changes.txt revision 220663
1---------------------------------------- 213 April 2011. Summary of changes for version 20110413: 3 41) ACPI CA Core Subsystem: 5 6Implemented support to execute a so-called "orphan" _REG method under the EC 7device. This change will force the execution of a _REG method underneath the EC 8device even if there is no corresponding operation region of type 9EmbeddedControl. Fixes a problem seen on some machines and apparently is 10compatible with Windows behavior. ACPICA BZ 875. 11 12Added more predefined methods that are eligible for automatic NULL package 13element removal. This change adds another group of predefined names to the list 14of names that can be repaired by having NULL package elements dynamically 15removed. This group are those methods that return a single variable-length 16package containing simple data types such as integers, buffers, strings. This 17includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL, _Sx, 18and _TZD. ACPICA BZ 914. 19 20Split and segregated all internal global lock functions to a new file, evglock.c. 21 22Updated internal address SpaceID for DataTable regions. Moved this internal space 23id in preparation for ACPI 5.0 changes that will include some new space IDs. This 24change should not affect user/host code. 25 26Example Code and Data Size: These are the sizes for the OS-independent acpica.lib 27produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 28the code includes the debug output trace mechanism and has a much larger code and 29data size. 30 31 Previous Release (VC 9.0): 32 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 33 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 34 Current Release (VC 9.0): 35 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total 36 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total 37 382) iASL Compiler/Disassembler and Tools: 39 40iASL/DTC: Major update for new grammar features. Allow generic data types in 41custom ACPI tables. Field names are now optional. Any line can be split to 42multiple lines using the continuation char (\). Large buffers now use line- 43continuation character(s) and no colon on the continuation lines. See the grammar 44update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore. 45 46iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements. 47Since the parser stuffs a "zero" as the return value for these statements (due to 48the underlying AML grammar), they were seen as "return with value" by the iASL 49semantic checking. They are now seen correctly as "null" return statements. 50 51iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a 52check for each _REG to ensure that there is in fact a corresponding operation 53region declaration in the same scope. If not, the _REG method is not very useful 54since it probably won't be executed. ACPICA BZ 915. 55 56iASL/DTC: Finish support for expression evaluation. Added a new expression parser 57that implements c-style operator precedence and parenthesization. ACPICA bugzilla 58908. 59 60Disassembler/DTC: Remove support for () and <> style comments in data tables. Now 61that DTC has full expression support, we don't want to have comment strings that 62start with a parentheses or a less-than symbol. Now, only the standard /* and // 63comments are supported, as well as the bracket [] comments. 64 65AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have "unusual" 66headers in the acpidump file. Update the header validation to support these 67tables. Problem introduced in previous AcpiXtract version in the change to 68support "wrong checksum" error messages emitted by acpidump utility. 69 70iASL: Add a * option to generate all template files (as a synonym for ALL) as in 71"iasl -T *" or "iasl -T ALL". 72 73iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely 74abort the compiler on "fatal" errors, simply should abort the current compile. 75This allows multiple compiles with a single (possibly wildcard) compiler 76invocation. 77 78---------------------------------------- 7916 March 2011. Summary of changes for version 20110316: 80 811) ACPI CA Core Subsystem: 82 83Fixed a problem caused by a _PRW method appearing at the namespace root scope 84during the setup of wake GPEs. A fault could occur if a _PRW directly under the 85root object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 86 87Implemented support for "spurious" Global Lock interrupts. On some systems, a 88global lock interrupt can occur without the pending flag being set. Upon a GL 89interrupt, we now ensure that a thread is actually waiting for the lock before 90signaling GL availability. Rafael Wysocki, Bob Moore. 91 92Example Code and Data Size: These are the sizes for the OS-independent acpica.lib 93produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 94the code includes the debug output trace mechanism and has a much larger code and 95data size. 96 97 Previous Release (VC 9.0): 98 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 99 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 100 Current Release (VC 9.0): 101 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 102 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 103 1042) iASL Compiler/Disassembler and Tools: 105 106Implemented full support for the "SLIC" ACPI table. Includes support in the 107header files, disassembler, table compiler, and template generator. Bob Moore, 108Lin Ming. 109 110AcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 111Apparently some or all versions of acpidump will occasionally emit a comment like 112"Wrong checksum", etc., into the dump file. This was causing problems for 113AcpiXtract. ACPICA BZ 905. 114 115iASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 116ACPICA BZ 913. 117 118AcpiExec: Update installation of operation region handlers. Install one handler 119for a user-defined address space. This is used by the ASL test suite (ASLTS). 120 121---------------------------------------- 12211 February 2011. Summary of changes for version 20110211: 123 1241) ACPI CA Core Subsystem: 125 126Added a mechanism to defer _REG methods for some early-installed handlers. 127Most user handlers should be installed before call to AcpiEnableSubsystem. 128However, Event handlers and region handlers should be installed after 129AcpiInitializeObjects. Override handlers for the "default" regions should be 130installed early, however. This change executes all _REG methods for the 131default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 132chicken/egg issues between them. ACPICA BZ 848. 133 134Implemented an optimization for GPE detection. This optimization will simply 135ignore GPE registers that contain no enabled GPEs -- there is no need to 136read the register since this information is available internally. This 137becomes more important on machines with a large GPE space. ACPICA bugzilla 138884. Lin Ming. Suggestion from Joe Liu. 139 140Removed all use of the highly unreliable FADT revision field. The revision 141number in the FADT has been found to be completely unreliable and cannot be 142trusted. Only the actual table length can be used to infer the version. This 143change updates the ACPICA core and the disassembler so that both no longer 144even look at the FADT version and instead depend solely upon the FADT 145length. 146 147Fix an unresolved name issue for the no-debug and no-error-message source 148generation cases. The _AcpiModuleName was left undefined in these cases, but 149it is actually needed as a parameter to some interfaces. Define 150_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 151 152Split several large files (makefiles and project files updated) 153 utglobal.c -> utdecode.c 154 dbcomds.c -> dbmethod.c dbnames.c 155 dsopcode.c -> dsargs.c dscontrol.c 156 dsload.c -> dsload2.c 157 aslanalyze.c -> aslbtypes.c aslwalks.c 158 159Example Code and Data Size: These are the sizes for the OS-independent 160acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 161debug version of the code includes the debug output trace mechanism and has 162a much larger code and data size. 163 164 Previous Release (VC 9.0): 165 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 166 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 167 Current Release (VC 9.0): 168 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 169 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 170 1712) iASL Compiler/Disassembler and Tools: 172 173iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 174These are useful C-style macros with the standard definitions. ACPICA 175bugzilla 898. 176 177iASL/DTC: Added support for integer expressions and labels. Support for full 178expressions for all integer fields in all ACPI tables. Support for labels in 179"generic" portions of tables such as UEFI. See the iASL reference manual. 180 181Debugger: Added a command to display the status of global handlers. The 182"handlers" command will display op region, fixed event, and miscellaneous 183global handlers. installation status -- and for op regions, whether default 184or user-installed handler will be used. 185 186iASL: Warn if reserved method incorrectly returns a value. Many predefined 187names are defined such that they do not return a value. If implemented as a 188method, issue a warning if such a name explicitly returns a value. ACPICA 189Bugzilla 855. 190 191iASL: Added detection of GPE method name conflicts. Detects a conflict where 192there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 193example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 194 195iASL/DTC: Fixed a couple input scanner issues with comments and line 196numbers. Comment remover could get confused and miss a comment ending. Fixed 197a problem with line counter maintenance. 198 199iASL/DTC: Reduced the severity of some errors from fatal to error. There is 200no need to abort on simple errors within a field definition. 201 202Debugger: Simplified the output of the help command. All help output now in 203a single screen, instead of help subcommands. ACPICA Bugzilla 897. 204 205---------------------------------------- 20612 January 2011. Summary of changes for version 20110112: 207 2081) ACPI CA Core Subsystem: 209 210Fixed a race condition between method execution and namespace walks that can 211possibly cause a fault. The problem was apparently introduced in version 21220100528 as a result of a performance optimization that reduces the number of 213namespace walks upon method exit by using the delete_namespace_subtree 214function instead of the delete_namespace_by_owner function used previously. 215Bug is a missing namespace lock in the delete_namespace_subtree function. 216dana.myers@oracle.com 217 218Fixed several issues and a possible fault with the automatic "serialized" 219method support. History: This support changes a method to "serialized" on the 220fly if the method generates an AE_ALREADY_EXISTS error, indicating the 221possibility that it cannot handle reentrancy. This fix repairs a couple of 222issues seen in the field, especially on machines with many cores: 223 224 1) Delete method children only upon the exit of the last thread, 225 so as to not delete objects out from under other running threads 226 (and possibly causing a fault.) 227 2) Set the "serialized" bit for the method only upon the exit of the 228 Last thread, so as to not cause deadlock when running threads 229 attempt to exit. 230 3) Cleanup the use of the AML "MethodFlags" and internal method flags 231 so that there is no longer any confusion between the two. 232 233 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 234 235Debugger: Now lock the namespace for duration of a namespace dump. Prevents 236issues if the namespace is changing dynamically underneath the debugger. 237Especially affects temporary namespace nodes, since the debugger displays 238these also. 239 240Updated the ordering of include files. The ACPICA headers should appear 241before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 242any necessary compiler-specific defines, etc. Affects the ACPI-related tools 243and utilities. 244 245Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 246to all module headers and signons, including the Linux header. This affects 247virtually every file in the ACPICA core subsystem, iASL compiler, and all 248utilities. 249 250Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 251project files for VC++ 6.0 are now obsolete. New project files can be found 252under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 253details. 254 255Example Code and Data Size: These are the sizes for the OS-independent 256acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 257debug version of the code includes the debug output trace mechanism and has a 258much larger code and data size. 259 260 Previous Release (VC 6.0): 261 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 262 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 263 Current Release (VC 9.0): 264 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 265 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 266 2672) iASL Compiler/Disassembler and Tools: 268 269iASL: Added generic data types to the Data Table compiler. Add "generic" data 270types such as UINT32, String, Unicode, etc., to simplify the generation of 271platform-defined tables such as UEFI. Lin Ming. 272 273iASL: Added listing support for the Data Table Compiler. Adds listing support 274(-l) to display actual binary output for each line of input code. 275 276---------------------------------------- 27709 December 2010. Summary of changes for version 20101209: 278 2791) ACPI CA Core Subsystem: 280 281Completed the major overhaul of the GPE support code that was begun in July 2822010. Major features include: removal of _PRW execution in ACPICA (host 283executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 284changes to existing interfaces, simplification of GPE handler operation, and 285a handful of new interfaces: 286 287 AcpiUpdateAllGpes 288 AcpiFinishGpe 289 AcpiSetupGpeForWake 290 AcpiSetGpeWakeMask 291 One new file, evxfgpe.c to consolidate all external GPE interfaces. 292 293See the ACPICA Programmer Reference for full details and programming 294information. See the new section 4.4 "General Purpose Event (GPE) Support" 295for a full overview, and section 8.7 "ACPI General Purpose Event Management" 296for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 297Bob Moore, Rafael Wysocki. 298 299Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 300GPE Notify". This feature will automatically issue a Notify(2) on a device 301when a Wake GPE is received if there is no corresponding GPE method or 302handler. ACPICA BZ 870. 303 304Fixed a problem with the Scope() operator during table parse and load phase. 305During load phase (table load or method execution), the scope operator should 306not enter the target into the namespace. Instead, it should open a new scope 307at the target location. Linux BZ 19462, ACPICA BZ 882. 308 309Example Code and Data Size: These are the sizes for the OS-independent 310acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 311debug version of the code includes the debug output trace mechanism and has a 312much larger code and data size. 313 314 Previous Release: 315 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 316 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 317 Current Release: 318 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 319 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 320 3212) iASL Compiler/Disassembler and Tools: 322 323iASL: Relax the alphanumeric restriction on _CID strings. These strings are 324"bus-specific" per the ACPI specification, and therefore any characters are 325acceptable. The only checks that can be performed are for a null string and 326perhaps for a leading asterisk. ACPICA BZ 886. 327 328iASL: Fixed a problem where a syntax error that caused a premature EOF 329condition on the source file emitted a very confusing error message. The 330premature EOF is now detected correctly. ACPICA BZ 891. 331 332Disassembler: Decode the AccessSize within a Generic Address Structure (byte 333access, word access, etc.) Note, this field does not allow arbitrary bit 334access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 335 336New: AcpiNames utility - Example namespace dump utility. Shows an example of 337ACPICA configuration for a minimal namespace dump utility. Uses table and 338namespace managers, but no AML interpreter. Does not add any functionality 339over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 340partition and configure ACPICA. ACPICA BZ 883. 341 342AML Debugger: Increased the debugger buffer size for method return objects. 343Was 4K, increased to 16K. Also enhanced error messages for debugger method 344execution, including the buffer overflow case. 345 346---------------------------------------- 34713 October 2010. Summary of changes for version 20101013: 348 3491) ACPI CA Core Subsystem: 350 351Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 352clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 353HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 354 355Changed the type of the predefined namespace object _TZ from ThermalZone to 356Device. This was found to be confusing to the host software that processes 357the various thermal zones, since _TZ is not really a ThermalZone. However, a 358Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 359Zhang. 360 361Added Windows Vista SP2 to the list of supported _OSI strings. The actual 362string is "Windows 2006 SP2". 363 364Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 365code automatically repairs _HID-related strings, this type of code is no 366longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 367 368Example Code and Data Size: These are the sizes for the OS-independent 369acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 370debug version of the code includes the debug output trace mechanism and has a 371much larger code and data size. 372 373 Previous Release: 374 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 375 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 376 Current Release: 377 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 378 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 379 3802) iASL Compiler/Disassembler and Tools: 381 382iASL: Implemented additional compile-time validation for _HID strings. The 383non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 384the string must be exactly seven or eight characters. For both _HID and _CID 385strings, all characters must be alphanumeric. ACPICA BZ 874. 386 387iASL: Allow certain "null" resource descriptors. Some BIOS code creates 388descriptors that are mostly or all zeros, with the expectation that they will 389be filled in at runtime. iASL now allows this as long as there is a "resource 390tag" (name) associated with the descriptor, which gives the ASL a handle 391needed to modify the descriptor. ACPICA BZ 873. 392 393Added single-thread support to the generic Unix application OSL. Primarily 394for iASL support, this change removes the use of semaphores in the single- 395threaded ACPICA tools/applications - increasing performance. The 396_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 397option. ACPICA BZ 879. 398 399AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 400for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 401 402iASL: Moved all compiler messages to a new file, aslmessages.h. 403 404---------------------------------------- 40515 September 2010. Summary of changes for version 20100915: 406 4071) ACPI CA Core Subsystem: 408 409Removed the AcpiOsDerivePciId OSL interface. The various host implementations 410of this function were not OS-dependent and are now obsolete and can be 411removed from all host OSLs. This function has been replaced by 412AcpiHwDerivePciId, which is now part of the ACPICA core code. 413AcpiHwDerivePciId has been implemented without recursion. Adds one new 414module, hwpci.c. ACPICA BZ 857. 415 416Implemented a dynamic repair for _HID and _CID strings. The following 417problems are now repaired at runtime: 1) Remove a leading asterisk in the 418string, and 2) the entire string is uppercased. Both repairs are in 419accordance with the ACPI specification and will simplify host driver code. 420ACPICA BZ 871. 421 422The ACPI_THREAD_ID type is no longer configurable, internally it is now 423always UINT64. This simplifies the ACPICA code, especially any printf output. 424UINT64 is the only common data type for all thread_id types across all 425operating systems. It is now up to the host OSL to cast the native thread_id 426type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 427Lin Ming, Bob Moore. 428 429Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 430keyword is not standard across compilers, and this type allows inline to be 431configured on a per-compiler basis. Lin Ming. 432 433Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 434Added an extern for this boolean in acpixf.h. Some hosts utilize this value 435during suspend/restore operations. ACPICA BZ 869. 436 437All code that implements error/warning messages with the "ACPI:" prefix has 438been moved to a new module, utxferror.c. 439 440The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 441is used. ACPICA BZ 829. Lin Ming, Bob Moore. 442 443Example Code and Data Size: These are the sizes for the OS-independent 444acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 445debug version of the code includes the debug output trace mechanism and has a 446much larger code and data size. 447 448 Previous Release: 449 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 450 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 451 Current Release: 452 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 453 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 454 4552) iASL Compiler/Disassembler and Tools: 456 457iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 458This keeps the output files free of random error messages that may originate 459from within the namespace/interpreter code. Used this opportunity to merge 460all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 461866. Lin Ming, Bob Moore. 462 463Tools: update some printfs for ansi warnings on size_t. Handle width change 464of size_t on 32-bit versus 64-bit generations. Lin Ming. 465 466---------------------------------------- 46706 August 2010. Summary of changes for version 20100806: 468 4691) ACPI CA Core Subsystem: 470 471Designed and implemented a new host interface to the _OSI support code. This 472will allow the host to dynamically add or remove multiple _OSI strings, as 473well as install an optional handler that is called for each _OSI invocation. 474Also added a new AML debugger command, 'osi' to display and modify the global 475_OSI string table, and test support in the AcpiExec utility. See the ACPICA 476reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 477New Functions: 478 AcpiInstallInterface - Add an _OSI string. 479 AcpiRemoveInterface - Delete an _OSI string. 480 AcpiInstallInterfaceHandler - Install optional _OSI handler. 481Obsolete Functions: 482 AcpiOsValidateInterface - no longer used. 483New Files: 484 source/components/utilities/utosi.c 485 486Re-introduced the support to enable multi-byte transfers for Embedded 487Controller (EC) operation regions. A reported problem was found to be a bug 488in the host OS, not in the multi-byte support. Previously, the maximum data 489size passed to the EC operation region handler was a single byte. There are 490often EC Fields larger than one byte that need to be transferred, and it is 491useful for the EC driver to lock these as a single transaction. This change 492enables single transfers larger than 8 bits. This effectively changes the 493access to the EC space from ByteAcc to AnyAcc, and will probably require 494changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 495transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 496 497Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 498prototype in acpiosxf.h had the output value pointer as a (void *). 499It should be a (UINT64 *). This may affect some host OSL code. 500 501Fixed a couple problems with the recently modified Linux makefiles for iASL 502and AcpiExec. These new makefiles place the generated object files in the 503local directory so that there can be no collisions between the files that are 504shared between them that are compiled with different options. 505 506Example Code and Data Size: These are the sizes for the OS-independent 507acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 508debug version of the code includes the debug output trace mechanism and has a 509much larger code and data size. 510 511 Previous Release: 512 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 513 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 514 Current Release: 515 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 516 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 517 5182) iASL Compiler/Disassembler and Tools: 519 520iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 521namespace from and disassemble an entire group of AML files. Useful for 522loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 523disassembling with one simple command. ACPICA BZ 865. Lin Ming. 524 525iASL: Allow multiple invocations of -e option. This change allows multiple 526uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 527Lin Ming. 528 529---------------------------------------- 53002 July 2010. Summary of changes for version 20100702: 531 5321) ACPI CA Core Subsystem: 533 534Implemented several updates to the recently added GPE reference count 535support. The model for "wake" GPEs is changing to give the host OS complete 536control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 537methods, since the host already must execute them. Also, additional changes 538were made to help ensure that the reference counts are kept in proper 539synchronization with reality. Rafael J. Wysocki. 540 5411) Ensure that GPEs are not enabled twice during initialization. 5422) Ensure that GPE enable masks stay in sync with the reference count. 5433) Do not inadvertently enable GPEs when writing GPE registers. 5444) Remove the internal wake reference counter and add new AcpiGpeWakeup 545interface. This interface will set or clear individual GPEs for wakeup. 5465) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 547are now used for "runtime" GPEs only. 548 549Changed the behavior of the GPE install/remove handler interfaces. The GPE is 550no longer disabled during this process, as it was found to cause problems on 551some machines. Rafael J. Wysocki. 552 553Reverted a change introduced in version 20100528 to enable Embedded 554Controller multi-byte transfers. This change was found to cause problems with 555Index Fields and possibly Bank Fields. It will be reintroduced when these 556problems have been resolved. 557 558Fixed a problem with references to Alias objects within Package Objects. A 559reference to an Alias within the definition of a Package was not always 560resolved properly. Aliases to objects like Processors, Thermal zones, etc. 561were resolved to the actual object instead of a reference to the object as it 562should be. Package objects are only allowed to contain integer, string, 563buffer, package, and reference objects. Redhat bugzilla 608648. 564 565Example Code and Data Size: These are the sizes for the OS-independent 566acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 567debug version of the code includes the debug output trace mechanism and has a 568much larger code and data size. 569 570 Previous Release: 571 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 572 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 573 Current Release: 574 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 575 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 576 5772) iASL Compiler/Disassembler and Tools: 578 579iASL: Implemented a new compiler subsystem to allow definition and 580compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 581are called "ACPI Data Tables", and the new compiler is the "Data Table 582Compiler". This compiler is intended to simplify the existing error-prone 583process of creating these tables for the BIOS, as well as allowing the 584disassembly, modification, recompilation, and override of existing ACPI data 585tables. See the iASL User Guide for detailed information. 586 587iASL: Implemented a new Template Generator option in support of the new Data 588Table Compiler. This option will create examples of all known ACPI tables 589that can be used as the basis for table development. See the iASL 590documentation and the -T option. 591 592Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 593Descriptor Table). 594 595Updated the Linux makefiles for iASL and AcpiExec to place the generated 596object files in the local directory so that there can be no collisions 597between the shared files between them that are generated with different 598options. 599 600Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 601the #define __APPLE__ to enable this support. 602 603---------------------------------------- 60428 May 2010. Summary of changes for version 20100528: 605 606Note: The ACPI 4.0a specification was released on April 5, 2010 and is 607available at www.acpi.info. This is primarily an errata release. 608 6091) ACPI CA Core Subsystem: 610 611Undefined ACPI tables: We are looking for the definitions for the following 612ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 613 614Implemented support to enable multi-byte transfers for Embedded Controller 615(EC) operation regions. Previously, the maximum data size passed to the EC 616operation region handler was a single byte. There are often EC Fields larger 617than one byte that need to be transferred, and it is useful for the EC driver 618to lock these as a single transaction. This change enables single transfers 619larger than 8 bits. This effectively changes the access to the EC space from 620ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 621Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 622transfers. Alexey Starikovskiy, Lin Ming 623 624Implemented a performance enhancement for namespace search and access. This 625change enhances the performance of namespace searches and walks by adding a 626backpointer to the parent in each namespace node. On large namespaces, this 627change can improve overall ACPI performance by up to 9X. Adding a pointer to 628each namespace node increases the overall size of the internal namespace by 629about 5%, since each namespace entry usually consists of both a namespace 630node and an ACPI operand object. However, this is the first growth of the 631namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 632 633Implemented a performance optimization that reduces the number of namespace 634walks. On control method exit, only walk the namespace if the method is known 635to have created namespace objects outside of its local scope. Previously, the 636entire namespace was traversed on each control method exit. This change can 637improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 638 639Added support to truncate I/O addresses to 16 bits for Windows compatibility. 640Some ASL code has been seen in the field that inadvertently has bits set 641above bit 15. This feature is optional and is enabled if the BIOS requests 642any Windows OSI strings. It can also be enabled by the host OS. Matthew 643Garrett, Bob Moore. 644 645Added support to limit the maximum time for the ASL Sleep() operator. To 646prevent accidental deep sleeps, limit the maximum time that Sleep() will 647actually sleep. Configurable, the default maximum is two seconds. ACPICA 648bugzilla 854. 649 650Added run-time validation support for the _WDG and_WED Microsoft predefined 651methods. These objects are defined by "Windows Instrumentation", and are not 652part of the ACPI spec. ACPICA BZ 860. 653 654Expanded all statistic counters used during namespace and device 655initialization from 16 to 32 bits in order to support very large namespaces. 656 657Replaced all instances of %d in printf format specifiers with %u since nearly 658all integers in ACPICA are unsigned. 659 660Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 661as AE_NO_HANDLER. 662 663Example Code and Data Size: These are the sizes for the OS-independent 664acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 665debug version of the code includes the debug output trace mechanism and has a 666much larger code and data size. 667 668 Previous Release: 669 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 670 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 671 Current Release: 672 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 673 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 674 6752) iASL Compiler/Disassembler and Tools: 676 677iASL: Added compiler support for the _WDG and_WED Microsoft predefined 678methods. These objects are defined by "Windows Instrumentation", and are not 679part of the ACPI spec. ACPICA BZ 860. 680 681AcpiExec: added option to disable the memory tracking mechanism. The -dt 682option will disable the tracking mechanism, which improves performance 683considerably. 684 685AcpiExec: Restructured the command line options into -d (disable) and -e 686(enable) options. 687 688---------------------------------------- 68928 April 2010. Summary of changes for version 20100428: 690 6911) ACPI CA Core Subsystem: 692 693Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 694including FADT-based and GPE Block Devices, execute any _PRW methods in the 695new table, and process any _Lxx/_Exx GPE methods in the new table. Any 696runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 697immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 698Devices. Provides compatibility with other ACPI implementations. Two new 699files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 700 701Fixed a regression introduced in version 20100331 within the table manager 702where initial table loading could fail. This was introduced in the fix for 703AcpiReallocateRootTable. Also, renamed some of fields in the table manager 704data structures to clarify their meaning and use. 705 706Fixed a possible allocation overrun during internal object copy in 707AcpiUtCopySimpleObject. The original code did not correctly handle the case 708where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 709 710Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 711possible access beyond end-of-allocation. Also, now fully validate descriptor 712(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 713 714Example Code and Data Size: These are the sizes for the OS-independent 715acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 716debug version of the code includes the debug output trace mechanism and has a 717much larger code and data size. 718 719 Previous Release: 720 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 721 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 722 Current Release: 723 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 724 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 725 7262) iASL Compiler/Disassembler and Tools: 727 728iASL: Implemented Min/Max/Len/Gran validation for address resource 729descriptors. This change implements validation for the address fields that 730are common to all address-type resource descriptors. These checks are 731implemented: Checks for valid Min/Max, length within the Min/Max window, 732valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 733table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 734and aslrestype2.c files into five new files. ACPICA BZ 840. 735 736iASL: Added support for the _Wxx predefined names. This support was missing 737and these names were not recognized by the compiler as valid predefined 738names. ACPICA BZ 851. 739 740iASL: Added an error for all predefined names that are defined to return no 741value and thus must be implemented as Control Methods. These include all of 742the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 743names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 744 745iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 746ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 747dynamically loaded via the Load() operator. Also cleaned up output for the - 748ta and -tc options. ACPICA BZ 853. 749 750Tests: Added a new file with examples of extended iASL error checking. 751Demonstrates the advanced error checking ability of the iASL compiler. 752Available at tests/misc/badcode.asl. 753 754---------------------------------------- 75531 March 2010. Summary of changes for version 20100331: 756 7571) ACPI CA Core Subsystem: 758 759Completed a major update for the GPE support in order to improve support for 760shared GPEs and to simplify both host OS and ACPICA code. Added a reference 761count mechanism to support shared GPEs that require multiple device drivers. 762Several external interfaces have changed. One external interface has been 763removed. One new external interface was added. Most of the GPE external 764interfaces now use the GPE spinlock instead of the events mutex (and the 765Flags parameter for many GPE interfaces has been removed.) See the updated 766ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 767Wysocki. ACPICA BZ 831. 768 769Changed: 770 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 771Removed: 772 AcpiSetGpeType 773New: 774 AcpiSetGpe 775 776Implemented write support for DataTable operation regions. These regions are 777defined via the DataTableRegion() operator. Previously, only read support was 778implemented. The ACPI specification allows DataTableRegions to be read/write, 779however. 780 781Implemented a new subsystem option to force a copy of the DSDT to local 782memory. Optionally copy the entire DSDT to local memory (instead of simply 783mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 784the original DSDT, creating the need for this option. Default is FALSE, do 785not copy the DSDT. 786 787Implemented detection of a corrupted or replaced DSDT. This change adds 788support to detect a DSDT that has been corrupted and/or replaced from outside 789the OS (by firmware). This is typically catastrophic for the system, but has 790been seen on some machines. Once this problem has been detected, the DSDT 791copy option can be enabled via system configuration. Lin Ming, Bob Moore. 792 793Fixed two problems with AcpiReallocateRootTable during the root table copy. 794When copying the root table to the new allocation, the length used was 795incorrect. The new size was used instead of the current table size, meaning 796too much data was copied. Also, the count of available slots for ACPI tables 797was not set correctly. Alexey Starikovskiy, Bob Moore. 798 799Example Code and Data Size: These are the sizes for the OS-independent 800acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 801debug version of the code includes the debug output trace mechanism and has a 802much larger code and data size. 803 804 Previous Release: 805 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 806 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 807 Current Release: 808 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 809 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 810 8112) iASL Compiler/Disassembler and Tools: 812 813iASL: Implement limited typechecking for values returned from predefined 814control methods. The type of any returned static (unnamed) object is now 815validated. For example, Return(1). ACPICA BZ 786. 816 817iASL: Fixed a predefined name object verification regression. Fixes a problem 818introduced in version 20100304. An error is incorrectly generated if a 819predefined name is declared as a static named object with a value defined 820using the keywords "Zero", "One", or "Ones". Lin Ming. 821 822iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 823reducing the requested registry access rights. ACPICA BZ 842. 824 825Disassembler: fixed a possible fault when generating External() statements. 826Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 827(carat). Fixes a string length allocation calculation. Lin Ming. 828 829---------------------------------------- 83004 March 2010. Summary of changes for version 20100304: 831 8321) ACPI CA Core Subsystem: 833 834Fixed a possible problem with the AML Mutex handling function 835AcpiExReleaseMutex where the function could fault under the very rare 836condition when the interpreter has blocked, the interpreter lock is released, 837the interpreter is then reentered via the same thread, and attempts to 838acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 839Ming. 840 841Implemented additional configuration support for the AML "Debug Object". 842Output from the debug object can now be enabled via a global variable, 843AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 844This debug output is now available in the release version of ACPICA instead 845of just the debug version. Also, the entire debug output module can now be 846configured out of the ACPICA build if desired. One new file added, 847executer/exdebug.c. Lin Ming, Bob Moore. 848 849Added header support for the ACPI MCHI table (Management Controller Host 850Interface Table). This table was added in ACPI 4.0, but the defining document 851has only recently become available. 852 853Standardized output of integer values for ACPICA warnings/errors. Always use 8540x prefix for hex output, always use %u for unsigned integer decimal output. 855Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 856invocations.) These invocations were converted from the original 857ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 858 859Example Code and Data Size: These are the sizes for the OS-independent 860acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 861debug version of the code includes the debug output trace mechanism and has a 862much larger code and data size. 863 864 Previous Release: 865 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 866 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 867 Current Release: 868 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 869 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 870 8712) iASL Compiler/Disassembler and Tools: 872 873iASL: Implemented typechecking support for static (non-control method) 874predefined named objects that are declared with the Name() operator. For 875example, the type of this object is now validated to be of type Integer: 876Name(_BBN, 1). This change migrates the compiler to using the core predefined 877name table instead of maintaining a local version. Added a new file, 878aslpredef.c. ACPICA BZ 832. 879 880Disassembler: Added support for the ACPI 4.0 MCHI table. 881 882---------------------------------------- 88321 January 2010. Summary of changes for version 20100121: 884 8851) ACPI CA Core Subsystem: 886 887Added the 2010 copyright to all module headers and signons. This affects 888virtually every file in the ACPICA core subsystem, the iASL compiler, the 889tools/utilities, and the test suites. 890 891Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 892invocations of the _STA method. In the case where a specific _HID is 893requested, do not run _STA until a _HID match is found. This eliminates 894potentially dozens of _STA calls during a search for a particular device/HID, 895which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 896 897Implemented an additional repair for predefined method return values. Attempt 898to repair unexpected NULL elements within returned Package objects. Create an 899Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 900ACPICA BZ 818. Lin Ming, Bob Moore. 901 902Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 903code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 90464-bit AML integers). It is now obsolete and this change removes it from the 905ACPICA code base, replaced by UINT64. The original typedef has been retained 906for now for compatibility with existing device driver code. ACPICA BZ 824. 907 908Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 909the parse tree object. 910 911Added additional warning options for the gcc-4 generation. Updated the source 912accordingly. This includes some code restructuring to eliminate unreachable 913code, elimination of some gotos, elimination of unused return values, some 914additional casting, and removal of redundant declarations. 915 916Example Code and Data Size: These are the sizes for the OS-independent 917acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 918debug version of the code includes the debug output trace mechanism and has a 919much larger code and data size. 920 921 Previous Release: 922 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 923 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 924 Current Release: 925 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 926 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 927 9282) iASL Compiler/Disassembler and Tools: 929 930No functional changes for this release. 931 932---------------------------------------- 93314 December 2009. Summary of changes for version 20091214: 934 9351) ACPI CA Core Subsystem: 936 937Enhanced automatic data type conversions for predefined name repairs. This 938change expands the automatic repairs/conversions for predefined name return 939values to make Integers, Strings, and Buffers fully interchangeable. Also, a 940Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 941module was completely restructured. Lin Ming, Bob Moore. 942 943Implemented automatic removal of null package elements during predefined name 944repairs. This change will automatically remove embedded and trailing NULL 945package elements from returned package objects that are defined to contain a 946variable number of sub-packages. The driver is then presented with a package 947with no null elements to deal with. ACPICA BZ 819. 948 949Implemented a repair for the predefined _FDE and _GTM names. The expected 950return value for both names is a Buffer of 5 DWORDs. This repair fixes two 951possible problems (both seen in the field), where a package of integers is 952returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 953 954Implemented additional module-level code support. This change will properly 955execute module-level code that is not at the root of the namespace (under a 956Device object, etc.). Now executes the code within the current scope instead 957of the root. ACPICA BZ 762. Lin Ming. 958 959Fixed possible mutex acquisition errors when running _REG methods. Fixes a 960problem where mutex errors can occur when running a _REG method that is in 961the same scope as a method-defined operation region or an operation region 962under a module-level IF block. This type of code is rare, so the problem has 963not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 964 965Fixed a possible memory leak during module-level code execution. An object 966could be leaked for each block of executed module-level code if the 967interpreter slack mode is enabled This change deletes any implicitly returned 968object from the module-level code block. Lin Ming. 969 970Removed messages for successful predefined repair(s). The repair mechanism 971was considered too wordy. Now, messages are only unconditionally emitted if 972the return object cannot be repaired. Existing messages for successful 973repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 974 975Example Code and Data Size: These are the sizes for the OS-independent 976acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 977debug version of the code includes the debug output trace mechanism and has a 978much larger code and data size. 979 980 Previous Release: 981 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 982 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 983 Current Release: 984 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 985 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 986 9872) iASL Compiler/Disassembler and Tools: 988 989iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 990were no longer automatically removed at the termination of the compile. 991 992acpiexec: Implemented the -f option to specify default region fill value. 993This option specifies the value used to initialize buffers that simulate 994operation regions. Default value is zero. Useful for debugging problems that 995depend on a specific initial value for a region or field. 996 997---------------------------------------- 99812 November 2009. Summary of changes for version 20091112: 999 10001) ACPI CA Core Subsystem: 1001 1002Implemented a post-order callback to AcpiWalkNamespace. The existing 1003interface only has a pre-order callback. This change adds an additional 1004parameter for a post-order callback which will be more useful for bus scans. 1005ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 1006 1007Modified the behavior of the operation region memory mapping cache for 1008SystemMemory. Ensure that the memory mappings created for operation regions 1009do not cross 4K page boundaries. Crossing a page boundary while mapping 1010regions can cause kernel warnings on some hosts if the pages have different 1011attributes. Such regions are probably BIOS bugs, and this is the workaround. 1012Linux BZ 14445. Lin Ming. 1013 1014Implemented an automatic repair for predefined methods that must return 1015sorted lists. This change will repair (by sorting) packages returned by _ALR, 1016_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 1017and do not contain NULL package elements. Adds one new file, 1018namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1019 1020Fixed a possible fault during predefined name validation if a return Package 1021object contains NULL elements. Also adds a warning if a NULL element is 1022followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 1023include repair or removal of all such NULL elements where possible. 1024 1025Implemented additional module-level executable AML code support. This change 1026will execute module-level code that is not at the root of the namespace 1027(under a Device object, etc.) at table load time. Module-level executable AML 1028code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1029 1030Implemented a new internal function to create Integer objects. This function 1031simplifies miscellaneous object creation code. ACPICA BZ 823. 1032 1033Reduced the severity of predefined repair messages, Warning to Info. Since 1034the object was successfully repaired, a warning is too severe. Reduced to an 1035info message for now. These messages may eventually be changed to debug-only. 1036ACPICA BZ 812. 1037 1038Example Code and Data Size: These are the sizes for the OS-independent 1039acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1040debug version of the code includes the debug output trace mechanism and has a 1041much larger code and data size. 1042 1043 Previous Release: 1044 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1045 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1046 Current Release: 1047 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1048 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1049 10502) iASL Compiler/Disassembler and Tools: 1051 1052iASL: Implemented Switch() with While(1) so that Break works correctly. This 1053change correctly implements the Switch operator with a surrounding While(1) 1054so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1055 1056iASL: Added a message if a package initializer list is shorter than package 1057length. Adds a new remark for a Package() declaration if an initializer list 1058exists, but is shorter than the declared length of the package. Although 1059technically legal, this is probably a coding error and it is seen in the 1060field. ACPICA BZ 815. Lin Ming, Bob Moore. 1061 1062iASL: Fixed a problem where the compiler could fault after the maximum number 1063of errors was reached (200). 1064 1065acpixtract: Fixed a possible warning for pointer cast if the compiler warning 1066level set very high. 1067 1068---------------------------------------- 106913 October 2009. Summary of changes for version 20091013: 1070 10711) ACPI CA Core Subsystem: 1072 1073Fixed a problem where an Operation Region _REG method could be executed more 1074than once. If a custom address space handler is installed by the host before 1075the "initialize operation regions" phase of the ACPICA initialization, any 1076_REG methods for that address space could be executed twice. This change 1077fixes the problem. ACPICA BZ 427. Lin Ming. 1078 1079Fixed a possible memory leak for the Scope() ASL operator. When the exact 1080invocation of "Scope(\)" is executed (change scope to root), one internal 1081operand object was leaked. Lin Ming. 1082 1083Implemented a run-time repair for the _MAT predefined method. If the _MAT 1084return value is defined as a Field object in the AML, and the field 1085size is less than or equal to the default width of an integer (32 or 64),_MAT 1086can incorrectly return an Integer instead of a Buffer. ACPICA now 1087automatically repairs this problem. ACPICA BZ 810. 1088 1089Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1090"OEM Information" field is often incorrectly returned as an Integer with 1091value zero if the field is not supported by the platform. This is due to an 1092ambiguity in the ACPI specification. The field should always be a string. 1093ACPICA now automatically repairs this problem by returning a NULL string 1094within the returned Package. ACPICA BZ 807. 1095 1096Example Code and Data Size: These are the sizes for the OS-independent 1097acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1098debug version of the code includes the debug output trace mechanism and has a 1099much larger code and data size. 1100 1101 Previous Release: 1102 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1103 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1104 Current Release: 1105 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1106 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1107 11082) iASL Compiler/Disassembler and Tools: 1109 1110Disassembler: Fixed a problem where references to external symbols that 1111contained one or more parent-prefixes (carats) were not handled correctly, 1112possibly causing a fault. ACPICA BZ 806. Lin Ming. 1113 1114Disassembler: Restructured the code so that all functions that handle 1115external symbols are in a single module. One new file is added, 1116common/dmextern.c. 1117 1118AML Debugger: Added a max count argument for the Batch command (which 1119executes multiple predefined methods within the namespace.) 1120 1121iASL: Updated the compiler documentation (User Reference.) Available at 1122http://www.acpica.org/documentation/. ACPICA BZ 750. 1123 1124AcpiXtract: Updated for Lint and other formatting changes. Close all open 1125files. 1126 1127---------------------------------------- 112803 September 2009. Summary of changes for version 20090903: 1129 11301) ACPI CA Core Subsystem: 1131 1132For Windows Vista compatibility, added the automatic execution of an _INI 1133method located at the namespace root (\_INI). This method is executed at 1134table load time. This support is in addition to the automatic execution of 1135\_SB._INI. Lin Ming. 1136 1137Fixed a possible memory leak in the interpreter for AML package objects if 1138the package initializer list is longer than the defined size of the package. 1139This apparently can only happen if the BIOS changes the package size on the 1140fly (seen in a _PSS object), as ASL compilers do not allow this. The 1141interpreter will truncate the package to the defined size (and issue an error 1142message), but previously could leave the extra objects undeleted if they were 1143pre-created during the argument processing (such is the case if the package 1144consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1145 1146Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1147This has been reported in the field. Previously, ACPICA would zero out the 1148buffer/string. Now, the operation is treated as a noop. Provides Windows 1149compatibility. ACPICA BZ 803. Lin Ming. 1150 1151Removed an extraneous error message for ASL constructs of the form 1152Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1153are seen in many BIOSs and are once again treated as NOOPs and no error is 1154emitted when they are encountered. ACPICA BZ 785. 1155 1156Fixed an extraneous warning message if a _DSM reserved method returns a 1157Package object. _DSM can return any type of object, so validation on the 1158return type cannot be performed. ACPICA BZ 802. 1159 1160Example Code and Data Size: These are the sizes for the OS-independent 1161acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1162debug version of the code includes the debug output trace mechanism and has a 1163much larger code and data size. 1164 1165 Previous Release: 1166 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1167 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1168 Current Release: 1169 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1170 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1171 11722) iASL Compiler/Disassembler and Tools: 1173 1174iASL: Fixed a problem with the use of the Alias operator and Resource 1175Templates. The correct alias is now constructed and no error is emitted. 1176ACPICA BZ 738. 1177 1178iASL: Implemented the -I option to specify additional search directories for 1179include files. Allows multiple additional search paths for include files. 1180Directories are searched in the order specified on the command line (after 1181the local directory is searched.) ACPICA BZ 800. 1182 1183iASL: Fixed a problem where the full pathname for include files was not 1184emitted for warnings/errors. This caused the IDE support to not work 1185properly. ACPICA BZ 765. 1186 1187iASL: Implemented the -@ option to specify a Windows-style response file 1188containing additional command line options. ACPICA BZ 801. 1189 1190AcpiExec: Added support to load multiple AML files simultaneously (such as a 1191DSDT and multiple SSDTs). Also added support for wildcards within the AML 1192pathname. These features allow all machine tables to be easily loaded and 1193debugged together. ACPICA BZ 804. 1194 1195Disassembler: Added missing support for disassembly of HEST table Error Bank 1196subtables. 1197 1198---------------------------------------- 119930 July 2009. Summary of changes for version 20090730: 1200 1201The ACPI 4.0 implementation for ACPICA is complete with this release. 1202 12031) ACPI CA Core Subsystem: 1204 1205ACPI 4.0: Added header file support for all new and changed ACPI tables. 