1---------------------------------------- 227 May 2011. Summary of changes for version 20110527: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8ASL Load() operator: Reinstate most restrictions on the incoming ACPI table 9signature. Now, only allow SSDT, OEMx, and a null signature. History: 10 1) Originally, we checked the table signature for "SSDT" or "PSDT". 11 (PSDT is now obsolete.) 12 2) We added support for OEMx tables, signature "OEM" plus a fourth 13 "don't care" character. 14 3) Valid tables were encountered with a null signature, so we just 15 gave up on validating the signature, (05/2008). 16 4) We encountered non-AML tables such as the MADT, which caused 17 interpreter errors and kernel faults. So now, we once again allow 18 only SSDT, OEMx, and now, also a null signature. (05/2011). 19 20Added the missing _TDL predefined name to the global name list in order to 21enable validation. Affects both the core ACPICA code and the iASL compiler. 22 23Example Code and Data Size: These are the sizes for the OS-independent 24acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug 25version of the code includes the debug output trace mechanism and has a much 26larger code and data size. 27 28 Previous Release (VC 9.0): 29 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 30 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 31 Current Release (VC 9.0): 32 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total 33 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total 34 352) iASL Compiler/Disassembler and Tools: 36 37Debugger/AcpiExec: Implemented support for "complex" method arguments on the 38debugger command line. This adds support beyond simple integers -- including 39Strings, Buffers, and Packages. Includes support for nested packages. 40Increased the default command line buffer size to accommodate these arguments. 41See the ACPICA reference for details and syntax. ACPICA BZ 917. 42 43Debugger/AcpiExec: Implemented support for "default" method arguments for the 44Execute/Debug command. Now, the debugger will always invoke a control method 45with the required number of arguments -- even if the command line specifies 46none or insufficient arguments. It uses default integer values for any missing 47arguments. Also fixes a bug where only six method arguments maximum were 48supported instead of the required seven. 49 50Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and 51also return status in order to prevent buffer overruns. See the ACPICA 52reference for details and syntax. ACPICA BZ 921 53 54iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and 55makefiles to simplify support for the two different but similar parser 56generators, bison and yacc. 57 58Updated the generic unix makefile for gcc 4. The default gcc version is now 59expected to be 4 or greater, since options specific to gcc 4 are used. 60 61---------------------------------------- 6213 April 2011. Summary of changes for version 20110413: 63 641) ACPI CA Core Subsystem: 65 66Implemented support to execute a so-called "orphan" _REG method under the EC 67device. This change will force the execution of a _REG method underneath the 68EC 69device even if there is no corresponding operation region of type 70EmbeddedControl. Fixes a problem seen on some machines and apparently is 71compatible with Windows behavior. ACPICA BZ 875. 72 73Added more predefined methods that are eligible for automatic NULL package 74element removal. This change adds another group of predefined names to the 75list 76of names that can be repaired by having NULL package elements dynamically 77removed. This group are those methods that return a single variable-length 78package containing simple data types such as integers, buffers, strings. This 79includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, 80_Sx, 81and _TZD. ACPICA BZ 914. 82 83Split and segregated all internal global lock functions to a new file, 84evglock.c. 85 86Updated internal address SpaceID for DataTable regions. Moved this internal 87space 88id in preparation for ACPI 5.0 changes that will include some new space IDs. 89This 90change should not affect user/host code. 91 92Example Code and Data Size: These are the sizes for the OS-independent 93acpica.lib 94produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 95the code includes the debug output trace mechanism and has a much larger code 96and 97data size. 98 99 Previous Release (VC 9.0): 100 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 101 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 102 Current Release (VC 9.0): 103 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 104 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 105 1062) iASL Compiler/Disassembler and Tools: 107 108iASL/DTC: Major update for new grammar features. Allow generic data types in 109custom ACPI tables. Field names are now optional. Any line can be split to 110multiple lines using the continuation char (\). Large buffers now use line- 111continuation character(s) and no colon on the continuation lines. See the 112grammar 113update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 114 115iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 116Since the parser stuffs a "zero" as the return value for these statements (due 117to 118the underlying AML grammar), they were seen as "return with value" by the iASL 119semantic checking. They are now seen correctly as "null" return statements. 120 121iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 122check for each _REG to ensure that there is in fact a corresponding operation 123region declaration in the same scope. If not, the _REG method is not very 124useful 125since it probably won't be executed. ACPICA BZ 915. 126 127iASL/DTC: Finish support for expression evaluation. Added a new expression 128parser 129that implements c-style operator precedence and parenthesization. ACPICA 130bugzilla 131908. 132 133Disassembler/DTC: Remove support for () and <> style comments in data tables. 134Now 135that DTC has full expression support, we don't want to have comment strings 136that 137start with a parentheses or a less-than symbol. Now, only the standard /* and 138// 139comments are supported, as well as the bracket [] comments. 140 141AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have 142"unusual" 143headers in the acpidump file. Update the header validation to support these 144tables. Problem introduced in previous AcpiXtract version in the change to 145support "wrong checksum" error messages emitted by acpidump utility. 146 147iASL: Add a * option to generate all template files (as a synonym for ALL) as 148in 149"iasl -T *" or "iasl -T ALL". 150 151iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 152abort the compiler on "fatal" errors, simply should abort the current compile. 153This allows multiple compiles with a single (possibly wildcard) compiler 154invocation. 155 156---------------------------------------- 15716 March 2011. Summary of changes for version 20110316: 158 1591) ACPI CA Core Subsystem: 160 161Fixed a problem caused by a _PRW method appearing at the namespace root scope 162during the setup of wake GPEs. A fault could occur if a _PRW directly under 163the 164root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 165 166Implemented support for "spurious" Global Lock interrupts. On some systems, a 167global lock interrupt can occur without the pending flag being set. Upon a GL 168interrupt, we now ensure that a thread is actually waiting for the lock before 169signaling GL availability. Rafael Wysocki, Bob Moore. 170 171Example Code and Data Size: These are the sizes for the OS-independent 172acpica.lib 173produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 174the code includes the debug output trace mechanism and has a much larger code 175and 176data size. 177 178 Previous Release (VC 9.0): 179 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 180 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 181 Current Release (VC 9.0): 182 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 183 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 184 1852) iASL Compiler/Disassembler and Tools: 186 187Implemented full support for the "SLIC" ACPI table. Includes support in the 188header files, disassembler, table compiler, and template generator. Bob Moore, 189Lin Ming. 190 191AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 192Apparently some or all versions of acpidump will occasionally emit a comment 193like 194"Wrong checksum", etc., into the dump file. This was causing problems for 195AcpiXtract. ACPICA BZ 905. 196 197iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 198ACPICA BZ 913. 199 200AcpiExec: Update installation of operation region handlers. Install one 201handler 202for a user-defined address space. This is used by the ASL test suite (ASLTS). 203 204---------------------------------------- 20511 February 2011. Summary of changes for version 20110211: 206 2071) ACPI CA Core Subsystem: 208 209Added a mechanism to defer _REG methods for some early-installed handlers. 210Most user handlers should be installed before call to AcpiEnableSubsystem. 211However, Event handlers and region handlers should be installed after 212AcpiInitializeObjects. Override handlers for the "default" regions should be 213installed early, however. This change executes all _REG methods for the 214default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 215chicken/egg issues between them. ACPICA BZ 848. 216 217Implemented an optimization for GPE detection. This optimization will simply 218ignore GPE registers that contain no enabled GPEs -- there is no need to 219read the register since this information is available internally. This 220becomes more important on machines with a large GPE space. ACPICA bugzilla 221884. Lin Ming. Suggestion from Joe Liu. 222 223Removed all use of the highly unreliable FADT revision field. The revision 224number in the FADT has been found to be completely unreliable and cannot be 225trusted. Only the actual table length can be used to infer the version. This 226change updates the ACPICA core and the disassembler so that both no longer 227even look at the FADT version and instead depend solely upon the FADT 228length. 229 230Fix an unresolved name issue for the no-debug and no-error-message source 231generation cases. The _AcpiModuleName was left undefined in these cases, but 232it is actually needed as a parameter to some interfaces. Define 233_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 234 235Split several large files (makefiles and project files updated) 236 utglobal.c -> utdecode.c 237 dbcomds.c -> dbmethod.c dbnames.c 238 dsopcode.c -> dsargs.c dscontrol.c 239 dsload.c -> dsload2.c 240 aslanalyze.c -> aslbtypes.c aslwalks.c 241 242Example Code and Data Size: These are the sizes for the OS-independent 243acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 244debug version of the code includes the debug output trace mechanism and has 245a much larger code and data size. 246 247 Previous Release (VC 9.0): 248 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 249 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 250 Current Release (VC 9.0): 251 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 252 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 253 2542) iASL Compiler/Disassembler and Tools: 255 256iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 257These are useful C-style macros with the standard definitions. ACPICA 258bugzilla 898. 259 260iASL/DTC: Added support for integer expressions and labels. Support for full 261expressions for all integer fields in all ACPI tables. Support for labels in 262"generic" portions of tables such as UEFI. See the iASL reference manual. 263 264Debugger: Added a command to display the status of global handlers. The 265"handlers" command will display op region, fixed event, and miscellaneous 266global handlers. installation status -- and for op regions, whether default 267or user-installed handler will be used. 268 269iASL: Warn if reserved method incorrectly returns a value. Many predefined 270names are defined such that they do not return a value. If implemented as a 271method, issue a warning if such a name explicitly returns a value. ACPICA 272Bugzilla 855. 273 274iASL: Added detection of GPE method name conflicts. Detects a conflict where 275there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 276example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 277 278iASL/DTC: Fixed a couple input scanner issues with comments and line 279numbers. Comment remover could get confused and miss a comment ending. Fixed 280a problem with line counter maintenance. 281 282iASL/DTC: Reduced the severity of some errors from fatal to error. There is 283no need to abort on simple errors within a field definition. 284 285Debugger: Simplified the output of the help command. All help output now in 286a single screen, instead of help subcommands. ACPICA Bugzilla 897. 287 288---------------------------------------- 28912 January 2011. Summary of changes for version 20110112: 290 2911) ACPI CA Core Subsystem: 292 293Fixed a race condition between method execution and namespace walks that can 294possibly cause a fault. The problem was apparently introduced in version 29520100528 as a result of a performance optimization that reduces the number of 296namespace walks upon method exit by using the delete_namespace_subtree 297function instead of the delete_namespace_by_owner function used previously. 298Bug is a missing namespace lock in the delete_namespace_subtree function. 299dana.myers@oracle.com 300 301Fixed several issues and a possible fault with the automatic "serialized" 302method support. History: This support changes a method to "serialized" on the 303fly if the method generates an AE_ALREADY_EXISTS error, indicating the 304possibility that it cannot handle reentrancy. This fix repairs a couple of 305issues seen in the field, especially on machines with many cores: 306 307 1) Delete method children only upon the exit of the last thread, 308 so as to not delete objects out from under other running threads 309 (and possibly causing a fault.) 310 2) Set the "serialized" bit for the method only upon the exit of the 311 Last thread, so as to not cause deadlock when running threads 312 attempt to exit. 313 3) Cleanup the use of the AML "MethodFlags" and internal method flags 314 so that there is no longer any confusion between the two. 315 316 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 317 318Debugger: Now lock the namespace for duration of a namespace dump. Prevents 319issues if the namespace is changing dynamically underneath the debugger. 320Especially affects temporary namespace nodes, since the debugger displays 321these also. 322 323Updated the ordering of include files. The ACPICA headers should appear 324before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 325any necessary compiler-specific defines, etc. Affects the ACPI-related tools 326and utilities. 327 328Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 329to all module headers and signons, including the Linux header. This affects 330virtually every file in the ACPICA core subsystem, iASL compiler, and all 331utilities. 332 333Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 334project files for VC++ 6.0 are now obsolete. New project files can be found 335under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 336details. 337 338Example Code and Data Size: These are the sizes for the OS-independent 339acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 340debug version of the code includes the debug output trace mechanism and has a 341much larger code and data size. 342 343 Previous Release (VC 6.0): 344 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 345 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 346 Current Release (VC 9.0): 347 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 348 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 349 3502) iASL Compiler/Disassembler and Tools: 351 352iASL: Added generic data types to the Data Table compiler. Add "generic" data 353types such as UINT32, String, Unicode, etc., to simplify the generation of 354platform-defined tables such as UEFI. Lin Ming. 355 356iASL: Added listing support for the Data Table Compiler. Adds listing support 357(-l) to display actual binary output for each line of input code. 358 359---------------------------------------- 36009 December 2010. Summary of changes for version 20101209: 361 3621) ACPI CA Core Subsystem: 363 364Completed the major overhaul of the GPE support code that was begun in July 3652010. Major features include: removal of _PRW execution in ACPICA (host 366executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 367changes to existing interfaces, simplification of GPE handler operation, and 368a handful of new interfaces: 369 370 AcpiUpdateAllGpes 371 AcpiFinishGpe 372 AcpiSetupGpeForWake 373 AcpiSetGpeWakeMask 374 One new file, evxfgpe.c to consolidate all external GPE interfaces. 375 376See the ACPICA Programmer Reference for full details and programming 377information. See the new section 4.4 "General Purpose Event (GPE) Support" 378for a full overview, and section 8.7 "ACPI General Purpose Event Management" 379for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 380Bob Moore, Rafael Wysocki. 381 382Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 383GPE Notify". This feature will automatically issue a Notify(2) on a device 384when a Wake GPE is received if there is no corresponding GPE method or 385handler. ACPICA BZ 870. 386 387Fixed a problem with the Scope() operator during table parse and load phase. 388During load phase (table load or method execution), the scope operator should 389not enter the target into the namespace. Instead, it should open a new scope 390at the target location. Linux BZ 19462, ACPICA BZ 882. 391 392Example Code and Data Size: These are the sizes for the OS-independent 393acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 394debug version of the code includes the debug output trace mechanism and has a 395much larger code and data size. 396 397 Previous Release: 398 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 399 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 400 Current Release: 401 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 402 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 403 4042) iASL Compiler/Disassembler and Tools: 405 406iASL: Relax the alphanumeric restriction on _CID strings. These strings are 407"bus-specific" per the ACPI specification, and therefore any characters are 408acceptable. The only checks that can be performed are for a null string and 409perhaps for a leading asterisk. ACPICA BZ 886. 410 411iASL: Fixed a problem where a syntax error that caused a premature EOF 412condition on the source file emitted a very confusing error message. The 413premature EOF is now detected correctly. ACPICA BZ 891. 414 415Disassembler: Decode the AccessSize within a Generic Address Structure (byte 416access, word access, etc.) Note, this field does not allow arbitrary bit 417access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 418 419New: AcpiNames utility - Example namespace dump utility. Shows an example of 420ACPICA configuration for a minimal namespace dump utility. Uses table and 421namespace managers, but no AML interpreter. Does not add any functionality 422over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 423partition and configure ACPICA. ACPICA BZ 883. 424 425AML Debugger: Increased the debugger buffer size for method return objects. 426Was 4K, increased to 16K. Also enhanced error messages for debugger method 427execution, including the buffer overflow case. 428 429---------------------------------------- 43013 October 2010. Summary of changes for version 20101013: 431 4321) ACPI CA Core Subsystem: 433 434Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 435clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 436HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 437 438Changed the type of the predefined namespace object _TZ from ThermalZone to 439Device. This was found to be confusing to the host software that processes 440the various thermal zones, since _TZ is not really a ThermalZone. However, a 441Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 442Zhang. 443 444Added Windows Vista SP2 to the list of supported _OSI strings. The actual 445string is "Windows 2006 SP2". 446 447Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 448code automatically repairs _HID-related strings, this type of code is no 449longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 450 451Example Code and Data Size: These are the sizes for the OS-independent 452acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 453debug version of the code includes the debug output trace mechanism and has a 454much larger code and data size. 455 456 Previous Release: 457 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 458 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 459 Current Release: 460 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 461 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 462 4632) iASL Compiler/Disassembler and Tools: 464 465iASL: Implemented additional compile-time validation for _HID strings. The 466non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 467the string must be exactly seven or eight characters. For both _HID and _CID 468strings, all characters must be alphanumeric. ACPICA BZ 874. 469 470iASL: Allow certain "null" resource descriptors. Some BIOS code creates 471descriptors that are mostly or all zeros, with the expectation that they will 472be filled in at runtime. iASL now allows this as long as there is a "resource 473tag" (name) associated with the descriptor, which gives the ASL a handle 474needed to modify the descriptor. ACPICA BZ 873. 475 476Added single-thread support to the generic Unix application OSL. Primarily 477for iASL support, this change removes the use of semaphores in the single- 478threaded ACPICA tools/applications - increasing performance. The 479_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 480option. ACPICA BZ 879. 481 482AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 483for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 484 485iASL: Moved all compiler messages to a new file, aslmessages.h. 486 487---------------------------------------- 48815 September 2010. Summary of changes for version 20100915: 489 4901) ACPI CA Core Subsystem: 491 492Removed the AcpiOsDerivePciId OSL interface. The various host implementations 493of this function were not OS-dependent and are now obsolete and can be 494removed from all host OSLs. This function has been replaced by 495AcpiHwDerivePciId, which is now part of the ACPICA core code. 496AcpiHwDerivePciId has been implemented without recursion. Adds one new 497module, hwpci.c. ACPICA BZ 857. 498 499Implemented a dynamic repair for _HID and _CID strings. The following 500problems are now repaired at runtime: 1) Remove a leading asterisk in the 501string, and 2) the entire string is uppercased. Both repairs are in 502accordance with the ACPI specification and will simplify host driver code. 503ACPICA BZ 871. 504 505The ACPI_THREAD_ID type is no longer configurable, internally it is now 506always UINT64. This simplifies the ACPICA code, especially any printf output. 507UINT64 is the only common data type for all thread_id types across all 508operating systems. It is now up to the host OSL to cast the native thread_id 509type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 510Lin Ming, Bob Moore. 511 512Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 513keyword is not standard across compilers, and this type allows inline to be 514configured on a per-compiler basis. Lin Ming. 515 516Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 517Added an extern for this boolean in acpixf.h. Some hosts utilize this value 518during suspend/restore operations. ACPICA BZ 869. 519 520All code that implements error/warning messages with the "ACPI:" prefix has 521been moved to a new module, utxferror.c. 522 523The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 524is used. ACPICA BZ 829. Lin Ming, Bob Moore. 525 526Example Code and Data Size: These are the sizes for the OS-independent 527acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 528debug version of the code includes the debug output trace mechanism and has a 529much larger code and data size. 530 531 Previous Release: 532 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 533 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 534 Current Release: 535 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 536 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 537 5382) iASL Compiler/Disassembler and Tools: 539 540iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 541This keeps the output files free of random error messages that may originate 542from within the namespace/interpreter code. Used this opportunity to merge 543all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 544866. Lin Ming, Bob Moore. 545 546Tools: update some printfs for ansi warnings on size_t. Handle width change 547of size_t on 32-bit versus 64-bit generations. Lin Ming. 548 549---------------------------------------- 55006 August 2010. Summary of changes for version 20100806: 551 5521) ACPI CA Core Subsystem: 553 554Designed and implemented a new host interface to the _OSI support code. This 555will allow the host to dynamically add or remove multiple _OSI strings, as 556well as install an optional handler that is called for each _OSI invocation. 557Also added a new AML debugger command, 'osi' to display and modify the global 558_OSI string table, and test support in the AcpiExec utility. See the ACPICA 559reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 560New Functions: 561 AcpiInstallInterface - Add an _OSI string. 562 AcpiRemoveInterface - Delete an _OSI string. 563 AcpiInstallInterfaceHandler - Install optional _OSI handler. 564Obsolete Functions: 565 AcpiOsValidateInterface - no longer used. 566New Files: 567 source/components/utilities/utosi.c 568 569Re-introduced the support to enable multi-byte transfers for Embedded 570Controller (EC) operation regions. A reported problem was found to be a bug 571in the host OS, not in the multi-byte support. Previously, the maximum data 572size passed to the EC operation region handler was a single byte. There are 573often EC Fields larger than one byte that need to be transferred, and it is 574useful for the EC driver to lock these as a single transaction. This change 575enables single transfers larger than 8 bits. This effectively changes the 576access to the EC space from ByteAcc to AnyAcc, and will probably require 577changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 578transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 579 580Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 581prototype in acpiosxf.h had the output value pointer as a (void *). 582It should be a (UINT64 *). This may affect some host OSL code. 583 584Fixed a couple problems with the recently modified Linux makefiles for iASL 585and AcpiExec. These new makefiles place the generated object files in the 586local directory so that there can be no collisions between the files that are 587shared between them that are compiled with different options. 588 589Example Code and Data Size: These are the sizes for the OS-independent 590acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 591debug version of the code includes the debug output trace mechanism and has a 592much larger code and data size. 593 594 Previous Release: 595 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 596 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 597 Current Release: 598 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 599 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 600 6012) iASL Compiler/Disassembler and Tools: 602 603iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 604namespace from and disassemble an entire group of AML files. Useful for 605loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 606disassembling with one simple command. ACPICA BZ 865. Lin Ming. 607 608iASL: Allow multiple invocations of -e option. This change allows multiple 609uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 610Lin Ming. 611 612---------------------------------------- 61302 July 2010. Summary of changes for version 20100702: 614 6151) ACPI CA Core Subsystem: 616 617Implemented several updates to the recently added GPE reference count 618support. The model for "wake" GPEs is changing to give the host OS complete 619control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 620methods, since the host already must execute them. Also, additional changes 621were made to help ensure that the reference counts are kept in proper 622synchronization with reality. Rafael J. Wysocki. 623 6241) Ensure that GPEs are not enabled twice during initialization. 6252) Ensure that GPE enable masks stay in sync with the reference count. 6263) Do not inadvertently enable GPEs when writing GPE registers. 6274) Remove the internal wake reference counter and add new AcpiGpeWakeup 628interface. This interface will set or clear individual GPEs for wakeup. 6295) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 630are now used for "runtime" GPEs only. 631 632Changed the behavior of the GPE install/remove handler interfaces. The GPE is 633no longer disabled during this process, as it was found to cause problems on 634some machines. Rafael J. Wysocki. 635 636Reverted a change introduced in version 20100528 to enable Embedded 637Controller multi-byte transfers. This change was found to cause problems with 638Index Fields and possibly Bank Fields. It will be reintroduced when these 639problems have been resolved. 640 641Fixed a problem with references to Alias objects within Package Objects. A 642reference to an Alias within the definition of a Package was not always 643resolved properly. Aliases to objects like Processors, Thermal zones, etc. 644were resolved to the actual object instead of a reference to the object as it 645should be. Package objects are only allowed to contain integer, string, 646buffer, package, and reference objects. Redhat bugzilla 608648. 647 648Example Code and Data Size: These are the sizes for the OS-independent 649acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 650debug version of the code includes the debug output trace mechanism and has a 651much larger code and data size. 652 653 Previous Release: 654 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 655 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 656 Current Release: 657 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 658 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 659 6602) iASL Compiler/Disassembler and Tools: 661 662iASL: Implemented a new compiler subsystem to allow definition and 663compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 664are called "ACPI Data Tables", and the new compiler is the "Data Table 665Compiler". This compiler is intended to simplify the existing error-prone 666process of creating these tables for the BIOS, as well as allowing the 667disassembly, modification, recompilation, and override of existing ACPI data 668tables. See the iASL User Guide for detailed information. 669 670iASL: Implemented a new Template Generator option in support of the new Data 671Table Compiler. This option will create examples of all known ACPI tables 672that can be used as the basis for table development. See the iASL 673documentation and the -T option. 674 675Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 676Descriptor Table). 677 678Updated the Linux makefiles for iASL and AcpiExec to place the generated 679object files in the local directory so that there can be no collisions 680between the shared files between them that are generated with different 681options. 682 683Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 684the #define __APPLE__ to enable this support. 685 686---------------------------------------- 68728 May 2010. Summary of changes for version 20100528: 688 689Note: The ACPI 4.0a specification was released on April 5, 2010 and is 690available at www.acpi.info. This is primarily an errata release. 691 6921) ACPI CA Core Subsystem: 693 694Undefined ACPI tables: We are looking for the definitions for the following 695ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 696 697Implemented support to enable multi-byte transfers for Embedded Controller 698(EC) operation regions. Previously, the maximum data size passed to the EC 699operation region handler was a single byte. There are often EC Fields larger 700than one byte that need to be transferred, and it is useful for the EC driver 701to lock these as a single transaction. This change enables single transfers 702larger than 8 bits. This effectively changes the access to the EC space from 703ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 704Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 705transfers. Alexey Starikovskiy, Lin Ming 706 707Implemented a performance enhancement for namespace search and access. This 708change enhances the performance of namespace searches and walks by adding a 709backpointer to the parent in each namespace node. On large namespaces, this 710change can improve overall ACPI performance by up to 9X. Adding a pointer to 711each namespace node increases the overall size of the internal namespace by 712about 5%, since each namespace entry usually consists of both a namespace 713node and an ACPI operand object. However, this is the first growth of the 714namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 715 716Implemented a performance optimization that reduces the number of namespace 717walks. On control method exit, only walk the namespace if the method is known 718to have created namespace objects outside of its local scope. Previously, the 719entire namespace was traversed on each control method exit. This change can 720improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 721 722Added support to truncate I/O addresses to 16 bits for Windows compatibility. 723Some ASL code has been seen in the field that inadvertently has bits set 724above bit 15. This feature is optional and is enabled if the BIOS requests 725any Windows OSI strings. It can also be enabled by the host OS. Matthew 726Garrett, Bob Moore. 727 728Added support to limit the maximum time for the ASL Sleep() operator. To 729prevent accidental deep sleeps, limit the maximum time that Sleep() will 730actually sleep. Configurable, the default maximum is two seconds. ACPICA 731bugzilla 854. 732 733Added run-time validation support for the _WDG and_WED Microsoft predefined 734methods. These objects are defined by "Windows Instrumentation", and are not 735part of the ACPI spec. ACPICA BZ 860. 736 737Expanded all statistic counters used during namespace and device 738initialization from 16 to 32 bits in order to support very large namespaces. 739 740Replaced all instances of %d in printf format specifiers with %u since nearly 741all integers in ACPICA are unsigned. 742 743Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 744as AE_NO_HANDLER. 745 746Example Code and Data Size: These are the sizes for the OS-independent 747acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 748debug version of the code includes the debug output trace mechanism and has a 749much larger code and data size. 750 751 Previous Release: 752 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 753 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 754 Current Release: 755 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 756 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 757 7582) iASL Compiler/Disassembler and Tools: 759 760iASL: Added compiler support for the _WDG and_WED Microsoft predefined 761methods. These objects are defined by "Windows Instrumentation", and are not 762part of the ACPI spec. ACPICA BZ 860. 763 764AcpiExec: added option to disable the memory tracking mechanism. The -dt 765option will disable the tracking mechanism, which improves performance 766considerably. 767 768AcpiExec: Restructured the command line options into -d (disable) and -e 769(enable) options. 770 771---------------------------------------- 77228 April 2010. Summary of changes for version 20100428: 773 7741) ACPI CA Core Subsystem: 775 776Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 777including FADT-based and GPE Block Devices, execute any _PRW methods in the 778new table, and process any _Lxx/_Exx GPE methods in the new table. Any 779runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 780immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 781Devices. Provides compatibility with other ACPI implementations. Two new 782files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 783 784Fixed a regression introduced in version 20100331 within the table manager 785where initial table loading could fail. This was introduced in the fix for 786AcpiReallocateRootTable. Also, renamed some of fields in the table manager 787data structures to clarify their meaning and use. 788 789Fixed a possible allocation overrun during internal object copy in 790AcpiUtCopySimpleObject. The original code did not correctly handle the case 791where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 792 793Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 794possible access beyond end-of-allocation. Also, now fully validate descriptor 795(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 796 797Example Code and Data Size: These are the sizes for the OS-independent 798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 799debug version of the code includes the debug output trace mechanism and has a 800much larger code and data size. 801 802 Previous Release: 803 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 804 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 805 Current Release: 806 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 807 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 808 8092) iASL Compiler/Disassembler and Tools: 810 811iASL: Implemented Min/Max/Len/Gran validation for address resource 812descriptors. This change implements validation for the address fields that 813are common to all address-type resource descriptors. These checks are 814implemented: Checks for valid Min/Max, length within the Min/Max window, 815valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 816table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 817and aslrestype2.c files into five new files. ACPICA BZ 840. 818 819iASL: Added support for the _Wxx predefined names. This support was missing 820and these names were not recognized by the compiler as valid predefined 821names. ACPICA BZ 851. 822 823iASL: Added an error for all predefined names that are defined to return no 824value and thus must be implemented as Control Methods. These include all of 825the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 826names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 827 828iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 829ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 830dynamically loaded via the Load() operator. Also cleaned up output for the - 831ta and -tc options. ACPICA BZ 853. 832 833Tests: Added a new file with examples of extended iASL error checking. 834Demonstrates the advanced error checking ability of the iASL compiler. 835Available at tests/misc/badcode.asl. 836 837---------------------------------------- 83831 March 2010. Summary of changes for version 20100331: 839 8401) ACPI CA Core Subsystem: 841 842Completed a major update for the GPE support in order to improve support for 843shared GPEs and to simplify both host OS and ACPICA code. Added a reference 844count mechanism to support shared GPEs that require multiple device drivers. 845Several external interfaces have changed. One external interface has been 846removed. One new external interface was added. Most of the GPE external 847interfaces now use the GPE spinlock instead of the events mutex (and the 848Flags parameter for many GPE interfaces has been removed.) See the updated 849ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 850Wysocki. ACPICA BZ 831. 851 852Changed: 853 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 854Removed: 855 AcpiSetGpeType 856New: 857 AcpiSetGpe 858 859Implemented write support for DataTable operation regions. These regions are 860defined via the DataTableRegion() operator. Previously, only read support was 861implemented. The ACPI specification allows DataTableRegions to be read/write, 862however. 863 864Implemented a new subsystem option to force a copy of the DSDT to local 865memory. Optionally copy the entire DSDT to local memory (instead of simply 866mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 867the original DSDT, creating the need for this option. Default is FALSE, do 868not copy the DSDT. 869 870Implemented detection of a corrupted or replaced DSDT. This change adds 871support to detect a DSDT that has been corrupted and/or replaced from outside 872the OS (by firmware). This is typically catastrophic for the system, but has 873been seen on some machines. Once this problem has been detected, the DSDT 874copy option can be enabled via system configuration. Lin Ming, Bob Moore. 875 876Fixed two problems with AcpiReallocateRootTable during the root table copy. 877When copying the root table to the new allocation, the length used was 878incorrect. The new size was used instead of the current table size, meaning 879too much data was copied. Also, the count of available slots for ACPI tables 880was not set correctly. Alexey Starikovskiy, Bob Moore. 881 882Example Code and Data Size: These are the sizes for the OS-independent 883acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 884debug version of the code includes the debug output trace mechanism and has a 885much larger code and data size. 886 887 Previous Release: 888 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 889 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 890 Current Release: 891 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 892 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 893 8942) iASL Compiler/Disassembler and Tools: 895 896iASL: Implement limited typechecking for values returned from predefined 897control methods. The type of any returned static (unnamed) object is now 898validated. For example, Return(1). ACPICA BZ 786. 899 900iASL: Fixed a predefined name object verification regression. Fixes a problem 901introduced in version 20100304. An error is incorrectly generated if a 902predefined name is declared as a static named object with a value defined 903using the keywords "Zero", "One", or "Ones". Lin Ming. 904 905iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 906reducing the requested registry access rights. ACPICA BZ 842. 907 908Disassembler: fixed a possible fault when generating External() statements. 909Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 910(carat). Fixes a string length allocation calculation. Lin Ming. 911 912---------------------------------------- 91304 March 2010. Summary of changes for version 20100304: 914 9151) ACPI CA Core Subsystem: 916 917Fixed a possible problem with the AML Mutex handling function 918AcpiExReleaseMutex where the function could fault under the very rare 919condition when the interpreter has blocked, the interpreter lock is released, 920the interpreter is then reentered via the same thread, and attempts to 921acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 922Ming. 923 924Implemented additional configuration support for the AML "Debug Object". 925Output from the debug object can now be enabled via a global variable, 926AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 927This debug output is now available in the release version of ACPICA instead 928of just the debug version. Also, the entire debug output module can now be 929configured out of the ACPICA build if desired. One new file added, 930executer/exdebug.c. Lin Ming, Bob Moore. 931 932Added header support for the ACPI MCHI table (Management Controller Host 933Interface Table). This table was added in ACPI 4.0, but the defining document 934has only recently become available. 935 936Standardized output of integer values for ACPICA warnings/errors. Always use 9370x prefix for hex output, always use %u for unsigned integer decimal output. 938Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 939invocations.) These invocations were converted from the original 940ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 941 942Example Code and Data Size: These are the sizes for the OS-independent 943acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 944debug version of the code includes the debug output trace mechanism and has a 945much larger code and data size. 946 947 Previous Release: 948 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 949 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 950 Current Release: 951 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 952 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 953 9542) iASL Compiler/Disassembler and Tools: 955 956iASL: Implemented typechecking support for static (non-control method) 957predefined named objects that are declared with the Name() operator. For 958example, the type of this object is now validated to be of type Integer: 959Name(_BBN, 1). This change migrates the compiler to using the core predefined 960name table instead of maintaining a local version. Added a new file, 961aslpredef.c. ACPICA BZ 832. 962 963Disassembler: Added support for the ACPI 4.0 MCHI table. 964 965---------------------------------------- 96621 January 2010. Summary of changes for version 20100121: 967 9681) ACPI CA Core Subsystem: 969 970Added the 2010 copyright to all module headers and signons. This affects 971virtually every file in the ACPICA core subsystem, the iASL compiler, the 972tools/utilities, and the test suites. 973 974Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 975invocations of the _STA method. In the case where a specific _HID is 976requested, do not run _STA until a _HID match is found. This eliminates 977potentially dozens of _STA calls during a search for a particular device/HID, 978which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 979 980Implemented an additional repair for predefined method return values. Attempt 981to repair unexpected NULL elements within returned Package objects. Create an 982Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 983ACPICA BZ 818. Lin Ming, Bob Moore. 984 985Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 986code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 98764-bit AML integers). It is now obsolete and this change removes it from the 988ACPICA code base, replaced by UINT64. The original typedef has been retained 989for now for compatibility with existing device driver code. ACPICA BZ 824. 990 991Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 992the parse tree object. 993 994Added additional warning options for the gcc-4 generation. Updated the source 995accordingly. This includes some code restructuring to eliminate unreachable 996code, elimination of some gotos, elimination of unused return values, some 997additional casting, and removal of redundant declarations. 998 999Example Code and Data Size: These are the sizes for the OS-independent 1000acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1001debug version of the code includes the debug output trace mechanism and has a 1002much larger code and data size. 1003 1004 Previous Release: 1005 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1006 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1007 Current Release: 1008 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 1009 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 1010 10112) iASL Compiler/Disassembler and Tools: 1012 1013No functional changes for this release. 1014 1015---------------------------------------- 101614 December 2009. Summary of changes for version 20091214: 1017 10181) ACPI CA Core Subsystem: 1019 1020Enhanced automatic data type conversions for predefined name repairs. This 1021change expands the automatic repairs/conversions for predefined name return 1022values to make Integers, Strings, and Buffers fully interchangeable. Also, a 1023Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 1024module was completely restructured. Lin Ming, Bob Moore. 1025 1026Implemented automatic removal of null package elements during predefined name 1027repairs. This change will automatically remove embedded and trailing NULL 1028package elements from returned package objects that are defined to contain a 1029variable number of sub-packages. The driver is then presented with a package 1030with no null elements to deal with. ACPICA BZ 819. 1031 1032Implemented a repair for the predefined _FDE and _GTM names. The expected 1033return value for both names is a Buffer of 5 DWORDs. This repair fixes two 1034possible problems (both seen in the field), where a package of integers is 1035returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 1036 1037Implemented additional module-level code support. This change will properly 1038execute module-level code that is not at the root of the namespace (under a 1039Device object, etc.). Now executes the code within the current scope instead 1040of the root. ACPICA BZ 762. Lin Ming. 1041 1042Fixed possible mutex acquisition errors when running _REG methods. Fixes a 1043problem where mutex errors can occur when running a _REG method that is in 1044the same scope as a method-defined operation region or an operation region 1045under a module-level IF block. This type of code is rare, so the problem has 1046not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 1047 1048Fixed a possible memory leak during module-level code execution. An object 1049could be leaked for each block of executed module-level code if the 1050interpreter slack mode is enabled This change deletes any implicitly returned 1051object from the module-level code block. Lin Ming. 1052 1053Removed messages for successful predefined repair(s). The repair mechanism 1054was considered too wordy. Now, messages are only unconditionally emitted if 1055the return object cannot be repaired. Existing messages for successful 1056repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 1057 1058Example Code and Data Size: These are the sizes for the OS-independent 1059acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1060debug version of the code includes the debug output trace mechanism and has a 1061much larger code and data size. 1062 1063 Previous Release: 1064 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1065 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1066 Current Release: 1067 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 1068 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 1069 10702) iASL Compiler/Disassembler and Tools: 1071 1072iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 1073were no longer automatically removed at the termination of the compile. 1074 1075acpiexec: Implemented the -f option to specify default region fill value. 1076This option specifies the value used to initialize buffers that simulate 1077operation regions. Default value is zero. Useful for debugging problems that 1078depend on a specific initial value for a region or field. 1079 1080---------------------------------------- 108112 November 2009. Summary of changes for version 20091112: 1082 10831) ACPI CA Core Subsystem: 1084 1085Implemented a post-order callback to AcpiWalkNamespace. The existing 1086interface only has a pre-order callback. This change adds an additional 1087parameter for a post-order callback which will be more useful for bus scans. 1088ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1089 1090Modified the behavior of the operation region memory mapping cache for 1091SystemMemory. Ensure that the memory mappings created for operation regions 1092do not cross 4K page boundaries. Crossing a page boundary while mapping 1093regions can cause kernel warnings on some hosts if the pages have different 1094attributes. Such regions are probably BIOS bugs, and this is the workaround. 1095Linux BZ 14445. Lin Ming. 1096 1097Implemented an automatic repair for predefined methods that must return 1098sorted lists. This change will repair (by sorting) packages returned by _ALR, 1099_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1100and do not contain NULL package elements. Adds one new file, 1101namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1102 1103Fixed a possible fault during predefined name validation if a return Package 1104object contains NULL elements. Also adds a warning if a NULL element is 1105followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1106include repair or removal of all such NULL elements where possible. 1107 1108Implemented additional module-level executable AML code support. This change 1109will execute module-level code that is not at the root of the namespace 1110(under a Device object, etc.) at table load time. Module-level executable AML 1111code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1112 1113Implemented a new internal function to create Integer objects. This function 1114simplifies miscellaneous object creation code. ACPICA BZ 823. 1115 1116Reduced the severity of predefined repair messages, Warning to Info. Since 1117the object was successfully repaired, a warning is too severe. Reduced to an 1118info message for now. These messages may eventually be changed to debug-only. 1119ACPICA BZ 812. 1120 1121Example Code and Data Size: These are the sizes for the OS-independent 1122acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1123debug version of the code includes the debug output trace mechanism and has a 1124much larger code and data size. 1125 1126 Previous Release: 1127 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1128 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1129 Current Release: 1130 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1131 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1132 11332) iASL Compiler/Disassembler and Tools: 1134 1135iASL: Implemented Switch() with While(1) so that Break works correctly. This 1136change correctly implements the Switch operator with a surrounding While(1) 1137so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1138 1139iASL: Added a message if a package initializer list is shorter than package 1140length. Adds a new remark for a Package() declaration if an initializer list 1141exists, but is shorter than the declared length of the package. Although 1142technically legal, this is probably a coding error and it is seen in the 1143field. ACPICA BZ 815. Lin Ming, Bob Moore. 1144 1145iASL: Fixed a problem where the compiler could fault after the maximum number 1146of errors was reached (200). 1147 1148acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1149level set very high. 1150 1151---------------------------------------- 115213 October 2009. Summary of changes for version 20091013: 1153 11541) ACPI CA Core Subsystem: 1155 1156Fixed a problem where an Operation Region _REG method could be executed more 1157than once. If a custom address space handler is installed by the host before 1158the "initialize operation regions" phase of the ACPICA initialization, any 1159_REG methods for that address space could be executed twice. This change 1160fixes the problem. ACPICA BZ 427. Lin Ming. 1161 1162Fixed a possible memory leak for the Scope() ASL operator. When the exact 1163invocation of "Scope(\)" is executed (change scope to root), one internal 1164operand object was leaked. Lin Ming. 1165 1166Implemented a run-time repair for the _MAT predefined method. If the _MAT 1167return value is defined as a Field object in the AML, and the field 1168size is less than or equal to the default width of an integer (32 or 64),_MAT 1169can incorrectly return an Integer instead of a Buffer. ACPICA now 1170automatically repairs this problem. ACPICA BZ 810. 1171 1172Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1173"OEM Information" field is often incorrectly returned as an Integer with 1174value zero if the field is not supported by the platform. This is due to an 1175ambiguity in the ACPI specification. The field should always be a string. 1176ACPICA now automatically repairs this problem by returning a NULL string 1177within the returned Package. ACPICA BZ 807. 1178 1179Example Code and Data Size: These are the sizes for the OS-independent 1180acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1181debug version of the code includes the debug output trace mechanism and has a 1182much larger code and data size. 1183 1184 Previous Release: 1185 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1186 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1187 Current Release: 1188 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1189 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1190 11912) iASL Compiler/Disassembler and Tools: 1192 1193Disassembler: Fixed a problem where references to external symbols that 1194contained one or more parent-prefixes (carats) were not handled correctly, 1195possibly causing a fault. ACPICA BZ 806. Lin Ming. 1196 1197Disassembler: Restructured the code so that all functions that handle 1198external symbols are in a single module. One new file is added, 1199common/dmextern.c. 1200 1201AML Debugger: Added a max count argument for the Batch command (which 1202executes multiple predefined methods within the namespace.) 1203 1204iASL: Updated the compiler documentation (User Reference.) Available at 1205http://www.acpica.org/documentation/. ACPICA BZ 750. 1206 1207AcpiXtract: Updated for Lint and other formatting changes. Close all open 1208files. 1209 1210---------------------------------------- 121103 September 2009. Summary of changes for version 20090903: 1212 12131) ACPI CA Core Subsystem: 1214 1215For Windows Vista compatibility, added the automatic execution of an _INI 1216method located at the namespace root (\_INI). This method is executed at 1217table load time. This support is in addition to the automatic execution of 1218\_SB._INI. Lin Ming. 1219 1220Fixed a possible memory leak in the interpreter for AML package objects if 1221the package initializer list is longer than the defined size of the package. 1222This apparently can only happen if the BIOS changes the package size on the 1223fly (seen in a _PSS object), as ASL compilers do not allow this. The 1224interpreter will truncate the package to the defined size (and issue an error 1225message), but previously could leave the extra objects undeleted if they were 1226pre-created during the argument processing (such is the case if the package 1227consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1228 1229Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1230This has been reported in the field. Previously, ACPICA would zero out the 1231buffer/string. Now, the operation is treated as a noop. Provides Windows 1232compatibility. ACPICA BZ 803. Lin Ming. 1233 1234Removed an extraneous error message for ASL constructs of the form 1235Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1236are seen in many BIOSs and are once again treated as NOOPs and no error is 1237emitted when they are encountered. ACPICA BZ 785. 