource Manager: Small fix for buffer size calculation. Fixed a one byte 2596error in the output buffer calculation. Feng Tang. ACPICA BZ 849. 2597 2598Added a new debug print message for AML mutex objects that are force- 2599released. At control method termination, any currently acquired mutex 2600objects are force-released. Adds a new debug-only message for each one 2601that is released. 2602 2603Audited/updated all ACPICA return macros and the function debug depth 2604counter: 1) Ensure that all functions that use the various TRACE macros 2605also use the appropriate ACPICA return macros. 2) Ensure that all normal 2606return statements surround the return expression (value) with parens to 2607ensure consistency across the ACPICA code base. Guan Chao, Tang Feng, 2608Zheng Lv, Bob Moore. ACPICA Bugzilla 972. 2609 2610Global source code changes/maintenance: All extra lines at the start and 2611end of each source file have been removed for consistency. Also, within 2612comments, all new sentences start with a single space instead of a double 2613space, again for consistency across the code base. 2614 2615Example Code and Data Size: These are the sizes for the OS-independent 2616acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2617debug version of the code includes the debug output trace mechanism and 2618has a much larger code and data size. 2619 2620 Previous Release: 2621 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2622 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2623 Current Release: 2624 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total 2625 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total 2626 2627 26282) iASL Compiler/Disassembler and Tools: 2629 2630AcpiExec: Improved the algorithm used for memory leak/corruption 2631detection. Added some intelligence to the code that maintains the global 2632list of allocated memory. The list is now ordered by allocated memory 2633address, significantly improving performance. When running AcpiExec on 2634the ASLTS test suite, speed improvements of 3X to 5X are seen, depending 2635on the platform and/or the environment. Note, this performance 2636enhancement affects the AcpiExec utility only, not the kernel-resident 2637ACPICA code. 2638 2639Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For 2640the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix 2641incorrect table offset reported for invalid opcodes. Report the original 264232-bit value for bad ACPI_NAMEs (as well as the repaired name.) 2643 2644Disassembler: Enhanced the -vt option to emit the binary table data in 2645hex format to assist with debugging. 2646 2647Fixed a potential filename buffer overflow in osunixdir.c. Increased the 2648size of file structure. Colin Ian King. 2649 2650---------------------------------------- 265113 September 2012. Summary of changes for version 20120913: 2652 2653 26541) ACPICA Kernel-resident Subsystem: 2655 2656ACPI 5.0: Added two new notify types for the Hardware Error Notification 2657Structure within the Hardware Error Source Table (HEST) table -- CMCI(5) 2658and 2659MCE(6). 2660 2661Table Manager: Merged/removed duplicate code in the root table resize 2662functions. One function is external, the other is internal. Lv Zheng, 2663ACPICA 2664BZ 846. 2665 2666Makefiles: Completely removed the obsolete "Linux" makefiles under 2667acpica/generate/linux. These makefiles are obsolete and have been 2668replaced 2669by 2670the generic unix makefiles under acpica/generate/unix. 2671 2672Makefiles: Ensure that binary files always copied properly. Minor rule 2673change 2674to ensure that the final binary output files are always copied up to the 2675appropriate binary directory (bin32 or bin64.) 2676 2677Example Code and Data Size: These are the sizes for the OS-independent 2678acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2679debug 2680version of the code includes the debug output trace mechanism and has a 2681much 2682larger code and data size. 2683 2684 Previous Release: 2685 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2686 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2687 Current Release: 2688 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total 2689 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total 2690 2691 26922) iASL Compiler/Disassembler and Tools: 2693 2694Disassembler: Fixed a possible fault during the disassembly of resource 2695descriptors when a second parse is required because of the invocation of 2696external control methods within the table. With assistance from 2697adq@lidskialf.net. ACPICA BZ 976. 2698 2699iASL: Fixed a namepath optimization problem. An error can occur if the 2700parse 2701node that contains the namepath to be optimized does not have a parent 2702node 2703that is a named object. This change fixes the problem. 2704 2705iASL: Fixed a regression where the AML file is not deleted on errors. The 2706AML 2707output file should be deleted if there are any errors during the 2708compiler. 2709The 2710only exception is if the -f (force output) option is used. ACPICA BZ 974. 2711 2712iASL: Added a feature to automatically increase internal line buffer 2713sizes. 2714Via realloc(), automatically increase the internal line buffer sizes as 2715necessary to support very long source code lines. The current version of 2716the 2717preprocessor requires a buffer long enough to contain full source code 2718lines. 2719This change increases the line buffer(s) if the input lines go beyond the 2720current buffer size. This eliminates errors that occurred when a source 2721code 2722line was longer than the buffer. 2723 2724iASL: Fixed a problem with constant folding in method declarations. The 2725SyncLevel term is a ByteConstExpr, and incorrect code would be generated 2726if a 2727Type3 opcode was used. 2728 2729Debugger: Improved command help support. For incorrect argument count, 2730display 2731full help for the command. For help command itself, allow an argument to 2732specify a command. 2733 2734Test Suites: Several bug fixes for the ASLTS suite reduces the number of 2735errors during execution of the suite. Guan Chao. 2736 2737---------------------------------------- 273816 August 2012. Summary of changes for version 20120816: 2739 2740 27411) ACPICA Kernel-resident Subsystem: 2742 2743Removed all use of the deprecated _GTS and _BFS predefined methods. The 2744_GTS 2745(Going To Sleep) and _BFS (Back From Sleep) methods are essentially 2746deprecated and will probably be removed from the ACPI specification. 2747Windows 2748does not invoke them, and reportedly never will. The final nail in the 2749coffin 2750is that the ACPI specification states that these methods must be run with 2751interrupts off, which is not going to happen in a kernel interpreter. 2752Note: 2753Linux has removed all use of the methods also. It was discovered that 2754invoking these functions caused failures on some machines, probably 2755because 2756they were never tested since Windows does not call them. Affects two 2757external 2758interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng. 2759ACPICA BZ 969. 2760 2761Implemented support for complex bit-packed buffers returned from the _PLD 2762(Physical Location of Device) predefined method. Adds a new external 2763interface, AcpiDecodePldBuffer that parses the buffer into a more usable 2764C 2765structure. Note: C Bitfields cannot be used for this type of predefined 2766structure since the memory layout of individual bitfields is not defined 2767by 2768the C language. In addition, there are endian concerns where a compiler 2769will 2770change the bitfield ordering based on the machine type. The new ACPICA 2771interface eliminates these issues, and should be called after _PLD is 2772executed. ACPICA BZ 954. 2773 2774Implemented a change to allow a scope change to root (via "Scope (\)") 2775during 2776execution of module-level ASL code (code that is executed at table load 2777time.) Lin Ming. 2778 2779Added the Windows8/Server2012 string for the _OSI method. This change 2780adds 2781a 2782new _OSI string, "Windows 2012" for both Windows 8 and Windows Server 27832012. 2784 2785Added header support for the new ACPI tables DBG2 (Debug Port Table Type 27862) 2787and CSRT (Core System Resource Table). 2788 2789Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined 2790names. This simplifies access to the buffers returned by these predefined 2791names. Adds a new file, include/acbuffer.h. ACPICA BZ 956. 2792 2793GPE support: Removed an extraneous parameter from the various low-level 2794internal GPE functions. Tang Feng. 2795 2796Removed the linux makefiles from the unix packages. The generate/linux 2797makefiles are obsolete and have been removed from the unix tarball 2798release 2799packages. The replacement makefiles are under generate/unix, and there is 2800a 2801top-level makefile under the main acpica directory. ACPICA BZ 967, 912. 2802 2803Updates for Unix makefiles: 28041) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven. 28052) Update linker flags (move to end of command line) for AcpiExec 2806utility. 2807Guan Chao. 2808 2809Split ACPICA initialization functions to new file, utxfinit.c. Split from 2810utxface.c to improve modularity and reduce file size. 2811 2812Example Code and Data Size: These are the sizes for the OS-independent 2813acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2814debug version of the code includes the debug output trace mechanism and 2815has a 2816much larger code and data size. 2817 2818 Previous Release: 2819 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2820 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2821 Current Release: 2822 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total 2823 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total 2824 2825 28262) iASL Compiler/Disassembler and Tools: 2827 2828iASL: Fixed a problem with constant folding for fixed-length constant 2829expressions. The constant-folding code was not being invoked for constant 2830expressions that allow the use of type 3/4/5 opcodes to generate 2831constants 2832for expressions such as ByteConstExpr, WordConstExpr, etc. This could 2833result 2834in the generation of invalid AML bytecode. ACPICA BZ 970. 2835 2836iASL: Fixed a generation issue on newer versions of Bison. Newer versions 2837apparently automatically emit some of the necessary externals. This 2838change 2839handles these versions in order to eliminate generation warnings. 2840 2841Disassembler: Added support to decode the DBG2 and CSRT ACPI tables. 2842 2843Disassembler: Add support to decode _PLD buffers. The decoded buffer 2844appears 2845within comments in the output file. 2846 2847Debugger: Fixed a regression with the "Threads" command where 2848AE_BAD_PARAMETER was always returned. 2849 2850---------------------------------------- 285111 July 2012. Summary of changes for version 20120711: 2852 28531) ACPICA Kernel-resident Subsystem: 2854 2855Fixed a possible fault in the return package object repair code. Fixes a 2856problem that can occur when a lone package object is wrapped with an 2857outer 2858package object in order to force conformance to the ACPI specification. 2859Can 2860affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX, 2861_DLM, 2862_CSD, _PSD, _TSD. 2863 2864Removed code to disable/enable bus master arbitration (ARB_DIS bit in the 2865PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the 2866ARB_DIS bit must be implemented in the host-dependent C3 processor power 2867state 2868support. Note, ARB_DIS is obsolete and only applies to older chipsets, 2869both 2870Intel and other vendors. (for Intel: ICH4-M and earlier) 2871 2872This change removes the code to disable/enable bus master arbitration 2873during 2874suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register 2875causes 2876resume problems on some machines. The change has been in use for over 2877seven 2878years within Linux. 2879 2880Implemented two new external interfaces to support host-directed dynamic 2881ACPI 2882table load and unload. They are intended to simplify the host 2883implementation 2884of hot-plug support: 2885 AcpiLoadTable: Load an SSDT from a buffer into the namespace. 2886 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the 2887table. 2888See the ACPICA reference for additional details. Adds one new file, 2889components/tables/tbxfload.c 2890 2891Implemented and deployed two new interfaces for errors and warnings that 2892are 2893known to be caused by BIOS/firmware issues: 2894 AcpiBiosError: Prints "ACPI Firmware Error" message. 2895 AcpiBiosWarning: Prints "ACPI Firmware Warning" message. 2896Deployed these new interfaces in the ACPICA Table Manager code for ACPI 2897table 2898and FADT errors. Additional deployment to be completed as appropriate in 2899the 2900future. The associated conditional macros are ACPI_BIOS_ERROR and 2901ACPI_BIOS_WARNING. See the ACPICA reference for additional details. 2902ACPICA 2903BZ 2904843. 2905 2906Implicit notify support: ensure that no memory allocation occurs within a 2907critical region. This fix moves a memory allocation outside of the time 2908that a 2909spinlock is held. Fixes issues on systems that do not allow this 2910behavior. 2911Jung-uk Kim. 2912 2913Split exception code utilities and tables into a new file, 2914utilities/utexcep.c 2915 2916Example Code and Data Size: These are the sizes for the OS-independent 2917acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2918debug 2919version of the code includes the debug output trace mechanism and has a 2920much 2921larger code and data size. 2922 2923 Previous Release: 2924 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2925 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2926 Current Release: 2927 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total 2928 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total 2929 2930 29312) iASL Compiler/Disassembler and Tools: 2932 2933iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead 2934of 29350. Jung-uk Kim. 2936 2937Debugger: Enhanced the "tables" command to emit additional information 2938about 2939the current set of ACPI tables, including the owner ID and flags decode. 2940 2941Debugger: Reimplemented the "unload" command to use the new 2942AcpiUnloadParentTable external interface. This command was disable 2943previously 2944due to need for an unload interface. 2945 2946AcpiHelp: Added a new option to decode ACPICA exception codes. The -e 2947option 2948will decode 16-bit hex status codes (ACPI_STATUS) to name strings. 2949 2950---------------------------------------- 295120 June 2012. Summary of changes for version 20120620: 2952 2953 29541) ACPICA Kernel-resident Subsystem: 2955 2956Implemented support to expand the "implicit notify" feature to allow 2957multiple 2958devices to be notified by a single GPE. This feature automatically 2959generates a 2960runtime device notification in the absence of a BIOS-provided GPE control 2961method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit 2962notify is 2963provided by ACPICA for Windows compatibility, and is a workaround for 2964BIOS 2965AML 2966code errors. See the description of the AcpiSetupGpeForWake interface in 2967the 2968APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918. 2969 2970Changed some comments and internal function names to simplify and ensure 2971correctness of the Linux code translation. No functional changes. 2972 2973Example Code and Data Size: These are the sizes for the OS-independent 2974acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 2975debug 2976version of the code includes the debug output trace mechanism and has a 2977much 2978larger code and data size. 2979 2980 Previous Release: 2981 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 2982 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 2983 Current Release: 2984 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total 2985 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total 2986 2987 29882) iASL Compiler/Disassembler and Tools: 2989 2990Disassembler: Added support to emit short, commented descriptions for the 2991ACPI 2992predefined names in order to improve the readability of the disassembled 2993output. ACPICA BZ 959. Changes include: 2994 1) Emit descriptions for all standard predefined names (_INI, _STA, 2995_PRW, 2996etc.) 2997 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.) 2998 3) Emit descriptions for the resource descriptor names (_MIN, _LEN, 2999etc.) 3000 3001AcpiSrc: Fixed several long-standing Linux code translation issues. 3002Argument 3003descriptions in function headers are now translated properly to lower 3004case 3005and 3006underscores. ACPICA BZ 961. Also fixes translation problems such as 3007these: 3008(old -> new) 3009 i_aSL -> iASL 3010 00-7_f -> 00-7F 3011 16_k -> 16K 3012 local_fADT -> local_FADT 3013 execute_oSI -> execute_OSI 3014 3015iASL: Fixed a problem where null bytes were inadvertently emitted into 3016some 3017listing files. 3018 3019iASL: Added the existing debug options to the standard help screen. There 3020are 3021no longer two different help screens. ACPICA BZ 957. 3022 3023AcpiHelp: Fixed some typos in the various predefined name descriptions. 3024Also 3025expand some of the descriptions where appropriate. 3026 3027iASL: Fixed the -ot option (display compile times/statistics). Was not 3028working 3029properly for standard output; only worked for the debug file case. 3030 3031---------------------------------------- 303218 May 2012. Summary of changes for version 20120518: 3033 3034 30351) ACPICA Core Subsystem: 3036 3037Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is 3038defined 3039to block until asynchronous events such as notifies and GPEs have 3040completed. 3041Within ACPICA, it is only called before a notify or GPE handler is 3042removed/uninstalled. It also may be useful for the host OS within related 3043drivers such as the Embedded Controller driver. See the ACPICA reference 3044for 3045additional information. ACPICA BZ 868. 3046 3047ACPI Tables: Added a new error message for a possible overflow failure 3048during 3049the conversion of FADT 32-bit legacy register addresses to internal 3050common 305164- 3052bit GAS structure representation. The GAS has a one-byte "bit length" 3053field, 3054thus limiting the register length to 255 bits. ACPICA BZ 953. 3055 3056Example Code and Data Size: These are the sizes for the OS-independent 3057acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3058debug 3059version of the code includes the debug output trace mechanism and has a 3060much 3061larger code and data size. 3062 3063 Previous Release: 3064 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3065 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3066 Current Release: 3067 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total 3068 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total 3069 3070 30712) iASL Compiler/Disassembler and Tools: 3072 3073iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL 3074macro. 3075This keyword was added late in the ACPI 5.0 release cycle and was not 3076implemented until now. 3077 3078Disassembler: Added support for Operation Region externals. Adds missing 3079support for operation regions that are defined in another table, and 3080referenced locally via a Field or BankField ASL operator. Now generates 3081the 3082correct External statement. 3083 3084Disassembler: Several additional fixes for the External() statement 3085generation 3086related to some ASL operators. Also, order the External() statements 3087alphabetically in the disassembler output. Fixes the External() 3088generation 3089for 3090the Create* field, Alias, and Scope operators: 3091 1) Create* buffer field operators - fix type mismatch warning on 3092disassembly 3093 2) Alias - implement missing External support 3094 3) Scope - fix to make sure all necessary externals are emitted. 3095 3096iASL: Improved pathname support. For include files, merge the prefix 3097pathname 3098with the file pathname and eliminate unnecessary components. Convert 3099backslashes in all pathnames to forward slashes, for readability. Include 3100file 3101pathname changes affect both #include and Include() type operators. 3102 3103iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the 3104end 3105of a valid line by inserting a newline and then returning the EOF during 3106the 3107next call to GetNextLine. Prevents the line from being ignored due to EOF 3108condition. 3109 3110iASL: Implemented some changes to enhance the IDE support (-vi option.) 3111Error 3112and Warning messages are now correctly recognized for both the source 3113code 3114browser and the global error and warning counts. 3115 3116---------------------------------------- 311720 April 2012. Summary of changes for version 20120420: 3118 3119 31201) ACPICA Core Subsystem: 3121 3122Implemented support for multiple notify handlers. This change adds 3123support 3124to 3125allow multiple system and device notify handlers on Device, Thermal Zone, 3126and 3127Processor objects. This can simplify the host OS notification 3128implementation. 3129Also re-worked and restructured the entire notify support code to 3130simplify 3131handler installation, handler removal, notify event queuing, and notify 3132dispatch to handler(s). Note: there can still only be two global notify 3133handlers - one for system notifies and one for device notifies. There are 3134no 3135changes to the existing handler install/remove interfaces. Lin Ming, Bob 3136Moore, Rafael Wysocki. 3137 3138Fixed a regression in the package repair code where the object reference 3139count was calculated incorrectly. Regression was introduced in the commit 3140"Support to add Package wrappers". 3141 3142Fixed a couple possible memory leaks in the AML parser, in the error 3143recovery 3144path. Jesper Juhl, Lin Ming. 3145 3146Example Code and Data Size: These are the sizes for the OS-independent 3147acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3148debug version of the code includes the debug output trace mechanism and 3149has a 3150much larger code and data size. 3151 3152 Previous Release: 3153 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3154 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3155 Current Release: 3156 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3157 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total 3158 3159 31602) iASL Compiler/Disassembler and Tools: 3161 3162iASL: Fixed a problem with the resource descriptor support where the 3163length 3164of the StartDependentFn and StartDependentFnNoPrio descriptors were not 3165included in cumulative descriptor offset, resulting in incorrect values 3166for 3167resource tags within resource descriptors appearing after a 3168StartDependent* 3169descriptor. Reported by Petr Vandrovec. ACPICA BZ 949. 3170 3171iASL and Preprocessor: Implemented full support for the #line directive 3172to 3173correctly track original source file line numbers through the .i 3174preprocessor 3175output file - for error and warning messages. 3176 3177iASL: Expand the allowable byte constants for address space IDs. 3178Previously, 3179the allowable range was 0x80-0xFF (user-defined spaces), now the range is 31800x0A-0xFF to allow for custom and new IDs without changing the compiler. 3181 3182iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948. 3183 3184iASL: Add option to completely disable the preprocessor (-Pn). 3185 3186iASL: Now emit all error/warning messages to standard error (stderr) by 3187default (instead of the previous stdout). 3188 3189ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch(). 3190Update 3191for resource descriptor offset fix above. Update/cleanup error output 3192routines. Enable and send iASL errors/warnings to an error logfile 3193(error.txt). Send all other iASL output to a logfile (compiler.txt). 3194Fixed 3195several extraneous "unrecognized operator" messages. 3196 3197---------------------------------------- 319820 March 2012. Summary of changes for version 20120320: 3199 3200 32011) ACPICA Core Subsystem: 3202 3203Enhanced the sleep/wake interfaces to optionally execute the _GTS method 3204(Going To Sleep) and the _BFS method (Back From Sleep). Windows 3205apparently 3206does not execute these methods, and therefore these methods are often 3207untested. It has been seen on some systems where the execution of these 3208methods causes errors and also prevents the machine from entering S5. It 3209is 3210therefore suggested that host operating systems do not execute these 3211methods 3212by default. In the future, perhaps these methods can be optionally 3213executed 3214based on the age of the system and/or what is the newest version of 3215Windows 3216that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState 3217and 3218AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin 3219Ming. 3220 3221Fixed a problem where the length of the local/common FADT was set too 3222early. 3223The local FADT table length cannot be set to the common length until the 3224original length has been examined. There is code that checks the table 3225length 3226and sets various fields appropriately. This can affect older machines 3227with 3228early FADT versions. For example, this can cause inadvertent writes to 3229the 3230CST_CNT register. Julian Anastasov. 3231 3232Fixed a mapping issue related to a physical table override. Use the 3233deferred 3234mapping mechanism for tables loaded via the physical override OSL 3235interface. 3236This allows for early mapping before the virtual memory manager is 3237available. 3238Thomas Renninger, Bob Moore. 3239 3240Enhanced the automatic return-object repair code: Repair a common problem 3241with 3242predefined methods that are defined to return a variable-length Package 3243of 3244sub-objects. If there is only one sub-object, some BIOS ASL code 3245mistakenly 3246simply returns the single object instead of a Package with one sub- 3247object. 3248This new support will repair this error by wrapping a Package object 3249around 3250the original object, creating the correct and expected Package with one 3251sub- 3252object. Names that can be repaired in this manner include: _ALR, _CSD, 3253_HPX, 3254_MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ 3255939. 3256 3257Changed the exception code returned for invalid ACPI paths passed as 3258parameters to external interfaces such as AcpiEvaluateObject. Was 3259AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME. 3260 3261Example Code and Data Size: These are the sizes for the OS-independent 3262acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3263debug 3264version of the code includes the debug output trace mechanism and has a 3265much 3266larger code and data size. 3267 3268 Previous Release: 3269 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3270 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3271 Current Release: 3272 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total 3273 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3274 3275 32762) iASL Compiler/Disassembler and Tools: 3277 3278iASL: Added the infrastructure and initial implementation of a integrated 3279C- 3280like preprocessor. This will simplify BIOS development process by 3281eliminating 3282the need for a separate preprocessing step during builds. On Windows, it 3283also 3284eliminates the need to install a separate C compiler. ACPICA BZ 761. Some 3285features including full #define() macro support are still under 3286development. 3287These preprocessor directives are supported: 3288 #define 3289 #elif 3290 #else 3291 #endif 3292 #error 3293 #if 3294 #ifdef 3295 #ifndef 3296 #include 3297 #pragma message 3298 #undef 3299 #warning 3300In addition, these new command line options are supported: 3301 -D <symbol> Define symbol for preprocessor use 3302 -li Create preprocessed output file (*.i) 3303 -P Preprocess only and create preprocessor output file (*.i) 3304 3305Table Compiler: Fixed a problem where the equals operator within an 3306expression 3307did not work properly. 3308 3309Updated iASL to use the current versions of Bison/Flex. Updated the 3310Windows 3311project file to invoke these tools from the standard location. ACPICA BZ 3312904. 3313Versions supported: 3314 Flex for Windows: V2.5.4 3315 Bison for Windows: V2.4.1 3316 3317---------------------------------------- 331815 February 2012. Summary of changes for version 20120215: 3319 3320 33211) ACPICA Core Subsystem: 3322 3323There have been some major changes to the sleep/wake support code, as 3324described below (a - e). 3325 3326a) The AcpiLeaveSleepState has been split into two interfaces, similar to 3327AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is 3328AcpiLeaveSleepStatePrep. This allows the host to perform actions between 3329the 3330time the _BFS method is called and the _WAK method is called. NOTE: all 3331hosts 3332must update their wake/resume code or else sleep/wake will not work 3333properly. 3334Rafael Wysocki. 3335 3336b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the 3337_WAK 3338method. Some machines require that the GPEs are enabled before the _WAK 3339method 3340is executed. Thomas Renninger. 3341 3342c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) 3343bit. 3344Some BIOS code assumes that WAK_STS will be cleared on resume and use it 3345to 3346determine whether the system is rebooting or resuming. Matthew Garrett. 3347 3348d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From 3349Sleep) to 3350match the ACPI specification requirement. Rafael Wysocki. 3351 3352e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl 3353registers within the V5 FADT. This support adds two new files: 3354hardware/hwesleep.c implements the support for the new registers. Moved 3355all 3356sleep/wake external interfaces to hardware/hwxfsleep.c. 3357 3358 3359Added a new OSL interface for ACPI table overrides, 3360AcpiOsPhysicalTableOverride. This interface allows the host to override a 3361table via a physical address, instead of the logical address required by 3362AcpiOsTableOverride. This simplifies the host implementation. Initial 3363implementation by Thomas Renninger. The ACPICA implementation creates a 3364single 3365shared function for table overrides that attempts both a logical and a 3366physical override. 3367 3368Expanded the OSL memory read/write interfaces to 64-bit data 3369(AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory 3370transfer support for GAS register structures passed to AcpiRead and 3371AcpiWrite. 3372 3373Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a 3374custom 3375build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC) 3376model. 3377See the ACPICA reference for details. ACPICA BZ 942. This option removes 3378about 337910% of the code and 5% of the static data, and the following hardware 3380ACPI 3381features become unavailable: 3382 PM Event and Control registers 3383 SCI interrupt (and handler) 3384 Fixed Events 3385 General Purpose Events (GPEs) 3386 Global Lock 3387 ACPI PM timer 3388 FACS table (Waking vectors and Global Lock) 3389 3390Updated the unix tarball directory structure to match the ACPICA git 3391source 3392tree. This ensures that the generic unix makefiles work properly (in 3393generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 3394867. 3395 3396Updated the return value of the _REV predefined method to integer value 5 3397to 3398reflect ACPI 5.0 support. 3399 3400Moved the external ACPI PM timer interface prototypes to the public 3401acpixf.h 3402file where they belong. 3403 3404Example Code and Data Size: These are the sizes for the OS-independent 3405acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3406debug 3407version of the code includes the debug output trace mechanism and has a 3408much 3409larger code and data size. 3410 3411 Previous Release: 3412 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3413 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3414 Current Release: 3415 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total 3416 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total 3417 3418 34192) iASL Compiler/Disassembler and Tools: 3420 3421Disassembler: Fixed a problem with the new ACPI 5.0 serial resource 3422descriptors (I2C, SPI, UART) where the resource produce/consumer bit was 3423incorrectly displayed. 3424 3425AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI 3426specification. 3427 3428---------------------------------------- 342911 January 2012. Summary of changes for version 20120111: 3430 3431 34321) ACPICA Core Subsystem: 3433 3434Implemented a new mechanism to allow host device drivers to check for 3435address 3436range conflicts with ACPI Operation Regions. Both SystemMemory and 3437SystemIO 3438address spaces are supported. A new external interface, 3439AcpiCheckAddressRange, 3440allows drivers to check an address range against the ACPI namespace. See 3441the 3442ACPICA reference for additional details. Adds one new file, 3443utilities/utaddress.c. Lin Ming, Bob Moore. 3444 3445Fixed several issues with the ACPI 5.0 FADT support: Add the sleep 3446Control 3447and 3448Status registers, update the ACPI 5.0 flags, and update internal data 3449structures to handle an FADT larger than 256 bytes. The size of the ACPI 34505.0 3451FADT is 268 bytes. 3452 3453Updated all ACPICA copyrights and signons to 2012. Added the 2012 3454copyright to 3455all module headers and signons, including the standard Linux header. This 3456affects virtually every file in the ACPICA core subsystem, iASL compiler, 3457and 3458all ACPICA utilities. 3459 3460Example Code and Data Size: These are the sizes for the OS-independent 3461acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3462debug 3463version of the code includes the debug output trace mechanism and has a 3464much 3465larger code and data size. 3466 3467 Previous Release: 3468 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3469 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3470 Current Release: 3471 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total 3472 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total 3473 3474 34752) iASL Compiler/Disassembler and Tools: 3476 3477Disassembler: fixed a problem with the automatic resource tag generation 3478support. Fixes a problem where the resource tags are inadvertently not 3479constructed if the table being disassembled contains external references 3480to 3481control methods. Moved the actual construction of the tags to after the 3482final 3483namespace is constructed (after 2nd parse is invoked due to external 3484control 3485method references.) ACPICA BZ 941. 3486 3487Table Compiler: Make all "generic" operators caseless. These are the 3488operators 3489like UINT8, String, etc. Making these caseless improves ease-of-use. 3490ACPICA BZ 3491934. 3492 3493---------------------------------------- 349423 November 2011. Summary of changes for version 20111123: 3495 34960) ACPI 5.0 Support: 3497 3498This release contains full support for the ACPI 5.0 specification, as 3499summarized below. 3500 3501Reduced Hardware Support: 3502------------------------- 3503 3504This support allows for ACPI systems without the usual ACPI hardware. 3505This 3506support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA 3507will 3508not attempt to initialize or use any of the usual ACPI hardware. Note, 3509when 3510this flag is set, all of the following ACPI hardware is assumed to be not 3511present and is not initialized or accessed: 3512 3513 General Purpose Events (GPEs) 3514 Fixed Events (PM1a/PM1b and PM Control) 3515 Power Management Timer and Console Buttons (power/sleep) 3516 Real-time Clock Alarm 3517 Global Lock 3518 System Control Interrupt (SCI) 3519 The FACS is assumed to be non-existent 3520 3521ACPI Tables: 3522------------ 3523 3524All new tables and updates to existing tables are fully supported in the 3525ACPICA headers (for use by device drivers), the disassembler, and the 3526iASL 3527Data Table Compiler. ACPI 5.0 defines these new tables: 3528 3529 BGRT /* Boot Graphics Resource Table */ 3530 DRTM /* Dynamic Root of Trust for Measurement table */ 3531 FPDT /* Firmware Performance Data Table */ 3532 GTDT /* Generic Timer Description Table */ 3533 MPST /* Memory Power State Table */ 3534 PCCT /* Platform Communications Channel Table */ 3535 PMTT /* Platform Memory Topology Table */ 3536 RASF /* RAS Feature table */ 3537 3538Operation Regions/SpaceIDs: 3539--------------------------- 3540 3541All new operation regions are fully supported by the iASL compiler, the 3542disassembler, and the ACPICA runtime code (for dispatch to region 3543handlers.) 3544The new operation region Space IDs are: 3545 3546 GeneralPurposeIo 3547 GenericSerialBus 3548 3549Resource Descriptors: 3550--------------------- 3551 3552All new ASL resource descriptors are fully supported by the iASL 3553compiler, 3554the 3555ASL/AML disassembler, and the ACPICA runtime Resource Manager code 3556(including 3557all new predefined resource tags). New descriptors are: 3558 3559 FixedDma 3560 GpioIo 3561 GpioInt 3562 I2cSerialBus 3563 SpiSerialBus 3564 UartSerialBus 3565 3566ASL/AML Operators, New and Modified: 3567------------------------------------ 3568 3569One new operator is added, the Connection operator, which is used to 3570associate 3571a GeneralPurposeIo or GenericSerialBus resource descriptor with 3572individual 3573field objects within an operation region. Several new protocols are 3574associated 3575with the AccessAs operator. All are fully supported by the iASL compiler, 3576disassembler, and runtime ACPICA AML interpreter: 3577 3578 Connection // Declare Field Connection 3579attributes 3580 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol 3581 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes 3582Protocol 3583 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol 3584 RawDataBuffer // Data type for Vendor Data 3585fields 3586 3587Predefined ASL/AML Objects: 3588--------------------------- 3589 3590All new predefined objects/control-methods are supported by the iASL 3591compiler 3592and the ACPICA runtime validation/repair (arguments and return values.) 3593New 3594predefined names include the following: 3595 3596Standard Predefined Names (Objects or Control Methods): 3597 _AEI, _CLS, _CPC, _CWS, _DEP, 3598 _DLM, _EVT, _GCP, _CRT, _GWS, 3599 _HRV, _PRE, _PSE, _SRT, _SUB. 3600 3601Resource Tags (Names used to access individual fields within resource 3602descriptors): 3603 _DBT, _DPL, _DRS, _END, _FLC, 3604 _IOR, _LIN, _MOD, _PAR, _PHA, 3605 _PIN, _PPI, _POL, _RXL, _SLV, 3606 _SPE, _STB, _TXL, _VEN. 3607 3608ACPICA External Interfaces: 3609--------------------------- 3610 3611Several new interfaces have been defined for use by ACPI-related device 3612drivers and other host OS services: 3613 3614AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS 3615to 3616acquire and release AML mutexes that are defined in the DSDT/SSDT tables 3617provided by the BIOS. They are intended to be used in conjunction with 3618the 3619ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level 3620mutual exclusion with the AML code/interpreter. 3621 3622AcpiGetEventResources: Returns the (formatted) resource descriptors as 3623defined 3624by the ACPI 5.0 _AEI object (ACPI Event Information). This object 3625provides 3626resource descriptors associated with hardware-reduced platform events, 3627similar 3628to the AcpiGetCurrentResources interface. 3629 3630Operation Region Handlers: For General Purpose IO and Generic Serial Bus 3631operation regions, information about the Connection() object and any 3632optional 3633length information is passed to the region handler within the Context 3634parameter. 3635 3636AcpiBufferToResource: This interface converts a raw AML buffer containing 3637a 3638resource template or resource descriptor to the ACPI_RESOURCE internal 3639format 3640suitable for use by device drivers. Can be used by an operation region 3641handler 3642to convert the Connection() buffer object into a ACPI_RESOURCE. 3643 3644Miscellaneous/Tools/TestSuites: 3645------------------------------- 3646 3647Support for extended _HID names (Four alpha characters instead of three). 3648Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities. 3649Support for ACPI 5.0 features in the ASLTS test suite. 3650Fully updated documentation (ACPICA and iASL reference documents.) 3651 3652ACPI Table Definition Language: 3653------------------------------- 3654 3655Support for this language was implemented and released as a subsystem of 3656the 3657iASL compiler in 2010. (See the iASL compiler User Guide.) 3658 3659 3660Non-ACPI 5.0 changes for this release: 3661-------------------------------------- 3662 36631) ACPICA Core Subsystem: 3664 3665Fix a problem with operation region declarations where a failure can 3666occur 3667if 3668the region name and an argument that evaluates to an object (such as the 3669region address) are in different namespace scopes. Lin Ming, ACPICA BZ 3670937. 3671 3672Do not abort an ACPI table load if an invalid space ID is found within. 3673This 3674will be caught later if the offending method is executed. ACPICA BZ 925. 3675 3676Fixed an issue with the FFixedHW space ID where the ID was not always 3677recognized properly (Both ACPICA and iASL). ACPICA BZ 926. 3678 3679Fixed a problem with the 32-bit generation of the unix-specific OSL 3680(osunixxf.c). Lin Ming, ACPICA BZ 936. 3681 3682Several changes made to enable generation with the GCC 4.6 compiler. 3683ACPICA BZ 3684935. 3685 3686New error messages: Unsupported I/O requests (not 8/16/32 bit), and 3687Index/Bank 3688field registers out-of-range. 3689 36902) iASL Compiler/Disassembler and Tools: 3691 3692iASL: Implemented the __PATH__ operator, which returns the full pathname 3693of 3694the current source file. 3695 3696AcpiHelp: Automatically display expanded keyword information for all ASL 3697operators. 3698 3699Debugger: Add "Template" command to disassemble/dump resource template 3700buffers. 3701 3702Added a new master script to generate and execute the ASLTS test suite. 3703Automatically handles 32- and 64-bit generation. See tests/aslts.sh 3704 3705iASL: Fix problem with listing generation during processing of the 3706Switch() 3707operator where AML listing was disabled until the entire Switch block was 3708completed. 3709 3710iASL: Improve support for semicolon statement terminators. Fix "invalid 3711character" message for some cases when the semicolon is used. Semicolons 3712are 3713now allowed after every <Term> grammar element. ACPICA BZ 927. 3714 3715iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ 3716923. 3717 3718Disassembler: Fix problem with disassembly of the DataTableRegion 3719operator 3720where an inadvertent "Unhandled deferred opcode" message could be 3721generated. 3722 37233) Example Code and Data Size 3724 3725These are the sizes for the OS-independent acpica.lib produced by the 3726Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3727includes the debug output trace mechanism and has a much larger code and 3728data 3729size. 3730 3731 Previous Release: 3732 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3733 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3734 Current Release: 3735 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total 3736 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total 3737 3738---------------------------------------- 373922 September 2011. Summary of changes for version 20110922: 3740 37410) ACPI 5.0 News: 3742 3743Support for ACPI 5.0 in ACPICA has been underway for several months and 3744will 3745be released at the same time that ACPI 5.0 is officially released. 3746 3747The ACPI 5.0 specification is on track for release in the next few 3748months. 3749 37501) ACPICA Core Subsystem: 3751 3752Fixed a problem where the maximum sleep time for the Sleep() operator was 3753intended to be limited to two seconds, but was inadvertently limited to 375420 3755seconds instead. 3756 3757Linux and Unix makefiles: Added header file dependencies to ensure 3758correct 3759generation of ACPICA core code and utilities. Also simplified the 3760makefiles 3761considerably through the use of the vpath variable to specify search 3762paths. 3763ACPICA BZ 924. 3764 37652) iASL Compiler/Disassembler and Tools: 3766 3767iASL: Implemented support to check the access length for all fields 3768created to 3769access named Resource Descriptor fields. For example, if a resource field 3770is 3771defined to be two bits, a warning is issued if a CreateXxxxField() is 3772used 3773with an incorrect bit length. This is implemented for all current 3774resource 3775descriptor names. ACPICA BZ 930. 3776 3777Disassembler: Fixed a byte ordering problem with the output of 24-bit and 377856- 3779bit integers. 3780 3781iASL: Fixed a couple of issues associated with variable-length package 3782objects. 1) properly handle constants like One, Ones, Zero -- do not make 3783a 3784VAR_PACKAGE when these are used as a package length. 2) Allow the 3785VAR_PACKAGE 3786opcode (in addition to PACKAGE) when validating object types for 3787predefined 3788names. 3789 3790iASL: Emit statistics for all output files (instead of just the ASL input 3791and 3792AML output). Includes listings, hex files, etc. 3793 3794iASL: Added -G option to the table compiler to allow the compilation of 3795custom 3796ACPI tables. The only part of a table that is required is the standard 379736- 3798byte 3799ACPI header. 3800 3801AcpiXtract: Ported to the standard ACPICA environment (with ACPICA 3802headers), 3803which also adds correct 64-bit support. Also, now all output filenames 3804are 3805completely lower case. 3806 3807AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when 3808loading table files. A warning is issued for any such tables. The only 3809exception is an FADT. This also fixes a possible fault when attempting to 3810load 3811non-AML tables. ACPICA BZ 932. 3812 3813AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where 3814a 3815missing table terminator could cause a fault when using the -p option. 3816 3817AcpiSrc: Fixed a possible divide-by-zero fault when generating file 3818statistics. 3819 38203) Example Code and Data Size 3821 3822These are the sizes for the OS-independent acpica.lib produced by the 3823Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code 3824includes the debug output trace mechanism and has a much larger code and 3825data 3826size. 3827 3828 Previous Release (VC 9.0): 3829 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3830 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3831 Current Release (VC 9.0): 3832 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3833 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3834 3835 3836---------------------------------------- 383723 June 2011. Summary of changes for version 20110623: 3838 38391) ACPI CA Core Subsystem: 3840 3841Updated the predefined name repair mechanism to not attempt repair of a 3842_TSS 3843return object if a _PSS object is present. We can only sort the _TSS 3844return 3845package if there is no _PSS within the same scope. This is because if 3846_PSS 3847is 3848present, the ACPI specification dictates that the _TSS Power Dissipation 3849field 3850is to be ignored, and therefore some BIOSs leave garbage values in the 3851_TSS 3852Power field(s). In this case, it is best to just return the _TSS package 3853as- 3854is. Reported by, and fixed with assistance from Fenghua Yu. 3855 3856Added an option to globally disable the control method return value 3857validation 3858and repair. This runtime option can be used to disable return value 3859repair 3860if 3861this is causing a problem on a particular machine. Also added an option 3862to 3863AcpiExec (-dr) to set this disable flag. 3864 3865All makefiles and project files: Major changes to improve generation of 3866ACPICA 3867tools. ACPICA BZ 912: 3868 Reduce default optimization levels to improve compatibility 3869 For Linux, add strict-aliasing=0 for gcc 4 3870 Cleanup and simplify use of command line defines 3871 Cleanup multithread library support 3872 Improve usage messages 3873 3874Linux-specific header: update handling of THREAD_ID and pthread. For the 387532- 3876bit case, improve casting to eliminate possible warnings, especially with 3877the 3878acpica tools. 3879 3880Example Code and Data Size: These are the sizes for the OS-independent 3881acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3882debug 3883version of the code includes the debug output trace mechanism and has a 3884much 3885larger code and data size. 3886 3887 Previous Release (VC 9.0): 3888 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3889 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3890 Current Release (VC 9.0): 3891 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total 3892 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3893 38942) iASL Compiler/Disassembler and Tools: 3895 3896With this release, a new utility named "acpihelp" has been added to the 3897ACPICA 3898package. This utility summarizes the ACPI specification chapters for the 3899ASL 3900and AML languages. It generates under Linux/Unix as well as Windows, and 3901provides the following functionality: 3902 Find/display ASL operator(s) -- with description and syntax. 3903 Find/display ASL keyword(s) -- with exact spelling and descriptions. 3904 Find/display ACPI predefined name(s) -- with description, number 3905 of arguments, and the return value data type. 3906 Find/display AML opcode name(s) -- with opcode, arguments, and 3907grammar. 3908 Decode/display AML opcode -- with opcode name, arguments, and 3909grammar. 3910 3911Service Layers: Make multi-thread support configurable. Conditionally 3912compile 3913the multi-thread support so that threading libraries will not be linked 3914if 3915not 3916necessary. The only tool that requires multi-thread support is AcpiExec. 3917 3918iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions 3919of 3920Bison appear to want the interface to yyerror to be a const char * (or at 3921least this is a problem when generating iASL on some systems.) ACPICA BZ 3922923 3923Pierre Lejeune. 3924 3925Tools: Fix for systems where O_BINARY is not defined. Only used for 3926Windows 3927versions of the tools. 3928 3929---------------------------------------- 393027 May 2011. Summary of changes for version 20110527: 3931 39321) ACPI CA Core Subsystem: 3933 3934ASL Load() operator: Reinstate most restrictions on the incoming ACPI 3935table 3936signature. Now, only allow SSDT, OEMx, and a null signature. History: 3937 1) Originally, we checked the table signature for "SSDT" or "PSDT". 3938 (PSDT is now obsolete.) 3939 2) We added support for OEMx tables, signature "OEM" plus a fourth 3940 "don't care" character. 3941 3) Valid tables were encountered with a null signature, so we just 3942 gave up on validating the signature, (05/2008). 3943 4) We encountered non-AML tables such as the MADT, which caused 3944 interpreter errors and kernel faults. So now, we once again allow 3945 only SSDT, OEMx, and now, also a null signature. (05/2011). 3946 3947Added the missing _TDL predefined name to the global name list in order 3948to 3949enable validation. Affects both the core ACPICA code and the iASL 3950compiler. 3951 3952Example Code and Data Size: These are the sizes for the OS-independent 3953acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 3954debug 3955version of the code includes the debug output trace mechanism and has a 3956much 3957larger code and data size. 3958 3959 Previous Release (VC 9.0): 3960 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 3961 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 3962 Current Release (VC 9.0): 3963 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 3964 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 3965 39662) iASL Compiler/Disassembler and Tools: 3967 3968Debugger/AcpiExec: Implemented support for "complex" method arguments on 3969the 3970debugger command line. This adds support beyond simple integers -- 3971including 3972Strings, Buffers, and Packages. Includes support for nested packages. 3973Increased the default command line buffer size to accommodate these 3974arguments. 3975See the ACPICA reference for details and syntax. ACPICA BZ 917. 3976 3977Debugger/AcpiExec: Implemented support for "default" method arguments for 3978the 3979Execute/Debug command. Now, the debugger will always invoke a control 3980method 3981with the required number of arguments -- even if the command line 3982specifies 3983none or insufficient arguments. It uses default integer values for any 3984missing 3985arguments. Also fixes a bug where only six method arguments maximum were 3986supported instead of the required seven. 3987 3988Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine 3989and 3990also return status in order to prevent buffer overruns. See the ACPICA 3991reference for details and syntax. ACPICA BZ 921 3992 3993iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 3994makefiles to simplify support for the two different but similar parser 3995generators, bison and yacc. 3996 3997Updated the generic unix makefile for gcc 4. The default gcc version is 3998now 3999expected to be 4 or greater, since options specific to gcc 4 are used. 4000 4001---------------------------------------- 400213 April 2011. Summary of changes for version 20110413: 4003 40041) ACPI CA Core Subsystem: 4005 4006Implemented support to execute a so-called "orphan" _REG method under the 4007EC 4008device. This change will force the execution of a _REG method underneath 4009the 4010EC 4011device even if there is no corresponding operation region of type 4012EmbeddedControl. Fixes a problem seen on some machines and apparently is 4013compatible with Windows behavior. ACPICA BZ 875. 4014 4015Added more predefined methods that are eligible for automatic NULL 4016package 4017element removal. This change adds another group of predefined names to 4018the 4019list 4020of names that can be repaired by having NULL package elements dynamically 4021removed. This group are those methods that return a single variable- 4022length 4023package containing simple data types such as integers, buffers, strings. 4024This 4025includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, 4026_PSL, 4027_Sx, 4028and _TZD. ACPICA BZ 914. 4029 4030Split and segregated all internal global lock functions to a new file, 4031evglock.c. 4032 4033Updated internal address SpaceID for DataTable regions. Moved this 4034internal 4035space 4036id in preparation for ACPI 5.0 changes that will include some new space 4037IDs. 4038This 4039change should not affect user/host code. 4040 4041Example Code and Data Size: These are the sizes for the OS-independent 4042acpica.lib 4043produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4044version of 4045the code includes the debug output trace mechanism and has a much larger 4046code 4047and 4048data size. 4049 4050 Previous Release (VC 9.0): 4051 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4052 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4053 Current Release (VC 9.0): 4054 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 4055 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 4056 40572) iASL Compiler/Disassembler and Tools: 4058 4059iASL/DTC: Major update for new grammar features. Allow generic data types 4060in 4061custom ACPI tables. Field names are now optional. Any line can be split 4062to 4063multiple lines using the continuation char (\). Large buffers now use 4064line- 4065continuation character(s) and no colon on the continuation lines. See the 4066grammar 4067update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob 4068Moore. 4069 4070iASL: Mark ASL "Return()" and the simple "Return" as "Null" return 4071statements. 4072Since the parser stuffs a "zero" as the return value for these statements 4073(due 4074to 4075the underlying AML grammar), they were seen as "return with value" by the 4076iASL 4077semantic checking. They are now seen correctly as "null" return 4078statements. 4079 4080iASL: Check if a_REG declaration has a corresponding Operation Region. 4081Adds a 4082check for each _REG to ensure that there is in fact a corresponding 4083operation 4084region declaration in the same scope. If not, the _REG method is not very 4085useful 4086since it probably won't be executed. ACPICA BZ 915. 4087 4088iASL/DTC: Finish support for expression evaluation. Added a new 4089expression 4090parser 4091that implements c-style operator precedence and parenthesization. ACPICA 4092bugzilla 4093908. 4094 4095Disassembler/DTC: Remove support for () and <> style comments in data 4096tables. 4097Now 4098that DTC has full expression support, we don't want to have comment 4099strings 4100that 4101start with a parentheses or a less-than symbol. Now, only the standard /* 4102and 4103// 4104comments are supported, as well as the bracket [] comments. 4105 4106AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 4107"unusual" 4108headers in the acpidump file. Update the header validation to support 4109these 4110tables. Problem introduced in previous AcpiXtract version in the change 4111to 4112support "wrong checksum" error messages emitted by acpidump utility. 4113 4114iASL: Add a * option to generate all template files (as a synonym for 4115ALL) 4116as 4117in 4118"iasl -T *" or "iasl -T ALL". 4119 4120iASL/DTC: Do not abort compiler on fatal errors. We do not want to 4121completely 4122abort the compiler on "fatal" errors, simply should abort the current 4123compile. 4124This allows multiple compiles with a single (possibly wildcard) compiler 4125invocation. 4126 4127---------------------------------------- 412816 March 2011. Summary of changes for version 20110316: 4129 41301) ACPI CA Core Subsystem: 4131 4132Fixed a problem caused by a _PRW method appearing at the namespace root 4133scope 4134during the setup of wake GPEs. A fault could occur if a _PRW directly 4135under 4136the 4137root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 4138 4139Implemented support for "spurious" Global Lock interrupts. On some 4140systems, a 4141global lock interrupt can occur without the pending flag being set. Upon 4142a 4143GL 4144interrupt, we now ensure that a thread is actually waiting for the lock 4145before 4146signaling GL availability. Rafael Wysocki, Bob Moore. 4147 4148Example Code and Data Size: These are the sizes for the OS-independent 4149acpica.lib 4150produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 4151version of 4152the code includes the debug output trace mechanism and has a much larger 4153code 4154and 4155data size. 4156 4157 Previous Release (VC 9.0): 4158 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4159 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4160 Current Release (VC 9.0): 4161 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 4162 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 4163 41642) iASL Compiler/Disassembler and Tools: 4165 4166Implemented full support for the "SLIC" ACPI table. Includes support in 4167the 4168header files, disassembler, table compiler, and template generator. Bob 4169Moore, 4170Lin Ming. 4171 4172AcpiXtract: Correctly handle embedded comments and messages from 4173AcpiDump. 4174Apparently some or all versions of acpidump will occasionally emit a 4175comment 4176like 4177"Wrong checksum", etc., into the dump file. This was causing problems for 4178AcpiXtract. ACPICA BZ 905. 4179 4180iASL: Fix the Linux makefile by removing an inadvertent double file 4181inclusion. 4182ACPICA BZ 913. 4183 4184AcpiExec: Update installation of operation region handlers. Install one 4185handler 4186for a user-defined address space. This is used by the ASL test suite 4187(ASLTS). 4188 4189---------------------------------------- 419011 February 2011. Summary of changes for version 20110211: 4191 41921) ACPI CA Core Subsystem: 4193 4194Added a mechanism to defer _REG methods for some early-installed 4195handlers. 4196Most user handlers should be installed before call to 4197AcpiEnableSubsystem. 4198However, Event handlers and region handlers should be installed after 4199AcpiInitializeObjects. Override handlers for the "default" regions should 4200be 4201installed early, however. This change executes all _REG methods for the 4202default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 4203chicken/egg issues between them. ACPICA BZ 848. 4204 4205Implemented an optimization for GPE detection. This optimization will 4206simply 4207ignore GPE registers that contain no enabled GPEs -- there is no need to 4208read the register since this information is available internally. This 4209becomes more important on machines with a large GPE space. ACPICA 4210bugzilla 4211884. Lin Ming. Suggestion from Joe Liu. 4212 4213Removed all use of the highly unreliable FADT revision field. The 4214revision 4215number in the FADT has been found to be completely unreliable and cannot 4216be 4217trusted. Only the actual table length can be used to infer the version. 4218This 4219change updates the ACPICA core and the disassembler so that both no 4220longer 4221even look at the FADT version and instead depend solely upon the FADT 4222length. 4223 4224Fix an unresolved name issue for the no-debug and no-error-message source 4225generation cases. The _AcpiModuleName was left undefined in these cases, 4226but 4227it is actually needed as a parameter to some interfaces. Define 4228_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 4229 4230Split several large files (makefiles and project files updated) 4231 utglobal.c -> utdecode.c 4232 dbcomds.c -> dbmethod.c dbnames.c 4233 dsopcode.c -> dsargs.c dscontrol.c 4234 dsload.c -> dsload2.c 4235 aslanalyze.c -> aslbtypes.c aslwalks.c 4236 4237Example Code and Data Size: These are the sizes for the OS-independent 4238acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4239debug version of the code includes the debug output trace mechanism and 4240has 4241a much larger code and data size. 4242 4243 Previous Release (VC 9.0): 4244 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4245 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4246 Current Release (VC 9.0): 4247 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4248 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4249 42502) iASL Compiler/Disassembler and Tools: 4251 4252iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 4253These are useful C-style macros with the standard definitions. ACPICA 4254bugzilla 898. 4255 4256iASL/DTC: Added support for integer expressions and labels. Support for 4257full 4258expressions for all integer fields in all ACPI tables. Support for labels 4259in 4260"generic" portions of tables such as UEFI. See the iASL reference manual. 4261 4262Debugger: Added a command to display the status of global handlers. The 4263"handlers" command will display op region, fixed event, and miscellaneous 4264global handlers. installation status -- and for op regions, whether 4265default 4266or user-installed handler will be used. 4267 4268iASL: Warn if reserved method incorrectly returns a value. Many 4269predefined 4270names are defined such that they do not return a value. If implemented as 4271a 4272method, issue a warning if such a name explicitly returns a value. ACPICA 4273Bugzilla 855. 4274 4275iASL: Added detection of GPE method name conflicts. Detects a conflict 4276where 4277there are two GPE methods of the form _Lxy and _Exy in the same scope. 4278(For 4279example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 4280 4281iASL/DTC: Fixed a couple input scanner issues with comments and line 4282numbers. Comment remover could get confused and miss a comment ending. 4283Fixed 4284a problem with line counter maintenance. 4285 4286iASL/DTC: Reduced the severity of some errors from fatal to error. There 4287is 4288no need to abort on simple errors within a field definition. 4289 4290Debugger: Simplified the output of the help command. All help output now 4291in 4292a single screen, instead of help subcommands. ACPICA Bugzilla 897. 4293 4294---------------------------------------- 429512 January 2011. Summary of changes for version 20110112: 4296 42971) ACPI CA Core Subsystem: 4298 4299Fixed a race condition between method execution and namespace walks that 4300can 4301possibly cause a fault. The problem was apparently introduced in version 430220100528 as a result of a performance optimization that reduces the 4303number 4304of 4305namespace walks upon method exit by using the delete_namespace_subtree 4306function instead of the delete_namespace_by_owner function used 4307previously. 4308Bug is a missing namespace lock in the delete_namespace_subtree function. 4309dana.myers@oracle.com 4310 4311Fixed several issues and a possible fault with the automatic "serialized" 4312method support. History: This support changes a method to "serialized" on 4313the 4314fly if the method generates an AE_ALREADY_EXISTS error, indicating the 4315possibility that it cannot handle reentrancy. This fix repairs a couple 4316of 4317issues seen in the field, especially on machines with many cores: 4318 4319 1) Delete method children only upon the exit of the last thread, 4320 so as to not delete objects out from under other running threads 4321 (and possibly causing a fault.) 4322 2) Set the "serialized" bit for the method only upon the exit of the 4323 Last thread, so as to not cause deadlock when running threads 4324 attempt to exit. 4325 3) Cleanup the use of the AML "MethodFlags" and internal method flags 4326 so that there is no longer any confusion between the two. 4327 4328 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 4329 4330Debugger: Now lock the namespace for duration of a namespace dump. 4331Prevents 4332issues if the namespace is changing dynamically underneath the debugger. 4333Especially affects temporary namespace nodes, since the debugger displays 4334these also. 4335 4336Updated the ordering of include files. The ACPICA headers should appear 4337before any compiler-specific headers (stdio.h, etc.) so that acenv.h can 4338set 4339any necessary compiler-specific defines, etc. Affects the ACPI-related 4340tools 4341and utilities. 4342 4343Updated all ACPICA copyrights and signons to 2011. Added the 2011 4344copyright 4345to all module headers and signons, including the Linux header. This 4346affects 4347virtually every file in the ACPICA core subsystem, iASL compiler, and all 4348utilities. 4349 4350Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 4351project files for VC++ 6.0 are now obsolete. New project files can be 4352found 4353under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 4354details. 4355 4356Example Code and Data Size: These are the sizes for the OS-independent 4357acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 4358debug version of the code includes the debug output trace mechanism and 4359has a 4360much larger code and data size. 4361 4362 Previous Release (VC 6.0): 4363 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4364 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4365 Current Release (VC 9.0): 4366 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 4367 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 4368 43692) iASL Compiler/Disassembler and Tools: 4370 4371iASL: Added generic data types to the Data Table compiler. Add "generic" 4372data 4373types such as UINT32, String, Unicode, etc., to simplify the generation 4374of 4375platform-defined tables such as UEFI. Lin Ming. 4376 4377iASL: Added listing support for the Data Table Compiler. Adds listing 4378support 4379(-l) to display actual binary output for each line of input code. 4380 4381---------------------------------------- 438209 December 2010. Summary of changes for version 20101209: 4383 43841) ACPI CA Core Subsystem: 4385 4386Completed the major overhaul of the GPE support code that was begun in 4387July 43882010. Major features include: removal of _PRW execution in ACPICA (host 4389executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 4390changes to existing interfaces, simplification of GPE handler operation, 4391and 4392a handful of new interfaces: 4393 4394 AcpiUpdateAllGpes 4395 AcpiFinishGpe 4396 AcpiSetupGpeForWake 4397 AcpiSetGpeWakeMask 4398 One new file, evxfgpe.c to consolidate all external GPE interfaces. 