1206Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1207for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1208EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1209have been some ACPI 4.0 changes to other existing tables. Split the large 1210actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1211 1212ACPI 4.0: Implemented predefined name validation for all new names. There are 121331 new names in ACPI 4.0. The predefined validation module was split into two 1214files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1215 1216Implemented support for so-called "module-level executable code". This is 1217executable AML code that exists outside of any control method and is intended 1218to be executed at table load time. Although illegal since ACPI 2.0, this type 1219of code still exists and is apparently still being created. Blocks of this 1220code are now detected and executed as intended. Currently, the code blocks 1221must exist under either an If, Else, or While construct; these are the 1222typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1223 1224Implemented an automatic dynamic repair for predefined names that return 1225nested Package objects. This applies to predefined names that are defined to 1226return a variable-length Package of sub-packages. If the number of sub- 1227packages is one, BIOS code is occasionally seen that creates a simple single 1228package with no sub-packages. This code attempts to fix the problem by 1229wrapping a new package object around the existing package. These methods can 1230be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1231790. 1232 1233Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1234The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1235BZ 793. 1236 1237Fixed a problem with AcpiReset where the reset would silently fail if the 1238register was one of the protected I/O ports. AcpiReset now bypasses the port 1239validation mechanism. This may eventually be driven into the AcpiRead/Write 1240interfaces. 1241 1242Fixed a regression related to the recent update of the AcpiRead/Write 1243interfaces. A sleep/suspend could fail if the optional PM2 Control register 1244does not exist during an attempt to write the Bus Master Arbitration bit. 1245(However, some hosts already delete the code that writes this bit, and the 1246code may in fact be obsolete at this date.) ACPICA BZ 799. 1247 1248Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1249in succession. ACPICA BZ 795. 1250 1251Example Code and Data Size: These are the sizes for the OS-independent 1252acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1253debug version of the code includes the debug output trace mechanism and has a 1254much larger code and data size. 1255 1256 Previous Release: 1257 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1258 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1259 Current Release: 1260 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1261 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1262 12632) iASL Compiler/Disassembler and Tools: 1264 1265ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1266changes to existing tables. ACPICA BZ 775. 1267 1268---------------------------------------- 126925 June 2009. Summary of changes for version 20090625: 1270 1271The ACPI 4.0 Specification was released on June 16 and is available at 1272www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1273continue for the next few releases. 1274 12751) ACPI CA Core Subsystem: 1276 1277ACPI 4.0: Implemented interpreter support for the IPMI operation region 1278address space. Includes support for bi-directional data buffers and an IPMI 1279address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1280773. Lin Ming. 1281 1282ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1283support in both the header files and the disassembler. 1284 1285Completed a major update for the AcpiGetObjectInfo external interface. 1286Changes include: 1287 - Support for variable, unlimited length HID, UID, and CID strings. 1288 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1289 - Call the _SxW power methods on behalf of a device object. 1290 - Determine if a device is a PCI root bridge. 1291 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1292These changes will require an update to all callers of this interface. See 1293the updated ACPICA Programmer Reference for details. One new source file has 1294been added - utilities/utids.c. ACPICA BZ 368, 780. 1295 1296Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1297transfers. The Value parameter has been extended from 32 bits to 64 bits in 1298order to support new ACPI 4.0 tables. These changes will require an update to 1299all callers of these interfaces. See the ACPICA Programmer Reference for 1300details. ACPICA BZ 768. 1301 1302Fixed several problems with AcpiAttachData. The handler was not invoked when 1303the host node was deleted. The data sub-object was not automatically deleted 1304when the host node was deleted. The interface to the handler had an unused 1305parameter, this was removed. ACPICA BZ 778. 1306 1307Enhanced the function that dumps ACPI table headers. All non-printable 1308characters in the string fields are now replaced with '?' (Signature, OemId, 1309OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1310these fields are occasionally seen in the field. ACPICA BZ 788. 1311 1312Fixed a problem with predefined method repair code where the code that 1313attempts to repair/convert an object of incorrect type is only executed on 1314the first time the predefined method is called. The mechanism that disables 1315warnings on subsequent calls was interfering with the repair mechanism. 1316ACPICA BZ 781. 1317 1318Fixed a possible memory leak in the predefined validation/repair code when a 1319buffer is automatically converted to an expected string object. 1320 1321Removed obsolete 16-bit files from the distribution and from the current git 1322tree head. ACPICA BZ 776. 1323 1324Example Code and Data Size: These are the sizes for the OS-independent 1325acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1326debug version of the code includes the debug output trace mechanism and has a 1327much larger code and data size. 1328 1329 Previous Release: 1330 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1331 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1332 Current Release: 1333 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1334 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1335 13362) iASL Compiler/Disassembler and Tools: 1337 1338ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1339operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1340 1341ACPI 4.0: iASL - implemented compile-time validation support for all new 1342predefined names and control methods (31 total). ACPICA BZ 769. 1343 1344---------------------------------------- 134521 May 2009. Summary of changes for version 20090521: 1346 13471) ACPI CA Core Subsystem: 1348 1349Disabled the preservation of the SCI enable bit in the PM1 control register. 1350The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1351a "preserved" bit - "OSPM always preserves this bit position", section 13524.7.3.2.1. However, some machines fail if this bit is in fact preserved 1353because the bit needs to be explicitly set by the OS as a workaround. No 1354machines fail if the bit is not preserved. Therefore, ACPICA no longer 1355attempts to preserve this bit. 1356 1357Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1358incorrectly formed _PRT package could cause a fault. Added validation to 1359ensure that each package element is actually a sub-package. 1360 1361Implemented a new interface to install or override a single control method, 1362AcpiInstallMethod. This interface is useful when debugging in order to repair 1363an existing method or to install a missing method without having to override 1364the entire ACPI table. See the ACPICA Programmer Reference for use and 1365examples. Lin Ming, Bob Moore. 1366 1367Fixed several reference count issues with the DdbHandle object that is 1368created from a Load or LoadTable operator. Prevent premature deletion of the 1369object. Also, mark the object as invalid once the table has been unloaded. 1370This is needed because the handle itself may not be deleted after the table 1371unload, depending on whether it has been stored in a named object by the 1372caller. Lin Ming. 1373 1374Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1375mutexes of the same sync level are acquired but then not released in strict 1376opposite order, the internally maintained Current Sync Level becomes confused 1377and can cause subsequent execution errors. ACPICA BZ 471. 1378 1379Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1380specification has been changed to make the SyncLevel for mutex objects more 1381useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1382same as the current sync level. This makes more sense than the previous rule 1383(SyncLevel less than or equal). This change updates the code to match the 1384specification. 1385 1386Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1387(local) cache must be locked during all cache object deletions. Andrew 1388Baumann. 1389 1390Updated the Load operator to use operation region interfaces. This replaces 1391direct memory mapping with region access calls. Now, all region accesses go 1392through the installed region handler as they should. 1393 1394Simplified and optimized the NsGetNextNode function. Reduced parameter count 1395and reduced code for this frequently used function. 1396 1397Example Code and Data Size: These are the sizes for the OS-independent 1398acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1399debug version of the code includes the debug output trace mechanism and has a 1400much larger code and data size. 1401 1402 Previous Release: 1403 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1404 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1405 Current Release: 1406 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1407 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1408 14092) iASL Compiler/Disassembler and Tools: 1410 1411Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1412with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1413after an invalid sub-table ID. 1414 1415---------------------------------------- 141622 April 2009. Summary of changes for version 20090422: 1417 14181) ACPI CA Core Subsystem: 1419 1420Fixed a compatibility issue with the recently released I/O port protection 1421mechanism. For windows compatibility, 1) On a port protection violation, 1422simply ignore the request and do not return an exception (allow the control 1423method to continue execution.) 2) If only part of the request overlaps a 1424protected port, read/write the individual ports that are not protected. Linux 1425BZ 13036. Lin Ming 1426 1427Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1428breaks into the AML debugger if the debugger is present. This matches the 1429ACPI-defined behavior. 1430 1431Fixed several possible warnings related to the use of the configurable 1432ACPI_THREAD_ID. This type can now be configured as either an integer or a 1433pointer with no warnings. Also fixes several warnings in printf-like 1434statements for the 64-bit build when the type is configured as a pointer. 1435ACPICA BZ 766, 767. 1436 1437Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1438warning options.) Examples include printf formats, aliasing, unused globals, 1439missing prototypes, missing switch default statements, use of non-ANSI 1440library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1441a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1442 1443Example Code and Data Size: These are the sizes for the OS-independent 1444acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1445debug version of the code includes the debug output trace mechanism and has a 1446much larger code and data size. 1447 1448 Previous Release: 1449 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1450 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1451 Current Release: 1452 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1453 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1454 14552) iASL Compiler/Disassembler and Tools: 1456 1457iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1458the 64-bit build. 1459 1460iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1461correctly digest Windows/DOS formatted files (with CR/LF). 1462 1463iASL: Added a new option for "quiet mode" (-va) that produces only the 1464compilation summary, not individual errors and warnings. Useful for large 1465batch compilations. 1466 1467AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1468timeout that can be used to detect hang conditions during execution of AML 1469code (includes both internal semaphores and AML-defined mutexes and events.) 1470 1471Added new makefiles for the generation of acpica in a generic unix-like 1472environment. These makefiles are intended to generate the acpica tools and 1473utilities from the original acpica git source tree structure. 1474 1475Test Suites: Updated and cleaned up the documentation files. Updated the 1476copyrights to 2009, affecting all source files. Use the new version of iASL 1477with quiet mode. Increased the number of available semaphores in the Windows 1478OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1479an alternate implementation of the semaphore timeout to allow aslts to 1480execute fully on Cygwin. 1481 1482---------------------------------------- 148320 March 2009. Summary of changes for version 20090320: 1484 14851) ACPI CA Core Subsystem: 1486 1487Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1488unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1489namespace walks (readers), but block a dynamic table unload until it can gain 1490exclusive write access to the namespace. This fixes a problem where a table 1491unload could (possibly catastrophically) delete the portion of the namespace 1492that is currently being examined by a walk. Adds a new file, utlock.c, that 1493implements the reader/writer lock mechanism. ACPICA BZ 749. 1494 1495Fixed a regression introduced in version 20090220 where a change to the FADT 1496handling could cause the ACPICA subsystem to access non-existent I/O ports. 1497 1498Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1499FADT can contain both 32-bit and 64-bit versions of these addresses. 1500Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1501versions were valid, but not equal, the 64-bit version was used. This was 1502found to cause some machines to fail. Now, in this case, the 32-bit version 1503is used instead. This now matches the Windows behavior. 1504 1505Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1506compatibility and protects the standard PC I/O ports from access via AML 1507code. Adds a new file, hwvalid.c 1508 1509Fixed a possible extraneous warning message from the FADT support. The 1510message warns of a 32/64 length mismatch between the legacy and GAS 1511definitions for a register. 1512 1513Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1514made obsolete by the port protection mechanism above. It was previously used 1515to validate the entire address range of an operation region, which could be 1516incorrect if the range included illegal ports, but fields within the 1517operation region did not actually access those ports. Validation is now 1518performed on a per-field basis instead of the entire region. 1519 1520Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1521Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1522means a read/modify/write when writing to the register. However, for status 1523registers, writing a one means clear the event. Writing a zero means preserve 1524the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1525and the ACPICA code now simply always writes a zero to the ignored bit. 1526 1527Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1528per the ACPI specification, for the control registers, preserve 1529(read/modify/write) all bits that are defined as either reserved or ignored. 1530 1531Updated the handling of write-only bits in the PM1 A/B Control Registers. 1532When reading the register, zero the write-only bits as per the ACPI spec. 1533ACPICA BZ 443. Lin Ming. 1534 1535Removed "Linux" from the list of supported _OSI strings. Linux no longer 1536wants to reply true to this request. The Windows strings are the only paths 1537through the AML that are tested and known to work properly. 1538 1539 Previous Release: 1540 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1541 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1542 Current Release: 1543 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1544 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1545 15462) iASL Compiler/Disassembler and Tools: 1547 1548Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1549aetables.c 1550 1551---------------------------------------- 155220 February 2009. Summary of changes for version 20090220: 1553 15541) ACPI CA Core Subsystem: 1555 1556Optimized the ACPI register locking. Removed locking for reads from the ACPI 1557bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1558not required when reading the single-bit registers. The 1559AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1560This will improve performance for reads on these registers. ACPICA BZ 760. 1561 1562Fixed the parameter validation for AcpiRead/Write. Now return 1563AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1564the register has an address of zero. Previously, these cases simply returned 1565AE_OK. For optional registers such as PM1B status/enable/control, the caller 1566should check for a valid register address before calling. ACPICA BZ 748. 1567 1568Renamed the external ACPI bit register access functions. Renamed 1569AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1570functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1571Also, restructured the code for these functions by simplifying the code path 1572and condensing duplicate code to reduce code size. 1573 1574Added new functions to transparently handle the possibly split PM1 A/B 1575registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1576now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1577746. 1578 1579Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1580This function writes both of the PM1 control registers (A/B). These registers 1581are different than the PM1 A/B status and enable registers in that different 1582values can be written to the A/B registers. Most notably, the SLP_TYP bits 1583can be different, as per the values returned from the _Sx predefined methods. 1584 1585Removed an extra register write within AcpiHwClearAcpiStatus. This function 1586was writing an optional PM1B status register twice. The existing call to the 1587low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1588register. ACPICA BZ 751. 1589 1590Split out the PM1 Status registers from the FADT. Added new globals for these 1591registers (A/B), similar to the way the PM1 Enable registers are handled. 1592Instead of overloading the FADT Event Register blocks. This makes the code 1593clearer and less prone to error. 1594 1595Fixed the warning message for when the platform contains too many ACPI tables 1596for the default size of the global root table data structure. The calculation 1597for the truncation value was incorrect. 1598 1599Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1600obsolete macro, since it is now a simple reference to ->common.type. There 1601were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1602 1603Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1604TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1605simply SLEEP_TYPE. ACPICA BZ 754. 1606 1607Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1608function is only needed on 64-bit host operating systems and is thus not 1609included for 32-bit hosts. 1610 1611Debug output: print the input and result for invocations of the _OSI reserved 1612control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1613verbosity of this debug level. Len Brown. 1614 1615Example Code and Data Size: These are the sizes for the OS-independent 1616acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1617debug version of the code includes the debug output trace mechanism and has a 1618much larger code and data size. 1619 1620 Previous Release: 1621 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1622 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1623 Current Release: 1624 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1625 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1626 16272) iASL Compiler/Disassembler and Tools: 1628 1629Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1630various legal performance profiles. 1631 1632---------------------------------------- 163323 January 2009. Summary of changes for version 20090123: 1634 16351) ACPI CA Core Subsystem: 1636 1637Added the 2009 copyright to all module headers and signons. This affects 1638virtually every file in the ACPICA core subsystem, the iASL compiler, and 1639the tools/utilities. 1640 1641Implemented a change to allow the host to override any ACPI table, including 1642dynamically loaded tables. Previously, only the DSDT could be replaced by the 1643host. With this change, the AcpiOsTableOverride interface is called for each 1644table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1645a table is dynamically loaded via the AML Load operator. 1646 1647Updated FADT flag definitions, especially the Boot Architecture flags. 1648 1649Debugger: For the Find command, automatically pad the input ACPI name with 1650underscores if the name is shorter than 4 characters. This enables a match 1651with the actual namespace entry which is itself padded with underscores. 1652 1653Example Code and Data Size: These are the sizes for the OS-independent 1654acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1655debug version of the code includes the debug output trace mechanism and has a 1656much larger code and data size. 1657 1658 Previous Release: 1659 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1660 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1661 Current Release: 1662 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1663 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1664 16652) iASL Compiler/Disassembler and Tools: 1666 1667Fix build error under Bison-2.4. 1668 1669Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1670flags. Now decode all flags, regardless of the FADT version. Flag output 1671includes the FADT version which first defined each flag. 1672 1673The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1674DSDT). Windows only. 1675 1676---------------------------------------- 167704 December 2008. Summary of changes for version 20081204: 1678 16791) ACPI CA Core Subsystem: 1680 1681The ACPICA Programmer Reference has been completely updated and revamped for 1682this release. This includes updates to the external interfaces, OSL 1683interfaces, the overview sections, and the debugger reference. 1684 1685Several new ACPICA interfaces have been implemented and documented in the 1686programmer reference: 1687AcpiReset - Writes the reset value to the FADT-defined reset register. 1688AcpiDisableAllGpes - Disable all available GPEs. 1689AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1690AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1691AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1692AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1693AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1694 1695Most of the public ACPI hardware-related interfaces have been moved to a new 1696file, components/hardware/hwxface.c 1697 1698Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1699register lengths within the FADT are now used, and the low level ACPI 1700register access no longer hardcodes the ACPI register lengths. Given that 1701there may be some risk in actually trusting the FADT register lengths, a run- 1702time option was added to fall back to the default hardcoded lengths if the 1703FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1704option is set to true for now, and a warning is issued if a suspicious FADT 1705register length is overridden with the default value. 1706 1707Fixed a reference count issue in NsRepairObject. This problem was introduced 1708in version 20081031 as part of a fix to repair Buffer objects within 1709Packages. Lin Ming. 1710 1711Added semaphore support to the Linux/Unix application OS-services layer 1712(OSL). ACPICA BZ 448. Lin Ming. 1713 1714Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1715be implemented in the OSL, or will binary semaphores be used instead. 1716 1717Example Code and Data Size: These are the sizes for the OS-independent 1718acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1719debug version of the code includes the debug output trace mechanism and has a 1720much larger code and data size. 1721 1722 Previous Release: 1723 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1724 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1725 Current Release: 1726 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1727 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1728 17292) iASL Compiler/Disassembler and Tools: 1730 1731iASL: Completed the '-e' option to include additional ACPI tables in order to 1732aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1733Ming. 1734 1735iASL: Removed the "named object in while loop" error. The compiler cannot 1736determine how many times a loop will execute. ACPICA BZ 730. 1737 1738Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1739BZ 743. 1740 1741Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1742 1743---------------------------------------- 174431 October 2008. Summary of changes for version 20081031: 1745 17461) ACPI CA Core Subsystem: 1747 1748Restructured the ACPICA header files into public/private. acpi.h now includes 1749only the "public" acpica headers. All other acpica headers are "private" and 1750should not be included by acpica users. One new file, accommon.h is used to 1751include the commonly used private headers for acpica code generation. Future 1752plans include moving all private headers to a new subdirectory. 1753 1754Implemented an automatic Buffer->String return value conversion for 1755predefined ACPI methods. For these methods (such as _BIF), added automatic 1756conversion for return objects that are required to be a String, but a Buffer 1757was found instead. This can happen when reading string battery data from an 1758operation region, because it used to be difficult to convert the data from 1759buffer to string from within the ASL. Ensures that the host OS is provided 1760with a valid null-terminated string. Linux BZ 11822. 1761 1762Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1763into two: one for the 32-bit vector, another for the 64-bit vector. This is 1764required because the host OS must setup the wake much differently for each 1765vector (real vs. protected mode, etc.) and the interface itself should not be 1766deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1767interface, as it served no purpose (only the firmware reads the vector, OS 1768only writes the vector.) ACPICA BZ 731. 1769 1770Implemented a mechanism to escape infinite AML While() loops. Added a loop 1771counter to force exit from AML While loops if the count becomes too large. 1772This can occur in poorly written AML when the hardware does not respond 1773within a while loop and the loop does not implement a timeout. The maximum 1774loop count is configurable. A new exception code is returned when a loop is 1775broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1776 1777Optimized the execution of AML While loops. Previously, a control state 1778object was allocated and freed for each execution of the loop. The 1779optimization is to simply reuse the control state for each iteration. This 1780speeds up the raw loop execution time by about 5%. 1781 1782Enhanced the implicit return mechanism. For Windows compatibility, return an 1783implicit integer of value zero for methods that contain no executable code. 1784Such methods are seen in the field as stubs (presumably), and can cause 1785drivers to fail if they expect a return value. Lin Ming. 1786 1787Allow multiple backslashes as root prefixes in namepaths. In a fully 1788qualified namepath, allow multiple backslash prefixes. This can happen (and 1789is seen in the field) because of the use of a double-backslash in strings 1790(since backslash is the escape character) causing confusion. ACPICA BZ 739 1791Lin Ming. 1792 1793Emit a warning if two different FACS or DSDT tables are discovered in the 1794FADT. Checks if there are two valid but different addresses for the FACS and 1795DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1796 1797Consolidated the method argument count validation code. Merged the code that 1798validates control method argument counts into the predefined validation 1799module. Eliminates possible multiple warnings for incorrect argument counts. 1800 1801Implemented ACPICA example code. Includes code for ACPICA initialization, 1802handler installation, and calling a control method. Available at 1803source/tools/examples. 1804 1805Added a global pointer for FACS table to simplify internal FACS access. Use 1806the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1807This simplifies the code for the Global Lock and the Firmware Waking 1808Vector(s). 1809 1810Example Code and Data Size: These are the sizes for the OS-independent 1811acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1812debug version of the code includes the debug output trace mechanism and has a 1813much larger code and data size. 1814 1815 Previous Release: 1816 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1817 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1818 Current Release: 1819 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1820 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1821 18222) iASL Compiler/Disassembler and Tools: 1823 1824iASL: Improved disassembly of external method calls. Added the -e option to 1825allow the inclusion of additional ACPI tables to help with the disassembly of 1826method invocations and the generation of external declarations during the 1827disassembly. Certain external method invocations cannot be disassembled 1828properly without the actual declaration of the method. Use the -e option to 1829include the table where the external method(s) are actually declared. Most 1830useful for disassembling SSDTs that make method calls back to the master 1831DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1832-e dsdt.aml ssdt1.aml 1833 1834iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1835problem where the use of an alias within a namepath would result in a not 1836found error or cause the compiler to fault. Also now allows forward 1837references from the Alias operator itself. ACPICA BZ 738. 1838 1839---------------------------------------- 184026 September 2008. Summary of changes for version 20080926: 1841 18421) ACPI CA Core Subsystem: 1843 1844Designed and implemented a mechanism to validate predefined ACPI methods and 1845objects. This code validates the predefined ACPI objects (objects whose names 1846start with underscore) that appear in the namespace, at the time they are 1847evaluated. The argument count and the type of the returned object are 1848validated against the ACPI specification. The purpose of this validation is 1849to detect problems with the BIOS-implemented predefined ACPI objects before 1850the results are returned to the ACPI-related drivers. Future enhancements may 1851include actual repair of incorrect return objects where possible. Two new 1852files are nspredef.c and acpredef.h. 1853 1854Fixed a fault in the AML parser if a memory allocation fails during the Op 1855completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1856 1857Fixed an issue with implicit return compatibility. This change improves the 1858implicit return mechanism to be more compatible with the MS interpreter. Lin 1859Ming, ACPICA BZ 349. 1860 1861Implemented support for zero-length buffer-to-string conversions. Allow zero 1862length strings during interpreter buffer-to-string conversions. For example, 1863during the ToDecimalString and ToHexString operators, as well as implicit 1864conversions. Fiodor Suietov, ACPICA BZ 585. 1865 1866Fixed two possible memory leaks in the error exit paths of 1867AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1868similar in that they use a stack of state objects in order to eliminate 1869recursion. The stack must be fully unwound and deallocated if an error 1870occurs. Lin Ming. ACPICA BZ 383. 1871 1872Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1873ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1874Moore ACPICA BZ 442. 1875 1876Removed the obsolete version number in module headers. Removed the 1877"$Revision" number that appeared in each module header. This version number 1878was useful under SourceSafe and CVS, but has no meaning under git. It is not 1879only incorrect, it could also be misleading. 1880 1881Example Code and Data Size: These are the sizes for the OS-independent 1882acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1883debug version of the code includes the debug output trace mechanism and has a 1884much larger code and data size. 1885 1886 Previous Release: 1887 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1888 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1889 Current Release: 1890 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1891 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1892 1893---------------------------------------- 189429 August 2008. Summary of changes for version 20080829: 1895 18961) ACPI CA Core Subsystem: 1897 1898Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1899Reference. Changes include the elimination of cheating on the Object field 1900for the DdbHandle subtype, addition of a reference class field to 1901differentiate the various reference types (instead of an AML opcode), and the 1902cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1903 1904Reduce an error to a warning for an incorrect method argument count. 1905Previously aborted with an error if too few arguments were passed to a 1906control method via the external ACPICA interface. Now issue a warning instead 1907and continue. Handles the case where the method inadvertently declares too 1908many arguments, but does not actually use the extra ones. Applies mainly to 1909the predefined methods. Lin Ming. Linux BZ 11032. 1910 1911Disallow the evaluation of named object types with no intrinsic value. Return 1912AE_TYPE for objects that have no value and therefore evaluation is undefined: 1913Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1914these types were allowed, but an exception would be generated at some point 1915during the evaluation. Now, the error is generated up front. 1916 1917Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1918(nsnames.c). Fixes a leak in the error exit path. 1919 1920Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1921levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1922interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1923ACPI_LV_EVENTS. 1924 1925Removed obsolete and/or unused exception codes from the acexcep.h header. 1926There is the possibility that certain device drivers may be affected if they 1927use any of these exceptions. 1928 1929The ACPICA documentation has been added to the public git source tree, under 1930acpica/documents. Included are the ACPICA programmer reference, the iASL 1931compiler reference, and the changes.txt release logfile. 1932 1933Example Code and Data Size: These are the sizes for the OS-independent 1934acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1935debug version of the code includes the debug output trace mechanism and has a 1936much larger code and data size. 1937 1938 Previous Release: 1939 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1940 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1941 Current Release: 1942 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1943 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1944 19452) iASL Compiler/Disassembler and Tools: 1946 1947Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1948defines _SCP with 3 arguments. Previous versions defined it with only 1 1949argument. iASL now allows both definitions. 1950 1951iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1952length subtables when disassembling ACPI tables. Also fixed a couple of 1953errors where a full 16-bit table type field was not extracted from the input 1954properly. 1955 1956acpisrc: Improve comment counting mechanism for generating source code 1957statistics. Count first and last lines of multi-line comments as whitespace, 1958not comment lines. Handle Linux legal header in addition to standard acpica 1959header. 1960 1961---------------------------------------- 1962 196329 July 2008. Summary of changes for version 20080729: 1964 19651) ACPI CA Core Subsystem: 1966 1967Fix a possible deadlock in the GPE dispatch. Remove call to 1968AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1969to acquire the GPE lock but can deadlock since the GPE lock is already held 1970at dispatch time. This code was introduced in version 20060831 as a response 1971to Linux BZ 6881 and has since been removed from Linux. 1972 1973Add a function to dereference returned reference objects. Examines the return 1974object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1975automatically dereferenced in an attempt to return something useful (these 1976reference types cannot be converted into an external ACPI_OBJECT.) Provides 1977MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1978 1979x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1980subtables for the MADT and one new subtable for the SRAT. Includes 1981disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1982Specification, June 2008. 1983 1984Additional error checking for pathname utilities. Add error check after all 1985calls to AcpiNsGetPathnameLength. Add status return from 1986AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1987to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1988 1989Return status from the global init function AcpiUtGlobalInitialize. This is 1990used by both the kernel subsystem and the utilities such as iASL compiler. 1991The function could possibly fail when the caches are initialized. Yang Yi. 1992 1993Add a function to decode reference object types to strings. Created for 1994improved error messages. 1995 1996Improve object conversion error messages. Better error messages during object 1997conversion from internal to the external ACPI_OBJECT. Used for external calls 1998to AcpiEvaluateObject. 1999 2000Example Code and Data Size: These are the sizes for the OS-independent 2001acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2002debug version of the code includes the debug output trace mechanism and has a 2003much larger code and data size. 2004 2005 Previous Release: 2006 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2007 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2008 Current Release: 2009 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2010 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2011 20122) iASL Compiler/Disassembler and Tools: 2013 2014Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2015introduced in version 20080701. If the object being evaluated (via execute 2016command) is not a method, the debugger can hang while trying to obtain non- 2017existent parameters. 2018 2019iASL: relax error for using reserved "_T_x" identifiers. These names can 2020appear in a disassembled ASL file if they were emitted by the original 2021compiler. Instead of issuing an error or warning and forcing the user to 2022manually change these names, issue a remark instead. 2023 2024iASL: error if named object created in while loop. Emit an error if any named 2025object is created within a While loop. If allowed, this code will generate a 2026run-time error on the second iteration of the loop when an attempt is made to 2027create the same named object twice. ACPICA bugzilla 730. 2028 2029iASL: Support absolute pathnames for include files. Add support for absolute 2030pathnames within the Include operator. previously, only relative pathnames 2031were supported. 2032 2033iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 2034The ACPI spec requires one interrupt minimum. BZ 423 2035 2036iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2037Handles the case for the Interrupt Resource Descriptor where 2038the ResourceSource argument is omitted but ResourceSourceIndex 2039is present. Now leave room for the Index. BZ 426 2040 2041iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2042where an error message is emitted if the target does not exist. BZ 516 2043 2044iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2045(get ACPI tables on Windows). This was apparently broken in version 20070919. 2046 2047AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 2048the EOF happens immediately after the last table in the input file. Print 2049completion message. Previously, no message was displayed in this case. 2050 2051---------------------------------------- 205201 July 2008. Summary of changes for version 20080701: 2053 20540) Git source tree / acpica.org 2055 2056Fixed a problem where a git-clone from http would not transfer the entire 2057source tree. 2058 20591) ACPI CA Core Subsystem: 2060 2061Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2062enable bit. Now performs a read-change-write of the enable register instead 2063of simply writing out the cached enable mask. This will prevent inadvertent 2064enabling of GPEs if a rogue GPE is received during initialization (before GPE 2065handlers are installed.) 2066 2067Implemented a copy for dynamically loaded tables. Previously, dynamically 2068loaded tables were simply mapped - but on some machines this memory is 2069corrupted after suspend. Now copy the table to a local buffer. For the 2070OpRegion case, added checksum verify. Use the table length from the table 2071header, not the region length. For the Buffer case, use the table length 2072also. Dennis Noordsij, Bob Moore. BZ 10734 2073 2074Fixed a problem where the same ACPI table could not be dynamically loaded and 2075unloaded more than once. Without this change, a table cannot be loaded again 2076once it has been loaded/unloaded one time. The current mechanism does not 2077unregister a table upon an unload. During a load, if the same table is found, 2078this no longer returns an exception. BZ 722 2079 2080Fixed a problem where the wrong descriptor length was calculated for the 2081EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2082are calculated as 12 bytes long, but the actual length in the internal 2083descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2084by Linn Crosetto. BZ 728 2085 2086Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2087by Load() did not have its reference count decremented during unload, leading 2088to a memory leak. Lin Ming. BZ 727 2089 2090Fixed a possible memory leak when deleting thermal/processor objects. Any 2091associated notify handlers (and objects) were not being deleted. Fiodor 2092Suietov. BZ 506 2093 2094Fixed the ordering of the ASCII names in the global mutex table to match the 2095actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 2096Vegard Nossum. BZ 726 2097 2098Enhanced the AcpiGetObjectInfo interface to return the number of required 2099arguments if the object is a control method. Added this call to the debugger 2100so the proper number of default arguments are passed to a method. This 2101prevents a warning when executing methods from AcpiExec. 2102 2103Added a check for an invalid handle in AcpiGetObjectInfo. Return 2104AE_BAD_PARAMETER if input handle is invalid. BZ 474 2105 2106Fixed an extraneous warning from exconfig.c on the 64-bit build. 2107 2108Example Code and Data Size: These are the sizes for the OS-independent 2109acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2110debug version of the code includes the debug output trace mechanism and has a 2111much larger code and data size. 2112 2113 Previous Release: 2114 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2115 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2116 Current Release: 2117 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2118 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2119 21202) iASL Compiler/Disassembler and Tools: 2121 2122iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2123resource descriptor names. 2124 2125iASL: Detect invalid ASCII characters in input (windows version). Removed the 2126"-CF" flag from the flex compile, enables correct detection of non-ASCII 2127characters in the input. BZ 441 2128 2129iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2130"result of operation not used" warning when the DDB handle returned from 2131LoadTable is not used. The warning is not needed. BZ 590 2132 2133AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 2134pass address of table to the AML. Added option to disable OpRegion simulation 2135to allow creation of an OpRegion with a real address that was passed to _CFG. 2136All of this allows testing of the Load and Unload operators from AcpiExec. 2137 2138Debugger: update tables command for unloaded tables. Handle unloaded tables 2139and use the standard table header output routine. 2140 2141---------------------------------------- 214209 June 2008. Summary of changes for version 20080609: 2143 21441) ACPI CA Core Subsystem: 2145 2146Implemented a workaround for reversed _PRT entries. A significant number of 2147BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2148change dynamically detects and repairs this problem. Provides compatibility 2149with MS ACPI. BZ 6859 2150 2151Simplified the internal ACPI hardware interfaces to eliminate the locking 2152flag parameter from Register Read/Write. Added a new external interface, 2153AcpiGetRegisterUnlocked. 2154 2155Fixed a problem where the invocation of a GPE control method could hang. This 2156was a regression introduced in 20080514. The new method argument count 2157validation mechanism can enter an infinite loop when a GPE method is 2158dispatched. Problem fixed by removing the obsolete code that passed GPE block 2159information to the notify handler via the control method parameter pointer. 2160 2161Fixed a problem where the _SST execution status was incorrectly returned to 2162the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 216320080514. _SST is optional and a NOT_FOUND exception should never be 2164returned. BZ 716 2165 2166Fixed a problem where a deleted object could be accessed from within the AML 2167parser. This was a regression introduced in version 20080123 as a fix for the 2168Unload operator. Lin Ming. BZ 10669 2169 2170Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2171and eliminated the use of a negative index in a loop. Operands are now 2172displayed in the correct order, not backwards. This also fixes a regression 2173introduced in 20080514 on 64-bit systems where the elimination of 2174ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2175 2176Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2177path did not delete a locally allocated structure. 2178 2179Updated definitions for the DMAR and SRAT tables to synchronize with the 2180current specifications. Includes disassembler support. 2181 2182Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2183loop termination value was used. Loop terminated on iteration early, missing 2184one mutex. Linn Crosetto 2185 2186Example Code and Data Size: These are the sizes for the OS-independent 2187acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2188debug version of the code includes the debug output trace mechanism and has a 2189much larger code and data size. 2190 2191 Previous Release: 2192 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2193 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2194 Current Release: 2195 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2196 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2197 21982) iASL Compiler/Disassembler and Tools: 2199 2200Disassembler: Implemented support for EisaId() within _CID objects. Now 2201disassemble integer _CID objects back to EisaId invocations, including 2202multiple integers within _CID packages. Includes single-step support for 2203debugger also. 2204 2205Disassembler: Added support for DMAR and SRAT table definition changes. 2206 2207---------------------------------------- 220814 May 2008. Summary of changes for version 20080514: 2209 22101) ACPI CA Core Subsystem: 2211 2212Fixed a problem where GPEs were enabled too early during the ACPICA 2213initialization. This could lead to "handler not installed" errors on some 2214machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2215ensures that all operation regions and devices throughout the namespace have 2216been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2217 2218Implemented a change to the enter sleep code. Moved execution of the _GTS 2219method to just before setting sleep enable bit. The execution was moved from 2220AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2221immediately before the SLP_EN bit is set, as per the ACPI specification. 2222Luming Yu, BZ 1653. 2223 2224Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2225the GPE, even if ACPICA thinks that that it is already disabled. It is 2226possible that the AML or some other code has enabled the GPE unbeknownst to 2227the ACPICA code. 2228 2229Fixed a problem with the Field operator where zero-length fields would return 2230an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2231field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2232 2233Implemented a fix for the Load operator, now load the table at the namespace 2234root. This reverts a change introduced in version 20071019. The table is now 2235loaded at the namespace root even though this goes against the ACPI 2236specification. This provides compatibility with other ACPI implementations. 2237The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2238 2239Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2240Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2241acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2242Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2243signatures, ACPICA must be compatible. BZ 10454. 2244 2245Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2246fields to the exception string arrays to eliminate a -1 subtraction on the 2247SubStatus field. 2248 2249Updated the debug tracking macros to reduce overall code and data size. 2250Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2251instead of pointers to static strings. Jan Beulich and Bob Moore. 2252 2253Implemented argument count checking in control method invocation via 2254AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2255many. This applies only to extern programmatic control method execution, not 2256method-to-method calls within the AML. Lin Ming. 2257 2258Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2259longer needed, especially with the removal of 16-bit support. It was replaced 2260mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 226132/64-bit platforms is required. 2262 2263Added the C const qualifier for appropriate string constants -- mostly 2264MODULE_NAME and printf format strings. Jan Beulich. 2265 2266Example Code and Data Size: These are the sizes for the OS-independent 2267acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2268debug version of the code includes the debug output trace mechanism and has a 2269much larger code and data size. 2270 2271 Previous Release: 2272 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2273 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2274 Current 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 22782) iASL Compiler/Disassembler and Tools: 2279 2280Implemented ACPI table revision ID validation in the disassembler. Zero is 2281always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2282means 32-bit and this is unusual. 2 or greater is 64-bit. 2283 2284---------------------------------------- 228521 March 2008. Summary of changes for version 20080321: 2286 22871) ACPI CA Core Subsystem: 2288 2289Implemented an additional change to the GPE support in order to suppress 2290spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2291disable incoming GPEs that are neither enabled nor disabled -- meaning that 2292the GPE is unknown to the system. This should prevent future interrupt floods 2293from that GPE. BZ 6217 (Zhang Rui) 2294 2295Fixed a problem where NULL package elements were not returned to the 2296AcpiEvaluateObject interface correctly. The element was simply ignored 2297instead of returning a NULL ACPI_OBJECT package element, potentially causing 2298a buffer overflow and/or confusing the caller who expected a fixed number of 2299elements. BZ 10132 (Lin Ming, Bob Moore) 2300 2301Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2302Qword), Field, BankField, and IndexField operators when invoked from inside 2303an executing control method. In this case, these operators created namespace 2304nodes that were incorrectly left marked as permanent nodes instead of 2305temporary nodes. This could cause a problem if there is race condition 2306between an exiting control method and a running namespace walk. (Reported by 2307Linn Crosetto) 2308 2309Fixed a problem where the CreateField and CreateXXXField operators would 2310incorrectly allow duplicate names (the name of the field) with no exception 2311generated. 2312 2313Implemented several changes for Notify handling. Added support for new Notify 2314values (ACPI 2.0+) and improved the Notify debug output. Notify on 2315PowerResource objects is no longer allowed, as per the ACPI specification. 2316(Bob Moore, Zhang Rui) 2317 2318All Reference Objects returned via the AcpiEvaluateObject interface are now 2319marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2320NULL objects - either NULL package elements or unresolved named references. 2321 2322Fixed a problem where an extraneous debug message was produced for package 2323objects (when debugging enabled). The message "Package List length larger 2324than NumElements count" is now produced in the correct case, and is now an 2325error message rather than a debug message. Added a debug message for the 2326opposite case, where NumElements is larger than the Package List (the package 2327will be padded out with NULL elements as per the ACPI spec.) 2328 2329Implemented several improvements for the output of the ASL "Debug" object to 2330clarify and keep all data for a given object on one output line. 2331 2332Fixed two size calculation issues with the variable-length Start Dependent 2333resource descriptor. 2334 2335Example Code and Data Size: These are the sizes for the OS-independent 2336acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2337debug version of the code includes the debug output trace mechanism and has 2338a much larger code and data size. 2339 2340 Previous Release: 2341 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2342 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2343 Current Release: 2344 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2345 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2346 23472) iASL Compiler/Disassembler and Tools: 2348 2349Fixed a problem with the use of the Switch operator where execution of the 2350containing method by multiple concurrent threads could cause an 2351AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2352actual Switch opcode, it must be simulated with local named temporary 2353variables and if/else pairs. The solution chosen was to mark any method that 2354uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2355 2356---------------------------------------- 235713 February 2008. Summary of changes for version 20080213: 2358 23591) ACPI CA Core Subsystem: 2360 2361Implemented another MS compatibility design change for GPE/Notify handling. 2362GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2363complete first. It is expected that the OSL will queue the enable request 2364behind all pending notify requests (may require changes to the local host OSL 2365in AcpiOsExecute). Alexey Starikovskiy. 2366 2367Fixed a problem where buffer and package objects passed as arguments to a 2368control method via the external AcpiEvaluateObject interface could cause an 2369AE_AML_INTERNAL exception depending on the order and type of operators 2370executed by the target control method. 2371 2372Fixed a problem where resource descriptor size optimization could cause a 2373problem when a _CRS resource template is passed to a _SRS method. The _SRS 2374resource template must use the same descriptors (with the same size) as 2375returned from _CRS. This change affects the following resource descriptors: 2376IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2377 2378Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2379objects did not perform an implicit conversion as it should. These types must 2380retain their initial type permanently as per the ACPI specification. However, 2381a CopyObject to all other object types should not perform an implicit 2382conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2383 2384Fixed a problem with the AcpiGetDevices interface where the mechanism to 2385match device CIDs did not examine the entire list of available CIDs, but 2386instead aborted on the first non-matching CID. Andrew Patterson. 2387 2388Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2389inadvertently changed to return a 16-bit value instead of a 32-bit value, 2390truncating the upper dword of a 64-bit value. This macro is only used to 2391display debug output, so no incorrect calculations were made. Also, 2392reimplemented the macro so that a 64-bit shift is not performed by 2393inefficient compilers. 2394 2395Added missing va_end statements that should correspond with each va_start 2396statement. 2397 2398Example Code and Data Size: These are the sizes for the OS-independent 2399acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2400debug version of the code includes the debug output trace mechanism and has 2401a much larger code and data size. 2402 2403 Previous Release: 2404 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2405 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2406 Current Release: 2407 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2408 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2409 24102) iASL Compiler/Disassembler and Tools: 2411 2412Implemented full disassembler support for the following new ACPI tables: 2413BERT, EINJ, and ERST. Implemented partial disassembler support for the 2414complicated HEST table. These tables support the Windows Hardware Error 2415Architecture (WHEA). 2416 2417---------------------------------------- 241823 January 2008. Summary of changes for version 20080123: 2419 24201) ACPI CA Core Subsystem: 2421 2422Added the 2008 copyright to all module headers and signons. This affects 2423virtually every file in the ACPICA core subsystem, the iASL compiler, and 2424the tools/utilities. 