changes.txt revision 219707
17675SEdward.Pilatowicz@Sun.COM---------------------------------------- 27675SEdward.Pilatowicz@Sun.COM16 March 2011. Summary of changes for version 20110316: 37675SEdward.Pilatowicz@Sun.COM 47675SEdward.Pilatowicz@Sun.COMx 57675SEdward.Pilatowicz@Sun.COM1) ACPI CA Core Subsystem: 67675SEdward.Pilatowicz@Sun.COM 77675SEdward.Pilatowicz@Sun.COMFixed a problem caused by a _PRW method appearing at the namespace root scope 87675SEdward.Pilatowicz@Sun.COMduring the setup of wake GPEs. A fault could occur if a _PRW directly under the 97675SEdward.Pilatowicz@Sun.COMroot object was passed to the AcpiSetupGpeForWake interface. Lin Ming. 107675SEdward.Pilatowicz@Sun.COM 117675SEdward.Pilatowicz@Sun.COMImplemented support for "spurious" Global Lock interrupts. On some systems, a 127675SEdward.Pilatowicz@Sun.COMglobal lock interrupt can occur without the pending flag being set. Upon a GL 137675SEdward.Pilatowicz@Sun.COMinterrupt, we now ensure that a thread is actually waiting for the lock before 147675SEdward.Pilatowicz@Sun.COMsignaling GL availability. Rafael Wysocki, Bob Moore. 157675SEdward.Pilatowicz@Sun.COM 167675SEdward.Pilatowicz@Sun.COMExample Code and Data Size: These are the sizes for the OS-independent acpica.lib 177675SEdward.Pilatowicz@Sun.COMproduced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of 187675SEdward.Pilatowicz@Sun.COMthe code includes the debug output trace mechanism and has a much larger code and 197675SEdward.Pilatowicz@Sun.COMdata size. 207675SEdward.Pilatowicz@Sun.COM 217675SEdward.Pilatowicz@Sun.COM Previous Release (VC 9.0): 227675SEdward.Pilatowicz@Sun.COM Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 237675SEdward.Pilatowicz@Sun.COM Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 247675SEdward.Pilatowicz@Sun.COM Current Release (VC 9.0): 257675SEdward.Pilatowicz@Sun.COM Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total 267675SEdward.Pilatowicz@Sun.COM Debug Version: 164.2K Code, 67.9K Data, 232.1K Total 277675SEdward.Pilatowicz@Sun.COM 287675SEdward.Pilatowicz@Sun.COM2) iASL Compiler/Disassembler and Tools: 297675SEdward.Pilatowicz@Sun.COM 307675SEdward.Pilatowicz@Sun.COMImplemented full support for the "SLIC" ACPI table. Includes support in the 317675SEdward.Pilatowicz@Sun.COMheader files, disassembler, table compiler, and template generator. Bob Moore, 327675SEdward.Pilatowicz@Sun.COMLin Ming. 337675SEdward.Pilatowicz@Sun.COM 347675SEdward.Pilatowicz@Sun.COMAcpiXtract: Correctly handle embedded comments and messages from AcpiDump. 357675SEdward.Pilatowicz@Sun.COMApparently some or all versions of acpidump will occasionally emit a comment like 367675SEdward.Pilatowicz@Sun.COM"Wrong checksum", etc., into the dump file. This was causing problems for 377675SEdward.Pilatowicz@Sun.COMAcpiXtract. ACPICA BZ 905. 387675SEdward.Pilatowicz@Sun.COM 397675SEdward.Pilatowicz@Sun.COMiASL: Fix the Linux makefile by removing an inadvertent double file inclusion. 407675SEdward.Pilatowicz@Sun.COMACPICA BZ 913. 417675SEdward.Pilatowicz@Sun.COM 427675SEdward.Pilatowicz@Sun.COMAcpiExec: Update installation of operation region handlers. Install one handler 437675SEdward.Pilatowicz@Sun.COMfor a user-defined address space. This is used by the ASL test suite (ASLTS). 447675SEdward.Pilatowicz@Sun.COM 457675SEdward.Pilatowicz@Sun.COM---------------------------------------- 467675SEdward.Pilatowicz@Sun.COM11 February 2011. Summary of changes for version 20110211: 477675SEdward.Pilatowicz@Sun.COM 487675SEdward.Pilatowicz@Sun.COM1) ACPI CA Core Subsystem: 497675SEdward.Pilatowicz@Sun.COM 507675SEdward.Pilatowicz@Sun.COMAdded a mechanism to defer _REG methods for some early-installed handlers. 517675SEdward.Pilatowicz@Sun.COMMost user handlers should be installed before call to AcpiEnableSubsystem. 527675SEdward.Pilatowicz@Sun.COMHowever, Event handlers and region handlers should be installed after 537675SEdward.Pilatowicz@Sun.COMAcpiInitializeObjects. Override handlers for the "default" regions should be 547675SEdward.Pilatowicz@Sun.COMinstalled early, however. This change executes all _REG methods for the 557675SEdward.Pilatowicz@Sun.COMdefault regions (Memory/IO/PCI/DataTable) simultaneously to prevent any 567675SEdward.Pilatowicz@Sun.COMchicken/egg issues between them. ACPICA BZ 848. 577675SEdward.Pilatowicz@Sun.COM 587675SEdward.Pilatowicz@Sun.COMImplemented an optimization for GPE detection. This optimization will simply 597675SEdward.Pilatowicz@Sun.COMignore GPE registers that contain no enabled GPEs -- there is no need to 607675SEdward.Pilatowicz@Sun.COMread the register since this information is available internally. This 617675SEdward.Pilatowicz@Sun.COMbecomes more important on machines with a large GPE space. ACPICA bugzilla 627675SEdward.Pilatowicz@Sun.COM884. Lin Ming. Suggestion from Joe Liu. 637675SEdward.Pilatowicz@Sun.COM 647675SEdward.Pilatowicz@Sun.COMRemoved all use of the highly unreliable FADT revision field. The revision 65number in the FADT has been found to be completely unreliable and cannot be 66trusted. Only the actual table length can be used to infer the version. This 67change updates the ACPICA core and the disassembler so that both no longer 68even look at the FADT version and instead depend solely upon the FADT 69length. 70 71Fix an unresolved name issue for the no-debug and no-error-message source 72generation cases. The _AcpiModuleName was left undefined in these cases, but 73it is actually needed as a parameter to some interfaces. Define 74_AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888. 75 76Split several large files (makefiles and project files updated) 77 utglobal.c -> utdecode.c 78 dbcomds.c -> dbmethod.c dbnames.c 79 dsopcode.c -> dsargs.c dscontrol.c 80 dsload.c -> dsload2.c 81 aslanalyze.c -> aslbtypes.c aslwalks.c 82 83Example Code and Data Size: These are the sizes for the OS-independent 84acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 85debug version of the code includes the debug output trace mechanism and has 86a much larger code and data size. 87 88 Previous Release (VC 9.0): 89 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 90 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 91 Current Release (VC 9.0): 92 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 93 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 94 952) iASL Compiler/Disassembler and Tools: 96 97iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__. 98These are useful C-style macros with the standard definitions. ACPICA 99bugzilla 898. 100 101iASL/DTC: Added support for integer expressions and labels. Support for full 102expressions for all integer fields in all ACPI tables. Support for labels in 103"generic" portions of tables such as UEFI. See the iASL reference manual. 104 105Debugger: Added a command to display the status of global handlers. The 106"handlers" command will display op region, fixed event, and miscellaneous 107global handlers. installation status -- and for op regions, whether default 108or user-installed handler will be used. 109 110iASL: Warn if reserved method incorrectly returns a value. Many predefined 111names are defined such that they do not return a value. If implemented as a 112method, issue a warning if such a name explicitly returns a value. ACPICA 113Bugzilla 855. 114 115iASL: Added detection of GPE method name conflicts. Detects a conflict where 116there are two GPE methods of the form _Lxy and _Exy in the same scope. (For 117example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848. 118 119iASL/DTC: Fixed a couple input scanner issues with comments and line 120numbers. Comment remover could get confused and miss a comment ending. Fixed 121a problem with line counter maintenance. 122 123iASL/DTC: Reduced the severity of some errors from fatal to error. There is 124no need to abort on simple errors within a field definition. 125 126Debugger: Simplified the output of the help command. All help output now in 127a single screen, instead of help subcommands. ACPICA Bugzilla 897. 128 129 130---------------------------------------- 13112 January 2011. Summary of changes for version 20110112: 132 1331) ACPI CA Core Subsystem: 134 135Fixed a race condition between method execution and namespace walks that can 136possibly cause a fault. The problem was apparently introduced in version 13720100528 as a result of a performance optimization that reduces the number 138of 139namespace walks upon method exit by using the delete_namespace_subtree 140function instead of the delete_namespace_by_owner function used previously. 141Bug is a missing namespace lock in the delete_namespace_subtree function. 142dana.myers@oracle.com 143 144Fixed several issues and a possible fault with the automatic "serialized" 145method support. History: This support changes a method to "serialized" on 146the 147fly if the method generates an AE_ALREADY_EXISTS error, indicating the 148possibility that it cannot handle reentrancy. This fix repairs a couple of 149issues seen in the field, especially on machines with many cores: 150 151 1) Delete method children only upon the exit of the last thread, 152 so as to not delete objects out from under other running threads 153 (and possibly causing a fault.) 154 2) Set the "serialized" bit for the method only upon the exit of the 155 Last thread, so as to not cause deadlock when running threads 156 attempt to exit. 157 3) Cleanup the use of the AML "MethodFlags" and internal method flags 158 so that there is no longer any confusion between the two. 159 160 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 161 162Debugger: Now lock the namespace for duration of a namespace dump. Prevents 163issues if the namespace is changing dynamically underneath the debugger. 164Especially affects temporary namespace nodes, since the debugger displays 165these also. 166 167Updated the ordering of include files. The ACPICA headers should appear 168before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 169any necessary compiler-specific defines, etc. Affects the ACPI-related tools 170and utilities. 171 172Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 173to all module headers and signons, including the Linux header. This affects 174virtually every file in the ACPICA core subsystem, iASL compiler, and all 175utilities. 176 177Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 178project files for VC++ 6.0 are now obsolete. New project files can be found 179under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 180details. 181 182Example Code and Data Size: These are the sizes for the OS-independent 183acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 184debug version of the code includes the debug output trace mechanism and has 185a 186much larger code and data size. 187 188 Previous Release (VC 6.0): 189 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 190 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 191 Current Release (VC 9.0): 192 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 193 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 194 1952) iASL Compiler/Disassembler and Tools: 196 197iASL: Added generic data types to the Data Table compiler. Add "generic" 198data 199types such as UINT32, String, Unicode, etc., to simplify the generation of 200platform-defined tables such as UEFI. Lin Ming. 201 202iASL: Added listing support for the Data Table Compiler. Adds listing 203support 204(-l) to display actual binary output for each line of input code. 205 206---------------------------------------- 20709 December 2010. Summary of changes for version 20101209: 208 2091) ACPI CA Core Subsystem: 210 211Completed the major overhaul of the GPE support code that was begun in July 2122010. Major features include: removal of _PRW execution in ACPICA (host 213executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 214changes to existing interfaces, simplification of GPE handler operation, and 215a handful of new interfaces: 216 217 AcpiUpdateAllGpes 218 AcpiFinishGpe 219 AcpiSetupGpeForWake 220 AcpiSetGpeWakeMask 221 One new file, evxfgpe.c to consolidate all external GPE interfaces. 222 223See the ACPICA Programmer Reference for full details and programming 224information. See the new section 4.4 "General Purpose Event (GPE) Support" 225for a full overview, and section 8.7 "ACPI General Purpose Event Management" 226for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 227Bob Moore, Rafael Wysocki. 228 229Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 230GPE Notify". This feature will automatically issue a Notify(2) on a device 231when a Wake GPE is received if there is no corresponding GPE method or 232handler. ACPICA BZ 870. 233 234Fixed a problem with the Scope() operator during table parse and load phase. 235During load phase (table load or method execution), the scope operator 236should 237not enter the target into the namespace. Instead, it should open a new scope 238at the target location. Linux BZ 19462, ACPICA BZ 882. 239 240Example Code and Data Size: These are the sizes for the OS-independent 241acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 242debug version of the code includes the debug output trace mechanism and has 243a 244much larger code and data size. 245 246 Previous Release: 247 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 248 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 249 Current Release: 250 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 251 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 252 2532) iASL Compiler/Disassembler and Tools: 254 255iASL: Relax the alphanumeric restriction on _CID strings. These strings are 256"bus-specific" per the ACPI specification, and therefore any characters are 257acceptable. The only checks that can be performed are for a null string and 258perhaps for a leading asterisk. ACPICA BZ 886. 259 260iASL: Fixed a problem where a syntax error that caused a premature EOF 261condition on the source file emitted a very confusing error message. The 262premature EOF is now detected correctly. ACPICA BZ 891. 263 264Disassembler: Decode the AccessSize within a Generic Address Structure (byte 265access, word access, etc.) Note, this field does not allow arbitrary bit 266access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 267 268New: AcpiNames utility - Example namespace dump utility. Shows an example of 269ACPICA configuration for a minimal namespace dump utility. Uses table and 270namespace managers, but no AML interpreter. Does not add any functionality 271over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 272partition and configure ACPICA. ACPICA BZ 883. 273 274AML Debugger: Increased the debugger buffer size for method return objects. 275Was 4K, increased to 16K. Also enhanced error messages for debugger method 276execution, including the buffer overflow case. 277 278---------------------------------------- 27913 October 2010. Summary of changes for version 20101013: 280 2811) ACPI CA Core Subsystem: 282 283Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 284clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 285HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 286 287Changed the type of the predefined namespace object _TZ from ThermalZone to 288Device. This was found to be confusing to the host software that processes 289the various thermal zones, since _TZ is not really a ThermalZone. However, a 290Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 291Zhang. 292 293Added Windows Vista SP2 to the list of supported _OSI strings. The actual 294string is "Windows 2006 SP2". 295 296Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 297code automatically repairs _HID-related strings, this type of code is no 298longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 299 300Example Code and Data Size: These are the sizes for the OS-independent 301acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 302debug version of the code includes the debug output trace mechanism and has 303a 304much larger code and data size. 305 306 Previous Release: 307 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 308 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 309 Current Release: 310 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 311 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 312 3132) iASL Compiler/Disassembler and Tools: 314 315iASL: Implemented additional compile-time validation for _HID strings. The 316non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length 317of 318the string must be exactly seven or eight characters. For both _HID and _CID 319strings, all characters must be alphanumeric. ACPICA BZ 874. 320 321iASL: Allow certain "null" resource descriptors. Some BIOS code creates 322descriptors that are mostly or all zeros, with the expectation that they 323will 324be filled in at runtime. iASL now allows this as long as there is a 325"resource 326tag" (name) associated with the descriptor, which gives the ASL a handle 327needed to modify the descriptor. ACPICA BZ 873. 328 329Added single-thread support to the generic Unix application OSL. Primarily 330for iASL support, this change removes the use of semaphores in the single- 331threaded ACPICA tools/applications - increasing performance. The 332_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 333option. ACPICA BZ 879. 334 335AcpiExec: several fixes for the 64-bit version. Adds XSDT support and 336support 337for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 338 339iASL: Moved all compiler messages to a new file, aslmessages.h. 340 341---------------------------------------- 34215 September 2010. Summary of changes for version 20100915: 343 3441) ACPI CA Core Subsystem: 345 346Removed the AcpiOsDerivePciId OSL interface. The various host 347implementations 348of this function were not OS-dependent and are now obsolete and can be 349removed from all host OSLs. This function has been replaced by 350AcpiHwDerivePciId, which is now part of the ACPICA core code. 351AcpiHwDerivePciId has been implemented without recursion. Adds one new 352module, hwpci.c. ACPICA BZ 857. 353 354Implemented a dynamic repair for _HID and _CID strings. The following 355problems are now repaired at runtime: 1) Remove a leading asterisk in the 356string, and 2) the entire string is uppercased. Both repairs are in 357accordance with the ACPI specification and will simplify host driver code. 358ACPICA BZ 871. 359 360The ACPI_THREAD_ID type is no longer configurable, internally it is now 361always UINT64. This simplifies the ACPICA code, especially any printf 362output. 363UINT64 is the only common data type for all thread_id types across all 364operating systems. It is now up to the host OSL to cast the native thread_id 365type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 366Lin Ming, Bob Moore. 367 368Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 369keyword is not standard across compilers, and this type allows inline to be 370configured on a per-compiler basis. Lin Ming. 371 372Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 373Added an extern for this boolean in acpixf.h. Some hosts utilize this value 374during suspend/restore operations. ACPICA BZ 869. 375 376All code that implements error/warning messages with the "ACPI:" prefix has 377been moved to a new module, utxferror.c. 378 379The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 380is used. ACPICA BZ 829. Lin Ming, Bob Moore. 381 382Example Code and Data Size: These are the sizes for the OS-independent 383acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 384debug version of the code includes the debug output trace mechanism and has 385a 386much larger code and data size. 387 388 Previous Release: 389 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 390 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 391 Current Release: 392 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 393 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 394 3952) iASL Compiler/Disassembler and Tools: 396 397iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 398This keeps the output files free of random error messages that may originate 399from within the namespace/interpreter code. Used this opportunity to merge 400all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 401866. Lin Ming, Bob Moore. 402 403Tools: update some printfs for ansi warnings on size_t. Handle width change 404of size_t on 32-bit versus 64-bit generations. Lin Ming. 405 406---------------------------------------- 40706 August 2010. Summary of changes for version 20100806: 408 4091) ACPI CA Core Subsystem: 410 411Designed and implemented a new host interface to the _OSI support code. This 412will allow the host to dynamically add or remove multiple _OSI strings, as 413well as install an optional handler that is called for each _OSI invocation. 414Also added a new AML debugger command, 'osi' to display and modify the 415global 416_OSI string table, and test support in the AcpiExec utility. See the ACPICA 417reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 418New Functions: 419 AcpiInstallInterface - Add an _OSI string. 420 AcpiRemoveInterface - Delete an _OSI string. 421 AcpiInstallInterfaceHandler - Install optional _OSI handler. 422Obsolete Functions: 423 AcpiOsValidateInterface - no longer used. 424New Files: 425 source/components/utilities/utosi.c 426 427Re-introduced the support to enable multi-byte transfers for Embedded 428Controller (EC) operation regions. A reported problem was found to be a bug 429in the host OS, not in the multi-byte support. Previously, the maximum data 430size passed to the EC operation region handler was a single byte. There are 431often EC Fields larger than one byte that need to be transferred, and it is 432useful for the EC driver to lock these as a single transaction. This change 433enables single transfers larger than 8 bits. This effectively changes the 434access to the EC space from ByteAcc to AnyAcc, and will probably require 435changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 436transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 437 438Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 439prototype in acpiosxf.h had the output value pointer as a (void *). 440It should be a (UINT64 *). This may affect some host OSL code. 441 442Fixed a couple problems with the recently modified Linux makefiles for iASL 443and AcpiExec. These new makefiles place the generated object files in the 444local directory so that there can be no collisions between the files that 445are 446shared between them that are compiled with different options. 447 448Example Code and Data Size: These are the sizes for the OS-independent 449acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 450debug version of the code includes the debug output trace mechanism and has 451a 452much larger code and data size. 453 454 Previous Release: 455 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 456 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 457 Current Release: 458 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 459 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 460 4612) iASL Compiler/Disassembler and Tools: 462 463iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 464namespace from and disassemble an entire group of AML files. Useful for 465loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 466disassembling with one simple command. ACPICA BZ 865. Lin Ming. 467 468iASL: Allow multiple invocations of -e option. This change allows multiple 469uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 470Lin Ming. 471 472---------------------------------------- 47302 July 2010. Summary of changes for version 20100702: 474 4751) ACPI CA Core Subsystem: 476 477Implemented several updates to the recently added GPE reference count 478support. The model for "wake" GPEs is changing to give the host OS complete 479control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 480methods, since the host already must execute them. Also, additional changes 481were made to help ensure that the reference counts are kept in proper 482synchronization with reality. Rafael J. Wysocki. 483 4841) Ensure that GPEs are not enabled twice during initialization. 4852) Ensure that GPE enable masks stay in sync with the reference count. 4863) Do not inadvertently enable GPEs when writing GPE registers. 4874) Remove the internal wake reference counter and add new AcpiGpeWakeup 488interface. This interface will set or clear individual GPEs for wakeup. 4895) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 490are now used for "runtime" GPEs only. 491 492Changed the behavior of the GPE install/remove handler interfaces. The GPE 493is 494no longer disabled during this process, as it was found to cause problems on 495some machines. Rafael J. Wysocki. 496 497Reverted a change introduced in version 20100528 to enable Embedded 498Controller multi-byte transfers. This change was found to cause problems 499with 500Index Fields and possibly Bank Fields. It will be reintroduced when these 501problems have been resolved. 502 503Fixed a problem with references to Alias objects within Package Objects. A 504reference to an Alias within the definition of a Package was not always 505resolved properly. Aliases to objects like Processors, Thermal zones, etc. 506were resolved to the actual object instead of a reference to the object as 507it 508should be. Package objects are only allowed to contain integer, string, 509buffer, package, and reference objects. Redhat bugzilla 608648. 510 511Example Code and Data Size: These are the sizes for the OS-independent 512acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 513debug version of the code includes the debug output trace mechanism and has 514a 515much larger code and data size. 516 517 Previous Release: 518 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 519 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 520 Current Release: 521 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 522 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 523 5242) iASL Compiler/Disassembler and Tools: 525 526iASL: Implemented a new compiler subsystem to allow definition and 527compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 528are called "ACPI Data Tables", and the new compiler is the "Data Table 529Compiler". This compiler is intended to simplify the existing error-prone 530process of creating these tables for the BIOS, as well as allowing the 531disassembly, modification, recompilation, and override of existing ACPI data 532tables. See the iASL User Guide for detailed information. 533 534iASL: Implemented a new Template Generator option in support of the new Data 535Table Compiler. This option will create examples of all known ACPI tables 536that can be used as the basis for table development. See the iASL 537documentation and the -T option. 538 539Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 540Descriptor Table). 541 542Updated the Linux makefiles for iASL and AcpiExec to place the generated 543object files in the local directory so that there can be no collisions 544between the shared files between them that are generated with different 545options. 546 547Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 548the #define __APPLE__ to enable this support. 549 550---------------------------------------- 55128 May 2010. Summary of changes for version 20100528: 552 553Note: The ACPI 4.0a specification was released on April 5, 2010 and is 554available at www.acpi.info. This is primarily an errata release. 555 5561) ACPI CA Core Subsystem: 557 558Undefined ACPI tables: We are looking for the definitions for the following 559ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 560 561Implemented support to enable multi-byte transfers for Embedded Controller 562(EC) operation regions. Previously, the maximum data size passed to the EC 563operation region handler was a single byte. There are often EC Fields larger 564than one byte that need to be transferred, and it is useful for the EC 565driver 566to lock these as a single transaction. This change enables single transfers 567larger than 8 bits. This effectively changes the access to the EC space from 568ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 569Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 570transfers. Alexey Starikovskiy, Lin Ming 571 572Implemented a performance enhancement for namespace search and access. This 573change enhances the performance of namespace searches and walks by adding a 574backpointer to the parent in each namespace node. On large namespaces, this 575change can improve overall ACPI performance by up to 9X. Adding a pointer to 576each namespace node increases the overall size of the internal namespace by 577about 5%, since each namespace entry usually consists of both a namespace 578node and an ACPI operand object. However, this is the first growth of the 579namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 580 581Implemented a performance optimization that reduces the number of namespace 582walks. On control method exit, only walk the namespace if the method is 583known 584to have created namespace objects outside of its local scope. Previously, 585the 586entire namespace was traversed on each control method exit. This change can 587improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob 588Moore. 589 590Added support to truncate I/O addresses to 16 bits for Windows 591compatibility. 592Some ASL code has been seen in the field that inadvertently has bits set 593above bit 15. This feature is optional and is enabled if the BIOS requests 594any Windows OSI strings. It can also be enabled by the host OS. Matthew 595Garrett, Bob Moore. 596 597Added support to limit the maximum time for the ASL Sleep() operator. To 598prevent accidental deep sleeps, limit the maximum time that Sleep() will 599actually sleep. Configurable, the default maximum is two seconds. ACPICA 600bugzilla 854. 601 602Added run-time validation support for the _WDG and_WED Microsoft predefined 603methods. These objects are defined by "Windows Instrumentation", and are not 604part of the ACPI spec. ACPICA BZ 860. 605 606Expanded all statistic counters used during namespace and device 607initialization from 16 to 32 bits in order to support very large namespaces. 608 609Replaced all instances of %d in printf format specifiers with %u since 610nearly 611all integers in ACPICA are unsigned. 612 613Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly 614returned 615as AE_NO_HANDLER. 616 617Example Code and Data Size: These are the sizes for the OS-independent 618acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 619debug version of the code includes the debug output trace mechanism and has 620a 621much larger code and data size. 622 623 Previous Release: 624 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 625 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 626 Current Release: 627 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 628 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 629 6302) iASL Compiler/Disassembler and Tools: 631 632iASL: Added compiler support for the _WDG and_WED Microsoft predefined 633methods. These objects are defined by "Windows Instrumentation", and are not 634part of the ACPI spec. ACPICA BZ 860. 635 636AcpiExec: added option to disable the memory tracking mechanism. The -dt 637option will disable the tracking mechanism, which improves performance 638considerably. 639 640AcpiExec: Restructured the command line options into -d (disable) and -e 641(enable) options. 642 643---------------------------------------- 64428 April 2010. Summary of changes for version 20100428: 645 6461) ACPI CA Core Subsystem: 647 648Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 649including FADT-based and GPE Block Devices, execute any _PRW methods in the 650new table, and process any _Lxx/_Exx GPE methods in the new table. Any 651runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 652immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 653Devices. Provides compatibility with other ACPI implementations. Two new 654files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob 655Moore. 656 657Fixed a regression introduced in version 20100331 within the table manager 658where initial table loading could fail. This was introduced in the fix for 659AcpiReallocateRootTable. Also, renamed some of fields in the table manager 660data structures to clarify their meaning and use. 661 662Fixed a possible allocation overrun during internal object copy in 663AcpiUtCopySimpleObject. The original code did not correctly handle the case 664where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 665 666Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 667possible access beyond end-of-allocation. Also, now fully validate 668descriptor 669(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 670 671Example Code and Data Size: These are the sizes for the OS-independent 672acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 673debug version of the code includes the debug output trace mechanism and has 674a 675much larger code and data size. 676 677 Previous Release: 678 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 679 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 680 Current Release: 681 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 682 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 683 6842) iASL Compiler/Disassembler and Tools: 685 686iASL: Implemented Min/Max/Len/Gran validation for address resource 687descriptors. This change implements validation for the address fields that 688are common to all address-type resource descriptors. These checks are 689implemented: Checks for valid Min/Max, length within the Min/Max window, 690valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 691table 6-40 in the ACPI 4.0a specification. Also split the large 692aslrestype1.c 693and aslrestype2.c files into five new files. ACPICA BZ 840. 694 695iASL: Added support for the _Wxx predefined names. This support was missing 696and these names were not recognized by the compiler as valid predefined 697names. ACPICA BZ 851. 698 699iASL: Added an error for all predefined names that are defined to return no 700value and thus must be implemented as Control Methods. These include all of 701the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 702names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 703 704iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 705ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 706dynamically loaded via the Load() operator. Also cleaned up output for the - 707ta and -tc options. ACPICA BZ 853. 708 709Tests: Added a new file with examples of extended iASL error checking. 710Demonstrates the advanced error checking ability of the iASL compiler. 711Available at tests/misc/badcode.asl. 712 713---------------------------------------- 71431 March 2010. Summary of changes for version 20100331: 715 7161) ACPI CA Core Subsystem: 717 718Completed a major update for the GPE support in order to improve support for 719shared GPEs and to simplify both host OS and ACPICA code. Added a reference 720count mechanism to support shared GPEs that require multiple device drivers. 721Several external interfaces have changed. One external interface has been 722removed. One new external interface was added. Most of the GPE external 723interfaces now use the GPE spinlock instead of the events mutex (and the 724Flags parameter for many GPE interfaces has been removed.) See the updated 725ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 726Wysocki. ACPICA BZ 831. 727 728Changed: 729 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 730Removed: 731 AcpiSetGpeType 732New: 733 AcpiSetGpe 734 735Implemented write support for DataTable operation regions. These regions are 736defined via the DataTableRegion() operator. Previously, only read support 737was 738implemented. The ACPI specification allows DataTableRegions to be 739read/write, 740however. 741 742Implemented a new subsystem option to force a copy of the DSDT to local 743memory. Optionally copy the entire DSDT to local memory (instead of simply 744mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 745the original DSDT, creating the need for this option. Default is FALSE, do 746not copy the DSDT. 747 748Implemented detection of a corrupted or replaced DSDT. This change adds 749support to detect a DSDT that has been corrupted and/or replaced from 750outside 751the OS (by firmware). This is typically catastrophic for the system, but has 752been seen on some machines. Once this problem has been detected, the DSDT 753copy option can be enabled via system configuration. Lin Ming, Bob Moore. 754 755Fixed two problems with AcpiReallocateRootTable during the root table copy. 756When copying the root table to the new allocation, the length used was 757incorrect. The new size was used instead of the current table size, meaning 758too much data was copied. Also, the count of available slots for ACPI tables 759was not set correctly. Alexey Starikovskiy, Bob Moore. 760 761Example Code and Data Size: These are the sizes for the OS-independent 762acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 763debug version of the code includes the debug output trace mechanism and has 764a 765much larger code and data size. 766 767 Previous Release: 768 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 769 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 770 Current Release: 771 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 772 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 773 7742) iASL Compiler/Disassembler and Tools: 775 776iASL: Implement limited typechecking for values returned from predefined 777control methods. The type of any returned static (unnamed) object is now 778validated. For example, Return(1). ACPICA BZ 786. 779 780iASL: Fixed a predefined name object verification regression. Fixes a 781problem 782introduced in version 20100304. An error is incorrectly generated if a 783predefined name is declared as a static named object with a value defined 784using the keywords "Zero", "One", or "Ones". Lin Ming. 785 786iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 787reducing the requested registry access rights. ACPICA BZ 842. 788 789Disassembler: fixed a possible fault when generating External() statements. 790Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 791(carat). Fixes a string length allocation calculation. Lin Ming. 792 793---------------------------------------- 79404 March 2010. Summary of changes for version 20100304: 795 7961) ACPI CA Core Subsystem: 797 798Fixed a possible problem with the AML Mutex handling function 799AcpiExReleaseMutex where the function could fault under the very rare 800condition when the interpreter has blocked, the interpreter lock is 801released, 802the interpreter is then reentered via the same thread, and attempts to 803acquire an AML mutex that was previously acquired. FreeBSD report 140979. 804Lin 805Ming. 806 807Implemented additional configuration support for the AML "Debug Object". 808Output from the debug object can now be enabled via a global variable, 809AcpiGbl_EnableAmlDebugObject. This will assist with remote machine 810debugging. 811This debug output is now available in the release version of ACPICA instead 812of just the debug version. Also, the entire debug output module can now be 813configured out of the ACPICA build if desired. One new file added, 814executer/exdebug.c. Lin Ming, Bob Moore. 815 816Added header support for the ACPI MCHI table (Management Controller Host 817Interface Table). This table was added in ACPI 4.0, but the defining 818document 819has only recently become available. 820 821Standardized output of integer values for ACPICA warnings/errors. Always use 8220x prefix for hex output, always use %u for unsigned integer decimal output. 823Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 824invocations.) These invocations were converted from the original 825ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 826 827Example Code and Data Size: These are the sizes for the OS-independent 828acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 829debug version of the code includes the debug output trace mechanism and has 830a 831much larger code and data size. 832 833 Previous Release: 834 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 835 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 836 Current Release: 837 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 838 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 839 8402) iASL Compiler/Disassembler and Tools: 841 842iASL: Implemented typechecking support for static (non-control method) 843predefined named objects that are declared with the Name() operator. For 844example, the type of this object is now validated to be of type Integer: 845Name(_BBN, 1). This change migrates the compiler to using the core 846predefined 847name table instead of maintaining a local version. Added a new file, 848aslpredef.c. ACPICA BZ 832. 849 850Disassembler: Added support for the ACPI 4.0 MCHI table. 851 852---------------------------------------- 85321 January 2010. Summary of changes for version 20100121: 854 8551) ACPI CA Core Subsystem: 856 857Added the 2010 copyright to all module headers and signons. This affects 858virtually every file in the ACPICA core subsystem, the iASL compiler, the 859tools/utilities, and the test suites. 860 861Implemented a change to the AcpiGetDevices interface to eliminate 862unnecessary 863invocations of the _STA method. In the case where a specific _HID is 864requested, do not run _STA until a _HID match is found. This eliminates 865potentially dozens of _STA calls during a search for a particular 866device/HID, 867which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 868 869Implemented an additional repair for predefined method return values. 870Attempt 871to repair unexpected NULL elements within returned Package objects. Create 872an 873Integer of value zero, a NULL String, or a zero-length Buffer as 874appropriate. 875ACPICA BZ 818. Lin Ming, Bob Moore. 876 877Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 878code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 87964-bit AML integers). It is now obsolete and this change removes it from the 880ACPICA code base, replaced by UINT64. The original typedef has been retained 881for now for compatibility with existing device driver code. ACPICA BZ 824. 882 883Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 884the parse tree object. 885 886Added additional warning options for the gcc-4 generation. Updated the 887source 888accordingly. This includes some code restructuring to eliminate unreachable 889code, elimination of some gotos, elimination of unused return values, some 890additional casting, and removal of redundant declarations. 891 892Example Code and Data Size: These are the sizes for the OS-independent 893acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 894debug version of the code includes the debug output trace mechanism and has 895a 896much larger code and data size. 897 898 Previous Release: 899 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 900 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 901 Current Release: 902 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 903 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 904 9052) iASL Compiler/Disassembler and Tools: 906 907No functional changes for this release. 908 909---------------------------------------- 91014 December 2009. Summary of changes for version 20091214: 911 9121) ACPI CA Core Subsystem: 913 914Enhanced automatic data type conversions for predefined name repairs. This 915change expands the automatic repairs/conversions for predefined name return 916values to make Integers, Strings, and Buffers fully interchangeable. Also, a 917Buffer can be converted to a Package of Integers if necessary. The 918nsrepair.c 919module was completely restructured. Lin Ming, Bob Moore. 920 921Implemented automatic removal of null package elements during predefined 922name 923repairs. This change will automatically remove embedded and trailing NULL 924package elements from returned package objects that are defined to contain a 925variable number of sub-packages. The driver is then presented with a package 926with no null elements to deal with. ACPICA BZ 819. 927 928Implemented a repair for the predefined _FDE and _GTM names. The expected 929return value for both names is a Buffer of 5 DWORDs. This repair fixes two 930possible problems (both seen in the field), where a package of integers is 931returned, or a buffer of BYTEs is returned. With assistance from Jung-uk 932Kim. 933 934Implemented additional module-level code support. This change will properly 935execute module-level code that is not at the root of the namespace (under a 936Device object, etc.). Now executes the code within the current scope instead 937of the root. ACPICA BZ 762. Lin Ming. 938 939Fixed possible mutex acquisition errors when running _REG methods. Fixes a 940problem where mutex errors can occur when running a _REG method that is in 941the same scope as a method-defined operation region or an operation region 942under a module-level IF block. This type of code is rare, so the problem has 943not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 944 945Fixed a possible memory leak during module-level code execution. An object 946could be leaked for each block of executed module-level code if the 947interpreter slack mode is enabled This change deletes any implicitly 948returned 949object from the module-level code block. Lin Ming. 950 951Removed messages for successful predefined repair(s). The repair mechanism 952was considered too wordy. Now, messages are only unconditionally emitted if 953the return object cannot be repaired. Existing messages for successful 954repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 955 956Example Code and Data Size: These are the sizes for the OS-independent 957acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 958debug version of the code includes the debug output trace mechanism and has 959a 960much larger code and data size. 961 962 Previous Release: 963 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 964 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 965 Current Release: 966 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 967 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 968 9692) iASL Compiler/Disassembler and Tools: 970 971iASL: Fixed a regression introduced in 20091112 where intermediate .SRC 972files 973were no longer automatically removed at the termination of the compile. 974 975acpiexec: Implemented the -f option to specify default region fill value. 976This option specifies the value used to initialize buffers that simulate 977operation regions. Default value is zero. Useful for debugging problems that 978depend on a specific initial value for a region or field. 979 980---------------------------------------- 98112 November 2009. Summary of changes for version 20091112: 982 9831) ACPI CA Core Subsystem: 984 985Implemented a post-order callback to AcpiWalkNamespace. The existing 986interface only has a pre-order callback. This change adds an additional 987parameter for a post-order callback which will be more useful for bus scans. 988ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 989 990Modified the behavior of the operation region memory mapping cache for 991SystemMemory. Ensure that the memory mappings created for operation regions 992do not cross 4K page boundaries. Crossing a page boundary while mapping 993regions can cause kernel warnings on some hosts if the pages have different 994attributes. Such regions are probably BIOS bugs, and this is the workaround. 995Linux BZ 14445. Lin Ming. 996 997Implemented an automatic repair for predefined methods that must return 998sorted lists. This change will repair (by sorting) packages returned by 999_ALR, 1000_PSS, and _TSS. Drivers can now assume that the packages are correctly 1001sorted 1002and do not contain NULL package elements. Adds one new file, 1003namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 1004 1005Fixed a possible fault during predefined name validation if a return Package 1006object contains NULL elements. Also adds a warning if a NULL element is 1007followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement 1008may 1009include repair or removal of all such NULL elements where possible. 1010 1011Implemented additional module-level executable AML code support. This change 1012will execute module-level code that is not at the root of the namespace 1013(under a Device object, etc.) at table load time. Module-level executable 1014AML 1015code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 1016 1017Implemented a new internal function to create Integer objects. This function 1018simplifies miscellaneous object creation code. ACPICA BZ 823. 1019 1020Reduced the severity of predefined repair messages, Warning to Info. Since 1021the object was successfully repaired, a warning is too severe. Reduced to an 1022info message for now. These messages may eventually be changed to debug- 1023only. 1024ACPICA BZ 812. 1025 1026Example Code and Data Size: These are the sizes for the OS-independent 1027acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1028debug version of the code includes the debug output trace mechanism and has 1029a 1030much larger code and data size. 1031 1032 Previous Release: 1033 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1034 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1035 Current Release: 1036 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 1037 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 1038 10392) iASL Compiler/Disassembler and Tools: 1040 1041iASL: Implemented Switch() with While(1) so that Break works correctly. This 1042change correctly implements the Switch operator with a surrounding While(1) 1043so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 1044 1045iASL: Added a message if a package initializer list is shorter than package 1046length. Adds a new remark for a Package() declaration if an initializer list 1047exists, but is shorter than the declared length of the package. Although 1048technically legal, this is probably a coding error and it is seen in the 1049field. ACPICA BZ 815. Lin Ming, Bob Moore. 1050 1051iASL: Fixed a problem where the compiler could fault after the maximum 1052number 1053of errors was reached (200). 1054 1055acpixtract: Fixed a possible warning for pointer cast if the compiler 1056warning 1057level set very high. 1058 1059---------------------------------------- 106013 October 2009. Summary of changes for version 20091013: 1061 10621) ACPI CA Core Subsystem: 1063 1064Fixed a problem where an Operation Region _REG method could be executed more 1065than once. If a custom address space handler is installed by the host before 1066the "initialize operation regions" phase of the ACPICA initialization, any 1067_REG methods for that address space could be executed twice. This change 1068fixes the problem. ACPICA BZ 427. Lin Ming. 1069 1070Fixed a possible memory leak for the Scope() ASL operator. When the exact 1071invocation of "Scope(\)" is executed (change scope to root), one internal 1072operand object was leaked. Lin Ming. 1073 1074Implemented a run-time repair for the _MAT predefined method. If the _MAT 1075return value is defined as a Field object in the AML, and the field 1076size is less than or equal to the default width of an integer (32 or 107764),_MAT 1078can incorrectly return an Integer instead of a Buffer. ACPICA now 1079automatically repairs this problem. ACPICA BZ 810. 1080 1081Implemented a run-time repair for the _BIF and _BIX predefined methods. The 1082"OEM Information" field is often incorrectly returned as an Integer with 1083value zero if the field is not supported by the platform. This is due to an 1084ambiguity in the ACPI specification. The field should always be a string. 1085ACPICA now automatically repairs this problem by returning a NULL string 1086within the returned Package. ACPICA BZ 807. 1087 1088Example Code and Data Size: These are the sizes for the OS-independent 1089acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1090debug version of the code includes the debug output trace mechanism and has 1091a 1092much larger code and data size. 1093 1094 Previous Release: 1095 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1096 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1097 Current Release: 1098 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 1099 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 1100 11012) iASL Compiler/Disassembler and Tools: 1102 1103Disassembler: Fixed a problem where references to external symbols that 1104contained one or more parent-prefixes (carats) were not handled correctly, 1105possibly causing a fault. ACPICA BZ 806. Lin Ming. 1106 1107Disassembler: Restructured the code so that all functions that handle 1108external symbols are in a single module. One new file is added, 1109common/dmextern.c. 1110 1111AML Debugger: Added a max count argument for the Batch command (which 1112executes multiple predefined methods within the namespace.) 1113 1114iASL: Updated the compiler documentation (User Reference.) Available at 1115http://www.acpica.org/documentation/. ACPICA BZ 750. 1116 1117AcpiXtract: Updated for Lint and other formatting changes. Close all open 1118files. 1119 1120---------------------------------------- 112103 September 2009. Summary of changes for version 20090903: 1122 11231) ACPI CA Core Subsystem: 1124 1125For Windows Vista compatibility, added the automatic execution of an _INI 1126method located at the namespace root (\_INI). This method is executed at 1127table load time. This support is in addition to the automatic execution of 1128\_SB._INI. Lin Ming. 1129 1130Fixed a possible memory leak in the interpreter for AML package objects if 1131the package initializer list is longer than the defined size of the package. 1132This apparently can only happen if the BIOS changes the package size on the 1133fly (seen in a _PSS object), as ASL compilers do not allow this. The 1134interpreter will truncate the package to the defined size (and issue an 1135error 1136message), but previously could leave the extra objects undeleted if they 1137were 1138pre-created during the argument processing (such is the case if the package 1139consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 1140 1141Fixed a problem seen when a Buffer or String is stored to itself via ASL. 1142This has been reported in the field. Previously, ACPICA would zero out the 1143buffer/string. Now, the operation is treated as a noop. Provides Windows 1144compatibility. ACPICA BZ 803. Lin Ming. 1145 1146Removed an extraneous error message for ASL constructs of the form 1147Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 1148are seen in many BIOSs and are once again treated as NOOPs and no error is 1149emitted when they are encountered. ACPICA BZ 785. 1150 1151Fixed an extraneous warning message if a _DSM reserved method returns a 1152Package object. _DSM can return any type of object, so validation on the 1153return type cannot be performed. ACPICA BZ 802. 1154 1155Example Code and Data Size: These are the sizes for the OS-independent 1156acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1157debug version of the code includes the debug output trace mechanism and has 1158a 1159much larger code and data size. 1160 1161 Previous Release: 1162 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1163 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1164 Current Release: 1165 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 1166 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 1167 11682) iASL Compiler/Disassembler and Tools: 1169 1170iASL: Fixed a problem with the use of the Alias operator and Resource 1171Templates. The correct alias is now constructed and no error is emitted. 1172ACPICA BZ 738. 1173 1174iASL: Implemented the -I option to specify additional search directories for 1175include files. Allows multiple additional search paths for include files. 1176Directories are searched in the order specified on the command line (after 1177the local directory is searched.) ACPICA BZ 800. 1178 1179iASL: Fixed a problem where the full pathname for include files was not 1180emitted for warnings/errors. This caused the IDE support to not work 1181properly. ACPICA BZ 765. 1182 1183iASL: Implemented the -@ option to specify a Windows-style response file 1184containing additional command line options. ACPICA BZ 801. 1185 1186AcpiExec: Added support to load multiple AML files simultaneously (such as a 1187DSDT and multiple SSDTs). Also added support for wildcards within the AML 1188pathname. These features allow all machine tables to be easily loaded and 1189debugged together. ACPICA BZ 804. 1190 1191Disassembler: Added missing support for disassembly of HEST table Error Bank 1192subtables. 1193 1194---------------------------------------- 119530 July 2009. Summary of changes for version 20090730: 1196 1197The ACPI 4.0 implementation for ACPICA is complete with this release. 1198 11991) ACPI CA Core Subsystem: 1200 1201ACPI 4.0: Added header file support for all new and changed ACPI tables. 1202Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1203for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1204EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1205have been some ACPI 4.0 changes to other existing tables. Split the large 1206actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1207 1208ACPI 4.0: Implemented predefined name validation for all new names. There 1209are 121031 new names in ACPI 4.0. The predefined validation module was split into 1211two 1212files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1213 1214Implemented support for so-called "module-level executable code". This is 1215executable AML code that exists outside of any control method and is 1216intended 1217to be executed at table load time. Although illegal since ACPI 2.0, this 1218type 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. 1235ACPICA 1236BZ 793. 1237 1238Fixed a problem with AcpiReset where the reset would silently fail if the 1239register was one of the protected I/O ports. AcpiReset now bypasses the port 1240validation mechanism. This may eventually be driven into the AcpiRead/Write 1241interfaces. 1242 1243Fixed a regression related to the recent update of the AcpiRead/Write 1244interfaces. A sleep/suspend could fail if the optional PM2 Control register 1245does not exist during an attempt to write the Bus Master Arbitration bit. 1246(However, some hosts already delete the code that writes this bit, and the 1247code may in fact be obsolete at this date.) ACPICA BZ 799. 1248 1249Fixed a problem where AcpiTerminate could fault if inadvertently called 1250twice 1251in succession. ACPICA BZ 795. 