4399 4400See the ACPICA Programmer Reference for full details and programming 4401information. See the new section 4.4 "General Purpose Event (GPE) 4402Support" 4403for a full overview, and section 8.7 "ACPI General Purpose Event 4404Management" 4405for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin 4406Ming, 4407Bob Moore, Rafael Wysocki. 4408 4409Implemented a new GPE feature for Windows compatibility, the "Implicit 4410Wake 4411GPE Notify". This feature will automatically issue a Notify(2) on a 4412device 4413when a Wake GPE is received if there is no corresponding GPE method or 4414handler. ACPICA BZ 870. 4415 4416Fixed a problem with the Scope() operator during table parse and load 4417phase. 4418During load phase (table load or method execution), the scope operator 4419should 4420not enter the target into the namespace. Instead, it should open a new 4421scope 4422at the target location. Linux BZ 19462, ACPICA BZ 882. 4423 4424Example Code and Data Size: These are the sizes for the OS-independent 4425acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4426debug version of the code includes the debug output trace mechanism and 4427has a 4428much larger code and data size. 4429 4430 Previous Release: 4431 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 4432 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 4433 Current Release: 4434 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4435 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4436 44372) iASL Compiler/Disassembler and Tools: 4438 4439iASL: Relax the alphanumeric restriction on _CID strings. These strings 4440are 4441"bus-specific" per the ACPI specification, and therefore any characters 4442are 4443acceptable. The only checks that can be performed are for a null string 4444and 4445perhaps for a leading asterisk. ACPICA BZ 886. 4446 4447iASL: Fixed a problem where a syntax error that caused a premature EOF 4448condition on the source file emitted a very confusing error message. The 4449premature EOF is now detected correctly. ACPICA BZ 891. 4450 4451Disassembler: Decode the AccessSize within a Generic Address Structure 4452(byte 4453access, word access, etc.) Note, this field does not allow arbitrary bit 4454access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 4455 4456New: AcpiNames utility - Example namespace dump utility. Shows an example 4457of 4458ACPICA configuration for a minimal namespace dump utility. Uses table and 4459namespace managers, but no AML interpreter. Does not add any 4460functionality 4461over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 4462partition and configure ACPICA. ACPICA BZ 883. 4463 4464AML Debugger: Increased the debugger buffer size for method return 4465objects. 4466Was 4K, increased to 16K. Also enhanced error messages for debugger 4467method 4468execution, including the buffer overflow case. 4469 4470---------------------------------------- 447113 October 2010. Summary of changes for version 20101013: 4472 44731) ACPI CA Core Subsystem: 4474 4475Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, 4476now 4477clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 4478HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 4479 4480Changed the type of the predefined namespace object _TZ from ThermalZone 4481to 4482Device. This was found to be confusing to the host software that 4483processes 4484the various thermal zones, since _TZ is not really a ThermalZone. 4485However, 4486a 4487Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 4488Zhang. 4489 4490Added Windows Vista SP2 to the list of supported _OSI strings. The actual 4491string is "Windows 2006 SP2". 4492 4493Eliminated duplicate code in AcpiUtExecute* functions. Now that the 4494nsrepair 4495code automatically repairs _HID-related strings, this type of code is no 4496longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 4497878. 4498 4499Example Code and Data Size: These are the sizes for the OS-independent 4500acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4501debug version of the code includes the debug output trace mechanism and 4502has a 4503much larger code and data size. 4504 4505 Previous Release: 4506 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4507 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4508 Current Release: 4509 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4510 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4511 45122) iASL Compiler/Disassembler and Tools: 4513 4514iASL: Implemented additional compile-time validation for _HID strings. 4515The 4516non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the 4517length 4518of 4519the string must be exactly seven or eight characters. For both _HID and 4520_CID 4521strings, all characters must be alphanumeric. ACPICA BZ 874. 4522 4523iASL: Allow certain "null" resource descriptors. Some BIOS code creates 4524descriptors that are mostly or all zeros, with the expectation that they 4525will 4526be filled in at runtime. iASL now allows this as long as there is a 4527"resource 4528tag" (name) associated with the descriptor, which gives the ASL a handle 4529needed to modify the descriptor. ACPICA BZ 873. 4530 4531Added single-thread support to the generic Unix application OSL. 4532Primarily 4533for iASL support, this change removes the use of semaphores in the 4534single- 4535threaded ACPICA tools/applications - increasing performance. The 4536_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 4537option. ACPICA BZ 879. 4538 4539AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 4540support 4541for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 4542 4543iASL: Moved all compiler messages to a new file, aslmessages.h. 4544 4545---------------------------------------- 454615 September 2010. Summary of changes for version 20100915: 4547 45481) ACPI CA Core Subsystem: 4549 4550Removed the AcpiOsDerivePciId OSL interface. The various host 4551implementations 4552of this function were not OS-dependent and are now obsolete and can be 4553removed from all host OSLs. This function has been replaced by 4554AcpiHwDerivePciId, which is now part of the ACPICA core code. 4555AcpiHwDerivePciId has been implemented without recursion. Adds one new 4556module, hwpci.c. ACPICA BZ 857. 4557 4558Implemented a dynamic repair for _HID and _CID strings. The following 4559problems are now repaired at runtime: 1) Remove a leading asterisk in the 4560string, and 2) the entire string is uppercased. Both repairs are in 4561accordance with the ACPI specification and will simplify host driver 4562code. 4563ACPICA BZ 871. 4564 4565The ACPI_THREAD_ID type is no longer configurable, internally it is now 4566always UINT64. This simplifies the ACPICA code, especially any printf 4567output. 4568UINT64 is the only common data type for all thread_id types across all 4569operating systems. It is now up to the host OSL to cast the native 4570thread_id 4571type to UINT64 before returning the value to ACPICA (via 4572AcpiOsGetThreadId). 4573Lin Ming, Bob Moore. 4574 4575Added the ACPI_INLINE type to enhance the ACPICA configuration. The 4576"inline" 4577keyword is not standard across compilers, and this type allows inline to 4578be 4579configured on a per-compiler basis. Lin Ming. 4580 4581Made the system global AcpiGbl_SystemAwakeAndRunning publically 4582available. 4583Added an extern for this boolean in acpixf.h. Some hosts utilize this 4584value 4585during suspend/restore operations. ACPICA BZ 869. 4586 4587All code that implements error/warning messages with the "ACPI:" prefix 4588has 4589been moved to a new module, utxferror.c. 4590 4591The UINT64_OVERLAY was moved to utmath.c, which is the only module where 4592it 4593is used. ACPICA BZ 829. Lin Ming, Bob Moore. 4594 4595Example Code and Data Size: These are the sizes for the OS-independent 4596acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4597debug version of the code includes the debug output trace mechanism and 4598has a 4599much larger code and data size. 4600 4601 Previous Release: 4602 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4603 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4604 Current Release: 4605 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 4606 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 4607 46082) iASL Compiler/Disassembler and Tools: 4609 4610iASL/Disassembler: Write ACPI errors to stderr instead of the output 4611file. 4612This keeps the output files free of random error messages that may 4613originate 4614from within the namespace/interpreter code. Used this opportunity to 4615merge 4616all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 4617866. Lin Ming, Bob Moore. 4618 4619Tools: update some printfs for ansi warnings on size_t. Handle width 4620change 4621of size_t on 32-bit versus 64-bit generations. Lin Ming. 4622 4623---------------------------------------- 462406 August 2010. Summary of changes for version 20100806: 4625 46261) ACPI CA Core Subsystem: 4627 4628Designed and implemented a new host interface to the _OSI support code. 4629This 4630will allow the host to dynamically add or remove multiple _OSI strings, 4631as 4632well as install an optional handler that is called for each _OSI 4633invocation. 4634Also added a new AML debugger command, 'osi' to display and modify the 4635global 4636_OSI string table, and test support in the AcpiExec utility. See the 4637ACPICA 4638reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 4639New Functions: 4640 AcpiInstallInterface - Add an _OSI string. 4641 AcpiRemoveInterface - Delete an _OSI string. 4642 AcpiInstallInterfaceHandler - Install optional _OSI handler. 4643Obsolete Functions: 4644 AcpiOsValidateInterface - no longer used. 4645New Files: 4646 source/components/utilities/utosi.c 4647 4648Re-introduced the support to enable multi-byte transfers for Embedded 4649Controller (EC) operation regions. A reported problem was found to be a 4650bug 4651in the host OS, not in the multi-byte support. Previously, the maximum 4652data 4653size passed to the EC operation region handler was a single byte. There 4654are 4655often EC Fields larger than one byte that need to be transferred, and it 4656is 4657useful for the EC driver to lock these as a single transaction. This 4658change 4659enables single transfers larger than 8 bits. This effectively changes the 4660access to the EC space from ByteAcc to AnyAcc, and will probably require 4661changes to the host OS Embedded Controller driver to enable 16/32/64/256- 4662bit 4663transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 4664 4665Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 4666prototype in acpiosxf.h had the output value pointer as a (void *). 4667It should be a (UINT64 *). This may affect some host OSL code. 4668 4669Fixed a couple problems with the recently modified Linux makefiles for 4670iASL 4671and AcpiExec. These new makefiles place the generated object files in the 4672local directory so that there can be no collisions between the files that 4673are 4674shared between them that are compiled with different options. 4675 4676Example Code and Data Size: These are the sizes for the OS-independent 4677acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4678debug version of the code includes the debug output trace mechanism and 4679has a 4680much larger code and data size. 4681 4682 Previous Release: 4683 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4684 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4685 Current Release: 4686 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 4687 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 4688 46892) iASL Compiler/Disassembler and Tools: 4690 4691iASL/Disassembler: Added a new option (-da, "disassemble all") to load 4692the 4693namespace from and disassemble an entire group of AML files. Useful for 4694loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) 4695and 4696disassembling with one simple command. ACPICA BZ 865. Lin Ming. 4697 4698iASL: Allow multiple invocations of -e option. This change allows 4699multiple 4700uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 4701834. 4702Lin Ming. 4703 4704---------------------------------------- 470502 July 2010. Summary of changes for version 20100702: 4706 47071) ACPI CA Core Subsystem: 4708 4709Implemented several updates to the recently added GPE reference count 4710support. The model for "wake" GPEs is changing to give the host OS 4711complete 4712control of these GPEs. Eventually, the ACPICA core will not execute any 4713_PRW 4714methods, since the host already must execute them. Also, additional 4715changes 4716were made to help ensure that the reference counts are kept in proper 4717synchronization with reality. Rafael J. Wysocki. 4718 47191) Ensure that GPEs are not enabled twice during initialization. 47202) Ensure that GPE enable masks stay in sync with the reference count. 47213) Do not inadvertently enable GPEs when writing GPE registers. 47224) Remove the internal wake reference counter and add new AcpiGpeWakeup 4723interface. This interface will set or clear individual GPEs for wakeup. 47245) Remove GpeType argument from AcpiEnable and AcpiDisable. These 4725interfaces 4726are now used for "runtime" GPEs only. 4727 4728Changed the behavior of the GPE install/remove handler interfaces. The 4729GPE 4730is 4731no longer disabled during this process, as it was found to cause problems 4732on 4733some machines. Rafael J. Wysocki. 4734 4735Reverted a change introduced in version 20100528 to enable Embedded 4736Controller multi-byte transfers. This change was found to cause problems 4737with 4738Index Fields and possibly Bank Fields. It will be reintroduced when these 4739problems have been resolved. 4740 4741Fixed a problem with references to Alias objects within Package Objects. 4742A 4743reference to an Alias within the definition of a Package was not always 4744resolved properly. Aliases to objects like Processors, Thermal zones, 4745etc. 4746were resolved to the actual object instead of a reference to the object 4747as 4748it 4749should be. Package objects are only allowed to contain integer, string, 4750buffer, package, and reference objects. Redhat bugzilla 608648. 4751 4752Example Code and Data Size: These are the sizes for the OS-independent 4753acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4754debug version of the code includes the debug output trace mechanism and 4755has a 4756much larger code and data size. 4757 4758 Previous Release: 4759 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4760 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4761 Current Release: 4762 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4763 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 4764 47652) iASL Compiler/Disassembler and Tools: 4766 4767iASL: Implemented a new compiler subsystem to allow definition and 4768compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. 4769These 4770are called "ACPI Data Tables", and the new compiler is the "Data Table 4771Compiler". This compiler is intended to simplify the existing error-prone 4772process of creating these tables for the BIOS, as well as allowing the 4773disassembly, modification, recompilation, and override of existing ACPI 4774data 4775tables. See the iASL User Guide for detailed information. 4776 4777iASL: Implemented a new Template Generator option in support of the new 4778Data 4779Table Compiler. This option will create examples of all known ACPI tables 4780that can be used as the basis for table development. See the iASL 4781documentation and the -T option. 4782 4783Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 4784Descriptor Table). 4785 4786Updated the Linux makefiles for iASL and AcpiExec to place the generated 4787object files in the local directory so that there can be no collisions 4788between the shared files between them that are generated with different 4789options. 4790 4791Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. 4792Use 4793the #define __APPLE__ to enable this support. 4794 4795---------------------------------------- 479628 May 2010. Summary of changes for version 20100528: 4797 4798Note: The ACPI 4.0a specification was released on April 5, 2010 and is 4799available at www.acpi.info. This is primarily an errata release. 4800 48011) ACPI CA Core Subsystem: 4802 4803Undefined ACPI tables: We are looking for the definitions for the 4804following 4805ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 4806 4807Implemented support to enable multi-byte transfers for Embedded 4808Controller 4809(EC) operation regions. Previously, the maximum data size passed to the 4810EC 4811operation region handler was a single byte. There are often EC Fields 4812larger 4813than one byte that need to be transferred, and it is useful for the EC 4814driver 4815to lock these as a single transaction. This change enables single 4816transfers 4817larger than 8 bits. This effectively changes the access to the EC space 4818from 4819ByteAcc to AnyAcc, and will probably require changes to the host OS 4820Embedded 4821Controller driver to enable 16/32/64/256-bit transfers in addition to 8- 4822bit 4823transfers. Alexey Starikovskiy, Lin Ming 4824 4825Implemented a performance enhancement for namespace search and access. 4826This 4827change enhances the performance of namespace searches and walks by adding 4828a 4829backpointer to the parent in each namespace node. On large namespaces, 4830this 4831change can improve overall ACPI performance by up to 9X. Adding a pointer 4832to 4833each namespace node increases the overall size of the internal namespace 4834by 4835about 5%, since each namespace entry usually consists of both a namespace 4836node and an ACPI operand object. However, this is the first growth of the 4837namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 4838 4839Implemented a performance optimization that reduces the number of 4840namespace 4841walks. On control method exit, only walk the namespace if the method is 4842known 4843to have created namespace objects outside of its local scope. Previously, 4844the 4845entire namespace was traversed on each control method exit. This change 4846can 4847improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 4848Moore. 4849 4850Added support to truncate I/O addresses to 16 bits for Windows 4851compatibility. 4852Some ASL code has been seen in the field that inadvertently has bits set 4853above bit 15. This feature is optional and is enabled if the BIOS 4854requests 4855any Windows OSI strings. It can also be enabled by the host OS. Matthew 4856Garrett, Bob Moore. 4857 4858Added support to limit the maximum time for the ASL Sleep() operator. To 4859prevent accidental deep sleeps, limit the maximum time that Sleep() will 4860actually sleep. Configurable, the default maximum is two seconds. ACPICA 4861bugzilla 854. 4862 4863Added run-time validation support for the _WDG and_WED Microsoft 4864predefined 4865methods. These objects are defined by "Windows Instrumentation", and are 4866not 4867part of the ACPI spec. ACPICA BZ 860. 4868 4869Expanded all statistic counters used during namespace and device 4870initialization from 16 to 32 bits in order to support very large 4871namespaces. 4872 4873Replaced all instances of %d in printf format specifiers with %u since 4874nearly 4875all integers in ACPICA are unsigned. 4876 4877Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 4878returned 4879as AE_NO_HANDLER. 4880 4881Example Code and Data Size: These are the sizes for the OS-independent 4882acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4883debug version of the code includes the debug output trace mechanism and 4884has a 4885much larger code and data size. 4886 4887 Previous Release: 4888 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4889 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4890 Current Release: 4891 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 4892 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 4893 48942) iASL Compiler/Disassembler and Tools: 4895 4896iASL: Added compiler support for the _WDG and_WED Microsoft predefined 4897methods. These objects are defined by "Windows Instrumentation", and are 4898not 4899part of the ACPI spec. ACPICA BZ 860. 4900 4901AcpiExec: added option to disable the memory tracking mechanism. The -dt 4902option will disable the tracking mechanism, which improves performance 4903considerably. 4904 4905AcpiExec: Restructured the command line options into -d (disable) and -e 4906(enable) options. 4907 4908---------------------------------------- 490928 April 2010. Summary of changes for version 20100428: 4910 49111) ACPI CA Core Subsystem: 4912 4913Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 4914including FADT-based and GPE Block Devices, execute any _PRW methods in 4915the 4916new table, and process any _Lxx/_Exx GPE methods in the new table. Any 4917runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 4918immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 4919Devices. Provides compatibility with other ACPI implementations. Two new 4920files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 4921Moore. 4922 4923Fixed a regression introduced in version 20100331 within the table 4924manager 4925where initial table loading could fail. This was introduced in the fix 4926for 4927AcpiReallocateRootTable. Also, renamed some of fields in the table 4928manager 4929data structures to clarify their meaning and use. 4930 4931Fixed a possible allocation overrun during internal object copy in 4932AcpiUtCopySimpleObject. The original code did not correctly handle the 4933case 4934where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 4935847. 4936 4937Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 4938possible access beyond end-of-allocation. Also, now fully validate 4939descriptor 4940(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 4941 4942Example Code and Data Size: These are the sizes for the OS-independent 4943acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 4944debug version of the code includes the debug output trace mechanism and 4945has a 4946much larger code and data size. 4947 4948 Previous Release: 4949 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 4950 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 4951 Current Release: 4952 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 4953 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 4954 49552) iASL Compiler/Disassembler and Tools: 4956 4957iASL: Implemented Min/Max/Len/Gran validation for address resource 4958descriptors. This change implements validation for the address fields 4959that 4960are common to all address-type resource descriptors. These checks are 4961implemented: Checks for valid Min/Max, length within the Min/Max window, 4962valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as 4963per 4964table 6-40 in the ACPI 4.0a specification. Also split the large 4965aslrestype1.c 4966and aslrestype2.c files into five new files. ACPICA BZ 840. 4967 4968iASL: Added support for the _Wxx predefined names. This support was 4969missing 4970and these names were not recognized by the compiler as valid predefined 4971names. ACPICA BZ 851. 4972 4973iASL: Added an error for all predefined names that are defined to return 4974no 4975value and thus must be implemented as Control Methods. These include all 4976of 4977the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 4978names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 4979 4980iASL: Implemented the -ts option to emit hex AML data in ASL format, as 4981an 4982ASL Buffer. Allows ACPI tables to be easily included within ASL files, to 4983be 4984dynamically loaded via the Load() operator. Also cleaned up output for 4985the 4986- 4987ta and -tc options. ACPICA BZ 853. 4988 4989Tests: Added a new file with examples of extended iASL error checking. 4990Demonstrates the advanced error checking ability of the iASL compiler. 4991Available at tests/misc/badcode.asl. 4992 4993---------------------------------------- 499431 March 2010. Summary of changes for version 20100331: 4995 49961) ACPI CA Core Subsystem: 4997 4998Completed a major update for the GPE support in order to improve support 4999for 5000shared GPEs and to simplify both host OS and ACPICA code. Added a 5001reference 5002count mechanism to support shared GPEs that require multiple device 5003drivers. 5004Several external interfaces have changed. One external interface has been 5005removed. One new external interface was added. Most of the GPE external 5006interfaces now use the GPE spinlock instead of the events mutex (and the 5007Flags parameter for many GPE interfaces has been removed.) See the 5008updated 5009ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, 5010Rafael 5011Wysocki. ACPICA BZ 831. 5012 5013Changed: 5014 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 5015Removed: 5016 AcpiSetGpeType 5017New: 5018 AcpiSetGpe 5019 5020Implemented write support for DataTable operation regions. These regions 5021are 5022defined via the DataTableRegion() operator. Previously, only read support 5023was 5024implemented. The ACPI specification allows DataTableRegions to be 5025read/write, 5026however. 5027 5028Implemented a new subsystem option to force a copy of the DSDT to local 5029memory. Optionally copy the entire DSDT to local memory (instead of 5030simply 5031mapping it.) There are some (albeit very rare) BIOSs that corrupt or 5032replace 5033the original DSDT, creating the need for this option. Default is FALSE, 5034do 5035not copy the DSDT. 5036 5037Implemented detection of a corrupted or replaced DSDT. This change adds 5038support to detect a DSDT that has been corrupted and/or replaced from 5039outside 5040the OS (by firmware). This is typically catastrophic for the system, but 5041has 5042been seen on some machines. Once this problem has been detected, the DSDT 5043copy option can be enabled via system configuration. Lin Ming, Bob Moore. 5044 5045Fixed two problems with AcpiReallocateRootTable during the root table 5046copy. 5047When copying the root table to the new allocation, the length used was 5048incorrect. The new size was used instead of the current table size, 5049meaning 5050too much data was copied. Also, the count of available slots for ACPI 5051tables 5052was not set correctly. Alexey Starikovskiy, Bob Moore. 5053 5054Example Code and Data Size: These are the sizes for the OS-independent 5055acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5056debug version of the code includes the debug output trace mechanism and 5057has a 5058much larger code and data size. 5059 5060 Previous Release: 5061 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5062 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5063 Current Release: 5064 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 5065 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 5066 50672) iASL Compiler/Disassembler and Tools: 5068 5069iASL: Implement limited typechecking for values returned from predefined 5070control methods. The type of any returned static (unnamed) object is now 5071validated. For example, Return(1). ACPICA BZ 786. 5072 5073iASL: Fixed a predefined name object verification regression. Fixes a 5074problem 5075introduced in version 20100304. An error is incorrectly generated if a 5076predefined name is declared as a static named object with a value defined 5077using the keywords "Zero", "One", or "Ones". Lin Ming. 5078 5079iASL: Added Windows 7 support for the -g option (get local ACPI tables) 5080by 5081reducing the requested registry access rights. ACPICA BZ 842. 5082 5083Disassembler: fixed a possible fault when generating External() 5084statements. 5085Introduced in commit ae7d6fd: Properly handle externals with parent- 5086prefix 5087(carat). Fixes a string length allocation calculation. Lin Ming. 5088 5089---------------------------------------- 509004 March 2010. Summary of changes for version 20100304: 5091 50921) ACPI CA Core Subsystem: 5093 5094Fixed a possible problem with the AML Mutex handling function 5095AcpiExReleaseMutex where the function could fault under the very rare 5096condition when the interpreter has blocked, the interpreter lock is 5097released, 5098the interpreter is then reentered via the same thread, and attempts to 5099acquire an AML mutex that was previously acquired. FreeBSD report 140979. 5100Lin 5101Ming. 5102 5103Implemented additional configuration support for the AML "Debug Object". 5104Output from the debug object can now be enabled via a global variable, 5105AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 5106debugging. 5107This debug output is now available in the release version of ACPICA 5108instead 5109of just the debug version. Also, the entire debug output module can now 5110be 5111configured out of the ACPICA build if desired. One new file added, 5112executer/exdebug.c. Lin Ming, Bob Moore. 5113 5114Added header support for the ACPI MCHI table (Management Controller Host 5115Interface Table). This table was added in ACPI 4.0, but the defining 5116document 5117has only recently become available. 5118 5119Standardized output of integer values for ACPICA warnings/errors. Always 5120use 51210x prefix for hex output, always use %u for unsigned integer decimal 5122output. 5123Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 5124400 5125invocations.) These invocations were converted from the original 5126ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 5127 5128Example Code and Data Size: These are the sizes for the OS-independent 5129acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5130debug version of the code includes the debug output trace mechanism and 5131has a 5132much larger code and data size. 5133 5134 Previous Release: 5135 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5136 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5137 Current Release: 5138 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 5139 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 5140 51412) iASL Compiler/Disassembler and Tools: 5142 5143iASL: Implemented typechecking support for static (non-control method) 5144predefined named objects that are declared with the Name() operator. For 5145example, the type of this object is now validated to be of type Integer: 5146Name(_BBN, 1). This change migrates the compiler to using the core 5147predefined 5148name table instead of maintaining a local version. Added a new file, 5149aslpredef.c. ACPICA BZ 832. 5150 5151Disassembler: Added support for the ACPI 4.0 MCHI table. 5152 5153---------------------------------------- 515421 January 2010. Summary of changes for version 20100121: 5155 51561) ACPI CA Core Subsystem: 5157 5158Added the 2010 copyright to all module headers and signons. This affects 5159virtually every file in the ACPICA core subsystem, the iASL compiler, the 5160tools/utilities, and the test suites. 5161 5162Implemented a change to the AcpiGetDevices interface to eliminate 5163unnecessary 5164invocations of the _STA method. In the case where a specific _HID is 5165requested, do not run _STA until a _HID match is found. This eliminates 5166potentially dozens of _STA calls during a search for a particular 5167device/HID, 5168which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 5169 5170Implemented an additional repair for predefined method return values. 5171Attempt 5172to repair unexpected NULL elements within returned Package objects. 5173Create 5174an 5175Integer of value zero, a NULL String, or a zero-length Buffer as 5176appropriate. 5177ACPICA BZ 818. Lin Ming, Bob Moore. 5178 5179Removed the obsolete ACPI_INTEGER data type. This type was introduced as 5180the 5181code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 5182(with 518364-bit AML integers). It is now obsolete and this change removes it from 5184the 5185ACPICA code base, replaced by UINT64. The original typedef has been 5186retained 5187for now for compatibility with existing device driver code. ACPICA BZ 5188824. 5189 5190Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field 5191in 5192the parse tree object. 5193 5194Added additional warning options for the gcc-4 generation. Updated the 5195source 5196accordingly. This includes some code restructuring to eliminate 5197unreachable 5198code, elimination of some gotos, elimination of unused return values, 5199some 5200additional casting, and removal of redundant declarations. 5201 5202Example Code and Data Size: These are the sizes for the OS-independent 5203acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5204debug version of the code includes the debug output trace mechanism and 5205has a 5206much larger code and data size. 5207 5208 Previous Release: 5209 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5210 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5211 Current Release: 5212 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 5213 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 5214 52152) iASL Compiler/Disassembler and Tools: 5216 5217No functional changes for this release. 5218 5219---------------------------------------- 522014 December 2009. Summary of changes for version 20091214: 5221 52221) ACPI CA Core Subsystem: 5223 5224Enhanced automatic data type conversions for predefined name repairs. 5225This 5226change expands the automatic repairs/conversions for predefined name 5227return 5228values to make Integers, Strings, and Buffers fully interchangeable. 5229Also, 5230a 5231Buffer can be converted to a Package of Integers if necessary. The 5232nsrepair.c 5233module was completely restructured. Lin Ming, Bob Moore. 5234 5235Implemented automatic removal of null package elements during predefined 5236name 5237repairs. This change will automatically remove embedded and trailing NULL 5238package elements from returned package objects that are defined to 5239contain 5240a 5241variable number of sub-packages. The driver is then presented with a 5242package 5243with no null elements to deal with. ACPICA BZ 819. 5244 5245Implemented a repair for the predefined _FDE and _GTM names. The expected 5246return value for both names is a Buffer of 5 DWORDs. This repair fixes 5247two 5248possible problems (both seen in the field), where a package of integers 5249is 5250returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 5251Kim. 5252 5253Implemented additional module-level code support. This change will 5254properly 5255execute module-level code that is not at the root of the namespace (under 5256a 5257Device object, etc.). Now executes the code within the current scope 5258instead 5259of the root. ACPICA BZ 762. Lin Ming. 5260 5261Fixed possible mutex acquisition errors when running _REG methods. Fixes 5262a 5263problem where mutex errors can occur when running a _REG method that is 5264in 5265the same scope as a method-defined operation region or an operation 5266region 5267under a module-level IF block. This type of code is rare, so the problem 5268has 5269not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 5270 5271Fixed a possible memory leak during module-level code execution. An 5272object 5273could be leaked for each block of executed module-level code if the 5274interpreter slack mode is enabled This change deletes any implicitly 5275returned 5276object from the module-level code block. Lin Ming. 5277 5278Removed messages for successful predefined repair(s). The repair 5279mechanism 5280was considered too wordy. Now, messages are only unconditionally emitted 5281if 5282the return object cannot be repaired. Existing messages for successful 5283repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 5284827. 5285 5286Example Code and Data Size: These are the sizes for the OS-independent 5287acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5288debug version of the code includes the debug output trace mechanism and 5289has a 5290much larger code and data size. 5291 5292 Previous Release: 5293 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5294 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5295 Current Release: 5296 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 5297 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 5298 52992) iASL Compiler/Disassembler and Tools: 5300 5301iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 5302files 5303were no longer automatically removed at the termination of the compile. 5304 5305acpiexec: Implemented the -f option to specify default region fill value. 5306This option specifies the value used to initialize buffers that simulate 5307operation regions. Default value is zero. Useful for debugging problems 5308that 5309depend on a specific initial value for a region or field. 5310 5311---------------------------------------- 531212 November 2009. Summary of changes for version 20091112: 5313 53141) ACPI CA Core Subsystem: 5315 5316Implemented a post-order callback to AcpiWalkNamespace. The existing 5317interface only has a pre-order callback. This change adds an additional 5318parameter for a post-order callback which will be more useful for bus 5319scans. 5320ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 5321 5322Modified the behavior of the operation region memory mapping cache for 5323SystemMemory. Ensure that the memory mappings created for operation 5324regions 5325do not cross 4K page boundaries. Crossing a page boundary while mapping 5326regions can cause kernel warnings on some hosts if the pages have 5327different 5328attributes. Such regions are probably BIOS bugs, and this is the 5329workaround. 5330Linux BZ 14445. Lin Ming. 5331 5332Implemented an automatic repair for predefined methods that must return 5333sorted lists. This change will repair (by sorting) packages returned by 5334_ALR, 5335_PSS, and _TSS. Drivers can now assume that the packages are correctly 5336sorted 5337and do not contain NULL package elements. Adds one new file, 5338namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 5339 5340Fixed a possible fault during predefined name validation if a return 5341Package 5342object contains NULL elements. Also adds a warning if a NULL element is 5343followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 5344may 5345include repair or removal of all such NULL elements where possible. 5346 5347Implemented additional module-level executable AML code support. This 5348change 5349will execute module-level code that is not at the root of the namespace 5350(under a Device object, etc.) at table load time. Module-level executable 5351AML 5352code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 5353 5354Implemented a new internal function to create Integer objects. This 5355function 5356simplifies miscellaneous object creation code. ACPICA BZ 823. 5357 5358Reduced the severity of predefined repair messages, Warning to Info. 5359Since 5360the object was successfully repaired, a warning is too severe. Reduced to 5361an 5362info message for now. These messages may eventually be changed to debug- 5363only. 5364ACPICA BZ 812. 5365 5366Example Code and Data Size: These are the sizes for the OS-independent 5367acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5368debug version of the code includes the debug output trace mechanism and 5369has a 5370much larger code and data size. 5371 5372 Previous Release: 5373 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5374 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5375 Current Release: 5376 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 5377 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 5378 53792) iASL Compiler/Disassembler and Tools: 5380 5381iASL: Implemented Switch() with While(1) so that Break works correctly. 5382This 5383change correctly implements the Switch operator with a surrounding 5384While(1) 5385so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 5386 5387iASL: Added a message if a package initializer list is shorter than 5388package 5389length. Adds a new remark for a Package() declaration if an initializer 5390list 5391exists, but is shorter than the declared length of the package. Although 5392technically legal, this is probably a coding error and it is seen in the 5393field. ACPICA BZ 815. Lin Ming, Bob Moore. 5394 5395iASL: Fixed a problem where the compiler could fault after the maximum 5396number 5397of errors was reached (200). 5398 5399acpixtract: Fixed a possible warning for pointer cast if the compiler 5400warning 5401level set very high. 5402 5403---------------------------------------- 540413 October 2009. Summary of changes for version 20091013: 5405 54061) ACPI CA Core Subsystem: 5407 5408Fixed a problem where an Operation Region _REG method could be executed 5409more 5410than once. If a custom address space handler is installed by the host 5411before 5412the "initialize operation regions" phase of the ACPICA initialization, 5413any 5414_REG methods for that address space could be executed twice. This change 5415fixes the problem. ACPICA BZ 427. Lin Ming. 5416 5417Fixed a possible memory leak for the Scope() ASL operator. When the exact 5418invocation of "Scope(\)" is executed (change scope to root), one internal 5419operand object was leaked. Lin Ming. 5420 5421Implemented a run-time repair for the _MAT predefined method. If the _MAT 5422return value is defined as a Field object in the AML, and the field 5423size is less than or equal to the default width of an integer (32 or 542464),_MAT 5425can incorrectly return an Integer instead of a Buffer. ACPICA now 5426automatically repairs this problem. ACPICA BZ 810. 5427 5428Implemented a run-time repair for the _BIF and _BIX predefined methods. 5429The 5430"OEM Information" field is often incorrectly returned as an Integer with 5431value zero if the field is not supported by the platform. This is due to 5432an 5433ambiguity in the ACPI specification. The field should always be a string. 5434ACPICA now automatically repairs this problem by returning a NULL string 5435within the returned Package. ACPICA BZ 807. 5436 5437Example Code and Data Size: These are the sizes for the OS-independent 5438acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5439debug version of the code includes the debug output trace mechanism and 5440has a 5441much larger code and data size. 5442 5443 Previous Release: 5444 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5445 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5446 Current Release: 5447 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 5448 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 5449 54502) iASL Compiler/Disassembler and Tools: 5451 5452Disassembler: Fixed a problem where references to external symbols that 5453contained one or more parent-prefixes (carats) were not handled 5454correctly, 5455possibly causing a fault. ACPICA BZ 806. Lin Ming. 5456 5457Disassembler: Restructured the code so that all functions that handle 5458external symbols are in a single module. One new file is added, 5459common/dmextern.c. 5460 5461AML Debugger: Added a max count argument for the Batch command (which 5462executes multiple predefined methods within the namespace.) 5463 5464iASL: Updated the compiler documentation (User Reference.) Available at 5465http://www.acpica.org/documentation/. ACPICA BZ 750. 5466 5467AcpiXtract: Updated for Lint and other formatting changes. Close all open 5468files. 5469 5470---------------------------------------- 547103 September 2009. Summary of changes for version 20090903: 5472 54731) ACPI CA Core Subsystem: 5474 5475For Windows Vista compatibility, added the automatic execution of an _INI 5476method located at the namespace root (\_INI). This method is executed at 5477table load time. This support is in addition to the automatic execution 5478of 5479\_SB._INI. Lin Ming. 5480 5481Fixed a possible memory leak in the interpreter for AML package objects 5482if 5483the package initializer list is longer than the defined size of the 5484package. 5485This apparently can only happen if the BIOS changes the package size on 5486the 5487fly (seen in a _PSS object), as ASL compilers do not allow this. The 5488interpreter will truncate the package to the defined size (and issue an 5489error 5490message), but previously could leave the extra objects undeleted if they 5491were 5492pre-created during the argument processing (such is the case if the 5493package 5494consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 5495 5496Fixed a problem seen when a Buffer or String is stored to itself via ASL. 5497This has been reported in the field. Previously, ACPICA would zero out 5498the 5499buffer/string. Now, the operation is treated as a noop. Provides Windows 5500compatibility. ACPICA BZ 803. Lin Ming. 5501 5502Removed an extraneous error message for ASL constructs of the form 5503Store(LocalX,LocalX) when LocalX is uninitialized. These curious 5504statements 5505are seen in many BIOSs and are once again treated as NOOPs and no error 5506is 5507emitted when they are encountered. ACPICA BZ 785. 5508 5509Fixed an extraneous warning message if a _DSM reserved method returns a 5510Package object. _DSM can return any type of object, so validation on the 5511return type cannot be performed. ACPICA BZ 802. 5512 5513Example Code and Data Size: These are the sizes for the OS-independent 5514acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5515debug version of the code includes the debug output trace mechanism and 5516has a 5517much larger code and data size. 5518 5519 Previous Release: 5520 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5521 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5522 Current Release: 5523 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 5524 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 5525 55262) iASL Compiler/Disassembler and Tools: 5527 5528iASL: Fixed a problem with the use of the Alias operator and Resource 5529Templates. The correct alias is now constructed and no error is emitted. 5530ACPICA BZ 738. 5531 5532iASL: Implemented the -I option to specify additional search directories 5533for 5534include files. Allows multiple additional search paths for include files. 5535Directories are searched in the order specified on the command line 5536(after 5537the local directory is searched.) ACPICA BZ 800. 5538 5539iASL: Fixed a problem where the full pathname for include files was not 5540emitted for warnings/errors. This caused the IDE support to not work 5541properly. ACPICA BZ 765. 5542 5543iASL: Implemented the -@ option to specify a Windows-style response file 5544containing additional command line options. ACPICA BZ 801. 5545 5546AcpiExec: Added support to load multiple AML files simultaneously (such 5547as 5548a 5549DSDT and multiple SSDTs). Also added support for wildcards within the AML 5550pathname. These features allow all machine tables to be easily loaded and 5551debugged together. ACPICA BZ 804. 5552 5553Disassembler: Added missing support for disassembly of HEST table Error 5554Bank 5555subtables. 5556 5557---------------------------------------- 555830 July 2009. Summary of changes for version 20090730: 5559 5560The ACPI 4.0 implementation for ACPICA is complete with this release. 5561 55621) ACPI CA Core Subsystem: 5563 5564ACPI 4.0: Added header file support for all new and changed ACPI tables. 5565Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are 5566new 5567for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, 5568BERT, 5569EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. 5570There 5571have been some ACPI 4.0 changes to other existing tables. Split the large 5572actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 5573 5574ACPI 4.0: Implemented predefined name validation for all new names. There 5575are 557631 new names in ACPI 4.0. The predefined validation module was split into 5577two 5578files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 5579 5580Implemented support for so-called "module-level executable code". This is 5581executable AML code that exists outside of any control method and is 5582intended 5583to be executed at table load time. Although illegal since ACPI 2.0, this 5584type 5585of code still exists and is apparently still being created. Blocks of 5586this 5587code are now detected and executed as intended. Currently, the code 5588blocks 5589must exist under either an If, Else, or While construct; these are the 5590typical cases seen in the field. ACPICA BZ 762. Lin Ming. 5591 5592Implemented an automatic dynamic repair for predefined names that return 5593nested Package objects. This applies to predefined names that are defined 5594to 5595return a variable-length Package of sub-packages. If the number of sub- 5596packages is one, BIOS code is occasionally seen that creates a simple 5597single 5598package with no sub-packages. This code attempts to fix the problem by 5599wrapping a new package object around the existing package. These methods 5600can 5601be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA 5602BZ 5603790. 5604 5605Fixed a regression introduced in 20090625 for the AcpiGetDevices 5606interface. 5607The _HID/_CID matching was broken and no longer matched IDs correctly. 5608ACPICA 5609BZ 793. 5610 5611Fixed a problem with AcpiReset where the reset would silently fail if the 5612register was one of the protected I/O ports. AcpiReset now bypasses the 5613port 5614validation mechanism. This may eventually be driven into the 5615AcpiRead/Write 5616interfaces. 5617 5618Fixed a regression related to the recent update of the AcpiRead/Write 5619interfaces. A sleep/suspend could fail if the optional PM2 Control 5620register 5621does not exist during an attempt to write the Bus Master Arbitration bit. 5622(However, some hosts already delete the code that writes this bit, and 5623the 5624code may in fact be obsolete at this date.) ACPICA BZ 799. 5625 5626Fixed a problem where AcpiTerminate could fault if inadvertently called 5627twice 5628in succession. ACPICA BZ 795. 5629 5630Example Code and Data Size: These are the sizes for the OS-independent 5631acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5632debug version of the code includes the debug output trace mechanism and 5633has a 5634much larger code and data size. 5635 5636 Previous Release: 5637 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5638 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5639 Current Release: 5640 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 5641 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 5642 56432) iASL Compiler/Disassembler and Tools: 5644 5645ACPI 4.0: Implemented disassembler support for all new ACPI tables and 5646changes to existing tables. ACPICA BZ 775. 5647 5648---------------------------------------- 564925 June 2009. Summary of changes for version 20090625: 5650 5651The ACPI 4.0 Specification was released on June 16 and is available at 5652www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 5653continue for the next few releases. 5654 56551) ACPI CA Core Subsystem: 5656 5657ACPI 4.0: Implemented interpreter support for the IPMI operation region 5658address space. Includes support for bi-directional data buffers and an 5659IPMI 5660address space handler (to be installed by an IPMI device driver.) ACPICA 5661BZ 5662773. Lin Ming. 5663 5664ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. 5665Includes 5666support in both the header files and the disassembler. 5667 5668Completed a major update for the AcpiGetObjectInfo external interface. 5669Changes include: 5670 - Support for variable, unlimited length HID, UID, and CID strings. 5671 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, 5672etc.) 5673 - Call the _SxW power methods on behalf of a device object. 5674 - Determine if a device is a PCI root bridge. 5675 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 5676These changes will require an update to all callers of this interface. 5677See 5678the updated ACPICA Programmer Reference for details. One new source file 5679has 5680been added - utilities/utids.c. ACPICA BZ 368, 780. 5681 5682Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 5683transfers. The Value parameter has been extended from 32 bits to 64 bits 5684in 5685order to support new ACPI 4.0 tables. These changes will require an 5686update 5687to 5688all callers of these interfaces. See the ACPICA Programmer Reference for 5689details. ACPICA BZ 768. 5690 5691Fixed several problems with AcpiAttachData. The handler was not invoked 5692when 5693the host node was deleted. The data sub-object was not automatically 5694deleted 5695when the host node was deleted. The interface to the handler had an 5696unused 5697parameter, this was removed. ACPICA BZ 778. 5698 5699Enhanced the function that dumps ACPI table headers. All non-printable 5700characters in the string fields are now replaced with '?' (Signature, 5701OemId, 5702OemTableId, and CompilerId.) ACPI tables with non-printable characters in 5703these fields are occasionally seen in the field. ACPICA BZ 788. 5704 5705Fixed a problem with predefined method repair code where the code that 5706attempts to repair/convert an object of incorrect type is only executed 5707on 5708the first time the predefined method is called. The mechanism that 5709disables 5710warnings on subsequent calls was interfering with the repair mechanism. 5711ACPICA BZ 781. 5712 5713Fixed a possible memory leak in the predefined validation/repair code 5714when 5715a 5716buffer is automatically converted to an expected string object. 5717 5718Removed obsolete 16-bit files from the distribution and from the current 5719git 5720tree head. ACPICA BZ 776. 5721 5722Example Code and Data Size: These are the sizes for the OS-independent 5723acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5724debug version of the code includes the debug output trace mechanism and 5725has a 5726much larger code and data size. 5727 5728 Previous Release: 5729 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5730 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5731 Current Release: 5732 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 5733 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 5734 57352) iASL Compiler/Disassembler and Tools: 5736 5737ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 5738operation region keyword. ACPICA BZ 771, 772. Lin Ming. 5739 5740ACPI 4.0: iASL - implemented compile-time validation support for all new 5741predefined names and control methods (31 total). ACPICA BZ 769. 5742 5743---------------------------------------- 574421 May 2009. Summary of changes for version 20090521: 5745 57461) ACPI CA Core Subsystem: 5747 5748Disabled the preservation of the SCI enable bit in the PM1 control 5749register. 5750The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification 5751to 5752be 5753a "preserved" bit - "OSPM always preserves this bit position", section 57544.7.3.2.1. However, some machines fail if this bit is in fact preserved 5755because the bit needs to be explicitly set by the OS as a workaround. No 5756machines fail if the bit is not preserved. Therefore, ACPICA no longer 5757attempts to preserve this bit. 5758 5759Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 5760incorrectly formed _PRT package could cause a fault. Added validation to 5761ensure that each package element is actually a sub-package. 5762 5763Implemented a new interface to install or override a single control 5764method, 5765AcpiInstallMethod. This interface is useful when debugging in order to 5766repair 5767an existing method or to install a missing method without having to 5768override 5769the entire ACPI table. See the ACPICA Programmer Reference for use and 5770examples. Lin Ming, Bob Moore. 5771 5772Fixed several reference count issues with the DdbHandle object that is 5773created from a Load or LoadTable operator. Prevent premature deletion of 5774the 5775object. Also, mark the object as invalid once the table has been 5776unloaded. 5777This is needed because the handle itself may not be deleted after the 5778table 5779unload, depending on whether it has been stored in a named object by the 5780caller. Lin Ming. 5781 5782Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 5783mutexes of the same sync level are acquired but then not released in 5784strict 5785opposite order, the internally maintained Current Sync Level becomes 5786confused 5787and can cause subsequent execution errors. ACPICA BZ 471. 5788 5789Changed the allowable release order for ASL mutex objects. The ACPI 4.0 5790specification has been changed to make the SyncLevel for mutex objects 5791more 5792useful. When releasing a mutex, the SyncLevel of the mutex must now be 5793the 5794same as the current sync level. This makes more sense than the previous 5795rule 5796(SyncLevel less than or equal). This change updates the code to match the 5797specification. 5798 5799Fixed a problem with the local version of the AcpiOsPurgeCache function. 5800The 5801(local) cache must be locked during all cache object deletions. Andrew 5802Baumann. 5803 5804Updated the Load operator to use operation region interfaces. This 5805replaces 5806direct memory mapping with region access calls. Now, all region accesses 5807go 5808through the installed region handler as they should. 5809 5810Simplified and optimized the NsGetNextNode function. Reduced parameter 5811count 5812and reduced code for this frequently used function. 5813 5814Example Code and Data Size: These are the sizes for the OS-independent 5815acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5816debug version of the code includes the debug output trace mechanism and 5817has a 5818much larger code and data size. 5819 5820 Previous Release: 5821 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5822 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5823 Current Release: 5824 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 5825 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 5826 58272) iASL Compiler/Disassembler and Tools: 5828 5829Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some 5830problems 5831with sub-table disassembly and handling invalid sub-tables. Attempt 5832recovery 5833after an invalid sub-table ID. 5834 5835---------------------------------------- 583622 April 2009. Summary of changes for version 20090422: 5837 58381) ACPI CA Core Subsystem: 5839 5840Fixed a compatibility issue with the recently released I/O port 5841protection 5842mechanism. For windows compatibility, 1) On a port protection violation, 5843simply ignore the request and do not return an exception (allow the 5844control 5845method to continue execution.) 2) If only part of the request overlaps a 5846protected port, read/write the individual ports that are not protected. 5847Linux 5848BZ 13036. Lin Ming 5849 5850Enhanced the execution of the ASL/AML BreakPoint operator so that it 5851actually 5852breaks into the AML debugger if the debugger is present. This matches the 5853ACPI-defined behavior. 5854 5855Fixed several possible warnings related to the use of the configurable 5856ACPI_THREAD_ID. This type can now be configured as either an integer or a 5857pointer with no warnings. Also fixes several warnings in printf-like 5858statements for the 64-bit build when the type is configured as a pointer. 5859ACPICA BZ 766, 767. 5860 5861Fixed a number of possible warnings when compiling with gcc 4+ (depending 5862on 5863warning options.) Examples include printf formats, aliasing, unused 5864globals, 5865missing prototypes, missing switch default statements, use of non-ANSI 5866library functions, use of non-ANSI constructs. See generate/unix/Makefile 5867for 5868a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 5869 5870Example Code and Data Size: These are the sizes for the OS-independent 5871acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 5872debug version of the code includes the debug output trace mechanism and 5873has a 5874much larger code and data size. 5875 5876 Previous Release: 5877 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 5878 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 5879 Current Release: 5880 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 5881 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 5882 58832) iASL Compiler/Disassembler and Tools: 5884 5885iASL: Fixed a generation warning from Bison 2.3 and fixed several 5886warnings 5887on 5888the 64-bit build. 5889 5890iASL: Fixed a problem where the Unix/Linux versions of the compiler could 5891not 5892correctly digest Windows/DOS formatted files (with CR/LF). 5893 5894iASL: Added a new option for "quiet mode" (-va) that produces only the 5895compilation summary, not individual errors and warnings. Useful for large 5896batch compilations. 5897 5898AcpiExec: Implemented a new option (-z) to enable a forced 5899semaphore/mutex 5900timeout that can be used to detect hang conditions during execution of 5901AML 5902code (includes both internal semaphores and AML-defined mutexes and 5903events.) 5904 5905Added new makefiles for the generation of acpica in a generic unix-like 5906environment. These makefiles are intended to generate the acpica tools 5907and 5908utilities from the original acpica git source tree structure. 5909 5910Test Suites: Updated and cleaned up the documentation files. Updated the 5911copyrights to 2009, affecting all source files. Use the new version of 5912iASL 5913with quiet mode. Increased the number of available semaphores in the 5914Windows 5915OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, 5916added 5917an alternate implementation of the semaphore timeout to allow aslts to 5918execute fully on Cygwin. 5919 5920---------------------------------------- 592120 March 2009. Summary of changes for version 20090320: 5922 59231) ACPI CA Core Subsystem: 5924 5925Fixed a possible race condition between AcpiWalkNamespace and dynamic 5926table 5927unloads. Added a reader/writer locking mechanism to allow multiple 5928concurrent 5929namespace walks (readers), but block a dynamic table unload until it can 5930gain 5931exclusive write access to the namespace. This fixes a problem where a 5932table 5933unload could (possibly catastrophically) delete the portion of the 5934namespace 5935that is currently being examined by a walk. Adds a new file, utlock.c, 5936that 5937implements the reader/writer lock mechanism. ACPICA BZ 749. 5938 5939Fixed a regression introduced in version 20090220 where a change to the 5940FADT 5941handling could cause the ACPICA subsystem to access non-existent I/O 5942ports. 5943 5944Modified the handling of FADT register and table (FACS/DSDT) addresses. 5945The 5946FADT can contain both 32-bit and 64-bit versions of these addresses. 5947Previously, the 64-bit versions were favored, meaning that if both 32 and 594864 5949versions were valid, but not equal, the 64-bit version was used. This was 5950found to cause some machines to fail. Now, in this case, the 32-bit 5951version 5952is used instead. This now matches the Windows behavior. 5953 5954Implemented a new mechanism to protect certain I/O ports. Provides 5955Microsoft 5956compatibility and protects the standard PC I/O ports from access via AML 5957code. Adds a new file, hwvalid.c 5958 5959Fixed a possible extraneous warning message from the FADT support. The 5960message warns of a 32/64 length mismatch between the legacy and GAS 5961definitions for a register. 5962 5963Removed the obsolete AcpiOsValidateAddress OSL interface. This interface 5964is 5965made obsolete by the port protection mechanism above. It was previously 5966used 5967to validate the entire address range of an operation region, which could 5968be 5969incorrect if the range included illegal ports, but fields within the 5970operation region did not actually access those ports. Validation is now 5971performed on a per-field basis instead of the entire region. 5972 5973Modified the handling of the PM1 Status Register ignored bit (bit 11.) 5974Ignored bits must be "preserved" according to the ACPI spec. Usually, 5975this 5976means a read/modify/write when writing to the register. However, for 5977status 5978registers, writing a one means clear the event. Writing a zero means 5979preserve 5980the event (do not clear.) This behavior is clarified in the ACPI 4.0 5981spec, 5982and the ACPICA code now simply always writes a zero to the ignored bit. 5983 5984Modified the handling of ignored bits for the PM1 A/B Control Registers. 5985As 5986per the ACPI specification, for the control registers, preserve 5987(read/modify/write) all bits that are defined as either reserved or 5988ignored. 5989 5990Updated the handling of write-only bits in the PM1 A/B Control Registers. 5991When reading the register, zero the write-only bits as per the ACPI spec. 5992ACPICA BZ 443. Lin Ming. 5993 5994Removed "Linux" from the list of supported _OSI strings. Linux no longer 5995wants to reply true to this request. The Windows strings are the only 5996paths 5997through the AML that are tested and known to work properly. 5998 5999 Previous Release: 6000 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6001 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6002 Current Release: 6003 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 6004 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 6005 60062) iASL Compiler/Disassembler and Tools: 6007 6008Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c 6009and 6010aetables.c 6011 6012---------------------------------------- 601320 February 2009. Summary of changes for version 20090220: 6014 60151) ACPI CA Core Subsystem: 6016 6017Optimized the ACPI register locking. Removed locking for reads from the 6018ACPI 6019bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock 6020is 6021not required when reading the single-bit registers. The 6022AcpiGetRegisterUnlocked function is no longer needed and has been 6023removed. 6024This will improve performance for reads on these registers. ACPICA BZ 6025760. 6026 6027Fixed the parameter validation for AcpiRead/Write. Now return 6028AE_BAD_PARAMETER if the input register pointer is null, and 6029AE_BAD_ADDRESS 6030if 6031the register has an address of zero. Previously, these cases simply 6032returned 6033AE_OK. For optional registers such as PM1B status/enable/control, the 6034caller 6035should check for a valid register address before calling. ACPICA BZ 748. 6036 6037Renamed the external ACPI bit register access functions. Renamed 6038AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 6039functions. The new names are AcpiReadBitRegister and 6040AcpiWriteBitRegister. 6041Also, restructured the code for these functions by simplifying the code 6042path 6043and condensing duplicate code to reduce code size. 6044 6045Added new functions to transparently handle the possibly split PM1 A/B 6046registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two 6047functions 6048now handle the split registers for PM1 Status, Enable, and Control. 6049ACPICA 6050BZ 6051746. 6052 6053Added a function to handle the PM1 control registers, 6054AcpiHwWritePm1Control. 6055This function writes both of the PM1 control registers (A/B). These 6056registers 6057are different than the PM1 A/B status and enable registers in that 6058different 6059values can be written to the A/B registers. Most notably, the SLP_TYP 6060bits 6061can be different, as per the values returned from the _Sx predefined 6062methods. 6063 6064Removed an extra register write within AcpiHwClearAcpiStatus. This 6065function 6066was writing an optional PM1B status register twice. The existing call to 6067the 6068low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 6069A/B 6070register. ACPICA BZ 751. 6071 6072Split out the PM1 Status registers from the FADT. Added new globals for 6073these 6074registers (A/B), similar to the way the PM1 Enable registers are handled. 6075Instead of overloading the FADT Event Register blocks. This makes the 6076code 6077clearer and less prone to error. 6078 6079Fixed the warning message for when the platform contains too many ACPI 6080tables 6081for the default size of the global root table data structure. The 6082calculation 6083for the truncation value was incorrect. 