2425 2426Fixed a problem with the SizeOf operator when used with Package and Buffer 2427objects. These objects have deferred execution for some arguments, and the 2428execution is now completed before the SizeOf is executed. This problem caused 2429unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 24309558 2431 2432Implemented an enhancement to the interpreter "slack mode". In the absence of 2433an explicit return or an implicitly returned object from the last executed 2434opcode, a control method will now implicitly return an integer of value 0 for 2435Microsoft compatibility. (Lin Ming) BZ 392 2436 2437Fixed a problem with the Load operator where an exception was not returned in 2438the case where the table is already loaded. (Lin Ming) BZ 463 2439 2440Implemented support for the use of DDBHandles as an Indexed Reference, as per 2441the ACPI spec. (Lin Ming) BZ 486 2442 2443Implemented support for UserTerm (Method invocation) for the Unload operator 2444as per the ACPI spec. (Lin Ming) BZ 580 2445 2446Fixed a problem with the LoadTable operator where the OemId and OemTableId 2447input strings could cause unexpected failures if they were shorter than the 2448maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2449 2450Implemented support for UserTerm (Method invocation) for the Unload operator 2451as per the ACPI spec. (Lin Ming) BZ 580 2452 2453Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2454IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2455 2456Example Code and Data Size: These are the sizes for the OS-independent 2457acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2458debug version of the code includes the debug output trace mechanism and has 2459a much larger code and data size. 2460 2461 Previous Release: 2462 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2463 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2464 Current Release: 2465 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2466 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2467 24682) iASL Compiler/Disassembler and Tools: 2469 2470Implemented support in the disassembler for checksum validation on incoming 2471binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2472header dump at the start of the disassembly. 2473 2474Implemented additional debugging information in the namespace listing file 2475created during compilation. In addition to the namespace hierarchy, the full 2476pathname to each namespace object is displayed. 2477 2478Fixed a problem with the disassembler where invalid ACPI tables could cause 2479faults or infinite loops. 2480 2481Fixed an unexpected parse error when using the optional "parameter types" 2482list in a control method declaration. (Lin Ming) BZ 397 2483 2484Fixed a problem where two External declarations with the same name did not 2485cause an error (Lin Ming) BZ 509 2486 2487Implemented support for full TermArgs (adding Argx, Localx and method 2488invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2489Ming) BZ 583,587 2490 2491---------------------------------------- 249219 December 2007. Summary of changes for version 20071219: 2493 24941) ACPI CA Core Subsystem: 2495 2496Implemented full support for deferred execution for the TermArg string 2497arguments for DataTableRegion. This enables forward references and full 2498operand resolution for the three string arguments. Similar to OperationRegion 2499deferred argument execution.) Lin Ming. BZ 430 2500 2501Implemented full argument resolution support for the BankValue argument to 2502BankField. Previously, only constants were supported, now any TermArg may be 2503used. Lin Ming BZ 387, 393 2504 2505Fixed a problem with AcpiGetDevices where the search of a branch of the 2506device tree could be terminated prematurely. In accordance with the ACPI 2507specification, the search down the current branch is terminated if a device 2508is both not present and not functional (instead of just not present.) Yakui 2509Zhao. 2510 2511Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2512the underlying AML code changed the GPE enable registers. Now, any unknown 2513incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2514instead of simply ignored. Rui Zhang. 2515 2516Fixed a problem with Index Fields where the Index register was incorrectly 2517limited to a maximum of 32 bits. Now any size may be used. 2518 2519Fixed a couple memory leaks associated with "implicit return" objects when 2520the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2521 2522Example Code and Data Size: These are the sizes for the OS-independent 2523acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2524debug version of the code includes the debug output trace mechanism and has 2525a much larger code and data size. 2526 2527 Previous Release: 2528 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2529 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2530 Current Release: 2531 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2532 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2533 2534---------------------------------------- 253514 November 2007. Summary of changes for version 20071114: 2536 25371) ACPI CA Core Subsystem: 2538 2539Implemented event counters for each of the Fixed Events, the ACPI SCI 2540(interrupt) itself, and control methods executed. Named 2541AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2542should be useful for debugging and statistics. 2543 2544Implemented a new external interface, AcpiGetStatistics, to retrieve the 2545contents of the various event counters. Returns the current values for 2546AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2547AcpiMethodCount. The interface can be expanded in the future if new counters 2548are added. Device drivers should use this interface rather than access the 2549counters directly. 2550 2551Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2552the ShortDivide function worked incorrectly, causing problems with the BCD 2553functions with large input values. A truncation from 64-bit to 32-bit 2554inadvertently occurred. Internal BZ 435. Lin Ming 2555 2556Fixed a problem with Index references passed as method arguments. References 2557passed as arguments to control methods were dereferenced immediately (before 2558control was passed to the called method). The references are now correctly 2559passed directly to the called method. BZ 5389. Lin Ming 2560 2561Fixed a problem with CopyObject used in conjunction with the Index operator. 2562The reference was incorrectly dereferenced before the copy. The reference is 2563now correctly copied. BZ 5391. Lin Ming 2564 2565Fixed a problem with Control Method references within Package objects. These 2566references are now correctly generated. This completes the package 2567construction overhaul that began in version 20071019. 2568 2569Example Code and Data Size: These are the sizes for the OS-independent 2570acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2571debug version of the code includes the debug output trace mechanism and has 2572a much larger code and data size. 2573 2574 Previous Release: 2575 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2576 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2577 Current Release: 2578 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2579 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2580 2581 25822) iASL Compiler/Disassembler and Tools: 2583 2584The AcpiExec utility now installs handlers for all of the predefined 2585Operation Region types. New types supported are: PCI_Config, CMOS, and 2586PCIBARTarget. 2587 2588Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2589bit) address fields for the DSDT and FACS within the FADT were not being 2590used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2591and Bob Moore 2592 2593---------------------------------------- 259419 October 2007. Summary of changes for version 20071019: 2595 25961) ACPI CA Core Subsystem: 2597 2598Fixed a problem with the Alias operator when the target of the alias is a 2599named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2600Processor, and ThermalZone. In these cases, any children of the original 2601operator could not be accessed via the alias, potentially causing unexpected 2602AE_NOT_FOUND exceptions. (BZ 9067) 2603 2604Fixed a problem with the Package operator where all named references were 2605created as object references and left otherwise unresolved. According to the 2606ACPI specification, a Package can only contain Data Objects or references to 2607control methods. The implication is that named references to Data Objects 2608(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2609immediately upon package creation. This is the approach taken with this 2610change. References to all other named objects (Methods, Devices, Scopes, 2611etc.) are all now properly created as reference objects. (BZ 5328) 2612 2613Reverted a change to Notify handling that was introduced in version 261420070508. This version changed the Notify handling from asynchronous to 2615fully synchronous (Device driver Notify handling with respect to the Notify 2616ASL operator). It was found that this change caused more problems than it 2617solved and was removed by most users. 2618 2619Fixed a problem with the Increment and Decrement operators where the type of 2620the target object could be unexpectedly and incorrectly changed. (BZ 353) 2621Lin Ming. 2622 2623Fixed a problem with the Load and LoadTable operators where the table 2624location within the namespace was ignored. Instead, the table was always 2625loaded into the root or current scope. Lin Ming. 2626 2627Fixed a problem with the Load operator when loading a table from a buffer 2628object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2629 2630Fixed a problem with the Debug object where a store of a DdbHandle reference 2631object to the Debug object could cause a fault. 2632 2633Added a table checksum verification for the Load operator, in the case where 2634the load is from a buffer. (BZ 578). 2635 2636Implemented additional parameter validation for the LoadTable operator. The 2637length of the input strings SignatureString, OemIdString, and OemTableId are 2638now checked for maximum lengths. (BZ 582) Lin Ming. 2639 2640Example Code and Data Size: These are the sizes for the OS-independent 2641acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2642debug version of the code includes the debug output trace mechanism and has 2643a much larger code and data size. 2644 2645 Previous Release: 2646 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2647 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2648 Current Release: 2649 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2650 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2651 2652 26532) iASL Compiler/Disassembler: 2654 2655Fixed a problem where if a single file was specified and the file did not 2656exist, no error message was emitted. (Introduced with wildcard support in 2657version 20070917.) 2658 2659---------------------------------------- 266019 September 2007. Summary of changes for version 20070919: 2661 26621) ACPI CA Core Subsystem: 2663 2664Designed and implemented new external interfaces to install and remove 2665handlers for ACPI table-related events. Current events that are defined are 2666LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2667they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2668AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2669 2670Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2671(acpi_serialized option on Linux) could cause some systems to hang during 2672initialization. (Bob Moore) BZ 8171 2673 2674Fixed a problem where objects of certain types (Device, ThermalZone, 2675Processor, PowerResource) can be not found if they are declared and 2676referenced from within the same control method (Lin Ming) BZ 341 2677 2678Example Code and Data Size: These are the sizes for the OS-independent 2679acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2680debug version of the code includes the debug output trace mechanism and has 2681a much larger code and data size. 2682 2683 Previous Release: 2684 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2685 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2686 Current Release: 2687 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2688 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2689 2690 26912) iASL Compiler/Disassembler: 2692 2693Implemented support to allow multiple files to be compiled/disassembled in a 2694single invocation. This includes command line wildcard support for both the 2695Windows and Unix versions of the compiler. This feature simplifies the 2696disassembly and compilation of multiple ACPI tables in a single directory. 2697 2698---------------------------------------- 269908 May 2007. Summary of changes for version 20070508: 2700 27011) ACPI CA Core Subsystem: 2702 2703Implemented a Microsoft compatibility design change for the handling of the 2704Notify AML operator. Previously, notify handlers were dispatched and 2705executed completely asynchronously in a deferred thread. The new design 2706still executes the notify handlers in a different thread, but the original 2707thread that executed the Notify() now waits at a synchronization point for 2708the notify handler to complete. Some machines depend on a synchronous Notify 2709operator in order to operate correctly. 2710 2711Implemented support to allow Package objects to be passed as method 2712arguments to the external AcpiEvaluateObject interface. Previously, this 2713would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2714implemented since there were no reserved control methods that required it 2715until recently. 2716 2717Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2718contained invalid non-zero values in reserved fields could cause later 2719failures because these fields have meaning in later revisions of the FADT. 2720For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2721are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2722 2723Fixed a problem where the Global Lock handle was not properly updated if a 2724thread that acquired the Global Lock via executing AML code then attempted 2725to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2726Liu. 2727 2728Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2729could be corrupted if the interrupt being removed was at the head of the 2730list. Reported by Linn Crosetto. 2731 2732Example Code and Data Size: These are the sizes for the OS-independent 2733acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2734debug version of the code includes the debug output trace mechanism and has 2735a much larger code and data size. 2736 2737 Previous Release: 2738 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2739 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2740 Current Release: 2741 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2742 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2743 2744---------------------------------------- 274520 March 2007. Summary of changes for version 20070320: 2746 27471) ACPI CA Core Subsystem: 2748 2749Implemented a change to the order of interpretation and evaluation of AML 2750operand objects within the AML interpreter. The interpreter now evaluates 2751operands in the order that they appear in the AML stream (and the 2752corresponding ASL code), instead of in the reverse order (after the entire 2753operand list has been parsed). The previous behavior caused several subtle 2754incompatibilities with the Microsoft AML interpreter as well as being 2755somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2756 2757Implemented a change to the ACPI Global Lock support. All interfaces to the 2758global lock now allow the same thread to acquire the lock multiple times. 2759This affects the AcpiAcquireGlobalLock external interface to the global lock 2760as well as the internal use of the global lock to support AML fields -- a 2761control method that is holding the global lock can now simultaneously access 2762AML fields that require global lock protection. Previously, in both cases, 2763this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2764AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2765Controller. There is no change to the behavior of the AML Acquire operator, 2766as this can already be used to acquire a mutex multiple times by the same 2767thread. BZ 8066. With assistance from Alexey Starikovskiy. 2768 2769Fixed a problem where invalid objects could be referenced in the AML 2770Interpreter after error conditions. During operand evaluation, ensure that 2771the internal "Return Object" field is cleared on error and only valid 2772pointers are stored there. Caused occasional access to deleted objects that 2773resulted in "large reference count" warning messages. Valery Podrezov. 2774 2775Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2776deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2777Podrezov. 2778 2779Fixed an internal problem with the handling of result objects on the 2780interpreter result stack. BZ 7872. Valery Podrezov. 2781 2782Removed obsolete code that handled the case where AML_NAME_OP is the target 2783of a reference (Reference.Opcode). This code was no longer necessary. BZ 27847874. Valery Podrezov. 2785 2786Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2787remnant from the previously discontinued 16-bit support. 2788 2789Example Code and Data Size: These are the sizes for the OS-independent 2790acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2791debug version of the code includes the debug output trace mechanism and has 2792a much larger code and data size. 2793 2794 Previous Release: 2795 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2796 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2797 Current Release: 2798 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2799 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2800 2801---------------------------------------- 280226 January 2007. Summary of changes for version 20070126: 2803 28041) ACPI CA Core Subsystem: 2805 2806Added the 2007 copyright to all module headers and signons. This affects 2807virtually every file in the ACPICA core subsystem, the iASL compiler, and 2808the utilities. 2809 2810Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2811during a table load. A bad pointer was passed in the case where the DSDT is 2812overridden, causing a fault in this case. 2813 2814Example Code and Data Size: These are the sizes for the OS-independent 2815acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2816debug version of the code includes the debug output trace mechanism and has 2817a much larger code and data size. 2818 2819 Previous Release: 2820 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2821 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2822 Current Release: 2823 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2824 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2825 2826---------------------------------------- 282715 December 2006. Summary of changes for version 20061215: 2828 28291) ACPI CA Core Subsystem: 2830 2831Support for 16-bit ACPICA has been completely removed since it is no longer 2832necessary and it clutters the code. All 16-bit macros, types, and 2833conditional compiles have been removed, cleaning up and simplifying the code 2834across the entire subsystem. DOS support is no longer needed since the 2835bootable Linux firmware kit is now available. 2836 2837The handler for the Global Lock is now removed during AcpiTerminate to 2838enable a clean subsystem restart, via the implementation of the 2839AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2840HP) 2841 2842Implemented enhancements to the multithreading support within the debugger 2843to enable improved multithreading debugging and evaluation of the subsystem. 2844(Valery Podrezov) 2845 2846Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2847memory used during the execution, as well as the maximum memory consumed by 2848each of the various object types. (Valery Podrezov) 2849 2850Example Code and Data Size: These are the sizes for the OS-independent 2851acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2852debug version of the code includes the debug output trace mechanism and has 2853a much larger code and data size. 2854 2855 Previous Release: 2856 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2857 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2858 Current Release: 2859 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2860 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2861 2862 28632) iASL Compiler/Disassembler and Tools: 2864 2865AcpiExec: Implemented a new option (-m) to display full memory use 2866statistics upon subsystem/program termination. (Valery Podrezov) 2867 2868---------------------------------------- 286909 November 2006. Summary of changes for version 20061109: 2870 28711) ACPI CA Core Subsystem: 2872 2873Optimized the Load ASL operator in the case where the source operand is an 2874operation region. Simply map the operation region memory, instead of 2875performing a bytewise read. (Region must be of type SystemMemory, see 2876below.) 2877 2878Fixed the Load ASL operator for the case where the source operand is a 2879region field. A buffer object is also allowed as the source operand. BZ 480 2880 2881Fixed a problem where the Load ASL operator allowed the source operand to be 2882an operation region of any type. It is now restricted to regions of type 2883SystemMemory, as per the ACPI specification. BZ 481 2884 2885Additional cleanup and optimizations for the new Table Manager code. 2886 2887AcpiEnable will now fail if all of the required ACPI tables are not loaded 2888(FADT, FACS, DSDT). BZ 477 2889 2890Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2891header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2892manually optimized to be aligned and will not work if it is byte-packed. 2893 2894Example Code and Data Size: These are the sizes for the OS-independent 2895acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2896debug version of the code includes the debug output trace mechanism and has 2897a much larger code and data size. 2898 2899 Previous Release: 2900 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2901 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2902 Current Release: 2903 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2904 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2905 2906 29072) iASL Compiler/Disassembler and Tools: 2908 2909Fixed a problem where the presence of the _OSI predefined control method 2910within complex expressions could cause an internal compiler error. 2911 2912AcpiExec: Implemented full region support for multiple address spaces. 2913SpaceId is now part of the REGION object. BZ 429 2914 2915---------------------------------------- 291611 October 2006. Summary of changes for version 20061011: 2917 29181) ACPI CA Core Subsystem: 2919 2920Completed an AML interpreter performance enhancement for control method 2921execution. Previously a 2-pass parse/execution, control methods are now 2922completely parsed and executed in a single pass. This improves overall 2923interpreter performance by ~25%, reduces code size, and reduces CPU stack 2924use. (Valery Podrezov + interpreter changes in version 20051202 that 2925eliminated namespace loading during the pass one parse.) 2926 2927Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2928match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2929obtained and also checked for an ID match. 2930 2931Implemented additional support for the PCI _ADR execution: upsearch until a 2932device scope is found before executing _ADR. This allows PCI_Config 2933operation regions to be declared locally within control methods underneath 2934PCI device objects. 2935 2936Fixed a problem with a possible race condition between threads executing 2937AcpiWalkNamespace and the AML interpreter. This condition was removed by 2938modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2939entries created during any concurrent control method execution. An 2940additional namespace race condition is known to exist between 2941AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2942investigation. 2943 2944Restructured the AML ParseLoop function, breaking it into several 2945subfunctions in order to reduce CPU stack use and improve maintainability. 2946(Mikhail Kouzmich) 2947 2948AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2949of prefix handle and pathname. BZ 478 2950 2951Example Code and Data Size: These are the sizes for the OS-independent 2952acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2953debug version of the code includes the debug output trace mechanism and has 2954a much larger code and data size. 2955 2956 Previous Release: 2957 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2958 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2959 Current Release: 2960 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2961 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2962 29632) iASL Compiler/Disassembler and Tools: 2964 2965Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2966to restore original behavior. 2967 2968---------------------------------------- 296927 September 2006. Summary of changes for version 20060927: 2970 29711) ACPI CA Core Subsystem: 2972 2973Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2974These functions now use a spinlock for mutual exclusion and the interrupt 2975level indication flag is not needed. 2976 2977Fixed a problem with the Global Lock where the lock could appear to be 2978obtained before it is actually obtained. The global lock semaphore was 2979inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2980Suietov. 2981 2982Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2983a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2984 2985Example Code and Data Size: These are the sizes for the OS-independent 2986acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2987debug version of the code includes the debug output trace mechanism and has 2988a much larger code and data size. 2989 2990 Previous Release: 2991 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2992 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2993 Current Release: 2994 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2995 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2996 2997 29982) iASL Compiler/Disassembler and Tools: 2999 3000Fixed a compilation problem with the pre-defined Resource Descriptor field 3001names where an "object does not exist" error could be incorrectly generated 3002if the parent ResourceTemplate pathname places the template within a 3003different namespace scope than the current scope. (BZ 7212) 3004 3005Fixed a problem where the compiler could hang after syntax errors detected 3006in an ElseIf construct. (BZ 453) 3007 3008Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3009operator. An incorrect output filename was produced when this parameter was 3010a null string (""). Now, the original input filename is used as the AML 3011output filename, with an ".aml" extension. 3012 3013Implemented a generic batch command mode for the AcpiExec utility (execute 3014any AML debugger command) (Valery Podrezov). 3015 3016---------------------------------------- 301712 September 2006. Summary of changes for version 20060912: 3018 30191) ACPI CA Core Subsystem: 3020 3021Enhanced the implementation of the "serialized mode" of the interpreter 3022(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3023specified, instead of creating a serialization semaphore per control method, 3024the interpreter lock is simply no longer released before a blocking 3025operation during control method execution. This effectively makes the AML 3026Interpreter single-threaded. The overhead of a semaphore per-method is 3027eliminated. 3028 3029Fixed a regression where an error was no longer emitted if a control method 3030attempts to create 2 objects of the same name. This once again returns 3031AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3032will dynamically serialize the control method to possible prevent future 3033errors. (BZ 440) 3034 3035Integrated a fix for a problem with PCI Express HID detection in the PCI 3036Config Space setup procedure. (BZ 7145) 3037 3038Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3039AcpiHwInitialize function - the FADT registers are now validated when the 3040table is loaded. 3041 3042Added two new warnings during FADT verification - 1) if the FADT is larger 3043than the largest known FADT version, and 2) if there is a mismatch between a 304432-bit block address and the 64-bit X counterpart (when both are non-zero.) 3045 3046Example Code and Data Size: These are the sizes for the OS-independent 3047acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3048debug version of the code includes the debug output trace mechanism and has 3049a much larger code and data size. 3050 3051 Previous Release: 3052 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3053 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3054 Current Release: 3055 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3056 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3057 3058 30592) iASL Compiler/Disassembler and Tools: 3060 3061Fixed a problem with the implementation of the Switch() operator where the 3062temporary variable was declared too close to the actual Switch, instead of 3063at method level. This could cause a problem if the Switch() operator is 3064within a while loop, causing an error on the second iteration. (BZ 460) 3065 3066Disassembler - fix for error emitted for unknown type for target of scope 3067operator. Now, ignore it and continue. 3068 3069Disassembly of an FADT now verifies the input FADT and reports any errors 3070found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3071 3072Disassembly of raw data buffers with byte initialization data now prefixes 3073each output line with the current buffer offset. 3074 3075Disassembly of ASF! table now includes all variable-length data fields at 3076the end of some of the subtables. 3077 3078The disassembler now emits a comment if a buffer appears to be a 3079ResourceTemplate, but cannot be disassembled as such because the EndTag does 3080not appear at the very end of the buffer. 3081 3082AcpiExec - Added the "-t" command line option to enable the serialized mode 3083of the AML interpreter. 3084 3085---------------------------------------- 308631 August 2006. Summary of changes for version 20060831: 3087 30881) ACPI CA Core Subsystem: 3089 3090Miscellaneous fixes for the Table Manager: 3091- Correctly initialize internal common FADT for all 64-bit "X" fields 3092- Fixed a couple table mapping issues during table load 3093- Fixed a couple alignment issues for IA64 3094- Initialize input array to zero in AcpiInitializeTables 3095- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3096AcpiGetTableByIndex 3097 3098Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3099immediately disabled to prevent the waking GPE from firing again and to 3100prevent other wake GPEs from interrupting the wake process. 3101 3102Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3103be used for debugging systems with a large number of ACPI interrupts. 3104 3105Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3106both the ACPICA headers and the disassembler. 3107 3108Example Code and Data Size: These are the sizes for the OS-independent 3109acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3110debug version of the code includes the debug output trace mechanism and has 3111a much larger code and data size. 3112 3113 Previous Release: 3114 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3115 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3116 Current Release: 3117 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3118 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3119 3120 31212) iASL Compiler/Disassembler and Tools: 3122 3123Disassembler support for the DMAR ACPI table. 3124 3125---------------------------------------- 312623 August 2006. Summary of changes for version 20060823: 3127 31281) ACPI CA Core Subsystem: 3129 3130The Table Manager component has been completely redesigned and 3131reimplemented. The new design is much simpler, and reduces the overall code 3132and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3133now possible to obtain the ACPI tables very early during kernel 3134initialization, even before dynamic memory management is initialized. 3135(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3136 3137Obsolete ACPICA interfaces: 3138 3139- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3140time). 3141- AcpiLoadTable: Not needed. 3142- AcpiUnloadTable: Not needed. 3143 3144New ACPICA interfaces: 3145 3146- AcpiInitializeTables: Must be called before the table manager can be used. 3147- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3148allocated memory after it becomes available. 3149- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3150in the RSDT/XSDT. 3151 3152Other ACPICA changes: 3153 3154- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3155AcpiOsUnmapMemory to free this mapping. 3156- AcpiGetTable returns the actual mapped table. The mapping is managed 3157internally and must not be deleted by the caller. Use of this interface 3158causes no additional dynamic memory allocation. 3159- AcpiFindRootPointer: Support for physical addressing has been eliminated, 3160it appeared to be unused. 3161- The interface to AcpiOsMapMemory has changed to be consistent with the 3162other allocation interfaces. 3163- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3164parameters. 3165- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3166bit platforms. Was previously 64 bits on all platforms. 3167- The interface to the ACPI Global Lock acquire/release macros have changed 3168slightly since ACPICA no longer keeps a local copy of the FACS with a 3169constructed pointer to the actual global lock. 3170 3171Porting to the new table manager: 3172 3173- AcpiInitializeTables: Must be called once, and can be called anytime 3174during the OS initialization process. It allows the host to specify an area 3175of memory to be used to store the internal version of the RSDT/XSDT (root 3176table). This allows the host to access ACPI tables before memory management 3177is initialized and running. 3178- AcpiReallocateRootTable: Can be called after memory management is running 3179to copy the root table to a dynamically allocated array, freeing up the 3180scratch memory specified in the call to AcpiInitializeTables. 3181- AcpiSubsystemInitialize: This existing interface is independent of the 3182Table Manager, and does not have to be called before the Table Manager can 3183be used, it only must be called before the rest of ACPICA can be used. 3184- ACPI Tables: Some changes have been made to the names and structure of the 3185actbl.h and actbl1.h header files and may require changes to existing code. 3186For example, bitfields have been completely removed because of their lack of 3187portability across C compilers. 3188- Update interfaces to the Global Lock acquire/release macros if local 3189versions are used. (see acwin.h) 3190 3191Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3192 3193New files: tbfind.c 3194 3195Example Code and Data Size: These are the sizes for the OS-independent 3196acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3197debug version of the code includes the debug output trace mechanism and has 3198a much larger code and data size. 3199 3200 Previous Release: 3201 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3202 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3203 Current Release: 3204 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3205 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3206 3207 32082) iASL Compiler/Disassembler and Tools: 3209 3210No changes for this release. 3211 3212---------------------------------------- 321321 July 2006. Summary of changes for version 20060721: 3214 32151) ACPI CA Core Subsystem: 3216 3217The full source code for the ASL test suite used to validate the iASL 3218compiler and the ACPICA core subsystem is being released with the ACPICA 3219source for the first time. The source is contained in a separate package and 3220consists of over 1100 files that exercise all ASL/AML operators. The package 3221should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3222Suietov) 3223 3224Completed a new design and implementation for support of the ACPI Global 3225Lock. On the OS side, the global lock is now treated as a standard AML 3226mutex. Previously, multiple OS threads could "acquire" the global lock 3227simultaneously. However, this could cause the BIOS to be starved out of the 3228lock - especially in cases such as the Embedded Controller driver where 3229there is a tight coupling between the OS and the BIOS. 3230 3231Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3232The Global Lock interrupt handler no longer queues the execution of a 3233separate thread to signal the global lock semaphore. Instead, the semaphore 3234is signaled directly from the interrupt handler. 3235 3236Implemented support within the AML interpreter for package objects that 3237contain a larger AML length (package list length) than the package element 3238count. In this case, the length of the package is truncated to match the 3239package element count. Some BIOS code apparently modifies the package length 3240on the fly, and this change supports this behavior. Provides compatibility 3241with the MS AML interpreter. (With assistance from Fiodor Suietov) 3242 3243Implemented a temporary fix for the BankValue parameter of a Bank Field to 3244support all constant values, now including the Zero and One opcodes. 3245Evaluation of this parameter must eventually be converted to a full TermArg 3246evaluation. A not-implemented error is now returned (temporarily) for non- 3247constant values for this parameter. 3248 3249Fixed problem reports (Fiodor Suietov) integrated: 3250- Fix for premature object deletion after CopyObject on Operation Region (BZ 3251350) 3252 3253Example Code and Data Size: These are the sizes for the OS-independent 3254acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3255debug version of the code includes the debug output trace mechanism and has 3256a much larger code and data size. 3257 3258 Previous Release: 3259 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3260 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3261 Current Release: 3262 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3263 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3264 3265 32662) iASL Compiler/Disassembler and Tools: 3267 3268No changes for this release. 3269 3270---------------------------------------- 327107 July 2006. Summary of changes for version 20060707: 3272 32731) ACPI CA Core Subsystem: 3274 3275Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3276that do not allow the initialization of address pointers within packed 3277structures - even though the hardware itself may support misaligned 3278transfers. Some of the debug data structures are packed by default to 3279minimize size. 3280 3281Added an error message for the case where AcpiOsGetThreadId() returns zero. 3282A non-zero value is required by the core ACPICA code to ensure the proper 3283operation of AML mutexes and recursive control methods. 3284 3285The DSDT is now the only ACPI table that determines whether the AML 3286interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3287the hooks for per-table 32/64 switching have been removed from the code. A 3288clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3289 3290Fixed a possible leak of an OwnerID in the error path of 3291AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3292deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3293when using the AcpiTbDeleteTablesByType interface (with assistance from 3294Lance Ortiz.) 3295 3296Fixed a problem with Serialized control methods where the semaphore 3297associated with the method could be over-signaled after multiple method 3298invocations. 3299 3300Fixed two issues with the locking of the internal namespace data structure. 3301Both the Unload() operator and AcpiUnloadTable interface now lock the 3302namespace during the namespace deletion associated with the table unload 3303(with assistance from Linn Crosetto.) 3304 3305Fixed problem reports (Valery Podrezov) integrated: 3306- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3307 3308Fixed problem reports (Fiodor Suietov) integrated: 3309- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3310- On Address Space handler deletion, needless deactivation call (BZ 374) 3311- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3312- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3313(BZ 376) 3314- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3315- Minimum Length of RSDT should be validated (BZ 379) 3316- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3317Handler (BZ (380) 3318- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3319(BZ 381) 3320 3321Example Code and Data Size: These are the sizes for the OS-independent 3322acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3323debug version of the code includes the debug output trace mechanism and has 3324a much larger code and data size. 3325 3326 Previous Release: 3327 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3328 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3329 Current Release: 3330 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3331 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3332 3333 33342) iASL Compiler/Disassembler and Tools: 3335 3336Fixed problem reports: 3337Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3338436) 3339 3340---------------------------------------- 334123 June 2006. Summary of changes for version 20060623: 3342 33431) ACPI CA Core Subsystem: 3344 3345Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3346allows the type to be customized to the host OS for improved efficiency 3347(since a spinlock is usually a very small object.) 3348 3349Implemented support for "ignored" bits in the ACPI registers. According to 3350the ACPI specification, these bits should be preserved when writing the 3351registers via a read/modify/write cycle. There are 3 bits preserved in this 3352manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3353 3354Implemented the initial deployment of new OSL mutex interfaces. Since some 3355host operating systems have separate mutex and semaphore objects, this 3356feature was requested. The base code now uses mutexes (and the new mutex 3357interfaces) wherever a binary semaphore was used previously. However, for 3358the current release, the mutex interfaces are defined as macros to map them 3359to the existing semaphore interfaces. Therefore, no OSL changes are required 3360at this time. (See acpiosxf.h) 3361 3362Fixed several problems with the support for the control method SyncLevel 3363parameter. The SyncLevel now works according to the ACPI specification and 3364in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3365is a property of the executing thread. Mutual exclusion for control methods 3366is now implemented with a mutex instead of a semaphore. 3367 3368Fixed three instances of the use of the C shift operator in the bitfield 3369support code (exfldio.c) to avoid the use of a shift value larger than the 3370target data width. The behavior of C compilers is undefined in this case and 3371can cause unpredictable results, and therefore the case must be detected and 3372avoided. (Fiodor Suietov) 3373 3374Added an info message whenever an SSDT or OEM table is loaded dynamically 3375via the Load() or LoadTable() ASL operators. This should improve debugging 3376capability since it will show exactly what tables have been loaded (beyond 3377the tables present in the RSDT/XSDT.) 3378 3379Example Code and Data Size: These are the sizes for the OS-independent 3380acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3381debug version of the code includes the debug output trace mechanism and has 3382a much larger code and data size. 3383 3384 Previous Release: 3385 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3386 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3387 Current Release: 3388 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3389 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3390 3391 33922) iASL Compiler/Disassembler and Tools: 3393 3394No changes for this release. 3395 3396---------------------------------------- 339708 June 2006. Summary of changes for version 20060608: 3398 33991) ACPI CA Core Subsystem: 3400 3401Converted the locking mutex used for the ACPI hardware to a spinlock. This 3402change should eliminate all problems caused by attempting to acquire a 3403semaphore at interrupt level, and it means that all ACPICA external 3404interfaces that directly access the ACPI hardware can be safely called from 3405interrupt level. OSL code that implements the semaphore interfaces should be 3406able to eliminate any workarounds for being called at interrupt level. 3407 3408Fixed a regression introduced in 20060526 where the ACPI device 3409initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3410did not have an optional _INI method. 3411 3412Fixed an IndexField issue where a write to the Data Register should be 3413limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3414Fiodor Suietov) 3415 3416Fixed problem reports (Valery Podrezov) integrated: 3417- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3418 3419Fixed problem reports (Fiodor Suietov) integrated: 3420- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3421 3422Removed four global mutexes that were obsolete and were no longer being 3423used. 3424 3425Example Code and Data Size: These are the sizes for the OS-independent 3426acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3427debug version of the code includes the debug output trace mechanism and has 3428a much larger code and data size. 3429 3430 Previous Release: 3431 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3432 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3433 Current Release: 3434 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3435 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3436 3437 34382) iASL Compiler/Disassembler and Tools: 3439 3440Fixed a fault when using -g option (get tables from registry) on Windows 3441machines. 3442 3443Fixed problem reports integrated: 3444- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3445- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3446Suietov) 3447- Global table revision override (-r) is ignored (BZ 413) 3448 3449---------------------------------------- 345026 May 2006. Summary of changes for version 20060526: 3451 34521) ACPI CA Core Subsystem: 3453 3454Restructured, flattened, and simplified the internal interfaces for 3455namespace object evaluation - resulting in smaller code, less CPU stack use, 3456and fewer interfaces. (With assistance from Mikhail Kouzmich) 3457 3458Fixed a problem with the CopyObject operator where the first parameter was 3459not typed correctly for the parser, interpreter, compiler, and disassembler. 3460Caused various errors and unexpected behavior. 3461 3462Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3463produced incorrect results with some C compilers. Since the behavior of C 3464compilers when the shift value is larger than the datatype width is 3465apparently not well defined, the interpreter now detects this condition and 3466simply returns zero as expected in all such cases. (BZ 395) 3467 3468Fixed problem reports (Valery Podrezov) integrated: 3469- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3470- Allow interpreter to handle nested method declarations (BZ 5361) 3471 3472Fixed problem reports (Fiodor Suietov) integrated: 3473- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3474- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3475- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3476- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3477- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3478- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3479- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3480- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3481- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3482- Status of the Global Initialization Handler call not used (BZ 366) 3483- Incorrect object parameter to Global Initialization Handler (BZ 367) 3484 3485Example Code and Data Size: These are the sizes for the OS-independent 3486acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3487debug version of the code includes the debug output trace mechanism and has 3488a much larger code and data size. 3489 3490 Previous Release: 3491 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3492 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3493 Current Release: 3494 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3495 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3496 3497 34982) iASL Compiler/Disassembler and Tools: 3499 3500Modified the parser to allow the names IO, DMA, and IRQ to be used as 3501namespace identifiers with no collision with existing resource descriptor 3502macro names. This provides compatibility with other ASL compilers and is 3503most useful for disassembly/recompilation of existing tables without parse 3504errors. (With assistance from Thomas Renninger) 3505 3506Disassembler: fixed an incorrect disassembly problem with the 3507DataTableRegion and CopyObject operators. Fixed a possible fault during 3508disassembly of some Alias operators. 3509 3510---------------------------------------- 351112 May 2006. Summary of changes for version 20060512: 3512 35131) ACPI CA Core Subsystem: 3514 3515Replaced the AcpiOsQueueForExecution interface with a new interface named 3516AcpiOsExecute. The major difference is that the new interface does not have 3517a Priority parameter, this appeared to be useless and has been replaced by a 3518Type parameter. The Type tells the host what type of execution is being 3519requested, such as global lock handler, notify handler, GPE handler, etc. 3520This allows the host to queue and execute the request as appropriate for the 3521request type, possibly using different work queues and different priorities 3522for the various request types. This enables fixes for multithreading 3523deadlock problems such as BZ #5534, and will require changes to all existing 3524OS interface layers. (Alexey Starikovskiy and Bob Moore) 3525 3526Fixed a possible memory leak associated with the support for the so-called 3527"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3528Suietov) 3529 3530Fixed a problem with the Load() operator where a table load from an 3531operation region could overwrite an internal table buffer by up to 7 bytes 3532and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3533 3534Example Code and Data Size: These are the sizes for the OS-independent 3535acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3536debug version of the code includes the debug output trace mechanism and has 3537a much larger code and data size. 3538 3539 Previous Release: 3540 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3541 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3542 Current Release: 3543 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3544 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3545 3546 3547 35482) iASL Compiler/Disassembler and Tools: 3549 3550Disassembler: Implemented support to cross reference the internal namespace 3551and automatically generate ASL External() statements for symbols not defined 3552within the current table being disassembled. This will simplify the 3553disassembly and recompilation of interdependent tables such as SSDTs since 3554these statements will no longer have to be added manually. 3555 3556Disassembler: Implemented experimental support to automatically detect 3557invocations of external control methods and generate appropriate External() 3558statements. This is problematic because the AML cannot be correctly parsed 3559until the number of arguments for each control method is known. Currently, 3560standalone method invocations and invocations as the source operand of a 3561Store() statement are supported. 3562 3563Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3564LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3565LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3566more readable and likely closer to the original ASL source. 3567 3568---------------------------------------- 356921 April 2006. Summary of changes for version 20060421: 3570 35711) ACPI CA Core Subsystem: 3572 3573Removed a device initialization optimization introduced in 20051216 where 3574the _STA method was not run unless an _INI was also present for the same 3575device. This optimization could cause problems because it could allow _INI 3576methods to be run within a not-present device subtree. (If a not-present 3577device had no _INI, _STA would not be run, the not-present status would not 3578be discovered, and the children of the device would be incorrectly 3579traversed.) 3580 3581Implemented a new _STA optimization where namespace subtrees that do not 3582contain _INI are identified and ignored during device initialization. 3583Selectively running _STA can significantly improve boot time on large 3584machines (with assistance from Len Brown.) 3585 3586Implemented support for the device initialization case where the returned 3587_STA flags indicate a device not-present but functioning. In this case, _INI 3588is not run, but the device children are examined for presence, as per the 3589ACPI specification. 3590 3591Implemented an additional change to the IndexField support in order to 3592conform to MS behavior. The value written to the Index Register is not 3593simply a byte offset, it is a byte offset in units of the access width of 3594the parent Index Field. (Fiodor Suietov) 3595 3596Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3597interface is called during the creation of all AML operation regions, and 3598allows the host OS to exert control over what addresses it will allow the 3599AML code to access. Operation Regions whose addresses are disallowed will 3600cause a runtime exception when they are actually accessed (will not affect 3601or abort table loading.) See oswinxf or osunixxf for an example 3602implementation. 3603 3604Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3605interface allows the host OS to match the various "optional" 3606interface/behavior strings for the _OSI predefined control method as 3607appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3608for an example implementation. 3609 3610Restructured and corrected various problems in the exception handling code 3611paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3612(with assistance from Takayoshi Kochi.) 3613 3614Modified the Linux source converter to ignore quoted string literals while 3615converting identifiers from mixed to lower case. This will correct problems 3616with the disassembler and other areas where such strings must not be 3617modified. 3618 3619The ACPI_FUNCTION_* macros no longer require quotes around the function 3620name. This allows the Linux source converter to convert the names, now that 3621the converter ignores quoted strings. 3622 3623Example Code and Data Size: These are the sizes for the OS-independent 3624acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3625debug version of the code includes the debug output trace mechanism and has 3626a much larger code and data size. 3627 3628 Previous Release: 3629 3630 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3631 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3632 Current Release: 3633 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3634 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3635 3636 36372) iASL Compiler/Disassembler and Tools: 3638 3639Implemented 3 new warnings for iASL, and implemented multiple warning levels 3640(w2 flag). 3641 36421) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3643WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3644check for the possible timeout, a warning is issued. 3645 36462) Useless operators: If an ASL operator does not specify an optional target 3647operand and it also does not use the function return value from the 3648operator, a warning is issued since the operator effectively does nothing. 3649 36503) Unreferenced objects: If a namespace object is created, but never 3651referenced, a warning is issued. This is a warning level 2 since there are 3652cases where this is ok, such as when a secondary table is loaded that uses 3653the unreferenced objects. Even so, care is taken to only flag objects that 3654don't look like they will ever be used. For example, the reserved methods 3655(starting with an underscore) are usually not referenced because it is 3656expected that the OS will invoke them. 3657 3658---------------------------------------- 365931 March 2006. Summary of changes for version 20060331: 3660 36611) ACPI CA Core Subsystem: 3662 3663Implemented header file support for the following additional ACPI tables: 3664ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3665all current and known ACPI tables are now defined in the ACPICA headers and 3666are available for use by device drivers and other software. 3667 3668Implemented support to allow tables that contain ACPI names with invalid 3669characters to be loaded. Previously, this would cause the table load to 3670fail, but since there are several known cases of such tables on existing 3671machines, this change was made to enable ACPI support for them. Also, this 3672matches the behavior of the Microsoft ACPI implementation. 3673 3674Fixed a couple regressions introduced during the memory optimization in the 367520060317 release. The namespace node definition required additional 3676reorganization and an internal datatype that had been changed to 8-bit was 3677restored to 32-bit. (Valery Podrezov) 3678 3679Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3680could be passed through to AcpiOsReleaseObject which is unexpected. Such 3681null pointers are now trapped and ignored, matching the behavior of the 3682previous implementation before the deployment of AcpiOsReleaseObject. 