changes.txt revision 217365
1---------------------------------------- 212 January 2011. Summary of changes for version 20110112: 3 41) ACPI CA Core Subsystem: 5 6Fixed a race condition between method execution and namespace walks that can 7possibly cause a fault. The problem was apparently introduced in version 820100528 as a result of a performance optimization that reduces the number of 9namespace walks upon method exit by using the delete_namespace_subtree 10function instead of the delete_namespace_by_owner function used previously. 11Bug is a missing namespace lock in the delete_namespace_subtree function. 12dana.myers@oracle.com 13 14Fixed several issues and a possible fault with the automatic "serialized" 15method support. History: This support changes a method to "serialized" on the 16fly if the method generates an AE_ALREADY_EXISTS error, indicating the 17possibility that it cannot handle reentrancy. This fix repairs a couple of 18issues seen in the field, especially on machines with many cores: 19 20 1) Delete method children only upon the exit of the last thread, 21 so as to not delete objects out from under other running threads 22 (and possibly causing a fault.) 23 2) Set the "serialized" bit for the method only upon the exit of the 24 Last thread, so as to not cause deadlock when running threads 25 attempt to exit. 26 3) Cleanup the use of the AML "MethodFlags" and internal method flags 27 so that there is no longer any confusion between the two. 28 29 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com. 30 31Debugger: Now lock the namespace for duration of a namespace dump. Prevents 32issues if the namespace is changing dynamically underneath the debugger. 33Especially affects temporary namespace nodes, since the debugger displays 34these also. 35 36Updated the ordering of include files. The ACPICA headers should appear 37before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set 38any necessary compiler-specific defines, etc. Affects the ACPI-related tools 39and utilities. 40 41Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright 42to all module headers and signons, including the Linux header. This affects 43virtually every file in the ACPICA core subsystem, iASL compiler, and all 44utilities. 45 46Added project files for MS Visual Studio 2008 (VC++ 9.0). The original 47project files for VC++ 6.0 are now obsolete. New project files can be found 48under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for 49details. 50 51Example Code and Data Size: These are the sizes for the OS-independent 52acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The 53debug version of the code includes the debug output trace mechanism and has a 54much larger code and data size. 55 56 Previous Release (VC 6.0): 57 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 58 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 59 Current Release (VC 9.0): 60 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total 61 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total 62 632) iASL Compiler/Disassembler and Tools: 64 65iASL: Added generic data types to the Data Table compiler. Add "generic" data 66types such as UINT32, String, Unicode, etc., to simplify the generation of 67platform-defined tables such as UEFI. Lin Ming. 68 69iASL: Added listing support for the Data Table Compiler. Adds listing support 70(-l) to display actual binary output for each line of input code. 71 72---------------------------------------- 7309 December 2010. Summary of changes for version 20101209: 74 751) ACPI CA Core Subsystem: 76 77Completed the major overhaul of the GPE support code that was begun in July 782010. Major features include: removal of _PRW execution in ACPICA (host 79executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 80changes to existing interfaces, simplification of GPE handler operation, and 81a handful of new interfaces: 82 83 AcpiUpdateAllGpes 84 AcpiFinishGpe 85 AcpiSetupGpeForWake 86 AcpiSetGpeWakeMask 87 One new file, evxfgpe.c to consolidate all external GPE interfaces. 88 89See the ACPICA Programmer Reference for full details and programming 90information. See the new section 4.4 "General Purpose Event (GPE) Support" 91for a full overview, and section 8.7 "ACPI General Purpose Event Management" 92for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 93Bob Moore, Rafael Wysocki. 94 95Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 96GPE Notify". This feature will automatically issue a Notify(2) on a device 97when a Wake GPE is received if there is no corresponding GPE method or 98handler. ACPICA BZ 870. 99 100Fixed a problem with the Scope() operator during table parse and load phase. 101During load phase (table load or method execution), the scope operator should 102not enter the target into the namespace. Instead, it should open a new scope 103at the target location. Linux BZ 19462, ACPICA BZ 882. 104 105Example Code and Data Size: These are the sizes for the OS-independent 106acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 107debug version of the code includes the debug output trace mechanism and has a 108much larger code and data size. 109 110 Previous Release: 111 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 112 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 113 Current Release: 114 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 115 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 116 1172) iASL Compiler/Disassembler and Tools: 118 119iASL: Relax the alphanumeric restriction on _CID strings. These strings are 120"bus-specific" per the ACPI specification, and therefore any characters are 121acceptable. The only checks that can be performed are for a null string and 122perhaps for a leading asterisk. ACPICA BZ 886. 123 124iASL: Fixed a problem where a syntax error that caused a premature EOF 125condition on the source file emitted a very confusing error message. The 126premature EOF is now detected correctly. ACPICA BZ 891. 127 128Disassembler: Decode the AccessSize within a Generic Address Structure (byte 129access, word access, etc.) Note, this field does not allow arbitrary bit 130access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 131 132New: AcpiNames utility - Example namespace dump utility. Shows an example of 133ACPICA configuration for a minimal namespace dump utility. Uses table and 134namespace managers, but no AML interpreter. Does not add any functionality 135over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 136partition and configure ACPICA. ACPICA BZ 883. 137 138AML Debugger: Increased the debugger buffer size for method return objects. 139Was 4K, increased to 16K. Also enhanced error messages for debugger method 140execution, including the buffer overflow case. 141 142---------------------------------------- 14313 October 2010. Summary of changes for version 20101013: 144 1451) ACPI CA Core Subsystem: 146 147Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 148clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 149HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 150 151Changed the type of the predefined namespace object _TZ from ThermalZone to 152Device. This was found to be confusing to the host software that processes 153the various thermal zones, since _TZ is not really a ThermalZone. However, a 154Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 155Zhang. 156 157Added Windows Vista SP2 to the list of supported _OSI strings. The actual 158string is "Windows 2006 SP2". 159 160Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 161code automatically repairs _HID-related strings, this type of code is no 162longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 163 164Example Code and Data Size: These are the sizes for the OS-independent 165acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 166debug version of the code includes the debug output trace mechanism and has a 167much larger code and data size. 168 169 Previous Release: 170 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 171 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 172 Current Release: 173 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 174 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 175 1762) iASL Compiler/Disassembler and Tools: 177 178iASL: Implemented additional compile-time validation for _HID strings. The 179non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 180the string must be exactly seven or eight characters. For both _HID and _CID 181strings, all characters must be alphanumeric. ACPICA BZ 874. 182 183iASL: Allow certain "null" resource descriptors. Some BIOS code creates 184descriptors that are mostly or all zeros, with the expectation that they will 185be filled in at runtime. iASL now allows this as long as there is a "resource 186tag" (name) associated with the descriptor, which gives the ASL a handle 187needed to modify the descriptor. ACPICA BZ 873. 188 189Added single-thread support to the generic Unix application OSL. Primarily 190for iASL support, this change removes the use of semaphores in the single- 191threaded ACPICA tools/applications - increasing performance. The 192_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 193option. ACPICA BZ 879. 194 195AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 196for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 197 198iASL: Moved all compiler messages to a new file, aslmessages.h. 199 200---------------------------------------- 20115 September 2010. Summary of changes for version 20100915: 202 2031) ACPI CA Core Subsystem: 204 205Removed the AcpiOsDerivePciId OSL interface. The various host implementations 206of this function were not OS-dependent and are now obsolete and can be 207removed from all host OSLs. This function has been replaced by 208AcpiHwDerivePciId, which is now part of the ACPICA core code. 209AcpiHwDerivePciId has been implemented without recursion. Adds one new 210module, hwpci.c. ACPICA BZ 857. 211 212Implemented a dynamic repair for _HID and _CID strings. The following 213problems are now repaired at runtime: 1) Remove a leading asterisk in the 214string, and 2) the entire string is uppercased. Both repairs are in 215accordance with the ACPI specification and will simplify host driver code. 216ACPICA BZ 871. 217 218The ACPI_THREAD_ID type is no longer configurable, internally it is now 219always UINT64. This simplifies the ACPICA code, especially any printf output. 220UINT64 is the only common data type for all thread_id types across all 221operating systems. It is now up to the host OSL to cast the native thread_id 222type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 223Lin Ming, Bob Moore. 224 225Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 226keyword is not standard across compilers, and this type allows inline to be 227configured on a per-compiler basis. Lin Ming. 228 229Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 230Added an extern for this boolean in acpixf.h. Some hosts utilize this value 231during suspend/restore operations. ACPICA BZ 869. 232 233All code that implements error/warning messages with the "ACPI:" prefix has 234been moved to a new module, utxferror.c. 235 236The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 237is used. ACPICA BZ 829. Lin Ming, Bob Moore. 238 239Example Code and Data Size: These are the sizes for the OS-independent 240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 241debug version of the code includes the debug output trace mechanism and has a 242much larger code and data size. 243 244 Previous Release: 245 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 246 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 247 Current Release: 248 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 249 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 250 2512) iASL Compiler/Disassembler and Tools: 252 253iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 254This keeps the output files free of random error messages that may originate 255from within the namespace/interpreter code. Used this opportunity to merge 256all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 257866. Lin Ming, Bob Moore. 258 259Tools: update some printfs for ansi warnings on size_t. Handle width change 260of size_t on 32-bit versus 64-bit generations. Lin Ming. 261 262---------------------------------------- 26306 August 2010. Summary of changes for version 20100806: 264 2651) ACPI CA Core Subsystem: 266 267Designed and implemented a new host interface to the _OSI support code. This 268will allow the host to dynamically add or remove multiple _OSI strings, as 269well as install an optional handler that is called for each _OSI invocation. 270Also added a new AML debugger command, 'osi' to display and modify the global 271_OSI string table, and test support in the AcpiExec utility. See the ACPICA 272reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 273New Functions: 274 AcpiInstallInterface - Add an _OSI string. 275 AcpiRemoveInterface - Delete an _OSI string. 276 AcpiInstallInterfaceHandler - Install optional _OSI handler. 277Obsolete Functions: 278 AcpiOsValidateInterface - no longer used. 279New Files: 280 source/components/utilities/utosi.c 281 282Re-introduced the support to enable multi-byte transfers for Embedded 283Controller (EC) operation regions. A reported problem was found to be a bug 284in the host OS, not in the multi-byte support. Previously, the maximum data 285size passed to the EC operation region handler was a single byte. There are 286often EC Fields larger than one byte that need to be transferred, and it is 287useful for the EC driver to lock these as a single transaction. This change 288enables single transfers larger than 8 bits. This effectively changes the 289access to the EC space from ByteAcc to AnyAcc, and will probably require 290changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 291transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 292 293Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 294prototype in acpiosxf.h had the output value pointer as a (void *). 295It should be a (UINT64 *). This may affect some host OSL code. 296 297Fixed a couple problems with the recently modified Linux makefiles for iASL 298and AcpiExec. These new makefiles place the generated object files in the 299local directory so that there can be no collisions between the files that are 300shared between them that are compiled with different options. 301 302Example Code and Data Size: These are the sizes for the OS-independent 303acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 304debug version of the code includes the debug output trace mechanism and has a 305much larger code and data size. 306 307 Previous Release: 308 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 309 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 310 Current Release: 311 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 312 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 313 3142) iASL Compiler/Disassembler and Tools: 315 316iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 317namespace from and disassemble an entire group of AML files. Useful for 318loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 319disassembling with one simple command. ACPICA BZ 865. Lin Ming. 320 321iASL: Allow multiple invocations of -e option. This change allows multiple 322uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 323Lin Ming. 324 325---------------------------------------- 32602 July 2010. Summary of changes for version 20100702: 327 3281) ACPI CA Core Subsystem: 329 330Implemented several updates to the recently added GPE reference count 331support. The model for "wake" GPEs is changing to give the host OS complete 332control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 333methods, since the host already must execute them. Also, additional changes 334were made to help ensure that the reference counts are kept in proper 335synchronization with reality. Rafael J. Wysocki. 336 3371) Ensure that GPEs are not enabled twice during initialization. 3382) Ensure that GPE enable masks stay in sync with the reference count. 3393) Do not inadvertently enable GPEs when writing GPE registers. 3404) Remove the internal wake reference counter and add new AcpiGpeWakeup 341interface. This interface will set or clear individual GPEs for wakeup. 3425) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 343are now used for "runtime" GPEs only. 344 345Changed the behavior of the GPE install/remove handler interfaces. The GPE is 346no longer disabled during this process, as it was found to cause problems on 347some machines. Rafael J. Wysocki. 348 349Reverted a change introduced in version 20100528 to enable Embedded 350Controller multi-byte transfers. This change was found to cause problems with 351Index Fields and possibly Bank Fields. It will be reintroduced when these 352problems have been resolved. 353 354Fixed a problem with references to Alias objects within Package Objects. A 355reference to an Alias within the definition of a Package was not always 356resolved properly. Aliases to objects like Processors, Thermal zones, etc. 357were resolved to the actual object instead of a reference to the object as it 358should be. Package objects are only allowed to contain integer, string, 359buffer, package, and reference objects. Redhat bugzilla 608648. 360 361Example Code and Data Size: These are the sizes for the OS-independent 362acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 363debug version of the code includes the debug output trace mechanism and has a 364much larger code and data size. 365 366 Previous Release: 367 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 368 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 369 Current Release: 370 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 371 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 372 3732) iASL Compiler/Disassembler and Tools: 374 375iASL: Implemented a new compiler subsystem to allow definition and 376compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 377are called "ACPI Data Tables", and the new compiler is the "Data Table 378Compiler". This compiler is intended to simplify the existing error-prone 379process of creating these tables for the BIOS, as well as allowing the 380disassembly, modification, recompilation, and override of existing ACPI data 381tables. See the iASL User Guide for detailed information. 382 383iASL: Implemented a new Template Generator option in support of the new Data 384Table Compiler. This option will create examples of all known ACPI tables 385that can be used as the basis for table development. See the iASL 386documentation and the -T option. 387 388Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 389Descriptor Table). 390 391Updated the Linux makefiles for iASL and AcpiExec to place the generated 392object files in the local directory so that there can be no collisions 393between the shared files between them that are generated with different 394options. 395 396Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 397the #define __APPLE__ to enable this support. 398 399---------------------------------------- 40028 May 2010. Summary of changes for version 20100528: 401 402Note: The ACPI 4.0a specification was released on April 5, 2010 and is 403available at www.acpi.info. This is primarily an errata release. 404 4051) ACPI CA Core Subsystem: 406 407Undefined ACPI tables: We are looking for the definitions for the following 408ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 409 410Implemented support to enable multi-byte transfers for Embedded Controller 411(EC) operation regions. Previously, the maximum data size passed to the EC 412operation region handler was a single byte. There are often EC Fields larger 413than one byte that need to be transferred, and it is useful for the EC driver 414to lock these as a single transaction. This change enables single transfers 415larger than 8 bits. This effectively changes the access to the EC space from 416ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 417Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 418transfers. Alexey Starikovskiy, Lin Ming 419 420Implemented a performance enhancement for namespace search and access. This 421change enhances the performance of namespace searches and walks by adding a 422backpointer to the parent in each namespace node. On large namespaces, this 423change can improve overall ACPI performance by up to 9X. Adding a pointer to 424each namespace node increases the overall size of the internal namespace by 425about 5%, since each namespace entry usually consists of both a namespace 426node and an ACPI operand object. However, this is the first growth of the 427namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 428 429Implemented a performance optimization that reduces the number of namespace 430walks. On control method exit, only walk the namespace if the method is known 431to have created namespace objects outside of its local scope. Previously, the 432entire namespace was traversed on each control method exit. This change can 433improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 434 435Added support to truncate I/O addresses to 16 bits for Windows compatibility. 436Some ASL code has been seen in the field that inadvertently has bits set 437above bit 15. This feature is optional and is enabled if the BIOS requests 438any Windows OSI strings. It can also be enabled by the host OS. Matthew 439Garrett, Bob Moore. 440 441Added support to limit the maximum time for the ASL Sleep() operator. To 442prevent accidental deep sleeps, limit the maximum time that Sleep() will 443actually sleep. Configurable, the default maximum is two seconds. ACPICA 444bugzilla 854. 445 446Added run-time validation support for the _WDG and_WED Microsoft predefined 447methods. These objects are defined by "Windows Instrumentation", and are not 448part of the ACPI spec. ACPICA BZ 860. 449 450Expanded all statistic counters used during namespace and device 451initialization from 16 to 32 bits in order to support very large namespaces. 452 453Replaced all instances of %d in printf format specifiers with %u since nearly 454all integers in ACPICA are unsigned. 455 456Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 457as AE_NO_HANDLER. 458 459Example Code and Data Size: These are the sizes for the OS-independent 460acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 461debug version of the code includes the debug output trace mechanism and has a 462much larger code and data size. 463 464 Previous Release: 465 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 466 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 467 Current Release: 468 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 469 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 470 4712) iASL Compiler/Disassembler and Tools: 472 473iASL: Added compiler support for the _WDG and_WED Microsoft predefined 474methods. These objects are defined by "Windows Instrumentation", and are not 475part of the ACPI spec. ACPICA BZ 860. 476 477AcpiExec: added option to disable the memory tracking mechanism. The -dt 478option will disable the tracking mechanism, which improves performance 479considerably. 480 481AcpiExec: Restructured the command line options into -d (disable) and -e 482(enable) options. 483 484---------------------------------------- 48528 April 2010. Summary of changes for version 20100428: 486 4871) ACPI CA Core Subsystem: 488 489Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 490including FADT-based and GPE Block Devices, execute any _PRW methods in the 491new table, and process any _Lxx/_Exx GPE methods in the new table. Any 492runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 493immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 494Devices. Provides compatibility with other ACPI implementations. Two new 495files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 496 497Fixed a regression introduced in version 20100331 within the table manager 498where initial table loading could fail. This was introduced in the fix for 499AcpiReallocateRootTable. Also, renamed some of fields in the table manager 500data structures to clarify their meaning and use. 501 502Fixed a possible allocation overrun during internal object copy in 503AcpiUtCopySimpleObject. The original code did not correctly handle the case 504where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 505 506Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 507possible access beyond end-of-allocation. Also, now fully validate descriptor 508(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 509 510Example Code and Data Size: These are the sizes for the OS-independent 511acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 512debug version of the code includes the debug output trace mechanism and has a 513much larger code and data size. 514 515 Previous Release: 516 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 517 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 518 Current Release: 519 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 520 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 521 5222) iASL Compiler/Disassembler and Tools: 523 524iASL: Implemented Min/Max/Len/Gran validation for address resource 525descriptors. This change implements validation for the address fields that 526are common to all address-type resource descriptors. These checks are 527implemented: Checks for valid Min/Max, length within the Min/Max window, 528valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 529table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 530and aslrestype2.c files into five new files. ACPICA BZ 840. 531 532iASL: Added support for the _Wxx predefined names. This support was missing 533and these names were not recognized by the compiler as valid predefined 534names. ACPICA BZ 851. 535 536iASL: Added an error for all predefined names that are defined to return no 537value and thus must be implemented as Control Methods. These include all of 538the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 539names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 540 541iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 542ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 543dynamically loaded via the Load() operator. Also cleaned up output for the - 544ta and -tc options. ACPICA BZ 853. 545 546Tests: Added a new file with examples of extended iASL error checking. 547Demonstrates the advanced error checking ability of the iASL compiler. 548Available at tests/misc/badcode.asl. 549 550---------------------------------------- 55131 March 2010. Summary of changes for version 20100331: 552 5531) ACPI CA Core Subsystem: 554 555Completed a major update for the GPE support in order to improve support for 556shared GPEs and to simplify both host OS and ACPICA code. Added a reference 557count mechanism to support shared GPEs that require multiple device drivers. 558Several external interfaces have changed. One external interface has been 559removed. One new external interface was added. Most of the GPE external 560interfaces now use the GPE spinlock instead of the events mutex (and the 561Flags parameter for many GPE interfaces has been removed.) See the updated 562ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 563Wysocki. ACPICA BZ 831. 564 565Changed: 566 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 567Removed: 568 AcpiSetGpeType 569New: 570 AcpiSetGpe 571 572Implemented write support for DataTable operation regions. These regions are 573defined via the DataTableRegion() operator. Previously, only read support was 574implemented. The ACPI specification allows DataTableRegions to be read/write, 575however. 576 577Implemented a new subsystem option to force a copy of the DSDT to local 578memory. Optionally copy the entire DSDT to local memory (instead of simply 579mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 580the original DSDT, creating the need for this option. Default is FALSE, do 581not copy the DSDT. 582 583Implemented detection of a corrupted or replaced DSDT. This change adds 584support to detect a DSDT that has been corrupted and/or replaced from outside 585the OS (by firmware). This is typically catastrophic for the system, but has 586been seen on some machines. Once this problem has been detected, the DSDT 587copy option can be enabled via system configuration. Lin Ming, Bob Moore. 588 589Fixed two problems with AcpiReallocateRootTable during the root table copy. 590When copying the root table to the new allocation, the length used was 591incorrect. The new size was used instead of the current table size, meaning 592too much data was copied. Also, the count of available slots for ACPI tables 593was not set correctly. Alexey Starikovskiy, Bob Moore. 594 595Example Code and Data Size: These are the sizes for the OS-independent 596acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 597debug version of the code includes the debug output trace mechanism and has a 598much larger code and data size. 599 600 Previous Release: 601 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 602 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 603 Current Release: 604 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 605 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 606 6072) iASL Compiler/Disassembler and Tools: 608 609iASL: Implement limited typechecking for values returned from predefined 610control methods. The type of any returned static (unnamed) object is now 611validated. For example, Return(1). ACPICA BZ 786. 612 613iASL: Fixed a predefined name object verification regression. Fixes a problem 614introduced in version 20100304. An error is incorrectly generated if a 615predefined name is declared as a static named object with a value defined 616using the keywords "Zero", "One", or "Ones". Lin Ming. 617 618iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 619reducing the requested registry access rights. ACPICA BZ 842. 620 621Disassembler: fixed a possible fault when generating External() statements. 622Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 623(carat). Fixes a string length allocation calculation. Lin Ming. 624 625---------------------------------------- 62604 March 2010. Summary of changes for version 20100304: 627 6281) ACPI CA Core Subsystem: 629 630Fixed a possible problem with the AML Mutex handling function 631AcpiExReleaseMutex where the function could fault under the very rare 632condition when the interpreter has blocked, the interpreter lock is released, 633the interpreter is then reentered via the same thread, and attempts to 634acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 635Ming. 636 637Implemented additional configuration support for the AML "Debug Object". 638Output from the debug object can now be enabled via a global variable, 639AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 640This debug output is now available in the release version of ACPICA instead 641of just the debug version. Also, the entire debug output module can now be 642configured out of the ACPICA build if desired. One new file added, 643executer/exdebug.c. Lin Ming, Bob Moore. 644 645Added header support for the ACPI MCHI table (Management Controller Host 646Interface Table). This table was added in ACPI 4.0, but the defining document 647has only recently become available. 648 649Standardized output of integer values for ACPICA warnings/errors. Always use 6500x prefix for hex output, always use %u for unsigned integer decimal output. 651Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 652invocations.) These invocations were converted from the original 653ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 654 655Example Code and Data Size: These are the sizes for the OS-independent 656acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 657debug version of the code includes the debug output trace mechanism and has a 658much larger code and data size. 659 660 Previous Release: 661 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 662 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 663 Current Release: 664 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 665 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 666 6672) iASL Compiler/Disassembler and Tools: 668 669iASL: Implemented typechecking support for static (non-control method) 670predefined named objects that are declared with the Name() operator. For 671example, the type of this object is now validated to be of type Integer: 672Name(_BBN, 1). This change migrates the compiler to using the core predefined 673name table instead of maintaining a local version. Added a new file, 674aslpredef.c. ACPICA BZ 832. 675 676Disassembler: Added support for the ACPI 4.0 MCHI table. 677 678---------------------------------------- 67921 January 2010. Summary of changes for version 20100121: 680 6811) ACPI CA Core Subsystem: 682 683Added the 2010 copyright to all module headers and signons. This affects 684virtually every file in the ACPICA core subsystem, the iASL compiler, the 685tools/utilities, and the test suites. 686 687Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 688invocations of the _STA method. In the case where a specific _HID is 689requested, do not run _STA until a _HID match is found. This eliminates 690potentially dozens of _STA calls during a search for a particular device/HID, 691which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 692 693Implemented an additional repair for predefined method return values. Attempt 694to repair unexpected NULL elements within returned Package objects. Create an 695Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 696ACPICA BZ 818. Lin Ming, Bob Moore. 697 698Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 699code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 70064-bit AML integers). It is now obsolete and this change removes it from the 701ACPICA code base, replaced by UINT64. The original typedef has been retained 702for now for compatibility with existing device driver code. ACPICA BZ 824. 703 704Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 705the parse tree object. 706 707Added additional warning options for the gcc-4 generation. Updated the source 708accordingly. This includes some code restructuring to eliminate unreachable 709code, elimination of some gotos, elimination of unused return values, some 710additional casting, and removal of redundant declarations. 711 712Example Code and Data Size: These are the sizes for the OS-independent 713acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 714debug version of the code includes the debug output trace mechanism and has a 715much larger code and data size. 716 717 Previous Release: 718 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 719 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 720 Current Release: 721 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 722 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 723 7242) iASL Compiler/Disassembler and Tools: 725 726No functional changes for this release. 727 728---------------------------------------- 72914 December 2009. Summary of changes for version 20091214: 730 7311) ACPI CA Core Subsystem: 732 733Enhanced automatic data type conversions for predefined name repairs. This 734change expands the automatic repairs/conversions for predefined name return 735values to make Integers, Strings, and Buffers fully interchangeable. Also, a 736Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 737module was completely restructured. Lin Ming, Bob Moore. 738 739Implemented automatic removal of null package elements during predefined name 740repairs. This change will automatically remove embedded and trailing NULL 741package elements from returned package objects that are defined to contain a 742variable number of sub-packages. The driver is then presented with a package 743with no null elements to deal with. ACPICA BZ 819. 744 745Implemented a repair for the predefined _FDE and _GTM names. The expected 746return value for both names is a Buffer of 5 DWORDs. This repair fixes two 747possible problems (both seen in the field), where a package of integers is 748returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 749 750Implemented additional module-level code support. This change will properly 751execute module-level code that is not at the root of the namespace (under a 752Device object, etc.). Now executes the code within the current scope instead 753of the root. ACPICA BZ 762. Lin Ming. 754 755Fixed possible mutex acquisition errors when running _REG methods. Fixes a 756problem where mutex errors can occur when running a _REG method that is in 757the same scope as a method-defined operation region or an operation region 758under a module-level IF block. This type of code is rare, so the problem has 759not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 760 761Fixed a possible memory leak during module-level code execution. An object 762could be leaked for each block of executed module-level code if the 763interpreter slack mode is enabled This change deletes any implicitly returned 764object from the module-level code block. Lin Ming. 765 766Removed messages for successful predefined repair(s). The repair mechanism 767was considered too wordy. Now, messages are only unconditionally emitted if 768the return object cannot be repaired. Existing messages for successful 769repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 770 771Example Code and Data Size: These are the sizes for the OS-independent 772acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 773debug version of the code includes the debug output trace mechanism and has a 774much larger code and data size. 775 776 Previous Release: 777 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 778 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 779 Current Release: 780 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 781 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 782 7832) iASL Compiler/Disassembler and Tools: 784 785iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 786were no longer automatically removed at the termination of the compile. 787 788acpiexec: Implemented the -f option to specify default region fill value. 789This option specifies the value used to initialize buffers that simulate 790operation regions. Default value is zero. Useful for debugging problems that 791depend on a specific initial value for a region or field. 792 793---------------------------------------- 79412 November 2009. Summary of changes for version 20091112: 795 7961) ACPI CA Core Subsystem: 797 798Implemented a post-order callback to AcpiWalkNamespace. The existing 799interface only has a pre-order callback. This change adds an additional 800parameter for a post-order callback which will be more useful for bus scans. 801ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 802 803Modified the behavior of the operation region memory mapping cache for 804SystemMemory. Ensure that the memory mappings created for operation regions 805do not cross 4K page boundaries. Crossing a page boundary while mapping 806regions can cause kernel warnings on some hosts if the pages have different 807attributes. Such regions are probably BIOS bugs, and this is the workaround. 808Linux BZ 14445. Lin Ming. 809 810Implemented an automatic repair for predefined methods that must return 811sorted lists. This change will repair (by sorting) packages returned by _ALR, 812_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 813and do not contain NULL package elements. Adds one new file, 814namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 815 816Fixed a possible fault during predefined name validation if a return Package 817object contains NULL elements. Also adds a warning if a NULL element is 818followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 819include repair or removal of all such NULL elements where possible. 820 821Implemented additional module-level executable AML code support. This change 822will execute module-level code that is not at the root of the namespace 823(under a Device object, etc.) at table load time. Module-level executable AML 824code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 825 826Implemented a new internal function to create Integer objects. This function 827simplifies miscellaneous object creation code. ACPICA BZ 823. 828 829Reduced the severity of predefined repair messages, Warning to Info. Since 830the object was successfully repaired, a warning is too severe. Reduced to an 831info message for now. These messages may eventually be changed to debug-only. 832ACPICA BZ 812. 833 834Example Code and Data Size: These are the sizes for the OS-independent 835acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 836debug version of the code includes the debug output trace mechanism and has a 837much larger code and data size. 838 839 Previous Release: 840 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 841 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 842 Current Release: 843 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 844 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 845 8462) iASL Compiler/Disassembler and Tools: 847 848iASL: Implemented Switch() with While(1) so that Break works correctly. This 849change correctly implements the Switch operator with a surrounding While(1) 850so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 851 852iASL: Added a message if a package initializer list is shorter than package 853length. Adds a new remark for a Package() declaration if an initializer list 854exists, but is shorter than the declared length of the package. Although 855technically legal, this is probably a coding error and it is seen in the 856field. ACPICA BZ 815. Lin Ming, Bob Moore. 857 858iASL: Fixed a problem where the compiler could fault after the maximum number 859of errors was reached (200). 860 861acpixtract: Fixed a possible warning for pointer cast if the compiler warning 862level set very high. 863 864---------------------------------------- 86513 October 2009. Summary of changes for version 20091013: 866 8671) ACPI CA Core Subsystem: 868 869Fixed a problem where an Operation Region _REG method could be executed more 870than once. If a custom address space handler is installed by the host before 871the "initialize operation regions" phase of the ACPICA initialization, any 872_REG methods for that address space could be executed twice. This change 873fixes the problem. ACPICA BZ 427. Lin Ming. 874 875Fixed a possible memory leak for the Scope() ASL operator. When the exact 876invocation of "Scope(\)" is executed (change scope to root), one internal 877operand object was leaked. Lin Ming. 878 879Implemented a run-time repair for the _MAT predefined method. If the _MAT 880return value is defined as a Field object in the AML, and the field 881size is less than or equal to the default width of an integer (32 or 64),_MAT 882can incorrectly return an Integer instead of a Buffer. ACPICA now 883automatically repairs this problem. ACPICA BZ 810. 884 885Implemented a run-time repair for the _BIF and _BIX predefined methods. The 886"OEM Information" field is often incorrectly returned as an Integer with 887value zero if the field is not supported by the platform. This is due to an 888ambiguity in the ACPI specification. The field should always be a string. 889ACPICA now automatically repairs this problem by returning a NULL string 890within the returned Package. ACPICA BZ 807. 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 a 895much larger code and data size. 896 897 Previous Release: 898 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 899 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 900 Current Release: 901 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 902 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 903 9042) iASL Compiler/Disassembler and Tools: 905 906Disassembler: Fixed a problem where references to external symbols that 907contained one or more parent-prefixes (carats) were not handled correctly, 908possibly causing a fault. ACPICA BZ 806. Lin Ming. 909 910Disassembler: Restructured the code so that all functions that handle 911external symbols are in a single module. One new file is added, 912common/dmextern.c. 913 914AML Debugger: Added a max count argument for the Batch command (which 915executes multiple predefined methods within the namespace.) 916 917iASL: Updated the compiler documentation (User Reference.) Available at 918http://www.acpica.org/documentation/. ACPICA BZ 750. 919 920AcpiXtract: Updated for Lint and other formatting changes. Close all open 921files. 922 923---------------------------------------- 92403 September 2009. Summary of changes for version 20090903: 925 9261) ACPI CA Core Subsystem: 927 928For Windows Vista compatibility, added the automatic execution of an _INI 929method located at the namespace root (\_INI). This method is executed at 930table load time. This support is in addition to the automatic execution of 931\_SB._INI. Lin Ming. 932 933Fixed a possible memory leak in the interpreter for AML package objects if 934the package initializer list is longer than the defined size of the package. 935This apparently can only happen if the BIOS changes the package size on the 936fly (seen in a _PSS object), as ASL compilers do not allow this. The 937interpreter will truncate the package to the defined size (and issue an error 938message), but previously could leave the extra objects undeleted if they were 939pre-created during the argument processing (such is the case if the package 940consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 941 942Fixed a problem seen when a Buffer or String is stored to itself via ASL. 943This has been reported in the field. Previously, ACPICA would zero out the 944buffer/string. Now, the operation is treated as a noop. Provides Windows 945compatibility. ACPICA BZ 803. Lin Ming. 946 947Removed an extraneous error message for ASL constructs of the form 948Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 949are seen in many BIOSs and are once again treated as NOOPs and no error is 950emitted when they are encountered. ACPICA BZ 785. 951 952Fixed an extraneous warning message if a _DSM reserved method returns a 953Package object. _DSM can return any type of object, so validation on the 954return type cannot be performed. ACPICA BZ 802. 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 a 959much larger code and data size. 960 961 Previous Release: 962 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 963 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 964 Current Release: 965 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 966 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 967 9682) iASL Compiler/Disassembler and Tools: 969 970iASL: Fixed a problem with the use of the Alias operator and Resource 971Templates. The correct alias is now constructed and no error is emitted. 972ACPICA BZ 738. 973 974iASL: Implemented the -I option to specify additional search directories for 975include files. Allows multiple additional search paths for include files. 976Directories are searched in the order specified on the command line (after 977the local directory is searched.) ACPICA BZ 800. 978 979iASL: Fixed a problem where the full pathname for include files was not 980emitted for warnings/errors. This caused the IDE support to not work 981properly. ACPICA BZ 765. 982 983iASL: Implemented the -@ option to specify a Windows-style response file 984containing additional command line options. ACPICA BZ 801. 985 986AcpiExec: Added support to load multiple AML files simultaneously (such as a 987DSDT and multiple SSDTs). Also added support for wildcards within the AML 988pathname. These features allow all machine tables to be easily loaded and 989debugged together. ACPICA BZ 804. 990 991Disassembler: Added missing support for disassembly of HEST table Error Bank 992subtables. 993 994---------------------------------------- 99530 July 2009. Summary of changes for version 20090730: 996 997The ACPI 4.0 implementation for ACPICA is complete with this release. 998 9991) ACPI CA Core Subsystem: 1000 1001ACPI 4.0: Added header file support for all new and changed ACPI tables. 1002Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 1003for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 1004EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 1005have been some ACPI 4.0 changes to other existing tables. Split the large 1006actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 1007 1008ACPI 4.0: Implemented predefined name validation for all new names. There are 100931 new names in ACPI 4.0. The predefined validation module was split into two 1010files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 1011 1012Implemented support for so-called "module-level executable code". This is 1013executable AML code that exists outside of any control method and is intended 1014to be executed at table load time. Although illegal since ACPI 2.0, this type 1015of code still exists and is apparently still being created. Blocks of this 1016code are now detected and executed as intended. Currently, the code blocks 1017must exist under either an If, Else, or While construct; these are the 1018typical cases seen in the field. ACPICA BZ 762. Lin Ming. 1019 1020Implemented an automatic dynamic repair for predefined names that return 1021nested Package objects. This applies to predefined names that are defined to 1022return a variable-length Package of sub-packages. If the number of sub- 1023packages is one, BIOS code is occasionally seen that creates a simple single 1024package with no sub-packages. This code attempts to fix the problem by 1025wrapping a new package object around the existing package. These methods can 1026be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 1027790. 1028 1029Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 1030The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 1031BZ 793. 1032 1033Fixed a problem with AcpiReset where the reset would silently fail if the 1034register was one of the protected I/O ports. AcpiReset now bypasses the port 1035validation mechanism. This may eventually be driven into the AcpiRead/Write 1036interfaces. 1037 1038Fixed a regression related to the recent update of the AcpiRead/Write 1039interfaces. A sleep/suspend could fail if the optional PM2 Control register 1040does not exist during an attempt to write the Bus Master Arbitration bit. 1041(However, some hosts already delete the code that writes this bit, and the 1042code may in fact be obsolete at this date.) ACPICA BZ 799. 1043 1044Fixed a problem where AcpiTerminate could fault if inadvertently called twice 1045in succession. ACPICA BZ 795. 1046 1047Example Code and Data Size: These are the sizes for the OS-independent 1048acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1049debug version of the code includes the debug output trace mechanism and has a 1050much larger code and data size. 1051 1052 Previous Release: 1053 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1054 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1055 Current Release: 1056 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 1057 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 1058 10592) iASL Compiler/Disassembler and Tools: 1060 1061ACPI 4.0: Implemented disassembler support for all new ACPI tables and 1062changes to existing tables. ACPICA BZ 775. 1063 1064---------------------------------------- 106525 June 2009. Summary of changes for version 20090625: 1066 1067The ACPI 4.0 Specification was released on June 16 and is available at 1068www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1069continue for the next few releases. 1070 10711) ACPI CA Core Subsystem: 1072 1073ACPI 4.0: Implemented interpreter support for the IPMI operation region 1074address space. Includes support for bi-directional data buffers and an IPMI 1075address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1076773. Lin Ming. 1077 1078ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1079support in both the header files and the disassembler. 1080 1081Completed a major update for the AcpiGetObjectInfo external interface. 1082Changes include: 1083 - Support for variable, unlimited length HID, UID, and CID strings. 1084 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1085 - Call the _SxW power methods on behalf of a device object. 1086 - Determine if a device is a PCI root bridge. 1087 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1088These changes will require an update to all callers of this interface. See 1089the updated ACPICA Programmer Reference for details. One new source file has 1090been added - utilities/utids.c. ACPICA BZ 368, 780. 1091 1092Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1093transfers. The Value parameter has been extended from 32 bits to 64 bits in 1094order to support new ACPI 4.0 tables. These changes will require an update to 1095all callers of these interfaces. See the ACPICA Programmer Reference for 1096details. ACPICA BZ 768. 1097 1098Fixed several problems with AcpiAttachData. The handler was not invoked when 1099the host node was deleted. The data sub-object was not automatically deleted 1100when the host node was deleted. The interface to the handler had an unused 1101parameter, this was removed. ACPICA BZ 778. 1102 1103Enhanced the function that dumps ACPI table headers. All non-printable 1104characters in the string fields are now replaced with '?' (Signature, OemId, 1105OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1106these fields are occasionally seen in the field. ACPICA BZ 788. 1107 1108Fixed a problem with predefined method repair code where the code that 1109attempts to repair/convert an object of incorrect type is only executed on 1110the first time the predefined method is called. The mechanism that disables 1111warnings on subsequent calls was interfering with the repair mechanism. 1112ACPICA BZ 781. 1113 1114Fixed a possible memory leak in the predefined validation/repair code when a 1115buffer is automatically converted to an expected string object. 1116 1117Removed obsolete 16-bit files from the distribution and from the current git 1118tree head. ACPICA BZ 776. 1119 1120Example Code and Data Size: These are the sizes for the OS-independent 1121acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1122debug version of the code includes the debug output trace mechanism and has a 1123much larger code and data size. 1124 1125 Previous Release: 1126 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1127 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1128 Current Release: 1129 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1130 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1131 11322) iASL Compiler/Disassembler and Tools: 1133 1134ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1135operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1136 1137ACPI 4.0: iASL - implemented compile-time validation support for all new 1138predefined names and control methods (31 total). ACPICA BZ 769. 1139 1140---------------------------------------- 114121 May 2009. Summary of changes for version 20090521: 1142 11431) ACPI CA Core Subsystem: 1144 1145Disabled the preservation of the SCI enable bit in the PM1 control register. 1146The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1147a "preserved" bit - "OSPM always preserves this bit position", section 11484.7.3.2.1. However, some machines fail if this bit is in fact preserved 1149because the bit needs to be explicitly set by the OS as a workaround. No 1150machines fail if the bit is not preserved. Therefore, ACPICA no longer 1151attempts to preserve this bit. 1152 1153Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1154incorrectly formed _PRT package could cause a fault. Added validation to 1155ensure that each package element is actually a sub-package. 1156 1157Implemented a new interface to install or override a single control method, 1158AcpiInstallMethod. This interface is useful when debugging in order to repair 1159an existing method or to install a missing method without having to override 1160the entire ACPI table. See the ACPICA Programmer Reference for use and 1161examples. Lin Ming, Bob Moore. 1162 1163Fixed several reference count issues with the DdbHandle object that is 1164created from a Load or LoadTable operator. Prevent premature deletion of the 1165object. Also, mark the object as invalid once the table has been unloaded. 1166This is needed because the handle itself may not be deleted after the table 1167unload, depending on whether it has been stored in a named object by the 1168caller. Lin Ming. 1169 1170Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1171mutexes of the same sync level are acquired but then not released in strict 1172opposite order, the internally maintained Current Sync Level becomes confused 1173and can cause subsequent execution errors. ACPICA BZ 471. 1174 1175Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1176specification has been changed to make the SyncLevel for mutex objects more 1177useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1178same as the current sync level. This makes more sense than the previous rule 1179(SyncLevel less than or equal). This change updates the code to match the 1180specification. 1181 1182Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1183(local) cache must be locked during all cache object deletions. Andrew 1184Baumann. 1185 1186Updated the Load operator to use operation region interfaces. This replaces 1187direct memory mapping with region access calls. Now, all region accesses go 1188through the installed region handler as they should. 