6084 6085Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 6086obsolete macro, since it is now a simple reference to ->common.type. 6087There 6088were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 6089 6090Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 6091TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 6092simply SLEEP_TYPE. ACPICA BZ 754. 6093 6094Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 6095function is only needed on 64-bit host operating systems and is thus not 6096included for 32-bit hosts. 6097 6098Debug output: print the input and result for invocations of the _OSI 6099reserved 6100control method via the ACPI_LV_INFO debug level. Also, reduced some of 6101the 6102verbosity of this debug level. Len Brown. 6103 6104Example Code and Data Size: These are the sizes for the OS-independent 6105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6106debug version of the code includes the debug output trace mechanism and 6107has a 6108much larger code and data size. 6109 6110 Previous Release: 6111 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6112 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6113 Current Release: 6114 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 6115 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 6116 61172) iASL Compiler/Disassembler and Tools: 6118 6119Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 6120various legal performance profiles. 6121 6122---------------------------------------- 612323 January 2009. Summary of changes for version 20090123: 6124 61251) ACPI CA Core Subsystem: 6126 6127Added the 2009 copyright to all module headers and signons. This affects 6128virtually every file in the ACPICA core subsystem, the iASL compiler, and 6129the tools/utilities. 6130 6131Implemented a change to allow the host to override any ACPI table, 6132including 6133dynamically loaded tables. Previously, only the DSDT could be replaced by 6134the 6135host. With this change, the AcpiOsTableOverride interface is called for 6136each 6137table found in the RSDT/XSDT during ACPICA initialization, and also 6138whenever 6139a table is dynamically loaded via the AML Load operator. 6140 6141Updated FADT flag definitions, especially the Boot Architecture flags. 6142 6143Debugger: For the Find command, automatically pad the input ACPI name 6144with 6145underscores if the name is shorter than 4 characters. This enables a 6146match 6147with the actual namespace entry which is itself padded with underscores. 6148 6149Example Code and Data Size: These are the sizes for the OS-independent 6150acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6151debug version of the code includes the debug output trace mechanism and 6152has a 6153much larger code and data size. 6154 6155 Previous Release: 6156 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6157 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6158 Current Release: 6159 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 6160 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 6161 61622) iASL Compiler/Disassembler and Tools: 6163 6164Fix build error under Bison-2.4. 6165 6166Dissasembler: Enhanced FADT support. Added decoding of the Boot 6167Architecture 6168flags. Now decode all flags, regardless of the FADT version. Flag output 6169includes the FADT version which first defined each flag. 6170 6171The iASL -g option now dumps the RSDT to a file (in addition to the FADT 6172and 6173DSDT). Windows only. 6174 6175---------------------------------------- 617604 December 2008. Summary of changes for version 20081204: 6177 61781) ACPI CA Core Subsystem: 6179 6180The ACPICA Programmer Reference has been completely updated and revamped 6181for 6182this release. This includes updates to the external interfaces, OSL 6183interfaces, the overview sections, and the debugger reference. 6184 6185Several new ACPICA interfaces have been implemented and documented in the 6186programmer reference: 6187AcpiReset - Writes the reset value to the FADT-defined reset register. 6188AcpiDisableAllGpes - Disable all available GPEs. 6189AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 6190AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 6191AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 6192AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 6193AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 6194 6195Most of the public ACPI hardware-related interfaces have been moved to a 6196new 6197file, components/hardware/hwxface.c 6198 6199Enhanced the FADT parsing and low-level ACPI register access: The ACPI 6200register lengths within the FADT are now used, and the low level ACPI 6201register access no longer hardcodes the ACPI register lengths. Given that 6202there may be some risk in actually trusting the FADT register lengths, a 6203run- 6204time option was added to fall back to the default hardcoded lengths if 6205the 6206FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 6207option is set to true for now, and a warning is issued if a suspicious 6208FADT 6209register length is overridden with the default value. 6210 6211Fixed a reference count issue in NsRepairObject. This problem was 6212introduced 6213in version 20081031 as part of a fix to repair Buffer objects within 6214Packages. Lin Ming. 6215 6216Added semaphore support to the Linux/Unix application OS-services layer 6217(OSL). ACPICA BZ 448. Lin Ming. 6218 6219Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 6220will 6221be implemented in the OSL, or will binary semaphores be used instead. 6222 6223Example Code and Data Size: These are the sizes for the OS-independent 6224acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6225debug version of the code includes the debug output trace mechanism and 6226has a 6227much larger code and data size. 6228 6229 Previous Release: 6230 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6231 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6232 Current Release: 6233 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 6234 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 6235 62362) iASL Compiler/Disassembler and Tools: 6237 6238iASL: Completed the '-e' option to include additional ACPI tables in 6239order 6240to 6241aid with disassembly and External statement generation. ACPICA BZ 742. 6242Lin 6243Ming. 6244 6245iASL: Removed the "named object in while loop" error. The compiler cannot 6246determine how many times a loop will execute. ACPICA BZ 730. 6247 6248Disassembler: Implemented support for FADT revision 2 (MS extension). 6249ACPICA 6250BZ 743. 6251 6252Disassembler: Updates for several ACPI data tables (HEST, EINJ, and 6253MCFG). 6254 6255---------------------------------------- 625631 October 2008. Summary of changes for version 20081031: 6257 62581) ACPI CA Core Subsystem: 6259 6260Restructured the ACPICA header files into public/private. acpi.h now 6261includes 6262only the "public" acpica headers. All other acpica headers are "private" 6263and 6264should not be included by acpica users. One new file, accommon.h is used 6265to 6266include the commonly used private headers for acpica code generation. 6267Future 6268plans include moving all private headers to a new subdirectory. 6269 6270Implemented an automatic Buffer->String return value conversion for 6271predefined ACPI methods. For these methods (such as _BIF), added 6272automatic 6273conversion for return objects that are required to be a String, but a 6274Buffer 6275was found instead. This can happen when reading string battery data from 6276an 6277operation region, because it used to be difficult to convert the data 6278from 6279buffer to string from within the ASL. Ensures that the host OS is 6280provided 6281with a valid null-terminated string. Linux BZ 11822. 6282 6283Updated the FACS waking vector interfaces. Split 6284AcpiSetFirmwareWakingVector 6285into two: one for the 32-bit vector, another for the 64-bit vector. This 6286is 6287required because the host OS must setup the wake much differently for 6288each 6289vector (real vs. protected mode, etc.) and the interface itself should 6290not 6291be 6292deciding which vector to use. Also, eliminated the 6293GetFirmwareWakingVector 6294interface, as it served no purpose (only the firmware reads the vector, 6295OS 6296only writes the vector.) ACPICA BZ 731. 6297 6298Implemented a mechanism to escape infinite AML While() loops. Added a 6299loop 6300counter to force exit from AML While loops if the count becomes too 6301large. 6302This can occur in poorly written AML when the hardware does not respond 6303within a while loop and the loop does not implement a timeout. The 6304maximum 6305loop count is configurable. A new exception code is returned when a loop 6306is 6307broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 6308 6309Optimized the execution of AML While loops. Previously, a control state 6310object was allocated and freed for each execution of the loop. The 6311optimization is to simply reuse the control state for each iteration. 6312This 6313speeds up the raw loop execution time by about 5%. 6314 6315Enhanced the implicit return mechanism. For Windows compatibility, return 6316an 6317implicit integer of value zero for methods that contain no executable 6318code. 6319Such methods are seen in the field as stubs (presumably), and can cause 6320drivers to fail if they expect a return value. Lin Ming. 6321 6322Allow multiple backslashes as root prefixes in namepaths. In a fully 6323qualified namepath, allow multiple backslash prefixes. This can happen 6324(and 6325is seen in the field) because of the use of a double-backslash in strings 6326(since backslash is the escape character) causing confusion. ACPICA BZ 6327739 6328Lin Ming. 6329 6330Emit a warning if two different FACS or DSDT tables are discovered in the 6331FADT. Checks if there are two valid but different addresses for the FACS 6332and 6333DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 6334 6335Consolidated the method argument count validation code. Merged the code 6336that 6337validates control method argument counts into the predefined validation 6338module. Eliminates possible multiple warnings for incorrect argument 6339counts. 6340 6341Implemented ACPICA example code. Includes code for ACPICA initialization, 6342handler installation, and calling a control method. Available at 6343source/tools/examples. 6344 6345Added a global pointer for FACS table to simplify internal FACS access. 6346Use 6347the global pointer instead of using AcpiGetTableByIndex for each FACS 6348access. 6349This simplifies the code for the Global Lock and the Firmware Waking 6350Vector(s). 6351 6352Example Code and Data Size: These are the sizes for the OS-independent 6353acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6354debug version of the code includes the debug output trace mechanism and 6355has a 6356much larger code and data size. 6357 6358 Previous Release: 6359 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6360 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6361 Current Release: 6362 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 6363 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 6364 63652) iASL Compiler/Disassembler and Tools: 6366 6367iASL: Improved disassembly of external method calls. Added the -e option 6368to 6369allow the inclusion of additional ACPI tables to help with the 6370disassembly 6371of 6372method invocations and the generation of external declarations during the 6373disassembly. Certain external method invocations cannot be disassembled 6374properly without the actual declaration of the method. Use the -e option 6375to 6376include the table where the external method(s) are actually declared. 6377Most 6378useful for disassembling SSDTs that make method calls back to the master 6379DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl 6380-d 6381-e dsdt.aml ssdt1.aml 6382 6383iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 6384problem where the use of an alias within a namepath would result in a not 6385found error or cause the compiler to fault. Also now allows forward 6386references from the Alias operator itself. ACPICA BZ 738. 6387 6388---------------------------------------- 638926 September 2008. Summary of changes for version 20080926: 6390 63911) ACPI CA Core Subsystem: 6392 6393Designed and implemented a mechanism to validate predefined ACPI methods 6394and 6395objects. This code validates the predefined ACPI objects (objects whose 6396names 6397start with underscore) that appear in the namespace, at the time they are 6398evaluated. The argument count and the type of the returned object are 6399validated against the ACPI specification. The purpose of this validation 6400is 6401to detect problems with the BIOS-implemented predefined ACPI objects 6402before 6403the results are returned to the ACPI-related drivers. Future enhancements 6404may 6405include actual repair of incorrect return objects where possible. Two new 6406files are nspredef.c and acpredef.h. 6407 6408Fixed a fault in the AML parser if a memory allocation fails during the 6409Op 6410completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 6411 6412Fixed an issue with implicit return compatibility. This change improves 6413the 6414implicit return mechanism to be more compatible with the MS interpreter. 6415Lin 6416Ming, ACPICA BZ 349. 6417 6418Implemented support for zero-length buffer-to-string conversions. Allow 6419zero 6420length strings during interpreter buffer-to-string conversions. For 6421example, 6422during the ToDecimalString and ToHexString operators, as well as implicit 6423conversions. Fiodor Suietov, ACPICA BZ 585. 6424 6425Fixed two possible memory leaks in the error exit paths of 6426AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions 6427are 6428similar in that they use a stack of state objects in order to eliminate 6429recursion. The stack must be fully unwound and deallocated if an error 6430occurs. Lin Ming. ACPICA BZ 383. 6431 6432Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 6433global 6434ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 6435Moore ACPICA BZ 442. 6436 6437Removed the obsolete version number in module headers. Removed the 6438"$Revision" number that appeared in each module header. This version 6439number 6440was useful under SourceSafe and CVS, but has no meaning under git. It is 6441not 6442only incorrect, it could also be misleading. 6443 6444Example Code and Data Size: These are the sizes for the OS-independent 6445acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6446debug version of the code includes the debug output trace mechanism and 6447has a 6448much larger code and data size. 6449 6450 Previous Release: 6451 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6452 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6453 Current Release: 6454 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 6455 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 6456 6457---------------------------------------- 645829 August 2008. Summary of changes for version 20080829: 6459 64601) ACPI CA Core Subsystem: 6461 6462Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 6463Reference. Changes include the elimination of cheating on the Object 6464field 6465for the DdbHandle subtype, addition of a reference class field to 6466differentiate the various reference types (instead of an AML opcode), and 6467the 6468cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 6469 6470Reduce an error to a warning for an incorrect method argument count. 6471Previously aborted with an error if too few arguments were passed to a 6472control method via the external ACPICA interface. Now issue a warning 6473instead 6474and continue. Handles the case where the method inadvertently declares 6475too 6476many arguments, but does not actually use the extra ones. Applies mainly 6477to 6478the predefined methods. Lin Ming. Linux BZ 11032. 6479 6480Disallow the evaluation of named object types with no intrinsic value. 6481Return 6482AE_TYPE for objects that have no value and therefore evaluation is 6483undefined: 6484Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation 6485of 6486these types were allowed, but an exception would be generated at some 6487point 6488during the evaluation. Now, the error is generated up front. 6489 6490Fixed a possible memory leak in the AcpiNsGetExternalPathname function 6491(nsnames.c). Fixes a leak in the error exit path. 6492 6493Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 6494debug 6495levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 6496ACPI_EXCEPTION 6497interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 6498ACPI_LV_EVENTS. 6499 6500Removed obsolete and/or unused exception codes from the acexcep.h header. 6501There is the possibility that certain device drivers may be affected if 6502they 6503use any of these exceptions. 6504 6505The ACPICA documentation has been added to the public git source tree, 6506under 6507acpica/documents. Included are the ACPICA programmer reference, the iASL 6508compiler reference, and the changes.txt release logfile. 6509 6510Example Code and Data Size: These are the sizes for the OS-independent 6511acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6512debug version of the code includes the debug output trace mechanism and 6513has a 6514much larger code and data size. 6515 6516 Previous Release: 6517 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6518 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6519 Current Release: 6520 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6521 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 6522 65232) iASL Compiler/Disassembler and Tools: 6524 6525Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 6526defines _SCP with 3 arguments. Previous versions defined it with only 1 6527argument. iASL now allows both definitions. 6528 6529iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for 6530zero- 6531length subtables when disassembling ACPI tables. Also fixed a couple of 6532errors where a full 16-bit table type field was not extracted from the 6533input 6534properly. 6535 6536acpisrc: Improve comment counting mechanism for generating source code 6537statistics. Count first and last lines of multi-line comments as 6538whitespace, 6539not comment lines. Handle Linux legal header in addition to standard 6540acpica 6541header. 6542 6543---------------------------------------- 6544 654529 July 2008. Summary of changes for version 20080729: 6546 65471) ACPI CA Core Subsystem: 6548 6549Fix a possible deadlock in the GPE dispatch. Remove call to 6550AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 6551attempt 6552to acquire the GPE lock but can deadlock since the GPE lock is already 6553held 6554at dispatch time. This code was introduced in version 20060831 as a 6555response 6556to Linux BZ 6881 and has since been removed from Linux. 6557 6558Add a function to dereference returned reference objects. Examines the 6559return 6560object from a call to AcpiEvaluateObject. Any Index or RefOf references 6561are 6562automatically dereferenced in an attempt to return something useful 6563(these 6564reference types cannot be converted into an external ACPI_OBJECT.) 6565Provides 6566MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 6567 6568x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 6569subtables for the MADT and one new subtable for the SRAT. Includes 6570disassembler and AcpiSrc support. Data from the Intel 64 Architecture 6571x2APIC 6572Specification, June 2008. 6573 6574Additional error checking for pathname utilities. Add error check after 6575all 6576calls to AcpiNsGetPathnameLength. Add status return from 6577AcpiNsBuildExternalPath and check after all calls. Add parameter 6578validation 6579to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 6580 6581Return status from the global init function AcpiUtGlobalInitialize. This 6582is 6583used by both the kernel subsystem and the utilities such as iASL 6584compiler. 6585The function could possibly fail when the caches are initialized. Yang 6586Yi. 6587 6588Add a function to decode reference object types to strings. Created for 6589improved error messages. 6590 6591Improve object conversion error messages. Better error messages during 6592object 6593conversion from internal to the external ACPI_OBJECT. Used for external 6594calls 6595to AcpiEvaluateObject. 6596 6597Example Code and Data Size: These are the sizes for the OS-independent 6598acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6599debug version of the code includes the debug output trace mechanism and 6600has a 6601much larger code and data size. 6602 6603 Previous Release: 6604 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6605 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6606 Current Release: 6607 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 6608 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 6609 66102) iASL Compiler/Disassembler and Tools: 6611 6612Debugger: fix a possible hang when evaluating non-methods. Fixes a 6613problem 6614introduced in version 20080701. If the object being evaluated (via 6615execute 6616command) is not a method, the debugger can hang while trying to obtain 6617non- 6618existent parameters. 6619 6620iASL: relax error for using reserved "_T_x" identifiers. These names can 6621appear in a disassembled ASL file if they were emitted by the original 6622compiler. Instead of issuing an error or warning and forcing the user to 6623manually change these names, issue a remark instead. 6624 6625iASL: error if named object created in while loop. Emit an error if any 6626named 6627object is created within a While loop. If allowed, this code will 6628generate 6629a 6630run-time error on the second iteration of the loop when an attempt is 6631made 6632to 6633create the same named object twice. ACPICA bugzilla 730. 6634 6635iASL: Support absolute pathnames for include files. Add support for 6636absolute 6637pathnames within the Include operator. previously, only relative 6638pathnames 6639were supported. 6640 6641iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 6642Descriptor. 6643The ACPI spec requires one interrupt minimum. BZ 423 6644 6645iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 6646Handles the case for the Interrupt Resource Descriptor where 6647the ResourceSource argument is omitted but ResourceSourceIndex 6648is present. Now leave room for the Index. BZ 426 6649 6650iASL: Prevent error message if CondRefOf target does not exist. Fixes 6651cases 6652where an error message is emitted if the target does not exist. BZ 516 6653 6654iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 6655(get ACPI tables on Windows). This was apparently broken in version 665620070919. 6657 6658AcpiXtract: Handle EOF while extracting data. Correctly handle the case 6659where 6660the EOF happens immediately after the last table in the input file. Print 6661completion message. Previously, no message was displayed in this case. 6662 6663---------------------------------------- 666401 July 2008. Summary of changes for version 20080701: 6665 66660) Git source tree / acpica.org 6667 6668Fixed a problem where a git-clone from http would not transfer the entire 6669source tree. 6670 66711) ACPI CA Core Subsystem: 6672 6673Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 6674enable bit. Now performs a read-change-write of the enable register 6675instead 6676of simply writing out the cached enable mask. This will prevent 6677inadvertent 6678enabling of GPEs if a rogue GPE is received during initialization (before 6679GPE 6680handlers are installed.) 6681 6682Implemented a copy for dynamically loaded tables. Previously, dynamically 6683loaded tables were simply mapped - but on some machines this memory is 6684corrupted after suspend. Now copy the table to a local buffer. For the 6685OpRegion case, added checksum verify. Use the table length from the table 6686header, not the region length. For the Buffer case, use the table length 6687also. Dennis Noordsij, Bob Moore. BZ 10734 6688 6689Fixed a problem where the same ACPI table could not be dynamically loaded 6690and 6691unloaded more than once. Without this change, a table cannot be loaded 6692again 6693once it has been loaded/unloaded one time. The current mechanism does not 6694unregister a table upon an unload. During a load, if the same table is 6695found, 6696this no longer returns an exception. BZ 722 6697 6698Fixed a problem where the wrong descriptor length was calculated for the 6699EndTag descriptor in 64-bit mode. The "minimal" descriptors such as 6700EndTag 6701are calculated as 12 bytes long, but the actual length in the internal 6702descriptor is 16 because of the round-up to 8 on the 64-bit build. 6703Reported 6704by Linn Crosetto. BZ 728 6705 6706Fixed a possible memory leak in the Unload operator. The DdbHandle 6707returned 6708by Load() did not have its reference count decremented during unload, 6709leading 6710to a memory leak. Lin Ming. BZ 727 6711 6712Fixed a possible memory leak when deleting thermal/processor objects. Any 6713associated notify handlers (and objects) were not being deleted. Fiodor 6714Suietov. BZ 506 6715 6716Fixed the ordering of the ASCII names in the global mutex table to match 6717the 6718actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 6719only. 6720Vegard Nossum. BZ 726 6721 6722Enhanced the AcpiGetObjectInfo interface to return the number of required 6723arguments if the object is a control method. Added this call to the 6724debugger 6725so the proper number of default arguments are passed to a method. This 6726prevents a warning when executing methods from AcpiExec. 6727 6728Added a check for an invalid handle in AcpiGetObjectInfo. Return 6729AE_BAD_PARAMETER if input handle is invalid. BZ 474 6730 6731Fixed an extraneous warning from exconfig.c on the 64-bit build. 6732 6733Example Code and Data Size: These are the sizes for the OS-independent 6734acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6735debug version of the code includes the debug output trace mechanism and 6736has a 6737much larger code and data size. 6738 6739 Previous Release: 6740 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6741 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6742 Current Release: 6743 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 6744 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 6745 67462) iASL Compiler/Disassembler and Tools: 6747 6748iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 6749resource descriptor names. 6750 6751iASL: Detect invalid ASCII characters in input (windows version). Removed 6752the 6753"-CF" flag from the flex compile, enables correct detection of non-ASCII 6754characters in the input. BZ 441 6755 6756iASL: Eliminate warning when result of LoadTable is not used. Eliminate 6757the 6758"result of operation not used" warning when the DDB handle returned from 6759LoadTable is not used. The warning is not needed. BZ 590 6760 6761AcpiExec: Add support for dynamic table load/unload. Now calls _CFG 6762method 6763to 6764pass address of table to the AML. Added option to disable OpRegion 6765simulation 6766to allow creation of an OpRegion with a real address that was passed to 6767_CFG. 6768All of this allows testing of the Load and Unload operators from 6769AcpiExec. 6770 6771Debugger: update tables command for unloaded tables. Handle unloaded 6772tables 6773and use the standard table header output routine. 6774 6775---------------------------------------- 677609 June 2008. Summary of changes for version 20080609: 6777 67781) ACPI CA Core Subsystem: 6779 6780Implemented a workaround for reversed _PRT entries. A significant number 6781of 6782BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 6783change dynamically detects and repairs this problem. Provides 6784compatibility 6785with MS ACPI. BZ 6859 6786 6787Simplified the internal ACPI hardware interfaces to eliminate the locking 6788flag parameter from Register Read/Write. Added a new external interface, 6789AcpiGetRegisterUnlocked. 6790 6791Fixed a problem where the invocation of a GPE control method could hang. 6792This 6793was a regression introduced in 20080514. The new method argument count 6794validation mechanism can enter an infinite loop when a GPE method is 6795dispatched. Problem fixed by removing the obsolete code that passed GPE 6796block 6797information to the notify handler via the control method parameter 6798pointer. 6799 6800Fixed a problem where the _SST execution status was incorrectly returned 6801to 6802the caller of AcpiEnterSleepStatePrep. This was a regression introduced 6803in 680420080514. _SST is optional and a NOT_FOUND exception should never be 6805returned. BZ 716 6806 6807Fixed a problem where a deleted object could be accessed from within the 6808AML 6809parser. This was a regression introduced in version 20080123 as a fix for 6810the 6811Unload operator. Lin Ming. BZ 10669 6812 6813Cleaned up the debug operand dump mechanism. Eliminated unnecessary 6814operands 6815and eliminated the use of a negative index in a loop. Operands are now 6816displayed in the correct order, not backwards. This also fixes a 6817regression 6818introduced in 20080514 on 64-bit systems where the elimination of 6819ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 6820715 6821 6822Fixed a possible memory leak in EvPciConfigRegionSetup where the error 6823exit 6824path did not delete a locally allocated structure. 6825 6826Updated definitions for the DMAR and SRAT tables to synchronize with the 6827current specifications. Includes disassembler support. 6828 6829Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 6830loop termination value was used. Loop terminated on iteration early, 6831missing 6832one mutex. Linn Crosetto 6833 6834Example Code and Data Size: These are the sizes for the OS-independent 6835acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6836debug version of the code includes the debug output trace mechanism and 6837has a 6838much larger code and data size. 6839 6840 Previous Release: 6841 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6842 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6843 Current Release: 6844 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 6845 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 6846 68472) iASL Compiler/Disassembler and Tools: 6848 6849Disassembler: Implemented support for EisaId() within _CID objects. Now 6850disassemble integer _CID objects back to EisaId invocations, including 6851multiple integers within _CID packages. Includes single-step support for 6852debugger also. 6853 6854Disassembler: Added support for DMAR and SRAT table definition changes. 6855 6856---------------------------------------- 685714 May 2008. Summary of changes for version 20080514: 6858 68591) ACPI CA Core Subsystem: 6860 6861Fixed a problem where GPEs were enabled too early during the ACPICA 6862initialization. This could lead to "handler not installed" errors on some 6863machines. Moved GPE enable until after _REG/_STA/_INI methods are run. 6864This 6865ensures that all operation regions and devices throughout the namespace 6866have 6867been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 6868 6869Implemented a change to the enter sleep code. Moved execution of the _GTS 6870method to just before setting sleep enable bit. The execution was moved 6871from 6872AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 6873immediately before the SLP_EN bit is set, as per the ACPI specification. 6874Luming Yu, BZ 1653. 6875 6876Implemented a fix to disable unknown GPEs (2nd version). Now always 6877disable 6878the GPE, even if ACPICA thinks that that it is already disabled. It is 6879possible that the AML or some other code has enabled the GPE unbeknownst 6880to 6881the ACPICA code. 6882 6883Fixed a problem with the Field operator where zero-length fields would 6884return 6885an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 6886ASL 6887field declarations in Field(), BankField(), and IndexField(). BZ 10606. 6888 6889Implemented a fix for the Load operator, now load the table at the 6890namespace 6891root. This reverts a change introduced in version 20071019. The table is 6892now 6893loaded at the namespace root even though this goes against the ACPI 6894specification. This provides compatibility with other ACPI 6895implementations. 6896The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 6897Ming. 6898 6899Fixed a problem where ACPICA would not Load() tables with unusual 6900signatures. 6901Now ignore ACPI table signature for Load() operator. Only "SSDT" is 6902acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 6903Therefore, signature validation is worthless. Apparently MS ACPI accepts 6904such 6905signatures, ACPICA must be compatible. BZ 10454. 6906 6907Fixed a possible negative array index in AcpiUtValidateException. Added 6908NULL 6909fields to the exception string arrays to eliminate a -1 subtraction on 6910the 6911SubStatus field. 6912 6913Updated the debug tracking macros to reduce overall code and data size. 6914Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 6915instead of pointers to static strings. Jan Beulich and Bob Moore. 6916 6917Implemented argument count checking in control method invocation via 6918AcpiEvaluateObject. Now emit an error if too few arguments, warning if 6919too 6920many. This applies only to extern programmatic control method execution, 6921not 6922method-to-method calls within the AML. Lin Ming. 6923 6924Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is 6925no 6926longer needed, especially with the removal of 16-bit support. It was 6927replaced 6928mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 6929bit 6930on 693132/64-bit platforms is required. 6932 6933Added the C const qualifier for appropriate string constants -- mostly 6934MODULE_NAME and printf format strings. Jan Beulich. 6935 6936Example Code and Data Size: These are the sizes for the OS-independent 6937acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 6938debug version of the code includes the debug output trace mechanism and 6939has a 6940much larger code and data size. 6941 6942 Previous Release: 6943 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 6944 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 6945 Current Release: 6946 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 6947 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 6948 69492) iASL Compiler/Disassembler and Tools: 6950 6951Implemented ACPI table revision ID validation in the disassembler. Zero 6952is 6953always invalid. For DSDTs, the ID controls the interpreter integer width. 69541 6955means 32-bit and this is unusual. 2 or greater is 64-bit. 6956 6957---------------------------------------- 695821 March 2008. Summary of changes for version 20080321: 6959 69601) ACPI CA Core Subsystem: 6961 6962Implemented an additional change to the GPE support in order to suppress 6963spurious or stray GPEs. The AcpiEvDisableGpe function will now 6964permanently 6965disable incoming GPEs that are neither enabled nor disabled -- meaning 6966that 6967the GPE is unknown to the system. This should prevent future interrupt 6968floods 6969from that GPE. BZ 6217 (Zhang Rui) 6970 6971Fixed a problem where NULL package elements were not returned to the 6972AcpiEvaluateObject interface correctly. The element was simply ignored 6973instead of returning a NULL ACPI_OBJECT package element, potentially 6974causing 6975a buffer overflow and/or confusing the caller who expected a fixed number 6976of 6977elements. BZ 10132 (Lin Ming, Bob Moore) 6978 6979Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 6980Dword, 6981Qword), Field, BankField, and IndexField operators when invoked from 6982inside 6983an executing control method. In this case, these operators created 6984namespace 6985nodes that were incorrectly left marked as permanent nodes instead of 6986temporary nodes. This could cause a problem if there is race condition 6987between an exiting control method and a running namespace walk. (Reported 6988by 6989Linn Crosetto) 6990 6991Fixed a problem where the CreateField and CreateXXXField operators would 6992incorrectly allow duplicate names (the name of the field) with no 6993exception 6994generated. 6995 6996Implemented several changes for Notify handling. Added support for new 6997Notify 6998values (ACPI 2.0+) and improved the Notify debug output. Notify on 6999PowerResource objects is no longer allowed, as per the ACPI 7000specification. 7001(Bob Moore, Zhang Rui) 7002 7003All Reference Objects returned via the AcpiEvaluateObject interface are 7004now 7005marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 7006for 7007NULL objects - either NULL package elements or unresolved named 7008references. 7009 7010Fixed a problem where an extraneous debug message was produced for 7011package 7012objects (when debugging enabled). The message "Package List length larger 7013than NumElements count" is now produced in the correct case, and is now 7014an 7015error message rather than a debug message. Added a debug message for the 7016opposite case, where NumElements is larger than the Package List (the 7017package 7018will be padded out with NULL elements as per the ACPI spec.) 7019 7020Implemented several improvements for the output of the ASL "Debug" object 7021to 7022clarify and keep all data for a given object on one output line. 7023 7024Fixed two size calculation issues with the variable-length Start 7025Dependent 7026resource descriptor. 7027 7028Example Code and Data Size: These are the sizes for the OS-independent 7029acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7030debug version of the code includes the debug output trace mechanism and 7031has 7032a much larger code and data size. 7033 7034 Previous Release: 7035 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7036 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7037 Current Release: 7038 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 7039 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 7040 70412) iASL Compiler/Disassembler and Tools: 7042 7043Fixed a problem with the use of the Switch operator where execution of 7044the 7045containing method by multiple concurrent threads could cause an 7046AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 7047actual Switch opcode, it must be simulated with local named temporary 7048variables and if/else pairs. The solution chosen was to mark any method 7049that 7050uses Switch as Serialized, thus preventing multiple thread entries. BZ 7051469. 7052 7053---------------------------------------- 705413 February 2008. Summary of changes for version 20080213: 7055 70561) ACPI CA Core Subsystem: 7057 7058Implemented another MS compatibility design change for GPE/Notify 7059handling. 7060GPEs are now cleared/enabled asynchronously to allow all pending notifies 7061to 7062complete first. It is expected that the OSL will queue the enable request 7063behind all pending notify requests (may require changes to the local host 7064OSL 7065in AcpiOsExecute). Alexey Starikovskiy. 7066 7067Fixed a problem where buffer and package objects passed as arguments to a 7068control method via the external AcpiEvaluateObject interface could cause 7069an 7070AE_AML_INTERNAL exception depending on the order and type of operators 7071executed by the target control method. 7072 7073Fixed a problem where resource descriptor size optimization could cause a 7074problem when a _CRS resource template is passed to a _SRS method. The 7075_SRS 7076resource template must use the same descriptors (with the same size) as 7077returned from _CRS. This change affects the following resource 7078descriptors: 7079IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 70809487) 7081 7082Fixed a problem where a CopyObject to RegionField, BankField, and 7083IndexField 7084objects did not perform an implicit conversion as it should. These types 7085must 7086retain their initial type permanently as per the ACPI specification. 7087However, 7088a CopyObject to all other object types should not perform an implicit 7089conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 7090 7091Fixed a problem with the AcpiGetDevices interface where the mechanism to 7092match device CIDs did not examine the entire list of available CIDs, but 7093instead aborted on the first non-matching CID. Andrew Patterson. 7094 7095Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 7096was 7097inadvertently changed to return a 16-bit value instead of a 32-bit value, 7098truncating the upper dword of a 64-bit value. This macro is only used to 7099display debug output, so no incorrect calculations were made. Also, 7100reimplemented the macro so that a 64-bit shift is not performed by 7101inefficient compilers. 7102 7103Added missing va_end statements that should correspond with each va_start 7104statement. 7105 7106Example Code and Data Size: These are the sizes for the OS-independent 7107acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7108debug version of the code includes the debug output trace mechanism and 7109has 7110a much larger code and data size. 7111 7112 Previous Release: 7113 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7114 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7115 Current Release: 7116 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 7117 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 7118 71192) iASL Compiler/Disassembler and Tools: 7120 7121Implemented full disassembler support for the following new ACPI tables: 7122BERT, EINJ, and ERST. Implemented partial disassembler support for the 7123complicated HEST table. These tables support the Windows Hardware Error 7124Architecture (WHEA). 7125 7126---------------------------------------- 712723 January 2008. Summary of changes for version 20080123: 7128 71291) ACPI CA Core Subsystem: 7130 7131Added the 2008 copyright to all module headers and signons. This affects 7132virtually every file in the ACPICA core subsystem, the iASL compiler, and 7133the tools/utilities. 7134 7135Fixed a problem with the SizeOf operator when used with Package and 7136Buffer 7137objects. These objects have deferred execution for some arguments, and 7138the 7139execution is now completed before the SizeOf is executed. This problem 7140caused 7141unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) 7142BZ 71439558 7144 7145Implemented an enhancement to the interpreter "slack mode". In the 7146absence 7147of 7148an explicit return or an implicitly returned object from the last 7149executed 7150opcode, a control method will now implicitly return an integer of value 0 7151for 7152Microsoft compatibility. (Lin Ming) BZ 392 7153 7154Fixed a problem with the Load operator where an exception was not 7155returned 7156in 7157the case where the table is already loaded. (Lin Ming) BZ 463 7158 7159Implemented support for the use of DDBHandles as an Indexed Reference, as 7160per 7161the ACPI spec. (Lin Ming) BZ 486 7162 7163Implemented support for UserTerm (Method invocation) for the Unload 7164operator 7165as per the ACPI spec. (Lin Ming) BZ 580 7166 7167Fixed a problem with the LoadTable operator where the OemId and 7168OemTableId 7169input strings could cause unexpected failures if they were shorter than 7170the 7171maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 7172 7173Implemented support for UserTerm (Method invocation) for the Unload 7174operator 7175as per the ACPI spec. (Lin Ming) BZ 580 7176 7177Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 7178HEST, 7179IBFT, UEFI, WDAT. Disassembler support is forthcoming. 7180 7181Example Code and Data Size: These are the sizes for the OS-independent 7182acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7183debug version of the code includes the debug output trace mechanism and 7184has 7185a much larger code and data size. 7186 7187 Previous Release: 7188 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7189 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7190 Current Release: 7191 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 7192 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 7193 71942) iASL Compiler/Disassembler and Tools: 7195 7196Implemented support in the disassembler for checksum validation on 7197incoming 7198binary DSDTs and SSDTs. If incorrect, a message is displayed within the 7199table 7200header dump at the start of the disassembly. 7201 7202Implemented additional debugging information in the namespace listing 7203file 7204created during compilation. In addition to the namespace hierarchy, the 7205full 7206pathname to each namespace object is displayed. 7207 7208Fixed a problem with the disassembler where invalid ACPI tables could 7209cause 7210faults or infinite loops. 7211 7212Fixed an unexpected parse error when using the optional "parameter types" 7213list in a control method declaration. (Lin Ming) BZ 397 7214 7215Fixed a problem where two External declarations with the same name did 7216not 7217cause an error (Lin Ming) BZ 509 7218 7219Implemented support for full TermArgs (adding Argx, Localx and method 7220invocation) for the ParameterData parameter to the LoadTable operator. 7221(Lin 7222Ming) BZ 583,587 7223 7224---------------------------------------- 722519 December 2007. Summary of changes for version 20071219: 7226 72271) ACPI CA Core Subsystem: 7228 7229Implemented full support for deferred execution for the TermArg string 7230arguments for DataTableRegion. This enables forward references and full 7231operand resolution for the three string arguments. Similar to 7232OperationRegion 7233deferred argument execution.) Lin Ming. BZ 430 7234 7235Implemented full argument resolution support for the BankValue argument 7236to 7237BankField. Previously, only constants were supported, now any TermArg may 7238be 7239used. Lin Ming BZ 387, 393 7240 7241Fixed a problem with AcpiGetDevices where the search of a branch of the 7242device tree could be terminated prematurely. In accordance with the ACPI 7243specification, the search down the current branch is terminated if a 7244device 7245is both not present and not functional (instead of just not present.) 7246Yakui 7247Zhao. 7248 7249Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly 7250if 7251the underlying AML code changed the GPE enable registers. Now, any 7252unknown 7253incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 7254disabled 7255instead of simply ignored. Rui Zhang. 7256 7257Fixed a problem with Index Fields where the Index register was 7258incorrectly 7259limited to a maximum of 32 bits. Now any size may be used. 7260 7261Fixed a couple memory leaks associated with "implicit return" objects 7262when 7263the AML Interpreter slack mode is enabled. Lin Ming BZ 349 7264 7265Example Code and Data Size: These are the sizes for the OS-independent 7266acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7267debug version of the code includes the debug output trace mechanism and 7268has 7269a much larger code and data size. 7270 7271 Previous Release: 7272 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7273 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7274 Current Release: 7275 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 7276 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 7277 7278---------------------------------------- 727914 November 2007. Summary of changes for version 20071114: 7280 72811) ACPI CA Core Subsystem: 7282 7283Implemented event counters for each of the Fixed Events, the ACPI SCI 7284(interrupt) itself, and control methods executed. Named 7285AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. 7286These 7287should be useful for debugging and statistics. 7288 7289Implemented a new external interface, AcpiGetStatistics, to retrieve the 7290contents of the various event counters. Returns the current values for 7291AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 7292AcpiMethodCount. The interface can be expanded in the future if new 7293counters 7294are added. Device drivers should use this interface rather than access 7295the 7296counters directly. 7297 7298Fixed a problem with the FromBCD and ToBCD operators. With some 7299compilers, 7300the ShortDivide function worked incorrectly, causing problems with the 7301BCD 7302functions with large input values. A truncation from 64-bit to 32-bit 7303inadvertently occurred. Internal BZ 435. Lin Ming 7304 7305Fixed a problem with Index references passed as method arguments. 7306References 7307passed as arguments to control methods were dereferenced immediately 7308(before 7309control was passed to the called method). The references are now 7310correctly 7311passed directly to the called method. BZ 5389. Lin Ming 7312 7313Fixed a problem with CopyObject used in conjunction with the Index 7314operator. 7315The reference was incorrectly dereferenced before the copy. The reference 7316is 7317now correctly copied. BZ 5391. Lin Ming 7318 7319Fixed a problem with Control Method references within Package objects. 7320These 7321references are now correctly generated. This completes the package 7322construction overhaul that began in version 20071019. 7323 7324Example Code and Data Size: These are the sizes for the OS-independent 7325acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7326debug version of the code includes the debug output trace mechanism and 7327has 7328a much larger code and data size. 7329 7330 Previous Release: 7331 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7332 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7333 Current Release: 7334 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 7335 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 7336 7337 73382) iASL Compiler/Disassembler and Tools: 7339 7340The AcpiExec utility now installs handlers for all of the predefined 7341Operation Region types. New types supported are: PCI_Config, CMOS, and 7342PCIBARTarget. 7343 7344Fixed a problem with the 64-bit version of AcpiExec where the extended 7345(64- 7346bit) address fields for the DSDT and FACS within the FADT were not being 7347used, causing truncation of the upper 32-bits of these addresses. Lin 7348Ming 7349and Bob Moore 7350 7351---------------------------------------- 735219 October 2007. Summary of changes for version 20071019: 7353 73541) ACPI CA Core Subsystem: 7355 7356Fixed a problem with the Alias operator when the target of the alias is a 7357named ASL operator that opens a new scope -- Scope, Device, 7358PowerResource, 7359Processor, and ThermalZone. In these cases, any children of the original 7360operator could not be accessed via the alias, potentially causing 7361unexpected 7362AE_NOT_FOUND exceptions. (BZ 9067) 7363 7364Fixed a problem with the Package operator where all named references were 7365created as object references and left otherwise unresolved. According to 7366the 7367ACPI specification, a Package can only contain Data Objects or references 7368to 7369control methods. The implication is that named references to Data Objects 7370(Integer, Buffer, String, Package, BufferField, Field) should be resolved 7371immediately upon package creation. This is the approach taken with this 7372change. References to all other named objects (Methods, Devices, Scopes, 7373etc.) are all now properly created as reference objects. (BZ 5328) 7374 7375Reverted a change to Notify handling that was introduced in version 737620070508. This version changed the Notify handling from asynchronous to 7377fully synchronous (Device driver Notify handling with respect to the 7378Notify 7379ASL operator). It was found that this change caused more problems than it 7380solved and was removed by most users. 7381 7382Fixed a problem with the Increment and Decrement operators where the type 7383of 7384the target object could be unexpectedly and incorrectly changed. (BZ 353) 7385Lin Ming. 7386 7387Fixed a problem with the Load and LoadTable operators where the table 7388location within the namespace was ignored. Instead, the table was always 7389loaded into the root or current scope. Lin Ming. 7390 7391Fixed a problem with the Load operator when loading a table from a buffer 7392object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 7393 7394Fixed a problem with the Debug object where a store of a DdbHandle 7395reference 7396object to the Debug object could cause a fault. 7397 7398Added a table checksum verification for the Load operator, in the case 7399where 7400the load is from a buffer. (BZ 578). 7401 7402Implemented additional parameter validation for the LoadTable operator. 7403The 7404length of the input strings SignatureString, OemIdString, and OemTableId 7405are 7406now checked for maximum lengths. (BZ 582) Lin Ming. 7407 7408Example Code and Data Size: These are the sizes for the OS-independent 7409acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7410debug version of the code includes the debug output trace mechanism and 7411has 7412a much larger code and data size. 7413 7414 Previous Release: 7415 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7416 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7417 Current Release: 7418 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 7419 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 7420 7421 74222) iASL Compiler/Disassembler: 7423 7424Fixed a problem where if a single file was specified and the file did not 7425exist, no error message was emitted. (Introduced with wildcard support in 7426version 20070917.) 7427 7428---------------------------------------- 742919 September 2007. Summary of changes for version 20070919: 7430 74311) ACPI CA Core Subsystem: 7432 7433Designed and implemented new external interfaces to install and remove 7434handlers for ACPI table-related events. Current events that are defined 7435are 7436LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 7437they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 7438AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 7439 7440Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 7441(acpi_serialized option on Linux) could cause some systems to hang during 7442initialization. (Bob Moore) BZ 8171 7443 7444Fixed a problem where objects of certain types (Device, ThermalZone, 7445Processor, PowerResource) can be not found if they are declared and 7446referenced from within the same control method (Lin Ming) BZ 341 7447 7448Example Code and Data Size: These are the sizes for the OS-independent 7449acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7450debug version of the code includes the debug output trace mechanism and 7451has 7452a much larger code and data size. 7453 7454 Previous Release: 7455 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7456 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7457 Current Release: 7458 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 7459 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 7460 7461 74622) iASL Compiler/Disassembler: 7463 7464Implemented support to allow multiple files to be compiled/disassembled 7465in 7466a 7467single invocation. This includes command line wildcard support for both 7468the 7469Windows and Unix versions of the compiler. This feature simplifies the 7470disassembly and compilation of multiple ACPI tables in a single 7471directory. 7472 7473---------------------------------------- 747408 May 2007. Summary of changes for version 20070508: 7475 74761) ACPI CA Core Subsystem: 7477 7478Implemented a Microsoft compatibility design change for the handling of 7479the 7480Notify AML operator. Previously, notify handlers were dispatched and 7481executed completely asynchronously in a deferred thread. The new design 7482still executes the notify handlers in a different thread, but the 7483original 7484thread that executed the Notify() now waits at a synchronization point 7485for 7486the notify handler to complete. Some machines depend on a synchronous 7487Notify 7488operator in order to operate correctly. 7489 7490Implemented support to allow Package objects to be passed as method 7491arguments to the external AcpiEvaluateObject interface. Previously, this 7492would return the AE_NOT_IMPLEMENTED exception. This feature had not been 7493implemented since there were no reserved control methods that required it 7494until recently. 7495 7496Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs 7497that 7498contained invalid non-zero values in reserved fields could cause later 7499failures because these fields have meaning in later revisions of the 7500FADT. 7501For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The 7502fields 7503are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 7504 7505Fixed a problem where the Global Lock handle was not properly updated if 7506a 7507thread that acquired the Global Lock via executing AML code then 7508attempted 7509to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by 7510Joe 7511Liu. 7512 7513Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 7514could be corrupted if the interrupt being removed was at the head of the 7515list. Reported by Linn Crosetto. 7516 7517Example Code and Data Size: These are the sizes for the OS-independent 7518acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7519debug version of the code includes the debug output trace mechanism and 7520has 7521a much larger code and data size. 7522 7523 Previous Release: 7524 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7525 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7526 Current Release: 7527 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 7528 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 7529 7530---------------------------------------- 753120 March 2007. Summary of changes for version 20070320: 7532 75331) ACPI CA Core Subsystem: 7534 7535Implemented a change to the order of interpretation and evaluation of AML 7536operand objects within the AML interpreter. The interpreter now evaluates 7537operands in the order that they appear in the AML stream (and the 7538corresponding ASL code), instead of in the reverse order (after the 7539entire 7540operand list has been parsed). The previous behavior caused several 7541subtle 7542incompatibilities with the Microsoft AML interpreter as well as being 7543somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 7544 7545Implemented a change to the ACPI Global Lock support. All interfaces to 7546the 7547global lock now allow the same thread to acquire the lock multiple times. 7548This affects the AcpiAcquireGlobalLock external interface to the global 7549lock 7550as well as the internal use of the global lock to support AML fields -- a 7551control method that is holding the global lock can now simultaneously 7552access 7553AML fields that require global lock protection. Previously, in both 7554cases, 7555this would have resulted in an AE_ALREADY_ACQUIRED exception. The change 7556to 7557AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 7558Controller. There is no change to the behavior of the AML Acquire 7559operator, 7560as this can already be used to acquire a mutex multiple times by the same 7561thread. BZ 8066. With assistance from Alexey Starikovskiy. 7562 7563Fixed a problem where invalid objects could be referenced in the AML 7564Interpreter after error conditions. During operand evaluation, ensure 7565that 7566the internal "Return Object" field is cleared on error and only valid 7567pointers are stored there. Caused occasional access to deleted objects 7568that 7569resulted in "large reference count" warning messages. Valery Podrezov. 7570 7571Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur 7572on 7573deeply nested control method invocations. BZ 7873, local BZ 487. Valery 7574Podrezov. 7575 7576Fixed an internal problem with the handling of result objects on the 7577interpreter result stack. BZ 7872. Valery Podrezov. 7578 7579Removed obsolete code that handled the case where AML_NAME_OP is the 7580target 7581of a reference (Reference.Opcode). This code was no longer necessary. BZ 75827874. Valery Podrezov. 7583 7584Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This 7585was 7586a 7587remnant from the previously discontinued 16-bit support. 7588 7589Example Code and Data Size: These are the sizes for the OS-independent 7590acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7591debug version of the code includes the debug output trace mechanism and 7592has 7593a much larger code and data size. 7594 7595 Previous Release: 7596 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7597 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7598 Current Release: 7599 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7600 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 7601 7602---------------------------------------- 760326 January 2007. Summary of changes for version 20070126: 7604 76051) ACPI CA Core Subsystem: 7606 7607Added the 2007 copyright to all module headers and signons. This affects 7608virtually every file in the ACPICA core subsystem, the iASL compiler, and 7609the utilities. 7610 7611Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 7612during a table load. A bad pointer was passed in the case where the DSDT 7613is 7614overridden, causing a fault in this case. 7615 7616Example Code and Data Size: These are the sizes for the OS-independent 7617acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7618debug version of the code includes the debug output trace mechanism and 7619has 7620a much larger code and data size. 7621 7622 Previous Release: 7623 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7624 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7625 Current Release: 7626 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7627 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7628 7629---------------------------------------- 763015 December 2006. Summary of changes for version 20061215: 7631 76321) ACPI CA Core Subsystem: 7633 7634Support for 16-bit ACPICA has been completely removed since it is no 7635longer 7636necessary and it clutters the code. All 16-bit macros, types, and 7637conditional compiles have been removed, cleaning up and simplifying the 7638code 7639across the entire subsystem. DOS support is no longer needed since the 7640bootable Linux firmware kit is now available. 7641 7642The handler for the Global Lock is now removed during AcpiTerminate to 7643enable a clean subsystem restart, via the implementation of the 7644AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 7645HP) 7646 7647Implemented enhancements to the multithreading support within the 7648debugger 7649to enable improved multithreading debugging and evaluation of the 7650subsystem. 7651(Valery Podrezov) 7652 7653Debugger: Enhanced the Statistics/Memory command to emit the total 7654(maximum) 7655memory used during the execution, as well as the maximum memory consumed 7656by 7657each of the various object types. (Valery Podrezov) 7658 7659Example Code and Data Size: These are the sizes for the OS-independent 7660acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7661debug version of the code includes the debug output trace mechanism and 7662has 7663a much larger code and data size. 7664 7665 Previous Release: 7666 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7667 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7668 Current Release: 7669 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 7670 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 7671 7672 76732) iASL Compiler/Disassembler and Tools: 7674 7675AcpiExec: Implemented a new option (-m) to display full memory use 7676statistics upon subsystem/program termination. (Valery Podrezov) 7677 7678---------------------------------------- 767909 November 2006. Summary of changes for version 20061109: 7680 76811) ACPI CA Core Subsystem: 7682 7683Optimized the Load ASL operator in the case where the source operand is 7684an 7685operation region. Simply map the operation region memory, instead of 7686performing a bytewise read. (Region must be of type SystemMemory, see 7687below.) 7688 7689Fixed the Load ASL operator for the case where the source operand is a 7690region field. A buffer object is also allowed as the source operand. BZ 7691480 7692 7693Fixed a problem where the Load ASL operator allowed the source operand to 7694be 7695an operation region of any type. It is now restricted to regions of type 7696SystemMemory, as per the ACPI specification. BZ 481 7697 7698Additional cleanup and optimizations for the new Table Manager code. 7699 7700AcpiEnable will now fail if all of the required ACPI tables are not 7701loaded 7702(FADT, FACS, DSDT). BZ 477 7703 7704Added #pragma pack(8/4) to acobject.h to ensure that the structures in 7705this 7706header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 7707manually optimized to be aligned and will not work if it is byte-packed. 7708 7709Example Code and Data Size: These are the sizes for the OS-independent 7710acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7711debug version of the code includes the debug output trace mechanism and 7712has 7713a much larger code and data size. 7714 7715 Previous Release: 7716 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7717 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7718 Current Release: 7719 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 7720 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 7721 7722 77232) iASL Compiler/Disassembler and Tools: 7724 7725Fixed a problem where the presence of the _OSI predefined control method 7726within complex expressions could cause an internal compiler error. 7727 7728AcpiExec: Implemented full region support for multiple address spaces. 7729SpaceId is now part of the REGION object. BZ 429 7730 7731---------------------------------------- 773211 October 2006. Summary of changes for version 20061011: 7733 77341) ACPI CA Core Subsystem: 7735 7736Completed an AML interpreter performance enhancement for control method 7737execution. Previously a 2-pass parse/execution, control methods are now 7738completely parsed and executed in a single pass. This improves overall 7739interpreter performance by ~25%, reduces code size, and reduces CPU stack 7740use. (Valery Podrezov + interpreter changes in version 20051202 that 7741eliminated namespace loading during the pass one parse.) 7742 7743Implemented _CID support for PCI Root Bridge detection. If the _HID does 7744not 7745match the predefined PCI Root Bridge IDs, the _CID list (if present) is 7746now 7747obtained and also checked for an ID match. 7748 7749Implemented additional support for the PCI _ADR execution: upsearch until 7750a 7751device scope is found before executing _ADR. This allows PCI_Config 7752operation regions to be declared locally within control methods 7753underneath 7754PCI device objects. 7755 7756Fixed a problem with a possible race condition between threads executing 7757AcpiWalkNamespace and the AML interpreter. This condition was removed by 7758modifying AcpiWalkNamespace to (by default) ignore all temporary 7759namespace 7760entries created during any concurrent control method execution. An 7761additional namespace race condition is known to exist between 7762AcpiWalkNamespace and the Load/Unload ASL operators and is still under 7763investigation. 7764 7765Restructured the AML ParseLoop function, breaking it into several 7766subfunctions in order to reduce CPU stack use and improve 7767maintainability. 7768(Mikhail Kouzmich) 7769 7770AcpiGetHandle: Fix for parameter validation to detect invalid 7771combinations 7772of prefix handle and pathname. BZ 478 7773 7774Example Code and Data Size: These are the sizes for the OS-independent 7775acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7776debug version of the code includes the debug output trace mechanism and 7777has 7778a much larger code and data size. 7779 7780 Previous Release: 7781 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7782 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7783 Current Release: 7784 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 7785 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 7786 77872) iASL Compiler/Disassembler and Tools: 7788 7789Ported the -g option (get local ACPI tables) to the new ACPICA Table 7790Manager 7791to restore original behavior. 