changes.txt revision 216471
1---------------------------------------- 209 December 2010. Summary of changes for version 20101209: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Completed the major overhaul of the GPE support code that was begun in July 92010. Major features include: removal of _PRW execution in ACPICA (host 10executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing, 11changes to existing interfaces, simplification of GPE handler operation, and 12a handful of new interfaces: 13 14 AcpiUpdateAllGpes 15 AcpiFinishGpe 16 AcpiSetupGpeForWake 17 AcpiSetGpeWakeMask 18 One new file, evxfgpe.c to consolidate all external GPE interfaces. 19 20See the ACPICA Programmer Reference for full details and programming 21information. See the new section 4.4 "General Purpose Event (GPE) Support" 22for a full overview, and section 8.7 "ACPI General Purpose Event Management" 23for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming, 24Bob Moore, Rafael Wysocki. 25 26Implemented a new GPE feature for Windows compatibility, the "Implicit Wake 27GPE Notify". This feature will automatically issue a Notify(2) on a device 28when a Wake GPE is received if there is no corresponding GPE method or 29handler. ACPICA BZ 870. 30 31Fixed a problem with the Scope() operator during table parse and load phase. 32During load phase (table load or method execution), the scope operator should 33not enter the target into the namespace. Instead, it should open a new scope 34at the target location. Linux BZ 19462, ACPICA BZ 882. 35 36Example Code and Data Size: These are the sizes for the OS-independent 37acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 38debug version of the code includes the debug output trace mechanism and has a 39much larger code and data size. 40 41 Previous Release: 42 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total 43 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total 44 Current Release: 45 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 46 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 47 482) iASL Compiler/Disassembler and Tools: 49 50iASL: Relax the alphanumeric restriction on _CID strings. These strings are 51"bus-specific" per the ACPI specification, and therefore any characters are 52acceptable. The only checks that can be performed are for a null string and 53perhaps for a leading asterisk. ACPICA BZ 886. 54 55iASL: Fixed a problem where a syntax error that caused a premature EOF 56condition on the source file emitted a very confusing error message. The 57premature EOF is now detected correctly. ACPICA BZ 891. 58 59Disassembler: Decode the AccessSize within a Generic Address Structure (byte 60access, word access, etc.) Note, this field does not allow arbitrary bit 61access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword. 62 63New: AcpiNames utility - Example namespace dump utility. Shows an example of 64ACPICA configuration for a minimal namespace dump utility. Uses table and 65namespace managers, but no AML interpreter. Does not add any functionality 66over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to 67partition and configure ACPICA. ACPICA BZ 883. 68 69AML Debugger: Increased the debugger buffer size for method return objects. 70Was 4K, increased to 16K. Also enhanced error messages for debugger method 71execution, including the buffer overflow case. 72 73---------------------------------------- 7413 October 2010. Summary of changes for version 20101013: 75 76This release is available at www.acpica.org/downloads 77 781) ACPI CA Core Subsystem: 79 80Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 81clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 82HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 83 84Changed the type of the predefined namespace object _TZ from ThermalZone to 85Device. This was found to be confusing to the host software that processes 86the various thermal zones, since _TZ is not really a ThermalZone. However, a 87Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 88Zhang. 89 90Added Windows Vista SP2 to the list of supported _OSI strings. The actual 91string is "Windows 2006 SP2". 92 93Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 94code automatically repairs _HID-related strings, this type of code is no 95longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 96 97Example Code and Data Size: These are the sizes for the OS-independent 98acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 99debug version of the code includes the debug output trace mechanism and has a 100much larger code and data size. 101 102 Previous Release: 103 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 104 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 105 Current Release: 106 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 107 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 108 1092) iASL Compiler/Disassembler and Tools: 110 111iASL: Implemented additional compile-time validation for _HID strings. The 112non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 113the string must be exactly seven or eight characters. For both _HID and _CID 114strings, all characters must be alphanumeric. ACPICA BZ 874. 115 116iASL: Allow certain "null" resource descriptors. Some BIOS code creates 117descriptors that are mostly or all zeros, with the expectation that they will 118be filled in at runtime. iASL now allows this as long as there is a "resource 119tag" (name) associated with the descriptor, which gives the ASL a handle 120needed to modify the descriptor. ACPICA BZ 873. 121 122Added single-thread support to the generic Unix application OSL. Primarily 123for iASL support, this change removes the use of semaphores in the single- 124threaded ACPICA tools/applications - increasing performance. The 125_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 126option. ACPICA BZ 879. 127 128AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 129for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 130 131iASL: Moved all compiler messages to a new file, aslmessages.h. 132 133---------------------------------------- 13415 September 2010. Summary of changes for version 20100915: 135 136This release is available at www.acpica.org/downloads 137 1381) ACPI CA Core Subsystem: 139 140Removed the AcpiOsDerivePciId OSL interface. The various host implementations 141of this function were not OS-dependent and are now obsolete and can be 142removed from all host OSLs. This function has been replaced by 143AcpiHwDerivePciId, which is now part of the ACPICA core code. 144AcpiHwDerivePciId has been implemented without recursion. Adds one new 145module, hwpci.c. ACPICA BZ 857. 146 147Implemented a dynamic repair for _HID and _CID strings. The following 148problems are now repaired at runtime: 1) Remove a leading asterisk in the 149string, and 2) the entire string is uppercased. Both repairs are in 150accordance with the ACPI specification and will simplify host driver code. 151ACPICA BZ 871. 152 153The ACPI_THREAD_ID type is no longer configurable, internally it is now 154always UINT64. This simplifies the ACPICA code, especially any printf output. 155UINT64 is the only common data type for all thread_id types across all 156operating systems. It is now up to the host OSL to cast the native thread_id 157type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 158Lin Ming, Bob Moore. 159 160Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 161keyword is not standard across compilers, and this type allows inline to be 162configured on a per-compiler basis. Lin Ming. 163 164Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 165Added an extern for this boolean in acpixf.h. Some hosts utilize this value 166during suspend/restore operations. ACPICA BZ 869. 167 168All code that implements error/warning messages with the "ACPI:" prefix has 169been moved to a new module, utxferror.c. 170 171The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 172is used. ACPICA BZ 829. Lin Ming, Bob Moore. 173 174Example Code and Data Size: These are the sizes for the OS-independent 175acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 176debug version of the code includes the debug output trace mechanism and has a 177much larger code and data size. 178 179 Previous Release: 180 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 181 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 182 Current Release: 183 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 184 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 185 1862) iASL Compiler/Disassembler and Tools: 187 188iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 189This keeps the output files free of random error messages that may originate 190from within the namespace/interpreter code. Used this opportunity to merge 191all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 192866. Lin Ming, Bob Moore. 193 194Tools: update some printfs for ansi warnings on size_t. Handle width change 195of size_t on 32-bit versus 64-bit generations. Lin Ming. 196 197---------------------------------------- 19806 August 2010. Summary of changes for version 20100806: 199 2001) ACPI CA Core Subsystem: 201 202Designed and implemented a new host interface to the _OSI support code. This 203will allow the host to dynamically add or remove multiple _OSI strings, as 204well as install an optional handler that is called for each _OSI invocation. 205Also added a new AML debugger command, 'osi' to display and modify the global 206_OSI string table, and test support in the AcpiExec utility. See the ACPICA 207reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 208New Functions: 209 AcpiInstallInterface - Add an _OSI string. 210 AcpiRemoveInterface - Delete an _OSI string. 