3683(Valery Podrezov, Fiodor Suietov) 3684 3685Fixed a memory mapping leak during the deletion of a SystemMemory operation 3686region where a cached memory mapping was not deleted. This became a 3687noticeable problem for operation regions that are defined within frequently 3688used control methods. (Dana Meyers) 3689 3690Reorganized the ACPI table header files into two main files: one for the 3691ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3692ACPI tables that are consumed by the drivers and other software. The various 3693FADT definitions were merged into one common section and three different 3694tables (ACPI 1.0, 1.0+, and 2.0) 3695 3696Example Code and Data Size: These are the sizes for the OS-independent 3697acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3698debug version of the code includes the debug output trace mechanism and has 3699a much larger code and data size. 3700 3701 Previous Release: 3702 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3703 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3704 Current Release: 3705 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3706 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3707 3708 37092) iASL Compiler/Disassembler and Tools: 3710 3711Disassembler: Implemented support to decode and format all non-AML ACPI 3712tables (tables other than DSDTs and SSDTs.) This includes the new tables 3713added to the ACPICA headers, therefore all current and known ACPI tables are 3714supported. 3715 3716Disassembler: The change to allow ACPI names with invalid characters also 3717enables the disassembly of such tables. Invalid characters within names are 3718changed to '*' to make the name printable; the iASL compiler will still 3719generate an error for such names, however, since this is an invalid ACPI 3720character. 3721 3722Implemented an option for AcpiXtract (-a) to extract all tables found in the 3723input file. The default invocation extracts only the DSDTs and SSDTs. 3724 3725Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3726makefile for the AcpiXtract utility. 3727 3728---------------------------------------- 372917 March 2006. Summary of changes for version 20060317: 3730 37311) ACPI CA Core Subsystem: 3732 3733Implemented the use of a cache object for all internal namespace nodes. 3734Since there are about 1000 static nodes in a typical system, this will 3735decrease memory use for cache implementations that minimize per-allocation 3736overhead (such as a slab allocator.) 3737 3738Removed the reference count mechanism for internal namespace nodes, since it 3739was deemed unnecessary. This reduces the size of each namespace node by 3740about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3741and 32 bytes for the 64-bit case. 3742 3743Optimized several internal data structures to reduce object size on 64-bit 3744platforms by packing data within the 64-bit alignment. This includes the 3745frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3746instances corresponding to the namespace objects. 3747 3748Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3749and "Windows 2006". 3750 3751Split the allocation tracking mechanism out to a separate file, from 3752utalloc.c to uttrack.c. This mechanism appears to be only useful for 3753application-level code. Kernels may wish to not include uttrack.c in 3754distributions. 3755 3756Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3757code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3758macros.) 3759 3760Code and Data Size: These are the sizes for the acpica.lib produced by the 3761Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3762driver or OSPM code. The debug version of the code includes the debug output 3763trace mechanism and has a much larger code and data size. Note that these 3764values will vary depending on the efficiency of the compiler and the 3765compiler options used during generation. 3766 3767 Previous Release: 3768 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3769 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3770 Current Release: 3771 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3772 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3773 3774 37752) iASL Compiler/Disassembler and Tools: 3776 3777Implemented an ANSI C version of the acpixtract utility. This version will 3778automatically extract the DSDT and all SSDTs from the input acpidump text 3779file and dump the binary output to separate files. It can also display a 3780summary of the input file including the headers for each table found and 3781will extract any single ACPI table, with any signature. (See 3782source/tools/acpixtract) 3783 3784---------------------------------------- 378510 March 2006. Summary of changes for version 20060310: 3786 37871) ACPI CA Core Subsystem: 3788 3789Tagged all external interfaces to the subsystem with the new 3790ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3791kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3792macro. The default definition is NULL. 3793 3794Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3795This allows the host to define this as necessary to simplify kernel 3796integration. The default definition is ACPI_NATIVE_UINT. 3797 3798Fixed two interpreter problems related to error processing, the deletion of 3799objects, and placing invalid pointers onto the internal operator result 3800stack. BZ 6028, 6151 (Valery Podrezov) 3801 3802Increased the reference count threshold where a warning is emitted for large 3803reference counts in order to eliminate unnecessary warnings on systems with 3804large namespaces (especially 64-bit.) Increased the value from 0x400 to 38050x800. 3806 3807Due to universal disagreement as to the meaning of the 'c' in the calloc() 3808function, the ACPI_MEM_CALLOCATE macro has been renamed to 3809ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3810ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3811ACPI_FREE. 3812 3813Code and Data Size: These are the sizes for the acpica.lib produced by the 3814Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3815driver or OSPM code. The debug version of the code includes the debug output 3816trace mechanism and has a much larger code and data size. Note that these 3817values will vary depending on the efficiency of the compiler and the 3818compiler options used during generation. 3819 3820 Previous Release: 3821 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3822 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3823 Current Release: 3824 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3825 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3826 3827 38282) iASL Compiler/Disassembler: 3829 3830Disassembler: implemented support for symbolic resource descriptor 3831references. If a CreateXxxxField operator references a fixed offset within a 3832resource descriptor, a name is assigned to the descriptor and the offset is 3833translated to the appropriate resource tag and pathname. The addition of 3834this support brings the disassembled code very close to the original ASL 3835source code and helps eliminate run-time errors when the disassembled code 3836is modified (and recompiled) in such a way as to invalidate the original 3837fixed offsets. 3838 3839Implemented support for a Descriptor Name as the last parameter to the ASL 3840Register() macro. This parameter was inadvertently left out of the ACPI 3841specification, and will be added for ACPI 3.0b. 3842 3843Fixed a problem where the use of the "_OSI" string (versus the full path 3844"\_OSI") caused an internal compiler error. ("No back ptr to op") 3845 3846Fixed a problem with the error message that occurs when an invalid string is 3847used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3848The correct message is now displayed. 3849 3850---------------------------------------- 385117 February 2006. Summary of changes for version 20060217: 3852 38531) ACPI CA Core Subsystem: 3854 3855Implemented a change to the IndexField support to match the behavior of the 3856Microsoft AML interpreter. The value written to the Index register is now a 3857byte offset, no longer an index based upon the width of the Data register. 3858This should fix IndexField problems seen on some machines where the Data 3859register is not exactly one byte wide. The ACPI specification will be 3860clarified on this point. 3861 3862Fixed a problem where several resource descriptor types could overrun the 3863internal descriptor buffer due to size miscalculation: VendorShort, 3864VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3865affect all platforms. 3866 3867Fixed a problem where individual resource descriptors were misaligned within 3868the internal buffer, causing alignment faults on IA64 platforms. 3869 3870Code and Data Size: These are the sizes for the acpica.lib produced by the 3871Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3872driver or OSPM code. The debug version of the code includes the debug output 3873trace mechanism and has a much larger code and data size. Note that these 3874values will vary depending on the efficiency of the compiler and the 3875compiler options used during generation. 3876 3877 Previous Release: 3878 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3879 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3880 Current Release: 3881 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3882 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3883 3884 38852) iASL Compiler/Disassembler: 3886 3887Implemented support for new reserved names: _WDG and _WED are Microsoft 3888extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3889defined method (Throttling Depth Limit.) 3890 3891Fixed a problem where a zero-length VendorShort or VendorLong resource 3892descriptor was incorrectly emitted as a descriptor of length one. 3893 3894---------------------------------------- 389510 February 2006. Summary of changes for version 20060210: 3896 38971) ACPI CA Core Subsystem: 3898 3899Removed a couple of extraneous ACPI_ERROR messages that appeared during 3900normal execution. These became apparent after the conversion from 3901ACPI_DEBUG_PRINT. 3902 3903Fixed a problem where the CreateField operator could hang if the BitIndex or 3904NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3905 3906Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3907failed with an exception. This also fixes a couple of related RefOf and 3908DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3909 3910Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3911AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 39125480) 3913 3914Implemented a memory cleanup at the end of the execution of each iteration 3915of an AML While() loop, preventing the accumulation of outstanding objects. 3916(Valery Podrezov, BZ 5427) 3917 3918Eliminated a chunk of duplicate code in the object resolution code. (Valery 3919Podrezov, BZ 5336) 3920 3921Fixed several warnings during the 64-bit code generation. 3922 3923The AcpiSrc source code conversion tool now inserts one line of whitespace 3924after an if() statement that is followed immediately by a comment, improving 3925readability of the Linux code. 3926 3927Code and Data Size: The current and previous library sizes for the core 3928subsystem are shown below. These are the code and data sizes for the 3929acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3930values do not include any ACPI driver or OSPM code. The debug version of the 3931code includes the debug output trace mechanism and has a much larger code 3932and data size. Note that these values will vary depending on the efficiency 3933of the compiler and the compiler options used during generation. 3934 3935 Previous Release: 3936 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3937 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3938 Current Release: 3939 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3940 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3941 3942 39432) iASL Compiler/Disassembler: 3944 3945Fixed a problem with the disassembly of a BankField operator with a complex 3946expression for the BankValue parameter. 3947 3948---------------------------------------- 394927 January 2006. Summary of changes for version 20060127: 3950 39511) ACPI CA Core Subsystem: 3952 3953Implemented support in the Resource Manager to allow unresolved namestring 3954references within resource package objects for the _PRT method. This support 3955is in addition to the previously implemented unresolved reference support 3956within the AML parser. If the interpreter slack mode is enabled, these 3957unresolved references will be passed through to the caller as a NULL package 3958entry. 3959 3960Implemented and deployed new macros and functions for error and warning 3961messages across the subsystem. These macros are simpler and generate less 3962code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3963ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3964macros remain defined to allow ACPI drivers time to migrate to the new 3965macros. 3966 3967Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3968Acquire/Release Lock OSL interfaces. 3969 3970Fixed a problem where Alias ASL operators are sometimes not correctly 3971resolved, in both the interpreter and the iASL compiler. 3972 3973Fixed several problems with the implementation of the ConcatenateResTemplate 3974ASL operator. As per the ACPI specification, zero length buffers are now 3975treated as a single EndTag. One-length buffers always cause a fatal 3976exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3977cause a fatal exception. 3978 3979Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3980interface. (With assistance from Thomas Renninger) 3981 3982Code and Data Size: The current and previous library sizes for the core 3983subsystem are shown below. These are the code and data sizes for the 3984acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3985values do not include any ACPI driver or OSPM code. The debug version of the 3986code includes the debug output trace mechanism and has a much larger code 3987and data size. Note that these values will vary depending on the efficiency 3988of the compiler and the compiler options used during generation. 3989 3990 Previous Release: 3991 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3992 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3993 Current Release: 3994 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3995 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3996 3997 39982) iASL Compiler/Disassembler: 3999 4000Fixed an internal error that was generated for any forward references to ASL 4001Alias objects. 4002 4003---------------------------------------- 400413 January 2006. Summary of changes for version 20060113: 4005 40061) ACPI CA Core Subsystem: 4007 4008Added 2006 copyright to all module headers and signons. This affects 4009virtually every file in the ACPICA core subsystem, iASL compiler, and the 4010utilities. 4011 4012Enhanced the ACPICA error reporting in order to simplify user migration to 4013the non-debug version of ACPICA. Replaced all instances of the 4014ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4015levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4016respectively. This preserves all error and warning messages in the non-debug 4017version of the ACPICA code (this has been referred to as the "debug lite" 4018option.) Over 200 cases were converted to create a total of over 380 4019error/warning messages across the ACPICA code. This increases the code and 4020data size of the default non-debug version of the code somewhat (about 13K), 4021but all error/warning reporting may be disabled if desired (and code 4022eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4023configuration option. The size of the debug version of ACPICA remains about 4024the same. 4025 4026Fixed a memory leak within the AML Debugger "Set" command. One object was 4027not properly deleted for every successful invocation of the command. 4028 4029Code and Data Size: The current and previous library sizes for the core 4030subsystem are shown below. These are the code and data sizes for the 4031acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4032values do not include any ACPI driver or OSPM code. The debug version of the 4033code includes the debug output trace mechanism and has a much larger code 4034and data size. Note that these values will vary depending on the efficiency 4035of the compiler and the compiler options used during generation. 4036 4037 Previous Release: 4038 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4039 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4040 Current Release: 4041 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4042 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4043 4044 40452) iASL Compiler/Disassembler: 4046 4047The compiler now officially supports the ACPI 3.0a specification that was 4048released on December 30, 2005. (Specification is available at www.acpi.info) 4049 4050---------------------------------------- 405116 December 2005. Summary of changes for version 20051216: 4052 40531) ACPI CA Core Subsystem: 4054 4055Implemented optional support to allow unresolved names within ASL Package 4056objects. A null object is inserted in the package when a named reference 4057cannot be located in the current namespace. Enabled via the interpreter 4058slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4059that contain such code. 4060 4061Implemented an optimization to the initialization sequence that can improve 4062boot time. During ACPI device initialization, the _STA method is now run if 4063and only if the _INI method exists. The _STA method is used to determine if 4064the device is present; An _INI can only be run if _STA returns present, but 4065it is a waste of time to run the _STA method if the _INI does not exist. 4066(Prototype and assistance from Dong Wei) 4067 4068Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4069available in the current compiler. Otherwise, the default (void *) cast is 4070used as before. 4071 4072Fixed some possible memory leaks found within the execution path of the 4073Break, Continue, If, and CreateField operators. (Valery Podrezov) 4074 4075Fixed a problem introduced in the 20051202 release where an exception is 4076generated during method execution if a control method attempts to declare 4077another method. 4078 4079Moved resource descriptor string constants that are used by both the AML 4080disassembler and AML debugger to the common utilities directory so that 4081these components are independent. 4082 4083Implemented support in the AcpiExec utility (-e switch) to globally ignore 4084exceptions during control method execution (method is not aborted.) 4085 4086Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4087generation. 4088 4089Code and Data Size: The current and previous library sizes for the core 4090subsystem are shown below. These are the code and data sizes for the 4091acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4092values do not include any ACPI driver or OSPM code. The debug version of the 4093code includes the debug output trace mechanism and has a much larger code 4094and data size. Note that these values will vary depending on the efficiency 4095of the compiler and the compiler options used during generation. 4096 4097 Previous Release: 4098 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4099 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4100 Current Release: 4101 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4102 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4103 4104 41052) iASL Compiler/Disassembler: 4106 4107Fixed a problem where a CPU stack overflow fault could occur if a recursive 4108method call was made from within a Return statement. 4109 4110---------------------------------------- 411102 December 2005. Summary of changes for version 20051202: 4112 41131) ACPI CA Core Subsystem: 4114 4115Modified the parsing of control methods to no longer create namespace 4116objects during the first pass of the parse. Objects are now created only 4117during the execute phase, at the moment the namespace creation operator is 4118encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4119should eliminate ALREADY_EXISTS exceptions seen on some machines where 4120reentrant control methods are protected by an AML mutex. The mutex will now 4121correctly block multiple threads from attempting to create the same object 4122more than once. 4123 4124Increased the number of available Owner Ids for namespace object tracking 4125from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4126some machines with a large number of ACPI tables (either static or dynamic). 4127 4128Fixed a problem with the AcpiExec utility where a fault could occur when the 4129-b switch (batch mode) is used. 4130 4131Enhanced the namespace dump routine to output the owner ID for each 4132namespace object. 4133 4134Code and Data Size: The current and previous library sizes for the core 4135subsystem are shown below. These are the code and data sizes for the 4136acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4137values do not include any ACPI driver or OSPM code. The debug version of the 4138code includes the debug output trace mechanism and has a much larger code 4139and data size. Note that these values will vary depending on the efficiency 4140of the compiler and the compiler options used during generation. 4141 4142 Previous Release: 4143 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4144 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4145 Current Release: 4146 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4147 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4148 4149 41502) iASL Compiler/Disassembler: 4151 4152Fixed a parse error during compilation of certain Switch/Case constructs. To 4153simplify the parse, the grammar now allows for multiple Default statements 4154and this error is now detected and flagged during the analysis phase. 4155 4156Disassembler: The disassembly now includes the contents of the original 4157table header within a comment at the start of the file. This includes the 4158name and version of the original ASL compiler. 4159 4160---------------------------------------- 416117 November 2005. Summary of changes for version 20051117: 4162 41631) ACPI CA Core Subsystem: 4164 4165Fixed a problem in the AML parser where the method thread count could be 4166decremented below zero if any errors occurred during the method parse phase. 4167This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4168This also fixed a related regression with the mechanism that detects and 4169corrects methods that cannot properly handle reentrancy (related to the 4170deployment of the new OwnerId mechanism.) 4171 4172Eliminated the pre-parsing of control methods (to detect errors) during 4173table load. Related to the problem above, this was causing unwind issues if 4174any errors occurred during the parse, and it seemed to be overkill. A table 4175load should not be aborted if there are problems with any single control 4176method, thus rendering this feature rather pointless. 4177 4178Fixed a problem with the new table-driven resource manager where an internal 4179buffer overflow could occur for small resource templates. 4180 4181Implemented a new external interface, AcpiGetVendorResource. This interface 4182will find and return a vendor-defined resource descriptor within a _CRS or 4183_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4184 4185Removed the length limit (200) on string objects as per the upcoming ACPI 41863.0A specification. This affects the following areas of the interpreter: 1) 4187any implicit conversion of a Buffer to a String, 2) a String object result 4188of the ASL Concatentate operator, 3) the String object result of the ASL 4189ToString operator. 4190 4191Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4192on a semaphore object would incorrectly timeout. This allows the 4193multithreading features of the AcpiExec utility to work properly under 4194Windows. 4195 4196Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4197the recently added file named "utresrc.c". 4198 4199Code and Data Size: The current and previous library sizes for the core 4200subsystem are shown below. These are the code and data sizes for the 4201acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4202values do not include any ACPI driver or OSPM code. The debug version of the 4203code includes the debug output trace mechanism and has a much larger code 4204and data size. Note that these values will vary depending on the efficiency 4205of the compiler and the compiler options used during generation. 4206 4207 Previous Release: 4208 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4209 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4210 Current Release: 4211 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4212 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4213 4214 42152) iASL Compiler/Disassembler: 4216 4217Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4218specification. For the iASL compiler, this means that string literals within 4219the source ASL can be of any length. 4220 4221Enhanced the listing output to dump the AML code for resource descriptors 4222immediately after the ASL code for each descriptor, instead of in a block at 4223the end of the entire resource template. 4224 4225Enhanced the compiler debug output to dump the entire original parse tree 4226constructed during the parse phase, before any transforms are applied to the 4227tree. The transformed tree is dumped also. 4228 4229---------------------------------------- 423002 November 2005. Summary of changes for version 20051102: 4231 42321) ACPI CA Core Subsystem: 4233 4234Modified the subsystem initialization sequence to improve GPE support. The 4235GPE initialization has been split into two parts in order to defer execution 4236of the _PRW methods (Power Resources for Wake) until after the hardware is 4237fully initialized and the SCI handler is installed. This allows the _PRW 4238methods to access fields protected by the Global Lock. This will fix systems 4239where a NO_GLOBAL_LOCK exception has been seen during initialization. 4240 4241Converted the ACPI internal object disassemble and display code within the 4242AML debugger to fully table-driven operation, reducing code size and 4243increasing maintainability. 4244 4245Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4246in the 20051021 release. 4247 4248Implemented support for "local" internal ACPI object types within the 4249debugger "Object" command and the AcpiWalkNamespace external interfaces. 4250These local types include RegionFields, BankFields, IndexFields, Alias, and 4251reference objects. 4252 4253Moved common AML resource handling code into a new file, "utresrc.c". This 4254code is shared by both the Resource Manager and the AML Debugger. 4255 4256Code and Data Size: The current and previous library sizes for the core 4257subsystem are shown below. These are the code and data sizes for the 4258acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4259values do not include any ACPI driver or OSPM code. The debug version of the 4260code includes the debug output trace mechanism and has a much larger code 4261and data size. Note that these values will vary depending on the efficiency 4262of the compiler and the compiler options used during generation. 4263 4264 Previous Release: 4265 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4266 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4267 Current Release: 4268 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4269 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4270 4271 42722) iASL Compiler/Disassembler: 4273 4274Fixed a problem with very large initializer lists (more than 4000 elements) 4275for both Buffer and Package objects where the parse stack could overflow. 4276 4277Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4278characters within comment fields. The scan is now always performed and is no 4279longer optional, detecting invalid characters within a source file 4280immediately rather than during the parse phase or later. 4281 4282Enhanced the ASL grammar definition to force early reductions on all list- 4283style grammar elements so that the overall parse stack usage is greatly 4284reduced. This should improve performance and reduce the possibility of parse 4285stack overflow. 4286 4287Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4288with the addition of a %expected statement, the compiler generates from 4289source with no warnings. 4290 4291Fixed a possible segment fault in the disassembler if the input filename 4292does not contain a "dot" extension (Thomas Renninger). 4293 4294---------------------------------------- 429521 October 2005. Summary of changes for version 20051021: 4296 42971) ACPI CA Core Subsystem: 4298 4299Implemented support for the EM64T and other x86-64 processors. This 4300essentially entails recognizing that these processors support non-aligned 4301memory transfers. Previously, all 64-bit processors were assumed to lack 4302hardware support for non-aligned transfers. 4303 4304Completed conversion of the Resource Manager to nearly full table-driven 4305operation. Specifically, the resource conversion code (convert AML to 4306internal format and the reverse) and the debug code to dump internal 4307resource descriptors are fully table-driven, reducing code and data size and 4308improving maintainability. 4309 4310The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4311on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4312Alexey Starikovskiy) 4313 4314Implemented support within the resource conversion code for the Type- 4315Specific byte within the various ACPI 3.0 *WordSpace macros. 4316 4317Fixed some issues within the resource conversion code for the type-specific 4318flags for both Memory and I/O address resource descriptors. For Memory, 4319implemented support for the MTP and TTP flags. For I/O, split the TRS and 4320TTP flags into two separate fields. 4321 4322Code and Data Size: The current and previous library sizes for the core 4323subsystem are shown below. These are the code and data sizes for the 4324acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4325values do not include any ACPI driver or OSPM code. The debug version of the 4326code includes the debug output trace mechanism and has a much larger code 4327and data size. Note that these values will vary depending on the efficiency 4328of the compiler and the compiler options used during generation. 4329 4330 Previous Release: 4331 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4332 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4333 Current Release: 4334 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4335 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4336 4337 4338 43392) iASL Compiler/Disassembler: 4340 4341Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4342corresponding ResourceSource string was not also present in a resource 4343descriptor declaration. This restriction caused problems with existing 4344AML/ASL code that includes the Index byte without the string. When such AML 4345was disassembled, it could not be compiled without modification. Further, 4346the modified code created a resource template with a different size than the 4347original, breaking code that used fixed offsets into the resource template 4348buffer. 4349 4350Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4351byte. This byte is now emitted if present so that the exact AML can be 4352reproduced when the disassembled code is recompiled. 4353 4354Improved comments and text alignment for the resource descriptor code 4355emitted by the disassembler. 4356 4357Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4358Register() resource descriptor. 4359 4360---------------------------------------- 436130 September 2005. Summary of changes for version 20050930: 4362 43631) ACPI CA Core Subsystem: 4364 4365Completed a major overhaul of the Resource Manager code - specifically, 4366optimizations in the area of the AML/internal resource conversion code. The 4367code has been optimized to simplify and eliminate duplicated code, CPU stack 4368use has been decreased by optimizing function parameters and local 4369variables, and naming conventions across the manager have been standardized 4370for clarity and ease of maintenance (this includes function, parameter, 4371variable, and struct/typedef names.) The update may force changes in some 4372driver code, depending on how resources are handled by the host OS. 4373 4374All Resource Manager dispatch and information tables have been moved to a 4375single location for clarity and ease of maintenance. One new file was 4376created, named "rsinfo.c". 4377 4378The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4379guarantee that the argument is not evaluated twice, making them less prone 4380to macro side-effects. However, since there exists the possibility of 4381additional stack use if a particular compiler cannot optimize them (such as 4382in the debug generation case), the original macros are optionally available. 4383Note that some invocations of the return_VALUE macro may now cause size 4384mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4385eliminate these. (From Randy Dunlap) 4386 4387Implemented a new mechanism to enable debug tracing for individual control 4388methods. A new external interface, AcpiDebugTrace, is provided to enable 4389this mechanism. The intent is to allow the host OS to easily enable and 4390disable tracing for problematic control methods. This interface can be 4391easily exposed to a user or debugger interface if desired. See the file 4392psxface.c for details. 4393 4394AcpiUtCallocate will now return a valid pointer if a length of zero is 4395specified - a length of one is used and a warning is issued. This matches 4396the behavior of AcpiUtAllocate. 4397 4398Code and Data Size: The current and previous library sizes for the core 4399subsystem are shown below. These are the code and data sizes for the 4400acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4401values do not include any ACPI driver or OSPM code. The debug version of the 4402code includes the debug output trace mechanism and has a much larger code 4403and data size. Note that these values will vary depending on the efficiency 4404of the compiler and the compiler options used during generation. 4405 4406 Previous Release: 4407 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4408 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4409 Current Release: 4410 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4411 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4412 4413 44142) iASL Compiler/Disassembler: 4415 4416A remark is issued if the effective compile-time length of a package or 4417buffer is zero. Previously, this was a warning. 4418 4419---------------------------------------- 442016 September 2005. Summary of changes for version 20050916: 4421 44221) ACPI CA Core Subsystem: 4423 4424Fixed a problem within the Resource Manager where support for the Generic 4425Register descriptor was not fully implemented. This descriptor is now fully 4426recognized, parsed, disassembled, and displayed. 4427 4428Completely restructured the Resource Manager code to utilize table-driven 4429dispatch and lookup, eliminating many of the large switch() statements. This 4430reduces overall subsystem code size and code complexity. Affects the 4431resource parsing and construction, disassembly, and debug dump output. 4432 4433Cleaned up and restructured the debug dump output for all resource 4434descriptors. Improved readability of the output and reduced code size. 4435 4436Fixed a problem where changes to internal data structures caused the 4437optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4438 4439Code and Data Size: The current and previous library sizes for the core 4440subsystem are shown below. These are the code and data sizes for the 4441acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4442values do not include any ACPI driver or OSPM code. The debug version of the 4443code includes the debug output trace mechanism and has a much larger code 4444and data size. Note that these values will vary depending on the efficiency 4445of the compiler and the compiler options used during generation. 4446 4447 Previous Release: 4448 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4449 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4450 Current Release: 4451 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4452 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4453 4454 44552) iASL Compiler/Disassembler: 4456 4457Updated the disassembler to automatically insert an EndDependentFn() macro 4458into the ASL stream if this macro is missing in the original AML code, 4459simplifying compilation of the resulting ASL module. 4460 4461Fixed a problem in the disassembler where a disassembled ResourceSource 4462string (within a large resource descriptor) was not surrounded by quotes and 4463not followed by a comma, causing errors when the resulting ASL module was 4464compiled. Also, escape sequences within a ResourceSource string are now 4465handled correctly (especially "\\") 4466 4467---------------------------------------- 446802 September 2005. Summary of changes for version 20050902: 4469 44701) ACPI CA Core Subsystem: 4471 4472Fixed a problem with the internal Owner ID allocation and deallocation 4473mechanisms for control method execution and recursive method invocation. 4474This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4475messages seen on some systems. Recursive method invocation depth is 4476currently limited to 255. (Alexey Starikovskiy) 4477 4478Completely eliminated all vestiges of support for the "module-level 4479executable code" until this support is fully implemented and debugged. This 4480should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4481some systems that invoke this support. 4482 4483Fixed a problem within the resource manager code where the transaction flags 4484for a 64-bit address descriptor were handled incorrectly in the type- 4485specific flag byte. 4486 4487Consolidated duplicate code within the address descriptor resource manager 4488code, reducing overall subsystem code size. 4489 4490Fixed a fault when using the AML debugger "disassemble" command to 4491disassemble individual control methods. 4492 4493Removed references to the "release_current" directory within the Unix 4494release package. 4495 4496Code and Data Size: The current and previous core subsystem library sizes 4497are shown below. These are the code and data sizes for the acpica.lib 4498produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4499include any ACPI driver or OSPM code. The debug version of the code includes 4500the debug output trace mechanism and has a much larger code and data size. 4501Note that these values will vary depending on the efficiency of the compiler 4502and the compiler options used during generation. 4503 4504 Previous Release: 4505 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4506 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4507 Current Release: 4508 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4509 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4510 4511 45122) iASL Compiler/Disassembler: 4513 4514Implemented an error check for illegal duplicate values in the interrupt and 4515dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4516Interrupt(). 4517 4518Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4519too many values in the interrupt list (16 max) and invalid values in the 4520list (range 0 - 15) 4521 4522The maximum length string literal within an ASL file is now restricted to 4523200 characters as per the ACPI specification. 4524 4525Fixed a fault when using the -ln option (generate namespace listing). 4526 4527Implemented an error check to determine if a DescriptorName within a 4528resource descriptor has already been used within the current scope. 4529 4530---------------------------------------- 453115 August 2005. Summary of changes for version 20050815: 4532 45331) ACPI CA Core Subsystem: 4534 4535Implemented a full bytewise compare to determine if a table load request is 4536attempting to load a duplicate table. The compare is performed if the table 4537signatures and table lengths match. This will allow different tables with 4538the same OEM Table ID and revision to be loaded - probably against the ACPI 4539specification, but discovered in the field nonetheless. 4540 4541Added the changes.txt logfile to each of the zipped release packages. 4542 4543Code and Data Size: Current and previous core subsystem library sizes are 4544shown below. These are the code and data sizes for the acpica.lib produced 4545by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4546any ACPI driver or OSPM code. The debug version of the code includes the 4547debug output trace mechanism and has a much larger code and data size. Note 4548that these values will vary depending on the efficiency of the compiler and 4549the compiler options used during generation. 4550 4551 Previous Release: 4552 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4553 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4554 Current Release: 4555 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4556 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4557 4558 45592) iASL Compiler/Disassembler: 4560 4561Fixed a problem where incorrect AML code could be generated for Package 4562objects if optimization is disabled (via the -oa switch). 4563 4564Fixed a problem with where incorrect AML code is generated for variable- 4565length packages when the package length is not specified and the number of 4566initializer values is greater than 255. 4567 4568 4569---------------------------------------- 457029 July 2005. Summary of changes for version 20050729: 4571 45721) ACPI CA Core Subsystem: 4573 4574Implemented support to ignore an attempt to install/load a particular ACPI 4575table more than once. Apparently there exists BIOS code that repeatedly 4576attempts to load the same SSDT upon certain events. With assistance from 4577Venkatesh Pallipadi. 4578 4579Restructured the main interface to the AML parser in order to correctly 4580handle all exceptional conditions. This will prevent leakage of the OwnerId 4581resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4582machines. With assistance from Alexey Starikovskiy. 4583 4584Support for "module level code" has been disabled in this version due to a 4585number of issues that have appeared on various machines. The support can be 4586enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4587compilation. When the issues are fully resolved, the code will be enabled by 4588default again. 4589 4590Modified the internal functions for debug print support to define the 4591FunctionName parameter as a (const char *) for compatibility with compiler 4592built-in macros such as __FUNCTION__, etc. 4593 4594Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4595 4596Implemented support to display an object count summary for the AML Debugger 4597commands Object and Methods. 4598 4599Code and Data Size: Current and previous core subsystem library sizes are 4600shown below. These are the code and data sizes for the acpica.lib produced 4601by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4602any ACPI driver or OSPM code. The debug version of the code includes the 4603debug output trace mechanism and has a much larger code and data size. Note 4604that these values will vary depending on the efficiency of the compiler and 4605the compiler options used during generation. 4606 4607 Previous Release: 4608 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4609 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4610 Current Release: 4611 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4612 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4613 4614 46152) iASL Compiler/Disassembler: 4616 4617Fixed a regression that appeared in the 20050708 version of the compiler 4618where an error message was inadvertently emitted for invocations of the _OSI 4619reserved control method. 4620 4621---------------------------------------- 462208 July 2005. Summary of changes for version 20050708: 4623 46241) ACPI CA Core Subsystem: 4625 4626The use of the CPU stack in the debug version of the subsystem has been 4627considerably reduced. Previously, a debug structure was declared in every 4628function that used the debug macros. This structure has been removed in 4629favor of declaring the individual elements as parameters to the debug 4630functions. This reduces the cumulative stack use during nested execution of 4631ACPI function calls at the cost of a small increase in the code size of the 4632debug version of the subsystem. With assistance from Alexey Starikovskiy and 4633Len Brown. 4634 4635Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4636headers to define a macro that will return the current function name at 4637runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4638the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4639compiler-dependent header, the function name is saved on the CPU stack (one 4640pointer per function.) This mechanism is used because apparently there 4641exists no standard ANSI-C defined macro that that returns the function name. 4642 4643Redesigned and reimplemented the "Owner ID" mechanism used to track 4644namespace objects created/deleted by ACPI tables and control method 4645execution. A bitmap is now used to allocate and free the IDs, thus solving 4646the wraparound problem present in the previous implementation. The size of 4647the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4648Starikovskiy). 4649 4650Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4651flag definitions within the headers for the predefined ACPI tables. These 4652have been replaced by UINT8_BIT in order to increase the code portability of 4653the subsystem. If the use of UINT8 remains a problem, we may be forced to 4654eliminate bitfields entirely because of a lack of portability. 4655 4656Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4657is a frequently used function and this improvement increases the performance 4658of the entire subsystem (Alexey Starikovskiy). 4659 4660Fixed several possible memory leaks and the inverse - premature object 4661deletion (Alexey Starikovskiy). 4662 4663Code and Data Size: Current and previous core subsystem library sizes are 4664shown below. These are the code and data sizes for the acpica.lib produced 4665by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4666any ACPI driver or OSPM code. The debug version of the code includes the 4667debug output trace mechanism and has a much larger code and data size. Note 4668that these values will vary depending on the efficiency of the compiler and 4669the compiler options used during generation. 4670 4671 Previous Release: 4672 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4673 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4674 Current Release: 4675 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4676 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4677 4678---------------------------------------- 467924 June 2005. Summary of changes for version 20050624: 4680 46811) ACPI CA Core Subsystem: 4682 4683Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4684the host-defined cache object. This allows the OSL implementation to define 4685and type this object in any manner desired, simplifying the OSL 4686implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4687Linux, and should be defined in the OS-specific header file for other 4688operating systems as required. 4689 4690Changed the interface to AcpiOsAcquireObject to directly return the 4691requested object as the function return (instead of ACPI_STATUS.) This 4692change was made for performance reasons, since this is the purpose of the 4693interface in the first place. AcpiOsAcquireObject is now similar to the 4694AcpiOsAllocate interface. 4695 4696Implemented a new AML debugger command named Businfo. This command displays 4697information about all devices that have an associate _PRT object. The _ADR, 4698_HID, _UID, and _CID are displayed for these devices. 4699 4700Modified the initialization sequence in AcpiInitializeSubsystem to call the 4701OSL interface AcpiOslInitialize first, before any local initialization. This 4702change was required because the global initialization now calls OSL 4703interfaces. 4704 4705Enhanced the Dump command to display the entire contents of Package objects 4706(including all sub-objects and their values.) 4707 4708Restructured the code base to split some files because of size and/or 4709because the code logically belonged in a separate file. New files are listed 4710below. All makefiles and project files included in the ACPI CA release have 4711been updated. 4712 utilities/utcache.c /* Local cache interfaces */ 4713 utilities/utmutex.c /* Local mutex support */ 4714 utilities/utstate.c /* State object support */ 4715 interpreter/parser/psloop.c /* Main AML parse loop */ 4716 4717Code and Data Size: Current and previous core subsystem library sizes are 4718shown below. These are the code and data sizes for the acpica.lib produced 4719by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4720any ACPI driver or OSPM code. The debug version of the code includes the 4721debug output trace mechanism and has a much larger code and data size. Note 4722that these values will vary depending on the efficiency of the compiler and 4723the compiler options used during generation. 4724 4725 Previous Release: 4726 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4727 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4728 Current Release: 4729 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4730 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4731 4732 47332) iASL Compiler/Disassembler: 4734 4735Fixed a regression introduced in version 20050513 where the use of a Package 4736object within a Case() statement caused a compile time exception. The 4737original behavior has been restored (a Match() operator is emitted.) 4738 4739---------------------------------------- 474017 June 2005. Summary of changes for version 20050617: 4741 47421) ACPI CA Core Subsystem: 4743 4744Moved the object cache operations into the OS interface layer (OSL) to allow 4745the host OS to handle these operations if desired (for example, the Linux 4746OSL will invoke the slab allocator). This support is optional; the compile 4747time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4748code in the ACPI CA core. The new OSL interfaces are shown below. See 4749utalloc.c for an example implementation, and acpiosxf.h for the exact 4750interface definitions. With assistance from Alexey Starikovskiy. 4751 AcpiOsCreateCache 4752 AcpiOsDeleteCache 4753 AcpiOsPurgeCache 4754 AcpiOsAcquireObject 4755 AcpiOsReleaseObject 4756 4757Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4758and restore a flags parameter. This fits better with many OS lock models. 4759Note: the current execution state (interrupt handler or not) is no longer 4760passed to these interfaces. If necessary, the OSL must determine this state 4761by itself, a simple and fast operation. With assistance from Alexey 4762Starikovskiy. 4763 4764Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4765present if the revision of the RSDP was 2 or greater. According to the ACPI 4766specification, the XSDT is optional in all cases, and the table manager 4767therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4768Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4769only the RSDT. 4770 4771Fixed an interpreter problem with the Mid() operator in the case of an input 4772string where the resulting output string is of zero length. It now correctly 4773returns a valid, null terminated string object instead of a string object 4774with a null pointer. 4775 4776Fixed a problem with the control method argument handling to allow a store 4777to an Arg object that already contains an object of type Device. The Device 4778object is now correctly overwritten. Previously, an error was returned. 4779 4780 4781Enhanced the debugger Find command to emit object values in addition to the 4782found object pathnames. The output format is the same as the dump namespace 4783command. 4784 4785Enhanced the debugger Set command. It now has the ability to set the value 4786of any Named integer object in the namespace (Previously, only method locals 4787and args could be set.) 4788 4789Code and Data Size: Current and previous core subsystem library sizes are 4790shown below. These are the code and data sizes for the acpica.lib produced 4791by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4792any ACPI driver or OSPM code. The debug version of the code includes the 4793debug output trace mechanism and has a much larger code and data size. Note 4794that these values will vary depending on the efficiency of the compiler and 4795the compiler options used during generation. 4796 4797 Previous Release: 4798 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4799 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4800 Current Release: 4801 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4802 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4803 4804 48052) iASL Compiler/Disassembler: 4806 4807Fixed a regression in the disassembler where if/else/while constructs were 4808output incorrectly. This problem was introduced in the previous release 4809(20050526). This problem also affected the single-step disassembly in the 4810debugger. 4811 4812Fixed a problem where compiling the reserved _OSI method would randomly (but 4813rarely) produce compile errors. 4814 4815Enhanced the disassembler to emit compilable code in the face of incorrect 4816AML resource descriptors. If the optional ResourceSourceIndex is present, 4817but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4818disassembly. Otherwise, the resulting code cannot be compiled without 4819errors. 4820 4821---------------------------------------- 482226 May 2005. Summary of changes for version 20050526: 4823 48241) ACPI CA Core Subsystem: 4825 4826Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4827the module level (not within a control method.) These opcodes are executed 4828exactly once at the time the table is loaded. This type of code was legal up 4829until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4830order to provide backwards compatibility with earlier BIOS implementations. 4831This eliminates the "Encountered executable code at module level" warning 4832that was previously generated upon detection of such code. 4833 4834Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4835inadvertently be generated during the lookup of namespace objects in the 4836second pass parse of ACPI tables and control methods. It appears that this 4837problem could occur during the resolution of forward references to namespace 4838objects. 4839 4840Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4841corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4842allows the deadlock detection debug code to be compiled out in the normal 4843case, improving mutex performance (and overall subsystem performance) 4844considerably. 4845 4846Implemented a handful of miscellaneous fixes for possible memory leaks on 4847error conditions and error handling control paths. These fixes were 4848suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4849 4850Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4851to prevent a fault in this error case. 4852 4853Code and Data Size: Current and previous core subsystem library sizes are 4854shown below. These are the code and data sizes for the acpica.lib produced 4855by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4856any ACPI driver or OSPM code. The debug version of the code includes the 4857debug output trace mechanism and has a much larger code and data size. Note 4858that these values will vary depending on the efficiency of the compiler and 4859the compiler options used during generation. 4860 4861 Previous Release: 4862 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4863 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4864 Current Release: 4865 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4866 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4867 4868 48692) iASL Compiler/Disassembler: 4870 4871Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4872the module level (not within a control method.) These operators will be 4873executed once at the time the table is loaded. This type of code was legal 4874up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4875compiler in order to provide backwards compatibility with earlier BIOS ASL 4876code. 4877 4878The ACPI integer width (specified via the table revision ID or the -r 4879override, 32 or 64 bits) is now used internally during compile-time constant 4880folding to ensure that constants are truncated to 32 bits if necessary. 4881Previously, the revision ID value was only emitted in the AML table header. 4882 4883An error message is now generated for the Mutex and Method operators if the 4884SyncLevel parameter is outside the legal range of 0 through 15. 4885 4886Fixed a problem with the Method operator ParameterTypes list handling (ACPI 48873.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4888The actual underlying implementation of method argument typechecking is 4889still under development, however. 4890 4891---------------------------------------- 489213 May 2005. Summary of changes for version 20050513: 4893 48941) ACPI CA Core Subsystem: 4895 4896Implemented support for PCI Express root bridges -- added support for device 4897PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4898 4899The interpreter now automatically truncates incoming 64-bit constants to 32 4900bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4901also affects the iASL compiler constant folding. (Note: as per below, the 4902iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4903 4904Fixed a problem where string and buffer objects with "static" pointers 4905(pointers to initialization data within an ACPI table) were not handled 4906consistently. The internal object copy operation now always copies the data 4907to a newly allocated buffer, regardless of whether the source object is 4908static or not. 4909 4910Fixed a problem with the FromBCD operator where an implicit result 4911conversion was improperly performed while storing the result to the target 4912operand. Since this is an "explicit conversion" operator, the implicit 4913conversion should never be performed on the output. 4914 4915Fixed a problem with the CopyObject operator where a copy to an existing 4916named object did not always completely overwrite the existing object stored 4917at name. Specifically, a buffer-to-buffer copy did not delete the existing 4918buffer. 4919 4920Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4921structs for consistency. 4922 4923Code and Data Size: Current and previous core subsystem library sizes are 4924shown below. These are the code and data sizes for the acpica.lib produced 4925by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4926any ACPI driver or OSPM code. The debug version of the code includes the 4927debug output trace mechanism and has a much larger code and data size. Note 4928that these values will vary depending on the efficiency of the compiler and 4929the compiler options used during generation. 