1252 1253Example Code and Data Size: These are the sizes for the OS-independent 1254acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1255debug version of the code includes the debug output trace mechanism and has 1256a 1257much larger code and data size. 1258 1259 Previous Release: 1260 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1261 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1262 Current Release: 1263 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1264 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1265 12662) iASL Compiler/Disassembler and Tools: 1267 1268ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1269changes to existing tables. ACPICA BZ 775. 1270 1271---------------------------------------- 127225 June 2009. Summary of changes for version 20090625: 1273 1274The ACPI 4.0 Specification was released on June 16 and is available at 1275www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1276continue for the next few releases. 1277 12781) ACPI CA Core Subsystem: 1279 1280ACPI 4.0: Implemented interpreter support for the IPMI operation region 1281address space. Includes support for bi-directional data buffers and an IPMI 1282address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1283773. Lin Ming. 1284 1285ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1286support in both the header files and the disassembler. 1287 1288Completed a major update for the AcpiGetObjectInfo external interface. 1289Changes include: 1290 - Support for variable, unlimited length HID, UID, and CID strings. 1291 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1292 - Call the _SxW power methods on behalf of a device object. 1293 - Determine if a device is a PCI root bridge. 1294 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1295These changes will require an update to all callers of this interface. See 1296the updated ACPICA Programmer Reference for details. One new source file has 1297been added - utilities/utids.c. ACPICA BZ 368, 780. 1298 1299Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1300transfers. The Value parameter has been extended from 32 bits to 64 bits in 1301order to support new ACPI 4.0 tables. These changes will require an update 1302to 1303all callers of these interfaces. See the ACPICA Programmer Reference for 1304details. ACPICA BZ 768. 1305 1306Fixed several problems with AcpiAttachData. The handler was not invoked when 1307the host node was deleted. The data sub-object was not automatically deleted 1308when the host node was deleted. The interface to the handler had an unused 1309parameter, this was removed. ACPICA BZ 778. 1310 1311Enhanced the function that dumps ACPI table headers. All non-printable 1312characters in the string fields are now replaced with '?' (Signature, OemId, 1313OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1314these fields are occasionally seen in the field. ACPICA BZ 788. 1315 1316Fixed a problem with predefined method repair code where the code that 1317attempts to repair/convert an object of incorrect type is only executed on 1318the first time the predefined method is called. The mechanism that disables 1319warnings on subsequent calls was interfering with the repair mechanism. 1320ACPICA BZ 781. 1321 1322Fixed a possible memory leak in the predefined validation/repair code when a 1323buffer is automatically converted to an expected string object. 1324 1325Removed obsolete 16-bit files from the distribution and from the current git 1326tree head. ACPICA BZ 776. 1327 1328Example Code and Data Size: These are the sizes for the OS-independent 1329acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1330debug version of the code includes the debug output trace mechanism and has 1331a 1332much larger code and data size. 1333 1334 Previous Release: 1335 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1336 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1337 Current Release: 1338 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1339 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1340 13412) iASL Compiler/Disassembler and Tools: 1342 1343ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1344operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1345 1346ACPI 4.0: iASL - implemented compile-time validation support for all new 1347predefined names and control methods (31 total). ACPICA BZ 769. 1348 1349---------------------------------------- 135021 May 2009. Summary of changes for version 20090521: 1351 13521) ACPI CA Core Subsystem: 1353 1354Disabled the preservation of the SCI enable bit in the PM1 control register. 1355The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to 1356be 1357a "preserved" bit - "OSPM always preserves this bit position", section 13584.7.3.2.1. However, some machines fail if this bit is in fact preserved 1359because the bit needs to be explicitly set by the OS as a workaround. No 1360machines fail if the bit is not preserved. Therefore, ACPICA no longer 1361attempts to preserve this bit. 1362 1363Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1364incorrectly formed _PRT package could cause a fault. Added validation to 1365ensure that each package element is actually a sub-package. 1366 1367Implemented a new interface to install or override a single control method, 1368AcpiInstallMethod. This interface is useful when debugging in order to 1369repair 1370an existing method or to install a missing method without having to override 1371the entire ACPI table. See the ACPICA Programmer Reference for use and 1372examples. Lin Ming, Bob Moore. 1373 1374Fixed several reference count issues with the DdbHandle object that is 1375created from a Load or LoadTable operator. Prevent premature deletion of the 1376object. Also, mark the object as invalid once the table has been unloaded. 1377This is needed because the handle itself may not be deleted after the table 1378unload, depending on whether it has been stored in a named object by the 1379caller. Lin Ming. 1380 1381Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1382mutexes of the same sync level are acquired but then not released in strict 1383opposite order, the internally maintained Current Sync Level becomes 1384confused 1385and can cause subsequent execution errors. ACPICA BZ 471. 1386 1387Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1388specification has been changed to make the SyncLevel for mutex objects more 1389useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1390same as the current sync level. This makes more sense than the previous rule 1391(SyncLevel less than or equal). This change updates the code to match the 1392specification. 1393 1394Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1395(local) cache must be locked during all cache object deletions. Andrew 1396Baumann. 1397 1398Updated the Load operator to use operation region interfaces. This replaces 1399direct memory mapping with region access calls. Now, all region accesses go 1400through the installed region handler as they should. 1401 1402Simplified and optimized the NsGetNextNode function. Reduced parameter count 1403and reduced code for this frequently used function. 1404 1405Example Code and Data Size: These are the sizes for the OS-independent 1406acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1407debug version of the code includes the debug output trace mechanism and has 1408a 1409much larger code and data size. 1410 1411 Previous Release: 1412 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1413 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1414 Current Release: 1415 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1416 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1417 14182) iASL Compiler/Disassembler and Tools: 1419 1420Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1421with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1422after an invalid sub-table ID. 1423 1424---------------------------------------- 142522 April 2009. Summary of changes for version 20090422: 1426 14271) ACPI CA Core Subsystem: 1428 1429Fixed a compatibility issue with the recently released I/O port protection 1430mechanism. For windows compatibility, 1) On a port protection violation, 1431simply ignore the request and do not return an exception (allow the control 1432method to continue execution.) 2) If only part of the request overlaps a 1433protected port, read/write the individual ports that are not protected. 1434Linux 1435BZ 13036. Lin Ming 1436 1437Enhanced the execution of the ASL/AML BreakPoint operator so that it 1438actually 1439breaks into the AML debugger if the debugger is present. This matches the 1440ACPI-defined behavior. 1441 1442Fixed several possible warnings related to the use of the configurable 1443ACPI_THREAD_ID. This type can now be configured as either an integer or a 1444pointer with no warnings. Also fixes several warnings in printf-like 1445statements for the 64-bit build when the type is configured as a pointer. 1446ACPICA BZ 766, 767. 1447 1448Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1449warning options.) Examples include printf formats, aliasing, unused globals, 1450missing prototypes, missing switch default statements, use of non-ANSI 1451library functions, use of non-ANSI constructs. See generate/unix/Makefile 1452for 1453a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1454 1455Example Code and Data Size: These are the sizes for the OS-independent 1456acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1457debug version of the code includes the debug output trace mechanism and has 1458a 1459much larger code and data size. 1460 1461 Previous Release: 1462 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1463 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1464 Current Release: 1465 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1466 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1467 14682) iASL Compiler/Disassembler and Tools: 1469 1470iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings 1471on 1472the 64-bit build. 1473 1474iASL: Fixed a problem where the Unix/Linux versions of the compiler could 1475not 1476correctly digest Windows/DOS formatted files (with CR/LF). 1477 1478iASL: Added a new option for "quiet mode" (-va) that produces only the 1479compilation summary, not individual errors and warnings. Useful for large 1480batch compilations. 1481 1482AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1483timeout that can be used to detect hang conditions during execution of AML 1484code (includes both internal semaphores and AML-defined mutexes and events.) 1485 1486Added new makefiles for the generation of acpica in a generic unix-like 1487environment. These makefiles are intended to generate the acpica tools and 1488utilities from the original acpica git source tree structure. 1489 1490Test Suites: Updated and cleaned up the documentation files. Updated the 1491copyrights to 2009, affecting all source files. Use the new version of iASL 1492with quiet mode. Increased the number of available semaphores in the Windows 1493OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1494an alternate implementation of the semaphore timeout to allow aslts to 1495execute fully on Cygwin. 1496 1497---------------------------------------- 149820 March 2009. Summary of changes for version 20090320: 1499 15001) ACPI CA Core Subsystem: 1501 1502Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1503unloads. Added a reader/writer locking mechanism to allow multiple 1504concurrent 1505namespace walks (readers), but block a dynamic table unload until it can 1506gain 1507exclusive write access to the namespace. This fixes a problem where a table 1508unload could (possibly catastrophically) delete the portion of the namespace 1509that is currently being examined by a walk. Adds a new file, utlock.c, that 1510implements the reader/writer lock mechanism. ACPICA BZ 749. 1511 1512Fixed a regression introduced in version 20090220 where a change to the FADT 1513handling could cause the ACPICA subsystem to access non-existent I/O ports. 1514 1515Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1516FADT can contain both 32-bit and 64-bit versions of these addresses. 1517Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1518versions were valid, but not equal, the 64-bit version was used. This was 1519found to cause some machines to fail. Now, in this case, the 32-bit version 1520is used instead. This now matches the Windows behavior. 1521 1522Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1523compatibility and protects the standard PC I/O ports from access via AML 1524code. Adds a new file, hwvalid.c 1525 1526Fixed a possible extraneous warning message from the FADT support. The 1527message warns of a 32/64 length mismatch between the legacy and GAS 1528definitions for a register. 1529 1530Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1531made obsolete by the port protection mechanism above. It was previously used 1532to validate the entire address range of an operation region, which could be 1533incorrect if the range included illegal ports, but fields within the 1534operation region did not actually access those ports. Validation is now 1535performed on a per-field basis instead of the entire region. 1536 1537Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1538Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1539means a read/modify/write when writing to the register. However, for status 1540registers, writing a one means clear the event. Writing a zero means 1541preserve 1542the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1543and the ACPICA code now simply always writes a zero to the ignored bit. 1544 1545Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1546per the ACPI specification, for the control registers, preserve 1547(read/modify/write) all bits that are defined as either reserved or ignored. 1548 1549Updated the handling of write-only bits in the PM1 A/B Control Registers. 1550When reading the register, zero the write-only bits as per the ACPI spec. 1551ACPICA BZ 443. Lin Ming. 1552 1553Removed "Linux" from the list of supported _OSI strings. Linux no longer 1554wants to reply true to this request. The Windows strings are the only paths 1555through the AML that are tested and known to work properly. 1556 1557 Previous Release: 1558 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1559 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1560 Current Release: 1561 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1562 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1563 15642) iASL Compiler/Disassembler and Tools: 1565 1566Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1567aetables.c 1568 1569---------------------------------------- 157020 February 2009. Summary of changes for version 20090220: 1571 15721) ACPI CA Core Subsystem: 1573 1574Optimized the ACPI register locking. Removed locking for reads from the ACPI 1575bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1576not required when reading the single-bit registers. The 1577AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1578This will improve performance for reads on these registers. ACPICA BZ 760. 1579 1580Fixed the parameter validation for AcpiRead/Write. Now return 1581AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS 1582if 1583the register has an address of zero. Previously, these cases simply returned 1584AE_OK. For optional registers such as PM1B status/enable/control, the caller 1585should check for a valid register address before calling. ACPICA BZ 748. 1586 1587Renamed the external ACPI bit register access functions. Renamed 1588AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1589functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1590Also, restructured the code for these functions by simplifying the code path 1591and condensing duplicate code to reduce code size. 1592 1593Added new functions to transparently handle the possibly split PM1 A/B 1594registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1595now handle the split registers for PM1 Status, Enable, and Control. ACPICA 1596BZ 1597746. 1598 1599Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1600This function writes both of the PM1 control registers (A/B). These 1601registers 1602are different than the PM1 A/B status and enable registers in that different 1603values can be written to the A/B registers. Most notably, the SLP_TYP bits 1604can be different, as per the values returned from the _Sx predefined 1605methods. 1606 1607Removed an extra register write within AcpiHwClearAcpiStatus. This function 1608was writing an optional PM1B status register twice. The existing call to the 1609low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1610register. ACPICA BZ 751. 1611 1612Split out the PM1 Status registers from the FADT. Added new globals for 1613these 1614registers (A/B), similar to the way the PM1 Enable registers are handled. 1615Instead of overloading the FADT Event Register blocks. This makes the code 1616clearer and less prone to error. 1617 1618Fixed the warning message for when the platform contains too many ACPI 1619tables 1620for the default size of the global root table data structure. The 1621calculation 1622for the truncation value was incorrect. 1623 1624Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1625obsolete macro, since it is now a simple reference to ->common.type. There 1626were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1627 1628Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1629TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1630simply SLEEP_TYPE. ACPICA BZ 754. 1631 1632Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1633function is only needed on 64-bit host operating systems and is thus not 1634included for 32-bit hosts. 1635 1636Debug output: print the input and result for invocations of the _OSI 1637reserved 1638control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1639verbosity of this debug level. Len Brown. 1640 1641Example Code and Data Size: These are the sizes for the OS-independent 1642acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1643debug version of the code includes the debug output trace mechanism and has 1644a 1645much larger code and data size. 1646 1647 Previous Release: 1648 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1649 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1650 Current Release: 1651 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1652 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1653 16542) iASL Compiler/Disassembler and Tools: 1655 1656Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1657various legal performance profiles. 1658 1659---------------------------------------- 166023 January 2009. Summary of changes for version 20090123: 1661 16621) ACPI CA Core Subsystem: 1663 1664Added the 2009 copyright to all module headers and signons. This affects 1665virtually every file in the ACPICA core subsystem, the iASL compiler, and 1666the tools/utilities. 1667 1668Implemented a change to allow the host to override any ACPI table, including 1669dynamically loaded tables. Previously, only the DSDT could be replaced by 1670the 1671host. With this change, the AcpiOsTableOverride interface is called for each 1672table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1673a table is dynamically loaded via the AML Load operator. 1674 1675Updated FADT flag definitions, especially the Boot Architecture flags. 1676 1677Debugger: For the Find command, automatically pad the input ACPI name with 1678underscores if the name is shorter than 4 characters. This enables a match 1679with the actual namespace entry which is itself padded with underscores. 1680 1681Example Code and Data Size: These are the sizes for the OS-independent 1682acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1683debug version of the code includes the debug output trace mechanism and has 1684a 1685much larger code and data size. 1686 1687 Previous Release: 1688 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1689 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1690 Current Release: 1691 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1692 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1693 16942) iASL Compiler/Disassembler and Tools: 1695 1696Fix build error under Bison-2.4. 1697 1698Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1699flags. Now decode all flags, regardless of the FADT version. Flag output 1700includes the FADT version which first defined each flag. 1701 1702The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1703DSDT). Windows only. 1704 1705---------------------------------------- 170604 December 2008. Summary of changes for version 20081204: 1707 17081) ACPI CA Core Subsystem: 1709 1710The ACPICA Programmer Reference has been completely updated and revamped for 1711this release. This includes updates to the external interfaces, OSL 1712interfaces, the overview sections, and the debugger reference. 1713 1714Several new ACPICA interfaces have been implemented and documented in the 1715programmer reference: 1716AcpiReset - Writes the reset value to the FADT-defined reset register. 1717AcpiDisableAllGpes - Disable all available GPEs. 1718AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1719AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1720AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1721AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1722AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1723 1724Most of the public ACPI hardware-related interfaces have been moved to a new 1725file, components/hardware/hwxface.c 1726 1727Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1728register lengths within the FADT are now used, and the low level ACPI 1729register access no longer hardcodes the ACPI register lengths. Given that 1730there may be some risk in actually trusting the FADT register lengths, a 1731run- 1732time option was added to fall back to the default hardcoded lengths if the 1733FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1734option is set to true for now, and a warning is issued if a suspicious FADT 1735register length is overridden with the default value. 1736 1737Fixed a reference count issue in NsRepairObject. This problem was introduced 1738in version 20081031 as part of a fix to repair Buffer objects within 1739Packages. Lin Ming. 1740 1741Added semaphore support to the Linux/Unix application OS-services layer 1742(OSL). ACPICA BZ 448. Lin Ming. 1743 1744Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes 1745will 1746be implemented in the OSL, or will binary semaphores be used instead. 1747 1748Example Code and Data Size: These are the sizes for the OS-independent 1749acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1750debug version of the code includes the debug output trace mechanism and has 1751a 1752much larger code and data size. 1753 1754 Previous Release: 1755 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1756 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1757 Current Release: 1758 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1759 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1760 17612) iASL Compiler/Disassembler and Tools: 1762 1763iASL: Completed the '-e' option to include additional ACPI tables in order 1764to 1765aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1766Ming. 1767 1768iASL: Removed the "named object in while loop" error. The compiler cannot 1769determine how many times a loop will execute. ACPICA BZ 730. 1770 1771Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1772BZ 743. 1773 1774Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1775 1776---------------------------------------- 177731 October 2008. Summary of changes for version 20081031: 1778 17791) ACPI CA Core Subsystem: 1780 1781Restructured the ACPICA header files into public/private. acpi.h now 1782includes 1783only the "public" acpica headers. All other acpica headers are "private" and 1784should not be included by acpica users. One new file, accommon.h is used to 1785include the commonly used private headers for acpica code generation. Future 1786plans include moving all private headers to a new subdirectory. 1787 1788Implemented an automatic Buffer->String return value conversion for 1789predefined ACPI methods. For these methods (such as _BIF), added automatic 1790conversion for return objects that are required to be a String, but a Buffer 1791was found instead. This can happen when reading string battery data from an 1792operation region, because it used to be difficult to convert the data from 1793buffer to string from within the ASL. Ensures that the host OS is provided 1794with a valid null-terminated string. Linux BZ 11822. 1795 1796Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1797into two: one for the 32-bit vector, another for the 64-bit vector. This is 1798required because the host OS must setup the wake much differently for each 1799vector (real vs. protected mode, etc.) and the interface itself should not 1800be 1801deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1802interface, as it served no purpose (only the firmware reads the vector, OS 1803only writes the vector.) ACPICA BZ 731. 1804 1805Implemented a mechanism to escape infinite AML While() loops. Added a loop 1806counter to force exit from AML While loops if the count becomes too large. 1807This can occur in poorly written AML when the hardware does not respond 1808within a while loop and the loop does not implement a timeout. The maximum 1809loop count is configurable. A new exception code is returned when a loop is 1810broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1811 1812Optimized the execution of AML While loops. Previously, a control state 1813object was allocated and freed for each execution of the loop. The 1814optimization is to simply reuse the control state for each iteration. This 1815speeds up the raw loop execution time by about 5%. 1816 1817Enhanced the implicit return mechanism. For Windows compatibility, return an 1818implicit integer of value zero for methods that contain no executable code. 1819Such methods are seen in the field as stubs (presumably), and can cause 1820drivers to fail if they expect a return value. Lin Ming. 1821 1822Allow multiple backslashes as root prefixes in namepaths. In a fully 1823qualified namepath, allow multiple backslash prefixes. This can happen (and 1824is seen in the field) because of the use of a double-backslash in strings 1825(since backslash is the escape character) causing confusion. ACPICA BZ 739 1826Lin Ming. 1827 1828Emit a warning if two different FACS or DSDT tables are discovered in the 1829FADT. Checks if there are two valid but different addresses for the FACS and 1830DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1831 1832Consolidated the method argument count validation code. Merged the code that 1833validates control method argument counts into the predefined validation 1834module. Eliminates possible multiple warnings for incorrect argument counts. 1835 1836Implemented ACPICA example code. Includes code for ACPICA initialization, 1837handler installation, and calling a control method. Available at 1838source/tools/examples. 1839 1840Added a global pointer for FACS table to simplify internal FACS access. Use 1841the global pointer instead of using AcpiGetTableByIndex for each FACS 1842access. 1843This simplifies the code for the Global Lock and the Firmware Waking 1844Vector(s). 1845 1846Example Code and Data Size: These are the sizes for the OS-independent 1847acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1848debug version of the code includes the debug output trace mechanism and has 1849a 1850much larger code and data size. 1851 1852 Previous Release: 1853 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1854 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1855 Current Release: 1856 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1857 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1858 18592) iASL Compiler/Disassembler and Tools: 1860 1861iASL: Improved disassembly of external method calls. Added the -e option to 1862allow the inclusion of additional ACPI tables to help with the disassembly 1863of 1864method invocations and the generation of external declarations during the 1865disassembly. Certain external method invocations cannot be disassembled 1866properly without the actual declaration of the method. Use the -e option to 1867include the table where the external method(s) are actually declared. Most 1868useful for disassembling SSDTs that make method calls back to the master 1869DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1870-e dsdt.aml ssdt1.aml 1871 1872iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1873problem where the use of an alias within a namepath would result in a not 1874found error or cause the compiler to fault. Also now allows forward 1875references from the Alias operator itself. ACPICA BZ 738. 1876 1877---------------------------------------- 187826 September 2008. Summary of changes for version 20080926: 1879 18801) ACPI CA Core Subsystem: 1881 1882Designed and implemented a mechanism to validate predefined ACPI methods and 1883objects. This code validates the predefined ACPI objects (objects whose 1884names 1885start with underscore) that appear in the namespace, at the time they are 1886evaluated. The argument count and the type of the returned object are 1887validated against the ACPI specification. The purpose of this validation is 1888to detect problems with the BIOS-implemented predefined ACPI objects before 1889the results are returned to the ACPI-related drivers. Future enhancements 1890may 1891include actual repair of incorrect return objects where possible. Two new 1892files are nspredef.c and acpredef.h. 1893 1894Fixed a fault in the AML parser if a memory allocation fails during the Op 1895completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1896 1897Fixed an issue with implicit return compatibility. This change improves the 1898implicit return mechanism to be more compatible with the MS interpreter. Lin 1899Ming, ACPICA BZ 349. 1900 1901Implemented support for zero-length buffer-to-string conversions. Allow zero 1902length strings during interpreter buffer-to-string conversions. For example, 1903during the ToDecimalString and ToHexString operators, as well as implicit 1904conversions. Fiodor Suietov, ACPICA BZ 585. 1905 1906Fixed two possible memory leaks in the error exit paths of 1907AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1908similar in that they use a stack of state objects in order to eliminate 1909recursion. The stack must be fully unwound and deallocated if an error 1910occurs. Lin Ming. ACPICA BZ 383. 1911 1912Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the 1913global 1914ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1915Moore ACPICA BZ 442. 1916 1917Removed the obsolete version number in module headers. Removed the 1918"$Revision" number that appeared in each module header. This version number 1919was useful under SourceSafe and CVS, but has no meaning under git. It is not 1920only incorrect, it could also be misleading. 1921 1922Example Code and Data Size: These are the sizes for the OS-independent 1923acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1924debug version of the code includes the debug output trace mechanism and has 1925a 1926much larger code and data size. 1927 1928 Previous Release: 1929 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1930 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1931 Current Release: 1932 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1933 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1934 1935---------------------------------------- 193629 August 2008. Summary of changes for version 20080829: 1937 19381) ACPI CA Core Subsystem: 1939 1940Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1941Reference. Changes include the elimination of cheating on the Object field 1942for the DdbHandle subtype, addition of a reference class field to 1943differentiate the various reference types (instead of an AML opcode), and 1944the 1945cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1946 1947Reduce an error to a warning for an incorrect method argument count. 1948Previously aborted with an error if too few arguments were passed to a 1949control method via the external ACPICA interface. Now issue a warning 1950instead 1951and continue. Handles the case where the method inadvertently declares too 1952many arguments, but does not actually use the extra ones. Applies mainly to 1953the predefined methods. Lin Ming. Linux BZ 11032. 1954 1955Disallow the evaluation of named object types with no intrinsic value. 1956Return 1957AE_TYPE for objects that have no value and therefore evaluation is 1958undefined: 1959Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1960these types were allowed, but an exception would be generated at some point 1961during the evaluation. Now, the error is generated up front. 1962 1963Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1964(nsnames.c). Fixes a leak in the error exit path. 1965 1966Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These 1967debug 1968levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and 1969ACPI_EXCEPTION 1970interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1971ACPI_LV_EVENTS. 1972 1973Removed obsolete and/or unused exception codes from the acexcep.h header. 1974There is the possibility that certain device drivers may be affected if they 1975use any of these exceptions. 1976 1977The ACPICA documentation has been added to the public git source tree, under 1978acpica/documents. Included are the ACPICA programmer reference, the iASL 1979compiler reference, and the changes.txt release logfile. 1980 1981Example Code and Data Size: These are the sizes for the OS-independent 1982acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1983debug version of the code includes the debug output trace mechanism and has 1984a 1985much larger code and data size. 1986 1987 Previous Release: 1988 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1989 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1990 Current Release: 1991 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1992 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1993 19942) iASL Compiler/Disassembler and Tools: 1995 1996Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1997defines _SCP with 3 arguments. Previous versions defined it with only 1 1998argument. iASL now allows both definitions. 1999 2000iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 2001length subtables when disassembling ACPI tables. Also fixed a couple of 2002errors where a full 16-bit table type field was not extracted from the input 2003properly. 2004 2005acpisrc: Improve comment counting mechanism for generating source code 2006statistics. Count first and last lines of multi-line comments as whitespace, 2007not comment lines. Handle Linux legal header in addition to standard acpica 2008header. 2009 2010---------------------------------------- 2011 201229 July 2008. Summary of changes for version 20080729: 2013 20141) ACPI CA Core Subsystem: 2015 2016Fix a possible deadlock in the GPE dispatch. Remove call to 2017AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will 2018attempt 2019to acquire the GPE lock but can deadlock since the GPE lock is already held 2020at dispatch time. This code was introduced in version 20060831 as a response 2021to Linux BZ 6881 and has since been removed from Linux. 2022 2023Add a function to dereference returned reference objects. Examines the 2024return 2025object from a call to AcpiEvaluateObject. Any Index or RefOf references are 2026automatically dereferenced in an attempt to return something useful (these 2027reference types cannot be converted into an external ACPI_OBJECT.) Provides 2028MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 2029 2030x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 2031subtables for the MADT and one new subtable for the SRAT. Includes 2032disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 2033Specification, June 2008. 2034 2035Additional error checking for pathname utilities. Add error check after all 2036calls to AcpiNsGetPathnameLength. Add status return from 2037AcpiNsBuildExternalPath and check after all calls. Add parameter validation 2038to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 2039 2040Return status from the global init function AcpiUtGlobalInitialize. This is 2041used by both the kernel subsystem and the utilities such as iASL compiler. 2042The function could possibly fail when the caches are initialized. Yang Yi. 2043 2044Add a function to decode reference object types to strings. Created for 2045improved error messages. 2046 2047Improve object conversion error messages. Better error messages during 2048object 2049conversion from internal to the external ACPI_OBJECT. Used for external 2050calls 2051to AcpiEvaluateObject. 2052 2053Example Code and Data Size: These are the sizes for the OS-independent 2054acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2055debug version of the code includes the debug output trace mechanism and has 2056a 2057much larger code and data size. 2058 2059 Previous Release: 2060 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2061 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2062 Current Release: 2063 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 2064 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 2065 20662) iASL Compiler/Disassembler and Tools: 2067 2068Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 2069introduced in version 20080701. If the object being evaluated (via execute 2070command) is not a method, the debugger can hang while trying to obtain non- 2071existent parameters. 2072 2073iASL: relax error for using reserved "_T_x" identifiers. These names can 2074appear in a disassembled ASL file if they were emitted by the original 2075compiler. Instead of issuing an error or warning and forcing the user to 2076manually change these names, issue a remark instead. 2077 2078iASL: error if named object created in while loop. Emit an error if any 2079named 2080object is created within a While loop. If allowed, this code will generate a 2081run-time error on the second iteration of the loop when an attempt is made 2082to 2083create the same named object twice. ACPICA bugzilla 730. 2084 2085iASL: Support absolute pathnames for include files. Add support for absolute 2086pathnames within the Include operator. previously, only relative pathnames 2087were supported. 2088 2089iASL: Enforce minimum 1 interrupt in interrupt macro and Resource 2090Descriptor. 2091The ACPI spec requires one interrupt minimum. BZ 423 2092 2093iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 2094Handles the case for the Interrupt Resource Descriptor where 2095the ResourceSource argument is omitted but ResourceSourceIndex 2096is present. Now leave room for the Index. BZ 426 2097 2098iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 2099where an error message is emitted if the target does not exist. BZ 516 2100 2101iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 2102(get ACPI tables on Windows). This was apparently broken in version 210320070919. 2104 2105AcpiXtract: Handle EOF while extracting data. Correctly handle the case 2106where 2107the EOF happens immediately after the last table in the input file. Print 2108completion message. Previously, no message was displayed in this case. 2109 2110---------------------------------------- 211101 July 2008. Summary of changes for version 20080701: 2112 21130) Git source tree / acpica.org 2114 2115Fixed a problem where a git-clone from http would not transfer the entire 2116source tree. 2117 21181) ACPI CA Core Subsystem: 2119 2120Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 2121enable bit. Now performs a read-change-write of the enable register instead 2122of simply writing out the cached enable mask. This will prevent inadvertent 2123enabling of GPEs if a rogue GPE is received during initialization (before 2124GPE 2125handlers are installed.) 2126 2127Implemented a copy for dynamically loaded tables. Previously, dynamically 2128loaded tables were simply mapped - but on some machines this memory is 2129corrupted after suspend. Now copy the table to a local buffer. For the 2130OpRegion case, added checksum verify. Use the table length from the table 2131header, not the region length. For the Buffer case, use the table length 2132also. Dennis Noordsij, Bob Moore. BZ 10734 2133 2134Fixed a problem where the same ACPI table could not be dynamically loaded 2135and 2136unloaded more than once. Without this change, a table cannot be loaded again 2137once it has been loaded/unloaded one time. The current mechanism does not 2138unregister a table upon an unload. During a load, if the same table is 2139found, 2140this no longer returns an exception. BZ 722 2141 2142Fixed a problem where the wrong descriptor length was calculated for the 2143EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 2144are calculated as 12 bytes long, but the actual length in the internal 2145descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 2146by Linn Crosetto. BZ 728 2147 2148Fixed a possible memory leak in the Unload operator. The DdbHandle returned 2149by Load() did not have its reference count decremented during unload, 2150leading 2151to a memory leak. Lin Ming. BZ 727 2152 2153Fixed a possible memory leak when deleting thermal/processor objects. Any 2154associated notify handlers (and objects) were not being deleted. Fiodor 2155Suietov. BZ 506 2156 2157Fixed the ordering of the ASCII names in the global mutex table to match the 2158actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug 2159only. 2160Vegard Nossum. BZ 726 2161 2162Enhanced the AcpiGetObjectInfo interface to return the number of required 2163arguments if the object is a control method. Added this call to the debugger 2164so the proper number of default arguments are passed to a method. This 2165prevents a warning when executing methods from AcpiExec. 2166 2167Added a check for an invalid handle in AcpiGetObjectInfo. Return 2168AE_BAD_PARAMETER if input handle is invalid. BZ 474 2169 2170Fixed an extraneous warning from exconfig.c on the 64-bit build. 2171 2172Example Code and Data Size: These are the sizes for the OS-independent 2173acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2174debug version of the code includes the debug output trace mechanism and has 2175a 2176much larger code and data size. 2177 2178 Previous Release: 2179 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2180 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2181 Current Release: 2182 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 2183 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 2184 21852) iASL Compiler/Disassembler and Tools: 2186 2187iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 2188resource descriptor names. 2189 2190iASL: Detect invalid ASCII characters in input (windows version). Removed 2191the 2192"-CF" flag from the flex compile, enables correct detection of non-ASCII 2193characters in the input. BZ 441 2194 2195iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 2196"result of operation not used" warning when the DDB handle returned from 2197LoadTable is not used. The warning is not needed. BZ 590 2198 2199AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method 2200to 2201pass address of table to the AML. Added option to disable OpRegion 2202simulation 2203to allow creation of an OpRegion with a real address that was passed to 2204_CFG. 2205All of this allows testing of the Load and Unload operators from AcpiExec. 2206 2207Debugger: update tables command for unloaded tables. Handle unloaded tables 2208and use the standard table header output routine. 2209 2210---------------------------------------- 221109 June 2008. Summary of changes for version 20080609: 2212 22131) ACPI CA Core Subsystem: 2214 2215Implemented a workaround for reversed _PRT entries. A significant number of 2216BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 2217change dynamically detects and repairs this problem. Provides compatibility 2218with MS ACPI. BZ 6859 2219 2220Simplified the internal ACPI hardware interfaces to eliminate the locking 2221flag parameter from Register Read/Write. Added a new external interface, 2222AcpiGetRegisterUnlocked. 2223 2224Fixed a problem where the invocation of a GPE control method could hang. 2225This 2226was a regression introduced in 20080514. The new method argument count 2227validation mechanism can enter an infinite loop when a GPE method is 2228dispatched. Problem fixed by removing the obsolete code that passed GPE 2229block 2230information to the notify handler via the control method parameter pointer. 2231 2232Fixed a problem where the _SST execution status was incorrectly returned to 2233the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 223420080514. _SST is optional and a NOT_FOUND exception should never be 2235returned. BZ 716 2236 2237Fixed a problem where a deleted object could be accessed from within the AML 2238parser. This was a regression introduced in version 20080123 as a fix for 2239the 2240Unload operator. Lin Ming. BZ 10669 2241 2242Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 2243and eliminated the use of a negative index in a loop. Operands are now 2244displayed in the correct order, not backwards. This also fixes a regression 2245introduced in 20080514 on 64-bit systems where the elimination of 2246ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 2247 2248Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 2249path did not delete a locally allocated structure. 2250 2251Updated definitions for the DMAR and SRAT tables to synchronize with the 2252current specifications. Includes disassembler support. 2253 2254Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 2255loop termination value was used. Loop terminated on iteration early, missing 2256one mutex. Linn Crosetto 2257 2258Example Code and Data Size: These are the sizes for the OS-independent 2259acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2260debug version of the code includes the debug output trace mechanism and has 2261a 2262much larger code and data size. 2263 2264 Previous Release: 2265 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2266 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2267 Current Release: 2268 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 2269 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 2270 22712) iASL Compiler/Disassembler and Tools: 2272 2273Disassembler: Implemented support for EisaId() within _CID objects. Now 2274disassemble integer _CID objects back to EisaId invocations, including 2275multiple integers within _CID packages. Includes single-step support for 2276debugger also. 2277 2278Disassembler: Added support for DMAR and SRAT table definition changes. 2279 2280---------------------------------------- 228114 May 2008. Summary of changes for version 20080514: 2282 22831) ACPI CA Core Subsystem: 2284 2285Fixed a problem where GPEs were enabled too early during the ACPICA 2286initialization. This could lead to "handler not installed" errors on some 2287machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2288ensures that all operation regions and devices throughout the namespace have 2289been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2290 2291Implemented a change to the enter sleep code. Moved execution of the _GTS 2292method to just before setting sleep enable bit. The execution was moved from 2293AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2294immediately before the SLP_EN bit is set, as per the ACPI specification. 2295Luming Yu, BZ 1653. 2296 2297Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2298the GPE, even if ACPICA thinks that that it is already disabled. It is 2299possible that the AML or some other code has enabled the GPE unbeknownst to 2300the ACPICA code. 2301 2302Fixed a problem with the Field operator where zero-length fields would 2303return 2304an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length 2305ASL 2306field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2307 2308Implemented a fix for the Load operator, now load the table at the namespace 2309root. This reverts a change introduced in version 20071019. The table is now 2310loaded at the namespace root even though this goes against the ACPI 2311specification. This provides compatibility with other ACPI implementations. 2312The ACPI specification will be updated to reflect this in ACPI 4.0. Lin 2313Ming. 2314 2315Fixed a problem where ACPICA would not Load() tables with unusual 2316signatures. 2317Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2318acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2319Therefore, signature validation is worthless. Apparently MS ACPI accepts 2320such 2321signatures, ACPICA must be compatible. BZ 10454. 2322 2323Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2324fields to the exception string arrays to eliminate a -1 subtraction on the 2325SubStatus field. 2326 2327Updated the debug tracking macros to reduce overall code and data size. 2328Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2329instead of pointers to static strings. Jan Beulich and Bob Moore. 2330 2331Implemented argument count checking in control method invocation via 2332AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2333many. This applies only to extern programmatic control method execution, not 2334method-to-method calls within the AML. Lin Ming. 2335 2336Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2337longer needed, especially with the removal of 16-bit support. It was 2338replaced 2339mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit 2340on 234132/64-bit platforms is required. 2342 2343Added the C const qualifier for appropriate string constants -- mostly 2344MODULE_NAME and printf format strings. Jan Beulich. 2345 2346Example Code and Data Size: These are the sizes for the OS-independent 2347acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2348debug version of the code includes the debug output trace mechanism and has 2349a 2350much larger code and data size. 2351 2352 Previous Release: 2353 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2354 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2355 Current Release: 2356 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2357 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2358 23592) iASL Compiler/Disassembler and Tools: 2360 2361Implemented ACPI table revision ID validation in the disassembler. Zero is 2362always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2363means 32-bit and this is unusual. 2 or greater is 64-bit. 2364 2365---------------------------------------- 236621 March 2008. Summary of changes for version 20080321: 2367 23681) ACPI CA Core Subsystem: 2369 2370Implemented an additional change to the GPE support in order to suppress 2371spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2372disable incoming GPEs that are neither enabled nor disabled -- meaning that 2373the GPE is unknown to the system. This should prevent future interrupt 2374floods 2375from that GPE. BZ 6217 (Zhang Rui) 2376 2377Fixed a problem where NULL package elements were not returned to the 2378AcpiEvaluateObject interface correctly. The element was simply ignored 2379instead of returning a NULL ACPI_OBJECT package element, potentially causing 2380a buffer overflow and/or confusing the caller who expected a fixed number of 2381elements. BZ 10132 (Lin Ming, Bob Moore) 2382 2383Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, 2384Dword, 2385Qword), Field, BankField, and IndexField operators when invoked from inside 2386an executing control method. In this case, these operators created namespace 2387nodes that were incorrectly left marked as permanent nodes instead of 2388temporary nodes. This could cause a problem if there is race condition 2389between an exiting control method and a running namespace walk. (Reported by 2390Linn Crosetto) 2391 2392Fixed a problem where the CreateField and CreateXXXField operators would 2393incorrectly allow duplicate names (the name of the field) with no exception 2394generated. 2395 2396Implemented several changes for Notify handling. Added support for new 2397Notify 2398values (ACPI 2.0+) and improved the Notify debug output. Notify on 2399PowerResource objects is no longer allowed, as per the ACPI specification. 2400(Bob Moore, Zhang Rui) 2401 2402All Reference Objects returned via the AcpiEvaluateObject interface are now 2403marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved 2404for 2405NULL objects - either NULL package elements or unresolved named references. 2406 2407Fixed a problem where an extraneous debug message was produced for package 2408objects (when debugging enabled). The message "Package List length larger 2409than NumElements count" is now produced in the correct case, and is now an 2410error message rather than a debug message. Added a debug message for the 2411opposite case, where NumElements is larger than the Package List (the 2412package 2413will be padded out with NULL elements as per the ACPI spec.) 2414 2415Implemented several improvements for the output of the ASL "Debug" object to 2416clarify and keep all data for a given object on one output line. 2417 2418Fixed two size calculation issues with the variable-length Start Dependent 2419resource descriptor. 2420 2421Example Code and Data Size: These are the sizes for the OS-independent 2422acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2423debug version of the code includes the debug output trace mechanism and has 2424a much larger code and data size. 2425 2426 Previous Release: 2427 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2428 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2429 Current Release: 2430 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2431 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2432 24332) iASL Compiler/Disassembler and Tools: 2434 2435Fixed a problem with the use of the Switch operator where execution of the 2436containing method by multiple concurrent threads could cause an 2437AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2438actual Switch opcode, it must be simulated with local named temporary 2439variables and if/else pairs. The solution chosen was to mark any method that 2440uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2441 2442---------------------------------------- 244313 February 2008. Summary of changes for version 20080213: 2444 24451) ACPI CA Core Subsystem: 2446 2447Implemented another MS compatibility design change for GPE/Notify handling. 2448GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2449complete first. It is expected that the OSL will queue the enable request 2450behind all pending notify requests (may require changes to the local host 2451OSL 2452in AcpiOsExecute). Alexey Starikovskiy. 2453 2454Fixed a problem where buffer and package objects passed as arguments to a 2455control method via the external AcpiEvaluateObject interface could cause an 2456AE_AML_INTERNAL exception depending on the order and type of operators 2457executed by the target control method. 2458 2459Fixed a problem where resource descriptor size optimization could cause a 2460problem when a _CRS resource template is passed to a _SRS method. The _SRS 2461resource template must use the same descriptors (with the same size) as 2462returned from _CRS. This change affects the following resource descriptors: 2463IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2464 2465Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2466objects did not perform an implicit conversion as it should. These types 2467must 2468retain their initial type permanently as per the ACPI specification. 2469However, 2470a CopyObject to all other object types should not perform an implicit 2471conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2472 2473Fixed a problem with the AcpiGetDevices interface where the mechanism to 2474match device CIDs did not examine the entire list of available CIDs, but 2475instead aborted on the first non-matching CID. Andrew Patterson. 2476 2477Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro 2478was 2479inadvertently changed to return a 16-bit value instead of a 32-bit value, 2480truncating the upper dword of a 64-bit value. This macro is only used to 2481display debug output, so no incorrect calculations were made. Also, 2482reimplemented the macro so that a 64-bit shift is not performed by 2483inefficient compilers. 2484 2485Added missing va_end statements that should correspond with each va_start 2486statement. 2487 2488Example Code and Data Size: These are the sizes for the OS-independent 2489acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2490debug version of the code includes the debug output trace mechanism and has 2491a much larger code and data size. 2492 2493 Previous Release: 2494 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2495 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2496 Current Release: 2497 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2498 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2499 25002) iASL Compiler/Disassembler and Tools: 2501 2502Implemented full disassembler support for the following new ACPI tables: 2503BERT, EINJ, and ERST. Implemented partial disassembler support for the 2504complicated HEST table. These tables support the Windows Hardware Error 2505Architecture (WHEA). 2506 2507---------------------------------------- 250823 January 2008. Summary of changes for version 20080123: 2509 25101) ACPI CA Core Subsystem: 2511 2512Added the 2008 copyright to all module headers and signons. This affects 2513virtually every file in the ACPICA core subsystem, the iASL compiler, and 2514the tools/utilities. 