1189 1190Simplified and optimized the NsGetNextNode function. Reduced parameter count 1191and reduced code for this frequently used function. 1192 1193Example Code and Data Size: These are the sizes for the OS-independent 1194acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1195debug version of the code includes the debug output trace mechanism and has a 1196much larger code and data size. 1197 1198 Previous Release: 1199 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1200 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1201 Current Release: 1202 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1203 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1204 12052) iASL Compiler/Disassembler and Tools: 1206 1207Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1208with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1209after an invalid sub-table ID. 1210 1211---------------------------------------- 121222 April 2009. Summary of changes for version 20090422: 1213 12141) ACPI CA Core Subsystem: 1215 1216Fixed a compatibility issue with the recently released I/O port protection 1217mechanism. For windows compatibility, 1) On a port protection violation, 1218simply ignore the request and do not return an exception (allow the control 1219method to continue execution.) 2) If only part of the request overlaps a 1220protected port, read/write the individual ports that are not protected. Linux 1221BZ 13036. Lin Ming 1222 1223Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1224breaks into the AML debugger if the debugger is present. This matches the 1225ACPI-defined behavior. 1226 1227Fixed several possible warnings related to the use of the configurable 1228ACPI_THREAD_ID. This type can now be configured as either an integer or a 1229pointer with no warnings. Also fixes several warnings in printf-like 1230statements for the 64-bit build when the type is configured as a pointer. 1231ACPICA BZ 766, 767. 1232 1233Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1234warning options.) Examples include printf formats, aliasing, unused globals, 1235missing prototypes, missing switch default statements, use of non-ANSI 1236library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1237a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1238 1239Example Code and Data Size: These are the sizes for the OS-independent 1240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1241debug version of the code includes the debug output trace mechanism and has a 1242much larger code and data size. 1243 1244 Previous Release: 1245 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1246 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1247 Current Release: 1248 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1249 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1250 12512) iASL Compiler/Disassembler and Tools: 1252 1253iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1254the 64-bit build. 1255 1256iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1257correctly digest Windows/DOS formatted files (with CR/LF). 1258 1259iASL: Added a new option for "quiet mode" (-va) that produces only the 1260compilation summary, not individual errors and warnings. Useful for large 1261batch compilations. 1262 1263AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1264timeout that can be used to detect hang conditions during execution of AML 1265code (includes both internal semaphores and AML-defined mutexes and events.) 1266 1267Added new makefiles for the generation of acpica in a generic unix-like 1268environment. These makefiles are intended to generate the acpica tools and 1269utilities from the original acpica git source tree structure. 1270 1271Test Suites: Updated and cleaned up the documentation files. Updated the 1272copyrights to 2009, affecting all source files. Use the new version of iASL 1273with quiet mode. Increased the number of available semaphores in the Windows 1274OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1275an alternate implementation of the semaphore timeout to allow aslts to 1276execute fully on Cygwin. 1277 1278---------------------------------------- 127920 March 2009. Summary of changes for version 20090320: 1280 12811) ACPI CA Core Subsystem: 1282 1283Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1284unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1285namespace walks (readers), but block a dynamic table unload until it can gain 1286exclusive write access to the namespace. This fixes a problem where a table 1287unload could (possibly catastrophically) delete the portion of the namespace 1288that is currently being examined by a walk. Adds a new file, utlock.c, that 1289implements the reader/writer lock mechanism. ACPICA BZ 749. 1290 1291Fixed a regression introduced in version 20090220 where a change to the FADT 1292handling could cause the ACPICA subsystem to access non-existent I/O ports. 1293 1294Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1295FADT can contain both 32-bit and 64-bit versions of these addresses. 1296Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1297versions were valid, but not equal, the 64-bit version was used. This was 1298found to cause some machines to fail. Now, in this case, the 32-bit version 1299is used instead. This now matches the Windows behavior. 1300 1301Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1302compatibility and protects the standard PC I/O ports from access via AML 1303code. Adds a new file, hwvalid.c 1304 1305Fixed a possible extraneous warning message from the FADT support. The 1306message warns of a 32/64 length mismatch between the legacy and GAS 1307definitions for a register. 1308 1309Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1310made obsolete by the port protection mechanism above. It was previously used 1311to validate the entire address range of an operation region, which could be 1312incorrect if the range included illegal ports, but fields within the 1313operation region did not actually access those ports. Validation is now 1314performed on a per-field basis instead of the entire region. 1315 1316Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1317Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1318means a read/modify/write when writing to the register. However, for status 1319registers, writing a one means clear the event. Writing a zero means preserve 1320the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1321and the ACPICA code now simply always writes a zero to the ignored bit. 1322 1323Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1324per the ACPI specification, for the control registers, preserve 1325(read/modify/write) all bits that are defined as either reserved or ignored. 1326 1327Updated the handling of write-only bits in the PM1 A/B Control Registers. 1328When reading the register, zero the write-only bits as per the ACPI spec. 1329ACPICA BZ 443. Lin Ming. 1330 1331Removed "Linux" from the list of supported _OSI strings. Linux no longer 1332wants to reply true to this request. The Windows strings are the only paths 1333through the AML that are tested and known to work properly. 1334 1335 Previous Release: 1336 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1337 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1338 Current Release: 1339 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1340 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1341 13422) iASL Compiler/Disassembler and Tools: 1343 1344Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1345aetables.c 1346 1347---------------------------------------- 134820 February 2009. Summary of changes for version 20090220: 1349 13501) ACPI CA Core Subsystem: 1351 1352Optimized the ACPI register locking. Removed locking for reads from the ACPI 1353bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1354not required when reading the single-bit registers. The 1355AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1356This will improve performance for reads on these registers. ACPICA BZ 760. 1357 1358Fixed the parameter validation for AcpiRead/Write. Now return 1359AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1360the register has an address of zero. Previously, these cases simply returned 1361AE_OK. For optional registers such as PM1B status/enable/control, the caller 1362should check for a valid register address before calling. ACPICA BZ 748. 1363 1364Renamed the external ACPI bit register access functions. Renamed 1365AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1366functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1367Also, restructured the code for these functions by simplifying the code path 1368and condensing duplicate code to reduce code size. 1369 1370Added new functions to transparently handle the possibly split PM1 A/B 1371registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1372now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1373746. 1374 1375Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1376This function writes both of the PM1 control registers (A/B). These registers 1377are different than the PM1 A/B status and enable registers in that different 1378values can be written to the A/B registers. Most notably, the SLP_TYP bits 1379can be different, as per the values returned from the _Sx predefined methods. 1380 1381Removed an extra register write within AcpiHwClearAcpiStatus. This function 1382was writing an optional PM1B status register twice. The existing call to the 1383low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1384register. ACPICA BZ 751. 1385 1386Split out the PM1 Status registers from the FADT. Added new globals for these 1387registers (A/B), similar to the way the PM1 Enable registers are handled. 1388Instead of overloading the FADT Event Register blocks. This makes the code 1389clearer and less prone to error. 1390 1391Fixed the warning message for when the platform contains too many ACPI tables 1392for the default size of the global root table data structure. The calculation 1393for the truncation value was incorrect. 1394 1395Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1396obsolete macro, since it is now a simple reference to ->common.type. There 1397were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1398 1399Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1400TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1401simply SLEEP_TYPE. ACPICA BZ 754. 1402 1403Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1404function is only needed on 64-bit host operating systems and is thus not 1405included for 32-bit hosts. 1406 1407Debug output: print the input and result for invocations of the _OSI reserved 1408control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1409verbosity of this debug level. Len Brown. 1410 1411Example Code and Data Size: These are the sizes for the OS-independent 1412acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1413debug version of the code includes the debug output trace mechanism and has a 1414much larger code and data size. 1415 1416 Previous Release: 1417 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1418 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1419 Current Release: 1420 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1421 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1422 14232) iASL Compiler/Disassembler and Tools: 1424 1425Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1426various legal performance profiles. 1427 1428---------------------------------------- 142923 January 2009. Summary of changes for version 20090123: 1430 14311) ACPI CA Core Subsystem: 1432 1433Added the 2009 copyright to all module headers and signons. This affects 1434virtually every file in the ACPICA core subsystem, the iASL compiler, and 1435the tools/utilities. 1436 1437Implemented a change to allow the host to override any ACPI table, including 1438dynamically loaded tables. Previously, only the DSDT could be replaced by the 1439host. With this change, the AcpiOsTableOverride interface is called for each 1440table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1441a table is dynamically loaded via the AML Load operator. 1442 1443Updated FADT flag definitions, especially the Boot Architecture flags. 1444 1445Debugger: For the Find command, automatically pad the input ACPI name with 1446underscores if the name is shorter than 4 characters. This enables a match 1447with the actual namespace entry which is itself padded with underscores. 1448 1449Example Code and Data Size: These are the sizes for the OS-independent 1450acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1451debug version of the code includes the debug output trace mechanism and has a 1452much larger code and data size. 1453 1454 Previous Release: 1455 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1456 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1457 Current Release: 1458 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1459 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1460 14612) iASL Compiler/Disassembler and Tools: 1462 1463Fix build error under Bison-2.4. 1464 1465Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1466flags. Now decode all flags, regardless of the FADT version. Flag output 1467includes the FADT version which first defined each flag. 1468 1469The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1470DSDT). Windows only. 1471 1472---------------------------------------- 147304 December 2008. Summary of changes for version 20081204: 1474 14751) ACPI CA Core Subsystem: 1476 1477The ACPICA Programmer Reference has been completely updated and revamped for 1478this release. This includes updates to the external interfaces, OSL 1479interfaces, the overview sections, and the debugger reference. 1480 1481Several new ACPICA interfaces have been implemented and documented in the 1482programmer reference: 1483AcpiReset - Writes the reset value to the FADT-defined reset register. 1484AcpiDisableAllGpes - Disable all available GPEs. 1485AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1486AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1487AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1488AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1489AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1490 1491Most of the public ACPI hardware-related interfaces have been moved to a new 1492file, components/hardware/hwxface.c 1493 1494Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1495register lengths within the FADT are now used, and the low level ACPI 1496register access no longer hardcodes the ACPI register lengths. Given that 1497there may be some risk in actually trusting the FADT register lengths, a run- 1498time option was added to fall back to the default hardcoded lengths if the 1499FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1500option is set to true for now, and a warning is issued if a suspicious FADT 1501register length is overridden with the default value. 1502 1503Fixed a reference count issue in NsRepairObject. This problem was introduced 1504in version 20081031 as part of a fix to repair Buffer objects within 1505Packages. Lin Ming. 1506 1507Added semaphore support to the Linux/Unix application OS-services layer 1508(OSL). ACPICA BZ 448. Lin Ming. 1509 1510Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1511be implemented in the OSL, or will binary semaphores be used instead. 1512 1513Example Code and Data Size: These are the sizes for the OS-independent 1514acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1515debug version of the code includes the debug output trace mechanism and has a 1516much larger code and data size. 1517 1518 Previous Release: 1519 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1520 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1521 Current Release: 1522 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1523 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1524 15252) iASL Compiler/Disassembler and Tools: 1526 1527iASL: Completed the '-e' option to include additional ACPI tables in order to 1528aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1529Ming. 1530 1531iASL: Removed the "named object in while loop" error. The compiler cannot 1532determine how many times a loop will execute. ACPICA BZ 730. 1533 1534Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1535BZ 743. 1536 1537Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1538 1539---------------------------------------- 154031 October 2008. Summary of changes for version 20081031: 1541 15421) ACPI CA Core Subsystem: 1543 1544Restructured the ACPICA header files into public/private. acpi.h now includes 1545only the "public" acpica headers. All other acpica headers are "private" and 1546should not be included by acpica users. One new file, accommon.h is used to 1547include the commonly used private headers for acpica code generation. Future 1548plans include moving all private headers to a new subdirectory. 1549 1550Implemented an automatic Buffer->String return value conversion for 1551predefined ACPI methods. For these methods (such as _BIF), added automatic 1552conversion for return objects that are required to be a String, but a Buffer 1553was found instead. This can happen when reading string battery data from an 1554operation region, because it used to be difficult to convert the data from 1555buffer to string from within the ASL. Ensures that the host OS is provided 1556with a valid null-terminated string. Linux BZ 11822. 1557 1558Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1559into two: one for the 32-bit vector, another for the 64-bit vector. This is 1560required because the host OS must setup the wake much differently for each 1561vector (real vs. protected mode, etc.) and the interface itself should not be 1562deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1563interface, as it served no purpose (only the firmware reads the vector, OS 1564only writes the vector.) ACPICA BZ 731. 1565 1566Implemented a mechanism to escape infinite AML While() loops. Added a loop 1567counter to force exit from AML While loops if the count becomes too large. 1568This can occur in poorly written AML when the hardware does not respond 1569within a while loop and the loop does not implement a timeout. The maximum 1570loop count is configurable. A new exception code is returned when a loop is 1571broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1572 1573Optimized the execution of AML While loops. Previously, a control state 1574object was allocated and freed for each execution of the loop. The 1575optimization is to simply reuse the control state for each iteration. This 1576speeds up the raw loop execution time by about 5%. 1577 1578Enhanced the implicit return mechanism. For Windows compatibility, return an 1579implicit integer of value zero for methods that contain no executable code. 1580Such methods are seen in the field as stubs (presumably), and can cause 1581drivers to fail if they expect a return value. Lin Ming. 1582 1583Allow multiple backslashes as root prefixes in namepaths. In a fully 1584qualified namepath, allow multiple backslash prefixes. This can happen (and 1585is seen in the field) because of the use of a double-backslash in strings 1586(since backslash is the escape character) causing confusion. ACPICA BZ 739 1587Lin Ming. 1588 1589Emit a warning if two different FACS or DSDT tables are discovered in the 1590FADT. Checks if there are two valid but different addresses for the FACS and 1591DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1592 1593Consolidated the method argument count validation code. Merged the code that 1594validates control method argument counts into the predefined validation 1595module. Eliminates possible multiple warnings for incorrect argument counts. 1596 1597Implemented ACPICA example code. Includes code for ACPICA initialization, 1598handler installation, and calling a control method. Available at 1599source/tools/examples. 1600 1601Added a global pointer for FACS table to simplify internal FACS access. Use 1602the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1603This simplifies the code for the Global Lock and the Firmware Waking 1604Vector(s). 1605 1606Example Code and Data Size: These are the sizes for the OS-independent 1607acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1608debug version of the code includes the debug output trace mechanism and has a 1609much larger code and data size. 1610 1611 Previous Release: 1612 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1613 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1614 Current Release: 1615 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1616 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1617 16182) iASL Compiler/Disassembler and Tools: 1619 1620iASL: Improved disassembly of external method calls. Added the -e option to 1621allow the inclusion of additional ACPI tables to help with the disassembly of 1622method invocations and the generation of external declarations during the 1623disassembly. Certain external method invocations cannot be disassembled 1624properly without the actual declaration of the method. Use the -e option to 1625include the table where the external method(s) are actually declared. Most 1626useful for disassembling SSDTs that make method calls back to the master 1627DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1628-e dsdt.aml ssdt1.aml 1629 1630iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1631problem where the use of an alias within a namepath would result in a not 1632found error or cause the compiler to fault. Also now allows forward 1633references from the Alias operator itself. ACPICA BZ 738. 1634 1635---------------------------------------- 163626 September 2008. Summary of changes for version 20080926: 1637 16381) ACPI CA Core Subsystem: 1639 1640Designed and implemented a mechanism to validate predefined ACPI methods and 1641objects. This code validates the predefined ACPI objects (objects whose names 1642start with underscore) that appear in the namespace, at the time they are 1643evaluated. The argument count and the type of the returned object are 1644validated against the ACPI specification. The purpose of this validation is 1645to detect problems with the BIOS-implemented predefined ACPI objects before 1646the results are returned to the ACPI-related drivers. Future enhancements may 1647include actual repair of incorrect return objects where possible. Two new 1648files are nspredef.c and acpredef.h. 1649 1650Fixed a fault in the AML parser if a memory allocation fails during the Op 1651completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1652 1653Fixed an issue with implicit return compatibility. This change improves the 1654implicit return mechanism to be more compatible with the MS interpreter. Lin 1655Ming, ACPICA BZ 349. 1656 1657Implemented support for zero-length buffer-to-string conversions. Allow zero 1658length strings during interpreter buffer-to-string conversions. For example, 1659during the ToDecimalString and ToHexString operators, as well as implicit 1660conversions. Fiodor Suietov, ACPICA BZ 585. 1661 1662Fixed two possible memory leaks in the error exit paths of 1663AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1664similar in that they use a stack of state objects in order to eliminate 1665recursion. The stack must be fully unwound and deallocated if an error 1666occurs. Lin Ming. ACPICA BZ 383. 1667 1668Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1669ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1670Moore ACPICA BZ 442. 1671 1672Removed the obsolete version number in module headers. Removed the 1673"$Revision" number that appeared in each module header. This version number 1674was useful under SourceSafe and CVS, but has no meaning under git. It is not 1675only incorrect, it could also be misleading. 1676 1677Example Code and Data Size: These are the sizes for the OS-independent 1678acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1679debug version of the code includes the debug output trace mechanism and has a 1680much larger code and data size. 1681 1682 Previous Release: 1683 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1684 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1685 Current Release: 1686 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1687 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1688 1689---------------------------------------- 169029 August 2008. Summary of changes for version 20080829: 1691 16921) ACPI CA Core Subsystem: 1693 1694Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1695Reference. Changes include the elimination of cheating on the Object field 1696for the DdbHandle subtype, addition of a reference class field to 1697differentiate the various reference types (instead of an AML opcode), and the 1698cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1699 1700Reduce an error to a warning for an incorrect method argument count. 1701Previously aborted with an error if too few arguments were passed to a 1702control method via the external ACPICA interface. Now issue a warning instead 1703and continue. Handles the case where the method inadvertently declares too 1704many arguments, but does not actually use the extra ones. Applies mainly to 1705the predefined methods. Lin Ming. Linux BZ 11032. 1706 1707Disallow the evaluation of named object types with no intrinsic value. Return 1708AE_TYPE for objects that have no value and therefore evaluation is undefined: 1709Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1710these types were allowed, but an exception would be generated at some point 1711during the evaluation. Now, the error is generated up front. 1712 1713Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1714(nsnames.c). Fixes a leak in the error exit path. 1715 1716Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1717levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1718interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1719ACPI_LV_EVENTS. 1720 1721Removed obsolete and/or unused exception codes from the acexcep.h header. 1722There is the possibility that certain device drivers may be affected if they 1723use any of these exceptions. 1724 1725The ACPICA documentation has been added to the public git source tree, under 1726acpica/documents. Included are the ACPICA programmer reference, the iASL 1727compiler reference, and the changes.txt release logfile. 1728 1729Example Code and Data Size: These are the sizes for the OS-independent 1730acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1731debug version of the code includes the debug output trace mechanism and has a 1732much larger code and data size. 1733 1734 Previous Release: 1735 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1736 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1737 Current Release: 1738 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1739 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1740 17412) iASL Compiler/Disassembler and Tools: 1742 1743Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1744defines _SCP with 3 arguments. Previous versions defined it with only 1 1745argument. iASL now allows both definitions. 1746 1747iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1748length subtables when disassembling ACPI tables. Also fixed a couple of 1749errors where a full 16-bit table type field was not extracted from the input 1750properly. 1751 1752acpisrc: Improve comment counting mechanism for generating source code 1753statistics. Count first and last lines of multi-line comments as whitespace, 1754not comment lines. Handle Linux legal header in addition to standard acpica 1755header. 1756 1757---------------------------------------- 1758 175929 July 2008. Summary of changes for version 20080729: 1760 17611) ACPI CA Core Subsystem: 1762 1763Fix a possible deadlock in the GPE dispatch. Remove call to 1764AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1765to acquire the GPE lock but can deadlock since the GPE lock is already held 1766at dispatch time. This code was introduced in version 20060831 as a response 1767to Linux BZ 6881 and has since been removed from Linux. 1768 1769Add a function to dereference returned reference objects. Examines the return 1770object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1771automatically dereferenced in an attempt to return something useful (these 1772reference types cannot be converted into an external ACPI_OBJECT.) Provides 1773MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1774 1775x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1776subtables for the MADT and one new subtable for the SRAT. Includes 1777disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1778Specification, June 2008. 1779 1780Additional error checking for pathname utilities. Add error check after all 1781calls to AcpiNsGetPathnameLength. Add status return from 1782AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1783to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1784 1785Return status from the global init function AcpiUtGlobalInitialize. This is 1786used by both the kernel subsystem and the utilities such as iASL compiler. 1787The function could possibly fail when the caches are initialized. Yang Yi. 1788 1789Add a function to decode reference object types to strings. Created for 1790improved error messages. 1791 1792Improve object conversion error messages. Better error messages during object 1793conversion from internal to the external ACPI_OBJECT. Used for external calls 1794to AcpiEvaluateObject. 1795 1796Example Code and Data Size: These are the sizes for the OS-independent 1797acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1798debug version of the code includes the debug output trace mechanism and has a 1799much larger code and data size. 1800 1801 Previous Release: 1802 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1803 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1804 Current Release: 1805 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1806 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1807 18082) iASL Compiler/Disassembler and Tools: 1809 1810Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1811introduced in version 20080701. If the object being evaluated (via execute 1812command) is not a method, the debugger can hang while trying to obtain non- 1813existent parameters. 1814 1815iASL: relax error for using reserved "_T_x" identifiers. These names can 1816appear in a disassembled ASL file if they were emitted by the original 1817compiler. Instead of issuing an error or warning and forcing the user to 1818manually change these names, issue a remark instead. 1819 1820iASL: error if named object created in while loop. Emit an error if any named 1821object is created within a While loop. If allowed, this code will generate a 1822run-time error on the second iteration of the loop when an attempt is made to 1823create the same named object twice. ACPICA bugzilla 730. 1824 1825iASL: Support absolute pathnames for include files. Add support for absolute 1826pathnames within the Include operator. previously, only relative pathnames 1827were supported. 1828 1829iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1830The ACPI spec requires one interrupt minimum. BZ 423 1831 1832iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1833Handles the case for the Interrupt Resource Descriptor where 1834the ResourceSource argument is omitted but ResourceSourceIndex 1835is present. Now leave room for the Index. BZ 426 1836 1837iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1838where an error message is emitted if the target does not exist. BZ 516 1839 1840iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1841(get ACPI tables on Windows). This was apparently broken in version 20070919. 1842 1843AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1844the EOF happens immediately after the last table in the input file. Print 1845completion message. Previously, no message was displayed in this case. 1846 1847---------------------------------------- 184801 July 2008. Summary of changes for version 20080701: 1849 18500) Git source tree / acpica.org 1851 1852Fixed a problem where a git-clone from http would not transfer the entire 1853source tree. 1854 18551) ACPI CA Core Subsystem: 1856 1857Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1858enable bit. Now performs a read-change-write of the enable register instead 1859of simply writing out the cached enable mask. This will prevent inadvertent 1860enabling of GPEs if a rogue GPE is received during initialization (before GPE 1861handlers are installed.) 1862 1863Implemented a copy for dynamically loaded tables. Previously, dynamically 1864loaded tables were simply mapped - but on some machines this memory is 1865corrupted after suspend. Now copy the table to a local buffer. For the 1866OpRegion case, added checksum verify. Use the table length from the table 1867header, not the region length. For the Buffer case, use the table length 1868also. Dennis Noordsij, Bob Moore. BZ 10734 1869 1870Fixed a problem where the same ACPI table could not be dynamically loaded and 1871unloaded more than once. Without this change, a table cannot be loaded again 1872once it has been loaded/unloaded one time. The current mechanism does not 1873unregister a table upon an unload. During a load, if the same table is found, 1874this no longer returns an exception. BZ 722 1875 1876Fixed a problem where the wrong descriptor length was calculated for the 1877EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1878are calculated as 12 bytes long, but the actual length in the internal 1879descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1880by Linn Crosetto. BZ 728 1881 1882Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1883by Load() did not have its reference count decremented during unload, leading 1884to a memory leak. Lin Ming. BZ 727 1885 1886Fixed a possible memory leak when deleting thermal/processor objects. Any 1887associated notify handlers (and objects) were not being deleted. Fiodor 1888Suietov. BZ 506 1889 1890Fixed the ordering of the ASCII names in the global mutex table to match the 1891actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1892Vegard Nossum. BZ 726 1893 1894Enhanced the AcpiGetObjectInfo interface to return the number of required 1895arguments if the object is a control method. Added this call to the debugger 1896so the proper number of default arguments are passed to a method. This 1897prevents a warning when executing methods from AcpiExec. 1898 1899Added a check for an invalid handle in AcpiGetObjectInfo. Return 1900AE_BAD_PARAMETER if input handle is invalid. BZ 474 1901 1902Fixed an extraneous warning from exconfig.c on the 64-bit build. 1903 1904Example Code and Data Size: These are the sizes for the OS-independent 1905acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1906debug version of the code includes the debug output trace mechanism and has a 1907much larger code and data size. 1908 1909 Previous Release: 1910 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1911 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1912 Current Release: 1913 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1914 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1915 19162) iASL Compiler/Disassembler and Tools: 1917 1918iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1919resource descriptor names. 1920 1921iASL: Detect invalid ASCII characters in input (windows version). Removed the 1922"-CF" flag from the flex compile, enables correct detection of non-ASCII 1923characters in the input. BZ 441 1924 1925iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1926"result of operation not used" warning when the DDB handle returned from 1927LoadTable is not used. The warning is not needed. BZ 590 1928 1929AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1930pass address of table to the AML. Added option to disable OpRegion simulation 1931to allow creation of an OpRegion with a real address that was passed to _CFG. 1932All of this allows testing of the Load and Unload operators from AcpiExec. 1933 1934Debugger: update tables command for unloaded tables. Handle unloaded tables 1935and use the standard table header output routine. 1936 1937---------------------------------------- 193809 June 2008. Summary of changes for version 20080609: 1939 19401) ACPI CA Core Subsystem: 1941 1942Implemented a workaround for reversed _PRT entries. A significant number of 1943BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1944change dynamically detects and repairs this problem. Provides compatibility 1945with MS ACPI. BZ 6859 1946 1947Simplified the internal ACPI hardware interfaces to eliminate the locking 1948flag parameter from Register Read/Write. Added a new external interface, 1949AcpiGetRegisterUnlocked. 1950 1951Fixed a problem where the invocation of a GPE control method could hang. This 1952was a regression introduced in 20080514. The new method argument count 1953validation mechanism can enter an infinite loop when a GPE method is 1954dispatched. Problem fixed by removing the obsolete code that passed GPE block 1955information to the notify handler via the control method parameter pointer. 1956 1957Fixed a problem where the _SST execution status was incorrectly returned to 1958the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 195920080514. _SST is optional and a NOT_FOUND exception should never be 1960returned. BZ 716 1961 1962Fixed a problem where a deleted object could be accessed from within the AML 1963parser. This was a regression introduced in version 20080123 as a fix for the 1964Unload operator. Lin Ming. BZ 10669 1965 1966Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1967and eliminated the use of a negative index in a loop. Operands are now 1968displayed in the correct order, not backwards. This also fixes a regression 1969introduced in 20080514 on 64-bit systems where the elimination of 1970ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1971 1972Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1973path did not delete a locally allocated structure. 1974 1975Updated definitions for the DMAR and SRAT tables to synchronize with the 1976current specifications. Includes disassembler support. 1977 1978Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1979loop termination value was used. Loop terminated on iteration early, missing 1980one mutex. Linn Crosetto 1981 1982Example Code and Data Size: These are the sizes for the OS-independent 1983acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1984debug version of the code includes the debug output trace mechanism and has a 1985much larger code and data size. 1986 1987 Previous Release: 1988 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1989 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1990 Current Release: 1991 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1992 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1993 19942) iASL Compiler/Disassembler and Tools: 1995 1996Disassembler: Implemented support for EisaId() within _CID objects. Now 1997disassemble integer _CID objects back to EisaId invocations, including 1998multiple integers within _CID packages. Includes single-step support for 1999debugger also. 2000 2001Disassembler: Added support for DMAR and SRAT table definition changes. 2002 2003---------------------------------------- 200414 May 2008. Summary of changes for version 20080514: 2005 20061) ACPI CA Core Subsystem: 2007 2008Fixed a problem where GPEs were enabled too early during the ACPICA 2009initialization. This could lead to "handler not installed" errors on some 2010machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 2011ensures that all operation regions and devices throughout the namespace have 2012been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 2013 2014Implemented a change to the enter sleep code. Moved execution of the _GTS 2015method to just before setting sleep enable bit. The execution was moved from 2016AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 2017immediately before the SLP_EN bit is set, as per the ACPI specification. 2018Luming Yu, BZ 1653. 2019 2020Implemented a fix to disable unknown GPEs (2nd version). Now always disable 2021the GPE, even if ACPICA thinks that that it is already disabled. It is 2022possible that the AML or some other code has enabled the GPE unbeknownst to 2023the ACPICA code. 2024 2025Fixed a problem with the Field operator where zero-length fields would return 2026an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 2027field declarations in Field(), BankField(), and IndexField(). BZ 10606. 2028 2029Implemented a fix for the Load operator, now load the table at the namespace 2030root. This reverts a change introduced in version 20071019. The table is now 2031loaded at the namespace root even though this goes against the ACPI 2032specification. This provides compatibility with other ACPI implementations. 2033The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 2034 2035Fixed a problem where ACPICA would not Load() tables with unusual signatures. 2036Now ignore ACPI table signature for Load() operator. Only "SSDT" is 2037acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 2038Therefore, signature validation is worthless. Apparently MS ACPI accepts such 2039signatures, ACPICA must be compatible. BZ 10454. 2040 2041Fixed a possible negative array index in AcpiUtValidateException. Added NULL 2042fields to the exception string arrays to eliminate a -1 subtraction on the 2043SubStatus field. 2044 2045Updated the debug tracking macros to reduce overall code and data size. 2046Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 2047instead of pointers to static strings. Jan Beulich and Bob Moore. 2048 2049Implemented argument count checking in control method invocation via 2050AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 2051many. This applies only to extern programmatic control method execution, not 2052method-to-method calls within the AML. Lin Ming. 2053 2054Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 2055longer needed, especially with the removal of 16-bit support. It was replaced 2056mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 205732/64-bit platforms is required. 2058 2059Added the C const qualifier for appropriate string constants -- mostly 2060MODULE_NAME and printf format strings. Jan Beulich. 2061 2062Example Code and Data Size: These are the sizes for the OS-independent 2063acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2064debug version of the code includes the debug output trace mechanism and has a 2065much larger code and data size. 2066 2067 Previous Release: 2068 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2069 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2070 Current Release: 2071 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2072 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2073 20742) iASL Compiler/Disassembler and Tools: 2075 2076Implemented ACPI table revision ID validation in the disassembler. Zero is 2077always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2078means 32-bit and this is unusual. 2 or greater is 64-bit. 2079 2080---------------------------------------- 208121 March 2008. Summary of changes for version 20080321: 2082 20831) ACPI CA Core Subsystem: 2084 2085Implemented an additional change to the GPE support in order to suppress 2086spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2087disable incoming GPEs that are neither enabled nor disabled -- meaning that 2088the GPE is unknown to the system. This should prevent future interrupt floods 2089from that GPE. BZ 6217 (Zhang Rui) 2090 2091Fixed a problem where NULL package elements were not returned to the 2092AcpiEvaluateObject interface correctly. The element was simply ignored 2093instead of returning a NULL ACPI_OBJECT package element, potentially causing 2094a buffer overflow and/or confusing the caller who expected a fixed number of 2095elements. BZ 10132 (Lin Ming, Bob Moore) 2096 2097Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2098Qword), Field, BankField, and IndexField operators when invoked from inside 2099an executing control method. In this case, these operators created namespace 2100nodes that were incorrectly left marked as permanent nodes instead of 2101temporary nodes. This could cause a problem if there is race condition 2102between an exiting control method and a running namespace walk. (Reported by 2103Linn Crosetto) 2104 2105Fixed a problem where the CreateField and CreateXXXField operators would 2106incorrectly allow duplicate names (the name of the field) with no exception 2107generated. 2108 2109Implemented several changes for Notify handling. Added support for new Notify 2110values (ACPI 2.0+) and improved the Notify debug output. Notify on 2111PowerResource objects is no longer allowed, as per the ACPI specification. 2112(Bob Moore, Zhang Rui) 2113 2114All Reference Objects returned via the AcpiEvaluateObject interface are now 2115marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2116NULL objects - either NULL package elements or unresolved named references. 2117 2118Fixed a problem where an extraneous debug message was produced for package 2119objects (when debugging enabled). The message "Package List length larger 2120than NumElements count" is now produced in the correct case, and is now an 2121error message rather than a debug message. Added a debug message for the 2122opposite case, where NumElements is larger than the Package List (the package 2123will be padded out with NULL elements as per the ACPI spec.) 2124 2125Implemented several improvements for the output of the ASL "Debug" object to 2126clarify and keep all data for a given object on one output line. 2127 2128Fixed two size calculation issues with the variable-length Start Dependent 2129resource descriptor. 2130 2131Example Code and Data Size: These are the sizes for the OS-independent 2132acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2133debug version of the code includes the debug output trace mechanism and has 2134a much larger code and data size. 2135 2136 Previous Release: 2137 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2138 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2139 Current Release: 2140 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2141 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2142 21432) iASL Compiler/Disassembler and Tools: 2144 2145Fixed a problem with the use of the Switch operator where execution of the 2146containing method by multiple concurrent threads could cause an 2147AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2148actual Switch opcode, it must be simulated with local named temporary 2149variables and if/else pairs. The solution chosen was to mark any method that 2150uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2151 2152---------------------------------------- 215313 February 2008. Summary of changes for version 20080213: 2154 21551) ACPI CA Core Subsystem: 2156 2157Implemented another MS compatibility design change for GPE/Notify handling. 2158GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2159complete first. It is expected that the OSL will queue the enable request 2160behind all pending notify requests (may require changes to the local host OSL 2161in AcpiOsExecute). Alexey Starikovskiy. 2162 2163Fixed a problem where buffer and package objects passed as arguments to a 2164control method via the external AcpiEvaluateObject interface could cause an 2165AE_AML_INTERNAL exception depending on the order and type of operators 2166executed by the target control method. 2167 2168Fixed a problem where resource descriptor size optimization could cause a 2169problem when a _CRS resource template is passed to a _SRS method. The _SRS 2170resource template must use the same descriptors (with the same size) as 2171returned from _CRS. This change affects the following resource descriptors: 2172IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2173 2174Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2175objects did not perform an implicit conversion as it should. These types must 2176retain their initial type permanently as per the ACPI specification. However, 2177a CopyObject to all other object types should not perform an implicit 2178conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2179 2180Fixed a problem with the AcpiGetDevices interface where the mechanism to 2181match device CIDs did not examine the entire list of available CIDs, but 2182instead aborted on the first non-matching CID. Andrew Patterson. 2183 2184Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2185inadvertently changed to return a 16-bit value instead of a 32-bit value, 2186truncating the upper dword of a 64-bit value. This macro is only used to 2187display debug output, so no incorrect calculations were made. Also, 2188reimplemented the macro so that a 64-bit shift is not performed by 2189inefficient compilers. 2190 2191Added missing va_end statements that should correspond with each va_start 2192statement. 2193 2194Example Code and Data Size: These are the sizes for the OS-independent 2195acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2196debug version of the code includes the debug output trace mechanism and has 2197a much larger code and data size. 2198 2199 Previous Release: 2200 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2201 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2202 Current Release: 2203 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2204 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2205 22062) iASL Compiler/Disassembler and Tools: 2207 2208Implemented full disassembler support for the following new ACPI tables: 2209BERT, EINJ, and ERST. Implemented partial disassembler support for the 2210complicated HEST table. These tables support the Windows Hardware Error 2211Architecture (WHEA). 2212 2213---------------------------------------- 221423 January 2008. Summary of changes for version 20080123: 2215 22161) ACPI CA Core Subsystem: 2217 2218Added the 2008 copyright to all module headers and signons. This affects 2219virtually every file in the ACPICA core subsystem, the iASL compiler, and 2220the tools/utilities. 2221 2222Fixed a problem with the SizeOf operator when used with Package and Buffer 2223objects. These objects have deferred execution for some arguments, and the 2224execution is now completed before the SizeOf is executed. This problem caused 2225unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 22269558 2227 2228Implemented an enhancement to the interpreter "slack mode". In the absence of 2229an explicit return or an implicitly returned object from the last executed 2230opcode, a control method will now implicitly return an integer of value 0 for 2231Microsoft compatibility. (Lin Ming) BZ 392 2232 2233Fixed a problem with the Load operator where an exception was not returned in 2234the case where the table is already loaded. (Lin Ming) BZ 463 2235 2236Implemented support for the use of DDBHandles as an Indexed Reference, as per 2237the ACPI spec. (Lin Ming) BZ 486 2238 2239Implemented support for UserTerm (Method invocation) for the Unload operator 2240as per the ACPI spec. (Lin Ming) BZ 580 2241 2242Fixed a problem with the LoadTable operator where the OemId and OemTableId 2243input strings could cause unexpected failures if they were shorter than the 2244maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2245 2246Implemented support for UserTerm (Method invocation) for the Unload operator 2247as per the ACPI spec. (Lin Ming) BZ 580 2248 2249Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2250IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2251 2252Example Code and Data Size: These are the sizes for the OS-independent 2253acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2254debug version of the code includes the debug output trace mechanism and has 2255a much larger code and data size. 2256 2257 Previous Release: 2258 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2259 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2260 Current Release: 2261 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2262 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2263 22642) iASL Compiler/Disassembler and Tools: 2265 2266Implemented support in the disassembler for checksum validation on incoming 2267binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2268header dump at the start of the disassembly. 2269 2270Implemented additional debugging information in the namespace listing file 2271created during compilation. In addition to the namespace hierarchy, the full 2272pathname to each namespace object is displayed. 2273 2274Fixed a problem with the disassembler where invalid ACPI tables could cause 2275faults or infinite loops. 2276 2277Fixed an unexpected parse error when using the optional "parameter types" 2278list in a control method declaration. (Lin Ming) BZ 397 2279 2280Fixed a problem where two External declarations with the same name did not 2281cause an error (Lin Ming) BZ 509 2282 2283Implemented support for full TermArgs (adding Argx, Localx and method 2284invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2285Ming) BZ 583,587 2286 2287---------------------------------------- 228819 December 2007. Summary of changes for version 20071219: 2289 22901) ACPI CA Core Subsystem: 2291 2292Implemented full support for deferred execution for the TermArg string 2293arguments for DataTableRegion. This enables forward references and full 2294operand resolution for the three string arguments. Similar to OperationRegion 2295deferred argument execution.) Lin Ming. BZ 430 2296 2297Implemented full argument resolution support for the BankValue argument to 2298BankField. Previously, only constants were supported, now any TermArg may be 2299used. Lin Ming BZ 387, 393 2300 2301Fixed a problem with AcpiGetDevices where the search of a branch of the 2302device tree could be terminated prematurely. In accordance with the ACPI 2303specification, the search down the current branch is terminated if a device 2304is both not present and not functional (instead of just not present.) Yakui 2305Zhao. 2306 2307Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2308the underlying AML code changed the GPE enable registers. Now, any unknown 2309incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2310instead of simply ignored. Rui Zhang. 2311 2312Fixed a problem with Index Fields where the Index register was incorrectly 2313limited to a maximum of 32 bits. Now any size may be used. 2314 2315Fixed a couple memory leaks associated with "implicit return" objects when 2316the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2317 2318Example Code and Data Size: These are the sizes for the OS-independent 2319acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2320debug version of the code includes the debug output trace mechanism and has 2321a much larger code and data size. 2322 2323 Previous Release: 2324 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2325 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2326 Current Release: 2327 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2328 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2329 2330---------------------------------------- 233114 November 2007. Summary of changes for version 20071114: 2332 23331) ACPI CA Core Subsystem: 2334 2335Implemented event counters for each of the Fixed Events, the ACPI SCI 2336(interrupt) itself, and control methods executed. Named 2337AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2338should be useful for debugging and statistics. 2339 2340Implemented a new external interface, AcpiGetStatistics, to retrieve the 2341contents of the various event counters. Returns the current values for 2342AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2343AcpiMethodCount. The interface can be expanded in the future if new counters 2344are added. Device drivers should use this interface rather than access the 2345counters directly. 2346 2347Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2348the ShortDivide function worked incorrectly, causing problems with the BCD 2349functions with large input values. A truncation from 64-bit to 32-bit 2350inadvertently occurred. Internal BZ 435. Lin Ming 2351 2352Fixed a problem with Index references passed as method arguments. References 2353passed as arguments to control methods were dereferenced immediately (before 2354control was passed to the called method). The references are now correctly 2355passed directly to the called method. BZ 5389. Lin Ming 2356 2357Fixed a problem with CopyObject used in conjunction with the Index operator. 2358The reference was incorrectly dereferenced before the copy. The reference is 2359now correctly copied. BZ 5391. Lin Ming 2360 2361Fixed a problem with Control Method references within Package objects. These 2362references are now correctly generated. This completes the package 2363construction overhaul that began in version 20071019. 2364 2365Example Code and Data Size: These are the sizes for the OS-independent 2366acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2367debug version of the code includes the debug output trace mechanism and has 2368a much larger code and data size. 2369 2370 Previous Release: 2371 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2372 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2373 Current Release: 2374 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2375 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2376 2377 23782) iASL Compiler/Disassembler and Tools: 2379 2380The AcpiExec utility now installs handlers for all of the predefined 2381Operation Region types. New types supported are: PCI_Config, CMOS, and 2382PCIBARTarget. 