4930 4931 Previous Release: 4932 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4933 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4934 Current Release: (Same sizes) 4935 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4936 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4937 4938 49392) iASL Compiler/Disassembler: 4940 4941The compiler now emits a warning if an attempt is made to generate a 64-bit 4942integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4943is truncated to 32 bits. 4944 4945Fixed a problem with large package objects: if the static length of the 4946package is greater than 255, the "variable length package" opcode is 4947emitted. Previously, this caused an error. This requires an update to the 4948ACPI spec, since it currently (incorrectly) states that packages larger than 4949255 elements are not allowed. 4950 4951The disassembler now correctly handles variable length packages and packages 4952larger than 255 elements. 4953 4954---------------------------------------- 495508 April 2005. Summary of changes for version 20050408: 4956 49571) ACPI CA Core Subsystem: 4958 4959Fixed three cases in the interpreter where an "index" argument to an ASL 4960function was still (internally) 32 bits instead of the required 64 bits. 4961This was the Index argument to the Index, Mid, and Match operators. 4962 4963The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4964not a POSIX-defined function and not present in most kernel-level C 4965libraries. All references to the C library strupr function have been removed 4966from the headers. 4967 4968Completed the deployment of static functions/prototypes. All prototypes with 4969the static attribute have been moved from the headers to the owning C file. 4970 4971Implemented an extract option (-e) for the AcpiBin utility (AML binary 4972utility). This option allows the utility to extract individual ACPI tables 4973from the output of AcpiDmp. It provides the same functionality of the 4974acpixtract.pl perl script without the worry of setting the correct perl 4975options. AcpiBin runs on Windows and has not yet been generated/validated in 4976the Linux/Unix environment (but should be soon). 4977 4978Updated and fixed the table dump option for AcpiBin (-d). This option 4979converts a single ACPI table to a hex/ascii file, similar to the output of 4980AcpiDmp. 4981 4982Code and Data Size: Current and previous core subsystem library sizes are 4983shown below. These are the code and data sizes for the acpica.lib produced 4984by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4985any ACPI driver or OSPM code. The debug version of the code includes the 4986debug output trace mechanism and has a much larger code and data size. Note 4987that these values will vary depending on the efficiency of the compiler and 4988the compiler options used during generation. 4989 4990 Previous Release: 4991 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4992 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4993 Current Release: 4994 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4995 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4996 4997 49982) iASL Compiler/Disassembler: 4999 5000Disassembler fix: Added a check to ensure that the table length found in the 5001ACPI table header within the input file is not longer than the actual input 5002file size. This indicates some kind of file or table corruption. 5003 5004---------------------------------------- 500529 March 2005. Summary of changes for version 20050329: 5006 50071) ACPI CA Core Subsystem: 5008 5009An error is now generated if an attempt is made to create a Buffer Field of 5010length zero (A CreateField with a length operand of zero.) 5011 5012The interpreter now issues a warning whenever executable code at the module 5013level is detected during ACPI table load. This will give some idea of the 5014prevalence of this type of code. 5015 5016Implemented support for references to named objects (other than control 5017methods) within package objects. 5018 5019Enhanced package object output for the debug object. Package objects are now 5020completely dumped, showing all elements. 5021 5022Enhanced miscellaneous object output for the debug object. Any object can 5023now be written to the debug object (for example, a device object can be 5024written, and the type of the object will be displayed.) 5025 5026The "static" qualifier has been added to all local functions across both the 5027core subsystem and the iASL compiler. 5028 5029The number of "long" lines (> 80 chars) within the source has been 5030significantly reduced, by about 1/3. 5031 5032Cleaned up all header files to ensure that all CA/iASL functions are 5033prototyped (even static functions) and the formatting is consistent. 5034 5035Two new header files have been added, acopcode.h and acnames.h. 5036 5037Removed several obsolete functions that were no longer used. 5038 5039Code and Data Size: Current and previous core subsystem library sizes are 5040shown below. These are the code and data sizes for the acpica.lib produced 5041by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5042any ACPI driver or OSPM code. The debug version of the code includes the 5043debug output trace mechanism and has a much larger code and data size. Note 5044that these values will vary depending on the efficiency of the compiler and 5045the compiler options used during generation. 5046 5047 Previous Release: 5048 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5049 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5050 Current Release: 5051 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5052 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5053 5054 5055 50562) iASL Compiler/Disassembler: 5057 5058Fixed a problem with the resource descriptor generation/support. For the 5059ResourceSourceIndex and the ResourceSource fields, both must be present, or 5060both must be not present - can't have one without the other. 5061 5062The compiler now returns non-zero from the main procedure if any errors have 5063occurred during the compilation. 5064 5065 5066---------------------------------------- 506709 March 2005. Summary of changes for version 20050309: 5068 50691) ACPI CA Core Subsystem: 5070 5071The string-to-buffer implicit conversion code has been modified again after 5072a change to the ACPI specification. In order to match the behavior of the 5073other major ACPI implementation, the target buffer is no longer truncated if 5074the source string is smaller than an existing target buffer. This change 5075requires an update to the ACPI spec, and should eliminate the recent 5076AE_AML_BUFFER_LIMIT issues. 5077 5078The "implicit return" support was rewritten to a new algorithm that solves 5079the general case. Rather than attempt to determine when a method is about to 5080exit, the result of every ASL operator is saved momentarily until the very 5081next ASL operator is executed. Therefore, no matter how the method exits, 5082there will always be a saved implicit return value. This feature is only 5083enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5084AE_AML_NO_RETURN_VALUE errors when enabled. 5085 5086Implemented implicit conversion support for the predicate (operand) of the 5087If, Else, and While operators. String and Buffer arguments are automatically 5088converted to Integers. 5089 5090Changed the string-to-integer conversion behavior to match the new ACPI 5091errata: "If no integer object exists, a new integer is created. The ASCII 5092string is interpreted as a hexadecimal constant. Each string character is 5093interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5094with the first character as the most significant digit, and ending with the 5095first non-hexadecimal character or end-of-string." This means that the first 5096non-hex character terminates the conversion and this is the code that was 5097changed. 5098 5099Fixed a problem where the ObjectType operator would fail (fault) when used 5100on an Index of a Package which pointed to a null package element. The 5101operator now properly returns zero (Uninitialized) in this case. 5102 5103Fixed a problem where the While operator used excessive memory by not 5104properly popping the result stack during execution. There was no memory leak 5105after execution, however. (Code provided by Valery Podrezov.) 5106 5107Fixed a problem where references to control methods within Package objects 5108caused the method to be invoked, instead of producing a reference object 5109pointing to the method. 5110 5111Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5112improve performance and reduce code size. (Code provided by Alexey 5113Starikovskiy.) 5114 5115Code and Data Size: Current and previous core subsystem library sizes are 5116shown below. These are the code and data sizes for the acpica.lib produced 5117by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5118any ACPI driver or OSPM code. The debug version of the code includes the 5119debug output trace mechanism and has a much larger code and data size. Note 5120that these values will vary depending on the efficiency of the compiler and 5121the compiler options used during generation. 5122 5123 Previous Release: 5124 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5125 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5126 Current Release: 5127 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5128 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5129 5130 51312) iASL Compiler/Disassembler: 5132 5133Fixed a problem with the Return operator with no arguments. Since the AML 5134grammar for the byte encoding requires an operand for the Return opcode, the 5135compiler now emits a Return(Zero) for this case. An ACPI specification 5136update has been written for this case. 5137 5138For tables other than the DSDT, namepath optimization is automatically 5139disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5140compiler has no knowledge of where, and thus cannot optimize namepaths. 5141 5142Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5143inadvertently omitted from the ACPI specification, and will require an 5144update to the spec. 5145 5146The source file scan for ASCII characters is now optional (-a). This change 5147was made because some vendors place non-ascii characters within comments. 5148However, the scan is simply a brute-force byte compare to ensure all 5149characters in the file are in the range 0x00 to 0x7F. 5150 5151Fixed a problem with the CondRefOf operator where the compiler was 5152inappropriately checking for the existence of the target. Since the point of 5153the operator is to check for the existence of the target at run-time, the 5154compiler no longer checks for the target existence. 5155 5156Fixed a problem where errors generated from the internal AML interpreter 5157during constant folding were not handled properly, causing a fault. 5158 5159Fixed a problem with overly aggressive range checking for the Stall 5160operator. The valid range (max 255) is now only checked if the operand is of 5161type Integer. All other operand types cannot be statically checked. 5162 5163Fixed a problem where control method references within the RefOf, DeRefOf, 5164and ObjectType operators were not treated properly. They are now treated as 5165actual references, not method invocations. 5166 5167Fixed and enhanced the "list namespace" option (-ln). This option was broken 5168a number of releases ago. 5169 5170Improved error handling for the Field, IndexField, and BankField operators. 5171The compiler now cleanly reports and recovers from errors in the field 5172component (FieldUnit) list. 5173 5174Fixed a disassembler problem where the optional ResourceDescriptor fields 5175TRS and TTP were not always handled correctly. 5176 5177Disassembler - Comments in output now use "//" instead of "/*" 5178 5179---------------------------------------- 518028 February 2005. Summary of changes for version 20050228: 5181 51821) ACPI CA Core Subsystem: 5183 5184Fixed a problem where the result of an Index() operator (an object 5185reference) must increment the reference count on the target object for the 5186life of the object reference. 5187 5188Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5189Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5190resource descriptors. 5191 5192Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5193Space Descriptor" string, indicating interpreter support for the descriptors 5194above. 5195 5196Implemented header support for the new ACPI 3.0 FADT flag bits. 5197 5198Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5199status/enable registers. 5200 5201Updated header support for the MADT processor local Apic struct and MADT 5202platform interrupt source struct for new ACPI 3.0 fields. 5203 5204Implemented header support for the SRAT and SLIT ACPI tables. 5205 5206Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5207at runtime. 5208 5209Code and Data Size: Current and previous core subsystem library sizes are 5210shown below. These are the code and data sizes for the acpica.lib produced 5211by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5212any ACPI driver or OSPM code. The debug version of the code includes the 5213debug output trace mechanism and has a much larger code and data size. Note 5214that these values will vary depending on the efficiency of the compiler and 5215the compiler options used during generation. 5216 5217 Previous Release: 5218 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5219 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5220 Current Release: 5221 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5222 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5223 5224 52252) iASL Compiler/Disassembler: 5226 5227Fixed a problem with the internal 64-bit String-to-integer conversion with 5228strings less than two characters long. 5229 5230Fixed a problem with constant folding where the result of the Index() 5231operator can not be considered a constant. This means that Index() cannot be 5232a type3 opcode and this will require an update to the ACPI specification. 5233 5234Disassembler: Implemented support for the TTP, MTP, and TRS resource 5235descriptor fields. These fields were inadvertently ignored and not output in 5236the disassembly of the resource descriptor. 5237 5238 5239 ---------------------------------------- 524011 February 2005. Summary of changes for version 20050211: 5241 52421) ACPI CA Core Subsystem: 5243 5244Implemented ACPI 3.0 support for implicit conversion within the Match() 5245operator. MatchObjects can now be of type integer, buffer, or string instead 5246of just type integer. Package elements are implicitly converted to the type 5247of the MatchObject. This change aligns the behavior of Match() with the 5248behavior of the other logical operators (LLess(), etc.) It also requires an 5249errata change to the ACPI specification as this support was intended for 5250ACPI 3.0, but was inadvertently omitted. 5251 5252Fixed a problem with the internal implicit "to buffer" conversion. Strings 5253that are converted to buffers will cause buffer truncation if the string is 5254smaller than the target buffer. Integers that are converted to buffers will 5255not cause buffer truncation, only zero extension (both as per the ACPI 5256spec.) The problem was introduced when code was added to truncate the 5257buffer, but this should not be performed in all cases, only the string case. 5258 5259Fixed a problem with the Buffer and Package operators where the interpreter 5260would get confused if two such operators were used as operands to an ASL 5261operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5262stack was not being popped after the execution of these operators, resulting 5263in an AE_NO_RETURN_VALUE exception. 5264 5265Fixed a problem with constructs of the form Store(Index(...),...). The 5266reference object returned from Index was inadvertently resolved to an actual 5267value. This problem was introduced in version 20050114 when the behavior of 5268Store() was modified to restrict the object types that can be used as the 5269source operand (to match the ACPI specification.) 5270 5271Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5272 5273Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5274 5275Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5276 5277Code and Data Size: Current and previous core subsystem library sizes are 5278shown below. These are the code and data sizes for the acpica.lib produced 5279by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5280any ACPI driver or OSPM code. The debug version of the code includes the 5281debug output trace mechanism and has a much larger code and data size. Note 5282that these values will vary depending on the efficiency of the compiler and 5283the compiler options used during generation. 5284 5285 Previous Release: 5286 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5287 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5288 Current Release: 5289 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5290 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5291 5292 52932) iASL Compiler/Disassembler: 5294 5295Fixed a code generation problem in the constant folding optimization code 5296where incorrect code was generated if a constant was reduced to a buffer 5297object (i.e., a reduced type 5 opcode.) 5298 5299Fixed a typechecking problem for the ToBuffer operator. Caused by an 5300incorrect return type in the internal opcode information table. 5301 5302---------------------------------------- 530325 January 2005. Summary of changes for version 20050125: 5304 53051) ACPI CA Core Subsystem: 5306 5307Fixed a recently introduced problem with the Global Lock where the 5308underlying semaphore was not created. This problem was introduced in 5309version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5310Acquire() operation on _GL. 5311 5312The local object cache is now optional, and is disabled by default. Both 5313AcpiExec and the iASL compiler enable the cache because they run in user 5314mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5315to enable the local cache. 5316 5317Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5318optional "implicit return" support where an error was returned if no return 5319object was expected, but one was implicitly returned. AE_OK is now returned 5320in this case and the implicitly returned object is deleted. 5321AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5322methods such as _STA and _INI where the return type is known up front. 5323 5324Fixed a few issues with the internal convert-to-integer code. It now returns 5325an error if an attempt is made to convert a null string, a string of only 5326blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5327and explicit conversion via the ToInteger() operator. 5328 5329The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5330not needed for normal operation and should increase the performance of the 5331entire subsystem. The code remains in case it is needed for debug purposes 5332again. 5333 5334The AcpiExec source and makefile are included in the Unix/Linux package for 5335the first time. 5336 5337Code and Data Size: Current and previous core subsystem library sizes are 5338shown below. These are the code and data sizes for the acpica.lib produced 5339by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5340any ACPI driver or OSPM code. The debug version of the code includes the 5341debug output trace mechanism and has a much larger code and data size. Note 5342that these values will vary depending on the efficiency of the compiler and 5343the compiler options used during generation. 5344 5345 Previous Release: 5346 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5347 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5348 Current Release: 5349 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5350 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5351 53522) iASL Compiler/Disassembler: 5353 5354Switch/Case support: A warning is now issued if the type of the Switch value 5355cannot be determined at compile time. For example, Switch(Arg0) will 5356generate the warning, and the type is assumed to be an integer. As per the 5357ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5358warning. 5359 5360Switch/Case support: Implemented support for buffer and string objects as 5361the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5362buffers and strings. 5363 5364Switch/Case support: The emitted code for the LEqual() comparisons now uses 5365the switch value as the first operand, not the second. The case value is now 5366the second operand, and this allows the case value to be implicitly 5367converted to the type of the switch value, not the other way around. 5368 5369Switch/Case support: Temporary variables are now emitted immediately within 5370the control method, not at the global level. This means that there are now 537136 temps available per-method, not 36 temps per-module as was the case with 5372the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5373 5374---------------------------------------- 537514 January 2005. Summary of changes for version 20050114: 5376 5377Added 2005 copyright to all module headers. This affects every module in 5378the core subsystem, iASL compiler, and the utilities. 5379 53801) ACPI CA Core Subsystem: 5381 5382Fixed an issue with the String-to-Buffer conversion code where the string 5383null terminator was not included in the buffer after conversion, but there 5384is existing ASL that assumes the string null terminator is included. This is 5385the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5386introduced in the previous version when the code was updated to correctly 5387set the converted buffer size as per the ACPI specification. The ACPI spec 5388is ambiguous and will be updated to specify that the null terminator must be 5389included in the converted buffer. This also affects the ToBuffer() ASL 5390operator. 5391 5392Fixed a problem with the Mid() ASL/AML operator where it did not work 5393correctly on Buffer objects. Newly created sub-buffers were not being marked 5394as initialized. 5395 5396 5397Fixed a problem in AcpiTbFindTable where incorrect string compares were 5398performed on the OemId and OemTableId table header fields. These fields are 5399not null terminated, so strncmp is now used instead of strcmp. 5400 5401Implemented a restriction on the Store() ASL/AML operator to align the 5402behavior with the ACPI specification. Previously, any object could be used 5403as the source operand. Now, the only objects that may be used are Integers, 5404Buffers, Strings, Packages, Object References, and DDB Handles. If 5405necessary, the original behavior can be restored by enabling the 5406EnableInterpreterSlack flag. 5407 5408Enhanced the optional "implicit return" support to allow an implicit return 5409value from methods that are invoked externally via the AcpiEvaluateObject 5410interface. This enables implicit returns from the _STA and _INI methods, 5411for example. 5412 5413Changed the Revision() ASL/AML operator to return the current version of the 5414AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5415the supported ACPI version (This is the function of the _REV method). 5416 5417Updated the _REV predefined method to return the currently supported version 5418of ACPI, now 3. 5419 5420Implemented batch mode option for the AcpiExec utility (-b). 5421 5422Code and Data Size: Current and previous core subsystem library sizes are 5423shown below. These are the code and data sizes for the acpica.lib produced 5424by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5425any ACPI driver or OSPM code. The debug version of the code includes the 5426debug output trace mechanism and has a much larger code and data size. Note 5427that these values will vary depending on the efficiency of the compiler and 5428the compiler options used during generation. 5429 5430 Previous Release: 5431 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5432 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5433 Current Release: 5434 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5435 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5436 5437---------------------------------------- 543810 December 2004. Summary of changes for version 20041210: 5439 5440ACPI 3.0 support is nearing completion in both the iASL compiler and the 5441ACPI CA core subsystem. 5442 54431) ACPI CA Core Subsystem: 5444 5445Fixed a problem in the ToDecimalString operator where the resulting string 5446length was incorrectly calculated. The length is now calculated exactly, 5447eliminating incorrect AE_STRING_LIMIT exceptions. 5448 5449Fixed a problem in the ToHexString operator to allow a maximum 200 character 5450string to be produced. 5451 5452Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5453routine where the length of the resulting buffer was not truncated to the 5454new size (if the target buffer already existed). 5455 5456Code and Data Size: Current and previous core subsystem library sizes are 5457shown below. These are the code and data sizes for the acpica.lib produced 5458by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5459any ACPI driver or OSPM code. The debug version of the code includes the 5460debug output trace mechanism and has a much larger code and data size. Note 5461that these values will vary depending on the efficiency of the compiler and 5462the compiler options used during generation. 5463 5464 Previous Release: 5465 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5466 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5467 Current Release: 5468 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5469 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5470 5471 54722) iASL Compiler/Disassembler: 5473 5474Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5475ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5476Includes support in the disassembler. 5477 5478Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5479AccessSize. 5480 5481Fixed a problem where the _HE resource name for the Interrupt macro was 5482referencing bit 0 instead of bit 1. 5483 5484Implemented check for maximum 255 interrupts in the Interrupt macro. 5485 5486Fixed a problem with the predefined resource descriptor names where 5487incorrect AML code was generated if the offset within the resource buffer 5488was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5489but did not update the surrounding package lengths. 5490 5491Changes to the Dma macro: All channels within the channel list must be in 5492the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5493optional (default is BusMaster). 5494 5495Implemented check for maximum 7 data bytes for the VendorShort macro. 5496 5497The ReadWrite parameter is now optional for the Memory32 and similar macros. 5498 5499---------------------------------------- 550003 December 2004. Summary of changes for version 20041203: 5501 55021) ACPI CA Core Subsystem: 5503 5504The low-level field insertion/extraction code (exfldio) has been completely 5505rewritten to eliminate unnecessary complexity, bugs, and boundary 5506conditions. 5507 5508Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5509operators where the input operand could be inadvertently deleted if no 5510conversion was necessary (e.g., if the input to ToInteger was an Integer 5511object.) 5512 5513Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5514exception code was returned if the resulting string would be > 200 chars. 5515AE_STRING_LIMIT is now returned. 5516 5517Fixed a problem with the Concatenate operator where AE_OK was always 5518returned, even if the operation failed. 5519 5520Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5521semaphores to be allocated. 5522 5523Code and Data Size: Current and previous core subsystem library sizes are 5524shown below. These are the code and data sizes for the acpica.lib produced 5525by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5526any ACPI driver or OSPM code. The debug version of the code includes the 5527debug output trace mechanism and has a much larger code and data size. Note 5528that these values will vary depending on the efficiency of the compiler and 5529the compiler options used during generation. 5530 5531 Previous Release: 5532 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5533 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5534 Current Release: 5535 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5536 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5537 5538 55392) iASL Compiler/Disassembler: 5540 5541Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5542recently introduced in 20041119. 5543 5544Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5545byte was inadvertently set to zero. 5546 5547---------------------------------------- 554819 November 2004. Summary of changes for version 20041119: 5549 55501) ACPI CA Core Subsystem: 5551 5552Fixed a problem in the internal ConvertToInteger routine where new integers 5553were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5554buffers and strings to integers. 5555 5556Implemented support to store a value to an Index() on a String object. This 5557is an ACPI 2.0 feature that had not yet been implemented. 5558 5559Implemented new behavior for storing objects to individual package elements 5560(via the Index() operator). The previous behavior was to invoke the implicit 5561conversion rules if an object was already present at the index. The new 5562behavior is to simply delete any existing object and directly store the new 5563object. Although the ACPI specification seems unclear on this subject, other 5564ACPI implementations behave in this manner. (This is the root of the 5565AE_BAD_HEX_CONSTANT issue.) 5566 5567Modified the RSDP memory scan mechanism to support the extended checksum for 5568ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5569RSDP signature is found with a valid checksum. 5570 5571Code and Data Size: Current and previous core subsystem library sizes are 5572shown below. These are the code and data sizes for the acpica.lib produced 5573by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5574any ACPI driver or OSPM code. The debug version of the code includes the 5575debug output trace mechanism and has a much larger code and data size. Note 5576that these values will vary depending on the efficiency of the compiler and 5577the compiler options used during generation. 5578 5579 Previous Release: 5580 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5581 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5582 Current Release: 5583 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5584 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5585 5586 55872) iASL Compiler/Disassembler: 5588 5589Fixed a missing semicolon in the aslcompiler.y file. 5590 5591---------------------------------------- 559205 November 2004. Summary of changes for version 20041105: 5593 55941) ACPI CA Core Subsystem: 5595 5596Implemented support for FADT revision 2. This was an interim table (between 5597ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5598 5599Implemented optional support to allow uninitialized LocalX and ArgX 5600variables in a control method. The variables are initialized to an Integer 5601object with a value of zero. This support is enabled by setting the 5602AcpiGbl_EnableInterpreterSlack flag to TRUE. 5603 5604Implemented support for Integer objects for the SizeOf operator. Either 4 5605or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5606depending on the parent table revision). 5607 5608Fixed a problem in the implementation of the SizeOf and ObjectType operators 5609where the operand was resolved to a value too early, causing incorrect 5610return values for some objects. 5611 5612Fixed some possible memory leaks during exceptional conditions. 5613 5614Code and Data Size: Current and previous core subsystem library sizes are 5615shown below. These are the code and data sizes for the acpica.lib produced 5616by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5617any ACPI driver or OSPM code. The debug version of the code includes the 5618debug output trace mechanism and has a much larger code and data size. Note 5619that these values will vary depending on the efficiency of the compiler and 5620the compiler options used during generation. 5621 5622 Previous Release: 5623 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5624 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5625 Current Release: 5626 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5627 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5628 5629 56302) iASL Compiler/Disassembler: 5631 5632Implemented support for all ACPI 3.0 reserved names and methods. 5633 5634Implemented all ACPI 3.0 grammar elements in the front-end, including 5635support for semicolons. 5636 5637Implemented the ACPI 3.0 Function() and ToUUID() macros 5638 5639Fixed a problem in the disassembler where a Scope() operator would not be 5640emitted properly if the target of the scope was in another table. 5641 5642---------------------------------------- 564315 October 2004. Summary of changes for version 20041015: 5644 5645Note: ACPI CA is currently undergoing an in-depth and complete formal 5646evaluation to test/verify the following areas. Other suggestions are 5647welcome. This will result in an increase in the frequency of releases and 5648the number of bug fixes in the next few months. 5649 - Functional tests for all ASL/AML operators 5650 - All implicit/explicit type conversions 5651 - Bit fields and operation regions 5652 - 64-bit math support and 32-bit-only "truncated" math support 5653 - Exceptional conditions, both compiler and interpreter 5654 - Dynamic object deletion and memory leaks 5655 - ACPI 3.0 support when implemented 5656 - External interfaces to the ACPI subsystem 5657 5658 56591) ACPI CA Core Subsystem: 5660 5661Fixed two alignment issues on 64-bit platforms - within debug statements in 5662AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5663field within the non-aligned ACPI generic address structure. 5664 5665Fixed a problem in the Increment and Decrement operators where incorrect 5666operand resolution could result in the inadvertent modification of the 5667original integer when the integer is passed into another method as an 5668argument and the arg is then incremented/decremented. 5669 5670Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5671BCD number were truncated during conversion. 5672 5673Fixed a problem in the ToDecimal operator where the length of the resulting 5674string could be set incorrectly too long if the input operand was a Buffer 5675object. 5676 5677Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5678within a buffer would prematurely terminate a compare between buffer 5679objects. 5680 5681Added a check for string overflow (>200 characters as per the ACPI 5682specification) during the Concatenate operator with two string operands. 5683 5684Code and Data Size: Current and previous core subsystem library sizes are 5685shown below. These are the code and data sizes for the acpica.lib produced 5686by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5687any ACPI driver or OSPM code. The debug version of the code includes the 5688debug output trace mechanism and has a much larger code and data size. Note 5689that these values will vary depending on the efficiency of the compiler and 5690the compiler options used during generation. 5691 5692 Previous Release: 5693 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5694 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5695 Current Release: 5696 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5697 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5698 5699 5700 57012) iASL Compiler/Disassembler: 5702 5703Allow the use of the ObjectType operator on uninitialized Locals and Args 5704(returns 0 as per the ACPI specification). 5705 5706Fixed a problem where the compiler would fault if there was a syntax error 5707in the FieldName of all of the various CreateXXXField operators. 5708 5709Disallow the use of lower case letters within the EISAID macro, as per the 5710ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5711U is an uppercase letter and N is a hex digit. 5712 5713 5714---------------------------------------- 571506 October 2004. Summary of changes for version 20041006: 5716 57171) ACPI CA Core Subsystem: 5718 5719Implemented support for the ACPI 3.0 Timer operator. This ASL function 5720implements a 64-bit timer with 100 nanosecond granularity. 5721 5722Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5723implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5724the timer with the best clock available. Also, it keeps the core subsystem 5725out of the clock handling business, since the host OS (usually) performs 5726this function. 5727 5728Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5729functions use a 64-bit address which is part of the packed ACPI Generic 5730Address Structure. Since the structure is non-aligned, the alignment macros 5731are now used to extract the address to a local variable before use. 5732 5733Fixed a problem where the ToInteger operator assumed all input strings were 5734hexadecimal. The operator now handles both decimal strings and hex strings 5735(prefixed with "0x"). 5736 5737Fixed a problem where the string length in the string object created as a 5738result of the internal ConvertToString procedure could be incorrect. This 5739potentially affected all implicit conversions and also the ToDecimalString 5740and ToHexString operators. 5741 5742Fixed two problems in the ToString operator. If the length parameter was 5743zero, an incorrect string object was created and the value of the input 5744length parameter was inadvertently changed from zero to Ones. 5745 5746Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5747resource macro was ignored. 5748 5749Simplified the interfaces to the internal division functions, reducing code 5750size and complexity. 5751 5752Code and Data Size: Current and previous core subsystem library sizes are 5753shown below. These are the code and data sizes for the acpica.lib produced 5754by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5755any ACPI driver or OSPM code. The debug version of the code includes the 5756debug output trace mechanism and has a much larger code and data size. Note 5757that these values will vary depending on the efficiency of the compiler and 5758the compiler options used during generation. 5759 5760 Previous Release: 5761 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5762 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5763 Current Release: 5764 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5765 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5766 5767 57682) iASL Compiler/Disassembler: 5769 5770Implemented support for the ACPI 3.0 Timer operator. 5771 5772Fixed a problem where the Default() operator was inadvertently ignored in a 5773Switch/Case block. This was a problem in the translation of the Switch 5774statement to If...Else pairs. 5775 5776Added support to allow a standalone Return operator, with no parentheses (or 5777operands). 5778 5779Fixed a problem with code generation for the ElseIf operator where the 5780translated Else...If parse tree was improperly constructed leading to the 5781loss of some code. 5782 5783---------------------------------------- 578422 September 2004. Summary of changes for version 20040922: 5785 57861) ACPI CA Core Subsystem: 5787 5788Fixed a problem with the implementation of the LNot() operator where "Ones" 5789was not returned for the TRUE case. Changed the code to return Ones instead 5790of (!Arg) which was usually 1. This change affects iASL constant folding for 5791this operator also. 5792 5793Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5794initialized properly -- Now zero the entire buffer in this case where the 5795buffer already exists. 5796 5797Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5798Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5799related code considerably. This will require changes/updates to all OS 5800interface layers (OSLs.) 5801 5802Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5803a system exception handler to be installed. This handler is invoked upon any 5804run-time exception that occurs during control method execution. 5805 5806Added support for the DSDT in AcpiTbFindTable. This allows the 5807DataTableRegion() operator to access the local copy of the DSDT. 5808 5809Code and Data Size: Current and previous core subsystem library sizes are 5810shown below. These are the code and data sizes for the acpica.lib produced 5811by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5812any ACPI driver or OSPM code. The debug version of the code includes the 5813debug output trace mechanism and has a much larger code and data size. Note 5814that these values will vary depending on the efficiency of the compiler and 5815the compiler options used during generation. 5816 5817 Previous Release: 5818 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5819 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5820 Current Release: 5821 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5822 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5823 5824 58252) iASL Compiler/Disassembler: 5826 5827Fixed a problem with constant folding and the LNot operator. LNot was 5828returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5829could result in the generation of an incorrect folded/reduced constant. 5830 5831End-Of-File is now allowed within a "//"-style comment. A parse error no 5832longer occurs if such a comment is at the very end of the input ASL source 5833file. 5834 5835Implemented the "-r" option to override the Revision in the table header. 5836The initial use of this option will be to simplify the evaluation of the AML 5837interpreter by allowing a single ASL source module to be compiled for either 583832-bit or 64-bit integers. 5839 5840 5841---------------------------------------- 584227 August 2004. Summary of changes for version 20040827: 5843 58441) ACPI CA Core Subsystem: 5845 5846- Implemented support for implicit object conversion in the non-numeric 5847logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5848LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5849the second operand is implicitly converted on the fly to match the type of 5850the first operand. For example: 5851 5852 LEqual (Source1, Source2) 5853 5854Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5855The data type of Source1 dictates the required type of Source2. Source2 is 5856implicitly converted if necessary to match the type of Source1. 5857 5858- Updated and corrected the behavior of the string conversion support. The 5859rules concerning conversion of buffers to strings (according to the ACPI 5860specification) are as follows: 5861 5862ToDecimalString - explicit byte-wise conversion of buffer to string of 5863decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5864conversion of buffer to string of hex values (0-FF) separated by commas. 5865ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5866copy with no transform except NULL terminated. Any other implicit buffer-to- 5867string conversion - byte-wise conversion of buffer to string of hex values 5868(0-FF) separated by spaces. 5869 5870- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5871 5872- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5873one byte too short in the case of a node in the root scope. This could 5874cause a fault during debug output. 5875 5876- Code and Data Size: Current and previous core subsystem library sizes are 5877shown below. These are the code and data sizes for the acpica.lib produced 5878by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5879any ACPI driver or OSPM code. The debug version of the code includes the 5880debug output trace mechanism and has a much larger code and data size. Note 5881that these values will vary depending on the efficiency of the compiler and 5882the compiler options used during generation. 5883 5884 Previous Release: 5885 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5886 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5887 Current Release: 5888 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5889 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5890 5891 58922) iASL Compiler/Disassembler: 5893 5894- Fixed a Linux generation error. 5895 5896 5897---------------------------------------- 589816 August 2004. Summary of changes for version 20040816: 5899 59001) ACPI CA Core Subsystem: 5901 5902Designed and implemented support within the AML interpreter for the so- 5903called "implicit return". This support returns the result of the last ASL 5904operation within a control method, in the absence of an explicit Return() 5905operator. A few machines depend on this behavior, even though it is not 5906explicitly supported by the ASL language. It is optional support that can 5907be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5908 5909Removed support for the PCI_Config address space from the internal low level 5910hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5911support was not used internally, and would not work correctly anyway because 5912the PCI bus number and segment number were not supported. There are 5913separate interfaces for PCI configuration space access because of the unique 5914interface. 5915 5916Code and Data Size: Current and previous core subsystem library sizes are 5917shown below. These are the code and data sizes for the acpica.lib produced 5918by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5919any ACPI driver or OSPM code. The debug version of the code includes the 5920debug output trace mechanism and has a much larger code and data size. Note 5921that these values will vary depending on the efficiency of the compiler and 5922the compiler options used during generation. 5923 5924 Previous Release: 5925 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5926 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5927 Current Release: 5928 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5929 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5930 5931 59322) iASL Compiler/Disassembler: 5933 5934Fixed a problem where constants in ASL expressions at the root level (not 5935within a control method) could be inadvertently truncated during code 5936generation. This problem was introduced in the 20040715 release. 5937 5938 5939---------------------------------------- 594015 July 2004. Summary of changes for version 20040715: 5941 59421) ACPI CA Core Subsystem: 5943 5944Restructured the internal HW GPE interfaces to pass/track the current state 5945of interrupts (enabled/disabled) in order to avoid possible deadlock and 5946increase flexibility of the interfaces. 5947 5948Implemented a "lexicographical compare" for String and Buffer objects within 5949the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5950as per further clarification to the ACPI specification. Behavior is similar 5951to C library "strcmp". 5952 5953Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5954external function. In the 32-bit non-debug case, the stack use has been 5955reduced from 168 bytes to 32 bytes. 5956 5957Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5958whose purpose is to allow the AML interpreter to forgive certain bad AML 5959constructs. Default setting is FALSE. 5960 5961Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5962support code. If enabled, it allows field access to go beyond the end of a 5963region definition if the field is within the region length rounded up to the 5964next access width boundary (a common coding error.) 5965 5966Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5967ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5968symbols are lowercased by the latest version of the AcpiSrc tool. 5969 5970The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5971rename "Register" to simply "Reg" to prevent certain compilers from 5972complaining. 5973 5974Code and Data Size: Current and previous core subsystem library sizes are 5975shown below. These are the code and data sizes for the acpica.lib produced 5976by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5977any ACPI driver or OSPM code. The debug version of the code includes the 5978debug output trace mechanism and has a much larger code and data size. Note 5979that these values will vary depending on the efficiency of the compiler and 5980the compiler options used during generation. 5981 5982 Previous Release: 5983 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5984 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5985 Current Release: 5986 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5987 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5988 5989 59902) iASL Compiler/Disassembler: 5991 5992Implemented full support for Package objects within the Case() operator. 5993Note: The Break() operator is currently not supported within Case blocks 5994(TermLists) as there is some question about backward compatibility with ACPI 59951.0 interpreters. 5996 5997 5998Fixed a problem where complex terms were not supported properly within the 5999Switch() operator. 6000 6001Eliminated extraneous warning for compiler-emitted reserved names of the 6002form "_T_x". (Used in Switch/Case operators.) 6003 6004Eliminated optimization messages for "_T_x" objects and small constants 6005within the DefinitionBlock operator. 6006 6007 6008---------------------------------------- 600915 June 2004. Summary of changes for version 20040615: 6010 60111) ACPI CA Core Subsystem: 6012 6013Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6014following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6015LLessEqual. 6016 6017All directory names in the entire source package are lower case, as they 6018were in earlier releases. 6019 6020Implemented "Disassemble" command in the AML debugger that will disassemble 6021a single control method. 6022 6023Code and Data Size: Current and previous core subsystem library sizes are 6024shown below. These are the code and data sizes for the acpica.lib produced 6025by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6026any ACPI driver or OSPM code. The debug version of the code includes the 6027debug output trace mechanism and has a much larger code and data size. Note 6028that these values will vary depending on the efficiency of the compiler and 6029the compiler options used during generation. 6030 6031 Previous Release: 6032 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6033 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6034 6035 Current Release: 6036 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6037 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6038 6039 60402) iASL Compiler/Disassembler: 6041 6042Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6043following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6044LLessEqual. 6045 6046All directory names in the entire source package are lower case, as they 6047were in earlier releases. 6048 6049Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6050not found. 6051 6052Fixed an issue with the Windows version of the compiler where later versions 6053of Windows place the FADT in the registry under the name "FADT" and not 6054"FACP" as earlier versions did. This applies when using the -g or - 6055d<nofilename> options. The compiler now looks for both strings as 6056necessary. 6057 6058Fixed a problem with compiler namepath optimization where a namepath within 6059the Scope() operator could not be optimized if the namepath was a subpath of 6060the current scope path. 6061 6062---------------------------------------- 606327 May 2004. Summary of changes for version 20040527: 6064 60651) ACPI CA Core Subsystem: 6066 6067Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6068support in the RSDP scan code. The original code improperly scanned for the 6069EBDA by simply scanning from memory location 0 to 0x400. The correct method 6070is to first obtain the EBDA pointer from within the BIOS data area, then 6071scan 1K of memory starting at the EBDA pointer. There appear to be few if 6072any machines that place the RSDP in the EBDA, however. 6073 6074Integrated a fix for a possible fault during evaluation of BufferField 6075arguments. Obsolete code that was causing the problem was removed. 6076 6077Found and fixed a problem in the Field Support Code where data could be 6078corrupted on a bit field read that starts on an aligned boundary but does 6079not end on an aligned boundary. Merged the read/write "datum length" 6080calculation code into a common procedure. 6081 6082Rolled in a couple of changes to the FreeBSD-specific header. 6083 6084 6085Code and Data Size: Current and previous core subsystem library sizes are 6086shown below. These are the code and data sizes for the acpica.lib produced 6087by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6088any ACPI driver or OSPM code. The debug version of the code includes the 6089debug output trace mechanism and has a much larger code and data size. Note 6090that these values will vary depending on the efficiency of the compiler and 6091the compiler options used during generation. 6092 6093 Previous Release: 6094 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6095 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6096 Current Release: 6097 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6098 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6099 6100 61012) iASL Compiler/Disassembler: 6102 6103Fixed a generation warning produced by some overly-verbose compilers for a 610464-bit constant. 6105 6106---------------------------------------- 610714 May 2004. Summary of changes for version 20040514: 6108 61091) ACPI CA Core Subsystem: 6110 6111Fixed a problem where hardware GPE enable bits sometimes not set properly 6112during and after GPE method execution. Result of 04/27 changes. 6113 6114Removed extra "clear all GPEs" when sleeping/waking. 6115 6116Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6117AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6118the new AcpiEv* calls as appropriate. 6119 6120ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6121now "Microsoft Windows NT" for maximum compatibility. However this can be 6122changed by modifying the acconfig.h file. 6123 6124Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6125traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6126 6127Run _INI methods on ThermalZone objects. This is against the ACPI 6128specification, but there is apparently ASL code in the field that has these 6129_INI methods, and apparently "other" AML interpreters execute them. 6130 6131Performed a full 16/32/64 bit lint that resulted in some small changes. 6132 6133Added a sleep simulation command to the AML debugger to test sleep code. 6134 6135Code and Data Size: Current and previous core subsystem library sizes are 6136shown below. These are the code and data sizes for the acpica.lib produced 6137by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6138any ACPI driver or OSPM code. The debug version of the code includes the 6139debug output trace mechanism and has a much larger code and data size. Note 6140that these values will vary depending on the efficiency of the compiler and 6141the compiler options used during generation. 6142 6143 Previous Release: 6144 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6145 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6146 Current Release: 6147 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6148 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6149 6150---------------------------------------- 615127 April 2004. Summary of changes for version 20040427: 6152 61531) ACPI CA Core Subsystem: 6154 6155Completed a major overhaul of the GPE handling within ACPI CA. There are 6156now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6157The only GPEs allowed to be combination wake/run are for button-style 6158devices such as a control-method power button, control-method sleep button, 6159or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6160referenced by any _PRW methods are marked for "runtime" and hardware 6161enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6162(and disabled at runtime). However, at sleep time, only those GPEs that 6163have been specifically enabled for wake via the AcpiEnableGpe interface will 6164actually be hardware enabled. 6165 6166A new external interface has been added, AcpiSetGpeType(), that is meant to 6167be used by device drivers to force a GPE to a particular type. It will be 6168especially useful for the drivers for the button devices mentioned above. 6169 6170Completed restructuring of the ACPI CA initialization sequence so that 6171default operation region handlers are installed before GPEs are initialized 6172and the _PRW methods are executed. This will prevent errors when the _PRW 6173methods attempt to access system memory or I/O space. 6174 6175GPE enable/disable no longer reads the GPE enable register. We now keep the 6176enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6177thus no longer depend on the hardware to maintain these bits. 6178 6179Always clear the wake status and fixed/GPE status bits before sleep, even 6180for state S5. 6181 6182Improved the AML debugger output for displaying the GPE blocks and their 6183current status. 6184 6185Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6186x = 0,1,2,3,4. 6187 6188Fixed a problem where the physical address was incorrectly calculated when 6189the Load() operator was used to directly load from an Operation Region (vs. 6190loading from a Field object.) Also added check for minimum table length for 6191this case. 6192 6193Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6194mutex release. 6195 6196Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6197consistency with the other fields returned. 6198 6199Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6200structure for each GPE in the system, so the size of this structure is 6201important. 6202 6203CPU stack requirement reduction: Cleaned up the method execution and object 6204evaluation paths so that now a parameter structure is passed, instead of 6205copying the various method parameters over and over again. 6206 6207In evregion.c: Correctly exit and reenter the interpreter region if and 6208only if dispatching an operation region request to a user-installed handler. 6209Do not exit/reenter when dispatching to a default handler (e.g., default 6210system memory or I/O handlers) 6211 6212 6213Notes for updating drivers for the new GPE support. The following changes 6214must be made to ACPI-related device drivers that are attached to one or more 6215GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6216 62171) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6218explicitly call AcpiEnableGpe. 