2515 2516Fixed a problem with the SizeOf operator when used with Package and Buffer 2517objects. These objects have deferred execution for some arguments, and the 2518execution is now completed before the SizeOf is executed. This problem 2519caused 2520unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 25219558 2522 2523Implemented an enhancement to the interpreter "slack mode". In the absence 2524of 2525an explicit return or an implicitly returned object from the last executed 2526opcode, a control method will now implicitly return an integer of value 0 2527for 2528Microsoft compatibility. (Lin Ming) BZ 392 2529 2530Fixed a problem with the Load operator where an exception was not returned 2531in 2532the case where the table is already loaded. (Lin Ming) BZ 463 2533 2534Implemented support for the use of DDBHandles as an Indexed Reference, as 2535per 2536the ACPI spec. (Lin Ming) BZ 486 2537 2538Implemented support for UserTerm (Method invocation) for the Unload operator 2539as per the ACPI spec. (Lin Ming) BZ 580 2540 2541Fixed a problem with the LoadTable operator where the OemId and OemTableId 2542input strings could cause unexpected failures if they were shorter than the 2543maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2544 2545Implemented support for UserTerm (Method invocation) for the Unload operator 2546as per the ACPI spec. (Lin Ming) BZ 580 2547 2548Implemented header file support for new ACPI tables - BERT, ERST, EINJ, 2549HEST, 2550IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2551 2552Example Code and Data Size: These are the sizes for the OS-independent 2553acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2554debug version of the code includes the debug output trace mechanism and has 2555a much larger code and data size. 2556 2557 Previous Release: 2558 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2559 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2560 Current Release: 2561 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2562 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2563 25642) iASL Compiler/Disassembler and Tools: 2565 2566Implemented support in the disassembler for checksum validation on incoming 2567binary DSDTs and SSDTs. If incorrect, a message is displayed within the 2568table 2569header dump at the start of the disassembly. 2570 2571Implemented additional debugging information in the namespace listing file 2572created during compilation. In addition to the namespace hierarchy, the full 2573pathname to each namespace object is displayed. 2574 2575Fixed a problem with the disassembler where invalid ACPI tables could cause 2576faults or infinite loops. 2577 2578Fixed an unexpected parse error when using the optional "parameter types" 2579list in a control method declaration. (Lin Ming) BZ 397 2580 2581Fixed a problem where two External declarations with the same name did not 2582cause an error (Lin Ming) BZ 509 2583 2584Implemented support for full TermArgs (adding Argx, Localx and method 2585invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2586Ming) BZ 583,587 2587 2588---------------------------------------- 258919 December 2007. Summary of changes for version 20071219: 2590 25911) ACPI CA Core Subsystem: 2592 2593Implemented full support for deferred execution for the TermArg string 2594arguments for DataTableRegion. This enables forward references and full 2595operand resolution for the three string arguments. Similar to 2596OperationRegion 2597deferred argument execution.) Lin Ming. BZ 430 2598 2599Implemented full argument resolution support for the BankValue argument to 2600BankField. Previously, only constants were supported, now any TermArg may be 2601used. Lin Ming BZ 387, 393 2602 2603Fixed a problem with AcpiGetDevices where the search of a branch of the 2604device tree could be terminated prematurely. In accordance with the ACPI 2605specification, the search down the current branch is terminated if a device 2606is both not present and not functional (instead of just not present.) Yakui 2607Zhao. 2608 2609Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2610the underlying AML code changed the GPE enable registers. Now, any unknown 2611incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately 2612disabled 2613instead of simply ignored. Rui Zhang. 2614 2615Fixed a problem with Index Fields where the Index register was incorrectly 2616limited to a maximum of 32 bits. Now any size may be used. 2617 2618Fixed a couple memory leaks associated with "implicit return" objects when 2619the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2620 2621Example Code and Data Size: These are the sizes for the OS-independent 2622acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2623debug version of the code includes the debug output trace mechanism and has 2624a much larger code and data size. 2625 2626 Previous Release: 2627 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2628 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2629 Current Release: 2630 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2631 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2632 2633---------------------------------------- 263414 November 2007. Summary of changes for version 20071114: 2635 26361) ACPI CA Core Subsystem: 2637 2638Implemented event counters for each of the Fixed Events, the ACPI SCI 2639(interrupt) itself, and control methods executed. Named 2640AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2641should be useful for debugging and statistics. 2642 2643Implemented a new external interface, AcpiGetStatistics, to retrieve the 2644contents of the various event counters. Returns the current values for 2645AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2646AcpiMethodCount. The interface can be expanded in the future if new counters 2647are added. Device drivers should use this interface rather than access the 2648counters directly. 2649 2650Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2651the ShortDivide function worked incorrectly, causing problems with the BCD 2652functions with large input values. A truncation from 64-bit to 32-bit 2653inadvertently occurred. Internal BZ 435. Lin Ming 2654 2655Fixed a problem with Index references passed as method arguments. References 2656passed as arguments to control methods were dereferenced immediately (before 2657control was passed to the called method). The references are now correctly 2658passed directly to the called method. BZ 5389. Lin Ming 2659 2660Fixed a problem with CopyObject used in conjunction with the Index operator. 2661The reference was incorrectly dereferenced before the copy. The reference is 2662now correctly copied. BZ 5391. Lin Ming 2663 2664Fixed a problem with Control Method references within Package objects. These 2665references are now correctly generated. This completes the package 2666construction overhaul that began in version 20071019. 2667 2668Example Code and Data Size: These are the sizes for the OS-independent 2669acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2670debug version of the code includes the debug output trace mechanism and has 2671a much larger code and data size. 2672 2673 Previous Release: 2674 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2675 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2676 Current Release: 2677 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2678 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2679 2680 26812) iASL Compiler/Disassembler and Tools: 2682 2683The AcpiExec utility now installs handlers for all of the predefined 2684Operation Region types. New types supported are: PCI_Config, CMOS, and 2685PCIBARTarget. 2686 2687Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2688bit) address fields for the DSDT and FACS within the FADT were not being 2689used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2690and Bob Moore 2691 2692---------------------------------------- 269319 October 2007. Summary of changes for version 20071019: 2694 26951) ACPI CA Core Subsystem: 2696 2697Fixed a problem with the Alias operator when the target of the alias is a 2698named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2699Processor, and ThermalZone. In these cases, any children of the original 2700operator could not be accessed via the alias, potentially causing unexpected 2701AE_NOT_FOUND exceptions. (BZ 9067) 2702 2703Fixed a problem with the Package operator where all named references were 2704created as object references and left otherwise unresolved. According to the 2705ACPI specification, a Package can only contain Data Objects or references to 2706control methods. The implication is that named references to Data Objects 2707(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2708immediately upon package creation. This is the approach taken with this 2709change. References to all other named objects (Methods, Devices, Scopes, 2710etc.) are all now properly created as reference objects. (BZ 5328) 2711 2712Reverted a change to Notify handling that was introduced in version 271320070508. This version changed the Notify handling from asynchronous to 2714fully synchronous (Device driver Notify handling with respect to the Notify 2715ASL operator). It was found that this change caused more problems than it 2716solved and was removed by most users. 2717 2718Fixed a problem with the Increment and Decrement operators where the type of 2719the target object could be unexpectedly and incorrectly changed. (BZ 353) 2720Lin Ming. 2721 2722Fixed a problem with the Load and LoadTable operators where the table 2723location within the namespace was ignored. Instead, the table was always 2724loaded into the root or current scope. Lin Ming. 2725 2726Fixed a problem with the Load operator when loading a table from a buffer 2727object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2728 2729Fixed a problem with the Debug object where a store of a DdbHandle reference 2730object to the Debug object could cause a fault. 2731 2732Added a table checksum verification for the Load operator, in the case where 2733the load is from a buffer. (BZ 578). 2734 2735Implemented additional parameter validation for the LoadTable operator. The 2736length of the input strings SignatureString, OemIdString, and OemTableId are 2737now checked for maximum lengths. (BZ 582) Lin Ming. 2738 2739Example Code and Data Size: These are the sizes for the OS-independent 2740acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2741debug version of the code includes the debug output trace mechanism and has 2742a much larger code and data size. 2743 2744 Previous Release: 2745 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2746 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2747 Current Release: 2748 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2749 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2750 2751 27522) iASL Compiler/Disassembler: 2753 2754Fixed a problem where if a single file was specified and the file did not 2755exist, no error message was emitted. (Introduced with wildcard support in 2756version 20070917.) 2757 2758---------------------------------------- 275919 September 2007. Summary of changes for version 20070919: 2760 27611) ACPI CA Core Subsystem: 2762 2763Designed and implemented new external interfaces to install and remove 2764handlers for ACPI table-related events. Current events that are defined are 2765LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2766they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2767AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2768 2769Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2770(acpi_serialized option on Linux) could cause some systems to hang during 2771initialization. (Bob Moore) BZ 8171 2772 2773Fixed a problem where objects of certain types (Device, ThermalZone, 2774Processor, PowerResource) can be not found if they are declared and 2775referenced from within the same control method (Lin Ming) BZ 341 2776 2777Example Code and Data Size: These are the sizes for the OS-independent 2778acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2779debug version of the code includes the debug output trace mechanism and has 2780a much larger code and data size. 2781 2782 Previous Release: 2783 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2784 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2785 Current Release: 2786 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2787 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2788 2789 27902) iASL Compiler/Disassembler: 2791 2792Implemented support to allow multiple files to be compiled/disassembled in a 2793single invocation. This includes command line wildcard support for both the 2794Windows and Unix versions of the compiler. This feature simplifies the 2795disassembly and compilation of multiple ACPI tables in a single directory. 2796 2797---------------------------------------- 279808 May 2007. Summary of changes for version 20070508: 2799 28001) ACPI CA Core Subsystem: 2801 2802Implemented a Microsoft compatibility design change for the handling of the 2803Notify AML operator. Previously, notify handlers were dispatched and 2804executed completely asynchronously in a deferred thread. The new design 2805still executes the notify handlers in a different thread, but the original 2806thread that executed the Notify() now waits at a synchronization point for 2807the notify handler to complete. Some machines depend on a synchronous Notify 2808operator in order to operate correctly. 2809 2810Implemented support to allow Package objects to be passed as method 2811arguments to the external AcpiEvaluateObject interface. Previously, this 2812would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2813implemented since there were no reserved control methods that required it 2814until recently. 2815 2816Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2817contained invalid non-zero values in reserved fields could cause later 2818failures because these fields have meaning in later revisions of the FADT. 2819For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2820are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2821 2822Fixed a problem where the Global Lock handle was not properly updated if a 2823thread that acquired the Global Lock via executing AML code then attempted 2824to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2825Liu. 2826 2827Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2828could be corrupted if the interrupt being removed was at the head of the 2829list. Reported by Linn Crosetto. 2830 2831Example Code and Data Size: These are the sizes for the OS-independent 2832acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2833debug version of the code includes the debug output trace mechanism and has 2834a much larger code and data size. 2835 2836 Previous Release: 2837 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2838 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2839 Current Release: 2840 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2841 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2842 2843---------------------------------------- 284420 March 2007. Summary of changes for version 20070320: 2845 28461) ACPI CA Core Subsystem: 2847 2848Implemented a change to the order of interpretation and evaluation of AML 2849operand objects within the AML interpreter. The interpreter now evaluates 2850operands in the order that they appear in the AML stream (and the 2851corresponding ASL code), instead of in the reverse order (after the entire 2852operand list has been parsed). The previous behavior caused several subtle 2853incompatibilities with the Microsoft AML interpreter as well as being 2854somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2855 2856Implemented a change to the ACPI Global Lock support. All interfaces to the 2857global lock now allow the same thread to acquire the lock multiple times. 2858This affects the AcpiAcquireGlobalLock external interface to the global lock 2859as well as the internal use of the global lock to support AML fields -- a 2860control method that is holding the global lock can now simultaneously access 2861AML fields that require global lock protection. Previously, in both cases, 2862this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2863AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2864Controller. There is no change to the behavior of the AML Acquire operator, 2865as this can already be used to acquire a mutex multiple times by the same 2866thread. BZ 8066. With assistance from Alexey Starikovskiy. 2867 2868Fixed a problem where invalid objects could be referenced in the AML 2869Interpreter after error conditions. During operand evaluation, ensure that 2870the internal "Return Object" field is cleared on error and only valid 2871pointers are stored there. Caused occasional access to deleted objects that 2872resulted in "large reference count" warning messages. Valery Podrezov. 2873 2874Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2875deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2876Podrezov. 2877 2878Fixed an internal problem with the handling of result objects on the 2879interpreter result stack. BZ 7872. Valery Podrezov. 2880 2881Removed obsolete code that handled the case where AML_NAME_OP is the target 2882of a reference (Reference.Opcode). This code was no longer necessary. BZ 28837874. Valery Podrezov. 2884 2885Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2886remnant from the previously discontinued 16-bit support. 2887 2888Example Code and Data Size: These are the sizes for the OS-independent 2889acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2890debug version of the code includes the debug output trace mechanism and has 2891a much larger code and data size. 2892 2893 Previous Release: 2894 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2895 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2896 Current Release: 2897 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2898 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2899 2900---------------------------------------- 290126 January 2007. Summary of changes for version 20070126: 2902 29031) ACPI CA Core Subsystem: 2904 2905Added the 2007 copyright to all module headers and signons. This affects 2906virtually every file in the ACPICA core subsystem, the iASL compiler, and 2907the utilities. 2908 2909Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2910during a table load. A bad pointer was passed in the case where the DSDT is 2911overridden, causing a fault in this case. 2912 2913Example Code and Data Size: These are the sizes for the OS-independent 2914acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2915debug version of the code includes the debug output trace mechanism and has 2916a much larger code and data size. 2917 2918 Previous Release: 2919 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2920 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2921 Current Release: 2922 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2923 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2924 2925---------------------------------------- 292615 December 2006. Summary of changes for version 20061215: 2927 29281) ACPI CA Core Subsystem: 2929 2930Support for 16-bit ACPICA has been completely removed since it is no longer 2931necessary and it clutters the code. All 16-bit macros, types, and 2932conditional compiles have been removed, cleaning up and simplifying the code 2933across the entire subsystem. DOS support is no longer needed since the 2934bootable Linux firmware kit is now available. 2935 2936The handler for the Global Lock is now removed during AcpiTerminate to 2937enable a clean subsystem restart, via the implementation of the 2938AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2939HP) 2940 2941Implemented enhancements to the multithreading support within the debugger 2942to enable improved multithreading debugging and evaluation of the subsystem. 2943(Valery Podrezov) 2944 2945Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2946memory used during the execution, as well as the maximum memory consumed by 2947each of the various object types. (Valery Podrezov) 2948 2949Example Code and Data Size: These are the sizes for the OS-independent 2950acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2951debug version of the code includes the debug output trace mechanism and has 2952a much larger code and data size. 2953 2954 Previous Release: 2955 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2956 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2957 Current Release: 2958 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2959 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2960 2961 29622) iASL Compiler/Disassembler and Tools: 2963 2964AcpiExec: Implemented a new option (-m) to display full memory use 2965statistics upon subsystem/program termination. (Valery Podrezov) 2966 2967---------------------------------------- 296809 November 2006. Summary of changes for version 20061109: 2969 29701) ACPI CA Core Subsystem: 2971 2972Optimized the Load ASL operator in the case where the source operand is an 2973operation region. Simply map the operation region memory, instead of 2974performing a bytewise read. (Region must be of type SystemMemory, see 2975below.) 2976 2977Fixed the Load ASL operator for the case where the source operand is a 2978region field. A buffer object is also allowed as the source operand. BZ 480 2979 2980Fixed a problem where the Load ASL operator allowed the source operand to be 2981an operation region of any type. It is now restricted to regions of type 2982SystemMemory, as per the ACPI specification. BZ 481 2983 2984Additional cleanup and optimizations for the new Table Manager code. 2985 2986AcpiEnable will now fail if all of the required ACPI tables are not loaded 2987(FADT, FACS, DSDT). BZ 477 2988 2989Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2990header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2991manually optimized to be aligned and will not work if it is byte-packed. 2992 2993Example Code and Data Size: These are the sizes for the OS-independent 2994acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2995debug version of the code includes the debug output trace mechanism and has 2996a much larger code and data size. 2997 2998 Previous Release: 2999 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3000 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3001 Current Release: 3002 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 3003 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 3004 3005 30062) iASL Compiler/Disassembler and Tools: 3007 3008Fixed a problem where the presence of the _OSI predefined control method 3009within complex expressions could cause an internal compiler error. 3010 3011AcpiExec: Implemented full region support for multiple address spaces. 3012SpaceId is now part of the REGION object. BZ 429 3013 3014---------------------------------------- 301511 October 2006. Summary of changes for version 20061011: 3016 30171) ACPI CA Core Subsystem: 3018 3019Completed an AML interpreter performance enhancement for control method 3020execution. Previously a 2-pass parse/execution, control methods are now 3021completely parsed and executed in a single pass. This improves overall 3022interpreter performance by ~25%, reduces code size, and reduces CPU stack 3023use. (Valery Podrezov + interpreter changes in version 20051202 that 3024eliminated namespace loading during the pass one parse.) 3025 3026Implemented _CID support for PCI Root Bridge detection. If the _HID does not 3027match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 3028obtained and also checked for an ID match. 3029 3030Implemented additional support for the PCI _ADR execution: upsearch until a 3031device scope is found before executing _ADR. This allows PCI_Config 3032operation regions to be declared locally within control methods underneath 3033PCI device objects. 3034 3035Fixed a problem with a possible race condition between threads executing 3036AcpiWalkNamespace and the AML interpreter. This condition was removed by 3037modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 3038entries created during any concurrent control method execution. An 3039additional namespace race condition is known to exist between 3040AcpiWalkNamespace and the Load/Unload ASL operators and is still under 3041investigation. 3042 3043Restructured the AML ParseLoop function, breaking it into several 3044subfunctions in order to reduce CPU stack use and improve maintainability. 3045(Mikhail Kouzmich) 3046 3047AcpiGetHandle: Fix for parameter validation to detect invalid combinations 3048of prefix handle and pathname. BZ 478 3049 3050Example Code and Data Size: These are the sizes for the OS-independent 3051acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3052debug version of the code includes the debug output trace mechanism and has 3053a much larger code and data size. 3054 3055 Previous Release: 3056 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3057 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3058 Current Release: 3059 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 3060 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 3061 30622) iASL Compiler/Disassembler and Tools: 3063 3064Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 3065to restore original behavior. 3066 3067---------------------------------------- 306827 September 2006. Summary of changes for version 20060927: 3069 30701) ACPI CA Core Subsystem: 3071 3072Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 3073These functions now use a spinlock for mutual exclusion and the interrupt 3074level indication flag is not needed. 3075 3076Fixed a problem with the Global Lock where the lock could appear to be 3077obtained before it is actually obtained. The global lock semaphore was 3078inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 3079Suietov. 3080 3081Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 3082a read from a buffer or region field. (BZ 458) Fiodor Suietov. 3083 3084Example Code and Data Size: These are the sizes for the OS-independent 3085acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3086debug version of the code includes the debug output trace mechanism and has 3087a much larger code and data size. 3088 3089 Previous Release: 3090 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3091 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3092 Current Release: 3093 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3094 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 3095 3096 30972) iASL Compiler/Disassembler and Tools: 3098 3099Fixed a compilation problem with the pre-defined Resource Descriptor field 3100names where an "object does not exist" error could be incorrectly generated 3101if the parent ResourceTemplate pathname places the template within a 3102different namespace scope than the current scope. (BZ 7212) 3103 3104Fixed a problem where the compiler could hang after syntax errors detected 3105in an ElseIf construct. (BZ 453) 3106 3107Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 3108operator. An incorrect output filename was produced when this parameter was 3109a null string (""). Now, the original input filename is used as the AML 3110output filename, with an ".aml" extension. 3111 3112Implemented a generic batch command mode for the AcpiExec utility (execute 3113any AML debugger command) (Valery Podrezov). 3114 3115---------------------------------------- 311612 September 2006. Summary of changes for version 20060912: 3117 31181) ACPI CA Core Subsystem: 3119 3120Enhanced the implementation of the "serialized mode" of the interpreter 3121(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 3122specified, instead of creating a serialization semaphore per control method, 3123the interpreter lock is simply no longer released before a blocking 3124operation during control method execution. This effectively makes the AML 3125Interpreter single-threaded. The overhead of a semaphore per-method is 3126eliminated. 3127 3128Fixed a regression where an error was no longer emitted if a control method 3129attempts to create 2 objects of the same name. This once again returns 3130AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 3131will dynamically serialize the control method to possible prevent future 3132errors. (BZ 440) 3133 3134Integrated a fix for a problem with PCI Express HID detection in the PCI 3135Config Space setup procedure. (BZ 7145) 3136 3137Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 3138AcpiHwInitialize function - the FADT registers are now validated when the 3139table is loaded. 3140 3141Added two new warnings during FADT verification - 1) if the FADT is larger 3142than the largest known FADT version, and 2) if there is a mismatch between a 314332-bit block address and the 64-bit X counterpart (when both are non-zero.) 3144 3145Example Code and Data Size: These are the sizes for the OS-independent 3146acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3147debug version of the code includes the debug output trace mechanism and has 3148a much larger code and data size. 3149 3150 Previous Release: 3151 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3152 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3153 Current Release: 3154 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 3155 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 3156 3157 31582) iASL Compiler/Disassembler and Tools: 3159 3160Fixed a problem with the implementation of the Switch() operator where the 3161temporary variable was declared too close to the actual Switch, instead of 3162at method level. This could cause a problem if the Switch() operator is 3163within a while loop, causing an error on the second iteration. (BZ 460) 3164 3165Disassembler - fix for error emitted for unknown type for target of scope 3166operator. Now, ignore it and continue. 3167 3168Disassembly of an FADT now verifies the input FADT and reports any errors 3169found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 3170 3171Disassembly of raw data buffers with byte initialization data now prefixes 3172each output line with the current buffer offset. 3173 3174Disassembly of ASF! table now includes all variable-length data fields at 3175the end of some of the subtables. 3176 3177The disassembler now emits a comment if a buffer appears to be a 3178ResourceTemplate, but cannot be disassembled as such because the EndTag does 3179not appear at the very end of the buffer. 3180 3181AcpiExec - Added the "-t" command line option to enable the serialized mode 3182of the AML interpreter. 3183 3184---------------------------------------- 318531 August 2006. Summary of changes for version 20060831: 3186 31871) ACPI CA Core Subsystem: 3188 3189Miscellaneous fixes for the Table Manager: 3190- Correctly initialize internal common FADT for all 64-bit "X" fields 3191- Fixed a couple table mapping issues during table load 3192- Fixed a couple alignment issues for IA64 3193- Initialize input array to zero in AcpiInitializeTables 3194- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 3195AcpiGetTableByIndex 3196 3197Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 3198immediately disabled to prevent the waking GPE from firing again and to 3199prevent other wake GPEs from interrupting the wake process. 3200 3201Added the AcpiGpeCount global that tracks the number of processed GPEs, to 3202be used for debugging systems with a large number of ACPI interrupts. 3203 3204Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 3205both the ACPICA headers and the disassembler. 3206 3207Example Code and Data Size: These are the sizes for the OS-independent 3208acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3209debug version of the code includes the debug output trace mechanism and has 3210a much larger code and data size. 3211 3212 Previous Release: 3213 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3214 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3215 Current Release: 3216 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 3217 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 3218 3219 32202) iASL Compiler/Disassembler and Tools: 3221 3222Disassembler support for the DMAR ACPI table. 3223 3224---------------------------------------- 322523 August 2006. Summary of changes for version 20060823: 3226 32271) ACPI CA Core Subsystem: 3228 3229The Table Manager component has been completely redesigned and 3230reimplemented. The new design is much simpler, and reduces the overall code 3231and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 3232now possible to obtain the ACPI tables very early during kernel 3233initialization, even before dynamic memory management is initialized. 3234(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 3235 3236Obsolete ACPICA interfaces: 3237 3238- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 3239time). 3240- AcpiLoadTable: Not needed. 3241- AcpiUnloadTable: Not needed. 3242 3243New ACPICA interfaces: 3244 3245- AcpiInitializeTables: Must be called before the table manager can be used. 3246- AcpiReallocateRootTable: Used to transfer the root table to dynamically 3247allocated memory after it becomes available. 3248- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 3249in the RSDT/XSDT. 3250 3251Other ACPICA changes: 3252 3253- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 3254AcpiOsUnmapMemory to free this mapping. 3255- AcpiGetTable returns the actual mapped table. The mapping is managed 3256internally and must not be deleted by the caller. Use of this interface 3257causes no additional dynamic memory allocation. 3258- AcpiFindRootPointer: Support for physical addressing has been eliminated, 3259it appeared to be unused. 3260- The interface to AcpiOsMapMemory has changed to be consistent with the 3261other allocation interfaces. 3262- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 3263parameters. 3264- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 3265bit platforms. Was previously 64 bits on all platforms. 3266- The interface to the ACPI Global Lock acquire/release macros have changed 3267slightly since ACPICA no longer keeps a local copy of the FACS with a 3268constructed pointer to the actual global lock. 3269 3270Porting to the new table manager: 3271 3272- AcpiInitializeTables: Must be called once, and can be called anytime 3273during the OS initialization process. It allows the host to specify an area 3274of memory to be used to store the internal version of the RSDT/XSDT (root 3275table). This allows the host to access ACPI tables before memory management 3276is initialized and running. 3277- AcpiReallocateRootTable: Can be called after memory management is running 3278to copy the root table to a dynamically allocated array, freeing up the 3279scratch memory specified in the call to AcpiInitializeTables. 3280- AcpiSubsystemInitialize: This existing interface is independent of the 3281Table Manager, and does not have to be called before the Table Manager can 3282be used, it only must be called before the rest of ACPICA can be used. 3283- ACPI Tables: Some changes have been made to the names and structure of the 3284actbl.h and actbl1.h header files and may require changes to existing code. 3285For example, bitfields have been completely removed because of their lack of 3286portability across C compilers. 3287- Update interfaces to the Global Lock acquire/release macros if local 3288versions are used. (see acwin.h) 3289 3290Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 3291 3292New files: tbfind.c 3293 3294Example Code and Data Size: These are the sizes for the OS-independent 3295acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3296debug version of the code includes the debug output trace mechanism and has 3297a much larger code and data size. 3298 3299 Previous Release: 3300 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3301 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3302 Current Release: 3303 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3304 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3305 3306 33072) iASL Compiler/Disassembler and Tools: 3308 3309No changes for this release. 3310 3311---------------------------------------- 331221 July 2006. Summary of changes for version 20060721: 3313 33141) ACPI CA Core Subsystem: 3315 3316The full source code for the ASL test suite used to validate the iASL 3317compiler and the ACPICA core subsystem is being released with the ACPICA 3318source for the first time. The source is contained in a separate package and 3319consists of over 1100 files that exercise all ASL/AML operators. The package 3320should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3321Suietov) 3322 3323Completed a new design and implementation for support of the ACPI Global 3324Lock. On the OS side, the global lock is now treated as a standard AML 3325mutex. Previously, multiple OS threads could "acquire" the global lock 3326simultaneously. However, this could cause the BIOS to be starved out of the 3327lock - especially in cases such as the Embedded Controller driver where 3328there is a tight coupling between the OS and the BIOS. 3329 3330Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3331The Global Lock interrupt handler no longer queues the execution of a 3332separate thread to signal the global lock semaphore. Instead, the semaphore 3333is signaled directly from the interrupt handler. 3334 3335Implemented support within the AML interpreter for package objects that 3336contain a larger AML length (package list length) than the package element 3337count. In this case, the length of the package is truncated to match the 3338package element count. Some BIOS code apparently modifies the package length 3339on the fly, and this change supports this behavior. Provides compatibility 3340with the MS AML interpreter. (With assistance from Fiodor Suietov) 3341 3342Implemented a temporary fix for the BankValue parameter of a Bank Field to 3343support all constant values, now including the Zero and One opcodes. 3344Evaluation of this parameter must eventually be converted to a full TermArg 3345evaluation. A not-implemented error is now returned (temporarily) for non- 3346constant values for this parameter. 3347 3348Fixed problem reports (Fiodor Suietov) integrated: 3349- Fix for premature object deletion after CopyObject on Operation Region (BZ 3350350) 3351 3352Example Code and Data Size: These are the sizes for the OS-independent 3353acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3354debug version of the code includes the debug output trace mechanism and has 3355a much larger code and data size. 3356 3357 Previous Release: 3358 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3359 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3360 Current Release: 3361 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3362 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3363 3364 33652) iASL Compiler/Disassembler and Tools: 3366 3367No changes for this release. 3368 3369---------------------------------------- 337007 July 2006. Summary of changes for version 20060707: 3371 33721) ACPI CA Core Subsystem: 3373 3374Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3375that do not allow the initialization of address pointers within packed 3376structures - even though the hardware itself may support misaligned 3377transfers. Some of the debug data structures are packed by default to 3378minimize size. 3379 3380Added an error message for the case where AcpiOsGetThreadId() returns zero. 3381A non-zero value is required by the core ACPICA code to ensure the proper 3382operation of AML mutexes and recursive control methods. 3383 3384The DSDT is now the only ACPI table that determines whether the AML 3385interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3386the hooks for per-table 32/64 switching have been removed from the code. A 3387clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3388 3389Fixed a possible leak of an OwnerID in the error path of 3390AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3391deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3392when using the AcpiTbDeleteTablesByType interface (with assistance from 3393Lance Ortiz.) 3394 3395Fixed a problem with Serialized control methods where the semaphore 3396associated with the method could be over-signaled after multiple method 3397invocations. 3398 3399Fixed two issues with the locking of the internal namespace data structure. 3400Both the Unload() operator and AcpiUnloadTable interface now lock the 3401namespace during the namespace deletion associated with the table unload 3402(with assistance from Linn Crosetto.) 3403 3404Fixed problem reports (Valery Podrezov) integrated: 3405- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3406 3407Fixed problem reports (Fiodor Suietov) integrated: 3408- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3409- On Address Space handler deletion, needless deactivation call (BZ 374) 3410- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3411- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3412(BZ 376) 3413- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3414- Minimum Length of RSDT should be validated (BZ 379) 3415- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3416Handler (BZ (380) 3417- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3418(BZ 381) 3419 3420Example Code and Data Size: These are the sizes for the OS-independent 3421acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3422debug version of the code includes the debug output trace mechanism and has 3423a much larger code and data size. 3424 3425 Previous Release: 3426 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3427 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3428 Current Release: 3429 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3430 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3431 3432 34332) iASL Compiler/Disassembler and Tools: 3434 3435Fixed problem reports: 3436Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3437436) 3438 3439---------------------------------------- 344023 June 2006. Summary of changes for version 20060623: 3441 34421) ACPI CA Core Subsystem: 3443 3444Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3445allows the type to be customized to the host OS for improved efficiency 3446(since a spinlock is usually a very small object.) 3447 3448Implemented support for "ignored" bits in the ACPI registers. According to 3449the ACPI specification, these bits should be preserved when writing the 3450registers via a read/modify/write cycle. There are 3 bits preserved in this 3451manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3452 3453Implemented the initial deployment of new OSL mutex interfaces. Since some 3454host operating systems have separate mutex and semaphore objects, this 3455feature was requested. The base code now uses mutexes (and the new mutex 3456interfaces) wherever a binary semaphore was used previously. However, for 3457the current release, the mutex interfaces are defined as macros to map them 3458to the existing semaphore interfaces. Therefore, no OSL changes are required 3459at this time. (See acpiosxf.h) 3460 3461Fixed several problems with the support for the control method SyncLevel 3462parameter. The SyncLevel now works according to the ACPI specification and 3463in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3464is a property of the executing thread. Mutual exclusion for control methods 3465is now implemented with a mutex instead of a semaphore. 3466 3467Fixed three instances of the use of the C shift operator in the bitfield 3468support code (exfldio.c) to avoid the use of a shift value larger than the 3469target data width. The behavior of C compilers is undefined in this case and 3470can cause unpredictable results, and therefore the case must be detected and 3471avoided. (Fiodor Suietov) 3472 3473Added an info message whenever an SSDT or OEM table is loaded dynamically 3474via the Load() or LoadTable() ASL operators. This should improve debugging 3475capability since it will show exactly what tables have been loaded (beyond 3476the tables present in the RSDT/XSDT.) 3477 3478Example Code and Data Size: These are the sizes for the OS-independent 3479acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3480debug version of the code includes the debug output trace mechanism and has 3481a much larger code and data size. 3482 3483 Previous Release: 3484 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3485 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3486 Current Release: 3487 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3488 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3489 3490 34912) iASL Compiler/Disassembler and Tools: 3492 3493No changes for this release. 3494 3495---------------------------------------- 349608 June 2006. Summary of changes for version 20060608: 3497 34981) ACPI CA Core Subsystem: 3499 3500Converted the locking mutex used for the ACPI hardware to a spinlock. This 3501change should eliminate all problems caused by attempting to acquire a 3502semaphore at interrupt level, and it means that all ACPICA external 3503interfaces that directly access the ACPI hardware can be safely called from 3504interrupt level. OSL code that implements the semaphore interfaces should be 3505able to eliminate any workarounds for being called at interrupt level. 3506 3507Fixed a regression introduced in 20060526 where the ACPI device 3508initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3509did not have an optional _INI method. 3510 3511Fixed an IndexField issue where a write to the Data Register should be 3512limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3513Fiodor Suietov) 3514 3515Fixed problem reports (Valery Podrezov) integrated: 3516- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3517 3518Fixed problem reports (Fiodor Suietov) integrated: 3519- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3520 3521Removed four global mutexes that were obsolete and were no longer being 3522used. 3523 3524Example Code and Data Size: These are the sizes for the OS-independent 3525acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3526debug version of the code includes the debug output trace mechanism and has 3527a much larger code and data size. 3528 3529 Previous Release: 3530 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3531 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3532 Current Release: 3533 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3534 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3535 3536 35372) iASL Compiler/Disassembler and Tools: 3538 3539Fixed a fault when using -g option (get tables from registry) on Windows 3540machines. 3541 3542Fixed problem reports integrated: 3543- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3544- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3545Suietov) 3546- Global table revision override (-r) is ignored (BZ 413) 3547 3548---------------------------------------- 354926 May 2006. Summary of changes for version 20060526: 3550 35511) ACPI CA Core Subsystem: 3552 3553Restructured, flattened, and simplified the internal interfaces for 3554namespace object evaluation - resulting in smaller code, less CPU stack use, 3555and fewer interfaces. (With assistance from Mikhail Kouzmich) 3556 3557Fixed a problem with the CopyObject operator where the first parameter was 3558not typed correctly for the parser, interpreter, compiler, and disassembler. 3559Caused various errors and unexpected behavior. 3560 3561Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3562produced incorrect results with some C compilers. Since the behavior of C 3563compilers when the shift value is larger than the datatype width is 3564apparently not well defined, the interpreter now detects this condition and 3565simply returns zero as expected in all such cases. (BZ 395) 3566 3567Fixed problem reports (Valery Podrezov) integrated: 3568- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3569- Allow interpreter to handle nested method declarations (BZ 5361) 3570 3571Fixed problem reports (Fiodor Suietov) integrated: 3572- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3573- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3574- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3575- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3576- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3577- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3578- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3579- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3580- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3581- Status of the Global Initialization Handler call not used (BZ 366) 3582- Incorrect object parameter to Global Initialization Handler (BZ 367) 3583 3584Example Code and Data Size: These are the sizes for the OS-independent 3585acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3586debug version of the code includes the debug output trace mechanism and has 3587a much larger code and data size. 3588 3589 Previous Release: 3590 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3591 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3592 Current Release: 3593 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3594 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3595 3596 35972) iASL Compiler/Disassembler and Tools: 3598 3599Modified the parser to allow the names IO, DMA, and IRQ to be used as 3600namespace identifiers with no collision with existing resource descriptor 3601macro names. This provides compatibility with other ASL compilers and is 3602most useful for disassembly/recompilation of existing tables without parse 3603errors. (With assistance from Thomas Renninger) 3604 3605Disassembler: fixed an incorrect disassembly problem with the 3606DataTableRegion and CopyObject operators. Fixed a possible fault during 3607disassembly of some Alias operators. 3608 3609---------------------------------------- 361012 May 2006. Summary of changes for version 20060512: 3611 36121) ACPI CA Core Subsystem: 3613 3614Replaced the AcpiOsQueueForExecution interface with a new interface named 3615AcpiOsExecute. The major difference is that the new interface does not have 3616a Priority parameter, this appeared to be useless and has been replaced by a 3617Type parameter. The Type tells the host what type of execution is being 3618requested, such as global lock handler, notify handler, GPE handler, etc. 3619This allows the host to queue and execute the request as appropriate for the 3620request type, possibly using different work queues and different priorities 3621for the various request types. This enables fixes for multithreading 3622deadlock problems such as BZ #5534, and will require changes to all existing 3623OS interface layers. (Alexey Starikovskiy and Bob Moore) 3624 3625Fixed a possible memory leak associated with the support for the so-called 3626"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3627Suietov) 3628 3629Fixed a problem with the Load() operator where a table load from an 3630operation region could overwrite an internal table buffer by up to 7 bytes 3631and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3632 3633Example Code and Data Size: These are the sizes for the OS-independent 3634acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3635debug version of the code includes the debug output trace mechanism and has 3636a much larger code and data size. 3637 3638 Previous Release: 3639 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3640 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3641 Current Release: 3642 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3643 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3644 3645 3646 36472) iASL Compiler/Disassembler and Tools: 3648 3649Disassembler: Implemented support to cross reference the internal namespace 3650and automatically generate ASL External() statements for symbols not defined 3651within the current table being disassembled. This will simplify the 3652disassembly and recompilation of interdependent tables such as SSDTs since 3653these statements will no longer have to be added manually. 3654 3655Disassembler: Implemented experimental support to automatically detect 3656invocations of external control methods and generate appropriate External() 3657statements. This is problematic because the AML cannot be correctly parsed 3658until the number of arguments for each control method is known. Currently, 3659standalone method invocations and invocations as the source operand of a 3660Store() statement are supported. 3661 3662Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3663LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3664LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3665more readable and likely closer to the original ASL source. 3666 3667---------------------------------------- 366821 April 2006. Summary of changes for version 20060421: 3669 36701) ACPI CA Core Subsystem: 3671 3672Removed a device initialization optimization introduced in 20051216 where 3673the _STA method was not run unless an _INI was also present for the same 3674device. This optimization could cause problems because it could allow _INI 3675methods to be run within a not-present device subtree. (If a not-present 3676device had no _INI, _STA would not be run, the not-present status would not 3677be discovered, and the children of the device would be incorrectly 3678traversed.) 3679 3680Implemented a new _STA optimization where namespace subtrees that do not 3681contain _INI are identified and ignored during device initialization. 3682Selectively running _STA can significantly improve boot time on large 3683machines (with assistance from Len Brown.) 3684 3685Implemented support for the device initialization case where the returned 3686_STA flags indicate a device not-present but functioning. In this case, _INI 3687is not run, but the device children are examined for presence, as per the 3688ACPI specification. 3689 3690Implemented an additional change to the IndexField support in order to 3691conform to MS behavior. The value written to the Index Register is not 3692simply a byte offset, it is a byte offset in units of the access width of 3693the parent Index Field. (Fiodor Suietov) 3694 3695Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3696interface is called during the creation of all AML operation regions, and 3697allows the host OS to exert control over what addresses it will allow the 3698AML code to access. Operation Regions whose addresses are disallowed will 3699cause a runtime exception when they are actually accessed (will not affect 3700or abort table loading.) See oswinxf or osunixxf for an example 3701implementation. 3702 3703Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3704interface allows the host OS to match the various "optional" 3705interface/behavior strings for the _OSI predefined control method as 3706appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3707for an example implementation. 3708 3709Restructured and corrected various problems in the exception handling code 3710paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3711(with assistance from Takayoshi Kochi.) 3712 3713Modified the Linux source converter to ignore quoted string literals while 3714converting identifiers from mixed to lower case. This will correct problems 3715with the disassembler and other areas where such strings must not be 3716modified. 3717 3718The ACPI_FUNCTION_* macros no longer require quotes around the function 3719name. This allows the Linux source converter to convert the names, now that 3720the converter ignores quoted strings. 3721 3722Example Code and Data Size: These are the sizes for the OS-independent 3723acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3724debug version of the code includes the debug output trace mechanism and has 3725a much larger code and data size. 3726 3727 Previous Release: 3728 3729 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3730 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3731 Current Release: 3732 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3733 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3734 3735 37362) iASL Compiler/Disassembler and Tools: 3737 3738Implemented 3 new warnings for iASL, and implemented multiple warning levels 3739(w2 flag). 3740 37411) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3742WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3743check for the possible timeout, a warning is issued. 3744 37452) Useless operators: If an ASL operator does not specify an optional target 3746operand and it also does not use the function return value from the 3747operator, a warning is issued since the operator effectively does nothing. 3748 37493) Unreferenced objects: If a namespace object is created, but never 3750referenced, a warning is issued. This is a warning level 2 since there are 3751cases where this is ok, such as when a secondary table is loaded that uses 3752the unreferenced objects. Even so, care is taken to only flag objects that 3753don't look like they will ever be used. For example, the reserved methods 3754(starting with an underscore) are usually not referenced because it is 3755expected that the OS will invoke them. 3756 3757---------------------------------------- 375831 March 2006. Summary of changes for version 20060331: 3759 37601) ACPI CA Core Subsystem: 3761 3762Implemented header file support for the following additional ACPI tables: 3763ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3764all current and known ACPI tables are now defined in the ACPICA headers and 3765are available for use by device drivers and other software. 3766 3767Implemented support to allow tables that contain ACPI names with invalid 3768characters to be loaded. Previously, this would cause the table load to 3769fail, but since there are several known cases of such tables on existing 3770machines, this change was made to enable ACPI support for them. Also, this 3771matches the behavior of the Microsoft ACPI implementation. 3772 3773Fixed a couple regressions introduced during the memory optimization in the 377420060317 release. The namespace node definition required additional 3775reorganization and an internal datatype that had been changed to 8-bit was 3776restored to 32-bit. (Valery Podrezov) 3777 3778Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3779could be passed through to AcpiOsReleaseObject which is unexpected. Such 3780null pointers are now trapped and ignored, matching the behavior of the 3781previous implementation before the deployment of AcpiOsReleaseObject. 3782(Valery Podrezov, Fiodor Suietov) 3783 3784Fixed a memory mapping leak during the deletion of a SystemMemory operation 3785region where a cached memory mapping was not deleted. This became a 3786noticeable problem for operation regions that are defined within frequently 3787used control methods. (Dana Meyers) 3788 3789Reorganized the ACPI table header files into two main files: one for the 3790ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3791ACPI tables that are consumed by the drivers and other software. The various 3792FADT definitions were merged into one common section and three different 3793tables (ACPI 1.0, 1.0+, and 2.0) 3794 3795Example Code and Data Size: These are the sizes for the OS-independent 3796acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3797debug version of the code includes the debug output trace mechanism and has 3798a much larger code and data size. 3799 3800 Previous Release: 3801 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3802 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3803 Current Release: 3804 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3805 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3806 3807 38082) iASL Compiler/Disassembler and Tools: 3809 3810Disassembler: Implemented support to decode and format all non-AML ACPI 3811tables (tables other than DSDTs and SSDTs.) This includes the new tables 3812added to the ACPICA headers, therefore all current and known ACPI tables are 3813supported. 