1238 1239Fixed an extraneous warning message if a _DSM reserved method returns a 1240Package object. _DSM can return any type of object, so validation on the 1241return type cannot be performed. ACPICA BZ 802. 1242 1243Example Code and Data Size: These are the sizes for the OS-independent 1244acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1245debug version of the code includes the debug output trace mechanism and has a 1246much larger code and data size. 1247 1248 Previous Release: 1249 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1250 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1251 Current Release: 1252 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1253 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1254 12552) iASL Compiler/Disassembler and Tools: 1256 1257iASL: Fixed a problem with the use of the Alias operator and Resource 1258Templates. The correct alias is now constructed and no error is emitted. 1259ACPICA BZ 738. 1260 1261iASL: Implemented the -I option to specify additional search directories for 1262include files. Allows multiple additional search paths for include files. 1263Directories are searched in the order specified on the command line (after 1264the local directory is searched.) ACPICA BZ 800. 1265 1266iASL: Fixed a problem where the full pathname for include files was not 1267emitted for warnings/errors. This caused the IDE support to not work 1268properly. ACPICA BZ 765. 1269 1270iASL: Implemented the -@ option to specify a Windows-style response file 1271containing additional command line options. ACPICA BZ 801. 1272 1273AcpiExec: Added support to load multiple AML files simultaneously (such as a 1274DSDT and multiple SSDTs). Also added support for wildcards within the AML 1275pathname. These features allow all machine tables to be easily loaded and 1276debugged together. ACPICA BZ 804. 1277 1278Disassembler: Added missing support for disassembly of HEST table Error Bank 1279subtables. 1280 1281---------------------------------------- 128230 July 2009. Summary of changes for version 20090730: 1283 1284The ACPI 4.0 implementation for ACPICA is complete with this release. 1285 12861) ACPI CA Core Subsystem: 1287 1288ACPI 4.0: Added header file support for all new and changed ACPI tables. 1289Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1290for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1291EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1292have been some ACPI 4.0 changes to other existing tables. Split the large 1293actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1294 1295ACPI 4.0: Implemented predefined name validation for all new names. There are 129631 new names in ACPI 4.0. The predefined validation module was split into two 1297files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1298 1299Implemented support for so-called "module-level executable code". This is 1300executable AML code that exists outside of any control method and is intended 1301to be executed at table load time. Although illegal since ACPI 2.0, this type 1302of code still exists and is apparently still being created. Blocks of this 1303code are now detected and executed as intended. Currently, the code blocks 1304must exist under either an If, Else, or While construct; these are the 1305typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1306 1307Implemented an automatic dynamic repair for predefined names that return 1308nested Package objects. This applies to predefined names that are defined to 1309return a variable-length Package of sub-packages. If the number of sub- 1310packages is one, BIOS code is occasionally seen that creates a simple single 1311package with no sub-packages. This code attempts to fix the problem by 1312wrapping a new package object around the existing package. These methods can 1313be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1314790. 1315 1316Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1317The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1318BZ 793. 1319 1320Fixed a problem with AcpiReset where the reset would silently fail if the 1321register was one of the protected I/O ports. AcpiReset now bypasses the port 1322validation mechanism. This may eventually be driven into the AcpiRead/Write 1323interfaces. 1324 1325Fixed a regression related to the recent update of the AcpiRead/Write 1326interfaces. A sleep/suspend could fail if the optional PM2 Control register 1327does not exist during an attempt to write the Bus Master Arbitration bit. 1328(However, some hosts already delete the code that writes this bit, and the 1329code may in fact be obsolete at this date.) ACPICA BZ 799. 1330 1331Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1332in succession. ACPICA BZ 795. 1333 1334Example Code and Data Size: These are the sizes for the OS-independent 1335acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1336debug version of the code includes the debug output trace mechanism and has a 1337much larger code and data size. 1338 1339 Previous Release: 1340 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1341 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1342 Current Release: 1343 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1344 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1345 13462) iASL Compiler/Disassembler and Tools: 1347 1348ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1349changes to existing tables. ACPICA BZ 775. 1350 1351---------------------------------------- 135225 June 2009. Summary of changes for version 20090625: 1353 1354The ACPI 4.0 Specification was released on June 16 and is available at 1355www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1356continue for the next few releases. 1357 13581) ACPI CA Core Subsystem: 1359 1360ACPI 4.0: Implemented interpreter support for the IPMI operation region 1361address space. Includes support for bi-directional data buffers and an IPMI 1362address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1363773. Lin Ming. 1364 1365ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1366support in both the header files and the disassembler. 1367 1368Completed a major update for the AcpiGetObjectInfo external interface. 1369Changes include: 1370 - Support for variable, unlimited length HID, UID, and CID strings. 1371 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1372 - Call the _SxW power methods on behalf of a device object. 1373 - Determine if a device is a PCI root bridge. 1374 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1375These changes will require an update to all callers of this interface. See 1376the updated ACPICA Programmer Reference for details. One new source file has 1377been added - utilities/utids.c. ACPICA BZ 368, 780. 1378 1379Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1380transfers. The Value parameter has been extended from 32 bits to 64 bits in 1381order to support new ACPI 4.0 tables. These changes will require an update to 1382all callers of these interfaces. See the ACPICA Programmer Reference for 1383details. ACPICA BZ 768. 1384 1385Fixed several problems with AcpiAttachData. The handler was not invoked when 1386the host node was deleted. The data sub-object was not automatically deleted 1387when the host node was deleted. The interface to the handler had an unused 1388parameter, this was removed. ACPICA BZ 778. 1389 1390Enhanced the function that dumps ACPI table headers. All non-printable 1391characters in the string fields are now replaced with '?' (Signature, OemId, 1392OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1393these fields are occasionally seen in the field. ACPICA BZ 788. 1394 1395Fixed a problem with predefined method repair code where the code that 1396attempts to repair/convert an object of incorrect type is only executed on 1397the first time the predefined method is called. The mechanism that disables 1398warnings on subsequent calls was interfering with the repair mechanism. 1399ACPICA BZ 781. 1400 1401Fixed a possible memory leak in the predefined validation/repair code when a 1402buffer is automatically converted to an expected string object. 1403 1404Removed obsolete 16-bit files from the distribution and from the current git 1405tree head. ACPICA BZ 776. 1406 1407Example Code and Data Size: These are the sizes for the OS-independent 1408acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1409debug version of the code includes the debug output trace mechanism and has a 1410much larger code and data size. 1411 1412 Previous Release: 1413 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1414 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1415 Current Release: 1416 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1417 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1418 14192) iASL Compiler/Disassembler and Tools: 1420 1421ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1422operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1423 1424ACPI 4.0: iASL - implemented compile-time validation support for all new 1425predefined names and control methods (31 total). ACPICA BZ 769. 1426 1427---------------------------------------- 142821 May 2009. Summary of changes for version 20090521: 1429 14301) ACPI CA Core Subsystem: 1431 1432Disabled the preservation of the SCI enable bit in the PM1 control register. 1433The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1434a "preserved" bit - "OSPM always preserves this bit position", section 14354.7.3.2.1. However, some machines fail if this bit is in fact preserved 1436because the bit needs to be explicitly set by the OS as a workaround. No 1437machines fail if the bit is not preserved. Therefore, ACPICA no longer 1438attempts to preserve this bit. 1439 1440Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1441incorrectly formed _PRT package could cause a fault. Added validation to 1442ensure that each package element is actually a sub-package. 1443 1444Implemented a new interface to install or override a single control method, 1445AcpiInstallMethod. This interface is useful when debugging in order to repair 1446an existing method or to install a missing method without having to override 1447the entire ACPI table. See the ACPICA Programmer Reference for use and 1448examples. Lin Ming, Bob Moore. 1449 1450Fixed several reference count issues with the DdbHandle object that is 1451created from a Load or LoadTable operator. Prevent premature deletion of the 1452object. Also, mark the object as invalid once the table has been unloaded. 1453This is needed because the handle itself may not be deleted after the table 1454unload, depending on whether it has been stored in a named object by the 1455caller. Lin Ming. 1456 1457Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1458mutexes of the same sync level are acquired but then not released in strict 1459opposite order, the internally maintained Current Sync Level becomes confused 1460and can cause subsequent execution errors. ACPICA BZ 471. 1461 1462Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1463specification has been changed to make the SyncLevel for mutex objects more 1464useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1465same as the current sync level. This makes more sense than the previous rule 1466(SyncLevel less than or equal). This change updates the code to match the 1467specification. 1468 1469Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1470(local) cache must be locked during all cache object deletions. Andrew 1471Baumann. 1472 1473Updated the Load operator to use operation region interfaces. This replaces 1474direct memory mapping with region access calls. Now, all region accesses go 1475through the installed region handler as they should. 1476 1477Simplified and optimized the NsGetNextNode function. Reduced parameter count 1478and reduced code for this frequently used function. 1479 1480Example Code and Data Size: These are the sizes for the OS-independent 1481acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1482debug version of the code includes the debug output trace mechanism and has a 1483much larger code and data size. 1484 1485 Previous Release: 1486 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1487 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1488 Current Release: 1489 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1490 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1491 14922) iASL Compiler/Disassembler and Tools: 1493 1494Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1495with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1496after an invalid sub-table ID. 1497 1498---------------------------------------- 149922 April 2009. Summary of changes for version 20090422: 1500 15011) ACPI CA Core Subsystem: 1502 1503Fixed a compatibility issue with the recently released I/O port protection 1504mechanism. For windows compatibility, 1) On a port protection violation, 1505simply ignore the request and do not return an exception (allow the control 1506method to continue execution.) 2) If only part of the request overlaps a 1507protected port, read/write the individual ports that are not protected. Linux 1508BZ 13036. Lin Ming 1509 1510Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1511breaks into the AML debugger if the debugger is present. This matches the 1512ACPI-defined behavior. 1513 1514Fixed several possible warnings related to the use of the configurable 1515ACPI_THREAD_ID. This type can now be configured as either an integer or a 1516pointer with no warnings. Also fixes several warnings in printf-like 1517statements for the 64-bit build when the type is configured as a pointer. 1518ACPICA BZ 766, 767. 1519 1520Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1521warning options.) Examples include printf formats, aliasing, unused globals, 1522missing prototypes, missing switch default statements, use of non-ANSI 1523library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1524a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1525 1526Example Code and Data Size: These are the sizes for the OS-independent 1527acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1528debug version of the code includes the debug output trace mechanism and has a 1529much larger code and data size. 1530 1531 Previous Release: 1532 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1533 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1534 Current Release: 1535 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1536 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1537 15382) iASL Compiler/Disassembler and Tools: 1539 1540iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1541the 64-bit build. 1542 1543iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1544correctly digest Windows/DOS formatted files (with CR/LF). 1545 1546iASL: Added a new option for "quiet mode" (-va) that produces only the 1547compilation summary, not individual errors and warnings. Useful for large 1548batch compilations. 1549 1550AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1551timeout that can be used to detect hang conditions during execution of AML 1552code (includes both internal semaphores and AML-defined mutexes and events.) 1553 1554Added new makefiles for the generation of acpica in a generic unix-like 1555environment. These makefiles are intended to generate the acpica tools and 1556utilities from the original acpica git source tree structure. 1557 1558Test Suites: Updated and cleaned up the documentation files. Updated the 1559copyrights to 2009, affecting all source files. Use the new version of iASL 1560with quiet mode. Increased the number of available semaphores in the Windows 1561OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1562an alternate implementation of the semaphore timeout to allow aslts to 1563execute fully on Cygwin. 1564 1565---------------------------------------- 156620 March 2009. Summary of changes for version 20090320: 1567 15681) ACPI CA Core Subsystem: 1569 1570Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1571unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1572namespace walks (readers), but block a dynamic table unload until it can gain 1573exclusive write access to the namespace. This fixes a problem where a table 1574unload could (possibly catastrophically) delete the portion of the namespace 1575that is currently being examined by a walk. Adds a new file, utlock.c, that 1576implements the reader/writer lock mechanism. ACPICA BZ 749. 1577 1578Fixed a regression introduced in version 20090220 where a change to the FADT 1579handling could cause the ACPICA subsystem to access non-existent I/O ports. 1580 1581Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1582FADT can contain both 32-bit and 64-bit versions of these addresses. 1583Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1584versions were valid, but not equal, the 64-bit version was used. This was 1585found to cause some machines to fail. Now, in this case, the 32-bit version 1586is used instead. This now matches the Windows behavior. 1587 1588Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1589compatibility and protects the standard PC I/O ports from access via AML 1590code. Adds a new file, hwvalid.c 1591 1592Fixed a possible extraneous warning message from the FADT support. The 1593message warns of a 32/64 length mismatch between the legacy and GAS 1594definitions for a register. 1595 1596Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1597made obsolete by the port protection mechanism above. It was previously used 1598to validate the entire address range of an operation region, which could be 1599incorrect if the range included illegal ports, but fields within the 1600operation region did not actually access those ports. Validation is now 1601performed on a per-field basis instead of the entire region. 1602 1603Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1604Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1605means a read/modify/write when writing to the register. However, for status 1606registers, writing a one means clear the event. Writing a zero means preserve 1607the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1608and the ACPICA code now simply always writes a zero to the ignored bit. 1609 1610Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1611per the ACPI specification, for the control registers, preserve 1612(read/modify/write) all bits that are defined as either reserved or ignored. 1613 1614Updated the handling of write-only bits in the PM1 A/B Control Registers. 1615When reading the register, zero the write-only bits as per the ACPI spec. 1616ACPICA BZ 443. Lin Ming. 1617 1618Removed "Linux" from the list of supported _OSI strings. Linux no longer 1619wants to reply true to this request. The Windows strings are the only paths 1620through the AML that are tested and known to work properly. 1621 1622 Previous Release: 1623 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1624 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1625 Current Release: 1626 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1627 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1628 16292) iASL Compiler/Disassembler and Tools: 1630 1631Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1632aetables.c 1633 1634---------------------------------------- 163520 February 2009. Summary of changes for version 20090220: 1636 16371) ACPI CA Core Subsystem: 1638 1639Optimized the ACPI register locking. Removed locking for reads from the ACPI 1640bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1641not required when reading the single-bit registers. The 1642AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1643This will improve performance for reads on these registers. ACPICA BZ 760. 1644 1645Fixed the parameter validation for AcpiRead/Write. Now return 1646AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1647the register has an address of zero. Previously, these cases simply returned 1648AE_OK. For optional registers such as PM1B status/enable/control, the caller 1649should check for a valid register address before calling. ACPICA BZ 748. 1650 1651Renamed the external ACPI bit register access functions. Renamed 1652AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1653functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1654Also, restructured the code for these functions by simplifying the code path 1655and condensing duplicate code to reduce code size. 1656 1657Added new functions to transparently handle the possibly split PM1 A/B 1658registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1659now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1660746. 1661 1662Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1663This function writes both of the PM1 control registers (A/B). These registers 1664are different than the PM1 A/B status and enable registers in that different 1665values can be written to the A/B registers. Most notably, the SLP_TYP bits 1666can be different, as per the values returned from the _Sx predefined methods. 1667 1668Removed an extra register write within AcpiHwClearAcpiStatus. This function 1669was writing an optional PM1B status register twice. The existing call to the 1670low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1671register. ACPICA BZ 751. 1672 1673Split out the PM1 Status registers from the FADT. Added new globals for these 1674registers (A/B), similar to the way the PM1 Enable registers are handled. 1675Instead of overloading the FADT Event Register blocks. This makes the code 1676clearer and less prone to error. 1677 1678Fixed the warning message for when the platform contains too many ACPI tables 1679for the default size of the global root table data structure. The calculation 1680for the truncation value was incorrect. 1681 1682Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1683obsolete macro, since it is now a simple reference to ->common.type. There 1684were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1685 1686Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1687TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1688simply SLEEP_TYPE. ACPICA BZ 754. 1689 1690Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1691function is only needed on 64-bit host operating systems and is thus not 1692included for 32-bit hosts. 1693 1694Debug output: print the input and result for invocations of the _OSI reserved 1695control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1696verbosity of this debug level. Len Brown. 1697 1698Example Code and Data Size: These are the sizes for the OS-independent 1699acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1700debug version of the code includes the debug output trace mechanism and has a 1701much larger code and data size. 1702 1703 Previous Release: 1704 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1705 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1706 Current Release: 1707 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1708 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1709 17102) iASL Compiler/Disassembler and Tools: 1711 1712Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1713various legal performance profiles. 1714 1715---------------------------------------- 171623 January 2009. Summary of changes for version 20090123: 1717 17181) ACPI CA Core Subsystem: 1719 1720Added the 2009 copyright to all module headers and signons. This affects 1721virtually every file in the ACPICA core subsystem, the iASL compiler, and 1722the tools/utilities. 1723 1724Implemented a change to allow the host to override any ACPI table, including 1725dynamically loaded tables. Previously, only the DSDT could be replaced by the 1726host. With this change, the AcpiOsTableOverride interface is called for each 1727table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1728a table is dynamically loaded via the AML Load operator. 1729 1730Updated FADT flag definitions, especially the Boot Architecture flags. 1731 1732Debugger: For the Find command, automatically pad the input ACPI name with 1733underscores if the name is shorter than 4 characters. This enables a match 1734with the actual namespace entry which is itself padded with underscores. 1735 1736Example Code and Data Size: These are the sizes for the OS-independent 1737acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1738debug version of the code includes the debug output trace mechanism and has a 1739much larger code and data size. 1740 1741 Previous Release: 1742 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1743 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1744 Current Release: 1745 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1746 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1747 17482) iASL Compiler/Disassembler and Tools: 1749 1750Fix build error under Bison-2.4. 1751 1752Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1753flags. Now decode all flags, regardless of the FADT version. Flag output 1754includes the FADT version which first defined each flag. 1755 1756The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1757DSDT). Windows only. 1758 1759---------------------------------------- 176004 December 2008. Summary of changes for version 20081204: 1761 17621) ACPI CA Core Subsystem: 1763 1764The ACPICA Programmer Reference has been completely updated and revamped for 1765this release. This includes updates to the external interfaces, OSL 1766interfaces, the overview sections, and the debugger reference. 1767 1768Several new ACPICA interfaces have been implemented and documented in the 1769programmer reference: 1770AcpiReset - Writes the reset value to the FADT-defined reset register. 1771AcpiDisableAllGpes - Disable all available GPEs. 1772AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1773AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1774AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1775AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1776AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1777 1778Most of the public ACPI hardware-related interfaces have been moved to a new 1779file, components/hardware/hwxface.c 1780 1781Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1782register lengths within the FADT are now used, and the low level ACPI 1783register access no longer hardcodes the ACPI register lengths. Given that 1784there may be some risk in actually trusting the FADT register lengths, a run- 1785time option was added to fall back to the default hardcoded lengths if the 1786FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1787option is set to true for now, and a warning is issued if a suspicious FADT 1788register length is overridden with the default value. 1789 1790Fixed a reference count issue in NsRepairObject. This problem was introduced 1791in version 20081031 as part of a fix to repair Buffer objects within 1792Packages. Lin Ming. 1793 1794Added semaphore support to the Linux/Unix application OS-services layer 1795(OSL). ACPICA BZ 448. Lin Ming. 1796 1797Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1798be implemented in the OSL, or will binary semaphores be used instead. 1799 1800Example Code and Data Size: These are the sizes for the OS-independent 1801acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1802debug version of the code includes the debug output trace mechanism and has a 1803much larger code and data size. 1804 1805 Previous Release: 1806 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1807 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1808 Current Release: 1809 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1810 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1811 18122) iASL Compiler/Disassembler and Tools: 1813 1814iASL: Completed the '-e' option to include additional ACPI tables in order to 1815aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1816Ming. 1817 1818iASL: Removed the "named object in while loop" error. The compiler cannot 1819determine how many times a loop will execute. ACPICA BZ 730. 1820 1821Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1822BZ 743. 1823 1824Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1825 1826---------------------------------------- 182731 October 2008. Summary of changes for version 20081031: 1828 18291) ACPI CA Core Subsystem: 1830 1831Restructured the ACPICA header files into public/private. acpi.h now includes 1832only the "public" acpica headers. All other acpica headers are "private" and 1833should not be included by acpica users. One new file, accommon.h is used to 1834include the commonly used private headers for acpica code generation. Future 1835plans include moving all private headers to a new subdirectory. 1836 1837Implemented an automatic Buffer->String return value conversion for 1838predefined ACPI methods. For these methods (such as _BIF), added automatic 1839conversion for return objects that are required to be a String, but a Buffer 1840was found instead. This can happen when reading string battery data from an 1841operation region, because it used to be difficult to convert the data from 1842buffer to string from within the ASL. Ensures that the host OS is provided 1843with a valid null-terminated string. Linux BZ 11822. 1844 1845Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1846into two: one for the 32-bit vector, another for the 64-bit vector. This is 1847required because the host OS must setup the wake much differently for each 1848vector (real vs. protected mode, etc.) and the interface itself should not be 1849deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1850interface, as it served no purpose (only the firmware reads the vector, OS 1851only writes the vector.) ACPICA BZ 731. 1852 1853Implemented a mechanism to escape infinite AML While() loops. Added a loop 1854counter to force exit from AML While loops if the count becomes too large. 1855This can occur in poorly written AML when the hardware does not respond 1856within a while loop and the loop does not implement a timeout. The maximum 1857loop count is configurable. A new exception code is returned when a loop is 1858broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1859 1860Optimized the execution of AML While loops. Previously, a control state 1861object was allocated and freed for each execution of the loop. The 1862optimization is to simply reuse the control state for each iteration. This 1863speeds up the raw loop execution time by about 5%. 1864 1865Enhanced the implicit return mechanism. For Windows compatibility, return an 1866implicit integer of value zero for methods that contain no executable code. 1867Such methods are seen in the field as stubs (presumably), and can cause 1868drivers to fail if they expect a return value. Lin Ming. 1869 1870Allow multiple backslashes as root prefixes in namepaths. In a fully 1871qualified namepath, allow multiple backslash prefixes. This can happen (and 1872is seen in the field) because of the use of a double-backslash in strings 1873(since backslash is the escape character) causing confusion. ACPICA BZ 739 1874Lin Ming. 1875 1876Emit a warning if two different FACS or DSDT tables are discovered in the 1877FADT. Checks if there are two valid but different addresses for the FACS and 1878DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1879 1880Consolidated the method argument count validation code. Merged the code that 1881validates control method argument counts into the predefined validation 1882module. Eliminates possible multiple warnings for incorrect argument counts. 1883 1884Implemented ACPICA example code. Includes code for ACPICA initialization, 1885handler installation, and calling a control method. Available at 1886source/tools/examples. 1887 1888Added a global pointer for FACS table to simplify internal FACS access. Use 1889the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1890This simplifies the code for the Global Lock and the Firmware Waking 1891Vector(s). 1892 1893Example Code and Data Size: These are the sizes for the OS-independent 1894acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1895debug version of the code includes the debug output trace mechanism and has a 1896much larger code and data size. 1897 1898 Previous Release: 1899 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1900 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1901 Current Release: 1902 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1903 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1904 19052) iASL Compiler/Disassembler and Tools: 1906 1907iASL: Improved disassembly of external method calls. Added the -e option to 1908allow the inclusion of additional ACPI tables to help with the disassembly of 1909method invocations and the generation of external declarations during the 1910disassembly. Certain external method invocations cannot be disassembled 1911properly without the actual declaration of the method. Use the -e option to 1912include the table where the external method(s) are actually declared. Most 1913useful for disassembling SSDTs that make method calls back to the master 1914DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1915-e dsdt.aml ssdt1.aml 1916 1917iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1918problem where the use of an alias within a namepath would result in a not 1919found error or cause the compiler to fault. Also now allows forward 1920references from the Alias operator itself. ACPICA BZ 738. 1921 1922---------------------------------------- 192326 September 2008. Summary of changes for version 20080926: 1924 19251) ACPI CA Core Subsystem: 1926 1927Designed and implemented a mechanism to validate predefined ACPI methods and 1928objects. This code validates the predefined ACPI objects (objects whose names 1929start with underscore) that appear in the namespace, at the time they are 1930evaluated. The argument count and the type of the returned object are 1931validated against the ACPI specification. The purpose of this validation is 1932to detect problems with the BIOS-implemented predefined ACPI objects before 1933the results are returned to the ACPI-related drivers. Future enhancements may 1934include actual repair of incorrect return objects where possible. Two new 1935files are nspredef.c and acpredef.h. 1936 1937Fixed a fault in the AML parser if a memory allocation fails during the Op 1938completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1939 1940Fixed an issue with implicit return compatibility. This change improves the 1941implicit return mechanism to be more compatible with the MS interpreter. Lin 1942Ming, ACPICA BZ 349. 1943 1944Implemented support for zero-length buffer-to-string conversions. Allow zero 1945length strings during interpreter buffer-to-string conversions. For example, 1946during the ToDecimalString and ToHexString operators, as well as implicit 1947conversions. Fiodor Suietov, ACPICA BZ 585. 1948 1949Fixed two possible memory leaks in the error exit paths of 1950AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1951similar in that they use a stack of state objects in order to eliminate 1952recursion. The stack must be fully unwound and deallocated if an error 1953occurs. Lin Ming. ACPICA BZ 383. 1954 1955Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1956ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1957Moore ACPICA BZ 442. 1958 1959Removed the obsolete version number in module headers. Removed the 1960"$Revision" number that appeared in each module header. This version number 1961was useful under SourceSafe and CVS, but has no meaning under git. It is not 1962only incorrect, it could also be misleading. 1963 1964Example Code and Data Size: These are the sizes for the OS-independent 1965acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1966debug version of the code includes the debug output trace mechanism and has a 1967much larger code and data size. 1968 1969 Previous Release: 1970 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1971 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1972 Current Release: 1973 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1974 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1975 1976---------------------------------------- 197729 August 2008. Summary of changes for version 20080829: 1978 19791) ACPI CA Core Subsystem: 1980 1981Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1982Reference. Changes include the elimination of cheating on the Object field 1983for the DdbHandle subtype, addition of a reference class field to 1984differentiate the various reference types (instead of an AML opcode), and the 1985cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1986 1987Reduce an error to a warning for an incorrect method argument count. 1988Previously aborted with an error if too few arguments were passed to a 1989control method via the external ACPICA interface. Now issue a warning instead 1990and continue. Handles the case where the method inadvertently declares too 1991many arguments, but does not actually use the extra ones. Applies mainly to 1992the predefined methods. Lin Ming. Linux BZ 11032. 1993 1994Disallow the evaluation of named object types with no intrinsic value. Return 1995AE_TYPE for objects that have no value and therefore evaluation is undefined: 1996Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1997these types were allowed, but an exception would be generated at some point 1998during the evaluation. Now, the error is generated up front. 1999 2000Fixed a possible memory leak in the AcpiNsGetExternalPathname function 2001(nsnames.c). Fixes a leak in the error exit path. 2002 2003Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 2004levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 2005interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 2006ACPI_LV_EVENTS. 2007 2008Removed obsolete and/or unused exception codes from the acexcep.h header. 2009There is the possibility that certain device drivers may be affected if they 2010use any of these exceptions. 2011 2012The ACPICA documentation has been added to the public git source tree, under 2013acpica/documents. Included are the ACPICA programmer reference, the iASL 2014compiler reference, and the changes.txt release logfile. 2015 2016Example Code and Data Size: These are the sizes for the OS-independent 2017acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2018debug version of the code includes the debug output trace mechanism and has a 2019much larger code and data size. 2020 2021 Previous Release: 2022 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2023 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2024 Current Release: 2025 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2026 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 2027 20282) iASL Compiler/Disassembler and Tools: 2029 2030Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 2031defines _SCP with 3 arguments. Previous versions defined it with only 1 2032argument. iASL now allows both definitions. 2033 2034iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2035length subtables when disassembling ACPI tables. Also fixed a couple of 2036errors where a full 16-bit table type field was not extracted from the input 2037properly. 2038 2039acpisrc: Improve comment counting mechanism for generating source code 2040statistics. Count first and last lines of multi-line comments as whitespace, 2041not comment lines. Handle Linux legal header in addition to standard acpica 2042header. 2043 2044---------------------------------------- 2045 204629 July 2008. Summary of changes for version 20080729: 2047 20481) ACPI CA Core Subsystem: 2049 2050Fix a possible deadlock in the GPE dispatch. Remove call to 2051AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 2052to acquire the GPE lock but can deadlock since the GPE lock is already held 2053at dispatch time. This code was introduced in version 20060831 as a response 2054to Linux BZ 6881 and has since been removed from Linux. 2055 2056Add a function to dereference returned reference objects. Examines the return 2057object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2058automatically dereferenced in an attempt to return something useful (these 2059reference types cannot be converted into an external ACPI_OBJECT.) Provides 2060MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2061 2062x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2063subtables for the MADT and one new subtable for the SRAT. Includes 2064disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2065Specification, June 2008. 2066 2067Additional error checking for pathname utilities. Add error check after all 2068calls to AcpiNsGetPathnameLength. Add status return from 2069AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2070to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2071 2072Return status from the global init function AcpiUtGlobalInitialize. This is 2073used by both the kernel subsystem and the utilities such as iASL compiler. 2074The function could possibly fail when the caches are initialized. Yang Yi. 2075 2076Add a function to decode reference object types to strings. Created for 2077improved error messages. 2078 2079Improve object conversion error messages. Better error messages during object 2080conversion from internal to the external ACPI_OBJECT. Used for external calls 2081to AcpiEvaluateObject. 2082 2083Example Code and Data Size: These are the sizes for the OS-independent 2084acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2085debug version of the code includes the debug output trace mechanism and has a 2086much larger code and data size. 2087 2088 Previous Release: 2089 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2090 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2091 Current Release: 2092 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2093 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2094 20952) iASL Compiler/Disassembler and Tools: 2096 2097Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2098introduced in version 20080701. If the object being evaluated (via execute 2099command) is not a method, the debugger can hang while trying to obtain non- 2100existent parameters. 2101 2102iASL: relax error for using reserved "_T_x" identifiers. These names can 2103appear in a disassembled ASL file if they were emitted by the original 2104compiler. Instead of issuing an error or warning and forcing the user to 2105manually change these names, issue a remark instead. 2106 2107iASL: error if named object created in while loop. Emit an error if any named 2108object is created within a While loop. If allowed, this code will generate a 2109run-time error on the second iteration of the loop when an attempt is made to 2110create the same named object twice. ACPICA bugzilla 730. 2111 2112iASL: Support absolute pathnames for include files. Add support for absolute 2113pathnames within the Include operator. previously, only relative pathnames 2114were supported. 2115 2116iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2117The ACPI spec requires one interrupt minimum. BZ 423 2118 2119iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2120Handles the case for the Interrupt Resource Descriptor where 2121the ResourceSource argument is omitted but ResourceSourceIndex 2122is present. Now leave room for the Index. BZ 426 2123 2124iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2125where an error message is emitted if the target does not exist. BZ 516 2126 2127iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2128(get ACPI tables on Windows). This was apparently broken in version 20070919. 2129 2130AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2131the EOF happens immediately after the last table in the input file. Print 2132completion message. Previously, no message was displayed in this case. 2133 2134---------------------------------------- 213501 July 2008. Summary of changes for version 20080701: 2136 21370) Git source tree / acpica.org 2138 2139Fixed a problem where a git-clone from http would not transfer the entire 2140source tree. 2141 21421) ACPI CA Core Subsystem: 2143 2144Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2145enable bit. Now performs a read-change-write of the enable register instead 2146of simply writing out the cached enable mask. This will prevent inadvertent 2147enabling of GPEs if a rogue GPE is received during initialization (before GPE 2148handlers are installed.) 2149 2150Implemented a copy for dynamically loaded tables. Previously, dynamically 2151loaded tables were simply mapped - but on some machines this memory is 2152corrupted after suspend. Now copy the table to a local buffer. For the 2153OpRegion case, added checksum verify. Use the table length from the table 2154header, not the region length. For the Buffer case, use the table length 2155also. Dennis Noordsij, Bob Moore. BZ 10734 2156 2157Fixed a problem where the same ACPI table could not be dynamically loaded and 2158unloaded more than once. Without this change, a table cannot be loaded again 2159once it has been loaded/unloaded one time. The current mechanism does not 2160unregister a table upon an unload. During a load, if the same table is found, 2161this no longer returns an exception. BZ 722 2162 2163Fixed a problem where the wrong descriptor length was calculated for the 2164EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2165are calculated as 12 bytes long, but the actual length in the internal 2166descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2167by Linn Crosetto. BZ 728 2168 2169Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2170by Load() did not have its reference count decremented during unload, leading 2171to a memory leak. Lin Ming. BZ 727 2172 2173Fixed a possible memory leak when deleting thermal/processor objects. Any 2174associated notify handlers (and objects) were not being deleted. Fiodor 2175Suietov. BZ 506 2176 2177Fixed the ordering of the ASCII names in the global mutex table to match the 2178actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2179Vegard Nossum. BZ 726 2180 2181Enhanced the AcpiGetObjectInfo interface to return the number of required 2182arguments if the object is a control method. Added this call to the debugger 2183so the proper number of default arguments are passed to a method. This 2184prevents a warning when executing methods from AcpiExec. 2185 2186Added a check for an invalid handle in AcpiGetObjectInfo. Return 2187AE_BAD_PARAMETER if input handle is invalid. BZ 474 2188 2189Fixed an extraneous warning from exconfig.c on the 64-bit build. 2190 2191Example Code and Data Size: These are the sizes for the OS-independent 2192acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2193debug version of the code includes the debug output trace mechanism and has a 2194much larger code and data size. 2195 2196 Previous Release: 2197 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2198 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2199 Current Release: 2200 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2201 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2202 22032) iASL Compiler/Disassembler and Tools: 2204 2205iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2206resource descriptor names. 2207 2208iASL: Detect invalid ASCII characters in input (windows version). Removed the 2209"-CF" flag from the flex compile, enables correct detection of non-ASCII 2210characters in the input. BZ 441 2211 2212iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2213"result of operation not used" warning when the DDB handle returned from 2214LoadTable is not used. The warning is not needed. BZ 590 2215 2216AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2217pass address of table to the AML. Added option to disable OpRegion simulation 2218to allow creation of an OpRegion with a real address that was passed to _CFG. 2219All of this allows testing of the Load and Unload operators from AcpiExec. 2220 2221Debugger: update tables command for unloaded tables. Handle unloaded tables 2222and use the standard table header output routine. 2223 2224---------------------------------------- 222509 June 2008. Summary of changes for version 20080609: 2226 22271) ACPI CA Core Subsystem: 2228 2229Implemented a workaround for reversed _PRT entries. A significant number of 2230BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2231change dynamically detects and repairs this problem. Provides compatibility 2232with MS ACPI. BZ 6859 2233 2234Simplified the internal ACPI hardware interfaces to eliminate the locking 2235flag parameter from Register Read/Write. Added a new external interface, 2236AcpiGetRegisterUnlocked. 2237 2238Fixed a problem where the invocation of a GPE control method could hang. This 2239was a regression introduced in 20080514. The new method argument count 2240validation mechanism can enter an infinite loop when a GPE method is 2241dispatched. Problem fixed by removing the obsolete code that passed GPE block 2242information to the notify handler via the control method parameter pointer. 2243 2244Fixed a problem where the _SST execution status was incorrectly returned to 2245the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 224620080514. _SST is optional and a NOT_FOUND exception should never be 2247returned. BZ 716 2248 2249Fixed a problem where a deleted object could be accessed from within the AML 2250parser. This was a regression introduced in version 20080123 as a fix for the 2251Unload operator. Lin Ming. BZ 10669 2252 2253Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2254and eliminated the use of a negative index in a loop. Operands are now 2255displayed in the correct order, not backwards. This also fixes a regression 2256introduced in 20080514 on 64-bit systems where the elimination of 2257ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2258 2259Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2260path did not delete a locally allocated structure. 2261 2262Updated definitions for the DMAR and SRAT tables to synchronize with the 2263current specifications. Includes disassembler support. 2264 2265Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2266loop termination value was used. Loop terminated on iteration early, missing 2267one mutex. Linn Crosetto 2268 2269Example Code and Data Size: These are the sizes for the OS-independent 2270acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2271debug version of the code includes the debug output trace mechanism and has a 2272much larger code and data size. 2273 2274 Previous Release: 2275 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2276 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2277 Current Release: 2278 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2279 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2280 22812) iASL Compiler/Disassembler and Tools: 2282 2283Disassembler: Implemented support for EisaId() within _CID objects. Now 2284disassemble integer _CID objects back to EisaId invocations, including 2285multiple integers within _CID packages. Includes single-step support for 2286debugger also. 2287 2288Disassembler: Added support for DMAR and SRAT table definition changes. 2289 2290---------------------------------------- 229114 May 2008. Summary of changes for version 20080514: 2292 22931) ACPI CA Core Subsystem: 2294 2295Fixed a problem where GPEs were enabled too early during the ACPICA 2296initialization. This could lead to "handler not installed" errors on some 2297machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2298ensures that all operation regions and devices throughout the namespace have 2299been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2300 2301Implemented a change to the enter sleep code. Moved execution of the _GTS 2302method to just before setting sleep enable bit. The execution was moved from 2303AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2304immediately before the SLP_EN bit is set, as per the ACPI specification. 2305Luming Yu, BZ 1653. 2306 2307Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2308the GPE, even if ACPICA thinks that that it is already disabled. It is 2309possible that the AML or some other code has enabled the GPE unbeknownst to 2310the ACPICA code. 2311 2312Fixed a problem with the Field operator where zero-length fields would return 2313an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2314field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2315 2316Implemented a fix for the Load operator, now load the table at the namespace 2317root. This reverts a change introduced in version 20071019. The table is now 2318loaded at the namespace root even though this goes against the ACPI 2319specification. This provides compatibility with other ACPI implementations. 2320The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2321 2322Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2323Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2324acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2325Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2326signatures, ACPICA must be compatible. BZ 10454. 2327 2328Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2329fields to the exception string arrays to eliminate a -1 subtraction on the 2330SubStatus field. 2331 2332Updated the debug tracking macros to reduce overall code and data size. 2333Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2334instead of pointers to static strings. Jan Beulich and Bob Moore. 2335 2336Implemented argument count checking in control method invocation via 2337AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2338many. This applies only to extern programmatic control method execution, not 2339method-to-method calls within the AML. Lin Ming. 2340 2341Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2342longer needed, especially with the removal of 16-bit support. It was replaced 2343mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 234432/64-bit platforms is required. 2345 2346Added the C const qualifier for appropriate string constants -- mostly 2347MODULE_NAME and printf format strings. Jan Beulich. 2348 2349Example Code and Data Size: These are the sizes for the OS-independent 2350acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2351debug version of the code includes the debug output trace mechanism and has a 2352much larger code and data size. 2353 2354 Previous Release: 2355 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2356 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2357 Current Release: 2358 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2359 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2360 23612) iASL Compiler/Disassembler and Tools: 2362 2363Implemented ACPI table revision ID validation in the disassembler. Zero is 2364always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2365means 32-bit and this is unusual. 2 or greater is 64-bit. 2366 2367---------------------------------------- 236821 March 2008. Summary of changes for version 20080321: 2369 23701) ACPI CA Core Subsystem: 2371 2372Implemented an additional change to the GPE support in order to suppress 2373spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2374disable incoming GPEs that are neither enabled nor disabled -- meaning that 2375the GPE is unknown to the system. This should prevent future interrupt floods 2376from that GPE. BZ 6217 (Zhang Rui) 2377 2378Fixed a problem where NULL package elements were not returned to the 2379AcpiEvaluateObject interface correctly. The element was simply ignored 2380instead of returning a NULL ACPI_OBJECT package element, potentially causing 2381a buffer overflow and/or confusing the caller who expected a fixed number of 2382elements. BZ 10132 (Lin Ming, Bob Moore) 2383 2384Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2385Qword), Field, BankField, and IndexField operators when invoked from inside 2386an executing control method. In this case, these operators created namespace 2387nodes that were incorrectly left marked as permanent nodes instead of 2388temporary nodes. This could cause a problem if there is race condition 2389between an exiting control method and a running namespace walk. (Reported by 2390Linn Crosetto) 2391 2392Fixed a problem where the CreateField and CreateXXXField operators would 2393incorrectly allow duplicate names (the name of the field) with no exception 2394generated. 2395 2396Implemented several changes for Notify handling. Added support for new Notify 2397values (ACPI 2.0+) and improved the Notify debug output. Notify on 2398PowerResource objects is no longer allowed, as per the ACPI specification. 2399(Bob Moore, Zhang Rui) 2400 2401All Reference Objects returned via the AcpiEvaluateObject interface are now 2402marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2403NULL objects - either NULL package elements or unresolved named references. 2404 2405Fixed a problem where an extraneous debug message was produced for package 2406objects (when debugging enabled). The message "Package List length larger 2407than NumElements count" is now produced in the correct case, and is now an 2408error message rather than a debug message. Added a debug message for the 2409opposite case, where NumElements is larger than the Package List (the package 2410will be padded out with NULL elements as per the ACPI spec.) 2411 2412Implemented several improvements for the output of the ASL "Debug" object to 2413clarify and keep all data for a given object on one output line. 2414 2415Fixed two size calculation issues with the variable-length Start Dependent 2416resource descriptor. 2417 2418Example Code and Data Size: These are the sizes for the OS-independent 2419acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2420debug version of the code includes the debug output trace mechanism and has 2421a much larger code and data size. 2422 2423 Previous Release: 2424 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2425 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2426 Current Release: 2427 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2428 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2429 24302) iASL Compiler/Disassembler and Tools: 2431 2432Fixed a problem with the use of the Switch operator where execution of the 2433containing method by multiple concurrent threads could cause an 2434AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2435actual Switch opcode, it must be simulated with local named temporary 2436variables and if/else pairs. The solution chosen was to mark any method that 2437uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2438 2439---------------------------------------- 244013 February 2008. Summary of changes for version 20080213: 2441 24421) ACPI CA Core Subsystem: 2443 2444Implemented another MS compatibility design change for GPE/Notify handling. 2445GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2446complete first. It is expected that the OSL will queue the enable request 2447behind all pending notify requests (may require changes to the local host OSL 2448in AcpiOsExecute). Alexey Starikovskiy. 2449 2450Fixed a problem where buffer and package objects passed as arguments to a 2451control method via the external AcpiEvaluateObject interface could cause an 2452AE_AML_INTERNAL exception depending on the order and type of operators 2453executed by the target control method. 