2383 2384Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2385bit) address fields for the DSDT and FACS within the FADT were not being 2386used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2387and Bob Moore 2388 2389---------------------------------------- 239019 October 2007. Summary of changes for version 20071019: 2391 23921) ACPI CA Core Subsystem: 2393 2394Fixed a problem with the Alias operator when the target of the alias is a 2395named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2396Processor, and ThermalZone. In these cases, any children of the original 2397operator could not be accessed via the alias, potentially causing unexpected 2398AE_NOT_FOUND exceptions. (BZ 9067) 2399 2400Fixed a problem with the Package operator where all named references were 2401created as object references and left otherwise unresolved. According to the 2402ACPI specification, a Package can only contain Data Objects or references to 2403control methods. The implication is that named references to Data Objects 2404(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2405immediately upon package creation. This is the approach taken with this 2406change. References to all other named objects (Methods, Devices, Scopes, 2407etc.) are all now properly created as reference objects. (BZ 5328) 2408 2409Reverted a change to Notify handling that was introduced in version 241020070508. This version changed the Notify handling from asynchronous to 2411fully synchronous (Device driver Notify handling with respect to the Notify 2412ASL operator). It was found that this change caused more problems than it 2413solved and was removed by most users. 2414 2415Fixed a problem with the Increment and Decrement operators where the type of 2416the target object could be unexpectedly and incorrectly changed. (BZ 353) 2417Lin Ming. 2418 2419Fixed a problem with the Load and LoadTable operators where the table 2420location within the namespace was ignored. Instead, the table was always 2421loaded into the root or current scope. Lin Ming. 2422 2423Fixed a problem with the Load operator when loading a table from a buffer 2424object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2425 2426Fixed a problem with the Debug object where a store of a DdbHandle reference 2427object to the Debug object could cause a fault. 2428 2429Added a table checksum verification for the Load operator, in the case where 2430the load is from a buffer. (BZ 578). 2431 2432Implemented additional parameter validation for the LoadTable operator. The 2433length of the input strings SignatureString, OemIdString, and OemTableId are 2434now checked for maximum lengths. (BZ 582) Lin Ming. 2435 2436Example Code and Data Size: These are the sizes for the OS-independent 2437acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2438debug version of the code includes the debug output trace mechanism and has 2439a much larger code and data size. 2440 2441 Previous Release: 2442 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2443 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2444 Current Release: 2445 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2446 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2447 2448 24492) iASL Compiler/Disassembler: 2450 2451Fixed a problem where if a single file was specified and the file did not 2452exist, no error message was emitted. (Introduced with wildcard support in 2453version 20070917.) 2454 2455---------------------------------------- 245619 September 2007. Summary of changes for version 20070919: 2457 24581) ACPI CA Core Subsystem: 2459 2460Designed and implemented new external interfaces to install and remove 2461handlers for ACPI table-related events. Current events that are defined are 2462LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2463they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2464AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2465 2466Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2467(acpi_serialized option on Linux) could cause some systems to hang during 2468initialization. (Bob Moore) BZ 8171 2469 2470Fixed a problem where objects of certain types (Device, ThermalZone, 2471Processor, PowerResource) can be not found if they are declared and 2472referenced from within the same control method (Lin Ming) BZ 341 2473 2474Example Code and Data Size: These are the sizes for the OS-independent 2475acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2476debug version of the code includes the debug output trace mechanism and has 2477a much larger code and data size. 2478 2479 Previous Release: 2480 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2481 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2482 Current Release: 2483 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2484 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2485 2486 24872) iASL Compiler/Disassembler: 2488 2489Implemented support to allow multiple files to be compiled/disassembled in a 2490single invocation. This includes command line wildcard support for both the 2491Windows and Unix versions of the compiler. This feature simplifies the 2492disassembly and compilation of multiple ACPI tables in a single directory. 2493 2494---------------------------------------- 249508 May 2007. Summary of changes for version 20070508: 2496 24971) ACPI CA Core Subsystem: 2498 2499Implemented a Microsoft compatibility design change for the handling of the 2500Notify AML operator. Previously, notify handlers were dispatched and 2501executed completely asynchronously in a deferred thread. The new design 2502still executes the notify handlers in a different thread, but the original 2503thread that executed the Notify() now waits at a synchronization point for 2504the notify handler to complete. Some machines depend on a synchronous Notify 2505operator in order to operate correctly. 2506 2507Implemented support to allow Package objects to be passed as method 2508arguments to the external AcpiEvaluateObject interface. Previously, this 2509would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2510implemented since there were no reserved control methods that required it 2511until recently. 2512 2513Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2514contained invalid non-zero values in reserved fields could cause later 2515failures because these fields have meaning in later revisions of the FADT. 2516For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2517are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2518 2519Fixed a problem where the Global Lock handle was not properly updated if a 2520thread that acquired the Global Lock via executing AML code then attempted 2521to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2522Liu. 2523 2524Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2525could be corrupted if the interrupt being removed was at the head of the 2526list. Reported by Linn Crosetto. 2527 2528Example Code and Data Size: These are the sizes for the OS-independent 2529acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2530debug version of the code includes the debug output trace mechanism and has 2531a much larger code and data size. 2532 2533 Previous Release: 2534 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2535 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2536 Current Release: 2537 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2538 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2539 2540---------------------------------------- 254120 March 2007. Summary of changes for version 20070320: 2542 25431) ACPI CA Core Subsystem: 2544 2545Implemented a change to the order of interpretation and evaluation of AML 2546operand objects within the AML interpreter. The interpreter now evaluates 2547operands in the order that they appear in the AML stream (and the 2548corresponding ASL code), instead of in the reverse order (after the entire 2549operand list has been parsed). The previous behavior caused several subtle 2550incompatibilities with the Microsoft AML interpreter as well as being 2551somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2552 2553Implemented a change to the ACPI Global Lock support. All interfaces to the 2554global lock now allow the same thread to acquire the lock multiple times. 2555This affects the AcpiAcquireGlobalLock external interface to the global lock 2556as well as the internal use of the global lock to support AML fields -- a 2557control method that is holding the global lock can now simultaneously access 2558AML fields that require global lock protection. Previously, in both cases, 2559this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2560AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2561Controller. There is no change to the behavior of the AML Acquire operator, 2562as this can already be used to acquire a mutex multiple times by the same 2563thread. BZ 8066. With assistance from Alexey Starikovskiy. 2564 2565Fixed a problem where invalid objects could be referenced in the AML 2566Interpreter after error conditions. During operand evaluation, ensure that 2567the internal "Return Object" field is cleared on error and only valid 2568pointers are stored there. Caused occasional access to deleted objects that 2569resulted in "large reference count" warning messages. Valery Podrezov. 2570 2571Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2572deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2573Podrezov. 2574 2575Fixed an internal problem with the handling of result objects on the 2576interpreter result stack. BZ 7872. Valery Podrezov. 2577 2578Removed obsolete code that handled the case where AML_NAME_OP is the target 2579of a reference (Reference.Opcode). This code was no longer necessary. BZ 25807874. Valery Podrezov. 2581 2582Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2583remnant from the previously discontinued 16-bit support. 2584 2585Example Code and Data Size: These are the sizes for the OS-independent 2586acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2587debug version of the code includes the debug output trace mechanism and has 2588a much larger code and data size. 2589 2590 Previous Release: 2591 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2592 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2593 Current Release: 2594 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2595 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2596 2597---------------------------------------- 259826 January 2007. Summary of changes for version 20070126: 2599 26001) ACPI CA Core Subsystem: 2601 2602Added the 2007 copyright to all module headers and signons. This affects 2603virtually every file in the ACPICA core subsystem, the iASL compiler, and 2604the utilities. 2605 2606Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2607during a table load. A bad pointer was passed in the case where the DSDT is 2608overridden, causing a fault in this case. 2609 2610Example Code and Data Size: These are the sizes for the OS-independent 2611acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2612debug version of the code includes the debug output trace mechanism and has 2613a much larger code and data size. 2614 2615 Previous Release: 2616 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2617 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2618 Current Release: 2619 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2620 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2621 2622---------------------------------------- 262315 December 2006. Summary of changes for version 20061215: 2624 26251) ACPI CA Core Subsystem: 2626 2627Support for 16-bit ACPICA has been completely removed since it is no longer 2628necessary and it clutters the code. All 16-bit macros, types, and 2629conditional compiles have been removed, cleaning up and simplifying the code 2630across the entire subsystem. DOS support is no longer needed since the 2631bootable Linux firmware kit is now available. 2632 2633The handler for the Global Lock is now removed during AcpiTerminate to 2634enable a clean subsystem restart, via the implementation of the 2635AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2636HP) 2637 2638Implemented enhancements to the multithreading support within the debugger 2639to enable improved multithreading debugging and evaluation of the subsystem. 2640(Valery Podrezov) 2641 2642Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2643memory used during the execution, as well as the maximum memory consumed by 2644each of the various object types. (Valery Podrezov) 2645 2646Example Code and Data Size: These are the sizes for the OS-independent 2647acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2648debug version of the code includes the debug output trace mechanism and has 2649a much larger code and data size. 2650 2651 Previous Release: 2652 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2653 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2654 Current Release: 2655 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2656 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2657 2658 26592) iASL Compiler/Disassembler and Tools: 2660 2661AcpiExec: Implemented a new option (-m) to display full memory use 2662statistics upon subsystem/program termination. (Valery Podrezov) 2663 2664---------------------------------------- 266509 November 2006. Summary of changes for version 20061109: 2666 26671) ACPI CA Core Subsystem: 2668 2669Optimized the Load ASL operator in the case where the source operand is an 2670operation region. Simply map the operation region memory, instead of 2671performing a bytewise read. (Region must be of type SystemMemory, see 2672below.) 2673 2674Fixed the Load ASL operator for the case where the source operand is a 2675region field. A buffer object is also allowed as the source operand. BZ 480 2676 2677Fixed a problem where the Load ASL operator allowed the source operand to be 2678an operation region of any type. It is now restricted to regions of type 2679SystemMemory, as per the ACPI specification. BZ 481 2680 2681Additional cleanup and optimizations for the new Table Manager code. 2682 2683AcpiEnable will now fail if all of the required ACPI tables are not loaded 2684(FADT, FACS, DSDT). BZ 477 2685 2686Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2687header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2688manually optimized to be aligned and will not work if it is byte-packed. 2689 2690Example Code and Data Size: These are the sizes for the OS-independent 2691acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2692debug version of the code includes the debug output trace mechanism and has 2693a much larger code and data size. 2694 2695 Previous Release: 2696 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2697 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2698 Current Release: 2699 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2700 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2701 2702 27032) iASL Compiler/Disassembler and Tools: 2704 2705Fixed a problem where the presence of the _OSI predefined control method 2706within complex expressions could cause an internal compiler error. 2707 2708AcpiExec: Implemented full region support for multiple address spaces. 2709SpaceId is now part of the REGION object. BZ 429 2710 2711---------------------------------------- 271211 October 2006. Summary of changes for version 20061011: 2713 27141) ACPI CA Core Subsystem: 2715 2716Completed an AML interpreter performance enhancement for control method 2717execution. Previously a 2-pass parse/execution, control methods are now 2718completely parsed and executed in a single pass. This improves overall 2719interpreter performance by ~25%, reduces code size, and reduces CPU stack 2720use. (Valery Podrezov + interpreter changes in version 20051202 that 2721eliminated namespace loading during the pass one parse.) 2722 2723Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2724match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2725obtained and also checked for an ID match. 2726 2727Implemented additional support for the PCI _ADR execution: upsearch until a 2728device scope is found before executing _ADR. This allows PCI_Config 2729operation regions to be declared locally within control methods underneath 2730PCI device objects. 2731 2732Fixed a problem with a possible race condition between threads executing 2733AcpiWalkNamespace and the AML interpreter. This condition was removed by 2734modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2735entries created during any concurrent control method execution. An 2736additional namespace race condition is known to exist between 2737AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2738investigation. 2739 2740Restructured the AML ParseLoop function, breaking it into several 2741subfunctions in order to reduce CPU stack use and improve maintainability. 2742(Mikhail Kouzmich) 2743 2744AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2745of prefix handle and pathname. BZ 478 2746 2747Example Code and Data Size: These are the sizes for the OS-independent 2748acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2749debug version of the code includes the debug output trace mechanism and has 2750a much larger code and data size. 2751 2752 Previous Release: 2753 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2754 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2755 Current Release: 2756 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2757 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2758 27592) iASL Compiler/Disassembler and Tools: 2760 2761Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2762to restore original behavior. 2763 2764---------------------------------------- 276527 September 2006. Summary of changes for version 20060927: 2766 27671) ACPI CA Core Subsystem: 2768 2769Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2770These functions now use a spinlock for mutual exclusion and the interrupt 2771level indication flag is not needed. 2772 2773Fixed a problem with the Global Lock where the lock could appear to be 2774obtained before it is actually obtained. The global lock semaphore was 2775inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2776Suietov. 2777 2778Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2779a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2780 2781Example Code and Data Size: These are the sizes for the OS-independent 2782acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2783debug version of the code includes the debug output trace mechanism and has 2784a much larger code and data size. 2785 2786 Previous Release: 2787 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2788 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2789 Current Release: 2790 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2791 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2792 2793 27942) iASL Compiler/Disassembler and Tools: 2795 2796Fixed a compilation problem with the pre-defined Resource Descriptor field 2797names where an "object does not exist" error could be incorrectly generated 2798if the parent ResourceTemplate pathname places the template within a 2799different namespace scope than the current scope. (BZ 7212) 2800 2801Fixed a problem where the compiler could hang after syntax errors detected 2802in an ElseIf construct. (BZ 453) 2803 2804Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2805operator. An incorrect output filename was produced when this parameter was 2806a null string (""). Now, the original input filename is used as the AML 2807output filename, with an ".aml" extension. 2808 2809Implemented a generic batch command mode for the AcpiExec utility (execute 2810any AML debugger command) (Valery Podrezov). 2811 2812---------------------------------------- 281312 September 2006. Summary of changes for version 20060912: 2814 28151) ACPI CA Core Subsystem: 2816 2817Enhanced the implementation of the "serialized mode" of the interpreter 2818(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2819specified, instead of creating a serialization semaphore per control method, 2820the interpreter lock is simply no longer released before a blocking 2821operation during control method execution. This effectively makes the AML 2822Interpreter single-threaded. The overhead of a semaphore per-method is 2823eliminated. 2824 2825Fixed a regression where an error was no longer emitted if a control method 2826attempts to create 2 objects of the same name. This once again returns 2827AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2828will dynamically serialize the control method to possible prevent future 2829errors. (BZ 440) 2830 2831Integrated a fix for a problem with PCI Express HID detection in the PCI 2832Config Space setup procedure. (BZ 7145) 2833 2834Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2835AcpiHwInitialize function - the FADT registers are now validated when the 2836table is loaded. 2837 2838Added two new warnings during FADT verification - 1) if the FADT is larger 2839than the largest known FADT version, and 2) if there is a mismatch between a 284032-bit block address and the 64-bit X counterpart (when both are non-zero.) 2841 2842Example Code and Data Size: These are the sizes for the OS-independent 2843acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2844debug version of the code includes the debug output trace mechanism and has 2845a much larger code and data size. 2846 2847 Previous Release: 2848 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2849 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2850 Current Release: 2851 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2852 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2853 2854 28552) iASL Compiler/Disassembler and Tools: 2856 2857Fixed a problem with the implementation of the Switch() operator where the 2858temporary variable was declared too close to the actual Switch, instead of 2859at method level. This could cause a problem if the Switch() operator is 2860within a while loop, causing an error on the second iteration. (BZ 460) 2861 2862Disassembler - fix for error emitted for unknown type for target of scope 2863operator. Now, ignore it and continue. 2864 2865Disassembly of an FADT now verifies the input FADT and reports any errors 2866found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2867 2868Disassembly of raw data buffers with byte initialization data now prefixes 2869each output line with the current buffer offset. 2870 2871Disassembly of ASF! table now includes all variable-length data fields at 2872the end of some of the subtables. 2873 2874The disassembler now emits a comment if a buffer appears to be a 2875ResourceTemplate, but cannot be disassembled as such because the EndTag does 2876not appear at the very end of the buffer. 2877 2878AcpiExec - Added the "-t" command line option to enable the serialized mode 2879of the AML interpreter. 2880 2881---------------------------------------- 288231 August 2006. Summary of changes for version 20060831: 2883 28841) ACPI CA Core Subsystem: 2885 2886Miscellaneous fixes for the Table Manager: 2887- Correctly initialize internal common FADT for all 64-bit "X" fields 2888- Fixed a couple table mapping issues during table load 2889- Fixed a couple alignment issues for IA64 2890- Initialize input array to zero in AcpiInitializeTables 2891- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2892AcpiGetTableByIndex 2893 2894Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2895immediately disabled to prevent the waking GPE from firing again and to 2896prevent other wake GPEs from interrupting the wake process. 2897 2898Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2899be used for debugging systems with a large number of ACPI interrupts. 2900 2901Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2902both the ACPICA headers and the disassembler. 2903 2904Example Code and Data Size: These are the sizes for the OS-independent 2905acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2906debug version of the code includes the debug output trace mechanism and has 2907a much larger code and data size. 2908 2909 Previous Release: 2910 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2911 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2912 Current Release: 2913 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2914 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2915 2916 29172) iASL Compiler/Disassembler and Tools: 2918 2919Disassembler support for the DMAR ACPI table. 2920 2921---------------------------------------- 292223 August 2006. Summary of changes for version 20060823: 2923 29241) ACPI CA Core Subsystem: 2925 2926The Table Manager component has been completely redesigned and 2927reimplemented. The new design is much simpler, and reduces the overall code 2928and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2929now possible to obtain the ACPI tables very early during kernel 2930initialization, even before dynamic memory management is initialized. 2931(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2932 2933Obsolete ACPICA interfaces: 2934 2935- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2936time). 2937- AcpiLoadTable: Not needed. 2938- AcpiUnloadTable: Not needed. 2939 2940New ACPICA interfaces: 2941 2942- AcpiInitializeTables: Must be called before the table manager can be used. 2943- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2944allocated memory after it becomes available. 2945- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2946in the RSDT/XSDT. 2947 2948Other ACPICA changes: 2949 2950- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2951AcpiOsUnmapMemory to free this mapping. 2952- AcpiGetTable returns the actual mapped table. The mapping is managed 2953internally and must not be deleted by the caller. Use of this interface 2954causes no additional dynamic memory allocation. 2955- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2956it appeared to be unused. 2957- The interface to AcpiOsMapMemory has changed to be consistent with the 2958other allocation interfaces. 2959- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2960parameters. 2961- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2962bit platforms. Was previously 64 bits on all platforms. 2963- The interface to the ACPI Global Lock acquire/release macros have changed 2964slightly since ACPICA no longer keeps a local copy of the FACS with a 2965constructed pointer to the actual global lock. 2966 2967Porting to the new table manager: 2968 2969- AcpiInitializeTables: Must be called once, and can be called anytime 2970during the OS initialization process. It allows the host to specify an area 2971of memory to be used to store the internal version of the RSDT/XSDT (root 2972table). This allows the host to access ACPI tables before memory management 2973is initialized and running. 2974- AcpiReallocateRootTable: Can be called after memory management is running 2975to copy the root table to a dynamically allocated array, freeing up the 2976scratch memory specified in the call to AcpiInitializeTables. 2977- AcpiSubsystemInitialize: This existing interface is independent of the 2978Table Manager, and does not have to be called before the Table Manager can 2979be used, it only must be called before the rest of ACPICA can be used. 2980- ACPI Tables: Some changes have been made to the names and structure of the 2981actbl.h and actbl1.h header files and may require changes to existing code. 2982For example, bitfields have been completely removed because of their lack of 2983portability across C compilers. 2984- Update interfaces to the Global Lock acquire/release macros if local 2985versions are used. (see acwin.h) 2986 2987Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2988 2989New files: tbfind.c 2990 2991Example Code and Data Size: These are the sizes for the OS-independent 2992acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2993debug version of the code includes the debug output trace mechanism and has 2994a much larger code and data size. 2995 2996 Previous Release: 2997 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2998 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2999 Current Release: 3000 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 3001 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 3002 3003 30042) iASL Compiler/Disassembler and Tools: 3005 3006No changes for this release. 3007 3008---------------------------------------- 300921 July 2006. Summary of changes for version 20060721: 3010 30111) ACPI CA Core Subsystem: 3012 3013The full source code for the ASL test suite used to validate the iASL 3014compiler and the ACPICA core subsystem is being released with the ACPICA 3015source for the first time. The source is contained in a separate package and 3016consists of over 1100 files that exercise all ASL/AML operators. The package 3017should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 3018Suietov) 3019 3020Completed a new design and implementation for support of the ACPI Global 3021Lock. On the OS side, the global lock is now treated as a standard AML 3022mutex. Previously, multiple OS threads could "acquire" the global lock 3023simultaneously. However, this could cause the BIOS to be starved out of the 3024lock - especially in cases such as the Embedded Controller driver where 3025there is a tight coupling between the OS and the BIOS. 3026 3027Implemented an optimization for the ACPI Global Lock interrupt mechanism. 3028The Global Lock interrupt handler no longer queues the execution of a 3029separate thread to signal the global lock semaphore. Instead, the semaphore 3030is signaled directly from the interrupt handler. 3031 3032Implemented support within the AML interpreter for package objects that 3033contain a larger AML length (package list length) than the package element 3034count. In this case, the length of the package is truncated to match the 3035package element count. Some BIOS code apparently modifies the package length 3036on the fly, and this change supports this behavior. Provides compatibility 3037with the MS AML interpreter. (With assistance from Fiodor Suietov) 3038 3039Implemented a temporary fix for the BankValue parameter of a Bank Field to 3040support all constant values, now including the Zero and One opcodes. 3041Evaluation of this parameter must eventually be converted to a full TermArg 3042evaluation. A not-implemented error is now returned (temporarily) for non- 3043constant values for this parameter. 3044 3045Fixed problem reports (Fiodor Suietov) integrated: 3046- Fix for premature object deletion after CopyObject on Operation Region (BZ 3047350) 3048 3049Example Code and Data Size: These are the sizes for the OS-independent 3050acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3051debug version of the code includes the debug output trace mechanism and has 3052a much larger code and data size. 3053 3054 Previous Release: 3055 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 3056 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 3057 Current Release: 3058 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3059 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3060 3061 30622) iASL Compiler/Disassembler and Tools: 3063 3064No changes for this release. 3065 3066---------------------------------------- 306707 July 2006. Summary of changes for version 20060707: 3068 30691) ACPI CA Core Subsystem: 3070 3071Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3072that do not allow the initialization of address pointers within packed 3073structures - even though the hardware itself may support misaligned 3074transfers. Some of the debug data structures are packed by default to 3075minimize size. 3076 3077Added an error message for the case where AcpiOsGetThreadId() returns zero. 3078A non-zero value is required by the core ACPICA code to ensure the proper 3079operation of AML mutexes and recursive control methods. 3080 3081The DSDT is now the only ACPI table that determines whether the AML 3082interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3083the hooks for per-table 32/64 switching have been removed from the code. A 3084clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3085 3086Fixed a possible leak of an OwnerID in the error path of 3087AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3088deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3089when using the AcpiTbDeleteTablesByType interface (with assistance from 3090Lance Ortiz.) 3091 3092Fixed a problem with Serialized control methods where the semaphore 3093associated with the method could be over-signaled after multiple method 3094invocations. 3095 3096Fixed two issues with the locking of the internal namespace data structure. 3097Both the Unload() operator and AcpiUnloadTable interface now lock the 3098namespace during the namespace deletion associated with the table unload 3099(with assistance from Linn Crosetto.) 3100 3101Fixed problem reports (Valery Podrezov) integrated: 3102- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3103 3104Fixed problem reports (Fiodor Suietov) integrated: 3105- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3106- On Address Space handler deletion, needless deactivation call (BZ 374) 3107- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3108- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3109(BZ 376) 3110- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3111- Minimum Length of RSDT should be validated (BZ 379) 3112- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3113Handler (BZ (380) 3114- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3115(BZ 381) 3116 3117Example Code and Data Size: These are the sizes for the OS-independent 3118acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3119debug version of the code includes the debug output trace mechanism and has 3120a much larger code and data size. 3121 3122 Previous Release: 3123 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3124 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3125 Current Release: 3126 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3127 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3128 3129 31302) iASL Compiler/Disassembler and Tools: 3131 3132Fixed problem reports: 3133Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3134436) 3135 3136---------------------------------------- 313723 June 2006. Summary of changes for version 20060623: 3138 31391) ACPI CA Core Subsystem: 3140 3141Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3142allows the type to be customized to the host OS for improved efficiency 3143(since a spinlock is usually a very small object.) 3144 3145Implemented support for "ignored" bits in the ACPI registers. According to 3146the ACPI specification, these bits should be preserved when writing the 3147registers via a read/modify/write cycle. There are 3 bits preserved in this 3148manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3149 3150Implemented the initial deployment of new OSL mutex interfaces. Since some 3151host operating systems have separate mutex and semaphore objects, this 3152feature was requested. The base code now uses mutexes (and the new mutex 3153interfaces) wherever a binary semaphore was used previously. However, for 3154the current release, the mutex interfaces are defined as macros to map them 3155to the existing semaphore interfaces. Therefore, no OSL changes are required 3156at this time. (See acpiosxf.h) 3157 3158Fixed several problems with the support for the control method SyncLevel 3159parameter. The SyncLevel now works according to the ACPI specification and 3160in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3161is a property of the executing thread. Mutual exclusion for control methods 3162is now implemented with a mutex instead of a semaphore. 3163 3164Fixed three instances of the use of the C shift operator in the bitfield 3165support code (exfldio.c) to avoid the use of a shift value larger than the 3166target data width. The behavior of C compilers is undefined in this case and 3167can cause unpredictable results, and therefore the case must be detected and 3168avoided. (Fiodor Suietov) 3169 3170Added an info message whenever an SSDT or OEM table is loaded dynamically 3171via the Load() or LoadTable() ASL operators. This should improve debugging 3172capability since it will show exactly what tables have been loaded (beyond 3173the tables present in the RSDT/XSDT.) 3174 3175Example Code and Data Size: These are the sizes for the OS-independent 3176acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3177debug version of the code includes the debug output trace mechanism and has 3178a much larger code and data size. 3179 3180 Previous Release: 3181 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3182 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3183 Current Release: 3184 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3185 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3186 3187 31882) iASL Compiler/Disassembler and Tools: 3189 3190No changes for this release. 3191 3192---------------------------------------- 319308 June 2006. Summary of changes for version 20060608: 3194 31951) ACPI CA Core Subsystem: 3196 3197Converted the locking mutex used for the ACPI hardware to a spinlock. This 3198change should eliminate all problems caused by attempting to acquire a 3199semaphore at interrupt level, and it means that all ACPICA external 3200interfaces that directly access the ACPI hardware can be safely called from 3201interrupt level. OSL code that implements the semaphore interfaces should be 3202able to eliminate any workarounds for being called at interrupt level. 3203 3204Fixed a regression introduced in 20060526 where the ACPI device 3205initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3206did not have an optional _INI method. 3207 3208Fixed an IndexField issue where a write to the Data Register should be 3209limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3210Fiodor Suietov) 3211 3212Fixed problem reports (Valery Podrezov) integrated: 3213- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3214 3215Fixed problem reports (Fiodor Suietov) integrated: 3216- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3217 3218Removed four global mutexes that were obsolete and were no longer being 3219used. 3220 3221Example Code and Data Size: These are the sizes for the OS-independent 3222acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3223debug version of the code includes the debug output trace mechanism and has 3224a much larger code and data size. 3225 3226 Previous Release: 3227 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3228 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3229 Current Release: 3230 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3231 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3232 3233 32342) iASL Compiler/Disassembler and Tools: 3235 3236Fixed a fault when using -g option (get tables from registry) on Windows 3237machines. 3238 3239Fixed problem reports integrated: 3240- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3241- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3242Suietov) 3243- Global table revision override (-r) is ignored (BZ 413) 3244 3245---------------------------------------- 324626 May 2006. Summary of changes for version 20060526: 3247 32481) ACPI CA Core Subsystem: 3249 3250Restructured, flattened, and simplified the internal interfaces for 3251namespace object evaluation - resulting in smaller code, less CPU stack use, 3252and fewer interfaces. (With assistance from Mikhail Kouzmich) 3253 3254Fixed a problem with the CopyObject operator where the first parameter was 3255not typed correctly for the parser, interpreter, compiler, and disassembler. 3256Caused various errors and unexpected behavior. 3257 3258Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3259produced incorrect results with some C compilers. Since the behavior of C 3260compilers when the shift value is larger than the datatype width is 3261apparently not well defined, the interpreter now detects this condition and 3262simply returns zero as expected in all such cases. (BZ 395) 3263 3264Fixed problem reports (Valery Podrezov) integrated: 3265- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3266- Allow interpreter to handle nested method declarations (BZ 5361) 3267 3268Fixed problem reports (Fiodor Suietov) integrated: 3269- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3270- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3271- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3272- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3273- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3274- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3275- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3276- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3277- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3278- Status of the Global Initialization Handler call not used (BZ 366) 3279- Incorrect object parameter to Global Initialization Handler (BZ 367) 3280 3281Example Code and Data Size: These are the sizes for the OS-independent 3282acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3283debug version of the code includes the debug output trace mechanism and has 3284a much larger code and data size. 3285 3286 Previous Release: 3287 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3288 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3289 Current Release: 3290 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3291 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3292 3293 32942) iASL Compiler/Disassembler and Tools: 3295 3296Modified the parser to allow the names IO, DMA, and IRQ to be used as 3297namespace identifiers with no collision with existing resource descriptor 3298macro names. This provides compatibility with other ASL compilers and is 3299most useful for disassembly/recompilation of existing tables without parse 3300errors. (With assistance from Thomas Renninger) 3301 3302Disassembler: fixed an incorrect disassembly problem with the 3303DataTableRegion and CopyObject operators. Fixed a possible fault during 3304disassembly of some Alias operators. 3305 3306---------------------------------------- 330712 May 2006. Summary of changes for version 20060512: 3308 33091) ACPI CA Core Subsystem: 3310 3311Replaced the AcpiOsQueueForExecution interface with a new interface named 3312AcpiOsExecute. The major difference is that the new interface does not have 3313a Priority parameter, this appeared to be useless and has been replaced by a 3314Type parameter. The Type tells the host what type of execution is being 3315requested, such as global lock handler, notify handler, GPE handler, etc. 3316This allows the host to queue and execute the request as appropriate for the 3317request type, possibly using different work queues and different priorities 3318for the various request types. This enables fixes for multithreading 3319deadlock problems such as BZ #5534, and will require changes to all existing 3320OS interface layers. (Alexey Starikovskiy and Bob Moore) 3321 3322Fixed a possible memory leak associated with the support for the so-called 3323"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3324Suietov) 3325 3326Fixed a problem with the Load() operator where a table load from an 3327operation region could overwrite an internal table buffer by up to 7 bytes 3328and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3329 3330Example Code and Data Size: These are the sizes for the OS-independent 3331acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3332debug version of the code includes the debug output trace mechanism and has 3333a much larger code and data size. 3334 3335 Previous Release: 3336 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3337 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3338 Current Release: 3339 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3340 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3341 3342 3343 33442) iASL Compiler/Disassembler and Tools: 3345 3346Disassembler: Implemented support to cross reference the internal namespace 3347and automatically generate ASL External() statements for symbols not defined 3348within the current table being disassembled. This will simplify the 3349disassembly and recompilation of interdependent tables such as SSDTs since 3350these statements will no longer have to be added manually. 3351 3352Disassembler: Implemented experimental support to automatically detect 3353invocations of external control methods and generate appropriate External() 3354statements. This is problematic because the AML cannot be correctly parsed 3355until the number of arguments for each control method is known. Currently, 3356standalone method invocations and invocations as the source operand of a 3357Store() statement are supported. 3358 3359Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3360LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3361LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3362more readable and likely closer to the original ASL source. 3363 3364---------------------------------------- 336521 April 2006. Summary of changes for version 20060421: 3366 33671) ACPI CA Core Subsystem: 3368 3369Removed a device initialization optimization introduced in 20051216 where 3370the _STA method was not run unless an _INI was also present for the same 3371device. This optimization could cause problems because it could allow _INI 3372methods to be run within a not-present device subtree. (If a not-present 3373device had no _INI, _STA would not be run, the not-present status would not 3374be discovered, and the children of the device would be incorrectly 3375traversed.) 3376 3377Implemented a new _STA optimization where namespace subtrees that do not 3378contain _INI are identified and ignored during device initialization. 3379Selectively running _STA can significantly improve boot time on large 3380machines (with assistance from Len Brown.) 3381 3382Implemented support for the device initialization case where the returned 3383_STA flags indicate a device not-present but functioning. In this case, _INI 3384is not run, but the device children are examined for presence, as per the 3385ACPI specification. 3386 3387Implemented an additional change to the IndexField support in order to 3388conform to MS behavior. The value written to the Index Register is not 3389simply a byte offset, it is a byte offset in units of the access width of 3390the parent Index Field. (Fiodor Suietov) 3391 3392Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3393interface is called during the creation of all AML operation regions, and 3394allows the host OS to exert control over what addresses it will allow the 3395AML code to access. Operation Regions whose addresses are disallowed will 3396cause a runtime exception when they are actually accessed (will not affect 3397or abort table loading.) See oswinxf or osunixxf for an example 3398implementation. 3399 3400Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3401interface allows the host OS to match the various "optional" 3402interface/behavior strings for the _OSI predefined control method as 3403appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3404for an example implementation. 3405 3406Restructured and corrected various problems in the exception handling code 3407paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3408(with assistance from Takayoshi Kochi.) 3409 3410Modified the Linux source converter to ignore quoted string literals while 3411converting identifiers from mixed to lower case. This will correct problems 3412with the disassembler and other areas where such strings must not be 3413modified. 3414 3415The ACPI_FUNCTION_* macros no longer require quotes around the function 3416name. This allows the Linux source converter to convert the names, now that 3417the converter ignores quoted strings. 3418 3419Example Code and Data Size: These are the sizes for the OS-independent 3420acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3421debug version of the code includes the debug output trace mechanism and has 3422a much larger code and data size. 3423 3424 Previous Release: 3425 3426 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3427 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3428 Current Release: 3429 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3430 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3431 3432 34332) iASL Compiler/Disassembler and Tools: 3434 3435Implemented 3 new warnings for iASL, and implemented multiple warning levels 3436(w2 flag). 3437 34381) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3439WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3440check for the possible timeout, a warning is issued. 3441 34422) Useless operators: If an ASL operator does not specify an optional target 3443operand and it also does not use the function return value from the 3444operator, a warning is issued since the operator effectively does nothing. 3445 34463) Unreferenced objects: If a namespace object is created, but never 3447referenced, a warning is issued. This is a warning level 2 since there are 3448cases where this is ok, such as when a secondary table is loaded that uses 3449the unreferenced objects. Even so, care is taken to only flag objects that 3450don't look like they will ever be used. For example, the reserved methods 3451(starting with an underscore) are usually not referenced because it is 3452expected that the OS will invoke them. 3453 3454---------------------------------------- 345531 March 2006. Summary of changes for version 20060331: 3456 34571) ACPI CA Core Subsystem: 3458 3459Implemented header file support for the following additional ACPI tables: 3460ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3461all current and known ACPI tables are now defined in the ACPICA headers and 3462are available for use by device drivers and other software. 3463 3464Implemented support to allow tables that contain ACPI names with invalid 3465characters to be loaded. Previously, this would cause the table load to 3466fail, but since there are several known cases of such tables on existing 3467machines, this change was made to enable ACPI support for them. Also, this 3468matches the behavior of the Microsoft ACPI implementation. 3469 3470Fixed a couple regressions introduced during the memory optimization in the 347120060317 release. The namespace node definition required additional 3472reorganization and an internal datatype that had been changed to 8-bit was 3473restored to 32-bit. (Valery Podrezov) 3474 3475Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3476could be passed through to AcpiOsReleaseObject which is unexpected. Such 3477null pointers are now trapped and ignored, matching the behavior of the 3478previous implementation before the deployment of AcpiOsReleaseObject. 3479(Valery Podrezov, Fiodor Suietov) 3480 3481Fixed a memory mapping leak during the deletion of a SystemMemory operation 3482region where a cached memory mapping was not deleted. This became a 3483noticeable problem for operation regions that are defined within frequently 3484used control methods. (Dana Meyers) 3485 3486Reorganized the ACPI table header files into two main files: one for the 3487ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3488ACPI tables that are consumed by the drivers and other software. The various 3489FADT definitions were merged into one common section and three different 3490tables (ACPI 1.0, 1.0+, and 2.0) 3491 3492Example Code and Data Size: These are the sizes for the OS-independent 3493acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3494debug version of the code includes the debug output trace mechanism and has 3495a much larger code and data size. 3496 3497 Previous Release: 3498 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3499 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3500 Current Release: 3501 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3502 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3503 3504 35052) iASL Compiler/Disassembler and Tools: 3506 3507Disassembler: Implemented support to decode and format all non-AML ACPI 3508tables (tables other than DSDTs and SSDTs.) This includes the new tables 3509added to the ACPICA headers, therefore all current and known ACPI tables are 3510supported. 3511 3512Disassembler: The change to allow ACPI names with invalid characters also 3513enables the disassembly of such tables. Invalid characters within names are 3514changed to '*' to make the name printable; the iASL compiler will still 3515generate an error for such names, however, since this is an invalid ACPI 3516character. 3517 3518Implemented an option for AcpiXtract (-a) to extract all tables found in the 3519input file. The default invocation extracts only the DSDTs and SSDTs. 3520 3521Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3522makefile for the AcpiXtract utility. 3523 3524---------------------------------------- 352517 March 2006. Summary of changes for version 20060317: 3526 35271) ACPI CA Core Subsystem: 3528 3529Implemented the use of a cache object for all internal namespace nodes. 3530Since there are about 1000 static nodes in a typical system, this will 3531decrease memory use for cache implementations that minimize per-allocation 3532overhead (such as a slab allocator.) 3533 3534Removed the reference count mechanism for internal namespace nodes, since it 3535was deemed unnecessary. This reduces the size of each namespace node by 3536about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3537and 32 bytes for the 64-bit case. 3538 3539Optimized several internal data structures to reduce object size on 64-bit 3540platforms by packing data within the 64-bit alignment. This includes the 3541frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3542instances corresponding to the namespace objects. 3543 3544Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3545and "Windows 2006". 3546 3547Split the allocation tracking mechanism out to a separate file, from 3548utalloc.c to uttrack.c. This mechanism appears to be only useful for 3549application-level code. Kernels may wish to not include uttrack.c in 3550distributions. 3551 3552Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3553code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3554macros.) 3555 3556Code and Data Size: These are the sizes for the acpica.lib produced by the 3557Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3558driver or OSPM code. The debug version of the code includes the debug output 3559trace mechanism and has a much larger code and data size. Note that these 3560values will vary depending on the efficiency of the compiler and the 3561compiler options used during generation. 3562 3563 Previous Release: 3564 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3565 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3566 Current Release: 3567 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3568 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3569 3570 35712) iASL Compiler/Disassembler and Tools: 3572 3573Implemented an ANSI C version of the acpixtract utility. This version will 3574automatically extract the DSDT and all SSDTs from the input acpidump text 3575file and dump the binary output to separate files. It can also display a 3576summary of the input file including the headers for each table found and 3577will extract any single ACPI table, with any signature. (See 3578source/tools/acpixtract) 3579 3580---------------------------------------- 358110 March 2006. Summary of changes for version 20060310: 3582 35831) ACPI CA Core Subsystem: 3584 3585Tagged all external interfaces to the subsystem with the new 3586ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3587kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3588macro. The default definition is NULL. 3589 3590Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3591This allows the host to define this as necessary to simplify kernel 3592integration. The default definition is ACPI_NATIVE_UINT. 3593 3594Fixed two interpreter problems related to error processing, the deletion of 3595objects, and placing invalid pointers onto the internal operator result 3596stack. BZ 6028, 6151 (Valery Podrezov) 3597 3598Increased the reference count threshold where a warning is emitted for large 3599reference counts in order to eliminate unnecessary warnings on systems with 3600large namespaces (especially 64-bit.) Increased the value from 0x400 to 36010x800. 3602 3603Due to universal disagreement as to the meaning of the 'c' in the calloc() 3604function, the ACPI_MEM_CALLOCATE macro has been renamed to 3605ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3606ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3607ACPI_FREE. 3608 3609Code and Data Size: These are the sizes for the acpica.lib produced by the 3610Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3611driver or OSPM code. The debug version of the code includes the debug output 3612trace mechanism and has a much larger code and data size. Note that these 3613values will vary depending on the efficiency of the compiler and the 3614compiler options used during generation. 