3814 3815Disassembler: The change to allow ACPI names with invalid characters also 3816enables the disassembly of such tables. Invalid characters within names are 3817changed to '*' to make the name printable; the iASL compiler will still 3818generate an error for such names, however, since this is an invalid ACPI 3819character. 3820 3821Implemented an option for AcpiXtract (-a) to extract all tables found in the 3822input file. The default invocation extracts only the DSDTs and SSDTs. 3823 3824Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3825makefile for the AcpiXtract utility. 3826 3827---------------------------------------- 382817 March 2006. Summary of changes for version 20060317: 3829 38301) ACPI CA Core Subsystem: 3831 3832Implemented the use of a cache object for all internal namespace nodes. 3833Since there are about 1000 static nodes in a typical system, this will 3834decrease memory use for cache implementations that minimize per-allocation 3835overhead (such as a slab allocator.) 3836 3837Removed the reference count mechanism for internal namespace nodes, since it 3838was deemed unnecessary. This reduces the size of each namespace node by 3839about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3840and 32 bytes for the 64-bit case. 3841 3842Optimized several internal data structures to reduce object size on 64-bit 3843platforms by packing data within the 64-bit alignment. This includes the 3844frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3845instances corresponding to the namespace objects. 3846 3847Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3848and "Windows 2006". 3849 3850Split the allocation tracking mechanism out to a separate file, from 3851utalloc.c to uttrack.c. This mechanism appears to be only useful for 3852application-level code. Kernels may wish to not include uttrack.c in 3853distributions. 3854 3855Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3856code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3857macros.) 3858 3859Code and Data Size: These are the sizes for the acpica.lib produced by the 3860Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3861driver or OSPM code. The debug version of the code includes the debug output 3862trace mechanism and has a much larger code and data size. Note that these 3863values will vary depending on the efficiency of the compiler and the 3864compiler options used during generation. 3865 3866 Previous Release: 3867 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3868 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3869 Current Release: 3870 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3871 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3872 3873 38742) iASL Compiler/Disassembler and Tools: 3875 3876Implemented an ANSI C version of the acpixtract utility. This version will 3877automatically extract the DSDT and all SSDTs from the input acpidump text 3878file and dump the binary output to separate files. It can also display a 3879summary of the input file including the headers for each table found and 3880will extract any single ACPI table, with any signature. (See 3881source/tools/acpixtract) 3882 3883---------------------------------------- 388410 March 2006. Summary of changes for version 20060310: 3885 38861) ACPI CA Core Subsystem: 3887 3888Tagged all external interfaces to the subsystem with the new 3889ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3890kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3891macro. The default definition is NULL. 3892 3893Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3894This allows the host to define this as necessary to simplify kernel 3895integration. The default definition is ACPI_NATIVE_UINT. 3896 3897Fixed two interpreter problems related to error processing, the deletion of 3898objects, and placing invalid pointers onto the internal operator result 3899stack. BZ 6028, 6151 (Valery Podrezov) 3900 3901Increased the reference count threshold where a warning is emitted for large 3902reference counts in order to eliminate unnecessary warnings on systems with 3903large namespaces (especially 64-bit.) Increased the value from 0x400 to 39040x800. 3905 3906Due to universal disagreement as to the meaning of the 'c' in the calloc() 3907function, the ACPI_MEM_CALLOCATE macro has been renamed to 3908ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3909ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3910ACPI_FREE. 3911 3912Code and Data Size: These are the sizes for the acpica.lib produced by the 3913Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3914driver or OSPM code. The debug version of the code includes the debug output 3915trace mechanism and has a much larger code and data size. Note that these 3916values will vary depending on the efficiency of the compiler and the 3917compiler options used during generation. 3918 3919 Previous Release: 3920 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3921 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3922 Current Release: 3923 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3924 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3925 3926 39272) iASL Compiler/Disassembler: 3928 3929Disassembler: implemented support for symbolic resource descriptor 3930references. If a CreateXxxxField operator references a fixed offset within a 3931resource descriptor, a name is assigned to the descriptor and the offset is 3932translated to the appropriate resource tag and pathname. The addition of 3933this support brings the disassembled code very close to the original ASL 3934source code and helps eliminate run-time errors when the disassembled code 3935is modified (and recompiled) in such a way as to invalidate the original 3936fixed offsets. 3937 3938Implemented support for a Descriptor Name as the last parameter to the ASL 3939Register() macro. This parameter was inadvertently left out of the ACPI 3940specification, and will be added for ACPI 3.0b. 3941 3942Fixed a problem where the use of the "_OSI" string (versus the full path 3943"\_OSI") caused an internal compiler error. ("No back ptr to op") 3944 3945Fixed a problem with the error message that occurs when an invalid string is 3946used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3947The correct message is now displayed. 3948 3949---------------------------------------- 395017 February 2006. Summary of changes for version 20060217: 3951 39521) ACPI CA Core Subsystem: 3953 3954Implemented a change to the IndexField support to match the behavior of the 3955Microsoft AML interpreter. The value written to the Index register is now a 3956byte offset, no longer an index based upon the width of the Data register. 3957This should fix IndexField problems seen on some machines where the Data 3958register is not exactly one byte wide. The ACPI specification will be 3959clarified on this point. 3960 3961Fixed a problem where several resource descriptor types could overrun the 3962internal descriptor buffer due to size miscalculation: VendorShort, 3963VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3964affect all platforms. 3965 3966Fixed a problem where individual resource descriptors were misaligned within 3967the internal buffer, causing alignment faults on IA64 platforms. 3968 3969Code and Data Size: These are the sizes for the acpica.lib produced by the 3970Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3971driver or OSPM code. The debug version of the code includes the debug output 3972trace mechanism and has a much larger code and data size. Note that these 3973values will vary depending on the efficiency of the compiler and the 3974compiler options used during generation. 3975 3976 Previous Release: 3977 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3978 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3979 Current Release: 3980 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3981 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3982 3983 39842) iASL Compiler/Disassembler: 3985 3986Implemented support for new reserved names: _WDG and _WED are Microsoft 3987extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3988defined method (Throttling Depth Limit.) 3989 3990Fixed a problem where a zero-length VendorShort or VendorLong resource 3991descriptor was incorrectly emitted as a descriptor of length one. 3992 3993---------------------------------------- 399410 February 2006. Summary of changes for version 20060210: 3995 39961) ACPI CA Core Subsystem: 3997 3998Removed a couple of extraneous ACPI_ERROR messages that appeared during 3999normal execution. These became apparent after the conversion from 4000ACPI_DEBUG_PRINT. 4001 4002Fixed a problem where the CreateField operator could hang if the BitIndex or 4003NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 4004 4005Fixed a problem where a DeRefOf operation on a buffer object incorrectly 4006failed with an exception. This also fixes a couple of related RefOf and 4007DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 4008 4009Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 4010AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 40115480) 4012 4013Implemented a memory cleanup at the end of the execution of each iteration 4014of an AML While() loop, preventing the accumulation of outstanding objects. 4015(Valery Podrezov, BZ 5427) 4016 4017Eliminated a chunk of duplicate code in the object resolution code. (Valery 4018Podrezov, BZ 5336) 4019 4020Fixed several warnings during the 64-bit code generation. 4021 4022The AcpiSrc source code conversion tool now inserts one line of whitespace 4023after an if() statement that is followed immediately by a comment, improving 4024readability of the Linux code. 4025 4026Code and Data Size: The current and previous library sizes for the core 4027subsystem are shown below. These are the code and data sizes for the 4028acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4029values do not include any ACPI driver or OSPM code. The debug version of the 4030code includes the debug output trace mechanism and has a much larger code 4031and data size. Note that these values will vary depending on the efficiency 4032of the compiler and the compiler options used during generation. 4033 4034 Previous Release: 4035 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4036 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4037 Current Release: 4038 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 4039 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 4040 4041 40422) iASL Compiler/Disassembler: 4043 4044Fixed a problem with the disassembly of a BankField operator with a complex 4045expression for the BankValue parameter. 4046 4047---------------------------------------- 404827 January 2006. Summary of changes for version 20060127: 4049 40501) ACPI CA Core Subsystem: 4051 4052Implemented support in the Resource Manager to allow unresolved namestring 4053references within resource package objects for the _PRT method. This support 4054is in addition to the previously implemented unresolved reference support 4055within the AML parser. If the interpreter slack mode is enabled, these 4056unresolved references will be passed through to the caller as a NULL package 4057entry. 4058 4059Implemented and deployed new macros and functions for error and warning 4060messages across the subsystem. These macros are simpler and generate less 4061code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 4062ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 4063macros remain defined to allow ACPI drivers time to migrate to the new 4064macros. 4065 4066Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 4067Acquire/Release Lock OSL interfaces. 4068 4069Fixed a problem where Alias ASL operators are sometimes not correctly 4070resolved, in both the interpreter and the iASL compiler. 4071 4072Fixed several problems with the implementation of the ConcatenateResTemplate 4073ASL operator. As per the ACPI specification, zero length buffers are now 4074treated as a single EndTag. One-length buffers always cause a fatal 4075exception. Non-zero length buffers that do not end with a full 2-byte EndTag 4076cause a fatal exception. 4077 4078Fixed a possible structure overwrite in the AcpiGetObjectInfo external 4079interface. (With assistance from Thomas Renninger) 4080 4081Code and Data Size: The current and previous library sizes for the core 4082subsystem are shown below. These are the code and data sizes for the 4083acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4084values do not include any ACPI driver or OSPM code. The debug version of the 4085code includes the debug output trace mechanism and has a much larger code 4086and data size. Note that these values will vary depending on the efficiency 4087of the compiler and the compiler options used during generation. 4088 4089 Previous Release: 4090 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4091 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4092 Current Release: 4093 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 4094 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 4095 4096 40972) iASL Compiler/Disassembler: 4098 4099Fixed an internal error that was generated for any forward references to ASL 4100Alias objects. 4101 4102---------------------------------------- 410313 January 2006. Summary of changes for version 20060113: 4104 41051) ACPI CA Core Subsystem: 4106 4107Added 2006 copyright to all module headers and signons. This affects 4108virtually every file in the ACPICA core subsystem, iASL compiler, and the 4109utilities. 4110 4111Enhanced the ACPICA error reporting in order to simplify user migration to 4112the non-debug version of ACPICA. Replaced all instances of the 4113ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 4114levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 4115respectively. This preserves all error and warning messages in the non-debug 4116version of the ACPICA code (this has been referred to as the "debug lite" 4117option.) Over 200 cases were converted to create a total of over 380 4118error/warning messages across the ACPICA code. This increases the code and 4119data size of the default non-debug version of the code somewhat (about 13K), 4120but all error/warning reporting may be disabled if desired (and code 4121eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 4122configuration option. The size of the debug version of ACPICA remains about 4123the same. 4124 4125Fixed a memory leak within the AML Debugger "Set" command. One object was 4126not properly deleted for every successful invocation of the command. 4127 4128Code and Data Size: The current and previous library sizes for the core 4129subsystem are shown below. These are the code and data sizes for the 4130acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4131values do not include any ACPI driver or OSPM code. The debug version of the 4132code includes the debug output trace mechanism and has a much larger code 4133and data size. Note that these values will vary depending on the efficiency 4134of the compiler and the compiler options used during generation. 4135 4136 Previous Release: 4137 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4138 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4139 Current Release: 4140 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 4141 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 4142 4143 41442) iASL Compiler/Disassembler: 4145 4146The compiler now officially supports the ACPI 3.0a specification that was 4147released on December 30, 2005. (Specification is available at www.acpi.info) 4148 4149---------------------------------------- 415016 December 2005. Summary of changes for version 20051216: 4151 41521) ACPI CA Core Subsystem: 4153 4154Implemented optional support to allow unresolved names within ASL Package 4155objects. A null object is inserted in the package when a named reference 4156cannot be located in the current namespace. Enabled via the interpreter 4157slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 4158that contain such code. 4159 4160Implemented an optimization to the initialization sequence that can improve 4161boot time. During ACPI device initialization, the _STA method is now run if 4162and only if the _INI method exists. The _STA method is used to determine if 4163the device is present; An _INI can only be run if _STA returns present, but 4164it is a waste of time to run the _STA method if the _INI does not exist. 4165(Prototype and assistance from Dong Wei) 4166 4167Implemented use of the C99 uintptr_t for the pointer casting macros if it is 4168available in the current compiler. Otherwise, the default (void *) cast is 4169used as before. 4170 4171Fixed some possible memory leaks found within the execution path of the 4172Break, Continue, If, and CreateField operators. (Valery Podrezov) 4173 4174Fixed a problem introduced in the 20051202 release where an exception is 4175generated during method execution if a control method attempts to declare 4176another method. 4177 4178Moved resource descriptor string constants that are used by both the AML 4179disassembler and AML debugger to the common utilities directory so that 4180these components are independent. 4181 4182Implemented support in the AcpiExec utility (-e switch) to globally ignore 4183exceptions during control method execution (method is not aborted.) 4184 4185Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 4186generation. 4187 4188Code and Data Size: The current and previous library sizes for the core 4189subsystem are shown below. These are the code and data sizes for the 4190acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4191values do not include any ACPI driver or OSPM code. The debug version of the 4192code includes the debug output trace mechanism and has a much larger code 4193and data size. Note that these values will vary depending on the efficiency 4194of the compiler and the compiler options used during generation. 4195 4196 Previous Release: 4197 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4198 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4199 Current Release: 4200 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 4201 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 4202 4203 42042) iASL Compiler/Disassembler: 4205 4206Fixed a problem where a CPU stack overflow fault could occur if a recursive 4207method call was made from within a Return statement. 4208 4209---------------------------------------- 421002 December 2005. Summary of changes for version 20051202: 4211 42121) ACPI CA Core Subsystem: 4213 4214Modified the parsing of control methods to no longer create namespace 4215objects during the first pass of the parse. Objects are now created only 4216during the execute phase, at the moment the namespace creation operator is 4217encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 4218should eliminate ALREADY_EXISTS exceptions seen on some machines where 4219reentrant control methods are protected by an AML mutex. The mutex will now 4220correctly block multiple threads from attempting to create the same object 4221more than once. 4222 4223Increased the number of available Owner Ids for namespace object tracking 4224from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 4225some machines with a large number of ACPI tables (either static or dynamic). 4226 4227Fixed a problem with the AcpiExec utility where a fault could occur when the 4228-b switch (batch mode) is used. 4229 4230Enhanced the namespace dump routine to output the owner ID for each 4231namespace object. 4232 4233Code and Data Size: The current and previous library sizes for the core 4234subsystem are shown below. These are the code and data sizes for the 4235acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4236values do not include any ACPI driver or OSPM code. The debug version of the 4237code includes the debug output trace mechanism and has a much larger code 4238and data size. Note that these values will vary depending on the efficiency 4239of the compiler and the compiler options used during generation. 4240 4241 Previous Release: 4242 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4243 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4244 Current Release: 4245 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4246 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 4247 4248 42492) iASL Compiler/Disassembler: 4250 4251Fixed a parse error during compilation of certain Switch/Case constructs. To 4252simplify the parse, the grammar now allows for multiple Default statements 4253and this error is now detected and flagged during the analysis phase. 4254 4255Disassembler: The disassembly now includes the contents of the original 4256table header within a comment at the start of the file. This includes the 4257name and version of the original ASL compiler. 4258 4259---------------------------------------- 426017 November 2005. Summary of changes for version 20051117: 4261 42621) ACPI CA Core Subsystem: 4263 4264Fixed a problem in the AML parser where the method thread count could be 4265decremented below zero if any errors occurred during the method parse phase. 4266This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 4267This also fixed a related regression with the mechanism that detects and 4268corrects methods that cannot properly handle reentrancy (related to the 4269deployment of the new OwnerId mechanism.) 4270 4271Eliminated the pre-parsing of control methods (to detect errors) during 4272table load. Related to the problem above, this was causing unwind issues if 4273any errors occurred during the parse, and it seemed to be overkill. A table 4274load should not be aborted if there are problems with any single control 4275method, thus rendering this feature rather pointless. 4276 4277Fixed a problem with the new table-driven resource manager where an internal 4278buffer overflow could occur for small resource templates. 4279 4280Implemented a new external interface, AcpiGetVendorResource. This interface 4281will find and return a vendor-defined resource descriptor within a _CRS or 4282_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 4283 4284Removed the length limit (200) on string objects as per the upcoming ACPI 42853.0A specification. This affects the following areas of the interpreter: 1) 4286any implicit conversion of a Buffer to a String, 2) a String object result 4287of the ASL Concatentate operator, 3) the String object result of the ASL 4288ToString operator. 4289 4290Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 4291on a semaphore object would incorrectly timeout. This allows the 4292multithreading features of the AcpiExec utility to work properly under 4293Windows. 4294 4295Updated the Linux makefiles for the iASL compiler and AcpiExec to include 4296the recently added file named "utresrc.c". 4297 4298Code and Data Size: The current and previous library sizes for the core 4299subsystem are shown below. These are the code and data sizes for the 4300acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4301values do not include any ACPI driver or OSPM code. The debug version of the 4302code includes the debug output trace mechanism and has a much larger code 4303and data size. Note that these values will vary depending on the efficiency 4304of the compiler and the compiler options used during generation. 4305 4306 Previous Release: 4307 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4308 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4309 Current Release: 4310 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4311 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4312 4313 43142) iASL Compiler/Disassembler: 4315 4316Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4317specification. For the iASL compiler, this means that string literals within 4318the source ASL can be of any length. 4319 4320Enhanced the listing output to dump the AML code for resource descriptors 4321immediately after the ASL code for each descriptor, instead of in a block at 4322the end of the entire resource template. 4323 4324Enhanced the compiler debug output to dump the entire original parse tree 4325constructed during the parse phase, before any transforms are applied to the 4326tree. The transformed tree is dumped also. 4327 4328---------------------------------------- 432902 November 2005. Summary of changes for version 20051102: 4330 43311) ACPI CA Core Subsystem: 4332 4333Modified the subsystem initialization sequence to improve GPE support. The 4334GPE initialization has been split into two parts in order to defer execution 4335of the _PRW methods (Power Resources for Wake) until after the hardware is 4336fully initialized and the SCI handler is installed. This allows the _PRW 4337methods to access fields protected by the Global Lock. This will fix systems 4338where a NO_GLOBAL_LOCK exception has been seen during initialization. 4339 4340Converted the ACPI internal object disassemble and display code within the 4341AML debugger to fully table-driven operation, reducing code size and 4342increasing maintainability. 4343 4344Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4345in the 20051021 release. 4346 4347Implemented support for "local" internal ACPI object types within the 4348debugger "Object" command and the AcpiWalkNamespace external interfaces. 4349These local types include RegionFields, BankFields, IndexFields, Alias, and 4350reference objects. 4351 4352Moved common AML resource handling code into a new file, "utresrc.c". This 4353code is shared by both the Resource Manager and the AML Debugger. 4354 4355Code and Data Size: The current and previous library sizes for the core 4356subsystem are shown below. These are the code and data sizes for the 4357acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4358values do not include any ACPI driver or OSPM code. The debug version of the 4359code includes the debug output trace mechanism and has a much larger code 4360and data size. Note that these values will vary depending on the efficiency 4361of the compiler and the compiler options used during generation. 4362 4363 Previous Release: 4364 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4365 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4366 Current Release: 4367 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4368 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4369 4370 43712) iASL Compiler/Disassembler: 4372 4373Fixed a problem with very large initializer lists (more than 4000 elements) 4374for both Buffer and Package objects where the parse stack could overflow. 4375 4376Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4377characters within comment fields. The scan is now always performed and is no 4378longer optional, detecting invalid characters within a source file 4379immediately rather than during the parse phase or later. 4380 4381Enhanced the ASL grammar definition to force early reductions on all list- 4382style grammar elements so that the overall parse stack usage is greatly 4383reduced. This should improve performance and reduce the possibility of parse 4384stack overflow. 4385 4386Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4387with the addition of a %expected statement, the compiler generates from 4388source with no warnings. 4389 4390Fixed a possible segment fault in the disassembler if the input filename 4391does not contain a "dot" extension (Thomas Renninger). 4392 4393---------------------------------------- 439421 October 2005. Summary of changes for version 20051021: 4395 43961) ACPI CA Core Subsystem: 4397 4398Implemented support for the EM64T and other x86-64 processors. This 4399essentially entails recognizing that these processors support non-aligned 4400memory transfers. Previously, all 64-bit processors were assumed to lack 4401hardware support for non-aligned transfers. 4402 4403Completed conversion of the Resource Manager to nearly full table-driven 4404operation. Specifically, the resource conversion code (convert AML to 4405internal format and the reverse) and the debug code to dump internal 4406resource descriptors are fully table-driven, reducing code and data size and 4407improving maintainability. 4408 4409The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4410on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4411Alexey Starikovskiy) 4412 4413Implemented support within the resource conversion code for the Type- 4414Specific byte within the various ACPI 3.0 *WordSpace macros. 4415 4416Fixed some issues within the resource conversion code for the type-specific 4417flags for both Memory and I/O address resource descriptors. For Memory, 4418implemented support for the MTP and TTP flags. For I/O, split the TRS and 4419TTP flags into two separate fields. 4420 4421Code and Data Size: The current and previous library sizes for the core 4422subsystem are shown below. These are the code and data sizes for the 4423acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4424values do not include any ACPI driver or OSPM code. The debug version of the 4425code includes the debug output trace mechanism and has a much larger code 4426and data size. Note that these values will vary depending on the efficiency 4427of the compiler and the compiler options used during generation. 4428 4429 Previous Release: 4430 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4431 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4432 Current Release: 4433 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4434 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4435 4436 4437 44382) iASL Compiler/Disassembler: 4439 4440Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4441corresponding ResourceSource string was not also present in a resource 4442descriptor declaration. This restriction caused problems with existing 4443AML/ASL code that includes the Index byte without the string. When such AML 4444was disassembled, it could not be compiled without modification. Further, 4445the modified code created a resource template with a different size than the 4446original, breaking code that used fixed offsets into the resource template 4447buffer. 4448 4449Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4450byte. This byte is now emitted if present so that the exact AML can be 4451reproduced when the disassembled code is recompiled. 4452 4453Improved comments and text alignment for the resource descriptor code 4454emitted by the disassembler. 4455 4456Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4457Register() resource descriptor. 4458 4459---------------------------------------- 446030 September 2005. Summary of changes for version 20050930: 4461 44621) ACPI CA Core Subsystem: 4463 4464Completed a major overhaul of the Resource Manager code - specifically, 4465optimizations in the area of the AML/internal resource conversion code. The 4466code has been optimized to simplify and eliminate duplicated code, CPU stack 4467use has been decreased by optimizing function parameters and local 4468variables, and naming conventions across the manager have been standardized 4469for clarity and ease of maintenance (this includes function, parameter, 4470variable, and struct/typedef names.) The update may force changes in some 4471driver code, depending on how resources are handled by the host OS. 4472 4473All Resource Manager dispatch and information tables have been moved to a 4474single location for clarity and ease of maintenance. One new file was 4475created, named "rsinfo.c". 4476 4477The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4478guarantee that the argument is not evaluated twice, making them less prone 4479to macro side-effects. However, since there exists the possibility of 4480additional stack use if a particular compiler cannot optimize them (such as 4481in the debug generation case), the original macros are optionally available. 4482Note that some invocations of the return_VALUE macro may now cause size 4483mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4484eliminate these. (From Randy Dunlap) 4485 4486Implemented a new mechanism to enable debug tracing for individual control 4487methods. A new external interface, AcpiDebugTrace, is provided to enable 4488this mechanism. The intent is to allow the host OS to easily enable and 4489disable tracing for problematic control methods. This interface can be 4490easily exposed to a user or debugger interface if desired. See the file 4491psxface.c for details. 4492 4493AcpiUtCallocate will now return a valid pointer if a length of zero is 4494specified - a length of one is used and a warning is issued. This matches 4495the behavior of AcpiUtAllocate. 4496 4497Code and Data Size: The current and previous library sizes for the core 4498subsystem are shown below. These are the code and data sizes for the 4499acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4500values do not include any ACPI driver or OSPM code. The debug version of the 4501code includes the debug output trace mechanism and has a much larger code 4502and data size. Note that these values will vary depending on the efficiency 4503of the compiler and the compiler options used during generation. 4504 4505 Previous Release: 4506 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4507 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4508 Current Release: 4509 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4510 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4511 4512 45132) iASL Compiler/Disassembler: 4514 4515A remark is issued if the effective compile-time length of a package or 4516buffer is zero. Previously, this was a warning. 4517 4518---------------------------------------- 451916 September 2005. Summary of changes for version 20050916: 4520 45211) ACPI CA Core Subsystem: 4522 4523Fixed a problem within the Resource Manager where support for the Generic 4524Register descriptor was not fully implemented. This descriptor is now fully 4525recognized, parsed, disassembled, and displayed. 4526 4527Completely restructured the Resource Manager code to utilize table-driven 4528dispatch and lookup, eliminating many of the large switch() statements. This 4529reduces overall subsystem code size and code complexity. Affects the 4530resource parsing and construction, disassembly, and debug dump output. 4531 4532Cleaned up and restructured the debug dump output for all resource 4533descriptors. Improved readability of the output and reduced code size. 4534 4535Fixed a problem where changes to internal data structures caused the 4536optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4537 4538Code and Data Size: The current and previous library sizes for the core 4539subsystem are shown below. These are the code and data sizes for the 4540acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4541values do not include any ACPI driver or OSPM code. The debug version of the 4542code includes the debug output trace mechanism and has a much larger code 4543and data size. Note that these values will vary depending on the efficiency 4544of the compiler and the compiler options used during generation. 4545 4546 Previous Release: 4547 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4548 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4549 Current Release: 4550 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4551 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4552 4553 45542) iASL Compiler/Disassembler: 4555 4556Updated the disassembler to automatically insert an EndDependentFn() macro 4557into the ASL stream if this macro is missing in the original AML code, 4558simplifying compilation of the resulting ASL module. 4559 4560Fixed a problem in the disassembler where a disassembled ResourceSource 4561string (within a large resource descriptor) was not surrounded by quotes and 4562not followed by a comma, causing errors when the resulting ASL module was 4563compiled. Also, escape sequences within a ResourceSource string are now 4564handled correctly (especially "\\") 4565 4566---------------------------------------- 456702 September 2005. Summary of changes for version 20050902: 4568 45691) ACPI CA Core Subsystem: 4570 4571Fixed a problem with the internal Owner ID allocation and deallocation 4572mechanisms for control method execution and recursive method invocation. 4573This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4574messages seen on some systems. Recursive method invocation depth is 4575currently limited to 255. (Alexey Starikovskiy) 4576 4577Completely eliminated all vestiges of support for the "module-level 4578executable code" until this support is fully implemented and debugged. This 4579should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4580some systems that invoke this support. 4581 4582Fixed a problem within the resource manager code where the transaction flags 4583for a 64-bit address descriptor were handled incorrectly in the type- 4584specific flag byte. 4585 4586Consolidated duplicate code within the address descriptor resource manager 4587code, reducing overall subsystem code size. 4588 4589Fixed a fault when using the AML debugger "disassemble" command to 4590disassemble individual control methods. 4591 4592Removed references to the "release_current" directory within the Unix 4593release package. 4594 4595Code and Data Size: The current and previous core subsystem library sizes 4596are shown below. These are the code and data sizes for the acpica.lib 4597produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4598include any ACPI driver or OSPM code. The debug version of the code includes 4599the debug output trace mechanism and has a much larger code and data size. 4600Note that these values will vary depending on the efficiency of the compiler 4601and the compiler options used during generation. 4602 4603 Previous Release: 4604 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4605 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4606 Current Release: 4607 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4608 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4609 4610 46112) iASL Compiler/Disassembler: 4612 4613Implemented an error check for illegal duplicate values in the interrupt and 4614dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4615Interrupt(). 4616 4617Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4618too many values in the interrupt list (16 max) and invalid values in the 4619list (range 0 - 15) 4620 4621The maximum length string literal within an ASL file is now restricted to 4622200 characters as per the ACPI specification. 4623 4624Fixed a fault when using the -ln option (generate namespace listing). 4625 4626Implemented an error check to determine if a DescriptorName within a 4627resource descriptor has already been used within the current scope. 4628 4629---------------------------------------- 463015 August 2005. Summary of changes for version 20050815: 4631 46321) ACPI CA Core Subsystem: 4633 4634Implemented a full bytewise compare to determine if a table load request is 4635attempting to load a duplicate table. The compare is performed if the table 4636signatures and table lengths match. This will allow different tables with 4637the same OEM Table ID and revision to be loaded - probably against the ACPI 4638specification, but discovered in the field nonetheless. 4639 4640Added the changes.txt logfile to each of the zipped release packages. 4641 4642Code and Data Size: Current and previous core subsystem library sizes are 4643shown below. These are the code and data sizes for the acpica.lib produced 4644by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4645any ACPI driver or OSPM code. The debug version of the code includes the 4646debug output trace mechanism and has a much larger code and data size. Note 4647that these values will vary depending on the efficiency of the compiler and 4648the compiler options used during generation. 4649 4650 Previous Release: 4651 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4652 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4653 Current Release: 4654 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4655 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4656 4657 46582) iASL Compiler/Disassembler: 4659 4660Fixed a problem where incorrect AML code could be generated for Package 4661objects if optimization is disabled (via the -oa switch). 4662 4663Fixed a problem with where incorrect AML code is generated for variable- 4664length packages when the package length is not specified and the number of 4665initializer values is greater than 255. 4666 4667 4668---------------------------------------- 466929 July 2005. Summary of changes for version 20050729: 4670 46711) ACPI CA Core Subsystem: 4672 4673Implemented support to ignore an attempt to install/load a particular ACPI 4674table more than once. Apparently there exists BIOS code that repeatedly 4675attempts to load the same SSDT upon certain events. With assistance from 4676Venkatesh Pallipadi. 4677 4678Restructured the main interface to the AML parser in order to correctly 4679handle all exceptional conditions. This will prevent leakage of the OwnerId 4680resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4681machines. With assistance from Alexey Starikovskiy. 4682 4683Support for "module level code" has been disabled in this version due to a 4684number of issues that have appeared on various machines. The support can be 4685enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4686compilation. When the issues are fully resolved, the code will be enabled by 4687default again. 4688 4689Modified the internal functions for debug print support to define the 4690FunctionName parameter as a (const char *) for compatibility with compiler 4691built-in macros such as __FUNCTION__, etc. 4692 4693Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4694 4695Implemented support to display an object count summary for the AML Debugger 4696commands Object and Methods. 4697 4698Code and Data Size: Current and previous core subsystem library sizes are 4699shown below. These are the code and data sizes for the acpica.lib produced 4700by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4701any ACPI driver or OSPM code. The debug version of the code includes the 4702debug output trace mechanism and has a much larger code and data size. Note 4703that these values will vary depending on the efficiency of the compiler and 4704the compiler options used during generation. 4705 4706 Previous Release: 4707 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4708 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4709 Current Release: 4710 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4711 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4712 4713 47142) iASL Compiler/Disassembler: 4715 4716Fixed a regression that appeared in the 20050708 version of the compiler 4717where an error message was inadvertently emitted for invocations of the _OSI 4718reserved control method. 4719 4720---------------------------------------- 472108 July 2005. Summary of changes for version 20050708: 4722 47231) ACPI CA Core Subsystem: 4724 4725The use of the CPU stack in the debug version of the subsystem has been 4726considerably reduced. Previously, a debug structure was declared in every 4727function that used the debug macros. This structure has been removed in 4728favor of declaring the individual elements as parameters to the debug 4729functions. This reduces the cumulative stack use during nested execution of 4730ACPI function calls at the cost of a small increase in the code size of the 4731debug version of the subsystem. With assistance from Alexey Starikovskiy and 4732Len Brown. 4733 4734Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4735headers to define a macro that will return the current function name at 4736runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4737the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4738compiler-dependent header, the function name is saved on the CPU stack (one 4739pointer per function.) This mechanism is used because apparently there 4740exists no standard ANSI-C defined macro that that returns the function name. 4741 4742Redesigned and reimplemented the "Owner ID" mechanism used to track 4743namespace objects created/deleted by ACPI tables and control method 4744execution. A bitmap is now used to allocate and free the IDs, thus solving 4745the wraparound problem present in the previous implementation. The size of 4746the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4747Starikovskiy). 4748 4749Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4750flag definitions within the headers for the predefined ACPI tables. These 4751have been replaced by UINT8_BIT in order to increase the code portability of 4752the subsystem. If the use of UINT8 remains a problem, we may be forced to 4753eliminate bitfields entirely because of a lack of portability. 4754 4755Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4756is a frequently used function and this improvement increases the performance 4757of the entire subsystem (Alexey Starikovskiy). 4758 4759Fixed several possible memory leaks and the inverse - premature object 4760deletion (Alexey Starikovskiy). 4761 4762Code and Data Size: Current and previous core subsystem library sizes are 4763shown below. These are the code and data sizes for the acpica.lib produced 4764by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4765any ACPI driver or OSPM code. The debug version of the code includes the 4766debug output trace mechanism and has a much larger code and data size. Note 4767that these values will vary depending on the efficiency of the compiler and 4768the compiler options used during generation. 4769 4770 Previous Release: 4771 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4772 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4773 Current Release: 4774 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4775 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4776 4777---------------------------------------- 477824 June 2005. Summary of changes for version 20050624: 4779 47801) ACPI CA Core Subsystem: 4781 4782Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4783the host-defined cache object. This allows the OSL implementation to define 4784and type this object in any manner desired, simplifying the OSL 4785implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4786Linux, and should be defined in the OS-specific header file for other 4787operating systems as required. 4788 4789Changed the interface to AcpiOsAcquireObject to directly return the 4790requested object as the function return (instead of ACPI_STATUS.) This 4791change was made for performance reasons, since this is the purpose of the 4792interface in the first place. AcpiOsAcquireObject is now similar to the 4793AcpiOsAllocate interface. 4794 4795Implemented a new AML debugger command named Businfo. This command displays 4796information about all devices that have an associate _PRT object. The _ADR, 4797_HID, _UID, and _CID are displayed for these devices. 4798 4799Modified the initialization sequence in AcpiInitializeSubsystem to call the 4800OSL interface AcpiOslInitialize first, before any local initialization. This 4801change was required because the global initialization now calls OSL 4802interfaces. 4803 4804Enhanced the Dump command to display the entire contents of Package objects 4805(including all sub-objects and their values.) 4806 4807Restructured the code base to split some files because of size and/or 4808because the code logically belonged in a separate file. New files are listed 4809below. All makefiles and project files included in the ACPI CA release have 4810been updated. 4811 utilities/utcache.c /* Local cache interfaces */ 4812 utilities/utmutex.c /* Local mutex support */ 4813 utilities/utstate.c /* State object support */ 4814 interpreter/parser/psloop.c /* Main AML parse loop */ 4815 4816Code and Data Size: Current and previous core subsystem library sizes are 4817shown below. These are the code and data sizes for the acpica.lib produced 4818by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4819any ACPI driver or OSPM code. The debug version of the code includes the 4820debug output trace mechanism and has a much larger code and data size. Note 4821that these values will vary depending on the efficiency of the compiler and 4822the compiler options used during generation. 4823 4824 Previous Release: 4825 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4826 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4827 Current Release: 4828 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4829 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4830 4831 48322) iASL Compiler/Disassembler: 4833 4834Fixed a regression introduced in version 20050513 where the use of a Package 4835object within a Case() statement caused a compile time exception. The 4836original behavior has been restored (a Match() operator is emitted.) 4837 4838---------------------------------------- 483917 June 2005. Summary of changes for version 20050617: 4840 48411) ACPI CA Core Subsystem: 4842 4843Moved the object cache operations into the OS interface layer (OSL) to allow 4844the host OS to handle these operations if desired (for example, the Linux 4845OSL will invoke the slab allocator). This support is optional; the compile 4846time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4847code in the ACPI CA core. The new OSL interfaces are shown below. See 4848utalloc.c for an example implementation, and acpiosxf.h for the exact 4849interface definitions. With assistance from Alexey Starikovskiy. 4850 AcpiOsCreateCache 4851 AcpiOsDeleteCache 4852 AcpiOsPurgeCache 4853 AcpiOsAcquireObject 4854 AcpiOsReleaseObject 4855 4856Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4857and restore a flags parameter. This fits better with many OS lock models. 4858Note: the current execution state (interrupt handler or not) is no longer 4859passed to these interfaces. If necessary, the OSL must determine this state 4860by itself, a simple and fast operation. With assistance from Alexey 4861Starikovskiy. 4862 4863Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4864present if the revision of the RSDP was 2 or greater. According to the ACPI 4865specification, the XSDT is optional in all cases, and the table manager 4866therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4867Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4868only the RSDT. 4869 4870Fixed an interpreter problem with the Mid() operator in the case of an input 4871string where the resulting output string is of zero length. It now correctly 4872returns a valid, null terminated string object instead of a string object 4873with a null pointer. 4874 4875Fixed a problem with the control method argument handling to allow a store 4876to an Arg object that already contains an object of type Device. The Device 4877object is now correctly overwritten. Previously, an error was returned. 4878 4879 4880Enhanced the debugger Find command to emit object values in addition to the 4881found object pathnames. The output format is the same as the dump namespace 4882command. 4883 4884Enhanced the debugger Set command. It now has the ability to set the value 4885of any Named integer object in the namespace (Previously, only method locals 4886and args could be set.) 4887 4888Code and Data Size: Current and previous core subsystem library sizes are 4889shown below. These are the code and data sizes for the acpica.lib produced 4890by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4891any ACPI driver or OSPM code. The debug version of the code includes the 4892debug output trace mechanism and has a much larger code and data size. Note 4893that these values will vary depending on the efficiency of the compiler and 4894the compiler options used during generation. 4895 4896 Previous Release: 4897 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4898 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4899 Current Release: 4900 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4901 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4902 4903 49042) iASL Compiler/Disassembler: 4905 4906Fixed a regression in the disassembler where if/else/while constructs were 4907output incorrectly. This problem was introduced in the previous release 4908(20050526). This problem also affected the single-step disassembly in the 4909debugger. 4910 4911Fixed a problem where compiling the reserved _OSI method would randomly (but 4912rarely) produce compile errors. 4913 4914Enhanced the disassembler to emit compilable code in the face of incorrect 4915AML resource descriptors. If the optional ResourceSourceIndex is present, 4916but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4917disassembly. Otherwise, the resulting code cannot be compiled without 4918errors. 4919 4920---------------------------------------- 492126 May 2005. Summary of changes for version 20050526: 4922 49231) ACPI CA Core Subsystem: 4924 4925Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4926the module level (not within a control method.) These opcodes are executed 4927exactly once at the time the table is loaded. This type of code was legal up 4928until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4929order to provide backwards compatibility with earlier BIOS implementations. 4930This eliminates the "Encountered executable code at module level" warning 4931that was previously generated upon detection of such code. 4932 4933Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4934inadvertently be generated during the lookup of namespace objects in the 4935second pass parse of ACPI tables and control methods. It appears that this 4936problem could occur during the resolution of forward references to namespace 4937objects. 4938 4939Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4940corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4941allows the deadlock detection debug code to be compiled out in the normal 4942case, improving mutex performance (and overall subsystem performance) 4943considerably. 4944 4945Implemented a handful of miscellaneous fixes for possible memory leaks on 4946error conditions and error handling control paths. These fixes were 4947suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4948 4949Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4950to prevent a fault in this error case. 4951 4952Code and Data Size: Current and previous core subsystem library sizes are 4953shown below. These are the code and data sizes for the acpica.lib produced 4954by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4955any ACPI driver or OSPM code. The debug version of the code includes the 4956debug output trace mechanism and has a much larger code and data size. Note 4957that these values will vary depending on the efficiency of the compiler and 4958the compiler options used during generation. 4959 4960 Previous Release: 4961 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4962 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4963 Current Release: 4964 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4965 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4966 4967 49682) iASL Compiler/Disassembler: 4969 4970Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4971the module level (not within a control method.) These operators will be 4972executed once at the time the table is loaded. This type of code was legal 4973up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4974compiler in order to provide backwards compatibility with earlier BIOS ASL 4975code. 4976 4977The ACPI integer width (specified via the table revision ID or the -r 4978override, 32 or 64 bits) is now used internally during compile-time constant 4979folding to ensure that constants are truncated to 32 bits if necessary. 4980Previously, the revision ID value was only emitted in the AML table header. 4981 4982An error message is now generated for the Mutex and Method operators if the 4983SyncLevel parameter is outside the legal range of 0 through 15. 4984 4985Fixed a problem with the Method operator ParameterTypes list handling (ACPI 49863.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4987The actual underlying implementation of method argument typechecking is 4988still under development, however. 4989 4990---------------------------------------- 499113 May 2005. Summary of changes for version 20050513: 4992 49931) ACPI CA Core Subsystem: 4994 4995Implemented support for PCI Express root bridges -- added support for device 4996PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4997 4998The interpreter now automatically truncates incoming 64-bit constants to 32 4999bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 5000also affects the iASL compiler constant folding. (Note: as per below, the 5001iASL compiler no longer allows 64-bit constants within 32-bit tables.) 5002 5003Fixed a problem where string and buffer objects with "static" pointers 5004(pointers to initialization data within an ACPI table) were not handled 5005consistently. The internal object copy operation now always copies the data 5006to a newly allocated buffer, regardless of whether the source object is 5007static or not. 5008 5009Fixed a problem with the FromBCD operator where an implicit result 5010conversion was improperly performed while storing the result to the target 5011operand. Since this is an "explicit conversion" operator, the implicit 5012conversion should never be performed on the output. 5013 5014Fixed a problem with the CopyObject operator where a copy to an existing 5015named object did not always completely overwrite the existing object stored 5016at name. Specifically, a buffer-to-buffer copy did not delete the existing 5017buffer. 5018 5019Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 5020structs for consistency. 5021 5022Code and Data Size: Current and previous core subsystem library sizes are 5023shown below. These are the code and data sizes for the acpica.lib produced 5024by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5025any ACPI driver or OSPM code. The debug version of the code includes the 5026debug output trace mechanism and has a much larger code and data size. Note 5027that these values will vary depending on the efficiency of the compiler and 5028the compiler options used during generation. 5029 5030 Previous Release: 5031 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5032 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5033 Current Release: (Same sizes) 5034 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5035 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5036 5037 50382) iASL Compiler/Disassembler: 5039 5040The compiler now emits a warning if an attempt is made to generate a 64-bit 5041integer constant from within a 32-bit ACPI table (Revision < 2). The integer 5042is truncated to 32 bits. 5043 5044Fixed a problem with large package objects: if the static length of the 5045package is greater than 255, the "variable length package" opcode is 5046emitted. Previously, this caused an error. This requires an update to the 5047ACPI spec, since it currently (incorrectly) states that packages larger than 5048255 elements are not allowed. 