2454 2455Fixed a problem where resource descriptor size optimization could cause a 2456problem when a _CRS resource template is passed to a _SRS method. The _SRS 2457resource template must use the same descriptors (with the same size) as 2458returned from _CRS. This change affects the following resource descriptors: 2459IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2460 2461Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2462objects did not perform an implicit conversion as it should. These types must 2463retain their initial type permanently as per the ACPI specification. However, 2464a CopyObject to all other object types should not perform an implicit 2465conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2466 2467Fixed a problem with the AcpiGetDevices interface where the mechanism to 2468match device CIDs did not examine the entire list of available CIDs, but 2469instead aborted on the first non-matching CID. Andrew Patterson. 2470 2471Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2472inadvertently changed to return a 16-bit value instead of a 32-bit value, 2473truncating the upper dword of a 64-bit value. This macro is only used to 2474display debug output, so no incorrect calculations were made. Also, 2475reimplemented the macro so that a 64-bit shift is not performed by 2476inefficient compilers. 2477 2478Added missing va_end statements that should correspond with each va_start 2479statement. 2480 2481Example Code and Data Size: These are the sizes for the OS-independent 2482acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2483debug version of the code includes the debug output trace mechanism and has 2484a much larger code and data size. 2485 2486 Previous Release: 2487 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2488 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2489 Current Release: 2490 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2491 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2492 24932) iASL Compiler/Disassembler and Tools: 2494 2495Implemented full disassembler support for the following new ACPI tables: 2496BERT, EINJ, and ERST. Implemented partial disassembler support for the 2497complicated HEST table. These tables support the Windows Hardware Error 2498Architecture (WHEA). 2499 2500---------------------------------------- 250123 January 2008. Summary of changes for version 20080123: 2502 25031) ACPI CA Core Subsystem: 2504 2505Added the 2008 copyright to all module headers and signons. This affects 2506virtually every file in the ACPICA core subsystem, the iASL compiler, and 2507the tools/utilities. 2508 2509Fixed a problem with the SizeOf operator when used with Package and Buffer 2510objects. These objects have deferred execution for some arguments, and the 2511execution is now completed before the SizeOf is executed. This problem caused 2512unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 25139558 2514 2515Implemented an enhancement to the interpreter "slack mode". In the absence of 2516an explicit return or an implicitly returned object from the last executed 2517opcode, a control method will now implicitly return an integer of value 0 for 2518Microsoft compatibility. (Lin Ming) BZ 392 2519 2520Fixed a problem with the Load operator where an exception was not returned in 2521the case where the table is already loaded. (Lin Ming) BZ 463 2522 2523Implemented support for the use of DDBHandles as an Indexed Reference, as per 2524the ACPI spec. (Lin Ming) BZ 486 2525 2526Implemented support for UserTerm (Method invocation) for the Unload operator 2527as per the ACPI spec. (Lin Ming) BZ 580 2528 2529Fixed a problem with the LoadTable operator where the OemId and OemTableId 2530input strings could cause unexpected failures if they were shorter than the 2531maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2532 2533Implemented support for UserTerm (Method invocation) for the Unload operator 2534as per the ACPI spec. (Lin Ming) BZ 580 2535 2536Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2537IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2538 2539Example Code and Data Size: These are the sizes for the OS-independent 2540acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2541debug version of the code includes the debug output trace mechanism and has 2542a much larger code and data size. 2543 2544 Previous Release: 2545 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2546 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2547 Current Release: 2548 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2549 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2550 25512) iASL Compiler/Disassembler and Tools: 2552 2553Implemented support in the disassembler for checksum validation on incoming 2554binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2555header dump at the start of the disassembly. 2556 2557Implemented additional debugging information in the namespace listing file 2558created during compilation. In addition to the namespace hierarchy, the full 2559pathname to each namespace object is displayed. 2560 2561Fixed a problem with the disassembler where invalid ACPI tables could cause 2562faults or infinite loops. 2563 2564Fixed an unexpected parse error when using the optional "parameter types" 2565list in a control method declaration. (Lin Ming) BZ 397 2566 2567Fixed a problem where two External declarations with the same name did not 2568cause an error (Lin Ming) BZ 509 2569 2570Implemented support for full TermArgs (adding Argx, Localx and method 2571invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2572Ming) BZ 583,587 2573 2574---------------------------------------- 257519 December 2007. Summary of changes for version 20071219: 2576 25771) ACPI CA Core Subsystem: 2578 2579Implemented full support for deferred execution for the TermArg string 2580arguments for DataTableRegion. This enables forward references and full 2581operand resolution for the three string arguments. Similar to OperationRegion 2582deferred argument execution.) Lin Ming. BZ 430 2583 2584Implemented full argument resolution support for the BankValue argument to 2585BankField. Previously, only constants were supported, now any TermArg may be 2586used. Lin Ming BZ 387, 393 2587 2588Fixed a problem with AcpiGetDevices where the search of a branch of the 2589device tree could be terminated prematurely. In accordance with the ACPI 2590specification, the search down the current branch is terminated if a device 2591is both not present and not functional (instead of just not present.) Yakui 2592Zhao. 2593 2594Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2595the underlying AML code changed the GPE enable registers. Now, any unknown 2596incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2597instead of simply ignored. Rui Zhang. 2598 2599Fixed a problem with Index Fields where the Index register was incorrectly 2600limited to a maximum of 32 bits. Now any size may be used. 2601 2602Fixed a couple memory leaks associated with "implicit return" objects when 2603the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2604 2605Example Code and Data Size: These are the sizes for the OS-independent 2606acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2607debug version of the code includes the debug output trace mechanism and has 2608a much larger code and data size. 2609 2610 Previous Release: 2611 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2612 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2613 Current Release: 2614 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2615 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2616 2617---------------------------------------- 261814 November 2007. Summary of changes for version 20071114: 2619 26201) ACPI CA Core Subsystem: 2621 2622Implemented event counters for each of the Fixed Events, the ACPI SCI 2623(interrupt) itself, and control methods executed. Named 2624AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2625should be useful for debugging and statistics. 2626 2627Implemented a new external interface, AcpiGetStatistics, to retrieve the 2628contents of the various event counters. Returns the current values for 2629AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2630AcpiMethodCount. The interface can be expanded in the future if new counters 2631are added. Device drivers should use this interface rather than access the 2632counters directly. 2633 2634Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2635the ShortDivide function worked incorrectly, causing problems with the BCD 2636functions with large input values. A truncation from 64-bit to 32-bit 2637inadvertently occurred. Internal BZ 435. Lin Ming 2638 2639Fixed a problem with Index references passed as method arguments. References 2640passed as arguments to control methods were dereferenced immediately (before 2641control was passed to the called method). The references are now correctly 2642passed directly to the called method. BZ 5389. Lin Ming 2643 2644Fixed a problem with CopyObject used in conjunction with the Index operator. 2645The reference was incorrectly dereferenced before the copy. The reference is 2646now correctly copied. BZ 5391. Lin Ming 2647 2648Fixed a problem with Control Method references within Package objects. These 2649references are now correctly generated. This completes the package 2650construction overhaul that began in version 20071019. 2651 2652Example Code and Data Size: These are the sizes for the OS-independent 2653acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2654debug version of the code includes the debug output trace mechanism and has 2655a much larger code and data size. 2656 2657 Previous Release: 2658 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2659 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2660 Current Release: 2661 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2662 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2663 2664 26652) iASL Compiler/Disassembler and Tools: 2666 2667The AcpiExec utility now installs handlers for all of the predefined 2668Operation Region types. New types supported are: PCI_Config, CMOS, and 2669PCIBARTarget. 2670 2671Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2672bit) address fields for the DSDT and FACS within the FADT were not being 2673used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2674and Bob Moore 2675 2676---------------------------------------- 267719 October 2007. Summary of changes for version 20071019: 2678 26791) ACPI CA Core Subsystem: 2680 2681Fixed a problem with the Alias operator when the target of the alias is a 2682named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2683Processor, and ThermalZone. In these cases, any children of the original 2684operator could not be accessed via the alias, potentially causing unexpected 2685AE_NOT_FOUND exceptions. (BZ 9067) 2686 2687Fixed a problem with the Package operator where all named references were 2688created as object references and left otherwise unresolved. According to the 2689ACPI specification, a Package can only contain Data Objects or references to 2690control methods. The implication is that named references to Data Objects 2691(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2692immediately upon package creation. This is the approach taken with this 2693change. References to all other named objects (Methods, Devices, Scopes, 2694etc.) are all now properly created as reference objects. (BZ 5328) 2695 2696Reverted a change to Notify handling that was introduced in version 269720070508. This version changed the Notify handling from asynchronous to 2698fully synchronous (Device driver Notify handling with respect to the Notify 2699ASL operator). It was found that this change caused more problems than it 2700solved and was removed by most users. 2701 2702Fixed a problem with the Increment and Decrement operators where the type of 2703the target object could be unexpectedly and incorrectly changed. (BZ 353) 2704Lin Ming. 2705 2706Fixed a problem with the Load and LoadTable operators where the table 2707location within the namespace was ignored. Instead, the table was always 2708loaded into the root or current scope. Lin Ming. 2709 2710Fixed a problem with the Load operator when loading a table from a buffer 2711object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2712 2713Fixed a problem with the Debug object where a store of a DdbHandle reference 2714object to the Debug object could cause a fault. 2715 2716Added a table checksum verification for the Load operator, in the case where 2717the load is from a buffer. (BZ 578). 2718 2719Implemented additional parameter validation for the LoadTable operator. The 2720length of the input strings SignatureString, OemIdString, and OemTableId are 2721now checked for maximum lengths. (BZ 582) Lin Ming. 2722 2723Example Code and Data Size: These are the sizes for the OS-independent 2724acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2725debug version of the code includes the debug output trace mechanism and has 2726a much larger code and data size. 2727 2728 Previous Release: 2729 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2730 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2731 Current Release: 2732 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2733 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2734 2735 27362) iASL Compiler/Disassembler: 2737 2738Fixed a problem where if a single file was specified and the file did not 2739exist, no error message was emitted. (Introduced with wildcard support in 2740version 20070917.) 2741 2742---------------------------------------- 274319 September 2007. Summary of changes for version 20070919: 2744 27451) ACPI CA Core Subsystem: 2746 2747Designed and implemented new external interfaces to install and remove 2748handlers for ACPI table-related events. Current events that are defined are 2749LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2750they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2751AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2752 2753Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2754(acpi_serialized option on Linux) could cause some systems to hang during 2755initialization. (Bob Moore) BZ 8171 2756 2757Fixed a problem where objects of certain types (Device, ThermalZone, 2758Processor, PowerResource) can be not found if they are declared and 2759referenced from within the same control method (Lin Ming) BZ 341 2760 2761Example Code and Data Size: These are the sizes for the OS-independent 2762acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2763debug version of the code includes the debug output trace mechanism and has 2764a much larger code and data size. 2765 2766 Previous Release: 2767 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2768 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2769 Current Release: 2770 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2771 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2772 2773 27742) iASL Compiler/Disassembler: 2775 2776Implemented support to allow multiple files to be compiled/disassembled in a 2777single invocation. This includes command line wildcard support for both the 2778Windows and Unix versions of the compiler. This feature simplifies the 2779disassembly and compilation of multiple ACPI tables in a single directory. 2780 2781---------------------------------------- 278208 May 2007. Summary of changes for version 20070508: 2783 27841) ACPI CA Core Subsystem: 2785 2786Implemented a Microsoft compatibility design change for the handling of the 2787Notify AML operator. Previously, notify handlers were dispatched and 2788executed completely asynchronously in a deferred thread. The new design 2789still executes the notify handlers in a different thread, but the original 2790thread that executed the Notify() now waits at a synchronization point for 2791the notify handler to complete. Some machines depend on a synchronous Notify 2792operator in order to operate correctly. 2793 2794Implemented support to allow Package objects to be passed as method 2795arguments to the external AcpiEvaluateObject interface. Previously, this 2796would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2797implemented since there were no reserved control methods that required it 2798until recently. 2799 2800Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2801contained invalid non-zero values in reserved fields could cause later 2802failures because these fields have meaning in later revisions of the FADT. 2803For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2804are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2805 2806Fixed a problem where the Global Lock handle was not properly updated if a 2807thread that acquired the Global Lock via executing AML code then attempted 2808to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2809Liu. 2810 2811Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2812could be corrupted if the interrupt being removed was at the head of the 2813list. Reported by Linn Crosetto. 2814 2815Example Code and Data Size: These are the sizes for the OS-independent 2816acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2817debug version of the code includes the debug output trace mechanism and has 2818a much larger code and data size. 2819 2820 Previous Release: 2821 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2822 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2823 Current Release: 2824 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2825 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2826 2827---------------------------------------- 282820 March 2007. Summary of changes for version 20070320: 2829 28301) ACPI CA Core Subsystem: 2831 2832Implemented a change to the order of interpretation and evaluation of AML 2833operand objects within the AML interpreter. The interpreter now evaluates 2834operands in the order that they appear in the AML stream (and the 2835corresponding ASL code), instead of in the reverse order (after the entire 2836operand list has been parsed). The previous behavior caused several subtle 2837incompatibilities with the Microsoft AML interpreter as well as being 2838somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2839 2840Implemented a change to the ACPI Global Lock support. All interfaces to the 2841global lock now allow the same thread to acquire the lock multiple times. 2842This affects the AcpiAcquireGlobalLock external interface to the global lock 2843as well as the internal use of the global lock to support AML fields -- a 2844control method that is holding the global lock can now simultaneously access 2845AML fields that require global lock protection. Previously, in both cases, 2846this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2847AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2848Controller. There is no change to the behavior of the AML Acquire operator, 2849as this can already be used to acquire a mutex multiple times by the same 2850thread. BZ 8066. With assistance from Alexey Starikovskiy. 2851 2852Fixed a problem where invalid objects could be referenced in the AML 2853Interpreter after error conditions. During operand evaluation, ensure that 2854the internal "Return Object" field is cleared on error and only valid 2855pointers are stored there. Caused occasional access to deleted objects that 2856resulted in "large reference count" warning messages. Valery Podrezov. 2857 2858Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2859deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2860Podrezov. 2861 2862Fixed an internal problem with the handling of result objects on the 2863interpreter result stack. BZ 7872. Valery Podrezov. 2864 2865Removed obsolete code that handled the case where AML_NAME_OP is the target 2866of a reference (Reference.Opcode). This code was no longer necessary. BZ 28677874. Valery Podrezov. 2868 2869Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2870remnant from the previously discontinued 16-bit support. 2871 2872Example Code and Data Size: These are the sizes for the OS-independent 2873acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2874debug version of the code includes the debug output trace mechanism and has 2875a much larger code and data size. 2876 2877 Previous Release: 2878 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2879 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2880 Current Release: 2881 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2882 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2883 2884---------------------------------------- 288526 January 2007. Summary of changes for version 20070126: 2886 28871) ACPI CA Core Subsystem: 2888 2889Added the 2007 copyright to all module headers and signons. This affects 2890virtually every file in the ACPICA core subsystem, the iASL compiler, and 2891the utilities. 2892 2893Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2894during a table load. A bad pointer was passed in the case where the DSDT is 2895overridden, causing a fault in this case. 2896 2897Example Code and Data Size: These are the sizes for the OS-independent 2898acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2899debug version of the code includes the debug output trace mechanism and has 2900a much larger code and data size. 2901 2902 Previous Release: 2903 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2904 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2905 Current Release: 2906 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2907 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2908 2909---------------------------------------- 291015 December 2006. Summary of changes for version 20061215: 2911 29121) ACPI CA Core Subsystem: 2913 2914Support for 16-bit ACPICA has been completely removed since it is no longer 2915necessary and it clutters the code. All 16-bit macros, types, and 2916conditional compiles have been removed, cleaning up and simplifying the code 2917across the entire subsystem. DOS support is no longer needed since the 2918bootable Linux firmware kit is now available. 2919 2920The handler for the Global Lock is now removed during AcpiTerminate to 2921enable a clean subsystem restart, via the implementation of the 2922AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2923HP) 2924 2925Implemented enhancements to the multithreading support within the debugger 2926to enable improved multithreading debugging and evaluation of the subsystem. 2927(Valery Podrezov) 2928 2929Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2930memory used during the execution, as well as the maximum memory consumed by 2931each of the various object types. (Valery Podrezov) 2932 2933Example Code and Data Size: These are the sizes for the OS-independent 2934acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2935debug version of the code includes the debug output trace mechanism and has 2936a much larger code and data size. 2937 2938 Previous Release: 2939 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2940 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2941 Current Release: 2942 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2943 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2944 2945 29462) iASL Compiler/Disassembler and Tools: 2947 2948AcpiExec: Implemented a new option (-m) to display full memory use 2949statistics upon subsystem/program termination. (Valery Podrezov) 2950 2951---------------------------------------- 295209 November 2006. Summary of changes for version 20061109: 2953 29541) ACPI CA Core Subsystem: 2955 2956Optimized the Load ASL operator in the case where the source operand is an 2957operation region. Simply map the operation region memory, instead of 2958performing a bytewise read. (Region must be of type SystemMemory, see 2959below.) 2960 2961Fixed the Load ASL operator for the case where the source operand is a 2962region field. A buffer object is also allowed as the source operand. BZ 480 2963 2964Fixed a problem where the Load ASL operator allowed the source operand to be 2965an operation region of any type. It is now restricted to regions of type 2966SystemMemory, as per the ACPI specification. BZ 481 2967 2968Additional cleanup and optimizations for the new Table Manager code. 2969 2970AcpiEnable will now fail if all of the required ACPI tables are not loaded 2971(FADT, FACS, DSDT). BZ 477 2972 2973Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2974header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2975manually optimized to be aligned and will not work if it is byte-packed. 2976 2977Example Code and Data Size: These are the sizes for the OS-independent 2978acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2979debug version of the code includes the debug output trace mechanism and has 2980a much larger code and data size. 2981 2982 Previous Release: 2983 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2984 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2985 Current Release: 2986 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2987 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2988 2989 29902) iASL Compiler/Disassembler and Tools: 2991 2992Fixed a problem where the presence of the _OSI predefined control method 2993within complex expressions could cause an internal compiler error. 2994 2995AcpiExec: Implemented full region support for multiple address spaces. 2996SpaceId is now part of the REGION object. BZ 429 2997 2998---------------------------------------- 299911 October 2006. Summary of changes for version 20061011: 3000 30011) ACPI CA Core Subsystem: 3002 3003Completed an AML interpreter performance enhancement for control method 3004execution. Previously a 2-pass parse/execution, control methods are now 3005completely parsed and executed in a single pass. This improves overall 3006interpreter performance by ~25%, reduces code size, and reduces CPU stack 3007use. (Valery Podrezov + interpreter changes in version 20051202 that 3008eliminated namespace loading during the pass one parse.) 3009 3010Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3011match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3012obtained and also checked for an ID match. 3013 3014Implemented additional support for the PCI _ADR execution: upsearch until a 3015device scope is found before executing _ADR. This allows PCI_Config 3016operation regions to be declared locally within control methods underneath 3017PCI device objects. 3018 3019Fixed a problem with a possible race condition between threads executing 3020AcpiWalkNamespace and the AML interpreter. This condition was removed by 3021modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3022entries created during any concurrent control method execution. An 3023additional namespace race condition is known to exist between 3024AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3025investigation. 3026 3027Restructured the AML ParseLoop function, breaking it into several 3028subfunctions in order to reduce CPU stack use and improve maintainability. 3029(Mikhail Kouzmich) 3030 3031AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3032of prefix handle and pathname. BZ 478 3033 3034Example Code and Data Size: These are the sizes for the OS-independent 3035acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3036debug version of the code includes the debug output trace mechanism and has 3037a much larger code and data size. 3038 3039 Previous Release: 3040 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3041 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3042 Current Release: 3043 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3044 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3045 30462) iASL Compiler/Disassembler and Tools: 3047 3048Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3049to restore original behavior. 3050 3051---------------------------------------- 305227 September 2006. Summary of changes for version 20060927: 3053 30541) ACPI CA Core Subsystem: 3055 3056Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3057These functions now use a spinlock for mutual exclusion and the interrupt 3058level indication flag is not needed. 3059 3060Fixed a problem with the Global Lock where the lock could appear to be 3061obtained before it is actually obtained. The global lock semaphore was 3062inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3063Suietov. 3064 3065Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3066a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3067 3068Example Code and Data Size: These are the sizes for the OS-independent 3069acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3070debug version of the code includes the debug output trace mechanism and has 3071a much larger code and data size. 3072 3073 Previous Release: 3074 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3075 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3076 Current Release: 3077 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3078 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3079 3080 30812) iASL Compiler/Disassembler and Tools: 3082 3083Fixed a compilation problem with the pre-defined Resource Descriptor field 3084names where an "object does not exist" error could be incorrectly generated 3085if the parent ResourceTemplate pathname places the template within a 3086different namespace scope than the current scope. (BZ 7212) 3087 3088Fixed a problem where the compiler could hang after syntax errors detected 3089in an ElseIf construct. (BZ 453) 3090 3091Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3092operator. An incorrect output filename was produced when this parameter was 3093a null string (""). Now, the original input filename is used as the AML 3094output filename, with an ".aml" extension. 3095 3096Implemented a generic batch command mode for the AcpiExec utility (execute 3097any AML debugger command) (Valery Podrezov). 3098 3099---------------------------------------- 310012 September 2006. Summary of changes for version 20060912: 3101 31021) ACPI CA Core Subsystem: 3103 3104Enhanced the implementation of the "serialized mode" of the interpreter 3105(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3106specified, instead of creating a serialization semaphore per control method, 3107the interpreter lock is simply no longer released before a blocking 3108operation during control method execution. This effectively makes the AML 3109Interpreter single-threaded. The overhead of a semaphore per-method is 3110eliminated. 3111 3112Fixed a regression where an error was no longer emitted if a control method 3113attempts to create 2 objects of the same name. This once again returns 3114AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3115will dynamically serialize the control method to possible prevent future 3116errors. (BZ 440) 3117 3118Integrated a fix for a problem with PCI Express HID detection in the PCI 3119Config Space setup procedure. (BZ 7145) 3120 3121Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3122AcpiHwInitialize function - the FADT registers are now validated when the 3123table is loaded. 3124 3125Added two new warnings during FADT verification - 1) if the FADT is larger 3126than the largest known FADT version, and 2) if there is a mismatch between a 312732-bit block address and the 64-bit X counterpart (when both are non-zero.) 3128 3129Example Code and Data Size: These are the sizes for the OS-independent 3130acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3131debug version of the code includes the debug output trace mechanism and has 3132a much larger code and data size. 3133 3134 Previous Release: 3135 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3136 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3137 Current Release: 3138 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3139 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3140 3141 31422) iASL Compiler/Disassembler and Tools: 3143 3144Fixed a problem with the implementation of the Switch() operator where the 3145temporary variable was declared too close to the actual Switch, instead of 3146at method level. This could cause a problem if the Switch() operator is 3147within a while loop, causing an error on the second iteration. (BZ 460) 3148 3149Disassembler - fix for error emitted for unknown type for target of scope 3150operator. Now, ignore it and continue. 3151 3152Disassembly of an FADT now verifies the input FADT and reports any errors 3153found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3154 3155Disassembly of raw data buffers with byte initialization data now prefixes 3156each output line with the current buffer offset. 3157 3158Disassembly of ASF! table now includes all variable-length data fields at 3159the end of some of the subtables. 3160 3161The disassembler now emits a comment if a buffer appears to be a 3162ResourceTemplate, but cannot be disassembled as such because the EndTag does 3163not appear at the very end of the buffer. 3164 3165AcpiExec - Added the "-t" command line option to enable the serialized mode 3166of the AML interpreter. 3167 3168---------------------------------------- 316931 August 2006. Summary of changes for version 20060831: 3170 31711) ACPI CA Core Subsystem: 3172 3173Miscellaneous fixes for the Table Manager: 3174- Correctly initialize internal common FADT for all 64-bit "X" fields 3175- Fixed a couple table mapping issues during table load 3176- Fixed a couple alignment issues for IA64 3177- Initialize input array to zero in AcpiInitializeTables 3178- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3179AcpiGetTableByIndex 3180 3181Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3182immediately disabled to prevent the waking GPE from firing again and to 3183prevent other wake GPEs from interrupting the wake process. 3184 3185Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3186be used for debugging systems with a large number of ACPI interrupts. 3187 3188Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3189both the ACPICA headers and the disassembler. 3190 3191Example Code and Data Size: These are the sizes for the OS-independent 3192acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3193debug version of the code includes the debug output trace mechanism and has 3194a much larger code and data size. 3195 3196 Previous Release: 3197 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3198 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3199 Current Release: 3200 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3201 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3202 3203 32042) iASL Compiler/Disassembler and Tools: 3205 3206Disassembler support for the DMAR ACPI table. 3207 3208---------------------------------------- 320923 August 2006. Summary of changes for version 20060823: 3210 32111) ACPI CA Core Subsystem: 3212 3213The Table Manager component has been completely redesigned and 3214reimplemented. The new design is much simpler, and reduces the overall code 3215and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3216now possible to obtain the ACPI tables very early during kernel 3217initialization, even before dynamic memory management is initialized. 3218(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3219 3220Obsolete ACPICA interfaces: 3221 3222- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3223time). 3224- AcpiLoadTable: Not needed. 3225- AcpiUnloadTable: Not needed. 3226 3227New ACPICA interfaces: 3228 3229- AcpiInitializeTables: Must be called before the table manager can be used. 3230- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3231allocated memory after it becomes available. 3232- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3233in the RSDT/XSDT. 3234 3235Other ACPICA changes: 3236 3237- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3238AcpiOsUnmapMemory to free this mapping. 3239- AcpiGetTable returns the actual mapped table. The mapping is managed 3240internally and must not be deleted by the caller. Use of this interface 3241causes no additional dynamic memory allocation. 3242- AcpiFindRootPointer: Support for physical addressing has been eliminated, 3243it appeared to be unused. 3244- The interface to AcpiOsMapMemory has changed to be consistent with the 3245other allocation interfaces. 3246- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3247parameters. 3248- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3249bit platforms. Was previously 64 bits on all platforms. 3250- The interface to the ACPI Global Lock acquire/release macros have changed 3251slightly since ACPICA no longer keeps a local copy of the FACS with a 3252constructed pointer to the actual global lock. 3253 3254Porting to the new table manager: 3255 3256- AcpiInitializeTables: Must be called once, and can be called anytime 3257during the OS initialization process. It allows the host to specify an area 3258of memory to be used to store the internal version of the RSDT/XSDT (root 3259table). This allows the host to access ACPI tables before memory management 3260is initialized and running. 3261- AcpiReallocateRootTable: Can be called after memory management is running 3262to copy the root table to a dynamically allocated array, freeing up the 3263scratch memory specified in the call to AcpiInitializeTables. 3264- AcpiSubsystemInitialize: This existing interface is independent of the 3265Table Manager, and does not have to be called before the Table Manager can 3266be used, it only must be called before the rest of ACPICA can be used. 3267- ACPI Tables: Some changes have been made to the names and structure of the 3268actbl.h and actbl1.h header files and may require changes to existing code. 3269For example, bitfields have been completely removed because of their lack of 3270portability across C compilers. 3271- Update interfaces to the Global Lock acquire/release macros if local 3272versions are used. (see acwin.h) 3273 3274Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3275 3276New files: tbfind.c 3277 3278Example Code and Data Size: These are the sizes for the OS-independent 3279acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3280debug version of the code includes the debug output trace mechanism and has 3281a much larger code and data size. 3282 3283 Previous Release: 3284 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3285 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3286 Current Release: 3287 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3288 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3289 3290 32912) iASL Compiler/Disassembler and Tools: 3292 3293No changes for this release. 3294 3295---------------------------------------- 329621 July 2006. Summary of changes for version 20060721: 3297 32981) ACPI CA Core Subsystem: 3299 3300The full source code for the ASL test suite used to validate the iASL 3301compiler and the ACPICA core subsystem is being released with the ACPICA 3302source for the first time. The source is contained in a separate package and 3303consists of over 1100 files that exercise all ASL/AML operators. The package 3304should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3305Suietov) 3306 3307Completed a new design and implementation for support of the ACPI Global 3308Lock. On the OS side, the global lock is now treated as a standard AML 3309mutex. Previously, multiple OS threads could "acquire" the global lock 3310simultaneously. However, this could cause the BIOS to be starved out of the 3311lock - especially in cases such as the Embedded Controller driver where 3312there is a tight coupling between the OS and the BIOS. 3313 3314Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3315The Global Lock interrupt handler no longer queues the execution of a 3316separate thread to signal the global lock semaphore. Instead, the semaphore 3317is signaled directly from the interrupt handler. 3318 3319Implemented support within the AML interpreter for package objects that 3320contain a larger AML length (package list length) than the package element 3321count. In this case, the length of the package is truncated to match the 3322package element count. Some BIOS code apparently modifies the package length 3323on the fly, and this change supports this behavior. Provides compatibility 3324with the MS AML interpreter. (With assistance from Fiodor Suietov) 3325 3326Implemented a temporary fix for the BankValue parameter of a Bank Field to 3327support all constant values, now including the Zero and One opcodes. 3328Evaluation of this parameter must eventually be converted to a full TermArg 3329evaluation. A not-implemented error is now returned (temporarily) for non- 3330constant values for this parameter. 3331 3332Fixed problem reports (Fiodor Suietov) integrated: 3333- Fix for premature object deletion after CopyObject on Operation Region (BZ 3334350) 3335 3336Example Code and Data Size: These are the sizes for the OS-independent 3337acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3338debug version of the code includes the debug output trace mechanism and has 3339a much larger code and data size. 3340 3341 Previous Release: 3342 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3343 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3344 Current Release: 3345 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3346 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3347 3348 33492) iASL Compiler/Disassembler and Tools: 3350 3351No changes for this release. 3352 3353---------------------------------------- 335407 July 2006. Summary of changes for version 20060707: 3355 33561) ACPI CA Core Subsystem: 3357 3358Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3359that do not allow the initialization of address pointers within packed 3360structures - even though the hardware itself may support misaligned 3361transfers. Some of the debug data structures are packed by default to 3362minimize size. 3363 3364Added an error message for the case where AcpiOsGetThreadId() returns zero. 3365A non-zero value is required by the core ACPICA code to ensure the proper 3366operation of AML mutexes and recursive control methods. 3367 3368The DSDT is now the only ACPI table that determines whether the AML 3369interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3370the hooks for per-table 32/64 switching have been removed from the code. A 3371clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3372 3373Fixed a possible leak of an OwnerID in the error path of 3374AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3375deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3376when using the AcpiTbDeleteTablesByType interface (with assistance from 3377Lance Ortiz.) 3378 3379Fixed a problem with Serialized control methods where the semaphore 3380associated with the method could be over-signaled after multiple method 3381invocations. 3382 3383Fixed two issues with the locking of the internal namespace data structure. 3384Both the Unload() operator and AcpiUnloadTable interface now lock the 3385namespace during the namespace deletion associated with the table unload 3386(with assistance from Linn Crosetto.) 3387 3388Fixed problem reports (Valery Podrezov) integrated: 3389- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3390 3391Fixed problem reports (Fiodor Suietov) integrated: 3392- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3393- On Address Space handler deletion, needless deactivation call (BZ 374) 3394- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3395- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3396(BZ 376) 3397- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3398- Minimum Length of RSDT should be validated (BZ 379) 3399- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3400Handler (BZ (380) 3401- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3402(BZ 381) 3403 3404Example Code and Data Size: These are the sizes for the OS-independent 3405acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3406debug version of the code includes the debug output trace mechanism and has 3407a much larger code and data size. 3408 3409 Previous Release: 3410 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3411 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3412 Current Release: 3413 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3414 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3415 3416 34172) iASL Compiler/Disassembler and Tools: 3418 3419Fixed problem reports: 3420Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3421436) 3422 3423---------------------------------------- 342423 June 2006. Summary of changes for version 20060623: 3425 34261) ACPI CA Core Subsystem: 3427 3428Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3429allows the type to be customized to the host OS for improved efficiency 3430(since a spinlock is usually a very small object.) 3431 3432Implemented support for "ignored" bits in the ACPI registers. According to 3433the ACPI specification, these bits should be preserved when writing the 3434registers via a read/modify/write cycle. There are 3 bits preserved in this 3435manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3436 3437Implemented the initial deployment of new OSL mutex interfaces. Since some 3438host operating systems have separate mutex and semaphore objects, this 3439feature was requested. The base code now uses mutexes (and the new mutex 3440interfaces) wherever a binary semaphore was used previously. However, for 3441the current release, the mutex interfaces are defined as macros to map them 3442to the existing semaphore interfaces. Therefore, no OSL changes are required 3443at this time. (See acpiosxf.h) 3444 3445Fixed several problems with the support for the control method SyncLevel 3446parameter. The SyncLevel now works according to the ACPI specification and 3447in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3448is a property of the executing thread. Mutual exclusion for control methods 3449is now implemented with a mutex instead of a semaphore. 3450 3451Fixed three instances of the use of the C shift operator in the bitfield 3452support code (exfldio.c) to avoid the use of a shift value larger than the 3453target data width. The behavior of C compilers is undefined in this case and 3454can cause unpredictable results, and therefore the case must be detected and 3455avoided. (Fiodor Suietov) 3456 3457Added an info message whenever an SSDT or OEM table is loaded dynamically 3458via the Load() or LoadTable() ASL operators. This should improve debugging 3459capability since it will show exactly what tables have been loaded (beyond 3460the tables present in the RSDT/XSDT.) 3461 3462Example Code and Data Size: These are the sizes for the OS-independent 3463acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3464debug version of the code includes the debug output trace mechanism and has 3465a much larger code and data size. 3466 3467 Previous Release: 3468 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3469 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3470 Current Release: 3471 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3472 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3473 3474 34752) iASL Compiler/Disassembler and Tools: 3476 3477No changes for this release. 3478 3479---------------------------------------- 348008 June 2006. Summary of changes for version 20060608: 3481 34821) ACPI CA Core Subsystem: 3483 3484Converted the locking mutex used for the ACPI hardware to a spinlock. This 3485change should eliminate all problems caused by attempting to acquire a 3486semaphore at interrupt level, and it means that all ACPICA external 3487interfaces that directly access the ACPI hardware can be safely called from 3488interrupt level. OSL code that implements the semaphore interfaces should be 3489able to eliminate any workarounds for being called at interrupt level. 3490 3491Fixed a regression introduced in 20060526 where the ACPI device 3492initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3493did not have an optional _INI method. 3494 3495Fixed an IndexField issue where a write to the Data Register should be 3496limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3497Fiodor Suietov) 3498 3499Fixed problem reports (Valery Podrezov) integrated: 3500- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3501 3502Fixed problem reports (Fiodor Suietov) integrated: 3503- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3504 3505Removed four global mutexes that were obsolete and were no longer being 3506used. 3507 3508Example Code and Data Size: These are the sizes for the OS-independent 3509acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3510debug version of the code includes the debug output trace mechanism and has 3511a much larger code and data size. 3512 3513 Previous Release: 3514 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3515 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3516 Current Release: 3517 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3518 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3519 3520 35212) iASL Compiler/Disassembler and Tools: 3522 3523Fixed a fault when using -g option (get tables from registry) on Windows 3524machines. 3525 3526Fixed problem reports integrated: 3527- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3528- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3529Suietov) 3530- Global table revision override (-r) is ignored (BZ 413) 3531 3532---------------------------------------- 353326 May 2006. Summary of changes for version 20060526: 3534 35351) ACPI CA Core Subsystem: 3536 3537Restructured, flattened, and simplified the internal interfaces for 3538namespace object evaluation - resulting in smaller code, less CPU stack use, 3539and fewer interfaces. (With assistance from Mikhail Kouzmich) 3540 3541Fixed a problem with the CopyObject operator where the first parameter was 3542not typed correctly for the parser, interpreter, compiler, and disassembler. 3543Caused various errors and unexpected behavior. 3544 3545Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3546produced incorrect results with some C compilers. Since the behavior of C 3547compilers when the shift value is larger than the datatype width is 3548apparently not well defined, the interpreter now detects this condition and 3549simply returns zero as expected in all such cases. (BZ 395) 3550 3551Fixed problem reports (Valery Podrezov) integrated: 3552- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3553- Allow interpreter to handle nested method declarations (BZ 5361) 3554 3555Fixed problem reports (Fiodor Suietov) integrated: 3556- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3557- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3558- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3559- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3560- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3561- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3562- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3563- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3564- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3565- Status of the Global Initialization Handler call not used (BZ 366) 3566- Incorrect object parameter to Global Initialization Handler (BZ 367) 3567 3568Example Code and Data Size: These are the sizes for the OS-independent 3569acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3570debug version of the code includes the debug output trace mechanism and has 3571a much larger code and data size. 3572 3573 Previous Release: 3574 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3575 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3576 Current Release: 3577 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3578 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3579 3580 35812) iASL Compiler/Disassembler and Tools: 3582 3583Modified the parser to allow the names IO, DMA, and IRQ to be used as 3584namespace identifiers with no collision with existing resource descriptor 3585macro names. This provides compatibility with other ASL compilers and is 3586most useful for disassembly/recompilation of existing tables without parse 3587errors. (With assistance from Thomas Renninger) 3588 3589Disassembler: fixed an incorrect disassembly problem with the 3590DataTableRegion and CopyObject operators. Fixed a possible fault during 3591disassembly of some Alias operators. 3592 3593---------------------------------------- 359412 May 2006. Summary of changes for version 20060512: 3595 35961) ACPI CA Core Subsystem: 3597 3598Replaced the AcpiOsQueueForExecution interface with a new interface named 3599AcpiOsExecute. The major difference is that the new interface does not have 3600a Priority parameter, this appeared to be useless and has been replaced by a 3601Type parameter. The Type tells the host what type of execution is being 3602requested, such as global lock handler, notify handler, GPE handler, etc. 3603This allows the host to queue and execute the request as appropriate for the 3604request type, possibly using different work queues and different priorities 3605for the various request types. This enables fixes for multithreading 3606deadlock problems such as BZ #5534, and will require changes to all existing 3607OS interface layers. (Alexey Starikovskiy and Bob Moore) 3608 3609Fixed a possible memory leak associated with the support for the so-called 3610"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3611Suietov) 3612 3613Fixed a problem with the Load() operator where a table load from an 3614operation region could overwrite an internal table buffer by up to 7 bytes 3615and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3616 3617Example Code and Data Size: These are the sizes for the OS-independent 3618acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3619debug version of the code includes the debug output trace mechanism and has 3620a much larger code and data size. 3621 3622 Previous Release: 3623 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3624 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3625 Current Release: 3626 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3627 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3628 3629 3630 36312) iASL Compiler/Disassembler and Tools: 3632 3633Disassembler: Implemented support to cross reference the internal namespace 3634and automatically generate ASL External() statements for symbols not defined 3635within the current table being disassembled. This will simplify the 3636disassembly and recompilation of interdependent tables such as SSDTs since 3637these statements will no longer have to be added manually. 3638 3639Disassembler: Implemented experimental support to automatically detect 3640invocations of external control methods and generate appropriate External() 3641statements. This is problematic because the AML cannot be correctly parsed 3642until the number of arguments for each control method is known. Currently, 3643standalone method invocations and invocations as the source operand of a 3644Store() statement are supported. 3645 3646Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3647LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3648LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3649more readable and likely closer to the original ASL source. 3650 3651---------------------------------------- 365221 April 2006. Summary of changes for version 20060421: 3653 36541) ACPI CA Core Subsystem: 3655 3656Removed a device initialization optimization introduced in 20051216 where 3657the _STA method was not run unless an _INI was also present for the same 3658device. This optimization could cause problems because it could allow _INI 3659methods to be run within a not-present device subtree. (If a not-present 3660device had no _INI, _STA would not be run, the not-present status would not 3661be discovered, and the children of the device would be incorrectly 3662traversed.) 3663 3664Implemented a new _STA optimization where namespace subtrees that do not 3665contain _INI are identified and ignored during device initialization. 3666Selectively running _STA can significantly improve boot time on large 3667machines (with assistance from Len Brown.) 3668 3669Implemented support for the device initialization case where the returned 3670_STA flags indicate a device not-present but functioning. In this case, _INI 3671is not run, but the device children are examined for presence, as per the 3672ACPI specification. 3673 3674Implemented an additional change to the IndexField support in order to 3675conform to MS behavior. The value written to the Index Register is not 3676simply a byte offset, it is a byte offset in units of the access width of 3677the parent Index Field. (Fiodor Suietov) 3678 3679Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3680interface is called during the creation of all AML operation regions, and 3681allows the host OS to exert control over what addresses it will allow the 3682AML code to access. Operation Regions whose addresses are disallowed will 3683cause a runtime exception when they are actually accessed (will not affect 3684or abort table loading.) See oswinxf or osunixxf for an example 3685implementation. 3686 3687Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3688interface allows the host OS to match the various "optional" 3689interface/behavior strings for the _OSI predefined control method as 3690appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3691for an example implementation. 3692 3693Restructured and corrected various problems in the exception handling code 3694paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3695(with assistance from Takayoshi Kochi.) 3696 3697Modified the Linux source converter to ignore quoted string literals while 3698converting identifiers from mixed to lower case. This will correct problems 3699with the disassembler and other areas where such strings must not be 3700modified. 3701 3702The ACPI_FUNCTION_* macros no longer require quotes around the function 3703name. This allows the Linux source converter to convert the names, now that 3704the converter ignores quoted strings. 3705 3706Example Code and Data Size: These are the sizes for the OS-independent 3707acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3708debug version of the code includes the debug output trace mechanism and has 3709a much larger code and data size. 3710 3711 Previous Release: 3712 3713 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3714 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3715 Current Release: 3716 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3717 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3718 3719 37202) iASL Compiler/Disassembler and Tools: 3721 3722Implemented 3 new warnings for iASL, and implemented multiple warning levels 3723(w2 flag). 3724 37251) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3726WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3727check for the possible timeout, a warning is issued. 3728 37292) Useless operators: If an ASL operator does not specify an optional target 3730operand and it also does not use the function return value from the 3731operator, a warning is issued since the operator effectively does nothing. 