3615 3616 Previous Release: 3617 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3618 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3619 Current Release: 3620 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3621 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3622 3623 36242) iASL Compiler/Disassembler: 3625 3626Disassembler: implemented support for symbolic resource descriptor 3627references. If a CreateXxxxField operator references a fixed offset within a 3628resource descriptor, a name is assigned to the descriptor and the offset is 3629translated to the appropriate resource tag and pathname. The addition of 3630this support brings the disassembled code very close to the original ASL 3631source code and helps eliminate run-time errors when the disassembled code 3632is modified (and recompiled) in such a way as to invalidate the original 3633fixed offsets. 3634 3635Implemented support for a Descriptor Name as the last parameter to the ASL 3636Register() macro. This parameter was inadvertently left out of the ACPI 3637specification, and will be added for ACPI 3.0b. 3638 3639Fixed a problem where the use of the "_OSI" string (versus the full path 3640"\_OSI") caused an internal compiler error. ("No back ptr to op") 3641 3642Fixed a problem with the error message that occurs when an invalid string is 3643used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3644The correct message is now displayed. 3645 3646---------------------------------------- 364717 February 2006. Summary of changes for version 20060217: 3648 36491) ACPI CA Core Subsystem: 3650 3651Implemented a change to the IndexField support to match the behavior of the 3652Microsoft AML interpreter. The value written to the Index register is now a 3653byte offset, no longer an index based upon the width of the Data register. 3654This should fix IndexField problems seen on some machines where the Data 3655register is not exactly one byte wide. The ACPI specification will be 3656clarified on this point. 3657 3658Fixed a problem where several resource descriptor types could overrun the 3659internal descriptor buffer due to size miscalculation: VendorShort, 3660VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3661affect all platforms. 3662 3663Fixed a problem where individual resource descriptors were misaligned within 3664the internal buffer, causing alignment faults on IA64 platforms. 3665 3666Code and Data Size: These are the sizes for the acpica.lib produced by the 3667Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3668driver or OSPM code. The debug version of the code includes the debug output 3669trace mechanism and has a much larger code and data size. Note that these 3670values will vary depending on the efficiency of the compiler and the 3671compiler options used during generation. 3672 3673 Previous Release: 3674 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3675 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3676 Current Release: 3677 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3678 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3679 3680 36812) iASL Compiler/Disassembler: 3682 3683Implemented support for new reserved names: _WDG and _WED are Microsoft 3684extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3685defined method (Throttling Depth Limit.) 3686 3687Fixed a problem where a zero-length VendorShort or VendorLong resource 3688descriptor was incorrectly emitted as a descriptor of length one. 3689 3690---------------------------------------- 369110 February 2006. Summary of changes for version 20060210: 3692 36931) ACPI CA Core Subsystem: 3694 3695Removed a couple of extraneous ACPI_ERROR messages that appeared during 3696normal execution. These became apparent after the conversion from 3697ACPI_DEBUG_PRINT. 3698 3699Fixed a problem where the CreateField operator could hang if the BitIndex or 3700NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3701 3702Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3703failed with an exception. This also fixes a couple of related RefOf and 3704DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3705 3706Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3707AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 37085480) 3709 3710Implemented a memory cleanup at the end of the execution of each iteration 3711of an AML While() loop, preventing the accumulation of outstanding objects. 3712(Valery Podrezov, BZ 5427) 3713 3714Eliminated a chunk of duplicate code in the object resolution code. (Valery 3715Podrezov, BZ 5336) 3716 3717Fixed several warnings during the 64-bit code generation. 3718 3719The AcpiSrc source code conversion tool now inserts one line of whitespace 3720after an if() statement that is followed immediately by a comment, improving 3721readability of the Linux code. 3722 3723Code and Data Size: The current and previous library sizes for the core 3724subsystem are shown below. These are the code and data sizes for the 3725acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3726values do not include any ACPI driver or OSPM code. The debug version of the 3727code includes the debug output trace mechanism and has a much larger code 3728and data size. Note that these values will vary depending on the efficiency 3729of the compiler and the compiler options used during generation. 3730 3731 Previous Release: 3732 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3733 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3734 Current Release: 3735 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3736 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3737 3738 37392) iASL Compiler/Disassembler: 3740 3741Fixed a problem with the disassembly of a BankField operator with a complex 3742expression for the BankValue parameter. 3743 3744---------------------------------------- 374527 January 2006. Summary of changes for version 20060127: 3746 37471) ACPI CA Core Subsystem: 3748 3749Implemented support in the Resource Manager to allow unresolved namestring 3750references within resource package objects for the _PRT method. This support 3751is in addition to the previously implemented unresolved reference support 3752within the AML parser. If the interpreter slack mode is enabled, these 3753unresolved references will be passed through to the caller as a NULL package 3754entry. 3755 3756Implemented and deployed new macros and functions for error and warning 3757messages across the subsystem. These macros are simpler and generate less 3758code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3759ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3760macros remain defined to allow ACPI drivers time to migrate to the new 3761macros. 3762 3763Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3764Acquire/Release Lock OSL interfaces. 3765 3766Fixed a problem where Alias ASL operators are sometimes not correctly 3767resolved, in both the interpreter and the iASL compiler. 3768 3769Fixed several problems with the implementation of the ConcatenateResTemplate 3770ASL operator. As per the ACPI specification, zero length buffers are now 3771treated as a single EndTag. One-length buffers always cause a fatal 3772exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3773cause a fatal exception. 3774 3775Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3776interface. (With assistance from Thomas Renninger) 3777 3778Code and Data Size: The current and previous library sizes for the core 3779subsystem are shown below. These are the code and data sizes for the 3780acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3781values do not include any ACPI driver or OSPM code. The debug version of the 3782code includes the debug output trace mechanism and has a much larger code 3783and data size. Note that these values will vary depending on the efficiency 3784of the compiler and the compiler options used during generation. 3785 3786 Previous Release: 3787 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3788 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3789 Current Release: 3790 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3791 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3792 3793 37942) iASL Compiler/Disassembler: 3795 3796Fixed an internal error that was generated for any forward references to ASL 3797Alias objects. 3798 3799---------------------------------------- 380013 January 2006. Summary of changes for version 20060113: 3801 38021) ACPI CA Core Subsystem: 3803 3804Added 2006 copyright to all module headers and signons. This affects 3805virtually every file in the ACPICA core subsystem, iASL compiler, and the 3806utilities. 3807 3808Enhanced the ACPICA error reporting in order to simplify user migration to 3809the non-debug version of ACPICA. Replaced all instances of the 3810ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3811levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3812respectively. This preserves all error and warning messages in the non-debug 3813version of the ACPICA code (this has been referred to as the "debug lite" 3814option.) Over 200 cases were converted to create a total of over 380 3815error/warning messages across the ACPICA code. This increases the code and 3816data size of the default non-debug version of the code somewhat (about 13K), 3817but all error/warning reporting may be disabled if desired (and code 3818eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3819configuration option. The size of the debug version of ACPICA remains about 3820the same. 3821 3822Fixed a memory leak within the AML Debugger "Set" command. One object was 3823not properly deleted for every successful invocation of the command. 3824 3825Code and Data Size: The current and previous library sizes for the core 3826subsystem are shown below. These are the code and data sizes for the 3827acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3828values do not include any ACPI driver or OSPM code. The debug version of the 3829code includes the debug output trace mechanism and has a much larger code 3830and data size. Note that these values will vary depending on the efficiency 3831of the compiler and the compiler options used during generation. 3832 3833 Previous Release: 3834 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3835 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3836 Current Release: 3837 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3838 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3839 3840 38412) iASL Compiler/Disassembler: 3842 3843The compiler now officially supports the ACPI 3.0a specification that was 3844released on December 30, 2005. (Specification is available at www.acpi.info) 3845 3846---------------------------------------- 384716 December 2005. Summary of changes for version 20051216: 3848 38491) ACPI CA Core Subsystem: 3850 3851Implemented optional support to allow unresolved names within ASL Package 3852objects. A null object is inserted in the package when a named reference 3853cannot be located in the current namespace. Enabled via the interpreter 3854slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3855that contain such code. 3856 3857Implemented an optimization to the initialization sequence that can improve 3858boot time. During ACPI device initialization, the _STA method is now run if 3859and only if the _INI method exists. The _STA method is used to determine if 3860the device is present; An _INI can only be run if _STA returns present, but 3861it is a waste of time to run the _STA method if the _INI does not exist. 3862(Prototype and assistance from Dong Wei) 3863 3864Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3865available in the current compiler. Otherwise, the default (void *) cast is 3866used as before. 3867 3868Fixed some possible memory leaks found within the execution path of the 3869Break, Continue, If, and CreateField operators. (Valery Podrezov) 3870 3871Fixed a problem introduced in the 20051202 release where an exception is 3872generated during method execution if a control method attempts to declare 3873another method. 3874 3875Moved resource descriptor string constants that are used by both the AML 3876disassembler and AML debugger to the common utilities directory so that 3877these components are independent. 3878 3879Implemented support in the AcpiExec utility (-e switch) to globally ignore 3880exceptions during control method execution (method is not aborted.) 3881 3882Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3883generation. 3884 3885Code and Data Size: The current and previous library sizes for the core 3886subsystem are shown below. These are the code and data sizes for the 3887acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3888values do not include any ACPI driver or OSPM code. The debug version of the 3889code includes the debug output trace mechanism and has a much larger code 3890and data size. Note that these values will vary depending on the efficiency 3891of the compiler and the compiler options used during generation. 3892 3893 Previous Release: 3894 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3895 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3896 Current Release: 3897 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3898 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3899 3900 39012) iASL Compiler/Disassembler: 3902 3903Fixed a problem where a CPU stack overflow fault could occur if a recursive 3904method call was made from within a Return statement. 3905 3906---------------------------------------- 390702 December 2005. Summary of changes for version 20051202: 3908 39091) ACPI CA Core Subsystem: 3910 3911Modified the parsing of control methods to no longer create namespace 3912objects during the first pass of the parse. Objects are now created only 3913during the execute phase, at the moment the namespace creation operator is 3914encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3915should eliminate ALREADY_EXISTS exceptions seen on some machines where 3916reentrant control methods are protected by an AML mutex. The mutex will now 3917correctly block multiple threads from attempting to create the same object 3918more than once. 3919 3920Increased the number of available Owner Ids for namespace object tracking 3921from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3922some machines with a large number of ACPI tables (either static or dynamic). 3923 3924Fixed a problem with the AcpiExec utility where a fault could occur when the 3925-b switch (batch mode) is used. 3926 3927Enhanced the namespace dump routine to output the owner ID for each 3928namespace object. 3929 3930Code and Data Size: The current and previous library sizes for the core 3931subsystem are shown below. These are the code and data sizes for the 3932acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3933values do not include any ACPI driver or OSPM code. The debug version of the 3934code includes the debug output trace mechanism and has a much larger code 3935and data size. Note that these values will vary depending on the efficiency 3936of the compiler and the compiler options used during generation. 3937 3938 Previous Release: 3939 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3940 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3941 Current Release: 3942 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3943 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3944 3945 39462) iASL Compiler/Disassembler: 3947 3948Fixed a parse error during compilation of certain Switch/Case constructs. To 3949simplify the parse, the grammar now allows for multiple Default statements 3950and this error is now detected and flagged during the analysis phase. 3951 3952Disassembler: The disassembly now includes the contents of the original 3953table header within a comment at the start of the file. This includes the 3954name and version of the original ASL compiler. 3955 3956---------------------------------------- 395717 November 2005. Summary of changes for version 20051117: 3958 39591) ACPI CA Core Subsystem: 3960 3961Fixed a problem in the AML parser where the method thread count could be 3962decremented below zero if any errors occurred during the method parse phase. 3963This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3964This also fixed a related regression with the mechanism that detects and 3965corrects methods that cannot properly handle reentrancy (related to the 3966deployment of the new OwnerId mechanism.) 3967 3968Eliminated the pre-parsing of control methods (to detect errors) during 3969table load. Related to the problem above, this was causing unwind issues if 3970any errors occurred during the parse, and it seemed to be overkill. A table 3971load should not be aborted if there are problems with any single control 3972method, thus rendering this feature rather pointless. 3973 3974Fixed a problem with the new table-driven resource manager where an internal 3975buffer overflow could occur for small resource templates. 3976 3977Implemented a new external interface, AcpiGetVendorResource. This interface 3978will find and return a vendor-defined resource descriptor within a _CRS or 3979_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3980 3981Removed the length limit (200) on string objects as per the upcoming ACPI 39823.0A specification. This affects the following areas of the interpreter: 1) 3983any implicit conversion of a Buffer to a String, 2) a String object result 3984of the ASL Concatentate operator, 3) the String object result of the ASL 3985ToString operator. 3986 3987Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3988on a semaphore object would incorrectly timeout. This allows the 3989multithreading features of the AcpiExec utility to work properly under 3990Windows. 3991 3992Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3993the recently added file named "utresrc.c". 3994 3995Code and Data Size: The current and previous library sizes for the core 3996subsystem are shown below. These are the code and data sizes for the 3997acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3998values do not include any ACPI driver or OSPM code. The debug version of the 3999code includes the debug output trace mechanism and has a much larger code 4000and data size. Note that these values will vary depending on the efficiency 4001of the compiler and the compiler options used during generation. 4002 4003 Previous Release: 4004 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4005 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4006 Current Release: 4007 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 4008 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4009 4010 40112) iASL Compiler/Disassembler: 4012 4013Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 4014specification. For the iASL compiler, this means that string literals within 4015the source ASL can be of any length. 4016 4017Enhanced the listing output to dump the AML code for resource descriptors 4018immediately after the ASL code for each descriptor, instead of in a block at 4019the end of the entire resource template. 4020 4021Enhanced the compiler debug output to dump the entire original parse tree 4022constructed during the parse phase, before any transforms are applied to the 4023tree. The transformed tree is dumped also. 4024 4025---------------------------------------- 402602 November 2005. Summary of changes for version 20051102: 4027 40281) ACPI CA Core Subsystem: 4029 4030Modified the subsystem initialization sequence to improve GPE support. The 4031GPE initialization has been split into two parts in order to defer execution 4032of the _PRW methods (Power Resources for Wake) until after the hardware is 4033fully initialized and the SCI handler is installed. This allows the _PRW 4034methods to access fields protected by the Global Lock. This will fix systems 4035where a NO_GLOBAL_LOCK exception has been seen during initialization. 4036 4037Converted the ACPI internal object disassemble and display code within the 4038AML debugger to fully table-driven operation, reducing code size and 4039increasing maintainability. 4040 4041Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 4042in the 20051021 release. 4043 4044Implemented support for "local" internal ACPI object types within the 4045debugger "Object" command and the AcpiWalkNamespace external interfaces. 4046These local types include RegionFields, BankFields, IndexFields, Alias, and 4047reference objects. 4048 4049Moved common AML resource handling code into a new file, "utresrc.c". This 4050code is shared by both the Resource Manager and the AML Debugger. 4051 4052Code and Data Size: The current and previous library sizes for the core 4053subsystem are shown below. These are the code and data sizes for the 4054acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4055values do not include any ACPI driver or OSPM code. The debug version of the 4056code includes the debug output trace mechanism and has a much larger code 4057and data size. Note that these values will vary depending on the efficiency 4058of the compiler and the compiler options used during generation. 4059 4060 Previous Release: 4061 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4062 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4063 Current Release: 4064 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4065 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4066 4067 40682) iASL Compiler/Disassembler: 4069 4070Fixed a problem with very large initializer lists (more than 4000 elements) 4071for both Buffer and Package objects where the parse stack could overflow. 4072 4073Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4074characters within comment fields. The scan is now always performed and is no 4075longer optional, detecting invalid characters within a source file 4076immediately rather than during the parse phase or later. 4077 4078Enhanced the ASL grammar definition to force early reductions on all list- 4079style grammar elements so that the overall parse stack usage is greatly 4080reduced. This should improve performance and reduce the possibility of parse 4081stack overflow. 4082 4083Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4084with the addition of a %expected statement, the compiler generates from 4085source with no warnings. 4086 4087Fixed a possible segment fault in the disassembler if the input filename 4088does not contain a "dot" extension (Thomas Renninger). 4089 4090---------------------------------------- 409121 October 2005. Summary of changes for version 20051021: 4092 40931) ACPI CA Core Subsystem: 4094 4095Implemented support for the EM64T and other x86-64 processors. This 4096essentially entails recognizing that these processors support non-aligned 4097memory transfers. Previously, all 64-bit processors were assumed to lack 4098hardware support for non-aligned transfers. 4099 4100Completed conversion of the Resource Manager to nearly full table-driven 4101operation. Specifically, the resource conversion code (convert AML to 4102internal format and the reverse) and the debug code to dump internal 4103resource descriptors are fully table-driven, reducing code and data size and 4104improving maintainability. 4105 4106The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4107on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4108Alexey Starikovskiy) 4109 4110Implemented support within the resource conversion code for the Type- 4111Specific byte within the various ACPI 3.0 *WordSpace macros. 4112 4113Fixed some issues within the resource conversion code for the type-specific 4114flags for both Memory and I/O address resource descriptors. For Memory, 4115implemented support for the MTP and TTP flags. For I/O, split the TRS and 4116TTP flags into two separate fields. 4117 4118Code and Data Size: The current and previous library sizes for the core 4119subsystem are shown below. These are the code and data sizes for the 4120acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4121values do not include any ACPI driver or OSPM code. The debug version of the 4122code includes the debug output trace mechanism and has a much larger code 4123and data size. Note that these values will vary depending on the efficiency 4124of the compiler and the compiler options used during generation. 4125 4126 Previous Release: 4127 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4128 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4129 Current Release: 4130 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4131 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4132 4133 4134 41352) iASL Compiler/Disassembler: 4136 4137Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4138corresponding ResourceSource string was not also present in a resource 4139descriptor declaration. This restriction caused problems with existing 4140AML/ASL code that includes the Index byte without the string. When such AML 4141was disassembled, it could not be compiled without modification. Further, 4142the modified code created a resource template with a different size than the 4143original, breaking code that used fixed offsets into the resource template 4144buffer. 4145 4146Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4147byte. This byte is now emitted if present so that the exact AML can be 4148reproduced when the disassembled code is recompiled. 4149 4150Improved comments and text alignment for the resource descriptor code 4151emitted by the disassembler. 4152 4153Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4154Register() resource descriptor. 4155 4156---------------------------------------- 415730 September 2005. Summary of changes for version 20050930: 4158 41591) ACPI CA Core Subsystem: 4160 4161Completed a major overhaul of the Resource Manager code - specifically, 4162optimizations in the area of the AML/internal resource conversion code. The 4163code has been optimized to simplify and eliminate duplicated code, CPU stack 4164use has been decreased by optimizing function parameters and local 4165variables, and naming conventions across the manager have been standardized 4166for clarity and ease of maintenance (this includes function, parameter, 4167variable, and struct/typedef names.) The update may force changes in some 4168driver code, depending on how resources are handled by the host OS. 4169 4170All Resource Manager dispatch and information tables have been moved to a 4171single location for clarity and ease of maintenance. One new file was 4172created, named "rsinfo.c". 4173 4174The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4175guarantee that the argument is not evaluated twice, making them less prone 4176to macro side-effects. However, since there exists the possibility of 4177additional stack use if a particular compiler cannot optimize them (such as 4178in the debug generation case), the original macros are optionally available. 4179Note that some invocations of the return_VALUE macro may now cause size 4180mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4181eliminate these. (From Randy Dunlap) 4182 4183Implemented a new mechanism to enable debug tracing for individual control 4184methods. A new external interface, AcpiDebugTrace, is provided to enable 4185this mechanism. The intent is to allow the host OS to easily enable and 4186disable tracing for problematic control methods. This interface can be 4187easily exposed to a user or debugger interface if desired. See the file 4188psxface.c for details. 4189 4190AcpiUtCallocate will now return a valid pointer if a length of zero is 4191specified - a length of one is used and a warning is issued. This matches 4192the behavior of AcpiUtAllocate. 4193 4194Code and Data Size: The current and previous library sizes for the core 4195subsystem are shown below. These are the code and data sizes for the 4196acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4197values do not include any ACPI driver or OSPM code. The debug version of the 4198code includes the debug output trace mechanism and has a much larger code 4199and data size. Note that these values will vary depending on the efficiency 4200of the compiler and the compiler options used during generation. 4201 4202 Previous Release: 4203 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4204 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4205 Current Release: 4206 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4207 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4208 4209 42102) iASL Compiler/Disassembler: 4211 4212A remark is issued if the effective compile-time length of a package or 4213buffer is zero. Previously, this was a warning. 4214 4215---------------------------------------- 421616 September 2005. Summary of changes for version 20050916: 4217 42181) ACPI CA Core Subsystem: 4219 4220Fixed a problem within the Resource Manager where support for the Generic 4221Register descriptor was not fully implemented. This descriptor is now fully 4222recognized, parsed, disassembled, and displayed. 4223 4224Completely restructured the Resource Manager code to utilize table-driven 4225dispatch and lookup, eliminating many of the large switch() statements. This 4226reduces overall subsystem code size and code complexity. Affects the 4227resource parsing and construction, disassembly, and debug dump output. 4228 4229Cleaned up and restructured the debug dump output for all resource 4230descriptors. Improved readability of the output and reduced code size. 4231 4232Fixed a problem where changes to internal data structures caused the 4233optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4234 4235Code and Data Size: The current and previous library sizes for the core 4236subsystem are shown below. These are the code and data sizes for the 4237acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4238values do not include any ACPI driver or OSPM code. The debug version of the 4239code includes the debug output trace mechanism and has a much larger code 4240and data size. Note that these values will vary depending on the efficiency 4241of the compiler and the compiler options used during generation. 4242 4243 Previous Release: 4244 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4245 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4246 Current Release: 4247 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4248 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4249 4250 42512) iASL Compiler/Disassembler: 4252 4253Updated the disassembler to automatically insert an EndDependentFn() macro 4254into the ASL stream if this macro is missing in the original AML code, 4255simplifying compilation of the resulting ASL module. 4256 4257Fixed a problem in the disassembler where a disassembled ResourceSource 4258string (within a large resource descriptor) was not surrounded by quotes and 4259not followed by a comma, causing errors when the resulting ASL module was 4260compiled. Also, escape sequences within a ResourceSource string are now 4261handled correctly (especially "\\") 4262 4263---------------------------------------- 426402 September 2005. Summary of changes for version 20050902: 4265 42661) ACPI CA Core Subsystem: 4267 4268Fixed a problem with the internal Owner ID allocation and deallocation 4269mechanisms for control method execution and recursive method invocation. 4270This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4271messages seen on some systems. Recursive method invocation depth is 4272currently limited to 255. (Alexey Starikovskiy) 4273 4274Completely eliminated all vestiges of support for the "module-level 4275executable code" until this support is fully implemented and debugged. This 4276should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4277some systems that invoke this support. 4278 4279Fixed a problem within the resource manager code where the transaction flags 4280for a 64-bit address descriptor were handled incorrectly in the type- 4281specific flag byte. 4282 4283Consolidated duplicate code within the address descriptor resource manager 4284code, reducing overall subsystem code size. 4285 4286Fixed a fault when using the AML debugger "disassemble" command to 4287disassemble individual control methods. 4288 4289Removed references to the "release_current" directory within the Unix 4290release package. 4291 4292Code and Data Size: The current and previous core subsystem library sizes 4293are shown below. These are the code and data sizes for the acpica.lib 4294produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4295include any ACPI driver or OSPM code. The debug version of the code includes 4296the debug output trace mechanism and has a much larger code and data size. 4297Note that these values will vary depending on the efficiency of the compiler 4298and the compiler options used during generation. 4299 4300 Previous Release: 4301 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4302 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4303 Current Release: 4304 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4305 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4306 4307 43082) iASL Compiler/Disassembler: 4309 4310Implemented an error check for illegal duplicate values in the interrupt and 4311dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4312Interrupt(). 4313 4314Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4315too many values in the interrupt list (16 max) and invalid values in the 4316list (range 0 - 15) 4317 4318The maximum length string literal within an ASL file is now restricted to 4319200 characters as per the ACPI specification. 4320 4321Fixed a fault when using the -ln option (generate namespace listing). 4322 4323Implemented an error check to determine if a DescriptorName within a 4324resource descriptor has already been used within the current scope. 4325 4326---------------------------------------- 432715 August 2005. Summary of changes for version 20050815: 4328 43291) ACPI CA Core Subsystem: 4330 4331Implemented a full bytewise compare to determine if a table load request is 4332attempting to load a duplicate table. The compare is performed if the table 4333signatures and table lengths match. This will allow different tables with 4334the same OEM Table ID and revision to be loaded - probably against the ACPI 4335specification, but discovered in the field nonetheless. 4336 4337Added the changes.txt logfile to each of the zipped release packages. 4338 4339Code and Data Size: Current and previous core subsystem library sizes are 4340shown below. These are the code and data sizes for the acpica.lib produced 4341by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4342any ACPI driver or OSPM code. The debug version of the code includes the 4343debug output trace mechanism and has a much larger code and data size. Note 4344that these values will vary depending on the efficiency of the compiler and 4345the compiler options used during generation. 4346 4347 Previous Release: 4348 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4349 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4350 Current Release: 4351 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4352 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4353 4354 43552) iASL Compiler/Disassembler: 4356 4357Fixed a problem where incorrect AML code could be generated for Package 4358objects if optimization is disabled (via the -oa switch). 4359 4360Fixed a problem with where incorrect AML code is generated for variable- 4361length packages when the package length is not specified and the number of 4362initializer values is greater than 255. 4363 4364 4365---------------------------------------- 436629 July 2005. Summary of changes for version 20050729: 4367 43681) ACPI CA Core Subsystem: 4369 4370Implemented support to ignore an attempt to install/load a particular ACPI 4371table more than once. Apparently there exists BIOS code that repeatedly 4372attempts to load the same SSDT upon certain events. With assistance from 4373Venkatesh Pallipadi. 4374 4375Restructured the main interface to the AML parser in order to correctly 4376handle all exceptional conditions. This will prevent leakage of the OwnerId 4377resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4378machines. With assistance from Alexey Starikovskiy. 4379 4380Support for "module level code" has been disabled in this version due to a 4381number of issues that have appeared on various machines. The support can be 4382enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4383compilation. When the issues are fully resolved, the code will be enabled by 4384default again. 4385 4386Modified the internal functions for debug print support to define the 4387FunctionName parameter as a (const char *) for compatibility with compiler 4388built-in macros such as __FUNCTION__, etc. 4389 4390Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4391 4392Implemented support to display an object count summary for the AML Debugger 4393commands Object and Methods. 4394 4395Code and Data Size: Current and previous core subsystem library sizes are 4396shown below. These are the code and data sizes for the acpica.lib produced 4397by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4398any ACPI driver or OSPM code. The debug version of the code includes the 4399debug output trace mechanism and has a much larger code and data size. Note 4400that these values will vary depending on the efficiency of the compiler and 4401the compiler options used during generation. 4402 4403 Previous Release: 4404 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4405 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4406 Current Release: 4407 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4408 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4409 4410 44112) iASL Compiler/Disassembler: 4412 4413Fixed a regression that appeared in the 20050708 version of the compiler 4414where an error message was inadvertently emitted for invocations of the _OSI 4415reserved control method. 4416 4417---------------------------------------- 441808 July 2005. Summary of changes for version 20050708: 4419 44201) ACPI CA Core Subsystem: 4421 4422The use of the CPU stack in the debug version of the subsystem has been 4423considerably reduced. Previously, a debug structure was declared in every 4424function that used the debug macros. This structure has been removed in 4425favor of declaring the individual elements as parameters to the debug 4426functions. This reduces the cumulative stack use during nested execution of 4427ACPI function calls at the cost of a small increase in the code size of the 4428debug version of the subsystem. With assistance from Alexey Starikovskiy and 4429Len Brown. 4430 4431Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4432headers to define a macro that will return the current function name at 4433runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4434the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4435compiler-dependent header, the function name is saved on the CPU stack (one 4436pointer per function.) This mechanism is used because apparently there 4437exists no standard ANSI-C defined macro that that returns the function name. 4438 4439Redesigned and reimplemented the "Owner ID" mechanism used to track 4440namespace objects created/deleted by ACPI tables and control method 4441execution. A bitmap is now used to allocate and free the IDs, thus solving 4442the wraparound problem present in the previous implementation. The size of 4443the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4444Starikovskiy). 4445 4446Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4447flag definitions within the headers for the predefined ACPI tables. These 4448have been replaced by UINT8_BIT in order to increase the code portability of 4449the subsystem. If the use of UINT8 remains a problem, we may be forced to 4450eliminate bitfields entirely because of a lack of portability. 4451 4452Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4453is a frequently used function and this improvement increases the performance 4454of the entire subsystem (Alexey Starikovskiy). 4455 4456Fixed several possible memory leaks and the inverse - premature object 4457deletion (Alexey Starikovskiy). 4458 4459Code and Data Size: Current and previous core subsystem library sizes are 4460shown below. These are the code and data sizes for the acpica.lib produced 4461by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4462any ACPI driver or OSPM code. The debug version of the code includes the 4463debug output trace mechanism and has a much larger code and data size. Note 4464that these values will vary depending on the efficiency of the compiler and 4465the compiler options used during generation. 4466 4467 Previous Release: 4468 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4469 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4470 Current Release: 4471 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4472 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4473 4474---------------------------------------- 447524 June 2005. Summary of changes for version 20050624: 4476 44771) ACPI CA Core Subsystem: 4478 4479Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4480the host-defined cache object. This allows the OSL implementation to define 4481and type this object in any manner desired, simplifying the OSL 4482implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4483Linux, and should be defined in the OS-specific header file for other 4484operating systems as required. 4485 4486Changed the interface to AcpiOsAcquireObject to directly return the 4487requested object as the function return (instead of ACPI_STATUS.) This 4488change was made for performance reasons, since this is the purpose of the 4489interface in the first place. AcpiOsAcquireObject is now similar to the 4490AcpiOsAllocate interface. 4491 4492Implemented a new AML debugger command named Businfo. This command displays 4493information about all devices that have an associate _PRT object. The _ADR, 4494_HID, _UID, and _CID are displayed for these devices. 4495 4496Modified the initialization sequence in AcpiInitializeSubsystem to call the 4497OSL interface AcpiOslInitialize first, before any local initialization. This 4498change was required because the global initialization now calls OSL 4499interfaces. 4500 4501Enhanced the Dump command to display the entire contents of Package objects 4502(including all sub-objects and their values.) 4503 4504Restructured the code base to split some files because of size and/or 4505because the code logically belonged in a separate file. New files are listed 4506below. All makefiles and project files included in the ACPI CA release have 4507been updated. 4508 utilities/utcache.c /* Local cache interfaces */ 4509 utilities/utmutex.c /* Local mutex support */ 4510 utilities/utstate.c /* State object support */ 4511 interpreter/parser/psloop.c /* Main AML parse loop */ 4512 4513Code and Data Size: Current and previous core subsystem library sizes are 4514shown below. These are the code and data sizes for the acpica.lib produced 4515by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4516any ACPI driver or OSPM code. The debug version of the code includes the 4517debug output trace mechanism and has a much larger code and data size. Note 4518that these values will vary depending on the efficiency of the compiler and 4519the compiler options used during generation. 4520 4521 Previous Release: 4522 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4523 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4524 Current Release: 4525 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4526 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4527 4528 45292) iASL Compiler/Disassembler: 4530 4531Fixed a regression introduced in version 20050513 where the use of a Package 4532object within a Case() statement caused a compile time exception. The 4533original behavior has been restored (a Match() operator is emitted.) 4534 4535---------------------------------------- 453617 June 2005. Summary of changes for version 20050617: 4537 45381) ACPI CA Core Subsystem: 4539 4540Moved the object cache operations into the OS interface layer (OSL) to allow 4541the host OS to handle these operations if desired (for example, the Linux 4542OSL will invoke the slab allocator). This support is optional; the compile 4543time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4544code in the ACPI CA core. The new OSL interfaces are shown below. See 4545utalloc.c for an example implementation, and acpiosxf.h for the exact 4546interface definitions. With assistance from Alexey Starikovskiy. 4547 AcpiOsCreateCache 4548 AcpiOsDeleteCache 4549 AcpiOsPurgeCache 4550 AcpiOsAcquireObject 4551 AcpiOsReleaseObject 4552 4553Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4554and restore a flags parameter. This fits better with many OS lock models. 4555Note: the current execution state (interrupt handler or not) is no longer 4556passed to these interfaces. If necessary, the OSL must determine this state 4557by itself, a simple and fast operation. With assistance from Alexey 4558Starikovskiy. 4559 4560Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4561present if the revision of the RSDP was 2 or greater. According to the ACPI 4562specification, the XSDT is optional in all cases, and the table manager 4563therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4564Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4565only the RSDT. 4566 4567Fixed an interpreter problem with the Mid() operator in the case of an input 4568string where the resulting output string is of zero length. It now correctly 4569returns a valid, null terminated string object instead of a string object 4570with a null pointer. 4571 4572Fixed a problem with the control method argument handling to allow a store 4573to an Arg object that already contains an object of type Device. The Device 4574object is now correctly overwritten. Previously, an error was returned. 4575 4576 4577Enhanced the debugger Find command to emit object values in addition to the 4578found object pathnames. The output format is the same as the dump namespace 4579command. 4580 4581Enhanced the debugger Set command. It now has the ability to set the value 4582of any Named integer object in the namespace (Previously, only method locals 4583and args could be set.) 4584 4585Code and Data Size: Current and previous core subsystem library sizes are 4586shown below. These are the code and data sizes for the acpica.lib produced 4587by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4588any ACPI driver or OSPM code. The debug version of the code includes the 4589debug output trace mechanism and has a much larger code and data size. Note 4590that these values will vary depending on the efficiency of the compiler and 4591the compiler options used during generation. 4592 4593 Previous Release: 4594 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4595 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4596 Current Release: 4597 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4598 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4599 4600 46012) iASL Compiler/Disassembler: 4602 4603Fixed a regression in the disassembler where if/else/while constructs were 4604output incorrectly. This problem was introduced in the previous release 4605(20050526). This problem also affected the single-step disassembly in the 4606debugger. 4607 4608Fixed a problem where compiling the reserved _OSI method would randomly (but 4609rarely) produce compile errors. 4610 4611Enhanced the disassembler to emit compilable code in the face of incorrect 4612AML resource descriptors. If the optional ResourceSourceIndex is present, 4613but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4614disassembly. Otherwise, the resulting code cannot be compiled without 4615errors. 4616 4617---------------------------------------- 461826 May 2005. Summary of changes for version 20050526: 4619 46201) ACPI CA Core Subsystem: 4621 4622Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4623the module level (not within a control method.) These opcodes are executed 4624exactly once at the time the table is loaded. This type of code was legal up 4625until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4626order to provide backwards compatibility with earlier BIOS implementations. 4627This eliminates the "Encountered executable code at module level" warning 4628that was previously generated upon detection of such code. 4629 4630Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4631inadvertently be generated during the lookup of namespace objects in the 4632second pass parse of ACPI tables and control methods. It appears that this 4633problem could occur during the resolution of forward references to namespace 4634objects. 4635 4636Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4637corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4638allows the deadlock detection debug code to be compiled out in the normal 4639case, improving mutex performance (and overall subsystem performance) 4640considerably. 4641 4642Implemented a handful of miscellaneous fixes for possible memory leaks on 4643error conditions and error handling control paths. These fixes were 4644suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4645 4646Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4647to prevent a fault in this error case. 4648 4649Code and Data Size: Current and previous core subsystem library sizes are 4650shown below. These are the code and data sizes for the acpica.lib produced 4651by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4652any ACPI driver or OSPM code. The debug version of the code includes the 4653debug output trace mechanism and has a much larger code and data size. Note 4654that these values will vary depending on the efficiency of the compiler and 4655the compiler options used during generation. 4656 4657 Previous Release: 4658 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4659 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4660 Current Release: 4661 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4662 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4663 4664 46652) iASL Compiler/Disassembler: 4666 4667Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4668the module level (not within a control method.) These operators will be 4669executed once at the time the table is loaded. This type of code was legal 4670up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4671compiler in order to provide backwards compatibility with earlier BIOS ASL 4672code. 4673 4674The ACPI integer width (specified via the table revision ID or the -r 4675override, 32 or 64 bits) is now used internally during compile-time constant 4676folding to ensure that constants are truncated to 32 bits if necessary. 4677Previously, the revision ID value was only emitted in the AML table header. 4678 4679An error message is now generated for the Mutex and Method operators if the 4680SyncLevel parameter is outside the legal range of 0 through 15. 4681 4682Fixed a problem with the Method operator ParameterTypes list handling (ACPI 46833.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4684The actual underlying implementation of method argument typechecking is 4685still under development, however. 4686 4687---------------------------------------- 468813 May 2005. Summary of changes for version 20050513: 4689 46901) ACPI CA Core Subsystem: 4691 4692Implemented support for PCI Express root bridges -- added support for device 4693PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4694 4695The interpreter now automatically truncates incoming 64-bit constants to 32 4696bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4697also affects the iASL compiler constant folding. (Note: as per below, the 4698iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4699 4700Fixed a problem where string and buffer objects with "static" pointers 4701(pointers to initialization data within an ACPI table) were not handled 4702consistently. The internal object copy operation now always copies the data 4703to a newly allocated buffer, regardless of whether the source object is 4704static or not. 4705 4706Fixed a problem with the FromBCD operator where an implicit result 4707conversion was improperly performed while storing the result to the target 4708operand. Since this is an "explicit conversion" operator, the implicit 4709conversion should never be performed on the output. 4710 4711Fixed a problem with the CopyObject operator where a copy to an existing 4712named object did not always completely overwrite the existing object stored 4713at name. Specifically, a buffer-to-buffer copy did not delete the existing 4714buffer. 4715 4716Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4717structs for consistency. 4718 4719Code and Data Size: Current and previous core subsystem library sizes are 4720shown below. These are the code and data sizes for the acpica.lib produced 4721by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4722any ACPI driver or OSPM code. The debug version of the code includes the 4723debug output trace mechanism and has a much larger code and data size. Note 4724that these values will vary depending on the efficiency of the compiler and 4725the compiler options used during generation. 4726 4727 Previous Release: 4728 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4729 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4730 Current Release: (Same sizes) 4731 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4732 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4733 4734 47352) iASL Compiler/Disassembler: 4736 4737The compiler now emits a warning if an attempt is made to generate a 64-bit 4738integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4739is truncated to 32 bits. 4740 4741Fixed a problem with large package objects: if the static length of the 4742package is greater than 255, the "variable length package" opcode is 4743emitted. Previously, this caused an error. This requires an update to the 4744ACPI spec, since it currently (incorrectly) states that packages larger than 4745255 elements are not allowed. 4746 4747The disassembler now correctly handles variable length packages and packages 4748larger than 255 elements. 4749 4750---------------------------------------- 475108 April 2005. Summary of changes for version 20050408: 4752 47531) ACPI CA Core Subsystem: 4754 4755Fixed three cases in the interpreter where an "index" argument to an ASL 4756function was still (internally) 32 bits instead of the required 64 bits. 4757This was the Index argument to the Index, Mid, and Match operators. 4758 4759The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4760not a POSIX-defined function and not present in most kernel-level C 4761libraries. All references to the C library strupr function have been removed 4762from the headers. 4763 4764Completed the deployment of static functions/prototypes. All prototypes with 4765the static attribute have been moved from the headers to the owning C file. 4766 4767Implemented an extract option (-e) for the AcpiBin utility (AML binary 4768utility). This option allows the utility to extract individual ACPI tables 4769from the output of AcpiDmp. It provides the same functionality of the 4770acpixtract.pl perl script without the worry of setting the correct perl 4771options. AcpiBin runs on Windows and has not yet been generated/validated in 4772the Linux/Unix environment (but should be soon). 4773 4774Updated and fixed the table dump option for AcpiBin (-d). This option 4775converts a single ACPI table to a hex/ascii file, similar to the output of 4776AcpiDmp. 4777 4778Code and Data Size: Current and previous core subsystem library sizes are 4779shown below. These are the code and data sizes for the acpica.lib produced 4780by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4781any ACPI driver or OSPM code. The debug version of the code includes the 4782debug output trace mechanism and has a much larger code and data size. Note 4783that these values will vary depending on the efficiency of the compiler and 4784the compiler options used during generation. 4785 4786 Previous Release: 4787 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4788 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4789 Current Release: 4790 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4791 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4792 4793 47942) iASL Compiler/Disassembler: 4795 4796Disassembler fix: Added a check to ensure that the table length found in the 4797ACPI table header within the input file is not longer than the actual input 4798file size. This indicates some kind of file or table corruption. 4799 4800---------------------------------------- 480129 March 2005. Summary of changes for version 20050329: 4802 48031) ACPI CA Core Subsystem: 4804 4805An error is now generated if an attempt is made to create a Buffer Field of 4806length zero (A CreateField with a length operand of zero.) 4807 4808The interpreter now issues a warning whenever executable code at the module 4809level is detected during ACPI table load. This will give some idea of the 4810prevalence of this type of code. 4811 4812Implemented support for references to named objects (other than control 4813methods) within package objects. 4814 4815Enhanced package object output for the debug object. Package objects are now 4816completely dumped, showing all elements. 4817 4818Enhanced miscellaneous object output for the debug object. Any object can 4819now be written to the debug object (for example, a device object can be 4820written, and the type of the object will be displayed.) 4821 4822The "static" qualifier has been added to all local functions across both the 4823core subsystem and the iASL compiler. 4824 4825The number of "long" lines (> 80 chars) within the source has been 4826significantly reduced, by about 1/3. 4827 4828Cleaned up all header files to ensure that all CA/iASL functions are 4829prototyped (even static functions) and the formatting is consistent. 