211 AcpiInstallInterfaceHandler - Install optional _OSI handler. 212Obsolete Functions: 213 AcpiOsValidateInterface - no longer used. 214New Files: 215 source/components/utilities/utosi.c 216 217Re-introduced the support to enable multi-byte transfers for Embedded 218Controller (EC) operation regions. A reported problem was found to be a bug 219in the host OS, not in the multi-byte support. Previously, the maximum data 220size passed to the EC operation region handler was a single byte. There are 221often EC Fields larger than one byte that need to be transferred, and it is 222useful for the EC driver to lock these as a single transaction. This change 223enables single transfers larger than 8 bits. This effectively changes the 224access to the EC space from ByteAcc to AnyAcc, and will probably require 225changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 226transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 227 228Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 229prototype in acpiosxf.h had the output value pointer as a (void *). 230It should be a (UINT64 *). This may affect some host OSL code. 231 232Fixed a couple problems with the recently modified Linux makefiles for iASL 233and AcpiExec. These new makefiles place the generated object files in the 234local directory so that there can be no collisions between the files that are 235shared between them that are compiled with different options. 236 237Example Code and Data Size: These are the sizes for the OS-independent 238acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 239debug version of the code includes the debug output trace mechanism and has a 240much larger code and data size. 241 242 Previous Release: 243 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 244 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 245 Current Release: 246 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 247 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 248 2492) iASL Compiler/Disassembler and Tools: 250 251iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 252namespace from and disassemble an entire group of AML files. Useful for 253loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 254disassembling with one simple command. ACPICA BZ 865. Lin Ming. 255 256iASL: Allow multiple invocations of -e option. This change allows multiple 257uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 258Lin Ming. 259 260---------------------------------------- 26102 July 2010. Summary of changes for version 20100702: 262 2631) ACPI CA Core Subsystem: 264 265Implemented several updates to the recently added GPE reference count 266support. The model for "wake" GPEs is changing to give the host OS complete 267control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 268methods, since the host already must execute them. Also, additional changes 269were made to help ensure that the reference counts are kept in proper 270synchronization with reality. Rafael J. Wysocki. 271 2721) Ensure that GPEs are not enabled twice during initialization. 2732) Ensure that GPE enable masks stay in sync with the reference count. 2743) Do not inadvertently enable GPEs when writing GPE registers. 2754) Remove the internal wake reference counter and add new AcpiGpeWakeup 276interface. This interface will set or clear individual GPEs for wakeup. 2775) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 278are now used for "runtime" GPEs only. 279 280Changed the behavior of the GPE install/remove handler interfaces. The GPE is 281no longer disabled during this process, as it was found to cause problems on 282some machines. Rafael J. Wysocki. 283 284Reverted a change introduced in version 20100528 to enable Embedded 285Controller multi-byte transfers. This change was found to cause problems with 286Index Fields and possibly Bank Fields. It will be reintroduced when these 287problems have been resolved. 288 289Fixed a problem with references to Alias objects within Package Objects. A 290reference to an Alias within the definition of a Package was not always 291resolved properly. Aliases to objects like Processors, Thermal zones, etc. 292were resolved to the actual object instead of a reference to the object as it 293should be. Package objects are only allowed to contain integer, string, 294buffer, package, and reference objects. Redhat bugzilla 608648. 295 296Example Code and Data Size: These are the sizes for the OS-independent 297acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 298debug version of the code includes the debug output trace mechanism and has a 299much larger code and data size. 300 301 Previous Release: 302 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 303 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 304 Current Release: 305 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 306 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 307 3082) iASL Compiler/Disassembler and Tools: 309 310iASL: Implemented a new compiler subsystem to allow definition and 311compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 312are called "ACPI Data Tables", and the new compiler is the "Data Table 313Compiler". This compiler is intended to simplify the existing error-prone 314process of creating these tables for the BIOS, as well as allowing the 315disassembly, modification, recompilation, and override of existing ACPI data 316tables. See the iASL User Guide for detailed information. 317 318iASL: Implemented a new Template Generator option in support of the new Data 319Table Compiler. This option will create examples of all known ACPI tables 320that can be used as the basis for table development. See the iASL 321documentation and the -T option. 322 323Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 324Descriptor Table). 325 326Updated the Linux makefiles for iASL and AcpiExec to place the generated 327object files in the local directory so that there can be no collisions 328between the shared files between them that are generated with different 329options. 330 331Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 332the #define __APPLE__ to enable this support. 333 334---------------------------------------- 33528 May 2010. Summary of changes for version 20100528: 336 337Note: The ACPI 4.0a specification was released on April 5, 2010 and is 338available at www.acpi.info. This is primarily an errata release. 339 3401) ACPI CA Core Subsystem: 341 342Undefined ACPI tables: We are looking for the definitions for the following 343ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 344 345Implemented support to enable multi-byte transfers for Embedded Controller 346(EC) operation regions. Previously, the maximum data size passed to the EC 347operation region handler was a single byte. There are often EC Fields larger 348than one byte that need to be transferred, and it is useful for the EC driver 349to lock these as a single transaction. This change enables single transfers 350larger than 8 bits. This effectively changes the access to the EC space from 351ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 352Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 353transfers. Alexey Starikovskiy, Lin Ming 354 355Implemented a performance enhancement for namespace search and access. This 356change enhances the performance of namespace searches and walks by adding a 357backpointer to the parent in each namespace node. On large namespaces, this 358change can improve overall ACPI performance by up to 9X. Adding a pointer to 359each namespace node increases the overall size of the internal namespace by 360about 5%, since each namespace entry usually consists of both a namespace 361node and an ACPI operand object. However, this is the first growth of the 362namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 363 364Implemented a performance optimization that reduces the number of namespace 365walks. On control method exit, only walk the namespace if the method is known 366to have created namespace objects outside of its local scope. Previously, the 367entire namespace was traversed on each control method exit. This change can 368improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 369 370Added support to truncate I/O addresses to 16 bits for Windows compatibility. 371Some ASL code has been seen in the field that inadvertently has bits set 372above bit 15. This feature is optional and is enabled if the BIOS requests 373any Windows OSI strings. It can also be enabled by the host OS. Matthew 374Garrett, Bob Moore. 375 376Added support to limit the maximum time for the ASL Sleep() operator. To 377prevent accidental deep sleeps, limit the maximum time that Sleep() will 378actually sleep. Configurable, the default maximum is two seconds. ACPICA 379bugzilla 854. 380 381Added run-time validation support for the _WDG and_WED Microsoft predefined 382methods. These objects are defined by "Windows Instrumentation", and are not 383part of the ACPI spec. ACPICA BZ 860. 384 385Expanded all statistic counters used during namespace and device 386initialization from 16 to 32 bits in order to support very large namespaces. 387 388Replaced all instances of %d in printf format specifiers with %u since nearly 389all integers in ACPICA are unsigned. 390 391Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 392as AE_NO_HANDLER. 393 394Example Code and Data Size: These are the sizes for the OS-independent 395acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 396debug version of the code includes the debug output trace mechanism and has a 397much larger code and data size. 398 399 Previous Release: 400 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 401 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 402 Current Release: 403 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 404 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 405 4062) iASL Compiler/Disassembler and Tools: 407 408iASL: Added compiler support for the _WDG and_WED Microsoft predefined 409methods. These objects are defined by "Windows Instrumentation", and are not 410part of the ACPI spec. ACPICA BZ 860. 