7792 7793---------------------------------------- 779427 September 2006. Summary of changes for version 20060927: 7795 77961) ACPI CA Core Subsystem: 7797 7798Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 7799These functions now use a spinlock for mutual exclusion and the interrupt 7800level indication flag is not needed. 7801 7802Fixed a problem with the Global Lock where the lock could appear to be 7803obtained before it is actually obtained. The global lock semaphore was 7804inadvertently created with one unit instead of zero units. (BZ 464) 7805Fiodor 7806Suietov. 7807 7808Fixed a possible memory leak and fault in AcpiExResolveObjectToValue 7809during 7810a read from a buffer or region field. (BZ 458) Fiodor Suietov. 7811 7812Example Code and Data Size: These are the sizes for the OS-independent 7813acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7814debug version of the code includes the debug output trace mechanism and 7815has 7816a much larger code and data size. 7817 7818 Previous Release: 7819 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7820 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7821 Current Release: 7822 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7823 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 7824 7825 78262) iASL Compiler/Disassembler and Tools: 7827 7828Fixed a compilation problem with the pre-defined Resource Descriptor 7829field 7830names where an "object does not exist" error could be incorrectly 7831generated 7832if the parent ResourceTemplate pathname places the template within a 7833different namespace scope than the current scope. (BZ 7212) 7834 7835Fixed a problem where the compiler could hang after syntax errors 7836detected 7837in an ElseIf construct. (BZ 453) 7838 7839Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 7840operator. An incorrect output filename was produced when this parameter 7841was 7842a null string (""). Now, the original input filename is used as the AML 7843output filename, with an ".aml" extension. 7844 7845Implemented a generic batch command mode for the AcpiExec utility 7846(execute 7847any AML debugger command) (Valery Podrezov). 7848 7849---------------------------------------- 785012 September 2006. Summary of changes for version 20060912: 7851 78521) ACPI CA Core Subsystem: 7853 7854Enhanced the implementation of the "serialized mode" of the interpreter 7855(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 7856specified, instead of creating a serialization semaphore per control 7857method, 7858the interpreter lock is simply no longer released before a blocking 7859operation during control method execution. This effectively makes the AML 7860Interpreter single-threaded. The overhead of a semaphore per-method is 7861eliminated. 7862 7863Fixed a regression where an error was no longer emitted if a control 7864method 7865attempts to create 2 objects of the same name. This once again returns 7866AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism 7867that 7868will dynamically serialize the control method to possible prevent future 7869errors. (BZ 440) 7870 7871Integrated a fix for a problem with PCI Express HID detection in the PCI 7872Config Space setup procedure. (BZ 7145) 7873 7874Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 7875AcpiHwInitialize function - the FADT registers are now validated when the 7876table is loaded. 7877 7878Added two new warnings during FADT verification - 1) if the FADT is 7879larger 7880than the largest known FADT version, and 2) if there is a mismatch 7881between 7882a 788332-bit block address and the 64-bit X counterpart (when both are non- 7884zero.) 7885 7886Example Code and Data Size: These are the sizes for the OS-independent 7887acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7888debug version of the code includes the debug output trace mechanism and 7889has 7890a much larger code and data size. 7891 7892 Previous Release: 7893 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7894 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7895 Current Release: 7896 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 7897 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 7898 7899 79002) iASL Compiler/Disassembler and Tools: 7901 7902Fixed a problem with the implementation of the Switch() operator where 7903the 7904temporary variable was declared too close to the actual Switch, instead 7905of 7906at method level. This could cause a problem if the Switch() operator is 7907within a while loop, causing an error on the second iteration. (BZ 460) 7908 7909Disassembler - fix for error emitted for unknown type for target of scope 7910operator. Now, ignore it and continue. 7911 7912Disassembly of an FADT now verifies the input FADT and reports any errors 7913found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 7914 7915Disassembly of raw data buffers with byte initialization data now 7916prefixes 7917each output line with the current buffer offset. 7918 7919Disassembly of ASF! table now includes all variable-length data fields at 7920the end of some of the subtables. 7921 7922The disassembler now emits a comment if a buffer appears to be a 7923ResourceTemplate, but cannot be disassembled as such because the EndTag 7924does 7925not appear at the very end of the buffer. 7926 7927AcpiExec - Added the "-t" command line option to enable the serialized 7928mode 7929of the AML interpreter. 7930 7931---------------------------------------- 793231 August 2006. Summary of changes for version 20060831: 7933 79341) ACPI CA Core Subsystem: 7935 7936Miscellaneous fixes for the Table Manager: 7937- Correctly initialize internal common FADT for all 64-bit "X" fields 7938- Fixed a couple table mapping issues during table load 7939- Fixed a couple alignment issues for IA64 7940- Initialize input array to zero in AcpiInitializeTables 7941- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 7942AcpiGetTableByIndex 7943 7944Change for GPE support: when a "wake" GPE is received, all wake GPEs are 7945now 7946immediately disabled to prevent the waking GPE from firing again and to 7947prevent other wake GPEs from interrupting the wake process. 7948 7949Added the AcpiGpeCount global that tracks the number of processed GPEs, 7950to 7951be used for debugging systems with a large number of ACPI interrupts. 7952 7953Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 7954both the ACPICA headers and the disassembler. 7955 7956Example Code and Data Size: These are the sizes for the OS-independent 7957acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 7958debug version of the code includes the debug output trace mechanism and 7959has 7960a much larger code and data size. 7961 7962 Previous Release: 7963 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 7964 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 7965 Current Release: 7966 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 7967 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 7968 7969 79702) iASL Compiler/Disassembler and Tools: 7971 7972Disassembler support for the DMAR ACPI table. 7973 7974---------------------------------------- 797523 August 2006. Summary of changes for version 20060823: 7976 79771) ACPI CA Core Subsystem: 7978 7979The Table Manager component has been completely redesigned and 7980reimplemented. The new design is much simpler, and reduces the overall 7981code 7982and data size of the kernel-resident ACPICA by approximately 5%. Also, it 7983is 7984now possible to obtain the ACPI tables very early during kernel 7985initialization, even before dynamic memory management is initialized. 7986(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 7987 7988Obsolete ACPICA interfaces: 7989 7990- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel 7991init 7992time). 7993- AcpiLoadTable: Not needed. 7994- AcpiUnloadTable: Not needed. 7995 7996New ACPICA interfaces: 7997 7998- AcpiInitializeTables: Must be called before the table manager can be 7999used. 8000- AcpiReallocateRootTable: Used to transfer the root table to dynamically 8001allocated memory after it becomes available. 8002- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI 8003tables 8004in the RSDT/XSDT. 8005 8006Other ACPICA changes: 8007 8008- AcpiGetTableHeader returns the actual mapped table header, not a copy. 8009Use 8010AcpiOsUnmapMemory to free this mapping. 8011- AcpiGetTable returns the actual mapped table. The mapping is managed 8012internally and must not be deleted by the caller. Use of this interface 8013causes no additional dynamic memory allocation. 8014- AcpiFindRootPointer: Support for physical addressing has been 8015eliminated, 8016it appeared to be unused. 8017- The interface to AcpiOsMapMemory has changed to be consistent with the 8018other allocation interfaces. 8019- The interface to AcpiOsGetRootPointer has changed to eliminate 8020unnecessary 8021parameters. 8022- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 802364- 8024bit platforms. Was previously 64 bits on all platforms. 8025- The interface to the ACPI Global Lock acquire/release macros have 8026changed 8027slightly since ACPICA no longer keeps a local copy of the FACS with a 8028constructed pointer to the actual global lock. 8029 8030Porting to the new table manager: 8031 8032- AcpiInitializeTables: Must be called once, and can be called anytime 8033during the OS initialization process. It allows the host to specify an 8034area 8035of memory to be used to store the internal version of the RSDT/XSDT (root 8036table). This allows the host to access ACPI tables before memory 8037management 8038is initialized and running. 8039- AcpiReallocateRootTable: Can be called after memory management is 8040running 8041to copy the root table to a dynamically allocated array, freeing up the 8042scratch memory specified in the call to AcpiInitializeTables. 8043- AcpiSubsystemInitialize: This existing interface is independent of the 8044Table Manager, and does not have to be called before the Table Manager 8045can 8046be used, it only must be called before the rest of ACPICA can be used. 8047- ACPI Tables: Some changes have been made to the names and structure of 8048the 8049actbl.h and actbl1.h header files and may require changes to existing 8050code. 8051For example, bitfields have been completely removed because of their lack 8052of 8053portability across C compilers. 8054- Update interfaces to the Global Lock acquire/release macros if local 8055versions are used. (see acwin.h) 8056 8057Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 8058 8059New files: tbfind.c 8060 8061Example Code and Data Size: These are the sizes for the OS-independent 8062acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8063debug version of the code includes the debug output trace mechanism and 8064has 8065a much larger code and data size. 8066 8067 Previous Release: 8068 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8069 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8070 Current Release: 8071 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 8072 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 8073 8074 80752) iASL Compiler/Disassembler and Tools: 8076 8077No changes for this release. 8078 8079---------------------------------------- 808021 July 2006. Summary of changes for version 20060721: 8081 80821) ACPI CA Core Subsystem: 8083 8084The full source code for the ASL test suite used to validate the iASL 8085compiler and the ACPICA core subsystem is being released with the ACPICA 8086source for the first time. The source is contained in a separate package 8087and 8088consists of over 1100 files that exercise all ASL/AML operators. The 8089package 8090should appear on the Intel/ACPI web site shortly. (Valery Podrezov, 8091Fiodor 8092Suietov) 8093 8094Completed a new design and implementation for support of the ACPI Global 8095Lock. On the OS side, the global lock is now treated as a standard AML 8096mutex. Previously, multiple OS threads could "acquire" the global lock 8097simultaneously. However, this could cause the BIOS to be starved out of 8098the 8099lock - especially in cases such as the Embedded Controller driver where 8100there is a tight coupling between the OS and the BIOS. 8101 8102Implemented an optimization for the ACPI Global Lock interrupt mechanism. 8103The Global Lock interrupt handler no longer queues the execution of a 8104separate thread to signal the global lock semaphore. Instead, the 8105semaphore 8106is signaled directly from the interrupt handler. 8107 8108Implemented support within the AML interpreter for package objects that 8109contain a larger AML length (package list length) than the package 8110element 8111count. In this case, the length of the package is truncated to match the 8112package element count. Some BIOS code apparently modifies the package 8113length 8114on the fly, and this change supports this behavior. Provides 8115compatibility 8116with the MS AML interpreter. (With assistance from Fiodor Suietov) 8117 8118Implemented a temporary fix for the BankValue parameter of a Bank Field 8119to 8120support all constant values, now including the Zero and One opcodes. 8121Evaluation of this parameter must eventually be converted to a full 8122TermArg 8123evaluation. A not-implemented error is now returned (temporarily) for 8124non- 8125constant values for this parameter. 8126 8127Fixed problem reports (Fiodor Suietov) integrated: 8128- Fix for premature object deletion after CopyObject on Operation Region 8129(BZ 8130350) 8131 8132Example Code and Data Size: These are the sizes for the OS-independent 8133acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8134debug version of the code includes the debug output trace mechanism and 8135has 8136a much larger code and data size. 8137 8138 Previous Release: 8139 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 8140 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 8141 Current Release: 8142 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8143 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8144 8145 81462) iASL Compiler/Disassembler and Tools: 8147 8148No changes for this release. 8149 8150---------------------------------------- 815107 July 2006. Summary of changes for version 20060707: 8152 81531) ACPI CA Core Subsystem: 8154 8155Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 8156that do not allow the initialization of address pointers within packed 8157structures - even though the hardware itself may support misaligned 8158transfers. Some of the debug data structures are packed by default to 8159minimize size. 8160 8161Added an error message for the case where AcpiOsGetThreadId() returns 8162zero. 8163A non-zero value is required by the core ACPICA code to ensure the proper 8164operation of AML mutexes and recursive control methods. 8165 8166The DSDT is now the only ACPI table that determines whether the AML 8167interpreter is in 32-bit or 64-bit mode. Not really a functional change, 8168but 8169the hooks for per-table 32/64 switching have been removed from the code. 8170A 8171clarification to the ACPI specification is forthcoming in ACPI 3.0B. 8172 8173Fixed a possible leak of an OwnerID in the error path of 8174AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 8175deletion to a single place in AcpiTbUninstallTable to correct possible 8176leaks 8177when using the AcpiTbDeleteTablesByType interface (with assistance from 8178Lance Ortiz.) 8179 8180Fixed a problem with Serialized control methods where the semaphore 8181associated with the method could be over-signaled after multiple method 8182invocations. 8183 8184Fixed two issues with the locking of the internal namespace data 8185structure. 8186Both the Unload() operator and AcpiUnloadTable interface now lock the 8187namespace during the namespace deletion associated with the table unload 8188(with assistance from Linn Crosetto.) 8189 8190Fixed problem reports (Valery Podrezov) integrated: 8191- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 8192 8193Fixed problem reports (Fiodor Suietov) integrated: 8194- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 8195- On Address Space handler deletion, needless deactivation call (BZ 374) 8196- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 8197375) 8198- Possible memory leak, Notify sub-objects of Processor, Power, 8199ThermalZone 8200(BZ 376) 8201- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 8202- Minimum Length of RSDT should be validated (BZ 379) 8203- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 8204Handler (BZ (380) 8205- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type 8206loaded 8207(BZ 381) 8208 8209Example Code and Data Size: These are the sizes for the OS-independent 8210acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8211debug version of the code includes the debug output trace mechanism and 8212has 8213a much larger code and data size. 8214 8215 Previous Release: 8216 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8217 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8218 Current Release: 8219 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 8220 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 8221 8222 82232) iASL Compiler/Disassembler and Tools: 8224 8225Fixed problem reports: 8226Compiler segfault when ASL contains a long (>1024) String declaration (BZ 8227436) 8228 8229---------------------------------------- 823023 June 2006. Summary of changes for version 20060623: 8231 82321) ACPI CA Core Subsystem: 8233 8234Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 8235allows the type to be customized to the host OS for improved efficiency 8236(since a spinlock is usually a very small object.) 8237 8238Implemented support for "ignored" bits in the ACPI registers. According 8239to 8240the ACPI specification, these bits should be preserved when writing the 8241registers via a read/modify/write cycle. There are 3 bits preserved in 8242this 8243manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 8244 8245Implemented the initial deployment of new OSL mutex interfaces. Since 8246some 8247host operating systems have separate mutex and semaphore objects, this 8248feature was requested. The base code now uses mutexes (and the new mutex 8249interfaces) wherever a binary semaphore was used previously. However, for 8250the current release, the mutex interfaces are defined as macros to map 8251them 8252to the existing semaphore interfaces. Therefore, no OSL changes are 8253required 8254at this time. (See acpiosxf.h) 8255 8256Fixed several problems with the support for the control method SyncLevel 8257parameter. The SyncLevel now works according to the ACPI specification 8258and 8259in concert with the Mutex SyncLevel parameter, since the current 8260SyncLevel 8261is a property of the executing thread. Mutual exclusion for control 8262methods 8263is now implemented with a mutex instead of a semaphore. 8264 8265Fixed three instances of the use of the C shift operator in the bitfield 8266support code (exfldio.c) to avoid the use of a shift value larger than 8267the 8268target data width. The behavior of C compilers is undefined in this case 8269and 8270can cause unpredictable results, and therefore the case must be detected 8271and 8272avoided. (Fiodor Suietov) 8273 8274Added an info message whenever an SSDT or OEM table is loaded dynamically 8275via the Load() or LoadTable() ASL operators. This should improve 8276debugging 8277capability since it will show exactly what tables have been loaded 8278(beyond 8279the tables present in the RSDT/XSDT.) 8280 8281Example Code and Data Size: These are the sizes for the OS-independent 8282acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8283debug version of the code includes the debug output trace mechanism and 8284has 8285a much larger code and data size. 8286 8287 Previous Release: 8288 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8289 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8290 Current Release: 8291 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 8292 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 8293 8294 82952) iASL Compiler/Disassembler and Tools: 8296 8297No changes for this release. 8298 8299---------------------------------------- 830008 June 2006. Summary of changes for version 20060608: 8301 83021) ACPI CA Core Subsystem: 8303 8304Converted the locking mutex used for the ACPI hardware to a spinlock. 8305This 8306change should eliminate all problems caused by attempting to acquire a 8307semaphore at interrupt level, and it means that all ACPICA external 8308interfaces that directly access the ACPI hardware can be safely called 8309from 8310interrupt level. OSL code that implements the semaphore interfaces should 8311be 8312able to eliminate any workarounds for being called at interrupt level. 8313 8314Fixed a regression introduced in 20060526 where the ACPI device 8315initialization could be prematurely aborted with an AE_NOT_FOUND if a 8316device 8317did not have an optional _INI method. 8318 8319Fixed an IndexField issue where a write to the Data Register should be 8320limited in size to the AccessSize (width) of the IndexField itself. (BZ 8321433, 8322Fiodor Suietov) 8323 8324Fixed problem reports (Valery Podrezov) integrated: 8325- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 8326 8327Fixed problem reports (Fiodor Suietov) integrated: 8328- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 8329 8330Removed four global mutexes that were obsolete and were no longer being 8331used. 8332 8333Example Code and Data Size: These are the sizes for the OS-independent 8334acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8335debug version of the code includes the debug output trace mechanism and 8336has 8337a much larger code and data size. 8338 8339 Previous Release: 8340 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8341 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8342 Current Release: 8343 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 8344 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 8345 8346 83472) iASL Compiler/Disassembler and Tools: 8348 8349Fixed a fault when using -g option (get tables from registry) on Windows 8350machines. 8351 8352Fixed problem reports integrated: 8353- Generate error if CreateField NumBits parameter is zero. (BZ 405) 8354- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 8355Suietov) 8356- Global table revision override (-r) is ignored (BZ 413) 8357 8358---------------------------------------- 835926 May 2006. Summary of changes for version 20060526: 8360 83611) ACPI CA Core Subsystem: 8362 8363Restructured, flattened, and simplified the internal interfaces for 8364namespace object evaluation - resulting in smaller code, less CPU stack 8365use, 8366and fewer interfaces. (With assistance from Mikhail Kouzmich) 8367 8368Fixed a problem with the CopyObject operator where the first parameter 8369was 8370not typed correctly for the parser, interpreter, compiler, and 8371disassembler. 8372Caused various errors and unexpected behavior. 8373 8374Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 8375produced incorrect results with some C compilers. Since the behavior of C 8376compilers when the shift value is larger than the datatype width is 8377apparently not well defined, the interpreter now detects this condition 8378and 8379simply returns zero as expected in all such cases. (BZ 395) 8380 8381Fixed problem reports (Valery Podrezov) integrated: 8382- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 8383- Allow interpreter to handle nested method declarations (BZ 5361) 8384 8385Fixed problem reports (Fiodor Suietov) integrated: 8386- AcpiTerminate doesn't free debug memory allocation list objects (BZ 8387355) 8388- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 8389356) 8390- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 8391- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 8392- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 8393- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 8394- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 8395- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 8396- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 8397365) 8398- Status of the Global Initialization Handler call not used (BZ 366) 8399- Incorrect object parameter to Global Initialization Handler (BZ 367) 8400 8401Example Code and Data Size: These are the sizes for the OS-independent 8402acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8403debug version of the code includes the debug output trace mechanism and 8404has 8405a much larger code and data size. 8406 8407 Previous Release: 8408 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8409 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8410 Current Release: 8411 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 8412 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 8413 8414 84152) iASL Compiler/Disassembler and Tools: 8416 8417Modified the parser to allow the names IO, DMA, and IRQ to be used as 8418namespace identifiers with no collision with existing resource descriptor 8419macro names. This provides compatibility with other ASL compilers and is 8420most useful for disassembly/recompilation of existing tables without 8421parse 8422errors. (With assistance from Thomas Renninger) 8423 8424Disassembler: fixed an incorrect disassembly problem with the 8425DataTableRegion and CopyObject operators. Fixed a possible fault during 8426disassembly of some Alias operators. 8427 8428---------------------------------------- 842912 May 2006. Summary of changes for version 20060512: 8430 84311) ACPI CA Core Subsystem: 8432 8433Replaced the AcpiOsQueueForExecution interface with a new interface named 8434AcpiOsExecute. The major difference is that the new interface does not 8435have 8436a Priority parameter, this appeared to be useless and has been replaced 8437by 8438a 8439Type parameter. The Type tells the host what type of execution is being 8440requested, such as global lock handler, notify handler, GPE handler, etc. 8441This allows the host to queue and execute the request as appropriate for 8442the 8443request type, possibly using different work queues and different 8444priorities 8445for the various request types. This enables fixes for multithreading 8446deadlock problems such as BZ #5534, and will require changes to all 8447existing 8448OS interface layers. (Alexey Starikovskiy and Bob Moore) 8449 8450Fixed a possible memory leak associated with the support for the so- 8451called 8452"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 8453Suietov) 8454 8455Fixed a problem with the Load() operator where a table load from an 8456operation region could overwrite an internal table buffer by up to 7 8457bytes 8458and cause alignment faults on IPF systems. (With assistance from Luming 8459Yu) 8460 8461Example Code and Data Size: These are the sizes for the OS-independent 8462acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8463debug version of the code includes the debug output trace mechanism and 8464has 8465a much larger code and data size. 8466 8467 Previous Release: 8468 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8469 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8470 Current Release: 8471 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 8472 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 8473 8474 8475 84762) iASL Compiler/Disassembler and Tools: 8477 8478Disassembler: Implemented support to cross reference the internal 8479namespace 8480and automatically generate ASL External() statements for symbols not 8481defined 8482within the current table being disassembled. This will simplify the 8483disassembly and recompilation of interdependent tables such as SSDTs 8484since 8485these statements will no longer have to be added manually. 8486 8487Disassembler: Implemented experimental support to automatically detect 8488invocations of external control methods and generate appropriate 8489External() 8490statements. This is problematic because the AML cannot be correctly 8491parsed 8492until the number of arguments for each control method is known. 8493Currently, 8494standalone method invocations and invocations as the source operand of a 8495Store() statement are supported. 8496 8497Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 8498LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 8499LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 8500more readable and likely closer to the original ASL source. 8501 8502---------------------------------------- 850321 April 2006. Summary of changes for version 20060421: 8504 85051) ACPI CA Core Subsystem: 8506 8507Removed a device initialization optimization introduced in 20051216 where 8508the _STA method was not run unless an _INI was also present for the same 8509device. This optimization could cause problems because it could allow 8510_INI 8511methods to be run within a not-present device subtree. (If a not-present 8512device had no _INI, _STA would not be run, the not-present status would 8513not 8514be discovered, and the children of the device would be incorrectly 8515traversed.) 8516 8517Implemented a new _STA optimization where namespace subtrees that do not 8518contain _INI are identified and ignored during device initialization. 8519Selectively running _STA can significantly improve boot time on large 8520machines (with assistance from Len Brown.) 8521 8522Implemented support for the device initialization case where the returned 8523_STA flags indicate a device not-present but functioning. In this case, 8524_INI 8525is not run, but the device children are examined for presence, as per the 8526ACPI specification. 8527 8528Implemented an additional change to the IndexField support in order to 8529conform to MS behavior. The value written to the Index Register is not 8530simply a byte offset, it is a byte offset in units of the access width of 8531the parent Index Field. (Fiodor Suietov) 8532 8533Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 8534interface is called during the creation of all AML operation regions, and 8535allows the host OS to exert control over what addresses it will allow the 8536AML code to access. Operation Regions whose addresses are disallowed will 8537cause a runtime exception when they are actually accessed (will not 8538affect 8539or abort table loading.) See oswinxf or osunixxf for an example 8540implementation. 8541 8542Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 8543interface allows the host OS to match the various "optional" 8544interface/behavior strings for the _OSI predefined control method as 8545appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 8546for an example implementation. 8547 8548Restructured and corrected various problems in the exception handling 8549code 8550paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 8551(with assistance from Takayoshi Kochi.) 8552 8553Modified the Linux source converter to ignore quoted string literals 8554while 8555converting identifiers from mixed to lower case. This will correct 8556problems 8557with the disassembler and other areas where such strings must not be 8558modified. 8559 8560The ACPI_FUNCTION_* macros no longer require quotes around the function 8561name. This allows the Linux source converter to convert the names, now 8562that 8563the converter ignores quoted strings. 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 8573 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8574 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8575 Current Release: 8576 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 8577 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 8578 8579 85802) iASL Compiler/Disassembler and Tools: 8581 8582Implemented 3 new warnings for iASL, and implemented multiple warning 8583levels 8584(w2 flag). 8585 85861) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is 8587not 8588WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 8589check for the possible timeout, a warning is issued. 8590 85912) Useless operators: If an ASL operator does not specify an optional 8592target 8593operand and it also does not use the function return value from the 8594operator, a warning is issued since the operator effectively does 8595nothing. 8596 85973) Unreferenced objects: If a namespace object is created, but never 8598referenced, a warning is issued. This is a warning level 2 since there 8599are 8600cases where this is ok, such as when a secondary table is loaded that 8601uses 8602the unreferenced objects. Even so, care is taken to only flag objects 8603that 8604don't look like they will ever be used. For example, the reserved methods 8605(starting with an underscore) are usually not referenced because it is 8606expected that the OS will invoke them. 8607 8608---------------------------------------- 860931 March 2006. Summary of changes for version 20060331: 8610 86111) ACPI CA Core Subsystem: 8612 8613Implemented header file support for the following additional ACPI tables: 8614ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this 8615support, 8616all current and known ACPI tables are now defined in the ACPICA headers 8617and 8618are available for use by device drivers and other software. 8619 8620Implemented support to allow tables that contain ACPI names with invalid 8621characters to be loaded. Previously, this would cause the table load to 8622fail, but since there are several known cases of such tables on existing 8623machines, this change was made to enable ACPI support for them. Also, 8624this 8625matches the behavior of the Microsoft ACPI implementation. 8626 8627Fixed a couple regressions introduced during the memory optimization in 8628the 862920060317 release. The namespace node definition required additional 8630reorganization and an internal datatype that had been changed to 8-bit 8631was 8632restored to 32-bit. (Valery Podrezov) 8633 8634Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 8635could be passed through to AcpiOsReleaseObject which is unexpected. Such 8636null pointers are now trapped and ignored, matching the behavior of the 8637previous implementation before the deployment of AcpiOsReleaseObject. 8638(Valery Podrezov, Fiodor Suietov) 8639 8640Fixed a memory mapping leak during the deletion of a SystemMemory 8641operation 8642region where a cached memory mapping was not deleted. This became a 8643noticeable problem for operation regions that are defined within 8644frequently 8645used control methods. (Dana Meyers) 8646 8647Reorganized the ACPI table header files into two main files: one for the 8648ACPI tables consumed by the ACPICA core, and another for the 8649miscellaneous 8650ACPI tables that are consumed by the drivers and other software. The 8651various 8652FADT definitions were merged into one common section and three different 8653tables (ACPI 1.0, 1.0+, and 2.0) 8654 8655Example Code and Data Size: These are the sizes for the OS-independent 8656acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 8657debug version of the code includes the debug output trace mechanism and 8658has 8659a much larger code and data size. 8660 8661 Previous Release: 8662 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8663 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8664 Current Release: 8665 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 8666 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 8667 8668 86692) iASL Compiler/Disassembler and Tools: 8670 8671Disassembler: Implemented support to decode and format all non-AML ACPI 8672tables (tables other than DSDTs and SSDTs.) This includes the new tables 8673added to the ACPICA headers, therefore all current and known ACPI tables 8674are 8675supported. 8676 8677Disassembler: The change to allow ACPI names with invalid characters also 8678enables the disassembly of such tables. Invalid characters within names 8679are 8680changed to '*' to make the name printable; the iASL compiler will still 8681generate an error for such names, however, since this is an invalid ACPI 8682character. 8683 8684Implemented an option for AcpiXtract (-a) to extract all tables found in 8685the 8686input file. The default invocation extracts only the DSDTs and SSDTs. 8687 8688Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 8689makefile for the AcpiXtract utility. 8690 8691---------------------------------------- 869217 March 2006. Summary of changes for version 20060317: 8693 86941) ACPI CA Core Subsystem: 8695 8696Implemented the use of a cache object for all internal namespace nodes. 8697Since there are about 1000 static nodes in a typical system, this will 8698decrease memory use for cache implementations that minimize per- 8699allocation 8700overhead (such as a slab allocator.) 8701 8702Removed the reference count mechanism for internal namespace nodes, since 8703it 8704was deemed unnecessary. This reduces the size of each namespace node by 8705about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit 8706case, 8707and 32 bytes for the 64-bit case. 8708 8709Optimized several internal data structures to reduce object size on 64- 8710bit 8711platforms by packing data within the 64-bit alignment. This includes the 8712frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 8713instances corresponding to the namespace objects. 8714 8715Added two new strings for the predefined _OSI method: "Windows 2001.1 8716SP1" 8717and "Windows 2006". 8718 8719Split the allocation tracking mechanism out to a separate file, from 8720utalloc.c to uttrack.c. This mechanism appears to be only useful for 8721application-level code. Kernels may wish to not include uttrack.c in 8722distributions. 8723 8724Removed all remnants of the obsolete ACPI_REPORT_* macros and the 8725associated 8726code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 8727macros.) 8728 8729Code and Data Size: These are the sizes for the acpica.lib produced by 8730the 8731Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8732ACPI 8733driver or OSPM code. The debug version of the code includes the debug 8734output 8735trace mechanism and has a much larger code and data size. Note that these 8736values will vary depending on the efficiency of the compiler and the 8737compiler options used during generation. 8738 8739 Previous Release: 8740 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8741 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8742 Current Release: 8743 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 8744 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 8745 8746 87472) iASL Compiler/Disassembler and Tools: 8748 8749Implemented an ANSI C version of the acpixtract utility. This version 8750will 8751automatically extract the DSDT and all SSDTs from the input acpidump text 8752file and dump the binary output to separate files. It can also display a 8753summary of the input file including the headers for each table found and 8754will extract any single ACPI table, with any signature. (See 8755source/tools/acpixtract) 8756 8757---------------------------------------- 875810 March 2006. Summary of changes for version 20060310: 8759 87601) ACPI CA Core Subsystem: 8761 8762Tagged all external interfaces to the subsystem with the new 8763ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to 8764assist 8765kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 8766macro. The default definition is NULL. 8767 8768Added the ACPI_THREAD_ID type for the return value from 8769AcpiOsGetThreadId. 8770This allows the host to define this as necessary to simplify kernel 8771integration. The default definition is ACPI_NATIVE_UINT. 8772 8773Fixed two interpreter problems related to error processing, the deletion 8774of 8775objects, and placing invalid pointers onto the internal operator result 8776stack. BZ 6028, 6151 (Valery Podrezov) 8777 8778Increased the reference count threshold where a warning is emitted for 8779large 8780reference counts in order to eliminate unnecessary warnings on systems 8781with 8782large namespaces (especially 64-bit.) Increased the value from 0x400 to 87830x800. 8784 8785Due to universal disagreement as to the meaning of the 'c' in the 8786calloc() 8787function, the ACPI_MEM_CALLOCATE macro has been renamed to 8788ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 8789ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 8790ACPI_FREE. 8791 8792Code and Data Size: These are the sizes for the acpica.lib produced by 8793the 8794Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8795ACPI 8796driver or OSPM code. The debug version of the code includes the debug 8797output 8798trace mechanism and has a much larger code and data size. Note that these 8799values will vary depending on the efficiency of the compiler and the 8800compiler options used during generation. 8801 8802 Previous Release: 8803 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8804 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8805 Current Release: 8806 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8807 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 8808 8809 88102) iASL Compiler/Disassembler: 8811 8812Disassembler: implemented support for symbolic resource descriptor 8813references. If a CreateXxxxField operator references a fixed offset 8814within 8815a 8816resource descriptor, a name is assigned to the descriptor and the offset 8817is 8818translated to the appropriate resource tag and pathname. The addition of 8819this support brings the disassembled code very close to the original ASL 8820source code and helps eliminate run-time errors when the disassembled 8821code 8822is modified (and recompiled) in such a way as to invalidate the original 8823fixed offsets. 8824 8825Implemented support for a Descriptor Name as the last parameter to the 8826ASL 8827Register() macro. This parameter was inadvertently left out of the ACPI 8828specification, and will be added for ACPI 3.0b. 8829 8830Fixed a problem where the use of the "_OSI" string (versus the full path 8831"\_OSI") caused an internal compiler error. ("No back ptr to op") 8832 8833Fixed a problem with the error message that occurs when an invalid string 8834is 8835used for a _HID object (such as one with an embedded asterisk: 8836"*PNP010A".) 8837The correct message is now displayed. 8838 8839---------------------------------------- 884017 February 2006. Summary of changes for version 20060217: 8841 88421) ACPI CA Core Subsystem: 8843 8844Implemented a change to the IndexField support to match the behavior of 8845the 8846Microsoft AML interpreter. The value written to the Index register is now 8847a 8848byte offset, no longer an index based upon the width of the Data 8849register. 8850This should fix IndexField problems seen on some machines where the Data 8851register is not exactly one byte wide. The ACPI specification will be 8852clarified on this point. 8853 8854Fixed a problem where several resource descriptor types could overrun the 8855internal descriptor buffer due to size miscalculation: VendorShort, 8856VendorLong, and Interrupt. This was noticed on IA64 machines, but could 8857affect all platforms. 8858 8859Fixed a problem where individual resource descriptors were misaligned 8860within 8861the internal buffer, causing alignment faults on IA64 platforms. 8862 8863Code and Data Size: These are the sizes for the acpica.lib produced by 8864the 8865Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any 8866ACPI 8867driver or OSPM code. The debug version of the code includes the debug 8868output 8869trace mechanism and has a much larger code and data size. Note that these 8870values will vary depending on the efficiency of the compiler and the 8871compiler options used during generation. 8872 8873 Previous Release: 8874 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8875 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8876 Current Release: 8877 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 8878 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 8879 8880 88812) iASL Compiler/Disassembler: 8882 8883Implemented support for new reserved names: _WDG and _WED are Microsoft 8884extensions for Windows Instrumentation Management, _TDL is a new ACPI- 8885defined method (Throttling Depth Limit.) 8886 8887Fixed a problem where a zero-length VendorShort or VendorLong resource 8888descriptor was incorrectly emitted as a descriptor of length one. 8889 8890---------------------------------------- 889110 February 2006. Summary of changes for version 20060210: 8892 88931) ACPI CA Core Subsystem: 8894 8895Removed a couple of extraneous ACPI_ERROR messages that appeared during 8896normal execution. These became apparent after the conversion from 8897ACPI_DEBUG_PRINT. 8898 8899Fixed a problem where the CreateField operator could hang if the BitIndex 8900or 8901NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 8902 8903Fixed a problem where a DeRefOf operation on a buffer object incorrectly 8904failed with an exception. This also fixes a couple of related RefOf and 8905DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 8906 8907Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead 8908of 8909AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, 8910BZ 89115480) 8912 8913Implemented a memory cleanup at the end of the execution of each 8914iteration 8915of an AML While() loop, preventing the accumulation of outstanding 8916objects. 8917(Valery Podrezov, BZ 5427) 8918 8919Eliminated a chunk of duplicate code in the object resolution code. 8920(Valery 8921Podrezov, BZ 5336) 8922 8923Fixed several warnings during the 64-bit code generation. 8924 8925The AcpiSrc source code conversion tool now inserts one line of 8926whitespace 8927after an if() statement that is followed immediately by a comment, 8928improving 8929readability of the Linux code. 8930 8931Code and Data Size: The current and previous library sizes for the core 8932subsystem are shown below. These are the code and data sizes for the 8933acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8934These 8935values do not include any ACPI driver or OSPM code. The debug version of 8936the 8937code includes the debug output trace mechanism and has a much larger code 8938and data size. Note that these values will vary depending on the 8939efficiency 8940of the compiler and the compiler options used during generation. 8941 8942 Previous Release: 8943 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 8944 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 8945 Current Release: 8946 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 8947 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 8948 8949 89502) iASL Compiler/Disassembler: 8951 8952Fixed a problem with the disassembly of a BankField operator with a 8953complex 8954expression for the BankValue parameter. 8955 8956---------------------------------------- 895727 January 2006. Summary of changes for version 20060127: 8958 89591) ACPI CA Core Subsystem: 8960 8961Implemented support in the Resource Manager to allow unresolved 8962namestring 8963references within resource package objects for the _PRT method. This 8964support 8965is in addition to the previously implemented unresolved reference support 8966within the AML parser. If the interpreter slack mode is enabled, these 8967unresolved references will be passed through to the caller as a NULL 8968package 8969entry. 8970 8971Implemented and deployed new macros and functions for error and warning 8972messages across the subsystem. These macros are simpler and generate less 8973code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 8974ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 8975macros remain defined to allow ACPI drivers time to migrate to the new 8976macros. 8977 8978Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of 8979the 8980Acquire/Release Lock OSL interfaces. 8981 8982Fixed a problem where Alias ASL operators are sometimes not correctly 8983resolved, in both the interpreter and the iASL compiler. 8984 8985Fixed several problems with the implementation of the 8986ConcatenateResTemplate 8987ASL operator. As per the ACPI specification, zero length buffers are now 8988treated as a single EndTag. One-length buffers always cause a fatal 8989exception. Non-zero length buffers that do not end with a full 2-byte 8990EndTag 8991cause a fatal exception. 8992 8993Fixed a possible structure overwrite in the AcpiGetObjectInfo external 8994interface. (With assistance from Thomas Renninger) 8995 8996Code and Data Size: The current and previous library sizes for the core 8997subsystem are shown below. These are the code and data sizes for the 8998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 8999These 9000values do not include any ACPI driver or OSPM code. The debug version of 9001the 9002code includes the debug output trace mechanism and has a much larger code 9003and data size. Note that these values will vary depending on the 9004efficiency 9005of the compiler and the compiler options used during generation. 9006 9007 Previous Release: 9008 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9009 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9010 Current Release: 9011 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 9012 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 9013 9014 90152) iASL Compiler/Disassembler: 9016 9017Fixed an internal error that was generated for any forward references to 9018ASL 9019Alias objects. 9020 9021---------------------------------------- 902213 January 2006. Summary of changes for version 20060113: 9023 90241) ACPI CA Core Subsystem: 9025 9026Added 2006 copyright to all module headers and signons. This affects 9027virtually every file in the ACPICA core subsystem, iASL compiler, and the 9028utilities. 9029 9030Enhanced the ACPICA error reporting in order to simplify user migration 9031to 9032the non-debug version of ACPICA. Replaced all instances of the 9033ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN 9034debug 9035levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 9036respectively. This preserves all error and warning messages in the non- 9037debug 9038version of the ACPICA code (this has been referred to as the "debug lite" 9039option.) Over 200 cases were converted to create a total of over 380 9040error/warning messages across the ACPICA code. This increases the code 9041and 9042data size of the default non-debug version of the code somewhat (about 904313K), 9044but all error/warning reporting may be disabled if desired (and code 9045eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 9046configuration option. The size of the debug version of ACPICA remains 9047about 9048the same. 9049 9050Fixed a memory leak within the AML Debugger "Set" command. One object was 9051not properly deleted for every successful invocation of the command. 9052 9053Code and Data Size: The current and previous library sizes for the core 9054subsystem are shown below. These are the code and data sizes for the 9055acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9056These 9057values do not include any ACPI driver or OSPM code. The debug version of 9058the 9059code includes the debug output trace mechanism and has a much larger code 9060and data size. Note that these values will vary depending on the 9061efficiency 9062of the compiler and the compiler options used during generation. 9063 9064 Previous Release: 9065 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9066 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9067 Current Release: 9068 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 9069 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 9070 9071 90722) iASL Compiler/Disassembler: 9073 9074The compiler now officially supports the ACPI 3.0a specification that was 9075released on December 30, 2005. (Specification is available at 9076www.acpi.info) 9077 9078---------------------------------------- 907916 December 2005. Summary of changes for version 20051216: 9080 90811) ACPI CA Core Subsystem: 9082 9083Implemented optional support to allow unresolved names within ASL Package 9084objects. A null object is inserted in the package when a named reference 9085cannot be located in the current namespace. Enabled via the interpreter 9086slack flag, this should eliminate AE_NOT_FOUND exceptions seen on 9087machines 9088that contain such code. 9089 9090Implemented an optimization to the initialization sequence that can 9091improve 9092boot time. During ACPI device initialization, the _STA method is now run 9093if 9094and only if the _INI method exists. The _STA method is used to determine 9095if 9096the device is present; An _INI can only be run if _STA returns present, 9097but 9098it is a waste of time to run the _STA method if the _INI does not exist. 9099(Prototype and assistance from Dong Wei) 9100 9101Implemented use of the C99 uintptr_t for the pointer casting macros if it 9102is 9103available in the current compiler. Otherwise, the default (void *) cast 9104is 9105used as before. 9106 9107Fixed some possible memory leaks found within the execution path of the 9108Break, Continue, If, and CreateField operators. (Valery Podrezov) 9109 9110Fixed a problem introduced in the 20051202 release where an exception is 9111generated during method execution if a control method attempts to declare 9112another method. 9113 9114Moved resource descriptor string constants that are used by both the AML 9115disassembler and AML debugger to the common utilities directory so that 9116these components are independent. 9117 9118Implemented support in the AcpiExec utility (-e switch) to globally 9119ignore 9120exceptions during control method execution (method is not aborted.) 9121 9122Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 9123generation. 9124 9125Code and Data Size: The current and previous library sizes for the core 9126subsystem are shown below. These are the code and data sizes for the 9127acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9128These 9129values do not include any ACPI driver or OSPM code. The debug version of 9130the 9131code includes the debug output trace mechanism and has a much larger code 9132and data size. Note that these values will vary depending on the 9133efficiency 9134of the compiler and the compiler options used during generation. 9135 9136 Previous Release: 9137 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9138 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9139 Current Release: 9140 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 9141 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 9142 9143 91442) iASL Compiler/Disassembler: 9145 9146Fixed a problem where a CPU stack overflow fault could occur if a 9147recursive 9148method call was made from within a Return statement. 9149 9150---------------------------------------- 915102 December 2005. Summary of changes for version 20051202: 9152 91531) ACPI CA Core Subsystem: 9154 9155Modified the parsing of control methods to no longer create namespace 9156objects during the first pass of the parse. Objects are now created only 9157during the execute phase, at the moment the namespace creation operator 9158is 9159encountered in the AML (Name, OperationRegion, CreateByteField, etc.) 9160This 9161should eliminate ALREADY_EXISTS exceptions seen on some machines where 9162reentrant control methods are protected by an AML mutex. The mutex will 9163now 9164correctly block multiple threads from attempting to create the same 9165object 9166more than once. 9167 9168Increased the number of available Owner Ids for namespace object tracking 9169from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen 9170on 9171some machines with a large number of ACPI tables (either static or 9172dynamic). 9173 9174Fixed a problem with the AcpiExec utility where a fault could occur when 9175the 9176-b switch (batch mode) is used. 9177 9178Enhanced the namespace dump routine to output the owner ID for each 9179namespace object. 9180 9181Code and Data Size: The current and previous library sizes for the core 9182subsystem are shown below. These are the code and data sizes for the 9183acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9184These 9185values do not include any ACPI driver or OSPM code. The debug version of 9186the 9187code includes the debug output trace mechanism and has a much larger code 9188and data size. Note that these values will vary depending on the 9189efficiency 9190of the compiler and the compiler options used during generation. 9191 9192 Previous Release: 9193 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9194 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9195 Current Release: 9196 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9197 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 9198 9199 92002) iASL Compiler/Disassembler: 9201 9202Fixed a parse error during compilation of certain Switch/Case constructs. 9203To 9204simplify the parse, the grammar now allows for multiple Default 9205statements 9206and this error is now detected and flagged during the analysis phase. 9207 9208Disassembler: The disassembly now includes the contents of the original 9209table header within a comment at the start of the file. This includes the 9210name and version of the original ASL compiler. 9211 9212---------------------------------------- 921317 November 2005. Summary of changes for version 20051117: 9214 92151) ACPI CA Core Subsystem: 9216 9217Fixed a problem in the AML parser where the method thread count could be 9218decremented below zero if any errors occurred during the method parse 9219phase. 9220This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some 9221machines. 9222This also fixed a related regression with the mechanism that detects and 9223corrects methods that cannot properly handle reentrancy (related to the 9224deployment of the new OwnerId mechanism.) 9225 9226Eliminated the pre-parsing of control methods (to detect errors) during 9227table load. Related to the problem above, this was causing unwind issues 9228if 9229any errors occurred during the parse, and it seemed to be overkill. A 9230table 9231load should not be aborted if there are problems with any single control 9232method, thus rendering this feature rather pointless. 9233 9234Fixed a problem with the new table-driven resource manager where an 9235internal 9236buffer overflow could occur for small resource templates. 9237 9238Implemented a new external interface, AcpiGetVendorResource. This 9239interface 9240will find and return a vendor-defined resource descriptor within a _CRS 9241or 9242_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn 9243Helgaas. 9244 9245Removed the length limit (200) on string objects as per the upcoming ACPI 92463.0A specification. This affects the following areas of the interpreter: 92471) 9248any implicit conversion of a Buffer to a String, 2) a String object 9249result 9250of the ASL Concatentate operator, 3) the String object result of the ASL 9251ToString operator. 9252 9253Fixed a problem in the Windows OS interface layer (OSL) where a 9254WAIT_FOREVER 9255on a semaphore object would incorrectly timeout. This allows the 9256multithreading features of the AcpiExec utility to work properly under 9257Windows. 9258 9259Updated the Linux makefiles for the iASL compiler and AcpiExec to include 9260the recently added file named "utresrc.c". 9261 9262Code and Data Size: The current and previous library sizes for the core 9263subsystem are shown below. These are the code and data sizes for the 9264acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9265These 9266values do not include any ACPI driver or OSPM code. The debug version of 9267the 9268code includes the debug output trace mechanism and has a much larger code 9269and data size. Note that these values will vary depending on the 9270efficiency 9271of the compiler and the compiler options used during generation. 9272 9273 Previous Release: 9274 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9275 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9276 Current Release: 9277 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 9278 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9279 9280 92812) iASL Compiler/Disassembler: 9282 9283Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 9284specification. For the iASL compiler, this means that string literals 9285within 9286the source ASL can be of any length. 9287 9288Enhanced the listing output to dump the AML code for resource descriptors 9289immediately after the ASL code for each descriptor, instead of in a block 9290at 9291the end of the entire resource template. 9292 9293Enhanced the compiler debug output to dump the entire original parse tree 9294constructed during the parse phase, before any transforms are applied to 9295the 9296tree. The transformed tree is dumped also. 9297 9298---------------------------------------- 929902 November 2005. Summary of changes for version 20051102: 9300 93011) ACPI CA Core Subsystem: 9302 9303Modified the subsystem initialization sequence to improve GPE support. 9304The 9305GPE initialization has been split into two parts in order to defer 9306execution 9307of the _PRW methods (Power Resources for Wake) until after the hardware 9308is 9309fully initialized and the SCI handler is installed. This allows the _PRW 9310methods to access fields protected by the Global Lock. This will fix 9311systems 9312where a NO_GLOBAL_LOCK exception has been seen during initialization. 9313 9314Converted the ACPI internal object disassemble and display code within 9315the 9316AML debugger to fully table-driven operation, reducing code size and 9317increasing maintainability. 9318 9319Fixed a regression with the ConcatenateResTemplate() ASL operator 9320introduced 9321in the 20051021 release. 9322 9323Implemented support for "local" internal ACPI object types within the 9324debugger "Object" command and the AcpiWalkNamespace external interfaces. 9325These local types include RegionFields, BankFields, IndexFields, Alias, 9326and 9327reference objects. 9328 9329Moved common AML resource handling code into a new file, "utresrc.c". 9330This 9331code is shared by both the Resource Manager and the AML Debugger. 9332 9333Code and Data Size: The current and previous library sizes for the core 9334subsystem are shown below. These are the code and data sizes for the 9335acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9336These 9337values do not include any ACPI driver or OSPM code. The debug version of 9338the 9339code includes the debug output trace mechanism and has a much larger code 9340and data size. Note that these values will vary depending on the 9341efficiency 9342of the compiler and the compiler options used during generation. 9343 9344 Previous Release: 9345 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9346 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9347 Current Release: 9348 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 9349 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 9350 9351 93522) iASL Compiler/Disassembler: 9353 9354Fixed a problem with very large initializer lists (more than 4000 9355elements) 9356for both Buffer and Package objects where the parse stack could overflow. 9357 9358Enhanced the pre-compile source code scan for non-ASCII characters to 9359ignore 9360characters within comment fields. The scan is now always performed and is 9361no 9362longer optional, detecting invalid characters within a source file 9363immediately rather than during the parse phase or later. 9364 9365Enhanced the ASL grammar definition to force early reductions on all 9366list- 9367style grammar elements so that the overall parse stack usage is greatly 9368reduced. This should improve performance and reduce the possibility of 9369parse 9370stack overflow. 9371 9372Eliminated all reduce/reduce conflicts in the iASL parser generation. 9373Also, 9374with the addition of a %expected statement, the compiler generates from 9375source with no warnings. 9376 9377Fixed a possible segment fault in the disassembler if the input filename 9378does not contain a "dot" extension (Thomas Renninger). 9379 9380---------------------------------------- 938121 October 2005. Summary of changes for version 20051021: 9382 93831) ACPI CA Core Subsystem: 9384 9385Implemented support for the EM64T and other x86-64 processors. This 9386essentially entails recognizing that these processors support non-aligned 9387memory transfers. Previously, all 64-bit processors were assumed to lack 9388hardware support for non-aligned transfers. 9389 9390Completed conversion of the Resource Manager to nearly full table-driven 9391operation. Specifically, the resource conversion code (convert AML to 9392internal format and the reverse) and the debug code to dump internal 9393resource descriptors are fully table-driven, reducing code and data size 9394and 9395improving maintainability. 9396 9397The OSL interfaces for Acquire and Release Lock now use a 64-bit flag 9398word 9399on 64-bit processors instead of a fixed 32-bit word. (With assistance 9400from 9401Alexey Starikovskiy) 9402 9403Implemented support within the resource conversion code for the Type- 9404Specific byte within the various ACPI 3.0 *WordSpace macros. 9405 9406Fixed some issues within the resource conversion code for the type- 9407specific 9408flags for both Memory and I/O address resource descriptors. For Memory, 9409implemented support for the MTP and TTP flags. For I/O, split the TRS and 9410TTP flags into two separate fields. 9411 9412Code and Data Size: The current and previous library sizes for the core 9413subsystem are shown below. These are the code and data sizes for the 9414acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9415These 9416values do not include any ACPI driver or OSPM code. The debug version of 9417the 9418code includes the debug output trace mechanism and has a much larger code 9419and data size. Note that these values will vary depending on the 9420efficiency 9421of the compiler and the compiler options used during generation. 9422 9423 Previous Release: 9424 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9425 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9426 Current Release: 9427 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 9428 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 9429 9430 9431 94322) iASL Compiler/Disassembler: 9433 9434Relaxed a compiler restriction that disallowed a ResourceIndex byte if 9435the 9436corresponding ResourceSource string was not also present in a resource 9437descriptor declaration. This restriction caused problems with existing 9438AML/ASL code that includes the Index byte without the string. When such 9439AML 9440was disassembled, it could not be compiled without modification. Further, 9441the modified code created a resource template with a different size than 9442the 9443original, breaking code that used fixed offsets into the resource 9444template 9445buffer. 9446 9447Removed a recent feature of the disassembler to ignore a lone 9448ResourceIndex 9449byte. This byte is now emitted if present so that the exact AML can be 9450reproduced when the disassembled code is recompiled. 9451 9452Improved comments and text alignment for the resource descriptor code 9453emitted by the disassembler. 9454 9455Implemented disassembler support for the ACPI 3.0 AccessSize field within 9456a 9457Register() resource descriptor. 9458 9459---------------------------------------- 946030 September 2005. Summary of changes for version 20050930: 9461 94621) ACPI CA Core Subsystem: 9463 9464Completed a major overhaul of the Resource Manager code - specifically, 9465optimizations in the area of the AML/internal resource conversion code. 9466The 9467code has been optimized to simplify and eliminate duplicated code, CPU 9468stack 9469use has been decreased by optimizing function parameters and local 9470variables, and naming conventions across the manager have been 9471standardized 9472for clarity and ease of maintenance (this includes function, parameter, 9473variable, and struct/typedef names.) The update may force changes in some 9474driver code, depending on how resources are handled by the host OS. 9475 9476All Resource Manager dispatch and information tables have been moved to a 9477single location for clarity and ease of maintenance. One new file was 9478created, named "rsinfo.c". 