5049 5050The disassembler now correctly handles variable length packages and packages 5051larger than 255 elements. 5052 5053---------------------------------------- 505408 April 2005. Summary of changes for version 20050408: 5055 50561) ACPI CA Core Subsystem: 5057 5058Fixed three cases in the interpreter where an "index" argument to an ASL 5059function was still (internally) 32 bits instead of the required 64 bits. 5060This was the Index argument to the Index, Mid, and Match operators. 5061 5062The "strupr" function is now permanently local (AcpiUtStrupr), since this is 5063not a POSIX-defined function and not present in most kernel-level C 5064libraries. All references to the C library strupr function have been removed 5065from the headers. 5066 5067Completed the deployment of static functions/prototypes. All prototypes with 5068the static attribute have been moved from the headers to the owning C file. 5069 5070Implemented an extract option (-e) for the AcpiBin utility (AML binary 5071utility). This option allows the utility to extract individual ACPI tables 5072from the output of AcpiDmp. It provides the same functionality of the 5073acpixtract.pl perl script without the worry of setting the correct perl 5074options. AcpiBin runs on Windows and has not yet been generated/validated in 5075the Linux/Unix environment (but should be soon). 5076 5077Updated and fixed the table dump option for AcpiBin (-d). This option 5078converts a single ACPI table to a hex/ascii file, similar to the output of 5079AcpiDmp. 5080 5081Code and Data Size: Current and previous core subsystem library sizes are 5082shown below. These are the code and data sizes for the acpica.lib produced 5083by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5084any ACPI driver or OSPM code. The debug version of the code includes the 5085debug output trace mechanism and has a much larger code and data size. Note 5086that these values will vary depending on the efficiency of the compiler and 5087the compiler options used during generation. 5088 5089 Previous Release: 5090 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5091 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5092 Current Release: 5093 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 5094 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 5095 5096 50972) iASL Compiler/Disassembler: 5098 5099Disassembler fix: Added a check to ensure that the table length found in the 5100ACPI table header within the input file is not longer than the actual input 5101file size. This indicates some kind of file or table corruption. 5102 5103---------------------------------------- 510429 March 2005. Summary of changes for version 20050329: 5105 51061) ACPI CA Core Subsystem: 5107 5108An error is now generated if an attempt is made to create a Buffer Field of 5109length zero (A CreateField with a length operand of zero.) 5110 5111The interpreter now issues a warning whenever executable code at the module 5112level is detected during ACPI table load. This will give some idea of the 5113prevalence of this type of code. 5114 5115Implemented support for references to named objects (other than control 5116methods) within package objects. 5117 5118Enhanced package object output for the debug object. Package objects are now 5119completely dumped, showing all elements. 5120 5121Enhanced miscellaneous object output for the debug object. Any object can 5122now be written to the debug object (for example, a device object can be 5123written, and the type of the object will be displayed.) 5124 5125The "static" qualifier has been added to all local functions across both the 5126core subsystem and the iASL compiler. 5127 5128The number of "long" lines (> 80 chars) within the source has been 5129significantly reduced, by about 1/3. 5130 5131Cleaned up all header files to ensure that all CA/iASL functions are 5132prototyped (even static functions) and the formatting is consistent. 5133 5134Two new header files have been added, acopcode.h and acnames.h. 5135 5136Removed several obsolete functions that were no longer used. 5137 5138Code and Data Size: Current and previous core subsystem library sizes are 5139shown below. These are the code and data sizes for the acpica.lib produced 5140by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5141any ACPI driver or OSPM code. The debug version of the code includes the 5142debug output trace mechanism and has a much larger code and data size. Note 5143that these values will vary depending on the efficiency of the compiler and 5144the compiler options used during generation. 5145 5146 Previous Release: 5147 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5148 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5149 Current Release: 5150 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 5151 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 5152 5153 5154 51552) iASL Compiler/Disassembler: 5156 5157Fixed a problem with the resource descriptor generation/support. For the 5158ResourceSourceIndex and the ResourceSource fields, both must be present, or 5159both must be not present - can't have one without the other. 5160 5161The compiler now returns non-zero from the main procedure if any errors have 5162occurred during the compilation. 5163 5164 5165---------------------------------------- 516609 March 2005. Summary of changes for version 20050309: 5167 51681) ACPI CA Core Subsystem: 5169 5170The string-to-buffer implicit conversion code has been modified again after 5171a change to the ACPI specification. In order to match the behavior of the 5172other major ACPI implementation, the target buffer is no longer truncated if 5173the source string is smaller than an existing target buffer. This change 5174requires an update to the ACPI spec, and should eliminate the recent 5175AE_AML_BUFFER_LIMIT issues. 5176 5177The "implicit return" support was rewritten to a new algorithm that solves 5178the general case. Rather than attempt to determine when a method is about to 5179exit, the result of every ASL operator is saved momentarily until the very 5180next ASL operator is executed. Therefore, no matter how the method exits, 5181there will always be a saved implicit return value. This feature is only 5182enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 5183AE_AML_NO_RETURN_VALUE errors when enabled. 5184 5185Implemented implicit conversion support for the predicate (operand) of the 5186If, Else, and While operators. String and Buffer arguments are automatically 5187converted to Integers. 5188 5189Changed the string-to-integer conversion behavior to match the new ACPI 5190errata: "If no integer object exists, a new integer is created. The ASCII 5191string is interpreted as a hexadecimal constant. Each string character is 5192interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 5193with the first character as the most significant digit, and ending with the 5194first non-hexadecimal character or end-of-string." This means that the first 5195non-hex character terminates the conversion and this is the code that was 5196changed. 5197 5198Fixed a problem where the ObjectType operator would fail (fault) when used 5199on an Index of a Package which pointed to a null package element. The 5200operator now properly returns zero (Uninitialized) in this case. 5201 5202Fixed a problem where the While operator used excessive memory by not 5203properly popping the result stack during execution. There was no memory leak 5204after execution, however. (Code provided by Valery Podrezov.) 5205 5206Fixed a problem where references to control methods within Package objects 5207caused the method to be invoked, instead of producing a reference object 5208pointing to the method. 5209 5210Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 5211improve performance and reduce code size. (Code provided by Alexey 5212Starikovskiy.) 5213 5214Code and Data Size: Current and previous core subsystem library sizes are 5215shown below. These are the code and data sizes for the acpica.lib produced 5216by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5217any ACPI driver or OSPM code. The debug version of the code includes the 5218debug output trace mechanism and has a much larger code and data size. Note 5219that these values will vary depending on the efficiency of the compiler and 5220the compiler options used during generation. 5221 5222 Previous Release: 5223 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5224 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5225 Current Release: 5226 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5227 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 5228 5229 52302) iASL Compiler/Disassembler: 5231 5232Fixed a problem with the Return operator with no arguments. Since the AML 5233grammar for the byte encoding requires an operand for the Return opcode, the 5234compiler now emits a Return(Zero) for this case. An ACPI specification 5235update has been written for this case. 5236 5237For tables other than the DSDT, namepath optimization is automatically 5238disabled. This is because SSDTs can be loaded anywhere in the namespace, the 5239compiler has no knowledge of where, and thus cannot optimize namepaths. 5240 5241Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 5242inadvertently omitted from the ACPI specification, and will require an 5243update to the spec. 5244 5245The source file scan for ASCII characters is now optional (-a). This change 5246was made because some vendors place non-ascii characters within comments. 5247However, the scan is simply a brute-force byte compare to ensure all 5248characters in the file are in the range 0x00 to 0x7F. 5249 5250Fixed a problem with the CondRefOf operator where the compiler was 5251inappropriately checking for the existence of the target. Since the point of 5252the operator is to check for the existence of the target at run-time, the 5253compiler no longer checks for the target existence. 5254 5255Fixed a problem where errors generated from the internal AML interpreter 5256during constant folding were not handled properly, causing a fault. 5257 5258Fixed a problem with overly aggressive range checking for the Stall 5259operator. The valid range (max 255) is now only checked if the operand is of 5260type Integer. All other operand types cannot be statically checked. 5261 5262Fixed a problem where control method references within the RefOf, DeRefOf, 5263and ObjectType operators were not treated properly. They are now treated as 5264actual references, not method invocations. 5265 5266Fixed and enhanced the "list namespace" option (-ln). This option was broken 5267a number of releases ago. 5268 5269Improved error handling for the Field, IndexField, and BankField operators. 5270The compiler now cleanly reports and recovers from errors in the field 5271component (FieldUnit) list. 5272 5273Fixed a disassembler problem where the optional ResourceDescriptor fields 5274TRS and TTP were not always handled correctly. 5275 5276Disassembler - Comments in output now use "//" instead of "/*" 5277 5278---------------------------------------- 527928 February 2005. Summary of changes for version 20050228: 5280 52811) ACPI CA Core Subsystem: 5282 5283Fixed a problem where the result of an Index() operator (an object 5284reference) must increment the reference count on the target object for the 5285life of the object reference. 5286 5287Implemented AML Interpreter and Debugger support for the new ACPI 3.0 5288Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 5289resource descriptors. 5290 5291Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 5292Space Descriptor" string, indicating interpreter support for the descriptors 5293above. 5294 5295Implemented header support for the new ACPI 3.0 FADT flag bits. 5296 5297Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 5298status/enable registers. 5299 5300Updated header support for the MADT processor local Apic struct and MADT 5301platform interrupt source struct for new ACPI 3.0 fields. 5302 5303Implemented header support for the SRAT and SLIT ACPI tables. 5304 5305Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5306at runtime. 5307 5308Code and Data Size: Current and previous core subsystem library sizes are 5309shown below. These are the code and data sizes for the acpica.lib produced 5310by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5311any ACPI driver or OSPM code. The debug version of the code includes the 5312debug output trace mechanism and has a much larger code and data size. Note 5313that these values will vary depending on the efficiency of the compiler and 5314the compiler options used during generation. 5315 5316 Previous Release: 5317 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5318 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5319 Current Release: 5320 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5321 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5322 5323 53242) iASL Compiler/Disassembler: 5325 5326Fixed a problem with the internal 64-bit String-to-integer conversion with 5327strings less than two characters long. 5328 5329Fixed a problem with constant folding where the result of the Index() 5330operator can not be considered a constant. This means that Index() cannot be 5331a type3 opcode and this will require an update to the ACPI specification. 5332 5333Disassembler: Implemented support for the TTP, MTP, and TRS resource 5334descriptor fields. These fields were inadvertently ignored and not output in 5335the disassembly of the resource descriptor. 5336 5337 5338 ---------------------------------------- 533911 February 2005. Summary of changes for version 20050211: 5340 53411) ACPI CA Core Subsystem: 5342 5343Implemented ACPI 3.0 support for implicit conversion within the Match() 5344operator. MatchObjects can now be of type integer, buffer, or string instead 5345of just type integer. Package elements are implicitly converted to the type 5346of the MatchObject. This change aligns the behavior of Match() with the 5347behavior of the other logical operators (LLess(), etc.) It also requires an 5348errata change to the ACPI specification as this support was intended for 5349ACPI 3.0, but was inadvertently omitted. 5350 5351Fixed a problem with the internal implicit "to buffer" conversion. Strings 5352that are converted to buffers will cause buffer truncation if the string is 5353smaller than the target buffer. Integers that are converted to buffers will 5354not cause buffer truncation, only zero extension (both as per the ACPI 5355spec.) The problem was introduced when code was added to truncate the 5356buffer, but this should not be performed in all cases, only the string case. 5357 5358Fixed a problem with the Buffer and Package operators where the interpreter 5359would get confused if two such operators were used as operands to an ASL 5360operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5361stack was not being popped after the execution of these operators, resulting 5362in an AE_NO_RETURN_VALUE exception. 5363 5364Fixed a problem with constructs of the form Store(Index(...),...). The 5365reference object returned from Index was inadvertently resolved to an actual 5366value. This problem was introduced in version 20050114 when the behavior of 5367Store() was modified to restrict the object types that can be used as the 5368source operand (to match the ACPI specification.) 5369 5370Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5371 5372Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5373 5374Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5375 5376Code and Data Size: Current and previous core subsystem library sizes are 5377shown below. These are the code and data sizes for the acpica.lib produced 5378by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5379any ACPI driver or OSPM code. The debug version of the code includes the 5380debug output trace mechanism and has a much larger code and data size. Note 5381that these values will vary depending on the efficiency of the compiler and 5382the compiler options used during generation. 5383 5384 Previous Release: 5385 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5386 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5387 Current Release: 5388 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5389 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5390 5391 53922) iASL Compiler/Disassembler: 5393 5394Fixed a code generation problem in the constant folding optimization code 5395where incorrect code was generated if a constant was reduced to a buffer 5396object (i.e., a reduced type 5 opcode.) 5397 5398Fixed a typechecking problem for the ToBuffer operator. Caused by an 5399incorrect return type in the internal opcode information table. 5400 5401---------------------------------------- 540225 January 2005. Summary of changes for version 20050125: 5403 54041) ACPI CA Core Subsystem: 5405 5406Fixed a recently introduced problem with the Global Lock where the 5407underlying semaphore was not created. This problem was introduced in 5408version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5409Acquire() operation on _GL. 5410 5411The local object cache is now optional, and is disabled by default. Both 5412AcpiExec and the iASL compiler enable the cache because they run in user 5413mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5414to enable the local cache. 5415 5416Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5417optional "implicit return" support where an error was returned if no return 5418object was expected, but one was implicitly returned. AE_OK is now returned 5419in this case and the implicitly returned object is deleted. 5420AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5421methods such as _STA and _INI where the return type is known up front. 5422 5423Fixed a few issues with the internal convert-to-integer code. It now returns 5424an error if an attempt is made to convert a null string, a string of only 5425blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5426and explicit conversion via the ToInteger() operator. 5427 5428The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5429not needed for normal operation and should increase the performance of the 5430entire subsystem. The code remains in case it is needed for debug purposes 5431again. 5432 5433The AcpiExec source and makefile are included in the Unix/Linux package for 5434the first time. 5435 5436Code and Data Size: Current and previous core subsystem library sizes are 5437shown below. These are the code and data sizes for the acpica.lib produced 5438by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5439any ACPI driver or OSPM code. The debug version of the code includes the 5440debug output trace mechanism and has a much larger code and data size. Note 5441that these values will vary depending on the efficiency of the compiler and 5442the compiler options used during generation. 5443 5444 Previous Release: 5445 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5446 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5447 Current Release: 5448 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5449 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5450 54512) iASL Compiler/Disassembler: 5452 5453Switch/Case support: A warning is now issued if the type of the Switch value 5454cannot be determined at compile time. For example, Switch(Arg0) will 5455generate the warning, and the type is assumed to be an integer. As per the 5456ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5457warning. 5458 5459Switch/Case support: Implemented support for buffer and string objects as 5460the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5461buffers and strings. 5462 5463Switch/Case support: The emitted code for the LEqual() comparisons now uses 5464the switch value as the first operand, not the second. The case value is now 5465the second operand, and this allows the case value to be implicitly 5466converted to the type of the switch value, not the other way around. 5467 5468Switch/Case support: Temporary variables are now emitted immediately within 5469the control method, not at the global level. This means that there are now 547036 temps available per-method, not 36 temps per-module as was the case with 5471the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5472 5473---------------------------------------- 547414 January 2005. Summary of changes for version 20050114: 5475 5476Added 2005 copyright to all module headers. This affects every module in 5477the core subsystem, iASL compiler, and the utilities. 5478 54791) ACPI CA Core Subsystem: 5480 5481Fixed an issue with the String-to-Buffer conversion code where the string 5482null terminator was not included in the buffer after conversion, but there 5483is existing ASL that assumes the string null terminator is included. This is 5484the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5485introduced in the previous version when the code was updated to correctly 5486set the converted buffer size as per the ACPI specification. The ACPI spec 5487is ambiguous and will be updated to specify that the null terminator must be 5488included in the converted buffer. This also affects the ToBuffer() ASL 5489operator. 5490 5491Fixed a problem with the Mid() ASL/AML operator where it did not work 5492correctly on Buffer objects. Newly created sub-buffers were not being marked 5493as initialized. 5494 5495 5496Fixed a problem in AcpiTbFindTable where incorrect string compares were 5497performed on the OemId and OemTableId table header fields. These fields are 5498not null terminated, so strncmp is now used instead of strcmp. 5499 5500Implemented a restriction on the Store() ASL/AML operator to align the 5501behavior with the ACPI specification. Previously, any object could be used 5502as the source operand. Now, the only objects that may be used are Integers, 5503Buffers, Strings, Packages, Object References, and DDB Handles. If 5504necessary, the original behavior can be restored by enabling the 5505EnableInterpreterSlack flag. 5506 5507Enhanced the optional "implicit return" support to allow an implicit return 5508value from methods that are invoked externally via the AcpiEvaluateObject 5509interface. This enables implicit returns from the _STA and _INI methods, 5510for example. 5511 5512Changed the Revision() ASL/AML operator to return the current version of the 5513AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5514the supported ACPI version (This is the function of the _REV method). 5515 5516Updated the _REV predefined method to return the currently supported version 5517of ACPI, now 3. 5518 5519Implemented batch mode option for the AcpiExec utility (-b). 5520 5521Code and Data Size: Current and previous core subsystem library sizes are 5522shown below. These are the code and data sizes for the acpica.lib produced 5523by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5524any ACPI driver or OSPM code. The debug version of the code includes the 5525debug output trace mechanism and has a much larger code and data size. Note 5526that these values will vary depending on the efficiency of the compiler and 5527the compiler options used during generation. 5528 5529 Previous Release: 5530 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5531 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5532 Current Release: 5533 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5534 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5535 5536---------------------------------------- 553710 December 2004. Summary of changes for version 20041210: 5538 5539ACPI 3.0 support is nearing completion in both the iASL compiler and the 5540ACPI CA core subsystem. 5541 55421) ACPI CA Core Subsystem: 5543 5544Fixed a problem in the ToDecimalString operator where the resulting string 5545length was incorrectly calculated. The length is now calculated exactly, 5546eliminating incorrect AE_STRING_LIMIT exceptions. 5547 5548Fixed a problem in the ToHexString operator to allow a maximum 200 character 5549string to be produced. 5550 5551Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5552routine where the length of the resulting buffer was not truncated to the 5553new size (if the target buffer already existed). 5554 5555Code and Data Size: Current and previous core subsystem library sizes are 5556shown below. These are the code and data sizes for the acpica.lib produced 5557by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5558any ACPI driver or OSPM code. The debug version of the code includes the 5559debug output trace mechanism and has a much larger code and data size. Note 5560that these values will vary depending on the efficiency of the compiler and 5561the compiler options used during generation. 5562 5563 Previous Release: 5564 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5565 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5566 Current Release: 5567 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5568 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5569 5570 55712) iASL Compiler/Disassembler: 5572 5573Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5574ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5575Includes support in the disassembler. 5576 5577Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5578AccessSize. 5579 5580Fixed a problem where the _HE resource name for the Interrupt macro was 5581referencing bit 0 instead of bit 1. 5582 5583Implemented check for maximum 255 interrupts in the Interrupt macro. 5584 5585Fixed a problem with the predefined resource descriptor names where 5586incorrect AML code was generated if the offset within the resource buffer 5587was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5588but did not update the surrounding package lengths. 5589 5590Changes to the Dma macro: All channels within the channel list must be in 5591the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5592optional (default is BusMaster). 5593 5594Implemented check for maximum 7 data bytes for the VendorShort macro. 5595 5596The ReadWrite parameter is now optional for the Memory32 and similar macros. 5597 5598---------------------------------------- 559903 December 2004. Summary of changes for version 20041203: 5600 56011) ACPI CA Core Subsystem: 5602 5603The low-level field insertion/extraction code (exfldio) has been completely 5604rewritten to eliminate unnecessary complexity, bugs, and boundary 5605conditions. 5606 5607Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5608operators where the input operand could be inadvertently deleted if no 5609conversion was necessary (e.g., if the input to ToInteger was an Integer 5610object.) 5611 5612Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5613exception code was returned if the resulting string would be > 200 chars. 5614AE_STRING_LIMIT is now returned. 5615 5616Fixed a problem with the Concatenate operator where AE_OK was always 5617returned, even if the operation failed. 5618 5619Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5620semaphores to be allocated. 5621 5622Code and Data Size: Current and previous core subsystem library sizes are 5623shown below. These are the code and data sizes for the acpica.lib produced 5624by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5625any ACPI driver or OSPM code. The debug version of the code includes the 5626debug output trace mechanism and has a much larger code and data size. Note 5627that these values will vary depending on the efficiency of the compiler and 5628the compiler options used during generation. 5629 5630 Previous Release: 5631 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5632 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5633 Current Release: 5634 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5635 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5636 5637 56382) iASL Compiler/Disassembler: 5639 5640Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5641recently introduced in 20041119. 5642 5643Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5644byte was inadvertently set to zero. 5645 5646---------------------------------------- 564719 November 2004. Summary of changes for version 20041119: 5648 56491) ACPI CA Core Subsystem: 5650 5651Fixed a problem in the internal ConvertToInteger routine where new integers 5652were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5653buffers and strings to integers. 5654 5655Implemented support to store a value to an Index() on a String object. This 5656is an ACPI 2.0 feature that had not yet been implemented. 5657 5658Implemented new behavior for storing objects to individual package elements 5659(via the Index() operator). The previous behavior was to invoke the implicit 5660conversion rules if an object was already present at the index. The new 5661behavior is to simply delete any existing object and directly store the new 5662object. Although the ACPI specification seems unclear on this subject, other 5663ACPI implementations behave in this manner. (This is the root of the 5664AE_BAD_HEX_CONSTANT issue.) 5665 5666Modified the RSDP memory scan mechanism to support the extended checksum for 5667ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5668RSDP signature is found with a valid checksum. 5669 5670Code and Data Size: Current and previous core subsystem library sizes are 5671shown below. These are the code and data sizes for the acpica.lib produced 5672by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5673any ACPI driver or OSPM code. The debug version of the code includes the 5674debug output trace mechanism and has a much larger code and data size. Note 5675that these values will vary depending on the efficiency of the compiler and 5676the compiler options used during generation. 5677 5678 Previous Release: 5679 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5680 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5681 Current Release: 5682 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5683 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5684 5685 56862) iASL Compiler/Disassembler: 5687 5688Fixed a missing semicolon in the aslcompiler.y file. 5689 5690---------------------------------------- 569105 November 2004. Summary of changes for version 20041105: 5692 56931) ACPI CA Core Subsystem: 5694 5695Implemented support for FADT revision 2. This was an interim table (between 5696ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5697 5698Implemented optional support to allow uninitialized LocalX and ArgX 5699variables in a control method. The variables are initialized to an Integer 5700object with a value of zero. This support is enabled by setting the 5701AcpiGbl_EnableInterpreterSlack flag to TRUE. 5702 5703Implemented support for Integer objects for the SizeOf operator. Either 4 5704or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5705depending on the parent table revision). 5706 5707Fixed a problem in the implementation of the SizeOf and ObjectType operators 5708where the operand was resolved to a value too early, causing incorrect 5709return values for some objects. 5710 5711Fixed some possible memory leaks during exceptional conditions. 5712 5713Code and Data Size: Current and previous core subsystem library sizes are 5714shown below. These are the code and data sizes for the acpica.lib produced 5715by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5716any ACPI driver or OSPM code. The debug version of the code includes the 5717debug output trace mechanism and has a much larger code and data size. Note 5718that these values will vary depending on the efficiency of the compiler and 5719the compiler options used during generation. 5720 5721 Previous Release: 5722 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5723 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5724 Current Release: 5725 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5726 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5727 5728 57292) iASL Compiler/Disassembler: 5730 5731Implemented support for all ACPI 3.0 reserved names and methods. 5732 5733Implemented all ACPI 3.0 grammar elements in the front-end, including 5734support for semicolons. 5735 5736Implemented the ACPI 3.0 Function() and ToUUID() macros 5737 5738Fixed a problem in the disassembler where a Scope() operator would not be 5739emitted properly if the target of the scope was in another table. 5740 5741---------------------------------------- 574215 October 2004. Summary of changes for version 20041015: 5743 5744Note: ACPI CA is currently undergoing an in-depth and complete formal 5745evaluation to test/verify the following areas. Other suggestions are 5746welcome. This will result in an increase in the frequency of releases and 5747the number of bug fixes in the next few months. 5748 - Functional tests for all ASL/AML operators 5749 - All implicit/explicit type conversions 5750 - Bit fields and operation regions 5751 - 64-bit math support and 32-bit-only "truncated" math support 5752 - Exceptional conditions, both compiler and interpreter 5753 - Dynamic object deletion and memory leaks 5754 - ACPI 3.0 support when implemented 5755 - External interfaces to the ACPI subsystem 5756 5757 57581) ACPI CA Core Subsystem: 5759 5760Fixed two alignment issues on 64-bit platforms - within debug statements in 5761AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5762field within the non-aligned ACPI generic address structure. 5763 5764Fixed a problem in the Increment and Decrement operators where incorrect 5765operand resolution could result in the inadvertent modification of the 5766original integer when the integer is passed into another method as an 5767argument and the arg is then incremented/decremented. 5768 5769Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5770BCD number were truncated during conversion. 5771 5772Fixed a problem in the ToDecimal operator where the length of the resulting 5773string could be set incorrectly too long if the input operand was a Buffer 5774object. 5775 5776Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5777within a buffer would prematurely terminate a compare between buffer 5778objects. 5779 5780Added a check for string overflow (>200 characters as per the ACPI 5781specification) during the Concatenate operator with two string operands. 5782 5783Code and Data Size: Current and previous core subsystem library sizes are 5784shown below. These are the code and data sizes for the acpica.lib produced 5785by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5786any ACPI driver or OSPM code. The debug version of the code includes the 5787debug output trace mechanism and has a much larger code and data size. Note 5788that these values will vary depending on the efficiency of the compiler and 5789the compiler options used during generation. 5790 5791 Previous Release: 5792 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5793 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5794 Current Release: 5795 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5796 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5797 5798 5799 58002) iASL Compiler/Disassembler: 5801 5802Allow the use of the ObjectType operator on uninitialized Locals and Args 5803(returns 0 as per the ACPI specification). 5804 5805Fixed a problem where the compiler would fault if there was a syntax error 5806in the FieldName of all of the various CreateXXXField operators. 5807 5808Disallow the use of lower case letters within the EISAID macro, as per the 5809ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5810U is an uppercase letter and N is a hex digit. 5811 5812 5813---------------------------------------- 581406 October 2004. Summary of changes for version 20041006: 5815 58161) ACPI CA Core Subsystem: 5817 5818Implemented support for the ACPI 3.0 Timer operator. This ASL function 5819implements a 64-bit timer with 100 nanosecond granularity. 5820 5821Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5822implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5823the timer with the best clock available. Also, it keeps the core subsystem 5824out of the clock handling business, since the host OS (usually) performs 5825this function. 5826 5827Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5828functions use a 64-bit address which is part of the packed ACPI Generic 5829Address Structure. Since the structure is non-aligned, the alignment macros 5830are now used to extract the address to a local variable before use. 5831 5832Fixed a problem where the ToInteger operator assumed all input strings were 5833hexadecimal. The operator now handles both decimal strings and hex strings 5834(prefixed with "0x"). 5835 5836Fixed a problem where the string length in the string object created as a 5837result of the internal ConvertToString procedure could be incorrect. This 5838potentially affected all implicit conversions and also the ToDecimalString 5839and ToHexString operators. 5840 5841Fixed two problems in the ToString operator. If the length parameter was 5842zero, an incorrect string object was created and the value of the input 5843length parameter was inadvertently changed from zero to Ones. 5844 5845Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5846resource macro was ignored. 5847 5848Simplified the interfaces to the internal division functions, reducing code 5849size and complexity. 5850 5851Code and Data Size: Current and previous core subsystem library sizes are 5852shown below. These are the code and data sizes for the acpica.lib produced 5853by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5854any ACPI driver or OSPM code. The debug version of the code includes the 5855debug output trace mechanism and has a much larger code and data size. Note 5856that these values will vary depending on the efficiency of the compiler and 5857the compiler options used during generation. 5858 5859 Previous Release: 5860 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5861 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5862 Current Release: 5863 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5864 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5865 5866 58672) iASL Compiler/Disassembler: 5868 5869Implemented support for the ACPI 3.0 Timer operator. 5870 5871Fixed a problem where the Default() operator was inadvertently ignored in a 5872Switch/Case block. This was a problem in the translation of the Switch 5873statement to If...Else pairs. 5874 5875Added support to allow a standalone Return operator, with no parentheses (or 5876operands). 5877 5878Fixed a problem with code generation for the ElseIf operator where the 5879translated Else...If parse tree was improperly constructed leading to the 5880loss of some code. 5881 5882---------------------------------------- 588322 September 2004. Summary of changes for version 20040922: 5884 58851) ACPI CA Core Subsystem: 5886 5887Fixed a problem with the implementation of the LNot() operator where "Ones" 5888was not returned for the TRUE case. Changed the code to return Ones instead 5889of (!Arg) which was usually 1. This change affects iASL constant folding for 5890this operator also. 5891 5892Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5893initialized properly -- Now zero the entire buffer in this case where the 5894buffer already exists. 5895 5896Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5897Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5898related code considerably. This will require changes/updates to all OS 5899interface layers (OSLs.) 5900 5901Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5902a system exception handler to be installed. This handler is invoked upon any 5903run-time exception that occurs during control method execution. 5904 5905Added support for the DSDT in AcpiTbFindTable. This allows the 5906DataTableRegion() operator to access the local copy of the DSDT. 5907 5908Code and Data Size: Current and previous core subsystem library sizes are 5909shown below. These are the code and data sizes for the acpica.lib produced 5910by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5911any ACPI driver or OSPM code. The debug version of the code includes the 5912debug output trace mechanism and has a much larger code and data size. Note 5913that these values will vary depending on the efficiency of the compiler and 5914the compiler options used during generation. 5915 5916 Previous Release: 5917 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5918 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5919 Current Release: 5920 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5921 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5922 5923 59242) iASL Compiler/Disassembler: 5925 5926Fixed a problem with constant folding and the LNot operator. LNot was 5927returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5928could result in the generation of an incorrect folded/reduced constant. 5929 5930End-Of-File is now allowed within a "//"-style comment. A parse error no 5931longer occurs if such a comment is at the very end of the input ASL source 5932file. 5933 5934Implemented the "-r" option to override the Revision in the table header. 5935The initial use of this option will be to simplify the evaluation of the AML 5936interpreter by allowing a single ASL source module to be compiled for either 593732-bit or 64-bit integers. 5938 5939 5940---------------------------------------- 594127 August 2004. Summary of changes for version 20040827: 5942 59431) ACPI CA Core Subsystem: 5944 5945- Implemented support for implicit object conversion in the non-numeric 5946logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5947LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5948the second operand is implicitly converted on the fly to match the type of 5949the first operand. For example: 5950 5951 LEqual (Source1, Source2) 5952 5953Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5954The data type of Source1 dictates the required type of Source2. Source2 is 5955implicitly converted if necessary to match the type of Source1. 5956 5957- Updated and corrected the behavior of the string conversion support. The 5958rules concerning conversion of buffers to strings (according to the ACPI 5959specification) are as follows: 5960 5961ToDecimalString - explicit byte-wise conversion of buffer to string of 5962decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5963conversion of buffer to string of hex values (0-FF) separated by commas. 5964ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5965copy with no transform except NULL terminated. Any other implicit buffer-to- 5966string conversion - byte-wise conversion of buffer to string of hex values 5967(0-FF) separated by spaces. 5968 5969- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5970 5971- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5972one byte too short in the case of a node in the root scope. This could 5973cause a fault during debug output. 5974 5975- Code and Data Size: Current and previous core subsystem library sizes are 5976shown below. These are the code and data sizes for the acpica.lib produced 5977by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5978any ACPI driver or OSPM code. The debug version of the code includes the 5979debug output trace mechanism and has a much larger code and data size. Note 5980that these values will vary depending on the efficiency of the compiler and 5981the compiler options used during generation. 5982 5983 Previous Release: 5984 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5985 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5986 Current Release: 5987 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5988 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5989 5990 59912) iASL Compiler/Disassembler: 5992 5993- Fixed a Linux generation error. 5994 5995 5996---------------------------------------- 599716 August 2004. Summary of changes for version 20040816: 5998 59991) ACPI CA Core Subsystem: 6000 6001Designed and implemented support within the AML interpreter for the so- 6002called "implicit return". This support returns the result of the last ASL 6003operation within a control method, in the absence of an explicit Return() 6004operator. A few machines depend on this behavior, even though it is not 6005explicitly supported by the ASL language. It is optional support that can 6006be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 6007 6008Removed support for the PCI_Config address space from the internal low level 6009hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 6010support was not used internally, and would not work correctly anyway because 6011the PCI bus number and segment number were not supported. There are 6012separate interfaces for PCI configuration space access because of the unique 6013interface. 6014 6015Code and Data Size: Current and previous core subsystem library sizes are 6016shown below. These are the code and data sizes for the acpica.lib produced 6017by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6018any ACPI driver or OSPM code. The debug version of the code includes the 6019debug output trace mechanism and has a much larger code and data size. Note 6020that these values will vary depending on the efficiency of the compiler and 6021the compiler options used during generation. 6022 6023 Previous Release: 6024 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6025 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6026 Current Release: 6027 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 6028 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 6029 6030 60312) iASL Compiler/Disassembler: 6032 6033Fixed a problem where constants in ASL expressions at the root level (not 6034within a control method) could be inadvertently truncated during code 6035generation. This problem was introduced in the 20040715 release. 6036 6037 6038---------------------------------------- 603915 July 2004. Summary of changes for version 20040715: 6040 60411) ACPI CA Core Subsystem: 6042 6043Restructured the internal HW GPE interfaces to pass/track the current state 6044of interrupts (enabled/disabled) in order to avoid possible deadlock and 6045increase flexibility of the interfaces. 6046 6047Implemented a "lexicographical compare" for String and Buffer objects within 6048the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 6049as per further clarification to the ACPI specification. Behavior is similar 6050to C library "strcmp". 6051 6052Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 6053external function. In the 32-bit non-debug case, the stack use has been 6054reduced from 168 bytes to 32 bytes. 6055 6056Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 6057whose purpose is to allow the AML interpreter to forgive certain bad AML 6058constructs. Default setting is FALSE. 6059 6060Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 6061support code. If enabled, it allows field access to go beyond the end of a 6062region definition if the field is within the region length rounded up to the 6063next access width boundary (a common coding error.) 6064 6065Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 6066ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 6067symbols are lowercased by the latest version of the AcpiSrc tool. 6068 6069The prototypes for the PCI interfaces in acpiosxf.h have been updated to 6070rename "Register" to simply "Reg" to prevent certain compilers from 6071complaining. 6072 6073Code and Data Size: Current and previous core subsystem library sizes are 6074shown below. These are the code and data sizes for the acpica.lib produced 6075by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6076any ACPI driver or OSPM code. The debug version of the code includes the 6077debug output trace mechanism and has a much larger code and data size. Note 6078that these values will vary depending on the efficiency of the compiler and 6079the compiler options used during generation. 6080 6081 Previous Release: 6082 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6083 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6084 Current Release: 6085 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 6086 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 6087 6088 60892) iASL Compiler/Disassembler: 6090 6091Implemented full support for Package objects within the Case() operator. 6092Note: The Break() operator is currently not supported within Case blocks 6093(TermLists) as there is some question about backward compatibility with ACPI 60941.0 interpreters. 6095 6096 6097Fixed a problem where complex terms were not supported properly within the 6098Switch() operator. 6099 6100Eliminated extraneous warning for compiler-emitted reserved names of the 6101form "_T_x". (Used in Switch/Case operators.) 6102 6103Eliminated optimization messages for "_T_x" objects and small constants 6104within the DefinitionBlock operator. 6105 6106 6107---------------------------------------- 610815 June 2004. Summary of changes for version 20040615: 6109 61101) ACPI CA Core Subsystem: 6111 6112Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6113following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6114LLessEqual. 6115 6116All directory names in the entire source package are lower case, as they 6117were in earlier releases. 6118 6119Implemented "Disassemble" command in the AML debugger that will disassemble 6120a single control method. 6121 6122Code and Data Size: Current and previous core subsystem library sizes are 6123shown below. These are the code and data sizes for the acpica.lib produced 6124by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6125any ACPI driver or OSPM code. The debug version of the code includes the 6126debug output trace mechanism and has a much larger code and data size. Note 6127that these values will vary depending on the efficiency of the compiler and 6128the compiler options used during generation. 6129 6130 Previous Release: 6131 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6132 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6133 6134 Current Release: 6135 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 6136 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 6137 6138 61392) iASL Compiler/Disassembler: 6140 6141Implemented support for Buffer and String objects (as per ACPI 2.0) for the 6142following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 6143LLessEqual. 6144 6145All directory names in the entire source package are lower case, as they 6146were in earlier releases. 6147 6148Fixed a fault when using the -g or -d<nofilename> options if the FADT was 6149not found. 6150 6151Fixed an issue with the Windows version of the compiler where later versions 6152of Windows place the FADT in the registry under the name "FADT" and not 6153"FACP" as earlier versions did. This applies when using the -g or - 6154d<nofilename> options. The compiler now looks for both strings as 6155necessary. 6156 6157Fixed a problem with compiler namepath optimization where a namepath within 6158the Scope() operator could not be optimized if the namepath was a subpath of 6159the current scope path. 6160 6161---------------------------------------- 616227 May 2004. Summary of changes for version 20040527: 6163 61641) ACPI CA Core Subsystem: 6165 6166Completed a new design and implementation for EBDA (Extended BIOS Data Area) 6167support in the RSDP scan code. The original code improperly scanned for the 6168EBDA by simply scanning from memory location 0 to 0x400. The correct method 6169is to first obtain the EBDA pointer from within the BIOS data area, then 6170scan 1K of memory starting at the EBDA pointer. There appear to be few if 6171any machines that place the RSDP in the EBDA, however. 6172 6173Integrated a fix for a possible fault during evaluation of BufferField 6174arguments. Obsolete code that was causing the problem was removed. 6175 6176Found and fixed a problem in the Field Support Code where data could be 6177corrupted on a bit field read that starts on an aligned boundary but does 6178not end on an aligned boundary. Merged the read/write "datum length" 6179calculation code into a common procedure. 6180 6181Rolled in a couple of changes to the FreeBSD-specific header. 6182 6183 6184Code and Data Size: Current and previous core subsystem library sizes are 6185shown below. These are the code and data sizes for the acpica.lib produced 6186by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6187any ACPI driver or OSPM code. The debug version of the code includes the 6188debug output trace mechanism and has a much larger code and data size. Note 6189that these values will vary depending on the efficiency of the compiler and 6190the compiler options used during generation. 6191 6192 Previous Release: 6193 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6194 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6195 Current Release: 6196 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 6197 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 6198 6199 62002) iASL Compiler/Disassembler: 6201 6202Fixed a generation warning produced by some overly-verbose compilers for a 620364-bit constant. 6204 6205---------------------------------------- 620614 May 2004. Summary of changes for version 20040514: 6207 62081) ACPI CA Core Subsystem: 6209 6210Fixed a problem where hardware GPE enable bits sometimes not set properly 6211during and after GPE method execution. Result of 04/27 changes. 6212 6213Removed extra "clear all GPEs" when sleeping/waking. 6214 6215Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 6216AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 6217the new AcpiEv* calls as appropriate. 6218 6219ACPI_OS_NAME was removed from the OS-specific headers. The default name is 6220now "Microsoft Windows NT" for maximum compatibility. However this can be 6221changed by modifying the acconfig.h file. 6222 6223Allow a single invocation of AcpiInstallNotifyHandler for a handler that 6224traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 6225 6226Run _INI methods on ThermalZone objects. This is against the ACPI 6227specification, but there is apparently ASL code in the field that has these 6228_INI methods, and apparently "other" AML interpreters execute them. 6229 6230Performed a full 16/32/64 bit lint that resulted in some small changes. 6231 6232Added a sleep simulation command to the AML debugger to test sleep code. 6233 6234Code and Data Size: Current and previous core subsystem library sizes are 6235shown below. These are the code and data sizes for the acpica.lib produced 6236by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6237any ACPI driver or OSPM code. The debug version of the code includes the 6238debug output trace mechanism and has a much larger code and data size. Note 6239that these values will vary depending on the efficiency of the compiler and 6240the compiler options used during generation. 6241 6242 Previous Release: 6243 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6244 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6245 Current Release: 6246 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6247 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 6248 6249---------------------------------------- 625027 April 2004. Summary of changes for version 20040427: 6251 62521) ACPI CA Core Subsystem: 6253 6254Completed a major overhaul of the GPE handling within ACPI CA. There are 6255now three types of GPEs: wake-only, runtime-only, and combination wake/run. 6256The only GPEs allowed to be combination wake/run are for button-style 6257devices such as a control-method power button, control-method sleep button, 6258or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 6259referenced by any _PRW methods are marked for "runtime" and hardware 6260enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 6261(and disabled at runtime). However, at sleep time, only those GPEs that 6262have been specifically enabled for wake via the AcpiEnableGpe interface will 6263actually be hardware enabled. 6264 6265A new external interface has been added, AcpiSetGpeType(), that is meant to 6266be used by device drivers to force a GPE to a particular type. It will be 6267especially useful for the drivers for the button devices mentioned above. 6268 6269Completed restructuring of the ACPI CA initialization sequence so that 6270default operation region handlers are installed before GPEs are initialized 6271and the _PRW methods are executed. This will prevent errors when the _PRW 6272methods attempt to access system memory or I/O space. 6273 6274GPE enable/disable no longer reads the GPE enable register. We now keep the 6275enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 6276thus no longer depend on the hardware to maintain these bits. 6277 6278Always clear the wake status and fixed/GPE status bits before sleep, even 6279for state S5. 6280 6281Improved the AML debugger output for displaying the GPE blocks and their 6282current status. 6283 6284Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 6285x = 0,1,2,3,4. 6286 6287Fixed a problem where the physical address was incorrectly calculated when 6288the Load() operator was used to directly load from an Operation Region (vs. 6289loading from a Field object.) Also added check for minimum table length for 6290this case. 6291 6292Fix for multiple mutex acquisition. Restore original thread SyncLevel on 6293mutex release. 6294 6295Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 6296consistency with the other fields returned. 6297 6298Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 6299structure for each GPE in the system, so the size of this structure is 6300important. 6301 6302CPU stack requirement reduction: Cleaned up the method execution and object 6303evaluation paths so that now a parameter structure is passed, instead of 6304copying the various method parameters over and over again. 6305 6306In evregion.c: Correctly exit and reenter the interpreter region if and 6307only if dispatching an operation region request to a user-installed handler. 6308Do not exit/reenter when dispatching to a default handler (e.g., default 6309system memory or I/O handlers) 6310 6311 6312Notes for updating drivers for the new GPE support. The following changes 6313must be made to ACPI-related device drivers that are attached to one or more 6314GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6315 63161) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6317explicitly call AcpiEnableGpe. 63182) There is a new interface called AcpiSetGpeType. This should be called 6319before enabling the GPE. Also, this interface will automatically disable 6320the GPE if it is currently enabled. 