4830 4831Two new header files have been added, acopcode.h and acnames.h. 4832 4833Removed several obsolete functions that were no longer used. 4834 4835Code and Data Size: Current and previous core subsystem library sizes are 4836shown below. These are the code and data sizes for the acpica.lib produced 4837by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4838any ACPI driver or OSPM code. The debug version of the code includes the 4839debug output trace mechanism and has a much larger code and data size. Note 4840that these values will vary depending on the efficiency of the compiler and 4841the compiler options used during generation. 4842 4843 Previous Release: 4844 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4845 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4846 Current Release: 4847 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4848 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4849 4850 4851 48522) iASL Compiler/Disassembler: 4853 4854Fixed a problem with the resource descriptor generation/support. For the 4855ResourceSourceIndex and the ResourceSource fields, both must be present, or 4856both must be not present - can't have one without the other. 4857 4858The compiler now returns non-zero from the main procedure if any errors have 4859occurred during the compilation. 4860 4861 4862---------------------------------------- 486309 March 2005. Summary of changes for version 20050309: 4864 48651) ACPI CA Core Subsystem: 4866 4867The string-to-buffer implicit conversion code has been modified again after 4868a change to the ACPI specification. In order to match the behavior of the 4869other major ACPI implementation, the target buffer is no longer truncated if 4870the source string is smaller than an existing target buffer. This change 4871requires an update to the ACPI spec, and should eliminate the recent 4872AE_AML_BUFFER_LIMIT issues. 4873 4874The "implicit return" support was rewritten to a new algorithm that solves 4875the general case. Rather than attempt to determine when a method is about to 4876exit, the result of every ASL operator is saved momentarily until the very 4877next ASL operator is executed. Therefore, no matter how the method exits, 4878there will always be a saved implicit return value. This feature is only 4879enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4880AE_AML_NO_RETURN_VALUE errors when enabled. 4881 4882Implemented implicit conversion support for the predicate (operand) of the 4883If, Else, and While operators. String and Buffer arguments are automatically 4884converted to Integers. 4885 4886Changed the string-to-integer conversion behavior to match the new ACPI 4887errata: "If no integer object exists, a new integer is created. The ASCII 4888string is interpreted as a hexadecimal constant. Each string character is 4889interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4890with the first character as the most significant digit, and ending with the 4891first non-hexadecimal character or end-of-string." This means that the first 4892non-hex character terminates the conversion and this is the code that was 4893changed. 4894 4895Fixed a problem where the ObjectType operator would fail (fault) when used 4896on an Index of a Package which pointed to a null package element. The 4897operator now properly returns zero (Uninitialized) in this case. 4898 4899Fixed a problem where the While operator used excessive memory by not 4900properly popping the result stack during execution. There was no memory leak 4901after execution, however. (Code provided by Valery Podrezov.) 4902 4903Fixed a problem where references to control methods within Package objects 4904caused the method to be invoked, instead of producing a reference object 4905pointing to the method. 4906 4907Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4908improve performance and reduce code size. (Code provided by Alexey 4909Starikovskiy.) 4910 4911Code and Data Size: Current and previous core subsystem library sizes are 4912shown below. These are the code and data sizes for the acpica.lib produced 4913by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4914any ACPI driver or OSPM code. The debug version of the code includes the 4915debug output trace mechanism and has a much larger code and data size. Note 4916that these values will vary depending on the efficiency of the compiler and 4917the compiler options used during generation. 4918 4919 Previous Release: 4920 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4921 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4922 Current Release: 4923 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4924 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4925 4926 49272) iASL Compiler/Disassembler: 4928 4929Fixed a problem with the Return operator with no arguments. Since the AML 4930grammar for the byte encoding requires an operand for the Return opcode, the 4931compiler now emits a Return(Zero) for this case. An ACPI specification 4932update has been written for this case. 4933 4934For tables other than the DSDT, namepath optimization is automatically 4935disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4936compiler has no knowledge of where, and thus cannot optimize namepaths. 4937 4938Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4939inadvertently omitted from the ACPI specification, and will require an 4940update to the spec. 4941 4942The source file scan for ASCII characters is now optional (-a). This change 4943was made because some vendors place non-ascii characters within comments. 4944However, the scan is simply a brute-force byte compare to ensure all 4945characters in the file are in the range 0x00 to 0x7F. 4946 4947Fixed a problem with the CondRefOf operator where the compiler was 4948inappropriately checking for the existence of the target. Since the point of 4949the operator is to check for the existence of the target at run-time, the 4950compiler no longer checks for the target existence. 4951 4952Fixed a problem where errors generated from the internal AML interpreter 4953during constant folding were not handled properly, causing a fault. 4954 4955Fixed a problem with overly aggressive range checking for the Stall 4956operator. The valid range (max 255) is now only checked if the operand is of 4957type Integer. All other operand types cannot be statically checked. 4958 4959Fixed a problem where control method references within the RefOf, DeRefOf, 4960and ObjectType operators were not treated properly. They are now treated as 4961actual references, not method invocations. 4962 4963Fixed and enhanced the "list namespace" option (-ln). This option was broken 4964a number of releases ago. 4965 4966Improved error handling for the Field, IndexField, and BankField operators. 4967The compiler now cleanly reports and recovers from errors in the field 4968component (FieldUnit) list. 4969 4970Fixed a disassembler problem where the optional ResourceDescriptor fields 4971TRS and TTP were not always handled correctly. 4972 4973Disassembler - Comments in output now use "//" instead of "/*" 4974 4975---------------------------------------- 497628 February 2005. Summary of changes for version 20050228: 4977 49781) ACPI CA Core Subsystem: 4979 4980Fixed a problem where the result of an Index() operator (an object 4981reference) must increment the reference count on the target object for the 4982life of the object reference. 4983 4984Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4985Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4986resource descriptors. 4987 4988Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4989Space Descriptor" string, indicating interpreter support for the descriptors 4990above. 4991 4992Implemented header support for the new ACPI 3.0 FADT flag bits. 4993 4994Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4995status/enable registers. 4996 4997Updated header support for the MADT processor local Apic struct and MADT 4998platform interrupt source struct for new ACPI 3.0 fields. 4999 5000Implemented header support for the SRAT and SLIT ACPI tables. 5001 5002Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 5003at runtime. 5004 5005Code and Data Size: Current and previous core subsystem library sizes are 5006shown below. These are the code and data sizes for the acpica.lib produced 5007by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5008any ACPI driver or OSPM code. The debug version of the code includes the 5009debug output trace mechanism and has a much larger code and data size. Note 5010that these values will vary depending on the efficiency of the compiler and 5011the compiler options used during generation. 5012 5013 Previous Release: 5014 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5015 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5016 Current Release: 5017 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5018 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 5019 5020 50212) iASL Compiler/Disassembler: 5022 5023Fixed a problem with the internal 64-bit String-to-integer conversion with 5024strings less than two characters long. 5025 5026Fixed a problem with constant folding where the result of the Index() 5027operator can not be considered a constant. This means that Index() cannot be 5028a type3 opcode and this will require an update to the ACPI specification. 5029 5030Disassembler: Implemented support for the TTP, MTP, and TRS resource 5031descriptor fields. These fields were inadvertently ignored and not output in 5032the disassembly of the resource descriptor. 5033 5034 5035 ---------------------------------------- 503611 February 2005. Summary of changes for version 20050211: 5037 50381) ACPI CA Core Subsystem: 5039 5040Implemented ACPI 3.0 support for implicit conversion within the Match() 5041operator. MatchObjects can now be of type integer, buffer, or string instead 5042of just type integer. Package elements are implicitly converted to the type 5043of the MatchObject. This change aligns the behavior of Match() with the 5044behavior of the other logical operators (LLess(), etc.) It also requires an 5045errata change to the ACPI specification as this support was intended for 5046ACPI 3.0, but was inadvertently omitted. 5047 5048Fixed a problem with the internal implicit "to buffer" conversion. Strings 5049that are converted to buffers will cause buffer truncation if the string is 5050smaller than the target buffer. Integers that are converted to buffers will 5051not cause buffer truncation, only zero extension (both as per the ACPI 5052spec.) The problem was introduced when code was added to truncate the 5053buffer, but this should not be performed in all cases, only the string case. 5054 5055Fixed a problem with the Buffer and Package operators where the interpreter 5056would get confused if two such operators were used as operands to an ASL 5057operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 5058stack was not being popped after the execution of these operators, resulting 5059in an AE_NO_RETURN_VALUE exception. 5060 5061Fixed a problem with constructs of the form Store(Index(...),...). The 5062reference object returned from Index was inadvertently resolved to an actual 5063value. This problem was introduced in version 20050114 when the behavior of 5064Store() was modified to restrict the object types that can be used as the 5065source operand (to match the ACPI specification.) 5066 5067Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5068 5069Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5070 5071Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5072 5073Code and Data Size: Current and previous core subsystem library sizes are 5074shown below. These are the code and data sizes for the acpica.lib produced 5075by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5076any ACPI driver or OSPM code. The debug version of the code includes the 5077debug output trace mechanism and has a much larger code and data size. Note 5078that these values will vary depending on the efficiency of the compiler and 5079the compiler options used during generation. 5080 5081 Previous Release: 5082 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5083 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5084 Current Release: 5085 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5086 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5087 5088 50892) iASL Compiler/Disassembler: 5090 5091Fixed a code generation problem in the constant folding optimization code 5092where incorrect code was generated if a constant was reduced to a buffer 5093object (i.e., a reduced type 5 opcode.) 5094 5095Fixed a typechecking problem for the ToBuffer operator. Caused by an 5096incorrect return type in the internal opcode information table. 5097 5098---------------------------------------- 509925 January 2005. Summary of changes for version 20050125: 5100 51011) ACPI CA Core Subsystem: 5102 5103Fixed a recently introduced problem with the Global Lock where the 5104underlying semaphore was not created. This problem was introduced in 5105version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5106Acquire() operation on _GL. 5107 5108The local object cache is now optional, and is disabled by default. Both 5109AcpiExec and the iASL compiler enable the cache because they run in user 5110mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5111to enable the local cache. 5112 5113Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5114optional "implicit return" support where an error was returned if no return 5115object was expected, but one was implicitly returned. AE_OK is now returned 5116in this case and the implicitly returned object is deleted. 5117AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5118methods such as _STA and _INI where the return type is known up front. 5119 5120Fixed a few issues with the internal convert-to-integer code. It now returns 5121an error if an attempt is made to convert a null string, a string of only 5122blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5123and explicit conversion via the ToInteger() operator. 5124 5125The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5126not needed for normal operation and should increase the performance of the 5127entire subsystem. The code remains in case it is needed for debug purposes 5128again. 5129 5130The AcpiExec source and makefile are included in the Unix/Linux package for 5131the first time. 5132 5133Code and Data Size: Current and previous core subsystem library sizes are 5134shown below. These are the code and data sizes for the acpica.lib produced 5135by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5136any ACPI driver or OSPM code. The debug version of the code includes the 5137debug output trace mechanism and has a much larger code and data size. Note 5138that these values will vary depending on the efficiency of the compiler and 5139the compiler options used during generation. 5140 5141 Previous Release: 5142 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5143 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5144 Current Release: 5145 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5146 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5147 51482) iASL Compiler/Disassembler: 5149 5150Switch/Case support: A warning is now issued if the type of the Switch value 5151cannot be determined at compile time. For example, Switch(Arg0) will 5152generate the warning, and the type is assumed to be an integer. As per the 5153ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5154warning. 5155 5156Switch/Case support: Implemented support for buffer and string objects as 5157the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5158buffers and strings. 5159 5160Switch/Case support: The emitted code for the LEqual() comparisons now uses 5161the switch value as the first operand, not the second. The case value is now 5162the second operand, and this allows the case value to be implicitly 5163converted to the type of the switch value, not the other way around. 5164 5165Switch/Case support: Temporary variables are now emitted immediately within 5166the control method, not at the global level. This means that there are now 516736 temps available per-method, not 36 temps per-module as was the case with 5168the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5169 5170---------------------------------------- 517114 January 2005. Summary of changes for version 20050114: 5172 5173Added 2005 copyright to all module headers. This affects every module in 5174the core subsystem, iASL compiler, and the utilities. 5175 51761) ACPI CA Core Subsystem: 5177 5178Fixed an issue with the String-to-Buffer conversion code where the string 5179null terminator was not included in the buffer after conversion, but there 5180is existing ASL that assumes the string null terminator is included. This is 5181the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5182introduced in the previous version when the code was updated to correctly 5183set the converted buffer size as per the ACPI specification. The ACPI spec 5184is ambiguous and will be updated to specify that the null terminator must be 5185included in the converted buffer. This also affects the ToBuffer() ASL 5186operator. 5187 5188Fixed a problem with the Mid() ASL/AML operator where it did not work 5189correctly on Buffer objects. Newly created sub-buffers were not being marked 5190as initialized. 5191 5192 5193Fixed a problem in AcpiTbFindTable where incorrect string compares were 5194performed on the OemId and OemTableId table header fields. These fields are 5195not null terminated, so strncmp is now used instead of strcmp. 5196 5197Implemented a restriction on the Store() ASL/AML operator to align the 5198behavior with the ACPI specification. Previously, any object could be used 5199as the source operand. Now, the only objects that may be used are Integers, 5200Buffers, Strings, Packages, Object References, and DDB Handles. If 5201necessary, the original behavior can be restored by enabling the 5202EnableInterpreterSlack flag. 5203 5204Enhanced the optional "implicit return" support to allow an implicit return 5205value from methods that are invoked externally via the AcpiEvaluateObject 5206interface. This enables implicit returns from the _STA and _INI methods, 5207for example. 5208 5209Changed the Revision() ASL/AML operator to return the current version of the 5210AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5211the supported ACPI version (This is the function of the _REV method). 5212 5213Updated the _REV predefined method to return the currently supported version 5214of ACPI, now 3. 5215 5216Implemented batch mode option for the AcpiExec utility (-b). 5217 5218Code and Data Size: Current and previous core subsystem library sizes are 5219shown below. These are the code and data sizes for the acpica.lib produced 5220by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5221any ACPI driver or OSPM code. The debug version of the code includes the 5222debug output trace mechanism and has a much larger code and data size. Note 5223that these values will vary depending on the efficiency of the compiler and 5224the compiler options used during generation. 5225 5226 Previous Release: 5227 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5228 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5229 Current Release: 5230 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5231 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5232 5233---------------------------------------- 523410 December 2004. Summary of changes for version 20041210: 5235 5236ACPI 3.0 support is nearing completion in both the iASL compiler and the 5237ACPI CA core subsystem. 5238 52391) ACPI CA Core Subsystem: 5240 5241Fixed a problem in the ToDecimalString operator where the resulting string 5242length was incorrectly calculated. The length is now calculated exactly, 5243eliminating incorrect AE_STRING_LIMIT exceptions. 5244 5245Fixed a problem in the ToHexString operator to allow a maximum 200 character 5246string to be produced. 5247 5248Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5249routine where the length of the resulting buffer was not truncated to the 5250new size (if the target buffer already existed). 5251 5252Code and Data Size: Current and previous core subsystem library sizes are 5253shown below. These are the code and data sizes for the acpica.lib produced 5254by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5255any ACPI driver or OSPM code. The debug version of the code includes the 5256debug output trace mechanism and has a much larger code and data size. Note 5257that these values will vary depending on the efficiency of the compiler and 5258the compiler options used during generation. 5259 5260 Previous Release: 5261 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5262 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5263 Current Release: 5264 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5265 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5266 5267 52682) iASL Compiler/Disassembler: 5269 5270Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5271ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5272Includes support in the disassembler. 5273 5274Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5275AccessSize. 5276 5277Fixed a problem where the _HE resource name for the Interrupt macro was 5278referencing bit 0 instead of bit 1. 5279 5280Implemented check for maximum 255 interrupts in the Interrupt macro. 5281 5282Fixed a problem with the predefined resource descriptor names where 5283incorrect AML code was generated if the offset within the resource buffer 5284was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5285but did not update the surrounding package lengths. 5286 5287Changes to the Dma macro: All channels within the channel list must be in 5288the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5289optional (default is BusMaster). 5290 5291Implemented check for maximum 7 data bytes for the VendorShort macro. 5292 5293The ReadWrite parameter is now optional for the Memory32 and similar macros. 5294 5295---------------------------------------- 529603 December 2004. Summary of changes for version 20041203: 5297 52981) ACPI CA Core Subsystem: 5299 5300The low-level field insertion/extraction code (exfldio) has been completely 5301rewritten to eliminate unnecessary complexity, bugs, and boundary 5302conditions. 5303 5304Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5305operators where the input operand could be inadvertently deleted if no 5306conversion was necessary (e.g., if the input to ToInteger was an Integer 5307object.) 5308 5309Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5310exception code was returned if the resulting string would be > 200 chars. 5311AE_STRING_LIMIT is now returned. 5312 5313Fixed a problem with the Concatenate operator where AE_OK was always 5314returned, even if the operation failed. 5315 5316Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5317semaphores to be allocated. 5318 5319Code and Data Size: Current and previous core subsystem library sizes are 5320shown below. These are the code and data sizes for the acpica.lib produced 5321by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5322any ACPI driver or OSPM code. The debug version of the code includes the 5323debug output trace mechanism and has a much larger code and data size. Note 5324that these values will vary depending on the efficiency of the compiler and 5325the compiler options used during generation. 5326 5327 Previous Release: 5328 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5329 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5330 Current Release: 5331 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5332 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5333 5334 53352) iASL Compiler/Disassembler: 5336 5337Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5338recently introduced in 20041119. 5339 5340Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5341byte was inadvertently set to zero. 5342 5343---------------------------------------- 534419 November 2004. Summary of changes for version 20041119: 5345 53461) ACPI CA Core Subsystem: 5347 5348Fixed a problem in the internal ConvertToInteger routine where new integers 5349were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5350buffers and strings to integers. 5351 5352Implemented support to store a value to an Index() on a String object. This 5353is an ACPI 2.0 feature that had not yet been implemented. 5354 5355Implemented new behavior for storing objects to individual package elements 5356(via the Index() operator). The previous behavior was to invoke the implicit 5357conversion rules if an object was already present at the index. The new 5358behavior is to simply delete any existing object and directly store the new 5359object. Although the ACPI specification seems unclear on this subject, other 5360ACPI implementations behave in this manner. (This is the root of the 5361AE_BAD_HEX_CONSTANT issue.) 5362 5363Modified the RSDP memory scan mechanism to support the extended checksum for 5364ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5365RSDP signature is found with a valid checksum. 5366 5367Code and Data Size: Current and previous core subsystem library sizes are 5368shown below. These are the code and data sizes for the acpica.lib produced 5369by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5370any ACPI driver or OSPM code. The debug version of the code includes the 5371debug output trace mechanism and has a much larger code and data size. Note 5372that these values will vary depending on the efficiency of the compiler and 5373the compiler options used during generation. 5374 5375 Previous Release: 5376 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5377 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5378 Current Release: 5379 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5380 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5381 5382 53832) iASL Compiler/Disassembler: 5384 5385Fixed a missing semicolon in the aslcompiler.y file. 5386 5387---------------------------------------- 538805 November 2004. Summary of changes for version 20041105: 5389 53901) ACPI CA Core Subsystem: 5391 5392Implemented support for FADT revision 2. This was an interim table (between 5393ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5394 5395Implemented optional support to allow uninitialized LocalX and ArgX 5396variables in a control method. The variables are initialized to an Integer 5397object with a value of zero. This support is enabled by setting the 5398AcpiGbl_EnableInterpreterSlack flag to TRUE. 5399 5400Implemented support for Integer objects for the SizeOf operator. Either 4 5401or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5402depending on the parent table revision). 5403 5404Fixed a problem in the implementation of the SizeOf and ObjectType operators 5405where the operand was resolved to a value too early, causing incorrect 5406return values for some objects. 5407 5408Fixed some possible memory leaks during exceptional conditions. 5409 5410Code and Data Size: Current and previous core subsystem library sizes are 5411shown below. These are the code and data sizes for the acpica.lib produced 5412by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5413any ACPI driver or OSPM code. The debug version of the code includes the 5414debug output trace mechanism and has a much larger code and data size. Note 5415that these values will vary depending on the efficiency of the compiler and 5416the compiler options used during generation. 5417 5418 Previous Release: 5419 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5420 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5421 Current Release: 5422 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5423 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5424 5425 54262) iASL Compiler/Disassembler: 5427 5428Implemented support for all ACPI 3.0 reserved names and methods. 5429 5430Implemented all ACPI 3.0 grammar elements in the front-end, including 5431support for semicolons. 5432 5433Implemented the ACPI 3.0 Function() and ToUUID() macros 5434 5435Fixed a problem in the disassembler where a Scope() operator would not be 5436emitted properly if the target of the scope was in another table. 5437 5438---------------------------------------- 543915 October 2004. Summary of changes for version 20041015: 5440 5441Note: ACPI CA is currently undergoing an in-depth and complete formal 5442evaluation to test/verify the following areas. Other suggestions are 5443welcome. This will result in an increase in the frequency of releases and 5444the number of bug fixes in the next few months. 5445 - Functional tests for all ASL/AML operators 5446 - All implicit/explicit type conversions 5447 - Bit fields and operation regions 5448 - 64-bit math support and 32-bit-only "truncated" math support 5449 - Exceptional conditions, both compiler and interpreter 5450 - Dynamic object deletion and memory leaks 5451 - ACPI 3.0 support when implemented 5452 - External interfaces to the ACPI subsystem 5453 5454 54551) ACPI CA Core Subsystem: 5456 5457Fixed two alignment issues on 64-bit platforms - within debug statements in 5458AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5459field within the non-aligned ACPI generic address structure. 5460 5461Fixed a problem in the Increment and Decrement operators where incorrect 5462operand resolution could result in the inadvertent modification of the 5463original integer when the integer is passed into another method as an 5464argument and the arg is then incremented/decremented. 5465 5466Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5467BCD number were truncated during conversion. 5468 5469Fixed a problem in the ToDecimal operator where the length of the resulting 5470string could be set incorrectly too long if the input operand was a Buffer 5471object. 5472 5473Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5474within a buffer would prematurely terminate a compare between buffer 5475objects. 5476 5477Added a check for string overflow (>200 characters as per the ACPI 5478specification) during the Concatenate operator with two string operands. 5479 5480Code and Data Size: Current and previous core subsystem library sizes are 5481shown below. These are the code and data sizes for the acpica.lib produced 5482by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5483any ACPI driver or OSPM code. The debug version of the code includes the 5484debug output trace mechanism and has a much larger code and data size. Note 5485that these values will vary depending on the efficiency of the compiler and 5486the compiler options used during generation. 5487 5488 Previous Release: 5489 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5490 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5491 Current Release: 5492 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5493 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5494 5495 5496 54972) iASL Compiler/Disassembler: 5498 5499Allow the use of the ObjectType operator on uninitialized Locals and Args 5500(returns 0 as per the ACPI specification). 5501 5502Fixed a problem where the compiler would fault if there was a syntax error 5503in the FieldName of all of the various CreateXXXField operators. 5504 5505Disallow the use of lower case letters within the EISAID macro, as per the 5506ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5507U is an uppercase letter and N is a hex digit. 5508 5509 5510---------------------------------------- 551106 October 2004. Summary of changes for version 20041006: 5512 55131) ACPI CA Core Subsystem: 5514 5515Implemented support for the ACPI 3.0 Timer operator. This ASL function 5516implements a 64-bit timer with 100 nanosecond granularity. 5517 5518Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5519implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5520the timer with the best clock available. Also, it keeps the core subsystem 5521out of the clock handling business, since the host OS (usually) performs 5522this function. 5523 5524Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5525functions use a 64-bit address which is part of the packed ACPI Generic 5526Address Structure. Since the structure is non-aligned, the alignment macros 5527are now used to extract the address to a local variable before use. 5528 5529Fixed a problem where the ToInteger operator assumed all input strings were 5530hexadecimal. The operator now handles both decimal strings and hex strings 5531(prefixed with "0x"). 5532 5533Fixed a problem where the string length in the string object created as a 5534result of the internal ConvertToString procedure could be incorrect. This 5535potentially affected all implicit conversions and also the ToDecimalString 5536and ToHexString operators. 5537 5538Fixed two problems in the ToString operator. If the length parameter was 5539zero, an incorrect string object was created and the value of the input 5540length parameter was inadvertently changed from zero to Ones. 5541 5542Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5543resource macro was ignored. 5544 5545Simplified the interfaces to the internal division functions, reducing code 5546size and complexity. 5547 5548Code and Data Size: Current and previous core subsystem library sizes are 5549shown below. These are the code and data sizes for the acpica.lib produced 5550by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5551any ACPI driver or OSPM code. The debug version of the code includes the 5552debug output trace mechanism and has a much larger code and data size. Note 5553that these values will vary depending on the efficiency of the compiler and 5554the compiler options used during generation. 5555 5556 Previous Release: 5557 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5558 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5559 Current Release: 5560 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5561 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5562 5563 55642) iASL Compiler/Disassembler: 5565 5566Implemented support for the ACPI 3.0 Timer operator. 5567 5568Fixed a problem where the Default() operator was inadvertently ignored in a 5569Switch/Case block. This was a problem in the translation of the Switch 5570statement to If...Else pairs. 5571 5572Added support to allow a standalone Return operator, with no parentheses (or 5573operands). 5574 5575Fixed a problem with code generation for the ElseIf operator where the 5576translated Else...If parse tree was improperly constructed leading to the 5577loss of some code. 5578 5579---------------------------------------- 558022 September 2004. Summary of changes for version 20040922: 5581 55821) ACPI CA Core Subsystem: 5583 5584Fixed a problem with the implementation of the LNot() operator where "Ones" 5585was not returned for the TRUE case. Changed the code to return Ones instead 5586of (!Arg) which was usually 1. This change affects iASL constant folding for 5587this operator also. 5588 5589Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5590initialized properly -- Now zero the entire buffer in this case where the 5591buffer already exists. 5592 5593Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5594Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5595related code considerably. This will require changes/updates to all OS 5596interface layers (OSLs.) 5597 5598Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5599a system exception handler to be installed. This handler is invoked upon any 5600run-time exception that occurs during control method execution. 5601 5602Added support for the DSDT in AcpiTbFindTable. This allows the 5603DataTableRegion() operator to access the local copy of the DSDT. 5604 5605Code and Data Size: Current and previous core subsystem library sizes are 5606shown below. These are the code and data sizes for the acpica.lib produced 5607by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5608any ACPI driver or OSPM code. The debug version of the code includes the 5609debug output trace mechanism and has a much larger code and data size. Note 5610that these values will vary depending on the efficiency of the compiler and 5611the compiler options used during generation. 5612 5613 Previous Release: 5614 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5615 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5616 Current Release: 5617 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5618 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5619 5620 56212) iASL Compiler/Disassembler: 5622 5623Fixed a problem with constant folding and the LNot operator. LNot was 5624returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5625could result in the generation of an incorrect folded/reduced constant. 5626 5627End-Of-File is now allowed within a "//"-style comment. A parse error no 5628longer occurs if such a comment is at the very end of the input ASL source 5629file. 5630 5631Implemented the "-r" option to override the Revision in the table header. 5632The initial use of this option will be to simplify the evaluation of the AML 5633interpreter by allowing a single ASL source module to be compiled for either 563432-bit or 64-bit integers. 5635 5636 5637---------------------------------------- 563827 August 2004. Summary of changes for version 20040827: 5639 56401) ACPI CA Core Subsystem: 5641 5642- Implemented support for implicit object conversion in the non-numeric 5643logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5644LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5645the second operand is implicitly converted on the fly to match the type of 5646the first operand. For example: 5647 5648 LEqual (Source1, Source2) 5649 5650Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5651The data type of Source1 dictates the required type of Source2. Source2 is 5652implicitly converted if necessary to match the type of Source1. 5653 5654- Updated and corrected the behavior of the string conversion support. The 5655rules concerning conversion of buffers to strings (according to the ACPI 5656specification) are as follows: 5657 5658ToDecimalString - explicit byte-wise conversion of buffer to string of 5659decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5660conversion of buffer to string of hex values (0-FF) separated by commas. 5661ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5662copy with no transform except NULL terminated. Any other implicit buffer-to- 5663string conversion - byte-wise conversion of buffer to string of hex values 5664(0-FF) separated by spaces. 5665 5666- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5667 5668- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5669one byte too short in the case of a node in the root scope. This could 5670cause a fault during debug output. 5671 5672- Code and Data Size: Current and previous core subsystem library sizes are 5673shown below. These are the code and data sizes for the acpica.lib produced 5674by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5675any ACPI driver or OSPM code. The debug version of the code includes the 5676debug output trace mechanism and has a much larger code and data size. Note 5677that these values will vary depending on the efficiency of the compiler and 5678the compiler options used during generation. 5679 5680 Previous Release: 5681 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5682 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5683 Current Release: 5684 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5685 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5686 5687 56882) iASL Compiler/Disassembler: 5689 5690- Fixed a Linux generation error. 5691 5692 5693---------------------------------------- 569416 August 2004. Summary of changes for version 20040816: 5695 56961) ACPI CA Core Subsystem: 5697 5698Designed and implemented support within the AML interpreter for the so- 5699called "implicit return". This support returns the result of the last ASL 5700operation within a control method, in the absence of an explicit Return() 5701operator. A few machines depend on this behavior, even though it is not 5702explicitly supported by the ASL language. It is optional support that can 5703be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5704 5705Removed support for the PCI_Config address space from the internal low level 5706hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5707support was not used internally, and would not work correctly anyway because 5708the PCI bus number and segment number were not supported. There are 5709separate interfaces for PCI configuration space access because of the unique 5710interface. 5711 5712Code and Data Size: Current and previous core subsystem library sizes are 5713shown below. These are the code and data sizes for the acpica.lib produced 5714by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5715any ACPI driver or OSPM code. The debug version of the code includes the 5716debug output trace mechanism and has a much larger code and data size. Note 5717that these values will vary depending on the efficiency of the compiler and 5718the compiler options used during generation. 5719 5720 Previous Release: 5721 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5722 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5723 Current Release: 5724 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5725 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5726 5727 57282) iASL Compiler/Disassembler: 5729 5730Fixed a problem where constants in ASL expressions at the root level (not 5731within a control method) could be inadvertently truncated during code 5732generation. This problem was introduced in the 20040715 release. 5733 5734 5735---------------------------------------- 573615 July 2004. Summary of changes for version 20040715: 5737 57381) ACPI CA Core Subsystem: 5739 5740Restructured the internal HW GPE interfaces to pass/track the current state 5741of interrupts (enabled/disabled) in order to avoid possible deadlock and 5742increase flexibility of the interfaces. 5743 5744Implemented a "lexicographical compare" for String and Buffer objects within 5745the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5746as per further clarification to the ACPI specification. Behavior is similar 5747to C library "strcmp". 5748 5749Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5750external function. In the 32-bit non-debug case, the stack use has been 5751reduced from 168 bytes to 32 bytes. 5752 5753Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5754whose purpose is to allow the AML interpreter to forgive certain bad AML 5755constructs. Default setting is FALSE. 5756 5757Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5758support code. If enabled, it allows field access to go beyond the end of a 5759region definition if the field is within the region length rounded up to the 5760next access width boundary (a common coding error.) 5761 5762Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5763ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5764symbols are lowercased by the latest version of the AcpiSrc tool. 5765 5766The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5767rename "Register" to simply "Reg" to prevent certain compilers from 5768complaining. 5769 5770Code and Data Size: Current and previous core subsystem library sizes are 5771shown below. These are the code and data sizes for the acpica.lib produced 5772by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5773any ACPI driver or OSPM code. The debug version of the code includes the 5774debug output trace mechanism and has a much larger code and data size. Note 5775that these values will vary depending on the efficiency of the compiler and 5776the compiler options used during generation. 5777 5778 Previous Release: 5779 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5780 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5781 Current Release: 5782 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5783 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5784 5785 57862) iASL Compiler/Disassembler: 5787 5788Implemented full support for Package objects within the Case() operator. 5789Note: The Break() operator is currently not supported within Case blocks 5790(TermLists) as there is some question about backward compatibility with ACPI 57911.0 interpreters. 5792 5793 5794Fixed a problem where complex terms were not supported properly within the 5795Switch() operator. 5796 5797Eliminated extraneous warning for compiler-emitted reserved names of the 5798form "_T_x". (Used in Switch/Case operators.) 5799 5800Eliminated optimization messages for "_T_x" objects and small constants 5801within the DefinitionBlock operator. 5802 5803 5804---------------------------------------- 580515 June 2004. Summary of changes for version 20040615: 5806 58071) ACPI CA Core Subsystem: 5808 5809Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5810following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5811LLessEqual. 5812 5813All directory names in the entire source package are lower case, as they 5814were in earlier releases. 5815 5816Implemented "Disassemble" command in the AML debugger that will disassemble 5817a single control method. 5818 5819Code and Data Size: Current and previous core subsystem library sizes are 5820shown below. These are the code and data sizes for the acpica.lib produced 5821by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5822any ACPI driver or OSPM code. The debug version of the code includes the 5823debug output trace mechanism and has a much larger code and data size. Note 5824that these values will vary depending on the efficiency of the compiler and 5825the compiler options used during generation. 5826 5827 Previous Release: 5828 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5829 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5830 5831 Current Release: 5832 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5833 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5834 5835 58362) iASL Compiler/Disassembler: 5837 5838Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5839following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5840LLessEqual. 5841 5842All directory names in the entire source package are lower case, as they 5843were in earlier releases. 5844 5845Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5846not found. 5847 5848Fixed an issue with the Windows version of the compiler where later versions 5849of Windows place the FADT in the registry under the name "FADT" and not 5850"FACP" as earlier versions did. This applies when using the -g or - 5851d<nofilename> options. The compiler now looks for both strings as 5852necessary. 5853 5854Fixed a problem with compiler namepath optimization where a namepath within 5855the Scope() operator could not be optimized if the namepath was a subpath of 5856the current scope path. 5857 5858---------------------------------------- 585927 May 2004. Summary of changes for version 20040527: 5860 58611) ACPI CA Core Subsystem: 5862 5863Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5864support in the RSDP scan code. The original code improperly scanned for the 5865EBDA by simply scanning from memory location 0 to 0x400. The correct method 5866is to first obtain the EBDA pointer from within the BIOS data area, then 5867scan 1K of memory starting at the EBDA pointer. There appear to be few if 5868any machines that place the RSDP in the EBDA, however. 5869 5870Integrated a fix for a possible fault during evaluation of BufferField 5871arguments. Obsolete code that was causing the problem was removed. 5872 5873Found and fixed a problem in the Field Support Code where data could be 5874corrupted on a bit field read that starts on an aligned boundary but does 5875not end on an aligned boundary. Merged the read/write "datum length" 5876calculation code into a common procedure. 5877 5878Rolled in a couple of changes to the FreeBSD-specific header. 5879 5880 5881Code and Data Size: Current and previous core subsystem library sizes are 5882shown below. These are the code and data sizes for the acpica.lib produced 5883by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5884any ACPI driver or OSPM code. The debug version of the code includes the 5885debug output trace mechanism and has a much larger code and data size. Note 5886that these values will vary depending on the efficiency of the compiler and 5887the compiler options used during generation. 5888 5889 Previous Release: 5890 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5891 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5892 Current Release: 5893 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5894 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5895 5896 58972) iASL Compiler/Disassembler: 5898 5899Fixed a generation warning produced by some overly-verbose compilers for a 590064-bit constant. 5901 5902---------------------------------------- 590314 May 2004. Summary of changes for version 20040514: 5904 59051) ACPI CA Core Subsystem: 5906 5907Fixed a problem where hardware GPE enable bits sometimes not set properly 5908during and after GPE method execution. Result of 04/27 changes. 5909 5910Removed extra "clear all GPEs" when sleeping/waking. 5911 5912Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5913AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5914the new AcpiEv* calls as appropriate. 5915 5916ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5917now "Microsoft Windows NT" for maximum compatibility. However this can be 5918changed by modifying the acconfig.h file. 5919 5920Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5921traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5922 5923Run _INI methods on ThermalZone objects. This is against the ACPI 5924specification, but there is apparently ASL code in the field that has these 5925_INI methods, and apparently "other" AML interpreters execute them. 5926 5927Performed a full 16/32/64 bit lint that resulted in some small changes. 5928 5929Added a sleep simulation command to the AML debugger to test sleep code. 5930 5931Code and Data Size: Current and previous core subsystem library sizes are 5932shown below. These are the code and data sizes for the acpica.lib produced 5933by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5934any ACPI driver or OSPM code. The debug version of the code includes the 5935debug output trace mechanism and has a much larger code and data size. Note 5936that these values will vary depending on the efficiency of the compiler and 5937the compiler options used during generation. 5938 5939 Previous Release: 5940 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5941 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5942 Current Release: 5943 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5944 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5945 5946---------------------------------------- 594727 April 2004. Summary of changes for version 20040427: 5948 59491) ACPI CA Core Subsystem: 5950 5951Completed a major overhaul of the GPE handling within ACPI CA. There are 5952now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5953The only GPEs allowed to be combination wake/run are for button-style 5954devices such as a control-method power button, control-method sleep button, 5955or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5956referenced by any _PRW methods are marked for "runtime" and hardware 5957enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5958(and disabled at runtime). However, at sleep time, only those GPEs that 5959have been specifically enabled for wake via the AcpiEnableGpe interface will 5960actually be hardware enabled. 5961 5962A new external interface has been added, AcpiSetGpeType(), that is meant to 5963be used by device drivers to force a GPE to a particular type. It will be 5964especially useful for the drivers for the button devices mentioned above. 5965 5966Completed restructuring of the ACPI CA initialization sequence so that 5967default operation region handlers are installed before GPEs are initialized 5968and the _PRW methods are executed. This will prevent errors when the _PRW 5969methods attempt to access system memory or I/O space. 5970 5971GPE enable/disable no longer reads the GPE enable register. We now keep the 5972enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5973thus no longer depend on the hardware to maintain these bits. 5974 5975Always clear the wake status and fixed/GPE status bits before sleep, even 5976for state S5. 5977 5978Improved the AML debugger output for displaying the GPE blocks and their 5979current status. 5980 5981Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5982x = 0,1,2,3,4. 5983 5984Fixed a problem where the physical address was incorrectly calculated when 5985the Load() operator was used to directly load from an Operation Region (vs. 5986loading from a Field object.) Also added check for minimum table length for 5987this case. 5988 5989Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5990mutex release. 5991 5992Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5993consistency with the other fields returned. 5994 5995Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5996structure for each GPE in the system, so the size of this structure is 5997important. 5998 5999CPU stack requirement reduction: Cleaned up the method execution and object 6000evaluation paths so that now a parameter structure is passed, instead of 6001copying the various method parameters over and over again. 6002 6003In evregion.c: Correctly exit and reenter the interpreter region if and 6004only if dispatching an operation region request to a user-installed handler. 6005Do not exit/reenter when dispatching to a default handler (e.g., default 6006system memory or I/O handlers) 6007 6008 6009Notes for updating drivers for the new GPE support. The following changes 6010must be made to ACPI-related device drivers that are attached to one or more 6011GPEs: (This information will be added to the ACPI CA Programmer Reference.) 6012 60131) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 6014explicitly call AcpiEnableGpe. 60152) There is a new interface called AcpiSetGpeType. This should be called 6016before enabling the GPE. Also, this interface will automatically disable 6017the GPE if it is currently enabled. 60183) AcpiEnableGpe no longer supports a GPE type flag. 6019 6020Specific drivers that must be changed: 60211) EC driver: 6022 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 6023AeGpeHandler, NULL); 6024 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 6025 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 6026 60272) Button Drivers (Power, Lid, Sleep): 6028Run _PRW method under parent device 6029If _PRW exists: /* This is a control-method button */ 6030 Extract GPE number and possibly GpeDevice 6031 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 6032 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 6033 6034For all other devices that have _PRWs, we automatically set the GPE type to 6035ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 6036must be done on a selective basis, usually requiring some kind of user app 6037to allow the user to pick the wake devices. 6038 6039 6040Code and Data Size: Current and previous core subsystem library sizes are 6041shown below. These are the code and data sizes for the acpica.lib produced 6042by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6043any ACPI driver or OSPM code. The debug version of the code includes the 6044debug output trace mechanism and has a much larger code and data size. Note 6045that these values will vary depending on the efficiency of the compiler and 6046the compiler options used during generation. 6047 6048 Previous Release: 6049 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6050 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6051 Current Release: 6052 6053 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 6054 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 6055 6056 6057 6058---------------------------------------- 605902 April 2004. Summary of changes for version 20040402: 6060 60611) ACPI CA Core Subsystem: 6062 6063Fixed an interpreter problem where an indirect store through an ArgX 6064parameter was incorrectly applying the "implicit conversion rules" during 6065the store. From the ACPI specification: "If the target is a method local or 6066argument (LocalX or ArgX), no conversion is performed and the result is 6067stored directly to the target". The new behavior is to disable implicit 6068conversion during ALL stores to an ArgX. 6069 6070Changed the behavior of the _PRW method scan to ignore any and all errors 6071returned by a given _PRW. This prevents the scan from aborting from the 6072failure of any single _PRW. 6073 6074Moved the runtime configuration parameters from the global init procedure to 6075static variables in acglobal.h. This will allow the host to override the 6076default values easily. 6077 6078Code and Data Size: Current and previous core subsystem library sizes are 6079shown below. These are the code and data sizes for the acpica.lib produced 6080by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6081any ACPI driver or OSPM code. The debug version of the code includes the 6082debug output trace mechanism and has a much larger code and data size. Note 6083that these values will vary depending on the efficiency of the compiler and 6084the compiler options used during generation. 