3732 37333) Unreferenced objects: If a namespace object is created, but never 3734referenced, a warning is issued. This is a warning level 2 since there are 3735cases where this is ok, such as when a secondary table is loaded that uses 3736the unreferenced objects. Even so, care is taken to only flag objects that 3737don't look like they will ever be used. For example, the reserved methods 3738(starting with an underscore) are usually not referenced because it is 3739expected that the OS will invoke them. 3740 3741---------------------------------------- 374231 March 2006. Summary of changes for version 20060331: 3743 37441) ACPI CA Core Subsystem: 3745 3746Implemented header file support for the following additional ACPI tables: 3747ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3748all current and known ACPI tables are now defined in the ACPICA headers and 3749are available for use by device drivers and other software. 3750 3751Implemented support to allow tables that contain ACPI names with invalid 3752characters to be loaded. Previously, this would cause the table load to 3753fail, but since there are several known cases of such tables on existing 3754machines, this change was made to enable ACPI support for them. Also, this 3755matches the behavior of the Microsoft ACPI implementation. 3756 3757Fixed a couple regressions introduced during the memory optimization in the 375820060317 release. The namespace node definition required additional 3759reorganization and an internal datatype that had been changed to 8-bit was 3760restored to 32-bit. (Valery Podrezov) 3761 3762Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3763could be passed through to AcpiOsReleaseObject which is unexpected. Such 3764null pointers are now trapped and ignored, matching the behavior of the 3765previous implementation before the deployment of AcpiOsReleaseObject. 3766(Valery Podrezov, Fiodor Suietov) 3767 3768Fixed a memory mapping leak during the deletion of a SystemMemory operation 3769region where a cached memory mapping was not deleted. This became a 3770noticeable problem for operation regions that are defined within frequently 3771used control methods. (Dana Meyers) 3772 3773Reorganized the ACPI table header files into two main files: one for the 3774ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3775ACPI tables that are consumed by the drivers and other software. The various 3776FADT definitions were merged into one common section and three different 3777tables (ACPI 1.0, 1.0+, and 2.0) 3778 3779Example Code and Data Size: These are the sizes for the OS-independent 3780acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3781debug version of the code includes the debug output trace mechanism and has 3782a much larger code and data size. 3783 3784 Previous Release: 3785 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3786 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3787 Current Release: 3788 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3789 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3790 3791 37922) iASL Compiler/Disassembler and Tools: 3793 3794Disassembler: Implemented support to decode and format all non-AML ACPI 3795tables (tables other than DSDTs and SSDTs.) This includes the new tables 3796added to the ACPICA headers, therefore all current and known ACPI tables are 3797supported. 3798 3799Disassembler: The change to allow ACPI names with invalid characters also 3800enables the disassembly of such tables. Invalid characters within names are 3801changed to '*' to make the name printable; the iASL compiler will still 3802generate an error for such names, however, since this is an invalid ACPI 3803character. 3804 3805Implemented an option for AcpiXtract (-a) to extract all tables found in the 3806input file. The default invocation extracts only the DSDTs and SSDTs. 3807 3808Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3809makefile for the AcpiXtract utility. 3810 3811---------------------------------------- 381217 March 2006. Summary of changes for version 20060317: 3813 38141) ACPI CA Core Subsystem: 3815 3816Implemented the use of a cache object for all internal namespace nodes. 3817Since there are about 1000 static nodes in a typical system, this will 3818decrease memory use for cache implementations that minimize per-allocation 3819overhead (such as a slab allocator.) 3820 3821Removed the reference count mechanism for internal namespace nodes, since it 3822was deemed unnecessary. This reduces the size of each namespace node by 3823about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3824and 32 bytes for the 64-bit case. 3825 3826Optimized several internal data structures to reduce object size on 64-bit 3827platforms by packing data within the 64-bit alignment. This includes the 3828frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3829instances corresponding to the namespace objects. 3830 3831Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3832and "Windows 2006". 3833 3834Split the allocation tracking mechanism out to a separate file, from 3835utalloc.c to uttrack.c. This mechanism appears to be only useful for 3836application-level code. Kernels may wish to not include uttrack.c in 3837distributions. 3838 3839Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3840code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3841macros.) 3842 3843Code and Data Size: These are the sizes for the acpica.lib produced by the 3844Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3845driver or OSPM code. The debug version of the code includes the debug output 3846trace mechanism and has a much larger code and data size. Note that these 3847values will vary depending on the efficiency of the compiler and the 3848compiler options used during generation. 3849 3850 Previous Release: 3851 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3852 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3853 Current Release: 3854 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3855 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3856 3857 38582) iASL Compiler/Disassembler and Tools: 3859 3860Implemented an ANSI C version of the acpixtract utility. This version will 3861automatically extract the DSDT and all SSDTs from the input acpidump text 3862file and dump the binary output to separate files. It can also display a 3863summary of the input file including the headers for each table found and 3864will extract any single ACPI table, with any signature. (See 3865source/tools/acpixtract) 3866 3867---------------------------------------- 386810 March 2006. Summary of changes for version 20060310: 3869 38701) ACPI CA Core Subsystem: 3871 3872Tagged all external interfaces to the subsystem with the new 3873ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3874kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3875macro. The default definition is NULL. 3876 3877Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3878This allows the host to define this as necessary to simplify kernel 3879integration. The default definition is ACPI_NATIVE_UINT. 3880 3881Fixed two interpreter problems related to error processing, the deletion of 3882objects, and placing invalid pointers onto the internal operator result 3883stack. BZ 6028, 6151 (Valery Podrezov) 3884 3885Increased the reference count threshold where a warning is emitted for large 3886reference counts in order to eliminate unnecessary warnings on systems with 3887large namespaces (especially 64-bit.) Increased the value from 0x400 to 38880x800. 3889 3890Due to universal disagreement as to the meaning of the 'c' in the calloc() 3891function, the ACPI_MEM_CALLOCATE macro has been renamed to 3892ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3893ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3894ACPI_FREE. 3895 3896Code and Data Size: These are the sizes for the acpica.lib produced by the 3897Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3898driver or OSPM code. The debug version of the code includes the debug output 3899trace mechanism and has a much larger code and data size. Note that these 3900values will vary depending on the efficiency of the compiler and the 3901compiler options used during generation. 3902 3903 Previous Release: 3904 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3905 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3906 Current Release: 3907 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3908 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3909 3910 39112) iASL Compiler/Disassembler: 3912 3913Disassembler: implemented support for symbolic resource descriptor 3914references. If a CreateXxxxField operator references a fixed offset within a 3915resource descriptor, a name is assigned to the descriptor and the offset is 3916translated to the appropriate resource tag and pathname. The addition of 3917this support brings the disassembled code very close to the original ASL 3918source code and helps eliminate run-time errors when the disassembled code 3919is modified (and recompiled) in such a way as to invalidate the original 3920fixed offsets. 3921 3922Implemented support for a Descriptor Name as the last parameter to the ASL 3923Register() macro. This parameter was inadvertently left out of the ACPI 3924specification, and will be added for ACPI 3.0b. 3925 3926Fixed a problem where the use of the "_OSI" string (versus the full path 3927"\_OSI") caused an internal compiler error. ("No back ptr to op") 3928 3929Fixed a problem with the error message that occurs when an invalid string is 3930used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3931The correct message is now displayed. 3932 3933---------------------------------------- 393417 February 2006. Summary of changes for version 20060217: 3935 39361) ACPI CA Core Subsystem: 3937 3938Implemented a change to the IndexField support to match the behavior of the 3939Microsoft AML interpreter. The value written to the Index register is now a 3940byte offset, no longer an index based upon the width of the Data register. 3941This should fix IndexField problems seen on some machines where the Data 3942register is not exactly one byte wide. The ACPI specification will be 3943clarified on this point. 3944 3945Fixed a problem where several resource descriptor types could overrun the 3946internal descriptor buffer due to size miscalculation: VendorShort, 3947VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3948affect all platforms. 3949 3950Fixed a problem where individual resource descriptors were misaligned within 3951the internal buffer, causing alignment faults on IA64 platforms. 3952 3953Code and Data Size: These are the sizes for the acpica.lib produced by the 3954Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3955driver or OSPM code. The debug version of the code includes the debug output 3956trace mechanism and has a much larger code and data size. Note that these 3957values will vary depending on the efficiency of the compiler and the 3958compiler options used during generation. 3959 3960 Previous Release: 3961 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3962 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3963 Current Release: 3964 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3965 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3966 3967 39682) iASL Compiler/Disassembler: 3969 3970Implemented support for new reserved names: _WDG and _WED are Microsoft 3971extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3972defined method (Throttling Depth Limit.) 3973 3974Fixed a problem where a zero-length VendorShort or VendorLong resource 3975descriptor was incorrectly emitted as a descriptor of length one. 3976 3977---------------------------------------- 397810 February 2006. Summary of changes for version 20060210: 3979 39801) ACPI CA Core Subsystem: 3981 3982Removed a couple of extraneous ACPI_ERROR messages that appeared during 3983normal execution. These became apparent after the conversion from 3984ACPI_DEBUG_PRINT. 3985 3986Fixed a problem where the CreateField operator could hang if the BitIndex or 3987NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3988 3989Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3990failed with an exception. This also fixes a couple of related RefOf and 3991DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3992 3993Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3994AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 39955480) 3996 3997Implemented a memory cleanup at the end of the execution of each iteration 3998of an AML While() loop, preventing the accumulation of outstanding objects. 3999(Valery Podrezov, BZ 5427) 4000 4001Eliminated a chunk of duplicate code in the object resolution code. (Valery 4002Podrezov, BZ 5336) 4003 4004Fixed several warnings during the 64-bit code generation. 4005 4006The AcpiSrc source code conversion tool now inserts one line of whitespace 4007after an if() statement that is followed immediately by a comment, improving 4008readability of the Linux code. 4009 4010Code and Data Size: The current and previous library sizes for the core 4011subsystem are shown below. These are the code and data sizes for the 4012acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4013values do not include any ACPI driver or OSPM code. The debug version of the 4014code includes the debug output trace mechanism and has a much larger code 4015and data size. Note that these values will vary depending on the efficiency 4016of the compiler and the compiler options used during generation. 4017 4018 Previous Release: 4019 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4020 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4021 Current Release: 4022 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4023 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4024 4025 40262) iASL Compiler/Disassembler: 4027 4028Fixed a problem with the disassembly of a BankField operator with a complex 4029expression for the BankValue parameter. 4030 4031---------------------------------------- 403227 January 2006. Summary of changes for version 20060127: 4033 40341) ACPI CA Core Subsystem: 4035 4036Implemented support in the Resource Manager to allow unresolved namestring 4037references within resource package objects for the _PRT method. This support 4038is in addition to the previously implemented unresolved reference support 4039within the AML parser. If the interpreter slack mode is enabled, these 4040unresolved references will be passed through to the caller as a NULL package 4041entry. 4042 4043Implemented and deployed new macros and functions for error and warning 4044messages across the subsystem. These macros are simpler and generate less 4045code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4046ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4047macros remain defined to allow ACPI drivers time to migrate to the new 4048macros. 4049 4050Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4051Acquire/Release Lock OSL interfaces. 4052 4053Fixed a problem where Alias ASL operators are sometimes not correctly 4054resolved, in both the interpreter and the iASL compiler. 4055 4056Fixed several problems with the implementation of the ConcatenateResTemplate 4057ASL operator. As per the ACPI specification, zero length buffers are now 4058treated as a single EndTag. One-length buffers always cause a fatal 4059exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4060cause a fatal exception. 4061 4062Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4063interface. (With assistance from Thomas Renninger) 4064 4065Code and Data Size: The current and previous library sizes for the core 4066subsystem are shown below. These are the code and data sizes for the 4067acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4068values do not include any ACPI driver or OSPM code. The debug version of the 4069code includes the debug output trace mechanism and has a much larger code 4070and data size. Note that these values will vary depending on the efficiency 4071of the compiler and the compiler options used during generation. 4072 4073 Previous Release: 4074 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4075 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4076 Current Release: 4077 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4078 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4079 4080 40812) iASL Compiler/Disassembler: 4082 4083Fixed an internal error that was generated for any forward references to ASL 4084Alias objects. 4085 4086---------------------------------------- 408713 January 2006. Summary of changes for version 20060113: 4088 40891) ACPI CA Core Subsystem: 4090 4091Added 2006 copyright to all module headers and signons. This affects 4092virtually every file in the ACPICA core subsystem, iASL compiler, and the 4093utilities. 4094 4095Enhanced the ACPICA error reporting in order to simplify user migration to 4096the non-debug version of ACPICA. Replaced all instances of the 4097ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4098levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4099respectively. This preserves all error and warning messages in the non-debug 4100version of the ACPICA code (this has been referred to as the "debug lite" 4101option.) Over 200 cases were converted to create a total of over 380 4102error/warning messages across the ACPICA code. This increases the code and 4103data size of the default non-debug version of the code somewhat (about 13K), 4104but all error/warning reporting may be disabled if desired (and code 4105eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4106configuration option. The size of the debug version of ACPICA remains about 4107the same. 4108 4109Fixed a memory leak within the AML Debugger "Set" command. One object was 4110not properly deleted for every successful invocation of the command. 4111 4112Code and Data Size: The current and previous library sizes for the core 4113subsystem are shown below. These are the code and data sizes for the 4114acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4115values do not include any ACPI driver or OSPM code. The debug version of the 4116code includes the debug output trace mechanism and has a much larger code 4117and data size. Note that these values will vary depending on the efficiency 4118of the compiler and the compiler options used during generation. 4119 4120 Previous Release: 4121 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4122 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4123 Current Release: 4124 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4125 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4126 4127 41282) iASL Compiler/Disassembler: 4129 4130The compiler now officially supports the ACPI 3.0a specification that was 4131released on December 30, 2005. (Specification is available at www.acpi.info) 4132 4133---------------------------------------- 413416 December 2005. Summary of changes for version 20051216: 4135 41361) ACPI CA Core Subsystem: 4137 4138Implemented optional support to allow unresolved names within ASL Package 4139objects. A null object is inserted in the package when a named reference 4140cannot be located in the current namespace. Enabled via the interpreter 4141slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4142that contain such code. 4143 4144Implemented an optimization to the initialization sequence that can improve 4145boot time. During ACPI device initialization, the _STA method is now run if 4146and only if the _INI method exists. The _STA method is used to determine if 4147the device is present; An _INI can only be run if _STA returns present, but 4148it is a waste of time to run the _STA method if the _INI does not exist. 4149(Prototype and assistance from Dong Wei) 4150 4151Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4152available in the current compiler. Otherwise, the default (void *) cast is 4153used as before. 4154 4155Fixed some possible memory leaks found within the execution path of the 4156Break, Continue, If, and CreateField operators. (Valery Podrezov) 4157 4158Fixed a problem introduced in the 20051202 release where an exception is 4159generated during method execution if a control method attempts to declare 4160another method. 4161 4162Moved resource descriptor string constants that are used by both the AML 4163disassembler and AML debugger to the common utilities directory so that 4164these components are independent. 4165 4166Implemented support in the AcpiExec utility (-e switch) to globally ignore 4167exceptions during control method execution (method is not aborted.) 4168 4169Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4170generation. 4171 4172Code and Data Size: The current and previous library sizes for the core 4173subsystem are shown below. These are the code and data sizes for the 4174acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4175values do not include any ACPI driver or OSPM code. The debug version of the 4176code includes the debug output trace mechanism and has a much larger code 4177and data size. Note that these values will vary depending on the efficiency 4178of the compiler and the compiler options used during generation. 4179 4180 Previous Release: 4181 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4182 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4183 Current Release: 4184 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4185 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4186 4187 41882) iASL Compiler/Disassembler: 4189 4190Fixed a problem where a CPU stack overflow fault could occur if a recursive 4191method call was made from within a Return statement. 4192 4193---------------------------------------- 419402 December 2005. Summary of changes for version 20051202: 4195 41961) ACPI CA Core Subsystem: 4197 4198Modified the parsing of control methods to no longer create namespace 4199objects during the first pass of the parse. Objects are now created only 4200during the execute phase, at the moment the namespace creation operator is 4201encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4202should eliminate ALREADY_EXISTS exceptions seen on some machines where 4203reentrant control methods are protected by an AML mutex. The mutex will now 4204correctly block multiple threads from attempting to create the same object 4205more than once. 4206 4207Increased the number of available Owner Ids for namespace object tracking 4208from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4209some machines with a large number of ACPI tables (either static or dynamic). 4210 4211Fixed a problem with the AcpiExec utility where a fault could occur when the 4212-b switch (batch mode) is used. 4213 4214Enhanced the namespace dump routine to output the owner ID for each 4215namespace object. 4216 4217Code and Data Size: The current and previous library sizes for the core 4218subsystem are shown below. These are the code and data sizes for the 4219acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4220values do not include any ACPI driver or OSPM code. The debug version of the 4221code includes the debug output trace mechanism and has a much larger code 4222and data size. Note that these values will vary depending on the efficiency 4223of the compiler and the compiler options used during generation. 4224 4225 Previous Release: 4226 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4227 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4228 Current Release: 4229 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4230 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4231 4232 42332) iASL Compiler/Disassembler: 4234 4235Fixed a parse error during compilation of certain Switch/Case constructs. To 4236simplify the parse, the grammar now allows for multiple Default statements 4237and this error is now detected and flagged during the analysis phase. 4238 4239Disassembler: The disassembly now includes the contents of the original 4240table header within a comment at the start of the file. This includes the 4241name and version of the original ASL compiler. 4242 4243---------------------------------------- 424417 November 2005. Summary of changes for version 20051117: 4245 42461) ACPI CA Core Subsystem: 4247 4248Fixed a problem in the AML parser where the method thread count could be 4249decremented below zero if any errors occurred during the method parse phase. 4250This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4251This also fixed a related regression with the mechanism that detects and 4252corrects methods that cannot properly handle reentrancy (related to the 4253deployment of the new OwnerId mechanism.) 4254 4255Eliminated the pre-parsing of control methods (to detect errors) during 4256table load. Related to the problem above, this was causing unwind issues if 4257any errors occurred during the parse, and it seemed to be overkill. A table 4258load should not be aborted if there are problems with any single control 4259method, thus rendering this feature rather pointless. 4260 4261Fixed a problem with the new table-driven resource manager where an internal 4262buffer overflow could occur for small resource templates. 4263 4264Implemented a new external interface, AcpiGetVendorResource. This interface 4265will find and return a vendor-defined resource descriptor within a _CRS or 4266_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4267 4268Removed the length limit (200) on string objects as per the upcoming ACPI 42693.0A specification. This affects the following areas of the interpreter: 1) 4270any implicit conversion of a Buffer to a String, 2) a String object result 4271of the ASL Concatentate operator, 3) the String object result of the ASL 4272ToString operator. 4273 4274Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4275on a semaphore object would incorrectly timeout. This allows the 4276multithreading features of the AcpiExec utility to work properly under 4277Windows. 4278 4279Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4280the recently added file named "utresrc.c". 4281 4282Code and Data Size: The current and previous library sizes for the core 4283subsystem are shown below. These are the code and data sizes for the 4284acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4285values do not include any ACPI driver or OSPM code. The debug version of the 4286code includes the debug output trace mechanism and has a much larger code 4287and data size. Note that these values will vary depending on the efficiency 4288of the compiler and the compiler options used during generation. 4289 4290 Previous Release: 4291 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4292 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4293 Current Release: 4294 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4295 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4296 4297 42982) iASL Compiler/Disassembler: 4299 4300Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4301specification. For the iASL compiler, this means that string literals within 4302the source ASL can be of any length. 4303 4304Enhanced the listing output to dump the AML code for resource descriptors 4305immediately after the ASL code for each descriptor, instead of in a block at 4306the end of the entire resource template. 4307 4308Enhanced the compiler debug output to dump the entire original parse tree 4309constructed during the parse phase, before any transforms are applied to the 4310tree. The transformed tree is dumped also. 4311 4312---------------------------------------- 431302 November 2005. Summary of changes for version 20051102: 4314 43151) ACPI CA Core Subsystem: 4316 4317Modified the subsystem initialization sequence to improve GPE support. The 4318GPE initialization has been split into two parts in order to defer execution 4319of the _PRW methods (Power Resources for Wake) until after the hardware is 4320fully initialized and the SCI handler is installed. This allows the _PRW 4321methods to access fields protected by the Global Lock. This will fix systems 4322where a NO_GLOBAL_LOCK exception has been seen during initialization. 4323 4324Converted the ACPI internal object disassemble and display code within the 4325AML debugger to fully table-driven operation, reducing code size and 4326increasing maintainability. 4327 4328Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4329in the 20051021 release. 4330 4331Implemented support for "local" internal ACPI object types within the 4332debugger "Object" command and the AcpiWalkNamespace external interfaces. 4333These local types include RegionFields, BankFields, IndexFields, Alias, and 4334reference objects. 4335 4336Moved common AML resource handling code into a new file, "utresrc.c". This 4337code is shared by both the Resource Manager and the AML Debugger. 4338 4339Code and Data Size: The current and previous library sizes for the core 4340subsystem are shown below. These are the code and data sizes for the 4341acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4342values do not include any ACPI driver or OSPM code. The debug version of the 4343code includes the debug output trace mechanism and has a much larger code 4344and data size. Note that these values will vary depending on the efficiency 4345of the compiler and the compiler options used during generation. 4346 4347 Previous Release: 4348 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4349 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4350 Current Release: 4351 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4352 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4353 4354 43552) iASL Compiler/Disassembler: 4356 4357Fixed a problem with very large initializer lists (more than 4000 elements) 4358for both Buffer and Package objects where the parse stack could overflow. 4359 4360Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4361characters within comment fields. The scan is now always performed and is no 4362longer optional, detecting invalid characters within a source file 4363immediately rather than during the parse phase or later. 4364 4365Enhanced the ASL grammar definition to force early reductions on all list- 4366style grammar elements so that the overall parse stack usage is greatly 4367reduced. This should improve performance and reduce the possibility of parse 4368stack overflow. 4369 4370Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4371with the addition of a %expected statement, the compiler generates from 4372source with no warnings. 4373 4374Fixed a possible segment fault in the disassembler if the input filename 4375does not contain a "dot" extension (Thomas Renninger). 4376 4377---------------------------------------- 437821 October 2005. Summary of changes for version 20051021: 4379 43801) ACPI CA Core Subsystem: 4381 4382Implemented support for the EM64T and other x86-64 processors. This 4383essentially entails recognizing that these processors support non-aligned 4384memory transfers. Previously, all 64-bit processors were assumed to lack 4385hardware support for non-aligned transfers. 4386 4387Completed conversion of the Resource Manager to nearly full table-driven 4388operation. Specifically, the resource conversion code (convert AML to 4389internal format and the reverse) and the debug code to dump internal 4390resource descriptors are fully table-driven, reducing code and data size and 4391improving maintainability. 4392 4393The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4394on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4395Alexey Starikovskiy) 4396 4397Implemented support within the resource conversion code for the Type- 4398Specific byte within the various ACPI 3.0 *WordSpace macros. 4399 4400Fixed some issues within the resource conversion code for the type-specific 4401flags for both Memory and I/O address resource descriptors. For Memory, 4402implemented support for the MTP and TTP flags. For I/O, split the TRS and 4403TTP flags into two separate fields. 4404 4405Code and Data Size: The current and previous library sizes for the core 4406subsystem are shown below. These are the code and data sizes for the 4407acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4408values do not include any ACPI driver or OSPM code. The debug version of the 4409code includes the debug output trace mechanism and has a much larger code 4410and data size. Note that these values will vary depending on the efficiency 4411of the compiler and the compiler options used during generation. 4412 4413 Previous Release: 4414 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4415 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4416 Current Release: 4417 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4418 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4419 4420 4421 44222) iASL Compiler/Disassembler: 4423 4424Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4425corresponding ResourceSource string was not also present in a resource 4426descriptor declaration. This restriction caused problems with existing 4427AML/ASL code that includes the Index byte without the string. When such AML 4428was disassembled, it could not be compiled without modification. Further, 4429the modified code created a resource template with a different size than the 4430original, breaking code that used fixed offsets into the resource template 4431buffer. 4432 4433Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4434byte. This byte is now emitted if present so that the exact AML can be 4435reproduced when the disassembled code is recompiled. 4436 4437Improved comments and text alignment for the resource descriptor code 4438emitted by the disassembler. 4439 4440Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4441Register() resource descriptor. 4442 4443---------------------------------------- 444430 September 2005. Summary of changes for version 20050930: 4445 44461) ACPI CA Core Subsystem: 4447 4448Completed a major overhaul of the Resource Manager code - specifically, 4449optimizations in the area of the AML/internal resource conversion code. The 4450code has been optimized to simplify and eliminate duplicated code, CPU stack 4451use has been decreased by optimizing function parameters and local 4452variables, and naming conventions across the manager have been standardized 4453for clarity and ease of maintenance (this includes function, parameter, 4454variable, and struct/typedef names.) The update may force changes in some 4455driver code, depending on how resources are handled by the host OS. 4456 4457All Resource Manager dispatch and information tables have been moved to a 4458single location for clarity and ease of maintenance. One new file was 4459created, named "rsinfo.c". 4460 4461The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4462guarantee that the argument is not evaluated twice, making them less prone 4463to macro side-effects. However, since there exists the possibility of 4464additional stack use if a particular compiler cannot optimize them (such as 4465in the debug generation case), the original macros are optionally available. 4466Note that some invocations of the return_VALUE macro may now cause size 4467mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4468eliminate these. (From Randy Dunlap) 4469 4470Implemented a new mechanism to enable debug tracing for individual control 4471methods. A new external interface, AcpiDebugTrace, is provided to enable 4472this mechanism. The intent is to allow the host OS to easily enable and 4473disable tracing for problematic control methods. This interface can be 4474easily exposed to a user or debugger interface if desired. See the file 4475psxface.c for details. 4476 4477AcpiUtCallocate will now return a valid pointer if a length of zero is 4478specified - a length of one is used and a warning is issued. This matches 4479the behavior of AcpiUtAllocate. 4480 4481Code and Data Size: The current and previous library sizes for the core 4482subsystem are shown below. These are the code and data sizes for the 4483acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4484values do not include any ACPI driver or OSPM code. The debug version of the 4485code includes the debug output trace mechanism and has a much larger code 4486and data size. Note that these values will vary depending on the efficiency 4487of the compiler and the compiler options used during generation. 4488 4489 Previous Release: 4490 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4491 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4492 Current Release: 4493 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4494 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4495 4496 44972) iASL Compiler/Disassembler: 4498 4499A remark is issued if the effective compile-time length of a package or 4500buffer is zero. Previously, this was a warning. 4501 4502---------------------------------------- 450316 September 2005. Summary of changes for version 20050916: 4504 45051) ACPI CA Core Subsystem: 4506 4507Fixed a problem within the Resource Manager where support for the Generic 4508Register descriptor was not fully implemented. This descriptor is now fully 4509recognized, parsed, disassembled, and displayed. 4510 4511Completely restructured the Resource Manager code to utilize table-driven 4512dispatch and lookup, eliminating many of the large switch() statements. This 4513reduces overall subsystem code size and code complexity. Affects the 4514resource parsing and construction, disassembly, and debug dump output. 4515 4516Cleaned up and restructured the debug dump output for all resource 4517descriptors. Improved readability of the output and reduced code size. 4518 4519Fixed a problem where changes to internal data structures caused the 4520optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4521 4522Code and Data Size: The current and previous library sizes for the core 4523subsystem are shown below. These are the code and data sizes for the 4524acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4525values do not include any ACPI driver or OSPM code. The debug version of the 4526code includes the debug output trace mechanism and has a much larger code 4527and data size. Note that these values will vary depending on the efficiency 4528of the compiler and the compiler options used during generation. 4529 4530 Previous Release: 4531 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4532 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4533 Current Release: 4534 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4535 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4536 4537 45382) iASL Compiler/Disassembler: 4539 4540Updated the disassembler to automatically insert an EndDependentFn() macro 4541into the ASL stream if this macro is missing in the original AML code, 4542simplifying compilation of the resulting ASL module. 4543 4544Fixed a problem in the disassembler where a disassembled ResourceSource 4545string (within a large resource descriptor) was not surrounded by quotes and 4546not followed by a comma, causing errors when the resulting ASL module was 4547compiled. Also, escape sequences within a ResourceSource string are now 4548handled correctly (especially "\\") 4549 4550---------------------------------------- 455102 September 2005. Summary of changes for version 20050902: 4552 45531) ACPI CA Core Subsystem: 4554 4555Fixed a problem with the internal Owner ID allocation and deallocation 4556mechanisms for control method execution and recursive method invocation. 4557This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4558messages seen on some systems. Recursive method invocation depth is 4559currently limited to 255. (Alexey Starikovskiy) 4560 4561Completely eliminated all vestiges of support for the "module-level 4562executable code" until this support is fully implemented and debugged. This 4563should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4564some systems that invoke this support. 4565 4566Fixed a problem within the resource manager code where the transaction flags 4567for a 64-bit address descriptor were handled incorrectly in the type- 4568specific flag byte. 4569 4570Consolidated duplicate code within the address descriptor resource manager 4571code, reducing overall subsystem code size. 4572 4573Fixed a fault when using the AML debugger "disassemble" command to 4574disassemble individual control methods. 4575 4576Removed references to the "release_current" directory within the Unix 4577release package. 4578 4579Code and Data Size: The current and previous core subsystem library sizes 4580are shown below. These are the code and data sizes for the acpica.lib 4581produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4582include any ACPI driver or OSPM code. The debug version of the code includes 4583the debug output trace mechanism and has a much larger code and data size. 4584Note that these values will vary depending on the efficiency of the compiler 4585and the compiler options used during generation. 4586 4587 Previous Release: 4588 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4589 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4590 Current Release: 4591 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4592 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4593 4594 45952) iASL Compiler/Disassembler: 4596 4597Implemented an error check for illegal duplicate values in the interrupt and 4598dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4599Interrupt(). 4600 4601Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4602too many values in the interrupt list (16 max) and invalid values in the 4603list (range 0 - 15) 4604 4605The maximum length string literal within an ASL file is now restricted to 4606200 characters as per the ACPI specification. 4607 4608Fixed a fault when using the -ln option (generate namespace listing). 4609 4610Implemented an error check to determine if a DescriptorName within a 4611resource descriptor has already been used within the current scope. 4612 4613---------------------------------------- 461415 August 2005. Summary of changes for version 20050815: 4615 46161) ACPI CA Core Subsystem: 4617 4618Implemented a full bytewise compare to determine if a table load request is 4619attempting to load a duplicate table. The compare is performed if the table 4620signatures and table lengths match. This will allow different tables with 4621the same OEM Table ID and revision to be loaded - probably against the ACPI 4622specification, but discovered in the field nonetheless. 4623 4624Added the changes.txt logfile to each of the zipped release packages. 4625 4626Code and Data Size: Current and previous core subsystem library sizes are 4627shown below. These are the code and data sizes for the acpica.lib produced 4628by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4629any ACPI driver or OSPM code. The debug version of the code includes the 4630debug output trace mechanism and has a much larger code and data size. Note 4631that these values will vary depending on the efficiency of the compiler and 4632the compiler options used during generation. 4633 4634 Previous Release: 4635 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4636 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4637 Current Release: 4638 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4639 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4640 4641 46422) iASL Compiler/Disassembler: 4643 4644Fixed a problem where incorrect AML code could be generated for Package 4645objects if optimization is disabled (via the -oa switch). 4646 4647Fixed a problem with where incorrect AML code is generated for variable- 4648length packages when the package length is not specified and the number of 4649initializer values is greater than 255. 4650 4651 4652---------------------------------------- 465329 July 2005. Summary of changes for version 20050729: 4654 46551) ACPI CA Core Subsystem: 4656 4657Implemented support to ignore an attempt to install/load a particular ACPI 4658table more than once. Apparently there exists BIOS code that repeatedly 4659attempts to load the same SSDT upon certain events. With assistance from 4660Venkatesh Pallipadi. 4661 4662Restructured the main interface to the AML parser in order to correctly 4663handle all exceptional conditions. This will prevent leakage of the OwnerId 4664resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4665machines. With assistance from Alexey Starikovskiy. 4666 4667Support for "module level code" has been disabled in this version due to a 4668number of issues that have appeared on various machines. The support can be 4669enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4670compilation. When the issues are fully resolved, the code will be enabled by 4671default again. 4672 4673Modified the internal functions for debug print support to define the 4674FunctionName parameter as a (const char *) for compatibility with compiler 4675built-in macros such as __FUNCTION__, etc. 4676 4677Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4678 4679Implemented support to display an object count summary for the AML Debugger 4680commands Object and Methods. 4681 4682Code and Data Size: Current and previous core subsystem library sizes are 4683shown below. These are the code and data sizes for the acpica.lib produced 4684by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4685any ACPI driver or OSPM code. The debug version of the code includes the 4686debug output trace mechanism and has a much larger code and data size. Note 4687that these values will vary depending on the efficiency of the compiler and 4688the compiler options used during generation. 4689 4690 Previous Release: 4691 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4692 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4693 Current Release: 4694 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4695 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4696 4697 46982) iASL Compiler/Disassembler: 4699 4700Fixed a regression that appeared in the 20050708 version of the compiler 4701where an error message was inadvertently emitted for invocations of the _OSI 4702reserved control method. 4703 4704---------------------------------------- 470508 July 2005. Summary of changes for version 20050708: 4706 47071) ACPI CA Core Subsystem: 4708 4709The use of the CPU stack in the debug version of the subsystem has been 4710considerably reduced. Previously, a debug structure was declared in every 4711function that used the debug macros. This structure has been removed in 4712favor of declaring the individual elements as parameters to the debug 4713functions. This reduces the cumulative stack use during nested execution of 4714ACPI function calls at the cost of a small increase in the code size of the 4715debug version of the subsystem. With assistance from Alexey Starikovskiy and 4716Len Brown. 4717 4718Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4719headers to define a macro that will return the current function name at 4720runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4721the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4722compiler-dependent header, the function name is saved on the CPU stack (one 4723pointer per function.) This mechanism is used because apparently there 4724exists no standard ANSI-C defined macro that that returns the function name. 4725 4726Redesigned and reimplemented the "Owner ID" mechanism used to track 4727namespace objects created/deleted by ACPI tables and control method 4728execution. A bitmap is now used to allocate and free the IDs, thus solving 4729the wraparound problem present in the previous implementation. The size of 4730the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4731Starikovskiy). 4732 4733Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4734flag definitions within the headers for the predefined ACPI tables. These 4735have been replaced by UINT8_BIT in order to increase the code portability of 4736the subsystem. If the use of UINT8 remains a problem, we may be forced to 4737eliminate bitfields entirely because of a lack of portability. 4738 4739Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4740is a frequently used function and this improvement increases the performance 4741of the entire subsystem (Alexey Starikovskiy). 4742 4743Fixed several possible memory leaks and the inverse - premature object 4744deletion (Alexey Starikovskiy). 4745 4746Code and Data Size: Current and previous core subsystem library sizes are 4747shown below. These are the code and data sizes for the acpica.lib produced 4748by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4749any ACPI driver or OSPM code. The debug version of the code includes the 4750debug output trace mechanism and has a much larger code and data size. Note 4751that these values will vary depending on the efficiency of the compiler and 4752the compiler options used during generation. 4753 4754 Previous Release: 4755 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4756 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4757 Current Release: 4758 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4759 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4760 4761---------------------------------------- 476224 June 2005. Summary of changes for version 20050624: 4763 47641) ACPI CA Core Subsystem: 4765 4766Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4767the host-defined cache object. This allows the OSL implementation to define 4768and type this object in any manner desired, simplifying the OSL 4769implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4770Linux, and should be defined in the OS-specific header file for other 4771operating systems as required. 4772 4773Changed the interface to AcpiOsAcquireObject to directly return the 4774requested object as the function return (instead of ACPI_STATUS.) This 4775change was made for performance reasons, since this is the purpose of the 4776interface in the first place. AcpiOsAcquireObject is now similar to the 4777AcpiOsAllocate interface. 4778 4779Implemented a new AML debugger command named Businfo. This command displays 4780information about all devices that have an associate _PRT object. The _ADR, 4781_HID, _UID, and _CID are displayed for these devices. 4782 4783Modified the initialization sequence in AcpiInitializeSubsystem to call the 4784OSL interface AcpiOslInitialize first, before any local initialization. This 4785change was required because the global initialization now calls OSL 4786interfaces. 4787 4788Enhanced the Dump command to display the entire contents of Package objects 4789(including all sub-objects and their values.) 4790 4791Restructured the code base to split some files because of size and/or 4792because the code logically belonged in a separate file. New files are listed 4793below. All makefiles and project files included in the ACPI CA release have 4794been updated. 4795 utilities/utcache.c /* Local cache interfaces */ 4796 utilities/utmutex.c /* Local mutex support */ 4797 utilities/utstate.c /* State object support */ 4798 interpreter/parser/psloop.c /* Main AML parse loop */ 4799 4800Code and Data Size: Current and previous core subsystem library sizes are 4801shown below. These are the code and data sizes for the acpica.lib produced 4802by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4803any ACPI driver or OSPM code. The debug version of the code includes the 4804debug output trace mechanism and has a much larger code and data size. Note 4805that these values will vary depending on the efficiency of the compiler and 4806the compiler options used during generation. 4807 4808 Previous Release: 4809 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4810 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4811 Current Release: 4812 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4813 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4814 4815 48162) iASL Compiler/Disassembler: 4817 4818Fixed a regression introduced in version 20050513 where the use of a Package 4819object within a Case() statement caused a compile time exception. The 4820original behavior has been restored (a Match() operator is emitted.) 4821 4822---------------------------------------- 482317 June 2005. Summary of changes for version 20050617: 4824 48251) ACPI CA Core Subsystem: 4826 4827Moved the object cache operations into the OS interface layer (OSL) to allow 4828the host OS to handle these operations if desired (for example, the Linux 4829OSL will invoke the slab allocator). This support is optional; the compile 4830time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4831code in the ACPI CA core. The new OSL interfaces are shown below. See 4832utalloc.c for an example implementation, and acpiosxf.h for the exact 4833interface definitions. With assistance from Alexey Starikovskiy. 4834 AcpiOsCreateCache 4835 AcpiOsDeleteCache 4836 AcpiOsPurgeCache 4837 AcpiOsAcquireObject 4838 AcpiOsReleaseObject 4839 4840Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4841and restore a flags parameter. This fits better with many OS lock models. 4842Note: the current execution state (interrupt handler or not) is no longer 4843passed to these interfaces. If necessary, the OSL must determine this state 4844by itself, a simple and fast operation. With assistance from Alexey 4845Starikovskiy. 4846 4847Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4848present if the revision of the RSDP was 2 or greater. According to the ACPI 4849specification, the XSDT is optional in all cases, and the table manager 4850therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4851Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4852only the RSDT. 4853 4854Fixed an interpreter problem with the Mid() operator in the case of an input 4855string where the resulting output string is of zero length. It now correctly 4856returns a valid, null terminated string object instead of a string object 4857with a null pointer. 4858 4859Fixed a problem with the control method argument handling to allow a store 4860to an Arg object that already contains an object of type Device. The Device 4861object is now correctly overwritten. Previously, an error was returned. 4862 4863 4864Enhanced the debugger Find command to emit object values in addition to the 4865found object pathnames. The output format is the same as the dump namespace 4866command. 4867 4868Enhanced the debugger Set command. It now has the ability to set the value 4869of any Named integer object in the namespace (Previously, only method locals 4870and args could be set.) 4871 4872Code and Data Size: Current and previous core subsystem library sizes are 4873shown below. These are the code and data sizes for the acpica.lib produced 4874by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4875any ACPI driver or OSPM code. The debug version of the code includes the 4876debug output trace mechanism and has a much larger code and data size. Note 4877that these values will vary depending on the efficiency of the compiler and 4878the compiler options used during generation. 4879 4880 Previous Release: 4881 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4882 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4883 Current Release: 4884 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4885 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4886 4887 48882) iASL Compiler/Disassembler: 4889 4890Fixed a regression in the disassembler where if/else/while constructs were 4891output incorrectly. This problem was introduced in the previous release 4892(20050526). This problem also affected the single-step disassembly in the 4893debugger. 4894 4895Fixed a problem where compiling the reserved _OSI method would randomly (but 4896rarely) produce compile errors. 4897 4898Enhanced the disassembler to emit compilable code in the face of incorrect 4899AML resource descriptors. If the optional ResourceSourceIndex is present, 4900but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4901disassembly. Otherwise, the resulting code cannot be compiled without 4902errors. 4903 4904---------------------------------------- 490526 May 2005. Summary of changes for version 20050526: 4906 49071) ACPI CA Core Subsystem: 4908 4909Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4910the module level (not within a control method.) These opcodes are executed 4911exactly once at the time the table is loaded. This type of code was legal up 4912until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4913order to provide backwards compatibility with earlier BIOS implementations. 4914This eliminates the "Encountered executable code at module level" warning 4915that was previously generated upon detection of such code. 4916 4917Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4918inadvertently be generated during the lookup of namespace objects in the 4919second pass parse of ACPI tables and control methods. It appears that this 4920problem could occur during the resolution of forward references to namespace 4921objects. 4922 4923Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4924corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4925allows the deadlock detection debug code to be compiled out in the normal 4926case, improving mutex performance (and overall subsystem performance) 4927considerably. 4928 4929Implemented a handful of miscellaneous fixes for possible memory leaks on 4930error conditions and error handling control paths. These fixes were 4931suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4932 4933Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4934to prevent a fault in this error case. 4935 4936Code and Data Size: Current and previous core subsystem library sizes are 4937shown below. These are the code and data sizes for the acpica.lib produced 4938by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4939any ACPI driver or OSPM code. The debug version of the code includes the 4940debug output trace mechanism and has a much larger code and data size. Note 4941that these values will vary depending on the efficiency of the compiler and 4942the compiler options used during generation. 4943 4944 Previous Release: 4945 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4946 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4947 Current Release: 4948 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4949 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4950 4951 49522) iASL Compiler/Disassembler: 4953 4954Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4955the module level (not within a control method.) These operators will be 4956executed once at the time the table is loaded. This type of code was legal 4957up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4958compiler in order to provide backwards compatibility with earlier BIOS ASL 4959code. 4960 4961The ACPI integer width (specified via the table revision ID or the -r 4962override, 32 or 64 bits) is now used internally during compile-time constant 4963folding to ensure that constants are truncated to 32 bits if necessary. 4964Previously, the revision ID value was only emitted in the AML table header. 4965 4966An error message is now generated for the Mutex and Method operators if the 4967SyncLevel parameter is outside the legal range of 0 through 15. 4968 4969Fixed a problem with the Method operator ParameterTypes list handling (ACPI 49703.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4971The actual underlying implementation of method argument typechecking is 4972still under development, however. 