63213) AcpiEnableGpe no longer supports a GPE type flag. 6322 6323Specific drivers that must be changed: 63241) EC driver: 6325 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6326AeGpeHandler, NULL); 6327 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6328 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6329 63302) Button Drivers (Power, Lid, Sleep): 6331Run _PRW method under parent device 6332If _PRW exists: /* This is a control-method button */ 6333 Extract GPE number and possibly GpeDevice 6334 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6335 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6336 6337For all other devices that have _PRWs, we automatically set the GPE type to 6338ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6339must be done on a selective basis, usually requiring some kind of user app 6340to allow the user to pick the wake devices. 6341 6342 6343Code and Data Size: Current and previous core subsystem library sizes are 6344shown below. These are the code and data sizes for the acpica.lib produced 6345by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6346any ACPI driver or OSPM code. The debug version of the code includes the 6347debug output trace mechanism and has a much larger code and data size. Note 6348that these values will vary depending on the efficiency of the compiler and 6349the compiler options used during generation. 6350 6351 Previous Release: 6352 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6353 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6354 Current Release: 6355 6356 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6357 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6358 6359 6360 6361---------------------------------------- 636202 April 2004. Summary of changes for version 20040402: 6363 63641) ACPI CA Core Subsystem: 6365 6366Fixed an interpreter problem where an indirect store through an ArgX 6367parameter was incorrectly applying the "implicit conversion rules" during 6368the store. From the ACPI specification: "If the target is a method local or 6369argument (LocalX or ArgX), no conversion is performed and the result is 6370stored directly to the target". The new behavior is to disable implicit 6371conversion during ALL stores to an ArgX. 6372 6373Changed the behavior of the _PRW method scan to ignore any and all errors 6374returned by a given _PRW. This prevents the scan from aborting from the 6375failure of any single _PRW. 6376 6377Moved the runtime configuration parameters from the global init procedure to 6378static variables in acglobal.h. This will allow the host to override the 6379default values easily. 6380 6381Code and Data Size: Current and previous core subsystem library sizes are 6382shown below. These are the code and data sizes for the acpica.lib produced 6383by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6384any ACPI driver or OSPM code. The debug version of the code includes the 6385debug output trace mechanism and has a much larger code and data size. Note 6386that these values will vary depending on the efficiency of the compiler and 6387the compiler options used during generation. 6388 6389 Previous Release: 6390 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6391 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6392 Current Release: 6393 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6394 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6395 6396 63972) iASL Compiler/Disassembler: 6398 6399iASL now fully disassembles SSDTs. However, External() statements are not 6400generated automatically for unresolved symbols at this time. This is a 6401planned feature for future implementation. 6402 6403Fixed a scoping problem in the disassembler that occurs when the type of the 6404target of a Scope() operator is overridden. This problem caused an 6405incorrectly nested internal namespace to be constructed. 6406 6407Any warnings or errors that are emitted during disassembly are now commented 6408out automatically so that the resulting file can be recompiled without any 6409hand editing. 6410 6411---------------------------------------- 641226 March 2004. Summary of changes for version 20040326: 6413 64141) ACPI CA Core Subsystem: 6415 6416Implemented support for "wake" GPEs via interaction between GPEs and the 6417_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6418identified as a WAKE GPE and by default will no longer be enabled at 6419runtime. Previously, we were blindly enabling all GPEs with a corresponding 6420_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6421believe this has been the cause of thousands of "spurious" GPEs on some 6422systems. 6423 6424This new GPE behavior is can be reverted to the original behavior (enable 6425ALL GPEs at runtime) via a runtime flag. 6426 6427Fixed a problem where aliased control methods could not access objects 6428properly. The proper scope within the namespace was not initialized 6429(transferred to the target of the aliased method) before executing the 6430target method. 6431 6432Fixed a potential race condition on internal object deletion on the return 6433object in AcpiEvaluateObject. 6434 6435Integrated a fix for resource descriptors where both _MEM and _MTP were 6436being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6437wide, 0x0F instead of 0x03.) 6438 6439Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6440fault in some cases. 6441 6442Updated Notify() values for debug statements in evmisc.c 6443 6444Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6445 6446Code and Data Size: Current and previous core subsystem library sizes are 6447shown below. These are the code and data sizes for the acpica.lib produced 6448by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6449any ACPI driver or OSPM code. The debug version of the code includes the 6450debug output trace mechanism and has a much larger code and data size. Note 6451that these values will vary depending on the efficiency of the compiler and 6452the compiler options used during generation. 6453 6454 Previous Release: 6455 6456 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6457 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6458 Current Release: 6459 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6460 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6461 6462---------------------------------------- 646311 March 2004. Summary of changes for version 20040311: 6464 64651) ACPI CA Core Subsystem: 6466 6467Fixed a problem where errors occurring during the parse phase of control 6468method execution did not abort cleanly. For example, objects created and 6469installed in the namespace were not deleted. This caused all subsequent 6470invocations of the method to return the AE_ALREADY_EXISTS exception. 6471 6472Implemented a mechanism to force a control method to "Serialized" execution 6473if the method attempts to create namespace objects. (The root of the 6474AE_ALREADY_EXISTS problem.) 6475 6476Implemented support for the predefined _OSI "internal" control method. 6477Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6478"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6479This feature will allow "other" operating systems to execute the fully 6480tested, "Windows" code path through the ASL code 6481 6482Global Lock Support: Now allows multiple acquires and releases with any 6483internal thread. Removed concept of "owning thread" for this special mutex. 6484 6485Fixed two functions that were inappropriately declaring large objects on the 6486CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6487method execution considerably. 6488 6489Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6490S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6491 6492Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6493defined on the machine. 6494 6495Implemented two runtime options: One to force all control method execution 6496to "Serialized" to mimic Windows behavior, another to disable _OSI support 6497if it causes problems on a given machine. 6498 6499Code and Data Size: Current and previous core subsystem library sizes are 6500shown below. These are the code and data sizes for the acpica.lib produced 6501by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6502any ACPI driver or OSPM code. The debug version of the code includes the 6503debug output trace mechanism and has a much larger code and data size. Note 6504that these values will vary depending on the efficiency of the compiler and 6505the compiler options used during generation. 6506 6507 Previous Release: 6508 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6509 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6510 Current Release: 6511 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6512 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6513 65142) iASL Compiler/Disassembler: 6515 6516Fixed an array size problem for FreeBSD that would cause the compiler to 6517fault. 6518 6519---------------------------------------- 652020 February 2004. Summary of changes for version 20040220: 6521 6522 65231) ACPI CA Core Subsystem: 6524 6525Implemented execution of _SxD methods for Device objects in the 6526GetObjectInfo interface. 6527 6528Fixed calls to _SST method to pass the correct arguments. 6529 6530Added a call to _SST on wake to restore to "working" state. 6531 6532Check for End-Of-Buffer failure case in the WalkResources interface. 6533 6534Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6535structures to the beginning of the file. 6536 6537After wake, clear GPE status register(s) before enabling GPEs. 6538 6539After wake, clear/enable power button. (Perhaps we should clear/enable all 6540fixed events upon wake.) 6541 6542Fixed a couple of possible memory leaks in the Namespace manager. 6543 6544Integrated latest acnetbsd.h file. 6545 6546---------------------------------------- 654711 February 2004. Summary of changes for version 20040211: 6548 6549 65501) ACPI CA Core Subsystem: 6551 6552Completed investigation and implementation of the call-by-reference 6553mechanism for control method arguments. 6554 6555Fixed a problem where a store of an object into an indexed package could 6556fail if the store occurs within a different method than the method that 6557created the package. 6558 6559Fixed a problem where the ToDecimal operator could return incorrect results. 6560 6561Fixed a problem where the CopyObject operator could fail on some of the more 6562obscure objects (e.g., Reference objects.) 6563 6564Improved the output of the Debug object to display buffer, package, and 6565index objects. 6566 6567Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6568the expected result. 6569 6570Added permanent ACPI_REPORT_ERROR macros for all instances of the 6571ACPI_AML_INTERNAL exception. 6572 6573Integrated latest version of acfreebsd.h 6574 6575---------------------------------------- 657616 January 2004. Summary of changes for version 20040116: 6577 6578The purpose of this release is primarily to update the copyright years in 6579each module, thus causing a huge number of diffs. There are a few small 6580functional changes, however. 6581 65821) ACPI CA Core Subsystem: 6583 6584Improved error messages when there is a problem finding one or more of the 6585required base ACPI tables 6586 6587Reintroduced the definition of APIC_HEADER in actbl.h 6588 6589Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6590 6591Removed extraneous reference to NewObj in dsmthdat.c 6592 65932) iASL compiler 6594 6595Fixed a problem introduced in December that disabled the correct disassembly 6596of Resource Templates 6597 6598 6599---------------------------------------- 660003 December 2003. Summary of changes for version 20031203: 6601 66021) ACPI CA Core Subsystem: 6603 6604Changed the initialization of Operation Regions during subsystem 6605init to perform two entire walks of the ACPI namespace; The first 6606to initialize the regions themselves, the second to execute the 6607_REG methods. This fixed some interdependencies across _REG 6608methods found on some machines. 6609 6610Fixed a problem where a Store(Local0, Local1) could simply update 6611the object reference count, and not create a new copy of the 6612object if the Local1 is uninitialized. 6613 6614Implemented support for the _SST reserved method during sleep 6615transitions. 6616 6617Implemented support to clear the SLP_TYP and SLP_EN bits when 6618waking up, this is apparently required by some machines. 6619 6620When sleeping, clear the wake status only if SleepState is not S5. 6621 6622Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6623pointer arithmetic advanced a string pointer too far. 6624 6625Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6626could be returned if the requested table has not been loaded. 6627 6628Within the support for IRQ resources, restructured the handling of 6629the active and edge/level bits. 6630 6631Fixed a few problems in AcpiPsxExecute() where memory could be 6632leaked under certain error conditions. 6633 6634Improved error messages for the cases where the ACPI mode could 6635not be entered. 6636 6637Code and Data Size: Current and previous core subsystem library 6638sizes are shown below. These are the code and data sizes for the 6639acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6640these values do not include any ACPI driver or OSPM code. The 6641debug version of the code includes the debug output trace 6642mechanism and has a much larger code and data size. Note that 6643these values will vary depending on the efficiency of the compiler 6644and the compiler options used during generation. 6645 6646 Previous Release (20031029): 6647 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6648 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6649 Current Release: 6650 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6651 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6652 66532) iASL Compiler/Disassembler: 6654 6655Implemented a fix for the iASL disassembler where a bad index was 6656generated. This was most noticeable on 64-bit platforms 6657 6658 6659---------------------------------------- 666029 October 2003. Summary of changes for version 20031029: 6661 66621) ACPI CA Core Subsystem: 6663 6664 6665Fixed a problem where a level-triggered GPE with an associated 6666_Lxx control method was incorrectly cleared twice. 6667 6668Fixed a problem with the Field support code where an access can 6669occur beyond the end-of-region if the field is non-aligned but 6670extends to the very end of the parent region (resulted in an 6671AE_AML_REGION_LIMIT exception.) 6672 6673Fixed a problem with ACPI Fixed Events where an RT Clock handler 6674would not get invoked on an RTC event. The RTC event bitmasks for 6675the PM1 registers were not being initialized properly. 6676 6677Implemented support for executing _STA and _INI methods for 6678Processor objects. Although this is currently not part of the 6679ACPI specification, there is existing ASL code that depends on the 6680init-time execution of these methods. 6681 6682Implemented and deployed a GetDescriptorName function to decode 6683the various types of internal descriptors. Guards against null 6684descriptors during debug output also. 6685 6686Implemented and deployed a GetNodeName function to extract the 4- 6687character namespace node name. This function simplifies the debug 6688and error output, as well as guarding against null pointers during 6689output. 6690 6691Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6692simplify the debug and error output of 64-bit integers. This 6693macro replaces the HIDWORD and LODWORD macros for dumping these 6694integers. 6695 6696Updated the implementation of the Stall() operator to only call 6697AcpiOsStall(), and also return an error if the operand is larger 6698than 255. This preserves the required behavior of not 6699relinquishing the processor, as would happen if AcpiOsSleep() was 6700called for "long stalls". 6701 6702Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6703initialized are now treated as NOOPs. 6704 6705Cleaned up a handful of warnings during 64-bit generation. 6706 6707Fixed a reported error where and incorrect GPE number was passed 6708to the GPE dispatch handler. This value is only used for error 6709output, however. Used this opportunity to clean up and streamline 6710the GPE dispatch code. 6711 6712Code and Data Size: Current and previous core subsystem library 6713sizes are shown below. These are the code and data sizes for the 6714acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6715these values do not include any ACPI driver or OSPM code. The 6716 6717debug version of the code includes the debug output trace 6718mechanism and has a much larger code and data size. Note that 6719these values will vary depending on the efficiency of the compiler 6720and the compiler options used during generation. 6721 6722 Previous Release (20031002): 6723 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6724 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6725 Current Release: 6726 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6727 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6728 6729 67302) iASL Compiler/Disassembler: 6731 6732Updated the iASL compiler to return an error if the operand to the 6733Stall() operator is larger than 255. 6734 6735 6736---------------------------------------- 673702 October 2003. Summary of changes for version 20031002: 6738 6739 67401) ACPI CA Core Subsystem: 6741 6742Fixed a problem with Index Fields where the index was not 6743incremented for fields that require multiple writes to the 6744index/data registers (Fields that are wider than the data 6745register.) 6746 6747Fixed a problem with all Field objects where a write could go 6748beyond the end-of-field if the field was larger than the access 6749granularity and therefore required multiple writes to complete the 6750request. An extra write beyond the end of the field could happen 6751inadvertently. 6752 6753Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6754would incorrectly be returned if the width of the Data Register 6755was larger than the specified field access width. 6756 6757Completed fixes for LoadTable() and Unload() and verified their 6758operation. Implemented full support for the "DdbHandle" object 6759throughout the ACPI CA subsystem. 6760 6761Implemented full support for the MADT and ECDT tables in the ACPI 6762CA header files. Even though these tables are not directly 6763consumed by ACPI CA, the header definitions are useful for ACPI 6764device drivers. 6765 6766Integrated resource descriptor fixes posted to the Linux ACPI 6767list. This included checks for minimum descriptor length, and 6768support for trailing NULL strings within descriptors that have 6769optional string elements. 6770 6771Code and Data Size: Current and previous core subsystem library 6772sizes are shown below. These are the code and data sizes for the 6773acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6774these values do not include any ACPI driver or OSPM code. The 6775debug version of the code includes the debug output trace 6776mechanism and has a much larger code and data size. Note that 6777these values will vary depending on the efficiency of the compiler 6778and the compiler options used during generation. 6779 6780 Previous Release (20030918): 6781 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6782 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6783 Current Release: 6784 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6785 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6786 6787 67882) iASL Compiler: 6789 6790Implemented detection of non-ASCII characters within the input 6791source ASL file. This catches attempts to compile binary (AML) 6792files early in the compile, with an informative error message. 6793 6794Fixed a problem where the disassembler would fault if the output 6795filename could not be generated or if the output file could not be 6796opened. 6797 6798---------------------------------------- 679918 September 2003. Summary of changes for version 20030918: 6800 6801 68021) ACPI CA Core Subsystem: 6803 6804Found and fixed a longstanding problem with the late execution of 6805the various deferred AML opcodes (such as Operation Regions, 6806Buffer Fields, Buffers, and Packages). If the name string 6807specified for the name of the new object placed the object in a 6808scope other than the current scope, the initialization/execution 6809of the opcode failed. The solution to this problem was to 6810implement a mechanism where the late execution of such opcodes 6811does not attempt to lookup/create the name a second time in an 6812incorrect scope. This fixes the "region size computed 6813incorrectly" problem. 6814 6815Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6816Global Lock AE_BAD_PARAMETER error. 6817 6818Fixed several 64-bit issues with prototypes, casting and data 6819types. 6820 6821Removed duplicate prototype from acdisasm.h 6822 6823Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6824 6825Code and Data Size: Current and previous core subsystem library 6826sizes are shown below. These are the code and data sizes for the 6827acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6828these values do not include any ACPI driver or OSPM code. The 6829debug version of the code includes the debug output trace 6830mechanism and has a much larger code and data size. Note that 6831these values will vary depending on the efficiency of the compiler 6832and the compiler options used during generation. 6833 6834 Previous Release: 6835 6836 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6837 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6838 Current Release: 6839 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6840 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6841 6842 68432) Linux: 6844 6845Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6846correct sleep time in seconds. 6847 6848---------------------------------------- 684914 July 2003. Summary of changes for version 20030619: 6850 68511) ACPI CA Core Subsystem: 6852 6853Parse SSDTs in order discovered, as opposed to reverse order 6854(Hrvoje Habjanic) 6855 6856Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6857Klausner, 6858 Nate Lawson) 6859 6860 68612) Linux: 6862 6863Dynamically allocate SDT list (suggested by Andi Kleen) 6864 6865proc function return value cleanups (Andi Kleen) 6866 6867Correctly handle NMI watchdog during long stalls (Andrew Morton) 6868 6869Make it so acpismp=force works (reported by Andrew Morton) 6870 6871 6872---------------------------------------- 687319 June 2003. Summary of changes for version 20030619: 6874 68751) ACPI CA Core Subsystem: 6876 6877Fix To/FromBCD, eliminating the need for an arch-specific #define. 6878 6879Do not acquire a semaphore in the S5 shutdown path. 6880 6881Fix ex_digits_needed for 0. (Takayoshi Kochi) 6882 6883Fix sleep/stall code reversal. (Andi Kleen) 6884 6885Revert a change having to do with control method calling 6886semantics. 6887 68882) Linux: 6889 6890acpiphp update (Takayoshi Kochi) 6891 6892Export acpi_disabled for sonypi (Stelian Pop) 6893 6894Mention acpismp=force in config help 6895 6896Re-add acpitable.c and acpismp=force. This improves backwards 6897 6898compatibility and also cleans up the code to a significant degree. 6899 6900Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6901 6902---------------------------------------- 690322 May 2003. Summary of changes for version 20030522: 6904 69051) ACPI CA Core Subsystem: 6906 6907Found and fixed a reported problem where an AE_NOT_FOUND error 6908occurred occasionally during _BST evaluation. This turned out to 6909be an Owner ID allocation issue where a called method did not get 6910a new ID assigned to it. Eventually, (after 64k calls), the Owner 6911ID UINT16 would wraparound so that the ID would be the same as the 6912caller's and the called method would delete the caller's 6913namespace. 6914 6915Implemented extended error reporting for control methods that are 6916aborted due to a run-time exception. Output includes the exact 6917AML instruction that caused the method abort, a dump of the method 6918locals and arguments at the time of the abort, and a trace of all 6919nested control method calls. 6920 6921Modified the interpreter to allow the creation of buffers of zero 6922length from the AML code. Implemented new code to ensure that no 6923attempt is made to actually allocate a memory buffer (of length 6924zero) - instead, a simple buffer object with a NULL buffer pointer 6925and length zero is created. A warning is no longer issued when 6926the AML attempts to create a zero-length buffer. 6927 6928Implemented a workaround for the "leading asterisk issue" in 6929_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6930asterisk is automatically removed if present in any HID, UID, or 6931CID strings. The iASL compiler will still flag this asterisk as 6932an error, however. 6933 6934Implemented full support for _CID methods that return a package of 6935multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6936now additionally returns a device _CID list if present. This 6937required a change to the external interface in order to pass an 6938ACPI_BUFFER object as a parameter since the _CID list is of 6939variable length. 6940 6941Fixed a problem with the new AE_SAME_HANDLER exception where 6942handler initialization code did not know about this exception. 6943 6944Code and Data Size: Current and previous core subsystem library 6945sizes are shown below. These are the code and data sizes for the 6946acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6947these values do not include any ACPI driver or OSPM code. The 6948debug version of the code includes the debug output trace 6949mechanism and has a much larger code and data size. Note that 6950these values will vary depending on the efficiency of the compiler 6951and the compiler options used during generation. 6952 6953 Previous Release (20030509): 6954 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6955 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6956 Current Release: 6957 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6958 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6959 6960 69612) Linux: 6962 6963Fixed a bug in which we would reinitialize the ACPI interrupt 6964after it was already working, thus disabling all ACPI and the IRQs 6965for any other device sharing the interrupt. (Thanks to Stian 6966Jordet) 6967 6968Toshiba driver update (John Belmonte) 6969 6970Return only 0 or 1 for our interrupt handler status (Andrew 6971Morton) 6972 6973 69743) iASL Compiler: 6975 6976Fixed a reported problem where multiple (nested) ElseIf() 6977statements were not handled correctly by the compiler, resulting 6978in incorrect warnings and incorrect AML code. This was a problem 6979in both the ASL parser and the code generator. 6980 6981 69824) Documentation: 6983 6984Added changes to existing interfaces, new exception codes, and new 6985text concerning reference count object management versus garbage 6986collection. 6987 6988---------------------------------------- 698909 May 2003. Summary of changes for version 20030509. 6990 6991 69921) ACPI CA Core Subsystem: 6993 6994Changed the subsystem initialization sequence to hold off 6995installation of address space handlers until the hardware has been 6996initialized and the system has entered ACPI mode. This is because 6997the installation of space handlers can cause _REG methods to be 6998run. Previously, the _REG methods could potentially be run before 6999ACPI mode was enabled. 7000 7001Fixed some memory leak issues related to address space handler and 7002notify handler installation. There were some problems with the 7003reference count mechanism caused by the fact that the handler 7004objects are shared across several namespace objects. 7005 7006Fixed a reported problem where reference counts within the 7007namespace were not properly updated when named objects created by 7008method execution were deleted. 7009 7010Fixed a reported problem where multiple SSDTs caused a deletion 7011issue during subsystem termination. Restructured the table data 7012structures to simplify the linked lists and the related code. 7013 7014Fixed a problem where the table ID associated with secondary 7015tables (SSDTs) was not being propagated into the namespace objects 7016created by those tables. This would only present a problem for 7017tables that are unloaded at run-time, however. 7018 7019Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 7020type as the length parameter (instead of UINT32). 7021 7022Solved a long-standing problem where an ALREADY_EXISTS error 7023appears on various systems. This problem could happen when there 7024are multiple PCI_Config operation regions under a single PCI root 7025bus. This doesn't happen very frequently, but there are some 7026systems that do this in the ASL. 7027 7028Fixed a reported problem where the internal DeleteNode function 7029was incorrectly handling the case where a namespace node was the 7030first in the parent's child list, and had additional peers (not 7031the only child, but first in the list of children.) 7032 7033Code and Data Size: Current core subsystem library sizes are shown 7034below. These are the code and data sizes for the acpica.lib 7035produced by the Microsoft Visual C++ 6.0 compiler, and these 7036values do not include any ACPI driver or OSPM code. The debug 7037version of the code includes the debug output trace mechanism and 7038has a much larger code and data size. Note that these values will 7039vary depending on the efficiency of the compiler and the compiler 7040options used during generation. 7041 7042 Previous Release 7043 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7044 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7045 Current Release: 7046 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 7047 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 7048 7049 70502) Linux: 7051 7052Allow ":" in OS override string (Ducrot Bruno) 7053 7054Kobject fix (Greg KH) 7055 7056 70573 iASL Compiler/Disassembler: 7058 7059Fixed a problem in the generation of the C source code files (AML 7060is emitted in C source statements for BIOS inclusion) where the 7061Ascii dump that appears within a C comment at the end of each line 7062could cause a compile time error if the AML sequence happens to 7063have an open comment or close comment sequence embedded. 7064 7065 7066---------------------------------------- 706724 April 2003. Summary of changes for version 20030424. 7068 7069 70701) ACPI CA Core Subsystem: 7071 7072Support for big-endian systems has been implemented. Most of the 7073support has been invisibly added behind big-endian versions of the 7074ACPI_MOVE_* macros. 7075 7076Fixed a problem in AcpiHwDisableGpeBlock() and 7077AcpiHwClearGpeBlock() where an incorrect offset was passed to the 7078low level hardware write routine. The offset parameter was 7079actually eliminated from the low level read/write routines because 7080they had become obsolete. 7081 7082Fixed a problem where a handler object was deleted twice during 7083the removal of a fixed event handler. 7084 7085 70862) Linux: 7087 7088A fix for SMP systems with link devices was contributed by 7089 7090Compaq's Dan Zink. 7091 7092(2.5) Return whether we handled the interrupt in our IRQ handler. 7093(Linux ISRs no longer return void, so we can propagate the handler 7094return value from the ACPI CA core back to the OS.) 7095 7096 7097 70983) Documentation: 7099 7100The ACPI CA Programmer Reference has been updated to reflect new 7101interfaces and changes to existing interfaces. 7102 7103---------------------------------------- 710428 March 2003. Summary of changes for version 20030328. 7105 71061) ACPI CA Core Subsystem: 7107 7108The GPE Block Device support has been completed. New interfaces 7109are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 7110interfaces (enable, disable, clear, getstatus) have been split 7111into separate interfaces for Fixed Events and General Purpose 7112Events (GPEs) in order to support GPE Block Devices properly. 7113 7114Fixed a problem where the error message "Failed to acquire 7115semaphore" would appear during operations on the embedded 7116controller (EC). 7117 7118Code and Data Size: Current core subsystem library sizes are shown 7119below. These are the code and data sizes for the acpica.lib 7120produced by the Microsoft Visual C++ 6.0 compiler, and these 7121values do not include any ACPI driver or OSPM code. The debug 7122version of the code includes the debug output trace mechanism and 7123has a much larger code and data size. Note that these values will 7124vary depending on the efficiency of the compiler and the compiler 7125options used during generation. 7126 7127 Previous Release 7128 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7129 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7130 Current Release: 7131 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 7132 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 7133 7134 7135---------------------------------------- 713628 February 2003. Summary of changes for version 20030228. 7137 7138 71391) ACPI CA Core Subsystem: 7140 7141The GPE handling and dispatch code has been completely overhauled 7142in preparation for support of GPE Block Devices (ID ACPI0006). 7143This affects internal data structures and code only; there should 7144be no differences visible externally. One new file has been 7145added, evgpeblk.c 7146 7147The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 7148fields that are used to determine the GPE block lengths. The 7149REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 7150structures are ignored. This is per the ACPI specification but it 7151isn't very clear. The full 256 Block 0/1 GPEs are now supported 7152(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 7153 7154In the SCI interrupt handler, removed the read of the PM1_CONTROL 7155register to look at the SCI_EN bit. On some machines, this read 7156causes an SMI event and greatly slows down SCI events. (This may 7157in fact be the cause of slow battery status response on some 7158systems.) 7159 7160Fixed a problem where a store of a NULL string to a package object 7161could cause the premature deletion of the object. This was seen 7162during execution of the battery _BIF method on some systems, 7163resulting in no battery data being returned. 7164 7165Added AcpiWalkResources interface to simplify parsing of resource 7166lists. 7167 7168Code and Data Size: Current core subsystem library sizes are shown 7169below. These are the code and data sizes for the acpica.lib 7170produced by the Microsoft Visual C++ 6.0 compiler, and these 7171values do not include any ACPI driver or OSPM code. The debug 7172version of the code includes the debug output trace mechanism and 7173has a much larger code and data size. Note that these values will 7174vary depending on the efficiency of the compiler and the compiler 7175options used during generation. 7176 7177 Previous Release 7178 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7179 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7180 Current Release: 7181 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 7182 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 7183 7184 71852) Linux 7186 7187S3 fixes (Ole Rohne) 7188 7189Update ACPI PHP driver with to use new acpi_walk_resource API 7190(Bjorn Helgaas) 7191 7192Add S4BIOS support (Pavel Machek) 7193 7194Map in entire table before performing checksum (John Stultz) 7195 7196Expand the mem= cmdline to allow the specification of reserved and 7197ACPI DATA blocks (Pavel Machek) 7198 7199Never use ACPI on VISWS 7200 7201Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 7202 7203Revert a change that allowed P_BLK lengths to be 4 or 5. This is 7204causing us to think that some systems support C2 when they really 7205don't. 7206 7207Do not count processor objects for non-present CPUs (Thanks to 7208Dominik Brodowski) 7209 7210 72113) iASL Compiler: 7212 7213Fixed a problem where ASL include files could not be found and 7214opened. 7215 7216Added support for the _PDC reserved name. 7217 7218 7219---------------------------------------- 722022 January 2003. Summary of changes for version 20030122. 7221 7222 72231) ACPI CA Core Subsystem: 7224 7225Added a check for constructs of the form: Store (Local0, Local0) 7226where Local0 is not initialized. Apparently, some BIOS 7227programmers believe that this is a NOOP. Since this store doesn't 7228do anything anyway, the new prototype behavior will ignore this 7229error. This is a case where we can relax the strict checking in 7230the interpreter in the name of compatibility. 7231 7232 72332) Linux 7234 7235The AcpiSrc Source Conversion Utility has been released with the 7236Linux package for the first time. This is the utility that is 7237used to convert the ACPI CA base source code to the Linux version. 7238 7239(Both) Handle P_BLK lengths shorter than 6 more gracefully 7240 7241(Both) Move more headers to include/acpi, and delete an unused 7242header. 7243 7244(Both) Move drivers/acpi/include directory to include/acpi 7245 7246(Both) Boot functions don't use cmdline, so don't pass it around 7247 7248(Both) Remove include of unused header (Adrian Bunk) 7249 7250(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 7251the 7252former now also includes the latter, acpiphp.h only needs the one, 7253now. 7254 7255(2.5) Make it possible to select method of bios restoring after S3 7256resume. [=> no more ugly ifdefs] (Pavel Machek) 7257 7258(2.5) Make proc write interfaces work (Pavel Machek) 7259 7260(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 7261 7262(2.5) Break out ACPI Perf code into its own module, under cpufreq 7263(Dominik Brodowski) 7264 7265(2.4) S4BIOS support (Ducrot Bruno) 7266 7267(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 7268Visinoni) 7269 7270 72713) iASL Compiler: 7272 7273Added support to disassemble SSDT and PSDTs. 7274 7275Implemented support to obtain SSDTs from the Windows registry if 7276available. 7277 7278 7279---------------------------------------- 728009 January 2003. Summary of changes for version 20030109. 7281 72821) ACPI CA Core Subsystem: 7283 7284Changed the behavior of the internal Buffer-to-String conversion 7285function. The current ACPI specification states that the contents 7286of the buffer are "converted to a string of two-character 7287hexadecimal numbers, each separated by a space". Unfortunately, 7288this definition is not backwards compatible with existing ACPI 1.0 7289implementations (although the behavior was not defined in the ACPI 72901.0 specification). The new behavior simply copies data from the 7291buffer to the string until a null character is found or the end of 7292the buffer is reached. The new String object is always null 7293terminated. This problem was seen during the generation of _BIF 7294battery data where incorrect strings were returned for battery 7295type, etc. This will also require an errata to the ACPI 7296specification. 7297 7298Renamed all instances of NATIVE_UINT and NATIVE_INT to 7299ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 7300 7301Copyright in all module headers (both Linux and non-Linux) has be 7302updated to 2003. 7303 7304Code and Data Size: Current core subsystem library sizes are shown 7305below. These are the code and data sizes for the acpica.lib 7306produced by the Microsoft Visual C++ 6.0 compiler, and these 7307values do not include any ACPI driver or OSPM code. The debug 7308version of the code includes the debug output trace mechanism and 7309has a much larger code and data size. Note that these values will 7310vary depending on the efficiency of the compiler and the compiler 7311options used during generation. 7312 7313 Previous Release 7314 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7315 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7316 Current Release: 7317 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7318 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7319 7320 73212) Linux 7322 7323Fixed an oops on module insertion/removal (Matthew Tippett) 7324 7325(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7326 7327(2.5) Replace pr_debug (Randy Dunlap) 7328 7329(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7330 7331(Both) Eliminate spawning of thread from timer callback, in favor 7332of schedule_work() 7333 7334(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7335 7336(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7337 7338(Both) Add missing statics to button.c (Pavel Machek) 7339 7340Several changes have been made to the source code translation 7341utility that generates the Linux Code in order to make the code 7342more "Linux-like": 7343 7344All typedefs on structs and unions have been removed in keeping 7345with the Linux coding style. 7346 7347Removed the non-Linux SourceSafe module revision number from each 7348module header. 7349 7350Completed major overhaul of symbols to be lowercased for linux. 7351Doubled the number of symbols that are lowercased. 7352 7353Fixed a problem where identifiers within procedure headers and 7354within quotes were not fully lower cased (they were left with a 7355starting capital.) 7356 7357Some C macros whose only purpose is to allow the generation of 16- 7358bit code are now completely removed in the Linux code, increasing 7359readability and maintainability. 7360 7361---------------------------------------- 7362 736312 December 2002. Summary of changes for version 20021212. 7364 7365 73661) ACPI CA Core Subsystem: 7367 7368Fixed a problem where the creation of a zero-length AML Buffer 7369would cause a fault. 7370 7371Fixed a problem where a Buffer object that pointed to a static AML 7372buffer (in an ACPI table) could inadvertently be deleted, causing 7373memory corruption. 7374 7375Fixed a problem where a user buffer (passed in to the external 7376ACPI CA interfaces) could be overwritten if the buffer was too 7377small to complete the operation, causing memory corruption. 7378 7379Fixed a problem in the Buffer-to-String conversion code where a 7380string of length one was always returned, regardless of the size 7381of the input Buffer object. 7382 7383Removed the NATIVE_CHAR data type across the entire source due to 7384lack of need and lack of consistent use. 7385 7386Code and Data Size: Current core subsystem library sizes are shown 7387below. These are the code and data sizes for the acpica.lib 7388produced by the Microsoft Visual C++ 6.0 compiler, and these 7389values do not include any ACPI driver or OSPM code. The debug 7390version of the code includes the debug output trace mechanism and 7391has a much larger code and data size. Note that these values will 7392vary depending on the efficiency of the compiler and the compiler 7393options used during generation. 7394 7395 Previous Release 7396 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7397 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7398 Current Release: 7399 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7400 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7401 7402 7403---------------------------------------- 740405 December 2002. Summary of changes for version 20021205. 7405 74061) ACPI CA Core Subsystem: 7407 7408Fixed a problem where a store to a String or Buffer object could 7409cause corruption of the DSDT if the object type being stored was 7410the same as the target object type and the length of the object 7411being stored was equal to or smaller than the original (existing) 7412target object. This was seen to cause corruption of battery _BIF 7413buffers if the _BIF method modified the buffer on the fly. 7414 7415Fixed a problem where an internal error was generated if a control 7416method invocation was used in an OperationRegion, Buffer, or 7417Package declaration. This was caused by the deferred parsing of 7418the control method and thus the deferred creation of the internal 7419method object. The solution to this problem was to create the 7420internal method object at the moment the method is encountered in 7421the first pass - so that subsequent references to the method will 7422able to obtain the required parameter count and thus properly 7423parse the method invocation. This problem presented itself as an 7424AE_AML_INTERNAL during the pass 1 parse phase during table load. 7425 7426Fixed a problem where the internal String object copy routine did 7427not always allocate sufficient memory for the target String object 7428and caused memory corruption. This problem was seen to cause 7429"Allocation already present in list!" errors as memory allocation 7430became corrupted. 7431 7432Implemented a new function for the evaluation of namespace objects 7433that allows the specification of the allowable return object 7434types. This simplifies a lot of code that checks for a return 7435object of one or more specific objects returned from the 7436evaluation (such as _STA, etc.) This may become and external 7437function if it would be useful to ACPI-related drivers. 7438 7439Completed another round of prefixing #defines with "ACPI_" for 7440clarity. 7441 7442Completed additional code restructuring to allow more modular 7443linking for iASL compiler and AcpiExec. Several files were split 7444creating new files. New files: nsparse.c dsinit.c evgpe.c 7445 7446Implemented an abort mechanism to terminate an executing control 7447method via the AML debugger. This feature is useful for debugging 7448control methods that depend (wait) for specific hardware 7449responses. 7450 7451Code and Data Size: Current core subsystem library sizes are shown 7452below. These are the code and data sizes for the acpica.lib 7453produced by the Microsoft Visual C++ 6.0 compiler, and these 7454values do not include any ACPI driver or OSPM code. The debug 7455version of the code includes the debug output trace mechanism and 7456has a much larger code and data size. Note that these values will 7457vary depending on the efficiency of the compiler and the compiler 7458options used during generation. 7459 7460 Previous Release 7461 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7462 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7463 Current Release: 7464 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7465 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7466 7467 74682) iASL Compiler/Disassembler 7469 7470Fixed a compiler code generation problem for "Interrupt" Resource 7471Descriptors. If specified in the ASL, the optional "Resource 7472Source Index" and "Resource Source" fields were not inserted into 7473the correct location within the AML resource descriptor, creating 7474an invalid descriptor. 7475 7476Fixed a disassembler problem for "Interrupt" resource descriptors. 7477The optional "Resource Source Index" and "Resource Source" fields 7478were ignored. 7479 7480 7481---------------------------------------- 748222 November 2002. Summary of changes for version 20021122. 7483 7484 74851) ACPI CA Core Subsystem: 7486 7487Fixed a reported problem where an object stored to a Method Local 7488or Arg was not copied to a new object during the store - the 7489object pointer was simply copied to the Local/Arg. This caused 7490all subsequent operations on the Local/Arg to also affect the 7491original source of the store operation. 7492 7493Fixed a problem where a store operation to a Method Local or Arg 7494was not completed properly if the Local/Arg contained a reference 7495(from RefOf) to a named field. The general-purpose store-to- 7496namespace-node code is now used so that this case is handled 7497automatically. 7498 7499Fixed a problem where the internal object copy routine would cause 7500a protection fault if the object being copied was a Package and 7501contained either 1) a NULL package element or 2) a nested sub- 7502package. 7503 7504Fixed a problem with the GPE initialization that resulted from an 7505ambiguity in the ACPI specification. One section of the 7506specification states that both the address and length of the GPE 7507block must be zero if the block is not supported. Another section 7508implies that only the address need be zero if the block is not 7509supported. The code has been changed so that both the address and 7510the length must be non-zero to indicate a valid GPE block (i.e., 7511if either the address or the length is zero, the GPE block is 7512invalid.) 7513 7514Code and Data Size: Current core subsystem library sizes are shown 7515below. These are the code and data sizes for the acpica.lib 7516produced by the Microsoft Visual C++ 6.0 compiler, and these 7517values do not include any ACPI driver or OSPM code. The debug 7518version of the code includes the debug output trace mechanism and 7519has a much larger code and data size. Note that these values will 7520vary depending on the efficiency of the compiler and the compiler 7521options used during generation. 7522 7523 Previous Release 7524 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7525 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7526 Current Release: 7527 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7528 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7529 7530 75312) Linux 7532 7533Cleaned up EC driver. Exported an external EC read/write 7534interface. By going through this, other drivers (most notably 7535sonypi) will be able to serialize access to the EC. 7536 7537 75383) iASL Compiler/Disassembler 7539 7540Implemented support to optionally generate include files for both 7541ASM and C (the -i switch). This simplifies BIOS development by 7542automatically creating include files that contain external 7543declarations for the symbols that are created within the 7544 7545(optionally generated) ASM and C AML source files. 7546 7547 7548---------------------------------------- 754915 November 2002. Summary of changes for version 20021115. 7550 75511) ACPI CA Core Subsystem: 7552 7553Fixed a memory leak problem where an error during resolution of 7554 7555method arguments during a method invocation from another method 7556failed to cleanup properly by deleting all successfully resolved 7557argument objects. 7558 7559Fixed a problem where the target of the Index() operator was not 7560correctly constructed if the source object was a package. This 7561problem has not been detected because the use of a target operand 7562with Index() is very rare. 7563 7564Fixed a problem with the Index() operator where an attempt was 7565made to delete the operand objects twice. 7566 7567Fixed a problem where an attempt was made to delete an operand 7568twice during execution of the CondRefOf() operator if the target 7569did not exist. 7570 7571Implemented the first of perhaps several internal create object 7572functions that create and initialize a specific object type. This 7573consolidates duplicated code wherever the object is created, thus 7574shrinking the size of the subsystem. 7575 7576Implemented improved debug/error messages for errors that occur 7577during nested method invocations. All executing method pathnames 7578are displayed (with the error) as the call stack is unwound - thus 7579simplifying debug. 7580 7581Fixed a problem introduced in the 10/02 release that caused 7582premature deletion of a buffer object if a buffer was used as an 7583ASL operand where an integer operand is required (Thus causing an 7584implicit object conversion from Buffer to Integer.) The change in 7585the 10/02 release was attempting to fix a memory leak (albeit 7586incorrectly.) 7587 7588Code and Data Size: Current core subsystem library sizes are shown 7589below. These are the code and data sizes for the acpica.lib 7590produced by the Microsoft Visual C++ 6.0 compiler, and these 7591values do not include any ACPI driver or OSPM code. The debug 7592version of the code includes the debug output trace mechanism and 7593has a much larger code and data size. Note that these values will 7594vary depending on the efficiency of the compiler and the compiler 7595options used during generation. 7596 7597 Previous Release 7598 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7599 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7600 Current Release: 7601 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7602 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7603 7604 76052) Linux 7606 7607Changed the implementation of the ACPI semaphores to use down() 7608instead of down_interruptable(). It is important that the 7609execution of ACPI control methods not be interrupted by signals. 7610Methods must run to completion, or the system may be left in an 7611unknown/unstable state. 7612 7613Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7614(Shawn Starr) 7615 7616 76173) iASL Compiler/Disassembler 7618 7619 7620Changed the default location of output files. All output files 7621are now placed in the current directory by default instead of in 7622the directory of the source file. This change may affect some 7623existing makefiles, but it brings the behavior of the compiler in 7624line with other similar tools. The location of the output files 7625can be overridden with the -p command line switch. 7626 7627 7628---------------------------------------- 762911 November 2002. Summary of changes for version 20021111. 7630 7631 76320) ACPI Specification 2.0B is released and is now available at: 7633http://www.acpi.info/index.html 7634 7635 76361) ACPI CA Core Subsystem: 7637 7638Implemented support for the ACPI 2.0 SMBus Operation Regions. 7639This includes the early detection and handoff of the request to 7640the SMBus region handler (avoiding all of the complex field 7641support code), and support for the bidirectional return packet 7642from an SMBus write operation. This paves the way for the 7643development of SMBus drivers in each host operating system. 7644 7645Fixed a problem where the semaphore WAIT_FOREVER constant was 7646defined as 32 bits, but must be 16 bits according to the ACPI 7647specification. This had the side effect of causing ASL 7648Mutex/Event timeouts even though the ASL code requested a wait 7649forever. Changed all internal references to the ACPI timeout 7650parameter to 16 bits to prevent future problems. Changed the name 7651of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7652 7653Code and Data Size: Current core subsystem library sizes are shown 7654below. These are the code and data sizes for the acpica.lib 7655produced by the Microsoft Visual C++ 6.0 compiler, and these 7656values do not include any ACPI driver or OSPM code. The debug 7657version of the code includes the debug output trace mechanism and 7658has a much larger code and data size. Note that these values will 7659vary depending on the efficiency of the compiler and the compiler 7660options used during generation. 7661 7662 Previous Release 7663 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7664 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7665 Current Release: 7666 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7667 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7668 7669 76702) Linux 7671 7672Module loading/unloading fixes (John Cagle) 7673 7674 76753) iASL Compiler/Disassembler 7676 7677Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7678 7679Implemented support for the disassembly of all SMBus protocol 7680keywords (SMBQuick, SMBWord, etc.) 7681 7682---------------------------------------- 768301 November 2002. Summary of changes for version 20021101. 7684 7685 76861) ACPI CA Core Subsystem: 7687 7688Fixed a problem where platforms that have a GPE1 block but no GPE0 7689block were not handled correctly. This resulted in a "GPE 7690overlap" error message. GPE0 is no longer required. 7691 7692Removed code added in the previous release that inserted nodes 7693into the namespace in alphabetical order. This caused some side- 7694effects on various machines. The root cause of the problem is 7695still under investigation since in theory, the internal ordering 7696of the namespace nodes should not matter. 7697 7698 7699Enhanced error reporting for the case where a named object is not 7700found during control method execution. The full ACPI namepath 7701(name reference) of the object that was not found is displayed in 7702this case. 7703 7704Note: as a result of the overhaul of the namespace object types in 7705the previous release, the namespace nodes for the predefined 7706scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7707instead of ACPI_TYPE_ANY. This simplifies the namespace 7708management code but may affect code that walks the namespace tree 7709looking for specific object types. 7710 7711Code and Data Size: Current core subsystem library sizes are shown 7712below. These are the code and data sizes for the acpica.lib 7713produced by the Microsoft Visual C++ 6.0 compiler, and these 7714values do not include any ACPI driver or OSPM code. The debug 7715version of the code includes the debug output trace mechanism and 7716has a much larger code and data size. Note that these values will 7717vary depending on the efficiency of the compiler and the compiler 7718options used during generation. 7719 7720 Previous Release 7721 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7722 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7723 Current Release: 7724 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7725 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7726 7727 77282) Linux 7729 7730Fixed a problem introduced in the previous release where the 7731Processor and Thermal objects were not recognized and installed in 7732/proc. This was related to the scope type change described above. 7733 7734 77353) iASL Compiler/Disassembler 7736 7737Implemented the -g option to get all of the required ACPI tables 7738from the registry and save them to files (Windows version of the 7739compiler only.) The required tables are the FADT, FACS, and DSDT. 7740 7741Added ACPI table checksum validation during table disassembly in 7742order to catch corrupted tables. 7743 7744 7745---------------------------------------- 774622 October 2002. Summary of changes for version 20021022. 7747 77481) ACPI CA Core Subsystem: 7749 7750Implemented a restriction on the Scope operator that the target 7751must already exist in the namespace at the time the operator is 7752encountered (during table load or method execution). In other 7753words, forward references are not allowed and Scope() cannot 7754create a new object. This changes the previous behavior where the 7755interpreter would create the name if not found. This new behavior 7756correctly enables the search-to-root algorithm during namespace 7757lookup of the target name. Because of this upsearch, this fixes 7758the known Compaq _SB_.OKEC problem and makes both the AML 7759interpreter and iASL compiler compatible with other ACPI 7760implementations. 