411 412AcpiExec: added option to disable the memory tracking mechanism. The -dt 413option will disable the tracking mechanism, which improves performance 414considerably. 415 416AcpiExec: Restructured the command line options into -d (disable) and -e 417(enable) options. 418 419---------------------------------------- 42028 April 2010. Summary of changes for version 20100428: 421 4221) ACPI CA Core Subsystem: 423 424Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 425including FADT-based and GPE Block Devices, execute any _PRW methods in the 426new table, and process any _Lxx/_Exx GPE methods in the new table. Any 427runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 428immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 429Devices. Provides compatibility with other ACPI implementations. Two new 430files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 431 432Fixed a regression introduced in version 20100331 within the table manager 433where initial table loading could fail. This was introduced in the fix for 434AcpiReallocateRootTable. Also, renamed some of fields in the table manager 435data structures to clarify their meaning and use. 436 437Fixed a possible allocation overrun during internal object copy in 438AcpiUtCopySimpleObject. The original code did not correctly handle the case 439where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 440 441Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 442possible access beyond end-of-allocation. Also, now fully validate descriptor 443(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 444 445Example Code and Data Size: These are the sizes for the OS-independent 446acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 447debug version of the code includes the debug output trace mechanism and has a 448much larger code and data size. 449 450 Previous Release: 451 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 452 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 453 Current Release: 454 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 455 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 456 4572) iASL Compiler/Disassembler and Tools: 458 459iASL: Implemented Min/Max/Len/Gran validation for address resource 460descriptors. This change implements validation for the address fields that 461are common to all address-type resource descriptors. These checks are 462implemented: Checks for valid Min/Max, length within the Min/Max window, 463valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 464table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 465and aslrestype2.c files into five new files. ACPICA BZ 840. 466 467iASL: Added support for the _Wxx predefined names. This support was missing 468and these names were not recognized by the compiler as valid predefined 469names. ACPICA BZ 851. 470 471iASL: Added an error for all predefined names that are defined to return no 472value and thus must be implemented as Control Methods. These include all of 473the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 474names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 475 476iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 477ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 478dynamically loaded via the Load() operator. Also cleaned up output for the - 479ta and -tc options. ACPICA BZ 853. 480 481Tests: Added a new file with examples of extended iASL error checking. 482Demonstrates the advanced error checking ability of the iASL compiler. 483Available at tests/misc/badcode.asl. 484 485---------------------------------------- 48631 March 2010. Summary of changes for version 20100331: 487 4881) ACPI CA Core Subsystem: 489 490Completed a major update for the GPE support in order to improve support for 491shared GPEs and to simplify both host OS and ACPICA code. Added a reference 492count mechanism to support shared GPEs that require multiple device drivers. 493Several external interfaces have changed. One external interface has been 494removed. One new external interface was added. Most of the GPE external 495interfaces now use the GPE spinlock instead of the events mutex (and the 496Flags parameter for many GPE interfaces has been removed.) See the updated 497ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 498Wysocki. ACPICA BZ 831. 499 500Changed: 501 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 502Removed: 503 AcpiSetGpeType 504New: 505 AcpiSetGpe 506 507Implemented write support for DataTable operation regions. These regions are 508defined via the DataTableRegion() operator. Previously, only read support was 509implemented. The ACPI specification allows DataTableRegions to be read/write, 510however. 511 512Implemented a new subsystem option to force a copy of the DSDT to local 513memory. Optionally copy the entire DSDT to local memory (instead of simply 514mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 515the original DSDT, creating the need for this option. Default is FALSE, do 516not copy the DSDT. 517 518Implemented detection of a corrupted or replaced DSDT. This change adds 519support to detect a DSDT that has been corrupted and/or replaced from outside 520the OS (by firmware). This is typically catastrophic for the system, but has 521been seen on some machines. Once this problem has been detected, the DSDT 522copy option can be enabled via system configuration. Lin Ming, Bob Moore. 523 524Fixed two problems with AcpiReallocateRootTable during the root table copy. 525When copying the root table to the new allocation, the length used was 526incorrect. The new size was used instead of the current table size, meaning 527too much data was copied. Also, the count of available slots for ACPI tables 528was not set correctly. Alexey Starikovskiy, Bob Moore. 529 530Example Code and Data Size: These are the sizes for the OS-independent 531acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 532debug version of the code includes the debug output trace mechanism and has a 533much larger code and data size. 534 535 Previous Release: 536 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 537 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 538 Current Release: 539 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 540 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 541 5422) iASL Compiler/Disassembler and Tools: 543 544iASL: Implement limited typechecking for values returned from predefined 545control methods. The type of any returned static (unnamed) object is now 546validated. For example, Return(1). ACPICA BZ 786. 547 548iASL: Fixed a predefined name object verification regression. Fixes a problem 549introduced in version 20100304. An error is incorrectly generated if a 550predefined name is declared as a static named object with a value defined 551using the keywords "Zero", "One", or "Ones". Lin Ming. 552 553iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 554reducing the requested registry access rights. ACPICA BZ 842. 555 556Disassembler: fixed a possible fault when generating External() statements. 557Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 558(carat). Fixes a string length allocation calculation. Lin Ming. 559 560---------------------------------------- 56104 March 2010. Summary of changes for version 20100304: 562 5631) ACPI CA Core Subsystem: 564 565Fixed a possible problem with the AML Mutex handling function 566AcpiExReleaseMutex where the function could fault under the very rare 567condition when the interpreter has blocked, the interpreter lock is released, 568the interpreter is then reentered via the same thread, and attempts to 569acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 570Ming. 571 572Implemented additional configuration support for the AML "Debug Object". 573Output from the debug object can now be enabled via a global variable, 574AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 575This debug output is now available in the release version of ACPICA instead 576of just the debug version. Also, the entire debug output module can now be 577configured out of the ACPICA build if desired. One new file added, 578executer/exdebug.c. Lin Ming, Bob Moore. 579 580Added header support for the ACPI MCHI table (Management Controller Host 581Interface Table). This table was added in ACPI 4.0, but the defining document 582has only recently become available. 583 584Standardized output of integer values for ACPICA warnings/errors. Always use 5850x prefix for hex output, always use %u for unsigned integer decimal output. 586Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 587invocations.) These invocations were converted from the original 588ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 589 590Example Code and Data Size: These are the sizes for the OS-independent 591acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 592debug version of the code includes the debug output trace mechanism and has a 593much larger code and data size. 594 595 Previous Release: 596 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 597 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 598 Current Release: 599 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 600 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 601 6022) iASL Compiler/Disassembler and Tools: 603 604iASL: Implemented typechecking support for static (non-control method) 605predefined named objects that are declared with the Name() operator. For 606example, the type of this object is now validated to be of type Integer: 607Name(_BBN, 1). This change migrates the compiler to using the core predefined 608name table instead of maintaining a local version. Added a new file, 609aslpredef.c. ACPICA BZ 832. 