62192) There is a new interface called AcpiSetGpeType. This should be called 6220before enabling the GPE. Also, this interface will automatically disable 6221the GPE if it is currently enabled. 62223) AcpiEnableGpe no longer supports a GPE type flag. 6223 6224Specific drivers that must be changed: 62251) EC driver: 6226 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6227AeGpeHandler, NULL); 6228 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6229 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6230 62312) Button Drivers (Power, Lid, Sleep): 6232Run _PRW method under parent device 6233If _PRW exists: /* This is a control-method button */ 6234 Extract GPE number and possibly GpeDevice 6235 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6236 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6237 6238For all other devices that have _PRWs, we automatically set the GPE type to 6239ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6240must be done on a selective basis, usually requiring some kind of user app 6241to allow the user to pick the wake devices. 6242 6243 6244Code and Data Size: Current and previous core subsystem library sizes are 6245shown below. These are the code and data sizes for the acpica.lib produced 6246by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6247any ACPI driver or OSPM code. The debug version of the code includes the 6248debug output trace mechanism and has a much larger code and data size. Note 6249that these values will vary depending on the efficiency of the compiler and 6250the compiler options used during generation. 6251 6252 Previous Release: 6253 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6254 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6255 Current Release: 6256 6257 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6258 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6259 6260 6261 6262---------------------------------------- 626302 April 2004. Summary of changes for version 20040402: 6264 62651) ACPI CA Core Subsystem: 6266 6267Fixed an interpreter problem where an indirect store through an ArgX 6268parameter was incorrectly applying the "implicit conversion rules" during 6269the store. From the ACPI specification: "If the target is a method local or 6270argument (LocalX or ArgX), no conversion is performed and the result is 6271stored directly to the target". The new behavior is to disable implicit 6272conversion during ALL stores to an ArgX. 6273 6274Changed the behavior of the _PRW method scan to ignore any and all errors 6275returned by a given _PRW. This prevents the scan from aborting from the 6276failure of any single _PRW. 6277 6278Moved the runtime configuration parameters from the global init procedure to 6279static variables in acglobal.h. This will allow the host to override the 6280default values easily. 6281 6282Code and Data Size: Current and previous core subsystem library sizes are 6283shown below. These are the code and data sizes for the acpica.lib produced 6284by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6285any ACPI driver or OSPM code. The debug version of the code includes the 6286debug output trace mechanism and has a much larger code and data size. Note 6287that these values will vary depending on the efficiency of the compiler and 6288the compiler options used during generation. 6289 6290 Previous Release: 6291 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6292 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6293 Current Release: 6294 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6295 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6296 6297 62982) iASL Compiler/Disassembler: 6299 6300iASL now fully disassembles SSDTs. However, External() statements are not 6301generated automatically for unresolved symbols at this time. This is a 6302planned feature for future implementation. 6303 6304Fixed a scoping problem in the disassembler that occurs when the type of the 6305target of a Scope() operator is overridden. This problem caused an 6306incorrectly nested internal namespace to be constructed. 6307 6308Any warnings or errors that are emitted during disassembly are now commented 6309out automatically so that the resulting file can be recompiled without any 6310hand editing. 6311 6312---------------------------------------- 631326 March 2004. Summary of changes for version 20040326: 6314 63151) ACPI CA Core Subsystem: 6316 6317Implemented support for "wake" GPEs via interaction between GPEs and the 6318_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6319identified as a WAKE GPE and by default will no longer be enabled at 6320runtime. Previously, we were blindly enabling all GPEs with a corresponding 6321_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6322believe this has been the cause of thousands of "spurious" GPEs on some 6323systems. 6324 6325This new GPE behavior is can be reverted to the original behavior (enable 6326ALL GPEs at runtime) via a runtime flag. 6327 6328Fixed a problem where aliased control methods could not access objects 6329properly. The proper scope within the namespace was not initialized 6330(transferred to the target of the aliased method) before executing the 6331target method. 6332 6333Fixed a potential race condition on internal object deletion on the return 6334object in AcpiEvaluateObject. 6335 6336Integrated a fix for resource descriptors where both _MEM and _MTP were 6337being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6338wide, 0x0F instead of 0x03.) 6339 6340Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6341fault in some cases. 6342 6343Updated Notify() values for debug statements in evmisc.c 6344 6345Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6346 6347Code and Data Size: Current and previous core subsystem library sizes are 6348shown below. These are the code and data sizes for the acpica.lib produced 6349by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6350any ACPI driver or OSPM code. The debug version of the code includes the 6351debug output trace mechanism and has a much larger code and data size. Note 6352that these values will vary depending on the efficiency of the compiler and 6353the compiler options used during generation. 6354 6355 Previous Release: 6356 6357 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6358 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6359 Current Release: 6360 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6361 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6362 6363---------------------------------------- 636411 March 2004. Summary of changes for version 20040311: 6365 63661) ACPI CA Core Subsystem: 6367 6368Fixed a problem where errors occurring during the parse phase of control 6369method execution did not abort cleanly. For example, objects created and 6370installed in the namespace were not deleted. This caused all subsequent 6371invocations of the method to return the AE_ALREADY_EXISTS exception. 6372 6373Implemented a mechanism to force a control method to "Serialized" execution 6374if the method attempts to create namespace objects. (The root of the 6375AE_ALREADY_EXISTS problem.) 6376 6377Implemented support for the predefined _OSI "internal" control method. 6378Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6379"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6380This feature will allow "other" operating systems to execute the fully 6381tested, "Windows" code path through the ASL code 6382 6383Global Lock Support: Now allows multiple acquires and releases with any 6384internal thread. Removed concept of "owning thread" for this special mutex. 6385 6386Fixed two functions that were inappropriately declaring large objects on the 6387CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6388method execution considerably. 6389 6390Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6391S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6392 6393Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6394defined on the machine. 6395 6396Implemented two runtime options: One to force all control method execution 6397to "Serialized" to mimic Windows behavior, another to disable _OSI support 6398if it causes problems on a given machine. 6399 6400Code and Data Size: Current and previous core subsystem library sizes are 6401shown below. These are the code and data sizes for the acpica.lib produced 6402by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6403any ACPI driver or OSPM code. The debug version of the code includes the 6404debug output trace mechanism and has a much larger code and data size. Note 6405that these values will vary depending on the efficiency of the compiler and 6406the compiler options used during generation. 6407 6408 Previous Release: 6409 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6410 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6411 Current Release: 6412 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6413 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6414 64152) iASL Compiler/Disassembler: 6416 6417Fixed an array size problem for FreeBSD that would cause the compiler to 6418fault. 6419 6420---------------------------------------- 642120 February 2004. Summary of changes for version 20040220: 6422 6423 64241) ACPI CA Core Subsystem: 6425 6426Implemented execution of _SxD methods for Device objects in the 6427GetObjectInfo interface. 6428 6429Fixed calls to _SST method to pass the correct arguments. 6430 6431Added a call to _SST on wake to restore to "working" state. 6432 6433Check for End-Of-Buffer failure case in the WalkResources interface. 6434 6435Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6436structures to the beginning of the file. 6437 6438After wake, clear GPE status register(s) before enabling GPEs. 6439 6440After wake, clear/enable power button. (Perhaps we should clear/enable all 6441fixed events upon wake.) 6442 6443Fixed a couple of possible memory leaks in the Namespace manager. 6444 6445Integrated latest acnetbsd.h file. 6446 6447---------------------------------------- 644811 February 2004. Summary of changes for version 20040211: 6449 6450 64511) ACPI CA Core Subsystem: 6452 6453Completed investigation and implementation of the call-by-reference 6454mechanism for control method arguments. 6455 6456Fixed a problem where a store of an object into an indexed package could 6457fail if the store occurs within a different method than the method that 6458created the package. 6459 6460Fixed a problem where the ToDecimal operator could return incorrect results. 6461 6462Fixed a problem where the CopyObject operator could fail on some of the more 6463obscure objects (e.g., Reference objects.) 6464 6465Improved the output of the Debug object to display buffer, package, and 6466index objects. 6467 6468Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6469the expected result. 6470 6471Added permanent ACPI_REPORT_ERROR macros for all instances of the 6472ACPI_AML_INTERNAL exception. 6473 6474Integrated latest version of acfreebsd.h 6475 6476---------------------------------------- 647716 January 2004. Summary of changes for version 20040116: 6478 6479The purpose of this release is primarily to update the copyright years in 6480each module, thus causing a huge number of diffs. There are a few small 6481functional changes, however. 6482 64831) ACPI CA Core Subsystem: 6484 6485Improved error messages when there is a problem finding one or more of the 6486required base ACPI tables 6487 6488Reintroduced the definition of APIC_HEADER in actbl.h 6489 6490Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6491 6492Removed extraneous reference to NewObj in dsmthdat.c 6493 64942) iASL compiler 6495 6496Fixed a problem introduced in December that disabled the correct disassembly 6497of Resource Templates 6498 6499 6500---------------------------------------- 650103 December 2003. Summary of changes for version 20031203: 6502 65031) ACPI CA Core Subsystem: 6504 6505Changed the initialization of Operation Regions during subsystem 6506init to perform two entire walks of the ACPI namespace; The first 6507to initialize the regions themselves, the second to execute the 6508_REG methods. This fixed some interdependencies across _REG 6509methods found on some machines. 6510 6511Fixed a problem where a Store(Local0, Local1) could simply update 6512the object reference count, and not create a new copy of the 6513object if the Local1 is uninitialized. 6514 6515Implemented support for the _SST reserved method during sleep 6516transitions. 6517 6518Implemented support to clear the SLP_TYP and SLP_EN bits when 6519waking up, this is apparently required by some machines. 6520 6521When sleeping, clear the wake status only if SleepState is not S5. 6522 6523Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6524pointer arithmetic advanced a string pointer too far. 6525 6526Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6527could be returned if the requested table has not been loaded. 6528 6529Within the support for IRQ resources, restructured the handling of 6530the active and edge/level bits. 6531 6532Fixed a few problems in AcpiPsxExecute() where memory could be 6533leaked under certain error conditions. 6534 6535Improved error messages for the cases where the ACPI mode could 6536not be entered. 6537 6538Code and Data Size: Current and previous core subsystem library 6539sizes are shown below. These are the code and data sizes for the 6540acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6541these values do not include any ACPI driver or OSPM code. The 6542debug version of the code includes the debug output trace 6543mechanism and has a much larger code and data size. Note that 6544these values will vary depending on the efficiency of the compiler 6545and the compiler options used during generation. 6546 6547 Previous Release (20031029): 6548 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6549 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6550 Current Release: 6551 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6552 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6553 65542) iASL Compiler/Disassembler: 6555 6556Implemented a fix for the iASL disassembler where a bad index was 6557generated. This was most noticeable on 64-bit platforms 6558 6559 6560---------------------------------------- 656129 October 2003. Summary of changes for version 20031029: 6562 65631) ACPI CA Core Subsystem: 6564 6565 6566Fixed a problem where a level-triggered GPE with an associated 6567_Lxx control method was incorrectly cleared twice. 6568 6569Fixed a problem with the Field support code where an access can 6570occur beyond the end-of-region if the field is non-aligned but 6571extends to the very end of the parent region (resulted in an 6572AE_AML_REGION_LIMIT exception.) 6573 6574Fixed a problem with ACPI Fixed Events where an RT Clock handler 6575would not get invoked on an RTC event. The RTC event bitmasks for 6576the PM1 registers were not being initialized properly. 6577 6578Implemented support for executing _STA and _INI methods for 6579Processor objects. Although this is currently not part of the 6580ACPI specification, there is existing ASL code that depends on the 6581init-time execution of these methods. 6582 6583Implemented and deployed a GetDescriptorName function to decode 6584the various types of internal descriptors. Guards against null 6585descriptors during debug output also. 6586 6587Implemented and deployed a GetNodeName function to extract the 4- 6588character namespace node name. This function simplifies the debug 6589and error output, as well as guarding against null pointers during 6590output. 6591 6592Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6593simplify the debug and error output of 64-bit integers. This 6594macro replaces the HIDWORD and LODWORD macros for dumping these 6595integers. 6596 6597Updated the implementation of the Stall() operator to only call 6598AcpiOsStall(), and also return an error if the operand is larger 6599than 255. This preserves the required behavior of not 6600relinquishing the processor, as would happen if AcpiOsSleep() was 6601called for "long stalls". 6602 6603Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6604initialized are now treated as NOOPs. 6605 6606Cleaned up a handful of warnings during 64-bit generation. 6607 6608Fixed a reported error where and incorrect GPE number was passed 6609to the GPE dispatch handler. This value is only used for error 6610output, however. Used this opportunity to clean up and streamline 6611the GPE dispatch code. 6612 6613Code and Data Size: Current and previous core subsystem library 6614sizes are shown below. These are the code and data sizes for the 6615acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6616these values do not include any ACPI driver or OSPM code. The 6617 6618debug version of the code includes the debug output trace 6619mechanism and has a much larger code and data size. Note that 6620these values will vary depending on the efficiency of the compiler 6621and the compiler options used during generation. 6622 6623 Previous Release (20031002): 6624 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6625 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6626 Current Release: 6627 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6628 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6629 6630 66312) iASL Compiler/Disassembler: 6632 6633Updated the iASL compiler to return an error if the operand to the 6634Stall() operator is larger than 255. 6635 6636 6637---------------------------------------- 663802 October 2003. Summary of changes for version 20031002: 6639 6640 66411) ACPI CA Core Subsystem: 6642 6643Fixed a problem with Index Fields where the index was not 6644incremented for fields that require multiple writes to the 6645index/data registers (Fields that are wider than the data 6646register.) 6647 6648Fixed a problem with all Field objects where a write could go 6649beyond the end-of-field if the field was larger than the access 6650granularity and therefore required multiple writes to complete the 6651request. An extra write beyond the end of the field could happen 6652inadvertently. 6653 6654Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6655would incorrectly be returned if the width of the Data Register 6656was larger than the specified field access width. 6657 6658Completed fixes for LoadTable() and Unload() and verified their 6659operation. Implemented full support for the "DdbHandle" object 6660throughout the ACPI CA subsystem. 6661 6662Implemented full support for the MADT and ECDT tables in the ACPI 6663CA header files. Even though these tables are not directly 6664consumed by ACPI CA, the header definitions are useful for ACPI 6665device drivers. 6666 6667Integrated resource descriptor fixes posted to the Linux ACPI 6668list. This included checks for minimum descriptor length, and 6669support for trailing NULL strings within descriptors that have 6670optional string elements. 6671 6672Code and Data Size: Current and previous core subsystem library 6673sizes are shown below. These are the code and data sizes for the 6674acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6675these values do not include any ACPI driver or OSPM code. The 6676debug version of the code includes the debug output trace 6677mechanism and has a much larger code and data size. Note that 6678these values will vary depending on the efficiency of the compiler 6679and the compiler options used during generation. 6680 6681 Previous Release (20030918): 6682 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6683 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6684 Current Release: 6685 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6686 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6687 6688 66892) iASL Compiler: 6690 6691Implemented detection of non-ASCII characters within the input 6692source ASL file. This catches attempts to compile binary (AML) 6693files early in the compile, with an informative error message. 6694 6695Fixed a problem where the disassembler would fault if the output 6696filename could not be generated or if the output file could not be 6697opened. 6698 6699---------------------------------------- 670018 September 2003. Summary of changes for version 20030918: 6701 6702 67031) ACPI CA Core Subsystem: 6704 6705Found and fixed a longstanding problem with the late execution of 6706the various deferred AML opcodes (such as Operation Regions, 6707Buffer Fields, Buffers, and Packages). If the name string 6708specified for the name of the new object placed the object in a 6709scope other than the current scope, the initialization/execution 6710of the opcode failed. The solution to this problem was to 6711implement a mechanism where the late execution of such opcodes 6712does not attempt to lookup/create the name a second time in an 6713incorrect scope. This fixes the "region size computed 6714incorrectly" problem. 6715 6716Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6717Global Lock AE_BAD_PARAMETER error. 6718 6719Fixed several 64-bit issues with prototypes, casting and data 6720types. 6721 6722Removed duplicate prototype from acdisasm.h 6723 6724Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6725 6726Code and Data Size: Current and previous core subsystem library 6727sizes are shown below. These are the code and data sizes for the 6728acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6729these values do not include any ACPI driver or OSPM code. The 6730debug version of the code includes the debug output trace 6731mechanism and has a much larger code and data size. Note that 6732these values will vary depending on the efficiency of the compiler 6733and the compiler options used during generation. 6734 6735 Previous Release: 6736 6737 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6738 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6739 Current Release: 6740 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6741 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6742 6743 67442) Linux: 6745 6746Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6747correct sleep time in seconds. 6748 6749---------------------------------------- 675014 July 2003. Summary of changes for version 20030619: 6751 67521) ACPI CA Core Subsystem: 6753 6754Parse SSDTs in order discovered, as opposed to reverse order 6755(Hrvoje Habjanic) 6756 6757Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6758Klausner, 6759 Nate Lawson) 6760 6761 67622) Linux: 6763 6764Dynamically allocate SDT list (suggested by Andi Kleen) 6765 6766proc function return value cleanups (Andi Kleen) 6767 6768Correctly handle NMI watchdog during long stalls (Andrew Morton) 6769 6770Make it so acpismp=force works (reported by Andrew Morton) 6771 6772 6773---------------------------------------- 677419 June 2003. Summary of changes for version 20030619: 6775 67761) ACPI CA Core Subsystem: 6777 6778Fix To/FromBCD, eliminating the need for an arch-specific #define. 6779 6780Do not acquire a semaphore in the S5 shutdown path. 6781 6782Fix ex_digits_needed for 0. (Takayoshi Kochi) 6783 6784Fix sleep/stall code reversal. (Andi Kleen) 6785 6786Revert a change having to do with control method calling 6787semantics. 6788 67892) Linux: 6790 6791acpiphp update (Takayoshi Kochi) 6792 6793Export acpi_disabled for sonypi (Stelian Pop) 6794 6795Mention acpismp=force in config help 6796 6797Re-add acpitable.c and acpismp=force. This improves backwards 6798 6799compatibility and also cleans up the code to a significant degree. 6800 6801Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6802 6803---------------------------------------- 680422 May 2003. Summary of changes for version 20030522: 6805 68061) ACPI CA Core Subsystem: 6807 6808Found and fixed a reported problem where an AE_NOT_FOUND error 6809occurred occasionally during _BST evaluation. This turned out to 6810be an Owner ID allocation issue where a called method did not get 6811a new ID assigned to it. Eventually, (after 64k calls), the Owner 6812ID UINT16 would wraparound so that the ID would be the same as the 6813caller's and the called method would delete the caller's 6814namespace. 6815 6816Implemented extended error reporting for control methods that are 6817aborted due to a run-time exception. Output includes the exact 6818AML instruction that caused the method abort, a dump of the method 6819locals and arguments at the time of the abort, and a trace of all 6820nested control method calls. 6821 6822Modified the interpreter to allow the creation of buffers of zero 6823length from the AML code. Implemented new code to ensure that no 6824attempt is made to actually allocate a memory buffer (of length 6825zero) - instead, a simple buffer object with a NULL buffer pointer 6826and length zero is created. A warning is no longer issued when 6827the AML attempts to create a zero-length buffer. 6828 6829Implemented a workaround for the "leading asterisk issue" in 6830_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6831asterisk is automatically removed if present in any HID, UID, or 6832CID strings. The iASL compiler will still flag this asterisk as 6833an error, however. 6834 6835Implemented full support for _CID methods that return a package of 6836multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6837now additionally returns a device _CID list if present. This 6838required a change to the external interface in order to pass an 6839ACPI_BUFFER object as a parameter since the _CID list is of 6840variable length. 6841 6842Fixed a problem with the new AE_SAME_HANDLER exception where 6843handler initialization code did not know about this exception. 6844 6845Code and Data Size: Current and previous core subsystem library 6846sizes are shown below. These are the code and data sizes for the 6847acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6848these values do not include any ACPI driver or OSPM code. The 6849debug version of the code includes the debug output trace 6850mechanism and has a much larger code and data size. Note that 6851these values will vary depending on the efficiency of the compiler 6852and the compiler options used during generation. 6853 6854 Previous Release (20030509): 6855 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6856 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6857 Current Release: 6858 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6859 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6860 6861 68622) Linux: 6863 6864Fixed a bug in which we would reinitialize the ACPI interrupt 6865after it was already working, thus disabling all ACPI and the IRQs 6866for any other device sharing the interrupt. (Thanks to Stian 6867Jordet) 6868 6869Toshiba driver update (John Belmonte) 6870 6871Return only 0 or 1 for our interrupt handler status (Andrew 6872Morton) 6873 6874 68753) iASL Compiler: 6876 6877Fixed a reported problem where multiple (nested) ElseIf() 6878statements were not handled correctly by the compiler, resulting 6879in incorrect warnings and incorrect AML code. This was a problem 6880in both the ASL parser and the code generator. 6881 6882 68834) Documentation: 6884 6885Added changes to existing interfaces, new exception codes, and new 6886text concerning reference count object management versus garbage 6887collection. 6888 6889---------------------------------------- 689009 May 2003. Summary of changes for version 20030509. 6891 6892 68931) ACPI CA Core Subsystem: 6894 6895Changed the subsystem initialization sequence to hold off 6896installation of address space handlers until the hardware has been 6897initialized and the system has entered ACPI mode. This is because 6898the installation of space handlers can cause _REG methods to be 6899run. Previously, the _REG methods could potentially be run before 6900ACPI mode was enabled. 6901 6902Fixed some memory leak issues related to address space handler and 6903notify handler installation. There were some problems with the 6904reference count mechanism caused by the fact that the handler 6905objects are shared across several namespace objects. 6906 6907Fixed a reported problem where reference counts within the 6908namespace were not properly updated when named objects created by 6909method execution were deleted. 6910 6911Fixed a reported problem where multiple SSDTs caused a deletion 6912issue during subsystem termination. Restructured the table data 6913structures to simplify the linked lists and the related code. 6914 6915Fixed a problem where the table ID associated with secondary 6916tables (SSDTs) was not being propagated into the namespace objects 6917created by those tables. This would only present a problem for 6918tables that are unloaded at run-time, however. 6919 6920Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6921type as the length parameter (instead of UINT32). 6922 6923Solved a long-standing problem where an ALREADY_EXISTS error 6924appears on various systems. This problem could happen when there 6925are multiple PCI_Config operation regions under a single PCI root 6926bus. This doesn't happen very frequently, but there are some 6927systems that do this in the ASL. 6928 6929Fixed a reported problem where the internal DeleteNode function 6930was incorrectly handling the case where a namespace node was the 6931first in the parent's child list, and had additional peers (not 6932the only child, but first in the list of children.) 6933 6934Code and Data Size: Current core subsystem library sizes are shown 6935below. These are the code and data sizes for the acpica.lib 6936produced by the Microsoft Visual C++ 6.0 compiler, and these 6937values do not include any ACPI driver or OSPM code. The debug 6938version of the code includes the debug output trace mechanism and 6939has a much larger code and data size. Note that these values will 6940vary depending on the efficiency of the compiler and the compiler 6941options used during generation. 6942 6943 Previous Release 6944 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6945 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6946 Current Release: 6947 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6948 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6949 6950 69512) Linux: 6952 6953Allow ":" in OS override string (Ducrot Bruno) 6954 6955Kobject fix (Greg KH) 6956 6957 69583 iASL Compiler/Disassembler: 6959 6960Fixed a problem in the generation of the C source code files (AML 6961is emitted in C source statements for BIOS inclusion) where the 6962Ascii dump that appears within a C comment at the end of each line 6963could cause a compile time error if the AML sequence happens to 6964have an open comment or close comment sequence embedded. 6965 6966 6967---------------------------------------- 696824 April 2003. Summary of changes for version 20030424. 6969 6970 69711) ACPI CA Core Subsystem: 6972 6973Support for big-endian systems has been implemented. Most of the 6974support has been invisibly added behind big-endian versions of the 6975ACPI_MOVE_* macros. 6976 6977Fixed a problem in AcpiHwDisableGpeBlock() and 6978AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6979low level hardware write routine. The offset parameter was 6980actually eliminated from the low level read/write routines because 6981they had become obsolete. 6982 6983Fixed a problem where a handler object was deleted twice during 6984the removal of a fixed event handler. 6985 6986 69872) Linux: 6988 6989A fix for SMP systems with link devices was contributed by 6990 6991Compaq's Dan Zink. 6992 6993(2.5) Return whether we handled the interrupt in our IRQ handler. 6994(Linux ISRs no longer return void, so we can propagate the handler 6995return value from the ACPI CA core back to the OS.) 6996 6997 6998 69993) Documentation: 7000 7001The ACPI CA Programmer Reference has been updated to reflect new 7002interfaces and changes to existing interfaces. 7003 7004---------------------------------------- 700528 March 2003. Summary of changes for version 20030328. 7006 70071) ACPI CA Core Subsystem: 7008 7009The GPE Block Device support has been completed. New interfaces 7010are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7011interfaces (enable, disable, clear, getstatus) have been split 7012into separate interfaces for Fixed Events and General Purpose 7013Events (GPEs) in order to support GPE Block Devices properly. 7014 7015Fixed a problem where the error message "Failed to acquire 7016semaphore" would appear during operations on the embedded 7017controller (EC). 7018 7019Code and Data Size: Current core subsystem library sizes are shown 7020below. These are the code and data sizes for the acpica.lib 7021produced by the Microsoft Visual C++ 6.0 compiler, and these 7022values do not include any ACPI driver or OSPM code. The debug 7023version of the code includes the debug output trace mechanism and 7024has a much larger code and data size. Note that these values will 7025vary depending on the efficiency of the compiler and the compiler 7026options used during generation. 7027 7028 Previous Release 7029 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7030 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7031 Current Release: 7032 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7033 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7034 7035 7036---------------------------------------- 703728 February 2003. Summary of changes for version 20030228. 7038 7039 70401) ACPI CA Core Subsystem: 7041 7042The GPE handling and dispatch code has been completely overhauled 7043in preparation for support of GPE Block Devices (ID ACPI0006). 7044This affects internal data structures and code only; there should 7045be no differences visible externally. One new file has been 7046added, evgpeblk.c 7047 7048The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7049fields that are used to determine the GPE block lengths. The 7050REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7051structures are ignored. This is per the ACPI specification but it 7052isn't very clear. The full 256 Block 0/1 GPEs are now supported 7053(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7054 7055In the SCI interrupt handler, removed the read of the PM1_CONTROL 7056register to look at the SCI_EN bit. On some machines, this read 7057causes an SMI event and greatly slows down SCI events. (This may 7058in fact be the cause of slow battery status response on some 7059systems.) 7060 7061Fixed a problem where a store of a NULL string to a package object 7062could cause the premature deletion of the object. This was seen 7063during execution of the battery _BIF method on some systems, 7064resulting in no battery data being returned. 7065 7066Added AcpiWalkResources interface to simplify parsing of resource 7067lists. 7068 7069Code and Data Size: Current core subsystem library sizes are shown 7070below. These are the code and data sizes for the acpica.lib 7071produced by the Microsoft Visual C++ 6.0 compiler, and these 7072values do not include any ACPI driver or OSPM code. The debug 7073version of the code includes the debug output trace mechanism and 7074has a much larger code and data size. Note that these values will 7075vary depending on the efficiency of the compiler and the compiler 7076options used during generation. 7077 7078 Previous Release 7079 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7080 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7081 Current Release: 7082 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7083 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7084 7085 70862) Linux 7087 7088S3 fixes (Ole Rohne) 7089 7090Update ACPI PHP driver with to use new acpi_walk_resource API 7091(Bjorn Helgaas) 7092 7093Add S4BIOS support (Pavel Machek) 7094 7095Map in entire table before performing checksum (John Stultz) 7096 7097Expand the mem= cmdline to allow the specification of reserved and 7098ACPI DATA blocks (Pavel Machek) 7099 7100Never use ACPI on VISWS 7101 7102Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7103 7104Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7105causing us to think that some systems support C2 when they really 7106don't. 7107 7108Do not count processor objects for non-present CPUs (Thanks to 7109Dominik Brodowski) 7110 7111 71123) iASL Compiler: 7113 7114Fixed a problem where ASL include files could not be found and 7115opened. 7116 7117Added support for the _PDC reserved name. 7118 7119 7120---------------------------------------- 712122 January 2003. Summary of changes for version 20030122. 7122 7123 71241) ACPI CA Core Subsystem: 7125 7126Added a check for constructs of the form: Store (Local0, Local0) 7127where Local0 is not initialized. Apparently, some BIOS 7128programmers believe that this is a NOOP. Since this store doesn't 7129do anything anyway, the new prototype behavior will ignore this 7130error. This is a case where we can relax the strict checking in 7131the interpreter in the name of compatibility. 7132 7133 71342) Linux 7135 7136The AcpiSrc Source Conversion Utility has been released with the 7137Linux package for the first time. This is the utility that is 7138used to convert the ACPI CA base source code to the Linux version. 7139 7140(Both) Handle P_BLK lengths shorter than 6 more gracefully 7141 7142(Both) Move more headers to include/acpi, and delete an unused 7143header. 7144 7145(Both) Move drivers/acpi/include directory to include/acpi 7146 7147(Both) Boot functions don't use cmdline, so don't pass it around 7148 7149(Both) Remove include of unused header (Adrian Bunk) 7150 7151(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7152the 7153former now also includes the latter, acpiphp.h only needs the one, 7154now. 7155 7156(2.5) Make it possible to select method of bios restoring after S3 7157resume. [=> no more ugly ifdefs] (Pavel Machek) 7158 7159(2.5) Make proc write interfaces work (Pavel Machek) 7160 7161(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7162 7163(2.5) Break out ACPI Perf code into its own module, under cpufreq 7164(Dominik Brodowski) 7165 7166(2.4) S4BIOS support (Ducrot Bruno) 7167 7168(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7169Visinoni) 7170 7171 71723) iASL Compiler: 7173 7174Added support to disassemble SSDT and PSDTs. 7175 7176Implemented support to obtain SSDTs from the Windows registry if 7177available. 7178 7179 7180---------------------------------------- 718109 January 2003. Summary of changes for version 20030109. 7182 71831) ACPI CA Core Subsystem: 7184 7185Changed the behavior of the internal Buffer-to-String conversion 7186function. The current ACPI specification states that the contents 7187of the buffer are "converted to a string of two-character 7188hexadecimal numbers, each separated by a space". Unfortunately, 7189this definition is not backwards compatible with existing ACPI 1.0 7190implementations (although the behavior was not defined in the ACPI 71911.0 specification). The new behavior simply copies data from the 7192buffer to the string until a null character is found or the end of 7193the buffer is reached. The new String object is always null 7194terminated. This problem was seen during the generation of _BIF 7195battery data where incorrect strings were returned for battery 7196type, etc. This will also require an errata to the ACPI 7197specification. 7198 7199Renamed all instances of NATIVE_UINT and NATIVE_INT to 7200ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7201 7202Copyright in all module headers (both Linux and non-Linux) has be 7203updated to 2003. 7204 7205Code and Data Size: Current core subsystem library sizes are shown 7206below. These are the code and data sizes for the acpica.lib 7207produced by the Microsoft Visual C++ 6.0 compiler, and these 7208values do not include any ACPI driver or OSPM code. The debug 7209version of the code includes the debug output trace mechanism and 7210has a much larger code and data size. Note that these values will 7211vary depending on the efficiency of the compiler and the compiler 7212options used during generation. 7213 7214 Previous Release 7215 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7216 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7217 Current Release: 7218 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7219 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7220 7221 72222) Linux 7223 7224Fixed an oops on module insertion/removal (Matthew Tippett) 7225 7226(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7227 7228(2.5) Replace pr_debug (Randy Dunlap) 7229 7230(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7231 7232(Both) Eliminate spawning of thread from timer callback, in favor 7233of schedule_work() 7234 7235(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7236 7237(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7238 7239(Both) Add missing statics to button.c (Pavel Machek) 7240 7241Several changes have been made to the source code translation 7242utility that generates the Linux Code in order to make the code 7243more "Linux-like": 7244 7245All typedefs on structs and unions have been removed in keeping 7246with the Linux coding style. 7247 7248Removed the non-Linux SourceSafe module revision number from each 7249module header. 7250 7251Completed major overhaul of symbols to be lowercased for linux. 7252Doubled the number of symbols that are lowercased. 7253 7254Fixed a problem where identifiers within procedure headers and 7255within quotes were not fully lower cased (they were left with a 7256starting capital.) 7257 7258Some C macros whose only purpose is to allow the generation of 16- 7259bit code are now completely removed in the Linux code, increasing 7260readability and maintainability. 7261 7262---------------------------------------- 7263 726412 December 2002. Summary of changes for version 20021212. 7265 7266 72671) ACPI CA Core Subsystem: 7268 7269Fixed a problem where the creation of a zero-length AML Buffer 7270would cause a fault. 7271 7272Fixed a problem where a Buffer object that pointed to a static AML 7273buffer (in an ACPI table) could inadvertently be deleted, causing 7274memory corruption. 7275 7276Fixed a problem where a user buffer (passed in to the external 7277ACPI CA interfaces) could be overwritten if the buffer was too 7278small to complete the operation, causing memory corruption. 7279 7280Fixed a problem in the Buffer-to-String conversion code where a 7281string of length one was always returned, regardless of the size 7282of the input Buffer object. 7283 7284Removed the NATIVE_CHAR data type across the entire source due to 7285lack of need and lack of consistent use. 7286 7287Code and Data Size: Current core subsystem library sizes are shown 7288below. These are the code and data sizes for the acpica.lib 7289produced by the Microsoft Visual C++ 6.0 compiler, and these 7290values do not include any ACPI driver or OSPM code. The debug 7291version of the code includes the debug output trace mechanism and 7292has a much larger code and data size. Note that these values will 7293vary depending on the efficiency of the compiler and the compiler 7294options used during generation. 7295 7296 Previous Release 7297 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7298 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7299 Current Release: 7300 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7301 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7302 7303 7304---------------------------------------- 730505 December 2002. Summary of changes for version 20021205. 7306 73071) ACPI CA Core Subsystem: 7308 7309Fixed a problem where a store to a String or Buffer object could 7310cause corruption of the DSDT if the object type being stored was 7311the same as the target object type and the length of the object 7312being stored was equal to or smaller than the original (existing) 7313target object. This was seen to cause corruption of battery _BIF 7314buffers if the _BIF method modified the buffer on the fly. 7315 7316Fixed a problem where an internal error was generated if a control 7317method invocation was used in an OperationRegion, Buffer, or 7318Package declaration. This was caused by the deferred parsing of 7319the control method and thus the deferred creation of the internal 7320method object. The solution to this problem was to create the 7321internal method object at the moment the method is encountered in 7322the first pass - so that subsequent references to the method will 7323able to obtain the required parameter count and thus properly 7324parse the method invocation. This problem presented itself as an 7325AE_AML_INTERNAL during the pass 1 parse phase during table load. 7326 7327Fixed a problem where the internal String object copy routine did 7328not always allocate sufficient memory for the target String object 7329and caused memory corruption. This problem was seen to cause 7330"Allocation already present in list!" errors as memory allocation 7331became corrupted. 7332 7333Implemented a new function for the evaluation of namespace objects 7334that allows the specification of the allowable return object 7335types. This simplifies a lot of code that checks for a return 7336object of one or more specific objects returned from the 7337evaluation (such as _STA, etc.) This may become and external 7338function if it would be useful to ACPI-related drivers. 7339 7340Completed another round of prefixing #defines with "ACPI_" for 7341clarity. 7342 7343Completed additional code restructuring to allow more modular 7344linking for iASL compiler and AcpiExec. Several files were split 7345creating new files. New files: nsparse.c dsinit.c evgpe.c 7346 7347Implemented an abort mechanism to terminate an executing control 7348method via the AML debugger. This feature is useful for debugging 7349control methods that depend (wait) for specific hardware 7350responses. 7351 7352Code and Data Size: Current core subsystem library sizes are shown 7353below. These are the code and data sizes for the acpica.lib 7354produced by the Microsoft Visual C++ 6.0 compiler, and these 7355values do not include any ACPI driver or OSPM code. The debug 7356version of the code includes the debug output trace mechanism and 7357has a much larger code and data size. Note that these values will 7358vary depending on the efficiency of the compiler and the compiler 7359options used during generation. 7360 7361 Previous Release 7362 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7363 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7364 Current Release: 7365 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7366 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7367 7368 73692) iASL Compiler/Disassembler 7370 7371Fixed a compiler code generation problem for "Interrupt" Resource 7372Descriptors. If specified in the ASL, the optional "Resource 7373Source Index" and "Resource Source" fields were not inserted into 7374the correct location within the AML resource descriptor, creating 7375an invalid descriptor. 7376 7377Fixed a disassembler problem for "Interrupt" resource descriptors. 7378The optional "Resource Source Index" and "Resource Source" fields 7379were ignored. 7380 7381 7382---------------------------------------- 738322 November 2002. Summary of changes for version 20021122. 7384 7385 73861) ACPI CA Core Subsystem: 7387 7388Fixed a reported problem where an object stored to a Method Local 7389or Arg was not copied to a new object during the store - the 7390object pointer was simply copied to the Local/Arg. This caused 7391all subsequent operations on the Local/Arg to also affect the 7392original source of the store operation. 7393 7394Fixed a problem where a store operation to a Method Local or Arg 7395was not completed properly if the Local/Arg contained a reference 7396(from RefOf) to a named field. The general-purpose store-to- 7397namespace-node code is now used so that this case is handled 7398automatically. 7399 7400Fixed a problem where the internal object copy routine would cause 7401a protection fault if the object being copied was a Package and 7402contained either 1) a NULL package element or 2) a nested sub- 7403package. 7404 7405Fixed a problem with the GPE initialization that resulted from an 7406ambiguity in the ACPI specification. One section of the 7407specification states that both the address and length of the GPE 7408block must be zero if the block is not supported. Another section 7409implies that only the address need be zero if the block is not 7410supported. The code has been changed so that both the address and 7411the length must be non-zero to indicate a valid GPE block (i.e., 7412if either the address or the length is zero, the GPE block is 7413invalid.) 7414 7415Code and Data Size: Current core subsystem library sizes are shown 7416below. These are the code and data sizes for the acpica.lib 7417produced by the Microsoft Visual C++ 6.0 compiler, and these 7418values do not include any ACPI driver or OSPM code. The debug 7419version of the code includes the debug output trace mechanism and 7420has a much larger code and data size. Note that these values will 7421vary depending on the efficiency of the compiler and the compiler 7422options used during generation. 7423 7424 Previous Release 7425 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7426 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7427 Current Release: 7428 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7429 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7430 7431 74322) Linux 7433 7434Cleaned up EC driver. Exported an external EC read/write 7435interface. By going through this, other drivers (most notably 7436sonypi) will be able to serialize access to the EC. 7437 7438 74393) iASL Compiler/Disassembler 7440 7441Implemented support to optionally generate include files for both 7442ASM and C (the -i switch). This simplifies BIOS development by 7443automatically creating include files that contain external 7444declarations for the symbols that are created within the 7445 7446(optionally generated) ASM and C AML source files. 7447 7448 7449---------------------------------------- 745015 November 2002. Summary of changes for version 20021115. 7451 74521) ACPI CA Core Subsystem: 7453 7454Fixed a memory leak problem where an error during resolution of 7455 7456method arguments during a method invocation from another method 7457failed to cleanup properly by deleting all successfully resolved 7458argument objects. 7459 7460Fixed a problem where the target of the Index() operator was not 7461correctly constructed if the source object was a package. This 7462problem has not been detected because the use of a target operand 7463with Index() is very rare. 7464 7465Fixed a problem with the Index() operator where an attempt was 7466made to delete the operand objects twice. 7467 7468Fixed a problem where an attempt was made to delete an operand 7469twice during execution of the CondRefOf() operator if the target 7470did not exist. 7471 7472Implemented the first of perhaps several internal create object 7473functions that create and initialize a specific object type. This 7474consolidates duplicated code wherever the object is created, thus 7475shrinking the size of the subsystem. 7476 7477Implemented improved debug/error messages for errors that occur 7478during nested method invocations. All executing method pathnames 7479are displayed (with the error) as the call stack is unwound - thus 7480simplifying debug. 7481 7482Fixed a problem introduced in the 10/02 release that caused 7483premature deletion of a buffer object if a buffer was used as an 7484ASL operand where an integer operand is required (Thus causing an 7485implicit object conversion from Buffer to Integer.) The change in 7486the 10/02 release was attempting to fix a memory leak (albeit 7487incorrectly.) 7488 7489Code and Data Size: Current core subsystem library sizes are shown 7490below. These are the code and data sizes for the acpica.lib 7491produced by the Microsoft Visual C++ 6.0 compiler, and these 7492values do not include any ACPI driver or OSPM code. The debug 7493version of the code includes the debug output trace mechanism and 7494has a much larger code and data size. Note that these values will 7495vary depending on the efficiency of the compiler and the compiler 7496options used during generation. 7497 7498 Previous Release 7499 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7500 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7501 Current Release: 7502 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7503 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7504 7505 75062) Linux 7507 7508Changed the implementation of the ACPI semaphores to use down() 7509instead of down_interruptable(). It is important that the 7510execution of ACPI control methods not be interrupted by signals. 7511Methods must run to completion, or the system may be left in an 7512unknown/unstable state. 7513 7514Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7515(Shawn Starr) 7516 7517 75183) iASL Compiler/Disassembler 7519 7520 7521Changed the default location of output files. All output files 7522are now placed in the current directory by default instead of in 7523the directory of the source file. This change may affect some 7524existing makefiles, but it brings the behavior of the compiler in 7525line with other similar tools. The location of the output files 7526can be overridden with the -p command line switch. 7527 7528 7529---------------------------------------- 753011 November 2002. Summary of changes for version 20021111. 7531 7532 75330) ACPI Specification 2.0B is released and is now available at: 7534http://www.acpi.info/index.html 7535 7536 75371) ACPI CA Core Subsystem: 7538 7539Implemented support for the ACPI 2.0 SMBus Operation Regions. 7540This includes the early detection and handoff of the request to 7541the SMBus region handler (avoiding all of the complex field 7542support code), and support for the bidirectional return packet 7543from an SMBus write operation. This paves the way for the 7544development of SMBus drivers in each host operating system. 7545 7546Fixed a problem where the semaphore WAIT_FOREVER constant was 7547defined as 32 bits, but must be 16 bits according to the ACPI 7548specification. This had the side effect of causing ASL 7549Mutex/Event timeouts even though the ASL code requested a wait 7550forever. Changed all internal references to the ACPI timeout 7551parameter to 16 bits to prevent future problems. Changed the name 7552of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7553 7554Code and Data Size: Current core subsystem library sizes are shown 7555below. These are the code and data sizes for the acpica.lib 7556produced by the Microsoft Visual C++ 6.0 compiler, and these 7557values do not include any ACPI driver or OSPM code. The debug 7558version of the code includes the debug output trace mechanism and 7559has a much larger code and data size. Note that these values will 7560vary depending on the efficiency of the compiler and the compiler 7561options used during generation. 7562 7563 Previous Release 7564 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7565 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7566 Current Release: 7567 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7568 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7569 7570 75712) Linux 7572 7573Module loading/unloading fixes (John Cagle) 7574 7575 75763) iASL Compiler/Disassembler 7577 7578Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7579 7580Implemented support for the disassembly of all SMBus protocol 7581keywords (SMBQuick, SMBWord, etc.) 7582 7583---------------------------------------- 758401 November 2002. Summary of changes for version 20021101. 7585 7586 75871) ACPI CA Core Subsystem: 7588 7589Fixed a problem where platforms that have a GPE1 block but no GPE0 7590block were not handled correctly. This resulted in a "GPE 7591overlap" error message. GPE0 is no longer required. 7592 7593Removed code added in the previous release that inserted nodes 7594into the namespace in alphabetical order. This caused some side- 7595effects on various machines. The root cause of the problem is 7596still under investigation since in theory, the internal ordering 7597of the namespace nodes should not matter. 7598 7599 7600Enhanced error reporting for the case where a named object is not 7601found during control method execution. The full ACPI namepath 7602(name reference) of the object that was not found is displayed in 7603this case. 7604 7605Note: as a result of the overhaul of the namespace object types in 7606the previous release, the namespace nodes for the predefined 7607scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7608instead of ACPI_TYPE_ANY. This simplifies the namespace 7609management code but may affect code that walks the namespace tree 7610looking for specific object types. 7611 7612Code and Data Size: Current core subsystem library sizes are shown 7613below. These are the code and data sizes for the acpica.lib 7614produced by the Microsoft Visual C++ 6.0 compiler, and these 7615values do not include any ACPI driver or OSPM code. The debug 7616version of the code includes the debug output trace mechanism and 7617has a much larger code and data size. Note that these values will 7618vary depending on the efficiency of the compiler and the compiler 7619options used during generation. 7620 7621 Previous Release 7622 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7623 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7624 Current Release: 7625 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7626 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7627 7628 76292) Linux 7630 7631Fixed a problem introduced in the previous release where the 7632Processor and Thermal objects were not recognized and installed in 7633/proc. This was related to the scope type change described above. 7634 7635 76363) iASL Compiler/Disassembler 7637 7638Implemented the -g option to get all of the required ACPI tables 7639from the registry and save them to files (Windows version of the 7640compiler only.) The required tables are the FADT, FACS, and DSDT. 7641 7642Added ACPI table checksum validation during table disassembly in 7643order to catch corrupted tables. 7644 7645 7646---------------------------------------- 764722 October 2002. Summary of changes for version 20021022. 7648 76491) ACPI CA Core Subsystem: 7650 7651Implemented a restriction on the Scope operator that the target 7652must already exist in the namespace at the time the operator is 7653encountered (during table load or method execution). In other 7654words, forward references are not allowed and Scope() cannot 7655create a new object. This changes the previous behavior where the 7656interpreter would create the name if not found. This new behavior 7657correctly enables the search-to-root algorithm during namespace 7658lookup of the target name. Because of this upsearch, this fixes 7659the known Compaq _SB_.OKEC problem and makes both the AML 7660interpreter and iASL compiler compatible with other ACPI 7661implementations. 