6085 6086 Previous Release: 6087 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6088 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6089 Current Release: 6090 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6091 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6092 6093 60942) iASL Compiler/Disassembler: 6095 6096iASL now fully disassembles SSDTs. However, External() statements are not 6097generated automatically for unresolved symbols at this time. This is a 6098planned feature for future implementation. 6099 6100Fixed a scoping problem in the disassembler that occurs when the type of the 6101target of a Scope() operator is overridden. This problem caused an 6102incorrectly nested internal namespace to be constructed. 6103 6104Any warnings or errors that are emitted during disassembly are now commented 6105out automatically so that the resulting file can be recompiled without any 6106hand editing. 6107 6108---------------------------------------- 610926 March 2004. Summary of changes for version 20040326: 6110 61111) ACPI CA Core Subsystem: 6112 6113Implemented support for "wake" GPEs via interaction between GPEs and the 6114_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6115identified as a WAKE GPE and by default will no longer be enabled at 6116runtime. Previously, we were blindly enabling all GPEs with a corresponding 6117_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6118believe this has been the cause of thousands of "spurious" GPEs on some 6119systems. 6120 6121This new GPE behavior is can be reverted to the original behavior (enable 6122ALL GPEs at runtime) via a runtime flag. 6123 6124Fixed a problem where aliased control methods could not access objects 6125properly. The proper scope within the namespace was not initialized 6126(transferred to the target of the aliased method) before executing the 6127target method. 6128 6129Fixed a potential race condition on internal object deletion on the return 6130object in AcpiEvaluateObject. 6131 6132Integrated a fix for resource descriptors where both _MEM and _MTP were 6133being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6134wide, 0x0F instead of 0x03.) 6135 6136Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6137fault in some cases. 6138 6139Updated Notify() values for debug statements in evmisc.c 6140 6141Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6142 6143Code and Data Size: Current and previous core subsystem library sizes are 6144shown below. These are the code and data sizes for the acpica.lib produced 6145by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6146any ACPI driver or OSPM code. The debug version of the code includes the 6147debug output trace mechanism and has a much larger code and data size. Note 6148that these values will vary depending on the efficiency of the compiler and 6149the compiler options used during generation. 6150 6151 Previous Release: 6152 6153 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6154 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6155 Current Release: 6156 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6157 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6158 6159---------------------------------------- 616011 March 2004. Summary of changes for version 20040311: 6161 61621) ACPI CA Core Subsystem: 6163 6164Fixed a problem where errors occurring during the parse phase of control 6165method execution did not abort cleanly. For example, objects created and 6166installed in the namespace were not deleted. This caused all subsequent 6167invocations of the method to return the AE_ALREADY_EXISTS exception. 6168 6169Implemented a mechanism to force a control method to "Serialized" execution 6170if the method attempts to create namespace objects. (The root of the 6171AE_ALREADY_EXISTS problem.) 6172 6173Implemented support for the predefined _OSI "internal" control method. 6174Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6175"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6176This feature will allow "other" operating systems to execute the fully 6177tested, "Windows" code path through the ASL code 6178 6179Global Lock Support: Now allows multiple acquires and releases with any 6180internal thread. Removed concept of "owning thread" for this special mutex. 6181 6182Fixed two functions that were inappropriately declaring large objects on the 6183CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6184method execution considerably. 6185 6186Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6187S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6188 6189Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6190defined on the machine. 6191 6192Implemented two runtime options: One to force all control method execution 6193to "Serialized" to mimic Windows behavior, another to disable _OSI support 6194if it causes problems on a given machine. 6195 6196Code and Data Size: Current and previous core subsystem library sizes are 6197shown below. These are the code and data sizes for the acpica.lib produced 6198by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6199any ACPI driver or OSPM code. The debug version of the code includes the 6200debug output trace mechanism and has a much larger code and data size. Note 6201that these values will vary depending on the efficiency of the compiler and 6202the compiler options used during generation. 6203 6204 Previous Release: 6205 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6206 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6207 Current Release: 6208 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6209 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6210 62112) iASL Compiler/Disassembler: 6212 6213Fixed an array size problem for FreeBSD that would cause the compiler to 6214fault. 6215 6216---------------------------------------- 621720 February 2004. Summary of changes for version 20040220: 6218 6219 62201) ACPI CA Core Subsystem: 6221 6222Implemented execution of _SxD methods for Device objects in the 6223GetObjectInfo interface. 6224 6225Fixed calls to _SST method to pass the correct arguments. 6226 6227Added a call to _SST on wake to restore to "working" state. 6228 6229Check for End-Of-Buffer failure case in the WalkResources interface. 6230 6231Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6232structures to the beginning of the file. 6233 6234After wake, clear GPE status register(s) before enabling GPEs. 6235 6236After wake, clear/enable power button. (Perhaps we should clear/enable all 6237fixed events upon wake.) 6238 6239Fixed a couple of possible memory leaks in the Namespace manager. 6240 6241Integrated latest acnetbsd.h file. 6242 6243---------------------------------------- 624411 February 2004. Summary of changes for version 20040211: 6245 6246 62471) ACPI CA Core Subsystem: 6248 6249Completed investigation and implementation of the call-by-reference 6250mechanism for control method arguments. 6251 6252Fixed a problem where a store of an object into an indexed package could 6253fail if the store occurs within a different method than the method that 6254created the package. 6255 6256Fixed a problem where the ToDecimal operator could return incorrect results. 6257 6258Fixed a problem where the CopyObject operator could fail on some of the more 6259obscure objects (e.g., Reference objects.) 6260 6261Improved the output of the Debug object to display buffer, package, and 6262index objects. 6263 6264Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6265the expected result. 6266 6267Added permanent ACPI_REPORT_ERROR macros for all instances of the 6268ACPI_AML_INTERNAL exception. 6269 6270Integrated latest version of acfreebsd.h 6271 6272---------------------------------------- 627316 January 2004. Summary of changes for version 20040116: 6274 6275The purpose of this release is primarily to update the copyright years in 6276each module, thus causing a huge number of diffs. There are a few small 6277functional changes, however. 6278 62791) ACPI CA Core Subsystem: 6280 6281Improved error messages when there is a problem finding one or more of the 6282required base ACPI tables 6283 6284Reintroduced the definition of APIC_HEADER in actbl.h 6285 6286Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6287 6288Removed extraneous reference to NewObj in dsmthdat.c 6289 62902) iASL compiler 6291 6292Fixed a problem introduced in December that disabled the correct disassembly 6293of Resource Templates 6294 6295 6296---------------------------------------- 629703 December 2003. Summary of changes for version 20031203: 6298 62991) ACPI CA Core Subsystem: 6300 6301Changed the initialization of Operation Regions during subsystem 6302init to perform two entire walks of the ACPI namespace; The first 6303to initialize the regions themselves, the second to execute the 6304_REG methods. This fixed some interdependencies across _REG 6305methods found on some machines. 6306 6307Fixed a problem where a Store(Local0, Local1) could simply update 6308the object reference count, and not create a new copy of the 6309object if the Local1 is uninitialized. 6310 6311Implemented support for the _SST reserved method during sleep 6312transitions. 6313 6314Implemented support to clear the SLP_TYP and SLP_EN bits when 6315waking up, this is apparently required by some machines. 6316 6317When sleeping, clear the wake status only if SleepState is not S5. 6318 6319Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6320pointer arithmetic advanced a string pointer too far. 6321 6322Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6323could be returned if the requested table has not been loaded. 6324 6325Within the support for IRQ resources, restructured the handling of 6326the active and edge/level bits. 6327 6328Fixed a few problems in AcpiPsxExecute() where memory could be 6329leaked under certain error conditions. 6330 6331Improved error messages for the cases where the ACPI mode could 6332not be entered. 6333 6334Code and Data Size: Current and previous core subsystem library 6335sizes are shown below. These are the code and data sizes for the 6336acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6337these values do not include any ACPI driver or OSPM code. The 6338debug version of the code includes the debug output trace 6339mechanism and has a much larger code and data size. Note that 6340these values will vary depending on the efficiency of the compiler 6341and the compiler options used during generation. 6342 6343 Previous Release (20031029): 6344 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6345 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6346 Current Release: 6347 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6348 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6349 63502) iASL Compiler/Disassembler: 6351 6352Implemented a fix for the iASL disassembler where a bad index was 6353generated. This was most noticeable on 64-bit platforms 6354 6355 6356---------------------------------------- 635729 October 2003. Summary of changes for version 20031029: 6358 63591) ACPI CA Core Subsystem: 6360 6361 6362Fixed a problem where a level-triggered GPE with an associated 6363_Lxx control method was incorrectly cleared twice. 6364 6365Fixed a problem with the Field support code where an access can 6366occur beyond the end-of-region if the field is non-aligned but 6367extends to the very end of the parent region (resulted in an 6368AE_AML_REGION_LIMIT exception.) 6369 6370Fixed a problem with ACPI Fixed Events where an RT Clock handler 6371would not get invoked on an RTC event. The RTC event bitmasks for 6372the PM1 registers were not being initialized properly. 6373 6374Implemented support for executing _STA and _INI methods for 6375Processor objects. Although this is currently not part of the 6376ACPI specification, there is existing ASL code that depends on the 6377init-time execution of these methods. 6378 6379Implemented and deployed a GetDescriptorName function to decode 6380the various types of internal descriptors. Guards against null 6381descriptors during debug output also. 6382 6383Implemented and deployed a GetNodeName function to extract the 4- 6384character namespace node name. This function simplifies the debug 6385and error output, as well as guarding against null pointers during 6386output. 6387 6388Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6389simplify the debug and error output of 64-bit integers. This 6390macro replaces the HIDWORD and LODWORD macros for dumping these 6391integers. 6392 6393Updated the implementation of the Stall() operator to only call 6394AcpiOsStall(), and also return an error if the operand is larger 6395than 255. This preserves the required behavior of not 6396relinquishing the processor, as would happen if AcpiOsSleep() was 6397called for "long stalls". 6398 6399Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6400initialized are now treated as NOOPs. 6401 6402Cleaned up a handful of warnings during 64-bit generation. 6403 6404Fixed a reported error where and incorrect GPE number was passed 6405to the GPE dispatch handler. This value is only used for error 6406output, however. Used this opportunity to clean up and streamline 6407the GPE dispatch code. 6408 6409Code and Data Size: Current and previous core subsystem library 6410sizes are shown below. These are the code and data sizes for the 6411acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6412these values do not include any ACPI driver or OSPM code. The 6413 6414debug version of the code includes the debug output trace 6415mechanism and has a much larger code and data size. Note that 6416these values will vary depending on the efficiency of the compiler 6417and the compiler options used during generation. 6418 6419 Previous Release (20031002): 6420 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6421 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6422 Current Release: 6423 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6424 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6425 6426 64272) iASL Compiler/Disassembler: 6428 6429Updated the iASL compiler to return an error if the operand to the 6430Stall() operator is larger than 255. 6431 6432 6433---------------------------------------- 643402 October 2003. Summary of changes for version 20031002: 6435 6436 64371) ACPI CA Core Subsystem: 6438 6439Fixed a problem with Index Fields where the index was not 6440incremented for fields that require multiple writes to the 6441index/data registers (Fields that are wider than the data 6442register.) 6443 6444Fixed a problem with all Field objects where a write could go 6445beyond the end-of-field if the field was larger than the access 6446granularity and therefore required multiple writes to complete the 6447request. An extra write beyond the end of the field could happen 6448inadvertently. 6449 6450Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6451would incorrectly be returned if the width of the Data Register 6452was larger than the specified field access width. 6453 6454Completed fixes for LoadTable() and Unload() and verified their 6455operation. Implemented full support for the "DdbHandle" object 6456throughout the ACPI CA subsystem. 6457 6458Implemented full support for the MADT and ECDT tables in the ACPI 6459CA header files. Even though these tables are not directly 6460consumed by ACPI CA, the header definitions are useful for ACPI 6461device drivers. 6462 6463Integrated resource descriptor fixes posted to the Linux ACPI 6464list. This included checks for minimum descriptor length, and 6465support for trailing NULL strings within descriptors that have 6466optional string elements. 6467 6468Code and Data Size: Current and previous core subsystem library 6469sizes are shown below. These are the code and data sizes for the 6470acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6471these values do not include any ACPI driver or OSPM code. The 6472debug version of the code includes the debug output trace 6473mechanism and has a much larger code and data size. Note that 6474these values will vary depending on the efficiency of the compiler 6475and the compiler options used during generation. 6476 6477 Previous Release (20030918): 6478 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6479 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6480 Current Release: 6481 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6482 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6483 6484 64852) iASL Compiler: 6486 6487Implemented detection of non-ASCII characters within the input 6488source ASL file. This catches attempts to compile binary (AML) 6489files early in the compile, with an informative error message. 6490 6491Fixed a problem where the disassembler would fault if the output 6492filename could not be generated or if the output file could not be 6493opened. 6494 6495---------------------------------------- 649618 September 2003. Summary of changes for version 20030918: 6497 6498 64991) ACPI CA Core Subsystem: 6500 6501Found and fixed a longstanding problem with the late execution of 6502the various deferred AML opcodes (such as Operation Regions, 6503Buffer Fields, Buffers, and Packages). If the name string 6504specified for the name of the new object placed the object in a 6505scope other than the current scope, the initialization/execution 6506of the opcode failed. The solution to this problem was to 6507implement a mechanism where the late execution of such opcodes 6508does not attempt to lookup/create the name a second time in an 6509incorrect scope. This fixes the "region size computed 6510incorrectly" problem. 6511 6512Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6513Global Lock AE_BAD_PARAMETER error. 6514 6515Fixed several 64-bit issues with prototypes, casting and data 6516types. 6517 6518Removed duplicate prototype from acdisasm.h 6519 6520Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6521 6522Code and Data Size: Current and previous core subsystem library 6523sizes are shown below. These are the code and data sizes for the 6524acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6525these values do not include any ACPI driver or OSPM code. The 6526debug version of the code includes the debug output trace 6527mechanism and has a much larger code and data size. Note that 6528these values will vary depending on the efficiency of the compiler 6529and the compiler options used during generation. 6530 6531 Previous Release: 6532 6533 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6534 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6535 Current Release: 6536 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6537 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6538 6539 65402) Linux: 6541 6542Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6543correct sleep time in seconds. 6544 6545---------------------------------------- 654614 July 2003. Summary of changes for version 20030619: 6547 65481) ACPI CA Core Subsystem: 6549 6550Parse SSDTs in order discovered, as opposed to reverse order 6551(Hrvoje Habjanic) 6552 6553Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6554Klausner, 6555 Nate Lawson) 6556 6557 65582) Linux: 6559 6560Dynamically allocate SDT list (suggested by Andi Kleen) 6561 6562proc function return value cleanups (Andi Kleen) 6563 6564Correctly handle NMI watchdog during long stalls (Andrew Morton) 6565 6566Make it so acpismp=force works (reported by Andrew Morton) 6567 6568 6569---------------------------------------- 657019 June 2003. Summary of changes for version 20030619: 6571 65721) ACPI CA Core Subsystem: 6573 6574Fix To/FromBCD, eliminating the need for an arch-specific #define. 6575 6576Do not acquire a semaphore in the S5 shutdown path. 6577 6578Fix ex_digits_needed for 0. (Takayoshi Kochi) 6579 6580Fix sleep/stall code reversal. (Andi Kleen) 6581 6582Revert a change having to do with control method calling 6583semantics. 6584 65852) Linux: 6586 6587acpiphp update (Takayoshi Kochi) 6588 6589Export acpi_disabled for sonypi (Stelian Pop) 6590 6591Mention acpismp=force in config help 6592 6593Re-add acpitable.c and acpismp=force. This improves backwards 6594 6595compatibility and also cleans up the code to a significant degree. 6596 6597Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6598 6599---------------------------------------- 660022 May 2003. Summary of changes for version 20030522: 6601 66021) ACPI CA Core Subsystem: 6603 6604Found and fixed a reported problem where an AE_NOT_FOUND error 6605occurred occasionally during _BST evaluation. This turned out to 6606be an Owner ID allocation issue where a called method did not get 6607a new ID assigned to it. Eventually, (after 64k calls), the Owner 6608ID UINT16 would wraparound so that the ID would be the same as the 6609caller's and the called method would delete the caller's 6610namespace. 6611 6612Implemented extended error reporting for control methods that are 6613aborted due to a run-time exception. Output includes the exact 6614AML instruction that caused the method abort, a dump of the method 6615locals and arguments at the time of the abort, and a trace of all 6616nested control method calls. 6617 6618Modified the interpreter to allow the creation of buffers of zero 6619length from the AML code. Implemented new code to ensure that no 6620attempt is made to actually allocate a memory buffer (of length 6621zero) - instead, a simple buffer object with a NULL buffer pointer 6622and length zero is created. A warning is no longer issued when 6623the AML attempts to create a zero-length buffer. 6624 6625Implemented a workaround for the "leading asterisk issue" in 6626_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6627asterisk is automatically removed if present in any HID, UID, or 6628CID strings. The iASL compiler will still flag this asterisk as 6629an error, however. 6630 6631Implemented full support for _CID methods that return a package of 6632multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6633now additionally returns a device _CID list if present. This 6634required a change to the external interface in order to pass an 6635ACPI_BUFFER object as a parameter since the _CID list is of 6636variable length. 6637 6638Fixed a problem with the new AE_SAME_HANDLER exception where 6639handler initialization code did not know about this exception. 6640 6641Code and Data Size: Current and previous core subsystem library 6642sizes are shown below. These are the code and data sizes for the 6643acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6644these values do not include any ACPI driver or OSPM code. The 6645debug version of the code includes the debug output trace 6646mechanism and has a much larger code and data size. Note that 6647these values will vary depending on the efficiency of the compiler 6648and the compiler options used during generation. 6649 6650 Previous Release (20030509): 6651 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6652 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6653 Current Release: 6654 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6655 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6656 6657 66582) Linux: 6659 6660Fixed a bug in which we would reinitialize the ACPI interrupt 6661after it was already working, thus disabling all ACPI and the IRQs 6662for any other device sharing the interrupt. (Thanks to Stian 6663Jordet) 6664 6665Toshiba driver update (John Belmonte) 6666 6667Return only 0 or 1 for our interrupt handler status (Andrew 6668Morton) 6669 6670 66713) iASL Compiler: 6672 6673Fixed a reported problem where multiple (nested) ElseIf() 6674statements were not handled correctly by the compiler, resulting 6675in incorrect warnings and incorrect AML code. This was a problem 6676in both the ASL parser and the code generator. 6677 6678 66794) Documentation: 6680 6681Added changes to existing interfaces, new exception codes, and new 6682text concerning reference count object management versus garbage 6683collection. 6684 6685---------------------------------------- 668609 May 2003. Summary of changes for version 20030509. 6687 6688 66891) ACPI CA Core Subsystem: 6690 6691Changed the subsystem initialization sequence to hold off 6692installation of address space handlers until the hardware has been 6693initialized and the system has entered ACPI mode. This is because 6694the installation of space handlers can cause _REG methods to be 6695run. Previously, the _REG methods could potentially be run before 6696ACPI mode was enabled. 6697 6698Fixed some memory leak issues related to address space handler and 6699notify handler installation. There were some problems with the 6700reference count mechanism caused by the fact that the handler 6701objects are shared across several namespace objects. 6702 6703Fixed a reported problem where reference counts within the 6704namespace were not properly updated when named objects created by 6705method execution were deleted. 6706 6707Fixed a reported problem where multiple SSDTs caused a deletion 6708issue during subsystem termination. Restructured the table data 6709structures to simplify the linked lists and the related code. 6710 6711Fixed a problem where the table ID associated with secondary 6712tables (SSDTs) was not being propagated into the namespace objects 6713created by those tables. This would only present a problem for 6714tables that are unloaded at run-time, however. 6715 6716Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6717type as the length parameter (instead of UINT32). 6718 6719Solved a long-standing problem where an ALREADY_EXISTS error 6720appears on various systems. This problem could happen when there 6721are multiple PCI_Config operation regions under a single PCI root 6722bus. This doesn't happen very frequently, but there are some 6723systems that do this in the ASL. 6724 6725Fixed a reported problem where the internal DeleteNode function 6726was incorrectly handling the case where a namespace node was the 6727first in the parent's child list, and had additional peers (not 6728the only child, but first in the list of children.) 6729 6730Code and Data Size: Current core subsystem library sizes are shown 6731below. These are the code and data sizes for the acpica.lib 6732produced by the Microsoft Visual C++ 6.0 compiler, and these 6733values do not include any ACPI driver or OSPM code. The debug 6734version of the code includes the debug output trace mechanism and 6735has a much larger code and data size. Note that these values will 6736vary depending on the efficiency of the compiler and the compiler 6737options used during generation. 6738 6739 Previous Release 6740 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6741 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6742 Current Release: 6743 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6744 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6745 6746 67472) Linux: 6748 6749Allow ":" in OS override string (Ducrot Bruno) 6750 6751Kobject fix (Greg KH) 6752 6753 67543 iASL Compiler/Disassembler: 6755 6756Fixed a problem in the generation of the C source code files (AML 6757is emitted in C source statements for BIOS inclusion) where the 6758Ascii dump that appears within a C comment at the end of each line 6759could cause a compile time error if the AML sequence happens to 6760have an open comment or close comment sequence embedded. 6761 6762 6763---------------------------------------- 676424 April 2003. Summary of changes for version 20030424. 6765 6766 67671) ACPI CA Core Subsystem: 6768 6769Support for big-endian systems has been implemented. Most of the 6770support has been invisibly added behind big-endian versions of the 6771ACPI_MOVE_* macros. 6772 6773Fixed a problem in AcpiHwDisableGpeBlock() and 6774AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6775low level hardware write routine. The offset parameter was 6776actually eliminated from the low level read/write routines because 6777they had become obsolete. 6778 6779Fixed a problem where a handler object was deleted twice during 6780the removal of a fixed event handler. 6781 6782 67832) Linux: 6784 6785A fix for SMP systems with link devices was contributed by 6786 6787Compaq's Dan Zink. 6788 6789(2.5) Return whether we handled the interrupt in our IRQ handler. 6790(Linux ISRs no longer return void, so we can propagate the handler 6791return value from the ACPI CA core back to the OS.) 6792 6793 6794 67953) Documentation: 6796 6797The ACPI CA Programmer Reference has been updated to reflect new 6798interfaces and changes to existing interfaces. 6799 6800---------------------------------------- 680128 March 2003. Summary of changes for version 20030328. 6802 68031) ACPI CA Core Subsystem: 6804 6805The GPE Block Device support has been completed. New interfaces 6806are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6807interfaces (enable, disable, clear, getstatus) have been split 6808into separate interfaces for Fixed Events and General Purpose 6809Events (GPEs) in order to support GPE Block Devices properly. 6810 6811Fixed a problem where the error message "Failed to acquire 6812semaphore" would appear during operations on the embedded 6813controller (EC). 6814 6815Code and Data Size: Current core subsystem library sizes are shown 6816below. These are the code and data sizes for the acpica.lib 6817produced by the Microsoft Visual C++ 6.0 compiler, and these 6818values do not include any ACPI driver or OSPM code. The debug 6819version of the code includes the debug output trace mechanism and 6820has a much larger code and data size. Note that these values will 6821vary depending on the efficiency of the compiler and the compiler 6822options used during generation. 6823 6824 Previous Release 6825 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6826 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6827 Current Release: 6828 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6829 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6830 6831 6832---------------------------------------- 683328 February 2003. Summary of changes for version 20030228. 6834 6835 68361) ACPI CA Core Subsystem: 6837 6838The GPE handling and dispatch code has been completely overhauled 6839in preparation for support of GPE Block Devices (ID ACPI0006). 6840This affects internal data structures and code only; there should 6841be no differences visible externally. One new file has been 6842added, evgpeblk.c 6843 6844The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6845fields that are used to determine the GPE block lengths. The 6846REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6847structures are ignored. This is per the ACPI specification but it 6848isn't very clear. The full 256 Block 0/1 GPEs are now supported 6849(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6850 6851In the SCI interrupt handler, removed the read of the PM1_CONTROL 6852register to look at the SCI_EN bit. On some machines, this read 6853causes an SMI event and greatly slows down SCI events. (This may 6854in fact be the cause of slow battery status response on some 6855systems.) 6856 6857Fixed a problem where a store of a NULL string to a package object 6858could cause the premature deletion of the object. This was seen 6859during execution of the battery _BIF method on some systems, 6860resulting in no battery data being returned. 6861 6862Added AcpiWalkResources interface to simplify parsing of resource 6863lists. 6864 6865Code and Data Size: Current core subsystem library sizes are shown 6866below. These are the code and data sizes for the acpica.lib 6867produced by the Microsoft Visual C++ 6.0 compiler, and these 6868values do not include any ACPI driver or OSPM code. The debug 6869version of the code includes the debug output trace mechanism and 6870has a much larger code and data size. Note that these values will 6871vary depending on the efficiency of the compiler and the compiler 6872options used during generation. 6873 6874 Previous Release 6875 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6876 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6877 Current Release: 6878 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6879 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6880 6881 68822) Linux 6883 6884S3 fixes (Ole Rohne) 6885 6886Update ACPI PHP driver with to use new acpi_walk_resource API 6887(Bjorn Helgaas) 6888 6889Add S4BIOS support (Pavel Machek) 6890 6891Map in entire table before performing checksum (John Stultz) 6892 6893Expand the mem= cmdline to allow the specification of reserved and 6894ACPI DATA blocks (Pavel Machek) 6895 6896Never use ACPI on VISWS 6897 6898Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6899 6900Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6901causing us to think that some systems support C2 when they really 6902don't. 6903 6904Do not count processor objects for non-present CPUs (Thanks to 6905Dominik Brodowski) 6906 6907 69083) iASL Compiler: 6909 6910Fixed a problem where ASL include files could not be found and 6911opened. 6912 6913Added support for the _PDC reserved name. 6914 6915 6916---------------------------------------- 691722 January 2003. Summary of changes for version 20030122. 6918 6919 69201) ACPI CA Core Subsystem: 6921 6922Added a check for constructs of the form: Store (Local0, Local0) 6923where Local0 is not initialized. Apparently, some BIOS 6924programmers believe that this is a NOOP. Since this store doesn't 6925do anything anyway, the new prototype behavior will ignore this 6926error. This is a case where we can relax the strict checking in 6927the interpreter in the name of compatibility. 6928 6929 69302) Linux 6931 6932The AcpiSrc Source Conversion Utility has been released with the 6933Linux package for the first time. This is the utility that is 6934used to convert the ACPI CA base source code to the Linux version. 6935 6936(Both) Handle P_BLK lengths shorter than 6 more gracefully 6937 6938(Both) Move more headers to include/acpi, and delete an unused 6939header. 6940 6941(Both) Move drivers/acpi/include directory to include/acpi 6942 6943(Both) Boot functions don't use cmdline, so don't pass it around 6944 6945(Both) Remove include of unused header (Adrian Bunk) 6946 6947(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6948the 6949former now also includes the latter, acpiphp.h only needs the one, 6950now. 6951 6952(2.5) Make it possible to select method of bios restoring after S3 6953resume. [=> no more ugly ifdefs] (Pavel Machek) 6954 6955(2.5) Make proc write interfaces work (Pavel Machek) 6956 6957(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6958 6959(2.5) Break out ACPI Perf code into its own module, under cpufreq 6960(Dominik Brodowski) 6961 6962(2.4) S4BIOS support (Ducrot Bruno) 6963 6964(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6965Visinoni) 6966 6967 69683) iASL Compiler: 6969 6970Added support to disassemble SSDT and PSDTs. 6971 6972Implemented support to obtain SSDTs from the Windows registry if 6973available. 6974 6975 6976---------------------------------------- 697709 January 2003. Summary of changes for version 20030109. 6978 69791) ACPI CA Core Subsystem: 6980 6981Changed the behavior of the internal Buffer-to-String conversion 6982function. The current ACPI specification states that the contents 6983of the buffer are "converted to a string of two-character 6984hexadecimal numbers, each separated by a space". Unfortunately, 6985this definition is not backwards compatible with existing ACPI 1.0 6986implementations (although the behavior was not defined in the ACPI 69871.0 specification). The new behavior simply copies data from the 6988buffer to the string until a null character is found or the end of 6989the buffer is reached. The new String object is always null 6990terminated. This problem was seen during the generation of _BIF 6991battery data where incorrect strings were returned for battery 6992type, etc. This will also require an errata to the ACPI 6993specification. 6994 6995Renamed all instances of NATIVE_UINT and NATIVE_INT to 6996ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6997 6998Copyright in all module headers (both Linux and non-Linux) has be 6999updated to 2003. 7000 7001Code and Data Size: Current core subsystem library sizes are shown 7002below. These are the code and data sizes for the acpica.lib 7003produced by the Microsoft Visual C++ 6.0 compiler, and these 7004values do not include any ACPI driver or OSPM code. The debug 7005version of the code includes the debug output trace mechanism and 7006has a much larger code and data size. Note that these values will 7007vary depending on the efficiency of the compiler and the compiler 7008options used during generation. 7009 7010 Previous Release 7011 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7012 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7013 Current Release: 7014 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7015 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7016 7017 70182) Linux 7019 7020Fixed an oops on module insertion/removal (Matthew Tippett) 7021 7022(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 7023 7024(2.5) Replace pr_debug (Randy Dunlap) 7025 7026(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 7027 7028(Both) Eliminate spawning of thread from timer callback, in favor 7029of schedule_work() 7030 7031(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 7032 7033(Both) Added define for Fixed Function HW region (Matthew Wilcox) 7034 7035(Both) Add missing statics to button.c (Pavel Machek) 7036 7037Several changes have been made to the source code translation 7038utility that generates the Linux Code in order to make the code 7039more "Linux-like": 7040 7041All typedefs on structs and unions have been removed in keeping 7042with the Linux coding style. 7043 7044Removed the non-Linux SourceSafe module revision number from each 7045module header. 7046 7047Completed major overhaul of symbols to be lowercased for linux. 7048Doubled the number of symbols that are lowercased. 7049 7050Fixed a problem where identifiers within procedure headers and 7051within quotes were not fully lower cased (they were left with a 7052starting capital.) 7053 7054Some C macros whose only purpose is to allow the generation of 16- 7055bit code are now completely removed in the Linux code, increasing 7056readability and maintainability. 7057 7058---------------------------------------- 7059 706012 December 2002. Summary of changes for version 20021212. 7061 7062 70631) ACPI CA Core Subsystem: 7064 7065Fixed a problem where the creation of a zero-length AML Buffer 7066would cause a fault. 7067 7068Fixed a problem where a Buffer object that pointed to a static AML 7069buffer (in an ACPI table) could inadvertently be deleted, causing 7070memory corruption. 7071 7072Fixed a problem where a user buffer (passed in to the external 7073ACPI CA interfaces) could be overwritten if the buffer was too 7074small to complete the operation, causing memory corruption. 7075 7076Fixed a problem in the Buffer-to-String conversion code where a 7077string of length one was always returned, regardless of the size 7078of the input Buffer object. 7079 7080Removed the NATIVE_CHAR data type across the entire source due to 7081lack of need and lack of consistent use. 7082 7083Code and Data Size: Current core subsystem library sizes are shown 7084below. These are the code and data sizes for the acpica.lib 7085produced by the Microsoft Visual C++ 6.0 compiler, and these 7086values do not include any ACPI driver or OSPM code. The debug 7087version of the code includes the debug output trace mechanism and 7088has a much larger code and data size. Note that these values will 7089vary depending on the efficiency of the compiler and the compiler 7090options used during generation. 7091 7092 Previous Release 7093 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7094 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7095 Current Release: 7096 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7097 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7098 7099 7100---------------------------------------- 710105 December 2002. Summary of changes for version 20021205. 7102 71031) ACPI CA Core Subsystem: 7104 7105Fixed a problem where a store to a String or Buffer object could 7106cause corruption of the DSDT if the object type being stored was 7107the same as the target object type and the length of the object 7108being stored was equal to or smaller than the original (existing) 7109target object. This was seen to cause corruption of battery _BIF 7110buffers if the _BIF method modified the buffer on the fly. 7111 7112Fixed a problem where an internal error was generated if a control 7113method invocation was used in an OperationRegion, Buffer, or 7114Package declaration. This was caused by the deferred parsing of 7115the control method and thus the deferred creation of the internal 7116method object. The solution to this problem was to create the 7117internal method object at the moment the method is encountered in 7118the first pass - so that subsequent references to the method will 7119able to obtain the required parameter count and thus properly 7120parse the method invocation. This problem presented itself as an 7121AE_AML_INTERNAL during the pass 1 parse phase during table load. 7122 7123Fixed a problem where the internal String object copy routine did 7124not always allocate sufficient memory for the target String object 7125and caused memory corruption. This problem was seen to cause 7126"Allocation already present in list!" errors as memory allocation 7127became corrupted. 7128 7129Implemented a new function for the evaluation of namespace objects 7130that allows the specification of the allowable return object 7131types. This simplifies a lot of code that checks for a return 7132object of one or more specific objects returned from the 7133evaluation (such as _STA, etc.) This may become and external 7134function if it would be useful to ACPI-related drivers. 7135 7136Completed another round of prefixing #defines with "ACPI_" for 7137clarity. 7138 7139Completed additional code restructuring to allow more modular 7140linking for iASL compiler and AcpiExec. Several files were split 7141creating new files. New files: nsparse.c dsinit.c evgpe.c 7142 7143Implemented an abort mechanism to terminate an executing control 7144method via the AML debugger. This feature is useful for debugging 7145control methods that depend (wait) for specific hardware 7146responses. 7147 7148Code and Data Size: Current core subsystem library sizes are shown 7149below. These are the code and data sizes for the acpica.lib 7150produced by the Microsoft Visual C++ 6.0 compiler, and these 7151values do not include any ACPI driver or OSPM code. The debug 7152version of the code includes the debug output trace mechanism and 7153has a much larger code and data size. Note that these values will 7154vary depending on the efficiency of the compiler and the compiler 7155options used during generation. 7156 7157 Previous Release 7158 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7159 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7160 Current Release: 7161 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7162 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7163 7164 71652) iASL Compiler/Disassembler 7166 7167Fixed a compiler code generation problem for "Interrupt" Resource 7168Descriptors. If specified in the ASL, the optional "Resource 7169Source Index" and "Resource Source" fields were not inserted into 7170the correct location within the AML resource descriptor, creating 7171an invalid descriptor. 7172 7173Fixed a disassembler problem for "Interrupt" resource descriptors. 7174The optional "Resource Source Index" and "Resource Source" fields 7175were ignored. 7176 7177 7178---------------------------------------- 717922 November 2002. Summary of changes for version 20021122. 7180 7181 71821) ACPI CA Core Subsystem: 7183 7184Fixed a reported problem where an object stored to a Method Local 7185or Arg was not copied to a new object during the store - the 7186object pointer was simply copied to the Local/Arg. This caused 7187all subsequent operations on the Local/Arg to also affect the 7188original source of the store operation. 7189 7190Fixed a problem where a store operation to a Method Local or Arg 7191was not completed properly if the Local/Arg contained a reference 7192(from RefOf) to a named field. The general-purpose store-to- 7193namespace-node code is now used so that this case is handled 7194automatically. 7195 7196Fixed a problem where the internal object copy routine would cause 7197a protection fault if the object being copied was a Package and 7198contained either 1) a NULL package element or 2) a nested sub- 7199package. 7200 7201Fixed a problem with the GPE initialization that resulted from an 7202ambiguity in the ACPI specification. One section of the 7203specification states that both the address and length of the GPE 7204block must be zero if the block is not supported. Another section 7205implies that only the address need be zero if the block is not 7206supported. The code has been changed so that both the address and 7207the length must be non-zero to indicate a valid GPE block (i.e., 7208if either the address or the length is zero, the GPE block is 7209invalid.) 7210 7211Code and Data Size: Current core subsystem library sizes are shown 7212below. These are the code and data sizes for the acpica.lib 7213produced by the Microsoft Visual C++ 6.0 compiler, and these 7214values do not include any ACPI driver or OSPM code. The debug 7215version of the code includes the debug output trace mechanism and 7216has a much larger code and data size. Note that these values will 7217vary depending on the efficiency of the compiler and the compiler 7218options used during generation. 7219 7220 Previous Release 7221 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7222 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7223 Current Release: 7224 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7225 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7226 7227 72282) Linux 7229 7230Cleaned up EC driver. Exported an external EC read/write 7231interface. By going through this, other drivers (most notably 7232sonypi) will be able to serialize access to the EC. 7233 7234 72353) iASL Compiler/Disassembler 7236 7237Implemented support to optionally generate include files for both 7238ASM and C (the -i switch). This simplifies BIOS development by 7239automatically creating include files that contain external 7240declarations for the symbols that are created within the 7241 7242(optionally generated) ASM and C AML source files. 7243 7244 7245---------------------------------------- 724615 November 2002. Summary of changes for version 20021115. 7247 72481) ACPI CA Core Subsystem: 7249 7250Fixed a memory leak problem where an error during resolution of 7251 7252method arguments during a method invocation from another method 7253failed to cleanup properly by deleting all successfully resolved 7254argument objects. 7255 7256Fixed a problem where the target of the Index() operator was not 7257correctly constructed if the source object was a package. This 7258problem has not been detected because the use of a target operand 7259with Index() is very rare. 7260 7261Fixed a problem with the Index() operator where an attempt was 7262made to delete the operand objects twice. 7263 7264Fixed a problem where an attempt was made to delete an operand 7265twice during execution of the CondRefOf() operator if the target 7266did not exist. 7267 7268Implemented the first of perhaps several internal create object 7269functions that create and initialize a specific object type. This 7270consolidates duplicated code wherever the object is created, thus 7271shrinking the size of the subsystem. 7272 7273Implemented improved debug/error messages for errors that occur 7274during nested method invocations. All executing method pathnames 7275are displayed (with the error) as the call stack is unwound - thus 7276simplifying debug. 7277 7278Fixed a problem introduced in the 10/02 release that caused 7279premature deletion of a buffer object if a buffer was used as an 7280ASL operand where an integer operand is required (Thus causing an 7281implicit object conversion from Buffer to Integer.) The change in 7282the 10/02 release was attempting to fix a memory leak (albeit 7283incorrectly.) 7284 7285Code and Data Size: Current core subsystem library sizes are shown 7286below. These are the code and data sizes for the acpica.lib 7287produced by the Microsoft Visual C++ 6.0 compiler, and these 7288values do not include any ACPI driver or OSPM code. The debug 7289version of the code includes the debug output trace mechanism and 7290has a much larger code and data size. Note that these values will 7291vary depending on the efficiency of the compiler and the compiler 7292options used during generation. 7293 7294 Previous Release 7295 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7296 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7297 Current Release: 7298 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7299 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7300 7301 73022) Linux 7303 7304Changed the implementation of the ACPI semaphores to use down() 7305instead of down_interruptable(). It is important that the 7306execution of ACPI control methods not be interrupted by signals. 7307Methods must run to completion, or the system may be left in an 7308unknown/unstable state. 7309 7310Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7311(Shawn Starr) 7312 7313 73143) iASL Compiler/Disassembler 7315 7316 7317Changed the default location of output files. All output files 7318are now placed in the current directory by default instead of in 7319the directory of the source file. This change may affect some 7320existing makefiles, but it brings the behavior of the compiler in 7321line with other similar tools. The location of the output files 7322can be overridden with the -p command line switch. 7323 7324 7325---------------------------------------- 732611 November 2002. Summary of changes for version 20021111. 7327 7328 73290) ACPI Specification 2.0B is released and is now available at: 7330http://www.acpi.info/index.html 7331 7332 73331) ACPI CA Core Subsystem: 7334 7335Implemented support for the ACPI 2.0 SMBus Operation Regions. 7336This includes the early detection and handoff of the request to 7337the SMBus region handler (avoiding all of the complex field 7338support code), and support for the bidirectional return packet 7339from an SMBus write operation. This paves the way for the 7340development of SMBus drivers in each host operating system. 7341 7342Fixed a problem where the semaphore WAIT_FOREVER constant was 7343defined as 32 bits, but must be 16 bits according to the ACPI 7344specification. This had the side effect of causing ASL 7345Mutex/Event timeouts even though the ASL code requested a wait 7346forever. Changed all internal references to the ACPI timeout 7347parameter to 16 bits to prevent future problems. Changed the name 7348of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7349 7350Code and Data Size: Current core subsystem library sizes are shown 7351below. These are the code and data sizes for the acpica.lib 7352produced by the Microsoft Visual C++ 6.0 compiler, and these 7353values do not include any ACPI driver or OSPM code. The debug 7354version of the code includes the debug output trace mechanism and 7355has a much larger code and data size. Note that these values will 7356vary depending on the efficiency of the compiler and the compiler 7357options used during generation. 7358 7359 Previous Release 7360 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7361 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7362 Current Release: 7363 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7364 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7365 7366 73672) Linux 7368 7369Module loading/unloading fixes (John Cagle) 7370 7371 73723) iASL Compiler/Disassembler 7373 7374Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7375 7376Implemented support for the disassembly of all SMBus protocol 7377keywords (SMBQuick, SMBWord, etc.) 7378 7379---------------------------------------- 738001 November 2002. Summary of changes for version 20021101. 7381 7382 73831) ACPI CA Core Subsystem: 7384 7385Fixed a problem where platforms that have a GPE1 block but no GPE0 7386block were not handled correctly. This resulted in a "GPE 7387overlap" error message. GPE0 is no longer required. 7388 7389Removed code added in the previous release that inserted nodes 7390into the namespace in alphabetical order. This caused some side- 7391effects on various machines. The root cause of the problem is 7392still under investigation since in theory, the internal ordering 7393of the namespace nodes should not matter. 7394 7395 7396Enhanced error reporting for the case where a named object is not 7397found during control method execution. The full ACPI namepath 7398(name reference) of the object that was not found is displayed in 7399this case. 7400 7401Note: as a result of the overhaul of the namespace object types in 7402the previous release, the namespace nodes for the predefined 7403scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7404instead of ACPI_TYPE_ANY. This simplifies the namespace 7405management code but may affect code that walks the namespace tree 7406looking for specific object types. 7407 7408Code and Data Size: Current core subsystem library sizes are shown 7409below. These are the code and data sizes for the acpica.lib 7410produced by the Microsoft Visual C++ 6.0 compiler, and these 7411values do not include any ACPI driver or OSPM code. The debug 7412version of the code includes the debug output trace mechanism and 7413has a much larger code and data size. Note that these values will 7414vary depending on the efficiency of the compiler and the compiler 7415options used during generation. 7416 7417 Previous Release 7418 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7419 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7420 Current Release: 7421 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7422 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7423 7424 74252) Linux 7426 7427Fixed a problem introduced in the previous release where the 7428Processor and Thermal objects were not recognized and installed in 7429/proc. This was related to the scope type change described above. 7430 7431 74323) iASL Compiler/Disassembler 7433 7434Implemented the -g option to get all of the required ACPI tables 7435from the registry and save them to files (Windows version of the 7436compiler only.) The required tables are the FADT, FACS, and DSDT. 7437 7438Added ACPI table checksum validation during table disassembly in 7439order to catch corrupted tables. 7440 7441 7442---------------------------------------- 744322 October 2002. Summary of changes for version 20021022. 7444 74451) ACPI CA Core Subsystem: 7446 7447Implemented a restriction on the Scope operator that the target 7448must already exist in the namespace at the time the operator is 7449encountered (during table load or method execution). In other 7450words, forward references are not allowed and Scope() cannot 7451create a new object. This changes the previous behavior where the 7452interpreter would create the name if not found. This new behavior 7453correctly enables the search-to-root algorithm during namespace 7454lookup of the target name. Because of this upsearch, this fixes 7455the known Compaq _SB_.OKEC problem and makes both the AML 7456interpreter and iASL compiler compatible with other ACPI 7457implementations. 7458 7459Completed a major overhaul of the internal ACPI object types for 7460the ACPI Namespace and the associated operand objects. Many of 7461these types had become obsolete with the introduction of the two- 7462pass namespace load. This cleanup simplifies the code and makes 7463the entire namespace load mechanism much clearer and easier to 7464understand. 7465 7466Improved debug output for tracking scope opening/closing to help 7467diagnose scoping issues. The old scope name as well as the new 7468scope name are displayed. Also improved error messages for 7469problems with ASL Mutex objects and error messages for GPE 7470problems. 7471 7472Cleaned up the namespace dump code, removed obsolete code. 7473 7474All string output (for all namespace/object dumps) now uses the 7475common ACPI string output procedure which handles escapes properly 7476and does not emit non-printable characters. 7477 7478Fixed some issues with constants in the 64-bit version of the 7479local C library (utclib.c) 7480 7481 74822) Linux 7483 7484EC Driver: No longer attempts to acquire the Global Lock at 7485interrupt level. 7486 7487 74883) iASL Compiler/Disassembler 7489 7490Implemented ACPI 2.0B grammar change that disallows all Type 1 and 74912 opcodes outside of a control method. This means that the 7492"executable" operators (versus the "namespace" operators) cannot 7493be used at the table level; they can only be used within a control 7494method. 7495 7496Implemented the restriction on the Scope() operator where the 7497target must already exist in the namespace at the time the 7498operator is encountered (during ASL compilation). In other words, 7499forward references are not allowed and Scope() cannot create a new 7500object. This makes the iASL compiler compatible with other ACPI 7501implementations and makes the Scope() implementation adhere to the 7502ACPI specification. 7503 7504Fixed a problem where namepath optimization for the Alias operator 7505was optimizing the wrong path (of the two namepaths.) This caused 7506a "Missing alias link" error message. 