610 611Disassembler: Added support for the ACPI 4.0 MCHI table. 612 613---------------------------------------- 61421 January 2010. Summary of changes for version 20100121: 615 6161) ACPI CA Core Subsystem: 617 618Added the 2010 copyright to all module headers and signons. This affects 619virtually every file in the ACPICA core subsystem, the iASL compiler, the 620tools/utilities, and the test suites. 621 622Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 623invocations of the _STA method. In the case where a specific _HID is 624requested, do not run _STA until a _HID match is found. This eliminates 625potentially dozens of _STA calls during a search for a particular device/HID, 626which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 627 628Implemented an additional repair for predefined method return values. Attempt 629to repair unexpected NULL elements within returned Package objects. Create an 630Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 631ACPICA BZ 818. Lin Ming, Bob Moore. 632 633Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 634code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 63564-bit AML integers). It is now obsolete and this change removes it from the 636ACPICA code base, replaced by UINT64. The original typedef has been retained 637for now for compatibility with existing device driver code. ACPICA BZ 824. 638 639Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 640the parse tree object. 641 642Added additional warning options for the gcc-4 generation. Updated the source 643accordingly. This includes some code restructuring to eliminate unreachable 644code, elimination of some gotos, elimination of unused return values, some 645additional casting, and removal of redundant declarations. 646 647Example Code and Data Size: These are the sizes for the OS-independent 648acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 649debug version of the code includes the debug output trace mechanism and has a 650much larger code and data size. 651 652 Previous Release: 653 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 654 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 655 Current Release: 656 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 657 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 658 6592) iASL Compiler/Disassembler and Tools: 660 661No functional changes for this release. 662 663---------------------------------------- 66414 December 2009. Summary of changes for version 20091214: 665 6661) ACPI CA Core Subsystem: 667 668Enhanced automatic data type conversions for predefined name repairs. This 669change expands the automatic repairs/conversions for predefined name return 670values to make Integers, Strings, and Buffers fully interchangeable. Also, a 671Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 672module was completely restructured. Lin Ming, Bob Moore. 673 674Implemented automatic removal of null package elements during predefined name 675repairs. This change will automatically remove embedded and trailing NULL 676package elements from returned package objects that are defined to contain a 677variable number of sub-packages. The driver is then presented with a package 678with no null elements to deal with. ACPICA BZ 819. 679 680Implemented a repair for the predefined _FDE and _GTM names. The expected 681return value for both names is a Buffer of 5 DWORDs. This repair fixes two 682possible problems (both seen in the field), where a package of integers is 683returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 684 685Implemented additional module-level code support. This change will properly 686execute module-level code that is not at the root of the namespace (under a 687Device object, etc.). Now executes the code within the current scope instead 688of the root. ACPICA BZ 762. Lin Ming. 689 690Fixed possible mutex acquisition errors when running _REG methods. Fixes a 691problem where mutex errors can occur when running a _REG method that is in 692the same scope as a method-defined operation region or an operation region 693under a module-level IF block. This type of code is rare, so the problem has 694not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 695 696Fixed a possible memory leak during module-level code execution. An object 697could be leaked for each block of executed module-level code if the 698interpreter slack mode is enabled This change deletes any implicitly returned 699object from the module-level code block. Lin Ming. 700 701Removed messages for successful predefined repair(s). The repair mechanism 702was considered too wordy. Now, messages are only unconditionally emitted if 703the return object cannot be repaired. Existing messages for successful 704repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 705 706Example Code and Data Size: These are the sizes for the OS-independent 707acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 708debug version of the code includes the debug output trace mechanism and has a 709much larger code and data size. 710 711 Previous Release: 712 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 713 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 714 Current Release: 715 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 716 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 717 7182) iASL Compiler/Disassembler and Tools: 719 720iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 721were no longer automatically removed at the termination of the compile. 722 723acpiexec: Implemented the -f option to specify default region fill value. 724This option specifies the value used to initialize buffers that simulate 725operation regions. Default value is zero. Useful for debugging problems that 726depend on a specific initial value for a region or field. 727 728---------------------------------------- 72912 November 2009. Summary of changes for version 20091112: 730 7311) ACPI CA Core Subsystem: 732 733Implemented a post-order callback to AcpiWalkNamespace. The existing 734interface only has a pre-order callback. This change adds an additional 735parameter for a post-order callback which will be more useful for bus scans. 736ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 737 738Modified the behavior of the operation region memory mapping cache for 739SystemMemory. Ensure that the memory mappings created for operation regions 740do not cross 4K page boundaries. Crossing a page boundary while mapping 741regions can cause kernel warnings on some hosts if the pages have different 742attributes. Such regions are probably BIOS bugs, and this is the workaround. 743Linux BZ 14445. Lin Ming. 744 745Implemented an automatic repair for predefined methods that must return 746sorted lists. This change will repair (by sorting) packages returned by _ALR, 747_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 748and do not contain NULL package elements. Adds one new file, 749namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 750 751Fixed a possible fault during predefined name validation if a return Package 752object contains NULL elements. Also adds a warning if a NULL element is 753followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 754include repair or removal of all such NULL elements where possible. 755 756Implemented additional module-level executable AML code support. This change 757will execute module-level code that is not at the root of the namespace 758(under a Device object, etc.) at table load time. Module-level executable AML 759code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 760 761Implemented a new internal function to create Integer objects. This function 762simplifies miscellaneous object creation code. ACPICA BZ 823. 763 764Reduced the severity of predefined repair messages, Warning to Info. Since 765the object was successfully repaired, a warning is too severe. Reduced to an 766info message for now. These messages may eventually be changed to debug-only. 767ACPICA BZ 812. 768 769Example Code and Data Size: These are the sizes for the OS-independent 770acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 771debug version of the code includes the debug output trace mechanism and has a 772much larger code and data size. 773 774 Previous Release: 775 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 776 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 777 Current Release: 778 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 779 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 780 7812) iASL Compiler/Disassembler and Tools: 782 783iASL: Implemented Switch() with While(1) so that Break works correctly. This 784change correctly implements the Switch operator with a surrounding While(1) 785so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 786 787iASL: Added a message if a package initializer list is shorter than package 788length. Adds a new remark for a Package() declaration if an initializer list 789exists, but is shorter than the declared length of the package. Although 790technically legal, this is probably a coding error and it is seen in the 791field. ACPICA BZ 815. Lin Ming, Bob Moore. 792 793iASL: Fixed a problem where the compiler could fault after the maximum number 794of errors was reached (200). 