7761 7762Completed a major overhaul of the internal ACPI object types for 7763the ACPI Namespace and the associated operand objects. Many of 7764these types had become obsolete with the introduction of the two- 7765pass namespace load. This cleanup simplifies the code and makes 7766the entire namespace load mechanism much clearer and easier to 7767understand. 7768 7769Improved debug output for tracking scope opening/closing to help 7770diagnose scoping issues. The old scope name as well as the new 7771scope name are displayed. Also improved error messages for 7772problems with ASL Mutex objects and error messages for GPE 7773problems. 7774 7775Cleaned up the namespace dump code, removed obsolete code. 7776 7777All string output (for all namespace/object dumps) now uses the 7778common ACPI string output procedure which handles escapes properly 7779and does not emit non-printable characters. 7780 7781Fixed some issues with constants in the 64-bit version of the 7782local C library (utclib.c) 7783 7784 77852) Linux 7786 7787EC Driver: No longer attempts to acquire the Global Lock at 7788interrupt level. 7789 7790 77913) iASL Compiler/Disassembler 7792 7793Implemented ACPI 2.0B grammar change that disallows all Type 1 and 77942 opcodes outside of a control method. This means that the 7795"executable" operators (versus the "namespace" operators) cannot 7796be used at the table level; they can only be used within a control 7797method. 7798 7799Implemented the restriction on the Scope() operator where the 7800target must already exist in the namespace at the time the 7801operator is encountered (during ASL compilation). In other words, 7802forward references are not allowed and Scope() cannot create a new 7803object. This makes the iASL compiler compatible with other ACPI 7804implementations and makes the Scope() implementation adhere to the 7805ACPI specification. 7806 7807Fixed a problem where namepath optimization for the Alias operator 7808was optimizing the wrong path (of the two namepaths.) This caused 7809a "Missing alias link" error message. 7810 7811Fixed a problem where an "unknown reserved name" warning could be 7812incorrectly generated for names like "_SB" when the trailing 7813underscore is not used in the original ASL. 7814 7815Fixed a problem where the reserved name check did not handle 7816NamePaths with multiple NameSegs correctly. The first nameseg of 7817the NamePath was examined instead of the last NameSeg. 7818 7819 7820---------------------------------------- 7821 782202 October 2002. Summary of changes for this release. 7823 7824 78251) ACPI CA Core Subsystem version 20021002: 7826 7827Fixed a problem where a store/copy of a string to an existing 7828string did not always set the string length properly in the String 7829object. 7830 7831Fixed a reported problem with the ToString operator where the 7832behavior was identical to the ToHexString operator instead of just 7833simply converting a raw buffer to a string data type. 7834 7835Fixed a problem where CopyObject and the other "explicit" 7836conversion operators were not updating the internal namespace node 7837type as part of the store operation. 7838 7839Fixed a memory leak during implicit source operand conversion 7840where the original object was not deleted if it was converted to a 7841new object of a different type. 7842 7843Enhanced error messages for all problems associated with namespace 7844lookups. Common procedure generates and prints the lookup name as 7845well as the formatted status. 7846 7847Completed implementation of a new design for the Alias support 7848within the namespace. The existing design did not handle the case 7849where a new object was assigned to one of the two names due to the 7850use of an explicit conversion operator, resulting in the two names 7851pointing to two different objects. The new design simply points 7852the Alias name to the original name node - not to the object. 7853This results in a level of indirection that must be handled in the 7854name resolution mechanism. 7855 7856Code and Data Size: Current core subsystem library sizes are shown 7857below. These are the code and data sizes for the acpica.lib 7858produced by the Microsoft Visual C++ 6.0 compiler, and these 7859values do not include any ACPI driver or OSPM code. The debug 7860version of the code includes the debug output trace mechanism and 7861has a larger code and data size. Note that these values will vary 7862depending on the efficiency of the compiler and the compiler 7863options used during generation. 7864 7865 Previous Release 7866 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7867 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7868 Current Release: 7869 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7870 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7871 7872 78732) Linux 7874 7875Initialize thermal driver's timer before it is used. (Knut 7876Neumann) 7877 7878Allow handling negative celsius values. (Kochi Takayoshi) 7879 7880Fix thermal management and make trip points. R/W (Pavel Machek) 7881 7882Fix /proc/acpi/sleep. (P. Christeas) 7883 7884IA64 fixes. (David Mosberger) 7885 7886Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7887 7888Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7889Brodowski) 7890 7891 78923) iASL Compiler/Disassembler 7893 7894Clarified some warning/error messages. 7895 7896 7897---------------------------------------- 789818 September 2002. Summary of changes for this release. 7899 7900 79011) ACPI CA Core Subsystem version 20020918: 7902 7903Fixed a reported problem with reference chaining (via the Index() 7904and RefOf() operators) in the ObjectType() and SizeOf() operators. 7905The definition of these operators includes the dereferencing of 7906all chained references to return information on the base object. 7907 7908Fixed a problem with stores to indexed package elements - the 7909existing code would not complete the store if an "implicit 7910conversion" was not performed. In other words, if the existing 7911object (package element) was to be replaced completely, the code 7912didn't handle this case. 7913 7914Relaxed typechecking on the ASL "Scope" operator to allow the 7915target name to refer to an object of type Integer, String, or 7916Buffer, in addition to the scoping object types (Device, 7917predefined Scopes, Processor, PowerResource, and ThermalZone.) 7918This allows existing AML code that has workarounds for a bug in 7919Windows to function properly. A warning is issued, however. This 7920affects both the AML interpreter and the iASL compiler. Below is 7921an example of this type of ASL code: 7922 7923 Name(DEB,0x00) 7924 Scope(DEB) 7925 { 7926 7927Fixed some reported problems with 64-bit integer support in the 7928local implementation of C library functions (clib.c) 7929 7930 79312) Linux 7932 7933Use ACPI fix map region instead of IOAPIC region, since it is 7934undefined in non-SMP. 7935 7936Ensure that the SCI has the proper polarity and trigger, even on 7937systems that do not have an interrupt override entry in the MADT. 7938 79392.5 big driver reorganization (Pat Mochel) 7940 7941Use early table mapping code from acpitable.c (Andi Kleen) 7942 7943New blacklist entries (Andi Kleen) 7944 7945Blacklist improvements. Split blacklist code out into a separate 7946file. Move checking the blacklist to very early. Previously, we 7947would use ACPI tables, and then halfway through init, check the 7948blacklist -- too late. Now, it's early enough to completely fall- 7949back to non-ACPI. 7950 7951 79523) iASL Compiler/Disassembler version 20020918: 7953 7954Fixed a problem where the typechecking code didn't know that an 7955alias could point to a method. In other words, aliases were not 7956being dereferenced during typechecking. 7957 7958 7959---------------------------------------- 796029 August 2002. Summary of changes for this release. 7961 79621) ACPI CA Core Subsystem Version 20020829: 7963 7964If the target of a Scope() operator already exists, it must be an 7965object type that actually opens a scope -- such as a Device, 7966Method, Scope, etc. This is a fatal runtime error. Similar error 7967check has been added to the iASL compiler also. 7968 7969Tightened up the namespace load to disallow multiple names in the 7970same scope. This previously was allowed if both objects were of 7971the same type. (i.e., a lookup was the same as entering a new 7972name). 7973 7974 79752) Linux 7976 7977Ensure that the ACPI interrupt has the proper trigger and 7978polarity. 7979 7980local_irq_disable is extraneous. (Matthew Wilcox) 7981 7982Make "acpi=off" actually do what it says, and not use the ACPI 7983interpreter *or* the tables. 7984 7985Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7986Takayoshi) 7987 7988 79893) iASL Compiler/Disassembler Version 20020829: 7990 7991Implemented namepath optimization for name declarations. For 7992example, a declaration like "Method (\_SB_.ABCD)" would get 7993optimized to "Method (ABCD)" if the declaration is within the 7994\_SB_ scope. This optimization is in addition to the named 7995reference path optimization first released in the previous 7996version. This would seem to complete all possible optimizations 7997for namepaths within the ASL/AML. 7998 7999If the target of a Scope() operator already exists, it must be an 8000object type that actually opens a scope -- such as a Device, 8001Method, Scope, etc. 8002 8003Implemented a check and warning for unreachable code in the same 8004block below a Return() statement. 8005 8006Fixed a problem where the listing file was not generated if the 8007compiler aborted if the maximum error count was exceeded (200). 8008 8009Fixed a problem where the typechecking of method return values was 8010broken. This includes the check for a return value when the 8011method is invoked as a TermArg (a return value is expected.) 8012 8013Fixed a reported problem where EOF conditions during a quoted 8014string or comment caused a fault. 8015 8016 8017---------------------------------------- 801815 August 2002. Summary of changes for this release. 8019 80201) ACPI CA Core Subsystem Version 20020815: 8021 8022Fixed a reported problem where a Store to a method argument that 8023contains a reference did not perform the indirect store correctly. 8024This problem was created during the conversion to the new 8025reference object model - the indirect store to a method argument 8026code was not updated to reflect the new model. 8027 8028Reworked the ACPI mode change code to better conform to ACPI 2.0, 8029handle corner cases, and improve code legibility (Kochi Takayoshi) 8030 8031Fixed a problem with the pathname parsing for the carat (^) 8032prefix. The heavy use of the carat operator by the new namepath 8033optimization in the iASL compiler uncovered a problem with the AML 8034interpreter handling of this prefix. In the case where one or 8035more carats precede a single nameseg, the nameseg was treated as 8036standalone and the search rule (to root) was inadvertently 8037applied. This could cause both the iASL compiler and the 8038interpreter to find the wrong object or to miss the error that 8039should occur if the object does not exist at that exact pathname. 8040 8041Found and fixed the problem where the HP Pavilion DSDT would not 8042load. This was a relatively minor tweak to the table loading code 8043(a problem caused by the unexpected encounter with a method 8044invocation not within a control method), but it does not solve the 8045overall issue of the execution of AML code at the table level. 8046This investigation is still ongoing. 8047 8048Code and Data Size: Current core subsystem library sizes are shown 8049below. These are the code and data sizes for the acpica.lib 8050produced by the Microsoft Visual C++ 6.0 compiler, and these 8051values do not include any ACPI driver or OSPM code. The debug 8052version of the code includes the debug output trace mechanism and 8053has a larger code and data size. Note that these values will vary 8054depending on the efficiency of the compiler and the compiler 8055options used during generation. 8056 8057 Previous Release 8058 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8059 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8060 Current Release: 8061 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 8062 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 8063 8064 80652) Linux 8066 8067Remove redundant slab.h include (Brad Hards) 8068 8069Fix several bugs in thermal.c (Herbert Nachtnebel) 8070 8071Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 8072 8073Change acpi_system_suspend to use updated irq functions (Pavel 8074Machek) 8075 8076Export acpi_get_firmware_table (Matthew Wilcox) 8077 8078Use proper root proc entry for ACPI (Kochi Takayoshi) 8079 8080Fix early-boot table parsing (Bjorn Helgaas) 8081 8082 80833) iASL Compiler/Disassembler 8084 8085Reworked the compiler options to make them more consistent and to 8086use two-letter options where appropriate. We were running out of 8087sensible letters. This may break some makefiles, so check the 8088current options list by invoking the compiler with no parameters. 8089 8090Completed the design and implementation of the ASL namepath 8091optimization option for the compiler. This option optimizes all 8092references to named objects to the shortest possible path. The 8093first attempt tries to utilize a single nameseg (4 characters) and 8094the "search-to-root" algorithm used by the interpreter. If that 8095cannot be used (because either the name is not in the search path 8096or there is a conflict with another object with the same name), 8097the pathname is optimized using the carat prefix (usually a 8098shorter string than specifying the entire path from the root.) 8099 8100Implemented support to obtain the DSDT from the Windows registry 8101(when the disassembly option is specified with no input file). 8102Added this code as the implementation for AcpiOsTableOverride in 8103the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 8104utility) to scan memory for the DSDT to the AcpiOsTableOverride 8105function in the DOS OSL to make the disassembler truly OS 8106independent. 8107 8108Implemented a new option to disassemble and compile in one step. 8109When used without an input filename, this option will grab the 8110DSDT from the local machine, disassemble it, and compile it in one 8111step. 8112 8113Added a warning message for invalid escapes (a backslash followed 8114by any character other than the allowable escapes). This catches 8115the quoted string error "\_SB_" (which should be "\\_SB_" ). 8116 8117Also, there are numerous instances in the ACPI specification where 8118this error occurs. 8119 8120Added a compiler option to disable all optimizations. This is 8121basically the "compatibility mode" because by using this option, 8122the AML code will come out exactly the same as other ASL 8123compilers. 8124 8125Added error messages for incorrectly ordered dependent resource 8126functions. This includes: missing EndDependentFn macro at end of 8127dependent resource list, nested dependent function macros (both 8128start and end), and missing StartDependentFn macro. These are 8129common errors that should be caught at compile time. 8130 8131Implemented _OSI support for the disassembler and compiler. _OSI 8132must be included in the namespace for proper disassembly (because 8133the disassembler must know the number of arguments.) 8134 8135Added an "optimization" message type that is optional (off by 8136default). This message is used for all optimizations - including 8137constant folding, integer optimization, and namepath optimization. 8138 8139---------------------------------------- 814025 July 2002. Summary of changes for this release. 8141 8142 81431) ACPI CA Core Subsystem Version 20020725: 8144 8145The AML Disassembler has been enhanced to produce compilable ASL 8146code and has been integrated into the iASL compiler (see below) as 8147well as the single-step disassembly for the AML debugger and the 8148disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 8149resource templates and macros are fully supported. The 8150disassembler has been tested on over 30 different AML files, 8151producing identical AML when the resulting disassembled ASL file 8152is recompiled with the same ASL compiler. 8153 8154Modified the Resource Manager to allow zero interrupts and zero 8155dma channels during the GetCurrentResources call. This was 8156causing problems on some platforms. 8157 8158Added the AcpiOsRedirectOutput interface to the OSL to simplify 8159output redirection for the AcpiOsPrintf and AcpiOsVprintf 8160interfaces. 8161 8162Code and Data Size: Current core subsystem library sizes are shown 8163below. These are the code and data sizes for the acpica.lib 8164produced by the Microsoft Visual C++ 6.0 compiler, and these 8165values do not include any ACPI driver or OSPM code. The debug 8166version of the code includes the debug output trace mechanism and 8167has a larger code and data size. Note that these values will vary 8168depending on the efficiency of the compiler and the compiler 8169options used during generation. 8170 8171 Previous Release 8172 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8173 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8174 Current Release: 8175 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 8176 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 8177 8178 81792) Linux 8180 8181Fixed a panic in the EC driver (Dominik Brodowski) 8182 8183Implemented checksum of the R/XSDT itself during Linux table scan 8184(Richard Schaal) 8185 8186 81873) iASL compiler 8188 8189The AML disassembler is integrated into the compiler. The "-d" 8190option invokes the disassembler to completely disassemble an 8191input AML file, producing as output a text ASL file with the 8192extension ".dsl" (to avoid name collisions with existing .asl 8193source files.) A future enhancement will allow the disassembler 8194to obtain the BIOS DSDT from the registry under Windows. 8195 8196Fixed a problem with the VendorShort and VendorLong resource 8197descriptors where an invalid AML sequence was created. 8198 8199Implemented a fix for BufferData term in the ASL parser. It was 8200inadvertently defined twice, allowing invalid syntax to pass and 8201causing reduction conflicts. 8202 8203Fixed a problem where the Ones opcode could get converted to a 8204value of zero if "Ones" was used where a byte, word or dword value 8205was expected. The 64-bit value is now truncated to the correct 8206size with the correct value. 8207 8208 8209 8210---------------------------------------- 821102 July 2002. Summary of changes for this release. 8212 8213 82141) ACPI CA Core Subsystem Version 20020702: 8215 8216The Table Manager code has been restructured to add several new 8217features. Tables that are not required by the core subsystem 8218(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 8219validated in any way and are returned from AcpiGetFirmwareTable if 8220requested. The AcpiOsTableOverride interface is now called for 8221each table that is loaded by the subsystem in order to allow the 8222host to override any table it chooses. Previously, only the DSDT 8223could be overridden. Added one new files, tbrsdt.c and 8224tbgetall.c. 8225 8226Fixed a problem with the conversion of internal package objects to 8227external objects (when a package is returned from a control 8228method.) The return buffer length was set to zero instead of the 8229proper length of the package object. 8230 8231Fixed a reported problem with the use of the RefOf and DeRefOf 8232operators when passing reference arguments to control methods. A 8233new type of Reference object is used internally for references 8234produced by the RefOf operator. 8235 8236Added additional error messages in the Resource Manager to explain 8237AE_BAD_DATA errors when they occur during resource parsing. 8238 8239Split the AcpiEnableSubsystem into two primitives to enable a 8240finer granularity initialization sequence. These two calls should 8241be called in this order: AcpiEnableSubsystem (flags), 8242AcpiInitializeObjects (flags). The flags parameter remains the 8243same. 8244 8245 82462) Linux 8247 8248Updated the ACPI utilities module to understand the new style of 8249fully resolved package objects that are now returned from the core 8250subsystem. This eliminates errors of the form: 8251 8252 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 8253 acpi_utils-0430 [145] acpi_evaluate_reference: 8254 Invalid element in package (not a device reference) 8255 8256The method evaluation utility uses the new buffer allocation 8257scheme instead of calling AcpiEvaluate Object twice. 8258 8259Added support for ECDT. This allows the use of the Embedded 8260 8261Controller before the namespace has been fully initialized, which 8262is necessary for ACPI 2.0 support, and for some laptops to 8263initialize properly. (Laptops using ECDT are still rare, so only 8264limited testing was performed of the added functionality.) 8265 8266Fixed memory leaks in the EC driver. 8267 8268Eliminated a brittle code structure in acpi_bus_init(). 8269 8270Eliminated the acpi_evaluate() helper function in utils.c. It is 8271no longer needed since acpi_evaluate_object can optionally 8272allocate memory for the return object. 8273 8274Implemented fix for keyboard hang when getting battery readings on 8275some systems (Stephen White) 8276 8277PCI IRQ routing update (Dominik Brodowski) 8278 8279Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 8280support 8281 8282---------------------------------------- 828311 June 2002. Summary of changes for this release. 8284 8285 82861) ACPI CA Core Subsystem Version 20020611: 8287 8288Fixed a reported problem where constants such as Zero and One 8289appearing within _PRT packages were not handled correctly within 8290the resource manager code. Originally reported against the ASL 8291compiler because the code generator now optimizes integers to 8292their minimal AML representation (i.e. AML constants if possible.) 8293The _PRT code now handles all AML constant opcodes correctly 8294(Zero, One, Ones, Revision). 8295 8296Fixed a problem with the Concatenate operator in the AML 8297interpreter where a buffer result object was incorrectly marked as 8298not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 8299 8300All package sub-objects are now fully resolved before they are 8301returned from the external ACPI interfaces. This means that name 8302strings are resolved to object handles, and constant operators 8303(Zero, One, Ones, Revision) are resolved to Integers. 8304 8305Implemented immediate resolution of the AML Constant opcodes 8306(Zero, One, Ones, Revision) to Integer objects upon detection 8307within the AML stream. This has simplified and reduced the 8308generated code size of the subsystem by eliminating about 10 8309switch statements for these constants (which previously were 8310contained in Reference objects.) The complicating issues are that 8311the Zero opcode is used as a "placeholder" for unspecified 8312optional target operands and stores to constants are defined to be 8313no-ops. 8314 8315Code and Data Size: Current core subsystem library sizes are shown 8316below. These are the code and data sizes for the acpica.lib 8317produced by the Microsoft Visual C++ 6.0 compiler, and these 8318values do not include any ACPI driver or OSPM code. The debug 8319version of the code includes the debug output trace mechanism and 8320has a larger code and data size. Note that these values will vary 8321depending on the efficiency of the compiler and the compiler 8322options used during generation. 8323 8324 Previous Release 8325 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8326 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8327 Current Release: 8328 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8329 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8330 8331 83322) Linux 8333 8334 8335Added preliminary support for obtaining _TRA data for PCI root 8336bridges (Bjorn Helgaas). 8337 8338 83393) iASL Compiler Version X2046: 8340 8341Fixed a problem where the "_DDN" reserved name was defined to be a 8342control method with one argument. There are no arguments, and 8343_DDN does not have to be a control method. 8344 8345Fixed a problem with the Linux version of the compiler where the 8346source lines printed with error messages were the wrong lines. 8347This turned out to be the "LF versus CR/LF" difference between 8348Windows and Unix. This appears to be the longstanding issue 8349concerning listing output and error messages. 8350 8351Fixed a problem with the Linux version of compiler where opcode 8352names within error messages were wrong. This was caused by a 8353slight difference in the output of the Flex tool on Linux versus 8354Windows. 8355 8356Fixed a problem with the Linux compiler where the hex output files 8357contained some garbage data caused by an internal buffer overrun. 8358 8359 8360---------------------------------------- 836117 May 2002. Summary of changes for this release. 8362 8363 83641) ACPI CA Core Subsystem Version 20020517: 8365 8366Implemented a workaround to an BIOS bug discovered on the HP 8367OmniBook where the FADT revision number and the table size are 8368inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8369behavior is to fallback to using only the ACPI 1.0 fields of the 8370FADT if the table is too small to be a ACPI 2.0 table as claimed 8371by the revision number. Although this is a BIOS bug, this is a 8372case where the workaround is simple enough and with no side 8373effects, so it seemed prudent to add it. A warning message is 8374issued, however. 8375 8376Implemented minimum size checks for the fixed-length ACPI tables - 8377- the FADT and FACS, as well as consistency checks between the 8378revision number and the table size. 8379 8380Fixed a reported problem in the table override support where the 8381new table pointer was incorrectly treated as a physical address 8382instead of a logical address. 8383 8384Eliminated the use of the AE_AML_ERROR exception and replaced it 8385with more descriptive codes. 8386 8387Fixed a problem where an exception would occur if an ASL Field was 8388defined with no named Field Units underneath it (used by some 8389index fields). 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: 68.8K Code, 7.1K Data, 75.9K Total 8402 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8403 Current Release: 8404 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8405 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8406 8407 8408 84092) Linux 8410 8411Much work done on ACPI init (MADT and PCI IRQ routing support). 8412(Paul D. and Dominik Brodowski) 8413 8414Fix PCI IRQ-related panic on boot (Sam Revitch) 8415 8416Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8417 8418Fix "MHz" typo (Dominik Brodowski) 8419 8420Fix RTC year 2000 issue (Dominik Brodowski) 8421 8422Preclude multiple button proc entries (Eric Brunet) 8423 8424Moved arch-specific code out of include/platform/aclinux.h 8425 84263) iASL Compiler Version X2044: 8427 8428Implemented error checking for the string used in the EISAID macro 8429(Usually used in the definition of the _HID object.) The code now 8430strictly enforces the PnP format - exactly 7 characters, 3 8431uppercase letters and 4 hex digits. 8432 8433If a raw string is used in the definition of the _HID object 8434(instead of the EISAID macro), the string must contain all 8435alphanumeric characters (e.g., "*PNP0011" is not allowed because 8436of the asterisk.) 8437 8438Implemented checking for invalid use of ACPI reserved names for 8439most of the name creation operators (Name, Device, Event, Mutex, 8440OperationRegion, PowerResource, Processor, and ThermalZone.) 8441Previously, this check was only performed for control methods. 8442 8443Implemented an additional check on the Name operator to emit an 8444error if a reserved name that must be implemented in ASL as a 8445control method is used. We know that a reserved name must be a 8446method if it is defined with input arguments. 8447 8448The warning emitted when a namespace object reference is not found 8449during the cross reference phase has been changed into an error. 8450The "External" directive should be used for names defined in other 8451modules. 8452 8453 84544) Tools and Utilities 8455 8456The 16-bit tools (adump16 and aexec16) have been regenerated and 8457tested. 8458 8459Fixed a problem with the output of both acpidump and adump16 where 8460the indentation of closing parentheses and brackets was not 8461 8462aligned properly with the parent block. 8463 8464 8465---------------------------------------- 846603 May 2002. Summary of changes for this release. 8467 8468 84691) ACPI CA Core Subsystem Version 20020503: 8470 8471Added support a new OSL interface that allows the host operating 8472 8473system software to override the DSDT found in the firmware - 8474AcpiOsTableOverride. With this interface, the OSL can examine the 8475version of the firmware DSDT and replace it with a different one 8476if desired. 8477 8478Added new external interfaces for accessing ACPI registers from 8479device drivers and other system software - AcpiGetRegister and 8480AcpiSetRegister. This was simply an externalization of the 8481existing AcpiHwBitRegister interfaces. 8482 8483Fixed a regression introduced in the previous build where the 8484ASL/AML CreateField operator always returned an error, 8485"destination must be a NS Node". 8486 8487Extended the maximum time (before failure) to successfully enable 8488ACPI mode to 3 seconds. 8489 8490Code and Data Size: Current core subsystem library sizes are shown 8491below. These are the code and data sizes for the acpica.lib 8492produced by the Microsoft Visual C++ 6.0 compiler, and these 8493values do not include any ACPI driver or OSPM code. The debug 8494version of the code includes the debug output trace mechanism and 8495has a larger code and data size. Note that these values will vary 8496depending on the efficiency of the compiler and the compiler 8497options used during generation. 8498 8499 Previous Release 8500 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8501 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8502 Current Release: 8503 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8504 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8505 8506 85072) Linux 8508 8509Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8510free. While 3 out of 4 of our in-house systems work fine, the last 8511one still hangs when testing the LAPIC timer. 8512 8513Renamed many files in 2.5 kernel release to omit "acpi_" from the 8514name. 8515 8516Added warning on boot for Presario 711FR. 8517 8518Sleep improvements (Pavel Machek) 8519 8520ACPI can now be built without CONFIG_PCI enabled. 8521 8522IA64: Fixed memory map functions (JI Lee) 8523 8524 85253) iASL Compiler Version X2043: 8526 8527Added support to allow the compiler to be integrated into the MS 8528VC++ development environment for one-button compilation of single 8529files or entire projects -- with error-to-source-line mapping. 8530 8531Implemented support for compile-time constant folding for the 8532Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8533specification. This allows the ASL writer to use expressions 8534instead of Integer/Buffer/String constants in terms that must 8535evaluate to constants at compile time and will also simplify the 8536emitted AML in any such sub-expressions that can be folded 8537(evaluated at compile-time.) This increases the size of the 8538compiler significantly because a portion of the ACPI CA AML 8539interpreter is included within the compiler in order to pre- 8540evaluate constant expressions. 8541 8542 8543Fixed a problem with the "Unicode" ASL macro that caused the 8544compiler to fault. (This macro is used in conjunction with the 8545_STR reserved name.) 8546 8547Implemented an AML opcode optimization to use the Zero, One, and 8548Ones opcodes where possible to further reduce the size of integer 8549constants and thus reduce the overall size of the generated AML 8550code. 8551 8552Implemented error checking for new reserved terms for ACPI version 85532.0A. 8554 8555Implemented the -qr option to display the current list of ACPI 8556reserved names known to the compiler. 8557 8558Implemented the -qc option to display the current list of ASL 8559operators that are allowed within constant expressions and can 8560therefore be folded at compile time if the operands are constants. 8561 8562 85634) Documentation 8564 8565Updated the Programmer's Reference for new interfaces, data types, 8566and memory allocation model options. 8567 8568Updated the iASL Compiler User Reference to apply new format and 8569add information about new features and options. 8570 8571---------------------------------------- 857219 April 2002. Summary of changes for this release. 8573 85741) ACPI CA Core Subsystem Version 20020419: 8575 8576The source code base for the Core Subsystem has been completely 8577cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8578versions. The Lint option files used are included in the 8579/acpi/generate/lint directory. 8580 8581Implemented enhanced status/error checking across the entire 8582Hardware manager subsystem. Any hardware errors (reported from 8583the OSL) are now bubbled up and will abort a running control 8584method. 8585 8586 8587Fixed a problem where the per-ACPI-table integer width (32 or 64) 8588was stored only with control method nodes, causing a fault when 8589non-control method code was executed during table loading. The 8590solution implemented uses a global variable to indicate table 8591width across the entire ACPI subsystem. Therefore, ACPI CA does 8592not support mixed integer widths across different ACPI tables 8593(DSDT, SSDT). 8594 8595Fixed a problem where NULL extended fields (X fields) in an ACPI 85962.0 ACPI FADT caused the table load to fail. Although the 8597existing ACPI specification is a bit fuzzy on this topic, the new 8598behavior is to fall back on a ACPI 1.0 field if the corresponding 8599ACPI 2.0 X field is zero (even though the table revision indicates 8600a full ACPI 2.0 table.) The ACPI specification will be updated to 8601clarify this issue. 8602 8603Fixed a problem with the SystemMemory operation region handler 8604where memory was always accessed byte-wise even if the AML- 8605specified access width was larger than a byte. This caused 8606problems on systems with memory-mapped I/O. Memory is now 8607accessed with the width specified. On systems that do not support 8608non-aligned transfers, a check is made to guarantee proper address 8609alignment before proceeding in order to avoid an AML-caused 8610alignment fault within the kernel. 8611 8612 8613Fixed a problem with the ExtendedIrq resource where only one byte 8614of the 4-byte Irq field was extracted. 8615 8616Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8617function was out of date and required a rewrite. 8618 8619Code and Data Size: Current core subsystem library sizes are shown 8620below. These are the code and data sizes for the acpica.lib 8621produced by the Microsoft Visual C++ 6.0 compiler, and these 8622values do not include any ACPI driver or OSPM code. The debug 8623version of the code includes the debug output trace mechanism and 8624has a larger code and data size. Note that these values will vary 8625depending on the efficiency of the compiler and the compiler 8626options used during generation. 8627 8628 Previous Release 8629 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8630 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8631 Current Release: 8632 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8633 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8634 8635 86362) Linux 8637 8638PCI IRQ routing fixes (Dominik Brodowski) 8639 8640 86413) iASL Compiler Version X2042: 8642 8643Implemented an additional compile-time error check for a field 8644unit whose size + minimum access width would cause a run-time 8645access beyond the end-of-region. Previously, only the field size 8646itself was checked. 8647 8648The Core subsystem and iASL compiler now share a common parse 8649object in preparation for compile-time evaluation of the type 86503/4/5 ASL operators. 8651 8652 8653---------------------------------------- 8654Summary of changes for this release: 03_29_02 8655 86561) ACPI CA Core Subsystem Version 20020329: 8657 8658Implemented support for late evaluation of TermArg operands to 8659Buffer and Package objects. This allows complex expressions to be 8660used in the declarations of these object types. 8661 8662Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 86631.0, if the field was larger than 32 bits, it was returned as a 8664buffer - otherwise it was returned as an integer. In ACPI 2.0, 8665the field is returned as a buffer only if the field is larger than 866664 bits. The TableRevision is now considered when making this 8667conversion to avoid incompatibility with existing ASL code. 8668 8669Implemented logical addressing for AcpiOsGetRootPointer. This 8670allows an RSDP with either a logical or physical address. With 8671this support, the host OS can now override all ACPI tables with 8672one logical RSDP. Includes implementation of "typed" pointer 8673support to allow a common data type for both physical and logical 8674pointers internally. This required a change to the 8675AcpiOsGetRootPointer interface. 8676 8677Implemented the use of ACPI 2.0 Generic Address Structures for all 8678GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8679mapped I/O for these ACPI features. 8680 8681Initialization now ignores not only non-required tables (All 8682tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8683not validate the table headers of unrecognized tables. 8684 8685Fixed a problem where a notify handler could only be 8686installed/removed on an object of type Device. All "notify" 8687 8688objects are now supported -- Devices, Processor, Power, and 8689Thermal. 8690 8691Removed most verbosity from the ACPI_DB_INFO debug level. Only 8692critical information is returned when this debug level is enabled. 8693 8694Code and Data Size: Current core subsystem library sizes are shown 8695below. These are the code and data sizes for the acpica.lib 8696produced by the Microsoft Visual C++ 6.0 compiler, and these 8697values do not include any ACPI driver or OSPM code. The debug 8698version of the code includes the debug output trace mechanism and 8699has a larger code and data size. Note that these values will vary 8700depending on the efficiency of the compiler and the compiler 8701options used during generation. 8702 8703 Previous Release 8704 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8705 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8706 Current Release: 8707 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8708 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8709 8710 87112) Linux: 8712 8713The processor driver (acpi_processor.c) now fully supports ACPI 87142.0-based processor performance control (e.g. Intel(R) 8715SpeedStep(TM) technology) Note that older laptops that only have 8716the Intel "applet" interface are not supported through this. The 8717'limit' and 'performance' interface (/proc) are fully functional. 8718[Note that basic policy for controlling performance state 8719transitions will be included in the next version of ospmd.] The 8720idle handler was modified to more aggressively use C2, and PIIX4 8721errata handling underwent a complete overhaul (big thanks to 8722Dominik Brodowski). 8723 8724Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8725based devices in the ACPI namespace are now dynamically bound 8726(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8727This allows, among other things, ACPI to resolve bus numbers for 8728subordinate PCI bridges. 8729 8730Enhanced PCI IRQ routing to get the proper bus number for _PRT 8731entries defined underneath PCI bridges. 8732 8733Added IBM 600E to bad bios list due to invalid _ADR value for 8734PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8735 8736In the process of adding full MADT support (e.g. IOAPIC) for IA32 8737(acpi.c, mpparse.c) -- stay tuned. 8738 8739Added back visual differentiation between fixed-feature and 8740control-method buttons in dmesg. Buttons are also subtyped (e.g. 8741button/power/PWRF) to simplify button identification. 8742 8743We no longer use -Wno-unused when compiling debug. Please ignore 8744any "_THIS_MODULE defined but not used" messages. 8745 8746Can now shut down the system using "magic sysrq" key. 8747 8748 87493) iASL Compiler version 2041: 8750 8751Fixed a problem where conversion errors for hex/octal/decimal 8752constants were not reported. 8753 8754Implemented a fix for the General Register template Address field. 8755This field was 8 bits when it should be 64. 8756 8757Fixed a problem where errors/warnings were no longer being emitted 8758within the listing output file. 8759 8760Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8761exactly 4 characters, alphanumeric only. 8762 8763 8764 8765 8766---------------------------------------- 8767Summary of changes for this release: 03_08_02 8768 8769 87701) ACPI CA Core Subsystem Version 20020308: 8771 8772Fixed a problem with AML Fields where the use of the "AccessAny" 8773keyword could cause an interpreter error due to attempting to read 8774or write beyond the end of the parent Operation Region. 8775 8776Fixed a problem in the SystemMemory Operation Region handler where 8777an attempt was made to map memory beyond the end of the region. 8778This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8779errors on some Linux systems. 8780 8781Fixed a problem where the interpreter/namespace "search to root" 8782algorithm was not functioning for some object types. Relaxed the 8783internal restriction on the search to allow upsearches for all 8784external object types as well as most internal types. 8785 8786 87872) Linux: 8788 8789We now use safe_halt() macro versus individual calls to sti | hlt. 8790 8791Writing to the processor limit interface should now work. "echo 1" 8792will increase the limit, 2 will decrease, and 0 will reset to the 8793 8794default. 8795 8796 87973) ASL compiler: 8798 8799Fixed segfault on Linux version. 8800 8801 8802---------------------------------------- 8803Summary of changes for this release: 02_25_02 8804 88051) ACPI CA Core Subsystem: 8806 8807 8808Fixed a problem where the GPE bit masks were not initialized 8809properly, causing erratic GPE behavior. 8810 8811Implemented limited support for multiple calling conventions. The 8812code can be generated with either the VPL (variable parameter 8813list, or "C") convention, or the FPL (fixed parameter list, or 8814"Pascal") convention. The core subsystem is about 3.4% smaller 8815when generated with FPL. 8816 8817 88182) Linux 8819 8820Re-add some /proc/acpi/event functionality that was lost during 8821the rewrite 8822 8823Resolved issue with /proc events for fixed-feature buttons showing 8824up as the system device. 8825 8826Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8827 8828Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8829 8830Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8831 8832Fixed limit interface & usage to fix bugs with passive cooling 8833hysterisis. 8834 8835Restructured PRT support. 8836 8837 8838---------------------------------------- 8839Summary of changes for this label: 02_14_02 8840 8841 88421) ACPI CA Core Subsystem: 8843 8844Implemented support in AcpiLoadTable to allow loading of FACS and 8845FADT tables. 8846 8847Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8848been removed. All 64-bit platforms should be migrated to the ACPI 88492.0 tables. The actbl71.h header has been removed from the source 8850tree. 8851 8852All C macros defined within the subsystem have been prefixed with 8853"ACPI_" to avoid collision with other system include files. 8854 8855Removed the return value for the two AcpiOsPrint interfaces, since 8856it is never used and causes lint warnings for ignoring the return 8857value. 8858 8859Added error checking to all internal mutex acquire and release 8860calls. Although a failure from one of these interfaces is 8861probably a fatal system error, these checks will cause the 8862immediate abort of the currently executing method or interface. 8863 8864Fixed a problem where the AcpiSetCurrentResources interface could 8865fault. This was a side effect of the deployment of the new memory 8866allocation model. 8867 8868Fixed a couple of problems with the Global Lock support introduced 8869in the last major build. The "common" (1.0/2.0) internal FACS was 8870being overwritten with the FACS signature and clobbering the 8871Global Lock pointer. Also, the actual firmware FACS was being 8872unmapped after construction of the "common" FACS, preventing 8873access to the actual Global Lock field within it. The "common" 8874internal FACS is no longer installed as an actual ACPI table; it 8875is used simply as a global. 8876 8877Code and Data Size: Current core subsystem library sizes are shown 8878below. These are the code and data sizes for the acpica.lib 8879produced by the Microsoft Visual C++ 6.0 compiler, and these 8880values do not include any ACPI driver or OSPM code. The debug 8881version of the code includes the debug output trace mechanism and 8882has a larger code and data size. Note that these values will vary 8883depending on the efficiency of the compiler and the compiler 8884options used during generation. 8885 8886 Previous Release (02_07_01) 8887 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8888 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8889 Current Release: 8890 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8891 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8892 8893 88942) Linux 8895 8896Updated Linux-specific code for core macro and OSL interface 8897changes described above. 8898 8899Improved /proc/acpi/event. It now can be opened only once and has 8900proper poll functionality. 8901 8902Fixed and restructured power management (acpi_bus). 8903 8904Only create /proc "view by type" when devices of that class exist. 8905 8906Fixed "charging/discharging" bug (and others) in acpi_battery. 8907 8908Improved thermal zone code. 8909 8910 89113) ASL Compiler, version X2039: 8912 8913 8914Implemented the new compiler restriction on ASL String hex/octal 8915escapes to non-null, ASCII values. An error results if an invalid 8916value is used. (This will require an ACPI 2.0 specification 8917change.) 8918 8919AML object labels that are output to the optional C and ASM source 8920are now prefixed with both the ACPI table signature and table ID 8921to help guarantee uniqueness within a large BIOS project. 8922 8923 8924---------------------------------------- 8925Summary of changes for this label: 02_01_02 8926 89271) ACPI CA Core Subsystem: 8928 8929ACPI 2.0 support is complete in the entire Core Subsystem and the 8930ASL compiler. All new ACPI 2.0 operators are implemented and all 8931other changes for ACPI 2.0 support are complete. With 8932simultaneous code and data optimizations throughout the subsystem, 8933ACPI 2.0 support has been implemented with almost no additional 8934cost in terms of code and data size. 8935 8936Implemented a new mechanism for allocation of return buffers. If 8937the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8938be allocated on behalf of the caller. Consolidated all return 8939buffer validation and allocation to a common procedure. Return 8940buffers will be allocated via the primary OSL allocation interface 8941since it appears that a separate pool is not needed by most users. 8942If a separate pool is required for these buffers, the caller can 8943still use the original mechanism and pre-allocate the buffer(s). 8944 8945Implemented support for string operands within the DerefOf 8946operator. 8947 8948Restructured the Hardware and Event managers to be table driven, 8949simplifying the source code and reducing the amount of generated 8950code. 8951 8952Split the common read/write low-level ACPI register bitfield 8953procedure into a separate read and write, simplifying the code 8954considerably. 8955 8956Obsoleted the AcpiOsCallocate OSL interface. This interface was 8957used only a handful of times and didn't have enough critical mass 8958for a separate interface. Replaced with a common calloc procedure 8959in the core. 8960 8961Fixed a reported problem with the GPE number mapping mechanism 8962that allows GPE1 numbers to be non-contiguous with GPE0. 8963Reorganized the GPE information and shrunk a large array that was 8964originally large enough to hold info for all possible GPEs (256) 8965to simply large enough to hold all GPEs up to the largest GPE 8966number on the machine. 8967 8968Fixed a reported problem with resource structure alignment on 64- 8969bit platforms. 8970 8971Changed the AcpiEnableEvent and AcpiDisableEvent external 8972interfaces to not require any flags for the common case of 8973enabling/disabling a GPE. 8974 8975Implemented support to allow a "Notify" on a Processor object. 8976 8977Most TBDs in comments within the source code have been resolved 8978and eliminated. 8979 8980 8981Fixed a problem in the interpreter where a standalone parent 8982prefix (^) was not handled correctly in the interpreter and 8983debugger. 8984 8985Removed obsolete and unnecessary GPE save/restore code. 8986 8987Implemented Field support in the ASL Load operator. This allows a 8988table to be loaded from a named field, in addition to loading a 8989table directly from an Operation Region. 8990 8991Implemented timeout and handle support in the external Global Lock 8992interfaces. 8993 8994Fixed a problem in the AcpiDump utility where pathnames were no 8995longer being generated correctly during the dump of named objects. 8996 8997Modified the AML debugger to give a full display of if/while 8998predicates instead of just one AML opcode at a time. (The 8999predicate can have several nested ASL statements.) The old method 9000was confusing during single stepping. 9001 9002Code and Data Size: Current core subsystem library sizes are shown 9003below. These are the code and data sizes for the acpica.lib 9004produced by the Microsoft Visual C++ 6.0 compiler, and these 9005values do not include any ACPI driver or OSPM code. The debug 9006version of the code includes the debug output trace mechanism and 9007has a larger code and data size. Note that these values will vary 9008depending on the efficiency of the compiler and the compiler 9009options used during generation. 9010 9011 Previous Release (12_18_01) 9012 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9013 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9014 Current Release: 9015 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 9016 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 9017 90182) Linux 9019 9020 Implemented fix for PIIX reverse throttling errata (Processor 9021driver) 9022 9023Added new Limit interface (Processor and Thermal drivers) 9024 9025New thermal policy (Thermal driver) 9026 9027Many updates to /proc 9028 9029Battery "low" event support (Battery driver) 9030 9031Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 9032 9033IA32 - IA64 initialization unification, no longer experimental 9034 9035Menuconfig options redesigned 9036 90373) ASL Compiler, version X2037: 9038 9039Implemented several new output features to simplify integration of 9040AML code into firmware: 1) Output the AML in C source code with 9041labels for each named ASL object. The original ASL source code 9042is interleaved as C comments. 2) Output the AML in ASM source code 9043with labels and interleaved ASL source. 3) Output the AML in 9044raw hex table form, in either C or ASM. 9045 9046Implemented support for optional string parameters to the 9047LoadTable operator. 9048 9049Completed support for embedded escape sequences within string 9050literals. The compiler now supports all single character escapes 9051as well as the Octal and Hex escapes. Note: the insertion of a 9052null byte into a string literal (via the hex/octal escape) causes 9053the string to be immediately terminated. A warning is issued. 9054 9055Fixed a problem where incorrect AML was generated for the case 9056where an ASL namepath consists of a single parent prefix ( 9057 9058) with no trailing name segments. 9059 9060The compiler has been successfully generated with a 64-bit C 9061compiler. 9062 9063 9064 9065 9066---------------------------------------- 9067Summary of changes for this label: 12_18_01 9068 90691) Linux 9070 9071Enhanced blacklist with reason and severity fields. Any table's 9072signature may now be used to identify a blacklisted system. 9073 9074Call _PIC control method to inform the firmware which interrupt 9075model the OS is using. Turn on any disabled link devices. 9076 9077Cleaned up busmgr /proc error handling (Andreas Dilger) 9078 9079 2) ACPI CA Core Subsystem: 9080 9081Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 9082while loop) 9083 9084Completed implementation of the ACPI 2.0 "Continue", 9085"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 9086operators. All new ACPI 2.0 operators are now implemented in both 9087the ASL compiler and the AML interpreter. The only remaining ACPI 90882.0 task is support for the String data type in the DerefOf 9089operator. Fixed a problem with AcquireMutex where the status code 9090was lost if the caller had to actually wait for the mutex. 9091 9092Increased the maximum ASL Field size from 64K bits to 4G bits. 9093 9094Completed implementation of the external Global Lock interfaces -- 9095AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 9096Handler parameters were added. 9097 9098Completed another pass at removing warnings and issues when 9099compiling with 64-bit compilers. The code now compiles cleanly 9100with the Intel 64-bit C/C++ compiler. Most notably, the pointer 9101add and subtract (diff) macros have changed considerably. 9102 9103 9104Created and deployed a new ACPI_SIZE type that is 64-bits wide on 910564-bit platforms, 32-bits on all others. This type is used 9106wherever memory allocation and/or the C sizeof() operator is used, 9107and affects the OSL memory allocation interfaces AcpiOsAllocate 9108and AcpiOsCallocate. 9109 9110Implemented sticky user breakpoints in the AML debugger. 9111 9112Code and Data Size: Current core subsystem library sizes are shown 9113below. These are the code and data sizes for the acpica.lib 9114produced by the Microsoft Visual C++ 6.0 compiler, and these 9115values do not include any ACPI driver or OSPM code. The debug 9116version of the code includes the debug output trace mechanism and 9117has a larger code and data size. Note that these values will vary 9118depending on the efficiency of the compiler and the compiler 9119options used during generation. 9120 9121 Previous Release (12_05_01) 9122 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9123 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9124 Current Release: 9125 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 9126 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 9127 9128 3) ASL Compiler, version X2034: 9129 9130Now checks for (and generates an error if detected) the use of a 9131Break or Continue statement without an enclosing While statement. 9132 9133 9134Successfully generated the compiler with the Intel 64-bit C 9135compiler. 9136 9137 ---------------------------------------- 9138Summary of changes for this label: 12_05_01 9139 9140 1) ACPI CA Core Subsystem: 9141 9142The ACPI 2.0 CopyObject operator is fully implemented. This 9143operator creates a new copy of an object (and is also used to 9144bypass the "implicit conversion" mechanism of the Store operator.) 9145 9146The ACPI 2.0 semantics for the SizeOf operator are fully 9147implemented. The change is that performing a SizeOf on a 9148reference object causes an automatic dereference of the object to 9149tha actual value before the size is evaluated. This behavior was 9150undefined in ACPI 1.0. 9151 9152The ACPI 2.0 semantics for the Extended IRQ resource descriptor 9153have been implemented. The interrupt polarity and mode are now 9154independently set. 9155 9156Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 9157appearing in Package objects were not properly converted to 9158integers when the internal Package was converted to an external 9159object (via the AcpiEvaluateObject interface.) 9160 9161Fixed a problem with the namespace object deletion mechanism for 9162objects created by control methods. There were two parts to this 9163problem: 1) Objects created during the initialization phase method 9164parse were not being deleted, and 2) The object owner ID mechanism 9165to track objects was broken. 9166 9167Fixed a problem where the use of the ASL Scope operator within a 9168control method would result in an invalid opcode exception. 9169 9170Fixed a problem introduced in the previous label where the buffer 9171length required for the _PRT structure was not being returned 9172correctly. 9173 9174Code and Data Size: Current core subsystem library sizes are shown 9175below. These are the code and data sizes for the acpica.lib 9176produced by the Microsoft Visual C++ 6.0 compiler, and these 9177values do not include any ACPI driver or OSPM code. The debug 9178version of the code includes the debug output trace mechanism and 9179has a larger code and data size. Note that these values will vary 9180depending on the efficiency of the compiler and the compiler 9181options used during generation. 9182 9183 Previous Release (11_20_01) 9184 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9185 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9186 9187 Current Release: 9188 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 9189 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 9190 9191 2) Linux: 9192 9193Updated all files to apply cleanly against 2.4.16. 9194 9195Added basic PCI Interrupt Routing Table (PRT) support for IA32 9196(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 9197version supports both static and dyanmic PRT entries, but dynamic 9198entries are treated as if they were static (not yet 9199reconfigurable). Architecture- specific code to use this data is 9200absent on IA32 but should be available shortly. 9201 9202Changed the initialization sequence to start the ACPI interpreter 9203(acpi_init) prior to initialization of the PCI driver (pci_init) 9204in init/main.c. This ordering is required to support PRT and 9205facilitate other (future) enhancement. A side effect is that the 9206ACPI bus driver and certain device drivers can no longer be loaded 9207as modules. 9208 9209Modified the 'make menuconfig' options to allow PCI Interrupt 9210Routing support to be included without the ACPI Bus and other 9211device drivers. 