4973 4974---------------------------------------- 497513 May 2005. Summary of changes for version 20050513: 4976 49771) ACPI CA Core Subsystem: 4978 4979Implemented support for PCI Express root bridges -- added support for device 4980PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4981 4982The interpreter now automatically truncates incoming 64-bit constants to 32 4983bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4984also affects the iASL compiler constant folding. (Note: as per below, the 4985iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4986 4987Fixed a problem where string and buffer objects with "static" pointers 4988(pointers to initialization data within an ACPI table) were not handled 4989consistently. The internal object copy operation now always copies the data 4990to a newly allocated buffer, regardless of whether the source object is 4991static or not. 4992 4993Fixed a problem with the FromBCD operator where an implicit result 4994conversion was improperly performed while storing the result to the target 4995operand. Since this is an "explicit conversion" operator, the implicit 4996conversion should never be performed on the output. 4997 4998Fixed a problem with the CopyObject operator where a copy to an existing 4999named object did not always completely overwrite the existing object stored 5000at name. Specifically, a buffer-to-buffer copy did not delete the existing 5001buffer. 5002 5003Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5004structs for consistency. 5005 5006Code and Data Size: Current and previous core subsystem library sizes are 5007shown below. These are the code and data sizes for the acpica.lib produced 5008by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5009any ACPI driver or OSPM code. The debug version of the code includes the 5010debug output trace mechanism and has a much larger code and data size. Note 5011that these values will vary depending on the efficiency of the compiler and 5012the compiler options used during generation. 5013 5014 Previous Release: 5015 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5016 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5017 Current Release: (Same sizes) 5018 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5019 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5020 5021 50222) iASL Compiler/Disassembler: 5023 5024The compiler now emits a warning if an attempt is made to generate a 64-bit 5025integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5026is truncated to 32 bits. 5027 5028Fixed a problem with large package objects: if the static length of the 5029package is greater than 255, the "variable length package" opcode is 5030emitted. Previously, this caused an error. This requires an update to the 5031ACPI spec, since it currently (incorrectly) states that packages larger than 5032255 elements are not allowed. 5033 5034The disassembler now correctly handles variable length packages and packages 5035larger than 255 elements. 5036 5037---------------------------------------- 503808 April 2005. Summary of changes for version 20050408: 5039 50401) ACPI CA Core Subsystem: 5041 5042Fixed three cases in the interpreter where an "index" argument to an ASL 5043function was still (internally) 32 bits instead of the required 64 bits. 5044This was the Index argument to the Index, Mid, and Match operators. 5045 5046The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5047not a POSIX-defined function and not present in most kernel-level C 5048libraries. All references to the C library strupr function have been removed 5049from the headers. 5050 5051Completed the deployment of static functions/prototypes. All prototypes with 5052the static attribute have been moved from the headers to the owning C file. 5053 5054Implemented an extract option (-e) for the AcpiBin utility (AML binary 5055utility). This option allows the utility to extract individual ACPI tables 5056from the output of AcpiDmp. It provides the same functionality of the 5057acpixtract.pl perl script without the worry of setting the correct perl 5058options. AcpiBin runs on Windows and has not yet been generated/validated in 5059the Linux/Unix environment (but should be soon). 5060 5061Updated and fixed the table dump option for AcpiBin (-d). This option 5062converts a single ACPI table to a hex/ascii file, similar to the output of 5063AcpiDmp. 5064 5065Code and Data Size: Current and previous core subsystem library sizes are 5066shown below. These are the code and data sizes for the acpica.lib produced 5067by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5068any ACPI driver or OSPM code. The debug version of the code includes the 5069debug output trace mechanism and has a much larger code and data size. Note 5070that these values will vary depending on the efficiency of the compiler and 5071the compiler options used during generation. 5072 5073 Previous Release: 5074 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5075 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5076 Current Release: 5077 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5078 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5079 5080 50812) iASL Compiler/Disassembler: 5082 5083Disassembler fix: Added a check to ensure that the table length found in the 5084ACPI table header within the input file is not longer than the actual input 5085file size. This indicates some kind of file or table corruption. 5086 5087---------------------------------------- 508829 March 2005. Summary of changes for version 20050329: 5089 50901) ACPI CA Core Subsystem: 5091 5092An error is now generated if an attempt is made to create a Buffer Field of 5093length zero (A CreateField with a length operand of zero.) 5094 5095The interpreter now issues a warning whenever executable code at the module 5096level is detected during ACPI table load. This will give some idea of the 5097prevalence of this type of code. 5098 5099Implemented support for references to named objects (other than control 5100methods) within package objects. 5101 5102Enhanced package object output for the debug object. Package objects are now 5103completely dumped, showing all elements. 5104 5105Enhanced miscellaneous object output for the debug object. Any object can 5106now be written to the debug object (for example, a device object can be 5107written, and the type of the object will be displayed.) 5108 5109The "static" qualifier has been added to all local functions across both the 5110core subsystem and the iASL compiler. 5111 5112The number of "long" lines (> 80 chars) within the source has been 5113significantly reduced, by about 1/3. 5114 5115Cleaned up all header files to ensure that all CA/iASL functions are 5116prototyped (even static functions) and the formatting is consistent. 5117 5118Two new header files have been added, acopcode.h and acnames.h. 5119 5120Removed several obsolete functions that were no longer used. 5121 5122Code and Data Size: Current and previous core subsystem library sizes are 5123shown below. These are the code and data sizes for the acpica.lib produced 5124by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5125any ACPI driver or OSPM code. The debug version of the code includes the 5126debug output trace mechanism and has a much larger code and data size. Note 5127that these values will vary depending on the efficiency of the compiler and 5128the compiler options used during generation. 5129 5130 Previous Release: 5131 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5132 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5133 Current Release: 5134 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5135 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5136 5137 5138 51392) iASL Compiler/Disassembler: 5140 5141Fixed a problem with the resource descriptor generation/support. For the 5142ResourceSourceIndex and the ResourceSource fields, both must be present, or 5143both must be not present - can't have one without the other. 5144 5145The compiler now returns non-zero from the main procedure if any errors have 5146occurred during the compilation. 5147 5148 5149---------------------------------------- 515009 March 2005. Summary of changes for version 20050309: 5151 51521) ACPI CA Core Subsystem: 5153 5154The string-to-buffer implicit conversion code has been modified again after 5155a change to the ACPI specification. In order to match the behavior of the 5156other major ACPI implementation, the target buffer is no longer truncated if 5157the source string is smaller than an existing target buffer. This change 5158requires an update to the ACPI spec, and should eliminate the recent 5159AE_AML_BUFFER_LIMIT issues. 5160 5161The "implicit return" support was rewritten to a new algorithm that solves 5162the general case. Rather than attempt to determine when a method is about to 5163exit, the result of every ASL operator is saved momentarily until the very 5164next ASL operator is executed. Therefore, no matter how the method exits, 5165there will always be a saved implicit return value. This feature is only 5166enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5167AE_AML_NO_RETURN_VALUE errors when enabled. 5168 5169Implemented implicit conversion support for the predicate (operand) of the 5170If, Else, and While operators. String and Buffer arguments are automatically 5171converted to Integers. 5172 5173Changed the string-to-integer conversion behavior to match the new ACPI 5174errata: "If no integer object exists, a new integer is created. The ASCII 5175string is interpreted as a hexadecimal constant. Each string character is 5176interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5177with the first character as the most significant digit, and ending with the 5178first non-hexadecimal character or end-of-string." This means that the first 5179non-hex character terminates the conversion and this is the code that was 5180changed. 5181 5182Fixed a problem where the ObjectType operator would fail (fault) when used 5183on an Index of a Package which pointed to a null package element. The 5184operator now properly returns zero (Uninitialized) in this case. 5185 5186Fixed a problem where the While operator used excessive memory by not 5187properly popping the result stack during execution. There was no memory leak 5188after execution, however. (Code provided by Valery Podrezov.) 5189 5190Fixed a problem where references to control methods within Package objects 5191caused the method to be invoked, instead of producing a reference object 5192pointing to the method. 5193 5194Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5195improve performance and reduce code size. (Code provided by Alexey 5196Starikovskiy.) 5197 5198Code and Data Size: Current and previous core subsystem library sizes are 5199shown below. These are the code and data sizes for the acpica.lib produced 5200by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5201any ACPI driver or OSPM code. The debug version of the code includes the 5202debug output trace mechanism and has a much larger code and data size. Note 5203that these values will vary depending on the efficiency of the compiler and 5204the compiler options used during generation. 5205 5206 Previous Release: 5207 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5208 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5209 Current Release: 5210 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5211 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5212 5213 52142) iASL Compiler/Disassembler: 5215 5216Fixed a problem with the Return operator with no arguments. Since the AML 5217grammar for the byte encoding requires an operand for the Return opcode, the 5218compiler now emits a Return(Zero) for this case. An ACPI specification 5219update has been written for this case. 5220 5221For tables other than the DSDT, namepath optimization is automatically 5222disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5223compiler has no knowledge of where, and thus cannot optimize namepaths. 5224 5225Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5226inadvertently omitted from the ACPI specification, and will require an 5227update to the spec. 5228 5229The source file scan for ASCII characters is now optional (-a). This change 5230was made because some vendors place non-ascii characters within comments. 5231However, the scan is simply a brute-force byte compare to ensure all 5232characters in the file are in the range 0x00 to 0x7F. 5233 5234Fixed a problem with the CondRefOf operator where the compiler was 5235inappropriately checking for the existence of the target. Since the point of 5236the operator is to check for the existence of the target at run-time, the 5237compiler no longer checks for the target existence. 5238 5239Fixed a problem where errors generated from the internal AML interpreter 5240during constant folding were not handled properly, causing a fault. 5241 5242Fixed a problem with overly aggressive range checking for the Stall 5243operator. The valid range (max 255) is now only checked if the operand is of 5244type Integer. All other operand types cannot be statically checked. 5245 5246Fixed a problem where control method references within the RefOf, DeRefOf, 5247and ObjectType operators were not treated properly. They are now treated as 5248actual references, not method invocations. 5249 5250Fixed and enhanced the "list namespace" option (-ln). This option was broken 5251a number of releases ago. 5252 5253Improved error handling for the Field, IndexField, and BankField operators. 5254The compiler now cleanly reports and recovers from errors in the field 5255component (FieldUnit) list. 5256 5257Fixed a disassembler problem where the optional ResourceDescriptor fields 5258TRS and TTP were not always handled correctly. 5259 5260Disassembler - Comments in output now use "//" instead of "/*" 5261 5262---------------------------------------- 526328 February 2005. Summary of changes for version 20050228: 5264 52651) ACPI CA Core Subsystem: 5266 5267Fixed a problem where the result of an Index() operator (an object 5268reference) must increment the reference count on the target object for the 5269life of the object reference. 5270 5271Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5272Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5273resource descriptors. 5274 5275Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5276Space Descriptor" string, indicating interpreter support for the descriptors 5277above. 5278 5279Implemented header support for the new ACPI 3.0 FADT flag bits. 5280 5281Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5282status/enable registers. 5283 5284Updated header support for the MADT processor local Apic struct and MADT 5285platform interrupt source struct for new ACPI 3.0 fields. 5286 5287Implemented header support for the SRAT and SLIT ACPI tables. 5288 5289Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5290at runtime. 5291 5292Code and Data Size: Current and previous core subsystem library sizes are 5293shown below. These are the code and data sizes for the acpica.lib produced 5294by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5295any ACPI driver or OSPM code. The debug version of the code includes the 5296debug output trace mechanism and has a much larger code and data size. Note 5297that these values will vary depending on the efficiency of the compiler and 5298the compiler options used during generation. 5299 5300 Previous Release: 5301 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5302 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5303 Current Release: 5304 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5305 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5306 5307 53082) iASL Compiler/Disassembler: 5309 5310Fixed a problem with the internal 64-bit String-to-integer conversion with 5311strings less than two characters long. 5312 5313Fixed a problem with constant folding where the result of the Index() 5314operator can not be considered a constant. This means that Index() cannot be 5315a type3 opcode and this will require an update to the ACPI specification. 5316 5317Disassembler: Implemented support for the TTP, MTP, and TRS resource 5318descriptor fields. These fields were inadvertently ignored and not output in 5319the disassembly of the resource descriptor. 5320 5321 5322 ---------------------------------------- 532311 February 2005. Summary of changes for version 20050211: 5324 53251) ACPI CA Core Subsystem: 5326 5327Implemented ACPI 3.0 support for implicit conversion within the Match() 5328operator. MatchObjects can now be of type integer, buffer, or string instead 5329of just type integer. Package elements are implicitly converted to the type 5330of the MatchObject. This change aligns the behavior of Match() with the 5331behavior of the other logical operators (LLess(), etc.) It also requires an 5332errata change to the ACPI specification as this support was intended for 5333ACPI 3.0, but was inadvertently omitted. 5334 5335Fixed a problem with the internal implicit "to buffer" conversion. Strings 5336that are converted to buffers will cause buffer truncation if the string is 5337smaller than the target buffer. Integers that are converted to buffers will 5338not cause buffer truncation, only zero extension (both as per the ACPI 5339spec.) The problem was introduced when code was added to truncate the 5340buffer, but this should not be performed in all cases, only the string case. 5341 5342Fixed a problem with the Buffer and Package operators where the interpreter 5343would get confused if two such operators were used as operands to an ASL 5344operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5345stack was not being popped after the execution of these operators, resulting 5346in an AE_NO_RETURN_VALUE exception. 5347 5348Fixed a problem with constructs of the form Store(Index(...),...). The 5349reference object returned from Index was inadvertently resolved to an actual 5350value. This problem was introduced in version 20050114 when the behavior of 5351Store() was modified to restrict the object types that can be used as the 5352source operand (to match the ACPI specification.) 5353 5354Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5355 5356Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5357 5358Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5359 5360Code and Data Size: Current and previous core subsystem library sizes are 5361shown below. These are the code and data sizes for the acpica.lib produced 5362by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5363any ACPI driver or OSPM code. The debug version of the code includes the 5364debug output trace mechanism and has a much larger code and data size. Note 5365that these values will vary depending on the efficiency of the compiler and 5366the compiler options used during generation. 5367 5368 Previous Release: 5369 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5370 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5371 Current Release: 5372 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5373 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5374 5375 53762) iASL Compiler/Disassembler: 5377 5378Fixed a code generation problem in the constant folding optimization code 5379where incorrect code was generated if a constant was reduced to a buffer 5380object (i.e., a reduced type 5 opcode.) 5381 5382Fixed a typechecking problem for the ToBuffer operator. Caused by an 5383incorrect return type in the internal opcode information table. 5384 5385---------------------------------------- 538625 January 2005. Summary of changes for version 20050125: 5387 53881) ACPI CA Core Subsystem: 5389 5390Fixed a recently introduced problem with the Global Lock where the 5391underlying semaphore was not created. This problem was introduced in 5392version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5393Acquire() operation on _GL. 5394 5395The local object cache is now optional, and is disabled by default. Both 5396AcpiExec and the iASL compiler enable the cache because they run in user 5397mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5398to enable the local cache. 5399 5400Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5401optional "implicit return" support where an error was returned if no return 5402object was expected, but one was implicitly returned. AE_OK is now returned 5403in this case and the implicitly returned object is deleted. 5404AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5405methods such as _STA and _INI where the return type is known up front. 5406 5407Fixed a few issues with the internal convert-to-integer code. It now returns 5408an error if an attempt is made to convert a null string, a string of only 5409blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5410and explicit conversion via the ToInteger() operator. 5411 5412The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5413not needed for normal operation and should increase the performance of the 5414entire subsystem. The code remains in case it is needed for debug purposes 5415again. 5416 5417The AcpiExec source and makefile are included in the Unix/Linux package for 5418the first time. 5419 5420Code and Data Size: Current and previous core subsystem library sizes are 5421shown below. These are the code and data sizes for the acpica.lib produced 5422by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5423any ACPI driver or OSPM code. The debug version of the code includes the 5424debug output trace mechanism and has a much larger code and data size. Note 5425that these values will vary depending on the efficiency of the compiler and 5426the compiler options used during generation. 5427 5428 Previous Release: 5429 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5430 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5431 Current Release: 5432 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5433 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5434 54352) iASL Compiler/Disassembler: 5436 5437Switch/Case support: A warning is now issued if the type of the Switch value 5438cannot be determined at compile time. For example, Switch(Arg0) will 5439generate the warning, and the type is assumed to be an integer. As per the 5440ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5441warning. 5442 5443Switch/Case support: Implemented support for buffer and string objects as 5444the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5445buffers and strings. 5446 5447Switch/Case support: The emitted code for the LEqual() comparisons now uses 5448the switch value as the first operand, not the second. The case value is now 5449the second operand, and this allows the case value to be implicitly 5450converted to the type of the switch value, not the other way around. 5451 5452Switch/Case support: Temporary variables are now emitted immediately within 5453the control method, not at the global level. This means that there are now 545436 temps available per-method, not 36 temps per-module as was the case with 5455the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5456 5457---------------------------------------- 545814 January 2005. Summary of changes for version 20050114: 5459 5460Added 2005 copyright to all module headers. This affects every module in 5461the core subsystem, iASL compiler, and the utilities. 5462 54631) ACPI CA Core Subsystem: 5464 5465Fixed an issue with the String-to-Buffer conversion code where the string 5466null terminator was not included in the buffer after conversion, but there 5467is existing ASL that assumes the string null terminator is included. This is 5468the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5469introduced in the previous version when the code was updated to correctly 5470set the converted buffer size as per the ACPI specification. The ACPI spec 5471is ambiguous and will be updated to specify that the null terminator must be 5472included in the converted buffer. This also affects the ToBuffer() ASL 5473operator. 5474 5475Fixed a problem with the Mid() ASL/AML operator where it did not work 5476correctly on Buffer objects. Newly created sub-buffers were not being marked 5477as initialized. 5478 5479 5480Fixed a problem in AcpiTbFindTable where incorrect string compares were 5481performed on the OemId and OemTableId table header fields. These fields are 5482not null terminated, so strncmp is now used instead of strcmp. 5483 5484Implemented a restriction on the Store() ASL/AML operator to align the 5485behavior with the ACPI specification. Previously, any object could be used 5486as the source operand. Now, the only objects that may be used are Integers, 5487Buffers, Strings, Packages, Object References, and DDB Handles. If 5488necessary, the original behavior can be restored by enabling the 5489EnableInterpreterSlack flag. 5490 5491Enhanced the optional "implicit return" support to allow an implicit return 5492value from methods that are invoked externally via the AcpiEvaluateObject 5493interface. This enables implicit returns from the _STA and _INI methods, 5494for example. 5495 5496Changed the Revision() ASL/AML operator to return the current version of the 5497AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5498the supported ACPI version (This is the function of the _REV method). 5499 5500Updated the _REV predefined method to return the currently supported version 5501of ACPI, now 3. 5502 5503Implemented batch mode option for the AcpiExec utility (-b). 5504 5505Code and Data Size: Current and previous core subsystem library sizes are 5506shown below. These are the code and data sizes for the acpica.lib produced 5507by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5508any ACPI driver or OSPM code. The debug version of the code includes the 5509debug output trace mechanism and has a much larger code and data size. Note 5510that these values will vary depending on the efficiency of the compiler and 5511the compiler options used during generation. 5512 5513 Previous Release: 5514 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5515 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5516 Current Release: 5517 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5518 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5519 5520---------------------------------------- 552110 December 2004. Summary of changes for version 20041210: 5522 5523ACPI 3.0 support is nearing completion in both the iASL compiler and the 5524ACPI CA core subsystem. 5525 55261) ACPI CA Core Subsystem: 5527 5528Fixed a problem in the ToDecimalString operator where the resulting string 5529length was incorrectly calculated. The length is now calculated exactly, 5530eliminating incorrect AE_STRING_LIMIT exceptions. 5531 5532Fixed a problem in the ToHexString operator to allow a maximum 200 character 5533string to be produced. 5534 5535Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5536routine where the length of the resulting buffer was not truncated to the 5537new size (if the target buffer already existed). 5538 5539Code and Data Size: Current and previous core subsystem library sizes are 5540shown below. These are the code and data sizes for the acpica.lib produced 5541by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5542any ACPI driver or OSPM code. The debug version of the code includes the 5543debug output trace mechanism and has a much larger code and data size. Note 5544that these values will vary depending on the efficiency of the compiler and 5545the compiler options used during generation. 5546 5547 Previous Release: 5548 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5549 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5550 Current Release: 5551 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5552 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5553 5554 55552) iASL Compiler/Disassembler: 5556 5557Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5558ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5559Includes support in the disassembler. 5560 5561Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5562AccessSize. 5563 5564Fixed a problem where the _HE resource name for the Interrupt macro was 5565referencing bit 0 instead of bit 1. 5566 5567Implemented check for maximum 255 interrupts in the Interrupt macro. 5568 5569Fixed a problem with the predefined resource descriptor names where 5570incorrect AML code was generated if the offset within the resource buffer 5571was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5572but did not update the surrounding package lengths. 5573 5574Changes to the Dma macro: All channels within the channel list must be in 5575the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5576optional (default is BusMaster). 5577 5578Implemented check for maximum 7 data bytes for the VendorShort macro. 5579 5580The ReadWrite parameter is now optional for the Memory32 and similar macros. 5581 5582---------------------------------------- 558303 December 2004. Summary of changes for version 20041203: 5584 55851) ACPI CA Core Subsystem: 5586 5587The low-level field insertion/extraction code (exfldio) has been completely 5588rewritten to eliminate unnecessary complexity, bugs, and boundary 5589conditions. 5590 5591Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5592operators where the input operand could be inadvertently deleted if no 5593conversion was necessary (e.g., if the input to ToInteger was an Integer 5594object.) 5595 5596Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5597exception code was returned if the resulting string would be > 200 chars. 5598AE_STRING_LIMIT is now returned. 5599 5600Fixed a problem with the Concatenate operator where AE_OK was always 5601returned, even if the operation failed. 5602 5603Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5604semaphores to be allocated. 5605 5606Code and Data Size: Current and previous core subsystem library sizes are 5607shown below. These are the code and data sizes for the acpica.lib produced 5608by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5609any ACPI driver or OSPM code. The debug version of the code includes the 5610debug output trace mechanism and has a much larger code and data size. Note 5611that these values will vary depending on the efficiency of the compiler and 5612the compiler options used during generation. 5613 5614 Previous Release: 5615 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5616 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5617 Current Release: 5618 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5619 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5620 5621 56222) iASL Compiler/Disassembler: 5623 5624Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5625recently introduced in 20041119. 5626 5627Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5628byte was inadvertently set to zero. 5629 5630---------------------------------------- 563119 November 2004. Summary of changes for version 20041119: 5632 56331) ACPI CA Core Subsystem: 5634 5635Fixed a problem in the internal ConvertToInteger routine where new integers 5636were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5637buffers and strings to integers. 5638 5639Implemented support to store a value to an Index() on a String object. This 5640is an ACPI 2.0 feature that had not yet been implemented. 5641 5642Implemented new behavior for storing objects to individual package elements 5643(via the Index() operator). The previous behavior was to invoke the implicit 5644conversion rules if an object was already present at the index. The new 5645behavior is to simply delete any existing object and directly store the new 5646object. Although the ACPI specification seems unclear on this subject, other 5647ACPI implementations behave in this manner. (This is the root of the 5648AE_BAD_HEX_CONSTANT issue.) 5649 5650Modified the RSDP memory scan mechanism to support the extended checksum for 5651ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5652RSDP signature is found with a valid checksum. 5653 5654Code and Data Size: Current and previous core subsystem library sizes are 5655shown below. These are the code and data sizes for the acpica.lib produced 5656by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5657any ACPI driver or OSPM code. The debug version of the code includes the 5658debug output trace mechanism and has a much larger code and data size. Note 5659that these values will vary depending on the efficiency of the compiler and 5660the compiler options used during generation. 5661 5662 Previous Release: 5663 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5664 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5665 Current Release: 5666 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5667 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5668 5669 56702) iASL Compiler/Disassembler: 5671 5672Fixed a missing semicolon in the aslcompiler.y file. 5673 5674---------------------------------------- 567505 November 2004. Summary of changes for version 20041105: 5676 56771) ACPI CA Core Subsystem: 5678 5679Implemented support for FADT revision 2. This was an interim table (between 5680ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5681 5682Implemented optional support to allow uninitialized LocalX and ArgX 5683variables in a control method. The variables are initialized to an Integer 5684object with a value of zero. This support is enabled by setting the 5685AcpiGbl_EnableInterpreterSlack flag to TRUE. 5686 5687Implemented support for Integer objects for the SizeOf operator. Either 4 5688or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5689depending on the parent table revision). 5690 5691Fixed a problem in the implementation of the SizeOf and ObjectType operators 5692where the operand was resolved to a value too early, causing incorrect 5693return values for some objects. 5694 5695Fixed some possible memory leaks during exceptional conditions. 5696 5697Code and Data Size: Current and previous core subsystem library sizes are 5698shown below. These are the code and data sizes for the acpica.lib produced 5699by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5700any ACPI driver or OSPM code. The debug version of the code includes the 5701debug output trace mechanism and has a much larger code and data size. Note 5702that these values will vary depending on the efficiency of the compiler and 5703the compiler options used during generation. 5704 5705 Previous Release: 5706 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5707 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5708 Current Release: 5709 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5710 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5711 5712 57132) iASL Compiler/Disassembler: 5714 5715Implemented support for all ACPI 3.0 reserved names and methods. 5716 5717Implemented all ACPI 3.0 grammar elements in the front-end, including 5718support for semicolons. 5719 5720Implemented the ACPI 3.0 Function() and ToUUID() macros 5721 5722Fixed a problem in the disassembler where a Scope() operator would not be 5723emitted properly if the target of the scope was in another table. 5724 5725---------------------------------------- 572615 October 2004. Summary of changes for version 20041015: 5727 5728Note: ACPI CA is currently undergoing an in-depth and complete formal 5729evaluation to test/verify the following areas. Other suggestions are 5730welcome. This will result in an increase in the frequency of releases and 5731the number of bug fixes in the next few months. 5732 - Functional tests for all ASL/AML operators 5733 - All implicit/explicit type conversions 5734 - Bit fields and operation regions 5735 - 64-bit math support and 32-bit-only "truncated" math support 5736 - Exceptional conditions, both compiler and interpreter 5737 - Dynamic object deletion and memory leaks 5738 - ACPI 3.0 support when implemented 5739 - External interfaces to the ACPI subsystem 5740 5741 57421) ACPI CA Core Subsystem: 5743 5744Fixed two alignment issues on 64-bit platforms - within debug statements in 5745AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5746field within the non-aligned ACPI generic address structure. 5747 5748Fixed a problem in the Increment and Decrement operators where incorrect 5749operand resolution could result in the inadvertent modification of the 5750original integer when the integer is passed into another method as an 5751argument and the arg is then incremented/decremented. 5752 5753Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5754BCD number were truncated during conversion. 5755 5756Fixed a problem in the ToDecimal operator where the length of the resulting 5757string could be set incorrectly too long if the input operand was a Buffer 5758object. 5759 5760Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5761within a buffer would prematurely terminate a compare between buffer 5762objects. 5763 5764Added a check for string overflow (>200 characters as per the ACPI 5765specification) during the Concatenate operator with two string operands. 5766 5767Code and Data Size: Current and previous core subsystem library sizes are 5768shown below. These are the code and data sizes for the acpica.lib produced 5769by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5770any ACPI driver or OSPM code. The debug version of the code includes the 5771debug output trace mechanism and has a much larger code and data size. Note 5772that these values will vary depending on the efficiency of the compiler and 5773the compiler options used during generation. 5774 5775 Previous Release: 5776 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5777 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5778 Current Release: 5779 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5780 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5781 5782 5783 57842) iASL Compiler/Disassembler: 5785 5786Allow the use of the ObjectType operator on uninitialized Locals and Args 5787(returns 0 as per the ACPI specification). 5788 5789Fixed a problem where the compiler would fault if there was a syntax error 5790in the FieldName of all of the various CreateXXXField operators. 5791 5792Disallow the use of lower case letters within the EISAID macro, as per the 5793ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5794U is an uppercase letter and N is a hex digit. 5795 5796 5797---------------------------------------- 579806 October 2004. Summary of changes for version 20041006: 5799 58001) ACPI CA Core Subsystem: 5801 5802Implemented support for the ACPI 3.0 Timer operator. This ASL function 5803implements a 64-bit timer with 100 nanosecond granularity. 5804 5805Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5806implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5807the timer with the best clock available. Also, it keeps the core subsystem 5808out of the clock handling business, since the host OS (usually) performs 5809this function. 5810 5811Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5812functions use a 64-bit address which is part of the packed ACPI Generic 5813Address Structure. Since the structure is non-aligned, the alignment macros 5814are now used to extract the address to a local variable before use. 5815 5816Fixed a problem where the ToInteger operator assumed all input strings were 5817hexadecimal. The operator now handles both decimal strings and hex strings 5818(prefixed with "0x"). 5819 5820Fixed a problem where the string length in the string object created as a 5821result of the internal ConvertToString procedure could be incorrect. This 5822potentially affected all implicit conversions and also the ToDecimalString 5823and ToHexString operators. 5824 5825Fixed two problems in the ToString operator. If the length parameter was 5826zero, an incorrect string object was created and the value of the input 5827length parameter was inadvertently changed from zero to Ones. 5828 5829Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5830resource macro was ignored. 5831 5832Simplified the interfaces to the internal division functions, reducing code 5833size and complexity. 5834 5835Code and Data Size: Current and previous core subsystem library sizes are 5836shown below. These are the code and data sizes for the acpica.lib produced 5837by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5838any ACPI driver or OSPM code. The debug version of the code includes the 5839debug output trace mechanism and has a much larger code and data size. Note 5840that these values will vary depending on the efficiency of the compiler and 5841the compiler options used during generation. 5842 5843 Previous Release: 5844 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5845 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5846 Current Release: 5847 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5848 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5849 5850 58512) iASL Compiler/Disassembler: 5852 5853Implemented support for the ACPI 3.0 Timer operator. 5854 5855Fixed a problem where the Default() operator was inadvertently ignored in a 5856Switch/Case block. This was a problem in the translation of the Switch 5857statement to If...Else pairs. 5858 5859Added support to allow a standalone Return operator, with no parentheses (or 5860operands). 5861 5862Fixed a problem with code generation for the ElseIf operator where the 5863translated Else...If parse tree was improperly constructed leading to the 5864loss of some code. 5865 5866---------------------------------------- 586722 September 2004. Summary of changes for version 20040922: 5868 58691) ACPI CA Core Subsystem: 5870 5871Fixed a problem with the implementation of the LNot() operator where "Ones" 5872was not returned for the TRUE case. Changed the code to return Ones instead 5873of (!Arg) which was usually 1. This change affects iASL constant folding for 5874this operator also. 5875 5876Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5877initialized properly -- Now zero the entire buffer in this case where the 5878buffer already exists. 5879 5880Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5881Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5882related code considerably. This will require changes/updates to all OS 5883interface layers (OSLs.) 5884 5885Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5886a system exception handler to be installed. This handler is invoked upon any 5887run-time exception that occurs during control method execution. 5888 5889Added support for the DSDT in AcpiTbFindTable. This allows the 5890DataTableRegion() operator to access the local copy of the DSDT. 5891 5892Code and Data Size: Current and previous core subsystem library sizes are 5893shown below. These are the code and data sizes for the acpica.lib produced 5894by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5895any ACPI driver or OSPM code. The debug version of the code includes the 5896debug output trace mechanism and has a much larger code and data size. Note 5897that these values will vary depending on the efficiency of the compiler and 5898the compiler options used during generation. 5899 5900 Previous Release: 5901 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5902 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5903 Current Release: 5904 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5905 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5906 5907 59082) iASL Compiler/Disassembler: 5909 5910Fixed a problem with constant folding and the LNot operator. LNot was 5911returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5912could result in the generation of an incorrect folded/reduced constant. 5913 5914End-Of-File is now allowed within a "//"-style comment. A parse error no 5915longer occurs if such a comment is at the very end of the input ASL source 5916file. 5917 5918Implemented the "-r" option to override the Revision in the table header. 5919The initial use of this option will be to simplify the evaluation of the AML 5920interpreter by allowing a single ASL source module to be compiled for either 592132-bit or 64-bit integers. 5922 5923 5924---------------------------------------- 592527 August 2004. Summary of changes for version 20040827: 5926 59271) ACPI CA Core Subsystem: 5928 5929- Implemented support for implicit object conversion in the non-numeric 5930logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5931LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5932the second operand is implicitly converted on the fly to match the type of 5933the first operand. For example: 5934 5935 LEqual (Source1, Source2) 5936 5937Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5938The data type of Source1 dictates the required type of Source2. Source2 is 5939implicitly converted if necessary to match the type of Source1. 5940 5941- Updated and corrected the behavior of the string conversion support. The 5942rules concerning conversion of buffers to strings (according to the ACPI 5943specification) are as follows: 5944 5945ToDecimalString - explicit byte-wise conversion of buffer to string of 5946decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5947conversion of buffer to string of hex values (0-FF) separated by commas. 5948ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5949copy with no transform except NULL terminated. Any other implicit buffer-to- 5950string conversion - byte-wise conversion of buffer to string of hex values 5951(0-FF) separated by spaces. 5952 5953- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5954 5955- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5956one byte too short in the case of a node in the root scope. This could 5957cause a fault during debug output. 5958 5959- Code and Data Size: Current and previous core subsystem library sizes are 5960shown below. These are the code and data sizes for the acpica.lib produced 5961by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5962any ACPI driver or OSPM code. The debug version of the code includes the 5963debug output trace mechanism and has a much larger code and data size. Note 5964that these values will vary depending on the efficiency of the compiler and 5965the compiler options used during generation. 5966 5967 Previous Release: 5968 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5969 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5970 Current Release: 5971 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5972 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5973 5974 59752) iASL Compiler/Disassembler: 5976 5977- Fixed a Linux generation error. 5978 5979 5980---------------------------------------- 598116 August 2004. Summary of changes for version 20040816: 5982 59831) ACPI CA Core Subsystem: 5984 5985Designed and implemented support within the AML interpreter for the so- 5986called "implicit return". This support returns the result of the last ASL 5987operation within a control method, in the absence of an explicit Return() 5988operator. A few machines depend on this behavior, even though it is not 5989explicitly supported by the ASL language. It is optional support that can 5990be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5991 5992Removed support for the PCI_Config address space from the internal low level 5993hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5994support was not used internally, and would not work correctly anyway because 5995the PCI bus number and segment number were not supported. There are 5996separate interfaces for PCI configuration space access because of the unique 5997interface. 5998 5999Code and Data Size: Current and previous core subsystem library sizes are 6000shown below. These are the code and data sizes for the acpica.lib produced 6001by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6002any ACPI driver or OSPM code. The debug version of the code includes the 6003debug output trace mechanism and has a much larger code and data size. Note 6004that these values will vary depending on the efficiency of the compiler and 6005the compiler options used during generation. 6006 6007 Previous Release: 6008 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6009 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6010 Current Release: 6011 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6012 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6013 6014 60152) iASL Compiler/Disassembler: 6016 6017Fixed a problem where constants in ASL expressions at the root level (not 6018within a control method) could be inadvertently truncated during code 6019generation. This problem was introduced in the 20040715 release. 6020 6021 6022---------------------------------------- 602315 July 2004. Summary of changes for version 20040715: 6024 60251) ACPI CA Core Subsystem: 6026 6027Restructured the internal HW GPE interfaces to pass/track the current state 6028of interrupts (enabled/disabled) in order to avoid possible deadlock and 6029increase flexibility of the interfaces. 6030 6031Implemented a "lexicographical compare" for String and Buffer objects within 6032the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6033as per further clarification to the ACPI specification. Behavior is similar 6034to C library "strcmp". 6035 6036Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6037external function. In the 32-bit non-debug case, the stack use has been 6038reduced from 168 bytes to 32 bytes. 6039 6040Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6041whose purpose is to allow the AML interpreter to forgive certain bad AML 6042constructs. Default setting is FALSE. 6043 6044Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6045support code. If enabled, it allows field access to go beyond the end of a 6046region definition if the field is within the region length rounded up to the 6047next access width boundary (a common coding error.) 6048 6049Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6050ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6051symbols are lowercased by the latest version of the AcpiSrc tool. 6052 6053The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6054rename "Register" to simply "Reg" to prevent certain compilers from 6055complaining. 6056 6057Code and Data Size: Current and previous core subsystem library sizes are 6058shown below. These are the code and data sizes for the acpica.lib produced 6059by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6060any ACPI driver or OSPM code. The debug version of the code includes the 6061debug output trace mechanism and has a much larger code and data size. Note 6062that these values will vary depending on the efficiency of the compiler and 6063the compiler options used during generation. 6064 6065 Previous Release: 6066 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6067 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6068 Current Release: 6069 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6070 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6071 6072 60732) iASL Compiler/Disassembler: 6074 6075Implemented full support for Package objects within the Case() operator. 6076Note: The Break() operator is currently not supported within Case blocks 6077(TermLists) as there is some question about backward compatibility with ACPI 60781.0 interpreters. 6079 6080 6081Fixed a problem where complex terms were not supported properly within the 6082Switch() operator. 6083 6084Eliminated extraneous warning for compiler-emitted reserved names of the 6085form "_T_x". (Used in Switch/Case operators.) 6086 6087Eliminated optimization messages for "_T_x" objects and small constants 6088within the DefinitionBlock operator. 6089 6090 6091---------------------------------------- 609215 June 2004. Summary of changes for version 20040615: 6093 60941) ACPI CA Core Subsystem: 6095 6096Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6097following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6098LLessEqual. 6099 6100All directory names in the entire source package are lower case, as they 6101were in earlier releases. 6102 6103Implemented "Disassemble" command in the AML debugger that will disassemble 6104a single control method. 6105 6106Code and Data Size: Current and previous core subsystem library sizes are 6107shown below. These are the code and data sizes for the acpica.lib produced 6108by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6109any ACPI driver or OSPM code. The debug version of the code includes the 6110debug output trace mechanism and has a much larger code and data size. Note 6111that these values will vary depending on the efficiency of the compiler and 6112the compiler options used during generation. 6113 6114 Previous Release: 6115 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6116 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6117 6118 Current Release: 6119 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6120 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6121 6122 61232) iASL Compiler/Disassembler: 6124 6125Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6126following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6127LLessEqual. 6128 6129All directory names in the entire source package are lower case, as they 6130were in earlier releases. 6131 6132Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6133not found. 6134 6135Fixed an issue with the Windows version of the compiler where later versions 6136of Windows place the FADT in the registry under the name "FADT" and not 6137"FACP" as earlier versions did. This applies when using the -g or - 6138d<nofilename> options. The compiler now looks for both strings as 6139necessary. 6140 6141Fixed a problem with compiler namepath optimization where a namepath within 6142the Scope() operator could not be optimized if the namepath was a subpath of 6143the current scope path. 6144 6145---------------------------------------- 614627 May 2004. Summary of changes for version 20040527: 6147 61481) ACPI CA Core Subsystem: 6149 6150Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6151support in the RSDP scan code. The original code improperly scanned for the 6152EBDA by simply scanning from memory location 0 to 0x400. The correct method 6153is to first obtain the EBDA pointer from within the BIOS data area, then 6154scan 1K of memory starting at the EBDA pointer. There appear to be few if 6155any machines that place the RSDP in the EBDA, however. 6156 6157Integrated a fix for a possible fault during evaluation of BufferField 6158arguments. Obsolete code that was causing the problem was removed. 6159 6160Found and fixed a problem in the Field Support Code where data could be 6161corrupted on a bit field read that starts on an aligned boundary but does 6162not end on an aligned boundary. Merged the read/write "datum length" 6163calculation code into a common procedure. 6164 6165Rolled in a couple of changes to the FreeBSD-specific header. 6166 6167 6168Code and Data Size: Current and previous core subsystem library sizes are 6169shown below. These are the code and data sizes for the acpica.lib produced 6170by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6171any ACPI driver or OSPM code. The debug version of the code includes the 6172debug output trace mechanism and has a much larger code and data size. Note 6173that these values will vary depending on the efficiency of the compiler and 6174the compiler options used during generation. 6175 6176 Previous Release: 6177 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6178 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6179 Current Release: 6180 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6181 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6182 6183 61842) iASL Compiler/Disassembler: 6185 6186Fixed a generation warning produced by some overly-verbose compilers for a 618764-bit constant. 6188 6189---------------------------------------- 619014 May 2004. Summary of changes for version 20040514: 6191 61921) ACPI CA Core Subsystem: 6193 6194Fixed a problem where hardware GPE enable bits sometimes not set properly 6195during and after GPE method execution. Result of 04/27 changes. 6196 6197Removed extra "clear all GPEs" when sleeping/waking. 6198 6199Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6200AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6201the new AcpiEv* calls as appropriate. 6202 6203ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6204now "Microsoft Windows NT" for maximum compatibility. However this can be 6205changed by modifying the acconfig.h file. 6206 6207Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6208traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6209 6210Run _INI methods on ThermalZone objects. This is against the ACPI 6211specification, but there is apparently ASL code in the field that has these 6212_INI methods, and apparently "other" AML interpreters execute them. 6213 6214Performed a full 16/32/64 bit lint that resulted in some small changes. 6215 6216Added a sleep simulation command to the AML debugger to test sleep code. 6217 6218Code and Data Size: Current and previous core subsystem library sizes are 6219shown below. These are the code and data sizes for the acpica.lib produced 6220by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6221any ACPI driver or OSPM code. The debug version of the code includes the 6222debug output trace mechanism and has a much larger code and data size. Note 6223that these values will vary depending on the efficiency of the compiler and 6224the compiler options used during generation. 6225 6226 Previous Release: 6227 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6228 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6229 Current Release: 6230 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6231 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6232 6233---------------------------------------- 623427 April 2004. Summary of changes for version 20040427: 6235 62361) ACPI CA Core Subsystem: 6237 6238Completed a major overhaul of the GPE handling within ACPI CA. There are 6239now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6240The only GPEs allowed to be combination wake/run are for button-style 6241devices such as a control-method power button, control-method sleep button, 6242or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6243referenced by any _PRW methods are marked for "runtime" and hardware 6244enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6245(and disabled at runtime). However, at sleep time, only those GPEs that 6246have been specifically enabled for wake via the AcpiEnableGpe interface will 6247actually be hardware enabled. 6248 6249A new external interface has been added, AcpiSetGpeType(), that is meant to 6250be used by device drivers to force a GPE to a particular type. It will be 6251especially useful for the drivers for the button devices mentioned above. 6252 6253Completed restructuring of the ACPI CA initialization sequence so that 6254default operation region handlers are installed before GPEs are initialized 6255and the _PRW methods are executed. This will prevent errors when the _PRW 6256methods attempt to access system memory or I/O space. 6257 6258GPE enable/disable no longer reads the GPE enable register. We now keep the 6259enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6260thus no longer depend on the hardware to maintain these bits. 6261 6262Always clear the wake status and fixed/GPE status bits before sleep, even 6263for state S5. 6264 6265Improved the AML debugger output for displaying the GPE blocks and their 6266current status. 6267 6268Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6269x = 0,1,2,3,4. 6270 6271Fixed a problem where the physical address was incorrectly calculated when 6272the Load() operator was used to directly load from an Operation Region (vs. 6273loading from a Field object.) Also added check for minimum table length for 6274this case. 6275 6276Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6277mutex release. 