795 796acpixtract: Fixed a possible warning for pointer cast if the compiler warning 797level set very high. 798 799---------------------------------------- 80013 October 2009. Summary of changes for version 20091013: 801 8021) ACPI CA Core Subsystem: 803 804Fixed a problem where an Operation Region _REG method could be executed more 805than once. If a custom address space handler is installed by the host before 806the "initialize operation regions" phase of the ACPICA initialization, any 807_REG methods for that address space could be executed twice. This change 808fixes the problem. ACPICA BZ 427. Lin Ming. 809 810Fixed a possible memory leak for the Scope() ASL operator. When the exact 811invocation of "Scope(\)" is executed (change scope to root), one internal 812operand object was leaked. Lin Ming. 813 814Implemented a run-time repair for the _MAT predefined method. If the _MAT 815return value is defined as a Field object in the AML, and the field 816size is less than or equal to the default width of an integer (32 or 64),_MAT 817can incorrectly return an Integer instead of a Buffer. ACPICA now 818automatically repairs this problem. ACPICA BZ 810. 819 820Implemented a run-time repair for the _BIF and _BIX predefined methods. The 821"OEM Information" field is often incorrectly returned as an Integer with 822value zero if the field is not supported by the platform. This is due to an 823ambiguity in the ACPI specification. The field should always be a string. 824ACPICA now automatically repairs this problem by returning a NULL string 825within the returned Package. ACPICA BZ 807. 826 827Example Code and Data Size: These are the sizes for the OS-independent 828acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 829debug version of the code includes the debug output trace mechanism and has a 830much larger code and data size. 831 832 Previous Release: 833 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 834 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 835 Current Release: 836 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 837 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 838 8392) iASL Compiler/Disassembler and Tools: 840 841Disassembler: Fixed a problem where references to external symbols that 842contained one or more parent-prefixes (carats) were not handled correctly, 843possibly causing a fault. ACPICA BZ 806. Lin Ming. 844 845Disassembler: Restructured the code so that all functions that handle 846external symbols are in a single module. One new file is added, 847common/dmextern.c. 848 849AML Debugger: Added a max count argument for the Batch command (which 850executes multiple predefined methods within the namespace.) 851 852iASL: Updated the compiler documentation (User Reference.) Available at 853http://www.acpica.org/documentation/. ACPICA BZ 750. 854 855AcpiXtract: Updated for Lint and other formatting changes. Close all open 856files. 857 858---------------------------------------- 85903 September 2009. Summary of changes for version 20090903: 860 8611) ACPI CA Core Subsystem: 862 863For Windows Vista compatibility, added the automatic execution of an _INI 864method located at the namespace root (\_INI). This method is executed at 865table load time. This support is in addition to the automatic execution of 866\_SB._INI. Lin Ming. 867 868Fixed a possible memory leak in the interpreter for AML package objects if 869the package initializer list is longer than the defined size of the package. 870This apparently can only happen if the BIOS changes the package size on the 871fly (seen in a _PSS object), as ASL compilers do not allow this. The 872interpreter will truncate the package to the defined size (and issue an error 873message), but previously could leave the extra objects undeleted if they were 874pre-created during the argument processing (such is the case if the package 875consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 876 877Fixed a problem seen when a Buffer or String is stored to itself via ASL. 878This has been reported in the field. Previously, ACPICA would zero out the 879buffer/string. Now, the operation is treated as a noop. Provides Windows 880compatibility. ACPICA BZ 803. Lin Ming. 881 882Removed an extraneous error message for ASL constructs of the form 883Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 884are seen in many BIOSs and are once again treated as NOOPs and no error is 885emitted when they are encountered. ACPICA BZ 785. 886 887Fixed an extraneous warning message if a _DSM reserved method returns a 888Package object. _DSM can return any type of object, so validation on the 889return type cannot be performed. ACPICA BZ 802. 890 891Example Code and Data Size: These are the sizes for the OS-independent 892acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 893debug version of the code includes the debug output trace mechanism and has a 894much larger code and data size. 895 896 Previous Release: 897 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 898 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 899 Current Release: 900 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 901 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 902 9032) iASL Compiler/Disassembler and Tools: 904 905iASL: Fixed a problem with the use of the Alias operator and Resource 906Templates. The correct alias is now constructed and no error is emitted. 907ACPICA BZ 738. 908 909iASL: Implemented the -I option to specify additional search directories for 910include files. Allows multiple additional search paths for include files. 911Directories are searched in the order specified on the command line (after 912the local directory is searched.) ACPICA BZ 800. 913 914iASL: Fixed a problem where the full pathname for include files was not 915emitted for warnings/errors. This caused the IDE support to not work 916properly. ACPICA BZ 765. 917 918iASL: Implemented the -@ option to specify a Windows-style response file 919containing additional command line options. ACPICA BZ 801. 920 921AcpiExec: Added support to load multiple AML files simultaneously (such as a 922DSDT and multiple SSDTs). Also added support for wildcards within the AML 923pathname. These features allow all machine tables to be easily loaded and 924debugged together. ACPICA BZ 804. 925 926Disassembler: Added missing support for disassembly of HEST table Error Bank 927subtables. 928 929---------------------------------------- 93030 July 2009. Summary of changes for version 20090730: 931 932The ACPI 4.0 implementation for ACPICA is complete with this release. 933 9341) ACPI CA Core Subsystem: 935 936ACPI 4.0: Added header file support for all new and changed ACPI tables. 937Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 938for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 939EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 940have been some ACPI 4.0 changes to other existing tables. Split the large 941actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 942 943ACPI 4.0: Implemented predefined name validation for all new names. There are 94431 new names in ACPI 4.0. The predefined validation module was split into two 945files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 946 947Implemented support for so-called "module-level executable code". This is 948executable AML code that exists outside of any control method and is intended 949to be executed at table load time. Although illegal since ACPI 2.0, this type 950of code still exists and is apparently still being created. Blocks of this 951code are now detected and executed as intended. Currently, the code blocks 952must exist under either an If, Else, or While construct; these are the 953typical cases seen in the field. ACPICA BZ 762. Lin Ming. 954 955Implemented an automatic dynamic repair for predefined names that return 956nested Package objects. This applies to predefined names that are defined to 957return a variable-length Package of sub-packages. If the number of sub- 958packages is one, BIOS code is occasionally seen that creates a simple single 959package with no sub-packages. This code attempts to fix the problem by 960wrapping a new package object around the existing package. These methods can 961be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 962790. 963 964Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 965The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 966BZ 793. 967 968Fixed a problem with AcpiReset where the reset would silently fail if the 969register was one of the protected I/O ports. AcpiReset now bypasses the port 970validation mechanism. This may eventually be driven into the AcpiRead/Write 971interfaces. 972 973Fixed a regression related to the recent update of the AcpiRead/Write 974interfaces. A sleep/suspend could fail if the optional PM2 Control register 975does not exist during an attempt to write the Bus Master Arbitration bit. 976(However, some hosts already delete the code that writes this bit, and the 977code may in fact be obsolete at this date.) ACPICA BZ 799. 978 979Fixed a problem where AcpiTerminate could fault if inadvertently called twice 980in succession. ACPICA BZ 795. 981 982Example Code and Data Size: These are the sizes for the OS-independent 983acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 984debug version of the code includes the debug output trace mechanism and has a 985much larger code and data size. 986 987 Previous Release: 988 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 989 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 990 Current Release: 991 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 992 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 993 9942) iASL Compiler/Disassembler and Tools: 995 996ACPI 4.0: Implemented disassembler support for all new ACPI tables and 997changes to existing tables. ACPICA BZ 775. 