7507 7508Fixed a problem where an "unknown reserved name" warning could be 7509incorrectly generated for names like "_SB" when the trailing 7510underscore is not used in the original ASL. 7511 7512Fixed a problem where the reserved name check did not handle 7513NamePaths with multiple NameSegs correctly. The first nameseg of 7514the NamePath was examined instead of the last NameSeg. 7515 7516 7517---------------------------------------- 7518 751902 October 2002. Summary of changes for this release. 7520 7521 75221) ACPI CA Core Subsystem version 20021002: 7523 7524Fixed a problem where a store/copy of a string to an existing 7525string did not always set the string length properly in the String 7526object. 7527 7528Fixed a reported problem with the ToString operator where the 7529behavior was identical to the ToHexString operator instead of just 7530simply converting a raw buffer to a string data type. 7531 7532Fixed a problem where CopyObject and the other "explicit" 7533conversion operators were not updating the internal namespace node 7534type as part of the store operation. 7535 7536Fixed a memory leak during implicit source operand conversion 7537where the original object was not deleted if it was converted to a 7538new object of a different type. 7539 7540Enhanced error messages for all problems associated with namespace 7541lookups. Common procedure generates and prints the lookup name as 7542well as the formatted status. 7543 7544Completed implementation of a new design for the Alias support 7545within the namespace. The existing design did not handle the case 7546where a new object was assigned to one of the two names due to the 7547use of an explicit conversion operator, resulting in the two names 7548pointing to two different objects. The new design simply points 7549the Alias name to the original name node - not to the object. 7550This results in a level of indirection that must be handled in the 7551name resolution mechanism. 7552 7553Code and Data Size: Current core subsystem library sizes are shown 7554below. These are the code and data sizes for the acpica.lib 7555produced by the Microsoft Visual C++ 6.0 compiler, and these 7556values do not include any ACPI driver or OSPM code. The debug 7557version of the code includes the debug output trace mechanism and 7558has a larger code and data size. Note that these values will vary 7559depending on the efficiency of the compiler and the compiler 7560options used during generation. 7561 7562 Previous Release 7563 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7564 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7565 Current Release: 7566 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7567 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7568 7569 75702) Linux 7571 7572Initialize thermal driver's timer before it is used. (Knut 7573Neumann) 7574 7575Allow handling negative celsius values. (Kochi Takayoshi) 7576 7577Fix thermal management and make trip points. R/W (Pavel Machek) 7578 7579Fix /proc/acpi/sleep. (P. Christeas) 7580 7581IA64 fixes. (David Mosberger) 7582 7583Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7584 7585Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7586Brodowski) 7587 7588 75893) iASL Compiler/Disassembler 7590 7591Clarified some warning/error messages. 7592 7593 7594---------------------------------------- 759518 September 2002. Summary of changes for this release. 7596 7597 75981) ACPI CA Core Subsystem version 20020918: 7599 7600Fixed a reported problem with reference chaining (via the Index() 7601and RefOf() operators) in the ObjectType() and SizeOf() operators. 7602The definition of these operators includes the dereferencing of 7603all chained references to return information on the base object. 7604 7605Fixed a problem with stores to indexed package elements - the 7606existing code would not complete the store if an "implicit 7607conversion" was not performed. In other words, if the existing 7608object (package element) was to be replaced completely, the code 7609didn't handle this case. 7610 7611Relaxed typechecking on the ASL "Scope" operator to allow the 7612target name to refer to an object of type Integer, String, or 7613Buffer, in addition to the scoping object types (Device, 7614predefined Scopes, Processor, PowerResource, and ThermalZone.) 7615This allows existing AML code that has workarounds for a bug in 7616Windows to function properly. A warning is issued, however. This 7617affects both the AML interpreter and the iASL compiler. Below is 7618an example of this type of ASL code: 7619 7620 Name(DEB,0x00) 7621 Scope(DEB) 7622 { 7623 7624Fixed some reported problems with 64-bit integer support in the 7625local implementation of C library functions (clib.c) 7626 7627 76282) Linux 7629 7630Use ACPI fix map region instead of IOAPIC region, since it is 7631undefined in non-SMP. 7632 7633Ensure that the SCI has the proper polarity and trigger, even on 7634systems that do not have an interrupt override entry in the MADT. 7635 76362.5 big driver reorganization (Pat Mochel) 7637 7638Use early table mapping code from acpitable.c (Andi Kleen) 7639 7640New blacklist entries (Andi Kleen) 7641 7642Blacklist improvements. Split blacklist code out into a separate 7643file. Move checking the blacklist to very early. Previously, we 7644would use ACPI tables, and then halfway through init, check the 7645blacklist -- too late. Now, it's early enough to completely fall- 7646back to non-ACPI. 7647 7648 76493) iASL Compiler/Disassembler version 20020918: 7650 7651Fixed a problem where the typechecking code didn't know that an 7652alias could point to a method. In other words, aliases were not 7653being dereferenced during typechecking. 7654 7655 7656---------------------------------------- 765729 August 2002. Summary of changes for this release. 7658 76591) ACPI CA Core Subsystem Version 20020829: 7660 7661If the target of a Scope() operator already exists, it must be an 7662object type that actually opens a scope -- such as a Device, 7663Method, Scope, etc. This is a fatal runtime error. Similar error 7664check has been added to the iASL compiler also. 7665 7666Tightened up the namespace load to disallow multiple names in the 7667same scope. This previously was allowed if both objects were of 7668the same type. (i.e., a lookup was the same as entering a new 7669name). 7670 7671 76722) Linux 7673 7674Ensure that the ACPI interrupt has the proper trigger and 7675polarity. 7676 7677local_irq_disable is extraneous. (Matthew Wilcox) 7678 7679Make "acpi=off" actually do what it says, and not use the ACPI 7680interpreter *or* the tables. 7681 7682Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7683Takayoshi) 7684 7685 76863) iASL Compiler/Disassembler Version 20020829: 7687 7688Implemented namepath optimization for name declarations. For 7689example, a declaration like "Method (\_SB_.ABCD)" would get 7690optimized to "Method (ABCD)" if the declaration is within the 7691\_SB_ scope. This optimization is in addition to the named 7692reference path optimization first released in the previous 7693version. This would seem to complete all possible optimizations 7694for namepaths within the ASL/AML. 7695 7696If the target of a Scope() operator already exists, it must be an 7697object type that actually opens a scope -- such as a Device, 7698Method, Scope, etc. 7699 7700Implemented a check and warning for unreachable code in the same 7701block below a Return() statement. 7702 7703Fixed a problem where the listing file was not generated if the 7704compiler aborted if the maximum error count was exceeded (200). 7705 7706Fixed a problem where the typechecking of method return values was 7707broken. This includes the check for a return value when the 7708method is invoked as a TermArg (a return value is expected.) 7709 7710Fixed a reported problem where EOF conditions during a quoted 7711string or comment caused a fault. 7712 7713 7714---------------------------------------- 771515 August 2002. Summary of changes for this release. 7716 77171) ACPI CA Core Subsystem Version 20020815: 7718 7719Fixed a reported problem where a Store to a method argument that 7720contains a reference did not perform the indirect store correctly. 7721This problem was created during the conversion to the new 7722reference object model - the indirect store to a method argument 7723code was not updated to reflect the new model. 7724 7725Reworked the ACPI mode change code to better conform to ACPI 2.0, 7726handle corner cases, and improve code legibility (Kochi Takayoshi) 7727 7728Fixed a problem with the pathname parsing for the carat (^) 7729prefix. The heavy use of the carat operator by the new namepath 7730optimization in the iASL compiler uncovered a problem with the AML 7731interpreter handling of this prefix. In the case where one or 7732more carats precede a single nameseg, the nameseg was treated as 7733standalone and the search rule (to root) was inadvertently 7734applied. This could cause both the iASL compiler and the 7735interpreter to find the wrong object or to miss the error that 7736should occur if the object does not exist at that exact pathname. 7737 7738Found and fixed the problem where the HP Pavilion DSDT would not 7739load. This was a relatively minor tweak to the table loading code 7740(a problem caused by the unexpected encounter with a method 7741invocation not within a control method), but it does not solve the 7742overall issue of the execution of AML code at the table level. 7743This investigation is still ongoing. 7744 7745Code and Data Size: Current core subsystem library sizes are shown 7746below. These are the code and data sizes for the acpica.lib 7747produced by the Microsoft Visual C++ 6.0 compiler, and these 7748values do not include any ACPI driver or OSPM code. The debug 7749version of the code includes the debug output trace mechanism and 7750has a larger code and data size. Note that these values will vary 7751depending on the efficiency of the compiler and the compiler 7752options used during generation. 7753 7754 Previous Release 7755 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7756 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7757 Current Release: 7758 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7759 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7760 7761 77622) Linux 7763 7764Remove redundant slab.h include (Brad Hards) 7765 7766Fix several bugs in thermal.c (Herbert Nachtnebel) 7767 7768Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7769 7770Change acpi_system_suspend to use updated irq functions (Pavel 7771Machek) 7772 7773Export acpi_get_firmware_table (Matthew Wilcox) 7774 7775Use proper root proc entry for ACPI (Kochi Takayoshi) 7776 7777Fix early-boot table parsing (Bjorn Helgaas) 7778 7779 77803) iASL Compiler/Disassembler 7781 7782Reworked the compiler options to make them more consistent and to 7783use two-letter options where appropriate. We were running out of 7784sensible letters. This may break some makefiles, so check the 7785current options list by invoking the compiler with no parameters. 7786 7787Completed the design and implementation of the ASL namepath 7788optimization option for the compiler. This option optimizes all 7789references to named objects to the shortest possible path. The 7790first attempt tries to utilize a single nameseg (4 characters) and 7791the "search-to-root" algorithm used by the interpreter. If that 7792cannot be used (because either the name is not in the search path 7793or there is a conflict with another object with the same name), 7794the pathname is optimized using the carat prefix (usually a 7795shorter string than specifying the entire path from the root.) 7796 7797Implemented support to obtain the DSDT from the Windows registry 7798(when the disassembly option is specified with no input file). 7799Added this code as the implementation for AcpiOsTableOverride in 7800the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7801utility) to scan memory for the DSDT to the AcpiOsTableOverride 7802function in the DOS OSL to make the disassembler truly OS 7803independent. 7804 7805Implemented a new option to disassemble and compile in one step. 7806When used without an input filename, this option will grab the 7807DSDT from the local machine, disassemble it, and compile it in one 7808step. 7809 7810Added a warning message for invalid escapes (a backslash followed 7811by any character other than the allowable escapes). This catches 7812the quoted string error "\_SB_" (which should be "\\_SB_" ). 7813 7814Also, there are numerous instances in the ACPI specification where 7815this error occurs. 7816 7817Added a compiler option to disable all optimizations. This is 7818basically the "compatibility mode" because by using this option, 7819the AML code will come out exactly the same as other ASL 7820compilers. 7821 7822Added error messages for incorrectly ordered dependent resource 7823functions. This includes: missing EndDependentFn macro at end of 7824dependent resource list, nested dependent function macros (both 7825start and end), and missing StartDependentFn macro. These are 7826common errors that should be caught at compile time. 7827 7828Implemented _OSI support for the disassembler and compiler. _OSI 7829must be included in the namespace for proper disassembly (because 7830the disassembler must know the number of arguments.) 7831 7832Added an "optimization" message type that is optional (off by 7833default). This message is used for all optimizations - including 7834constant folding, integer optimization, and namepath optimization. 7835 7836---------------------------------------- 783725 July 2002. Summary of changes for this release. 7838 7839 78401) ACPI CA Core Subsystem Version 20020725: 7841 7842The AML Disassembler has been enhanced to produce compilable ASL 7843code and has been integrated into the iASL compiler (see below) as 7844well as the single-step disassembly for the AML debugger and the 7845disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7846resource templates and macros are fully supported. The 7847disassembler has been tested on over 30 different AML files, 7848producing identical AML when the resulting disassembled ASL file 7849is recompiled with the same ASL compiler. 7850 7851Modified the Resource Manager to allow zero interrupts and zero 7852dma channels during the GetCurrentResources call. This was 7853causing problems on some platforms. 7854 7855Added the AcpiOsRedirectOutput interface to the OSL to simplify 7856output redirection for the AcpiOsPrintf and AcpiOsVprintf 7857interfaces. 7858 7859Code and Data Size: Current core subsystem library sizes are shown 7860below. These are the code and data sizes for the acpica.lib 7861produced by the Microsoft Visual C++ 6.0 compiler, and these 7862values do not include any ACPI driver or OSPM code. The debug 7863version of the code includes the debug output trace mechanism and 7864has a larger code and data size. Note that these values will vary 7865depending on the efficiency of the compiler and the compiler 7866options used during generation. 7867 7868 Previous Release 7869 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7870 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7871 Current Release: 7872 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7873 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7874 7875 78762) Linux 7877 7878Fixed a panic in the EC driver (Dominik Brodowski) 7879 7880Implemented checksum of the R/XSDT itself during Linux table scan 7881(Richard Schaal) 7882 7883 78843) iASL compiler 7885 7886The AML disassembler is integrated into the compiler. The "-d" 7887option invokes the disassembler to completely disassemble an 7888input AML file, producing as output a text ASL file with the 7889extension ".dsl" (to avoid name collisions with existing .asl 7890source files.) A future enhancement will allow the disassembler 7891to obtain the BIOS DSDT from the registry under Windows. 7892 7893Fixed a problem with the VendorShort and VendorLong resource 7894descriptors where an invalid AML sequence was created. 7895 7896Implemented a fix for BufferData term in the ASL parser. It was 7897inadvertently defined twice, allowing invalid syntax to pass and 7898causing reduction conflicts. 7899 7900Fixed a problem where the Ones opcode could get converted to a 7901value of zero if "Ones" was used where a byte, word or dword value 7902was expected. The 64-bit value is now truncated to the correct 7903size with the correct value. 7904 7905 7906 7907---------------------------------------- 790802 July 2002. Summary of changes for this release. 7909 7910 79111) ACPI CA Core Subsystem Version 20020702: 7912 7913The Table Manager code has been restructured to add several new 7914features. Tables that are not required by the core subsystem 7915(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7916validated in any way and are returned from AcpiGetFirmwareTable if 7917requested. The AcpiOsTableOverride interface is now called for 7918each table that is loaded by the subsystem in order to allow the 7919host to override any table it chooses. Previously, only the DSDT 7920could be overridden. Added one new files, tbrsdt.c and 7921tbgetall.c. 7922 7923Fixed a problem with the conversion of internal package objects to 7924external objects (when a package is returned from a control 7925method.) The return buffer length was set to zero instead of the 7926proper length of the package object. 7927 7928Fixed a reported problem with the use of the RefOf and DeRefOf 7929operators when passing reference arguments to control methods. A 7930new type of Reference object is used internally for references 7931produced by the RefOf operator. 7932 7933Added additional error messages in the Resource Manager to explain 7934AE_BAD_DATA errors when they occur during resource parsing. 7935 7936Split the AcpiEnableSubsystem into two primitives to enable a 7937finer granularity initialization sequence. These two calls should 7938be called in this order: AcpiEnableSubsystem (flags), 7939AcpiInitializeObjects (flags). The flags parameter remains the 7940same. 7941 7942 79432) Linux 7944 7945Updated the ACPI utilities module to understand the new style of 7946fully resolved package objects that are now returned from the core 7947subsystem. This eliminates errors of the form: 7948 7949 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7950 acpi_utils-0430 [145] acpi_evaluate_reference: 7951 Invalid element in package (not a device reference) 7952 7953The method evaluation utility uses the new buffer allocation 7954scheme instead of calling AcpiEvaluate Object twice. 7955 7956Added support for ECDT. This allows the use of the Embedded 7957 7958Controller before the namespace has been fully initialized, which 7959is necessary for ACPI 2.0 support, and for some laptops to 7960initialize properly. (Laptops using ECDT are still rare, so only 7961limited testing was performed of the added functionality.) 7962 7963Fixed memory leaks in the EC driver. 7964 7965Eliminated a brittle code structure in acpi_bus_init(). 7966 7967Eliminated the acpi_evaluate() helper function in utils.c. It is 7968no longer needed since acpi_evaluate_object can optionally 7969allocate memory for the return object. 7970 7971Implemented fix for keyboard hang when getting battery readings on 7972some systems (Stephen White) 7973 7974PCI IRQ routing update (Dominik Brodowski) 7975 7976Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7977support 7978 7979---------------------------------------- 798011 June 2002. Summary of changes for this release. 7981 7982 79831) ACPI CA Core Subsystem Version 20020611: 7984 7985Fixed a reported problem where constants such as Zero and One 7986appearing within _PRT packages were not handled correctly within 7987the resource manager code. Originally reported against the ASL 7988compiler because the code generator now optimizes integers to 7989their minimal AML representation (i.e. AML constants if possible.) 7990The _PRT code now handles all AML constant opcodes correctly 7991(Zero, One, Ones, Revision). 7992 7993Fixed a problem with the Concatenate operator in the AML 7994interpreter where a buffer result object was incorrectly marked as 7995not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7996 7997All package sub-objects are now fully resolved before they are 7998returned from the external ACPI interfaces. This means that name 7999strings are resolved to object handles, and constant operators 8000(Zero, One, Ones, Revision) are resolved to Integers. 8001 8002Implemented immediate resolution of the AML Constant opcodes 8003(Zero, One, Ones, Revision) to Integer objects upon detection 8004within the AML stream. This has simplified and reduced the 8005generated code size of the subsystem by eliminating about 10 8006switch statements for these constants (which previously were 8007contained in Reference objects.) The complicating issues are that 8008the Zero opcode is used as a "placeholder" for unspecified 8009optional target operands and stores to constants are defined to be 8010no-ops. 8011 8012Code and Data Size: Current core subsystem library sizes are shown 8013below. These are the code and data sizes for the acpica.lib 8014produced by the Microsoft Visual C++ 6.0 compiler, and these 8015values do not include any ACPI driver or OSPM code. The debug 8016version of the code includes the debug output trace mechanism and 8017has a larger code and data size. Note that these values will vary 8018depending on the efficiency of the compiler and the compiler 8019options used during generation. 8020 8021 Previous Release 8022 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8023 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8024 Current Release: 8025 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 8026 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 8027 8028 80292) Linux 8030 8031 8032Added preliminary support for obtaining _TRA data for PCI root 8033bridges (Bjorn Helgaas). 8034 8035 80363) iASL Compiler Version X2046: 8037 8038Fixed a problem where the "_DDN" reserved name was defined to be a 8039control method with one argument. There are no arguments, and 8040_DDN does not have to be a control method. 8041 8042Fixed a problem with the Linux version of the compiler where the 8043source lines printed with error messages were the wrong lines. 8044This turned out to be the "LF versus CR/LF" difference between 8045Windows and Unix. This appears to be the longstanding issue 8046concerning listing output and error messages. 8047 8048Fixed a problem with the Linux version of compiler where opcode 8049names within error messages were wrong. This was caused by a 8050slight difference in the output of the Flex tool on Linux versus 8051Windows. 8052 8053Fixed a problem with the Linux compiler where the hex output files 8054contained some garbage data caused by an internal buffer overrun. 8055 8056 8057---------------------------------------- 805817 May 2002. Summary of changes for this release. 8059 8060 80611) ACPI CA Core Subsystem Version 20020517: 8062 8063Implemented a workaround to an BIOS bug discovered on the HP 8064OmniBook where the FADT revision number and the table size are 8065inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8066behavior is to fallback to using only the ACPI 1.0 fields of the 8067FADT if the table is too small to be a ACPI 2.0 table as claimed 8068by the revision number. Although this is a BIOS bug, this is a 8069case where the workaround is simple enough and with no side 8070effects, so it seemed prudent to add it. A warning message is 8071issued, however. 8072 8073Implemented minimum size checks for the fixed-length ACPI tables - 8074- the FADT and FACS, as well as consistency checks between the 8075revision number and the table size. 8076 8077Fixed a reported problem in the table override support where the 8078new table pointer was incorrectly treated as a physical address 8079instead of a logical address. 8080 8081Eliminated the use of the AE_AML_ERROR exception and replaced it 8082with more descriptive codes. 8083 8084Fixed a problem where an exception would occur if an ASL Field was 8085defined with no named Field Units underneath it (used by some 8086index fields). 8087 8088Code and Data Size: Current core subsystem library sizes are shown 8089below. These are the code and data sizes for the acpica.lib 8090produced by the Microsoft Visual C++ 6.0 compiler, and these 8091values do not include any ACPI driver or OSPM code. The debug 8092version of the code includes the debug output trace mechanism and 8093has a larger code and data size. Note that these values will vary 8094depending on the efficiency of the compiler and the compiler 8095options used during generation. 8096 8097 Previous Release 8098 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8099 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8100 Current Release: 8101 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8102 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8103 8104 8105 81062) Linux 8107 8108Much work done on ACPI init (MADT and PCI IRQ routing support). 8109(Paul D. and Dominik Brodowski) 8110 8111Fix PCI IRQ-related panic on boot (Sam Revitch) 8112 8113Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8114 8115Fix "MHz" typo (Dominik Brodowski) 8116 8117Fix RTC year 2000 issue (Dominik Brodowski) 8118 8119Preclude multiple button proc entries (Eric Brunet) 8120 8121Moved arch-specific code out of include/platform/aclinux.h 8122 81233) iASL Compiler Version X2044: 8124 8125Implemented error checking for the string used in the EISAID macro 8126(Usually used in the definition of the _HID object.) The code now 8127strictly enforces the PnP format - exactly 7 characters, 3 8128uppercase letters and 4 hex digits. 8129 8130If a raw string is used in the definition of the _HID object 8131(instead of the EISAID macro), the string must contain all 8132alphanumeric characters (e.g., "*PNP0011" is not allowed because 8133of the asterisk.) 8134 8135Implemented checking for invalid use of ACPI reserved names for 8136most of the name creation operators (Name, Device, Event, Mutex, 8137OperationRegion, PowerResource, Processor, and ThermalZone.) 8138Previously, this check was only performed for control methods. 8139 8140Implemented an additional check on the Name operator to emit an 8141error if a reserved name that must be implemented in ASL as a 8142control method is used. We know that a reserved name must be a 8143method if it is defined with input arguments. 8144 8145The warning emitted when a namespace object reference is not found 8146during the cross reference phase has been changed into an error. 8147The "External" directive should be used for names defined in other 8148modules. 8149 8150 81514) Tools and Utilities 8152 8153The 16-bit tools (adump16 and aexec16) have been regenerated and 8154tested. 8155 8156Fixed a problem with the output of both acpidump and adump16 where 8157the indentation of closing parentheses and brackets was not 8158 8159aligned properly with the parent block. 8160 8161 8162---------------------------------------- 816303 May 2002. Summary of changes for this release. 8164 8165 81661) ACPI CA Core Subsystem Version 20020503: 8167 8168Added support a new OSL interface that allows the host operating 8169 8170system software to override the DSDT found in the firmware - 8171AcpiOsTableOverride. With this interface, the OSL can examine the 8172version of the firmware DSDT and replace it with a different one 8173if desired. 8174 8175Added new external interfaces for accessing ACPI registers from 8176device drivers and other system software - AcpiGetRegister and 8177AcpiSetRegister. This was simply an externalization of the 8178existing AcpiHwBitRegister interfaces. 8179 8180Fixed a regression introduced in the previous build where the 8181ASL/AML CreateField operator always returned an error, 8182"destination must be a NS Node". 8183 8184Extended the maximum time (before failure) to successfully enable 8185ACPI mode to 3 seconds. 8186 8187Code and Data Size: Current core subsystem library sizes are shown 8188below. These are the code and data sizes for the acpica.lib 8189produced by the Microsoft Visual C++ 6.0 compiler, and these 8190values do not include any ACPI driver or OSPM code. The debug 8191version of the code includes the debug output trace mechanism and 8192has a larger code and data size. Note that these values will vary 8193depending on the efficiency of the compiler and the compiler 8194options used during generation. 8195 8196 Previous Release 8197 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8198 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8199 Current Release: 8200 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8201 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8202 8203 82042) Linux 8205 8206Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8207free. While 3 out of 4 of our in-house systems work fine, the last 8208one still hangs when testing the LAPIC timer. 8209 8210Renamed many files in 2.5 kernel release to omit "acpi_" from the 8211name. 8212 8213Added warning on boot for Presario 711FR. 8214 8215Sleep improvements (Pavel Machek) 8216 8217ACPI can now be built without CONFIG_PCI enabled. 8218 8219IA64: Fixed memory map functions (JI Lee) 8220 8221 82223) iASL Compiler Version X2043: 8223 8224Added support to allow the compiler to be integrated into the MS 8225VC++ development environment for one-button compilation of single 8226files or entire projects -- with error-to-source-line mapping. 8227 8228Implemented support for compile-time constant folding for the 8229Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8230specification. This allows the ASL writer to use expressions 8231instead of Integer/Buffer/String constants in terms that must 8232evaluate to constants at compile time and will also simplify the 8233emitted AML in any such sub-expressions that can be folded 8234(evaluated at compile-time.) This increases the size of the 8235compiler significantly because a portion of the ACPI CA AML 8236interpreter is included within the compiler in order to pre- 8237evaluate constant expressions. 8238 8239 8240Fixed a problem with the "Unicode" ASL macro that caused the 8241compiler to fault. (This macro is used in conjunction with the 8242_STR reserved name.) 8243 8244Implemented an AML opcode optimization to use the Zero, One, and 8245Ones opcodes where possible to further reduce the size of integer 8246constants and thus reduce the overall size of the generated AML 8247code. 8248 8249Implemented error checking for new reserved terms for ACPI version 82502.0A. 8251 8252Implemented the -qr option to display the current list of ACPI 8253reserved names known to the compiler. 8254 8255Implemented the -qc option to display the current list of ASL 8256operators that are allowed within constant expressions and can 8257therefore be folded at compile time if the operands are constants. 8258 8259 82604) Documentation 8261 8262Updated the Programmer's Reference for new interfaces, data types, 8263and memory allocation model options. 8264 8265Updated the iASL Compiler User Reference to apply new format and 8266add information about new features and options. 8267 8268---------------------------------------- 826919 April 2002. Summary of changes for this release. 8270 82711) ACPI CA Core Subsystem Version 20020419: 8272 8273The source code base for the Core Subsystem has been completely 8274cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8275versions. The Lint option files used are included in the 8276/acpi/generate/lint directory. 8277 8278Implemented enhanced status/error checking across the entire 8279Hardware manager subsystem. Any hardware errors (reported from 8280the OSL) are now bubbled up and will abort a running control 8281method. 8282 8283 8284Fixed a problem where the per-ACPI-table integer width (32 or 64) 8285was stored only with control method nodes, causing a fault when 8286non-control method code was executed during table loading. The 8287solution implemented uses a global variable to indicate table 8288width across the entire ACPI subsystem. Therefore, ACPI CA does 8289not support mixed integer widths across different ACPI tables 8290(DSDT, SSDT). 8291 8292Fixed a problem where NULL extended fields (X fields) in an ACPI 82932.0 ACPI FADT caused the table load to fail. Although the 8294existing ACPI specification is a bit fuzzy on this topic, the new 8295behavior is to fall back on a ACPI 1.0 field if the corresponding 8296ACPI 2.0 X field is zero (even though the table revision indicates 8297a full ACPI 2.0 table.) The ACPI specification will be updated to 8298clarify this issue. 8299 8300Fixed a problem with the SystemMemory operation region handler 8301where memory was always accessed byte-wise even if the AML- 8302specified access width was larger than a byte. This caused 8303problems on systems with memory-mapped I/O. Memory is now 8304accessed with the width specified. On systems that do not support 8305non-aligned transfers, a check is made to guarantee proper address 8306alignment before proceeding in order to avoid an AML-caused 8307alignment fault within the kernel. 8308 8309 8310Fixed a problem with the ExtendedIrq resource where only one byte 8311of the 4-byte Irq field was extracted. 8312 8313Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8314function was out of date and required a rewrite. 8315 8316Code and Data Size: Current core subsystem library sizes are shown 8317below. These are the code and data sizes for the acpica.lib 8318produced by the Microsoft Visual C++ 6.0 compiler, and these 8319values do not include any ACPI driver or OSPM code. The debug 8320version of the code includes the debug output trace mechanism and 8321has a larger code and data size. Note that these values will vary 8322depending on the efficiency of the compiler and the compiler 8323options used during generation. 8324 8325 Previous Release 8326 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8327 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8328 Current Release: 8329 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8330 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8331 8332 83332) Linux 8334 8335PCI IRQ routing fixes (Dominik Brodowski) 8336 8337 83383) iASL Compiler Version X2042: 8339 8340Implemented an additional compile-time error check for a field 8341unit whose size + minimum access width would cause a run-time 8342access beyond the end-of-region. Previously, only the field size 8343itself was checked. 8344 8345The Core subsystem and iASL compiler now share a common parse 8346object in preparation for compile-time evaluation of the type 83473/4/5 ASL operators. 8348 8349 8350---------------------------------------- 8351Summary of changes for this release: 03_29_02 8352 83531) ACPI CA Core Subsystem Version 20020329: 8354 8355Implemented support for late evaluation of TermArg operands to 8356Buffer and Package objects. This allows complex expressions to be 8357used in the declarations of these object types. 8358 8359Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 83601.0, if the field was larger than 32 bits, it was returned as a 8361buffer - otherwise it was returned as an integer. In ACPI 2.0, 8362the field is returned as a buffer only if the field is larger than 836364 bits. The TableRevision is now considered when making this 8364conversion to avoid incompatibility with existing ASL code. 8365 8366Implemented logical addressing for AcpiOsGetRootPointer. This 8367allows an RSDP with either a logical or physical address. With 8368this support, the host OS can now override all ACPI tables with 8369one logical RSDP. Includes implementation of "typed" pointer 8370support to allow a common data type for both physical and logical 8371pointers internally. This required a change to the 8372AcpiOsGetRootPointer interface. 8373 8374Implemented the use of ACPI 2.0 Generic Address Structures for all 8375GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8376mapped I/O for these ACPI features. 8377 8378Initialization now ignores not only non-required tables (All 8379tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8380not validate the table headers of unrecognized tables. 8381 8382Fixed a problem where a notify handler could only be 8383installed/removed on an object of type Device. All "notify" 8384 8385objects are now supported -- Devices, Processor, Power, and 8386Thermal. 8387 8388Removed most verbosity from the ACPI_DB_INFO debug level. Only 8389critical information is returned when this debug level is enabled. 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: 65.4K Code, 6.2K Data, 71.6K Total 8402 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8403 Current Release: 8404 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8405 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8406 8407 84082) Linux: 8409 8410The processor driver (acpi_processor.c) now fully supports ACPI 84112.0-based processor performance control (e.g. Intel(R) 8412SpeedStep(TM) technology) Note that older laptops that only have 8413the Intel "applet" interface are not supported through this. The 8414'limit' and 'performance' interface (/proc) are fully functional. 8415[Note that basic policy for controlling performance state 8416transitions will be included in the next version of ospmd.] The 8417idle handler was modified to more aggressively use C2, and PIIX4 8418errata handling underwent a complete overhaul (big thanks to 8419Dominik Brodowski). 8420 8421Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8422based devices in the ACPI namespace are now dynamically bound 8423(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8424This allows, among other things, ACPI to resolve bus numbers for 8425subordinate PCI bridges. 8426 8427Enhanced PCI IRQ routing to get the proper bus number for _PRT 8428entries defined underneath PCI bridges. 8429 8430Added IBM 600E to bad bios list due to invalid _ADR value for 8431PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8432 8433In the process of adding full MADT support (e.g. IOAPIC) for IA32 8434(acpi.c, mpparse.c) -- stay tuned. 8435 8436Added back visual differentiation between fixed-feature and 8437control-method buttons in dmesg. Buttons are also subtyped (e.g. 8438button/power/PWRF) to simplify button identification. 8439 8440We no longer use -Wno-unused when compiling debug. Please ignore 8441any "_THIS_MODULE defined but not used" messages. 8442 8443Can now shut down the system using "magic sysrq" key. 8444 8445 84463) iASL Compiler version 2041: 8447 8448Fixed a problem where conversion errors for hex/octal/decimal 8449constants were not reported. 8450 8451Implemented a fix for the General Register template Address field. 8452This field was 8 bits when it should be 64. 8453 8454Fixed a problem where errors/warnings were no longer being emitted 8455within the listing output file. 8456 8457Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8458exactly 4 characters, alphanumeric only. 8459 8460 8461 8462 8463---------------------------------------- 8464Summary of changes for this release: 03_08_02 8465 8466 84671) ACPI CA Core Subsystem Version 20020308: 8468 8469Fixed a problem with AML Fields where the use of the "AccessAny" 8470keyword could cause an interpreter error due to attempting to read 8471or write beyond the end of the parent Operation Region. 8472 8473Fixed a problem in the SystemMemory Operation Region handler where 8474an attempt was made to map memory beyond the end of the region. 8475This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8476errors on some Linux systems. 8477 8478Fixed a problem where the interpreter/namespace "search to root" 8479algorithm was not functioning for some object types. Relaxed the 8480internal restriction on the search to allow upsearches for all 8481external object types as well as most internal types. 8482 8483 84842) Linux: 8485 8486We now use safe_halt() macro versus individual calls to sti | hlt. 8487 8488Writing to the processor limit interface should now work. "echo 1" 8489will increase the limit, 2 will decrease, and 0 will reset to the 8490 8491default. 8492 8493 84943) ASL compiler: 8495 8496Fixed segfault on Linux version. 8497 8498 8499---------------------------------------- 8500Summary of changes for this release: 02_25_02 8501 85021) ACPI CA Core Subsystem: 8503 8504 8505Fixed a problem where the GPE bit masks were not initialized 8506properly, causing erratic GPE behavior. 8507 8508Implemented limited support for multiple calling conventions. The 8509code can be generated with either the VPL (variable parameter 8510list, or "C") convention, or the FPL (fixed parameter list, or 8511"Pascal") convention. The core subsystem is about 3.4% smaller 8512when generated with FPL. 8513 8514 85152) Linux 8516 8517Re-add some /proc/acpi/event functionality that was lost during 8518the rewrite 8519 8520Resolved issue with /proc events for fixed-feature buttons showing 8521up as the system device. 8522 8523Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8524 8525Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8526 8527Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8528 8529Fixed limit interface & usage to fix bugs with passive cooling 8530hysterisis. 8531 8532Restructured PRT support. 8533 8534 8535---------------------------------------- 8536Summary of changes for this label: 02_14_02 8537 8538 85391) ACPI CA Core Subsystem: 8540 8541Implemented support in AcpiLoadTable to allow loading of FACS and 8542FADT tables. 8543 8544Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8545been removed. All 64-bit platforms should be migrated to the ACPI 85462.0 tables. The actbl71.h header has been removed from the source 8547tree. 8548 8549All C macros defined within the subsystem have been prefixed with 8550"ACPI_" to avoid collision with other system include files. 8551 8552Removed the return value for the two AcpiOsPrint interfaces, since 8553it is never used and causes lint warnings for ignoring the return 8554value. 8555 8556Added error checking to all internal mutex acquire and release 8557calls. Although a failure from one of these interfaces is 8558probably a fatal system error, these checks will cause the 8559immediate abort of the currently executing method or interface. 8560 8561Fixed a problem where the AcpiSetCurrentResources interface could 8562fault. This was a side effect of the deployment of the new memory 8563allocation model. 8564 8565Fixed a couple of problems with the Global Lock support introduced 8566in the last major build. The "common" (1.0/2.0) internal FACS was 8567being overwritten with the FACS signature and clobbering the 8568Global Lock pointer. Also, the actual firmware FACS was being 8569unmapped after construction of the "common" FACS, preventing 8570access to the actual Global Lock field within it. The "common" 8571internal FACS is no longer installed as an actual ACPI table; it 8572is used simply as a global. 8573 8574Code and Data Size: Current core subsystem library sizes are shown 8575below. These are the code and data sizes for the acpica.lib 8576produced by the Microsoft Visual C++ 6.0 compiler, and these 8577values do not include any ACPI driver or OSPM code. The debug 8578version of the code includes the debug output trace mechanism and 8579has a larger code and data size. Note that these values will vary 8580depending on the efficiency of the compiler and the compiler 8581options used during generation. 8582 8583 Previous Release (02_07_01) 8584 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8585 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8586 Current Release: 8587 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8588 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8589 8590 85912) Linux 8592 8593Updated Linux-specific code for core macro and OSL interface 8594changes described above. 8595 8596Improved /proc/acpi/event. It now can be opened only once and has 8597proper poll functionality. 8598 8599Fixed and restructured power management (acpi_bus). 8600 8601Only create /proc "view by type" when devices of that class exist. 8602 8603Fixed "charging/discharging" bug (and others) in acpi_battery. 8604 8605Improved thermal zone code. 8606 8607 86083) ASL Compiler, version X2039: 8609 8610 8611Implemented the new compiler restriction on ASL String hex/octal 8612escapes to non-null, ASCII values. An error results if an invalid 8613value is used. (This will require an ACPI 2.0 specification 8614change.) 8615 8616AML object labels that are output to the optional C and ASM source 8617are now prefixed with both the ACPI table signature and table ID 8618to help guarantee uniqueness within a large BIOS project. 8619 8620 8621---------------------------------------- 8622Summary of changes for this label: 02_01_02 8623 86241) ACPI CA Core Subsystem: 8625 8626ACPI 2.0 support is complete in the entire Core Subsystem and the 8627ASL compiler. All new ACPI 2.0 operators are implemented and all 8628other changes for ACPI 2.0 support are complete. With 8629simultaneous code and data optimizations throughout the subsystem, 8630ACPI 2.0 support has been implemented with almost no additional 8631cost in terms of code and data size. 8632 8633Implemented a new mechanism for allocation of return buffers. If 8634the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8635be allocated on behalf of the caller. Consolidated all return 8636buffer validation and allocation to a common procedure. Return 8637buffers will be allocated via the primary OSL allocation interface 8638since it appears that a separate pool is not needed by most users. 8639If a separate pool is required for these buffers, the caller can 8640still use the original mechanism and pre-allocate the buffer(s). 8641 8642Implemented support for string operands within the DerefOf 8643operator. 8644 8645Restructured the Hardware and Event managers to be table driven, 8646simplifying the source code and reducing the amount of generated 8647code. 8648 8649Split the common read/write low-level ACPI register bitfield 8650procedure into a separate read and write, simplifying the code 8651considerably. 8652 8653Obsoleted the AcpiOsCallocate OSL interface. This interface was 8654used only a handful of times and didn't have enough critical mass 8655for a separate interface. Replaced with a common calloc procedure 8656in the core. 8657 8658Fixed a reported problem with the GPE number mapping mechanism 8659that allows GPE1 numbers to be non-contiguous with GPE0. 8660Reorganized the GPE information and shrunk a large array that was 8661originally large enough to hold info for all possible GPEs (256) 8662to simply large enough to hold all GPEs up to the largest GPE 8663number on the machine. 8664 8665Fixed a reported problem with resource structure alignment on 64- 8666bit platforms. 8667 8668Changed the AcpiEnableEvent and AcpiDisableEvent external 8669interfaces to not require any flags for the common case of 8670enabling/disabling a GPE. 8671 8672Implemented support to allow a "Notify" on a Processor object. 8673 8674Most TBDs in comments within the source code have been resolved 8675and eliminated. 8676 8677 8678Fixed a problem in the interpreter where a standalone parent 8679prefix (^) was not handled correctly in the interpreter and 8680debugger. 8681 8682Removed obsolete and unnecessary GPE save/restore code. 8683 8684Implemented Field support in the ASL Load operator. This allows a 8685table to be loaded from a named field, in addition to loading a 8686table directly from an Operation Region. 8687 8688Implemented timeout and handle support in the external Global Lock 8689interfaces. 8690 8691Fixed a problem in the AcpiDump utility where pathnames were no 8692longer being generated correctly during the dump of named objects. 8693 8694Modified the AML debugger to give a full display of if/while 8695predicates instead of just one AML opcode at a time. (The 8696predicate can have several nested ASL statements.) The old method 8697was confusing during single stepping. 8698 8699Code and Data Size: Current core subsystem library sizes are shown 8700below. These are the code and data sizes for the acpica.lib 8701produced by the Microsoft Visual C++ 6.0 compiler, and these 8702values do not include any ACPI driver or OSPM code. The debug 8703version of the code includes the debug output trace mechanism and 8704has a larger code and data size. Note that these values will vary 8705depending on the efficiency of the compiler and the compiler 8706options used during generation. 8707 8708 Previous Release (12_18_01) 8709 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8710 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8711 Current Release: 8712 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8713 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8714 87152) Linux 8716 8717 Implemented fix for PIIX reverse throttling errata (Processor 8718driver) 8719 8720Added new Limit interface (Processor and Thermal drivers) 8721 8722New thermal policy (Thermal driver) 8723 8724Many updates to /proc 8725 8726Battery "low" event support (Battery driver) 8727 8728Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8729 8730IA32 - IA64 initialization unification, no longer experimental 8731 8732Menuconfig options redesigned 8733 87343) ASL Compiler, version X2037: 8735 8736Implemented several new output features to simplify integration of 8737AML code into firmware: 1) Output the AML in C source code with 8738labels for each named ASL object. The original ASL source code 8739is interleaved as C comments. 2) Output the AML in ASM source code 8740with labels and interleaved ASL source. 3) Output the AML in 8741raw hex table form, in either C or ASM. 8742 8743Implemented support for optional string parameters to the 8744LoadTable operator. 8745 8746Completed support for embedded escape sequences within string 8747literals. The compiler now supports all single character escapes 8748as well as the Octal and Hex escapes. Note: the insertion of a 8749null byte into a string literal (via the hex/octal escape) causes 8750the string to be immediately terminated. A warning is issued. 8751 8752Fixed a problem where incorrect AML was generated for the case 8753where an ASL namepath consists of a single parent prefix ( 8754 8755) with no trailing name segments. 8756 8757The compiler has been successfully generated with a 64-bit C 8758compiler. 8759 8760 8761 8762 8763---------------------------------------- 8764Summary of changes for this label: 12_18_01 8765 87661) Linux 8767 8768Enhanced blacklist with reason and severity fields. Any table's 8769signature may now be used to identify a blacklisted system. 8770 8771Call _PIC control method to inform the firmware which interrupt 8772model the OS is using. Turn on any disabled link devices. 8773 8774Cleaned up busmgr /proc error handling (Andreas Dilger) 8775 8776 2) ACPI CA Core Subsystem: 8777 8778Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8779while loop) 8780 8781Completed implementation of the ACPI 2.0 "Continue", 8782"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8783operators. All new ACPI 2.0 operators are now implemented in both 8784the ASL compiler and the AML interpreter. The only remaining ACPI 87852.0 task is support for the String data type in the DerefOf 8786operator. Fixed a problem with AcquireMutex where the status code 8787was lost if the caller had to actually wait for the mutex. 8788 8789Increased the maximum ASL Field size from 64K bits to 4G bits. 8790 8791Completed implementation of the external Global Lock interfaces -- 8792AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8793Handler parameters were added. 8794 8795Completed another pass at removing warnings and issues when 8796compiling with 64-bit compilers. The code now compiles cleanly 8797with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8798add and subtract (diff) macros have changed considerably. 8799 8800 8801Created and deployed a new ACPI_SIZE type that is 64-bits wide on 880264-bit platforms, 32-bits on all others. This type is used 8803wherever memory allocation and/or the C sizeof() operator is used, 8804and affects the OSL memory allocation interfaces AcpiOsAllocate 8805and AcpiOsCallocate. 8806 8807Implemented sticky user breakpoints in the AML debugger. 8808 8809Code and Data Size: Current core subsystem library sizes are shown 8810below. These are the code and data sizes for the acpica.lib 8811produced by the Microsoft Visual C++ 6.0 compiler, and these 8812values do not include any ACPI driver or OSPM code. The debug 8813version of the code includes the debug output trace mechanism and 8814has a larger code and data size. Note that these values will vary 8815depending on the efficiency of the compiler and the compiler 8816options used during generation. 8817 8818 Previous Release (12_05_01) 8819 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8820 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8821 Current Release: 8822 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8823 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8824 8825 3) ASL Compiler, version X2034: 8826 8827Now checks for (and generates an error if detected) the use of a 8828Break or Continue statement without an enclosing While statement. 8829 8830 8831Successfully generated the compiler with the Intel 64-bit C 8832compiler. 8833 8834 ---------------------------------------- 8835Summary of changes for this label: 12_05_01 8836 8837 1) ACPI CA Core Subsystem: 8838 8839The ACPI 2.0 CopyObject operator is fully implemented. This 8840operator creates a new copy of an object (and is also used to 8841bypass the "implicit conversion" mechanism of the Store operator.) 8842 8843The ACPI 2.0 semantics for the SizeOf operator are fully 8844implemented. The change is that performing a SizeOf on a 8845reference object causes an automatic dereference of the object to 8846tha actual value before the size is evaluated. This behavior was 8847undefined in ACPI 1.0. 8848 8849The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8850have been implemented. The interrupt polarity and mode are now 8851independently set. 8852 8853Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8854appearing in Package objects were not properly converted to 8855integers when the internal Package was converted to an external 8856object (via the AcpiEvaluateObject interface.) 8857 8858Fixed a problem with the namespace object deletion mechanism for 8859objects created by control methods. There were two parts to this 8860problem: 1) Objects created during the initialization phase method 8861parse were not being deleted, and 2) The object owner ID mechanism 8862to track objects was broken. 8863 8864Fixed a problem where the use of the ASL Scope operator within a 8865control method would result in an invalid opcode exception. 8866 8867Fixed a problem introduced in the previous label where the buffer 8868length required for the _PRT structure was not being returned 8869correctly. 8870 8871Code and Data Size: Current core subsystem library sizes are shown 8872below. These are the code and data sizes for the acpica.lib 8873produced by the Microsoft Visual C++ 6.0 compiler, and these 8874values do not include any ACPI driver or OSPM code. The debug 8875version of the code includes the debug output trace mechanism and 8876has a larger code and data size. Note that these values will vary 8877depending on the efficiency of the compiler and the compiler 8878options used during generation. 8879 8880 Previous Release (11_20_01) 8881 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8882 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8883 8884 Current Release: 8885 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8886 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8887 8888 2) Linux: 8889 8890Updated all files to apply cleanly against 2.4.16. 8891 8892Added basic PCI Interrupt Routing Table (PRT) support for IA32 8893(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8894version supports both static and dyanmic PRT entries, but dynamic 8895entries are treated as if they were static (not yet 8896reconfigurable). Architecture- specific code to use this data is 8897absent on IA32 but should be available shortly. 8898 8899Changed the initialization sequence to start the ACPI interpreter 8900(acpi_init) prior to initialization of the PCI driver (pci_init) 8901in init/main.c. This ordering is required to support PRT and 8902facilitate other (future) enhancement. A side effect is that the 8903ACPI bus driver and certain device drivers can no longer be loaded 8904as modules. 8905 8906Modified the 'make menuconfig' options to allow PCI Interrupt 8907Routing support to be included without the ACPI Bus and other 8908device drivers. 8909 8910 3) ASL Compiler, version X2033: 8911 8912Fixed some issues with the use of the new CopyObject and 8913DataTableRegion operators. Both are fully functional. 8914 8915 ---------------------------------------- 8916Summary of changes for this label: 11_20_01 8917 8918 20 November 2001. Summary of changes for this release. 8919 8920 1) ACPI CA Core Subsystem: 8921 8922Updated Index support to match ACPI 2.0 semantics. Storing a 8923Integer, String, or Buffer to an Index of a Buffer will store only 8924the least-significant byte of the source to the Indexed buffer 8925byte. Multiple writes are not performed. 8926 8927Fixed a problem where the access type used in an AccessAs ASL 8928operator was not recorded correctly into the field object. 8929 8930Fixed a problem where ASL Event objects were created in a 8931signalled state. Events are now created in an unsignalled state. 