6278 6279Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6280consistency with the other fields returned. 6281 6282Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6283structure for each GPE in the system, so the size of this structure is 6284important. 6285 6286CPU stack requirement reduction: Cleaned up the method execution and object 6287evaluation paths so that now a parameter structure is passed, instead of 6288copying the various method parameters over and over again. 6289 6290In evregion.c: Correctly exit and reenter the interpreter region if and 6291only if dispatching an operation region request to a user-installed handler. 6292Do not exit/reenter when dispatching to a default handler (e.g., default 6293system memory or I/O handlers) 6294 6295 6296Notes for updating drivers for the new GPE support. The following changes 6297must be made to ACPI-related device drivers that are attached to one or more 6298GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6299 63001) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6301explicitly call AcpiEnableGpe. 63022) There is a new interface called AcpiSetGpeType. This should be called 6303before enabling the GPE. Also, this interface will automatically disable 6304the GPE if it is currently enabled. 63053) AcpiEnableGpe no longer supports a GPE type flag. 6306 6307Specific drivers that must be changed: 63081) EC driver: 6309 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6310AeGpeHandler, NULL); 6311 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6312 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6313 63142) Button Drivers (Power, Lid, Sleep): 6315Run _PRW method under parent device 6316If _PRW exists: /* This is a control-method button */ 6317 Extract GPE number and possibly GpeDevice 6318 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6319 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6320 6321For all other devices that have _PRWs, we automatically set the GPE type to 6322ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6323must be done on a selective basis, usually requiring some kind of user app 6324to allow the user to pick the wake devices. 6325 6326 6327Code and Data Size: Current and previous core subsystem library sizes are 6328shown below. These are the code and data sizes for the acpica.lib produced 6329by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6330any ACPI driver or OSPM code. The debug version of the code includes the 6331debug output trace mechanism and has a much larger code and data size. Note 6332that these values will vary depending on the efficiency of the compiler and 6333the compiler options used during generation. 6334 6335 Previous Release: 6336 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6337 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6338 Current Release: 6339 6340 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6341 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6342 6343 6344 6345---------------------------------------- 634602 April 2004. Summary of changes for version 20040402: 6347 63481) ACPI CA Core Subsystem: 6349 6350Fixed an interpreter problem where an indirect store through an ArgX 6351parameter was incorrectly applying the "implicit conversion rules" during 6352the store. From the ACPI specification: "If the target is a method local or 6353argument (LocalX or ArgX), no conversion is performed and the result is 6354stored directly to the target". The new behavior is to disable implicit 6355conversion during ALL stores to an ArgX. 6356 6357Changed the behavior of the _PRW method scan to ignore any and all errors 6358returned by a given _PRW. This prevents the scan from aborting from the 6359failure of any single _PRW. 6360 6361Moved the runtime configuration parameters from the global init procedure to 6362static variables in acglobal.h. This will allow the host to override the 6363default values easily. 6364 6365Code and Data Size: Current and previous core subsystem library sizes are 6366shown below. These are the code and data sizes for the acpica.lib produced 6367by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6368any ACPI driver or OSPM code. The debug version of the code includes the 6369debug output trace mechanism and has a much larger code and data size. Note 6370that these values will vary depending on the efficiency of the compiler and 6371the compiler options used during generation. 6372 6373 Previous Release: 6374 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6375 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6376 Current Release: 6377 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6378 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6379 6380 63812) iASL Compiler/Disassembler: 6382 6383iASL now fully disassembles SSDTs. However, External() statements are not 6384generated automatically for unresolved symbols at this time. This is a 6385planned feature for future implementation. 6386 6387Fixed a scoping problem in the disassembler that occurs when the type of the 6388target of a Scope() operator is overridden. This problem caused an 6389incorrectly nested internal namespace to be constructed. 6390 6391Any warnings or errors that are emitted during disassembly are now commented 6392out automatically so that the resulting file can be recompiled without any 6393hand editing. 6394 6395---------------------------------------- 639626 March 2004. Summary of changes for version 20040326: 6397 63981) ACPI CA Core Subsystem: 6399 6400Implemented support for "wake" GPEs via interaction between GPEs and the 6401_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6402identified as a WAKE GPE and by default will no longer be enabled at 6403runtime. Previously, we were blindly enabling all GPEs with a corresponding 6404_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6405believe this has been the cause of thousands of "spurious" GPEs on some 6406systems. 6407 6408This new GPE behavior is can be reverted to the original behavior (enable 6409ALL GPEs at runtime) via a runtime flag. 6410 6411Fixed a problem where aliased control methods could not access objects 6412properly. The proper scope within the namespace was not initialized 6413(transferred to the target of the aliased method) before executing the 6414target method. 6415 6416Fixed a potential race condition on internal object deletion on the return 6417object in AcpiEvaluateObject. 6418 6419Integrated a fix for resource descriptors where both _MEM and _MTP were 6420being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6421wide, 0x0F instead of 0x03.) 6422 6423Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6424fault in some cases. 6425 6426Updated Notify() values for debug statements in evmisc.c 6427 6428Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6429 6430Code and Data Size: Current and previous core subsystem library sizes are 6431shown below. These are the code and data sizes for the acpica.lib produced 6432by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6433any ACPI driver or OSPM code. The debug version of the code includes the 6434debug output trace mechanism and has a much larger code and data size. Note 6435that these values will vary depending on the efficiency of the compiler and 6436the compiler options used during generation. 6437 6438 Previous Release: 6439 6440 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6441 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6442 Current Release: 6443 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6444 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6445 6446---------------------------------------- 644711 March 2004. Summary of changes for version 20040311: 6448 64491) ACPI CA Core Subsystem: 6450 6451Fixed a problem where errors occurring during the parse phase of control 6452method execution did not abort cleanly. For example, objects created and 6453installed in the namespace were not deleted. This caused all subsequent 6454invocations of the method to return the AE_ALREADY_EXISTS exception. 6455 6456Implemented a mechanism to force a control method to "Serialized" execution 6457if the method attempts to create namespace objects. (The root of the 6458AE_ALREADY_EXISTS problem.) 6459 6460Implemented support for the predefined _OSI "internal" control method. 6461Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6462"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6463This feature will allow "other" operating systems to execute the fully 6464tested, "Windows" code path through the ASL code 6465 6466Global Lock Support: Now allows multiple acquires and releases with any 6467internal thread. Removed concept of "owning thread" for this special mutex. 6468 6469Fixed two functions that were inappropriately declaring large objects on the 6470CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6471method execution considerably. 6472 6473Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6474S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6475 6476Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6477defined on the machine. 6478 6479Implemented two runtime options: One to force all control method execution 6480to "Serialized" to mimic Windows behavior, another to disable _OSI support 6481if it causes problems on a given machine. 6482 6483Code and Data Size: Current and previous core subsystem library sizes are 6484shown below. These are the code and data sizes for the acpica.lib produced 6485by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6486any ACPI driver or OSPM code. The debug version of the code includes the 6487debug output trace mechanism and has a much larger code and data size. Note 6488that these values will vary depending on the efficiency of the compiler and 6489the compiler options used during generation. 6490 6491 Previous Release: 6492 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6493 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6494 Current Release: 6495 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6496 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6497 64982) iASL Compiler/Disassembler: 6499 6500Fixed an array size problem for FreeBSD that would cause the compiler to 6501fault. 6502 6503---------------------------------------- 650420 February 2004. Summary of changes for version 20040220: 6505 6506 65071) ACPI CA Core Subsystem: 6508 6509Implemented execution of _SxD methods for Device objects in the 6510GetObjectInfo interface. 6511 6512Fixed calls to _SST method to pass the correct arguments. 6513 6514Added a call to _SST on wake to restore to "working" state. 6515 6516Check for End-Of-Buffer failure case in the WalkResources interface. 6517 6518Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6519structures to the beginning of the file. 6520 6521After wake, clear GPE status register(s) before enabling GPEs. 6522 6523After wake, clear/enable power button. (Perhaps we should clear/enable all 6524fixed events upon wake.) 6525 6526Fixed a couple of possible memory leaks in the Namespace manager. 6527 6528Integrated latest acnetbsd.h file. 6529 6530---------------------------------------- 653111 February 2004. Summary of changes for version 20040211: 6532 6533 65341) ACPI CA Core Subsystem: 6535 6536Completed investigation and implementation of the call-by-reference 6537mechanism for control method arguments. 6538 6539Fixed a problem where a store of an object into an indexed package could 6540fail if the store occurs within a different method than the method that 6541created the package. 6542 6543Fixed a problem where the ToDecimal operator could return incorrect results. 6544 6545Fixed a problem where the CopyObject operator could fail on some of the more 6546obscure objects (e.g., Reference objects.) 6547 6548Improved the output of the Debug object to display buffer, package, and 6549index objects. 6550 6551Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6552the expected result. 6553 6554Added permanent ACPI_REPORT_ERROR macros for all instances of the 6555ACPI_AML_INTERNAL exception. 6556 6557Integrated latest version of acfreebsd.h 6558 6559---------------------------------------- 656016 January 2004. Summary of changes for version 20040116: 6561 6562The purpose of this release is primarily to update the copyright years in 6563each module, thus causing a huge number of diffs. There are a few small 6564functional changes, however. 6565 65661) ACPI CA Core Subsystem: 6567 6568Improved error messages when there is a problem finding one or more of the 6569required base ACPI tables 6570 6571Reintroduced the definition of APIC_HEADER in actbl.h 6572 6573Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6574 6575Removed extraneous reference to NewObj in dsmthdat.c 6576 65772) iASL compiler 6578 6579Fixed a problem introduced in December that disabled the correct disassembly 6580of Resource Templates 6581 6582 6583---------------------------------------- 658403 December 2003. Summary of changes for version 20031203: 6585 65861) ACPI CA Core Subsystem: 6587 6588Changed the initialization of Operation Regions during subsystem 6589init to perform two entire walks of the ACPI namespace; The first 6590to initialize the regions themselves, the second to execute the 6591_REG methods. This fixed some interdependencies across _REG 6592methods found on some machines. 6593 6594Fixed a problem where a Store(Local0, Local1) could simply update 6595the object reference count, and not create a new copy of the 6596object if the Local1 is uninitialized. 6597 6598Implemented support for the _SST reserved method during sleep 6599transitions. 6600 6601Implemented support to clear the SLP_TYP and SLP_EN bits when 6602waking up, this is apparently required by some machines. 6603 6604When sleeping, clear the wake status only if SleepState is not S5. 6605 6606Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6607pointer arithmetic advanced a string pointer too far. 6608 6609Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6610could be returned if the requested table has not been loaded. 6611 6612Within the support for IRQ resources, restructured the handling of 6613the active and edge/level bits. 6614 6615Fixed a few problems in AcpiPsxExecute() where memory could be 6616leaked under certain error conditions. 6617 6618Improved error messages for the cases where the ACPI mode could 6619not be entered. 6620 6621Code and Data Size: Current and previous core subsystem library 6622sizes are shown below. These are the code and data sizes for the 6623acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6624these values do not include any ACPI driver or OSPM code. The 6625debug version of the code includes the debug output trace 6626mechanism and has a much larger code and data size. Note that 6627these values will vary depending on the efficiency of the compiler 6628and the compiler options used during generation. 6629 6630 Previous Release (20031029): 6631 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6632 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6633 Current Release: 6634 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6635 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6636 66372) iASL Compiler/Disassembler: 6638 6639Implemented a fix for the iASL disassembler where a bad index was 6640generated. This was most noticeable on 64-bit platforms 6641 6642 6643---------------------------------------- 664429 October 2003. Summary of changes for version 20031029: 6645 66461) ACPI CA Core Subsystem: 6647 6648 6649Fixed a problem where a level-triggered GPE with an associated 6650_Lxx control method was incorrectly cleared twice. 6651 6652Fixed a problem with the Field support code where an access can 6653occur beyond the end-of-region if the field is non-aligned but 6654extends to the very end of the parent region (resulted in an 6655AE_AML_REGION_LIMIT exception.) 6656 6657Fixed a problem with ACPI Fixed Events where an RT Clock handler 6658would not get invoked on an RTC event. The RTC event bitmasks for 6659the PM1 registers were not being initialized properly. 6660 6661Implemented support for executing _STA and _INI methods for 6662Processor objects. Although this is currently not part of the 6663ACPI specification, there is existing ASL code that depends on the 6664init-time execution of these methods. 6665 6666Implemented and deployed a GetDescriptorName function to decode 6667the various types of internal descriptors. Guards against null 6668descriptors during debug output also. 6669 6670Implemented and deployed a GetNodeName function to extract the 4- 6671character namespace node name. This function simplifies the debug 6672and error output, as well as guarding against null pointers during 6673output. 6674 6675Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6676simplify the debug and error output of 64-bit integers. This 6677macro replaces the HIDWORD and LODWORD macros for dumping these 6678integers. 6679 6680Updated the implementation of the Stall() operator to only call 6681AcpiOsStall(), and also return an error if the operand is larger 6682than 255. This preserves the required behavior of not 6683relinquishing the processor, as would happen if AcpiOsSleep() was 6684called for "long stalls". 6685 6686Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6687initialized are now treated as NOOPs. 6688 6689Cleaned up a handful of warnings during 64-bit generation. 6690 6691Fixed a reported error where and incorrect GPE number was passed 6692to the GPE dispatch handler. This value is only used for error 6693output, however. Used this opportunity to clean up and streamline 6694the GPE dispatch code. 6695 6696Code and Data Size: Current and previous core subsystem library 6697sizes are shown below. These are the code and data sizes for the 6698acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6699these values do not include any ACPI driver or OSPM code. The 6700 6701debug version of the code includes the debug output trace 6702mechanism and has a much larger code and data size. Note that 6703these values will vary depending on the efficiency of the compiler 6704and the compiler options used during generation. 6705 6706 Previous Release (20031002): 6707 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6708 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6709 Current Release: 6710 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6711 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6712 6713 67142) iASL Compiler/Disassembler: 6715 6716Updated the iASL compiler to return an error if the operand to the 6717Stall() operator is larger than 255. 6718 6719 6720---------------------------------------- 672102 October 2003. Summary of changes for version 20031002: 6722 6723 67241) ACPI CA Core Subsystem: 6725 6726Fixed a problem with Index Fields where the index was not 6727incremented for fields that require multiple writes to the 6728index/data registers (Fields that are wider than the data 6729register.) 6730 6731Fixed a problem with all Field objects where a write could go 6732beyond the end-of-field if the field was larger than the access 6733granularity and therefore required multiple writes to complete the 6734request. An extra write beyond the end of the field could happen 6735inadvertently. 6736 6737Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6738would incorrectly be returned if the width of the Data Register 6739was larger than the specified field access width. 6740 6741Completed fixes for LoadTable() and Unload() and verified their 6742operation. Implemented full support for the "DdbHandle" object 6743throughout the ACPI CA subsystem. 6744 6745Implemented full support for the MADT and ECDT tables in the ACPI 6746CA header files. Even though these tables are not directly 6747consumed by ACPI CA, the header definitions are useful for ACPI 6748device drivers. 6749 6750Integrated resource descriptor fixes posted to the Linux ACPI 6751list. This included checks for minimum descriptor length, and 6752support for trailing NULL strings within descriptors that have 6753optional string elements. 6754 6755Code and Data Size: Current and previous core subsystem library 6756sizes are shown below. These are the code and data sizes for the 6757acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6758these values do not include any ACPI driver or OSPM code. The 6759debug version of the code includes the debug output trace 6760mechanism and has a much larger code and data size. Note that 6761these values will vary depending on the efficiency of the compiler 6762and the compiler options used during generation. 6763 6764 Previous Release (20030918): 6765 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6766 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6767 Current Release: 6768 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6769 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6770 6771 67722) iASL Compiler: 6773 6774Implemented detection of non-ASCII characters within the input 6775source ASL file. This catches attempts to compile binary (AML) 6776files early in the compile, with an informative error message. 6777 6778Fixed a problem where the disassembler would fault if the output 6779filename could not be generated or if the output file could not be 6780opened. 6781 6782---------------------------------------- 678318 September 2003. Summary of changes for version 20030918: 6784 6785 67861) ACPI CA Core Subsystem: 6787 6788Found and fixed a longstanding problem with the late execution of 6789the various deferred AML opcodes (such as Operation Regions, 6790Buffer Fields, Buffers, and Packages). If the name string 6791specified for the name of the new object placed the object in a 6792scope other than the current scope, the initialization/execution 6793of the opcode failed. The solution to this problem was to 6794implement a mechanism where the late execution of such opcodes 6795does not attempt to lookup/create the name a second time in an 6796incorrect scope. This fixes the "region size computed 6797incorrectly" problem. 6798 6799Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6800Global Lock AE_BAD_PARAMETER error. 6801 6802Fixed several 64-bit issues with prototypes, casting and data 6803types. 6804 6805Removed duplicate prototype from acdisasm.h 6806 6807Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6808 6809Code and Data Size: Current and previous core subsystem library 6810sizes are shown below. These are the code and data sizes for the 6811acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6812these values do not include any ACPI driver or OSPM code. The 6813debug version of the code includes the debug output trace 6814mechanism and has a much larger code and data size. Note that 6815these values will vary depending on the efficiency of the compiler 6816and the compiler options used during generation. 6817 6818 Previous Release: 6819 6820 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6821 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6822 Current Release: 6823 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6824 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6825 6826 68272) Linux: 6828 6829Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6830correct sleep time in seconds. 6831 6832---------------------------------------- 683314 July 2003. Summary of changes for version 20030619: 6834 68351) ACPI CA Core Subsystem: 6836 6837Parse SSDTs in order discovered, as opposed to reverse order 6838(Hrvoje Habjanic) 6839 6840Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6841Klausner, 6842 Nate Lawson) 6843 6844 68452) Linux: 6846 6847Dynamically allocate SDT list (suggested by Andi Kleen) 6848 6849proc function return value cleanups (Andi Kleen) 6850 6851Correctly handle NMI watchdog during long stalls (Andrew Morton) 6852 6853Make it so acpismp=force works (reported by Andrew Morton) 6854 6855 6856---------------------------------------- 685719 June 2003. Summary of changes for version 20030619: 6858 68591) ACPI CA Core Subsystem: 6860 6861Fix To/FromBCD, eliminating the need for an arch-specific #define. 6862 6863Do not acquire a semaphore in the S5 shutdown path. 6864 6865Fix ex_digits_needed for 0. (Takayoshi Kochi) 6866 6867Fix sleep/stall code reversal. (Andi Kleen) 6868 6869Revert a change having to do with control method calling 6870semantics. 6871 68722) Linux: 6873 6874acpiphp update (Takayoshi Kochi) 6875 6876Export acpi_disabled for sonypi (Stelian Pop) 6877 6878Mention acpismp=force in config help 6879 6880Re-add acpitable.c and acpismp=force. This improves backwards 6881 6882compatibility and also cleans up the code to a significant degree. 6883 6884Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6885 6886---------------------------------------- 688722 May 2003. Summary of changes for version 20030522: 6888 68891) ACPI CA Core Subsystem: 6890 6891Found and fixed a reported problem where an AE_NOT_FOUND error 6892occurred occasionally during _BST evaluation. This turned out to 6893be an Owner ID allocation issue where a called method did not get 6894a new ID assigned to it. Eventually, (after 64k calls), the Owner 6895ID UINT16 would wraparound so that the ID would be the same as the 6896caller's and the called method would delete the caller's 6897namespace. 6898 6899Implemented extended error reporting for control methods that are 6900aborted due to a run-time exception. Output includes the exact 6901AML instruction that caused the method abort, a dump of the method 6902locals and arguments at the time of the abort, and a trace of all 6903nested control method calls. 6904 6905Modified the interpreter to allow the creation of buffers of zero 6906length from the AML code. Implemented new code to ensure that no 6907attempt is made to actually allocate a memory buffer (of length 6908zero) - instead, a simple buffer object with a NULL buffer pointer 6909and length zero is created. A warning is no longer issued when 6910the AML attempts to create a zero-length buffer. 6911 6912Implemented a workaround for the "leading asterisk issue" in 6913_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6914asterisk is automatically removed if present in any HID, UID, or 6915CID strings. The iASL compiler will still flag this asterisk as 6916an error, however. 6917 6918Implemented full support for _CID methods that return a package of 6919multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6920now additionally returns a device _CID list if present. This 6921required a change to the external interface in order to pass an 6922ACPI_BUFFER object as a parameter since the _CID list is of 6923variable length. 6924 6925Fixed a problem with the new AE_SAME_HANDLER exception where 6926handler initialization code did not know about this exception. 6927 6928Code and Data Size: Current and previous core subsystem library 6929sizes are shown below. These are the code and data sizes for the 6930acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6931these values do not include any ACPI driver or OSPM code. The 6932debug version of the code includes the debug output trace 6933mechanism and has a much larger code and data size. Note that 6934these values will vary depending on the efficiency of the compiler 6935and the compiler options used during generation. 6936 6937 Previous Release (20030509): 6938 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6939 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6940 Current Release: 6941 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6942 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6943 6944 69452) Linux: 6946 6947Fixed a bug in which we would reinitialize the ACPI interrupt 6948after it was already working, thus disabling all ACPI and the IRQs 6949for any other device sharing the interrupt. (Thanks to Stian 6950Jordet) 6951 6952Toshiba driver update (John Belmonte) 6953 6954Return only 0 or 1 for our interrupt handler status (Andrew 6955Morton) 6956 6957 69583) iASL Compiler: 6959 6960Fixed a reported problem where multiple (nested) ElseIf() 6961statements were not handled correctly by the compiler, resulting 6962in incorrect warnings and incorrect AML code. This was a problem 6963in both the ASL parser and the code generator. 6964 6965 69664) Documentation: 6967 6968Added changes to existing interfaces, new exception codes, and new 6969text concerning reference count object management versus garbage 6970collection. 6971 6972---------------------------------------- 697309 May 2003. Summary of changes for version 20030509. 6974 6975 69761) ACPI CA Core Subsystem: 6977 6978Changed the subsystem initialization sequence to hold off 6979installation of address space handlers until the hardware has been 6980initialized and the system has entered ACPI mode. This is because 6981the installation of space handlers can cause _REG methods to be 6982run. Previously, the _REG methods could potentially be run before 6983ACPI mode was enabled. 6984 6985Fixed some memory leak issues related to address space handler and 6986notify handler installation. There were some problems with the 6987reference count mechanism caused by the fact that the handler 6988objects are shared across several namespace objects. 6989 6990Fixed a reported problem where reference counts within the 6991namespace were not properly updated when named objects created by 6992method execution were deleted. 6993 6994Fixed a reported problem where multiple SSDTs caused a deletion 6995issue during subsystem termination. Restructured the table data 6996structures to simplify the linked lists and the related code. 6997 6998Fixed a problem where the table ID associated with secondary 6999tables (SSDTs) was not being propagated into the namespace objects 7000created by those tables. This would only present a problem for 7001tables that are unloaded at run-time, however. 7002 7003Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7004type as the length parameter (instead of UINT32). 7005 7006Solved a long-standing problem where an ALREADY_EXISTS error 7007appears on various systems. This problem could happen when there 7008are multiple PCI_Config operation regions under a single PCI root 7009bus. This doesn't happen very frequently, but there are some 7010systems that do this in the ASL. 7011 7012Fixed a reported problem where the internal DeleteNode function 7013was incorrectly handling the case where a namespace node was the 7014first in the parent's child list, and had additional peers (not 7015the only child, but first in the list of children.) 7016 7017Code and Data Size: Current core subsystem library sizes are shown 7018below. These are the code and data sizes for the acpica.lib 7019produced by the Microsoft Visual C++ 6.0 compiler, and these 7020values do not include any ACPI driver or OSPM code. The debug 7021version of the code includes the debug output trace mechanism and 7022has a much larger code and data size. Note that these values will 7023vary depending on the efficiency of the compiler and the compiler 7024options used during generation. 7025 7026 Previous Release 7027 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7028 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7029 Current Release: 7030 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7031 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7032 7033 70342) Linux: 7035 7036Allow ":" in OS override string (Ducrot Bruno) 7037 7038Kobject fix (Greg KH) 7039 7040 70413 iASL Compiler/Disassembler: 7042 7043Fixed a problem in the generation of the C source code files (AML 7044is emitted in C source statements for BIOS inclusion) where the 7045Ascii dump that appears within a C comment at the end of each line 7046could cause a compile time error if the AML sequence happens to 7047have an open comment or close comment sequence embedded. 7048 7049 7050---------------------------------------- 705124 April 2003. Summary of changes for version 20030424. 7052 7053 70541) ACPI CA Core Subsystem: 7055 7056Support for big-endian systems has been implemented. Most of the 7057support has been invisibly added behind big-endian versions of the 7058ACPI_MOVE_* macros. 7059 7060Fixed a problem in AcpiHwDisableGpeBlock() and 7061AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7062low level hardware write routine. The offset parameter was 7063actually eliminated from the low level read/write routines because 7064they had become obsolete. 7065 7066Fixed a problem where a handler object was deleted twice during 7067the removal of a fixed event handler. 7068 7069 70702) Linux: 7071 7072A fix for SMP systems with link devices was contributed by 7073 7074Compaq's Dan Zink. 7075 7076(2.5) Return whether we handled the interrupt in our IRQ handler. 7077(Linux ISRs no longer return void, so we can propagate the handler 7078return value from the ACPI CA core back to the OS.) 7079 7080 7081 70823) Documentation: 7083 7084The ACPI CA Programmer Reference has been updated to reflect new 7085interfaces and changes to existing interfaces. 7086 7087---------------------------------------- 708828 March 2003. Summary of changes for version 20030328. 7089 70901) ACPI CA Core Subsystem: 7091 7092The GPE Block Device support has been completed. New interfaces 7093are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7094interfaces (enable, disable, clear, getstatus) have been split 7095into separate interfaces for Fixed Events and General Purpose 7096Events (GPEs) in order to support GPE Block Devices properly. 7097 7098Fixed a problem where the error message "Failed to acquire 7099semaphore" would appear during operations on the embedded 7100controller (EC). 7101 7102Code and Data Size: Current core subsystem library sizes are shown 7103below. These are the code and data sizes for the acpica.lib 7104produced by the Microsoft Visual C++ 6.0 compiler, and these 7105values do not include any ACPI driver or OSPM code. The debug 7106version of the code includes the debug output trace mechanism and 7107has a much larger code and data size. Note that these values will 7108vary depending on the efficiency of the compiler and the compiler 7109options used during generation. 7110 7111 Previous Release 7112 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7113 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7114 Current Release: 7115 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7116 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7117 7118 7119---------------------------------------- 712028 February 2003. Summary of changes for version 20030228. 7121 7122 71231) ACPI CA Core Subsystem: 7124 7125The GPE handling and dispatch code has been completely overhauled 7126in preparation for support of GPE Block Devices (ID ACPI0006). 7127This affects internal data structures and code only; there should 7128be no differences visible externally. One new file has been 7129added, evgpeblk.c 7130 7131The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7132fields that are used to determine the GPE block lengths. The 7133REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7134structures are ignored. This is per the ACPI specification but it 7135isn't very clear. The full 256 Block 0/1 GPEs are now supported 7136(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7137 7138In the SCI interrupt handler, removed the read of the PM1_CONTROL 7139register to look at the SCI_EN bit. On some machines, this read 7140causes an SMI event and greatly slows down SCI events. (This may 7141in fact be the cause of slow battery status response on some 7142systems.) 7143 7144Fixed a problem where a store of a NULL string to a package object 7145could cause the premature deletion of the object. This was seen 7146during execution of the battery _BIF method on some systems, 7147resulting in no battery data being returned. 7148 7149Added AcpiWalkResources interface to simplify parsing of resource 7150lists. 7151 7152Code and Data Size: Current core subsystem library sizes are shown 7153below. These are the code and data sizes for the acpica.lib 7154produced by the Microsoft Visual C++ 6.0 compiler, and these 7155values do not include any ACPI driver or OSPM code. The debug 7156version of the code includes the debug output trace mechanism and 7157has a much larger code and data size. Note that these values will 7158vary depending on the efficiency of the compiler and the compiler 7159options used during generation. 7160 7161 Previous Release 7162 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7163 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7164 Current Release: 7165 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7166 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7167 7168 71692) Linux 7170 7171S3 fixes (Ole Rohne) 7172 7173Update ACPI PHP driver with to use new acpi_walk_resource API 7174(Bjorn Helgaas) 7175 7176Add S4BIOS support (Pavel Machek) 7177 7178Map in entire table before performing checksum (John Stultz) 7179 7180Expand the mem= cmdline to allow the specification of reserved and 7181ACPI DATA blocks (Pavel Machek) 7182 7183Never use ACPI on VISWS 7184 7185Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7186 7187Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7188causing us to think that some systems support C2 when they really 7189don't. 7190 7191Do not count processor objects for non-present CPUs (Thanks to 7192Dominik Brodowski) 7193 7194 71953) iASL Compiler: 7196 7197Fixed a problem where ASL include files could not be found and 7198opened. 7199 7200Added support for the _PDC reserved name. 7201 7202 7203---------------------------------------- 720422 January 2003. Summary of changes for version 20030122. 7205 7206 72071) ACPI CA Core Subsystem: 7208 7209Added a check for constructs of the form: Store (Local0, Local0) 7210where Local0 is not initialized. Apparently, some BIOS 7211programmers believe that this is a NOOP. Since this store doesn't 7212do anything anyway, the new prototype behavior will ignore this 7213error. This is a case where we can relax the strict checking in 7214the interpreter in the name of compatibility. 7215 7216 72172) Linux 7218 7219The AcpiSrc Source Conversion Utility has been released with the 7220Linux package for the first time. This is the utility that is 7221used to convert the ACPI CA base source code to the Linux version. 7222 7223(Both) Handle P_BLK lengths shorter than 6 more gracefully 7224 7225(Both) Move more headers to include/acpi, and delete an unused 7226header. 7227 7228(Both) Move drivers/acpi/include directory to include/acpi 7229 7230(Both) Boot functions don't use cmdline, so don't pass it around 7231 7232(Both) Remove include of unused header (Adrian Bunk) 7233 7234(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7235the 7236former now also includes the latter, acpiphp.h only needs the one, 7237now. 7238 7239(2.5) Make it possible to select method of bios restoring after S3 7240resume. [=> no more ugly ifdefs] (Pavel Machek) 7241 7242(2.5) Make proc write interfaces work (Pavel Machek) 7243 7244(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7245 7246(2.5) Break out ACPI Perf code into its own module, under cpufreq 7247(Dominik Brodowski) 7248 7249(2.4) S4BIOS support (Ducrot Bruno) 7250 7251(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7252Visinoni) 7253 7254 72553) iASL Compiler: 7256 7257Added support to disassemble SSDT and PSDTs. 7258 7259Implemented support to obtain SSDTs from the Windows registry if 7260available. 7261 7262 7263---------------------------------------- 726409 January 2003. Summary of changes for version 20030109. 7265 72661) ACPI CA Core Subsystem: 7267 7268Changed the behavior of the internal Buffer-to-String conversion 7269function. The current ACPI specification states that the contents 7270of the buffer are "converted to a string of two-character 7271hexadecimal numbers, each separated by a space". Unfortunately, 7272this definition is not backwards compatible with existing ACPI 1.0 7273implementations (although the behavior was not defined in the ACPI 72741.0 specification). The new behavior simply copies data from the 7275buffer to the string until a null character is found or the end of 7276the buffer is reached. The new String object is always null 7277terminated. This problem was seen during the generation of _BIF 7278battery data where incorrect strings were returned for battery 7279type, etc. This will also require an errata to the ACPI 7280specification. 7281 7282Renamed all instances of NATIVE_UINT and NATIVE_INT to 7283ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7284 7285Copyright in all module headers (both Linux and non-Linux) has be 7286updated to 2003. 7287 7288Code and Data Size: Current core subsystem library sizes are shown 7289below. These are the code and data sizes for the acpica.lib 7290produced by the Microsoft Visual C++ 6.0 compiler, and these 7291values do not include any ACPI driver or OSPM code. The debug 7292version of the code includes the debug output trace mechanism and 7293has a much larger code and data size. Note that these values will 7294vary depending on the efficiency of the compiler and the compiler 7295options used during generation. 7296 7297 Previous Release 7298 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7299 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7300 Current Release: 7301 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7302 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7303 7304 73052) Linux 7306 7307Fixed an oops on module insertion/removal (Matthew Tippett) 7308 7309(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7310 7311(2.5) Replace pr_debug (Randy Dunlap) 7312 7313(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7314 7315(Both) Eliminate spawning of thread from timer callback, in favor 7316of schedule_work() 7317 7318(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7319 7320(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7321 7322(Both) Add missing statics to button.c (Pavel Machek) 7323 7324Several changes have been made to the source code translation 7325utility that generates the Linux Code in order to make the code 7326more "Linux-like": 7327 7328All typedefs on structs and unions have been removed in keeping 7329with the Linux coding style. 7330 7331Removed the non-Linux SourceSafe module revision number from each 7332module header. 7333 7334Completed major overhaul of symbols to be lowercased for linux. 7335Doubled the number of symbols that are lowercased. 7336 7337Fixed a problem where identifiers within procedure headers and 7338within quotes were not fully lower cased (they were left with a 7339starting capital.) 7340 7341Some C macros whose only purpose is to allow the generation of 16- 7342bit code are now completely removed in the Linux code, increasing 7343readability and maintainability. 7344 7345---------------------------------------- 7346 734712 December 2002. Summary of changes for version 20021212. 7348 7349 73501) ACPI CA Core Subsystem: 7351 7352Fixed a problem where the creation of a zero-length AML Buffer 7353would cause a fault. 7354 7355Fixed a problem where a Buffer object that pointed to a static AML 7356buffer (in an ACPI table) could inadvertently be deleted, causing 7357memory corruption. 7358 7359Fixed a problem where a user buffer (passed in to the external 7360ACPI CA interfaces) could be overwritten if the buffer was too 7361small to complete the operation, causing memory corruption. 7362 7363Fixed a problem in the Buffer-to-String conversion code where a 7364string of length one was always returned, regardless of the size 7365of the input Buffer object. 7366 7367Removed the NATIVE_CHAR data type across the entire source due to 7368lack of need and lack of consistent use. 7369 7370Code and Data Size: Current core subsystem library sizes are shown 7371below. These are the code and data sizes for the acpica.lib 7372produced by the Microsoft Visual C++ 6.0 compiler, and these 7373values do not include any ACPI driver or OSPM code. The debug 7374version of the code includes the debug output trace mechanism and 7375has a much larger code and data size. Note that these values will 7376vary depending on the efficiency of the compiler and the compiler 7377options used during generation. 7378 7379 Previous Release 7380 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7381 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7382 Current Release: 7383 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7384 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7385 7386 7387---------------------------------------- 738805 December 2002. Summary of changes for version 20021205. 7389 73901) ACPI CA Core Subsystem: 7391 7392Fixed a problem where a store to a String or Buffer object could 7393cause corruption of the DSDT if the object type being stored was 7394the same as the target object type and the length of the object 7395being stored was equal to or smaller than the original (existing) 7396target object. This was seen to cause corruption of battery _BIF 7397buffers if the _BIF method modified the buffer on the fly. 7398 7399Fixed a problem where an internal error was generated if a control 7400method invocation was used in an OperationRegion, Buffer, or 7401Package declaration. This was caused by the deferred parsing of 7402the control method and thus the deferred creation of the internal 7403method object. The solution to this problem was to create the 7404internal method object at the moment the method is encountered in 7405the first pass - so that subsequent references to the method will 7406able to obtain the required parameter count and thus properly 7407parse the method invocation. This problem presented itself as an 7408AE_AML_INTERNAL during the pass 1 parse phase during table load. 7409 7410Fixed a problem where the internal String object copy routine did 7411not always allocate sufficient memory for the target String object 7412and caused memory corruption. This problem was seen to cause 7413"Allocation already present in list!" errors as memory allocation 7414became corrupted. 7415 7416Implemented a new function for the evaluation of namespace objects 7417that allows the specification of the allowable return object 7418types. This simplifies a lot of code that checks for a return 7419object of one or more specific objects returned from the 7420evaluation (such as _STA, etc.) This may become and external 7421function if it would be useful to ACPI-related drivers. 7422 7423Completed another round of prefixing #defines with "ACPI_" for 7424clarity. 7425 7426Completed additional code restructuring to allow more modular 7427linking for iASL compiler and AcpiExec. Several files were split 7428creating new files. New files: nsparse.c dsinit.c evgpe.c 7429 7430Implemented an abort mechanism to terminate an executing control 7431method via the AML debugger. This feature is useful for debugging 7432control methods that depend (wait) for specific hardware 7433responses. 7434 7435Code and Data Size: Current core subsystem library sizes are shown 7436below. These are the code and data sizes for the acpica.lib 7437produced by the Microsoft Visual C++ 6.0 compiler, and these 7438values do not include any ACPI driver or OSPM code. The debug 7439version of the code includes the debug output trace mechanism and 7440has a much larger code and data size. Note that these values will 7441vary depending on the efficiency of the compiler and the compiler 7442options used during generation. 7443 7444 Previous Release 7445 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7446 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7447 Current Release: 7448 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7449 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7450 7451 74522) iASL Compiler/Disassembler 7453 7454Fixed a compiler code generation problem for "Interrupt" Resource 7455Descriptors. If specified in the ASL, the optional "Resource 7456Source Index" and "Resource Source" fields were not inserted into 7457the correct location within the AML resource descriptor, creating 7458an invalid descriptor. 7459 7460Fixed a disassembler problem for "Interrupt" resource descriptors. 7461The optional "Resource Source Index" and "Resource Source" fields 7462were ignored. 7463 7464 7465---------------------------------------- 746622 November 2002. Summary of changes for version 20021122. 7467 7468 74691) ACPI CA Core Subsystem: 7470 7471Fixed a reported problem where an object stored to a Method Local 7472or Arg was not copied to a new object during the store - the 7473object pointer was simply copied to the Local/Arg. This caused 7474all subsequent operations on the Local/Arg to also affect the 7475original source of the store operation. 7476 7477Fixed a problem where a store operation to a Method Local or Arg 7478was not completed properly if the Local/Arg contained a reference 7479(from RefOf) to a named field. The general-purpose store-to- 7480namespace-node code is now used so that this case is handled 7481automatically. 7482 7483Fixed a problem where the internal object copy routine would cause 7484a protection fault if the object being copied was a Package and 7485contained either 1) a NULL package element or 2) a nested sub- 7486package. 7487 7488Fixed a problem with the GPE initialization that resulted from an 7489ambiguity in the ACPI specification. One section of the 7490specification states that both the address and length of the GPE 7491block must be zero if the block is not supported. Another section 7492implies that only the address need be zero if the block is not 7493supported. The code has been changed so that both the address and 7494the length must be non-zero to indicate a valid GPE block (i.e., 7495if either the address or the length is zero, the GPE block is 7496invalid.) 7497 7498Code and Data Size: Current core subsystem library sizes are shown 7499below. These are the code and data sizes for the acpica.lib 7500produced by the Microsoft Visual C++ 6.0 compiler, and these 7501values do not include any ACPI driver or OSPM code. The debug 7502version of the code includes the debug output trace mechanism and 7503has a much larger code and data size. Note that these values will 7504vary depending on the efficiency of the compiler and the compiler 7505options used during generation. 7506 7507 Previous Release 7508 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7509 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7510 Current Release: 7511 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7512 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7513 7514 75152) Linux 7516 7517Cleaned up EC driver. Exported an external EC read/write 7518interface. By going through this, other drivers (most notably 7519sonypi) will be able to serialize access to the EC. 7520 7521 75223) iASL Compiler/Disassembler 7523 7524Implemented support to optionally generate include files for both 7525ASM and C (the -i switch). This simplifies BIOS development by 7526automatically creating include files that contain external 7527declarations for the symbols that are created within the 7528 7529(optionally generated) ASM and C AML source files. 7530 7531 7532---------------------------------------- 753315 November 2002. Summary of changes for version 20021115. 7534 75351) ACPI CA Core Subsystem: 7536 7537Fixed a memory leak problem where an error during resolution of 7538 7539method arguments during a method invocation from another method 7540failed to cleanup properly by deleting all successfully resolved 7541argument objects. 7542 7543Fixed a problem where the target of the Index() operator was not 7544correctly constructed if the source object was a package. This 7545problem has not been detected because the use of a target operand 7546with Index() is very rare. 7547 7548Fixed a problem with the Index() operator where an attempt was 7549made to delete the operand objects twice. 7550 7551Fixed a problem where an attempt was made to delete an operand 7552twice during execution of the CondRefOf() operator if the target 7553did not exist. 7554 7555Implemented the first of perhaps several internal create object 7556functions that create and initialize a specific object type. This 7557consolidates duplicated code wherever the object is created, thus 7558shrinking the size of the subsystem. 7559 7560Implemented improved debug/error messages for errors that occur 7561during nested method invocations. All executing method pathnames 7562are displayed (with the error) as the call stack is unwound - thus 7563simplifying debug. 7564 7565Fixed a problem introduced in the 10/02 release that caused 7566premature deletion of a buffer object if a buffer was used as an 7567ASL operand where an integer operand is required (Thus causing an 7568implicit object conversion from Buffer to Integer.) The change in 7569the 10/02 release was attempting to fix a memory leak (albeit 7570incorrectly.) 7571 7572Code and Data Size: Current core subsystem library sizes are shown 7573below. These are the code and data sizes for the acpica.lib 7574produced by the Microsoft Visual C++ 6.0 compiler, and these 7575values do not include any ACPI driver or OSPM code. The debug 7576version of the code includes the debug output trace mechanism and 7577has a much larger code and data size. Note that these values will 7578vary depending on the efficiency of the compiler and the compiler 7579options used during generation. 7580 7581 Previous Release 7582 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7583 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7584 Current Release: 7585 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7586 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7587 7588 75892) Linux 7590 7591Changed the implementation of the ACPI semaphores to use down() 7592instead of down_interruptable(). It is important that the 7593execution of ACPI control methods not be interrupted by signals. 7594Methods must run to completion, or the system may be left in an 7595unknown/unstable state. 7596 7597Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7598(Shawn Starr) 7599 7600 76013) iASL Compiler/Disassembler 7602 7603 7604Changed the default location of output files. All output files 7605are now placed in the current directory by default instead of in 7606the directory of the source file. This change may affect some 7607existing makefiles, but it brings the behavior of the compiler in 7608line with other similar tools. The location of the output files 7609can be overridden with the -p command line switch. 7610 7611 7612---------------------------------------- 761311 November 2002. Summary of changes for version 20021111. 7614 7615 76160) ACPI Specification 2.0B is released and is now available at: 7617http://www.acpi.info/index.html 7618 7619 76201) ACPI CA Core Subsystem: 7621 7622Implemented support for the ACPI 2.0 SMBus Operation Regions. 7623This includes the early detection and handoff of the request to 7624the SMBus region handler (avoiding all of the complex field 7625support code), and support for the bidirectional return packet 7626from an SMBus write operation. This paves the way for the 7627development of SMBus drivers in each host operating system. 7628 7629Fixed a problem where the semaphore WAIT_FOREVER constant was 7630defined as 32 bits, but must be 16 bits according to the ACPI 7631specification. This had the side effect of causing ASL 7632Mutex/Event timeouts even though the ASL code requested a wait 7633forever. Changed all internal references to the ACPI timeout 7634parameter to 16 bits to prevent future problems. Changed the name 7635of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7636 7637Code and Data Size: Current core subsystem library sizes are shown 7638below. These are the code and data sizes for the acpica.lib 7639produced by the Microsoft Visual C++ 6.0 compiler, and these 7640values do not include any ACPI driver or OSPM code. The debug 7641version of the code includes the debug output trace mechanism and 7642has a much larger code and data size. Note that these values will 7643vary depending on the efficiency of the compiler and the compiler 7644options used during generation. 7645 7646 Previous Release 7647 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7648 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7649 Current Release: 7650 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7651 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7652 7653 76542) Linux 7655 7656Module loading/unloading fixes (John Cagle) 7657 7658 76593) iASL Compiler/Disassembler 7660 7661Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7662 7663Implemented support for the disassembly of all SMBus protocol 7664keywords (SMBQuick, SMBWord, etc.) 7665 7666---------------------------------------- 766701 November 2002. Summary of changes for version 20021101. 7668 7669 76701) ACPI CA Core Subsystem: 7671 7672Fixed a problem where platforms that have a GPE1 block but no GPE0 7673block were not handled correctly. This resulted in a "GPE 7674overlap" error message. GPE0 is no longer required. 7675 7676Removed code added in the previous release that inserted nodes 7677into the namespace in alphabetical order. This caused some side- 7678effects on various machines. The root cause of the problem is 7679still under investigation since in theory, the internal ordering 7680of the namespace nodes should not matter. 7681 7682 7683Enhanced error reporting for the case where a named object is not 7684found during control method execution. The full ACPI namepath 7685(name reference) of the object that was not found is displayed in 7686this case. 7687 7688Note: as a result of the overhaul of the namespace object types in 7689the previous release, the namespace nodes for the predefined 7690scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7691instead of ACPI_TYPE_ANY. This simplifies the namespace 7692management code but may affect code that walks the namespace tree 7693looking for specific object types. 7694 7695Code and Data Size: Current core subsystem library sizes are shown 7696below. These are the code and data sizes for the acpica.lib 7697produced by the Microsoft Visual C++ 6.0 compiler, and these 7698values do not include any ACPI driver or OSPM code. The debug 7699version of the code includes the debug output trace mechanism and 7700has a much larger code and data size. Note that these values will 7701vary depending on the efficiency of the compiler and the compiler 7702options used during generation. 7703 7704 Previous Release 7705 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7706 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7707 Current Release: 7708 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7709 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7710 7711 77122) Linux 7713 7714Fixed a problem introduced in the previous release where the 7715Processor and Thermal objects were not recognized and installed in 7716/proc. This was related to the scope type change described above. 7717 7718 77193) iASL Compiler/Disassembler 7720 7721Implemented the -g option to get all of the required ACPI tables 7722from the registry and save them to files (Windows version of the 7723compiler only.) The required tables are the FADT, FACS, and DSDT. 7724 7725Added ACPI table checksum validation during table disassembly in 7726order to catch corrupted tables. 7727 7728 7729---------------------------------------- 773022 October 2002. Summary of changes for version 20021022. 