9479 9480The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 9481guarantee that the argument is not evaluated twice, making them less 9482prone 9483to macro side-effects. However, since there exists the possibility of 9484additional stack use if a particular compiler cannot optimize them (such 9485as 9486in the debug generation case), the original macros are optionally 9487available. 9488Note that some invocations of the return_VALUE macro may now cause size 9489mismatch warnings; the return_UINT8 and return_UINT32 macros are provided 9490to 9491eliminate these. (From Randy Dunlap) 9492 9493Implemented a new mechanism to enable debug tracing for individual 9494control 9495methods. A new external interface, AcpiDebugTrace, is provided to enable 9496this mechanism. The intent is to allow the host OS to easily enable and 9497disable tracing for problematic control methods. This interface can be 9498easily exposed to a user or debugger interface if desired. See the file 9499psxface.c for details. 9500 9501AcpiUtCallocate will now return a valid pointer if a length of zero is 9502specified - a length of one is used and a warning is issued. This matches 9503the behavior of AcpiUtAllocate. 9504 9505Code and Data Size: The current and previous library sizes for the core 9506subsystem are shown below. These are the code and data sizes for the 9507acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9508These 9509values do not include any ACPI driver or OSPM code. The debug version of 9510the 9511code includes the debug output trace mechanism and has a much larger code 9512and data size. Note that these values will vary depending on the 9513efficiency 9514of the compiler and the compiler options used during generation. 9515 9516 Previous Release: 9517 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9518 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9519 Current Release: 9520 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 9521 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 9522 9523 95242) iASL Compiler/Disassembler: 9525 9526A remark is issued if the effective compile-time length of a package or 9527buffer is zero. Previously, this was a warning. 9528 9529---------------------------------------- 953016 September 2005. Summary of changes for version 20050916: 9531 95321) ACPI CA Core Subsystem: 9533 9534Fixed a problem within the Resource Manager where support for the Generic 9535Register descriptor was not fully implemented. This descriptor is now 9536fully 9537recognized, parsed, disassembled, and displayed. 9538 9539Completely restructured the Resource Manager code to utilize table-driven 9540dispatch and lookup, eliminating many of the large switch() statements. 9541This 9542reduces overall subsystem code size and code complexity. Affects the 9543resource parsing and construction, disassembly, and debug dump output. 9544 9545Cleaned up and restructured the debug dump output for all resource 9546descriptors. Improved readability of the output and reduced code size. 9547 9548Fixed a problem where changes to internal data structures caused the 9549optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 9550 9551Code and Data Size: The current and previous library sizes for the core 9552subsystem are shown below. These are the code and data sizes for the 9553acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. 9554These 9555values do not include any ACPI driver or OSPM code. The debug version of 9556the 9557code includes the debug output trace mechanism and has a much larger code 9558and data size. Note that these values will vary depending on the 9559efficiency 9560of the compiler and the compiler options used during generation. 9561 9562 Previous Release: 9563 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9564 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9565 Current Release: 9566 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 9567 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 9568 9569 95702) iASL Compiler/Disassembler: 9571 9572Updated the disassembler to automatically insert an EndDependentFn() 9573macro 9574into the ASL stream if this macro is missing in the original AML code, 9575simplifying compilation of the resulting ASL module. 9576 9577Fixed a problem in the disassembler where a disassembled ResourceSource 9578string (within a large resource descriptor) was not surrounded by quotes 9579and 9580not followed by a comma, causing errors when the resulting ASL module was 9581compiled. Also, escape sequences within a ResourceSource string are now 9582handled correctly (especially "\\") 9583 9584---------------------------------------- 958502 September 2005. Summary of changes for version 20050902: 9586 95871) ACPI CA Core Subsystem: 9588 9589Fixed a problem with the internal Owner ID allocation and deallocation 9590mechanisms for control method execution and recursive method invocation. 9591This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 9592messages seen on some systems. Recursive method invocation depth is 9593currently limited to 255. (Alexey Starikovskiy) 9594 9595Completely eliminated all vestiges of support for the "module-level 9596executable code" until this support is fully implemented and debugged. 9597This 9598should eliminate the NO_RETURN_VALUE exceptions seen during table load on 9599some systems that invoke this support. 9600 9601Fixed a problem within the resource manager code where the transaction 9602flags 9603for a 64-bit address descriptor were handled incorrectly in the type- 9604specific flag byte. 9605 9606Consolidated duplicate code within the address descriptor resource 9607manager 9608code, reducing overall subsystem code size. 9609 9610Fixed a fault when using the AML debugger "disassemble" command to 9611disassemble individual control methods. 9612 9613Removed references to the "release_current" directory within the Unix 9614release package. 9615 9616Code and Data Size: The current and previous core subsystem library sizes 9617are shown below. These are the code and data sizes for the acpica.lib 9618produced by the Microsoft Visual C++ 6.0 compiler. These values do not 9619include any ACPI driver or OSPM code. The debug version of the code 9620includes 9621the debug output trace mechanism and has a much larger code and data 9622size. 9623Note that these values will vary depending on the efficiency of the 9624compiler 9625and the compiler options used during generation. 9626 9627 Previous Release: 9628 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9629 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9630 Current Release: 9631 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 9632 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 9633 9634 96352) iASL Compiler/Disassembler: 9636 9637Implemented an error check for illegal duplicate values in the interrupt 9638and 9639dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 9640Interrupt(). 9641 9642Implemented error checking for the Irq() and IrqNoFlags() macros to 9643detect 9644too many values in the interrupt list (16 max) and invalid values in the 9645list (range 0 - 15) 9646 9647The maximum length string literal within an ASL file is now restricted to 9648200 characters as per the ACPI specification. 9649 9650Fixed a fault when using the -ln option (generate namespace listing). 9651 9652Implemented an error check to determine if a DescriptorName within a 9653resource descriptor has already been used within the current scope. 9654 9655---------------------------------------- 965615 August 2005. Summary of changes for version 20050815: 9657 96581) ACPI CA Core Subsystem: 9659 9660Implemented a full bytewise compare to determine if a table load request 9661is 9662attempting to load a duplicate table. The compare is performed if the 9663table 9664signatures and table lengths match. This will allow different tables with 9665the same OEM Table ID and revision to be loaded - probably against the 9666ACPI 9667specification, but discovered in the field nonetheless. 9668 9669Added the changes.txt logfile to each of the zipped release packages. 9670 9671Code and Data Size: Current and previous core subsystem library sizes are 9672shown below. These are the code and data sizes for the acpica.lib 9673produced 9674by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9675any ACPI driver or OSPM code. The debug version of the code includes the 9676debug output trace mechanism and has a much larger code and data size. 9677Note 9678that these values will vary depending on the efficiency of the compiler 9679and 9680the compiler options used during generation. 9681 9682 Previous Release: 9683 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9684 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9685 Current Release: 9686 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9687 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 9688 9689 96902) iASL Compiler/Disassembler: 9691 9692Fixed a problem where incorrect AML code could be generated for Package 9693objects if optimization is disabled (via the -oa switch). 9694 9695Fixed a problem with where incorrect AML code is generated for variable- 9696length packages when the package length is not specified and the number 9697of 9698initializer values is greater than 255. 9699 9700 9701---------------------------------------- 970229 July 2005. Summary of changes for version 20050729: 9703 97041) ACPI CA Core Subsystem: 9705 9706Implemented support to ignore an attempt to install/load a particular 9707ACPI 9708table more than once. Apparently there exists BIOS code that repeatedly 9709attempts to load the same SSDT upon certain events. With assistance from 9710Venkatesh Pallipadi. 9711 9712Restructured the main interface to the AML parser in order to correctly 9713handle all exceptional conditions. This will prevent leakage of the 9714OwnerId 9715resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on 9716some 9717machines. With assistance from Alexey Starikovskiy. 9718 9719Support for "module level code" has been disabled in this version due to 9720a 9721number of issues that have appeared on various machines. The support can 9722be 9723enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 9724compilation. When the issues are fully resolved, the code will be enabled 9725by 9726default again. 9727 9728Modified the internal functions for debug print support to define the 9729FunctionName parameter as a (const char *) for compatibility with 9730compiler 9731built-in macros such as __FUNCTION__, etc. 9732 9733Linted the entire ACPICA source tree for both 32-bit and 64-bit. 9734 9735Implemented support to display an object count summary for the AML 9736Debugger 9737commands Object and Methods. 9738 9739Code and Data Size: Current and previous core subsystem library sizes are 9740shown below. These are the code and data sizes for the acpica.lib 9741produced 9742by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9743any ACPI driver or OSPM code. The debug version of the code includes the 9744debug output trace mechanism and has a much larger code and data size. 9745Note 9746that these values will vary depending on the efficiency of the compiler 9747and 9748the compiler options used during generation. 9749 9750 Previous Release: 9751 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9752 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9753 Current Release: 9754 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 9755 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 9756 9757 97582) iASL Compiler/Disassembler: 9759 9760Fixed a regression that appeared in the 20050708 version of the compiler 9761where an error message was inadvertently emitted for invocations of the 9762_OSI 9763reserved control method. 9764 9765---------------------------------------- 976608 July 2005. Summary of changes for version 20050708: 9767 97681) ACPI CA Core Subsystem: 9769 9770The use of the CPU stack in the debug version of the subsystem has been 9771considerably reduced. Previously, a debug structure was declared in every 9772function that used the debug macros. This structure has been removed in 9773favor of declaring the individual elements as parameters to the debug 9774functions. This reduces the cumulative stack use during nested execution 9775of 9776ACPI function calls at the cost of a small increase in the code size of 9777the 9778debug version of the subsystem. With assistance from Alexey Starikovskiy 9779and 9780Len Brown. 9781 9782Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 9783headers to define a macro that will return the current function name at 9784runtime (such as __FUNCTION__ or _func_, etc.) The function name is used 9785by 9786the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 9787compiler-dependent header, the function name is saved on the CPU stack 9788(one 9789pointer per function.) This mechanism is used because apparently there 9790exists no standard ANSI-C defined macro that that returns the function 9791name. 9792 9793Redesigned and reimplemented the "Owner ID" mechanism used to track 9794namespace objects created/deleted by ACPI tables and control method 9795execution. A bitmap is now used to allocate and free the IDs, thus 9796solving 9797the wraparound problem present in the previous implementation. The size 9798of 9799the namespace node descriptor was reduced by 2 bytes as a result (Alexey 9800Starikovskiy). 9801 9802Removed the UINT32_BIT and UINT16_BIT types that were used for the 9803bitfield 9804flag definitions within the headers for the predefined ACPI tables. These 9805have been replaced by UINT8_BIT in order to increase the code portability 9806of 9807the subsystem. If the use of UINT8 remains a problem, we may be forced to 9808eliminate bitfields entirely because of a lack of portability. 9809 9810Enhanced the performance of the AcpiUtUpdateObjectReference procedure. 9811This 9812is a frequently used function and this improvement increases the 9813performance 9814of the entire subsystem (Alexey Starikovskiy). 9815 9816Fixed several possible memory leaks and the inverse - premature object 9817deletion (Alexey Starikovskiy). 9818 9819Code and Data Size: Current and previous core subsystem library sizes are 9820shown below. These are the code and data sizes for the acpica.lib 9821produced 9822by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9823any ACPI driver or OSPM code. The debug version of the code includes the 9824debug output trace mechanism and has a much larger code and data size. 9825Note 9826that these values will vary depending on the efficiency of the compiler 9827and 9828the compiler options used during generation. 9829 9830 Previous Release: 9831 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9832 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9833 Current Release: 9834 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 9835 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 9836 9837---------------------------------------- 983824 June 2005. Summary of changes for version 20050624: 9839 98401) ACPI CA Core Subsystem: 9841 9842Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 9843the host-defined cache object. This allows the OSL implementation to 9844define 9845and type this object in any manner desired, simplifying the OSL 9846implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 9847Linux, and should be defined in the OS-specific header file for other 9848operating systems as required. 9849 9850Changed the interface to AcpiOsAcquireObject to directly return the 9851requested object as the function return (instead of ACPI_STATUS.) This 9852change was made for performance reasons, since this is the purpose of the 9853interface in the first place. AcpiOsAcquireObject is now similar to the 9854AcpiOsAllocate interface. 9855 9856Implemented a new AML debugger command named Businfo. This command 9857displays 9858information about all devices that have an associate _PRT object. The 9859_ADR, 9860_HID, _UID, and _CID are displayed for these devices. 9861 9862Modified the initialization sequence in AcpiInitializeSubsystem to call 9863the 9864OSL interface AcpiOslInitialize first, before any local initialization. 9865This 9866change was required because the global initialization now calls OSL 9867interfaces. 9868 9869Enhanced the Dump command to display the entire contents of Package 9870objects 9871(including all sub-objects and their values.) 9872 9873Restructured the code base to split some files because of size and/or 9874because the code logically belonged in a separate file. New files are 9875listed 9876below. All makefiles and project files included in the ACPI CA release 9877have 9878been updated. 9879 utilities/utcache.c /* Local cache interfaces */ 9880 utilities/utmutex.c /* Local mutex support */ 9881 utilities/utstate.c /* State object support */ 9882 interpreter/parser/psloop.c /* Main AML parse loop */ 9883 9884Code and Data Size: Current and previous core subsystem library sizes are 9885shown below. These are the code and data sizes for the acpica.lib 9886produced 9887by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9888any ACPI driver or OSPM code. The debug version of the code includes the 9889debug output trace mechanism and has a much larger code and data size. 9890Note 9891that these values will vary depending on the efficiency of the compiler 9892and 9893the compiler options used during generation. 9894 9895 Previous Release: 9896 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9897 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9898 Current Release: 9899 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 9900 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 9901 9902 99032) iASL Compiler/Disassembler: 9904 9905Fixed a regression introduced in version 20050513 where the use of a 9906Package 9907object within a Case() statement caused a compile time exception. The 9908original behavior has been restored (a Match() operator is emitted.) 9909 9910---------------------------------------- 991117 June 2005. Summary of changes for version 20050617: 9912 99131) ACPI CA Core Subsystem: 9914 9915Moved the object cache operations into the OS interface layer (OSL) to 9916allow 9917the host OS to handle these operations if desired (for example, the Linux 9918OSL will invoke the slab allocator). This support is optional; the 9919compile 9920time define ACPI_USE_LOCAL_CACHE may be used to utilize the original 9921cache 9922code in the ACPI CA core. The new OSL interfaces are shown below. See 9923utalloc.c for an example implementation, and acpiosxf.h for the exact 9924interface definitions. With assistance from Alexey Starikovskiy. 9925 AcpiOsCreateCache 9926 AcpiOsDeleteCache 9927 AcpiOsPurgeCache 9928 AcpiOsAcquireObject 9929 AcpiOsReleaseObject 9930 9931Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to 9932return 9933and restore a flags parameter. This fits better with many OS lock models. 9934Note: the current execution state (interrupt handler or not) is no longer 9935passed to these interfaces. If necessary, the OSL must determine this 9936state 9937by itself, a simple and fast operation. With assistance from Alexey 9938Starikovskiy. 9939 9940Fixed a problem in the ACPI table handling where a valid XSDT was assumed 9941present if the revision of the RSDP was 2 or greater. According to the 9942ACPI 9943specification, the XSDT is optional in all cases, and the table manager 9944therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 9945Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs 9946contain 9947only the RSDT. 9948 9949Fixed an interpreter problem with the Mid() operator in the case of an 9950input 9951string where the resulting output string is of zero length. It now 9952correctly 9953returns a valid, null terminated string object instead of a string object 9954with a null pointer. 9955 9956Fixed a problem with the control method argument handling to allow a 9957store 9958to an Arg object that already contains an object of type Device. The 9959Device 9960object is now correctly overwritten. Previously, an error was returned. 9961 9962 9963Enhanced the debugger Find command to emit object values in addition to 9964the 9965found object pathnames. The output format is the same as the dump 9966namespace 9967command. 9968 9969Enhanced the debugger Set command. It now has the ability to set the 9970value 9971of any Named integer object in the namespace (Previously, only method 9972locals 9973and args could be set.) 9974 9975Code and Data Size: Current and previous core subsystem library sizes are 9976shown below. These are the code and data sizes for the acpica.lib 9977produced 9978by the Microsoft Visual C++ 6.0 compiler, and these values do not include 9979any ACPI driver or OSPM code. The debug version of the code includes the 9980debug output trace mechanism and has a much larger code and data size. 9981Note 9982that these values will vary depending on the efficiency of the compiler 9983and 9984the compiler options used during generation. 9985 9986 Previous Release: 9987 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 9988 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 9989 Current Release: 9990 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 9991 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 9992 9993 99942) iASL Compiler/Disassembler: 9995 9996Fixed a regression in the disassembler where if/else/while constructs 9997were 9998output incorrectly. This problem was introduced in the previous release 9999(20050526). This problem also affected the single-step disassembly in the 10000debugger. 10001 10002Fixed a problem where compiling the reserved _OSI method would randomly 10003(but 10004rarely) produce compile errors. 10005 10006Enhanced the disassembler to emit compilable code in the face of 10007incorrect 10008AML resource descriptors. If the optional ResourceSourceIndex is present, 10009but the ResourceSource is not, do not emit the ResourceSourceIndex in the 10010disassembly. Otherwise, the resulting code cannot be compiled without 10011errors. 10012 10013---------------------------------------- 1001426 May 2005. Summary of changes for version 20050526: 10015 100161) ACPI CA Core Subsystem: 10017 10018Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 10019the module level (not within a control method.) These opcodes are 10020executed 10021exactly once at the time the table is loaded. This type of code was legal 10022up 10023until the release of ACPI 2.0B (2002) and is now supported within ACPI CA 10024in 10025order to provide backwards compatibility with earlier BIOS 10026implementations. 10027This eliminates the "Encountered executable code at module level" warning 10028that was previously generated upon detection of such code. 10029 10030Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 10031inadvertently be generated during the lookup of namespace objects in the 10032second pass parse of ACPI tables and control methods. It appears that 10033this 10034problem could occur during the resolution of forward references to 10035namespace 10036objects. 10037 10038Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 10039corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 10040allows the deadlock detection debug code to be compiled out in the normal 10041case, improving mutex performance (and overall subsystem performance) 10042considerably. 10043 10044Implemented a handful of miscellaneous fixes for possible memory leaks on 10045error conditions and error handling control paths. These fixes were 10046suggested by FreeBSD and the Coverity Prevent source code analysis tool. 10047 10048Added a check for a null RSDT pointer in AcpiGetFirmwareTable 10049(tbxfroot.c) 10050to prevent a fault in this error case. 10051 10052Code and Data Size: Current and previous core subsystem library sizes are 10053shown below. These are the code and data sizes for the acpica.lib 10054produced 10055by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10056any ACPI driver or OSPM code. The debug version of the code includes the 10057debug output trace mechanism and has a much larger code and data size. 10058Note 10059that these values will vary depending on the efficiency of the compiler 10060and 10061the compiler options used during generation. 10062 10063 Previous Release: 10064 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10065 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10066 Current Release: 10067 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 10068 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 10069 10070 100712) iASL Compiler/Disassembler: 10072 10073Implemented support to allow Type 1 and Type 2 ASL operators to appear at 10074the module level (not within a control method.) These operators will be 10075executed once at the time the table is loaded. This type of code was 10076legal 10077up until the release of ACPI 2.0B (2002) and is now supported by the iASL 10078compiler in order to provide backwards compatibility with earlier BIOS 10079ASL 10080code. 10081 10082The ACPI integer width (specified via the table revision ID or the -r 10083override, 32 or 64 bits) is now used internally during compile-time 10084constant 10085folding to ensure that constants are truncated to 32 bits if necessary. 10086Previously, the revision ID value was only emitted in the AML table 10087header. 10088 10089An error message is now generated for the Mutex and Method operators if 10090the 10091SyncLevel parameter is outside the legal range of 0 through 15. 10092 10093Fixed a problem with the Method operator ParameterTypes list handling 10094(ACPI 100953.0). Previously, more than 2 types or 2 arguments generated a syntax 10096error. 10097The actual underlying implementation of method argument typechecking is 10098still under development, however. 10099 10100---------------------------------------- 1010113 May 2005. Summary of changes for version 20050513: 10102 101031) ACPI CA Core Subsystem: 10104 10105Implemented support for PCI Express root bridges -- added support for 10106device 10107PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 10108 10109The interpreter now automatically truncates incoming 64-bit constants to 1011032 10111bits if currently executing out of a 32-bit ACPI table (Revision < 2). 10112This 10113also affects the iASL compiler constant folding. (Note: as per below, the 10114iASL compiler no longer allows 64-bit constants within 32-bit tables.) 10115 10116Fixed a problem where string and buffer objects with "static" pointers 10117(pointers to initialization data within an ACPI table) were not handled 10118consistently. The internal object copy operation now always copies the 10119data 10120to a newly allocated buffer, regardless of whether the source object is 10121static or not. 10122 10123Fixed a problem with the FromBCD operator where an implicit result 10124conversion was improperly performed while storing the result to the 10125target 10126operand. Since this is an "explicit conversion" operator, the implicit 10127conversion should never be performed on the output. 10128 10129Fixed a problem with the CopyObject operator where a copy to an existing 10130named object did not always completely overwrite the existing object 10131stored 10132at name. Specifically, a buffer-to-buffer copy did not delete the 10133existing 10134buffer. 10135 10136Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces 10137and 10138structs for consistency. 10139 10140Code and Data Size: Current and previous core subsystem library sizes are 10141shown below. These are the code and data sizes for the acpica.lib 10142produced 10143by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10144any ACPI driver or OSPM code. The debug version of the code includes the 10145debug output trace mechanism and has a much larger code and data size. 10146Note 10147that these values will vary depending on the efficiency of the compiler 10148and 10149the compiler options used during generation. 10150 10151 Previous Release: 10152 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10153 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10154 Current Release: (Same sizes) 10155 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10156 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10157 10158 101592) iASL Compiler/Disassembler: 10160 10161The compiler now emits a warning if an attempt is made to generate a 64- 10162bit 10163integer constant from within a 32-bit ACPI table (Revision < 2). The 10164integer 10165is truncated to 32 bits. 10166 10167Fixed a problem with large package objects: if the static length of the 10168package is greater than 255, the "variable length package" opcode is 10169emitted. Previously, this caused an error. This requires an update to the 10170ACPI spec, since it currently (incorrectly) states that packages larger 10171than 10172255 elements are not allowed. 10173 10174The disassembler now correctly handles variable length packages and 10175packages 10176larger than 255 elements. 10177 10178---------------------------------------- 1017908 April 2005. Summary of changes for version 20050408: 10180 101811) ACPI CA Core Subsystem: 10182 10183Fixed three cases in the interpreter where an "index" argument to an ASL 10184function was still (internally) 32 bits instead of the required 64 bits. 10185This was the Index argument to the Index, Mid, and Match operators. 10186 10187The "strupr" function is now permanently local (AcpiUtStrupr), since this 10188is 10189not a POSIX-defined function and not present in most kernel-level C 10190libraries. All references to the C library strupr function have been 10191removed 10192from the headers. 10193 10194Completed the deployment of static functions/prototypes. All prototypes 10195with 10196the static attribute have been moved from the headers to the owning C 10197file. 10198 10199Implemented an extract option (-e) for the AcpiBin utility (AML binary 10200utility). This option allows the utility to extract individual ACPI 10201tables 10202from the output of AcpiDmp. It provides the same functionality of the 10203acpixtract.pl perl script without the worry of setting the correct perl 10204options. AcpiBin runs on Windows and has not yet been generated/validated 10205in 10206the Linux/Unix environment (but should be soon). 10207 10208Updated and fixed the table dump option for AcpiBin (-d). This option 10209converts a single ACPI table to a hex/ascii file, similar to the output 10210of 10211AcpiDmp. 10212 10213Code and Data Size: Current and previous core subsystem library sizes are 10214shown below. These are the code and data sizes for the acpica.lib 10215produced 10216by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10217any ACPI driver or OSPM code. The debug version of the code includes the 10218debug output trace mechanism and has a much larger code and data size. 10219Note 10220that these values will vary depending on the efficiency of the compiler 10221and 10222the compiler options used during generation. 10223 10224 Previous Release: 10225 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10226 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10227 Current Release: 10228 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 10229 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 10230 10231 102322) iASL Compiler/Disassembler: 10233 10234Disassembler fix: Added a check to ensure that the table length found in 10235the 10236ACPI table header within the input file is not longer than the actual 10237input 10238file size. This indicates some kind of file or table corruption. 10239 10240---------------------------------------- 1024129 March 2005. Summary of changes for version 20050329: 10242 102431) ACPI CA Core Subsystem: 10244 10245An error is now generated if an attempt is made to create a Buffer Field 10246of 10247length zero (A CreateField with a length operand of zero.) 10248 10249The interpreter now issues a warning whenever executable code at the 10250module 10251level is detected during ACPI table load. This will give some idea of the 10252prevalence of this type of code. 10253 10254Implemented support for references to named objects (other than control 10255methods) within package objects. 10256 10257Enhanced package object output for the debug object. Package objects are 10258now 10259completely dumped, showing all elements. 10260 10261Enhanced miscellaneous object output for the debug object. Any object can 10262now be written to the debug object (for example, a device object can be 10263written, and the type of the object will be displayed.) 10264 10265The "static" qualifier has been added to all local functions across both 10266the 10267core subsystem and the iASL compiler. 10268 10269The number of "long" lines (> 80 chars) within the source has been 10270significantly reduced, by about 1/3. 10271 10272Cleaned up all header files to ensure that all CA/iASL functions are 10273prototyped (even static functions) and the formatting is consistent. 10274 10275Two new header files have been added, acopcode.h and acnames.h. 10276 10277Removed several obsolete functions that were no longer used. 10278 10279Code and Data Size: Current and previous core subsystem library sizes are 10280shown below. These are the code and data sizes for the acpica.lib 10281produced 10282by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10283any ACPI driver or OSPM code. The debug version of the code includes the 10284debug output trace mechanism and has a much larger code and data size. 10285Note 10286that these values will vary depending on the efficiency of the compiler 10287and 10288the compiler options used during generation. 10289 10290 Previous Release: 10291 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10292 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10293 Current Release: 10294 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 10295 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 10296 10297 10298 102992) iASL Compiler/Disassembler: 10300 10301Fixed a problem with the resource descriptor generation/support. For the 10302ResourceSourceIndex and the ResourceSource fields, both must be present, 10303or 10304both must be not present - can't have one without the other. 10305 10306The compiler now returns non-zero from the main procedure if any errors 10307have 10308occurred during the compilation. 10309 10310 10311---------------------------------------- 1031209 March 2005. Summary of changes for version 20050309: 10313 103141) ACPI CA Core Subsystem: 10315 10316The string-to-buffer implicit conversion code has been modified again 10317after 10318a change to the ACPI specification. In order to match the behavior of 10319the 10320other major ACPI implementation, the target buffer is no longer truncated 10321if 10322the source string is smaller than an existing target buffer. This change 10323requires an update to the ACPI spec, and should eliminate the recent 10324AE_AML_BUFFER_LIMIT issues. 10325 10326The "implicit return" support was rewritten to a new algorithm that 10327solves 10328the general case. Rather than attempt to determine when a method is about 10329to 10330exit, the result of every ASL operator is saved momentarily until the 10331very 10332next ASL operator is executed. Therefore, no matter how the method exits, 10333there will always be a saved implicit return value. This feature is only 10334enabled with the AcpiGbl_EnableInterpreterSlack flag, and should 10335eliminate 10336AE_AML_NO_RETURN_VALUE errors when enabled. 10337 10338Implemented implicit conversion support for the predicate (operand) of 10339the 10340If, Else, and While operators. String and Buffer arguments are 10341automatically 10342converted to Integers. 10343 10344Changed the string-to-integer conversion behavior to match the new ACPI 10345errata: "If no integer object exists, a new integer is created. The ASCII 10346string is interpreted as a hexadecimal constant. Each string character is 10347interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 10348with the first character as the most significant digit, and ending with 10349the 10350first non-hexadecimal character or end-of-string." This means that the 10351first 10352non-hex character terminates the conversion and this is the code that was 10353changed. 10354 10355Fixed a problem where the ObjectType operator would fail (fault) when 10356used 10357on an Index of a Package which pointed to a null package element. The 10358operator now properly returns zero (Uninitialized) in this case. 10359 10360Fixed a problem where the While operator used excessive memory by not 10361properly popping the result stack during execution. There was no memory 10362leak 10363after execution, however. (Code provided by Valery Podrezov.) 10364 10365Fixed a problem where references to control methods within Package 10366objects 10367caused the method to be invoked, instead of producing a reference object 10368pointing to the method. 10369 10370Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) 10371to 10372improve performance and reduce code size. (Code provided by Alexey 10373Starikovskiy.) 10374 10375Code and Data Size: Current and previous core subsystem library sizes are 10376shown below. These are the code and data sizes for the acpica.lib 10377produced 10378by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10379any ACPI driver or OSPM code. The debug version of the code includes the 10380debug output trace mechanism and has a much larger code and data size. 10381Note 10382that these values will vary depending on the efficiency of the compiler 10383and 10384the compiler options used during generation. 10385 10386 Previous Release: 10387 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10388 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10389 Current Release: 10390 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10391 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 10392 10393 103942) iASL Compiler/Disassembler: 10395 10396Fixed a problem with the Return operator with no arguments. Since the AML 10397grammar for the byte encoding requires an operand for the Return opcode, 10398the 10399compiler now emits a Return(Zero) for this case. An ACPI specification 10400update has been written for this case. 10401 10402For tables other than the DSDT, namepath optimization is automatically 10403disabled. This is because SSDTs can be loaded anywhere in the namespace, 10404the 10405compiler has no knowledge of where, and thus cannot optimize namepaths. 10406 10407Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 10408inadvertently omitted from the ACPI specification, and will require an 10409update to the spec. 10410 10411The source file scan for ASCII characters is now optional (-a). This 10412change 10413was made because some vendors place non-ascii characters within comments. 10414However, the scan is simply a brute-force byte compare to ensure all 10415characters in the file are in the range 0x00 to 0x7F. 10416 10417Fixed a problem with the CondRefOf operator where the compiler was 10418inappropriately checking for the existence of the target. Since the point 10419of 10420the operator is to check for the existence of the target at run-time, the 10421compiler no longer checks for the target existence. 10422 10423Fixed a problem where errors generated from the internal AML interpreter 10424during constant folding were not handled properly, causing a fault. 10425 10426Fixed a problem with overly aggressive range checking for the Stall 10427operator. The valid range (max 255) is now only checked if the operand is 10428of 10429type Integer. All other operand types cannot be statically checked. 10430 10431Fixed a problem where control method references within the RefOf, 10432DeRefOf, 10433and ObjectType operators were not treated properly. They are now treated 10434as 10435actual references, not method invocations. 10436 10437Fixed and enhanced the "list namespace" option (-ln). This option was 10438broken 10439a number of releases ago. 10440 10441Improved error handling for the Field, IndexField, and BankField 10442operators. 10443The compiler now cleanly reports and recovers from errors in the field 10444component (FieldUnit) list. 10445 10446Fixed a disassembler problem where the optional ResourceDescriptor fields 10447TRS and TTP were not always handled correctly. 10448 10449Disassembler - Comments in output now use "//" instead of "/*" 10450 10451---------------------------------------- 1045228 February 2005. Summary of changes for version 20050228: 10453 104541) ACPI CA Core Subsystem: 10455 10456Fixed a problem where the result of an Index() operator (an object 10457reference) must increment the reference count on the target object for 10458the 10459life of the object reference. 10460 10461Implemented AML Interpreter and Debugger support for the new ACPI 3.0 10462Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and 10463WordSpace 10464resource descriptors. 10465 10466Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 10467Space Descriptor" string, indicating interpreter support for the 10468descriptors 10469above. 10470 10471Implemented header support for the new ACPI 3.0 FADT flag bits. 10472 10473Implemented header support for the new ACPI 3.0 PCI Express bits for the 10474PM1 10475status/enable registers. 10476 10477Updated header support for the MADT processor local Apic struct and MADT 10478platform interrupt source struct for new ACPI 3.0 fields. 10479 10480Implemented header support for the SRAT and SLIT ACPI tables. 10481 10482Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" 10483flag 10484at runtime. 10485 10486Code and Data Size: Current and previous core subsystem library sizes are 10487shown below. These are the code and data sizes for the acpica.lib 10488produced 10489by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10490any ACPI driver or OSPM code. The debug version of the code includes the 10491debug output trace mechanism and has a much larger code and data size. 10492Note 10493that these values will vary depending on the efficiency of the compiler 10494and 10495the compiler options used during generation. 10496 10497 Previous Release: 10498 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10499 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10500 Current Release: 10501 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10502 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 10503 10504 105052) iASL Compiler/Disassembler: 10506 10507Fixed a problem with the internal 64-bit String-to-integer conversion 10508with 10509strings less than two characters long. 10510 10511Fixed a problem with constant folding where the result of the Index() 10512operator can not be considered a constant. This means that Index() cannot 10513be 10514a type3 opcode and this will require an update to the ACPI specification. 10515 10516Disassembler: Implemented support for the TTP, MTP, and TRS resource 10517descriptor fields. These fields were inadvertently ignored and not output 10518in 10519the disassembly of the resource descriptor. 10520 10521 10522 ---------------------------------------- 1052311 February 2005. Summary of changes for version 20050211: 10524 105251) ACPI CA Core Subsystem: 10526 10527Implemented ACPI 3.0 support for implicit conversion within the Match() 10528operator. MatchObjects can now be of type integer, buffer, or string 10529instead 10530of just type integer. Package elements are implicitly converted to the 10531type 10532of the MatchObject. This change aligns the behavior of Match() with the 10533behavior of the other logical operators (LLess(), etc.) It also requires 10534an 10535errata change to the ACPI specification as this support was intended for 10536ACPI 3.0, but was inadvertently omitted. 10537 10538Fixed a problem with the internal implicit "to buffer" conversion. 10539Strings 10540that are converted to buffers will cause buffer truncation if the string 10541is 10542smaller than the target buffer. Integers that are converted to buffers 10543will 10544not cause buffer truncation, only zero extension (both as per the ACPI 10545spec.) The problem was introduced when code was added to truncate the 10546buffer, but this should not be performed in all cases, only the string 10547case. 10548 10549Fixed a problem with the Buffer and Package operators where the 10550interpreter 10551would get confused if two such operators were used as operands to an ASL 10552operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 10553stack was not being popped after the execution of these operators, 10554resulting 10555in an AE_NO_RETURN_VALUE exception. 10556 10557Fixed a problem with constructs of the form Store(Index(...),...). The 10558reference object returned from Index was inadvertently resolved to an 10559actual 10560value. This problem was introduced in version 20050114 when the behavior 10561of 10562Store() was modified to restrict the object types that can be used as the 10563source operand (to match the ACPI specification.) 10564 10565Reduced excessive stack use within the AcpiGetObjectInfo procedure. 10566 10567Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 10568 10569Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 10570 10571Code and Data Size: Current and previous core subsystem library sizes are 10572shown below. These are the code and data sizes for the acpica.lib 10573produced 10574by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10575any ACPI driver or OSPM code. The debug version of the code includes the 10576debug output trace mechanism and has a much larger code and data size. 10577Note 10578that these values will vary depending on the efficiency of the compiler 10579and 10580the compiler options used during generation. 10581 10582 Previous Release: 10583 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10584 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10585 Current Release: 10586 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 10587 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 10588 10589 105902) iASL Compiler/Disassembler: 10591 10592Fixed a code generation problem in the constant folding optimization code 10593where incorrect code was generated if a constant was reduced to a buffer 10594object (i.e., a reduced type 5 opcode.) 10595 10596Fixed a typechecking problem for the ToBuffer operator. Caused by an 10597incorrect return type in the internal opcode information table. 10598 10599---------------------------------------- 1060025 January 2005. Summary of changes for version 20050125: 10601 106021) ACPI CA Core Subsystem: 10603 10604Fixed a recently introduced problem with the Global Lock where the 10605underlying semaphore was not created. This problem was introduced in 10606version 20050114, and caused an AE_AML_NO_OPERAND exception during an 10607Acquire() operation on _GL. 10608 10609The local object cache is now optional, and is disabled by default. Both 10610AcpiExec and the iASL compiler enable the cache because they run in user 10611mode and this enhances their performance. #define 10612ACPI_ENABLE_OBJECT_CACHE 10613to enable the local cache. 10614 10615Fixed an issue in the internal function AcpiUtEvaluateObject concerning 10616the 10617optional "implicit return" support where an error was returned if no 10618return 10619object was expected, but one was implicitly returned. AE_OK is now 10620returned 10621in this case and the implicitly returned object is deleted. 10622AcpiUtEvaluateObject is only occasionally used, and only to execute 10623reserved 10624methods such as _STA and _INI where the return type is known up front. 10625 10626Fixed a few issues with the internal convert-to-integer code. It now 10627returns 10628an error if an attempt is made to convert a null string, a string of only 10629blanks/tabs, or a zero-length buffer. This affects both implicit 10630conversion 10631and explicit conversion via the ToInteger() operator. 10632 10633The internal debug code in AcpiUtAcquireMutex has been commented out. It 10634is 10635not needed for normal operation and should increase the performance of 10636the 10637entire subsystem. The code remains in case it is needed for debug 10638purposes 10639again. 10640 10641The AcpiExec source and makefile are included in the Unix/Linux package 10642for 10643the first time. 10644 10645Code and Data Size: Current and previous core subsystem library sizes are 10646shown below. These are the code and data sizes for the acpica.lib 10647produced 10648by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10649any ACPI driver or OSPM code. The debug version of the code includes the 10650debug output trace mechanism and has a much larger code and data size. 10651Note 10652that these values will vary depending on the efficiency of the compiler 10653and 10654the compiler options used during generation. 10655 10656 Previous Release: 10657 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10658 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10659 Current Release: 10660 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 10661 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 10662 106632) iASL Compiler/Disassembler: 10664 10665Switch/Case support: A warning is now issued if the type of the Switch 10666value 10667cannot be determined at compile time. For example, Switch(Arg0) will 10668generate the warning, and the type is assumed to be an integer. As per 10669the 10670ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate 10671the 10672warning. 10673 10674Switch/Case support: Implemented support for buffer and string objects as 10675the switch value. This is an ACPI 3.0 feature, now that LEqual supports 10676buffers and strings. 10677 10678Switch/Case support: The emitted code for the LEqual() comparisons now 10679uses 10680the switch value as the first operand, not the second. The case value is 10681now 10682the second operand, and this allows the case value to be implicitly 10683converted to the type of the switch value, not the other way around. 10684 10685Switch/Case support: Temporary variables are now emitted immediately 10686within 10687the control method, not at the global level. This means that there are 10688now 1068936 temps available per-method, not 36 temps per-module as was the case 10690with 10691the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 10692 10693---------------------------------------- 1069414 January 2005. Summary of changes for version 20050114: 10695 10696Added 2005 copyright to all module headers. This affects every module in 10697the core subsystem, iASL compiler, and the utilities. 10698 106991) ACPI CA Core Subsystem: 10700 10701Fixed an issue with the String-to-Buffer conversion code where the string 10702null terminator was not included in the buffer after conversion, but 10703there 10704is existing ASL that assumes the string null terminator is included. This 10705is 10706the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 10707introduced in the previous version when the code was updated to correctly 10708set the converted buffer size as per the ACPI specification. The ACPI 10709spec 10710is ambiguous and will be updated to specify that the null terminator must 10711be 10712included in the converted buffer. This also affects the ToBuffer() ASL 10713operator. 10714 10715Fixed a problem with the Mid() ASL/AML operator where it did not work 10716correctly on Buffer objects. Newly created sub-buffers were not being 10717marked 10718as initialized. 10719 10720 10721Fixed a problem in AcpiTbFindTable where incorrect string compares were 10722performed on the OemId and OemTableId table header fields. These fields 10723are 10724not null terminated, so strncmp is now used instead of strcmp. 10725 10726Implemented a restriction on the Store() ASL/AML operator to align the 10727behavior with the ACPI specification. Previously, any object could be 10728used 10729as the source operand. Now, the only objects that may be used are 10730Integers, 10731Buffers, Strings, Packages, Object References, and DDB Handles. If 10732necessary, the original behavior can be restored by enabling the 10733EnableInterpreterSlack flag. 10734 10735Enhanced the optional "implicit return" support to allow an implicit 10736return 10737value from methods that are invoked externally via the AcpiEvaluateObject 10738interface. This enables implicit returns from the _STA and _INI methods, 10739for example. 10740 10741Changed the Revision() ASL/AML operator to return the current version of 10742the 10743AML interpreter, in the YYYYMMDD format. Previously, it incorrectly 10744returned 10745the supported ACPI version (This is the function of the _REV method). 10746 10747Updated the _REV predefined method to return the currently supported 10748version 10749of ACPI, now 3. 10750 10751Implemented batch mode option for the AcpiExec utility (-b). 10752 10753Code and Data Size: Current and previous core subsystem library sizes are 10754shown below. These are the code and data sizes for the acpica.lib 10755produced 10756by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10757any ACPI driver or OSPM code. The debug version of the code includes the 10758debug output trace mechanism and has a much larger code and data size. 10759Note 10760that these values will vary depending on the efficiency of the compiler 10761and 10762the compiler options used during generation. 10763 10764 Previous Release: 10765 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10766 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10767 Current Release: 10768 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 10769 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 10770 10771---------------------------------------- 1077210 December 2004. Summary of changes for version 20041210: 10773 10774ACPI 3.0 support is nearing completion in both the iASL compiler and the 10775ACPI CA core subsystem. 10776 107771) ACPI CA Core Subsystem: 10778 10779Fixed a problem in the ToDecimalString operator where the resulting 10780string 10781length was incorrectly calculated. The length is now calculated exactly, 10782eliminating incorrect AE_STRING_LIMIT exceptions. 10783 10784Fixed a problem in the ToHexString operator to allow a maximum 200 10785character 10786string to be produced. 10787 10788Fixed a problem in the internal string-to-buffer and buffer-to-buffer 10789copy 10790routine where the length of the resulting buffer was not truncated to the 10791new size (if the target buffer already existed). 10792 10793Code and Data Size: Current and previous core subsystem library sizes are 10794shown below. These are the code and data sizes for the acpica.lib 10795produced 10796by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10797any ACPI driver or OSPM code. The debug version of the code includes the 10798debug output trace mechanism and has a much larger code and data size. 10799Note 10800that these values will vary depending on the efficiency of the compiler 10801and 10802the compiler options used during generation. 10803 10804 Previous Release: 10805 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10806 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10807 Current Release: 10808 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10809 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 10810 10811 108122) iASL Compiler/Disassembler: 10813 10814Implemented the new ACPI 3.0 resource template macros - DWordSpace, 10815ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 10816Includes support in the disassembler. 10817 10818Implemented support for the new (ACPI 3.0) parameter to the Register 10819macro, 10820AccessSize. 10821 10822Fixed a problem where the _HE resource name for the Interrupt macro was 10823referencing bit 0 instead of bit 1. 10824 10825Implemented check for maximum 255 interrupts in the Interrupt macro. 10826 10827Fixed a problem with the predefined resource descriptor names where 10828incorrect AML code was generated if the offset within the resource buffer 10829was 0 or 1. The optimizer shortened the AML code to a single byte opcode 10830but did not update the surrounding package lengths. 10831 10832Changes to the Dma macro: All channels within the channel list must be 10833in 10834the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 10835optional (default is BusMaster). 10836 10837Implemented check for maximum 7 data bytes for the VendorShort macro. 10838 10839The ReadWrite parameter is now optional for the Memory32 and similar 10840macros. 10841 10842---------------------------------------- 1084303 December 2004. Summary of changes for version 20041203: 10844 108451) ACPI CA Core Subsystem: 10846 10847The low-level field insertion/extraction code (exfldio) has been 10848completely 10849rewritten to eliminate unnecessary complexity, bugs, and boundary 10850conditions. 10851 10852Fixed a problem in the ToInteger, ToBuffer, ToHexString, and 10853ToDecimalString 10854operators where the input operand could be inadvertently deleted if no 10855conversion was necessary (e.g., if the input to ToInteger was an Integer 10856object.) 10857 10858Fixed a problem with the ToDecimalString and ToHexString where an 10859incorrect 10860exception code was returned if the resulting string would be > 200 chars. 10861AE_STRING_LIMIT is now returned. 10862 10863Fixed a problem with the Concatenate operator where AE_OK was always 10864returned, even if the operation failed. 10865 10866Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 10867semaphores to be allocated. 10868 10869Code and Data Size: Current and previous core subsystem library sizes are 10870shown below. These are the code and data sizes for the acpica.lib 10871produced 10872by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10873any ACPI driver or OSPM code. The debug version of the code includes the 10874debug output trace mechanism and has a much larger code and data size. 10875Note 10876that these values will vary depending on the efficiency of the compiler 10877and 10878the compiler options used during generation. 10879 10880 Previous Release: 10881 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10882 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10883 Current Release: 10884 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 10885 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 10886 10887 108882) iASL Compiler/Disassembler: 10889 10890Fixed typechecking for the ObjectType and SizeOf operators. Problem was 10891recently introduced in 20041119. 10892 10893Fixed a problem with the ToUUID macro where the upper nybble of each 10894buffer 10895byte was inadvertently set to zero. 10896 10897---------------------------------------- 1089819 November 2004. Summary of changes for version 20041119: 10899 109001) ACPI CA Core Subsystem: 10901 10902Fixed a problem in the internal ConvertToInteger routine where new 10903integers 10904were not truncated to 32 bits for 32-bit ACPI tables. This routine 10905converts 10906buffers and strings to integers. 10907 10908Implemented support to store a value to an Index() on a String object. 10909This 10910is an ACPI 2.0 feature that had not yet been implemented. 10911 10912Implemented new behavior for storing objects to individual package 10913elements 10914(via the Index() operator). The previous behavior was to invoke the 10915implicit 10916conversion rules if an object was already present at the index. The new 10917behavior is to simply delete any existing object and directly store the 10918new 10919object. Although the ACPI specification seems unclear on this subject, 10920other 10921ACPI implementations behave in this manner. (This is the root of the 10922AE_BAD_HEX_CONSTANT issue.) 10923 10924Modified the RSDP memory scan mechanism to support the extended checksum 10925for 10926ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 10927RSDP signature is found with a valid checksum. 10928 10929Code and Data Size: Current and previous core subsystem library sizes are 10930shown below. These are the code and data sizes for the acpica.lib 10931produced 10932by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10933any ACPI driver or OSPM code. The debug version of the code includes the 10934debug output trace mechanism and has a much larger code and data size. 10935Note 10936that these values will vary depending on the efficiency of the compiler 10937and 10938the compiler options used during generation. 10939 10940 Previous Release: 10941 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10942 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10943 Current Release: 10944 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10945 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10946 10947 109482) iASL Compiler/Disassembler: 10949 10950Fixed a missing semicolon in the aslcompiler.y file. 10951 10952---------------------------------------- 1095305 November 2004. Summary of changes for version 20041105: 10954 109551) ACPI CA Core Subsystem: 10956 10957Implemented support for FADT revision 2. This was an interim table 10958(between 10959ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 10960 10961Implemented optional support to allow uninitialized LocalX and ArgX 10962variables in a control method. The variables are initialized to an 10963Integer 10964object with a value of zero. This support is enabled by setting the 10965AcpiGbl_EnableInterpreterSlack flag to TRUE. 10966 10967Implemented support for Integer objects for the SizeOf operator. Either 109684 10969or 8 is returned, depending on the current integer size (32-bit or 64- 10970bit, 10971depending on the parent table revision). 10972 10973Fixed a problem in the implementation of the SizeOf and ObjectType 10974operators 10975where the operand was resolved to a value too early, causing incorrect 10976return values for some objects. 10977 10978Fixed some possible memory leaks during exceptional conditions. 10979 10980Code and Data Size: Current and previous core subsystem library sizes are 10981shown below. These are the code and data sizes for the acpica.lib 10982produced 10983by the Microsoft Visual C++ 6.0 compiler, and these values do not include 10984any ACPI driver or OSPM code. The debug version of the code includes the 10985debug output trace mechanism and has a much larger code and data size. 10986Note 10987that these values will vary depending on the efficiency of the compiler 10988and 10989the compiler options used during generation. 10990 10991 Previous Release: 10992 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 10993 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 10994 Current Release: 10995 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 10996 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 10997 10998 109992) iASL Compiler/Disassembler: 11000 11001Implemented support for all ACPI 3.0 reserved names and methods. 11002 11003Implemented all ACPI 3.0 grammar elements in the front-end, including 11004support for semicolons. 11005 11006Implemented the ACPI 3.0 Function() and ToUUID() macros 11007 11008Fixed a problem in the disassembler where a Scope() operator would not be 11009emitted properly if the target of the scope was in another table. 11010 11011---------------------------------------- 1101215 October 2004. Summary of changes for version 20041015: 11013 11014Note: ACPI CA is currently undergoing an in-depth and complete formal 11015evaluation to test/verify the following areas. Other suggestions are 11016welcome. This will result in an increase in the frequency of releases and 11017the number of bug fixes in the next few months. 11018 - Functional tests for all ASL/AML operators 11019 - All implicit/explicit type conversions 11020 - Bit fields and operation regions 11021 - 64-bit math support and 32-bit-only "truncated" math support 11022 - Exceptional conditions, both compiler and interpreter 11023 - Dynamic object deletion and memory leaks 11024 - ACPI 3.0 support when implemented 11025 - External interfaces to the ACPI subsystem 11026 11027 110281) ACPI CA Core Subsystem: 11029 11030Fixed two alignment issues on 64-bit platforms - within debug statements 11031in 11032AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the 11033Address 11034field within the non-aligned ACPI generic address structure. 11035 11036Fixed a problem in the Increment and Decrement operators where incorrect 11037operand resolution could result in the inadvertent modification of the 11038original integer when the integer is passed into another method as an 11039argument and the arg is then incremented/decremented. 11040 11041Fixed a problem in the FromBCD operator where the upper 32-bits of a 64- 11042bit 11043BCD number were truncated during conversion. 11044 11045Fixed a problem in the ToDecimal operator where the length of the 11046resulting 11047string could be set incorrectly too long if the input operand was a 11048Buffer 11049object. 11050 11051Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte 11052(0) 11053within a buffer would prematurely terminate a compare between buffer 11054objects. 11055 11056Added a check for string overflow (>200 characters as per the ACPI 11057specification) during the Concatenate operator with two string operands. 11058 11059Code and Data Size: Current and previous core subsystem library sizes are 11060shown below. These are the code and data sizes for the acpica.lib 11061produced 11062by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11063any ACPI driver or OSPM code. The debug version of the code includes the 11064debug output trace mechanism and has a much larger code and data size. 11065Note 11066that these values will vary depending on the efficiency of the compiler 11067and 11068the compiler options used during generation. 11069 11070 Previous Release: 11071 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11072 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11073 Current Release: 11074 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11075 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 11076 11077 11078 110792) iASL Compiler/Disassembler: 11080 11081Allow the use of the ObjectType operator on uninitialized Locals and Args 11082(returns 0 as per the ACPI specification). 11083 11084Fixed a problem where the compiler would fault if there was a syntax 11085error 11086in the FieldName of all of the various CreateXXXField operators. 11087 11088Disallow the use of lower case letters within the EISAID macro, as per 11089the 11090ACPI specification. All EISAID strings must be of the form "UUUNNNN" 11091Where 11092U is an uppercase letter and N is a hex digit. 11093 11094 11095---------------------------------------- 1109606 October 2004. Summary of changes for version 20041006: 11097 110981) ACPI CA Core Subsystem: 11099 11100Implemented support for the ACPI 3.0 Timer operator. This ASL function 11101implements a 64-bit timer with 100 nanosecond granularity. 11102 11103Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 11104implement the ACPI 3.0 Timer operator. This allows the host OS to 11105implement 11106the timer with the best clock available. Also, it keeps the core 11107subsystem 11108out of the clock handling business, since the host OS (usually) performs 11109this function. 11110 11111Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 11112functions use a 64-bit address which is part of the packed ACPI Generic 11113Address Structure. Since the structure is non-aligned, the alignment 11114macros 11115are now used to extract the address to a local variable before use. 11116 11117Fixed a problem where the ToInteger operator assumed all input strings 11118were 11119hexadecimal. The operator now handles both decimal strings and hex 11120strings 11121(prefixed with "0x"). 11122 11123Fixed a problem where the string length in the string object created as a 11124result of the internal ConvertToString procedure could be incorrect. This 11125potentially affected all implicit conversions and also the 11126ToDecimalString 11127and ToHexString operators. 11128 11129Fixed two problems in the ToString operator. If the length parameter was 11130zero, an incorrect string object was created and the value of the input 11131length parameter was inadvertently changed from zero to Ones. 11132 11133Fixed a problem where the optional ResourceSource string in the 11134ExtendedIRQ 11135resource macro was ignored. 