7662 7663Completed a major overhaul of the internal ACPI object types for 7664the ACPI Namespace and the associated operand objects. Many of 7665these types had become obsolete with the introduction of the two- 7666pass namespace load. This cleanup simplifies the code and makes 7667the entire namespace load mechanism much clearer and easier to 7668understand. 7669 7670Improved debug output for tracking scope opening/closing to help 7671diagnose scoping issues. The old scope name as well as the new 7672scope name are displayed. Also improved error messages for 7673problems with ASL Mutex objects and error messages for GPE 7674problems. 7675 7676Cleaned up the namespace dump code, removed obsolete code. 7677 7678All string output (for all namespace/object dumps) now uses the 7679common ACPI string output procedure which handles escapes properly 7680and does not emit non-printable characters. 7681 7682Fixed some issues with constants in the 64-bit version of the 7683local C library (utclib.c) 7684 7685 76862) Linux 7687 7688EC Driver: No longer attempts to acquire the Global Lock at 7689interrupt level. 7690 7691 76923) iASL Compiler/Disassembler 7693 7694Implemented ACPI 2.0B grammar change that disallows all Type 1 and 76952 opcodes outside of a control method. This means that the 7696"executable" operators (versus the "namespace" operators) cannot 7697be used at the table level; they can only be used within a control 7698method. 7699 7700Implemented the restriction on the Scope() operator where the 7701target must already exist in the namespace at the time the 7702operator is encountered (during ASL compilation). In other words, 7703forward references are not allowed and Scope() cannot create a new 7704object. This makes the iASL compiler compatible with other ACPI 7705implementations and makes the Scope() implementation adhere to the 7706ACPI specification. 7707 7708Fixed a problem where namepath optimization for the Alias operator 7709was optimizing the wrong path (of the two namepaths.) This caused 7710a "Missing alias link" error message. 7711 7712Fixed a problem where an "unknown reserved name" warning could be 7713incorrectly generated for names like "_SB" when the trailing 7714underscore is not used in the original ASL. 7715 7716Fixed a problem where the reserved name check did not handle 7717NamePaths with multiple NameSegs correctly. The first nameseg of 7718the NamePath was examined instead of the last NameSeg. 7719 7720 7721---------------------------------------- 7722 772302 October 2002. Summary of changes for this release. 7724 7725 77261) ACPI CA Core Subsystem version 20021002: 7727 7728Fixed a problem where a store/copy of a string to an existing 7729string did not always set the string length properly in the String 7730object. 7731 7732Fixed a reported problem with the ToString operator where the 7733behavior was identical to the ToHexString operator instead of just 7734simply converting a raw buffer to a string data type. 7735 7736Fixed a problem where CopyObject and the other "explicit" 7737conversion operators were not updating the internal namespace node 7738type as part of the store operation. 7739 7740Fixed a memory leak during implicit source operand conversion 7741where the original object was not deleted if it was converted to a 7742new object of a different type. 7743 7744Enhanced error messages for all problems associated with namespace 7745lookups. Common procedure generates and prints the lookup name as 7746well as the formatted status. 7747 7748Completed implementation of a new design for the Alias support 7749within the namespace. The existing design did not handle the case 7750where a new object was assigned to one of the two names due to the 7751use of an explicit conversion operator, resulting in the two names 7752pointing to two different objects. The new design simply points 7753the Alias name to the original name node - not to the object. 7754This results in a level of indirection that must be handled in the 7755name resolution mechanism. 7756 7757Code and Data Size: Current core subsystem library sizes are shown 7758below. These are the code and data sizes for the acpica.lib 7759produced by the Microsoft Visual C++ 6.0 compiler, and these 7760values do not include any ACPI driver or OSPM code. The debug 7761version of the code includes the debug output trace mechanism and 7762has a larger code and data size. Note that these values will vary 7763depending on the efficiency of the compiler and the compiler 7764options used during generation. 7765 7766 Previous Release 7767 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7768 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7769 Current Release: 7770 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7771 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7772 7773 77742) Linux 7775 7776Initialize thermal driver's timer before it is used. (Knut 7777Neumann) 7778 7779Allow handling negative celsius values. (Kochi Takayoshi) 7780 7781Fix thermal management and make trip points. R/W (Pavel Machek) 7782 7783Fix /proc/acpi/sleep. (P. Christeas) 7784 7785IA64 fixes. (David Mosberger) 7786 7787Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7788 7789Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7790Brodowski) 7791 7792 77933) iASL Compiler/Disassembler 7794 7795Clarified some warning/error messages. 7796 7797 7798---------------------------------------- 779918 September 2002. Summary of changes for this release. 7800 7801 78021) ACPI CA Core Subsystem version 20020918: 7803 7804Fixed a reported problem with reference chaining (via the Index() 7805and RefOf() operators) in the ObjectType() and SizeOf() operators. 7806The definition of these operators includes the dereferencing of 7807all chained references to return information on the base object. 7808 7809Fixed a problem with stores to indexed package elements - the 7810existing code would not complete the store if an "implicit 7811conversion" was not performed. In other words, if the existing 7812object (package element) was to be replaced completely, the code 7813didn't handle this case. 7814 7815Relaxed typechecking on the ASL "Scope" operator to allow the 7816target name to refer to an object of type Integer, String, or 7817Buffer, in addition to the scoping object types (Device, 7818predefined Scopes, Processor, PowerResource, and ThermalZone.) 7819This allows existing AML code that has workarounds for a bug in 7820Windows to function properly. A warning is issued, however. This 7821affects both the AML interpreter and the iASL compiler. Below is 7822an example of this type of ASL code: 7823 7824 Name(DEB,0x00) 7825 Scope(DEB) 7826 { 7827 7828Fixed some reported problems with 64-bit integer support in the 7829local implementation of C library functions (clib.c) 7830 7831 78322) Linux 7833 7834Use ACPI fix map region instead of IOAPIC region, since it is 7835undefined in non-SMP. 7836 7837Ensure that the SCI has the proper polarity and trigger, even on 7838systems that do not have an interrupt override entry in the MADT. 7839 78402.5 big driver reorganization (Pat Mochel) 7841 7842Use early table mapping code from acpitable.c (Andi Kleen) 7843 7844New blacklist entries (Andi Kleen) 7845 7846Blacklist improvements. Split blacklist code out into a separate 7847file. Move checking the blacklist to very early. Previously, we 7848would use ACPI tables, and then halfway through init, check the 7849blacklist -- too late. Now, it's early enough to completely fall- 7850back to non-ACPI. 7851 7852 78533) iASL Compiler/Disassembler version 20020918: 7854 7855Fixed a problem where the typechecking code didn't know that an 7856alias could point to a method. In other words, aliases were not 7857being dereferenced during typechecking. 7858 7859 7860---------------------------------------- 786129 August 2002. Summary of changes for this release. 7862 78631) ACPI CA Core Subsystem Version 20020829: 7864 7865If the target of a Scope() operator already exists, it must be an 7866object type that actually opens a scope -- such as a Device, 7867Method, Scope, etc. This is a fatal runtime error. Similar error 7868check has been added to the iASL compiler also. 7869 7870Tightened up the namespace load to disallow multiple names in the 7871same scope. This previously was allowed if both objects were of 7872the same type. (i.e., a lookup was the same as entering a new 7873name). 7874 7875 78762) Linux 7877 7878Ensure that the ACPI interrupt has the proper trigger and 7879polarity. 7880 7881local_irq_disable is extraneous. (Matthew Wilcox) 7882 7883Make "acpi=off" actually do what it says, and not use the ACPI 7884interpreter *or* the tables. 7885 7886Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7887Takayoshi) 7888 7889 78903) iASL Compiler/Disassembler Version 20020829: 7891 7892Implemented namepath optimization for name declarations. For 7893example, a declaration like "Method (\_SB_.ABCD)" would get 7894optimized to "Method (ABCD)" if the declaration is within the 7895\_SB_ scope. This optimization is in addition to the named 7896reference path optimization first released in the previous 7897version. This would seem to complete all possible optimizations 7898for namepaths within the ASL/AML. 7899 7900If the target of a Scope() operator already exists, it must be an 7901object type that actually opens a scope -- such as a Device, 7902Method, Scope, etc. 7903 7904Implemented a check and warning for unreachable code in the same 7905block below a Return() statement. 7906 7907Fixed a problem where the listing file was not generated if the 7908compiler aborted if the maximum error count was exceeded (200). 7909 7910Fixed a problem where the typechecking of method return values was 7911broken. This includes the check for a return value when the 7912method is invoked as a TermArg (a return value is expected.) 7913 7914Fixed a reported problem where EOF conditions during a quoted 7915string or comment caused a fault. 7916 7917 7918---------------------------------------- 791915 August 2002. Summary of changes for this release. 7920 79211) ACPI CA Core Subsystem Version 20020815: 7922 7923Fixed a reported problem where a Store to a method argument that 7924contains a reference did not perform the indirect store correctly. 7925This problem was created during the conversion to the new 7926reference object model - the indirect store to a method argument 7927code was not updated to reflect the new model. 7928 7929Reworked the ACPI mode change code to better conform to ACPI 2.0, 7930handle corner cases, and improve code legibility (Kochi Takayoshi) 7931 7932Fixed a problem with the pathname parsing for the carat (^) 7933prefix. The heavy use of the carat operator by the new namepath 7934optimization in the iASL compiler uncovered a problem with the AML 7935interpreter handling of this prefix. In the case where one or 7936more carats precede a single nameseg, the nameseg was treated as 7937standalone and the search rule (to root) was inadvertently 7938applied. This could cause both the iASL compiler and the 7939interpreter to find the wrong object or to miss the error that 7940should occur if the object does not exist at that exact pathname. 7941 7942Found and fixed the problem where the HP Pavilion DSDT would not 7943load. This was a relatively minor tweak to the table loading code 7944(a problem caused by the unexpected encounter with a method 7945invocation not within a control method), but it does not solve the 7946overall issue of the execution of AML code at the table level. 7947This investigation is still ongoing. 7948 7949Code and Data Size: Current core subsystem library sizes are shown 7950below. These are the code and data sizes for the acpica.lib 7951produced by the Microsoft Visual C++ 6.0 compiler, and these 7952values do not include any ACPI driver or OSPM code. The debug 7953version of the code includes the debug output trace mechanism and 7954has a larger code and data size. Note that these values will vary 7955depending on the efficiency of the compiler and the compiler 7956options used during generation. 7957 7958 Previous Release 7959 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7960 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7961 Current Release: 7962 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7963 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7964 7965 79662) Linux 7967 7968Remove redundant slab.h include (Brad Hards) 7969 7970Fix several bugs in thermal.c (Herbert Nachtnebel) 7971 7972Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7973 7974Change acpi_system_suspend to use updated irq functions (Pavel 7975Machek) 7976 7977Export acpi_get_firmware_table (Matthew Wilcox) 7978 7979Use proper root proc entry for ACPI (Kochi Takayoshi) 7980 7981Fix early-boot table parsing (Bjorn Helgaas) 7982 7983 79843) iASL Compiler/Disassembler 7985 7986Reworked the compiler options to make them more consistent and to 7987use two-letter options where appropriate. We were running out of 7988sensible letters. This may break some makefiles, so check the 7989current options list by invoking the compiler with no parameters. 7990 7991Completed the design and implementation of the ASL namepath 7992optimization option for the compiler. This option optimizes all 7993references to named objects to the shortest possible path. The 7994first attempt tries to utilize a single nameseg (4 characters) and 7995the "search-to-root" algorithm used by the interpreter. If that 7996cannot be used (because either the name is not in the search path 7997or there is a conflict with another object with the same name), 7998the pathname is optimized using the carat prefix (usually a 7999shorter string than specifying the entire path from the root.) 8000 8001Implemented support to obtain the DSDT from the Windows registry 8002(when the disassembly option is specified with no input file). 8003Added this code as the implementation for AcpiOsTableOverride in 8004the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8005utility) to scan memory for the DSDT to the AcpiOsTableOverride 8006function in the DOS OSL to make the disassembler truly OS 8007independent. 8008 8009Implemented a new option to disassemble and compile in one step. 8010When used without an input filename, this option will grab the 8011DSDT from the local machine, disassemble it, and compile it in one 8012step. 8013 8014Added a warning message for invalid escapes (a backslash followed 8015by any character other than the allowable escapes). This catches 8016the quoted string error "\_SB_" (which should be "\\_SB_" ). 8017 8018Also, there are numerous instances in the ACPI specification where 8019this error occurs. 8020 8021Added a compiler option to disable all optimizations. This is 8022basically the "compatibility mode" because by using this option, 8023the AML code will come out exactly the same as other ASL 8024compilers. 8025 8026Added error messages for incorrectly ordered dependent resource 8027functions. This includes: missing EndDependentFn macro at end of 8028dependent resource list, nested dependent function macros (both 8029start and end), and missing StartDependentFn macro. These are 8030common errors that should be caught at compile time. 8031 8032Implemented _OSI support for the disassembler and compiler. _OSI 8033must be included in the namespace for proper disassembly (because 8034the disassembler must know the number of arguments.) 8035 8036Added an "optimization" message type that is optional (off by 8037default). This message is used for all optimizations - including 8038constant folding, integer optimization, and namepath optimization. 8039 8040---------------------------------------- 804125 July 2002. Summary of changes for this release. 8042 8043 80441) ACPI CA Core Subsystem Version 20020725: 8045 8046The AML Disassembler has been enhanced to produce compilable ASL 8047code and has been integrated into the iASL compiler (see below) as 8048well as the single-step disassembly for the AML debugger and the 8049disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8050resource templates and macros are fully supported. The 8051disassembler has been tested on over 30 different AML files, 8052producing identical AML when the resulting disassembled ASL file 8053is recompiled with the same ASL compiler. 8054 8055Modified the Resource Manager to allow zero interrupts and zero 8056dma channels during the GetCurrentResources call. This was 8057causing problems on some platforms. 8058 8059Added the AcpiOsRedirectOutput interface to the OSL to simplify 8060output redirection for the AcpiOsPrintf and AcpiOsVprintf 8061interfaces. 8062 8063Code and Data Size: Current core subsystem library sizes are shown 8064below. These are the code and data sizes for the acpica.lib 8065produced by the Microsoft Visual C++ 6.0 compiler, and these 8066values do not include any ACPI driver or OSPM code. The debug 8067version of the code includes the debug output trace mechanism and 8068has a larger code and data size. Note that these values will vary 8069depending on the efficiency of the compiler and the compiler 8070options used during generation. 8071 8072 Previous Release 8073 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8074 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8075 Current Release: 8076 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8077 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8078 8079 80802) Linux 8081 8082Fixed a panic in the EC driver (Dominik Brodowski) 8083 8084Implemented checksum of the R/XSDT itself during Linux table scan 8085(Richard Schaal) 8086 8087 80883) iASL compiler 8089 8090The AML disassembler is integrated into the compiler. The "-d" 8091option invokes the disassembler to completely disassemble an 8092input AML file, producing as output a text ASL file with the 8093extension ".dsl" (to avoid name collisions with existing .asl 8094source files.) A future enhancement will allow the disassembler 8095to obtain the BIOS DSDT from the registry under Windows. 8096 8097Fixed a problem with the VendorShort and VendorLong resource 8098descriptors where an invalid AML sequence was created. 8099 8100Implemented a fix for BufferData term in the ASL parser. It was 8101inadvertently defined twice, allowing invalid syntax to pass and 8102causing reduction conflicts. 8103 8104Fixed a problem where the Ones opcode could get converted to a 8105value of zero if "Ones" was used where a byte, word or dword value 8106was expected. The 64-bit value is now truncated to the correct 8107size with the correct value. 8108 8109 8110 8111---------------------------------------- 811202 July 2002. Summary of changes for this release. 8113 8114 81151) ACPI CA Core Subsystem Version 20020702: 8116 8117The Table Manager code has been restructured to add several new 8118features. Tables that are not required by the core subsystem 8119(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8120validated in any way and are returned from AcpiGetFirmwareTable if 8121requested. The AcpiOsTableOverride interface is now called for 8122each table that is loaded by the subsystem in order to allow the 8123host to override any table it chooses. Previously, only the DSDT 8124could be overridden. Added one new files, tbrsdt.c and 8125tbgetall.c. 8126 8127Fixed a problem with the conversion of internal package objects to 8128external objects (when a package is returned from a control 8129method.) The return buffer length was set to zero instead of the 8130proper length of the package object. 8131 8132Fixed a reported problem with the use of the RefOf and DeRefOf 8133operators when passing reference arguments to control methods. A 8134new type of Reference object is used internally for references 8135produced by the RefOf operator. 8136 8137Added additional error messages in the Resource Manager to explain 8138AE_BAD_DATA errors when they occur during resource parsing. 8139 8140Split the AcpiEnableSubsystem into two primitives to enable a 8141finer granularity initialization sequence. These two calls should 8142be called in this order: AcpiEnableSubsystem (flags), 8143AcpiInitializeObjects (flags). The flags parameter remains the 8144same. 8145 8146 81472) Linux 8148 8149Updated the ACPI utilities module to understand the new style of 8150fully resolved package objects that are now returned from the core 8151subsystem. This eliminates errors of the form: 8152 8153 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8154 acpi_utils-0430 [145] acpi_evaluate_reference: 8155 Invalid element in package (not a device reference) 8156 8157The method evaluation utility uses the new buffer allocation 8158scheme instead of calling AcpiEvaluate Object twice. 8159 8160Added support for ECDT. This allows the use of the Embedded 8161 8162Controller before the namespace has been fully initialized, which 8163is necessary for ACPI 2.0 support, and for some laptops to 8164initialize properly. (Laptops using ECDT are still rare, so only 8165limited testing was performed of the added functionality.) 8166 8167Fixed memory leaks in the EC driver. 8168 8169Eliminated a brittle code structure in acpi_bus_init(). 8170 8171Eliminated the acpi_evaluate() helper function in utils.c. It is 8172no longer needed since acpi_evaluate_object can optionally 8173allocate memory for the return object. 8174 8175Implemented fix for keyboard hang when getting battery readings on 8176some systems (Stephen White) 8177 8178PCI IRQ routing update (Dominik Brodowski) 8179 8180Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8181support 8182 8183---------------------------------------- 818411 June 2002. Summary of changes for this release. 8185 8186 81871) ACPI CA Core Subsystem Version 20020611: 8188 8189Fixed a reported problem where constants such as Zero and One 8190appearing within _PRT packages were not handled correctly within 8191the resource manager code. Originally reported against the ASL 8192compiler because the code generator now optimizes integers to 8193their minimal AML representation (i.e. AML constants if possible.) 8194The _PRT code now handles all AML constant opcodes correctly 8195(Zero, One, Ones, Revision). 8196 8197Fixed a problem with the Concatenate operator in the AML 8198interpreter where a buffer result object was incorrectly marked as 8199not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8200 8201All package sub-objects are now fully resolved before they are 8202returned from the external ACPI interfaces. This means that name 8203strings are resolved to object handles, and constant operators 8204(Zero, One, Ones, Revision) are resolved to Integers. 8205 8206Implemented immediate resolution of the AML Constant opcodes 8207(Zero, One, Ones, Revision) to Integer objects upon detection 8208within the AML stream. This has simplified and reduced the 8209generated code size of the subsystem by eliminating about 10 8210switch statements for these constants (which previously were 8211contained in Reference objects.) The complicating issues are that 8212the Zero opcode is used as a "placeholder" for unspecified 8213optional target operands and stores to constants are defined to be 8214no-ops. 8215 8216Code and Data Size: Current core subsystem library sizes are shown 8217below. These are the code and data sizes for the acpica.lib 8218produced by the Microsoft Visual C++ 6.0 compiler, and these 8219values do not include any ACPI driver or OSPM code. The debug 8220version of the code includes the debug output trace mechanism and 8221has a larger code and data size. Note that these values will vary 8222depending on the efficiency of the compiler and the compiler 8223options used during generation. 8224 8225 Previous Release 8226 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8227 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8228 Current Release: 8229 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8230 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8231 8232 82332) Linux 8234 8235 8236Added preliminary support for obtaining _TRA data for PCI root 8237bridges (Bjorn Helgaas). 8238 8239 82403) iASL Compiler Version X2046: 8241 8242Fixed a problem where the "_DDN" reserved name was defined to be a 8243control method with one argument. There are no arguments, and 8244_DDN does not have to be a control method. 8245 8246Fixed a problem with the Linux version of the compiler where the 8247source lines printed with error messages were the wrong lines. 8248This turned out to be the "LF versus CR/LF" difference between 8249Windows and Unix. This appears to be the longstanding issue 8250concerning listing output and error messages. 8251 8252Fixed a problem with the Linux version of compiler where opcode 8253names within error messages were wrong. This was caused by a 8254slight difference in the output of the Flex tool on Linux versus 8255Windows. 8256 8257Fixed a problem with the Linux compiler where the hex output files 8258contained some garbage data caused by an internal buffer overrun. 8259 8260 8261---------------------------------------- 826217 May 2002. Summary of changes for this release. 8263 8264 82651) ACPI CA Core Subsystem Version 20020517: 8266 8267Implemented a workaround to an BIOS bug discovered on the HP 8268OmniBook where the FADT revision number and the table size are 8269inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8270behavior is to fallback to using only the ACPI 1.0 fields of the 8271FADT if the table is too small to be a ACPI 2.0 table as claimed 8272by the revision number. Although this is a BIOS bug, this is a 8273case where the workaround is simple enough and with no side 8274effects, so it seemed prudent to add it. A warning message is 8275issued, however. 8276 8277Implemented minimum size checks for the fixed-length ACPI tables - 8278- the FADT and FACS, as well as consistency checks between the 8279revision number and the table size. 8280 8281Fixed a reported problem in the table override support where the 8282new table pointer was incorrectly treated as a physical address 8283instead of a logical address. 8284 8285Eliminated the use of the AE_AML_ERROR exception and replaced it 8286with more descriptive codes. 8287 8288Fixed a problem where an exception would occur if an ASL Field was 8289defined with no named Field Units underneath it (used by some 8290index fields). 8291 8292Code and Data Size: Current core subsystem library sizes are shown 8293below. These are the code and data sizes for the acpica.lib 8294produced by the Microsoft Visual C++ 6.0 compiler, and these 8295values do not include any ACPI driver or OSPM code. The debug 8296version of the code includes the debug output trace mechanism and 8297has a larger code and data size. Note that these values will vary 8298depending on the efficiency of the compiler and the compiler 8299options used during generation. 8300 8301 Previous Release 8302 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8303 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8304 Current Release: 8305 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8306 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8307 8308 8309 83102) Linux 8311 8312Much work done on ACPI init (MADT and PCI IRQ routing support). 8313(Paul D. and Dominik Brodowski) 8314 8315Fix PCI IRQ-related panic on boot (Sam Revitch) 8316 8317Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8318 8319Fix "MHz" typo (Dominik Brodowski) 8320 8321Fix RTC year 2000 issue (Dominik Brodowski) 8322 8323Preclude multiple button proc entries (Eric Brunet) 8324 8325Moved arch-specific code out of include/platform/aclinux.h 8326 83273) iASL Compiler Version X2044: 8328 8329Implemented error checking for the string used in the EISAID macro 8330(Usually used in the definition of the _HID object.) The code now 8331strictly enforces the PnP format - exactly 7 characters, 3 8332uppercase letters and 4 hex digits. 8333 8334If a raw string is used in the definition of the _HID object 8335(instead of the EISAID macro), the string must contain all 8336alphanumeric characters (e.g., "*PNP0011" is not allowed because 8337of the asterisk.) 8338 8339Implemented checking for invalid use of ACPI reserved names for 8340most of the name creation operators (Name, Device, Event, Mutex, 8341OperationRegion, PowerResource, Processor, and ThermalZone.) 8342Previously, this check was only performed for control methods. 8343 8344Implemented an additional check on the Name operator to emit an 8345error if a reserved name that must be implemented in ASL as a 8346control method is used. We know that a reserved name must be a 8347method if it is defined with input arguments. 8348 8349The warning emitted when a namespace object reference is not found 8350during the cross reference phase has been changed into an error. 8351The "External" directive should be used for names defined in other 8352modules. 8353 8354 83554) Tools and Utilities 8356 8357The 16-bit tools (adump16 and aexec16) have been regenerated and 8358tested. 8359 8360Fixed a problem with the output of both acpidump and adump16 where 8361the indentation of closing parentheses and brackets was not 8362 8363aligned properly with the parent block. 8364 8365 8366---------------------------------------- 836703 May 2002. Summary of changes for this release. 8368 8369 83701) ACPI CA Core Subsystem Version 20020503: 8371 8372Added support a new OSL interface that allows the host operating 8373 8374system software to override the DSDT found in the firmware - 8375AcpiOsTableOverride. With this interface, the OSL can examine the 8376version of the firmware DSDT and replace it with a different one 8377if desired. 8378 8379Added new external interfaces for accessing ACPI registers from 8380device drivers and other system software - AcpiGetRegister and 8381AcpiSetRegister. This was simply an externalization of the 8382existing AcpiHwBitRegister interfaces. 8383 8384Fixed a regression introduced in the previous build where the 8385ASL/AML CreateField operator always returned an error, 8386"destination must be a NS Node". 8387 8388Extended the maximum time (before failure) to successfully enable 8389ACPI mode to 3 seconds. 8390 8391Code and Data Size: Current core subsystem library sizes are shown 8392below. These are the code and data sizes for the acpica.lib 8393produced by the Microsoft Visual C++ 6.0 compiler, and these 8394values do not include any ACPI driver or OSPM code. The debug 8395version of the code includes the debug output trace mechanism and 8396has a larger code and data size. Note that these values will vary 8397depending on the efficiency of the compiler and the compiler 8398options used during generation. 8399 8400 Previous Release 8401 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8402 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8403 Current Release: 8404 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8405 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8406 8407 84082) Linux 8409 8410Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8411free. While 3 out of 4 of our in-house systems work fine, the last 8412one still hangs when testing the LAPIC timer. 8413 8414Renamed many files in 2.5 kernel release to omit "acpi_" from the 8415name. 8416 8417Added warning on boot for Presario 711FR. 8418 8419Sleep improvements (Pavel Machek) 8420 8421ACPI can now be built without CONFIG_PCI enabled. 8422 8423IA64: Fixed memory map functions (JI Lee) 8424 8425 84263) iASL Compiler Version X2043: 8427 8428Added support to allow the compiler to be integrated into the MS 8429VC++ development environment for one-button compilation of single 8430files or entire projects -- with error-to-source-line mapping. 8431 8432Implemented support for compile-time constant folding for the 8433Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8434specification. This allows the ASL writer to use expressions 8435instead of Integer/Buffer/String constants in terms that must 8436evaluate to constants at compile time and will also simplify the 8437emitted AML in any such sub-expressions that can be folded 8438(evaluated at compile-time.) This increases the size of the 8439compiler significantly because a portion of the ACPI CA AML 8440interpreter is included within the compiler in order to pre- 8441evaluate constant expressions. 8442 8443 8444Fixed a problem with the "Unicode" ASL macro that caused the 8445compiler to fault. (This macro is used in conjunction with the 8446_STR reserved name.) 8447 8448Implemented an AML opcode optimization to use the Zero, One, and 8449Ones opcodes where possible to further reduce the size of integer 8450constants and thus reduce the overall size of the generated AML 8451code. 8452 8453Implemented error checking for new reserved terms for ACPI version 84542.0A. 8455 8456Implemented the -qr option to display the current list of ACPI 8457reserved names known to the compiler. 8458 8459Implemented the -qc option to display the current list of ASL 8460operators that are allowed within constant expressions and can 8461therefore be folded at compile time if the operands are constants. 8462 8463 84644) Documentation 8465 8466Updated the Programmer's Reference for new interfaces, data types, 8467and memory allocation model options. 8468 8469Updated the iASL Compiler User Reference to apply new format and 8470add information about new features and options. 8471 8472---------------------------------------- 847319 April 2002. Summary of changes for this release. 8474 84751) ACPI CA Core Subsystem Version 20020419: 8476 8477The source code base for the Core Subsystem has been completely 8478cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8479versions. The Lint option files used are included in the 8480/acpi/generate/lint directory. 8481 8482Implemented enhanced status/error checking across the entire 8483Hardware manager subsystem. Any hardware errors (reported from 8484the OSL) are now bubbled up and will abort a running control 8485method. 8486 8487 8488Fixed a problem where the per-ACPI-table integer width (32 or 64) 8489was stored only with control method nodes, causing a fault when 8490non-control method code was executed during table loading. The 8491solution implemented uses a global variable to indicate table 8492width across the entire ACPI subsystem. Therefore, ACPI CA does 8493not support mixed integer widths across different ACPI tables 8494(DSDT, SSDT). 8495 8496Fixed a problem where NULL extended fields (X fields) in an ACPI 84972.0 ACPI FADT caused the table load to fail. Although the 8498existing ACPI specification is a bit fuzzy on this topic, the new 8499behavior is to fall back on a ACPI 1.0 field if the corresponding 8500ACPI 2.0 X field is zero (even though the table revision indicates 8501a full ACPI 2.0 table.) The ACPI specification will be updated to 8502clarify this issue. 8503 8504Fixed a problem with the SystemMemory operation region handler 8505where memory was always accessed byte-wise even if the AML- 8506specified access width was larger than a byte. This caused 8507problems on systems with memory-mapped I/O. Memory is now 8508accessed with the width specified. On systems that do not support 8509non-aligned transfers, a check is made to guarantee proper address 8510alignment before proceeding in order to avoid an AML-caused 8511alignment fault within the kernel. 8512 8513 8514Fixed a problem with the ExtendedIrq resource where only one byte 8515of the 4-byte Irq field was extracted. 8516 8517Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8518function was out of date and required a rewrite. 8519 8520Code and Data Size: Current core subsystem library sizes are shown 8521below. These are the code and data sizes for the acpica.lib 8522produced by the Microsoft Visual C++ 6.0 compiler, and these 8523values do not include any ACPI driver or OSPM code. The debug 8524version of the code includes the debug output trace mechanism and 8525has a larger code and data size. Note that these values will vary 8526depending on the efficiency of the compiler and the compiler 8527options used during generation. 8528 8529 Previous Release 8530 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8531 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8532 Current Release: 8533 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8534 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8535 8536 85372) Linux 8538 8539PCI IRQ routing fixes (Dominik Brodowski) 8540 8541 85423) iASL Compiler Version X2042: 8543 8544Implemented an additional compile-time error check for a field 8545unit whose size + minimum access width would cause a run-time 8546access beyond the end-of-region. Previously, only the field size 8547itself was checked. 8548 8549The Core subsystem and iASL compiler now share a common parse 8550object in preparation for compile-time evaluation of the type 85513/4/5 ASL operators. 8552 8553 8554---------------------------------------- 8555Summary of changes for this release: 03_29_02 8556 85571) ACPI CA Core Subsystem Version 20020329: 8558 8559Implemented support for late evaluation of TermArg operands to 8560Buffer and Package objects. This allows complex expressions to be 8561used in the declarations of these object types. 8562 8563Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 85641.0, if the field was larger than 32 bits, it was returned as a 8565buffer - otherwise it was returned as an integer. In ACPI 2.0, 8566the field is returned as a buffer only if the field is larger than 856764 bits. The TableRevision is now considered when making this 8568conversion to avoid incompatibility with existing ASL code. 8569 8570Implemented logical addressing for AcpiOsGetRootPointer. This 8571allows an RSDP with either a logical or physical address. With 8572this support, the host OS can now override all ACPI tables with 8573one logical RSDP. Includes implementation of "typed" pointer 8574support to allow a common data type for both physical and logical 8575pointers internally. This required a change to the 8576AcpiOsGetRootPointer interface. 8577 8578Implemented the use of ACPI 2.0 Generic Address Structures for all 8579GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8580mapped I/O for these ACPI features. 8581 8582Initialization now ignores not only non-required tables (All 8583tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8584not validate the table headers of unrecognized tables. 8585 8586Fixed a problem where a notify handler could only be 8587installed/removed on an object of type Device. All "notify" 8588 8589objects are now supported -- Devices, Processor, Power, and 8590Thermal. 8591 8592Removed most verbosity from the ACPI_DB_INFO debug level. Only 8593critical information is returned when this debug level is enabled. 8594 8595Code and Data Size: Current core subsystem library sizes are shown 8596below. These are the code and data sizes for the acpica.lib 8597produced by the Microsoft Visual C++ 6.0 compiler, and these 8598values do not include any ACPI driver or OSPM code. The debug 8599version of the code includes the debug output trace mechanism and 8600has a larger code and data size. Note that these values will vary 8601depending on the efficiency of the compiler and the compiler 8602options used during generation. 8603 8604 Previous Release 8605 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8606 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8607 Current Release: 8608 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8609 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8610 8611 86122) Linux: 8613 8614The processor driver (acpi_processor.c) now fully supports ACPI 86152.0-based processor performance control (e.g. Intel(R) 8616SpeedStep(TM) technology) Note that older laptops that only have 8617the Intel "applet" interface are not supported through this. The 8618'limit' and 'performance' interface (/proc) are fully functional. 8619[Note that basic policy for controlling performance state 8620transitions will be included in the next version of ospmd.] The 8621idle handler was modified to more aggressively use C2, and PIIX4 8622errata handling underwent a complete overhaul (big thanks to 8623Dominik Brodowski). 8624 8625Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8626based devices in the ACPI namespace are now dynamically bound 8627(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8628This allows, among other things, ACPI to resolve bus numbers for 8629subordinate PCI bridges. 8630 8631Enhanced PCI IRQ routing to get the proper bus number for _PRT 8632entries defined underneath PCI bridges. 8633 8634Added IBM 600E to bad bios list due to invalid _ADR value for 8635PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8636 8637In the process of adding full MADT support (e.g. IOAPIC) for IA32 8638(acpi.c, mpparse.c) -- stay tuned. 8639 8640Added back visual differentiation between fixed-feature and 8641control-method buttons in dmesg. Buttons are also subtyped (e.g. 8642button/power/PWRF) to simplify button identification. 8643 8644We no longer use -Wno-unused when compiling debug. Please ignore 8645any "_THIS_MODULE defined but not used" messages. 8646 8647Can now shut down the system using "magic sysrq" key. 8648 8649 86503) iASL Compiler version 2041: 8651 8652Fixed a problem where conversion errors for hex/octal/decimal 8653constants were not reported. 8654 8655Implemented a fix for the General Register template Address field. 8656This field was 8 bits when it should be 64. 8657 8658Fixed a problem where errors/warnings were no longer being emitted 8659within the listing output file. 8660 8661Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8662exactly 4 characters, alphanumeric only. 8663 8664 8665 8666 8667---------------------------------------- 8668Summary of changes for this release: 03_08_02 8669 8670 86711) ACPI CA Core Subsystem Version 20020308: 8672 8673Fixed a problem with AML Fields where the use of the "AccessAny" 8674keyword could cause an interpreter error due to attempting to read 8675or write beyond the end of the parent Operation Region. 8676 8677Fixed a problem in the SystemMemory Operation Region handler where 8678an attempt was made to map memory beyond the end of the region. 8679This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8680errors on some Linux systems. 8681 8682Fixed a problem where the interpreter/namespace "search to root" 8683algorithm was not functioning for some object types. Relaxed the 8684internal restriction on the search to allow upsearches for all 8685external object types as well as most internal types. 8686 8687 86882) Linux: 8689 8690We now use safe_halt() macro versus individual calls to sti | hlt. 8691 8692Writing to the processor limit interface should now work. "echo 1" 8693will increase the limit, 2 will decrease, and 0 will reset to the 8694 8695default. 8696 8697 86983) ASL compiler: 8699 8700Fixed segfault on Linux version. 8701 8702 8703---------------------------------------- 8704Summary of changes for this release: 02_25_02 8705 87061) ACPI CA Core Subsystem: 8707 8708 8709Fixed a problem where the GPE bit masks were not initialized 8710properly, causing erratic GPE behavior. 8711 8712Implemented limited support for multiple calling conventions. The 8713code can be generated with either the VPL (variable parameter 8714list, or "C") convention, or the FPL (fixed parameter list, or 8715"Pascal") convention. The core subsystem is about 3.4% smaller 8716when generated with FPL. 8717 8718 87192) Linux 8720 8721Re-add some /proc/acpi/event functionality that was lost during 8722the rewrite 8723 8724Resolved issue with /proc events for fixed-feature buttons showing 8725up as the system device. 8726 8727Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8728 8729Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8730 8731Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8732 8733Fixed limit interface & usage to fix bugs with passive cooling 8734hysterisis. 8735 8736Restructured PRT support. 8737 8738 8739---------------------------------------- 8740Summary of changes for this label: 02_14_02 8741 8742 87431) ACPI CA Core Subsystem: 8744 8745Implemented support in AcpiLoadTable to allow loading of FACS and 8746FADT tables. 8747 8748Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8749been removed. All 64-bit platforms should be migrated to the ACPI 87502.0 tables. The actbl71.h header has been removed from the source 8751tree. 8752 8753All C macros defined within the subsystem have been prefixed with 8754"ACPI_" to avoid collision with other system include files. 8755 8756Removed the return value for the two AcpiOsPrint interfaces, since 8757it is never used and causes lint warnings for ignoring the return 8758value. 8759 8760Added error checking to all internal mutex acquire and release 8761calls. Although a failure from one of these interfaces is 8762probably a fatal system error, these checks will cause the 8763immediate abort of the currently executing method or interface. 8764 8765Fixed a problem where the AcpiSetCurrentResources interface could 8766fault. This was a side effect of the deployment of the new memory 8767allocation model. 8768 8769Fixed a couple of problems with the Global Lock support introduced 8770in the last major build. The "common" (1.0/2.0) internal FACS was 8771being overwritten with the FACS signature and clobbering the 8772Global Lock pointer. Also, the actual firmware FACS was being 8773unmapped after construction of the "common" FACS, preventing 8774access to the actual Global Lock field within it. The "common" 8775internal FACS is no longer installed as an actual ACPI table; it 8776is used simply as a global. 8777 8778Code and Data Size: Current core subsystem library sizes are shown 8779below. These are the code and data sizes for the acpica.lib 8780produced by the Microsoft Visual C++ 6.0 compiler, and these 8781values do not include any ACPI driver or OSPM code. The debug 8782version of the code includes the debug output trace mechanism and 8783has a larger code and data size. Note that these values will vary 8784depending on the efficiency of the compiler and the compiler 8785options used during generation. 8786 8787 Previous Release (02_07_01) 8788 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8789 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8790 Current Release: 8791 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8792 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8793 8794 87952) Linux 8796 8797Updated Linux-specific code for core macro and OSL interface 8798changes described above. 8799 8800Improved /proc/acpi/event. It now can be opened only once and has 8801proper poll functionality. 8802 8803Fixed and restructured power management (acpi_bus). 8804 8805Only create /proc "view by type" when devices of that class exist. 8806 8807Fixed "charging/discharging" bug (and others) in acpi_battery. 8808 8809Improved thermal zone code. 8810 8811 88123) ASL Compiler, version X2039: 8813 8814 8815Implemented the new compiler restriction on ASL String hex/octal 8816escapes to non-null, ASCII values. An error results if an invalid 8817value is used. (This will require an ACPI 2.0 specification 8818change.) 8819 8820AML object labels that are output to the optional C and ASM source 8821are now prefixed with both the ACPI table signature and table ID 8822to help guarantee uniqueness within a large BIOS project. 8823 8824 8825---------------------------------------- 8826Summary of changes for this label: 02_01_02 8827 88281) ACPI CA Core Subsystem: 8829 8830ACPI 2.0 support is complete in the entire Core Subsystem and the 8831ASL compiler. All new ACPI 2.0 operators are implemented and all 8832other changes for ACPI 2.0 support are complete. With 8833simultaneous code and data optimizations throughout the subsystem, 8834ACPI 2.0 support has been implemented with almost no additional 8835cost in terms of code and data size. 8836 8837Implemented a new mechanism for allocation of return buffers. If 8838the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8839be allocated on behalf of the caller. Consolidated all return 8840buffer validation and allocation to a common procedure. Return 8841buffers will be allocated via the primary OSL allocation interface 8842since it appears that a separate pool is not needed by most users. 8843If a separate pool is required for these buffers, the caller can 8844still use the original mechanism and pre-allocate the buffer(s). 8845 8846Implemented support for string operands within the DerefOf 8847operator. 8848 8849Restructured the Hardware and Event managers to be table driven, 8850simplifying the source code and reducing the amount of generated 8851code. 8852 8853Split the common read/write low-level ACPI register bitfield 8854procedure into a separate read and write, simplifying the code 8855considerably. 8856 8857Obsoleted the AcpiOsCallocate OSL interface. This interface was 8858used only a handful of times and didn't have enough critical mass 8859for a separate interface. Replaced with a common calloc procedure 8860in the core. 8861 8862Fixed a reported problem with the GPE number mapping mechanism 8863that allows GPE1 numbers to be non-contiguous with GPE0. 8864Reorganized the GPE information and shrunk a large array that was 8865originally large enough to hold info for all possible GPEs (256) 8866to simply large enough to hold all GPEs up to the largest GPE 8867number on the machine. 8868 8869Fixed a reported problem with resource structure alignment on 64- 8870bit platforms. 8871 8872Changed the AcpiEnableEvent and AcpiDisableEvent external 8873interfaces to not require any flags for the common case of 8874enabling/disabling a GPE. 8875 8876Implemented support to allow a "Notify" on a Processor object. 8877 8878Most TBDs in comments within the source code have been resolved 8879and eliminated. 8880 8881 8882Fixed a problem in the interpreter where a standalone parent 8883prefix (^) was not handled correctly in the interpreter and 8884debugger. 8885 8886Removed obsolete and unnecessary GPE save/restore code. 8887 8888Implemented Field support in the ASL Load operator. This allows a 8889table to be loaded from a named field, in addition to loading a 8890table directly from an Operation Region. 8891 8892Implemented timeout and handle support in the external Global Lock 8893interfaces. 8894 8895Fixed a problem in the AcpiDump utility where pathnames were no 8896longer being generated correctly during the dump of named objects. 8897 8898Modified the AML debugger to give a full display of if/while 8899predicates instead of just one AML opcode at a time. (The 8900predicate can have several nested ASL statements.) The old method 8901was confusing during single stepping. 8902 8903Code and Data Size: Current core subsystem library sizes are shown 8904below. These are the code and data sizes for the acpica.lib 8905produced by the Microsoft Visual C++ 6.0 compiler, and these 8906values do not include any ACPI driver or OSPM code. The debug 8907version of the code includes the debug output trace mechanism and 8908has a larger code and data size. Note that these values will vary 8909depending on the efficiency of the compiler and the compiler 8910options used during generation. 8911 8912 Previous Release (12_18_01) 8913 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8914 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8915 Current Release: 8916 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8917 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8918 89192) Linux 8920 8921 Implemented fix for PIIX reverse throttling errata (Processor 8922driver) 8923 8924Added new Limit interface (Processor and Thermal drivers) 8925 8926New thermal policy (Thermal driver) 8927 8928Many updates to /proc 8929 8930Battery "low" event support (Battery driver) 8931 8932Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8933 8934IA32 - IA64 initialization unification, no longer experimental 8935 8936Menuconfig options redesigned 8937 89383) ASL Compiler, version X2037: 8939 8940Implemented several new output features to simplify integration of 8941AML code into firmware: 1) Output the AML in C source code with 8942labels for each named ASL object. The original ASL source code 8943is interleaved as C comments. 2) Output the AML in ASM source code 8944with labels and interleaved ASL source. 3) Output the AML in 8945raw hex table form, in either C or ASM. 8946 8947Implemented support for optional string parameters to the 8948LoadTable operator. 8949 8950Completed support for embedded escape sequences within string 8951literals. The compiler now supports all single character escapes 8952as well as the Octal and Hex escapes. Note: the insertion of a 8953null byte into a string literal (via the hex/octal escape) causes 8954the string to be immediately terminated. A warning is issued. 8955 8956Fixed a problem where incorrect AML was generated for the case 8957where an ASL namepath consists of a single parent prefix ( 8958 8959) with no trailing name segments. 8960 8961The compiler has been successfully generated with a 64-bit C 8962compiler. 8963 8964 8965 8966 8967---------------------------------------- 8968Summary of changes for this label: 12_18_01 8969 89701) Linux 8971 8972Enhanced blacklist with reason and severity fields. Any table's 8973signature may now be used to identify a blacklisted system. 8974 8975Call _PIC control method to inform the firmware which interrupt 8976model the OS is using. Turn on any disabled link devices. 8977 8978Cleaned up busmgr /proc error handling (Andreas Dilger) 8979 8980 2) ACPI CA Core Subsystem: 8981 8982Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8983while loop) 8984 8985Completed implementation of the ACPI 2.0 "Continue", 8986"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8987operators. All new ACPI 2.0 operators are now implemented in both 8988the ASL compiler and the AML interpreter. The only remaining ACPI 89892.0 task is support for the String data type in the DerefOf 8990operator. Fixed a problem with AcquireMutex where the status code 8991was lost if the caller had to actually wait for the mutex. 8992 8993Increased the maximum ASL Field size from 64K bits to 4G bits. 8994 8995Completed implementation of the external Global Lock interfaces -- 8996AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8997Handler parameters were added. 8998 8999Completed another pass at removing warnings and issues when 9000compiling with 64-bit compilers. The code now compiles cleanly 9001with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9002add and subtract (diff) macros have changed considerably. 9003 9004 9005Created and deployed a new ACPI_SIZE type that is 64-bits wide on 900664-bit platforms, 32-bits on all others. This type is used 9007wherever memory allocation and/or the C sizeof() operator is used, 9008and affects the OSL memory allocation interfaces AcpiOsAllocate 9009and AcpiOsCallocate. 9010 9011Implemented sticky user breakpoints in the AML debugger. 9012 9013Code and Data Size: Current core subsystem library sizes are shown 9014below. These are the code and data sizes for the acpica.lib 9015produced by the Microsoft Visual C++ 6.0 compiler, and these 9016values do not include any ACPI driver or OSPM code. The debug 9017version of the code includes the debug output trace mechanism and 9018has a larger code and data size. Note that these values will vary 9019depending on the efficiency of the compiler and the compiler 9020options used during generation. 9021 9022 Previous Release (12_05_01) 9023 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9024 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9025 Current Release: 9026 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9027 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9028 9029 3) ASL Compiler, version X2034: 9030 9031Now checks for (and generates an error if detected) the use of a 9032Break or Continue statement without an enclosing While statement. 9033 9034 9035Successfully generated the compiler with the Intel 64-bit C 9036compiler. 9037 9038 ---------------------------------------- 9039Summary of changes for this label: 12_05_01 9040 9041 1) ACPI CA Core Subsystem: 9042 9043The ACPI 2.0 CopyObject operator is fully implemented. This 9044operator creates a new copy of an object (and is also used to 9045bypass the "implicit conversion" mechanism of the Store operator.) 9046 9047The ACPI 2.0 semantics for the SizeOf operator are fully 9048implemented. The change is that performing a SizeOf on a 9049reference object causes an automatic dereference of the object to 9050tha actual value before the size is evaluated. This behavior was 9051undefined in ACPI 1.0. 9052 9053The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9054have been implemented. The interrupt polarity and mode are now 9055independently set. 9056 9057Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9058appearing in Package objects were not properly converted to 9059integers when the internal Package was converted to an external 9060object (via the AcpiEvaluateObject interface.) 9061 9062Fixed a problem with the namespace object deletion mechanism for 9063objects created by control methods. There were two parts to this 9064problem: 1) Objects created during the initialization phase method 9065parse were not being deleted, and 2) The object owner ID mechanism 9066to track objects was broken. 9067 9068Fixed a problem where the use of the ASL Scope operator within a 9069control method would result in an invalid opcode exception. 9070 9071Fixed a problem introduced in the previous label where the buffer 9072length required for the _PRT structure was not being returned 9073correctly. 9074 9075Code and Data Size: Current core subsystem library sizes are shown 9076below. These are the code and data sizes for the acpica.lib 9077produced by the Microsoft Visual C++ 6.0 compiler, and these 9078values do not include any ACPI driver or OSPM code. The debug 9079version of the code includes the debug output trace mechanism and 9080has a larger code and data size. Note that these values will vary 9081depending on the efficiency of the compiler and the compiler 9082options used during generation. 9083 9084 Previous Release (11_20_01) 9085 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9086 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9087 9088 Current Release: 9089 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9090 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9091 9092 2) Linux: 9093 9094Updated all files to apply cleanly against 2.4.16. 9095 9096Added basic PCI Interrupt Routing Table (PRT) support for IA32 9097(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9098version supports both static and dyanmic PRT entries, but dynamic 9099entries are treated as if they were static (not yet 9100reconfigurable). Architecture- specific code to use this data is 9101absent on IA32 but should be available shortly. 9102 9103Changed the initialization sequence to start the ACPI interpreter 9104(acpi_init) prior to initialization of the PCI driver (pci_init) 9105in init/main.c. This ordering is required to support PRT and 9106facilitate other (future) enhancement. A side effect is that the 9107ACPI bus driver and certain device drivers can no longer be loaded 9108as modules. 