7731 77321) ACPI CA Core Subsystem: 7733 7734Implemented a restriction on the Scope operator that the target 7735must already exist in the namespace at the time the operator is 7736encountered (during table load or method execution). In other 7737words, forward references are not allowed and Scope() cannot 7738create a new object. This changes the previous behavior where the 7739interpreter would create the name if not found. This new behavior 7740correctly enables the search-to-root algorithm during namespace 7741lookup of the target name. Because of this upsearch, this fixes 7742the known Compaq _SB_.OKEC problem and makes both the AML 7743interpreter and iASL compiler compatible with other ACPI 7744implementations. 7745 7746Completed a major overhaul of the internal ACPI object types for 7747the ACPI Namespace and the associated operand objects. Many of 7748these types had become obsolete with the introduction of the two- 7749pass namespace load. This cleanup simplifies the code and makes 7750the entire namespace load mechanism much clearer and easier to 7751understand. 7752 7753Improved debug output for tracking scope opening/closing to help 7754diagnose scoping issues. The old scope name as well as the new 7755scope name are displayed. Also improved error messages for 7756problems with ASL Mutex objects and error messages for GPE 7757problems. 7758 7759Cleaned up the namespace dump code, removed obsolete code. 7760 7761All string output (for all namespace/object dumps) now uses the 7762common ACPI string output procedure which handles escapes properly 7763and does not emit non-printable characters. 7764 7765Fixed some issues with constants in the 64-bit version of the 7766local C library (utclib.c) 7767 7768 77692) Linux 7770 7771EC Driver: No longer attempts to acquire the Global Lock at 7772interrupt level. 7773 7774 77753) iASL Compiler/Disassembler 7776 7777Implemented ACPI 2.0B grammar change that disallows all Type 1 and 77782 opcodes outside of a control method. This means that the 7779"executable" operators (versus the "namespace" operators) cannot 7780be used at the table level; they can only be used within a control 7781method. 7782 7783Implemented the restriction on the Scope() operator where the 7784target must already exist in the namespace at the time the 7785operator is encountered (during ASL compilation). In other words, 7786forward references are not allowed and Scope() cannot create a new 7787object. This makes the iASL compiler compatible with other ACPI 7788implementations and makes the Scope() implementation adhere to the 7789ACPI specification. 7790 7791Fixed a problem where namepath optimization for the Alias operator 7792was optimizing the wrong path (of the two namepaths.) This caused 7793a "Missing alias link" error message. 7794 7795Fixed a problem where an "unknown reserved name" warning could be 7796incorrectly generated for names like "_SB" when the trailing 7797underscore is not used in the original ASL. 7798 7799Fixed a problem where the reserved name check did not handle 7800NamePaths with multiple NameSegs correctly. The first nameseg of 7801the NamePath was examined instead of the last NameSeg. 7802 7803 7804---------------------------------------- 7805 780602 October 2002. Summary of changes for this release. 7807 7808 78091) ACPI CA Core Subsystem version 20021002: 7810 7811Fixed a problem where a store/copy of a string to an existing 7812string did not always set the string length properly in the String 7813object. 7814 7815Fixed a reported problem with the ToString operator where the 7816behavior was identical to the ToHexString operator instead of just 7817simply converting a raw buffer to a string data type. 7818 7819Fixed a problem where CopyObject and the other "explicit" 7820conversion operators were not updating the internal namespace node 7821type as part of the store operation. 7822 7823Fixed a memory leak during implicit source operand conversion 7824where the original object was not deleted if it was converted to a 7825new object of a different type. 7826 7827Enhanced error messages for all problems associated with namespace 7828lookups. Common procedure generates and prints the lookup name as 7829well as the formatted status. 7830 7831Completed implementation of a new design for the Alias support 7832within the namespace. The existing design did not handle the case 7833where a new object was assigned to one of the two names due to the 7834use of an explicit conversion operator, resulting in the two names 7835pointing to two different objects. The new design simply points 7836the Alias name to the original name node - not to the object. 7837This results in a level of indirection that must be handled in the 7838name resolution mechanism. 7839 7840Code and Data Size: Current core subsystem library sizes are shown 7841below. These are the code and data sizes for the acpica.lib 7842produced by the Microsoft Visual C++ 6.0 compiler, and these 7843values do not include any ACPI driver or OSPM code. The debug 7844version of the code includes the debug output trace mechanism and 7845has a larger code and data size. Note that these values will vary 7846depending on the efficiency of the compiler and the compiler 7847options used during generation. 7848 7849 Previous Release 7850 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7851 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7852 Current Release: 7853 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7854 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7855 7856 78572) Linux 7858 7859Initialize thermal driver's timer before it is used. (Knut 7860Neumann) 7861 7862Allow handling negative celsius values. (Kochi Takayoshi) 7863 7864Fix thermal management and make trip points. R/W (Pavel Machek) 7865 7866Fix /proc/acpi/sleep. (P. Christeas) 7867 7868IA64 fixes. (David Mosberger) 7869 7870Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7871 7872Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7873Brodowski) 7874 7875 78763) iASL Compiler/Disassembler 7877 7878Clarified some warning/error messages. 7879 7880 7881---------------------------------------- 788218 September 2002. Summary of changes for this release. 7883 7884 78851) ACPI CA Core Subsystem version 20020918: 7886 7887Fixed a reported problem with reference chaining (via the Index() 7888and RefOf() operators) in the ObjectType() and SizeOf() operators. 7889The definition of these operators includes the dereferencing of 7890all chained references to return information on the base object. 7891 7892Fixed a problem with stores to indexed package elements - the 7893existing code would not complete the store if an "implicit 7894conversion" was not performed. In other words, if the existing 7895object (package element) was to be replaced completely, the code 7896didn't handle this case. 7897 7898Relaxed typechecking on the ASL "Scope" operator to allow the 7899target name to refer to an object of type Integer, String, or 7900Buffer, in addition to the scoping object types (Device, 7901predefined Scopes, Processor, PowerResource, and ThermalZone.) 7902This allows existing AML code that has workarounds for a bug in 7903Windows to function properly. A warning is issued, however. This 7904affects both the AML interpreter and the iASL compiler. Below is 7905an example of this type of ASL code: 7906 7907 Name(DEB,0x00) 7908 Scope(DEB) 7909 { 7910 7911Fixed some reported problems with 64-bit integer support in the 7912local implementation of C library functions (clib.c) 7913 7914 79152) Linux 7916 7917Use ACPI fix map region instead of IOAPIC region, since it is 7918undefined in non-SMP. 7919 7920Ensure that the SCI has the proper polarity and trigger, even on 7921systems that do not have an interrupt override entry in the MADT. 7922 79232.5 big driver reorganization (Pat Mochel) 7924 7925Use early table mapping code from acpitable.c (Andi Kleen) 7926 7927New blacklist entries (Andi Kleen) 7928 7929Blacklist improvements. Split blacklist code out into a separate 7930file. Move checking the blacklist to very early. Previously, we 7931would use ACPI tables, and then halfway through init, check the 7932blacklist -- too late. Now, it's early enough to completely fall- 7933back to non-ACPI. 7934 7935 79363) iASL Compiler/Disassembler version 20020918: 7937 7938Fixed a problem where the typechecking code didn't know that an 7939alias could point to a method. In other words, aliases were not 7940being dereferenced during typechecking. 7941 7942 7943---------------------------------------- 794429 August 2002. Summary of changes for this release. 7945 79461) ACPI CA Core Subsystem Version 20020829: 7947 7948If the target of a Scope() operator already exists, it must be an 7949object type that actually opens a scope -- such as a Device, 7950Method, Scope, etc. This is a fatal runtime error. Similar error 7951check has been added to the iASL compiler also. 7952 7953Tightened up the namespace load to disallow multiple names in the 7954same scope. This previously was allowed if both objects were of 7955the same type. (i.e., a lookup was the same as entering a new 7956name). 7957 7958 79592) Linux 7960 7961Ensure that the ACPI interrupt has the proper trigger and 7962polarity. 7963 7964local_irq_disable is extraneous. (Matthew Wilcox) 7965 7966Make "acpi=off" actually do what it says, and not use the ACPI 7967interpreter *or* the tables. 7968 7969Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7970Takayoshi) 7971 7972 79733) iASL Compiler/Disassembler Version 20020829: 7974 7975Implemented namepath optimization for name declarations. For 7976example, a declaration like "Method (\_SB_.ABCD)" would get 7977optimized to "Method (ABCD)" if the declaration is within the 7978\_SB_ scope. This optimization is in addition to the named 7979reference path optimization first released in the previous 7980version. This would seem to complete all possible optimizations 7981for namepaths within the ASL/AML. 7982 7983If the target of a Scope() operator already exists, it must be an 7984object type that actually opens a scope -- such as a Device, 7985Method, Scope, etc. 7986 7987Implemented a check and warning for unreachable code in the same 7988block below a Return() statement. 7989 7990Fixed a problem where the listing file was not generated if the 7991compiler aborted if the maximum error count was exceeded (200). 7992 7993Fixed a problem where the typechecking of method return values was 7994broken. This includes the check for a return value when the 7995method is invoked as a TermArg (a return value is expected.) 7996 7997Fixed a reported problem where EOF conditions during a quoted 7998string or comment caused a fault. 7999 8000 8001---------------------------------------- 800215 August 2002. Summary of changes for this release. 8003 80041) ACPI CA Core Subsystem Version 20020815: 8005 8006Fixed a reported problem where a Store to a method argument that 8007contains a reference did not perform the indirect store correctly. 8008This problem was created during the conversion to the new 8009reference object model - the indirect store to a method argument 8010code was not updated to reflect the new model. 8011 8012Reworked the ACPI mode change code to better conform to ACPI 2.0, 8013handle corner cases, and improve code legibility (Kochi Takayoshi) 8014 8015Fixed a problem with the pathname parsing for the carat (^) 8016prefix. The heavy use of the carat operator by the new namepath 8017optimization in the iASL compiler uncovered a problem with the AML 8018interpreter handling of this prefix. In the case where one or 8019more carats precede a single nameseg, the nameseg was treated as 8020standalone and the search rule (to root) was inadvertently 8021applied. This could cause both the iASL compiler and the 8022interpreter to find the wrong object or to miss the error that 8023should occur if the object does not exist at that exact pathname. 8024 8025Found and fixed the problem where the HP Pavilion DSDT would not 8026load. This was a relatively minor tweak to the table loading code 8027(a problem caused by the unexpected encounter with a method 8028invocation not within a control method), but it does not solve the 8029overall issue of the execution of AML code at the table level. 8030This investigation is still ongoing. 8031 8032Code and Data Size: Current core subsystem library sizes are shown 8033below. These are the code and data sizes for the acpica.lib 8034produced by the Microsoft Visual C++ 6.0 compiler, and these 8035values do not include any ACPI driver or OSPM code. The debug 8036version of the code includes the debug output trace mechanism and 8037has a larger code and data size. Note that these values will vary 8038depending on the efficiency of the compiler and the compiler 8039options used during generation. 8040 8041 Previous Release 8042 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8043 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8044 Current Release: 8045 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8046 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8047 8048 80492) Linux 8050 8051Remove redundant slab.h include (Brad Hards) 8052 8053Fix several bugs in thermal.c (Herbert Nachtnebel) 8054 8055Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8056 8057Change acpi_system_suspend to use updated irq functions (Pavel 8058Machek) 8059 8060Export acpi_get_firmware_table (Matthew Wilcox) 8061 8062Use proper root proc entry for ACPI (Kochi Takayoshi) 8063 8064Fix early-boot table parsing (Bjorn Helgaas) 8065 8066 80673) iASL Compiler/Disassembler 8068 8069Reworked the compiler options to make them more consistent and to 8070use two-letter options where appropriate. We were running out of 8071sensible letters. This may break some makefiles, so check the 8072current options list by invoking the compiler with no parameters. 8073 8074Completed the design and implementation of the ASL namepath 8075optimization option for the compiler. This option optimizes all 8076references to named objects to the shortest possible path. The 8077first attempt tries to utilize a single nameseg (4 characters) and 8078the "search-to-root" algorithm used by the interpreter. If that 8079cannot be used (because either the name is not in the search path 8080or there is a conflict with another object with the same name), 8081the pathname is optimized using the carat prefix (usually a 8082shorter string than specifying the entire path from the root.) 8083 8084Implemented support to obtain the DSDT from the Windows registry 8085(when the disassembly option is specified with no input file). 8086Added this code as the implementation for AcpiOsTableOverride in 8087the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8088utility) to scan memory for the DSDT to the AcpiOsTableOverride 8089function in the DOS OSL to make the disassembler truly OS 8090independent. 8091 8092Implemented a new option to disassemble and compile in one step. 8093When used without an input filename, this option will grab the 8094DSDT from the local machine, disassemble it, and compile it in one 8095step. 8096 8097Added a warning message for invalid escapes (a backslash followed 8098by any character other than the allowable escapes). This catches 8099the quoted string error "\_SB_" (which should be "\\_SB_" ). 8100 8101Also, there are numerous instances in the ACPI specification where 8102this error occurs. 8103 8104Added a compiler option to disable all optimizations. This is 8105basically the "compatibility mode" because by using this option, 8106the AML code will come out exactly the same as other ASL 8107compilers. 8108 8109Added error messages for incorrectly ordered dependent resource 8110functions. This includes: missing EndDependentFn macro at end of 8111dependent resource list, nested dependent function macros (both 8112start and end), and missing StartDependentFn macro. These are 8113common errors that should be caught at compile time. 8114 8115Implemented _OSI support for the disassembler and compiler. _OSI 8116must be included in the namespace for proper disassembly (because 8117the disassembler must know the number of arguments.) 8118 8119Added an "optimization" message type that is optional (off by 8120default). This message is used for all optimizations - including 8121constant folding, integer optimization, and namepath optimization. 8122 8123---------------------------------------- 812425 July 2002. Summary of changes for this release. 8125 8126 81271) ACPI CA Core Subsystem Version 20020725: 8128 8129The AML Disassembler has been enhanced to produce compilable ASL 8130code and has been integrated into the iASL compiler (see below) as 8131well as the single-step disassembly for the AML debugger and the 8132disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8133resource templates and macros are fully supported. The 8134disassembler has been tested on over 30 different AML files, 8135producing identical AML when the resulting disassembled ASL file 8136is recompiled with the same ASL compiler. 8137 8138Modified the Resource Manager to allow zero interrupts and zero 8139dma channels during the GetCurrentResources call. This was 8140causing problems on some platforms. 8141 8142Added the AcpiOsRedirectOutput interface to the OSL to simplify 8143output redirection for the AcpiOsPrintf and AcpiOsVprintf 8144interfaces. 8145 8146Code and Data Size: Current core subsystem library sizes are shown 8147below. These are the code and data sizes for the acpica.lib 8148produced by the Microsoft Visual C++ 6.0 compiler, and these 8149values do not include any ACPI driver or OSPM code. The debug 8150version of the code includes the debug output trace mechanism and 8151has a larger code and data size. Note that these values will vary 8152depending on the efficiency of the compiler and the compiler 8153options used during generation. 8154 8155 Previous Release 8156 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8157 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8158 Current Release: 8159 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8160 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8161 8162 81632) Linux 8164 8165Fixed a panic in the EC driver (Dominik Brodowski) 8166 8167Implemented checksum of the R/XSDT itself during Linux table scan 8168(Richard Schaal) 8169 8170 81713) iASL compiler 8172 8173The AML disassembler is integrated into the compiler. The "-d" 8174option invokes the disassembler to completely disassemble an 8175input AML file, producing as output a text ASL file with the 8176extension ".dsl" (to avoid name collisions with existing .asl 8177source files.) A future enhancement will allow the disassembler 8178to obtain the BIOS DSDT from the registry under Windows. 8179 8180Fixed a problem with the VendorShort and VendorLong resource 8181descriptors where an invalid AML sequence was created. 8182 8183Implemented a fix for BufferData term in the ASL parser. It was 8184inadvertently defined twice, allowing invalid syntax to pass and 8185causing reduction conflicts. 8186 8187Fixed a problem where the Ones opcode could get converted to a 8188value of zero if "Ones" was used where a byte, word or dword value 8189was expected. The 64-bit value is now truncated to the correct 8190size with the correct value. 8191 8192 8193 8194---------------------------------------- 819502 July 2002. Summary of changes for this release. 8196 8197 81981) ACPI CA Core Subsystem Version 20020702: 8199 8200The Table Manager code has been restructured to add several new 8201features. Tables that are not required by the core subsystem 8202(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8203validated in any way and are returned from AcpiGetFirmwareTable if 8204requested. The AcpiOsTableOverride interface is now called for 8205each table that is loaded by the subsystem in order to allow the 8206host to override any table it chooses. Previously, only the DSDT 8207could be overridden. Added one new files, tbrsdt.c and 8208tbgetall.c. 8209 8210Fixed a problem with the conversion of internal package objects to 8211external objects (when a package is returned from a control 8212method.) The return buffer length was set to zero instead of the 8213proper length of the package object. 8214 8215Fixed a reported problem with the use of the RefOf and DeRefOf 8216operators when passing reference arguments to control methods. A 8217new type of Reference object is used internally for references 8218produced by the RefOf operator. 8219 8220Added additional error messages in the Resource Manager to explain 8221AE_BAD_DATA errors when they occur during resource parsing. 8222 8223Split the AcpiEnableSubsystem into two primitives to enable a 8224finer granularity initialization sequence. These two calls should 8225be called in this order: AcpiEnableSubsystem (flags), 8226AcpiInitializeObjects (flags). The flags parameter remains the 8227same. 8228 8229 82302) Linux 8231 8232Updated the ACPI utilities module to understand the new style of 8233fully resolved package objects that are now returned from the core 8234subsystem. This eliminates errors of the form: 8235 8236 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8237 acpi_utils-0430 [145] acpi_evaluate_reference: 8238 Invalid element in package (not a device reference) 8239 8240The method evaluation utility uses the new buffer allocation 8241scheme instead of calling AcpiEvaluate Object twice. 8242 8243Added support for ECDT. This allows the use of the Embedded 8244 8245Controller before the namespace has been fully initialized, which 8246is necessary for ACPI 2.0 support, and for some laptops to 8247initialize properly. (Laptops using ECDT are still rare, so only 8248limited testing was performed of the added functionality.) 8249 8250Fixed memory leaks in the EC driver. 8251 8252Eliminated a brittle code structure in acpi_bus_init(). 8253 8254Eliminated the acpi_evaluate() helper function in utils.c. It is 8255no longer needed since acpi_evaluate_object can optionally 8256allocate memory for the return object. 8257 8258Implemented fix for keyboard hang when getting battery readings on 8259some systems (Stephen White) 8260 8261PCI IRQ routing update (Dominik Brodowski) 8262 8263Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8264support 8265 8266---------------------------------------- 826711 June 2002. Summary of changes for this release. 8268 8269 82701) ACPI CA Core Subsystem Version 20020611: 8271 8272Fixed a reported problem where constants such as Zero and One 8273appearing within _PRT packages were not handled correctly within 8274the resource manager code. Originally reported against the ASL 8275compiler because the code generator now optimizes integers to 8276their minimal AML representation (i.e. AML constants if possible.) 8277The _PRT code now handles all AML constant opcodes correctly 8278(Zero, One, Ones, Revision). 8279 8280Fixed a problem with the Concatenate operator in the AML 8281interpreter where a buffer result object was incorrectly marked as 8282not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8283 8284All package sub-objects are now fully resolved before they are 8285returned from the external ACPI interfaces. This means that name 8286strings are resolved to object handles, and constant operators 8287(Zero, One, Ones, Revision) are resolved to Integers. 8288 8289Implemented immediate resolution of the AML Constant opcodes 8290(Zero, One, Ones, Revision) to Integer objects upon detection 8291within the AML stream. This has simplified and reduced the 8292generated code size of the subsystem by eliminating about 10 8293switch statements for these constants (which previously were 8294contained in Reference objects.) The complicating issues are that 8295the Zero opcode is used as a "placeholder" for unspecified 8296optional target operands and stores to constants are defined to be 8297no-ops. 8298 8299Code and Data Size: Current core subsystem library sizes are shown 8300below. These are the code and data sizes for the acpica.lib 8301produced by the Microsoft Visual C++ 6.0 compiler, and these 8302values do not include any ACPI driver or OSPM code. The debug 8303version of the code includes the debug output trace mechanism and 8304has a larger code and data size. Note that these values will vary 8305depending on the efficiency of the compiler and the compiler 8306options used during generation. 8307 8308 Previous Release 8309 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8310 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8311 Current Release: 8312 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8313 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8314 8315 83162) Linux 8317 8318 8319Added preliminary support for obtaining _TRA data for PCI root 8320bridges (Bjorn Helgaas). 8321 8322 83233) iASL Compiler Version X2046: 8324 8325Fixed a problem where the "_DDN" reserved name was defined to be a 8326control method with one argument. There are no arguments, and 8327_DDN does not have to be a control method. 8328 8329Fixed a problem with the Linux version of the compiler where the 8330source lines printed with error messages were the wrong lines. 8331This turned out to be the "LF versus CR/LF" difference between 8332Windows and Unix. This appears to be the longstanding issue 8333concerning listing output and error messages. 8334 8335Fixed a problem with the Linux version of compiler where opcode 8336names within error messages were wrong. This was caused by a 8337slight difference in the output of the Flex tool on Linux versus 8338Windows. 8339 8340Fixed a problem with the Linux compiler where the hex output files 8341contained some garbage data caused by an internal buffer overrun. 8342 8343 8344---------------------------------------- 834517 May 2002. Summary of changes for this release. 8346 8347 83481) ACPI CA Core Subsystem Version 20020517: 8349 8350Implemented a workaround to an BIOS bug discovered on the HP 8351OmniBook where the FADT revision number and the table size are 8352inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8353behavior is to fallback to using only the ACPI 1.0 fields of the 8354FADT if the table is too small to be a ACPI 2.0 table as claimed 8355by the revision number. Although this is a BIOS bug, this is a 8356case where the workaround is simple enough and with no side 8357effects, so it seemed prudent to add it. A warning message is 8358issued, however. 8359 8360Implemented minimum size checks for the fixed-length ACPI tables - 8361- the FADT and FACS, as well as consistency checks between the 8362revision number and the table size. 8363 8364Fixed a reported problem in the table override support where the 8365new table pointer was incorrectly treated as a physical address 8366instead of a logical address. 8367 8368Eliminated the use of the AE_AML_ERROR exception and replaced it 8369with more descriptive codes. 8370 8371Fixed a problem where an exception would occur if an ASL Field was 8372defined with no named Field Units underneath it (used by some 8373index fields). 8374 8375Code and Data Size: Current core subsystem library sizes are shown 8376below. These are the code and data sizes for the acpica.lib 8377produced by the Microsoft Visual C++ 6.0 compiler, and these 8378values do not include any ACPI driver or OSPM code. The debug 8379version of the code includes the debug output trace mechanism and 8380has a larger code and data size. Note that these values will vary 8381depending on the efficiency of the compiler and the compiler 8382options used during generation. 8383 8384 Previous Release 8385 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8386 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8387 Current Release: 8388 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8389 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8390 8391 8392 83932) Linux 8394 8395Much work done on ACPI init (MADT and PCI IRQ routing support). 8396(Paul D. and Dominik Brodowski) 8397 8398Fix PCI IRQ-related panic on boot (Sam Revitch) 8399 8400Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8401 8402Fix "MHz" typo (Dominik Brodowski) 8403 8404Fix RTC year 2000 issue (Dominik Brodowski) 8405 8406Preclude multiple button proc entries (Eric Brunet) 8407 8408Moved arch-specific code out of include/platform/aclinux.h 8409 84103) iASL Compiler Version X2044: 8411 8412Implemented error checking for the string used in the EISAID macro 8413(Usually used in the definition of the _HID object.) The code now 8414strictly enforces the PnP format - exactly 7 characters, 3 8415uppercase letters and 4 hex digits. 8416 8417If a raw string is used in the definition of the _HID object 8418(instead of the EISAID macro), the string must contain all 8419alphanumeric characters (e.g., "*PNP0011" is not allowed because 8420of the asterisk.) 8421 8422Implemented checking for invalid use of ACPI reserved names for 8423most of the name creation operators (Name, Device, Event, Mutex, 8424OperationRegion, PowerResource, Processor, and ThermalZone.) 8425Previously, this check was only performed for control methods. 8426 8427Implemented an additional check on the Name operator to emit an 8428error if a reserved name that must be implemented in ASL as a 8429control method is used. We know that a reserved name must be a 8430method if it is defined with input arguments. 8431 8432The warning emitted when a namespace object reference is not found 8433during the cross reference phase has been changed into an error. 8434The "External" directive should be used for names defined in other 8435modules. 8436 8437 84384) Tools and Utilities 8439 8440The 16-bit tools (adump16 and aexec16) have been regenerated and 8441tested. 8442 8443Fixed a problem with the output of both acpidump and adump16 where 8444the indentation of closing parentheses and brackets was not 8445 8446aligned properly with the parent block. 8447 8448 8449---------------------------------------- 845003 May 2002. Summary of changes for this release. 8451 8452 84531) ACPI CA Core Subsystem Version 20020503: 8454 8455Added support a new OSL interface that allows the host operating 8456 8457system software to override the DSDT found in the firmware - 8458AcpiOsTableOverride. With this interface, the OSL can examine the 8459version of the firmware DSDT and replace it with a different one 8460if desired. 8461 8462Added new external interfaces for accessing ACPI registers from 8463device drivers and other system software - AcpiGetRegister and 8464AcpiSetRegister. This was simply an externalization of the 8465existing AcpiHwBitRegister interfaces. 8466 8467Fixed a regression introduced in the previous build where the 8468ASL/AML CreateField operator always returned an error, 8469"destination must be a NS Node". 8470 8471Extended the maximum time (before failure) to successfully enable 8472ACPI mode to 3 seconds. 8473 8474Code and Data Size: Current core subsystem library sizes are shown 8475below. These are the code and data sizes for the acpica.lib 8476produced by the Microsoft Visual C++ 6.0 compiler, and these 8477values do not include any ACPI driver or OSPM code. The debug 8478version of the code includes the debug output trace mechanism and 8479has a larger code and data size. Note that these values will vary 8480depending on the efficiency of the compiler and the compiler 8481options used during generation. 8482 8483 Previous Release 8484 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8485 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8486 Current Release: 8487 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8488 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8489 8490 84912) Linux 8492 8493Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8494free. While 3 out of 4 of our in-house systems work fine, the last 8495one still hangs when testing the LAPIC timer. 8496 8497Renamed many files in 2.5 kernel release to omit "acpi_" from the 8498name. 8499 8500Added warning on boot for Presario 711FR. 8501 8502Sleep improvements (Pavel Machek) 8503 8504ACPI can now be built without CONFIG_PCI enabled. 8505 8506IA64: Fixed memory map functions (JI Lee) 8507 8508 85093) iASL Compiler Version X2043: 8510 8511Added support to allow the compiler to be integrated into the MS 8512VC++ development environment for one-button compilation of single 8513files or entire projects -- with error-to-source-line mapping. 8514 8515Implemented support for compile-time constant folding for the 8516Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8517specification. This allows the ASL writer to use expressions 8518instead of Integer/Buffer/String constants in terms that must 8519evaluate to constants at compile time and will also simplify the 8520emitted AML in any such sub-expressions that can be folded 8521(evaluated at compile-time.) This increases the size of the 8522compiler significantly because a portion of the ACPI CA AML 8523interpreter is included within the compiler in order to pre- 8524evaluate constant expressions. 8525 8526 8527Fixed a problem with the "Unicode" ASL macro that caused the 8528compiler to fault. (This macro is used in conjunction with the 8529_STR reserved name.) 8530 8531Implemented an AML opcode optimization to use the Zero, One, and 8532Ones opcodes where possible to further reduce the size of integer 8533constants and thus reduce the overall size of the generated AML 8534code. 8535 8536Implemented error checking for new reserved terms for ACPI version 85372.0A. 8538 8539Implemented the -qr option to display the current list of ACPI 8540reserved names known to the compiler. 8541 8542Implemented the -qc option to display the current list of ASL 8543operators that are allowed within constant expressions and can 8544therefore be folded at compile time if the operands are constants. 8545 8546 85474) Documentation 8548 8549Updated the Programmer's Reference for new interfaces, data types, 8550and memory allocation model options. 8551 8552Updated the iASL Compiler User Reference to apply new format and 8553add information about new features and options. 8554 8555---------------------------------------- 855619 April 2002. Summary of changes for this release. 8557 85581) ACPI CA Core Subsystem Version 20020419: 8559 8560The source code base for the Core Subsystem has been completely 8561cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8562versions. The Lint option files used are included in the 8563/acpi/generate/lint directory. 8564 8565Implemented enhanced status/error checking across the entire 8566Hardware manager subsystem. Any hardware errors (reported from 8567the OSL) are now bubbled up and will abort a running control 8568method. 8569 8570 8571Fixed a problem where the per-ACPI-table integer width (32 or 64) 8572was stored only with control method nodes, causing a fault when 8573non-control method code was executed during table loading. The 8574solution implemented uses a global variable to indicate table 8575width across the entire ACPI subsystem. Therefore, ACPI CA does 8576not support mixed integer widths across different ACPI tables 8577(DSDT, SSDT). 8578 8579Fixed a problem where NULL extended fields (X fields) in an ACPI 85802.0 ACPI FADT caused the table load to fail. Although the 8581existing ACPI specification is a bit fuzzy on this topic, the new 8582behavior is to fall back on a ACPI 1.0 field if the corresponding 8583ACPI 2.0 X field is zero (even though the table revision indicates 8584a full ACPI 2.0 table.) The ACPI specification will be updated to 8585clarify this issue. 8586 8587Fixed a problem with the SystemMemory operation region handler 8588where memory was always accessed byte-wise even if the AML- 8589specified access width was larger than a byte. This caused 8590problems on systems with memory-mapped I/O. Memory is now 8591accessed with the width specified. On systems that do not support 8592non-aligned transfers, a check is made to guarantee proper address 8593alignment before proceeding in order to avoid an AML-caused 8594alignment fault within the kernel. 8595 8596 8597Fixed a problem with the ExtendedIrq resource where only one byte 8598of the 4-byte Irq field was extracted. 8599 8600Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8601function was out of date and required a rewrite. 8602 8603Code and Data Size: Current core subsystem library sizes are shown 8604below. These are the code and data sizes for the acpica.lib 8605produced by the Microsoft Visual C++ 6.0 compiler, and these 8606values do not include any ACPI driver or OSPM code. The debug 8607version of the code includes the debug output trace mechanism and 8608has a larger code and data size. Note that these values will vary 8609depending on the efficiency of the compiler and the compiler 8610options used during generation. 8611 8612 Previous Release 8613 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8614 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8615 Current Release: 8616 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8617 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8618 8619 86202) Linux 8621 8622PCI IRQ routing fixes (Dominik Brodowski) 8623 8624 86253) iASL Compiler Version X2042: 8626 8627Implemented an additional compile-time error check for a field 8628unit whose size + minimum access width would cause a run-time 8629access beyond the end-of-region. Previously, only the field size 8630itself was checked. 8631 8632The Core subsystem and iASL compiler now share a common parse 8633object in preparation for compile-time evaluation of the type 86343/4/5 ASL operators. 8635 8636 8637---------------------------------------- 8638Summary of changes for this release: 03_29_02 8639 86401) ACPI CA Core Subsystem Version 20020329: 8641 8642Implemented support for late evaluation of TermArg operands to 8643Buffer and Package objects. This allows complex expressions to be 8644used in the declarations of these object types. 8645 8646Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 86471.0, if the field was larger than 32 bits, it was returned as a 8648buffer - otherwise it was returned as an integer. In ACPI 2.0, 8649the field is returned as a buffer only if the field is larger than 865064 bits. The TableRevision is now considered when making this 8651conversion to avoid incompatibility with existing ASL code. 8652 8653Implemented logical addressing for AcpiOsGetRootPointer. This 8654allows an RSDP with either a logical or physical address. With 8655this support, the host OS can now override all ACPI tables with 8656one logical RSDP. Includes implementation of "typed" pointer 8657support to allow a common data type for both physical and logical 8658pointers internally. This required a change to the 8659AcpiOsGetRootPointer interface. 8660 8661Implemented the use of ACPI 2.0 Generic Address Structures for all 8662GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8663mapped I/O for these ACPI features. 8664 8665Initialization now ignores not only non-required tables (All 8666tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8667not validate the table headers of unrecognized tables. 8668 8669Fixed a problem where a notify handler could only be 8670installed/removed on an object of type Device. All "notify" 8671 8672objects are now supported -- Devices, Processor, Power, and 8673Thermal. 8674 8675Removed most verbosity from the ACPI_DB_INFO debug level. Only 8676critical information is returned when this debug level is enabled. 8677 8678Code and Data Size: Current core subsystem library sizes are shown 8679below. These are the code and data sizes for the acpica.lib 8680produced by the Microsoft Visual C++ 6.0 compiler, and these 8681values do not include any ACPI driver or OSPM code. The debug 8682version of the code includes the debug output trace mechanism and 8683has a larger code and data size. Note that these values will vary 8684depending on the efficiency of the compiler and the compiler 8685options used during generation. 8686 8687 Previous Release 8688 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8689 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8690 Current Release: 8691 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8692 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8693 8694 86952) Linux: 8696 8697The processor driver (acpi_processor.c) now fully supports ACPI 86982.0-based processor performance control (e.g. Intel(R) 8699SpeedStep(TM) technology) Note that older laptops that only have 8700the Intel "applet" interface are not supported through this. The 8701'limit' and 'performance' interface (/proc) are fully functional. 8702[Note that basic policy for controlling performance state 8703transitions will be included in the next version of ospmd.] The 8704idle handler was modified to more aggressively use C2, and PIIX4 8705errata handling underwent a complete overhaul (big thanks to 8706Dominik Brodowski). 8707 8708Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8709based devices in the ACPI namespace are now dynamically bound 8710(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8711This allows, among other things, ACPI to resolve bus numbers for 8712subordinate PCI bridges. 8713 8714Enhanced PCI IRQ routing to get the proper bus number for _PRT 8715entries defined underneath PCI bridges. 8716 8717Added IBM 600E to bad bios list due to invalid _ADR value for 8718PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8719 8720In the process of adding full MADT support (e.g. IOAPIC) for IA32 8721(acpi.c, mpparse.c) -- stay tuned. 8722 8723Added back visual differentiation between fixed-feature and 8724control-method buttons in dmesg. Buttons are also subtyped (e.g. 8725button/power/PWRF) to simplify button identification. 8726 8727We no longer use -Wno-unused when compiling debug. Please ignore 8728any "_THIS_MODULE defined but not used" messages. 8729 8730Can now shut down the system using "magic sysrq" key. 8731 8732 87333) iASL Compiler version 2041: 8734 8735Fixed a problem where conversion errors for hex/octal/decimal 8736constants were not reported. 8737 8738Implemented a fix for the General Register template Address field. 8739This field was 8 bits when it should be 64. 8740 8741Fixed a problem where errors/warnings were no longer being emitted 8742within the listing output file. 8743 8744Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8745exactly 4 characters, alphanumeric only. 8746 8747 8748 8749 8750---------------------------------------- 8751Summary of changes for this release: 03_08_02 8752 8753 87541) ACPI CA Core Subsystem Version 20020308: 8755 8756Fixed a problem with AML Fields where the use of the "AccessAny" 8757keyword could cause an interpreter error due to attempting to read 8758or write beyond the end of the parent Operation Region. 8759 8760Fixed a problem in the SystemMemory Operation Region handler where 8761an attempt was made to map memory beyond the end of the region. 8762This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8763errors on some Linux systems. 8764 8765Fixed a problem where the interpreter/namespace "search to root" 8766algorithm was not functioning for some object types. Relaxed the 8767internal restriction on the search to allow upsearches for all 8768external object types as well as most internal types. 8769 8770 87712) Linux: 8772 8773We now use safe_halt() macro versus individual calls to sti | hlt. 8774 8775Writing to the processor limit interface should now work. "echo 1" 8776will increase the limit, 2 will decrease, and 0 will reset to the 8777 8778default. 8779 8780 87813) ASL compiler: 8782 8783Fixed segfault on Linux version. 8784 8785 8786---------------------------------------- 8787Summary of changes for this release: 02_25_02 8788 87891) ACPI CA Core Subsystem: 8790 8791 8792Fixed a problem where the GPE bit masks were not initialized 8793properly, causing erratic GPE behavior. 8794 8795Implemented limited support for multiple calling conventions. The 8796code can be generated with either the VPL (variable parameter 8797list, or "C") convention, or the FPL (fixed parameter list, or 8798"Pascal") convention. The core subsystem is about 3.4% smaller 8799when generated with FPL. 8800 8801 88022) Linux 8803 8804Re-add some /proc/acpi/event functionality that was lost during 8805the rewrite 8806 8807Resolved issue with /proc events for fixed-feature buttons showing 8808up as the system device. 8809 8810Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8811 8812Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8813 8814Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8815 8816Fixed limit interface & usage to fix bugs with passive cooling 8817hysterisis. 8818 8819Restructured PRT support. 8820 8821 8822---------------------------------------- 8823Summary of changes for this label: 02_14_02 8824 8825 88261) ACPI CA Core Subsystem: 8827 8828Implemented support in AcpiLoadTable to allow loading of FACS and 8829FADT tables. 8830 8831Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8832been removed. All 64-bit platforms should be migrated to the ACPI 88332.0 tables. The actbl71.h header has been removed from the source 8834tree. 8835 8836All C macros defined within the subsystem have been prefixed with 8837"ACPI_" to avoid collision with other system include files. 8838 8839Removed the return value for the two AcpiOsPrint interfaces, since 8840it is never used and causes lint warnings for ignoring the return 8841value. 8842 8843Added error checking to all internal mutex acquire and release 8844calls. Although a failure from one of these interfaces is 8845probably a fatal system error, these checks will cause the 8846immediate abort of the currently executing method or interface. 8847 8848Fixed a problem where the AcpiSetCurrentResources interface could 8849fault. This was a side effect of the deployment of the new memory 8850allocation model. 8851 8852Fixed a couple of problems with the Global Lock support introduced 8853in the last major build. The "common" (1.0/2.0) internal FACS was 8854being overwritten with the FACS signature and clobbering the 8855Global Lock pointer. Also, the actual firmware FACS was being 8856unmapped after construction of the "common" FACS, preventing 8857access to the actual Global Lock field within it. The "common" 8858internal FACS is no longer installed as an actual ACPI table; it 8859is used simply as a global. 8860 8861Code and Data Size: Current core subsystem library sizes are shown 8862below. These are the code and data sizes for the acpica.lib 8863produced by the Microsoft Visual C++ 6.0 compiler, and these 8864values do not include any ACPI driver or OSPM code. The debug 8865version of the code includes the debug output trace mechanism and 8866has a larger code and data size. Note that these values will vary 8867depending on the efficiency of the compiler and the compiler 8868options used during generation. 8869 8870 Previous Release (02_07_01) 8871 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8872 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8873 Current Release: 8874 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8875 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8876 8877 88782) Linux 8879 8880Updated Linux-specific code for core macro and OSL interface 8881changes described above. 8882 8883Improved /proc/acpi/event. It now can be opened only once and has 8884proper poll functionality. 8885 8886Fixed and restructured power management (acpi_bus). 8887 8888Only create /proc "view by type" when devices of that class exist. 8889 8890Fixed "charging/discharging" bug (and others) in acpi_battery. 8891 8892Improved thermal zone code. 8893 8894 88953) ASL Compiler, version X2039: 8896 8897 8898Implemented the new compiler restriction on ASL String hex/octal 8899escapes to non-null, ASCII values. An error results if an invalid 8900value is used. (This will require an ACPI 2.0 specification 8901change.) 8902 8903AML object labels that are output to the optional C and ASM source 8904are now prefixed with both the ACPI table signature and table ID 8905to help guarantee uniqueness within a large BIOS project. 8906 8907 8908---------------------------------------- 8909Summary of changes for this label: 02_01_02 8910 89111) ACPI CA Core Subsystem: 8912 8913ACPI 2.0 support is complete in the entire Core Subsystem and the 8914ASL compiler. All new ACPI 2.0 operators are implemented and all 8915other changes for ACPI 2.0 support are complete. With 8916simultaneous code and data optimizations throughout the subsystem, 8917ACPI 2.0 support has been implemented with almost no additional 8918cost in terms of code and data size. 8919 8920Implemented a new mechanism for allocation of return buffers. If 8921the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8922be allocated on behalf of the caller. Consolidated all return 8923buffer validation and allocation to a common procedure. Return 8924buffers will be allocated via the primary OSL allocation interface 8925since it appears that a separate pool is not needed by most users. 8926If a separate pool is required for these buffers, the caller can 8927still use the original mechanism and pre-allocate the buffer(s). 8928 8929Implemented support for string operands within the DerefOf 8930operator. 8931 8932Restructured the Hardware and Event managers to be table driven, 8933simplifying the source code and reducing the amount of generated 8934code. 8935 8936Split the common read/write low-level ACPI register bitfield 8937procedure into a separate read and write, simplifying the code 8938considerably. 8939 8940Obsoleted the AcpiOsCallocate OSL interface. This interface was 8941used only a handful of times and didn't have enough critical mass 8942for a separate interface. Replaced with a common calloc procedure 8943in the core. 8944 8945Fixed a reported problem with the GPE number mapping mechanism 8946that allows GPE1 numbers to be non-contiguous with GPE0. 8947Reorganized the GPE information and shrunk a large array that was 8948originally large enough to hold info for all possible GPEs (256) 8949to simply large enough to hold all GPEs up to the largest GPE 8950number on the machine. 8951 8952Fixed a reported problem with resource structure alignment on 64- 8953bit platforms. 8954 8955Changed the AcpiEnableEvent and AcpiDisableEvent external 8956interfaces to not require any flags for the common case of 8957enabling/disabling a GPE. 8958 8959Implemented support to allow a "Notify" on a Processor object. 8960 8961Most TBDs in comments within the source code have been resolved 8962and eliminated. 8963 8964 8965Fixed a problem in the interpreter where a standalone parent 8966prefix (^) was not handled correctly in the interpreter and 8967debugger. 8968 8969Removed obsolete and unnecessary GPE save/restore code. 8970 8971Implemented Field support in the ASL Load operator. This allows a 8972table to be loaded from a named field, in addition to loading a 8973table directly from an Operation Region. 8974 8975Implemented timeout and handle support in the external Global Lock 8976interfaces. 8977 8978Fixed a problem in the AcpiDump utility where pathnames were no 8979longer being generated correctly during the dump of named objects. 8980 8981Modified the AML debugger to give a full display of if/while 8982predicates instead of just one AML opcode at a time. (The 8983predicate can have several nested ASL statements.) The old method 8984was confusing during single stepping. 8985 8986Code and Data Size: Current core subsystem library sizes are shown 8987below. These are the code and data sizes for the acpica.lib 8988produced by the Microsoft Visual C++ 6.0 compiler, and these 8989values do not include any ACPI driver or OSPM code. The debug 8990version of the code includes the debug output trace mechanism and 8991has a larger code and data size. Note that these values will vary 8992depending on the efficiency of the compiler and the compiler 8993options used during generation. 8994 8995 Previous Release (12_18_01) 8996 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8997 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8998 Current Release: 8999 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9000 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9001 90022) Linux 9003 9004 Implemented fix for PIIX reverse throttling errata (Processor 9005driver) 9006 9007Added new Limit interface (Processor and Thermal drivers) 9008 9009New thermal policy (Thermal driver) 9010 9011Many updates to /proc 9012 9013Battery "low" event support (Battery driver) 9014 9015Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9016 9017IA32 - IA64 initialization unification, no longer experimental 9018 9019Menuconfig options redesigned 9020 90213) ASL Compiler, version X2037: 9022 9023Implemented several new output features to simplify integration of 9024AML code into firmware: 1) Output the AML in C source code with 9025labels for each named ASL object. The original ASL source code 9026is interleaved as C comments. 2) Output the AML in ASM source code 9027with labels and interleaved ASL source. 3) Output the AML in 9028raw hex table form, in either C or ASM. 9029 9030Implemented support for optional string parameters to the 9031LoadTable operator. 9032 9033Completed support for embedded escape sequences within string 9034literals. The compiler now supports all single character escapes 9035as well as the Octal and Hex escapes. Note: the insertion of a 9036null byte into a string literal (via the hex/octal escape) causes 9037the string to be immediately terminated. A warning is issued. 9038 9039Fixed a problem where incorrect AML was generated for the case 9040where an ASL namepath consists of a single parent prefix ( 9041 9042) with no trailing name segments. 9043 9044The compiler has been successfully generated with a 64-bit C 9045compiler. 9046 9047 9048 9049 9050---------------------------------------- 9051Summary of changes for this label: 12_18_01 9052 90531) Linux 9054 9055Enhanced blacklist with reason and severity fields. Any table's 9056signature may now be used to identify a blacklisted system. 9057 9058Call _PIC control method to inform the firmware which interrupt 9059model the OS is using. Turn on any disabled link devices. 9060 9061Cleaned up busmgr /proc error handling (Andreas Dilger) 9062 9063 2) ACPI CA Core Subsystem: 9064 9065Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9066while loop) 9067 9068Completed implementation of the ACPI 2.0 "Continue", 9069"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9070operators. All new ACPI 2.0 operators are now implemented in both 9071the ASL compiler and the AML interpreter. The only remaining ACPI 90722.0 task is support for the String data type in the DerefOf 9073operator. Fixed a problem with AcquireMutex where the status code 9074was lost if the caller had to actually wait for the mutex. 9075 9076Increased the maximum ASL Field size from 64K bits to 4G bits. 9077 9078Completed implementation of the external Global Lock interfaces -- 9079AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9080Handler parameters were added. 9081 9082Completed another pass at removing warnings and issues when 9083compiling with 64-bit compilers. The code now compiles cleanly 9084with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9085add and subtract (diff) macros have changed considerably. 9086 9087 9088Created and deployed a new ACPI_SIZE type that is 64-bits wide on 908964-bit platforms, 32-bits on all others. This type is used 9090wherever memory allocation and/or the C sizeof() operator is used, 9091and affects the OSL memory allocation interfaces AcpiOsAllocate 9092and AcpiOsCallocate. 9093 9094Implemented sticky user breakpoints in the AML debugger. 9095 9096Code and Data Size: Current core subsystem library sizes are shown 9097below. These are the code and data sizes for the acpica.lib 9098produced by the Microsoft Visual C++ 6.0 compiler, and these 9099values do not include any ACPI driver or OSPM code. The debug 9100version of the code includes the debug output trace mechanism and 9101has a larger code and data size. Note that these values will vary 9102depending on the efficiency of the compiler and the compiler 9103options used during generation. 9104 9105 Previous Release (12_05_01) 9106 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9107 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9108 Current Release: 9109 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9110 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9111 9112 3) ASL Compiler, version X2034: 9113 9114Now checks for (and generates an error if detected) the use of a 9115Break or Continue statement without an enclosing While statement. 9116 9117 9118Successfully generated the compiler with the Intel 64-bit C 9119compiler. 9120 9121 ---------------------------------------- 9122Summary of changes for this label: 12_05_01 9123 9124 1) ACPI CA Core Subsystem: 9125 9126The ACPI 2.0 CopyObject operator is fully implemented. This 9127operator creates a new copy of an object (and is also used to 9128bypass the "implicit conversion" mechanism of the Store operator.) 9129 9130The ACPI 2.0 semantics for the SizeOf operator are fully 9131implemented. The change is that performing a SizeOf on a 9132reference object causes an automatic dereference of the object to 9133tha actual value before the size is evaluated. This behavior was 9134undefined in ACPI 1.0. 9135 9136The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9137have been implemented. The interrupt polarity and mode are now 9138independently set. 9139 9140Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9141appearing in Package objects were not properly converted to 9142integers when the internal Package was converted to an external 9143object (via the AcpiEvaluateObject interface.) 9144 9145Fixed a problem with the namespace object deletion mechanism for 9146objects created by control methods. There were two parts to this 9147problem: 1) Objects created during the initialization phase method 9148parse were not being deleted, and 2) The object owner ID mechanism 9149to track objects was broken. 9150 9151Fixed a problem where the use of the ASL Scope operator within a 9152control method would result in an invalid opcode exception. 9153 9154Fixed a problem introduced in the previous label where the buffer 9155length required for the _PRT structure was not being returned 9156correctly. 9157 9158Code and Data Size: Current core subsystem library sizes are shown 9159below. These are the code and data sizes for the acpica.lib 9160produced by the Microsoft Visual C++ 6.0 compiler, and these 9161values do not include any ACPI driver or OSPM code. The debug 9162version of the code includes the debug output trace mechanism and 9163has a larger code and data size. Note that these values will vary 9164depending on the efficiency of the compiler and the compiler 9165options used during generation. 9166 9167 Previous Release (11_20_01) 9168 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9169 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9170 9171 Current Release: 9172 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9173 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9174 9175 2) Linux: 9176 9177Updated all files to apply cleanly against 2.4.16. 9178 9179Added basic PCI Interrupt Routing Table (PRT) support for IA32 9180(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9181version supports both static and dyanmic PRT entries, but dynamic 9182entries are treated as if they were static (not yet 9183reconfigurable). Architecture- specific code to use this data is 9184absent on IA32 but should be available shortly. 