11136 11137Simplified the interfaces to the internal division functions, reducing 11138code 11139size and complexity. 11140 11141Code and Data Size: Current and previous core subsystem library sizes are 11142shown below. These are the code and data sizes for the acpica.lib 11143produced 11144by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11145any ACPI driver or OSPM code. The debug version of the code includes the 11146debug output trace mechanism and has a much larger code and data size. 11147Note 11148that these values will vary depending on the efficiency of the compiler 11149and 11150the compiler options used during generation. 11151 11152 Previous Release: 11153 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11154 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11155 Current Release: 11156 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11157 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 11158 11159 111602) iASL Compiler/Disassembler: 11161 11162Implemented support for the ACPI 3.0 Timer operator. 11163 11164Fixed a problem where the Default() operator was inadvertently ignored in 11165a 11166Switch/Case block. This was a problem in the translation of the Switch 11167statement to If...Else pairs. 11168 11169Added support to allow a standalone Return operator, with no parentheses 11170(or 11171operands). 11172 11173Fixed a problem with code generation for the ElseIf operator where the 11174translated Else...If parse tree was improperly constructed leading to the 11175loss of some code. 11176 11177---------------------------------------- 1117822 September 2004. Summary of changes for version 20040922: 11179 111801) ACPI CA Core Subsystem: 11181 11182Fixed a problem with the implementation of the LNot() operator where 11183"Ones" 11184was not returned for the TRUE case. Changed the code to return Ones 11185instead 11186of (!Arg) which was usually 1. This change affects iASL constant folding 11187for 11188this operator also. 11189 11190Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was 11191not 11192initialized properly -- Now zero the entire buffer in this case where the 11193buffer already exists. 11194 11195Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 11196Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 11197related code considerably. This will require changes/updates to all OS 11198interface layers (OSLs.) 11199 11200Implemented a new external interface, AcpiInstallExceptionHandler, to 11201allow 11202a system exception handler to be installed. This handler is invoked upon 11203any 11204run-time exception that occurs during control method execution. 11205 11206Added support for the DSDT in AcpiTbFindTable. This allows the 11207DataTableRegion() operator to access the local copy of the DSDT. 11208 11209Code and Data Size: Current and previous core subsystem library sizes are 11210shown below. These are the code and data sizes for the acpica.lib 11211produced 11212by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11213any ACPI driver or OSPM code. The debug version of the code includes the 11214debug output trace mechanism and has a much larger code and data size. 11215Note 11216that these values will vary depending on the efficiency of the compiler 11217and 11218the compiler options used during generation. 11219 11220 Previous Release: 11221 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11222 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11223 Current Release: 11224 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 11225 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 11226 11227 112282) iASL Compiler/Disassembler: 11229 11230Fixed a problem with constant folding and the LNot operator. LNot was 11231returning 1 in the TRUE case, not Ones as per the ACPI specification. 11232This 11233could result in the generation of an incorrect folded/reduced constant. 11234 11235End-Of-File is now allowed within a "//"-style comment. A parse error no 11236longer occurs if such a comment is at the very end of the input ASL 11237source 11238file. 11239 11240Implemented the "-r" option to override the Revision in the table header. 11241The initial use of this option will be to simplify the evaluation of the 11242AML 11243interpreter by allowing a single ASL source module to be compiled for 11244either 1124532-bit or 64-bit integers. 11246 11247 11248---------------------------------------- 1124927 August 2004. Summary of changes for version 20040827: 11250 112511) ACPI CA Core Subsystem: 11252 11253- Implemented support for implicit object conversion in the non-numeric 11254logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, 11255and 11256LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 11257the second operand is implicitly converted on the fly to match the type 11258of 11259the first operand. For example: 11260 11261 LEqual (Source1, Source2) 11262 11263Source1 and Source2 must each evaluate to an integer, a string, or a 11264buffer. 11265The data type of Source1 dictates the required type of Source2. Source2 11266is 11267implicitly converted if necessary to match the type of Source1. 11268 11269- Updated and corrected the behavior of the string conversion support. 11270The 11271rules concerning conversion of buffers to strings (according to the ACPI 11272specification) are as follows: 11273 11274ToDecimalString - explicit byte-wise conversion of buffer to string of 11275decimal values (0-255) separated by commas. ToHexString - explicit byte- 11276wise 11277conversion of buffer to string of hex values (0-FF) separated by commas. 11278ToString - explicit byte-wise conversion of buffer to string. Byte-by- 11279byte 11280copy with no transform except NULL terminated. Any other implicit buffer- 11281to- 11282string conversion - byte-wise conversion of buffer to string of hex 11283values 11284(0-FF) separated by spaces. 11285 11286- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 11287 11288- Fixed a problem in AcpiNsGetPathnameLength where the returned length 11289was 11290one byte too short in the case of a node in the root scope. This could 11291cause a fault during debug output. 11292 11293- Code and Data Size: Current and previous core subsystem library sizes 11294are 11295shown below. These are the code and data sizes for the acpica.lib 11296produced 11297by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11298any ACPI driver or OSPM code. The debug version of the code includes the 11299debug output trace mechanism and has a much larger code and data size. 11300Note 11301that these values will vary depending on the efficiency of the compiler 11302and 11303the compiler options used during generation. 11304 11305 Previous Release: 11306 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11307 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11308 Current Release: 11309 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 11310 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 11311 11312 113132) iASL Compiler/Disassembler: 11314 11315- Fixed a Linux generation error. 11316 11317 11318---------------------------------------- 1131916 August 2004. Summary of changes for version 20040816: 11320 113211) ACPI CA Core Subsystem: 11322 11323Designed and implemented support within the AML interpreter for the so- 11324called "implicit return". This support returns the result of the last 11325ASL 11326operation within a control method, in the absence of an explicit Return() 11327operator. A few machines depend on this behavior, even though it is not 11328explicitly supported by the ASL language. It is optional support that 11329can 11330be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 11331 11332Removed support for the PCI_Config address space from the internal low 11333level 11334hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 11335support was not used internally, and would not work correctly anyway 11336because 11337the PCI bus number and segment number were not supported. There are 11338separate interfaces for PCI configuration space access because of the 11339unique 11340interface. 11341 11342Code and Data Size: Current and previous core subsystem library sizes are 11343shown below. These are the code and data sizes for the acpica.lib 11344produced 11345by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11346any ACPI driver or OSPM code. The debug version of the code includes the 11347debug output trace mechanism and has a much larger code and data size. 11348Note 11349that these values will vary depending on the efficiency of the compiler 11350and 11351the compiler options used during generation. 11352 11353 Previous Release: 11354 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11355 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11356 Current Release: 11357 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 11358 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 11359 11360 113612) iASL Compiler/Disassembler: 11362 11363Fixed a problem where constants in ASL expressions at the root level (not 11364within a control method) could be inadvertently truncated during code 11365generation. This problem was introduced in the 20040715 release. 11366 11367 11368---------------------------------------- 1136915 July 2004. Summary of changes for version 20040715: 11370 113711) ACPI CA Core Subsystem: 11372 11373Restructured the internal HW GPE interfaces to pass/track the current 11374state 11375of interrupts (enabled/disabled) in order to avoid possible deadlock and 11376increase flexibility of the interfaces. 11377 11378Implemented a "lexicographical compare" for String and Buffer objects 11379within 11380the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual - 11381- 11382as per further clarification to the ACPI specification. Behavior is 11383similar 11384to C library "strcmp". 11385 11386Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 11387external function. In the 32-bit non-debug case, the stack use has been 11388reduced from 168 bytes to 32 bytes. 11389 11390Deployed a new run-time configuration flag, 11391AcpiGbl_EnableInterpreterSlack, 11392whose purpose is to allow the AML interpreter to forgive certain bad AML 11393constructs. Default setting is FALSE. 11394 11395Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field 11396IO 11397support code. If enabled, it allows field access to go beyond the end of 11398a 11399region definition if the field is within the region length rounded up to 11400the 11401next access width boundary (a common coding error.) 11402 11403Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 11404ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, 11405these 11406symbols are lowercased by the latest version of the AcpiSrc tool. 11407 11408The prototypes for the PCI interfaces in acpiosxf.h have been updated to 11409rename "Register" to simply "Reg" to prevent certain compilers from 11410complaining. 11411 11412Code and Data Size: Current and previous core subsystem library sizes are 11413shown below. These are the code and data sizes for the acpica.lib 11414produced 11415by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11416any ACPI driver or OSPM code. The debug version of the code includes the 11417debug output trace mechanism and has a much larger code and data size. 11418Note 11419that these values will vary depending on the efficiency of the compiler 11420and 11421the compiler options used during generation. 11422 11423 Previous Release: 11424 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11425 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11426 Current Release: 11427 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 11428 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 11429 11430 114312) iASL Compiler/Disassembler: 11432 11433Implemented full support for Package objects within the Case() operator. 11434Note: The Break() operator is currently not supported within Case blocks 11435(TermLists) as there is some question about backward compatibility with 11436ACPI 114371.0 interpreters. 11438 11439 11440Fixed a problem where complex terms were not supported properly within 11441the 11442Switch() operator. 11443 11444Eliminated extraneous warning for compiler-emitted reserved names of the 11445form "_T_x". (Used in Switch/Case operators.) 11446 11447Eliminated optimization messages for "_T_x" objects and small constants 11448within the DefinitionBlock operator. 11449 11450 11451---------------------------------------- 1145215 June 2004. Summary of changes for version 20040615: 11453 114541) ACPI CA Core Subsystem: 11455 11456Implemented support for Buffer and String objects (as per ACPI 2.0) for 11457the 11458following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11459LLessEqual. 11460 11461All directory names in the entire source package are lower case, as they 11462were in earlier releases. 11463 11464Implemented "Disassemble" command in the AML debugger that will 11465disassemble 11466a single control method. 11467 11468Code and Data Size: Current and previous core subsystem library sizes are 11469shown below. These are the code and data sizes for the acpica.lib 11470produced 11471by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11472any ACPI driver or OSPM code. The debug version of the code includes the 11473debug output trace mechanism and has a much larger code and data size. 11474Note 11475that these values will vary depending on the efficiency of the compiler 11476and 11477the compiler options used during generation. 11478 11479 Previous Release: 11480 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11481 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11482 11483 Current Release: 11484 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 11485 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 11486 11487 114882) iASL Compiler/Disassembler: 11489 11490Implemented support for Buffer and String objects (as per ACPI 2.0) for 11491the 11492following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 11493LLessEqual. 11494 11495All directory names in the entire source package are lower case, as they 11496were in earlier releases. 11497 11498Fixed a fault when using the -g or -d<nofilename> options if the FADT was 11499not found. 11500 11501Fixed an issue with the Windows version of the compiler where later 11502versions 11503of Windows place the FADT in the registry under the name "FADT" and not 11504"FACP" as earlier versions did. This applies when using the -g or - 11505d<nofilename> options. The compiler now looks for both strings as 11506necessary. 11507 11508Fixed a problem with compiler namepath optimization where a namepath 11509within 11510the Scope() operator could not be optimized if the namepath was a subpath 11511of 11512the current scope path. 11513 11514---------------------------------------- 1151527 May 2004. Summary of changes for version 20040527: 11516 115171) ACPI CA Core Subsystem: 11518 11519Completed a new design and implementation for EBDA (Extended BIOS Data 11520Area) 11521support in the RSDP scan code. The original code improperly scanned for 11522the 11523EBDA by simply scanning from memory location 0 to 0x400. The correct 11524method 11525is to first obtain the EBDA pointer from within the BIOS data area, then 11526scan 1K of memory starting at the EBDA pointer. There appear to be few 11527if 11528any machines that place the RSDP in the EBDA, however. 11529 11530Integrated a fix for a possible fault during evaluation of BufferField 11531arguments. Obsolete code that was causing the problem was removed. 11532 11533Found and fixed a problem in the Field Support Code where data could be 11534corrupted on a bit field read that starts on an aligned boundary but does 11535not end on an aligned boundary. Merged the read/write "datum length" 11536calculation code into a common procedure. 11537 11538Rolled in a couple of changes to the FreeBSD-specific header. 11539 11540 11541Code and Data Size: Current and previous core subsystem library sizes are 11542shown below. These are the code and data sizes for the acpica.lib 11543produced 11544by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11545any ACPI driver or OSPM code. The debug version of the code includes the 11546debug output trace mechanism and has a much larger code and data size. 11547Note 11548that these values will vary depending on the efficiency of the compiler 11549and 11550the compiler options used during generation. 11551 11552 Previous Release: 11553 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11554 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11555 Current Release: 11556 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 11557 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 11558 11559 115602) iASL Compiler/Disassembler: 11561 11562Fixed a generation warning produced by some overly-verbose compilers for 11563a 1156464-bit constant. 11565 11566---------------------------------------- 1156714 May 2004. Summary of changes for version 20040514: 11568 115691) ACPI CA Core Subsystem: 11570 11571Fixed a problem where hardware GPE enable bits sometimes not set properly 11572during and after GPE method execution. Result of 04/27 changes. 11573 11574Removed extra "clear all GPEs" when sleeping/waking. 11575 11576Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 11577AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above 11578to 11579the new AcpiEv* calls as appropriate. 11580 11581ACPI_OS_NAME was removed from the OS-specific headers. The default name 11582is 11583now "Microsoft Windows NT" for maximum compatibility. However this can 11584be 11585changed by modifying the acconfig.h file. 11586 11587Allow a single invocation of AcpiInstallNotifyHandler for a handler that 11588traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 11589 11590Run _INI methods on ThermalZone objects. This is against the ACPI 11591specification, but there is apparently ASL code in the field that has 11592these 11593_INI methods, and apparently "other" AML interpreters execute them. 11594 11595Performed a full 16/32/64 bit lint that resulted in some small changes. 11596 11597Added a sleep simulation command to the AML debugger to test sleep code. 11598 11599Code and Data Size: Current and previous core subsystem library sizes are 11600shown below. These are the code and data sizes for the acpica.lib 11601produced 11602by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11603any ACPI driver or OSPM code. The debug version of the code includes the 11604debug output trace mechanism and has a much larger code and data size. 11605Note 11606that these values will vary depending on the efficiency of the compiler 11607and 11608the compiler options used during generation. 11609 11610 Previous Release: 11611 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11612 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11613 Current Release: 11614 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11615 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 11616 11617---------------------------------------- 1161827 April 2004. Summary of changes for version 20040427: 11619 116201) ACPI CA Core Subsystem: 11621 11622Completed a major overhaul of the GPE handling within ACPI CA. There are 11623now three types of GPEs: wake-only, runtime-only, and combination 11624wake/run. 11625The only GPEs allowed to be combination wake/run are for button-style 11626devices such as a control-method power button, control-method sleep 11627button, 11628or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are 11629not 11630referenced by any _PRW methods are marked for "runtime" and hardware 11631enabled. Any GPE that is referenced by a _PRW method is marked for 11632"wake" 11633(and disabled at runtime). However, at sleep time, only those GPEs that 11634have been specifically enabled for wake via the AcpiEnableGpe interface 11635will 11636actually be hardware enabled. 11637 11638A new external interface has been added, AcpiSetGpeType(), that is meant 11639to 11640be used by device drivers to force a GPE to a particular type. It will 11641be 11642especially useful for the drivers for the button devices mentioned above. 11643 11644Completed restructuring of the ACPI CA initialization sequence so that 11645default operation region handlers are installed before GPEs are 11646initialized 11647and the _PRW methods are executed. This will prevent errors when the 11648_PRW 11649methods attempt to access system memory or I/O space. 11650 11651GPE enable/disable no longer reads the GPE enable register. We now keep 11652the 11653enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 11654thus no longer depend on the hardware to maintain these bits. 11655 11656Always clear the wake status and fixed/GPE status bits before sleep, even 11657for state S5. 11658 11659Improved the AML debugger output for displaying the GPE blocks and their 11660current status. 11661 11662Added new strings for the _OSI method, of the form "Windows 2001 SPx" 11663where 11664x = 0,1,2,3,4. 11665 11666Fixed a problem where the physical address was incorrectly calculated 11667when 11668the Load() operator was used to directly load from an Operation Region 11669(vs. 11670loading from a Field object.) Also added check for minimum table length 11671for 11672this case. 11673 11674Fix for multiple mutex acquisition. Restore original thread SyncLevel on 11675mutex release. 11676 11677Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 11678consistency with the other fields returned. 11679 11680Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 11681structure for each GPE in the system, so the size of this structure is 11682important. 11683 11684CPU stack requirement reduction: Cleaned up the method execution and 11685object 11686evaluation paths so that now a parameter structure is passed, instead of 11687copying the various method parameters over and over again. 11688 11689In evregion.c: Correctly exit and reenter the interpreter region if and 11690only if dispatching an operation region request to a user-installed 11691handler. 11692Do not exit/reenter when dispatching to a default handler (e.g., default 11693system memory or I/O handlers) 11694 11695 11696Notes for updating drivers for the new GPE support. The following 11697changes 11698must be made to ACPI-related device drivers that are attached to one or 11699more 11700GPEs: (This information will be added to the ACPI CA Programmer 11701Reference.) 11702 117031) AcpiInstallGpeHandler no longer automatically enables the GPE, you 11704must 11705explicitly call AcpiEnableGpe. 117062) There is a new interface called AcpiSetGpeType. This should be called 11707before enabling the GPE. Also, this interface will automatically disable 11708the GPE if it is currently enabled. 117093) AcpiEnableGpe no longer supports a GPE type flag. 11710 11711Specific drivers that must be changed: 117121) EC driver: 11713 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 11714AeGpeHandler, NULL); 11715 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 11716 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 11717 117182) Button Drivers (Power, Lid, Sleep): 11719Run _PRW method under parent device 11720If _PRW exists: /* This is a control-method button */ 11721 Extract GPE number and possibly GpeDevice 11722 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 11723 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 11724 11725For all other devices that have _PRWs, we automatically set the GPE type 11726to 11727ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. 11728This 11729must be done on a selective basis, usually requiring some kind of user 11730app 11731to allow the user to pick the wake devices. 11732 11733 11734Code and Data Size: Current and previous core subsystem library sizes are 11735shown below. These are the code and data sizes for the acpica.lib 11736produced 11737by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11738any ACPI driver or OSPM code. The debug version of the code includes the 11739debug output trace mechanism and has a much larger code and data size. 11740Note 11741that these values will vary depending on the efficiency of the compiler 11742and 11743the compiler options used during generation. 11744 11745 Previous Release: 11746 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11747 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11748 Current Release: 11749 11750 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 11751 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 11752 11753 11754 11755---------------------------------------- 1175602 April 2004. Summary of changes for version 20040402: 11757 117581) ACPI CA Core Subsystem: 11759 11760Fixed an interpreter problem where an indirect store through an ArgX 11761parameter was incorrectly applying the "implicit conversion rules" during 11762the store. From the ACPI specification: "If the target is a method local 11763or 11764argument (LocalX or ArgX), no conversion is performed and the result is 11765stored directly to the target". The new behavior is to disable implicit 11766conversion during ALL stores to an ArgX. 11767 11768Changed the behavior of the _PRW method scan to ignore any and all errors 11769returned by a given _PRW. This prevents the scan from aborting from the 11770failure of any single _PRW. 11771 11772Moved the runtime configuration parameters from the global init procedure 11773to 11774static variables in acglobal.h. This will allow the host to override the 11775default values easily. 11776 11777Code and Data Size: Current and previous core subsystem library sizes are 11778shown below. These are the code and data sizes for the acpica.lib 11779produced 11780by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11781any ACPI driver or OSPM code. The debug version of the code includes the 11782debug output trace mechanism and has a much larger code and data size. 11783Note 11784that these values will vary depending on the efficiency of the compiler 11785and 11786the compiler options used during generation. 11787 11788 Previous Release: 11789 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11790 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11791 Current Release: 11792 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 11793 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 11794 11795 117962) iASL Compiler/Disassembler: 11797 11798iASL now fully disassembles SSDTs. However, External() statements are 11799not 11800generated automatically for unresolved symbols at this time. This is a 11801planned feature for future implementation. 11802 11803Fixed a scoping problem in the disassembler that occurs when the type of 11804the 11805target of a Scope() operator is overridden. This problem caused an 11806incorrectly nested internal namespace to be constructed. 11807 11808Any warnings or errors that are emitted during disassembly are now 11809commented 11810out automatically so that the resulting file can be recompiled without 11811any 11812hand editing. 11813 11814---------------------------------------- 1181526 March 2004. Summary of changes for version 20040326: 11816 118171) ACPI CA Core Subsystem: 11818 11819Implemented support for "wake" GPEs via interaction between GPEs and the 11820_PRW methods. Every GPE that is pointed to by one or more _PRWs is 11821identified as a WAKE GPE and by default will no longer be enabled at 11822runtime. Previously, we were blindly enabling all GPEs with a 11823corresponding 11824_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. 11825We 11826believe this has been the cause of thousands of "spurious" GPEs on some 11827systems. 11828 11829This new GPE behavior is can be reverted to the original behavior (enable 11830ALL GPEs at runtime) via a runtime flag. 11831 11832Fixed a problem where aliased control methods could not access objects 11833properly. The proper scope within the namespace was not initialized 11834(transferred to the target of the aliased method) before executing the 11835target method. 11836 11837Fixed a potential race condition on internal object deletion on the 11838return 11839object in AcpiEvaluateObject. 11840 11841Integrated a fix for resource descriptors where both _MEM and _MTP were 11842being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 11843wide, 0x0F instead of 0x03.) 11844 11845Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, 11846preventing 11847a 11848fault in some cases. 11849 11850Updated Notify() values for debug statements in evmisc.c 11851 11852Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 11853 11854Code and Data Size: Current and previous core subsystem library sizes are 11855shown below. These are the code and data sizes for the acpica.lib 11856produced 11857by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11858any ACPI driver or OSPM code. The debug version of the code includes the 11859debug output trace mechanism and has a much larger code and data size. 11860Note 11861that these values will vary depending on the efficiency of the compiler 11862and 11863the compiler options used during generation. 11864 11865 Previous Release: 11866 11867 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11868 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11869 Current Release: 11870 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 11871 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 11872 11873---------------------------------------- 1187411 March 2004. Summary of changes for version 20040311: 11875 118761) ACPI CA Core Subsystem: 11877 11878Fixed a problem where errors occurring during the parse phase of control 11879method execution did not abort cleanly. For example, objects created and 11880installed in the namespace were not deleted. This caused all subsequent 11881invocations of the method to return the AE_ALREADY_EXISTS exception. 11882 11883Implemented a mechanism to force a control method to "Serialized" 11884execution 11885if the method attempts to create namespace objects. (The root of the 11886AE_ALREADY_EXISTS problem.) 11887 11888Implemented support for the predefined _OSI "internal" control method. 11889Initial supported strings are "Linux", "Windows 2000", "Windows 2001", 11890and 11891"Windows 2001.1", and can be easily upgraded for new strings as 11892necessary. 11893This feature will allow "other" operating systems to execute the fully 11894tested, "Windows" code path through the ASL code 11895 11896Global Lock Support: Now allows multiple acquires and releases with any 11897internal thread. Removed concept of "owning thread" for this special 11898mutex. 11899 11900Fixed two functions that were inappropriately declaring large objects on 11901the 11902CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage 11903during 11904method execution considerably. 11905 11906Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 11907S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 11908 11909Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 11910defined on the machine. 11911 11912Implemented two runtime options: One to force all control method 11913execution 11914to "Serialized" to mimic Windows behavior, another to disable _OSI 11915support 11916if it causes problems on a given machine. 11917 11918Code and Data Size: Current and previous core subsystem library sizes are 11919shown below. These are the code and data sizes for the acpica.lib 11920produced 11921by the Microsoft Visual C++ 6.0 compiler, and these values do not include 11922any ACPI driver or OSPM code. The debug version of the code includes the 11923debug output trace mechanism and has a much larger code and data size. 11924Note 11925that these values will vary depending on the efficiency of the compiler 11926and 11927the compiler options used during generation. 11928 11929 Previous Release: 11930 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 11931 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 11932 Current Release: 11933 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 11934 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 11935 119362) iASL Compiler/Disassembler: 11937 11938Fixed an array size problem for FreeBSD that would cause the compiler to 11939fault. 11940 11941---------------------------------------- 1194220 February 2004. Summary of changes for version 20040220: 11943 11944 119451) ACPI CA Core Subsystem: 11946 11947Implemented execution of _SxD methods for Device objects in the 11948GetObjectInfo interface. 11949 11950Fixed calls to _SST method to pass the correct arguments. 11951 11952Added a call to _SST on wake to restore to "working" state. 11953 11954Check for End-Of-Buffer failure case in the WalkResources interface. 11955 11956Integrated fix for 64-bit alignment issue in acglobal.h by moving two 11957structures to the beginning of the file. 11958 11959After wake, clear GPE status register(s) before enabling GPEs. 11960 11961After wake, clear/enable power button. (Perhaps we should clear/enable 11962all 11963fixed events upon wake.) 11964 11965Fixed a couple of possible memory leaks in the Namespace manager. 11966 11967Integrated latest acnetbsd.h file. 11968 11969---------------------------------------- 1197011 February 2004. Summary of changes for version 20040211: 11971 11972 119731) ACPI CA Core Subsystem: 11974 11975Completed investigation and implementation of the call-by-reference 11976mechanism for control method arguments. 11977 11978Fixed a problem where a store of an object into an indexed package could 11979fail if the store occurs within a different method than the method that 11980created the package. 11981 11982Fixed a problem where the ToDecimal operator could return incorrect 11983results. 11984 11985Fixed a problem where the CopyObject operator could fail on some of the 11986more 11987obscure objects (e.g., Reference objects.) 11988 11989Improved the output of the Debug object to display buffer, package, and 11990index objects. 11991 11992Fixed a problem where constructs of the form "RefOf (ArgX)" did not 11993return 11994the expected result. 11995 11996Added permanent ACPI_REPORT_ERROR macros for all instances of the 11997ACPI_AML_INTERNAL exception. 11998 11999Integrated latest version of acfreebsd.h 12000 12001---------------------------------------- 1200216 January 2004. Summary of changes for version 20040116: 12003 12004The purpose of this release is primarily to update the copyright years in 12005each module, thus causing a huge number of diffs. There are a few small 12006functional changes, however. 12007 120081) ACPI CA Core Subsystem: 12009 12010Improved error messages when there is a problem finding one or more of 12011the 12012required base ACPI tables 12013 12014Reintroduced the definition of APIC_HEADER in actbl.h 12015 12016Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 12017 12018Removed extraneous reference to NewObj in dsmthdat.c 12019 120202) iASL compiler 12021 12022Fixed a problem introduced in December that disabled the correct 12023disassembly 12024of Resource Templates 12025 12026 12027---------------------------------------- 1202803 December 2003. Summary of changes for version 20031203: 12029 120301) ACPI CA Core Subsystem: 12031 12032Changed the initialization of Operation Regions during subsystem 12033init to perform two entire walks of the ACPI namespace; The first 12034to initialize the regions themselves, the second to execute the 12035_REG methods. This fixed some interdependencies across _REG 12036methods found on some machines. 12037 12038Fixed a problem where a Store(Local0, Local1) could simply update 12039the object reference count, and not create a new copy of the 12040object if the Local1 is uninitialized. 12041 12042Implemented support for the _SST reserved method during sleep 12043transitions. 12044 12045Implemented support to clear the SLP_TYP and SLP_EN bits when 12046waking up, this is apparently required by some machines. 12047 12048When sleeping, clear the wake status only if SleepState is not S5. 12049 12050Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 12051pointer arithmetic advanced a string pointer too far. 12052 12053Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 12054could be returned if the requested table has not been loaded. 12055 12056Within the support for IRQ resources, restructured the handling of 12057the active and edge/level bits. 12058 12059Fixed a few problems in AcpiPsxExecute() where memory could be 12060leaked under certain error conditions. 12061 12062Improved error messages for the cases where the ACPI mode could 12063not be entered. 12064 12065Code and Data Size: Current and previous core subsystem library 12066sizes are shown below. These are the code and data sizes for the 12067acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12068these values do not include any ACPI driver or OSPM code. The 12069debug version of the code includes the debug output trace 12070mechanism and has a much larger code and data size. Note that 12071these values will vary depending on the efficiency of the compiler 12072and the compiler options used during generation. 12073 12074 Previous Release (20031029): 12075 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12076 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12077 Current Release: 12078 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 12079 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 12080 120812) iASL Compiler/Disassembler: 12082 12083Implemented a fix for the iASL disassembler where a bad index was 12084generated. This was most noticeable on 64-bit platforms 12085 12086 12087---------------------------------------- 1208829 October 2003. Summary of changes for version 20031029: 12089 120901) ACPI CA Core Subsystem: 12091 12092 12093Fixed a problem where a level-triggered GPE with an associated 12094_Lxx control method was incorrectly cleared twice. 12095 12096Fixed a problem with the Field support code where an access can 12097occur beyond the end-of-region if the field is non-aligned but 12098extends to the very end of the parent region (resulted in an 12099AE_AML_REGION_LIMIT exception.) 12100 12101Fixed a problem with ACPI Fixed Events where an RT Clock handler 12102would not get invoked on an RTC event. The RTC event bitmasks for 12103the PM1 registers were not being initialized properly. 12104 12105Implemented support for executing _STA and _INI methods for 12106Processor objects. Although this is currently not part of the 12107ACPI specification, there is existing ASL code that depends on the 12108init-time execution of these methods. 12109 12110Implemented and deployed a GetDescriptorName function to decode 12111the various types of internal descriptors. Guards against null 12112descriptors during debug output also. 12113 12114Implemented and deployed a GetNodeName function to extract the 4- 12115character namespace node name. This function simplifies the debug 12116and error output, as well as guarding against null pointers during 12117output. 12118 12119Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 12120simplify the debug and error output of 64-bit integers. This 12121macro replaces the HIDWORD and LODWORD macros for dumping these 12122integers. 12123 12124Updated the implementation of the Stall() operator to only call 12125AcpiOsStall(), and also return an error if the operand is larger 12126than 255. This preserves the required behavior of not 12127relinquishing the processor, as would happen if AcpiOsSleep() was 12128called for "long stalls". 12129 12130Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 12131initialized are now treated as NOOPs. 12132 12133Cleaned up a handful of warnings during 64-bit generation. 12134 12135Fixed a reported error where and incorrect GPE number was passed 12136to the GPE dispatch handler. This value is only used for error 12137output, however. Used this opportunity to clean up and streamline 12138the GPE dispatch code. 12139 12140Code and Data Size: Current and previous core subsystem library 12141sizes are shown below. These are the code and data sizes for the 12142acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12143these values do not include any ACPI driver or OSPM code. The 12144 12145debug version of the code includes the debug output trace 12146mechanism and has a much larger code and data size. Note that 12147these values will vary depending on the efficiency of the compiler 12148and the compiler options used during generation. 12149 12150 Previous Release (20031002): 12151 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12152 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12153 Current Release: 12154 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 12155 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 12156 12157 121582) iASL Compiler/Disassembler: 12159 12160Updated the iASL compiler to return an error if the operand to the 12161Stall() operator is larger than 255. 12162 12163 12164---------------------------------------- 1216502 October 2003. Summary of changes for version 20031002: 12166 12167 121681) ACPI CA Core Subsystem: 12169 12170Fixed a problem with Index Fields where the index was not 12171incremented for fields that require multiple writes to the 12172index/data registers (Fields that are wider than the data 12173register.) 12174 12175Fixed a problem with all Field objects where a write could go 12176beyond the end-of-field if the field was larger than the access 12177granularity and therefore required multiple writes to complete the 12178request. An extra write beyond the end of the field could happen 12179inadvertently. 12180 12181Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 12182would incorrectly be returned if the width of the Data Register 12183was larger than the specified field access width. 12184 12185Completed fixes for LoadTable() and Unload() and verified their 12186operation. Implemented full support for the "DdbHandle" object 12187throughout the ACPI CA subsystem. 12188 12189Implemented full support for the MADT and ECDT tables in the ACPI 12190CA header files. Even though these tables are not directly 12191consumed by ACPI CA, the header definitions are useful for ACPI 12192device drivers. 12193 12194Integrated resource descriptor fixes posted to the Linux ACPI 12195list. This included checks for minimum descriptor length, and 12196support for trailing NULL strings within descriptors that have 12197optional string elements. 12198 12199Code and Data Size: Current and previous core subsystem library 12200sizes are shown below. These are the code and data sizes for the 12201acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12202these values do not include any ACPI driver or OSPM code. The 12203debug version of the code includes the debug output trace 12204mechanism and has a much larger code and data size. Note that 12205these values will vary depending on the efficiency of the compiler 12206and the compiler options used during generation. 12207 12208 Previous Release (20030918): 12209 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12210 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12211 Current Release: 12212 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 12213 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 12214 12215 122162) iASL Compiler: 12217 12218Implemented detection of non-ASCII characters within the input 12219source ASL file. This catches attempts to compile binary (AML) 12220files early in the compile, with an informative error message. 12221 12222Fixed a problem where the disassembler would fault if the output 12223filename could not be generated or if the output file could not be 12224opened. 12225 12226---------------------------------------- 1222718 September 2003. Summary of changes for version 20030918: 12228 12229 122301) ACPI CA Core Subsystem: 12231 12232Found and fixed a longstanding problem with the late execution of 12233the various deferred AML opcodes (such as Operation Regions, 12234Buffer Fields, Buffers, and Packages). If the name string 12235specified for the name of the new object placed the object in a 12236scope other than the current scope, the initialization/execution 12237of the opcode failed. The solution to this problem was to 12238implement a mechanism where the late execution of such opcodes 12239does not attempt to lookup/create the name a second time in an 12240incorrect scope. This fixes the "region size computed 12241incorrectly" problem. 12242 12243Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 12244Global Lock AE_BAD_PARAMETER error. 12245 12246Fixed several 64-bit issues with prototypes, casting and data 12247types. 12248 12249Removed duplicate prototype from acdisasm.h 12250 12251Fixed an issue involving EC Operation Region Detach (Shaohua Li) 12252 12253Code and Data Size: Current and previous core subsystem library 12254sizes are shown below. These are the code and data sizes for the 12255acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12256these values do not include any ACPI driver or OSPM code. The 12257debug version of the code includes the debug output trace 12258mechanism and has a much larger code and data size. Note that 12259these values will vary depending on the efficiency of the compiler 12260and the compiler options used during generation. 12261 12262 Previous Release: 12263 12264 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12265 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12266 Current Release: 12267 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 12268 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 12269 12270 122712) Linux: 12272 12273Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 12274correct sleep time in seconds. 12275 12276---------------------------------------- 1227714 July 2003. Summary of changes for version 20030619: 12278 122791) ACPI CA Core Subsystem: 12280 12281Parse SSDTs in order discovered, as opposed to reverse order 12282(Hrvoje Habjanic) 12283 12284Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 12285Klausner, 12286 Nate Lawson) 12287 12288 122892) Linux: 12290 12291Dynamically allocate SDT list (suggested by Andi Kleen) 12292 12293proc function return value cleanups (Andi Kleen) 12294 12295Correctly handle NMI watchdog during long stalls (Andrew Morton) 12296 12297Make it so acpismp=force works (reported by Andrew Morton) 12298 12299 12300---------------------------------------- 1230119 June 2003. Summary of changes for version 20030619: 12302 123031) ACPI CA Core Subsystem: 12304 12305Fix To/FromBCD, eliminating the need for an arch-specific #define. 12306 12307Do not acquire a semaphore in the S5 shutdown path. 12308 12309Fix ex_digits_needed for 0. (Takayoshi Kochi) 12310 12311Fix sleep/stall code reversal. (Andi Kleen) 12312 12313Revert a change having to do with control method calling 12314semantics. 12315 123162) Linux: 12317 12318acpiphp update (Takayoshi Kochi) 12319 12320Export acpi_disabled for sonypi (Stelian Pop) 12321 12322Mention acpismp=force in config help 12323 12324Re-add acpitable.c and acpismp=force. This improves backwards 12325 12326compatibility and also cleans up the code to a significant degree. 12327 12328Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 12329 12330---------------------------------------- 1233122 May 2003. Summary of changes for version 20030522: 12332 123331) ACPI CA Core Subsystem: 12334 12335Found and fixed a reported problem where an AE_NOT_FOUND error 12336occurred occasionally during _BST evaluation. This turned out to 12337be an Owner ID allocation issue where a called method did not get 12338a new ID assigned to it. Eventually, (after 64k calls), the Owner 12339ID UINT16 would wraparound so that the ID would be the same as the 12340caller's and the called method would delete the caller's 12341namespace. 12342 12343Implemented extended error reporting for control methods that are 12344aborted due to a run-time exception. Output includes the exact 12345AML instruction that caused the method abort, a dump of the method 12346locals and arguments at the time of the abort, and a trace of all 12347nested control method calls. 12348 12349Modified the interpreter to allow the creation of buffers of zero 12350length from the AML code. Implemented new code to ensure that no 12351attempt is made to actually allocate a memory buffer (of length 12352zero) - instead, a simple buffer object with a NULL buffer pointer 12353and length zero is created. A warning is no longer issued when 12354the AML attempts to create a zero-length buffer. 12355 12356Implemented a workaround for the "leading asterisk issue" in 12357_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 12358asterisk is automatically removed if present in any HID, UID, or 12359CID strings. The iASL compiler will still flag this asterisk as 12360an error, however. 12361 12362Implemented full support for _CID methods that return a package of 12363multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 12364now additionally returns a device _CID list if present. This 12365required a change to the external interface in order to pass an 12366ACPI_BUFFER object as a parameter since the _CID list is of 12367variable length. 12368 12369Fixed a problem with the new AE_SAME_HANDLER exception where 12370handler initialization code did not know about this exception. 12371 12372Code and Data Size: Current and previous core subsystem library 12373sizes are shown below. These are the code and data sizes for the 12374acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 12375these values do not include any ACPI driver or OSPM code. The 12376debug version of the code includes the debug output trace 12377mechanism and has a much larger code and data size. Note that 12378these values will vary depending on the efficiency of the compiler 12379and the compiler options used during generation. 12380 12381 Previous Release (20030509): 12382 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12383 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12384 Current Release: 12385 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 12386 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 12387 12388 123892) Linux: 12390 12391Fixed a bug in which we would reinitialize the ACPI interrupt 12392after it was already working, thus disabling all ACPI and the IRQs 12393for any other device sharing the interrupt. (Thanks to Stian 12394Jordet) 12395 12396Toshiba driver update (John Belmonte) 12397 12398Return only 0 or 1 for our interrupt handler status (Andrew 12399Morton) 12400 12401 124023) iASL Compiler: 12403 12404Fixed a reported problem where multiple (nested) ElseIf() 12405statements were not handled correctly by the compiler, resulting 12406in incorrect warnings and incorrect AML code. This was a problem 12407in both the ASL parser and the code generator. 12408 12409 124104) Documentation: 12411 12412Added changes to existing interfaces, new exception codes, and new 12413text concerning reference count object management versus garbage 12414collection. 12415 12416---------------------------------------- 1241709 May 2003. Summary of changes for version 20030509. 12418 12419 124201) ACPI CA Core Subsystem: 12421 12422Changed the subsystem initialization sequence to hold off 12423installation of address space handlers until the hardware has been 12424initialized and the system has entered ACPI mode. This is because 12425the installation of space handlers can cause _REG methods to be 12426run. Previously, the _REG methods could potentially be run before 12427ACPI mode was enabled. 12428 12429Fixed some memory leak issues related to address space handler and 12430notify handler installation. There were some problems with the 12431reference count mechanism caused by the fact that the handler 12432objects are shared across several namespace objects. 12433 12434Fixed a reported problem where reference counts within the 12435namespace were not properly updated when named objects created by 12436method execution were deleted. 12437 12438Fixed a reported problem where multiple SSDTs caused a deletion 12439issue during subsystem termination. Restructured the table data 12440structures to simplify the linked lists and the related code. 12441 12442Fixed a problem where the table ID associated with secondary 12443tables (SSDTs) was not being propagated into the namespace objects 12444created by those tables. This would only present a problem for 12445tables that are unloaded at run-time, however. 12446 12447Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 12448type as the length parameter (instead of UINT32). 12449 12450Solved a long-standing problem where an ALREADY_EXISTS error 12451appears on various systems. This problem could happen when there 12452are multiple PCI_Config operation regions under a single PCI root 12453bus. This doesn't happen very frequently, but there are some 12454systems that do this in the ASL. 12455 12456Fixed a reported problem where the internal DeleteNode function 12457was incorrectly handling the case where a namespace node was the 12458first in the parent's child list, and had additional peers (not 12459the only child, but first in the list of children.) 12460 12461Code and Data Size: Current core subsystem library sizes are shown 12462below. These are the code and data sizes for the acpica.lib 12463produced by the Microsoft Visual C++ 6.0 compiler, and these 12464values do not include any ACPI driver or OSPM code. The debug 12465version of the code includes the debug output trace mechanism and 12466has a much larger code and data size. Note that these values will 12467vary depending on the efficiency of the compiler and the compiler 12468options used during generation. 12469 12470 Previous Release 12471 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12472 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12473 Current Release: 12474 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 12475 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 12476 12477 124782) Linux: 12479 12480Allow ":" in OS override string (Ducrot Bruno) 12481 12482Kobject fix (Greg KH) 12483 12484 124853 iASL Compiler/Disassembler: 12486 12487Fixed a problem in the generation of the C source code files (AML 12488is emitted in C source statements for BIOS inclusion) where the 12489Ascii dump that appears within a C comment at the end of each line 12490could cause a compile time error if the AML sequence happens to 12491have an open comment or close comment sequence embedded. 12492 12493 12494---------------------------------------- 1249524 April 2003. Summary of changes for version 20030424. 12496 12497 124981) ACPI CA Core Subsystem: 12499 12500Support for big-endian systems has been implemented. Most of the 12501support has been invisibly added behind big-endian versions of the 12502ACPI_MOVE_* macros. 12503 12504Fixed a problem in AcpiHwDisableGpeBlock() and 12505AcpiHwClearGpeBlock() where an incorrect offset was passed to the 12506low level hardware write routine. The offset parameter was 12507actually eliminated from the low level read/write routines because 12508they had become obsolete. 12509 12510Fixed a problem where a handler object was deleted twice during 12511the removal of a fixed event handler. 12512 12513 125142) Linux: 12515 12516A fix for SMP systems with link devices was contributed by 12517 12518Compaq's Dan Zink. 12519 12520(2.5) Return whether we handled the interrupt in our IRQ handler. 12521(Linux ISRs no longer return void, so we can propagate the handler 12522return value from the ACPI CA core back to the OS.) 12523 12524 12525 125263) Documentation: 12527 12528The ACPI CA Programmer Reference has been updated to reflect new 12529interfaces and changes to existing interfaces. 12530 12531---------------------------------------- 1253228 March 2003. Summary of changes for version 20030328. 12533 125341) ACPI CA Core Subsystem: 12535 12536The GPE Block Device support has been completed. New interfaces 12537are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 12538interfaces (enable, disable, clear, getstatus) have been split 12539into separate interfaces for Fixed Events and General Purpose 12540Events (GPEs) in order to support GPE Block Devices properly. 12541 12542Fixed a problem where the error message "Failed to acquire 12543semaphore" would appear during operations on the embedded 12544controller (EC). 12545 12546Code and Data Size: Current core subsystem library sizes are shown 12547below. These are the code and data sizes for the acpica.lib 12548produced by the Microsoft Visual C++ 6.0 compiler, and these 12549values do not include any ACPI driver or OSPM code. The debug 12550version of the code includes the debug output trace mechanism and 12551has a much larger code and data size. Note that these values will 12552vary depending on the efficiency of the compiler and the compiler 12553options used during generation. 12554 12555 Previous Release 12556 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12557 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12558 Current Release: 12559 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 12560 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 12561 12562 12563---------------------------------------- 1256428 February 2003. Summary of changes for version 20030228. 12565 12566 125671) ACPI CA Core Subsystem: 12568 12569The GPE handling and dispatch code has been completely overhauled 12570in preparation for support of GPE Block Devices (ID ACPI0006). 12571This affects internal data structures and code only; there should 12572be no differences visible externally. One new file has been 12573added, evgpeblk.c 12574 12575The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 12576fields that are used to determine the GPE block lengths. The 12577REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 12578structures are ignored. This is per the ACPI specification but it 12579isn't very clear. The full 256 Block 0/1 GPEs are now supported 12580(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 12581 12582In the SCI interrupt handler, removed the read of the PM1_CONTROL 12583register to look at the SCI_EN bit. On some machines, this read 12584causes an SMI event and greatly slows down SCI events. (This may 12585in fact be the cause of slow battery status response on some 12586systems.) 12587 12588Fixed a problem where a store of a NULL string to a package object 12589could cause the premature deletion of the object. This was seen 12590during execution of the battery _BIF method on some systems, 12591resulting in no battery data being returned. 12592 12593Added AcpiWalkResources interface to simplify parsing of resource 12594lists. 12595 12596Code and Data Size: Current core subsystem library sizes are shown 12597below. These are the code and data sizes for the acpica.lib 12598produced by the Microsoft Visual C++ 6.0 compiler, and these 12599values do not include any ACPI driver or OSPM code. The debug 12600version of the code includes the debug output trace mechanism and 12601has a much larger code and data size. Note that these values will 12602vary depending on the efficiency of the compiler and the compiler 12603options used during generation. 12604 12605 Previous Release 12606 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12607 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12608 Current Release: 12609 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 12610 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 12611 12612 126132) Linux 12614 12615S3 fixes (Ole Rohne) 12616 12617Update ACPI PHP driver with to use new acpi_walk_resource API 12618(Bjorn Helgaas) 12619 12620Add S4BIOS support (Pavel Machek) 12621 12622Map in entire table before performing checksum (John Stultz) 12623 12624Expand the mem= cmdline to allow the specification of reserved and 12625ACPI DATA blocks (Pavel Machek) 12626 12627Never use ACPI on VISWS 12628 12629Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 12630 12631Revert a change that allowed P_BLK lengths to be 4 or 5. This is 12632causing us to think that some systems support C2 when they really 12633don't. 12634 12635Do not count processor objects for non-present CPUs (Thanks to 12636Dominik Brodowski) 12637 12638 126393) iASL Compiler: 12640 12641Fixed a problem where ASL include files could not be found and 12642opened. 12643 12644Added support for the _PDC reserved name. 12645 12646 12647---------------------------------------- 1264822 January 2003. Summary of changes for version 20030122. 12649 12650 126511) ACPI CA Core Subsystem: 12652 12653Added a check for constructs of the form: Store (Local0, Local0) 12654where Local0 is not initialized. Apparently, some BIOS 12655programmers believe that this is a NOOP. Since this store doesn't 12656do anything anyway, the new prototype behavior will ignore this 12657error. This is a case where we can relax the strict checking in 12658the interpreter in the name of compatibility. 12659 12660 126612) Linux 12662 12663The AcpiSrc Source Conversion Utility has been released with the 12664Linux package for the first time. This is the utility that is 12665used to convert the ACPI CA base source code to the Linux version. 12666 12667(Both) Handle P_BLK lengths shorter than 6 more gracefully 12668 12669(Both) Move more headers to include/acpi, and delete an unused 12670header. 12671 12672(Both) Move drivers/acpi/include directory to include/acpi 12673 12674(Both) Boot functions don't use cmdline, so don't pass it around 12675 12676(Both) Remove include of unused header (Adrian Bunk) 12677 12678(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 12679the 12680former now also includes the latter, acpiphp.h only needs the one, 12681now. 12682 12683(2.5) Make it possible to select method of bios restoring after S3 12684resume. [=> no more ugly ifdefs] (Pavel Machek) 12685 12686(2.5) Make proc write interfaces work (Pavel Machek) 12687 12688(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 12689 12690(2.5) Break out ACPI Perf code into its own module, under cpufreq 12691(Dominik Brodowski) 12692 12693(2.4) S4BIOS support (Ducrot Bruno) 12694 12695(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 12696Visinoni) 12697 12698 126993) iASL Compiler: 12700 12701Added support to disassemble SSDT and PSDTs. 12702 12703Implemented support to obtain SSDTs from the Windows registry if 12704available. 12705 12706 12707---------------------------------------- 1270809 January 2003. Summary of changes for version 20030109. 12709 127101) ACPI CA Core Subsystem: 12711 12712Changed the behavior of the internal Buffer-to-String conversion 12713function. The current ACPI specification states that the contents 12714of the buffer are "converted to a string of two-character 12715hexadecimal numbers, each separated by a space". Unfortunately, 12716this definition is not backwards compatible with existing ACPI 1.0 12717implementations (although the behavior was not defined in the ACPI 127181.0 specification). The new behavior simply copies data from the 12719buffer to the string until a null character is found or the end of 12720the buffer is reached. The new String object is always null 12721terminated. This problem was seen during the generation of _BIF 12722battery data where incorrect strings were returned for battery 12723type, etc. This will also require an errata to the ACPI 12724specification. 12725 12726Renamed all instances of NATIVE_UINT and NATIVE_INT to 12727ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 12728 12729Copyright in all module headers (both Linux and non-Linux) has be 12730updated to 2003. 12731 12732Code and Data Size: Current core subsystem library sizes are shown 12733below. These are the code and data sizes for the acpica.lib 12734produced by the Microsoft Visual C++ 6.0 compiler, and these 12735values do not include any ACPI driver or OSPM code. The debug 12736version of the code includes the debug output trace mechanism and 12737has a much larger code and data size. Note that these values will 12738vary depending on the efficiency of the compiler and the compiler 12739options used during generation. 12740 12741 Previous Release 12742 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12743 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12744 Current Release: 12745 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12746 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12747 12748 127492) Linux 12750 12751Fixed an oops on module insertion/removal (Matthew Tippett) 12752 12753(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 12754 12755(2.5) Replace pr_debug (Randy Dunlap) 12756 12757(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 12758 12759(Both) Eliminate spawning of thread from timer callback, in favor 12760of schedule_work() 12761 12762(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 12763 12764(Both) Added define for Fixed Function HW region (Matthew Wilcox) 12765 12766(Both) Add missing statics to button.c (Pavel Machek) 12767 12768Several changes have been made to the source code translation 12769utility that generates the Linux Code in order to make the code 12770more "Linux-like": 12771 12772All typedefs on structs and unions have been removed in keeping 12773with the Linux coding style. 12774 12775Removed the non-Linux SourceSafe module revision number from each 12776module header. 12777 12778Completed major overhaul of symbols to be lowercased for linux. 12779Doubled the number of symbols that are lowercased. 12780 12781Fixed a problem where identifiers within procedure headers and 12782within quotes were not fully lower cased (they were left with a 12783starting capital.) 12784 12785Some C macros whose only purpose is to allow the generation of 16- 12786bit code are now completely removed in the Linux code, increasing 12787readability and maintainability. 12788 12789---------------------------------------- 12790 1279112 December 2002. Summary of changes for version 20021212. 12792 12793 127941) ACPI CA Core Subsystem: 12795 12796Fixed a problem where the creation of a zero-length AML Buffer 12797would cause a fault. 12798 12799Fixed a problem where a Buffer object that pointed to a static AML 12800buffer (in an ACPI table) could inadvertently be deleted, causing 12801memory corruption. 12802 12803Fixed a problem where a user buffer (passed in to the external 12804ACPI CA interfaces) could be overwritten if the buffer was too 12805small to complete the operation, causing memory corruption. 12806 12807Fixed a problem in the Buffer-to-String conversion code where a 12808string of length one was always returned, regardless of the size 12809of the input Buffer object. 12810 12811Removed the NATIVE_CHAR data type across the entire source due to 12812lack of need and lack of consistent use. 12813 12814Code and Data Size: Current core subsystem library sizes are shown 12815below. These are the code and data sizes for the acpica.lib 12816produced by the Microsoft Visual C++ 6.0 compiler, and these 12817values do not include any ACPI driver or OSPM code. The debug 12818version of the code includes the debug output trace mechanism and 12819has a much larger code and data size. Note that these values will 12820vary depending on the efficiency of the compiler and the compiler 12821options used during generation. 12822 12823 Previous Release 12824 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12825 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12826 Current Release: 12827 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 12828 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 12829 12830 12831---------------------------------------- 1283205 December 2002. Summary of changes for version 20021205. 