9109 9110Modified the 'make menuconfig' options to allow PCI Interrupt 9111Routing support to be included without the ACPI Bus and other 9112device drivers. 9113 9114 3) ASL Compiler, version X2033: 9115 9116Fixed some issues with the use of the new CopyObject and 9117DataTableRegion operators. Both are fully functional. 9118 9119 ---------------------------------------- 9120Summary of changes for this label: 11_20_01 9121 9122 20 November 2001. Summary of changes for this release. 9123 9124 1) ACPI CA Core Subsystem: 9125 9126Updated Index support to match ACPI 2.0 semantics. Storing a 9127Integer, String, or Buffer to an Index of a Buffer will store only 9128the least-significant byte of the source to the Indexed buffer 9129byte. Multiple writes are not performed. 9130 9131Fixed a problem where the access type used in an AccessAs ASL 9132operator was not recorded correctly into the field object. 9133 9134Fixed a problem where ASL Event objects were created in a 9135signalled state. Events are now created in an unsignalled state. 9136 9137The internal object cache is now purged after table loading and 9138initialization to reduce the use of dynamic kernel memory -- on 9139the assumption that object use is greatest during the parse phase 9140of the entire table (versus the run-time use of individual control 9141methods.) 9142 9143ACPI 2.0 variable-length packages are now fully operational. 9144 9145Code and Data Size: Code and Data optimizations have permitted new 9146feature development with an actual reduction in the library size. 9147Current core subsystem library sizes are shown below. These are 9148the code and data sizes for the acpica.lib produced by the 9149Microsoft Visual C++ 6.0 compiler, and these values do not include 9150any ACPI driver or OSPM code. The debug version of the code 9151includes the debug output trace mechanism and has a larger code 9152and data size. Note that these values will vary depending on the 9153efficiency of the compiler and the compiler options used during 9154generation. 9155 9156 Previous Release (11_09_01): 9157 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9158 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9159 9160 Current Release: 9161 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9162 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9163 9164 2) Linux: 9165 9166Enhanced the ACPI boot-time initialization code to allow the use 9167of Local APIC tables for processor enumeration on IA-32, and to 9168pave the way for a fully MPS-free boot (on SMP systems) in the 9169near future. This functionality replaces 9170arch/i386/kernel/acpitables.c, which was introduced in an earlier 91712.4.15-preX release. To enable this feature you must add 9172"acpi_boot=on" to the kernel command line -- see the help entry 9173for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9174the works... 9175 9176Restructured the configuration options to allow boot-time table 9177parsing support without inclusion of the ACPI Interpreter (and 9178other) code. 9179 9180NOTE: This release does not include fixes for the reported events, 9181power-down, and thermal passive cooling issues (coming soon). 9182 9183 3) ASL Compiler: 9184 9185Added additional typechecking for Fields within restricted access 9186Operation Regions. All fields within EC and CMOS regions must be 9187declared with ByteAcc. All fields withing SMBus regions must be 9188declared with the BufferAcc access type. 9189 9190Fixed a problem where the listing file output of control methods 9191no longer interleaved the actual AML code with the ASL source 9192code. 9193 9194 9195 9196 9197---------------------------------------- 9198Summary of changes for this label: 11_09_01 9199 92001) ACPI CA Core Subsystem: 9201 9202Implemented ACPI 2.0-defined support for writes to fields with a 9203Buffer, String, or Integer source operand that is smaller than the 9204target field. In these cases, the source operand is zero-extended 9205to fill the target field. 9206 9207Fixed a problem where a Field starting bit offset (within the 9208parent operation region) was calculated incorrectly if the 9209 9210alignment of the field differed from the access width. This 9211affected CreateWordField, CreateDwordField, CreateQwordField, and 9212possibly other fields that use the "AccessAny" keyword. 9213 9214Fixed a problem introduced in the 11_02_01 release where indirect 9215stores through method arguments did not operate correctly. 9216 92172) Linux: 9218 9219Implemented boot-time ACPI table parsing support 9220(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9221facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9222legacy BIOS interfaces (e.g. MPS) for the configuration of system 9223processors, memory, and interrupts during setup_arch(). Note that 9224this patch does not include the required architecture-specific 9225changes required to apply this information -- subsequent patches 9226will be posted for both IA32 and IA64 to achieve this. 9227 9228Added low-level sleep support for IA32 platforms, courtesy of Pat 9229Mochel. This allows IA32 systems to transition to/from various 9230sleeping states (e.g. S1, S3), although the lack of a centralized 9231driver model and power-manageable drivers will prevent its 9232(successful) use on most systems. 9233 9234Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9235submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9236tables" option, etc. 9237 9238Increased the default timeout for the EC driver from 1ms to 10ms 9239(1000 cycles of 10us) to try to address AE_TIME errors during EC 9240transactions. 9241 9242 ---------------------------------------- 9243Summary of changes for this label: 11_02_01 9244 92451) ACPI CA Core Subsystem: 9246 9247ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9248(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9249implemented. 9250 9251OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9252changes to support ACPI 2.0 Qword field access. Read/Write 9253PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9254accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9255the value parameter for the address space handler interface is now 9256an ACPI_INTEGER. OSL implementations of these interfaces must now 9257handle the case where the Width parameter is 64. 9258 9259Index Fields: Fixed a problem where unaligned bit assembly and 9260disassembly for IndexFields was not supported correctly. 9261 9262Index and Bank Fields: Nested Index and Bank Fields are now 9263supported. During field access, a check is performed to ensure 9264that the value written to an Index or Bank register is not out of 9265the range of the register. The Index (or Bank) register is 9266written before each access to the field data. Future support will 9267include allowing individual IndexFields to be wider than the 9268DataRegister width. 9269 9270Fields: Fixed a problem where the AML interpreter was incorrectly 9271attempting to write beyond the end of a Field/OpRegion. This was 9272a boundary case that occurred when a DWORD field was written to a 9273BYTE access OpRegion, forcing multiple writes and causing the 9274interpreter to write one datum too many. 9275 9276Fields: Fixed a problem with Field/OpRegion access where the 9277starting bit address of a field was incorrectly calculated if the 9278current access type was wider than a byte (WordAcc, DwordAcc, or 9279QwordAcc). 9280 9281Fields: Fixed a problem where forward references to individual 9282FieldUnits (individual Field names within a Field definition) were 9283not resolved during the AML table load. 9284 9285Fields: Fixed a problem where forward references from a Field 9286definition to the parent Operation Region definition were not 9287resolved during the AML table load. 9288 9289Fields: Duplicate FieldUnit names within a scope are now detected 9290during AML table load. 9291 9292Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9293returned an incorrect name for the root node. 9294 9295Code and Data Size: Code and Data optimizations have permitted new 9296feature development with an actual reduction in the library size. 9297Current core subsystem library sizes are shown below. These are 9298the code and data sizes for the acpica.lib produced by the 9299Microsoft Visual C++ 6.0 compiler, and these values do not include 9300any ACPI driver or OSPM code. The debug version of the code 9301includes the debug output trace mechanism and has a larger code 9302and data size. Note that these values will vary depending on the 9303efficiency of the compiler and the compiler options used during 9304generation. 9305 9306 Previous Release (10_18_01): 9307 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9308 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9309 9310 Current Release: 9311 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9312 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9313 9314 2) Linux: 9315 9316Improved /proc processor output (Pavel Machek) Re-added 9317MODULE_LICENSE("GPL") to all modules. 9318 9319 3) ASL Compiler version X2030: 9320 9321Duplicate FieldUnit names within a scope are now detected and 9322flagged as errors. 9323 9324 4) Documentation: 9325 9326Programmer Reference updated to reflect OSL and address space 9327handler interface changes described above. 9328 9329---------------------------------------- 9330Summary of changes for this label: 10_18_01 9331 9332ACPI CA Core Subsystem: 9333 9334Fixed a problem with the internal object reference count mechanism 9335that occasionally caused premature object deletion. This resolves 9336all of the outstanding problem reports where an object is deleted 9337in the middle of an interpreter evaluation. Although this problem 9338only showed up in rather obscure cases, the solution to the 9339problem involved an adjustment of all reference counts involving 9340objects attached to namespace nodes. 9341 9342Fixed a problem with Field support in the interpreter where 9343writing to an aligned field whose length is an exact multiple (2 9344or greater) of the field access granularity would cause an attempt 9345to write beyond the end of the field. 9346 9347The top level AML opcode execution functions within the 9348interpreter have been renamed with a more meaningful and 9349consistent naming convention. The modules exmonad.c and 9350exdyadic.c were eliminated. New modules are exoparg1.c, 9351exoparg2.c, exoparg3.c, and exoparg6.c. 9352 9353Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9354 9355Fixed a problem where the AML debugger was causing some internal 9356objects to not be deleted during subsystem termination. 9357 9358Fixed a problem with the external AcpiEvaluateObject interface 9359where the subsystem would fault if the named object to be 9360evaluated refered to a constant such as Zero, Ones, etc. 9361 9362Fixed a problem with IndexFields and BankFields where the 9363subsystem would fault if the index, data, or bank registers were 9364not defined in the same scope as the field itself. 9365 9366Added printf format string checking for compilers that support 9367this feature. Corrected more than 50 instances of issues with 9368format specifiers within invocations of ACPI_DEBUG_PRINT 9369throughout the core subsystem code. 9370 9371The ASL "Revision" operator now returns the ACPI support level 9372implemented in the core - the value "2" since the ACPI 2.0 support 9373is more than 50% implemented. 9374 9375Enhanced the output of the AML debugger "dump namespace" command 9376to output in a more human-readable form. 9377 9378Current core subsystem library code sizes are shown below. These 9379 9380are the code and data sizes for the acpica.lib produced by the 9381Microsoft Visual C++ 6.0 compiler, and these values do not include 9382any ACPI driver or OSPM code. The debug version of the code 9383includes the full debug trace mechanism -- leading to a much 9384 9385larger code and data size. Note that these values will vary 9386depending on the efficiency of the compiler and the compiler 9387options used during generation. 9388 9389 Previous Label (09_20_01): 9390 Non-Debug Version: 65K Code, 5K Data, 70K Total 9391 Debug Version: 138K Code, 58K Data, 196K Total 9392 9393 This Label: 9394 9395 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9396 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9397 9398Linux: 9399 9400Implemented a "Bad BIOS Blacklist" to track machines that have 9401known ASL/AML problems. 9402 9403Enhanced the /proc interface for the thermal zone driver and added 9404support for _HOT (the critical suspend trip point). The 'info' 9405file now includes threshold/policy information, and allows setting 9406of _SCP (cooling preference) and _TZP (polling frequency) values 9407to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9408frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9409preference to the passive/quiet mode (if supported by the ASL). 9410 9411Implemented a workaround for a gcc bug that resuted in an OOPs 9412when loading the control method battery driver. 9413 9414 ---------------------------------------- 9415Summary of changes for this label: 09_20_01 9416 9417 ACPI CA Core Subsystem: 9418 9419The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9420modified to allow individual GPE levels to be flagged as wake- 9421enabled (i.e., these GPEs are to remain enabled when the platform 9422sleeps.) 9423 9424The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9425support wake-enabled GPEs. This means that upon entering the 9426sleep state, all GPEs that are not wake-enabled are disabled. 9427When leaving the sleep state, these GPEs are reenabled. 9428 9429A local double-precision divide/modulo module has been added to 9430enhance portability to OS kernels where a 64-bit math library is 9431not available. The new module is "utmath.c". 9432 9433Several optimizations have been made to reduce the use of CPU 9434stack. Originally over 2K, the maximum stack usage is now below 94352K at 1860 bytes (1.82k) 9436 9437Fixed a problem with the AcpiGetFirmwareTable interface where the 9438root table pointer was not mapped into a logical address properly. 9439 9440Fixed a problem where a NULL pointer was being dereferenced in the 9441interpreter code for the ASL Notify operator. 9442 9443Fixed a problem where the use of the ASL Revision operator 9444returned an error. This operator now returns the current version 9445of the ACPI CA core subsystem. 9446 9447Fixed a problem where objects passed as control method parameters 9448to AcpiEvaluateObject were always deleted at method termination. 9449However, these objects may end up being stored into the namespace 9450by the called method. The object reference count mechanism was 9451applied to these objects instead of a force delete. 9452 9453Fixed a problem where static strings or buffers (contained in the 9454AML code) that are declared as package elements within the ASL 9455code could cause a fault because the interpreter would attempt to 9456delete them. These objects are now marked with the "static 9457object" flag to prevent any attempt to delete them. 9458 9459Implemented an interpreter optimization to use operands directly 9460from the state object instead of extracting the operands to local 9461variables. This reduces stack use and code size, and improves 9462performance. 9463 9464The module exxface.c was eliminated as it was an unnecessary extra 9465layer of code. 9466 9467Current core subsystem library code sizes are shown below. These 9468are the code and data sizes for the acpica.lib produced by the 9469Microsoft Visual C++ 6.0 compiler, and these values do not include 9470any ACPI driver or OSPM code. The debug version of the code 9471includes the full debug trace mechanism -- leading to a much 9472larger code and data size. Note that these values will vary 9473depending on the efficiency of the compiler and the compiler 9474options used during generation. 9475 9476 Non-Debug Version: 65K Code, 5K Data, 70K Total 9477(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9478Total (Previously 195K) 9479 9480Linux: 9481 9482Support for ACPI 2.0 64-bit integers has been added. All ACPI 9483Integer objects are now 64 bits wide 9484 9485All Acpi data types and structures are now in lower case. Only 9486Acpi macros are upper case for differentiation. 9487 9488 Documentation: 9489 9490Changes to the external interfaces as described above. 9491 9492 ---------------------------------------- 9493Summary of changes for this label: 08_31_01 9494 9495 ACPI CA Core Subsystem: 9496 9497A bug with interpreter implementation of the ASL Divide operator 9498was found and fixed. The implicit function return value (not the 9499explicit store operands) was returning the remainder instead of 9500the quotient. This was a longstanding bug and it fixes several 9501known outstanding issues on various platforms. 9502 9503The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9504been further optimized for size. There are 700 invocations of the 9505DEBUG_PRINT macro alone, so each optimization reduces the size of 9506the debug version of the subsystem significantly. 9507 9508A stack trace mechanism has been implemented. The maximum stack 9509usage is about 2K on 32-bit platforms. The debugger command "stat 9510stack" will display the current maximum stack usage. 9511 9512All public symbols and global variables within the subsystem are 9513now prefixed with the string "Acpi". This keeps all of the 9514symbols grouped together in a kernel map, and avoids conflicts 9515with other kernel subsystems. 9516 9517Most of the internal fixed lookup tables have been moved into the 9518code segment via the const operator. 9519 9520Several enhancements have been made to the interpreter to both 9521reduce the code size and improve performance. 9522 9523Current core subsystem library code sizes are shown below. These 9524are the code and data sizes for the acpica.lib produced by the 9525Microsoft Visual C++ 6.0 compiler, and these values do not include 9526any ACPI driver or OSPM code. The debug version of the code 9527includes the full debug trace mechanism which contains over 700 9528invocations of the DEBUG_PRINT macro, 500 function entry macro 9529invocations, and over 900 function exit macro invocations -- 9530leading to a much larger code and data size. Note that these 9531values will vary depending on the efficiency of the compiler and 9532the compiler options used during generation. 9533 9534 Non-Debug Version: 64K Code, 5K Data, 69K Total 9535Debug Version: 137K Code, 58K Data, 195K Total 9536 9537 Linux: 9538 9539Implemented wbinvd() macro, pending a kernel-wide definition. 9540 9541Fixed /proc/acpi/event to handle poll() and short reads. 9542 9543 ASL Compiler, version X2026: 9544 9545Fixed a problem introduced in the previous label where the AML 9546 9547code emitted for package objects produced packages with zero 9548length. 9549 9550 ---------------------------------------- 9551Summary of changes for this label: 08_16_01 9552 9553ACPI CA Core Subsystem: 9554 9555The following ACPI 2.0 ASL operators have been implemented in the 9556AML interpreter (These are already supported by the Intel ASL 9557compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9558ToBuffer. Support for 64-bit AML constants is implemented in the 9559AML parser, debugger, and disassembler. 9560 9561The internal memory tracking mechanism (leak detection code) has 9562been upgraded to reduce the memory overhead (a separate tracking 9563block is no longer allocated for each memory allocation), and now 9564supports all of the internal object caches. 9565 9566The data structures and code for the internal object caches have 9567been coelesced and optimized so that there is a single cache and 9568memory list data structure and a single group of functions that 9569implement generic cache management. This has reduced the code 9570size in both the debug and release versions of the subsystem. 9571 9572The DEBUG_PRINT macro(s) have been optimized for size and replaced 9573by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9574different, because it generates a single call to an internal 9575function. This results in a savings of about 90 bytes per 9576invocation, resulting in an overall code and data savings of about 957716% in the debug version of the subsystem. 9578 9579 Linux: 9580 9581Fixed C3 disk corruption problems and re-enabled C3 on supporting 9582machines. 9583 9584Integrated low-level sleep code by Patrick Mochel. 9585 9586Further tweaked source code Linuxization. 9587 9588Other minor fixes. 9589 9590 ASL Compiler: 9591 9592Support for ACPI 2.0 variable length packages is fixed/completed. 9593 9594Fixed a problem where the optional length parameter for the ACPI 95952.0 ToString operator. 9596 9597Fixed multiple extraneous error messages when a syntax error is 9598detected within the declaration line of a control method. 9599 9600 ---------------------------------------- 9601Summary of changes for this label: 07_17_01 9602 9603ACPI CA Core Subsystem: 9604 9605Added a new interface named AcpiGetFirmwareTable to obtain any 9606ACPI table via the ACPI signature. The interface can be called at 9607any time during kernel initialization, even before the kernel 9608virtual memory manager is initialized and paging is enabled. This 9609allows kernel subsystems to obtain ACPI tables very early, even 9610before the ACPI CA subsystem is initialized. 9611 9612Fixed a problem where Fields defined with the AnyAcc attribute 9613could be resolved to the incorrect address under the following 9614conditions: 1) the field width is larger than 8 bits and 2) the 9615parent operation region is not defined on a DWORD boundary. 9616 9617Fixed a problem where the interpreter is not being locked during 9618namespace initialization (during execution of the _INI control 9619methods), causing an error when an attempt is made to release it 9620later. 9621 9622ACPI 2.0 support in the AML Interpreter has begun and will be 9623ongoing throughout the rest of this year. In this label, The Mod 9624operator is implemented. 9625 9626Added a new data type to contain full PCI addresses named 9627ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9628and Function values. 9629 9630 Linux: 9631 9632Enhanced the Linux version of the source code to change most 9633capitalized ACPI type names to lowercase. For example, all 9634instances of ACPI_STATUS are changed to acpi_status. This will 9635result in a large diff, but the change is strictly cosmetic and 9636aligns the CA code closer to the Linux coding standard. 9637 9638OSL Interfaces: 9639 9640The interfaces to the PCI configuration space have been changed to 9641add the PCI Segment number and to split the single 32-bit combined 9642DeviceFunction field into two 16-bit fields. This was 9643accomplished by moving the four values that define an address in 9644PCI configuration space (segment, bus, device, and function) to 9645the new ACPI_PCI_ID structure. 9646 9647The changes to the PCI configuration space interfaces led to a 9648reexamination of the complete set of address space access 9649interfaces for PCI, I/O, and Memory. The previously existing 18 9650interfaces have proven difficult to maintain (any small change 9651must be propagated across at least 6 interfaces) and do not easily 9652allow for future expansion to 64 bits if necessary. Also, on some 9653systems, it would not be appropriate to demultiplex the access 9654width (8, 16, 32,or 64) before calling the OSL if the 9655corresponding native OS interfaces contain a similar access width 9656parameter. For these reasons, the 18 address space interfaces 9657have been replaced by these 6 new ones: 9658 9659AcpiOsReadPciConfiguration 9660AcpiOsWritePciConfiguration 9661AcpiOsReadMemory 9662AcpiOsWriteMemory 9663AcpiOsReadPort 9664AcpiOsWritePort 9665 9666Added a new interface named AcpiOsGetRootPointer to allow the OSL 9667to perform the platform and/or OS-specific actions necessary to 9668obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9669interface will simply call down to the CA core to perform the low- 9670memory search for the table. On IA-64, the RSDP is obtained from 9671EFI. Migrating this interface to the OSL allows the CA core to 9672 9673remain OS and platform independent. 9674 9675Added a new interface named AcpiOsSignal to provide a generic 9676"function code and pointer" interface for various miscellaneous 9677signals and notifications that must be made to the host OS. The 9678first such signals are intended to support the ASL Fatal and 9679Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9680interface has been obsoleted. 9681 9682The definition of the AcpiFormatException interface has been 9683changed to simplify its use. The caller no longer must supply a 9684buffer to the call; A pointer to a const string is now returned 9685directly. This allows the call to be easily used in printf 9686statements, etc. since the caller does not have to manage a local 9687buffer. 9688 9689 9690 ASL Compiler, Version X2025: 9691 9692The ACPI 2.0 Switch/Case/Default operators have been implemented 9693and are fully functional. They will work with all ACPI 1.0 9694interpreters, since the operators are simply translated to If/Else 9695pairs. 9696 9697The ACPI 2.0 ElseIf operator is implemented and will also work 9698with 1.0 interpreters, for the same reason. 9699 9700Implemented support for ACPI 2.0 variable-length packages. These 9701packages have a separate opcode, and their size is determined by 9702the interpreter at run-time. 9703 9704Documentation The ACPI CA Programmer Reference has been updated to 9705reflect the new interfaces and changes to existing interfaces. 9706 9707 ------------------------------------------ 9708Summary of changes for this label: 06_15_01 9709 9710 ACPI CA Core Subsystem: 9711 9712Fixed a problem where a DWORD-accessed field within a Buffer 9713object would get its byte address inadvertently rounded down to 9714the nearest DWORD. Buffers are always Byte-accessible. 9715 9716 ASL Compiler, version X2024: 9717 9718Fixed a problem where the Switch() operator would either fault or 9719hang the compiler. Note however, that the AML code for this ACPI 97202.0 operator is not yet implemented. 9721 9722Compiler uses the new AcpiOsGetTimer interface to obtain compile 9723timings. 9724 9725Implementation of the CreateField operator automatically converts 9726a reference to a named field within a resource descriptor from a 9727byte offset to a bit offset if required. 9728 9729Added some missing named fields from the resource descriptor 9730support. These are the names that are automatically created by the 9731compiler to reference fields within a descriptor. They are only 9732valid at compile time and are not passed through to the AML 9733interpreter. 9734 9735Resource descriptor named fields are now typed as Integers and 9736subject to compile-time typechecking when used in expressions. 9737 9738 ------------------------------------------ 9739Summary of changes for this label: 05_18_01 9740 9741 ACPI CA Core Subsystem: 9742 9743Fixed a couple of problems in the Field support code where bits 9744from adjacent fields could be returned along with the proper field 9745bits. Restructured the field support code to improve performance, 9746readability and maintainability. 9747 9748New DEBUG_PRINTP macro automatically inserts the procedure name 9749into the output, saving hundreds of copies of procedure name 9750strings within the source, shrinking the memory footprint of the 9751debug version of the core subsystem. 9752 9753 Source Code Structure: 9754 9755The source code directory tree was restructured to reflect the 9756current organization of the component architecture. Some files 9757and directories have been moved and/or renamed. 9758 9759 Linux: 9760 9761Fixed leaking kacpidpc processes. 9762 9763Fixed queueing event data even when /proc/acpi/event is not 9764opened. 9765 9766 ASL Compiler, version X2020: 9767 9768Memory allocation performance enhancement - over 24X compile time 9769improvement on large ASL files. Parse nodes and namestring 9770buffers are now allocated from a large internal compiler buffer. 9771 9772The temporary .SRC file is deleted unless the "-s" option is 9773specified 9774 9775The "-d" debug output option now sends all output to the .DBG file 9776instead of the console. 9777 9778"External" second parameter is now optional 9779 9780"ElseIf" syntax now properly allows the predicate 9781 9782Last operand to "Load" now recognized as a Target operand 9783 9784Debug object can now be used anywhere as a normal object. 9785 9786ResourceTemplate now returns an object of type BUFFER 9787 9788EISAID now returns an object of type INTEGER 9789 9790"Index" now works with a STRING operand 9791 9792"LoadTable" now accepts optional parameters 9793 9794"ToString" length parameter is now optional 9795 9796"Interrupt (ResourceType," parse error fixed. 9797 9798"Register" with a user-defined region space parse error fixed 9799 9800Escaped backslash at the end of a string ("\\") scan/parse error 9801fixed 9802 9803"Revision" is now an object of type INTEGER. 9804 9805 9806 9807------------------------------------------ 9808Summary of changes for this label: 05_02_01 9809 9810Linux: 9811 9812/proc/acpi/event now blocks properly. 9813 9814Removed /proc/sys/acpi. You can still dump your DSDT from 9815/proc/acpi/dsdt. 9816 9817 ACPI CA Core Subsystem: 9818 9819Fixed a problem introduced in the previous label where some of the 9820"small" resource descriptor types were not recognized. 9821 9822Improved error messages for the case where an ASL Field is outside 9823the range of the parent operation region. 9824 9825 ASL Compiler, version X2018: 9826 9827 9828Added error detection for ASL Fields that extend beyond the length 9829of the parent operation region (only if the length of the region 9830is known at compile time.) This includes fields that have a 9831minimum access width that is smaller than the parent region, and 9832individual field units that are partially or entirely beyond the 9833extent of the parent. 9834 9835 9836 9837------------------------------------------ 9838Summary of changes for this label: 04_27_01 9839 9840 ACPI CA Core Subsystem: 9841 9842Fixed a problem where the namespace mutex could be released at the 9843wrong time during execution of AcpiRemoveAddressSpaceHandler. 9844 9845Added optional thread ID output for debug traces, to simplify 9846debugging of multiple threads. Added context switch notification 9847when the debug code realizes that a different thread is now 9848executing ACPI code. 9849 9850Some additional external data types have been prefixed with the 9851string "ACPI_" for consistency. This may effect existing code. 9852The data types affected are the external callback typedefs - e.g., 9853 9854WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9855 9856 Linux: 9857 9858Fixed an issue with the OSL semaphore implementation where a 9859thread was waking up with an error from receiving a SIGCHLD 9860signal. 9861 9862Linux version of ACPI CA now uses the system C library for string 9863manipulation routines instead of a local implementation. 9864 9865Cleaned up comments and removed TBDs. 9866 9867 ASL Compiler, version X2017: 9868 9869Enhanced error detection and reporting for all file I/O 9870operations. 9871 9872 Documentation: 9873 9874Programmer Reference updated to version 1.06. 9875 9876 9877 9878------------------------------------------ 9879Summary of changes for this label: 04_13_01 9880 9881 ACPI CA Core Subsystem: 9882 9883Restructured support for BufferFields and RegionFields. 9884BankFields support is now fully operational. All known 32-bit 9885limitations on field sizes have been removed. Both BufferFields 9886and (Operation) RegionFields are now supported by the same field 9887management code. 9888 9889Resource support now supports QWORD address and IO resources. The 989016/32/64 bit address structures and the Extended IRQ structure 9891have been changed to properly handle Source Resource strings. 9892 9893A ThreadId of -1 is now used to indicate a "mutex not acquired" 9894condition internally and must never be returned by AcpiOsThreadId. 9895This reserved value was changed from 0 since Unix systems allow a 9896thread ID of 0. 9897 9898Linux: 9899 9900Driver code reorganized to enhance portability 9901 9902Added a kernel configuration option to control ACPI_DEBUG 9903 9904Fixed the EC driver to honor _GLK. 9905 9906ASL Compiler, version X2016: 9907 9908Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9909address space was set to 0, not 0x7f as it should be. 9910 9911 ------------------------------------------ 9912Summary of changes for this label: 03_13_01 9913 9914 ACPI CA Core Subsystem: 9915 9916During ACPI initialization, the _SB_._INI method is now run if 9917present. 9918 9919Notify handler fix - notifies are deferred until the parent method 9920completes execution. This fixes the "mutex already acquired" 9921issue seen occasionally. 9922 9923Part of the "implicit conversion" rules in ACPI 2.0 have been 9924found to cause compatibility problems with existing ASL/AML. The 9925convert "result-to-target-type" implementation has been removed 9926for stores to method Args and Locals. Source operand conversion 9927is still fully implemented. Possible changes to ACPI 2.0 9928specification pending. 9929 9930Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9931length. 9932 9933Fix for compiler warnings for 64-bit compiles. 9934 9935 Linux: 9936 9937/proc output aligned for easier parsing. 9938 9939Release-version compile problem fixed. 9940 9941New kernel configuration options documented in Configure.help. 9942 9943IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9944context" message. 9945 9946 OSPM: 9947 9948Power resource driver integrated with bus manager. 9949 9950Fixed kernel fault during active cooling for thermal zones. 9951 9952Source Code: 9953 9954The source code tree has been restructured. 9955 9956 9957 9958------------------------------------------ 9959Summary of changes for this label: 03_02_01 9960 9961 Linux OS Services Layer (OSL): 9962 9963Major revision of all Linux-specific code. 9964 9965Modularized all ACPI-specific drivers. 9966 9967Added new thermal zone and power resource drivers. 9968 9969Revamped /proc interface (new functionality is under /proc/acpi). 9970 9971New kernel configuration options. 9972 9973 Linux known issues: 9974 9975New kernel configuration options not documented in Configure.help 9976yet. 9977 9978 9979Module dependencies not currently implemented. If used, they 9980should be loaded in this order: busmgr, power, ec, system, 9981processor, battery, ac_adapter, button, thermal. 9982 9983Modules will not load if CONFIG_MODVERSION is set. 9984 9985IBM 600E - entering S5 may reboot instead of shutting down. 9986 9987IBM 600E - Sleep button may generate "Invalid <NULL> context" 9988message. 9989 9990Some systems may fail with "execution mutex already acquired" 9991message. 9992 9993 ACPI CA Core Subsystem: 9994 9995Added a new OSL Interface, AcpiOsGetThreadId. This was required 9996for the deadlock detection code. Defined to return a non-zero, 32- 9997bit thread ID for the currently executing thread. May be a non- 9998zero constant integer on single-thread systems. 9999 10000Implemented deadlock detection for internal subsystem mutexes. We 10001may add conditional compilation for this code (debug only) later. 10002 10003ASL/AML Mutex object semantics are now fully supported. This 10004includes multiple acquires/releases by owner and support for the 10005 10006Mutex SyncLevel parameter. 10007 10008A new "Force Release" mechanism automatically frees all ASL 10009Mutexes that have been acquired but not released when a thread 10010exits the interpreter. This forces conformance to the ACPI spec 10011("All mutexes must be released when an invocation exits") and 10012prevents deadlocked ASL threads. This mechanism can be expanded 10013(later) to monitor other resource acquisitions if OEM ASL code 10014continues to misbehave (which it will). 10015 10016Several new ACPI exception codes have been added for the Mutex 10017support. 10018 10019Recursive method calls are now allowed and supported (the ACPI 10020spec does in fact allow recursive method calls.) The number of 10021recursive calls is subject to the restrictions imposed by the 10022SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10023parameter. 10024 10025Implemented support for the SyncLevel parameter for control 10026methods (ACPI 2.0 feature) 10027 10028Fixed a deadlock problem when multiple threads attempted to use 10029the interpreter. 10030 10031Fixed a problem where the string length of a String package 10032element was not always set in a package returned from 10033AcpiEvaluateObject. 10034 10035Fixed a problem where the length of a String package element was 10036not always included in the length of the overall package returned 10037from AcpiEvaluateObject. 10038 10039Added external interfaces (Acpi*) to the ACPI debug memory 10040manager. This manager keeps a list of all outstanding 10041allocations, and can therefore detect memory leaks and attempts to 10042free memory blocks more than once. Useful for code such as the 10043power manager, etc. May not be appropriate for device drivers. 10044Performance with the debug code enabled is slow. 10045 10046The ACPI Global Lock is now an optional hardware element. 10047 10048 ASL Compiler Version X2015: 10049 10050Integrated changes to allow the compiler to be generated on 10051multiple platforms. 10052 10053Linux makefile added to generate the compiler on Linux 10054 10055 Source Code: 10056 10057All platform-specific headers have been moved to their own 10058subdirectory, Include/Platform. 10059 10060New source file added, Interpreter/ammutex.c 10061 10062New header file, Include/acstruct.h 10063 10064 Documentation: 10065 10066The programmer reference has been updated for the following new 10067interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10068 10069 ------------------------------------------ 10070Summary of changes for this label: 02_08_01 10071 10072Core ACPI CA Subsystem: Fixed a problem where an error was 10073incorrectly returned if the return resource buffer was larger than 10074the actual data (in the resource interfaces). 10075 10076References to named objects within packages are resolved to the 10077 10078full pathname string before packages are returned directly (via 10079the AcpiEvaluateObject interface) or indirectly via the resource 10080interfaces. 10081 10082Linux OS Services Layer (OSL): 10083 10084Improved /proc battery interface. 10085 10086 10087Added C-state debugging output and other miscellaneous fixes. 10088 10089ASL Compiler Version X2014: 10090 10091All defined method arguments can now be used as local variables, 10092including the ones that are not actually passed in as parameters. 10093The compiler tracks initialization of the arguments and issues an 10094exception if they are used without prior assignment (just like 10095locals). 10096 10097The -o option now specifies a filename prefix that is used for all 10098output files, including the AML output file. Otherwise, the 10099default behavior is as follows: 1) the AML goes to the file 10100specified in the DSDT. 2) all other output files use the input 10101source filename as the base. 10102 10103 ------------------------------------------ 10104Summary of changes for this label: 01_25_01 10105 10106Core ACPI CA Subsystem: Restructured the implementation of object 10107store support within the interpreter. This includes support for 10108the Store operator as well as any ASL operators that include a 10109target operand. 10110 10111Partially implemented support for Implicit Result-to-Target 10112conversion. This is when a result object is converted on the fly 10113to the type of an existing target object. Completion of this 10114support is pending further analysis of the ACPI specification 10115concerning this matter. 10116 10117CPU-specific code has been removed from the subsystem (hardware 10118directory). 10119 10120New Power Management Timer functions added 10121 10122Linux OS Services Layer (OSL): Moved system state transition code 10123to the core, fixed it, and modified Linux OSL accordingly. 10124 10125Fixed C2 and C3 latency calculations. 10126 10127 10128We no longer use the compilation date for the version message on 10129initialization, but retrieve the version from AcpiGetSystemInfo(). 10130 10131Incorporated for fix Sony VAIO machines. 10132 10133Documentation: The Programmer Reference has been updated and 10134reformatted. 10135 10136 10137ASL Compiler: Version X2013: Fixed a problem where the line 10138numbering and error reporting could get out of sync in the 10139presence of multiple include files. 10140 10141 ------------------------------------------ 10142Summary of changes for this label: 01_15_01 10143 10144Core ACPI CA Subsystem: 10145 10146Implemented support for type conversions in the execution of the 10147ASL Concatenate operator (The second operand is converted to 10148match the type of the first operand before concatenation.) 10149 10150Support for implicit source operand conversion is partially 10151implemented. The ASL source operand types Integer, Buffer, and 10152String are freely interchangeable for most ASL operators and are 10153converted by the interpreter on the fly as required. Implicit 10154Target operand conversion (where the result is converted to the 10155target type before storing) is not yet implemented. 10156 10157Support for 32-bit and 64-bit BCD integers is implemented. 10158 10159Problem fixed where a field read on an aligned field could cause a 10160read past the end of the field. 10161 10162New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10163does not return a value, but the caller expects one. (The ASL 10164compiler flags this as a warning.) 10165 10166ASL Compiler: 10167 10168Version X2011: 101691. Static typechecking of all operands is implemented. This 10170prevents the use of invalid objects (such as using a Package where 10171an Integer is required) at compile time instead of at interpreter 10172run-time. 101732. The ASL source line is printed with ALL errors and warnings. 101743. Bug fix for source EOF without final linefeed. 101754. Debug option is split into a parse trace and a namespace trace. 101765. Namespace output option (-n) includes initial values for 10177integers and strings. 101786. Parse-only option added for quick syntax checking. 101797. Compiler checks for duplicate ACPI name declarations 10180 10181Version X2012: 101821. Relaxed typechecking to allow interchangeability between 10183strings, integers, and buffers. These types are now converted by 10184the interpreter at runtime. 101852. Compiler reports time taken by each internal subsystem in the 10186debug output file. 10187 10188 10189 ------------------------------------------ 10190Summary of changes for this label: 12_14_00 10191 10192ASL Compiler: 10193 10194This is the first official release of the compiler. Since the 10195compiler requires elements of the Core Subsystem, this label 10196synchronizes everything. 10197 10198------------------------------------------ 10199Summary of changes for this label: 12_08_00 10200 10201 10202Fixed a problem where named references within the ASL definition 10203of both OperationRegions and CreateXXXFields did not work 10204properly. The symptom was an AE_AML_OPERAND_TYPE during 10205initialization of the region/field. This is similar (but not 10206related internally) to the problem that was fixed in the last 10207label. 10208 10209Implemented both 32-bit and 64-bit support for the BCD ASL 10210functions ToBCD and FromBCD. 10211 10212Updated all legal headers to include "2000" in the copyright 10213years. 10214 10215 ------------------------------------------ 10216Summary of changes for this label: 12_01_00 10217 10218Fixed a problem where method invocations within the ASL definition 10219of both OperationRegions and CreateXXXFields did not work 10220properly. The symptom was an AE_AML_OPERAND_TYPE during 10221initialization of the region/field: 10222 10223 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10224[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10225(0x3005) 10226 10227Fixed a problem where operators with more than one nested 10228subexpression would fail. The symptoms were varied, by mostly 10229AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10230problem that has gone unnoticed until now. 10231 10232 Subtract (Add (1,2), Multiply (3,4)) 10233 10234Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10235previous build (The prefix part of a relative path was handled 10236incorrectly). 10237 10238Fixed a problem where Operation Region initialization failed if 10239the operation region name was a "namepath" instead of a simple 10240"nameseg". Symptom was an AE_NO_OPERAND error. 10241 10242Fixed a problem where an assignment to a local variable via the 10243indirect RefOf mechanism only worked for the first such 10244assignment. Subsequent assignments were ignored. 10245 10246 ------------------------------------------ 10247Summary of changes for this label: 11_15_00 10248 10249ACPI 2.0 table support with backwards support for ACPI 1.0 and the 102500.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10251the AML interpreter does NOT have support for the new 2.0 ASL 10252grammar terms at this time. 10253 10254All ACPI hardware access is via the GAS structures in the ACPI 2.0 10255FADT. 10256 10257All physical memory addresses across all platforms are now 64 bits 10258wide. Logical address width remains dependent on the platform 10259(i.e., "void *"). 10260 10261AcpiOsMapMemory interface changed to a 64-bit physical address. 10262 10263The AML interpreter integer size is now 64 bits, as per the ACPI 102642.0 specification. 10265 10266For backwards compatibility with ACPI 1.0, ACPI tables with a 10267revision number less than 2 use 32-bit integers only. 10268 10269Fixed a problem where the evaluation of OpRegion operands did not 10270always resolve them to numbers properly. 10271 10272------------------------------------------ 10273Summary of changes for this label: 10_20_00 10274 10275Fix for CBN_._STA issue. This fix will allow correct access to 10276CBN_ OpRegions when the _STA returns 0x8. 10277 10278Support to convert ACPI constants (Ones, Zeros, One) to actual 10279values before a package object is returned 10280 10281Fix for method call as predicate to if/while construct causing 10282incorrect if/while behavior 10283 10284Fix for Else block package lengths sometimes calculated wrong (if 10285block > 63 bytes) 10286 10287Fix for Processor object length field, was always zero 10288 10289Table load abort if FACP sanity check fails 10290 10291Fix for problem with Scope(name) if name already exists 10292 10293Warning emitted if a named object referenced cannot be found 10294(resolved) during method execution. 10295 10296 10297 10298 10299 10300------------------------------------------ 10301Summary of changes for this label: 9_29_00 10302 10303New table initialization interfaces: AcpiInitializeSubsystem no 10304longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10305necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10306>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10307AcpiLoadTables 10308 10309Note: These interface changes require changes to all existing OSDs 10310 10311The PCI_Config default address space handler is always installed 10312at the root namespace object. 10313 10314------------------------------------------- 10315Summary of changes for this label: 09_15_00 10316 10317The new initialization architecture is implemented. New 10318interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10319AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10320 10321(Namespace is automatically loaded when a table is loaded) 10322 10323The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1032452 bytes to 32 bytes. There is usually one of these for every 10325namespace object, so the memory savings is significant. 10326 10327Implemented just-in-time evaluation of the CreateField operators. 10328 10329Bug fixes for IA-64 support have been integrated. 10330 10331Additional code review comments have been implemented 10332 10333The so-called "third pass parse" has been replaced by a final walk 10334through the namespace to initialize all operation regions (address 10335spaces) and fields that have not yet been initialized during the 10336execution of the various _INI and REG methods. 10337 10338New file - namespace/nsinit.c 10339 10340------------------------------------------- 10341Summary of changes for this label: 09_01_00 10342 10343Namespace manager data structures have been reworked to change the 10344primary object from a table to a single object. This has 10345resulted in dynamic memory savings of 3X within the namespace and 103462X overall in the ACPI CA subsystem. 10347 10348Fixed problem where the call to AcpiEvFindPciRootBuses was 10349inadvertently left commented out. 10350 10351Reduced the warning count when generating the source with the GCC 10352compiler. 10353 10354Revision numbers added to each module header showing the 10355SourceSafe version of the file. Please refer to this version 10356number when giving us feedback or comments on individual modules. 10357 10358The main object types within the subsystem have been renamed to 10359clarify their purpose: 10360 10361ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10362ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10363ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10364 10365NOTE: no changes to the initialization sequence are included in 10366this label. 10367 10368------------------------------------------- 10369Summary of changes for this label: 08_23_00 10370 10371Fixed problem where TerminateControlMethod was being called 10372multiple times per method 10373 10374Fixed debugger problem where single stepping caused a semaphore to 10375be oversignalled 10376 10377Improved performance through additional parse object caching - 10378added ACPI_EXTENDED_OP type 10379 10380------------------------------------------- 10381Summary of changes for this label: 08_10_00 10382 10383Parser/Interpreter integration: Eliminated the creation of 10384complete parse trees for ACPI tables and control methods. 10385Instead, parse subtrees are created and then deleted as soon as 10386they are processed (Either entered into the namespace or executed 10387by the interpreter). This reduces the use of dynamic kernel 10388memory significantly. (about 10X) 10389 10390Exception codes broken into classes and renumbered. Be sure to 10391recompile all code that includes acexcep.h. Hopefully we won't 10392have to renumber the codes again now that they are split into 10393classes (environment, programmer, AML code, ACPI table, and 10394internal). 10395 10396Fixed some additional alignment issues in the Resource Manager 10397subcomponent 10398 10399Implemented semaphore tracking in the AcpiExec utility, and fixed 10400several places where mutexes/semaphores were being unlocked 10401without a corresponding lock operation. There are no known 10402semaphore or mutex "leaks" at this time. 10403 10404Fixed the case where an ASL Return operator is used to return an 10405unnamed package. 10406 10407------------------------------------------- 10408Summary of changes for this label: 07_28_00 10409 10410Fixed a problem with the way addresses were calculated in 10411AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10412manifested itself when a Field was created with WordAccess or 10413DwordAccess, but the field unit defined within the Field was less 10414 10415than a Word or Dword. 10416 10417Fixed a problem in AmlDumpOperands() module's loop to pull 10418operands off of the operand stack to display information. The 10419problem manifested itself as a TLB error on 64-bit systems when 10420accessing an operand stack with two or more operands. 10421 10422Fixed a problem with the PCI configuration space handlers where 10423context was getting confused between accesses. This required a 10424change to the generic address space handler and address space 10425setup definitions. Handlers now get both a global handler context 10426(this is the one passed in by the user when executing 10427AcpiInstallAddressSpaceHandler() and a specific region context 10428that is unique to each region (For example, the _ADR, _SEG and 10429_BBN values associated with a specific region). The generic 10430function definitions have changed to the following: 10431 10432typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10433UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10434*HandlerContext, // This used to be void *Context void 10435*RegionContext); // This is an additional parameter 10436 10437typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10438RegionHandle, UINT32 Function, void *HandlerContext, void 10439**RegionContext); // This used to be **ReturnContext 10440 10441------------------------------------------- 10442Summary of changes for this label: 07_21_00 10443 10444Major file consolidation and rename. All files within the 10445interpreter have been renamed as well as most header files. This 10446was done to prevent collisions with existing files in the host 10447OSs -- filenames such as "config.h" and "global.h" seem to be 10448quite common. The VC project files have been updated. All 10449makefiles will require modification. 10450 10451The parser/interpreter integration continues in Phase 5 with the 10452implementation of a complete 2-pass parse (the AML is parsed 10453twice) for each table; This avoids the construction of a huge 10454parse tree and therefore reduces the amount of dynamic memory 10455required by the subsystem. Greater use of the parse object cache 10456means that performance is unaffected. 10457 10458Many comments from the two code reviews have been rolled in. 10459 10460The 64-bit alignment support is complete. 10461 10462------------------------------------------- 10463Summary of changes for this label: 06_30_00 10464 10465With a nod and a tip of the hat to the technology of yesteryear, 10466we've added support in the source code for 80 column output 10467devices. The code is now mostly constrained to 80 columns or 10468less to support environments and editors that 1) cannot display 10469or print more than 80 characters on a single line, and 2) cannot 10470disable line wrapping. 10471 10472A major restructuring of the namespace data structure has been 10473completed. The result is 1) cleaner and more 10474understandable/maintainable code, and 2) a significant reduction 10475in the dynamic memory requirement for each named ACPI object 10476(almost half). 10477 10478------------------------------------------- 10479Summary of changes for this label: 06_23_00 10480 10481Linux support has been added. In order to obtain approval to get 10482the ACPI CA subsystem into the Linux kernel, we've had to make 10483quite a few changes to the base subsystem that will affect all 10484users (all the changes are generic and OS- independent). The 10485effects of these global changes have been somewhat far reaching. 10486Files have been merged and/or renamed and interfaces have been 10487renamed. The major changes are described below. 10488 10489Osd* interfaces renamed to AcpiOs* to eliminate namespace 10490pollution/confusion within our target kernels. All OSD 10491interfaces must be modified to match the new naming convention. 10492 10493Files merged across the subsystem. A number of the smaller source 10494and header files have been merged to reduce the file count and 10495increase the density of the existing files. There are too many 10496to list here. In general, makefiles that call out individual 10497files will require rebuilding. 10498 10499Interpreter files renamed. All interpreter files now have the 10500prefix am* instead of ie* and is*. 10501 10502Header files renamed: The acapi.h file is now acpixf.h. The 10503acpiosd.h file is now acpiosxf.h. We are removing references to 10504the acronym "API" since it is somewhat windowsy. The new name is 10505"external interface" or xface or xf in the filenames.j 10506 10507 10508All manifest constants have been forced to upper case (some were 10509mixed case.) Also, the string "ACPI_" has been prepended to many 10510(not all) of the constants, typedefs, and structs. 10511 10512The globals "DebugLevel" and "DebugLayer" have been renamed 10513"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10514 10515All other globals within the subsystem are now prefixed with 10516"AcpiGbl_" Internal procedures within the subsystem are now 10517prefixed with "Acpi" (with only a few exceptions). The original 10518two-letter abbreviation for the subcomponent remains after "Acpi" 10519- for example, CmCallocate became AcpiCmCallocate. 10520 10521Added a source code translation/conversion utility. Used to 10522generate the Linux source code, it can be modified to generate 10523other types of source as well. Can also be used to cleanup 10524existing source by removing extraneous spaces and blank lines. 10525Found in tools/acpisrc/* 10526 10527OsdUnMapMemory was renamed to OsdUnmapMemory and then 10528AcpiOsUnmapMemory. (UnMap became Unmap). 10529 10530A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10531When set to one, this indicates that the caller wants to use the 10532 10533semaphore as a mutex, not a counting semaphore. ACPI CA uses 10534both types. However, implementers of this call may want to use 10535different OS primitives depending on the type of semaphore 10536requested. For example, some operating systems provide separate 10537 10538"mutex" and "semaphore" interfaces - where the mutex interface is 10539much faster because it doesn't have all the overhead of a full 10540semaphore implementation. 10541 10542Fixed a deadlock problem where a method that accesses the PCI 10543address space can block forever if it is the first access to the 10544space. 10545 10546------------------------------------------- 10547Summary of changes for this label: 06_02_00 10548 10549Support for environments that cannot handle unaligned data 10550accesses (e.g. firmware and OS environments devoid of alignment 10551handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10552been added (via configurable macros) in these three areas: - 10553Transfer of data from the raw AML byte stream is done via byte 10554moves instead of word/dword/qword moves. - External objects are 10555aligned within the user buffer, including package elements (sub- 10556objects). - Conversion of name strings to UINT32 Acpi Names is now 10557done byte-wise. 10558 10559The Store operator was modified to mimic Microsoft's 10560implementation when storing to a Buffer Field. 10561 10562Added a check of the BM_STS bit before entering C3. 10563 10564The methods subdirectory has been obsoleted and removed. A new 10565file, cmeval.c subsumes the functionality. 10566 10567A 16-bit (DOS) version of AcpiExec has been developed. The 10568makefile is under the acpiexec directory. 10569