9185 9186Changed the initialization sequence to start the ACPI interpreter 9187(acpi_init) prior to initialization of the PCI driver (pci_init) 9188in init/main.c. This ordering is required to support PRT and 9189facilitate other (future) enhancement. A side effect is that the 9190ACPI bus driver and certain device drivers can no longer be loaded 9191as modules. 9192 9193Modified the 'make menuconfig' options to allow PCI Interrupt 9194Routing support to be included without the ACPI Bus and other 9195device drivers. 9196 9197 3) ASL Compiler, version X2033: 9198 9199Fixed some issues with the use of the new CopyObject and 9200DataTableRegion operators. Both are fully functional. 9201 9202 ---------------------------------------- 9203Summary of changes for this label: 11_20_01 9204 9205 20 November 2001. Summary of changes for this release. 9206 9207 1) ACPI CA Core Subsystem: 9208 9209Updated Index support to match ACPI 2.0 semantics. Storing a 9210Integer, String, or Buffer to an Index of a Buffer will store only 9211the least-significant byte of the source to the Indexed buffer 9212byte. Multiple writes are not performed. 9213 9214Fixed a problem where the access type used in an AccessAs ASL 9215operator was not recorded correctly into the field object. 9216 9217Fixed a problem where ASL Event objects were created in a 9218signalled state. Events are now created in an unsignalled state. 9219 9220The internal object cache is now purged after table loading and 9221initialization to reduce the use of dynamic kernel memory -- on 9222the assumption that object use is greatest during the parse phase 9223of the entire table (versus the run-time use of individual control 9224methods.) 9225 9226ACPI 2.0 variable-length packages are now fully operational. 9227 9228Code and Data Size: Code and Data optimizations have permitted new 9229feature development with an actual reduction in the library size. 9230Current core subsystem library sizes are shown below. These are 9231the code and data sizes for the acpica.lib produced by the 9232Microsoft Visual C++ 6.0 compiler, and these values do not include 9233any ACPI driver or OSPM code. The debug version of the code 9234includes the debug output trace mechanism and has a larger code 9235and data size. Note that these values will vary depending on the 9236efficiency of the compiler and the compiler options used during 9237generation. 9238 9239 Previous Release (11_09_01): 9240 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9241 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9242 9243 Current Release: 9244 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9245 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9246 9247 2) Linux: 9248 9249Enhanced the ACPI boot-time initialization code to allow the use 9250of Local APIC tables for processor enumeration on IA-32, and to 9251pave the way for a fully MPS-free boot (on SMP systems) in the 9252near future. This functionality replaces 9253arch/i386/kernel/acpitables.c, which was introduced in an earlier 92542.4.15-preX release. To enable this feature you must add 9255"acpi_boot=on" to the kernel command line -- see the help entry 9256for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9257the works... 9258 9259Restructured the configuration options to allow boot-time table 9260parsing support without inclusion of the ACPI Interpreter (and 9261other) code. 9262 9263NOTE: This release does not include fixes for the reported events, 9264power-down, and thermal passive cooling issues (coming soon). 9265 9266 3) ASL Compiler: 9267 9268Added additional typechecking for Fields within restricted access 9269Operation Regions. All fields within EC and CMOS regions must be 9270declared with ByteAcc. All fields withing SMBus regions must be 9271declared with the BufferAcc access type. 9272 9273Fixed a problem where the listing file output of control methods 9274no longer interleaved the actual AML code with the ASL source 9275code. 9276 9277 9278 9279 9280---------------------------------------- 9281Summary of changes for this label: 11_09_01 9282 92831) ACPI CA Core Subsystem: 9284 9285Implemented ACPI 2.0-defined support for writes to fields with a 9286Buffer, String, or Integer source operand that is smaller than the 9287target field. In these cases, the source operand is zero-extended 9288to fill the target field. 9289 9290Fixed a problem where a Field starting bit offset (within the 9291parent operation region) was calculated incorrectly if the 9292 9293alignment of the field differed from the access width. This 9294affected CreateWordField, CreateDwordField, CreateQwordField, and 9295possibly other fields that use the "AccessAny" keyword. 9296 9297Fixed a problem introduced in the 11_02_01 release where indirect 9298stores through method arguments did not operate correctly. 9299 93002) Linux: 9301 9302Implemented boot-time ACPI table parsing support 9303(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9304facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9305legacy BIOS interfaces (e.g. MPS) for the configuration of system 9306processors, memory, and interrupts during setup_arch(). Note that 9307this patch does not include the required architecture-specific 9308changes required to apply this information -- subsequent patches 9309will be posted for both IA32 and IA64 to achieve this. 9310 9311Added low-level sleep support for IA32 platforms, courtesy of Pat 9312Mochel. This allows IA32 systems to transition to/from various 9313sleeping states (e.g. S1, S3), although the lack of a centralized 9314driver model and power-manageable drivers will prevent its 9315(successful) use on most systems. 9316 9317Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9318submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9319tables" option, etc. 9320 9321Increased the default timeout for the EC driver from 1ms to 10ms 9322(1000 cycles of 10us) to try to address AE_TIME errors during EC 9323transactions. 9324 9325 ---------------------------------------- 9326Summary of changes for this label: 11_02_01 9327 93281) ACPI CA Core Subsystem: 9329 9330ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9331(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9332implemented. 9333 9334OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9335changes to support ACPI 2.0 Qword field access. Read/Write 9336PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9337accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9338the value parameter for the address space handler interface is now 9339an ACPI_INTEGER. OSL implementations of these interfaces must now 9340handle the case where the Width parameter is 64. 9341 9342Index Fields: Fixed a problem where unaligned bit assembly and 9343disassembly for IndexFields was not supported correctly. 9344 9345Index and Bank Fields: Nested Index and Bank Fields are now 9346supported. During field access, a check is performed to ensure 9347that the value written to an Index or Bank register is not out of 9348the range of the register. The Index (or Bank) register is 9349written before each access to the field data. Future support will 9350include allowing individual IndexFields to be wider than the 9351DataRegister width. 9352 9353Fields: Fixed a problem where the AML interpreter was incorrectly 9354attempting to write beyond the end of a Field/OpRegion. This was 9355a boundary case that occurred when a DWORD field was written to a 9356BYTE access OpRegion, forcing multiple writes and causing the 9357interpreter to write one datum too many. 9358 9359Fields: Fixed a problem with Field/OpRegion access where the 9360starting bit address of a field was incorrectly calculated if the 9361current access type was wider than a byte (WordAcc, DwordAcc, or 9362QwordAcc). 9363 9364Fields: Fixed a problem where forward references to individual 9365FieldUnits (individual Field names within a Field definition) were 9366not resolved during the AML table load. 9367 9368Fields: Fixed a problem where forward references from a Field 9369definition to the parent Operation Region definition were not 9370resolved during the AML table load. 9371 9372Fields: Duplicate FieldUnit names within a scope are now detected 9373during AML table load. 9374 9375Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9376returned an incorrect name for the root node. 9377 9378Code and Data Size: Code and Data optimizations have permitted new 9379feature development with an actual reduction in the library size. 9380Current core subsystem library sizes are shown below. These are 9381the code and data sizes for the acpica.lib produced by the 9382Microsoft Visual C++ 6.0 compiler, and these values do not include 9383any ACPI driver or OSPM code. The debug version of the code 9384includes the debug output trace mechanism and has a larger code 9385and data size. Note that these values will vary depending on the 9386efficiency of the compiler and the compiler options used during 9387generation. 9388 9389 Previous Release (10_18_01): 9390 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9391 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9392 9393 Current Release: 9394 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9395 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9396 9397 2) Linux: 9398 9399Improved /proc processor output (Pavel Machek) Re-added 9400MODULE_LICENSE("GPL") to all modules. 9401 9402 3) ASL Compiler version X2030: 9403 9404Duplicate FieldUnit names within a scope are now detected and 9405flagged as errors. 9406 9407 4) Documentation: 9408 9409Programmer Reference updated to reflect OSL and address space 9410handler interface changes described above. 9411 9412---------------------------------------- 9413Summary of changes for this label: 10_18_01 9414 9415ACPI CA Core Subsystem: 9416 9417Fixed a problem with the internal object reference count mechanism 9418that occasionally caused premature object deletion. This resolves 9419all of the outstanding problem reports where an object is deleted 9420in the middle of an interpreter evaluation. Although this problem 9421only showed up in rather obscure cases, the solution to the 9422problem involved an adjustment of all reference counts involving 9423objects attached to namespace nodes. 9424 9425Fixed a problem with Field support in the interpreter where 9426writing to an aligned field whose length is an exact multiple (2 9427or greater) of the field access granularity would cause an attempt 9428to write beyond the end of the field. 9429 9430The top level AML opcode execution functions within the 9431interpreter have been renamed with a more meaningful and 9432consistent naming convention. The modules exmonad.c and 9433exdyadic.c were eliminated. New modules are exoparg1.c, 9434exoparg2.c, exoparg3.c, and exoparg6.c. 9435 9436Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9437 9438Fixed a problem where the AML debugger was causing some internal 9439objects to not be deleted during subsystem termination. 9440 9441Fixed a problem with the external AcpiEvaluateObject interface 9442where the subsystem would fault if the named object to be 9443evaluated refered to a constant such as Zero, Ones, etc. 9444 9445Fixed a problem with IndexFields and BankFields where the 9446subsystem would fault if the index, data, or bank registers were 9447not defined in the same scope as the field itself. 9448 9449Added printf format string checking for compilers that support 9450this feature. Corrected more than 50 instances of issues with 9451format specifiers within invocations of ACPI_DEBUG_PRINT 9452throughout the core subsystem code. 9453 9454The ASL "Revision" operator now returns the ACPI support level 9455implemented in the core - the value "2" since the ACPI 2.0 support 9456is more than 50% implemented. 9457 9458Enhanced the output of the AML debugger "dump namespace" command 9459to output in a more human-readable form. 9460 9461Current core subsystem library code sizes are shown below. These 9462 9463are the code and data sizes for the acpica.lib produced by the 9464Microsoft Visual C++ 6.0 compiler, and these values do not include 9465any ACPI driver or OSPM code. The debug version of the code 9466includes the full debug trace mechanism -- leading to a much 9467 9468larger code and data size. Note that these values will vary 9469depending on the efficiency of the compiler and the compiler 9470options used during generation. 9471 9472 Previous Label (09_20_01): 9473 Non-Debug Version: 65K Code, 5K Data, 70K Total 9474 Debug Version: 138K Code, 58K Data, 196K Total 9475 9476 This Label: 9477 9478 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9479 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9480 9481Linux: 9482 9483Implemented a "Bad BIOS Blacklist" to track machines that have 9484known ASL/AML problems. 9485 9486Enhanced the /proc interface for the thermal zone driver and added 9487support for _HOT (the critical suspend trip point). The 'info' 9488file now includes threshold/policy information, and allows setting 9489of _SCP (cooling preference) and _TZP (polling frequency) values 9490to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9491frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9492preference to the passive/quiet mode (if supported by the ASL). 9493 9494Implemented a workaround for a gcc bug that resuted in an OOPs 9495when loading the control method battery driver. 9496 9497 ---------------------------------------- 9498Summary of changes for this label: 09_20_01 9499 9500 ACPI CA Core Subsystem: 9501 9502The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9503modified to allow individual GPE levels to be flagged as wake- 9504enabled (i.e., these GPEs are to remain enabled when the platform 9505sleeps.) 9506 9507The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9508support wake-enabled GPEs. This means that upon entering the 9509sleep state, all GPEs that are not wake-enabled are disabled. 9510When leaving the sleep state, these GPEs are reenabled. 9511 9512A local double-precision divide/modulo module has been added to 9513enhance portability to OS kernels where a 64-bit math library is 9514not available. The new module is "utmath.c". 9515 9516Several optimizations have been made to reduce the use of CPU 9517stack. Originally over 2K, the maximum stack usage is now below 95182K at 1860 bytes (1.82k) 9519 9520Fixed a problem with the AcpiGetFirmwareTable interface where the 9521root table pointer was not mapped into a logical address properly. 9522 9523Fixed a problem where a NULL pointer was being dereferenced in the 9524interpreter code for the ASL Notify operator. 9525 9526Fixed a problem where the use of the ASL Revision operator 9527returned an error. This operator now returns the current version 9528of the ACPI CA core subsystem. 9529 9530Fixed a problem where objects passed as control method parameters 9531to AcpiEvaluateObject were always deleted at method termination. 9532However, these objects may end up being stored into the namespace 9533by the called method. The object reference count mechanism was 9534applied to these objects instead of a force delete. 9535 9536Fixed a problem where static strings or buffers (contained in the 9537AML code) that are declared as package elements within the ASL 9538code could cause a fault because the interpreter would attempt to 9539delete them. These objects are now marked with the "static 9540object" flag to prevent any attempt to delete them. 9541 9542Implemented an interpreter optimization to use operands directly 9543from the state object instead of extracting the operands to local 9544variables. This reduces stack use and code size, and improves 9545performance. 9546 9547The module exxface.c was eliminated as it was an unnecessary extra 9548layer of code. 9549 9550Current core subsystem library code sizes are shown below. These 9551are the code and data sizes for the acpica.lib produced by the 9552Microsoft Visual C++ 6.0 compiler, and these values do not include 9553any ACPI driver or OSPM code. The debug version of the code 9554includes the full debug trace mechanism -- leading to a much 9555larger code and data size. Note that these values will vary 9556depending on the efficiency of the compiler and the compiler 9557options used during generation. 9558 9559 Non-Debug Version: 65K Code, 5K Data, 70K Total 9560(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9561Total (Previously 195K) 9562 9563Linux: 9564 9565Support for ACPI 2.0 64-bit integers has been added. All ACPI 9566Integer objects are now 64 bits wide 9567 9568All Acpi data types and structures are now in lower case. Only 9569Acpi macros are upper case for differentiation. 9570 9571 Documentation: 9572 9573Changes to the external interfaces as described above. 9574 9575 ---------------------------------------- 9576Summary of changes for this label: 08_31_01 9577 9578 ACPI CA Core Subsystem: 9579 9580A bug with interpreter implementation of the ASL Divide operator 9581was found and fixed. The implicit function return value (not the 9582explicit store operands) was returning the remainder instead of 9583the quotient. This was a longstanding bug and it fixes several 9584known outstanding issues on various platforms. 9585 9586The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9587been further optimized for size. There are 700 invocations of the 9588DEBUG_PRINT macro alone, so each optimization reduces the size of 9589the debug version of the subsystem significantly. 9590 9591A stack trace mechanism has been implemented. The maximum stack 9592usage is about 2K on 32-bit platforms. The debugger command "stat 9593stack" will display the current maximum stack usage. 9594 9595All public symbols and global variables within the subsystem are 9596now prefixed with the string "Acpi". This keeps all of the 9597symbols grouped together in a kernel map, and avoids conflicts 9598with other kernel subsystems. 9599 9600Most of the internal fixed lookup tables have been moved into the 9601code segment via the const operator. 9602 9603Several enhancements have been made to the interpreter to both 9604reduce the code size and improve performance. 9605 9606Current core subsystem library code sizes are shown below. These 9607are the code and data sizes for the acpica.lib produced by the 9608Microsoft Visual C++ 6.0 compiler, and these values do not include 9609any ACPI driver or OSPM code. The debug version of the code 9610includes the full debug trace mechanism which contains over 700 9611invocations of the DEBUG_PRINT macro, 500 function entry macro 9612invocations, and over 900 function exit macro invocations -- 9613leading to a much larger code and data size. Note that these 9614values will vary depending on the efficiency of the compiler and 9615the compiler options used during generation. 9616 9617 Non-Debug Version: 64K Code, 5K Data, 69K Total 9618Debug Version: 137K Code, 58K Data, 195K Total 9619 9620 Linux: 9621 9622Implemented wbinvd() macro, pending a kernel-wide definition. 9623 9624Fixed /proc/acpi/event to handle poll() and short reads. 9625 9626 ASL Compiler, version X2026: 9627 9628Fixed a problem introduced in the previous label where the AML 9629 9630code emitted for package objects produced packages with zero 9631length. 9632 9633 ---------------------------------------- 9634Summary of changes for this label: 08_16_01 9635 9636ACPI CA Core Subsystem: 9637 9638The following ACPI 2.0 ASL operators have been implemented in the 9639AML interpreter (These are already supported by the Intel ASL 9640compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9641ToBuffer. Support for 64-bit AML constants is implemented in the 9642AML parser, debugger, and disassembler. 9643 9644The internal memory tracking mechanism (leak detection code) has 9645been upgraded to reduce the memory overhead (a separate tracking 9646block is no longer allocated for each memory allocation), and now 9647supports all of the internal object caches. 9648 9649The data structures and code for the internal object caches have 9650been coelesced and optimized so that there is a single cache and 9651memory list data structure and a single group of functions that 9652implement generic cache management. This has reduced the code 9653size in both the debug and release versions of the subsystem. 9654 9655The DEBUG_PRINT macro(s) have been optimized for size and replaced 9656by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9657different, because it generates a single call to an internal 9658function. This results in a savings of about 90 bytes per 9659invocation, resulting in an overall code and data savings of about 966016% in the debug version of the subsystem. 9661 9662 Linux: 9663 9664Fixed C3 disk corruption problems and re-enabled C3 on supporting 9665machines. 9666 9667Integrated low-level sleep code by Patrick Mochel. 9668 9669Further tweaked source code Linuxization. 9670 9671Other minor fixes. 9672 9673 ASL Compiler: 9674 9675Support for ACPI 2.0 variable length packages is fixed/completed. 9676 9677Fixed a problem where the optional length parameter for the ACPI 96782.0 ToString operator. 9679 9680Fixed multiple extraneous error messages when a syntax error is 9681detected within the declaration line of a control method. 9682 9683 ---------------------------------------- 9684Summary of changes for this label: 07_17_01 9685 9686ACPI CA Core Subsystem: 9687 9688Added a new interface named AcpiGetFirmwareTable to obtain any 9689ACPI table via the ACPI signature. The interface can be called at 9690any time during kernel initialization, even before the kernel 9691virtual memory manager is initialized and paging is enabled. This 9692allows kernel subsystems to obtain ACPI tables very early, even 9693before the ACPI CA subsystem is initialized. 9694 9695Fixed a problem where Fields defined with the AnyAcc attribute 9696could be resolved to the incorrect address under the following 9697conditions: 1) the field width is larger than 8 bits and 2) the 9698parent operation region is not defined on a DWORD boundary. 9699 9700Fixed a problem where the interpreter is not being locked during 9701namespace initialization (during execution of the _INI control 9702methods), causing an error when an attempt is made to release it 9703later. 9704 9705ACPI 2.0 support in the AML Interpreter has begun and will be 9706ongoing throughout the rest of this year. In this label, The Mod 9707operator is implemented. 9708 9709Added a new data type to contain full PCI addresses named 9710ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9711and Function values. 9712 9713 Linux: 9714 9715Enhanced the Linux version of the source code to change most 9716capitalized ACPI type names to lowercase. For example, all 9717instances of ACPI_STATUS are changed to acpi_status. This will 9718result in a large diff, but the change is strictly cosmetic and 9719aligns the CA code closer to the Linux coding standard. 9720 9721OSL Interfaces: 9722 9723The interfaces to the PCI configuration space have been changed to 9724add the PCI Segment number and to split the single 32-bit combined 9725DeviceFunction field into two 16-bit fields. This was 9726accomplished by moving the four values that define an address in 9727PCI configuration space (segment, bus, device, and function) to 9728the new ACPI_PCI_ID structure. 9729 9730The changes to the PCI configuration space interfaces led to a 9731reexamination of the complete set of address space access 9732interfaces for PCI, I/O, and Memory. The previously existing 18 9733interfaces have proven difficult to maintain (any small change 9734must be propagated across at least 6 interfaces) and do not easily 9735allow for future expansion to 64 bits if necessary. Also, on some 9736systems, it would not be appropriate to demultiplex the access 9737width (8, 16, 32,or 64) before calling the OSL if the 9738corresponding native OS interfaces contain a similar access width 9739parameter. For these reasons, the 18 address space interfaces 9740have been replaced by these 6 new ones: 9741 9742AcpiOsReadPciConfiguration 9743AcpiOsWritePciConfiguration 9744AcpiOsReadMemory 9745AcpiOsWriteMemory 9746AcpiOsReadPort 9747AcpiOsWritePort 9748 9749Added a new interface named AcpiOsGetRootPointer to allow the OSL 9750to perform the platform and/or OS-specific actions necessary to 9751obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9752interface will simply call down to the CA core to perform the low- 9753memory search for the table. On IA-64, the RSDP is obtained from 9754EFI. Migrating this interface to the OSL allows the CA core to 9755 9756remain OS and platform independent. 9757 9758Added a new interface named AcpiOsSignal to provide a generic 9759"function code and pointer" interface for various miscellaneous 9760signals and notifications that must be made to the host OS. The 9761first such signals are intended to support the ASL Fatal and 9762Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9763interface has been obsoleted. 9764 9765The definition of the AcpiFormatException interface has been 9766changed to simplify its use. The caller no longer must supply a 9767buffer to the call; A pointer to a const string is now returned 9768directly. This allows the call to be easily used in printf 9769statements, etc. since the caller does not have to manage a local 9770buffer. 9771 9772 9773 ASL Compiler, Version X2025: 9774 9775The ACPI 2.0 Switch/Case/Default operators have been implemented 9776and are fully functional. They will work with all ACPI 1.0 9777interpreters, since the operators are simply translated to If/Else 9778pairs. 9779 9780The ACPI 2.0 ElseIf operator is implemented and will also work 9781with 1.0 interpreters, for the same reason. 9782 9783Implemented support for ACPI 2.0 variable-length packages. These 9784packages have a separate opcode, and their size is determined by 9785the interpreter at run-time. 9786 9787Documentation The ACPI CA Programmer Reference has been updated to 9788reflect the new interfaces and changes to existing interfaces. 9789 9790 ------------------------------------------ 9791Summary of changes for this label: 06_15_01 9792 9793 ACPI CA Core Subsystem: 9794 9795Fixed a problem where a DWORD-accessed field within a Buffer 9796object would get its byte address inadvertently rounded down to 9797the nearest DWORD. Buffers are always Byte-accessible. 9798 9799 ASL Compiler, version X2024: 9800 9801Fixed a problem where the Switch() operator would either fault or 9802hang the compiler. Note however, that the AML code for this ACPI 98032.0 operator is not yet implemented. 9804 9805Compiler uses the new AcpiOsGetTimer interface to obtain compile 9806timings. 9807 9808Implementation of the CreateField operator automatically converts 9809a reference to a named field within a resource descriptor from a 9810byte offset to a bit offset if required. 9811 9812Added some missing named fields from the resource descriptor 9813support. These are the names that are automatically created by the 9814compiler to reference fields within a descriptor. They are only 9815valid at compile time and are not passed through to the AML 9816interpreter. 9817 9818Resource descriptor named fields are now typed as Integers and 9819subject to compile-time typechecking when used in expressions. 9820 9821 ------------------------------------------ 9822Summary of changes for this label: 05_18_01 9823 9824 ACPI CA Core Subsystem: 9825 9826Fixed a couple of problems in the Field support code where bits 9827from adjacent fields could be returned along with the proper field 9828bits. Restructured the field support code to improve performance, 9829readability and maintainability. 9830 9831New DEBUG_PRINTP macro automatically inserts the procedure name 9832into the output, saving hundreds of copies of procedure name 9833strings within the source, shrinking the memory footprint of the 9834debug version of the core subsystem. 9835 9836 Source Code Structure: 9837 9838The source code directory tree was restructured to reflect the 9839current organization of the component architecture. Some files 9840and directories have been moved and/or renamed. 9841 9842 Linux: 9843 9844Fixed leaking kacpidpc processes. 9845 9846Fixed queueing event data even when /proc/acpi/event is not 9847opened. 9848 9849 ASL Compiler, version X2020: 9850 9851Memory allocation performance enhancement - over 24X compile time 9852improvement on large ASL files. Parse nodes and namestring 9853buffers are now allocated from a large internal compiler buffer. 9854 9855The temporary .SRC file is deleted unless the "-s" option is 9856specified 9857 9858The "-d" debug output option now sends all output to the .DBG file 9859instead of the console. 9860 9861"External" second parameter is now optional 9862 9863"ElseIf" syntax now properly allows the predicate 9864 9865Last operand to "Load" now recognized as a Target operand 9866 9867Debug object can now be used anywhere as a normal object. 9868 9869ResourceTemplate now returns an object of type BUFFER 9870 9871EISAID now returns an object of type INTEGER 9872 9873"Index" now works with a STRING operand 9874 9875"LoadTable" now accepts optional parameters 9876 9877"ToString" length parameter is now optional 9878 9879"Interrupt (ResourceType," parse error fixed. 9880 9881"Register" with a user-defined region space parse error fixed 9882 9883Escaped backslash at the end of a string ("\\") scan/parse error 9884fixed 9885 9886"Revision" is now an object of type INTEGER. 9887 9888 9889 9890------------------------------------------ 9891Summary of changes for this label: 05_02_01 9892 9893Linux: 9894 9895/proc/acpi/event now blocks properly. 9896 9897Removed /proc/sys/acpi. You can still dump your DSDT from 9898/proc/acpi/dsdt. 9899 9900 ACPI CA Core Subsystem: 9901 9902Fixed a problem introduced in the previous label where some of the 9903"small" resource descriptor types were not recognized. 9904 9905Improved error messages for the case where an ASL Field is outside 9906the range of the parent operation region. 9907 9908 ASL Compiler, version X2018: 9909 9910 9911Added error detection for ASL Fields that extend beyond the length 9912of the parent operation region (only if the length of the region 9913is known at compile time.) This includes fields that have a 9914minimum access width that is smaller than the parent region, and 9915individual field units that are partially or entirely beyond the 9916extent of the parent. 9917 9918 9919 9920------------------------------------------ 9921Summary of changes for this label: 04_27_01 9922 9923 ACPI CA Core Subsystem: 9924 9925Fixed a problem where the namespace mutex could be released at the 9926wrong time during execution of AcpiRemoveAddressSpaceHandler. 9927 9928Added optional thread ID output for debug traces, to simplify 9929debugging of multiple threads. Added context switch notification 9930when the debug code realizes that a different thread is now 9931executing ACPI code. 9932 9933Some additional external data types have been prefixed with the 9934string "ACPI_" for consistency. This may effect existing code. 9935The data types affected are the external callback typedefs - e.g., 9936 9937WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9938 9939 Linux: 9940 9941Fixed an issue with the OSL semaphore implementation where a 9942thread was waking up with an error from receiving a SIGCHLD 9943signal. 9944 9945Linux version of ACPI CA now uses the system C library for string 9946manipulation routines instead of a local implementation. 9947 9948Cleaned up comments and removed TBDs. 9949 9950 ASL Compiler, version X2017: 9951 9952Enhanced error detection and reporting for all file I/O 9953operations. 9954 9955 Documentation: 9956 9957Programmer Reference updated to version 1.06. 9958 9959 9960 9961------------------------------------------ 9962Summary of changes for this label: 04_13_01 9963 9964 ACPI CA Core Subsystem: 9965 9966Restructured support for BufferFields and RegionFields. 9967BankFields support is now fully operational. All known 32-bit 9968limitations on field sizes have been removed. Both BufferFields 9969and (Operation) RegionFields are now supported by the same field 9970management code. 9971 9972Resource support now supports QWORD address and IO resources. The 997316/32/64 bit address structures and the Extended IRQ structure 9974have been changed to properly handle Source Resource strings. 9975 9976A ThreadId of -1 is now used to indicate a "mutex not acquired" 9977condition internally and must never be returned by AcpiOsThreadId. 9978This reserved value was changed from 0 since Unix systems allow a 9979thread ID of 0. 9980 9981Linux: 9982 9983Driver code reorganized to enhance portability 9984 9985Added a kernel configuration option to control ACPI_DEBUG 9986 9987Fixed the EC driver to honor _GLK. 9988 9989ASL Compiler, version X2016: 9990 9991Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9992address space was set to 0, not 0x7f as it should be. 9993 9994 ------------------------------------------ 9995Summary of changes for this label: 03_13_01 9996 9997 ACPI CA Core Subsystem: 9998 9999During ACPI initialization, the _SB_._INI method is now run if 10000present. 10001 10002Notify handler fix - notifies are deferred until the parent method 10003completes execution. This fixes the "mutex already acquired" 10004issue seen occasionally. 10005 10006Part of the "implicit conversion" rules in ACPI 2.0 have been 10007found to cause compatibility problems with existing ASL/AML. The 10008convert "result-to-target-type" implementation has been removed 10009for stores to method Args and Locals. Source operand conversion 10010is still fully implemented. Possible changes to ACPI 2.0 10011specification pending. 10012 10013Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10014length. 10015 10016Fix for compiler warnings for 64-bit compiles. 10017 10018 Linux: 10019 10020/proc output aligned for easier parsing. 10021 10022Release-version compile problem fixed. 10023 10024New kernel configuration options documented in Configure.help. 10025 10026IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10027context" message. 10028 10029 OSPM: 10030 10031Power resource driver integrated with bus manager. 10032 10033Fixed kernel fault during active cooling for thermal zones. 10034 10035Source Code: 10036 10037The source code tree has been restructured. 10038 10039 10040 10041------------------------------------------ 10042Summary of changes for this label: 03_02_01 10043 10044 Linux OS Services Layer (OSL): 10045 10046Major revision of all Linux-specific code. 10047 10048Modularized all ACPI-specific drivers. 10049 10050Added new thermal zone and power resource drivers. 10051 10052Revamped /proc interface (new functionality is under /proc/acpi). 10053 10054New kernel configuration options. 10055 10056 Linux known issues: 10057 10058New kernel configuration options not documented in Configure.help 10059yet. 10060 10061 10062Module dependencies not currently implemented. If used, they 10063should be loaded in this order: busmgr, power, ec, system, 10064processor, battery, ac_adapter, button, thermal. 10065 10066Modules will not load if CONFIG_MODVERSION is set. 10067 10068IBM 600E - entering S5 may reboot instead of shutting down. 10069 10070IBM 600E - Sleep button may generate "Invalid <NULL> context" 10071message. 10072 10073Some systems may fail with "execution mutex already acquired" 10074message. 10075 10076 ACPI CA Core Subsystem: 10077 10078Added a new OSL Interface, AcpiOsGetThreadId. This was required 10079for the deadlock detection code. Defined to return a non-zero, 32- 10080bit thread ID for the currently executing thread. May be a non- 10081zero constant integer on single-thread systems. 10082 10083Implemented deadlock detection for internal subsystem mutexes. We 10084may add conditional compilation for this code (debug only) later. 10085 10086ASL/AML Mutex object semantics are now fully supported. This 10087includes multiple acquires/releases by owner and support for the 10088 10089Mutex SyncLevel parameter. 10090 10091A new "Force Release" mechanism automatically frees all ASL 10092Mutexes that have been acquired but not released when a thread 10093exits the interpreter. This forces conformance to the ACPI spec 10094("All mutexes must be released when an invocation exits") and 10095prevents deadlocked ASL threads. This mechanism can be expanded 10096(later) to monitor other resource acquisitions if OEM ASL code 10097continues to misbehave (which it will). 10098 10099Several new ACPI exception codes have been added for the Mutex 10100support. 10101 10102Recursive method calls are now allowed and supported (the ACPI 10103spec does in fact allow recursive method calls.) The number of 10104recursive calls is subject to the restrictions imposed by the 10105SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10106parameter. 10107 10108Implemented support for the SyncLevel parameter for control 10109methods (ACPI 2.0 feature) 10110 10111Fixed a deadlock problem when multiple threads attempted to use 10112the interpreter. 10113 10114Fixed a problem where the string length of a String package 10115element was not always set in a package returned from 10116AcpiEvaluateObject. 10117 10118Fixed a problem where the length of a String package element was 10119not always included in the length of the overall package returned 10120from AcpiEvaluateObject. 10121 10122Added external interfaces (Acpi*) to the ACPI debug memory 10123manager. This manager keeps a list of all outstanding 10124allocations, and can therefore detect memory leaks and attempts to 10125free memory blocks more than once. Useful for code such as the 10126power manager, etc. May not be appropriate for device drivers. 10127Performance with the debug code enabled is slow. 10128 10129The ACPI Global Lock is now an optional hardware element. 10130 10131 ASL Compiler Version X2015: 10132 10133Integrated changes to allow the compiler to be generated on 10134multiple platforms. 10135 10136Linux makefile added to generate the compiler on Linux 10137 10138 Source Code: 10139 10140All platform-specific headers have been moved to their own 10141subdirectory, Include/Platform. 10142 10143New source file added, Interpreter/ammutex.c 10144 10145New header file, Include/acstruct.h 10146 10147 Documentation: 10148 10149The programmer reference has been updated for the following new 10150interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10151 10152 ------------------------------------------ 10153Summary of changes for this label: 02_08_01 10154 10155Core ACPI CA Subsystem: Fixed a problem where an error was 10156incorrectly returned if the return resource buffer was larger than 10157the actual data (in the resource interfaces). 10158 10159References to named objects within packages are resolved to the 10160 10161full pathname string before packages are returned directly (via 10162the AcpiEvaluateObject interface) or indirectly via the resource 10163interfaces. 10164 10165Linux OS Services Layer (OSL): 10166 10167Improved /proc battery interface. 10168 10169 10170Added C-state debugging output and other miscellaneous fixes. 10171 10172ASL Compiler Version X2014: 10173 10174All defined method arguments can now be used as local variables, 10175including the ones that are not actually passed in as parameters. 10176The compiler tracks initialization of the arguments and issues an 10177exception if they are used without prior assignment (just like 10178locals). 10179 10180The -o option now specifies a filename prefix that is used for all 10181output files, including the AML output file. Otherwise, the 10182default behavior is as follows: 1) the AML goes to the file 10183specified in the DSDT. 2) all other output files use the input 10184source filename as the base. 10185 10186 ------------------------------------------ 10187Summary of changes for this label: 01_25_01 10188 10189Core ACPI CA Subsystem: Restructured the implementation of object 10190store support within the interpreter. This includes support for 10191the Store operator as well as any ASL operators that include a 10192target operand. 10193 10194Partially implemented support for Implicit Result-to-Target 10195conversion. This is when a result object is converted on the fly 10196to the type of an existing target object. Completion of this 10197support is pending further analysis of the ACPI specification 10198concerning this matter. 10199 10200CPU-specific code has been removed from the subsystem (hardware 10201directory). 10202 10203New Power Management Timer functions added 10204 10205Linux OS Services Layer (OSL): Moved system state transition code 10206to the core, fixed it, and modified Linux OSL accordingly. 10207 10208Fixed C2 and C3 latency calculations. 10209 10210 10211We no longer use the compilation date for the version message on 10212initialization, but retrieve the version from AcpiGetSystemInfo(). 10213 10214Incorporated for fix Sony VAIO machines. 10215 10216Documentation: The Programmer Reference has been updated and 10217reformatted. 10218 10219 10220ASL Compiler: Version X2013: Fixed a problem where the line 10221numbering and error reporting could get out of sync in the 10222presence of multiple include files. 10223 10224 ------------------------------------------ 10225Summary of changes for this label: 01_15_01 10226 10227Core ACPI CA Subsystem: 10228 10229Implemented support for type conversions in the execution of the 10230ASL Concatenate operator (The second operand is converted to 10231match the type of the first operand before concatenation.) 10232 10233Support for implicit source operand conversion is partially 10234implemented. The ASL source operand types Integer, Buffer, and 10235String are freely interchangeable for most ASL operators and are 10236converted by the interpreter on the fly as required. Implicit 10237Target operand conversion (where the result is converted to the 10238target type before storing) is not yet implemented. 10239 10240Support for 32-bit and 64-bit BCD integers is implemented. 10241 10242Problem fixed where a field read on an aligned field could cause a 10243read past the end of the field. 10244 10245New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10246does not return a value, but the caller expects one. (The ASL 10247compiler flags this as a warning.) 10248 10249ASL Compiler: 10250 10251Version X2011: 102521. Static typechecking of all operands is implemented. This 10253prevents the use of invalid objects (such as using a Package where 10254an Integer is required) at compile time instead of at interpreter 10255run-time. 102562. The ASL source line is printed with ALL errors and warnings. 102573. Bug fix for source EOF without final linefeed. 102584. Debug option is split into a parse trace and a namespace trace. 102595. Namespace output option (-n) includes initial values for 10260integers and strings. 102616. Parse-only option added for quick syntax checking. 102627. Compiler checks for duplicate ACPI name declarations 10263 10264Version X2012: 102651. Relaxed typechecking to allow interchangeability between 10266strings, integers, and buffers. These types are now converted by 10267the interpreter at runtime. 102682. Compiler reports time taken by each internal subsystem in the 10269debug output file. 10270 10271 10272 ------------------------------------------ 10273Summary of changes for this label: 12_14_00 10274 10275ASL Compiler: 10276 10277This is the first official release of the compiler. Since the 10278compiler requires elements of the Core Subsystem, this label 10279synchronizes everything. 10280 10281------------------------------------------ 10282Summary of changes for this label: 12_08_00 10283 10284 10285Fixed a problem where named references within the ASL definition 10286of both OperationRegions and CreateXXXFields did not work 10287properly. The symptom was an AE_AML_OPERAND_TYPE during 10288initialization of the region/field. This is similar (but not 10289related internally) to the problem that was fixed in the last 10290label. 10291 10292Implemented both 32-bit and 64-bit support for the BCD ASL 10293functions ToBCD and FromBCD. 10294 10295Updated all legal headers to include "2000" in the copyright 10296years. 10297 10298 ------------------------------------------ 10299Summary of changes for this label: 12_01_00 10300 10301Fixed a problem where method invocations within the ASL definition 10302of both OperationRegions and CreateXXXFields did not work 10303properly. The symptom was an AE_AML_OPERAND_TYPE during 10304initialization of the region/field: 10305 10306 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10307[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10308(0x3005) 10309 10310Fixed a problem where operators with more than one nested 10311subexpression would fail. The symptoms were varied, by mostly 10312AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10313problem that has gone unnoticed until now. 10314 10315 Subtract (Add (1,2), Multiply (3,4)) 10316 10317Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10318previous build (The prefix part of a relative path was handled 10319incorrectly). 10320 10321Fixed a problem where Operation Region initialization failed if 10322the operation region name was a "namepath" instead of a simple 10323"nameseg". Symptom was an AE_NO_OPERAND error. 10324 10325Fixed a problem where an assignment to a local variable via the 10326indirect RefOf mechanism only worked for the first such 10327assignment. Subsequent assignments were ignored. 10328 10329 ------------------------------------------ 10330Summary of changes for this label: 11_15_00 10331 10332ACPI 2.0 table support with backwards support for ACPI 1.0 and the 103330.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10334the AML interpreter does NOT have support for the new 2.0 ASL 10335grammar terms at this time. 10336 10337All ACPI hardware access is via the GAS structures in the ACPI 2.0 10338FADT. 10339 10340All physical memory addresses across all platforms are now 64 bits 10341wide. Logical address width remains dependent on the platform 10342(i.e., "void *"). 10343 10344AcpiOsMapMemory interface changed to a 64-bit physical address. 10345 10346The AML interpreter integer size is now 64 bits, as per the ACPI 103472.0 specification. 10348 10349For backwards compatibility with ACPI 1.0, ACPI tables with a 10350revision number less than 2 use 32-bit integers only. 10351 10352Fixed a problem where the evaluation of OpRegion operands did not 10353always resolve them to numbers properly. 10354 10355------------------------------------------ 10356Summary of changes for this label: 10_20_00 10357 10358Fix for CBN_._STA issue. This fix will allow correct access to 10359CBN_ OpRegions when the _STA returns 0x8. 10360 10361Support to convert ACPI constants (Ones, Zeros, One) to actual 10362values before a package object is returned 10363 10364Fix for method call as predicate to if/while construct causing 10365incorrect if/while behavior 10366 10367Fix for Else block package lengths sometimes calculated wrong (if 10368block > 63 bytes) 10369 10370Fix for Processor object length field, was always zero 10371 10372Table load abort if FACP sanity check fails 10373 10374Fix for problem with Scope(name) if name already exists 10375 10376Warning emitted if a named object referenced cannot be found 10377(resolved) during method execution. 10378 10379 10380 10381 10382 10383------------------------------------------ 10384Summary of changes for this label: 9_29_00 10385 10386New table initialization interfaces: AcpiInitializeSubsystem no 10387longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10388necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10389>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10390AcpiLoadTables 10391 10392Note: These interface changes require changes to all existing OSDs 10393 10394The PCI_Config default address space handler is always installed 10395at the root namespace object. 10396 10397------------------------------------------- 10398Summary of changes for this label: 09_15_00 10399 10400The new initialization architecture is implemented. New 10401interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10402AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10403 10404(Namespace is automatically loaded when a table is loaded) 10405 10406The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1040752 bytes to 32 bytes. There is usually one of these for every 10408namespace object, so the memory savings is significant. 10409 10410Implemented just-in-time evaluation of the CreateField operators. 10411 10412Bug fixes for IA-64 support have been integrated. 10413 10414Additional code review comments have been implemented 10415 10416The so-called "third pass parse" has been replaced by a final walk 10417through the namespace to initialize all operation regions (address 10418spaces) and fields that have not yet been initialized during the 10419execution of the various _INI and REG methods. 10420 10421New file - namespace/nsinit.c 10422 10423------------------------------------------- 10424Summary of changes for this label: 09_01_00 10425 10426Namespace manager data structures have been reworked to change the 10427primary object from a table to a single object. This has 10428resulted in dynamic memory savings of 3X within the namespace and 104292X overall in the ACPI CA subsystem. 10430 10431Fixed problem where the call to AcpiEvFindPciRootBuses was 10432inadvertently left commented out. 10433 10434Reduced the warning count when generating the source with the GCC 10435compiler. 10436 10437Revision numbers added to each module header showing the 10438SourceSafe version of the file. Please refer to this version 10439number when giving us feedback or comments on individual modules. 10440 10441The main object types within the subsystem have been renamed to 10442clarify their purpose: 10443 10444ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10445ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10446ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10447 10448NOTE: no changes to the initialization sequence are included in 10449this label. 10450 10451------------------------------------------- 10452Summary of changes for this label: 08_23_00 10453 10454Fixed problem where TerminateControlMethod was being called 10455multiple times per method 10456 10457Fixed debugger problem where single stepping caused a semaphore to 10458be oversignalled 10459 10460Improved performance through additional parse object caching - 10461added ACPI_EXTENDED_OP type 10462 10463------------------------------------------- 10464Summary of changes for this label: 08_10_00 10465 10466Parser/Interpreter integration: Eliminated the creation of 10467complete parse trees for ACPI tables and control methods. 10468Instead, parse subtrees are created and then deleted as soon as 10469they are processed (Either entered into the namespace or executed 10470by the interpreter). This reduces the use of dynamic kernel 10471memory significantly. (about 10X) 10472 10473Exception codes broken into classes and renumbered. Be sure to 10474recompile all code that includes acexcep.h. Hopefully we won't 10475have to renumber the codes again now that they are split into 10476classes (environment, programmer, AML code, ACPI table, and 10477internal). 10478 10479Fixed some additional alignment issues in the Resource Manager 10480subcomponent 10481 10482Implemented semaphore tracking in the AcpiExec utility, and fixed 10483several places where mutexes/semaphores were being unlocked 10484without a corresponding lock operation. There are no known 10485semaphore or mutex "leaks" at this time. 10486 10487Fixed the case where an ASL Return operator is used to return an 10488unnamed package. 10489 10490------------------------------------------- 10491Summary of changes for this label: 07_28_00 10492 10493Fixed a problem with the way addresses were calculated in 10494AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10495manifested itself when a Field was created with WordAccess or 10496DwordAccess, but the field unit defined within the Field was less 10497 10498than a Word or Dword. 10499 10500Fixed a problem in AmlDumpOperands() module's loop to pull 10501operands off of the operand stack to display information. The 10502problem manifested itself as a TLB error on 64-bit systems when 10503accessing an operand stack with two or more operands. 10504 10505Fixed a problem with the PCI configuration space handlers where 10506context was getting confused between accesses. This required a 10507change to the generic address space handler and address space 10508setup definitions. Handlers now get both a global handler context 10509(this is the one passed in by the user when executing 10510AcpiInstallAddressSpaceHandler() and a specific region context 10511that is unique to each region (For example, the _ADR, _SEG and 10512_BBN values associated with a specific region). The generic 10513function definitions have changed to the following: 10514 10515typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10516UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10517*HandlerContext, // This used to be void *Context void 10518*RegionContext); // This is an additional parameter 10519 10520typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10521RegionHandle, UINT32 Function, void *HandlerContext, void 10522**RegionContext); // This used to be **ReturnContext 10523 10524------------------------------------------- 10525Summary of changes for this label: 07_21_00 10526 10527Major file consolidation and rename. All files within the 10528interpreter have been renamed as well as most header files. This 10529was done to prevent collisions with existing files in the host 10530OSs -- filenames such as "config.h" and "global.h" seem to be 10531quite common. The VC project files have been updated. All 10532makefiles will require modification. 10533 10534The parser/interpreter integration continues in Phase 5 with the 10535implementation of a complete 2-pass parse (the AML is parsed 10536twice) for each table; This avoids the construction of a huge 10537parse tree and therefore reduces the amount of dynamic memory 10538required by the subsystem. Greater use of the parse object cache 10539means that performance is unaffected. 10540 10541Many comments from the two code reviews have been rolled in. 10542 10543The 64-bit alignment support is complete. 10544 10545------------------------------------------- 10546Summary of changes for this label: 06_30_00 10547 10548With a nod and a tip of the hat to the technology of yesteryear, 10549we've added support in the source code for 80 column output 10550devices. The code is now mostly constrained to 80 columns or 10551less to support environments and editors that 1) cannot display 10552or print more than 80 characters on a single line, and 2) cannot 10553disable line wrapping. 10554 10555A major restructuring of the namespace data structure has been 10556completed. The result is 1) cleaner and more 10557understandable/maintainable code, and 2) a significant reduction 10558in the dynamic memory requirement for each named ACPI object 10559(almost half). 10560 10561------------------------------------------- 10562Summary of changes for this label: 06_23_00 10563 10564Linux support has been added. In order to obtain approval to get 10565the ACPI CA subsystem into the Linux kernel, we've had to make 10566quite a few changes to the base subsystem that will affect all 10567users (all the changes are generic and OS- independent). The 10568effects of these global changes have been somewhat far reaching. 10569Files have been merged and/or renamed and interfaces have been 10570renamed. The major changes are described below. 10571 10572Osd* interfaces renamed to AcpiOs* to eliminate namespace 10573pollution/confusion within our target kernels. All OSD 10574interfaces must be modified to match the new naming convention. 10575 10576Files merged across the subsystem. A number of the smaller source 10577and header files have been merged to reduce the file count and 10578increase the density of the existing files. There are too many 10579to list here. In general, makefiles that call out individual 10580files will require rebuilding. 10581 10582Interpreter files renamed. All interpreter files now have the 10583prefix am* instead of ie* and is*. 10584 10585Header files renamed: The acapi.h file is now acpixf.h. The 10586acpiosd.h file is now acpiosxf.h. We are removing references to 10587the acronym "API" since it is somewhat windowsy. The new name is 10588"external interface" or xface or xf in the filenames.j 10589 10590 10591All manifest constants have been forced to upper case (some were 10592mixed case.) Also, the string "ACPI_" has been prepended to many 10593(not all) of the constants, typedefs, and structs. 10594 10595The globals "DebugLevel" and "DebugLayer" have been renamed 10596"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10597 10598All other globals within the subsystem are now prefixed with 10599"AcpiGbl_" Internal procedures within the subsystem are now 10600prefixed with "Acpi" (with only a few exceptions). The original 10601two-letter abbreviation for the subcomponent remains after "Acpi" 10602- for example, CmCallocate became AcpiCmCallocate. 10603 10604Added a source code translation/conversion utility. Used to 10605generate the Linux source code, it can be modified to generate 10606other types of source as well. Can also be used to cleanup 10607existing source by removing extraneous spaces and blank lines. 10608Found in tools/acpisrc/* 10609 10610OsdUnMapMemory was renamed to OsdUnmapMemory and then 10611AcpiOsUnmapMemory. (UnMap became Unmap). 10612 10613A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10614When set to one, this indicates that the caller wants to use the 10615 10616semaphore as a mutex, not a counting semaphore. ACPI CA uses 10617both types. However, implementers of this call may want to use 10618different OS primitives depending on the type of semaphore 10619requested. For example, some operating systems provide separate 10620 10621"mutex" and "semaphore" interfaces - where the mutex interface is 10622much faster because it doesn't have all the overhead of a full 10623semaphore implementation. 10624 10625Fixed a deadlock problem where a method that accesses the PCI 10626address space can block forever if it is the first access to the 10627space. 10628 10629------------------------------------------- 10630Summary of changes for this label: 06_02_00 10631 10632Support for environments that cannot handle unaligned data 10633accesses (e.g. firmware and OS environments devoid of alignment 10634handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10635been added (via configurable macros) in these three areas: - 10636Transfer of data from the raw AML byte stream is done via byte 10637moves instead of word/dword/qword moves. - External objects are 10638aligned within the user buffer, including package elements (sub- 10639objects). - Conversion of name strings to UINT32 Acpi Names is now 10640done byte-wise. 10641 10642The Store operator was modified to mimic Microsoft's 10643implementation when storing to a Buffer Field. 10644 10645Added a check of the BM_STS bit before entering C3. 10646 10647The methods subdirectory has been obsoleted and removed. A new 10648file, cmeval.c subsumes the functionality. 10649 10650A 16-bit (DOS) version of AcpiExec has been developed. The 10651makefile is under the acpiexec directory. 10652