998 999---------------------------------------- 100025 June 2009. Summary of changes for version 20090625: 1001 1002The ACPI 4.0 Specification was released on June 16 and is available at 1003www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 1004continue for the next few releases. 1005 10061) ACPI CA Core Subsystem: 1007 1008ACPI 4.0: Implemented interpreter support for the IPMI operation region 1009address space. Includes support for bi-directional data buffers and an IPMI 1010address space handler (to be installed by an IPMI device driver.) ACPICA BZ 1011773. Lin Ming. 1012 1013ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 1014support in both the header files and the disassembler. 1015 1016Completed a major update for the AcpiGetObjectInfo external interface. 1017Changes include: 1018 - Support for variable, unlimited length HID, UID, and CID strings. 1019 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 1020 - Call the _SxW power methods on behalf of a device object. 1021 - Determine if a device is a PCI root bridge. 1022 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 1023These changes will require an update to all callers of this interface. See 1024the updated ACPICA Programmer Reference for details. One new source file has 1025been added - utilities/utids.c. ACPICA BZ 368, 780. 1026 1027Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 1028transfers. The Value parameter has been extended from 32 bits to 64 bits in 1029order to support new ACPI 4.0 tables. These changes will require an update to 1030all callers of these interfaces. See the ACPICA Programmer Reference for 1031details. ACPICA BZ 768. 1032 1033Fixed several problems with AcpiAttachData. The handler was not invoked when 1034the host node was deleted. The data sub-object was not automatically deleted 1035when the host node was deleted. The interface to the handler had an unused 1036parameter, this was removed. ACPICA BZ 778. 1037 1038Enhanced the function that dumps ACPI table headers. All non-printable 1039characters in the string fields are now replaced with '?' (Signature, OemId, 1040OemTableId, and CompilerId.) ACPI tables with non-printable characters in 1041these fields are occasionally seen in the field. ACPICA BZ 788. 1042 1043Fixed a problem with predefined method repair code where the code that 1044attempts to repair/convert an object of incorrect type is only executed on 1045the first time the predefined method is called. The mechanism that disables 1046warnings on subsequent calls was interfering with the repair mechanism. 1047ACPICA BZ 781. 1048 1049Fixed a possible memory leak in the predefined validation/repair code when a 1050buffer is automatically converted to an expected string object. 1051 1052Removed obsolete 16-bit files from the distribution and from the current git 1053tree head. ACPICA BZ 776. 1054 1055Example Code and Data Size: These are the sizes for the OS-independent 1056acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1057debug version of the code includes the debug output trace mechanism and has a 1058much larger code and data size. 1059 1060 Previous Release: 1061 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1062 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1063 Current Release: 1064 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 1065 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 1066 10672) iASL Compiler/Disassembler and Tools: 1068 1069ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 1070operation region keyword. ACPICA BZ 771, 772. Lin Ming. 1071 1072ACPI 4.0: iASL - implemented compile-time validation support for all new 1073predefined names and control methods (31 total). ACPICA BZ 769. 1074 1075---------------------------------------- 107621 May 2009. Summary of changes for version 20090521: 1077 10781) ACPI CA Core Subsystem: 1079 1080Disabled the preservation of the SCI enable bit in the PM1 control register. 1081The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1082a "preserved" bit - "OSPM always preserves this bit position", section 10834.7.3.2.1. However, some machines fail if this bit is in fact preserved 1084because the bit needs to be explicitly set by the OS as a workaround. No 1085machines fail if the bit is not preserved. Therefore, ACPICA no longer 1086attempts to preserve this bit. 1087 1088Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1089incorrectly formed _PRT package could cause a fault. Added validation to 1090ensure that each package element is actually a sub-package. 1091 1092Implemented a new interface to install or override a single control method, 1093AcpiInstallMethod. This interface is useful when debugging in order to repair 1094an existing method or to install a missing method without having to override 1095the entire ACPI table. See the ACPICA Programmer Reference for use and 1096examples. Lin Ming, Bob Moore. 1097 1098Fixed several reference count issues with the DdbHandle object that is 1099created from a Load or LoadTable operator. Prevent premature deletion of the 1100object. Also, mark the object as invalid once the table has been unloaded. 1101This is needed because the handle itself may not be deleted after the table 1102unload, depending on whether it has been stored in a named object by the 1103caller. Lin Ming. 1104 1105Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1106mutexes of the same sync level are acquired but then not released in strict 1107opposite order, the internally maintained Current Sync Level becomes confused 1108and can cause subsequent execution errors. ACPICA BZ 471. 1109 1110Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1111specification has been changed to make the SyncLevel for mutex objects more 1112useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1113same as the current sync level. This makes more sense than the previous rule 1114(SyncLevel less than or equal). This change updates the code to match the 1115specification. 1116 1117Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1118(local) cache must be locked during all cache object deletions. Andrew 1119Baumann. 1120 1121Updated the Load operator to use operation region interfaces. This replaces 1122direct memory mapping with region access calls. Now, all region accesses go 1123through the installed region handler as they should. 1124 1125Simplified and optimized the NsGetNextNode function. Reduced parameter count 1126and reduced code for this frequently used function. 1127 1128Example Code and Data Size: These are the sizes for the OS-independent 1129acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1130debug version of the code includes the debug output trace mechanism and has a 1131much larger code and data size. 1132 1133 Previous Release: 1134 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1135 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1136 Current Release: 1137 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1138 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1139 11402) iASL Compiler/Disassembler and Tools: 1141 1142Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1143with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1144after an invalid sub-table ID. 1145 1146---------------------------------------- 114722 April 2009. Summary of changes for version 20090422: 1148 11491) ACPI CA Core Subsystem: 1150 1151Fixed a compatibility issue with the recently released I/O port protection 1152mechanism. For windows compatibility, 1) On a port protection violation, 1153simply ignore the request and do not return an exception (allow the control 1154method to continue execution.) 2) If only part of the request overlaps a 1155protected port, read/write the individual ports that are not protected. Linux 1156BZ 13036. Lin Ming 1157 1158Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1159breaks into the AML debugger if the debugger is present. This matches the 1160ACPI-defined behavior. 1161 1162Fixed several possible warnings related to the use of the configurable 1163ACPI_THREAD_ID. This type can now be configured as either an integer or a 1164pointer with no warnings. Also fixes several warnings in printf-like 1165statements for the 64-bit build when the type is configured as a pointer. 1166ACPICA BZ 766, 767. 1167 1168Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1169warning options.) Examples include printf formats, aliasing, unused globals, 1170missing prototypes, missing switch default statements, use of non-ANSI 1171library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1172a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1173 1174Example Code and Data Size: These are the sizes for the OS-independent 1175acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1176debug version of the code includes the debug output trace mechanism and has a 1177much larger code and data size. 1178 1179 Previous Release: 1180 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1181 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1182 Current Release: 1183 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1184 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1185 11862) iASL Compiler/Disassembler and Tools: 1187 1188iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1189the 64-bit build. 1190 1191iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1192correctly digest Windows/DOS formatted files (with CR/LF). 1193 1194iASL: Added a new option for "quiet mode" (-va) that produces only the 1195compilation summary, not individual errors and warnings. Useful for large 1196batch compilations. 1197 1198AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1199timeout that can be used to detect hang conditions during execution of AML 1200code (includes both internal semaphores and AML-defined mutexes and events.) 