12833 128341) ACPI CA Core Subsystem: 12835 12836Fixed a problem where a store to a String or Buffer object could 12837cause corruption of the DSDT if the object type being stored was 12838the same as the target object type and the length of the object 12839being stored was equal to or smaller than the original (existing) 12840target object. This was seen to cause corruption of battery _BIF 12841buffers if the _BIF method modified the buffer on the fly. 12842 12843Fixed a problem where an internal error was generated if a control 12844method invocation was used in an OperationRegion, Buffer, or 12845Package declaration. This was caused by the deferred parsing of 12846the control method and thus the deferred creation of the internal 12847method object. The solution to this problem was to create the 12848internal method object at the moment the method is encountered in 12849the first pass - so that subsequent references to the method will 12850able to obtain the required parameter count and thus properly 12851parse the method invocation. This problem presented itself as an 12852AE_AML_INTERNAL during the pass 1 parse phase during table load. 12853 12854Fixed a problem where the internal String object copy routine did 12855not always allocate sufficient memory for the target String object 12856and caused memory corruption. This problem was seen to cause 12857"Allocation already present in list!" errors as memory allocation 12858became corrupted. 12859 12860Implemented a new function for the evaluation of namespace objects 12861that allows the specification of the allowable return object 12862types. This simplifies a lot of code that checks for a return 12863object of one or more specific objects returned from the 12864evaluation (such as _STA, etc.) This may become and external 12865function if it would be useful to ACPI-related drivers. 12866 12867Completed another round of prefixing #defines with "ACPI_" for 12868clarity. 12869 12870Completed additional code restructuring to allow more modular 12871linking for iASL compiler and AcpiExec. Several files were split 12872creating new files. New files: nsparse.c dsinit.c evgpe.c 12873 12874Implemented an abort mechanism to terminate an executing control 12875method via the AML debugger. This feature is useful for debugging 12876control methods that depend (wait) for specific hardware 12877responses. 12878 12879Code and Data Size: Current core subsystem library sizes are shown 12880below. These are the code and data sizes for the acpica.lib 12881produced by the Microsoft Visual C++ 6.0 compiler, and these 12882values do not include any ACPI driver or OSPM code. The debug 12883version of the code includes the debug output trace mechanism and 12884has a much larger code and data size. Note that these values will 12885vary depending on the efficiency of the compiler and the compiler 12886options used during generation. 12887 12888 Previous Release 12889 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12890 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12891 Current Release: 12892 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 12893 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 12894 12895 128962) iASL Compiler/Disassembler 12897 12898Fixed a compiler code generation problem for "Interrupt" Resource 12899Descriptors. If specified in the ASL, the optional "Resource 12900Source Index" and "Resource Source" fields were not inserted into 12901the correct location within the AML resource descriptor, creating 12902an invalid descriptor. 12903 12904Fixed a disassembler problem for "Interrupt" resource descriptors. 12905The optional "Resource Source Index" and "Resource Source" fields 12906were ignored. 12907 12908 12909---------------------------------------- 1291022 November 2002. Summary of changes for version 20021122. 12911 12912 129131) ACPI CA Core Subsystem: 12914 12915Fixed a reported problem where an object stored to a Method Local 12916or Arg was not copied to a new object during the store - the 12917object pointer was simply copied to the Local/Arg. This caused 12918all subsequent operations on the Local/Arg to also affect the 12919original source of the store operation. 12920 12921Fixed a problem where a store operation to a Method Local or Arg 12922was not completed properly if the Local/Arg contained a reference 12923(from RefOf) to a named field. The general-purpose store-to- 12924namespace-node code is now used so that this case is handled 12925automatically. 12926 12927Fixed a problem where the internal object copy routine would cause 12928a protection fault if the object being copied was a Package and 12929contained either 1) a NULL package element or 2) a nested sub- 12930package. 12931 12932Fixed a problem with the GPE initialization that resulted from an 12933ambiguity in the ACPI specification. One section of the 12934specification states that both the address and length of the GPE 12935block must be zero if the block is not supported. Another section 12936implies that only the address need be zero if the block is not 12937supported. The code has been changed so that both the address and 12938the length must be non-zero to indicate a valid GPE block (i.e., 12939if either the address or the length is zero, the GPE block is 12940invalid.) 12941 12942Code and Data Size: Current core subsystem library sizes are shown 12943below. These are the code and data sizes for the acpica.lib 12944produced by the Microsoft Visual C++ 6.0 compiler, and these 12945values do not include any ACPI driver or OSPM code. The debug 12946version of the code includes the debug output trace mechanism and 12947has a much larger code and data size. Note that these values will 12948vary depending on the efficiency of the compiler and the compiler 12949options used during generation. 12950 12951 Previous Release 12952 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 12953 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 12954 Current Release: 12955 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 12956 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 12957 12958 129592) Linux 12960 12961Cleaned up EC driver. Exported an external EC read/write 12962interface. By going through this, other drivers (most notably 12963sonypi) will be able to serialize access to the EC. 12964 12965 129663) iASL Compiler/Disassembler 12967 12968Implemented support to optionally generate include files for both 12969ASM and C (the -i switch). This simplifies BIOS development by 12970automatically creating include files that contain external 12971declarations for the symbols that are created within the 12972 12973(optionally generated) ASM and C AML source files. 12974 12975 12976---------------------------------------- 1297715 November 2002. Summary of changes for version 20021115. 12978 129791) ACPI CA Core Subsystem: 12980 12981Fixed a memory leak problem where an error during resolution of 12982 12983method arguments during a method invocation from another method 12984failed to cleanup properly by deleting all successfully resolved 12985argument objects. 12986 12987Fixed a problem where the target of the Index() operator was not 12988correctly constructed if the source object was a package. This 12989problem has not been detected because the use of a target operand 12990with Index() is very rare. 12991 12992Fixed a problem with the Index() operator where an attempt was 12993made to delete the operand objects twice. 12994 12995Fixed a problem where an attempt was made to delete an operand 12996twice during execution of the CondRefOf() operator if the target 12997did not exist. 12998 12999Implemented the first of perhaps several internal create object 13000functions that create and initialize a specific object type. This 13001consolidates duplicated code wherever the object is created, thus 13002shrinking the size of the subsystem. 13003 13004Implemented improved debug/error messages for errors that occur 13005during nested method invocations. All executing method pathnames 13006are displayed (with the error) as the call stack is unwound - thus 13007simplifying debug. 13008 13009Fixed a problem introduced in the 10/02 release that caused 13010premature deletion of a buffer object if a buffer was used as an 13011ASL operand where an integer operand is required (Thus causing an 13012implicit object conversion from Buffer to Integer.) The change in 13013the 10/02 release was attempting to fix a memory leak (albeit 13014incorrectly.) 13015 13016Code and Data Size: Current core subsystem library sizes are shown 13017below. These are the code and data sizes for the acpica.lib 13018produced by the Microsoft Visual C++ 6.0 compiler, and these 13019values do not include any ACPI driver or OSPM code. The debug 13020version of the code includes the debug output trace mechanism and 13021has a much larger code and data size. Note that these values will 13022vary depending on the efficiency of the compiler and the compiler 13023options used during generation. 13024 13025 Previous Release 13026 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13027 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13028 Current Release: 13029 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 13030 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 13031 13032 130332) Linux 13034 13035Changed the implementation of the ACPI semaphores to use down() 13036instead of down_interruptable(). It is important that the 13037execution of ACPI control methods not be interrupted by signals. 13038Methods must run to completion, or the system may be left in an 13039unknown/unstable state. 13040 13041Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 13042(Shawn Starr) 13043 13044 130453) iASL Compiler/Disassembler 13046 13047 13048Changed the default location of output files. All output files 13049are now placed in the current directory by default instead of in 13050the directory of the source file. This change may affect some 13051existing makefiles, but it brings the behavior of the compiler in 13052line with other similar tools. The location of the output files 13053can be overridden with the -p command line switch. 13054 13055 13056---------------------------------------- 1305711 November 2002. Summary of changes for version 20021111. 13058 13059 130600) ACPI Specification 2.0B is released and is now available at: 13061http://www.acpi.info/index.html 13062 13063 130641) ACPI CA Core Subsystem: 13065 13066Implemented support for the ACPI 2.0 SMBus Operation Regions. 13067This includes the early detection and handoff of the request to 13068the SMBus region handler (avoiding all of the complex field 13069support code), and support for the bidirectional return packet 13070from an SMBus write operation. This paves the way for the 13071development of SMBus drivers in each host operating system. 13072 13073Fixed a problem where the semaphore WAIT_FOREVER constant was 13074defined as 32 bits, but must be 16 bits according to the ACPI 13075specification. This had the side effect of causing ASL 13076Mutex/Event timeouts even though the ASL code requested a wait 13077forever. Changed all internal references to the ACPI timeout 13078parameter to 16 bits to prevent future problems. Changed the name 13079of WAIT_FOREVER to ACPI_WAIT_FOREVER. 13080 13081Code and Data Size: Current core subsystem library sizes are shown 13082below. These are the code and data sizes for the acpica.lib 13083produced by the Microsoft Visual C++ 6.0 compiler, and these 13084values do not include any ACPI driver or OSPM code. The debug 13085version of the code includes the debug output trace mechanism and 13086has a much larger code and data size. Note that these values will 13087vary depending on the efficiency of the compiler and the compiler 13088options used during generation. 13089 13090 Previous Release 13091 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13092 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13093 Current Release: 13094 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 13095 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 13096 13097 130982) Linux 13099 13100Module loading/unloading fixes (John Cagle) 13101 13102 131033) iASL Compiler/Disassembler 13104 13105Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 13106 13107Implemented support for the disassembly of all SMBus protocol 13108keywords (SMBQuick, SMBWord, etc.) 13109 13110---------------------------------------- 1311101 November 2002. Summary of changes for version 20021101. 13112 13113 131141) ACPI CA Core Subsystem: 13115 13116Fixed a problem where platforms that have a GPE1 block but no GPE0 13117block were not handled correctly. This resulted in a "GPE 13118overlap" error message. GPE0 is no longer required. 13119 13120Removed code added in the previous release that inserted nodes 13121into the namespace in alphabetical order. This caused some side- 13122effects on various machines. The root cause of the problem is 13123still under investigation since in theory, the internal ordering 13124of the namespace nodes should not matter. 13125 13126 13127Enhanced error reporting for the case where a named object is not 13128found during control method execution. The full ACPI namepath 13129(name reference) of the object that was not found is displayed in 13130this case. 13131 13132Note: as a result of the overhaul of the namespace object types in 13133the previous release, the namespace nodes for the predefined 13134scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 13135instead of ACPI_TYPE_ANY. This simplifies the namespace 13136management code but may affect code that walks the namespace tree 13137looking for specific object types. 13138 13139Code and Data Size: Current core subsystem library sizes are shown 13140below. These are the code and data sizes for the acpica.lib 13141produced by the Microsoft Visual C++ 6.0 compiler, and these 13142values do not include any ACPI driver or OSPM code. The debug 13143version of the code includes the debug output trace mechanism and 13144has a much larger code and data size. Note that these values will 13145vary depending on the efficiency of the compiler and the compiler 13146options used during generation. 13147 13148 Previous Release 13149 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13150 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13151 Current Release: 13152 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 13153 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 13154 13155 131562) Linux 13157 13158Fixed a problem introduced in the previous release where the 13159Processor and Thermal objects were not recognized and installed in 13160/proc. This was related to the scope type change described above. 13161 13162 131633) iASL Compiler/Disassembler 13164 13165Implemented the -g option to get all of the required ACPI tables 13166from the registry and save them to files (Windows version of the 13167compiler only.) The required tables are the FADT, FACS, and DSDT. 13168 13169Added ACPI table checksum validation during table disassembly in 13170order to catch corrupted tables. 13171 13172 13173---------------------------------------- 1317422 October 2002. Summary of changes for version 20021022. 13175 131761) ACPI CA Core Subsystem: 13177 13178Implemented a restriction on the Scope operator that the target 13179must already exist in the namespace at the time the operator is 13180encountered (during table load or method execution). In other 13181words, forward references are not allowed and Scope() cannot 13182create a new object. This changes the previous behavior where the 13183interpreter would create the name if not found. This new behavior 13184correctly enables the search-to-root algorithm during namespace 13185lookup of the target name. Because of this upsearch, this fixes 13186the known Compaq _SB_.OKEC problem and makes both the AML 13187interpreter and iASL compiler compatible with other ACPI 13188implementations. 13189 13190Completed a major overhaul of the internal ACPI object types for 13191the ACPI Namespace and the associated operand objects. Many of 13192these types had become obsolete with the introduction of the two- 13193pass namespace load. This cleanup simplifies the code and makes 13194the entire namespace load mechanism much clearer and easier to 13195understand. 13196 13197Improved debug output for tracking scope opening/closing to help 13198diagnose scoping issues. The old scope name as well as the new 13199scope name are displayed. Also improved error messages for 13200problems with ASL Mutex objects and error messages for GPE 13201problems. 13202 13203Cleaned up the namespace dump code, removed obsolete code. 13204 13205All string output (for all namespace/object dumps) now uses the 13206common ACPI string output procedure which handles escapes properly 13207and does not emit non-printable characters. 13208 13209Fixed some issues with constants in the 64-bit version of the 13210local C library (utclib.c) 13211 13212 132132) Linux 13214 13215EC Driver: No longer attempts to acquire the Global Lock at 13216interrupt level. 13217 13218 132193) iASL Compiler/Disassembler 13220 13221Implemented ACPI 2.0B grammar change that disallows all Type 1 and 132222 opcodes outside of a control method. This means that the 13223"executable" operators (versus the "namespace" operators) cannot 13224be used at the table level; they can only be used within a control 13225method. 13226 13227Implemented the restriction on the Scope() operator where the 13228target must already exist in the namespace at the time the 13229operator is encountered (during ASL compilation). In other words, 13230forward references are not allowed and Scope() cannot create a new 13231object. This makes the iASL compiler compatible with other ACPI 13232implementations and makes the Scope() implementation adhere to the 13233ACPI specification. 13234 13235Fixed a problem where namepath optimization for the Alias operator 13236was optimizing the wrong path (of the two namepaths.) This caused 13237a "Missing alias link" error message. 13238 13239Fixed a problem where an "unknown reserved name" warning could be 13240incorrectly generated for names like "_SB" when the trailing 13241underscore is not used in the original ASL. 13242 13243Fixed a problem where the reserved name check did not handle 13244NamePaths with multiple NameSegs correctly. The first nameseg of 13245the NamePath was examined instead of the last NameSeg. 13246 13247 13248---------------------------------------- 13249 1325002 October 2002. Summary of changes for this release. 13251 13252 132531) ACPI CA Core Subsystem version 20021002: 13254 13255Fixed a problem where a store/copy of a string to an existing 13256string did not always set the string length properly in the String 13257object. 13258 13259Fixed a reported problem with the ToString operator where the 13260behavior was identical to the ToHexString operator instead of just 13261simply converting a raw buffer to a string data type. 13262 13263Fixed a problem where CopyObject and the other "explicit" 13264conversion operators were not updating the internal namespace node 13265type as part of the store operation. 13266 13267Fixed a memory leak during implicit source operand conversion 13268where the original object was not deleted if it was converted to a 13269new object of a different type. 13270 13271Enhanced error messages for all problems associated with namespace 13272lookups. Common procedure generates and prints the lookup name as 13273well as the formatted status. 13274 13275Completed implementation of a new design for the Alias support 13276within the namespace. The existing design did not handle the case 13277where a new object was assigned to one of the two names due to the 13278use of an explicit conversion operator, resulting in the two names 13279pointing to two different objects. The new design simply points 13280the Alias name to the original name node - not to the object. 13281This results in a level of indirection that must be handled in the 13282name resolution mechanism. 13283 13284Code and Data Size: Current core subsystem library sizes are shown 13285below. These are the code and data sizes for the acpica.lib 13286produced by the Microsoft Visual C++ 6.0 compiler, and these 13287values do not include any ACPI driver or OSPM code. The debug 13288version of the code includes the debug output trace mechanism and 13289has a larger code and data size. Note that these values will vary 13290depending on the efficiency of the compiler and the compiler 13291options used during generation. 13292 13293 Previous Release 13294 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13295 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13296 Current Release: 13297 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 13298 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 13299 13300 133012) Linux 13302 13303Initialize thermal driver's timer before it is used. (Knut 13304Neumann) 13305 13306Allow handling negative celsius values. (Kochi Takayoshi) 13307 13308Fix thermal management and make trip points. R/W (Pavel Machek) 13309 13310Fix /proc/acpi/sleep. (P. Christeas) 13311 13312IA64 fixes. (David Mosberger) 13313 13314Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 13315 13316Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 13317Brodowski) 13318 13319 133203) iASL Compiler/Disassembler 13321 13322Clarified some warning/error messages. 13323 13324 13325---------------------------------------- 1332618 September 2002. Summary of changes for this release. 13327 13328 133291) ACPI CA Core Subsystem version 20020918: 13330 13331Fixed a reported problem with reference chaining (via the Index() 13332and RefOf() operators) in the ObjectType() and SizeOf() operators. 13333The definition of these operators includes the dereferencing of 13334all chained references to return information on the base object. 13335 13336Fixed a problem with stores to indexed package elements - the 13337existing code would not complete the store if an "implicit 13338conversion" was not performed. In other words, if the existing 13339object (package element) was to be replaced completely, the code 13340didn't handle this case. 13341 13342Relaxed typechecking on the ASL "Scope" operator to allow the 13343target name to refer to an object of type Integer, String, or 13344Buffer, in addition to the scoping object types (Device, 13345predefined Scopes, Processor, PowerResource, and ThermalZone.) 13346This allows existing AML code that has workarounds for a bug in 13347Windows to function properly. A warning is issued, however. This 13348affects both the AML interpreter and the iASL compiler. Below is 13349an example of this type of ASL code: 13350 13351 Name(DEB,0x00) 13352 Scope(DEB) 13353 { 13354 13355Fixed some reported problems with 64-bit integer support in the 13356local implementation of C library functions (clib.c) 13357 13358 133592) Linux 13360 13361Use ACPI fix map region instead of IOAPIC region, since it is 13362undefined in non-SMP. 13363 13364Ensure that the SCI has the proper polarity and trigger, even on 13365systems that do not have an interrupt override entry in the MADT. 13366 133672.5 big driver reorganization (Pat Mochel) 13368 13369Use early table mapping code from acpitable.c (Andi Kleen) 13370 13371New blacklist entries (Andi Kleen) 13372 13373Blacklist improvements. Split blacklist code out into a separate 13374file. Move checking the blacklist to very early. Previously, we 13375would use ACPI tables, and then halfway through init, check the 13376blacklist -- too late. Now, it's early enough to completely fall- 13377back to non-ACPI. 13378 13379 133803) iASL Compiler/Disassembler version 20020918: 13381 13382Fixed a problem where the typechecking code didn't know that an 13383alias could point to a method. In other words, aliases were not 13384being dereferenced during typechecking. 13385 13386 13387---------------------------------------- 1338829 August 2002. Summary of changes for this release. 13389 133901) ACPI CA Core Subsystem Version 20020829: 13391 13392If the target of a Scope() operator already exists, it must be an 13393object type that actually opens a scope -- such as a Device, 13394Method, Scope, etc. This is a fatal runtime error. Similar error 13395check has been added to the iASL compiler also. 13396 13397Tightened up the namespace load to disallow multiple names in the 13398same scope. This previously was allowed if both objects were of 13399the same type. (i.e., a lookup was the same as entering a new 13400name). 13401 13402 134032) Linux 13404 13405Ensure that the ACPI interrupt has the proper trigger and 13406polarity. 13407 13408local_irq_disable is extraneous. (Matthew Wilcox) 13409 13410Make "acpi=off" actually do what it says, and not use the ACPI 13411interpreter *or* the tables. 13412 13413Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 13414Takayoshi) 13415 13416 134173) iASL Compiler/Disassembler Version 20020829: 13418 13419Implemented namepath optimization for name declarations. For 13420example, a declaration like "Method (\_SB_.ABCD)" would get 13421optimized to "Method (ABCD)" if the declaration is within the 13422\_SB_ scope. This optimization is in addition to the named 13423reference path optimization first released in the previous 13424version. This would seem to complete all possible optimizations 13425for namepaths within the ASL/AML. 13426 13427If the target of a Scope() operator already exists, it must be an 13428object type that actually opens a scope -- such as a Device, 13429Method, Scope, etc. 13430 13431Implemented a check and warning for unreachable code in the same 13432block below a Return() statement. 13433 13434Fixed a problem where the listing file was not generated if the 13435compiler aborted if the maximum error count was exceeded (200). 13436 13437Fixed a problem where the typechecking of method return values was 13438broken. This includes the check for a return value when the 13439method is invoked as a TermArg (a return value is expected.) 13440 13441Fixed a reported problem where EOF conditions during a quoted 13442string or comment caused a fault. 13443 13444 13445---------------------------------------- 1344615 August 2002. Summary of changes for this release. 13447 134481) ACPI CA Core Subsystem Version 20020815: 13449 13450Fixed a reported problem where a Store to a method argument that 13451contains a reference did not perform the indirect store correctly. 13452This problem was created during the conversion to the new 13453reference object model - the indirect store to a method argument 13454code was not updated to reflect the new model. 13455 13456Reworked the ACPI mode change code to better conform to ACPI 2.0, 13457handle corner cases, and improve code legibility (Kochi Takayoshi) 13458 13459Fixed a problem with the pathname parsing for the carat (^) 13460prefix. The heavy use of the carat operator by the new namepath 13461optimization in the iASL compiler uncovered a problem with the AML 13462interpreter handling of this prefix. In the case where one or 13463more carats precede a single nameseg, the nameseg was treated as 13464standalone and the search rule (to root) was inadvertently 13465applied. This could cause both the iASL compiler and the 13466interpreter to find the wrong object or to miss the error that 13467should occur if the object does not exist at that exact pathname. 13468 13469Found and fixed the problem where the HP Pavilion DSDT would not 13470load. This was a relatively minor tweak to the table loading code 13471(a problem caused by the unexpected encounter with a method 13472invocation not within a control method), but it does not solve the 13473overall issue of the execution of AML code at the table level. 13474This investigation is still ongoing. 13475 13476Code and Data Size: Current core subsystem library sizes are shown 13477below. These are the code and data sizes for the acpica.lib 13478produced by the Microsoft Visual C++ 6.0 compiler, and these 13479values do not include any ACPI driver or OSPM code. The debug 13480version of the code includes the debug output trace mechanism and 13481has a larger code and data size. Note that these values will vary 13482depending on the efficiency of the compiler and the compiler 13483options used during generation. 13484 13485 Previous Release 13486 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13487 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13488 Current Release: 13489 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 13490 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 13491 13492 134932) Linux 13494 13495Remove redundant slab.h include (Brad Hards) 13496 13497Fix several bugs in thermal.c (Herbert Nachtnebel) 13498 13499Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 13500 13501Change acpi_system_suspend to use updated irq functions (Pavel 13502Machek) 13503 13504Export acpi_get_firmware_table (Matthew Wilcox) 13505 13506Use proper root proc entry for ACPI (Kochi Takayoshi) 13507 13508Fix early-boot table parsing (Bjorn Helgaas) 13509 13510 135113) iASL Compiler/Disassembler 13512 13513Reworked the compiler options to make them more consistent and to 13514use two-letter options where appropriate. We were running out of 13515sensible letters. This may break some makefiles, so check the 13516current options list by invoking the compiler with no parameters. 13517 13518Completed the design and implementation of the ASL namepath 13519optimization option for the compiler. This option optimizes all 13520references to named objects to the shortest possible path. The 13521first attempt tries to utilize a single nameseg (4 characters) and 13522the "search-to-root" algorithm used by the interpreter. If that 13523cannot be used (because either the name is not in the search path 13524or there is a conflict with another object with the same name), 13525the pathname is optimized using the carat prefix (usually a 13526shorter string than specifying the entire path from the root.) 13527 13528Implemented support to obtain the DSDT from the Windows registry 13529(when the disassembly option is specified with no input file). 13530Added this code as the implementation for AcpiOsTableOverride in 13531the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 13532utility) to scan memory for the DSDT to the AcpiOsTableOverride 13533function in the DOS OSL to make the disassembler truly OS 13534independent. 13535 13536Implemented a new option to disassemble and compile in one step. 13537When used without an input filename, this option will grab the 13538DSDT from the local machine, disassemble it, and compile it in one 13539step. 13540 13541Added a warning message for invalid escapes (a backslash followed 13542by any character other than the allowable escapes). This catches 13543the quoted string error "\_SB_" (which should be "\\_SB_" ). 13544 13545Also, there are numerous instances in the ACPI specification where 13546this error occurs. 13547 13548Added a compiler option to disable all optimizations. This is 13549basically the "compatibility mode" because by using this option, 13550the AML code will come out exactly the same as other ASL 13551compilers. 13552 13553Added error messages for incorrectly ordered dependent resource 13554functions. This includes: missing EndDependentFn macro at end of 13555dependent resource list, nested dependent function macros (both 13556start and end), and missing StartDependentFn macro. These are 13557common errors that should be caught at compile time. 13558 13559Implemented _OSI support for the disassembler and compiler. _OSI 13560must be included in the namespace for proper disassembly (because 13561the disassembler must know the number of arguments.) 13562 13563Added an "optimization" message type that is optional (off by 13564default). This message is used for all optimizations - including 13565constant folding, integer optimization, and namepath optimization. 13566 13567---------------------------------------- 1356825 July 2002. Summary of changes for this release. 13569 13570 135711) ACPI CA Core Subsystem Version 20020725: 13572 13573The AML Disassembler has been enhanced to produce compilable ASL 13574code and has been integrated into the iASL compiler (see below) as 13575well as the single-step disassembly for the AML debugger and the 13576disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 13577resource templates and macros are fully supported. The 13578disassembler has been tested on over 30 different AML files, 13579producing identical AML when the resulting disassembled ASL file 13580is recompiled with the same ASL compiler. 13581 13582Modified the Resource Manager to allow zero interrupts and zero 13583dma channels during the GetCurrentResources call. This was 13584causing problems on some platforms. 13585 13586Added the AcpiOsRedirectOutput interface to the OSL to simplify 13587output redirection for the AcpiOsPrintf and AcpiOsVprintf 13588interfaces. 13589 13590Code and Data Size: Current core subsystem library sizes are shown 13591below. These are the code and data sizes for the acpica.lib 13592produced by the Microsoft Visual C++ 6.0 compiler, and these 13593values do not include any ACPI driver or OSPM code. The debug 13594version of the code includes the debug output trace mechanism and 13595has a larger code and data size. Note that these values will vary 13596depending on the efficiency of the compiler and the compiler 13597options used during generation. 13598 13599 Previous Release 13600 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13601 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13602 Current Release: 13603 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 13604 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 13605 13606 136072) Linux 13608 13609Fixed a panic in the EC driver (Dominik Brodowski) 13610 13611Implemented checksum of the R/XSDT itself during Linux table scan 13612(Richard Schaal) 13613 13614 136153) iASL compiler 13616 13617The AML disassembler is integrated into the compiler. The "-d" 13618option invokes the disassembler to completely disassemble an 13619input AML file, producing as output a text ASL file with the 13620extension ".dsl" (to avoid name collisions with existing .asl 13621source files.) A future enhancement will allow the disassembler 13622to obtain the BIOS DSDT from the registry under Windows. 13623 13624Fixed a problem with the VendorShort and VendorLong resource 13625descriptors where an invalid AML sequence was created. 13626 13627Implemented a fix for BufferData term in the ASL parser. It was 13628inadvertently defined twice, allowing invalid syntax to pass and 13629causing reduction conflicts. 13630 13631Fixed a problem where the Ones opcode could get converted to a 13632value of zero if "Ones" was used where a byte, word or dword value 13633was expected. The 64-bit value is now truncated to the correct 13634size with the correct value. 13635 13636 13637 13638---------------------------------------- 1363902 July 2002. Summary of changes for this release. 13640 13641 136421) ACPI CA Core Subsystem Version 20020702: 13643 13644The Table Manager code has been restructured to add several new 13645features. Tables that are not required by the core subsystem 13646(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 13647validated in any way and are returned from AcpiGetFirmwareTable if 13648requested. The AcpiOsTableOverride interface is now called for 13649each table that is loaded by the subsystem in order to allow the 13650host to override any table it chooses. Previously, only the DSDT 13651could be overridden. Added one new files, tbrsdt.c and 13652tbgetall.c. 13653 13654Fixed a problem with the conversion of internal package objects to 13655external objects (when a package is returned from a control 13656method.) The return buffer length was set to zero instead of the 13657proper length of the package object. 13658 13659Fixed a reported problem with the use of the RefOf and DeRefOf 13660operators when passing reference arguments to control methods. A 13661new type of Reference object is used internally for references 13662produced by the RefOf operator. 13663 13664Added additional error messages in the Resource Manager to explain 13665AE_BAD_DATA errors when they occur during resource parsing. 13666 13667Split the AcpiEnableSubsystem into two primitives to enable a 13668finer granularity initialization sequence. These two calls should 13669be called in this order: AcpiEnableSubsystem (flags), 13670AcpiInitializeObjects (flags). The flags parameter remains the 13671same. 13672 13673 136742) Linux 13675 13676Updated the ACPI utilities module to understand the new style of 13677fully resolved package objects that are now returned from the core 13678subsystem. This eliminates errors of the form: 13679 13680 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 13681 acpi_utils-0430 [145] acpi_evaluate_reference: 13682 Invalid element in package (not a device reference) 13683 13684The method evaluation utility uses the new buffer allocation 13685scheme instead of calling AcpiEvaluate Object twice. 13686 13687Added support for ECDT. This allows the use of the Embedded 13688 13689Controller before the namespace has been fully initialized, which 13690is necessary for ACPI 2.0 support, and for some laptops to 13691initialize properly. (Laptops using ECDT are still rare, so only 13692limited testing was performed of the added functionality.) 13693 13694Fixed memory leaks in the EC driver. 13695 13696Eliminated a brittle code structure in acpi_bus_init(). 13697 13698Eliminated the acpi_evaluate() helper function in utils.c. It is 13699no longer needed since acpi_evaluate_object can optionally 13700allocate memory for the return object. 13701 13702Implemented fix for keyboard hang when getting battery readings on 13703some systems (Stephen White) 13704 13705PCI IRQ routing update (Dominik Brodowski) 13706 13707Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 13708support 13709 13710---------------------------------------- 1371111 June 2002. Summary of changes for this release. 13712 13713 137141) ACPI CA Core Subsystem Version 20020611: 13715 13716Fixed a reported problem where constants such as Zero and One 13717appearing within _PRT packages were not handled correctly within 13718the resource manager code. Originally reported against the ASL 13719compiler because the code generator now optimizes integers to 13720their minimal AML representation (i.e. AML constants if possible.) 13721The _PRT code now handles all AML constant opcodes correctly 13722(Zero, One, Ones, Revision). 13723 13724Fixed a problem with the Concatenate operator in the AML 13725interpreter where a buffer result object was incorrectly marked as 13726not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 13727 13728All package sub-objects are now fully resolved before they are 13729returned from the external ACPI interfaces. This means that name 13730strings are resolved to object handles, and constant operators 13731(Zero, One, Ones, Revision) are resolved to Integers. 13732 13733Implemented immediate resolution of the AML Constant opcodes 13734(Zero, One, Ones, Revision) to Integer objects upon detection 13735within the AML stream. This has simplified and reduced the 13736generated code size of the subsystem by eliminating about 10 13737switch statements for these constants (which previously were 13738contained in Reference objects.) The complicating issues are that 13739the Zero opcode is used as a "placeholder" for unspecified 13740optional target operands and stores to constants are defined to be 13741no-ops. 13742 13743Code and Data Size: Current core subsystem library sizes are shown 13744below. These are the code and data sizes for the acpica.lib 13745produced by the Microsoft Visual C++ 6.0 compiler, and these 13746values do not include any ACPI driver or OSPM code. The debug 13747version of the code includes the debug output trace mechanism and 13748has a larger code and data size. Note that these values will vary 13749depending on the efficiency of the compiler and the compiler 13750options used during generation. 13751 13752 Previous Release 13753 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13754 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13755 Current Release: 13756 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 13757 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 13758 13759 137602) Linux 13761 13762 13763Added preliminary support for obtaining _TRA data for PCI root 13764bridges (Bjorn Helgaas). 13765 13766 137673) iASL Compiler Version X2046: 13768 13769Fixed a problem where the "_DDN" reserved name was defined to be a 13770control method with one argument. There are no arguments, and 13771_DDN does not have to be a control method. 13772 13773Fixed a problem with the Linux version of the compiler where the 13774source lines printed with error messages were the wrong lines. 13775This turned out to be the "LF versus CR/LF" difference between 13776Windows and Unix. This appears to be the longstanding issue 13777concerning listing output and error messages. 13778 13779Fixed a problem with the Linux version of compiler where opcode 13780names within error messages were wrong. This was caused by a 13781slight difference in the output of the Flex tool on Linux versus 13782Windows. 13783 13784Fixed a problem with the Linux compiler where the hex output files 13785contained some garbage data caused by an internal buffer overrun. 13786 13787 13788---------------------------------------- 1378917 May 2002. Summary of changes for this release. 13790 13791 137921) ACPI CA Core Subsystem Version 20020517: 13793 13794Implemented a workaround to an BIOS bug discovered on the HP 13795OmniBook where the FADT revision number and the table size are 13796inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 13797behavior is to fallback to using only the ACPI 1.0 fields of the 13798FADT if the table is too small to be a ACPI 2.0 table as claimed 13799by the revision number. Although this is a BIOS bug, this is a 13800case where the workaround is simple enough and with no side 13801effects, so it seemed prudent to add it. A warning message is 13802issued, however. 13803 13804Implemented minimum size checks for the fixed-length ACPI tables - 13805- the FADT and FACS, as well as consistency checks between the 13806revision number and the table size. 13807 13808Fixed a reported problem in the table override support where the 13809new table pointer was incorrectly treated as a physical address 13810instead of a logical address. 13811 13812Eliminated the use of the AE_AML_ERROR exception and replaced it 13813with more descriptive codes. 13814 13815Fixed a problem where an exception would occur if an ASL Field was 13816defined with no named Field Units underneath it (used by some 13817index fields). 13818 13819Code and Data Size: Current core subsystem library sizes are shown 13820below. These are the code and data sizes for the acpica.lib 13821produced by the Microsoft Visual C++ 6.0 compiler, and these 13822values do not include any ACPI driver or OSPM code. The debug 13823version of the code includes the debug output trace mechanism and 13824has a larger code and data size. Note that these values will vary 13825depending on the efficiency of the compiler and the compiler 13826options used during generation. 13827 13828 Previous Release 13829 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13830 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13831 Current Release: 13832 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 13833 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 13834 13835 13836 138372) Linux 13838 13839Much work done on ACPI init (MADT and PCI IRQ routing support). 13840(Paul D. and Dominik Brodowski) 13841 13842Fix PCI IRQ-related panic on boot (Sam Revitch) 13843 13844Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 13845 13846Fix "MHz" typo (Dominik Brodowski) 13847 13848Fix RTC year 2000 issue (Dominik Brodowski) 13849 13850Preclude multiple button proc entries (Eric Brunet) 13851 13852Moved arch-specific code out of include/platform/aclinux.h 13853 138543) iASL Compiler Version X2044: 13855 13856Implemented error checking for the string used in the EISAID macro 13857(Usually used in the definition of the _HID object.) The code now 13858strictly enforces the PnP format - exactly 7 characters, 3 13859uppercase letters and 4 hex digits. 13860 13861If a raw string is used in the definition of the _HID object 13862(instead of the EISAID macro), the string must contain all 13863alphanumeric characters (e.g., "*PNP0011" is not allowed because 13864of the asterisk.) 13865 13866Implemented checking for invalid use of ACPI reserved names for 13867most of the name creation operators (Name, Device, Event, Mutex, 13868OperationRegion, PowerResource, Processor, and ThermalZone.) 13869Previously, this check was only performed for control methods. 13870 13871Implemented an additional check on the Name operator to emit an 13872error if a reserved name that must be implemented in ASL as a 13873control method is used. We know that a reserved name must be a 13874method if it is defined with input arguments. 13875 13876The warning emitted when a namespace object reference is not found 13877during the cross reference phase has been changed into an error. 13878The "External" directive should be used for names defined in other 13879modules. 13880 13881 138824) Tools and Utilities 13883 13884The 16-bit tools (adump16 and aexec16) have been regenerated and 13885tested. 13886 13887Fixed a problem with the output of both acpidump and adump16 where 13888the indentation of closing parentheses and brackets was not 13889 13890aligned properly with the parent block. 13891 13892 13893---------------------------------------- 1389403 May 2002. Summary of changes for this release. 13895 13896 138971) ACPI CA Core Subsystem Version 20020503: 13898 13899Added support a new OSL interface that allows the host operating 13900 13901system software to override the DSDT found in the firmware - 13902AcpiOsTableOverride. With this interface, the OSL can examine the 13903version of the firmware DSDT and replace it with a different one 13904if desired. 13905 13906Added new external interfaces for accessing ACPI registers from 13907device drivers and other system software - AcpiGetRegister and 13908AcpiSetRegister. This was simply an externalization of the 13909existing AcpiHwBitRegister interfaces. 13910 13911Fixed a regression introduced in the previous build where the 13912ASL/AML CreateField operator always returned an error, 13913"destination must be a NS Node". 13914 13915Extended the maximum time (before failure) to successfully enable 13916ACPI mode to 3 seconds. 13917 13918Code and Data Size: Current core subsystem library sizes are shown 13919below. These are the code and data sizes for the acpica.lib 13920produced by the Microsoft Visual C++ 6.0 compiler, and these 13921values do not include any ACPI driver or OSPM code. The debug 13922version of the code includes the debug output trace mechanism and 13923has a larger code and data size. Note that these values will vary 13924depending on the efficiency of the compiler and the compiler 13925options used during generation. 13926 13927 Previous Release 13928 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 13929 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 13930 Current Release: 13931 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 13932 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 13933 13934 139352) Linux 13936 13937Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 13938free. While 3 out of 4 of our in-house systems work fine, the last 13939one still hangs when testing the LAPIC timer. 13940 13941Renamed many files in 2.5 kernel release to omit "acpi_" from the 13942name. 13943 13944Added warning on boot for Presario 711FR. 13945 13946Sleep improvements (Pavel Machek) 13947 13948ACPI can now be built without CONFIG_PCI enabled. 13949 13950IA64: Fixed memory map functions (JI Lee) 13951 13952 139533) iASL Compiler Version X2043: 13954 13955Added support to allow the compiler to be integrated into the MS 13956VC++ development environment for one-button compilation of single 13957files or entire projects -- with error-to-source-line mapping. 13958 13959Implemented support for compile-time constant folding for the 13960Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 13961specification. This allows the ASL writer to use expressions 13962instead of Integer/Buffer/String constants in terms that must 13963evaluate to constants at compile time and will also simplify the 13964emitted AML in any such sub-expressions that can be folded 13965(evaluated at compile-time.) This increases the size of the 13966compiler significantly because a portion of the ACPI CA AML 13967interpreter is included within the compiler in order to pre- 13968evaluate constant expressions. 13969 13970 13971Fixed a problem with the "Unicode" ASL macro that caused the 13972compiler to fault. (This macro is used in conjunction with the 13973_STR reserved name.) 13974 13975Implemented an AML opcode optimization to use the Zero, One, and 13976Ones opcodes where possible to further reduce the size of integer 13977constants and thus reduce the overall size of the generated AML 13978code. 13979 13980Implemented error checking for new reserved terms for ACPI version 139812.0A. 13982 13983Implemented the -qr option to display the current list of ACPI 13984reserved names known to the compiler. 13985 13986Implemented the -qc option to display the current list of ASL 13987operators that are allowed within constant expressions and can 13988therefore be folded at compile time if the operands are constants. 13989 13990 139914) Documentation 13992 13993Updated the Programmer's Reference for new interfaces, data types, 13994and memory allocation model options. 13995 13996Updated the iASL Compiler User Reference to apply new format and 13997add information about new features and options. 13998 13999---------------------------------------- 1400019 April 2002. Summary of changes for this release. 14001 140021) ACPI CA Core Subsystem Version 20020419: 14003 14004The source code base for the Core Subsystem has been completely 14005cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 14006versions. The Lint option files used are included in the 14007/acpi/generate/lint directory. 14008 14009Implemented enhanced status/error checking across the entire 14010Hardware manager subsystem. Any hardware errors (reported from 14011the OSL) are now bubbled up and will abort a running control 14012method. 14013 14014 14015Fixed a problem where the per-ACPI-table integer width (32 or 64) 14016was stored only with control method nodes, causing a fault when 14017non-control method code was executed during table loading. The 14018solution implemented uses a global variable to indicate table 14019width across the entire ACPI subsystem. Therefore, ACPI CA does 14020not support mixed integer widths across different ACPI tables 14021(DSDT, SSDT). 14022 14023Fixed a problem where NULL extended fields (X fields) in an ACPI 140242.0 ACPI FADT caused the table load to fail. Although the 14025existing ACPI specification is a bit fuzzy on this topic, the new 14026behavior is to fall back on a ACPI 1.0 field if the corresponding 14027ACPI 2.0 X field is zero (even though the table revision indicates 14028a full ACPI 2.0 table.) The ACPI specification will be updated to 14029clarify this issue. 14030 14031Fixed a problem with the SystemMemory operation region handler 14032where memory was always accessed byte-wise even if the AML- 14033specified access width was larger than a byte. This caused 14034problems on systems with memory-mapped I/O. Memory is now 14035accessed with the width specified. On systems that do not support 14036non-aligned transfers, a check is made to guarantee proper address 14037alignment before proceeding in order to avoid an AML-caused 14038alignment fault within the kernel. 14039 14040 14041Fixed a problem with the ExtendedIrq resource where only one byte 14042of the 4-byte Irq field was extracted. 14043 14044Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 14045function was out of date and required a rewrite. 14046 14047Code and Data Size: Current core subsystem library sizes are shown 14048below. These are the code and data sizes for the acpica.lib 14049produced by the Microsoft Visual C++ 6.0 compiler, and these 14050values do not include any ACPI driver or OSPM code. The debug 14051version of the code includes the debug output trace mechanism and 14052has a larger code and data size. Note that these values will vary 14053depending on the efficiency of the compiler and the compiler 14054options used during generation. 14055 14056 Previous Release 14057 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14058 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14059 Current Release: 14060 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 14061 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 14062 14063 140642) Linux 14065 14066PCI IRQ routing fixes (Dominik Brodowski) 14067 14068 140693) iASL Compiler Version X2042: 14070 14071Implemented an additional compile-time error check for a field 14072unit whose size + minimum access width would cause a run-time 14073access beyond the end-of-region. Previously, only the field size 14074itself was checked. 14075 14076The Core subsystem and iASL compiler now share a common parse 14077object in preparation for compile-time evaluation of the type 140783/4/5 ASL operators. 14079 14080 14081---------------------------------------- 14082Summary of changes for this release: 03_29_02 14083 140841) ACPI CA Core Subsystem Version 20020329: 14085 14086Implemented support for late evaluation of TermArg operands to 14087Buffer and Package objects. This allows complex expressions to be 14088used in the declarations of these object types. 14089 14090Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 140911.0, if the field was larger than 32 bits, it was returned as a 14092buffer - otherwise it was returned as an integer. In ACPI 2.0, 14093the field is returned as a buffer only if the field is larger than 1409464 bits. The TableRevision is now considered when making this 14095conversion to avoid incompatibility with existing ASL code. 14096 14097Implemented logical addressing for AcpiOsGetRootPointer. This 14098allows an RSDP with either a logical or physical address. With 14099this support, the host OS can now override all ACPI tables with 14100one logical RSDP. Includes implementation of "typed" pointer 14101support to allow a common data type for both physical and logical 14102pointers internally. This required a change to the 14103AcpiOsGetRootPointer interface. 14104 14105Implemented the use of ACPI 2.0 Generic Address Structures for all 14106GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 14107mapped I/O for these ACPI features. 14108 14109Initialization now ignores not only non-required tables (All 14110tables other than the FADT, FACS, DSDT, and SSDTs), but also does 14111not validate the table headers of unrecognized tables. 14112 14113Fixed a problem where a notify handler could only be 14114installed/removed on an object of type Device. All "notify" 14115 14116objects are now supported -- Devices, Processor, Power, and 14117Thermal. 14118 14119Removed most verbosity from the ACPI_DB_INFO debug level. Only 14120critical information is returned when this debug level is enabled. 14121 14122Code and Data Size: Current core subsystem library sizes are shown 14123below. These are the code and data sizes for the acpica.lib 14124produced by the Microsoft Visual C++ 6.0 compiler, and these 14125values do not include any ACPI driver or OSPM code. The debug 14126version of the code includes the debug output trace mechanism and 14127has a larger code and data size. Note that these values will vary 14128depending on the efficiency of the compiler and the compiler 14129options used during generation. 14130 14131 Previous Release 14132 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14133 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14134 Current Release: 14135 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 14136 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 14137 14138 141392) Linux: 14140 14141The processor driver (acpi_processor.c) now fully supports ACPI 141422.0-based processor performance control (e.g. Intel(R) 14143SpeedStep(TM) technology) Note that older laptops that only have 14144the Intel "applet" interface are not supported through this. The 14145'limit' and 'performance' interface (/proc) are fully functional. 14146[Note that basic policy for controlling performance state 14147transitions will be included in the next version of ospmd.] The 14148idle handler was modified to more aggressively use C2, and PIIX4 14149errata handling underwent a complete overhaul (big thanks to 14150Dominik Brodowski). 14151 14152Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 14153based devices in the ACPI namespace are now dynamically bound 14154(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 14155This allows, among other things, ACPI to resolve bus numbers for 14156subordinate PCI bridges. 14157 14158Enhanced PCI IRQ routing to get the proper bus number for _PRT 14159entries defined underneath PCI bridges. 14160 14161Added IBM 600E to bad bios list due to invalid _ADR value for 14162PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 14163 14164In the process of adding full MADT support (e.g. IOAPIC) for IA32 14165(acpi.c, mpparse.c) -- stay tuned. 14166 14167Added back visual differentiation between fixed-feature and 14168control-method buttons in dmesg. Buttons are also subtyped (e.g. 14169button/power/PWRF) to simplify button identification. 14170 14171We no longer use -Wno-unused when compiling debug. Please ignore 14172any "_THIS_MODULE defined but not used" messages. 14173 14174Can now shut down the system using "magic sysrq" key. 14175 14176 141773) iASL Compiler version 2041: 14178 14179Fixed a problem where conversion errors for hex/octal/decimal 14180constants were not reported. 14181 14182Implemented a fix for the General Register template Address field. 14183This field was 8 bits when it should be 64. 14184 14185Fixed a problem where errors/warnings were no longer being emitted 14186within the listing output file. 14187 14188Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 14189exactly 4 characters, alphanumeric only. 14190 14191 14192 14193 14194---------------------------------------- 14195Summary of changes for this release: 03_08_02 14196 14197 141981) ACPI CA Core Subsystem Version 20020308: 14199 14200Fixed a problem with AML Fields where the use of the "AccessAny" 14201keyword could cause an interpreter error due to attempting to read 14202or write beyond the end of the parent Operation Region. 14203 14204Fixed a problem in the SystemMemory Operation Region handler where 14205an attempt was made to map memory beyond the end of the region. 14206This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 14207errors on some Linux systems. 14208 14209Fixed a problem where the interpreter/namespace "search to root" 14210algorithm was not functioning for some object types. Relaxed the 14211internal restriction on the search to allow upsearches for all 14212external object types as well as most internal types. 14213 14214 142152) Linux: 14216 14217We now use safe_halt() macro versus individual calls to sti | hlt. 14218 14219Writing to the processor limit interface should now work. "echo 1" 14220will increase the limit, 2 will decrease, and 0 will reset to the 14221 14222default. 14223 14224 142253) ASL compiler: 14226 14227Fixed segfault on Linux version. 14228 14229 14230---------------------------------------- 14231Summary of changes for this release: 02_25_02 14232 142331) ACPI CA Core Subsystem: 14234 14235 14236Fixed a problem where the GPE bit masks were not initialized 14237properly, causing erratic GPE behavior. 14238 14239Implemented limited support for multiple calling conventions. The 14240code can be generated with either the VPL (variable parameter 14241list, or "C") convention, or the FPL (fixed parameter list, or 14242"Pascal") convention. The core subsystem is about 3.4% smaller 14243when generated with FPL. 14244 14245 142462) Linux 14247 14248Re-add some /proc/acpi/event functionality that was lost during 14249the rewrite 14250 14251Resolved issue with /proc events for fixed-feature buttons showing 14252up as the system device. 14253 14254Fixed checks on C2/C3 latencies to be inclusive of maximum values. 14255 14256Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 14257 14258Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 14259 14260Fixed limit interface & usage to fix bugs with passive cooling 14261hysterisis. 14262 14263Restructured PRT support. 14264 14265 14266---------------------------------------- 14267Summary of changes for this label: 02_14_02 14268 14269 142701) ACPI CA Core Subsystem: 14271 14272Implemented support in AcpiLoadTable to allow loading of FACS and 14273FADT tables. 14274 14275Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 14276been removed. All 64-bit platforms should be migrated to the ACPI 142772.0 tables. The actbl71.h header has been removed from the source 14278tree. 14279 14280All C macros defined within the subsystem have been prefixed with 14281"ACPI_" to avoid collision with other system include files. 14282 14283Removed the return value for the two AcpiOsPrint interfaces, since 14284it is never used and causes lint warnings for ignoring the return 14285value. 14286 14287Added error checking to all internal mutex acquire and release 14288calls. Although a failure from one of these interfaces is 14289probably a fatal system error, these checks will cause the 14290immediate abort of the currently executing method or interface. 14291 14292Fixed a problem where the AcpiSetCurrentResources interface could 14293fault. This was a side effect of the deployment of the new memory 14294allocation model. 14295 14296Fixed a couple of problems with the Global Lock support introduced 14297in the last major build. The "common" (1.0/2.0) internal FACS was 14298being overwritten with the FACS signature and clobbering the 14299Global Lock pointer. Also, the actual firmware FACS was being 14300unmapped after construction of the "common" FACS, preventing 14301access to the actual Global Lock field within it. The "common" 14302internal FACS is no longer installed as an actual ACPI table; it 14303is used simply as a global. 14304 14305Code and Data Size: Current core subsystem library sizes are shown 14306below. These are the code and data sizes for the acpica.lib 14307produced by the Microsoft Visual C++ 6.0 compiler, and these 14308values do not include any ACPI driver or OSPM code. The debug 14309version of the code includes the debug output trace mechanism and 14310has a larger code and data size. Note that these values will vary 14311depending on the efficiency of the compiler and the compiler 14312options used during generation. 14313 14314 Previous Release (02_07_01) 14315 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14316 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14317 Current Release: 14318 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 14319 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 14320 14321 143222) Linux 14323 14324Updated Linux-specific code for core macro and OSL interface 14325changes described above. 14326 14327Improved /proc/acpi/event. It now can be opened only once and has 14328proper poll functionality. 14329 14330Fixed and restructured power management (acpi_bus). 14331 14332Only create /proc "view by type" when devices of that class exist. 14333 14334Fixed "charging/discharging" bug (and others) in acpi_battery. 14335 14336Improved thermal zone code. 14337 14338 143393) ASL Compiler, version X2039: 14340 14341 14342Implemented the new compiler restriction on ASL String hex/octal 14343escapes to non-null, ASCII values. An error results if an invalid 14344value is used. (This will require an ACPI 2.0 specification 14345change.) 14346 14347AML object labels that are output to the optional C and ASM source 14348are now prefixed with both the ACPI table signature and table ID 14349to help guarantee uniqueness within a large BIOS project. 14350 14351 14352---------------------------------------- 14353Summary of changes for this label: 02_01_02 14354 143551) ACPI CA Core Subsystem: 14356 14357ACPI 2.0 support is complete in the entire Core Subsystem and the 14358ASL compiler. All new ACPI 2.0 operators are implemented and all 14359other changes for ACPI 2.0 support are complete. With 14360simultaneous code and data optimizations throughout the subsystem, 14361ACPI 2.0 support has been implemented with almost no additional 14362cost in terms of code and data size. 14363 14364Implemented a new mechanism for allocation of return buffers. If 14365the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 14366be allocated on behalf of the caller. Consolidated all return 14367buffer validation and allocation to a common procedure. Return 14368buffers will be allocated via the primary OSL allocation interface 14369since it appears that a separate pool is not needed by most users. 14370If a separate pool is required for these buffers, the caller can 14371still use the original mechanism and pre-allocate the buffer(s). 14372 14373Implemented support for string operands within the DerefOf 14374operator. 14375 14376Restructured the Hardware and Event managers to be table driven, 14377simplifying the source code and reducing the amount of generated 14378code. 14379 14380Split the common read/write low-level ACPI register bitfield 14381procedure into a separate read and write, simplifying the code 14382considerably. 14383 14384Obsoleted the AcpiOsCallocate OSL interface. This interface was 14385used only a handful of times and didn't have enough critical mass 14386for a separate interface. Replaced with a common calloc procedure 14387in the core. 14388 14389Fixed a reported problem with the GPE number mapping mechanism 14390that allows GPE1 numbers to be non-contiguous with GPE0. 14391Reorganized the GPE information and shrunk a large array that was 14392originally large enough to hold info for all possible GPEs (256) 14393to simply large enough to hold all GPEs up to the largest GPE 14394number on the machine. 14395 14396Fixed a reported problem with resource structure alignment on 64- 14397bit platforms. 14398 14399Changed the AcpiEnableEvent and AcpiDisableEvent external 14400interfaces to not require any flags for the common case of 14401enabling/disabling a GPE. 14402 14403Implemented support to allow a "Notify" on a Processor object. 14404 14405Most TBDs in comments within the source code have been resolved 14406and eliminated. 14407 14408 14409Fixed a problem in the interpreter where a standalone parent 14410prefix (^) was not handled correctly in the interpreter and 14411debugger. 14412 14413Removed obsolete and unnecessary GPE save/restore code. 14414 14415Implemented Field support in the ASL Load operator. This allows a 14416table to be loaded from a named field, in addition to loading a 14417table directly from an Operation Region. 14418 14419Implemented timeout and handle support in the external Global Lock 14420interfaces. 14421 14422Fixed a problem in the AcpiDump utility where pathnames were no 14423longer being generated correctly during the dump of named objects. 14424 14425Modified the AML debugger to give a full display of if/while 14426predicates instead of just one AML opcode at a time. (The 14427predicate can have several nested ASL statements.) The old method 14428was confusing during single stepping. 14429 14430Code and Data Size: Current core subsystem library sizes are shown 14431below. These are the code and data sizes for the acpica.lib 14432produced by the Microsoft Visual C++ 6.0 compiler, and these 14433values do not include any ACPI driver or OSPM code. The debug 14434version of the code includes the debug output trace mechanism and 14435has a larger code and data size. Note that these values will vary 14436depending on the efficiency of the compiler and the compiler 14437options used during generation. 