9212 9213 3) ASL Compiler, version X2033: 9214 9215Fixed some issues with the use of the new CopyObject and 9216DataTableRegion operators. Both are fully functional. 9217 9218 ---------------------------------------- 9219Summary of changes for this label: 11_20_01 9220 9221 20 November 2001. Summary of changes for this release. 9222 9223 1) ACPI CA Core Subsystem: 9224 9225Updated Index support to match ACPI 2.0 semantics. Storing a 9226Integer, String, or Buffer to an Index of a Buffer will store only 9227the least-significant byte of the source to the Indexed buffer 9228byte. Multiple writes are not performed. 9229 9230Fixed a problem where the access type used in an AccessAs ASL 9231operator was not recorded correctly into the field object. 9232 9233Fixed a problem where ASL Event objects were created in a 9234signalled state. Events are now created in an unsignalled state. 9235 9236The internal object cache is now purged after table loading and 9237initialization to reduce the use of dynamic kernel memory -- on 9238the assumption that object use is greatest during the parse phase 9239of the entire table (versus the run-time use of individual control 9240methods.) 9241 9242ACPI 2.0 variable-length packages are now fully operational. 9243 9244Code and Data Size: Code and Data optimizations have permitted new 9245feature development with an actual reduction in the library size. 9246Current core subsystem library sizes are shown below. These are 9247the code and data sizes for the acpica.lib produced by the 9248Microsoft Visual C++ 6.0 compiler, and these values do not include 9249any ACPI driver or OSPM code. The debug version of the code 9250includes the debug output trace mechanism and has a larger code 9251and data size. Note that these values will vary depending on the 9252efficiency of the compiler and the compiler options used during 9253generation. 9254 9255 Previous Release (11_09_01): 9256 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9257 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9258 9259 Current Release: 9260 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 9261 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 9262 9263 2) Linux: 9264 9265Enhanced the ACPI boot-time initialization code to allow the use 9266of Local APIC tables for processor enumeration on IA-32, and to 9267pave the way for a fully MPS-free boot (on SMP systems) in the 9268near future. This functionality replaces 9269arch/i386/kernel/acpitables.c, which was introduced in an earlier 92702.4.15-preX release. To enable this feature you must add 9271"acpi_boot=on" to the kernel command line -- see the help entry 9272for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 9273the works... 9274 9275Restructured the configuration options to allow boot-time table 9276parsing support without inclusion of the ACPI Interpreter (and 9277other) code. 9278 9279NOTE: This release does not include fixes for the reported events, 9280power-down, and thermal passive cooling issues (coming soon). 9281 9282 3) ASL Compiler: 9283 9284Added additional typechecking for Fields within restricted access 9285Operation Regions. All fields within EC and CMOS regions must be 9286declared with ByteAcc. All fields withing SMBus regions must be 9287declared with the BufferAcc access type. 9288 9289Fixed a problem where the listing file output of control methods 9290no longer interleaved the actual AML code with the ASL source 9291code. 9292 9293 9294 9295 9296---------------------------------------- 9297Summary of changes for this label: 11_09_01 9298 92991) ACPI CA Core Subsystem: 9300 9301Implemented ACPI 2.0-defined support for writes to fields with a 9302Buffer, String, or Integer source operand that is smaller than the 9303target field. In these cases, the source operand is zero-extended 9304to fill the target field. 9305 9306Fixed a problem where a Field starting bit offset (within the 9307parent operation region) was calculated incorrectly if the 9308 9309alignment of the field differed from the access width. This 9310affected CreateWordField, CreateDwordField, CreateQwordField, and 9311possibly other fields that use the "AccessAny" keyword. 9312 9313Fixed a problem introduced in the 11_02_01 release where indirect 9314stores through method arguments did not operate correctly. 9315 93162) Linux: 9317 9318Implemented boot-time ACPI table parsing support 9319(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9320facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9321legacy BIOS interfaces (e.g. MPS) for the configuration of system 9322processors, memory, and interrupts during setup_arch(). Note that 9323this patch does not include the required architecture-specific 9324changes required to apply this information -- subsequent patches 9325will be posted for both IA32 and IA64 to achieve this. 9326 9327Added low-level sleep support for IA32 platforms, courtesy of Pat 9328Mochel. This allows IA32 systems to transition to/from various 9329sleeping states (e.g. S1, S3), although the lack of a centralized 9330driver model and power-manageable drivers will prevent its 9331(successful) use on most systems. 9332 9333Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9334submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9335tables" option, etc. 9336 9337Increased the default timeout for the EC driver from 1ms to 10ms 9338(1000 cycles of 10us) to try to address AE_TIME errors during EC 9339transactions. 9340 9341 ---------------------------------------- 9342Summary of changes for this label: 11_02_01 9343 93441) ACPI CA Core Subsystem: 9345 9346ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9347(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9348implemented. 9349 9350OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9351changes to support ACPI 2.0 Qword field access. Read/Write 9352PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9353accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9354the value parameter for the address space handler interface is now 9355an ACPI_INTEGER. OSL implementations of these interfaces must now 9356handle the case where the Width parameter is 64. 9357 9358Index Fields: Fixed a problem where unaligned bit assembly and 9359disassembly for IndexFields was not supported correctly. 9360 9361Index and Bank Fields: Nested Index and Bank Fields are now 9362supported. During field access, a check is performed to ensure 9363that the value written to an Index or Bank register is not out of 9364the range of the register. The Index (or Bank) register is 9365written before each access to the field data. Future support will 9366include allowing individual IndexFields to be wider than the 9367DataRegister width. 9368 9369Fields: Fixed a problem where the AML interpreter was incorrectly 9370attempting to write beyond the end of a Field/OpRegion. This was 9371a boundary case that occurred when a DWORD field was written to a 9372BYTE access OpRegion, forcing multiple writes and causing the 9373interpreter to write one datum too many. 9374 9375Fields: Fixed a problem with Field/OpRegion access where the 9376starting bit address of a field was incorrectly calculated if the 9377current access type was wider than a byte (WordAcc, DwordAcc, or 9378QwordAcc). 9379 9380Fields: Fixed a problem where forward references to individual 9381FieldUnits (individual Field names within a Field definition) were 9382not resolved during the AML table load. 9383 9384Fields: Fixed a problem where forward references from a Field 9385definition to the parent Operation Region definition were not 9386resolved during the AML table load. 9387 9388Fields: Duplicate FieldUnit names within a scope are now detected 9389during AML table load. 9390 9391Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9392returned an incorrect name for the root node. 9393 9394Code and Data Size: Code and Data optimizations have permitted new 9395feature development with an actual reduction in the library size. 9396Current core subsystem library sizes are shown below. These are 9397the code and data sizes for the acpica.lib produced by the 9398Microsoft Visual C++ 6.0 compiler, and these values do not include 9399any ACPI driver or OSPM code. The debug version of the code 9400includes the debug output trace mechanism and has a larger code 9401and data size. Note that these values will vary depending on the 9402efficiency of the compiler and the compiler options used during 9403generation. 9404 9405 Previous Release (10_18_01): 9406 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9407 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9408 9409 Current Release: 9410 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9411 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9412 9413 2) Linux: 9414 9415Improved /proc processor output (Pavel Machek) Re-added 9416MODULE_LICENSE("GPL") to all modules. 9417 9418 3) ASL Compiler version X2030: 9419 9420Duplicate FieldUnit names within a scope are now detected and 9421flagged as errors. 9422 9423 4) Documentation: 9424 9425Programmer Reference updated to reflect OSL and address space 9426handler interface changes described above. 9427 9428---------------------------------------- 9429Summary of changes for this label: 10_18_01 9430 9431ACPI CA Core Subsystem: 9432 9433Fixed a problem with the internal object reference count mechanism 9434that occasionally caused premature object deletion. This resolves 9435all of the outstanding problem reports where an object is deleted 9436in the middle of an interpreter evaluation. Although this problem 9437only showed up in rather obscure cases, the solution to the 9438problem involved an adjustment of all reference counts involving 9439objects attached to namespace nodes. 9440 9441Fixed a problem with Field support in the interpreter where 9442writing to an aligned field whose length is an exact multiple (2 9443or greater) of the field access granularity would cause an attempt 9444to write beyond the end of the field. 9445 9446The top level AML opcode execution functions within the 9447interpreter have been renamed with a more meaningful and 9448consistent naming convention. The modules exmonad.c and 9449exdyadic.c were eliminated. New modules are exoparg1.c, 9450exoparg2.c, exoparg3.c, and exoparg6.c. 9451 9452Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9453 9454Fixed a problem where the AML debugger was causing some internal 9455objects to not be deleted during subsystem termination. 9456 9457Fixed a problem with the external AcpiEvaluateObject interface 9458where the subsystem would fault if the named object to be 9459evaluated refered to a constant such as Zero, Ones, etc. 9460 9461Fixed a problem with IndexFields and BankFields where the 9462subsystem would fault if the index, data, or bank registers were 9463not defined in the same scope as the field itself. 9464 9465Added printf format string checking for compilers that support 9466this feature. Corrected more than 50 instances of issues with 9467format specifiers within invocations of ACPI_DEBUG_PRINT 9468throughout the core subsystem code. 9469 9470The ASL "Revision" operator now returns the ACPI support level 9471implemented in the core - the value "2" since the ACPI 2.0 support 9472is more than 50% implemented. 9473 9474Enhanced the output of the AML debugger "dump namespace" command 9475to output in a more human-readable form. 9476 9477Current core subsystem library code sizes are shown below. These 9478 9479are the code and data sizes for the acpica.lib produced by the 9480Microsoft Visual C++ 6.0 compiler, and these values do not include 9481any ACPI driver or OSPM code. The debug version of the code 9482includes the full debug trace mechanism -- leading to a much 9483 9484larger code and data size. Note that these values will vary 9485depending on the efficiency of the compiler and the compiler 9486options used during generation. 9487 9488 Previous Label (09_20_01): 9489 Non-Debug Version: 65K Code, 5K Data, 70K Total 9490 Debug Version: 138K Code, 58K Data, 196K Total 9491 9492 This Label: 9493 9494 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9495 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9496 9497Linux: 9498 9499Implemented a "Bad BIOS Blacklist" to track machines that have 9500known ASL/AML problems. 9501 9502Enhanced the /proc interface for the thermal zone driver and added 9503support for _HOT (the critical suspend trip point). The 'info' 9504file now includes threshold/policy information, and allows setting 9505of _SCP (cooling preference) and _TZP (polling frequency) values 9506to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9507frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9508preference to the passive/quiet mode (if supported by the ASL). 9509 9510Implemented a workaround for a gcc bug that resuted in an OOPs 9511when loading the control method battery driver. 9512 9513 ---------------------------------------- 9514Summary of changes for this label: 09_20_01 9515 9516 ACPI CA Core Subsystem: 9517 9518The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9519modified to allow individual GPE levels to be flagged as wake- 9520enabled (i.e., these GPEs are to remain enabled when the platform 9521sleeps.) 9522 9523The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9524support wake-enabled GPEs. This means that upon entering the 9525sleep state, all GPEs that are not wake-enabled are disabled. 9526When leaving the sleep state, these GPEs are reenabled. 9527 9528A local double-precision divide/modulo module has been added to 9529enhance portability to OS kernels where a 64-bit math library is 9530not available. The new module is "utmath.c". 9531 9532Several optimizations have been made to reduce the use of CPU 9533stack. Originally over 2K, the maximum stack usage is now below 95342K at 1860 bytes (1.82k) 9535 9536Fixed a problem with the AcpiGetFirmwareTable interface where the 9537root table pointer was not mapped into a logical address properly. 9538 9539Fixed a problem where a NULL pointer was being dereferenced in the 9540interpreter code for the ASL Notify operator. 9541 9542Fixed a problem where the use of the ASL Revision operator 9543returned an error. This operator now returns the current version 9544of the ACPI CA core subsystem. 9545 9546Fixed a problem where objects passed as control method parameters 9547to AcpiEvaluateObject were always deleted at method termination. 9548However, these objects may end up being stored into the namespace 9549by the called method. The object reference count mechanism was 9550applied to these objects instead of a force delete. 9551 9552Fixed a problem where static strings or buffers (contained in the 9553AML code) that are declared as package elements within the ASL 9554code could cause a fault because the interpreter would attempt to 9555delete them. These objects are now marked with the "static 9556object" flag to prevent any attempt to delete them. 9557 9558Implemented an interpreter optimization to use operands directly 9559from the state object instead of extracting the operands to local 9560variables. This reduces stack use and code size, and improves 9561performance. 9562 9563The module exxface.c was eliminated as it was an unnecessary extra 9564layer of code. 9565 9566Current core subsystem library code sizes are shown below. These 9567are the code and data sizes for the acpica.lib produced by the 9568Microsoft Visual C++ 6.0 compiler, and these values do not include 9569any ACPI driver or OSPM code. The debug version of the code 9570includes the full debug trace mechanism -- leading to a much 9571larger code and data size. Note that these values will vary 9572depending on the efficiency of the compiler and the compiler 9573options used during generation. 9574 9575 Non-Debug Version: 65K Code, 5K Data, 70K Total 9576(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9577Total (Previously 195K) 9578 9579Linux: 9580 9581Support for ACPI 2.0 64-bit integers has been added. All ACPI 9582Integer objects are now 64 bits wide 9583 9584All Acpi data types and structures are now in lower case. Only 9585Acpi macros are upper case for differentiation. 9586 9587 Documentation: 9588 9589Changes to the external interfaces as described above. 9590 9591 ---------------------------------------- 9592Summary of changes for this label: 08_31_01 9593 9594 ACPI CA Core Subsystem: 9595 9596A bug with interpreter implementation of the ASL Divide operator 9597was found and fixed. The implicit function return value (not the 9598explicit store operands) was returning the remainder instead of 9599the quotient. This was a longstanding bug and it fixes several 9600known outstanding issues on various platforms. 9601 9602The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9603been further optimized for size. There are 700 invocations of the 9604DEBUG_PRINT macro alone, so each optimization reduces the size of 9605the debug version of the subsystem significantly. 9606 9607A stack trace mechanism has been implemented. The maximum stack 9608usage is about 2K on 32-bit platforms. The debugger command "stat 9609stack" will display the current maximum stack usage. 9610 9611All public symbols and global variables within the subsystem are 9612now prefixed with the string "Acpi". This keeps all of the 9613symbols grouped together in a kernel map, and avoids conflicts 9614with other kernel subsystems. 9615 9616Most of the internal fixed lookup tables have been moved into the 9617code segment via the const operator. 9618 9619Several enhancements have been made to the interpreter to both 9620reduce the code size and improve performance. 9621 9622Current core subsystem library code sizes are shown below. These 9623are the code and data sizes for the acpica.lib produced by the 9624Microsoft Visual C++ 6.0 compiler, and these values do not include 9625any ACPI driver or OSPM code. The debug version of the code 9626includes the full debug trace mechanism which contains over 700 9627invocations of the DEBUG_PRINT macro, 500 function entry macro 9628invocations, and over 900 function exit macro invocations -- 9629leading to a much larger code and data size. Note that these 9630values will vary depending on the efficiency of the compiler and 9631the compiler options used during generation. 9632 9633 Non-Debug Version: 64K Code, 5K Data, 69K Total 9634Debug Version: 137K Code, 58K Data, 195K Total 9635 9636 Linux: 9637 9638Implemented wbinvd() macro, pending a kernel-wide definition. 9639 9640Fixed /proc/acpi/event to handle poll() and short reads. 9641 9642 ASL Compiler, version X2026: 9643 9644Fixed a problem introduced in the previous label where the AML 9645 9646code emitted for package objects produced packages with zero 9647length. 9648 9649 ---------------------------------------- 9650Summary of changes for this label: 08_16_01 9651 9652ACPI CA Core Subsystem: 9653 9654The following ACPI 2.0 ASL operators have been implemented in the 9655AML interpreter (These are already supported by the Intel ASL 9656compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9657ToBuffer. Support for 64-bit AML constants is implemented in the 9658AML parser, debugger, and disassembler. 9659 9660The internal memory tracking mechanism (leak detection code) has 9661been upgraded to reduce the memory overhead (a separate tracking 9662block is no longer allocated for each memory allocation), and now 9663supports all of the internal object caches. 9664 9665The data structures and code for the internal object caches have 9666been coelesced and optimized so that there is a single cache and 9667memory list data structure and a single group of functions that 9668implement generic cache management. This has reduced the code 9669size in both the debug and release versions of the subsystem. 9670 9671The DEBUG_PRINT macro(s) have been optimized for size and replaced 9672by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9673different, because it generates a single call to an internal 9674function. This results in a savings of about 90 bytes per 9675invocation, resulting in an overall code and data savings of about 967616% in the debug version of the subsystem. 9677 9678 Linux: 9679 9680Fixed C3 disk corruption problems and re-enabled C3 on supporting 9681machines. 9682 9683Integrated low-level sleep code by Patrick Mochel. 9684 9685Further tweaked source code Linuxization. 9686 9687Other minor fixes. 9688 9689 ASL Compiler: 9690 9691Support for ACPI 2.0 variable length packages is fixed/completed. 9692 9693Fixed a problem where the optional length parameter for the ACPI 96942.0 ToString operator. 9695 9696Fixed multiple extraneous error messages when a syntax error is 9697detected within the declaration line of a control method. 9698 9699 ---------------------------------------- 9700Summary of changes for this label: 07_17_01 9701 9702ACPI CA Core Subsystem: 9703 9704Added a new interface named AcpiGetFirmwareTable to obtain any 9705ACPI table via the ACPI signature. The interface can be called at 9706any time during kernel initialization, even before the kernel 9707virtual memory manager is initialized and paging is enabled. This 9708allows kernel subsystems to obtain ACPI tables very early, even 9709before the ACPI CA subsystem is initialized. 9710 9711Fixed a problem where Fields defined with the AnyAcc attribute 9712could be resolved to the incorrect address under the following 9713conditions: 1) the field width is larger than 8 bits and 2) the 9714parent operation region is not defined on a DWORD boundary. 9715 9716Fixed a problem where the interpreter is not being locked during 9717namespace initialization (during execution of the _INI control 9718methods), causing an error when an attempt is made to release it 9719later. 9720 9721ACPI 2.0 support in the AML Interpreter has begun and will be 9722ongoing throughout the rest of this year. In this label, The Mod 9723operator is implemented. 9724 9725Added a new data type to contain full PCI addresses named 9726ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9727and Function values. 9728 9729 Linux: 9730 9731Enhanced the Linux version of the source code to change most 9732capitalized ACPI type names to lowercase. For example, all 9733instances of ACPI_STATUS are changed to acpi_status. This will 9734result in a large diff, but the change is strictly cosmetic and 9735aligns the CA code closer to the Linux coding standard. 9736 9737OSL Interfaces: 9738 9739The interfaces to the PCI configuration space have been changed to 9740add the PCI Segment number and to split the single 32-bit combined 9741DeviceFunction field into two 16-bit fields. This was 9742accomplished by moving the four values that define an address in 9743PCI configuration space (segment, bus, device, and function) to 9744the new ACPI_PCI_ID structure. 9745 9746The changes to the PCI configuration space interfaces led to a 9747reexamination of the complete set of address space access 9748interfaces for PCI, I/O, and Memory. The previously existing 18 9749interfaces have proven difficult to maintain (any small change 9750must be propagated across at least 6 interfaces) and do not easily 9751allow for future expansion to 64 bits if necessary. Also, on some 9752systems, it would not be appropriate to demultiplex the access 9753width (8, 16, 32,or 64) before calling the OSL if the 9754corresponding native OS interfaces contain a similar access width 9755parameter. For these reasons, the 18 address space interfaces 9756have been replaced by these 6 new ones: 9757 9758AcpiOsReadPciConfiguration 9759AcpiOsWritePciConfiguration 9760AcpiOsReadMemory 9761AcpiOsWriteMemory 9762AcpiOsReadPort 9763AcpiOsWritePort 9764 9765Added a new interface named AcpiOsGetRootPointer to allow the OSL 9766to perform the platform and/or OS-specific actions necessary to 9767obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9768interface will simply call down to the CA core to perform the low- 9769memory search for the table. On IA-64, the RSDP is obtained from 9770EFI. Migrating this interface to the OSL allows the CA core to 9771 9772remain OS and platform independent. 9773 9774Added a new interface named AcpiOsSignal to provide a generic 9775"function code and pointer" interface for various miscellaneous 9776signals and notifications that must be made to the host OS. The 9777first such signals are intended to support the ASL Fatal and 9778Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9779interface has been obsoleted. 9780 9781The definition of the AcpiFormatException interface has been 9782changed to simplify its use. The caller no longer must supply a 9783buffer to the call; A pointer to a const string is now returned 9784directly. This allows the call to be easily used in printf 9785statements, etc. since the caller does not have to manage a local 9786buffer. 9787 9788 9789 ASL Compiler, Version X2025: 9790 9791The ACPI 2.0 Switch/Case/Default operators have been implemented 9792and are fully functional. They will work with all ACPI 1.0 9793interpreters, since the operators are simply translated to If/Else 9794pairs. 9795 9796The ACPI 2.0 ElseIf operator is implemented and will also work 9797with 1.0 interpreters, for the same reason. 9798 9799Implemented support for ACPI 2.0 variable-length packages. These 9800packages have a separate opcode, and their size is determined by 9801the interpreter at run-time. 9802 9803Documentation The ACPI CA Programmer Reference has been updated to 9804reflect the new interfaces and changes to existing interfaces. 9805 9806 ------------------------------------------ 9807Summary of changes for this label: 06_15_01 9808 9809 ACPI CA Core Subsystem: 9810 9811Fixed a problem where a DWORD-accessed field within a Buffer 9812object would get its byte address inadvertently rounded down to 9813the nearest DWORD. Buffers are always Byte-accessible. 9814 9815 ASL Compiler, version X2024: 9816 9817Fixed a problem where the Switch() operator would either fault or 9818hang the compiler. Note however, that the AML code for this ACPI 98192.0 operator is not yet implemented. 9820 9821Compiler uses the new AcpiOsGetTimer interface to obtain compile 9822timings. 9823 9824Implementation of the CreateField operator automatically converts 9825a reference to a named field within a resource descriptor from a 9826byte offset to a bit offset if required. 9827 9828Added some missing named fields from the resource descriptor 9829support. These are the names that are automatically created by the 9830compiler to reference fields within a descriptor. They are only 9831valid at compile time and are not passed through to the AML 9832interpreter. 9833 9834Resource descriptor named fields are now typed as Integers and 9835subject to compile-time typechecking when used in expressions. 9836 9837 ------------------------------------------ 9838Summary of changes for this label: 05_18_01 9839 9840 ACPI CA Core Subsystem: 9841 9842Fixed a couple of problems in the Field support code where bits 9843from adjacent fields could be returned along with the proper field 9844bits. Restructured the field support code to improve performance, 9845readability and maintainability. 9846 9847New DEBUG_PRINTP macro automatically inserts the procedure name 9848into the output, saving hundreds of copies of procedure name 9849strings within the source, shrinking the memory footprint of the 9850debug version of the core subsystem. 9851 9852 Source Code Structure: 9853 9854The source code directory tree was restructured to reflect the 9855current organization of the component architecture. Some files 9856and directories have been moved and/or renamed. 9857 9858 Linux: 9859 9860Fixed leaking kacpidpc processes. 9861 9862Fixed queueing event data even when /proc/acpi/event is not 9863opened. 9864 9865 ASL Compiler, version X2020: 9866 9867Memory allocation performance enhancement - over 24X compile time 9868improvement on large ASL files. Parse nodes and namestring 9869buffers are now allocated from a large internal compiler buffer. 9870 9871The temporary .SRC file is deleted unless the "-s" option is 9872specified 9873 9874The "-d" debug output option now sends all output to the .DBG file 9875instead of the console. 9876 9877"External" second parameter is now optional 9878 9879"ElseIf" syntax now properly allows the predicate 9880 9881Last operand to "Load" now recognized as a Target operand 9882 9883Debug object can now be used anywhere as a normal object. 9884 9885ResourceTemplate now returns an object of type BUFFER 9886 9887EISAID now returns an object of type INTEGER 9888 9889"Index" now works with a STRING operand 9890 9891"LoadTable" now accepts optional parameters 9892 9893"ToString" length parameter is now optional 9894 9895"Interrupt (ResourceType," parse error fixed. 9896 9897"Register" with a user-defined region space parse error fixed 9898 9899Escaped backslash at the end of a string ("\\") scan/parse error 9900fixed 9901 9902"Revision" is now an object of type INTEGER. 9903 9904 9905 9906------------------------------------------ 9907Summary of changes for this label: 05_02_01 9908 9909Linux: 9910 9911/proc/acpi/event now blocks properly. 9912 9913Removed /proc/sys/acpi. You can still dump your DSDT from 9914/proc/acpi/dsdt. 9915 9916 ACPI CA Core Subsystem: 9917 9918Fixed a problem introduced in the previous label where some of the 9919"small" resource descriptor types were not recognized. 9920 9921Improved error messages for the case where an ASL Field is outside 9922the range of the parent operation region. 9923 9924 ASL Compiler, version X2018: 9925 9926 9927Added error detection for ASL Fields that extend beyond the length 9928of the parent operation region (only if the length of the region 9929is known at compile time.) This includes fields that have a 9930minimum access width that is smaller than the parent region, and 9931individual field units that are partially or entirely beyond the 9932extent of the parent. 9933 9934 9935 9936------------------------------------------ 9937Summary of changes for this label: 04_27_01 9938 9939 ACPI CA Core Subsystem: 9940 9941Fixed a problem where the namespace mutex could be released at the 9942wrong time during execution of AcpiRemoveAddressSpaceHandler. 9943 9944Added optional thread ID output for debug traces, to simplify 9945debugging of multiple threads. Added context switch notification 9946when the debug code realizes that a different thread is now 9947executing ACPI code. 9948 9949Some additional external data types have been prefixed with the 9950string "ACPI_" for consistency. This may effect existing code. 9951The data types affected are the external callback typedefs - e.g., 9952 9953WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9954 9955 Linux: 9956 9957Fixed an issue with the OSL semaphore implementation where a 9958thread was waking up with an error from receiving a SIGCHLD 9959signal. 9960 9961Linux version of ACPI CA now uses the system C library for string 9962manipulation routines instead of a local implementation. 9963 9964Cleaned up comments and removed TBDs. 9965 9966 ASL Compiler, version X2017: 9967 9968Enhanced error detection and reporting for all file I/O 9969operations. 9970 9971 Documentation: 9972 9973Programmer Reference updated to version 1.06. 9974 9975 9976 9977------------------------------------------ 9978Summary of changes for this label: 04_13_01 9979 9980 ACPI CA Core Subsystem: 9981 9982Restructured support for BufferFields and RegionFields. 9983BankFields support is now fully operational. All known 32-bit 9984limitations on field sizes have been removed. Both BufferFields 9985and (Operation) RegionFields are now supported by the same field 9986management code. 9987 9988Resource support now supports QWORD address and IO resources. The 998916/32/64 bit address structures and the Extended IRQ structure 9990have been changed to properly handle Source Resource strings. 9991 9992A ThreadId of -1 is now used to indicate a "mutex not acquired" 9993condition internally and must never be returned by AcpiOsThreadId. 9994This reserved value was changed from 0 since Unix systems allow a 9995thread ID of 0. 9996 9997Linux: 9998 9999Driver code reorganized to enhance portability 10000 10001Added a kernel configuration option to control ACPI_DEBUG 10002 10003Fixed the EC driver to honor _GLK. 10004 10005ASL Compiler, version X2016: 10006 10007Fixed support for the "FixedHw" keyword. Previously, the FixedHw 10008address space was set to 0, not 0x7f as it should be. 10009 10010 ------------------------------------------ 10011Summary of changes for this label: 03_13_01 10012 10013 ACPI CA Core Subsystem: 10014 10015During ACPI initialization, the _SB_._INI method is now run if 10016present. 10017 10018Notify handler fix - notifies are deferred until the parent method 10019completes execution. This fixes the "mutex already acquired" 10020issue seen occasionally. 10021 10022Part of the "implicit conversion" rules in ACPI 2.0 have been 10023found to cause compatibility problems with existing ASL/AML. The 10024convert "result-to-target-type" implementation has been removed 10025for stores to method Args and Locals. Source operand conversion 10026is still fully implemented. Possible changes to ACPI 2.0 10027specification pending. 10028 10029Fix to AcpiRsCalculatePciRoutingTableLength to return correct 10030length. 10031 10032Fix for compiler warnings for 64-bit compiles. 10033 10034 Linux: 10035 10036/proc output aligned for easier parsing. 10037 10038Release-version compile problem fixed. 10039 10040New kernel configuration options documented in Configure.help. 10041 10042IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 10043context" message. 10044 10045 OSPM: 10046 10047Power resource driver integrated with bus manager. 10048 10049Fixed kernel fault during active cooling for thermal zones. 10050 10051Source Code: 10052 10053The source code tree has been restructured. 10054 10055 10056 10057------------------------------------------ 10058Summary of changes for this label: 03_02_01 10059 10060 Linux OS Services Layer (OSL): 10061 10062Major revision of all Linux-specific code. 10063 10064Modularized all ACPI-specific drivers. 10065 10066Added new thermal zone and power resource drivers. 10067 10068Revamped /proc interface (new functionality is under /proc/acpi). 10069 10070New kernel configuration options. 10071 10072 Linux known issues: 10073 10074New kernel configuration options not documented in Configure.help 10075yet. 10076 10077 10078Module dependencies not currently implemented. If used, they 10079should be loaded in this order: busmgr, power, ec, system, 10080processor, battery, ac_adapter, button, thermal. 10081 10082Modules will not load if CONFIG_MODVERSION is set. 10083 10084IBM 600E - entering S5 may reboot instead of shutting down. 10085 10086IBM 600E - Sleep button may generate "Invalid <NULL> context" 10087message. 10088 10089Some systems may fail with "execution mutex already acquired" 10090message. 10091 10092 ACPI CA Core Subsystem: 10093 10094Added a new OSL Interface, AcpiOsGetThreadId. This was required 10095for the deadlock detection code. Defined to return a non-zero, 32- 10096bit thread ID for the currently executing thread. May be a non- 10097zero constant integer on single-thread systems. 10098 10099Implemented deadlock detection for internal subsystem mutexes. We 10100may add conditional compilation for this code (debug only) later. 10101 10102ASL/AML Mutex object semantics are now fully supported. This 10103includes multiple acquires/releases by owner and support for the 10104 10105Mutex SyncLevel parameter. 10106 10107A new "Force Release" mechanism automatically frees all ASL 10108Mutexes that have been acquired but not released when a thread 10109exits the interpreter. This forces conformance to the ACPI spec 10110("All mutexes must be released when an invocation exits") and 10111prevents deadlocked ASL threads. This mechanism can be expanded 10112(later) to monitor other resource acquisitions if OEM ASL code 10113continues to misbehave (which it will). 10114 10115Several new ACPI exception codes have been added for the Mutex 10116support. 10117 10118Recursive method calls are now allowed and supported (the ACPI 10119spec does in fact allow recursive method calls.) The number of 10120recursive calls is subject to the restrictions imposed by the 10121SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 10122parameter. 10123 10124Implemented support for the SyncLevel parameter for control 10125methods (ACPI 2.0 feature) 10126 10127Fixed a deadlock problem when multiple threads attempted to use 10128the interpreter. 10129 10130Fixed a problem where the string length of a String package 10131element was not always set in a package returned from 10132AcpiEvaluateObject. 10133 10134Fixed a problem where the length of a String package element was 10135not always included in the length of the overall package returned 10136from AcpiEvaluateObject. 10137 10138Added external interfaces (Acpi*) to the ACPI debug memory 10139manager. This manager keeps a list of all outstanding 10140allocations, and can therefore detect memory leaks and attempts to 10141free memory blocks more than once. Useful for code such as the 10142power manager, etc. May not be appropriate for device drivers. 10143Performance with the debug code enabled is slow. 10144 10145The ACPI Global Lock is now an optional hardware element. 10146 10147 ASL Compiler Version X2015: 10148 10149Integrated changes to allow the compiler to be generated on 10150multiple platforms. 10151 10152Linux makefile added to generate the compiler on Linux 10153 10154 Source Code: 10155 10156All platform-specific headers have been moved to their own 10157subdirectory, Include/Platform. 10158 10159New source file added, Interpreter/ammutex.c 10160 10161New header file, Include/acstruct.h 10162 10163 Documentation: 10164 10165The programmer reference has been updated for the following new 10166interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 10167 10168 ------------------------------------------ 10169Summary of changes for this label: 02_08_01 10170 10171Core ACPI CA Subsystem: Fixed a problem where an error was 10172incorrectly returned if the return resource buffer was larger than 10173the actual data (in the resource interfaces). 10174 10175References to named objects within packages are resolved to the 10176 10177full pathname string before packages are returned directly (via 10178the AcpiEvaluateObject interface) or indirectly via the resource 10179interfaces. 10180 10181Linux OS Services Layer (OSL): 10182 10183Improved /proc battery interface. 10184 10185 10186Added C-state debugging output and other miscellaneous fixes. 10187 10188ASL Compiler Version X2014: 10189 10190All defined method arguments can now be used as local variables, 10191including the ones that are not actually passed in as parameters. 10192The compiler tracks initialization of the arguments and issues an 10193exception if they are used without prior assignment (just like 10194locals). 10195 10196The -o option now specifies a filename prefix that is used for all 10197output files, including the AML output file. Otherwise, the 10198default behavior is as follows: 1) the AML goes to the file 10199specified in the DSDT. 2) all other output files use the input 10200source filename as the base. 10201 10202 ------------------------------------------ 10203Summary of changes for this label: 01_25_01 10204 10205Core ACPI CA Subsystem: Restructured the implementation of object 10206store support within the interpreter. This includes support for 10207the Store operator as well as any ASL operators that include a 10208target operand. 10209 10210Partially implemented support for Implicit Result-to-Target 10211conversion. This is when a result object is converted on the fly 10212to the type of an existing target object. Completion of this 10213support is pending further analysis of the ACPI specification 10214concerning this matter. 10215 10216CPU-specific code has been removed from the subsystem (hardware 10217directory). 10218 10219New Power Management Timer functions added 10220 10221Linux OS Services Layer (OSL): Moved system state transition code 10222to the core, fixed it, and modified Linux OSL accordingly. 10223 10224Fixed C2 and C3 latency calculations. 10225 10226 10227We no longer use the compilation date for the version message on 10228initialization, but retrieve the version from AcpiGetSystemInfo(). 10229 10230Incorporated for fix Sony VAIO machines. 10231 10232Documentation: The Programmer Reference has been updated and 10233reformatted. 10234 10235 10236ASL Compiler: Version X2013: Fixed a problem where the line 10237numbering and error reporting could get out of sync in the 10238presence of multiple include files. 10239 10240 ------------------------------------------ 10241Summary of changes for this label: 01_15_01 10242 10243Core ACPI CA Subsystem: 10244 10245Implemented support for type conversions in the execution of the 10246ASL Concatenate operator (The second operand is converted to 10247match the type of the first operand before concatenation.) 10248 10249Support for implicit source operand conversion is partially 10250implemented. The ASL source operand types Integer, Buffer, and 10251String are freely interchangeable for most ASL operators and are 10252converted by the interpreter on the fly as required. Implicit 10253Target operand conversion (where the result is converted to the 10254target type before storing) is not yet implemented. 10255 10256Support for 32-bit and 64-bit BCD integers is implemented. 10257 10258Problem fixed where a field read on an aligned field could cause a 10259read past the end of the field. 10260 10261New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 10262does not return a value, but the caller expects one. (The ASL 10263compiler flags this as a warning.) 10264 10265ASL Compiler: 10266 10267Version X2011: 102681. Static typechecking of all operands is implemented. This 10269prevents the use of invalid objects (such as using a Package where 10270an Integer is required) at compile time instead of at interpreter 10271run-time. 102722. The ASL source line is printed with ALL errors and warnings. 102733. Bug fix for source EOF without final linefeed. 102744. Debug option is split into a parse trace and a namespace trace. 102755. Namespace output option (-n) includes initial values for 10276integers and strings. 102776. Parse-only option added for quick syntax checking. 102787. Compiler checks for duplicate ACPI name declarations 10279 10280Version X2012: 102811. Relaxed typechecking to allow interchangeability between 10282strings, integers, and buffers. These types are now converted by 10283the interpreter at runtime. 102842. Compiler reports time taken by each internal subsystem in the 10285debug output file. 10286 10287 10288 ------------------------------------------ 10289Summary of changes for this label: 12_14_00 10290 10291ASL Compiler: 10292 10293This is the first official release of the compiler. Since the 10294compiler requires elements of the Core Subsystem, this label 10295synchronizes everything. 10296 10297------------------------------------------ 10298Summary of changes for this label: 12_08_00 10299 10300 10301Fixed a problem where named references within the ASL definition 10302of both OperationRegions and CreateXXXFields did not work 10303properly. The symptom was an AE_AML_OPERAND_TYPE during 10304initialization of the region/field. This is similar (but not 10305related internally) to the problem that was fixed in the last 10306label. 10307 10308Implemented both 32-bit and 64-bit support for the BCD ASL 10309functions ToBCD and FromBCD. 10310 10311Updated all legal headers to include "2000" in the copyright 10312years. 10313 10314 ------------------------------------------ 10315Summary of changes for this label: 12_01_00 10316 10317Fixed a problem where method invocations within the ASL definition 10318of both OperationRegions and CreateXXXFields did not work 10319properly. The symptom was an AE_AML_OPERAND_TYPE during 10320initialization of the region/field: 10321 10322 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10323[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10324(0x3005) 10325 10326Fixed a problem where operators with more than one nested 10327subexpression would fail. The symptoms were varied, by mostly 10328AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10329problem that has gone unnoticed until now. 10330 10331 Subtract (Add (1,2), Multiply (3,4)) 10332 10333Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10334previous build (The prefix part of a relative path was handled 10335incorrectly). 10336 10337Fixed a problem where Operation Region initialization failed if 10338the operation region name was a "namepath" instead of a simple 10339"nameseg". Symptom was an AE_NO_OPERAND error. 10340 10341Fixed a problem where an assignment to a local variable via the 10342indirect RefOf mechanism only worked for the first such 10343assignment. Subsequent assignments were ignored. 10344 10345 ------------------------------------------ 10346Summary of changes for this label: 11_15_00 10347 10348ACPI 2.0 table support with backwards support for ACPI 1.0 and the 103490.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10350the AML interpreter does NOT have support for the new 2.0 ASL 10351grammar terms at this time. 10352 10353All ACPI hardware access is via the GAS structures in the ACPI 2.0 10354FADT. 10355 10356All physical memory addresses across all platforms are now 64 bits 10357wide. Logical address width remains dependent on the platform 10358(i.e., "void *"). 10359 10360AcpiOsMapMemory interface changed to a 64-bit physical address. 10361 10362The AML interpreter integer size is now 64 bits, as per the ACPI 103632.0 specification. 10364 10365For backwards compatibility with ACPI 1.0, ACPI tables with a 10366revision number less than 2 use 32-bit integers only. 10367 10368Fixed a problem where the evaluation of OpRegion operands did not 10369always resolve them to numbers properly. 10370 10371------------------------------------------ 10372Summary of changes for this label: 10_20_00 10373 10374Fix for CBN_._STA issue. This fix will allow correct access to 10375CBN_ OpRegions when the _STA returns 0x8. 10376 10377Support to convert ACPI constants (Ones, Zeros, One) to actual 10378values before a package object is returned 10379 10380Fix for method call as predicate to if/while construct causing 10381incorrect if/while behavior 10382 10383Fix for Else block package lengths sometimes calculated wrong (if 10384block > 63 bytes) 10385 10386Fix for Processor object length field, was always zero 10387 10388Table load abort if FACP sanity check fails 10389 10390Fix for problem with Scope(name) if name already exists 10391 10392Warning emitted if a named object referenced cannot be found 10393(resolved) during method execution. 10394 10395 10396 10397 10398 10399------------------------------------------ 10400Summary of changes for this label: 9_29_00 10401 10402New table initialization interfaces: AcpiInitializeSubsystem no 10403longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10404necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10405>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10406AcpiLoadTables 10407 10408Note: These interface changes require changes to all existing OSDs 10409 10410The PCI_Config default address space handler is always installed 10411at the root namespace object. 10412 10413------------------------------------------- 10414Summary of changes for this label: 09_15_00 10415 10416The new initialization architecture is implemented. New 10417interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10418AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10419 10420(Namespace is automatically loaded when a table is loaded) 10421 10422The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1042352 bytes to 32 bytes. There is usually one of these for every 10424namespace object, so the memory savings is significant. 10425 10426Implemented just-in-time evaluation of the CreateField operators. 10427 10428Bug fixes for IA-64 support have been integrated. 10429 10430Additional code review comments have been implemented 10431 10432The so-called "third pass parse" has been replaced by a final walk 10433through the namespace to initialize all operation regions (address 10434spaces) and fields that have not yet been initialized during the 10435execution of the various _INI and REG methods. 10436 10437New file - namespace/nsinit.c 10438 10439------------------------------------------- 10440Summary of changes for this label: 09_01_00 10441 10442Namespace manager data structures have been reworked to change the 10443primary object from a table to a single object. This has 10444resulted in dynamic memory savings of 3X within the namespace and 104452X overall in the ACPI CA subsystem. 10446 10447Fixed problem where the call to AcpiEvFindPciRootBuses was 10448inadvertently left commented out. 10449 10450Reduced the warning count when generating the source with the GCC 10451compiler. 10452 10453Revision numbers added to each module header showing the 10454SourceSafe version of the file. Please refer to this version 10455number when giving us feedback or comments on individual modules. 10456 10457The main object types within the subsystem have been renamed to 10458clarify their purpose: 10459 10460ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10461ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10462ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10463 10464NOTE: no changes to the initialization sequence are included in 10465this label. 10466 10467------------------------------------------- 10468Summary of changes for this label: 08_23_00 10469 10470Fixed problem where TerminateControlMethod was being called 10471multiple times per method 10472 10473Fixed debugger problem where single stepping caused a semaphore to 10474be oversignalled 10475 10476Improved performance through additional parse object caching - 10477added ACPI_EXTENDED_OP type 10478 10479------------------------------------------- 10480Summary of changes for this label: 08_10_00 10481 10482Parser/Interpreter integration: Eliminated the creation of 10483complete parse trees for ACPI tables and control methods. 10484Instead, parse subtrees are created and then deleted as soon as 10485they are processed (Either entered into the namespace or executed 10486by the interpreter). This reduces the use of dynamic kernel 10487memory significantly. (about 10X) 10488 10489Exception codes broken into classes and renumbered. Be sure to 10490recompile all code that includes acexcep.h. Hopefully we won't 10491have to renumber the codes again now that they are split into 10492classes (environment, programmer, AML code, ACPI table, and 10493internal). 10494 10495Fixed some additional alignment issues in the Resource Manager 10496subcomponent 10497 10498Implemented semaphore tracking in the AcpiExec utility, and fixed 10499several places where mutexes/semaphores were being unlocked 10500without a corresponding lock operation. There are no known 10501semaphore or mutex "leaks" at this time. 10502 10503Fixed the case where an ASL Return operator is used to return an 10504unnamed package. 10505 10506------------------------------------------- 10507Summary of changes for this label: 07_28_00 10508 10509Fixed a problem with the way addresses were calculated in 10510AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10511manifested itself when a Field was created with WordAccess or 10512DwordAccess, but the field unit defined within the Field was less 10513 10514than a Word or Dword. 10515 10516Fixed a problem in AmlDumpOperands() module's loop to pull 10517operands off of the operand stack to display information. The 10518problem manifested itself as a TLB error on 64-bit systems when 10519accessing an operand stack with two or more operands. 10520 10521Fixed a problem with the PCI configuration space handlers where 10522context was getting confused between accesses. This required a 10523change to the generic address space handler and address space 10524setup definitions. Handlers now get both a global handler context 10525(this is the one passed in by the user when executing 10526AcpiInstallAddressSpaceHandler() and a specific region context 10527that is unique to each region (For example, the _ADR, _SEG and 10528_BBN values associated with a specific region). The generic 10529function definitions have changed to the following: 10530 10531typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10532UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10533*HandlerContext, // This used to be void *Context void 10534*RegionContext); // This is an additional parameter 10535 10536typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10537RegionHandle, UINT32 Function, void *HandlerContext, void 10538**RegionContext); // This used to be **ReturnContext 10539 10540------------------------------------------- 10541Summary of changes for this label: 07_21_00 10542 10543Major file consolidation and rename. All files within the 10544interpreter have been renamed as well as most header files. This 10545was done to prevent collisions with existing files in the host 10546OSs -- filenames such as "config.h" and "global.h" seem to be 10547quite common. The VC project files have been updated. All 10548makefiles will require modification. 10549 10550The parser/interpreter integration continues in Phase 5 with the 10551implementation of a complete 2-pass parse (the AML is parsed 10552twice) for each table; This avoids the construction of a huge 10553parse tree and therefore reduces the amount of dynamic memory 10554required by the subsystem. Greater use of the parse object cache 10555means that performance is unaffected. 10556 10557Many comments from the two code reviews have been rolled in. 10558 10559The 64-bit alignment support is complete. 10560 10561------------------------------------------- 10562Summary of changes for this label: 06_30_00 10563 10564With a nod and a tip of the hat to the technology of yesteryear, 10565we've added support in the source code for 80 column output 10566devices. The code is now mostly constrained to 80 columns or 10567less to support environments and editors that 1) cannot display 10568or print more than 80 characters on a single line, and 2) cannot 10569disable line wrapping. 10570 10571A major restructuring of the namespace data structure has been 10572completed. The result is 1) cleaner and more 10573understandable/maintainable code, and 2) a significant reduction 10574in the dynamic memory requirement for each named ACPI object 10575(almost half). 10576 10577------------------------------------------- 10578Summary of changes for this label: 06_23_00 10579 10580Linux support has been added. In order to obtain approval to get 10581the ACPI CA subsystem into the Linux kernel, we've had to make 10582quite a few changes to the base subsystem that will affect all 10583users (all the changes are generic and OS- independent). The 10584effects of these global changes have been somewhat far reaching. 10585Files have been merged and/or renamed and interfaces have been 10586renamed. The major changes are described below. 10587 10588Osd* interfaces renamed to AcpiOs* to eliminate namespace 10589pollution/confusion within our target kernels. All OSD 10590interfaces must be modified to match the new naming convention. 10591 10592Files merged across the subsystem. A number of the smaller source 10593and header files have been merged to reduce the file count and 10594increase the density of the existing files. There are too many 10595to list here. In general, makefiles that call out individual 10596files will require rebuilding. 10597 10598Interpreter files renamed. All interpreter files now have the 10599prefix am* instead of ie* and is*. 10600 10601Header files renamed: The acapi.h file is now acpixf.h. The 10602acpiosd.h file is now acpiosxf.h. We are removing references to 10603the acronym "API" since it is somewhat windowsy. The new name is 10604"external interface" or xface or xf in the filenames.j 10605 10606 10607All manifest constants have been forced to upper case (some were 10608mixed case.) Also, the string "ACPI_" has been prepended to many 10609(not all) of the constants, typedefs, and structs. 10610 10611The globals "DebugLevel" and "DebugLayer" have been renamed 10612"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10613 10614All other globals within the subsystem are now prefixed with 10615"AcpiGbl_" Internal procedures within the subsystem are now 10616prefixed with "Acpi" (with only a few exceptions). The original 10617two-letter abbreviation for the subcomponent remains after "Acpi" 10618- for example, CmCallocate became AcpiCmCallocate. 10619 10620Added a source code translation/conversion utility. Used to 10621generate the Linux source code, it can be modified to generate 10622other types of source as well. Can also be used to cleanup 10623existing source by removing extraneous spaces and blank lines. 10624Found in tools/acpisrc/* 10625 10626OsdUnMapMemory was renamed to OsdUnmapMemory and then 10627AcpiOsUnmapMemory. (UnMap became Unmap). 10628 10629A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10630When set to one, this indicates that the caller wants to use the 10631 10632semaphore as a mutex, not a counting semaphore. ACPI CA uses 10633both types. However, implementers of this call may want to use 10634different OS primitives depending on the type of semaphore 10635requested. For example, some operating systems provide separate 10636 10637"mutex" and "semaphore" interfaces - where the mutex interface is 10638much faster because it doesn't have all the overhead of a full 10639semaphore implementation. 10640 10641Fixed a deadlock problem where a method that accesses the PCI 10642address space can block forever if it is the first access to the 10643space. 10644 10645------------------------------------------- 10646Summary of changes for this label: 06_02_00 10647 10648Support for environments that cannot handle unaligned data 10649accesses (e.g. firmware and OS environments devoid of alignment 10650handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10651been added (via configurable macros) in these three areas: - 10652Transfer of data from the raw AML byte stream is done via byte 10653moves instead of word/dword/qword moves. - External objects are 10654aligned within the user buffer, including package elements (sub- 10655objects). - Conversion of name strings to UINT32 Acpi Names is now 10656done byte-wise. 10657 10658The Store operator was modified to mimic Microsoft's 10659implementation when storing to a Buffer Field. 10660 10661Added a check of the BM_STS bit before entering C3. 10662 10663The methods subdirectory has been obsoleted and removed. A new 10664file, cmeval.c subsumes the functionality. 10665 10666A 16-bit (DOS) version of AcpiExec has been developed. The 10667makefile is under the acpiexec directory. 10668