1201 1202Added new makefiles for the generation of acpica in a generic unix-like 1203environment. These makefiles are intended to generate the acpica tools and 1204utilities from the original acpica git source tree structure. 1205 1206Test Suites: Updated and cleaned up the documentation files. Updated the 1207copyrights to 2009, affecting all source files. Use the new version of iASL 1208with quiet mode. Increased the number of available semaphores in the Windows 1209OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1210an alternate implementation of the semaphore timeout to allow aslts to 1211execute fully on Cygwin. 1212 1213---------------------------------------- 121420 March 2009. Summary of changes for version 20090320: 1215 12161) ACPI CA Core Subsystem: 1217 1218Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1219unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1220namespace walks (readers), but block a dynamic table unload until it can gain 1221exclusive write access to the namespace. This fixes a problem where a table 1222unload could (possibly catastrophically) delete the portion of the namespace 1223that is currently being examined by a walk. Adds a new file, utlock.c, that 1224implements the reader/writer lock mechanism. ACPICA BZ 749. 1225 1226Fixed a regression introduced in version 20090220 where a change to the FADT 1227handling could cause the ACPICA subsystem to access non-existent I/O ports. 1228 1229Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1230FADT can contain both 32-bit and 64-bit versions of these addresses. 1231Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1232versions were valid, but not equal, the 64-bit version was used. This was 1233found to cause some machines to fail. Now, in this case, the 32-bit version 1234is used instead. This now matches the Windows behavior. 1235 1236Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1237compatibility and protects the standard PC I/O ports from access via AML 1238code. Adds a new file, hwvalid.c 1239 1240Fixed a possible extraneous warning message from the FADT support. The 1241message warns of a 32/64 length mismatch between the legacy and GAS 1242definitions for a register. 1243 1244Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1245made obsolete by the port protection mechanism above. It was previously used 1246to validate the entire address range of an operation region, which could be 1247incorrect if the range included illegal ports, but fields within the 1248operation region did not actually access those ports. Validation is now 1249performed on a per-field basis instead of the entire region. 1250 1251Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1252Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1253means a read/modify/write when writing to the register. However, for status 1254registers, writing a one means clear the event. Writing a zero means preserve 1255the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1256and the ACPICA code now simply always writes a zero to the ignored bit. 1257 1258Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1259per the ACPI specification, for the control registers, preserve 1260(read/modify/write) all bits that are defined as either reserved or ignored. 1261 1262Updated the handling of write-only bits in the PM1 A/B Control Registers. 1263When reading the register, zero the write-only bits as per the ACPI spec. 1264ACPICA BZ 443. Lin Ming. 1265 1266Removed "Linux" from the list of supported _OSI strings. Linux no longer 1267wants to reply true to this request. The Windows strings are the only paths 1268through the AML that are tested and known to work properly. 1269 1270 Previous Release: 1271 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1272 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1273 Current Release: 1274 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1275 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1276 12772) iASL Compiler/Disassembler and Tools: 1278 1279Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1280aetables.c 1281 1282---------------------------------------- 128320 February 2009. Summary of changes for version 20090220: 1284 12851) ACPI CA Core Subsystem: 1286 1287Optimized the ACPI register locking. Removed locking for reads from the ACPI 1288bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1289not required when reading the single-bit registers. The 1290AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1291This will improve performance for reads on these registers. ACPICA BZ 760. 1292 1293Fixed the parameter validation for AcpiRead/Write. Now return 1294AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1295the register has an address of zero. Previously, these cases simply returned 1296AE_OK. For optional registers such as PM1B status/enable/control, the caller 1297should check for a valid register address before calling. ACPICA BZ 748. 1298 1299Renamed the external ACPI bit register access functions. Renamed 1300AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1301functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1302Also, restructured the code for these functions by simplifying the code path 1303and condensing duplicate code to reduce code size. 1304 1305Added new functions to transparently handle the possibly split PM1 A/B 1306registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1307now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1308746. 1309 1310Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1311This function writes both of the PM1 control registers (A/B). These registers 1312are different than the PM1 A/B status and enable registers in that different 1313values can be written to the A/B registers. Most notably, the SLP_TYP bits 1314can be different, as per the values returned from the _Sx predefined methods. 1315 1316Removed an extra register write within AcpiHwClearAcpiStatus. This function 1317was writing an optional PM1B status register twice. The existing call to the 1318low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1319register. ACPICA BZ 751. 1320 1321Split out the PM1 Status registers from the FADT. Added new globals for these 1322registers (A/B), similar to the way the PM1 Enable registers are handled. 1323Instead of overloading the FADT Event Register blocks. This makes the code 1324clearer and less prone to error. 1325 1326Fixed the warning message for when the platform contains too many ACPI tables 1327for the default size of the global root table data structure. The calculation 1328for the truncation value was incorrect. 1329 1330Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1331obsolete macro, since it is now a simple reference to ->common.type. There 1332were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1333 1334Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1335TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1336simply SLEEP_TYPE. ACPICA BZ 754. 1337 1338Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1339function is only needed on 64-bit host operating systems and is thus not 1340included for 32-bit hosts. 1341 1342Debug output: print the input and result for invocations of the _OSI reserved 1343control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1344verbosity of this debug level. Len Brown. 1345 1346Example Code and Data Size: These are the sizes for the OS-independent 1347acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1348debug version of the code includes the debug output trace mechanism and has a 1349much larger code and data size. 1350 1351 Previous Release: 1352 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1353 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1354 Current Release: 1355 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1356 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1357 13582) iASL Compiler/Disassembler and Tools: 1359 1360Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1361various legal performance profiles. 1362 1363---------------------------------------- 136423 January 2009. Summary of changes for version 20090123: 1365 13661) ACPI CA Core Subsystem: 1367 1368Added the 2009 copyright to all module headers and signons. This affects 1369virtually every file in the ACPICA core subsystem, the iASL compiler, and 1370the tools/utilities. 1371 1372Implemented a change to allow the host to override any ACPI table, including 1373dynamically loaded tables. Previously, only the DSDT could be replaced by the 1374host. With this change, the AcpiOsTableOverride interface is called for each 1375table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1376a table is dynamically loaded via the AML Load operator. 1377 1378Updated FADT flag definitions, especially the Boot Architecture flags. 1379 1380Debugger: For the Find command, automatically pad the input ACPI name with 1381underscores if the name is shorter than 4 characters. This enables a match 1382with the actual namespace entry which is itself padded with underscores. 1383 1384Example Code and Data Size: These are the sizes for the OS-independent 1385acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1386debug version of the code includes the debug output trace mechanism and has a 1387much larger code and data size. 1388 1389 Previous Release: 1390 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1391 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1392 Current Release: 1393 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1394 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1395 13962) iASL Compiler/Disassembler and Tools: 1397 1398Fix build error under Bison-2.4. 