14438 14439 Previous Release (12_18_01) 14440 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14441 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14442 Current Release: 14443 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 14444 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 14445 144462) Linux 14447 14448 Implemented fix for PIIX reverse throttling errata (Processor 14449driver) 14450 14451Added new Limit interface (Processor and Thermal drivers) 14452 14453New thermal policy (Thermal driver) 14454 14455Many updates to /proc 14456 14457Battery "low" event support (Battery driver) 14458 14459Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 14460 14461IA32 - IA64 initialization unification, no longer experimental 14462 14463Menuconfig options redesigned 14464 144653) ASL Compiler, version X2037: 14466 14467Implemented several new output features to simplify integration of 14468AML code into firmware: 1) Output the AML in C source code with 14469labels for each named ASL object. The original ASL source code 14470is interleaved as C comments. 2) Output the AML in ASM source code 14471with labels and interleaved ASL source. 3) Output the AML in 14472raw hex table form, in either C or ASM. 14473 14474Implemented support for optional string parameters to the 14475LoadTable operator. 14476 14477Completed support for embedded escape sequences within string 14478literals. The compiler now supports all single character escapes 14479as well as the Octal and Hex escapes. Note: the insertion of a 14480null byte into a string literal (via the hex/octal escape) causes 14481the string to be immediately terminated. A warning is issued. 14482 14483Fixed a problem where incorrect AML was generated for the case 14484where an ASL namepath consists of a single parent prefix ( 14485 14486) with no trailing name segments. 14487 14488The compiler has been successfully generated with a 64-bit C 14489compiler. 14490 14491 14492 14493 14494---------------------------------------- 14495Summary of changes for this label: 12_18_01 14496 144971) Linux 14498 14499Enhanced blacklist with reason and severity fields. Any table's 14500signature may now be used to identify a blacklisted system. 14501 14502Call _PIC control method to inform the firmware which interrupt 14503model the OS is using. Turn on any disabled link devices. 14504 14505Cleaned up busmgr /proc error handling (Andreas Dilger) 14506 14507 2) ACPI CA Core Subsystem: 14508 14509Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 14510while loop) 14511 14512Completed implementation of the ACPI 2.0 "Continue", 14513"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 14514operators. All new ACPI 2.0 operators are now implemented in both 14515the ASL compiler and the AML interpreter. The only remaining ACPI 145162.0 task is support for the String data type in the DerefOf 14517operator. Fixed a problem with AcquireMutex where the status code 14518was lost if the caller had to actually wait for the mutex. 14519 14520Increased the maximum ASL Field size from 64K bits to 4G bits. 14521 14522Completed implementation of the external Global Lock interfaces -- 14523AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 14524Handler parameters were added. 14525 14526Completed another pass at removing warnings and issues when 14527compiling with 64-bit compilers. The code now compiles cleanly 14528with the Intel 64-bit C/C++ compiler. Most notably, the pointer 14529add and subtract (diff) macros have changed considerably. 14530 14531 14532Created and deployed a new ACPI_SIZE type that is 64-bits wide on 1453364-bit platforms, 32-bits on all others. This type is used 14534wherever memory allocation and/or the C sizeof() operator is used, 14535and affects the OSL memory allocation interfaces AcpiOsAllocate 14536and AcpiOsCallocate. 14537 14538Implemented sticky user breakpoints in the AML debugger. 14539 14540Code and Data Size: Current core subsystem library sizes are shown 14541below. These are the code and data sizes for the acpica.lib 14542produced by the Microsoft Visual C++ 6.0 compiler, and these 14543values do not include any ACPI driver or OSPM code. The debug 14544version of the code includes the debug output trace mechanism and 14545has a larger code and data size. Note that these values will vary 14546depending on the efficiency of the compiler and the compiler 14547options used during generation. 14548 14549 Previous Release (12_05_01) 14550 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14551 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14552 Current Release: 14553 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 14554 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 14555 14556 3) ASL Compiler, version X2034: 14557 14558Now checks for (and generates an error if detected) the use of a 14559Break or Continue statement without an enclosing While statement. 14560 14561 14562Successfully generated the compiler with the Intel 64-bit C 14563compiler. 14564 14565 ---------------------------------------- 14566Summary of changes for this label: 12_05_01 14567 14568 1) ACPI CA Core Subsystem: 14569 14570The ACPI 2.0 CopyObject operator is fully implemented. This 14571operator creates a new copy of an object (and is also used to 14572bypass the "implicit conversion" mechanism of the Store operator.) 14573 14574The ACPI 2.0 semantics for the SizeOf operator are fully 14575implemented. The change is that performing a SizeOf on a 14576reference object causes an automatic dereference of the object to 14577tha actual value before the size is evaluated. This behavior was 14578undefined in ACPI 1.0. 14579 14580The ACPI 2.0 semantics for the Extended IRQ resource descriptor 14581have been implemented. The interrupt polarity and mode are now 14582independently set. 14583 14584Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 14585appearing in Package objects were not properly converted to 14586integers when the internal Package was converted to an external 14587object (via the AcpiEvaluateObject interface.) 14588 14589Fixed a problem with the namespace object deletion mechanism for 14590objects created by control methods. There were two parts to this 14591problem: 1) Objects created during the initialization phase method 14592parse were not being deleted, and 2) The object owner ID mechanism 14593to track objects was broken. 14594 14595Fixed a problem where the use of the ASL Scope operator within a 14596control method would result in an invalid opcode exception. 14597 14598Fixed a problem introduced in the previous label where the buffer 14599length required for the _PRT structure was not being returned 14600correctly. 14601 14602Code and Data Size: Current core subsystem library sizes are shown 14603below. These are the code and data sizes for the acpica.lib 14604produced by the Microsoft Visual C++ 6.0 compiler, and these 14605values do not include any ACPI driver or OSPM code. The debug 14606version of the code includes the debug output trace mechanism and 14607has a larger code and data size. Note that these values will vary 14608depending on the efficiency of the compiler and the compiler 14609options used during generation. 14610 14611 Previous Release (11_20_01) 14612 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14613 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14614 14615 Current Release: 14616 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 14617 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 14618 14619 2) Linux: 14620 14621Updated all files to apply cleanly against 2.4.16. 14622 14623Added basic PCI Interrupt Routing Table (PRT) support for IA32 14624(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 14625version supports both static and dyanmic PRT entries, but dynamic 14626entries are treated as if they were static (not yet 14627reconfigurable). Architecture- specific code to use this data is 14628absent on IA32 but should be available shortly. 14629 14630Changed the initialization sequence to start the ACPI interpreter 14631(acpi_init) prior to initialization of the PCI driver (pci_init) 14632in init/main.c. This ordering is required to support PRT and 14633facilitate other (future) enhancement. A side effect is that the 14634ACPI bus driver and certain device drivers can no longer be loaded 14635as modules. 14636 14637Modified the 'make menuconfig' options to allow PCI Interrupt 14638Routing support to be included without the ACPI Bus and other 14639device drivers. 14640 14641 3) ASL Compiler, version X2033: 14642 14643Fixed some issues with the use of the new CopyObject and 14644DataTableRegion operators. Both are fully functional. 14645 14646 ---------------------------------------- 14647Summary of changes for this label: 11_20_01 14648 14649 20 November 2001. Summary of changes for this release. 14650 14651 1) ACPI CA Core Subsystem: 14652 14653Updated Index support to match ACPI 2.0 semantics. Storing a 14654Integer, String, or Buffer to an Index of a Buffer will store only 14655the least-significant byte of the source to the Indexed buffer 14656byte. Multiple writes are not performed. 14657 14658Fixed a problem where the access type used in an AccessAs ASL 14659operator was not recorded correctly into the field object. 14660 14661Fixed a problem where ASL Event objects were created in a 14662signalled state. Events are now created in an unsignalled state. 14663 14664The internal object cache is now purged after table loading and 14665initialization to reduce the use of dynamic kernel memory -- on 14666the assumption that object use is greatest during the parse phase 14667of the entire table (versus the run-time use of individual control 14668methods.) 14669 14670ACPI 2.0 variable-length packages are now fully operational. 14671 14672Code and Data Size: Code and Data optimizations have permitted new 14673feature development with an actual reduction in the library size. 14674Current core subsystem library sizes are shown below. These are 14675the code and data sizes for the acpica.lib produced by the 14676Microsoft Visual C++ 6.0 compiler, and these values do not include 14677any ACPI driver or OSPM code. The debug version of the code 14678includes the debug output trace mechanism and has a larger code 14679and data size. Note that these values will vary depending on the 14680efficiency of the compiler and the compiler options used during 14681generation. 14682 14683 Previous Release (11_09_01): 14684 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14685 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14686 14687 Current Release: 14688 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 14689 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 14690 14691 2) Linux: 14692 14693Enhanced the ACPI boot-time initialization code to allow the use 14694of Local APIC tables for processor enumeration on IA-32, and to 14695pave the way for a fully MPS-free boot (on SMP systems) in the 14696near future. This functionality replaces 14697arch/i386/kernel/acpitables.c, which was introduced in an earlier 146982.4.15-preX release. To enable this feature you must add 14699"acpi_boot=on" to the kernel command line -- see the help entry 14700for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 14701the works... 14702 14703Restructured the configuration options to allow boot-time table 14704parsing support without inclusion of the ACPI Interpreter (and 14705other) code. 14706 14707NOTE: This release does not include fixes for the reported events, 14708power-down, and thermal passive cooling issues (coming soon). 14709 14710 3) ASL Compiler: 14711 14712Added additional typechecking for Fields within restricted access 14713Operation Regions. All fields within EC and CMOS regions must be 14714declared with ByteAcc. All fields withing SMBus regions must be 14715declared with the BufferAcc access type. 14716 14717Fixed a problem where the listing file output of control methods 14718no longer interleaved the actual AML code with the ASL source 14719code. 14720 14721 14722 14723 14724---------------------------------------- 14725Summary of changes for this label: 11_09_01 14726 147271) ACPI CA Core Subsystem: 14728 14729Implemented ACPI 2.0-defined support for writes to fields with a 14730Buffer, String, or Integer source operand that is smaller than the 14731target field. In these cases, the source operand is zero-extended 14732to fill the target field. 14733 14734Fixed a problem where a Field starting bit offset (within the 14735parent operation region) was calculated incorrectly if the 14736 14737alignment of the field differed from the access width. This 14738affected CreateWordField, CreateDwordField, CreateQwordField, and 14739possibly other fields that use the "AccessAny" keyword. 14740 14741Fixed a problem introduced in the 11_02_01 release where indirect 14742stores through method arguments did not operate correctly. 14743 147442) Linux: 14745 14746Implemented boot-time ACPI table parsing support 14747(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 14748facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 14749legacy BIOS interfaces (e.g. MPS) for the configuration of system 14750processors, memory, and interrupts during setup_arch(). Note that 14751this patch does not include the required architecture-specific 14752changes required to apply this information -- subsequent patches 14753will be posted for both IA32 and IA64 to achieve this. 14754 14755Added low-level sleep support for IA32 platforms, courtesy of Pat 14756Mochel. This allows IA32 systems to transition to/from various 14757sleeping states (e.g. S1, S3), although the lack of a centralized 14758driver model and power-manageable drivers will prevent its 14759(successful) use on most systems. 14760 14761Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 14762submenu, unified IA32 and IA64 options, added new "Boot using ACPI 14763tables" option, etc. 14764 14765Increased the default timeout for the EC driver from 1ms to 10ms 14766(1000 cycles of 10us) to try to address AE_TIME errors during EC 14767transactions. 14768 14769 ---------------------------------------- 14770Summary of changes for this label: 11_02_01 14771 147721) ACPI CA Core Subsystem: 14773 14774ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 14775(QWordAcc keyword). All ACPI 2.0 64-bit support is now 14776implemented. 14777 14778OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 14779changes to support ACPI 2.0 Qword field access. Read/Write 14780PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 14781accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 14782the value parameter for the address space handler interface is now 14783an ACPI_INTEGER. OSL implementations of these interfaces must now 14784handle the case where the Width parameter is 64. 14785 14786Index Fields: Fixed a problem where unaligned bit assembly and 14787disassembly for IndexFields was not supported correctly. 14788 14789Index and Bank Fields: Nested Index and Bank Fields are now 14790supported. During field access, a check is performed to ensure 14791that the value written to an Index or Bank register is not out of 14792the range of the register. The Index (or Bank) register is 14793written before each access to the field data. Future support will 14794include allowing individual IndexFields to be wider than the 14795DataRegister width. 14796 14797Fields: Fixed a problem where the AML interpreter was incorrectly 14798attempting to write beyond the end of a Field/OpRegion. This was 14799a boundary case that occurred when a DWORD field was written to a 14800BYTE access OpRegion, forcing multiple writes and causing the 14801interpreter to write one datum too many. 14802 14803Fields: Fixed a problem with Field/OpRegion access where the 14804starting bit address of a field was incorrectly calculated if the 14805current access type was wider than a byte (WordAcc, DwordAcc, or 14806QwordAcc). 14807 14808Fields: Fixed a problem where forward references to individual 14809FieldUnits (individual Field names within a Field definition) were 14810not resolved during the AML table load. 14811 14812Fields: Fixed a problem where forward references from a Field 14813definition to the parent Operation Region definition were not 14814resolved during the AML table load. 14815 14816Fields: Duplicate FieldUnit names within a scope are now detected 14817during AML table load. 14818 14819Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 14820returned an incorrect name for the root node. 14821 14822Code and Data Size: Code and Data optimizations have permitted new 14823feature development with an actual reduction in the library size. 14824Current core subsystem library sizes are shown below. These are 14825the code and data sizes for the acpica.lib produced by the 14826Microsoft Visual C++ 6.0 compiler, and these values do not include 14827any ACPI driver or OSPM code. The debug version of the code 14828includes the debug output trace mechanism and has a larger code 14829and data size. Note that these values will vary depending on the 14830efficiency of the compiler and the compiler options used during 14831generation. 14832 14833 Previous Release (10_18_01): 14834 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14835 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14836 14837 Current Release: 14838 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 14839 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 14840 14841 2) Linux: 14842 14843Improved /proc processor output (Pavel Machek) Re-added 14844MODULE_LICENSE("GPL") to all modules. 14845 14846 3) ASL Compiler version X2030: 14847 14848Duplicate FieldUnit names within a scope are now detected and 14849flagged as errors. 14850 14851 4) Documentation: 14852 14853Programmer Reference updated to reflect OSL and address space 14854handler interface changes described above. 14855 14856---------------------------------------- 14857Summary of changes for this label: 10_18_01 14858 14859ACPI CA Core Subsystem: 14860 14861Fixed a problem with the internal object reference count mechanism 14862that occasionally caused premature object deletion. This resolves 14863all of the outstanding problem reports where an object is deleted 14864in the middle of an interpreter evaluation. Although this problem 14865only showed up in rather obscure cases, the solution to the 14866problem involved an adjustment of all reference counts involving 14867objects attached to namespace nodes. 14868 14869Fixed a problem with Field support in the interpreter where 14870writing to an aligned field whose length is an exact multiple (2 14871or greater) of the field access granularity would cause an attempt 14872to write beyond the end of the field. 14873 14874The top level AML opcode execution functions within the 14875interpreter have been renamed with a more meaningful and 14876consistent naming convention. The modules exmonad.c and 14877exdyadic.c were eliminated. New modules are exoparg1.c, 14878exoparg2.c, exoparg3.c, and exoparg6.c. 14879 14880Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 14881 14882Fixed a problem where the AML debugger was causing some internal 14883objects to not be deleted during subsystem termination. 14884 14885Fixed a problem with the external AcpiEvaluateObject interface 14886where the subsystem would fault if the named object to be 14887evaluated refered to a constant such as Zero, Ones, etc. 14888 14889Fixed a problem with IndexFields and BankFields where the 14890subsystem would fault if the index, data, or bank registers were 14891not defined in the same scope as the field itself. 14892 14893Added printf format string checking for compilers that support 14894this feature. Corrected more than 50 instances of issues with 14895format specifiers within invocations of ACPI_DEBUG_PRINT 14896throughout the core subsystem code. 14897 14898The ASL "Revision" operator now returns the ACPI support level 14899implemented in the core - the value "2" since the ACPI 2.0 support 14900is more than 50% implemented. 14901 14902Enhanced the output of the AML debugger "dump namespace" command 14903to output in a more human-readable form. 14904 14905Current core subsystem library code sizes are shown below. These 14906 14907are the code and data sizes for the acpica.lib produced by the 14908Microsoft Visual C++ 6.0 compiler, and these values do not include 14909any ACPI driver or OSPM code. The debug version of the code 14910includes the full debug trace mechanism -- leading to a much 14911 14912larger code and data size. Note that these values will vary 14913depending on the efficiency of the compiler and the compiler 14914options used during generation. 14915 14916 Previous Label (09_20_01): 14917 Non-Debug Version: 65K Code, 5K Data, 70K Total 14918 Debug Version: 138K Code, 58K Data, 196K Total 14919 14920 This Label: 14921 14922 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 14923 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 14924 14925Linux: 14926 14927Implemented a "Bad BIOS Blacklist" to track machines that have 14928known ASL/AML problems. 14929 14930Enhanced the /proc interface for the thermal zone driver and added 14931support for _HOT (the critical suspend trip point). The 'info' 14932file now includes threshold/policy information, and allows setting 14933of _SCP (cooling preference) and _TZP (polling frequency) values 14934to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 14935frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 14936preference to the passive/quiet mode (if supported by the ASL). 14937 14938Implemented a workaround for a gcc bug that resuted in an OOPs 14939when loading the control method battery driver. 14940 14941 ---------------------------------------- 14942Summary of changes for this label: 09_20_01 14943 14944 ACPI CA Core Subsystem: 14945 14946The AcpiEnableEvent and AcpiDisableEvent interfaces have been 14947modified to allow individual GPE levels to be flagged as wake- 14948enabled (i.e., these GPEs are to remain enabled when the platform 14949sleeps.) 14950 14951The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 14952support wake-enabled GPEs. This means that upon entering the 14953sleep state, all GPEs that are not wake-enabled are disabled. 14954When leaving the sleep state, these GPEs are reenabled. 14955 14956A local double-precision divide/modulo module has been added to 14957enhance portability to OS kernels where a 64-bit math library is 14958not available. The new module is "utmath.c". 14959 14960Several optimizations have been made to reduce the use of CPU 14961stack. Originally over 2K, the maximum stack usage is now below 149622K at 1860 bytes (1.82k) 14963 14964Fixed a problem with the AcpiGetFirmwareTable interface where the 14965root table pointer was not mapped into a logical address properly. 14966 14967Fixed a problem where a NULL pointer was being dereferenced in the 14968interpreter code for the ASL Notify operator. 14969 14970Fixed a problem where the use of the ASL Revision operator 14971returned an error. This operator now returns the current version 14972of the ACPI CA core subsystem. 14973 14974Fixed a problem where objects passed as control method parameters 14975to AcpiEvaluateObject were always deleted at method termination. 14976However, these objects may end up being stored into the namespace 14977by the called method. The object reference count mechanism was 14978applied to these objects instead of a force delete. 14979 14980Fixed a problem where static strings or buffers (contained in the 14981AML code) that are declared as package elements within the ASL 14982code could cause a fault because the interpreter would attempt to 14983delete them. These objects are now marked with the "static 14984object" flag to prevent any attempt to delete them. 14985 14986Implemented an interpreter optimization to use operands directly 14987from the state object instead of extracting the operands to local 14988variables. This reduces stack use and code size, and improves 14989performance. 14990 14991The module exxface.c was eliminated as it was an unnecessary extra 14992layer of code. 14993 14994Current core subsystem library code sizes are shown below. These 14995are the code and data sizes for the acpica.lib produced by the 14996Microsoft Visual C++ 6.0 compiler, and these values do not include 14997any ACPI driver or OSPM code. The debug version of the code 14998includes the full debug trace mechanism -- leading to a much 14999larger code and data size. Note that these values will vary 15000depending on the efficiency of the compiler and the compiler 15001options used during generation. 15002 15003 Non-Debug Version: 65K Code, 5K Data, 70K Total 15004(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 15005Total (Previously 195K) 15006 15007Linux: 15008 15009Support for ACPI 2.0 64-bit integers has been added. All ACPI 15010Integer objects are now 64 bits wide 15011 15012All Acpi data types and structures are now in lower case. Only 15013Acpi macros are upper case for differentiation. 15014 15015 Documentation: 15016 15017Changes to the external interfaces as described above. 15018 15019 ---------------------------------------- 15020Summary of changes for this label: 08_31_01 15021 15022 ACPI CA Core Subsystem: 15023 15024A bug with interpreter implementation of the ASL Divide operator 15025was found and fixed. The implicit function return value (not the 15026explicit store operands) was returning the remainder instead of 15027the quotient. This was a longstanding bug and it fixes several 15028known outstanding issues on various platforms. 15029 15030The ACPI_DEBUG_PRINT and function trace entry/exit macros have 15031been further optimized for size. There are 700 invocations of the 15032DEBUG_PRINT macro alone, so each optimization reduces the size of 15033the debug version of the subsystem significantly. 15034 15035A stack trace mechanism has been implemented. The maximum stack 15036usage is about 2K on 32-bit platforms. The debugger command "stat 15037stack" will display the current maximum stack usage. 15038 15039All public symbols and global variables within the subsystem are 15040now prefixed with the string "Acpi". This keeps all of the 15041symbols grouped together in a kernel map, and avoids conflicts 15042with other kernel subsystems. 15043 15044Most of the internal fixed lookup tables have been moved into the 15045code segment via the const operator. 15046 15047Several enhancements have been made to the interpreter to both 15048reduce the code size and improve performance. 15049 15050Current core subsystem library code sizes are shown below. These 15051are the code and data sizes for the acpica.lib produced by the 15052Microsoft Visual C++ 6.0 compiler, and these values do not include 15053any ACPI driver or OSPM code. The debug version of the code 15054includes the full debug trace mechanism which contains over 700 15055invocations of the DEBUG_PRINT macro, 500 function entry macro 15056invocations, and over 900 function exit macro invocations -- 15057leading to a much larger code and data size. Note that these 15058values will vary depending on the efficiency of the compiler and 15059the compiler options used during generation. 15060 15061 Non-Debug Version: 64K Code, 5K Data, 69K Total 15062Debug Version: 137K Code, 58K Data, 195K Total 15063 15064 Linux: 15065 15066Implemented wbinvd() macro, pending a kernel-wide definition. 15067 15068Fixed /proc/acpi/event to handle poll() and short reads. 15069 15070 ASL Compiler, version X2026: 15071 15072Fixed a problem introduced in the previous label where the AML 15073 15074code emitted for package objects produced packages with zero 15075length. 15076 15077 ---------------------------------------- 15078Summary of changes for this label: 08_16_01 15079 15080ACPI CA Core Subsystem: 15081 15082The following ACPI 2.0 ASL operators have been implemented in the 15083AML interpreter (These are already supported by the Intel ASL 15084compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 15085ToBuffer. Support for 64-bit AML constants is implemented in the 15086AML parser, debugger, and disassembler. 15087 15088The internal memory tracking mechanism (leak detection code) has 15089been upgraded to reduce the memory overhead (a separate tracking 15090block is no longer allocated for each memory allocation), and now 15091supports all of the internal object caches. 15092 15093The data structures and code for the internal object caches have 15094been coelesced and optimized so that there is a single cache and 15095memory list data structure and a single group of functions that 15096implement generic cache management. This has reduced the code 15097size in both the debug and release versions of the subsystem. 15098 15099The DEBUG_PRINT macro(s) have been optimized for size and replaced 15100by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 15101different, because it generates a single call to an internal 15102function. This results in a savings of about 90 bytes per 15103invocation, resulting in an overall code and data savings of about 1510416% in the debug version of the subsystem. 15105 15106 Linux: 15107 15108Fixed C3 disk corruption problems and re-enabled C3 on supporting 15109machines. 15110 15111Integrated low-level sleep code by Patrick Mochel. 15112 15113Further tweaked source code Linuxization. 15114 15115Other minor fixes. 15116 15117 ASL Compiler: 15118 15119Support for ACPI 2.0 variable length packages is fixed/completed. 15120 15121Fixed a problem where the optional length parameter for the ACPI 151222.0 ToString operator. 15123 15124Fixed multiple extraneous error messages when a syntax error is 15125detected within the declaration line of a control method. 15126 15127 ---------------------------------------- 15128Summary of changes for this label: 07_17_01 15129 15130ACPI CA Core Subsystem: 15131 15132Added a new interface named AcpiGetFirmwareTable to obtain any 15133ACPI table via the ACPI signature. The interface can be called at 15134any time during kernel initialization, even before the kernel 15135virtual memory manager is initialized and paging is enabled. This 15136allows kernel subsystems to obtain ACPI tables very early, even 15137before the ACPI CA subsystem is initialized. 15138 15139Fixed a problem where Fields defined with the AnyAcc attribute 15140could be resolved to the incorrect address under the following 15141conditions: 1) the field width is larger than 8 bits and 2) the 15142parent operation region is not defined on a DWORD boundary. 15143 15144Fixed a problem where the interpreter is not being locked during 15145namespace initialization (during execution of the _INI control 15146methods), causing an error when an attempt is made to release it 15147later. 15148 15149ACPI 2.0 support in the AML Interpreter has begun and will be 15150ongoing throughout the rest of this year. In this label, The Mod 15151operator is implemented. 15152 15153Added a new data type to contain full PCI addresses named 15154ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 15155and Function values. 15156 15157 Linux: 15158 15159Enhanced the Linux version of the source code to change most 15160capitalized ACPI type names to lowercase. For example, all 15161instances of ACPI_STATUS are changed to acpi_status. This will 15162result in a large diff, but the change is strictly cosmetic and 15163aligns the CA code closer to the Linux coding standard. 15164 15165OSL Interfaces: 15166 15167The interfaces to the PCI configuration space have been changed to 15168add the PCI Segment number and to split the single 32-bit combined 15169DeviceFunction field into two 16-bit fields. This was 15170accomplished by moving the four values that define an address in 15171PCI configuration space (segment, bus, device, and function) to 15172the new ACPI_PCI_ID structure. 15173 15174The changes to the PCI configuration space interfaces led to a 15175reexamination of the complete set of address space access 15176interfaces for PCI, I/O, and Memory. The previously existing 18 15177interfaces have proven difficult to maintain (any small change 15178must be propagated across at least 6 interfaces) and do not easily 15179allow for future expansion to 64 bits if necessary. Also, on some 15180systems, it would not be appropriate to demultiplex the access 15181width (8, 16, 32,or 64) before calling the OSL if the 15182corresponding native OS interfaces contain a similar access width 15183parameter. For these reasons, the 18 address space interfaces 15184have been replaced by these 6 new ones: 15185 15186AcpiOsReadPciConfiguration 15187AcpiOsWritePciConfiguration 15188AcpiOsReadMemory 15189AcpiOsWriteMemory 15190AcpiOsReadPort 15191AcpiOsWritePort 15192 15193Added a new interface named AcpiOsGetRootPointer to allow the OSL 15194to perform the platform and/or OS-specific actions necessary to 15195obtain the ACPI RSDP table pointer. On IA-32 platforms, this 15196interface will simply call down to the CA core to perform the low- 15197memory search for the table. On IA-64, the RSDP is obtained from 15198EFI. Migrating this interface to the OSL allows the CA core to 15199 15200remain OS and platform independent. 15201 15202Added a new interface named AcpiOsSignal to provide a generic 15203"function code and pointer" interface for various miscellaneous 15204signals and notifications that must be made to the host OS. The 15205first such signals are intended to support the ASL Fatal and 15206Breakpoint operators. In the latter case, the AcpiOsBreakpoint 15207interface has been obsoleted. 15208 15209The definition of the AcpiFormatException interface has been 15210changed to simplify its use. The caller no longer must supply a 15211buffer to the call; A pointer to a const string is now returned 15212directly. This allows the call to be easily used in printf 15213statements, etc. since the caller does not have to manage a local 15214buffer. 15215 15216 15217 ASL Compiler, Version X2025: 15218 15219The ACPI 2.0 Switch/Case/Default operators have been implemented 15220and are fully functional. They will work with all ACPI 1.0 15221interpreters, since the operators are simply translated to If/Else 15222pairs. 15223 15224The ACPI 2.0 ElseIf operator is implemented and will also work 15225with 1.0 interpreters, for the same reason. 15226 15227Implemented support for ACPI 2.0 variable-length packages. These 15228packages have a separate opcode, and their size is determined by 15229the interpreter at run-time. 15230 15231Documentation The ACPI CA Programmer Reference has been updated to 15232reflect the new interfaces and changes to existing interfaces. 15233 15234 ------------------------------------------ 15235Summary of changes for this label: 06_15_01 15236 15237 ACPI CA Core Subsystem: 15238 15239Fixed a problem where a DWORD-accessed field within a Buffer 15240object would get its byte address inadvertently rounded down to 15241the nearest DWORD. Buffers are always Byte-accessible. 15242 15243 ASL Compiler, version X2024: 15244 15245Fixed a problem where the Switch() operator would either fault or 15246hang the compiler. Note however, that the AML code for this ACPI 152472.0 operator is not yet implemented. 15248 15249Compiler uses the new AcpiOsGetTimer interface to obtain compile 15250timings. 15251 15252Implementation of the CreateField operator automatically converts 15253a reference to a named field within a resource descriptor from a 15254byte offset to a bit offset if required. 15255 15256Added some missing named fields from the resource descriptor 15257support. These are the names that are automatically created by the 15258compiler to reference fields within a descriptor. They are only 15259valid at compile time and are not passed through to the AML 15260interpreter. 15261 15262Resource descriptor named fields are now typed as Integers and 15263subject to compile-time typechecking when used in expressions. 15264 15265 ------------------------------------------ 15266Summary of changes for this label: 05_18_01 15267 15268 ACPI CA Core Subsystem: 15269 15270Fixed a couple of problems in the Field support code where bits 15271from adjacent fields could be returned along with the proper field 15272bits. Restructured the field support code to improve performance, 15273readability and maintainability. 15274 15275New DEBUG_PRINTP macro automatically inserts the procedure name 15276into the output, saving hundreds of copies of procedure name 15277strings within the source, shrinking the memory footprint of the 15278debug version of the core subsystem. 15279 15280 Source Code Structure: 15281 15282The source code directory tree was restructured to reflect the 15283current organization of the component architecture. Some files 15284and directories have been moved and/or renamed. 15285 15286 Linux: 15287 15288Fixed leaking kacpidpc processes. 15289 15290Fixed queueing event data even when /proc/acpi/event is not 15291opened. 15292 15293 ASL Compiler, version X2020: 15294 15295Memory allocation performance enhancement - over 24X compile time 15296improvement on large ASL files. Parse nodes and namestring 15297buffers are now allocated from a large internal compiler buffer. 15298 15299The temporary .SRC file is deleted unless the "-s" option is 15300specified 15301 15302The "-d" debug output option now sends all output to the .DBG file 15303instead of the console. 15304 15305"External" second parameter is now optional 15306 15307"ElseIf" syntax now properly allows the predicate 15308 15309Last operand to "Load" now recognized as a Target operand 15310 15311Debug object can now be used anywhere as a normal object. 15312 15313ResourceTemplate now returns an object of type BUFFER 15314 15315EISAID now returns an object of type INTEGER 15316 15317"Index" now works with a STRING operand 15318 15319"LoadTable" now accepts optional parameters 15320 15321"ToString" length parameter is now optional 15322 15323"Interrupt (ResourceType," parse error fixed. 15324 15325"Register" with a user-defined region space parse error fixed 15326 15327Escaped backslash at the end of a string ("\\") scan/parse error 15328fixed 15329 15330"Revision" is now an object of type INTEGER. 15331 15332 15333 15334------------------------------------------ 15335Summary of changes for this label: 05_02_01 15336 15337Linux: 15338 15339/proc/acpi/event now blocks properly. 15340 15341Removed /proc/sys/acpi. You can still dump your DSDT from 15342/proc/acpi/dsdt. 15343 15344 ACPI CA Core Subsystem: 15345 15346Fixed a problem introduced in the previous label where some of the 15347"small" resource descriptor types were not recognized. 15348 15349Improved error messages for the case where an ASL Field is outside 15350the range of the parent operation region. 15351 15352 ASL Compiler, version X2018: 15353 15354 15355Added error detection for ASL Fields that extend beyond the length 15356of the parent operation region (only if the length of the region 15357is known at compile time.) This includes fields that have a 15358minimum access width that is smaller than the parent region, and 15359individual field units that are partially or entirely beyond the 15360extent of the parent. 15361 15362 15363 15364------------------------------------------ 15365Summary of changes for this label: 04_27_01 15366 15367 ACPI CA Core Subsystem: 15368 15369Fixed a problem where the namespace mutex could be released at the 15370wrong time during execution of AcpiRemoveAddressSpaceHandler. 15371 15372Added optional thread ID output for debug traces, to simplify 15373debugging of multiple threads. Added context switch notification 15374when the debug code realizes that a different thread is now 15375executing ACPI code. 15376 15377Some additional external data types have been prefixed with the 15378string "ACPI_" for consistency. This may effect existing code. 15379The data types affected are the external callback typedefs - e.g., 15380 15381WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 15382 15383 Linux: 15384 15385Fixed an issue with the OSL semaphore implementation where a 15386thread was waking up with an error from receiving a SIGCHLD 15387signal. 15388 15389Linux version of ACPI CA now uses the system C library for string 15390manipulation routines instead of a local implementation. 15391 15392Cleaned up comments and removed TBDs. 15393 15394 ASL Compiler, version X2017: 15395 15396Enhanced error detection and reporting for all file I/O 15397operations. 15398 15399 Documentation: 15400 15401Programmer Reference updated to version 1.06. 15402 15403 15404 15405------------------------------------------ 15406Summary of changes for this label: 04_13_01 15407 15408 ACPI CA Core Subsystem: 15409 15410Restructured support for BufferFields and RegionFields. 15411BankFields support is now fully operational. All known 32-bit 15412limitations on field sizes have been removed. Both BufferFields 15413and (Operation) RegionFields are now supported by the same field 15414management code. 15415 15416Resource support now supports QWORD address and IO resources. The 1541716/32/64 bit address structures and the Extended IRQ structure 15418have been changed to properly handle Source Resource strings. 15419 15420A ThreadId of -1 is now used to indicate a "mutex not acquired" 15421condition internally and must never be returned by AcpiOsThreadId. 15422This reserved value was changed from 0 since Unix systems allow a 15423thread ID of 0. 15424 15425Linux: 15426 15427Driver code reorganized to enhance portability 15428 15429Added a kernel configuration option to control ACPI_DEBUG 15430 15431Fixed the EC driver to honor _GLK. 15432 15433ASL Compiler, version X2016: 15434 15435Fixed support for the "FixedHw" keyword. Previously, the FixedHw 15436address space was set to 0, not 0x7f as it should be. 15437 15438 ------------------------------------------ 15439Summary of changes for this label: 03_13_01 15440 15441 ACPI CA Core Subsystem: 15442 15443During ACPI initialization, the _SB_._INI method is now run if 15444present. 15445 15446Notify handler fix - notifies are deferred until the parent method 15447completes execution. This fixes the "mutex already acquired" 15448issue seen occasionally. 15449 15450Part of the "implicit conversion" rules in ACPI 2.0 have been 15451found to cause compatibility problems with existing ASL/AML. The 15452convert "result-to-target-type" implementation has been removed 15453for stores to method Args and Locals. Source operand conversion 15454is still fully implemented. Possible changes to ACPI 2.0 15455specification pending. 15456 15457Fix to AcpiRsCalculatePciRoutingTableLength to return correct 15458length. 15459 15460Fix for compiler warnings for 64-bit compiles. 15461 15462 Linux: 15463 15464/proc output aligned for easier parsing. 15465 15466Release-version compile problem fixed. 15467 15468New kernel configuration options documented in Configure.help. 15469 15470IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 15471context" message. 15472 15473 OSPM: 15474 15475Power resource driver integrated with bus manager. 15476 15477Fixed kernel fault during active cooling for thermal zones. 15478 15479Source Code: 15480 15481The source code tree has been restructured. 15482 15483 15484 15485------------------------------------------ 15486Summary of changes for this label: 03_02_01 15487 15488 Linux OS Services Layer (OSL): 15489 15490Major revision of all Linux-specific code. 15491 15492Modularized all ACPI-specific drivers. 15493 15494Added new thermal zone and power resource drivers. 15495 15496Revamped /proc interface (new functionality is under /proc/acpi). 15497 15498New kernel configuration options. 15499 15500 Linux known issues: 15501 15502New kernel configuration options not documented in Configure.help 15503yet. 15504 15505 15506Module dependencies not currently implemented. If used, they 15507should be loaded in this order: busmgr, power, ec, system, 15508processor, battery, ac_adapter, button, thermal. 15509 15510Modules will not load if CONFIG_MODVERSION is set. 15511 15512IBM 600E - entering S5 may reboot instead of shutting down. 15513 15514IBM 600E - Sleep button may generate "Invalid <NULL> context" 15515message. 15516 15517Some systems may fail with "execution mutex already acquired" 15518message. 15519 15520 ACPI CA Core Subsystem: 15521 15522Added a new OSL Interface, AcpiOsGetThreadId. This was required 15523for the deadlock detection code. Defined to return a non-zero, 32- 15524bit thread ID for the currently executing thread. May be a non- 15525zero constant integer on single-thread systems. 15526 15527Implemented deadlock detection for internal subsystem mutexes. We 15528may add conditional compilation for this code (debug only) later. 15529 15530ASL/AML Mutex object semantics are now fully supported. This 15531includes multiple acquires/releases by owner and support for the 15532 15533Mutex SyncLevel parameter. 15534 15535A new "Force Release" mechanism automatically frees all ASL 15536Mutexes that have been acquired but not released when a thread 15537exits the interpreter. This forces conformance to the ACPI spec 15538("All mutexes must be released when an invocation exits") and 15539prevents deadlocked ASL threads. This mechanism can be expanded 15540(later) to monitor other resource acquisitions if OEM ASL code 15541continues to misbehave (which it will). 15542 15543Several new ACPI exception codes have been added for the Mutex 15544support. 15545 15546Recursive method calls are now allowed and supported (the ACPI 15547spec does in fact allow recursive method calls.) The number of 15548recursive calls is subject to the restrictions imposed by the 15549SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 15550parameter. 15551 15552Implemented support for the SyncLevel parameter for control 15553methods (ACPI 2.0 feature) 15554 15555Fixed a deadlock problem when multiple threads attempted to use 15556the interpreter. 15557 15558Fixed a problem where the string length of a String package 15559element was not always set in a package returned from 15560AcpiEvaluateObject. 15561 15562Fixed a problem where the length of a String package element was 15563not always included in the length of the overall package returned 15564from AcpiEvaluateObject. 15565 15566Added external interfaces (Acpi*) to the ACPI debug memory 15567manager. This manager keeps a list of all outstanding 15568allocations, and can therefore detect memory leaks and attempts to 15569free memory blocks more than once. Useful for code such as the 15570power manager, etc. May not be appropriate for device drivers. 15571Performance with the debug code enabled is slow. 15572 15573The ACPI Global Lock is now an optional hardware element. 15574 15575 ASL Compiler Version X2015: 15576 15577Integrated changes to allow the compiler to be generated on 15578multiple platforms. 15579 15580Linux makefile added to generate the compiler on Linux 15581 15582 Source Code: 15583 15584All platform-specific headers have been moved to their own 15585subdirectory, Include/Platform. 15586 15587New source file added, Interpreter/ammutex.c 15588 15589New header file, Include/acstruct.h 15590 15591 Documentation: 15592 15593The programmer reference has been updated for the following new 15594interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 15595 15596 ------------------------------------------ 15597Summary of changes for this label: 02_08_01 15598 15599Core ACPI CA Subsystem: Fixed a problem where an error was 15600incorrectly returned if the return resource buffer was larger than 15601the actual data (in the resource interfaces). 15602 15603References to named objects within packages are resolved to the 15604 15605full pathname string before packages are returned directly (via 15606the AcpiEvaluateObject interface) or indirectly via the resource 15607interfaces. 15608 15609Linux OS Services Layer (OSL): 15610 15611Improved /proc battery interface. 15612 15613 15614Added C-state debugging output and other miscellaneous fixes. 15615 15616ASL Compiler Version X2014: 15617 15618All defined method arguments can now be used as local variables, 15619including the ones that are not actually passed in as parameters. 15620The compiler tracks initialization of the arguments and issues an 15621exception if they are used without prior assignment (just like 15622locals). 15623 15624The -o option now specifies a filename prefix that is used for all 15625output files, including the AML output file. Otherwise, the 15626default behavior is as follows: 1) the AML goes to the file 15627specified in the DSDT. 2) all other output files use the input 15628source filename as the base. 15629 15630 ------------------------------------------ 15631Summary of changes for this label: 01_25_01 15632 15633Core ACPI CA Subsystem: Restructured the implementation of object 15634store support within the interpreter. This includes support for 15635the Store operator as well as any ASL operators that include a 15636target operand. 15637 15638Partially implemented support for Implicit Result-to-Target 15639conversion. This is when a result object is converted on the fly 15640to the type of an existing target object. Completion of this 15641support is pending further analysis of the ACPI specification 15642concerning this matter. 15643 15644CPU-specific code has been removed from the subsystem (hardware 15645directory). 15646 15647New Power Management Timer functions added 15648 15649Linux OS Services Layer (OSL): Moved system state transition code 15650to the core, fixed it, and modified Linux OSL accordingly. 15651 15652Fixed C2 and C3 latency calculations. 15653 15654 15655We no longer use the compilation date for the version message on 15656initialization, but retrieve the version from AcpiGetSystemInfo(). 15657 15658Incorporated for fix Sony VAIO machines. 15659 15660Documentation: The Programmer Reference has been updated and 15661reformatted. 15662 15663 15664ASL Compiler: Version X2013: Fixed a problem where the line 15665numbering and error reporting could get out of sync in the 15666presence of multiple include files. 15667 15668 ------------------------------------------ 15669Summary of changes for this label: 01_15_01 15670 15671Core ACPI CA Subsystem: 15672 15673Implemented support for type conversions in the execution of the 15674ASL Concatenate operator (The second operand is converted to 15675match the type of the first operand before concatenation.) 15676 15677Support for implicit source operand conversion is partially 15678implemented. The ASL source operand types Integer, Buffer, and 15679String are freely interchangeable for most ASL operators and are 15680converted by the interpreter on the fly as required. Implicit 15681Target operand conversion (where the result is converted to the 15682target type before storing) is not yet implemented. 15683 15684Support for 32-bit and 64-bit BCD integers is implemented. 15685 15686Problem fixed where a field read on an aligned field could cause a 15687read past the end of the field. 15688 15689New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 15690does not return a value, but the caller expects one. (The ASL 15691compiler flags this as a warning.) 15692 15693ASL Compiler: 15694 15695Version X2011: 156961. Static typechecking of all operands is implemented. This 15697prevents the use of invalid objects (such as using a Package where 15698an Integer is required) at compile time instead of at interpreter 15699run-time. 157002. The ASL source line is printed with ALL errors and warnings. 157013. Bug fix for source EOF without final linefeed. 157024. Debug option is split into a parse trace and a namespace trace. 157035. Namespace output option (-n) includes initial values for 15704integers and strings. 157056. Parse-only option added for quick syntax checking. 157067. Compiler checks for duplicate ACPI name declarations 15707 15708Version X2012: 157091. Relaxed typechecking to allow interchangeability between 15710strings, integers, and buffers. These types are now converted by 15711the interpreter at runtime. 157122. Compiler reports time taken by each internal subsystem in the 15713debug output file. 15714 15715 15716 ------------------------------------------ 15717Summary of changes for this label: 12_14_00 15718 15719ASL Compiler: 15720 15721This is the first official release of the compiler. Since the 15722compiler requires elements of the Core Subsystem, this label 15723synchronizes everything. 15724 15725------------------------------------------ 15726Summary of changes for this label: 12_08_00 15727 15728 15729Fixed a problem where named references within the ASL definition 15730of both OperationRegions and CreateXXXFields did not work 15731properly. The symptom was an AE_AML_OPERAND_TYPE during 15732initialization of the region/field. This is similar (but not 15733related internally) to the problem that was fixed in the last 15734label. 15735 15736Implemented both 32-bit and 64-bit support for the BCD ASL 15737functions ToBCD and FromBCD. 15738 15739Updated all legal headers to include "2000" in the copyright 15740years. 15741 15742 ------------------------------------------ 15743Summary of changes for this label: 12_01_00 15744 15745Fixed a problem where method invocations within the ASL definition 15746of both OperationRegions and CreateXXXFields did not work 15747properly. The symptom was an AE_AML_OPERAND_TYPE during 15748initialization of the region/field: 15749 15750 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 15751[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 15752(0x3005) 15753 15754Fixed a problem where operators with more than one nested 15755subexpression would fail. The symptoms were varied, by mostly 15756AE_AML_OPERAND_TYPE errors. This was actually a rather serious 15757problem that has gone unnoticed until now. 15758 15759 Subtract (Add (1,2), Multiply (3,4)) 15760 15761Fixed a problem where AcpiGetHandle didn't quite get fixed in the 15762previous build (The prefix part of a relative path was handled 15763incorrectly). 15764 15765Fixed a problem where Operation Region initialization failed if 15766the operation region name was a "namepath" instead of a simple 15767"nameseg". Symptom was an AE_NO_OPERAND error. 15768 15769Fixed a problem where an assignment to a local variable via the 15770indirect RefOf mechanism only worked for the first such 15771assignment. Subsequent assignments were ignored. 15772 15773 ------------------------------------------ 15774Summary of changes for this label: 11_15_00 15775 15776ACPI 2.0 table support with backwards support for ACPI 1.0 and the 157770.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 15778the AML interpreter does NOT have support for the new 2.0 ASL 15779grammar terms at this time. 15780 15781All ACPI hardware access is via the GAS structures in the ACPI 2.0 15782FADT. 15783 15784All physical memory addresses across all platforms are now 64 bits 15785wide. Logical address width remains dependent on the platform 15786(i.e., "void *"). 15787 15788AcpiOsMapMemory interface changed to a 64-bit physical address. 15789 15790The AML interpreter integer size is now 64 bits, as per the ACPI 157912.0 specification. 15792 15793For backwards compatibility with ACPI 1.0, ACPI tables with a 15794revision number less than 2 use 32-bit integers only. 15795 15796Fixed a problem where the evaluation of OpRegion operands did not 15797always resolve them to numbers properly. 15798 15799------------------------------------------ 15800Summary of changes for this label: 10_20_00 15801 15802Fix for CBN_._STA issue. This fix will allow correct access to 15803CBN_ OpRegions when the _STA returns 0x8. 15804 15805Support to convert ACPI constants (Ones, Zeros, One) to actual 15806values before a package object is returned 15807 15808Fix for method call as predicate to if/while construct causing 15809incorrect if/while behavior 15810 15811Fix for Else block package lengths sometimes calculated wrong (if 15812block > 63 bytes) 15813 15814Fix for Processor object length field, was always zero 15815 15816Table load abort if FACP sanity check fails 15817 15818Fix for problem with Scope(name) if name already exists 15819 15820Warning emitted if a named object referenced cannot be found 15821(resolved) during method execution. 15822 15823 15824 15825 15826 15827------------------------------------------ 15828Summary of changes for this label: 9_29_00 15829 15830New table initialization interfaces: AcpiInitializeSubsystem no 15831longer has any parameters AcpiFindRootPointer - Find the RSDP (if 15832necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 15833>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 15834AcpiLoadTables 15835 15836Note: These interface changes require changes to all existing OSDs 15837 15838The PCI_Config default address space handler is always installed 15839at the root namespace object. 15840 15841------------------------------------------- 15842Summary of changes for this label: 09_15_00 15843 15844The new initialization architecture is implemented. New 15845interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 15846AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 15847 15848(Namespace is automatically loaded when a table is loaded) 15849 15850The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1585152 bytes to 32 bytes. There is usually one of these for every 15852namespace object, so the memory savings is significant. 15853 15854Implemented just-in-time evaluation of the CreateField operators. 15855 15856Bug fixes for IA-64 support have been integrated. 15857 15858Additional code review comments have been implemented 15859 15860The so-called "third pass parse" has been replaced by a final walk 15861through the namespace to initialize all operation regions (address 15862spaces) and fields that have not yet been initialized during the 15863execution of the various _INI and REG methods. 15864 15865New file - namespace/nsinit.c 15866 15867------------------------------------------- 15868Summary of changes for this label: 09_01_00 15869 15870Namespace manager data structures have been reworked to change the 15871primary object from a table to a single object. This has 15872resulted in dynamic memory savings of 3X within the namespace and 158732X overall in the ACPI CA subsystem. 15874 15875Fixed problem where the call to AcpiEvFindPciRootBuses was 15876inadvertently left commented out. 15877 15878Reduced the warning count when generating the source with the GCC 15879compiler. 15880 15881Revision numbers added to each module header showing the 15882SourceSafe version of the file. Please refer to this version 15883number when giving us feedback or comments on individual modules. 15884 15885The main object types within the subsystem have been renamed to 15886clarify their purpose: 15887 15888ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 15889ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 15890ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 15891 15892NOTE: no changes to the initialization sequence are included in 15893this label. 15894 15895------------------------------------------- 15896Summary of changes for this label: 08_23_00 15897 15898Fixed problem where TerminateControlMethod was being called 15899multiple times per method 15900 15901Fixed debugger problem where single stepping caused a semaphore to 15902be oversignalled 15903 15904Improved performance through additional parse object caching - 15905added ACPI_EXTENDED_OP type 15906 15907------------------------------------------- 15908Summary of changes for this label: 08_10_00 15909 15910Parser/Interpreter integration: Eliminated the creation of 15911complete parse trees for ACPI tables and control methods. 15912Instead, parse subtrees are created and then deleted as soon as 15913they are processed (Either entered into the namespace or executed 15914by the interpreter). This reduces the use of dynamic kernel 15915memory significantly. (about 10X) 15916 15917Exception codes broken into classes and renumbered. Be sure to 15918recompile all code that includes acexcep.h. Hopefully we won't 15919have to renumber the codes again now that they are split into 15920classes (environment, programmer, AML code, ACPI table, and 15921internal). 15922 15923Fixed some additional alignment issues in the Resource Manager 15924subcomponent 15925 15926Implemented semaphore tracking in the AcpiExec utility, and fixed 15927several places where mutexes/semaphores were being unlocked 15928without a corresponding lock operation. There are no known 15929semaphore or mutex "leaks" at this time. 15930 15931Fixed the case where an ASL Return operator is used to return an 15932unnamed package. 15933 15934------------------------------------------- 15935Summary of changes for this label: 07_28_00 15936 15937Fixed a problem with the way addresses were calculated in 15938AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 15939manifested itself when a Field was created with WordAccess or 15940DwordAccess, but the field unit defined within the Field was less 15941 15942than a Word or Dword. 15943 15944Fixed a problem in AmlDumpOperands() module's loop to pull 15945operands off of the operand stack to display information. The 15946problem manifested itself as a TLB error on 64-bit systems when 15947accessing an operand stack with two or more operands. 15948 15949Fixed a problem with the PCI configuration space handlers where 15950context was getting confused between accesses. This required a 15951change to the generic address space handler and address space 15952setup definitions. Handlers now get both a global handler context 15953(this is the one passed in by the user when executing 15954AcpiInstallAddressSpaceHandler() and a specific region context 15955that is unique to each region (For example, the _ADR, _SEG and 15956_BBN values associated with a specific region). The generic 15957function definitions have changed to the following: 15958 15959typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 15960UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 15961*HandlerContext, // This used to be void *Context void 15962*RegionContext); // This is an additional parameter 15963 15964typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 15965RegionHandle, UINT32 Function, void *HandlerContext, void 15966**RegionContext); // This used to be **ReturnContext 15967 15968------------------------------------------- 15969Summary of changes for this label: 07_21_00 15970 15971Major file consolidation and rename. All files within the 15972interpreter have been renamed as well as most header files. This 15973was done to prevent collisions with existing files in the host 15974OSs -- filenames such as "config.h" and "global.h" seem to be 15975quite common. The VC project files have been updated. All 15976makefiles will require modification. 15977 15978The parser/interpreter integration continues in Phase 5 with the 15979implementation of a complete 2-pass parse (the AML is parsed 15980twice) for each table; This avoids the construction of a huge 15981parse tree and therefore reduces the amount of dynamic memory 15982required by the subsystem. Greater use of the parse object cache 15983means that performance is unaffected. 15984 15985Many comments from the two code reviews have been rolled in. 15986 15987The 64-bit alignment support is complete. 15988 15989------------------------------------------- 15990Summary of changes for this label: 06_30_00 15991 15992With a nod and a tip of the hat to the technology of yesteryear, 15993we've added support in the source code for 80 column output 15994devices. The code is now mostly constrained to 80 columns or 15995less to support environments and editors that 1) cannot display 15996or print more than 80 characters on a single line, and 2) cannot 15997disable line wrapping. 15998 15999A major restructuring of the namespace data structure has been 16000completed. The result is 1) cleaner and more 16001understandable/maintainable code, and 2) a significant reduction 16002in the dynamic memory requirement for each named ACPI object 16003(almost half). 16004 16005------------------------------------------- 16006Summary of changes for this label: 06_23_00 16007 16008Linux support has been added. In order to obtain approval to get 16009the ACPI CA subsystem into the Linux kernel, we've had to make 16010quite a few changes to the base subsystem that will affect all 16011users (all the changes are generic and OS- independent). The 16012effects of these global changes have been somewhat far reaching. 16013Files have been merged and/or renamed and interfaces have been 16014renamed. The major changes are described below. 16015 16016Osd* interfaces renamed to AcpiOs* to eliminate namespace 16017pollution/confusion within our target kernels. All OSD 16018interfaces must be modified to match the new naming convention. 16019 16020Files merged across the subsystem. A number of the smaller source 16021and header files have been merged to reduce the file count and 16022increase the density of the existing files. There are too many 16023to list here. In general, makefiles that call out individual 16024files will require rebuilding. 16025 16026Interpreter files renamed. All interpreter files now have the 16027prefix am* instead of ie* and is*. 16028 16029Header files renamed: The acapi.h file is now acpixf.h. The 16030acpiosd.h file is now acpiosxf.h. We are removing references to 16031the acronym "API" since it is somewhat windowsy. The new name is 16032"external interface" or xface or xf in the filenames.j 16033 16034 16035All manifest constants have been forced to upper case (some were 16036mixed case.) Also, the string "ACPI_" has been prepended to many 16037(not all) of the constants, typedefs, and structs. 16038 16039The globals "DebugLevel" and "DebugLayer" have been renamed 16040"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 16041 16042All other globals within the subsystem are now prefixed with 16043"AcpiGbl_" Internal procedures within the subsystem are now 16044prefixed with "Acpi" (with only a few exceptions). The original 16045two-letter abbreviation for the subcomponent remains after "Acpi" 16046- for example, CmCallocate became AcpiCmCallocate. 16047 16048Added a source code translation/conversion utility. Used to 16049generate the Linux source code, it can be modified to generate 16050other types of source as well. Can also be used to cleanup 16051existing source by removing extraneous spaces and blank lines. 16052Found in tools/acpisrc/* 16053 16054OsdUnMapMemory was renamed to OsdUnmapMemory and then 16055AcpiOsUnmapMemory. (UnMap became Unmap). 16056 16057A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 16058When set to one, this indicates that the caller wants to use the 16059 16060semaphore as a mutex, not a counting semaphore. ACPI CA uses 16061both types. However, implementers of this call may want to use 16062different OS primitives depending on the type of semaphore 16063requested. For example, some operating systems provide separate 16064 16065"mutex" and "semaphore" interfaces - where the mutex interface is 16066much faster because it doesn't have all the overhead of a full 16067semaphore implementation. 16068 16069Fixed a deadlock problem where a method that accesses the PCI 16070address space can block forever if it is the first access to the 16071space. 16072 16073------------------------------------------- 16074Summary of changes for this label: 06_02_00 16075 16076Support for environments that cannot handle unaligned data 16077accesses (e.g. firmware and OS environments devoid of alignment 16078handler technology namely SAL/EFI and the IA-64 Linux kernel) has 16079been added (via configurable macros) in these three areas: - 16080Transfer of data from the raw AML byte stream is done via byte 16081moves instead of word/dword/qword moves. - External objects are 16082aligned within the user buffer, including package elements (sub- 16083objects). - Conversion of name strings to UINT32 Acpi Names is now 16084done byte-wise. 16085 16086The Store operator was modified to mimic Microsoft's 16087implementation when storing to a Buffer Field. 16088 16089Added a check of the BM_STS bit before entering C3. 16090 16091The methods subdirectory has been obsoleted and removed. A new 16092file, cmeval.c subsumes the functionality. 16093 16094A 16-bit (DOS) version of AcpiExec has been developed. The 16095makefile is under the acpiexec directory. 16096