8932 8933The internal object cache is now purged after table loading and 8934initialization to reduce the use of dynamic kernel memory -- on 8935the assumption that object use is greatest during the parse phase 8936of the entire table (versus the run-time use of individual control 8937methods.) 8938 8939ACPI 2.0 variable-length packages are now fully operational. 8940 8941Code and Data Size: Code and Data optimizations have permitted new 8942feature development with an actual reduction in the library size. 8943Current core subsystem library sizes are shown below. These are 8944the code and data sizes for the acpica.lib produced by the 8945Microsoft Visual C++ 6.0 compiler, and these values do not include 8946any ACPI driver or OSPM code. The debug version of the code 8947includes the debug output trace mechanism and has a larger code 8948and data size. Note that these values will vary depending on the 8949efficiency of the compiler and the compiler options used during 8950generation. 8951 8952 Previous Release (11_09_01): 8953 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8954 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8955 8956 Current Release: 8957 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8958 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8959 8960 2) Linux: 8961 8962Enhanced the ACPI boot-time initialization code to allow the use 8963of Local APIC tables for processor enumeration on IA-32, and to 8964pave the way for a fully MPS-free boot (on SMP systems) in the 8965near future. This functionality replaces 8966arch/i386/kernel/acpitables.c, which was introduced in an earlier 89672.4.15-preX release. To enable this feature you must add 8968"acpi_boot=on" to the kernel command line -- see the help entry 8969for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8970the works... 8971 8972Restructured the configuration options to allow boot-time table 8973parsing support without inclusion of the ACPI Interpreter (and 8974other) code. 8975 8976NOTE: This release does not include fixes for the reported events, 8977power-down, and thermal passive cooling issues (coming soon). 8978 8979 3) ASL Compiler: 8980 8981Added additional typechecking for Fields within restricted access 8982Operation Regions. All fields within EC and CMOS regions must be 8983declared with ByteAcc. All fields withing SMBus regions must be 8984declared with the BufferAcc access type. 8985 8986Fixed a problem where the listing file output of control methods 8987no longer interleaved the actual AML code with the ASL source 8988code. 8989 8990 8991 8992 8993---------------------------------------- 8994Summary of changes for this label: 11_09_01 8995 89961) ACPI CA Core Subsystem: 8997 8998Implemented ACPI 2.0-defined support for writes to fields with a 8999Buffer, String, or Integer source operand that is smaller than the 9000target field. In these cases, the source operand is zero-extended 9001to fill the target field. 9002 9003Fixed a problem where a Field starting bit offset (within the 9004parent operation region) was calculated incorrectly if the 9005 9006alignment of the field differed from the access width. This 9007affected CreateWordField, CreateDwordField, CreateQwordField, and 9008possibly other fields that use the "AccessAny" keyword. 9009 9010Fixed a problem introduced in the 11_02_01 release where indirect 9011stores through method arguments did not operate correctly. 9012 90132) Linux: 9014 9015Implemented boot-time ACPI table parsing support 9016(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 9017facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 9018legacy BIOS interfaces (e.g. MPS) for the configuration of system 9019processors, memory, and interrupts during setup_arch(). Note that 9020this patch does not include the required architecture-specific 9021changes required to apply this information -- subsequent patches 9022will be posted for both IA32 and IA64 to achieve this. 9023 9024Added low-level sleep support for IA32 platforms, courtesy of Pat 9025Mochel. This allows IA32 systems to transition to/from various 9026sleeping states (e.g. S1, S3), although the lack of a centralized 9027driver model and power-manageable drivers will prevent its 9028(successful) use on most systems. 9029 9030Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 9031submenu, unified IA32 and IA64 options, added new "Boot using ACPI 9032tables" option, etc. 9033 9034Increased the default timeout for the EC driver from 1ms to 10ms 9035(1000 cycles of 10us) to try to address AE_TIME errors during EC 9036transactions. 9037 9038 ---------------------------------------- 9039Summary of changes for this label: 11_02_01 9040 90411) ACPI CA Core Subsystem: 9042 9043ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 9044(QWordAcc keyword). All ACPI 2.0 64-bit support is now 9045implemented. 9046 9047OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 9048changes to support ACPI 2.0 Qword field access. Read/Write 9049PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 9050accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 9051the value parameter for the address space handler interface is now 9052an ACPI_INTEGER. OSL implementations of these interfaces must now 9053handle the case where the Width parameter is 64. 9054 9055Index Fields: Fixed a problem where unaligned bit assembly and 9056disassembly for IndexFields was not supported correctly. 9057 9058Index and Bank Fields: Nested Index and Bank Fields are now 9059supported. During field access, a check is performed to ensure 9060that the value written to an Index or Bank register is not out of 9061the range of the register. The Index (or Bank) register is 9062written before each access to the field data. Future support will 9063include allowing individual IndexFields to be wider than the 9064DataRegister width. 9065 9066Fields: Fixed a problem where the AML interpreter was incorrectly 9067attempting to write beyond the end of a Field/OpRegion. This was 9068a boundary case that occurred when a DWORD field was written to a 9069BYTE access OpRegion, forcing multiple writes and causing the 9070interpreter to write one datum too many. 9071 9072Fields: Fixed a problem with Field/OpRegion access where the 9073starting bit address of a field was incorrectly calculated if the 9074current access type was wider than a byte (WordAcc, DwordAcc, or 9075QwordAcc). 9076 9077Fields: Fixed a problem where forward references to individual 9078FieldUnits (individual Field names within a Field definition) were 9079not resolved during the AML table load. 9080 9081Fields: Fixed a problem where forward references from a Field 9082definition to the parent Operation Region definition were not 9083resolved during the AML table load. 9084 9085Fields: Duplicate FieldUnit names within a scope are now detected 9086during AML table load. 9087 9088Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9089returned an incorrect name for the root node. 9090 9091Code and Data Size: Code and Data optimizations have permitted new 9092feature development with an actual reduction in the library size. 9093Current core subsystem library sizes are shown below. These are 9094the code and data sizes for the acpica.lib produced by the 9095Microsoft Visual C++ 6.0 compiler, and these values do not include 9096any ACPI driver or OSPM code. The debug version of the code 9097includes the debug output trace mechanism and has a larger code 9098and data size. Note that these values will vary depending on the 9099efficiency of the compiler and the compiler options used during 9100generation. 9101 9102 Previous Release (10_18_01): 9103 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9104 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9105 9106 Current Release: 9107 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9108 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9109 9110 2) Linux: 9111 9112Improved /proc processor output (Pavel Machek) Re-added 9113MODULE_LICENSE("GPL") to all modules. 9114 9115 3) ASL Compiler version X2030: 9116 9117Duplicate FieldUnit names within a scope are now detected and 9118flagged as errors. 9119 9120 4) Documentation: 9121 9122Programmer Reference updated to reflect OSL and address space 9123handler interface changes described above. 9124 9125---------------------------------------- 9126Summary of changes for this label: 10_18_01 9127 9128ACPI CA Core Subsystem: 9129 9130Fixed a problem with the internal object reference count mechanism 9131that occasionally caused premature object deletion. This resolves 9132all of the outstanding problem reports where an object is deleted 9133in the middle of an interpreter evaluation. Although this problem 9134only showed up in rather obscure cases, the solution to the 9135problem involved an adjustment of all reference counts involving 9136objects attached to namespace nodes. 9137 9138Fixed a problem with Field support in the interpreter where 9139writing to an aligned field whose length is an exact multiple (2 9140or greater) of the field access granularity would cause an attempt 9141to write beyond the end of the field. 9142 9143The top level AML opcode execution functions within the 9144interpreter have been renamed with a more meaningful and 9145consistent naming convention. The modules exmonad.c and 9146exdyadic.c were eliminated. New modules are exoparg1.c, 9147exoparg2.c, exoparg3.c, and exoparg6.c. 9148 9149Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9150 9151Fixed a problem where the AML debugger was causing some internal 9152objects to not be deleted during subsystem termination. 9153 9154Fixed a problem with the external AcpiEvaluateObject interface 9155where the subsystem would fault if the named object to be 9156evaluated refered to a constant such as Zero, Ones, etc. 9157 9158Fixed a problem with IndexFields and BankFields where the 9159subsystem would fault if the index, data, or bank registers were 9160not defined in the same scope as the field itself. 9161 9162Added printf format string checking for compilers that support 9163this feature. Corrected more than 50 instances of issues with 9164format specifiers within invocations of ACPI_DEBUG_PRINT 9165throughout the core subsystem code. 9166 9167The ASL "Revision" operator now returns the ACPI support level 9168implemented in the core - the value "2" since the ACPI 2.0 support 9169is more than 50% implemented. 9170 9171Enhanced the output of the AML debugger "dump namespace" command 9172to output in a more human-readable form. 9173 9174Current core subsystem library code sizes are shown below. These 9175 9176are the code and data sizes for the acpica.lib produced by the 9177Microsoft Visual C++ 6.0 compiler, and these values do not include 9178any ACPI driver or OSPM code. The debug version of the code 9179includes the full debug trace mechanism -- leading to a much 9180 9181larger code and data size. Note that these values will vary 9182depending on the efficiency of the compiler and the compiler 9183options used during generation. 9184 9185 Previous Label (09_20_01): 9186 Non-Debug Version: 65K Code, 5K Data, 70K Total 9187 Debug Version: 138K Code, 58K Data, 196K Total 9188 9189 This Label: 9190 9191 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9192 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9193 9194Linux: 9195 9196Implemented a "Bad BIOS Blacklist" to track machines that have 9197known ASL/AML problems. 9198 9199Enhanced the /proc interface for the thermal zone driver and added 9200support for _HOT (the critical suspend trip point). The 'info' 9201file now includes threshold/policy information, and allows setting 9202of _SCP (cooling preference) and _TZP (polling frequency) values 9203to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9204frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9205preference to the passive/quiet mode (if supported by the ASL). 9206 9207Implemented a workaround for a gcc bug that resuted in an OOPs 9208when loading the control method battery driver. 9209 9210 ---------------------------------------- 9211Summary of changes for this label: 09_20_01 9212 9213 ACPI CA Core Subsystem: 9214 9215The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9216modified to allow individual GPE levels to be flagged as wake- 9217enabled (i.e., these GPEs are to remain enabled when the platform 9218sleeps.) 9219 9220The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9221support wake-enabled GPEs. This means that upon entering the 9222sleep state, all GPEs that are not wake-enabled are disabled. 9223When leaving the sleep state, these GPEs are reenabled. 9224 9225A local double-precision divide/modulo module has been added to 9226enhance portability to OS kernels where a 64-bit math library is 9227not available. The new module is "utmath.c". 9228 9229Several optimizations have been made to reduce the use of CPU 9230stack. Originally over 2K, the maximum stack usage is now below 92312K at 1860 bytes (1.82k) 9232 9233Fixed a problem with the AcpiGetFirmwareTable interface where the 9234root table pointer was not mapped into a logical address properly. 9235 9236Fixed a problem where a NULL pointer was being dereferenced in the 9237interpreter code for the ASL Notify operator. 9238 9239Fixed a problem where the use of the ASL Revision operator 9240returned an error. This operator now returns the current version 9241of the ACPI CA core subsystem. 9242 9243Fixed a problem where objects passed as control method parameters 9244to AcpiEvaluateObject were always deleted at method termination. 9245However, these objects may end up being stored into the namespace 9246by the called method. The object reference count mechanism was 9247applied to these objects instead of a force delete. 9248 9249Fixed a problem where static strings or buffers (contained in the 9250AML code) that are declared as package elements within the ASL 9251code could cause a fault because the interpreter would attempt to 9252delete them. These objects are now marked with the "static 9253object" flag to prevent any attempt to delete them. 9254 9255Implemented an interpreter optimization to use operands directly 9256from the state object instead of extracting the operands to local 9257variables. This reduces stack use and code size, and improves 9258performance. 9259 9260The module exxface.c was eliminated as it was an unnecessary extra 9261layer of code. 9262 9263Current core subsystem library code sizes are shown below. These 9264are the code and data sizes for the acpica.lib produced by the 9265Microsoft Visual C++ 6.0 compiler, and these values do not include 9266any ACPI driver or OSPM code. The debug version of the code 9267includes the full debug trace mechanism -- leading to a much 9268larger code and data size. Note that these values will vary 9269depending on the efficiency of the compiler and the compiler 9270options used during generation. 9271 9272 Non-Debug Version: 65K Code, 5K Data, 70K Total 9273(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9274Total (Previously 195K) 9275 9276Linux: 9277 9278Support for ACPI 2.0 64-bit integers has been added. All ACPI 9279Integer objects are now 64 bits wide 9280 9281All Acpi data types and structures are now in lower case. Only 9282Acpi macros are upper case for differentiation. 9283 9284 Documentation: 9285 9286Changes to the external interfaces as described above. 9287 9288 ---------------------------------------- 9289Summary of changes for this label: 08_31_01 9290 9291 ACPI CA Core Subsystem: 9292 9293A bug with interpreter implementation of the ASL Divide operator 9294was found and fixed. The implicit function return value (not the 9295explicit store operands) was returning the remainder instead of 9296the quotient. This was a longstanding bug and it fixes several 9297known outstanding issues on various platforms. 9298 9299The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9300been further optimized for size. There are 700 invocations of the 9301DEBUG_PRINT macro alone, so each optimization reduces the size of 9302the debug version of the subsystem significantly. 9303 9304A stack trace mechanism has been implemented. The maximum stack 9305usage is about 2K on 32-bit platforms. The debugger command "stat 9306stack" will display the current maximum stack usage. 9307 9308All public symbols and global variables within the subsystem are 9309now prefixed with the string "Acpi". This keeps all of the 9310symbols grouped together in a kernel map, and avoids conflicts 9311with other kernel subsystems. 9312 9313Most of the internal fixed lookup tables have been moved into the 9314code segment via the const operator. 9315 9316Several enhancements have been made to the interpreter to both 9317reduce the code size and improve performance. 9318 9319Current core subsystem library code sizes are shown below. These 9320are the code and data sizes for the acpica.lib produced by the 9321Microsoft Visual C++ 6.0 compiler, and these values do not include 9322any ACPI driver or OSPM code. The debug version of the code 9323includes the full debug trace mechanism which contains over 700 9324invocations of the DEBUG_PRINT macro, 500 function entry macro 9325invocations, and over 900 function exit macro invocations -- 9326leading to a much larger code and data size. Note that these 9327values will vary depending on the efficiency of the compiler and 9328the compiler options used during generation. 9329 9330 Non-Debug Version: 64K Code, 5K Data, 69K Total 9331Debug Version: 137K Code, 58K Data, 195K Total 9332 9333 Linux: 9334 9335Implemented wbinvd() macro, pending a kernel-wide definition. 9336 9337Fixed /proc/acpi/event to handle poll() and short reads. 9338 9339 ASL Compiler, version X2026: 9340 9341Fixed a problem introduced in the previous label where the AML 9342 9343code emitted for package objects produced packages with zero 9344length. 9345 9346 ---------------------------------------- 9347Summary of changes for this label: 08_16_01 9348 9349ACPI CA Core Subsystem: 9350 9351The following ACPI 2.0 ASL operators have been implemented in the 9352AML interpreter (These are already supported by the Intel ASL 9353compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9354ToBuffer. Support for 64-bit AML constants is implemented in the 9355AML parser, debugger, and disassembler. 9356 9357The internal memory tracking mechanism (leak detection code) has 9358been upgraded to reduce the memory overhead (a separate tracking 9359block is no longer allocated for each memory allocation), and now 9360supports all of the internal object caches. 9361 9362The data structures and code for the internal object caches have 9363been coelesced and optimized so that there is a single cache and 9364memory list data structure and a single group of functions that 9365implement generic cache management. This has reduced the code 9366size in both the debug and release versions of the subsystem. 9367 9368The DEBUG_PRINT macro(s) have been optimized for size and replaced 9369by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9370different, because it generates a single call to an internal 9371function. This results in a savings of about 90 bytes per 9372invocation, resulting in an overall code and data savings of about 937316% in the debug version of the subsystem. 9374 9375 Linux: 9376 9377Fixed C3 disk corruption problems and re-enabled C3 on supporting 9378machines. 9379 9380Integrated low-level sleep code by Patrick Mochel. 9381 9382Further tweaked source code Linuxization. 9383 9384Other minor fixes. 9385 9386 ASL Compiler: 9387 9388Support for ACPI 2.0 variable length packages is fixed/completed. 9389 9390Fixed a problem where the optional length parameter for the ACPI 93912.0 ToString operator. 9392 9393Fixed multiple extraneous error messages when a syntax error is 9394detected within the declaration line of a control method. 9395 9396 ---------------------------------------- 9397Summary of changes for this label: 07_17_01 9398 9399ACPI CA Core Subsystem: 9400 9401Added a new interface named AcpiGetFirmwareTable to obtain any 9402ACPI table via the ACPI signature. The interface can be called at 9403any time during kernel initialization, even before the kernel 9404virtual memory manager is initialized and paging is enabled. This 9405allows kernel subsystems to obtain ACPI tables very early, even 9406before the ACPI CA subsystem is initialized. 9407 9408Fixed a problem where Fields defined with the AnyAcc attribute 9409could be resolved to the incorrect address under the following 9410conditions: 1) the field width is larger than 8 bits and 2) the 9411parent operation region is not defined on a DWORD boundary. 9412 9413Fixed a problem where the interpreter is not being locked during 9414namespace initialization (during execution of the _INI control 9415methods), causing an error when an attempt is made to release it 9416later. 9417 9418ACPI 2.0 support in the AML Interpreter has begun and will be 9419ongoing throughout the rest of this year. In this label, The Mod 9420operator is implemented. 9421 9422Added a new data type to contain full PCI addresses named 9423ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9424and Function values. 9425 9426 Linux: 9427 9428Enhanced the Linux version of the source code to change most 9429capitalized ACPI type names to lowercase. For example, all 9430instances of ACPI_STATUS are changed to acpi_status. This will 9431result in a large diff, but the change is strictly cosmetic and 9432aligns the CA code closer to the Linux coding standard. 9433 9434OSL Interfaces: 9435 9436The interfaces to the PCI configuration space have been changed to 9437add the PCI Segment number and to split the single 32-bit combined 9438DeviceFunction field into two 16-bit fields. This was 9439accomplished by moving the four values that define an address in 9440PCI configuration space (segment, bus, device, and function) to 9441the new ACPI_PCI_ID structure. 9442 9443The changes to the PCI configuration space interfaces led to a 9444reexamination of the complete set of address space access 9445interfaces for PCI, I/O, and Memory. The previously existing 18 9446interfaces have proven difficult to maintain (any small change 9447must be propagated across at least 6 interfaces) and do not easily 9448allow for future expansion to 64 bits if necessary. Also, on some 9449systems, it would not be appropriate to demultiplex the access 9450width (8, 16, 32,or 64) before calling the OSL if the 9451corresponding native OS interfaces contain a similar access width 9452parameter. For these reasons, the 18 address space interfaces 9453have been replaced by these 6 new ones: 9454 9455AcpiOsReadPciConfiguration 9456AcpiOsWritePciConfiguration 9457AcpiOsReadMemory 9458AcpiOsWriteMemory 9459AcpiOsReadPort 9460AcpiOsWritePort 9461 9462Added a new interface named AcpiOsGetRootPointer to allow the OSL 9463to perform the platform and/or OS-specific actions necessary to 9464obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9465interface will simply call down to the CA core to perform the low- 9466memory search for the table. On IA-64, the RSDP is obtained from 9467EFI. Migrating this interface to the OSL allows the CA core to 9468 9469remain OS and platform independent. 9470 9471Added a new interface named AcpiOsSignal to provide a generic 9472"function code and pointer" interface for various miscellaneous 9473signals and notifications that must be made to the host OS. The 9474first such signals are intended to support the ASL Fatal and 9475Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9476interface has been obsoleted. 9477 9478The definition of the AcpiFormatException interface has been 9479changed to simplify its use. The caller no longer must supply a 9480buffer to the call; A pointer to a const string is now returned 9481directly. This allows the call to be easily used in printf 9482statements, etc. since the caller does not have to manage a local 9483buffer. 9484 9485 9486 ASL Compiler, Version X2025: 9487 9488The ACPI 2.0 Switch/Case/Default operators have been implemented 9489and are fully functional. They will work with all ACPI 1.0 9490interpreters, since the operators are simply translated to If/Else 9491pairs. 9492 9493The ACPI 2.0 ElseIf operator is implemented and will also work 9494with 1.0 interpreters, for the same reason. 9495 9496Implemented support for ACPI 2.0 variable-length packages. These 9497packages have a separate opcode, and their size is determined by 9498the interpreter at run-time. 9499 9500Documentation The ACPI CA Programmer Reference has been updated to 9501reflect the new interfaces and changes to existing interfaces. 9502 9503 ------------------------------------------ 9504Summary of changes for this label: 06_15_01 9505 9506 ACPI CA Core Subsystem: 9507 9508Fixed a problem where a DWORD-accessed field within a Buffer 9509object would get its byte address inadvertently rounded down to 9510the nearest DWORD. Buffers are always Byte-accessible. 9511 9512 ASL Compiler, version X2024: 9513 9514Fixed a problem where the Switch() operator would either fault or 9515hang the compiler. Note however, that the AML code for this ACPI 95162.0 operator is not yet implemented. 9517 9518Compiler uses the new AcpiOsGetTimer interface to obtain compile 9519timings. 9520 9521Implementation of the CreateField operator automatically converts 9522a reference to a named field within a resource descriptor from a 9523byte offset to a bit offset if required. 9524 9525Added some missing named fields from the resource descriptor 9526support. These are the names that are automatically created by the 9527compiler to reference fields within a descriptor. They are only 9528valid at compile time and are not passed through to the AML 9529interpreter. 9530 9531Resource descriptor named fields are now typed as Integers and 9532subject to compile-time typechecking when used in expressions. 9533 9534 ------------------------------------------ 9535Summary of changes for this label: 05_18_01 9536 9537 ACPI CA Core Subsystem: 9538 9539Fixed a couple of problems in the Field support code where bits 9540from adjacent fields could be returned along with the proper field 9541bits. Restructured the field support code to improve performance, 9542readability and maintainability. 9543 9544New DEBUG_PRINTP macro automatically inserts the procedure name 9545into the output, saving hundreds of copies of procedure name 9546strings within the source, shrinking the memory footprint of the 9547debug version of the core subsystem. 9548 9549 Source Code Structure: 9550 9551The source code directory tree was restructured to reflect the 9552current organization of the component architecture. Some files 9553and directories have been moved and/or renamed. 9554 9555 Linux: 9556 9557Fixed leaking kacpidpc processes. 9558 9559Fixed queueing event data even when /proc/acpi/event is not 9560opened. 9561 9562 ASL Compiler, version X2020: 9563 9564Memory allocation performance enhancement - over 24X compile time 9565improvement on large ASL files. Parse nodes and namestring 9566buffers are now allocated from a large internal compiler buffer. 9567 9568The temporary .SRC file is deleted unless the "-s" option is 9569specified 9570 9571The "-d" debug output option now sends all output to the .DBG file 9572instead of the console. 9573 9574"External" second parameter is now optional 9575 9576"ElseIf" syntax now properly allows the predicate 9577 9578Last operand to "Load" now recognized as a Target operand 9579 9580Debug object can now be used anywhere as a normal object. 9581 9582ResourceTemplate now returns an object of type BUFFER 9583 9584EISAID now returns an object of type INTEGER 9585 9586"Index" now works with a STRING operand 9587 9588"LoadTable" now accepts optional parameters 9589 9590"ToString" length parameter is now optional 9591 9592"Interrupt (ResourceType," parse error fixed. 9593 9594"Register" with a user-defined region space parse error fixed 9595 9596Escaped backslash at the end of a string ("\\") scan/parse error 9597fixed 9598 9599"Revision" is now an object of type INTEGER. 9600 9601 9602 9603------------------------------------------ 9604Summary of changes for this label: 05_02_01 9605 9606Linux: 9607 9608/proc/acpi/event now blocks properly. 9609 9610Removed /proc/sys/acpi. You can still dump your DSDT from 9611/proc/acpi/dsdt. 9612 9613 ACPI CA Core Subsystem: 9614 9615Fixed a problem introduced in the previous label where some of the 9616"small" resource descriptor types were not recognized. 9617 9618Improved error messages for the case where an ASL Field is outside 9619the range of the parent operation region. 9620 9621 ASL Compiler, version X2018: 9622 9623 9624Added error detection for ASL Fields that extend beyond the length 9625of the parent operation region (only if the length of the region 9626is known at compile time.) This includes fields that have a 9627minimum access width that is smaller than the parent region, and 9628individual field units that are partially or entirely beyond the 9629extent of the parent. 9630 9631 9632 9633------------------------------------------ 9634Summary of changes for this label: 04_27_01 9635 9636 ACPI CA Core Subsystem: 9637 9638Fixed a problem where the namespace mutex could be released at the 9639wrong time during execution of AcpiRemoveAddressSpaceHandler. 9640 9641Added optional thread ID output for debug traces, to simplify 9642debugging of multiple threads. Added context switch notification 9643when the debug code realizes that a different thread is now 9644executing ACPI code. 9645 9646Some additional external data types have been prefixed with the 9647string "ACPI_" for consistency. This may effect existing code. 9648The data types affected are the external callback typedefs - e.g., 9649 9650WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9651 9652 Linux: 9653 9654Fixed an issue with the OSL semaphore implementation where a 9655thread was waking up with an error from receiving a SIGCHLD 9656signal. 9657 9658Linux version of ACPI CA now uses the system C library for string 9659manipulation routines instead of a local implementation. 9660 9661Cleaned up comments and removed TBDs. 9662 9663 ASL Compiler, version X2017: 9664 9665Enhanced error detection and reporting for all file I/O 9666operations. 9667 9668 Documentation: 9669 9670Programmer Reference updated to version 1.06. 9671 9672 9673 9674------------------------------------------ 9675Summary of changes for this label: 04_13_01 9676 9677 ACPI CA Core Subsystem: 9678 9679Restructured support for BufferFields and RegionFields. 9680BankFields support is now fully operational. All known 32-bit 9681limitations on field sizes have been removed. Both BufferFields 9682and (Operation) RegionFields are now supported by the same field 9683management code. 9684 9685Resource support now supports QWORD address and IO resources. The 968616/32/64 bit address structures and the Extended IRQ structure 9687have been changed to properly handle Source Resource strings. 9688 9689A ThreadId of -1 is now used to indicate a "mutex not acquired" 9690condition internally and must never be returned by AcpiOsThreadId. 9691This reserved value was changed from 0 since Unix systems allow a 9692thread ID of 0. 9693 9694Linux: 9695 9696Driver code reorganized to enhance portability 9697 9698Added a kernel configuration option to control ACPI_DEBUG 9699 9700Fixed the EC driver to honor _GLK. 9701 9702ASL Compiler, version X2016: 9703 9704Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9705address space was set to 0, not 0x7f as it should be. 9706 9707 ------------------------------------------ 9708Summary of changes for this label: 03_13_01 9709 9710 ACPI CA Core Subsystem: 9711 9712During ACPI initialization, the _SB_._INI method is now run if 9713present. 9714 9715Notify handler fix - notifies are deferred until the parent method 9716completes execution. This fixes the "mutex already acquired" 9717issue seen occasionally. 9718 9719Part of the "implicit conversion" rules in ACPI 2.0 have been 9720found to cause compatibility problems with existing ASL/AML. The 9721convert "result-to-target-type" implementation has been removed 9722for stores to method Args and Locals. Source operand conversion 9723is still fully implemented. Possible changes to ACPI 2.0 9724specification pending. 9725 9726Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9727length. 9728 9729Fix for compiler warnings for 64-bit compiles. 9730 9731 Linux: 9732 9733/proc output aligned for easier parsing. 9734 9735Release-version compile problem fixed. 9736 9737New kernel configuration options documented in Configure.help. 9738 9739IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9740context" message. 9741 9742 OSPM: 9743 9744Power resource driver integrated with bus manager. 9745 9746Fixed kernel fault during active cooling for thermal zones. 9747 9748Source Code: 9749 9750The source code tree has been restructured. 9751 9752 9753 9754------------------------------------------ 9755Summary of changes for this label: 03_02_01 9756 9757 Linux OS Services Layer (OSL): 9758 9759Major revision of all Linux-specific code. 9760 9761Modularized all ACPI-specific drivers. 9762 9763Added new thermal zone and power resource drivers. 9764 9765Revamped /proc interface (new functionality is under /proc/acpi). 9766 9767New kernel configuration options. 9768 9769 Linux known issues: 9770 9771New kernel configuration options not documented in Configure.help 9772yet. 9773 9774 9775Module dependencies not currently implemented. If used, they 9776should be loaded in this order: busmgr, power, ec, system, 9777processor, battery, ac_adapter, button, thermal. 9778 9779Modules will not load if CONFIG_MODVERSION is set. 9780 9781IBM 600E - entering S5 may reboot instead of shutting down. 9782 9783IBM 600E - Sleep button may generate "Invalid <NULL> context" 9784message. 9785 9786Some systems may fail with "execution mutex already acquired" 9787message. 9788 9789 ACPI CA Core Subsystem: 9790 9791Added a new OSL Interface, AcpiOsGetThreadId. This was required 9792for the deadlock detection code. Defined to return a non-zero, 32- 9793bit thread ID for the currently executing thread. May be a non- 9794zero constant integer on single-thread systems. 9795 9796Implemented deadlock detection for internal subsystem mutexes. We 9797may add conditional compilation for this code (debug only) later. 9798 9799ASL/AML Mutex object semantics are now fully supported. This 9800includes multiple acquires/releases by owner and support for the 9801 9802Mutex SyncLevel parameter. 9803 9804A new "Force Release" mechanism automatically frees all ASL 9805Mutexes that have been acquired but not released when a thread 9806exits the interpreter. This forces conformance to the ACPI spec 9807("All mutexes must be released when an invocation exits") and 9808prevents deadlocked ASL threads. This mechanism can be expanded 9809(later) to monitor other resource acquisitions if OEM ASL code 9810continues to misbehave (which it will). 9811 9812Several new ACPI exception codes have been added for the Mutex 9813support. 9814 9815Recursive method calls are now allowed and supported (the ACPI 9816spec does in fact allow recursive method calls.) The number of 9817recursive calls is subject to the restrictions imposed by the 9818SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9819parameter. 9820 9821Implemented support for the SyncLevel parameter for control 9822methods (ACPI 2.0 feature) 9823 9824Fixed a deadlock problem when multiple threads attempted to use 9825the interpreter. 9826 9827Fixed a problem where the string length of a String package 9828element was not always set in a package returned from 9829AcpiEvaluateObject. 9830 9831Fixed a problem where the length of a String package element was 9832not always included in the length of the overall package returned 9833from AcpiEvaluateObject. 9834 9835Added external interfaces (Acpi*) to the ACPI debug memory 9836manager. This manager keeps a list of all outstanding 9837allocations, and can therefore detect memory leaks and attempts to 9838free memory blocks more than once. Useful for code such as the 9839power manager, etc. May not be appropriate for device drivers. 9840Performance with the debug code enabled is slow. 9841 9842The ACPI Global Lock is now an optional hardware element. 9843 9844 ASL Compiler Version X2015: 9845 9846Integrated changes to allow the compiler to be generated on 9847multiple platforms. 9848 9849Linux makefile added to generate the compiler on Linux 9850 9851 Source Code: 9852 9853All platform-specific headers have been moved to their own 9854subdirectory, Include/Platform. 9855 9856New source file added, Interpreter/ammutex.c 9857 9858New header file, Include/acstruct.h 9859 9860 Documentation: 9861 9862The programmer reference has been updated for the following new 9863interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9864 9865 ------------------------------------------ 9866Summary of changes for this label: 02_08_01 9867 9868Core ACPI CA Subsystem: Fixed a problem where an error was 9869incorrectly returned if the return resource buffer was larger than 9870the actual data (in the resource interfaces). 9871 9872References to named objects within packages are resolved to the 9873 9874full pathname string before packages are returned directly (via 9875the AcpiEvaluateObject interface) or indirectly via the resource 9876interfaces. 9877 9878Linux OS Services Layer (OSL): 9879 9880Improved /proc battery interface. 9881 9882 9883Added C-state debugging output and other miscellaneous fixes. 9884 9885ASL Compiler Version X2014: 9886 9887All defined method arguments can now be used as local variables, 9888including the ones that are not actually passed in as parameters. 9889The compiler tracks initialization of the arguments and issues an 9890exception if they are used without prior assignment (just like 9891locals). 9892 9893The -o option now specifies a filename prefix that is used for all 9894output files, including the AML output file. Otherwise, the 9895default behavior is as follows: 1) the AML goes to the file 9896specified in the DSDT. 2) all other output files use the input 9897source filename as the base. 9898 9899 ------------------------------------------ 9900Summary of changes for this label: 01_25_01 9901 9902Core ACPI CA Subsystem: Restructured the implementation of object 9903store support within the interpreter. This includes support for 9904the Store operator as well as any ASL operators that include a 9905target operand. 9906 9907Partially implemented support for Implicit Result-to-Target 9908conversion. This is when a result object is converted on the fly 9909to the type of an existing target object. Completion of this 9910support is pending further analysis of the ACPI specification 9911concerning this matter. 9912 9913CPU-specific code has been removed from the subsystem (hardware 9914directory). 9915 9916New Power Management Timer functions added 9917 9918Linux OS Services Layer (OSL): Moved system state transition code 9919to the core, fixed it, and modified Linux OSL accordingly. 9920 9921Fixed C2 and C3 latency calculations. 9922 9923 9924We no longer use the compilation date for the version message on 9925initialization, but retrieve the version from AcpiGetSystemInfo(). 9926 9927Incorporated for fix Sony VAIO machines. 9928 9929Documentation: The Programmer Reference has been updated and 9930reformatted. 9931 9932 9933ASL Compiler: Version X2013: Fixed a problem where the line 9934numbering and error reporting could get out of sync in the 9935presence of multiple include files. 9936 9937 ------------------------------------------ 9938Summary of changes for this label: 01_15_01 9939 9940Core ACPI CA Subsystem: 9941 9942Implemented support for type conversions in the execution of the 9943ASL Concatenate operator (The second operand is converted to 9944match the type of the first operand before concatenation.) 9945 9946Support for implicit source operand conversion is partially 9947implemented. The ASL source operand types Integer, Buffer, and 9948String are freely interchangeable for most ASL operators and are 9949converted by the interpreter on the fly as required. Implicit 9950Target operand conversion (where the result is converted to the 9951target type before storing) is not yet implemented. 9952 9953Support for 32-bit and 64-bit BCD integers is implemented. 9954 9955Problem fixed where a field read on an aligned field could cause a 9956read past the end of the field. 9957 9958New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9959does not return a value, but the caller expects one. (The ASL 9960compiler flags this as a warning.) 9961 9962ASL Compiler: 9963 9964Version X2011: 99651. Static typechecking of all operands is implemented. This 9966prevents the use of invalid objects (such as using a Package where 9967an Integer is required) at compile time instead of at interpreter 9968run-time. 99692. The ASL source line is printed with ALL errors and warnings. 99703. Bug fix for source EOF without final linefeed. 99714. Debug option is split into a parse trace and a namespace trace. 99725. Namespace output option (-n) includes initial values for 9973integers and strings. 99746. Parse-only option added for quick syntax checking. 99757. Compiler checks for duplicate ACPI name declarations 9976 9977Version X2012: 99781. Relaxed typechecking to allow interchangeability between 9979strings, integers, and buffers. These types are now converted by 9980the interpreter at runtime. 99812. Compiler reports time taken by each internal subsystem in the 9982debug output file. 9983 9984 9985 ------------------------------------------ 9986Summary of changes for this label: 12_14_00 9987 9988ASL Compiler: 9989 9990This is the first official release of the compiler. Since the 9991compiler requires elements of the Core Subsystem, this label 9992synchronizes everything. 9993 9994------------------------------------------ 9995Summary of changes for this label: 12_08_00 9996 9997 9998Fixed a problem where named references within the ASL definition 9999of both OperationRegions and CreateXXXFields did not work 10000properly. The symptom was an AE_AML_OPERAND_TYPE during 10001initialization of the region/field. This is similar (but not 10002related internally) to the problem that was fixed in the last 10003label. 10004 10005Implemented both 32-bit and 64-bit support for the BCD ASL 10006functions ToBCD and FromBCD. 10007 10008Updated all legal headers to include "2000" in the copyright 10009years. 10010 10011 ------------------------------------------ 10012Summary of changes for this label: 12_01_00 10013 10014Fixed a problem where method invocations within the ASL definition 10015of both OperationRegions and CreateXXXFields did not work 10016properly. The symptom was an AE_AML_OPERAND_TYPE during 10017initialization of the region/field: 10018 10019 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 10020[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 10021(0x3005) 10022 10023Fixed a problem where operators with more than one nested 10024subexpression would fail. The symptoms were varied, by mostly 10025AE_AML_OPERAND_TYPE errors. This was actually a rather serious 10026problem that has gone unnoticed until now. 10027 10028 Subtract (Add (1,2), Multiply (3,4)) 10029 10030Fixed a problem where AcpiGetHandle didn't quite get fixed in the 10031previous build (The prefix part of a relative path was handled 10032incorrectly). 10033 10034Fixed a problem where Operation Region initialization failed if 10035the operation region name was a "namepath" instead of a simple 10036"nameseg". Symptom was an AE_NO_OPERAND error. 10037 10038Fixed a problem where an assignment to a local variable via the 10039indirect RefOf mechanism only worked for the first such 10040assignment. Subsequent assignments were ignored. 10041 10042 ------------------------------------------ 10043Summary of changes for this label: 11_15_00 10044 10045ACPI 2.0 table support with backwards support for ACPI 1.0 and the 100460.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 10047the AML interpreter does NOT have support for the new 2.0 ASL 10048grammar terms at this time. 10049 10050All ACPI hardware access is via the GAS structures in the ACPI 2.0 10051FADT. 10052 10053All physical memory addresses across all platforms are now 64 bits 10054wide. Logical address width remains dependent on the platform 10055(i.e., "void *"). 10056 10057AcpiOsMapMemory interface changed to a 64-bit physical address. 10058 10059The AML interpreter integer size is now 64 bits, as per the ACPI 100602.0 specification. 10061 10062For backwards compatibility with ACPI 1.0, ACPI tables with a 10063revision number less than 2 use 32-bit integers only. 10064 10065Fixed a problem where the evaluation of OpRegion operands did not 10066always resolve them to numbers properly. 10067 10068------------------------------------------ 10069Summary of changes for this label: 10_20_00 10070 10071Fix for CBN_._STA issue. This fix will allow correct access to 10072CBN_ OpRegions when the _STA returns 0x8. 10073 10074Support to convert ACPI constants (Ones, Zeros, One) to actual 10075values before a package object is returned 10076 10077Fix for method call as predicate to if/while construct causing 10078incorrect if/while behavior 10079 10080Fix for Else block package lengths sometimes calculated wrong (if 10081block > 63 bytes) 10082 10083Fix for Processor object length field, was always zero 10084 10085Table load abort if FACP sanity check fails 10086 10087Fix for problem with Scope(name) if name already exists 10088 10089Warning emitted if a named object referenced cannot be found 10090(resolved) during method execution. 10091 10092 10093 10094 10095 10096------------------------------------------ 10097Summary of changes for this label: 9_29_00 10098 10099New table initialization interfaces: AcpiInitializeSubsystem no 10100longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10101necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10102>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10103AcpiLoadTables 10104 10105Note: These interface changes require changes to all existing OSDs 10106 10107The PCI_Config default address space handler is always installed 10108at the root namespace object. 10109 10110------------------------------------------- 10111Summary of changes for this label: 09_15_00 10112 10113The new initialization architecture is implemented. New 10114interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10115AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10116 10117(Namespace is automatically loaded when a table is loaded) 10118 10119The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1012052 bytes to 32 bytes. There is usually one of these for every 10121namespace object, so the memory savings is significant. 10122 10123Implemented just-in-time evaluation of the CreateField operators. 10124 10125Bug fixes for IA-64 support have been integrated. 10126 10127Additional code review comments have been implemented 10128 10129The so-called "third pass parse" has been replaced by a final walk 10130through the namespace to initialize all operation regions (address 10131spaces) and fields that have not yet been initialized during the 10132execution of the various _INI and REG methods. 10133 10134New file - namespace/nsinit.c 10135 10136------------------------------------------- 10137Summary of changes for this label: 09_01_00 10138 10139Namespace manager data structures have been reworked to change the 10140primary object from a table to a single object. This has 10141resulted in dynamic memory savings of 3X within the namespace and 101422X overall in the ACPI CA subsystem. 10143 10144Fixed problem where the call to AcpiEvFindPciRootBuses was 10145inadvertently left commented out. 10146 10147Reduced the warning count when generating the source with the GCC 10148compiler. 10149 10150Revision numbers added to each module header showing the 10151SourceSafe version of the file. Please refer to this version 10152number when giving us feedback or comments on individual modules. 10153 10154The main object types within the subsystem have been renamed to 10155clarify their purpose: 10156 10157ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10158ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10159ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10160 10161NOTE: no changes to the initialization sequence are included in 10162this label. 10163 10164------------------------------------------- 10165Summary of changes for this label: 08_23_00 10166 10167Fixed problem where TerminateControlMethod was being called 10168multiple times per method 10169 10170Fixed debugger problem where single stepping caused a semaphore to 10171be oversignalled 10172 10173Improved performance through additional parse object caching - 10174added ACPI_EXTENDED_OP type 10175 10176------------------------------------------- 10177Summary of changes for this label: 08_10_00 10178 10179Parser/Interpreter integration: Eliminated the creation of 10180complete parse trees for ACPI tables and control methods. 10181Instead, parse subtrees are created and then deleted as soon as 10182they are processed (Either entered into the namespace or executed 10183by the interpreter). This reduces the use of dynamic kernel 10184memory significantly. (about 10X) 10185 10186Exception codes broken into classes and renumbered. Be sure to 10187recompile all code that includes acexcep.h. Hopefully we won't 10188have to renumber the codes again now that they are split into 10189classes (environment, programmer, AML code, ACPI table, and 10190internal). 10191 10192Fixed some additional alignment issues in the Resource Manager 10193subcomponent 10194 10195Implemented semaphore tracking in the AcpiExec utility, and fixed 10196several places where mutexes/semaphores were being unlocked 10197without a corresponding lock operation. There are no known 10198semaphore or mutex "leaks" at this time. 10199 10200Fixed the case where an ASL Return operator is used to return an 10201unnamed package. 10202 10203------------------------------------------- 10204Summary of changes for this label: 07_28_00 10205 10206Fixed a problem with the way addresses were calculated in 10207AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10208manifested itself when a Field was created with WordAccess or 10209DwordAccess, but the field unit defined within the Field was less 10210 10211than a Word or Dword. 10212 10213Fixed a problem in AmlDumpOperands() module's loop to pull 10214operands off of the operand stack to display information. The 10215problem manifested itself as a TLB error on 64-bit systems when 10216accessing an operand stack with two or more operands. 10217 10218Fixed a problem with the PCI configuration space handlers where 10219context was getting confused between accesses. This required a 10220change to the generic address space handler and address space 10221setup definitions. Handlers now get both a global handler context 10222(this is the one passed in by the user when executing 10223AcpiInstallAddressSpaceHandler() and a specific region context 10224that is unique to each region (For example, the _ADR, _SEG and 10225_BBN values associated with a specific region). The generic 10226function definitions have changed to the following: 10227 10228typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10229UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10230*HandlerContext, // This used to be void *Context void 10231*RegionContext); // This is an additional parameter 10232 10233typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10234RegionHandle, UINT32 Function, void *HandlerContext, void 10235**RegionContext); // This used to be **ReturnContext 10236 10237------------------------------------------- 10238Summary of changes for this label: 07_21_00 10239 10240Major file consolidation and rename. All files within the 10241interpreter have been renamed as well as most header files. This 10242was done to prevent collisions with existing files in the host 10243OSs -- filenames such as "config.h" and "global.h" seem to be 10244quite common. The VC project files have been updated. All 10245makefiles will require modification. 10246 10247The parser/interpreter integration continues in Phase 5 with the 10248implementation of a complete 2-pass parse (the AML is parsed 10249twice) for each table; This avoids the construction of a huge 10250parse tree and therefore reduces the amount of dynamic memory 10251required by the subsystem. Greater use of the parse object cache 10252means that performance is unaffected. 10253 10254Many comments from the two code reviews have been rolled in. 10255 10256The 64-bit alignment support is complete. 10257 10258------------------------------------------- 10259Summary of changes for this label: 06_30_00 10260 10261With a nod and a tip of the hat to the technology of yesteryear, 10262we've added support in the source code for 80 column output 10263devices. The code is now mostly constrained to 80 columns or 10264less to support environments and editors that 1) cannot display 10265or print more than 80 characters on a single line, and 2) cannot 10266disable line wrapping. 10267 10268A major restructuring of the namespace data structure has been 10269completed. The result is 1) cleaner and more 10270understandable/maintainable code, and 2) a significant reduction 10271in the dynamic memory requirement for each named ACPI object 10272(almost half). 10273 10274------------------------------------------- 10275Summary of changes for this label: 06_23_00 10276 10277Linux support has been added. In order to obtain approval to get 10278the ACPI CA subsystem into the Linux kernel, we've had to make 10279quite a few changes to the base subsystem that will affect all 10280users (all the changes are generic and OS- independent). The 10281effects of these global changes have been somewhat far reaching. 10282Files have been merged and/or renamed and interfaces have been 10283renamed. The major changes are described below. 10284 10285Osd* interfaces renamed to AcpiOs* to eliminate namespace 10286pollution/confusion within our target kernels. All OSD 10287interfaces must be modified to match the new naming convention. 10288 10289Files merged across the subsystem. A number of the smaller source 10290and header files have been merged to reduce the file count and 10291increase the density of the existing files. There are too many 10292to list here. In general, makefiles that call out individual 10293files will require rebuilding. 10294 10295Interpreter files renamed. All interpreter files now have the 10296prefix am* instead of ie* and is*. 10297 10298Header files renamed: The acapi.h file is now acpixf.h. The 10299acpiosd.h file is now acpiosxf.h. We are removing references to 10300the acronym "API" since it is somewhat windowsy. The new name is 10301"external interface" or xface or xf in the filenames.j 10302 10303 10304All manifest constants have been forced to upper case (some were 10305mixed case.) Also, the string "ACPI_" has been prepended to many 10306(not all) of the constants, typedefs, and structs. 10307 10308The globals "DebugLevel" and "DebugLayer" have been renamed 10309"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10310 10311All other globals within the subsystem are now prefixed with 10312"AcpiGbl_" Internal procedures within the subsystem are now 10313prefixed with "Acpi" (with only a few exceptions). The original 10314two-letter abbreviation for the subcomponent remains after "Acpi" 10315- for example, CmCallocate became AcpiCmCallocate. 10316 10317Added a source code translation/conversion utility. Used to 10318generate the Linux source code, it can be modified to generate 10319other types of source as well. Can also be used to cleanup 10320existing source by removing extraneous spaces and blank lines. 10321Found in tools/acpisrc/* 10322 10323OsdUnMapMemory was renamed to OsdUnmapMemory and then 10324AcpiOsUnmapMemory. (UnMap became Unmap). 10325 10326A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10327When set to one, this indicates that the caller wants to use the 10328 10329semaphore as a mutex, not a counting semaphore. ACPI CA uses 10330both types. However, implementers of this call may want to use 10331different OS primitives depending on the type of semaphore 10332requested. For example, some operating systems provide separate 10333 10334"mutex" and "semaphore" interfaces - where the mutex interface is 10335much faster because it doesn't have all the overhead of a full 10336semaphore implementation. 10337 10338Fixed a deadlock problem where a method that accesses the PCI 10339address space can block forever if it is the first access to the 10340space. 10341 10342------------------------------------------- 10343Summary of changes for this label: 06_02_00 10344 10345Support for environments that cannot handle unaligned data 10346accesses (e.g. firmware and OS environments devoid of alignment 10347handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10348been added (via configurable macros) in these three areas: - 10349Transfer of data from the raw AML byte stream is done via byte 10350moves instead of word/dword/qword moves. - External objects are 10351aligned within the user buffer, including package elements (sub- 10352objects). - Conversion of name strings to UINT32 Acpi Names is now 10353done byte-wise. 10354 10355The Store operator was modified to mimic Microsoft's 10356implementation when storing to a Buffer Field. 10357 10358Added a check of the BM_STS bit before entering C3. 10359 10360The methods subdirectory has been obsoleted and removed. A new 10361file, cmeval.c subsumes the functionality. 10362 10363A 16-bit (DOS) version of AcpiExec has been developed. The 10364makefile is under the acpiexec directory. 10365