1399 1400Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1401flags. Now decode all flags, regardless of the FADT version. Flag output 1402includes the FADT version which first defined each flag. 1403 1404The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1405DSDT). Windows only. 1406 1407---------------------------------------- 140804 December 2008. Summary of changes for version 20081204: 1409 14101) ACPI CA Core Subsystem: 1411 1412The ACPICA Programmer Reference has been completely updated and revamped for 1413this release. This includes updates to the external interfaces, OSL 1414interfaces, the overview sections, and the debugger reference. 1415 1416Several new ACPICA interfaces have been implemented and documented in the 1417programmer reference: 1418AcpiReset - Writes the reset value to the FADT-defined reset register. 1419AcpiDisableAllGpes - Disable all available GPEs. 1420AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1421AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1422AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1423AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1424AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1425 1426Most of the public ACPI hardware-related interfaces have been moved to a new 1427file, components/hardware/hwxface.c 1428 1429Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1430register lengths within the FADT are now used, and the low level ACPI 1431register access no longer hardcodes the ACPI register lengths. Given that 1432there may be some risk in actually trusting the FADT register lengths, a run- 1433time option was added to fall back to the default hardcoded lengths if the 1434FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1435option is set to true for now, and a warning is issued if a suspicious FADT 1436register length is overridden with the default value. 1437 1438Fixed a reference count issue in NsRepairObject. This problem was introduced 1439in version 20081031 as part of a fix to repair Buffer objects within 1440Packages. Lin Ming. 1441 1442Added semaphore support to the Linux/Unix application OS-services layer 1443(OSL). ACPICA BZ 448. Lin Ming. 1444 1445Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1446be implemented in the OSL, or will binary semaphores be used instead. 1447 1448Example Code and Data Size: These are the sizes for the OS-independent 1449acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1450debug version of the code includes the debug output trace mechanism and has a 1451much larger code and data size. 1452 1453 Previous Release: 1454 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1455 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1456 Current Release: 1457 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1458 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1459 14602) iASL Compiler/Disassembler and Tools: 1461 1462iASL: Completed the '-e' option to include additional ACPI tables in order to 1463aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1464Ming. 1465 1466iASL: Removed the "named object in while loop" error. The compiler cannot 1467determine how many times a loop will execute. ACPICA BZ 730. 1468 1469Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1470BZ 743. 1471 1472Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1473 1474---------------------------------------- 147531 October 2008. Summary of changes for version 20081031: 1476 14771) ACPI CA Core Subsystem: 1478 1479Restructured the ACPICA header files into public/private. acpi.h now includes 1480only the "public" acpica headers. All other acpica headers are "private" and 1481should not be included by acpica users. One new file, accommon.h is used to 1482include the commonly used private headers for acpica code generation. Future 1483plans include moving all private headers to a new subdirectory. 1484 1485Implemented an automatic Buffer->String return value conversion for 1486predefined ACPI methods. For these methods (such as _BIF), added automatic 1487conversion for return objects that are required to be a String, but a Buffer 1488was found instead. This can happen when reading string battery data from an 1489operation region, because it used to be difficult to convert the data from 1490buffer to string from within the ASL. Ensures that the host OS is provided 1491with a valid null-terminated string. Linux BZ 11822. 1492 1493Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1494into two: one for the 32-bit vector, another for the 64-bit vector. This is 1495required because the host OS must setup the wake much differently for each 1496vector (real vs. protected mode, etc.) and the interface itself should not be 1497deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1498interface, as it served no purpose (only the firmware reads the vector, OS 1499only writes the vector.) ACPICA BZ 731. 1500 1501Implemented a mechanism to escape infinite AML While() loops. Added a loop 1502counter to force exit from AML While loops if the count becomes too large. 1503This can occur in poorly written AML when the hardware does not respond 1504within a while loop and the loop does not implement a timeout. The maximum 1505loop count is configurable. A new exception code is returned when a loop is 1506broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1507 1508Optimized the execution of AML While loops. Previously, a control state 1509object was allocated and freed for each execution of the loop. The 1510optimization is to simply reuse the control state for each iteration. This 1511speeds up the raw loop execution time by about 5%. 1512 1513Enhanced the implicit return mechanism. For Windows compatibility, return an 1514implicit integer of value zero for methods that contain no executable code. 1515Such methods are seen in the field as stubs (presumably), and can cause 1516drivers to fail if they expect a return value. Lin Ming. 1517 1518Allow multiple backslashes as root prefixes in namepaths. In a fully 1519qualified namepath, allow multiple backslash prefixes. This can happen (and 1520is seen in the field) because of the use of a double-backslash in strings 1521(since backslash is the escape character) causing confusion. ACPICA BZ 739 1522Lin Ming. 1523 1524Emit a warning if two different FACS or DSDT tables are discovered in the 1525FADT. Checks if there are two valid but different addresses for the FACS and 1526DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1527 1528Consolidated the method argument count validation code. Merged the code that 1529validates control method argument counts into the predefined validation 1530module. Eliminates possible multiple warnings for incorrect argument counts. 1531 1532Implemented ACPICA example code. Includes code for ACPICA initialization, 1533handler installation, and calling a control method. Available at 1534source/tools/examples. 1535 1536Added a global pointer for FACS table to simplify internal FACS access. Use 1537the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1538This simplifies the code for the Global Lock and the Firmware Waking 1539Vector(s). 1540 1541Example Code and Data Size: These are the sizes for the OS-independent 1542acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1543debug version of the code includes the debug output trace mechanism and has a 1544much larger code and data size. 1545 1546 Previous Release: 1547 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1548 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1549 Current Release: 1550 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1551 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1552 15532) iASL Compiler/Disassembler and Tools: 1554 1555iASL: Improved disassembly of external method calls. Added the -e option to 1556allow the inclusion of additional ACPI tables to help with the disassembly of 1557method invocations and the generation of external declarations during the 1558disassembly. Certain external method invocations cannot be disassembled 1559properly without the actual declaration of the method. Use the -e option to 1560include the table where the external method(s) are actually declared. Most 1561useful for disassembling SSDTs that make method calls back to the master 1562DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1563-e dsdt.aml ssdt1.aml 1564 1565iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1566problem where the use of an alias within a namepath would result in a not 1567found error or cause the compiler to fault. Also now allows forward 1568references from the Alias operator itself. ACPICA BZ 738. 1569 1570---------------------------------------- 157126 September 2008. Summary of changes for version 20080926: 1572 15731) ACPI CA Core Subsystem: 1574 1575Designed and implemented a mechanism to validate predefined ACPI methods and 1576objects. This code validates the predefined ACPI objects (objects whose names 1577start with underscore) that appear in the namespace, at the time they are 1578evaluated. The argument count and the type of the returned object are 1579validated against the ACPI specification. The purpose of this validation is 1580to detect problems with the BIOS-implemented predefined ACPI objects before 1581the results are returned to the ACPI-related drivers. Future enhancements may 1582include actual repair of incorrect return objects where possible. Two new 1583files are nspredef.c and acpredef.h. 1584 1585Fixed a fault in the AML parser if a memory allocation fails during the Op 1586completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1587 1588Fixed an issue with implicit return compatibility. This change improves the 1589implicit return mechanism to be more compatible with the MS interpreter. Lin 1590Ming, ACPICA BZ 349. 1591 1592Implemented support for zero-length buffer-to-string conversions. Allow zero 1593length strings during interpreter buffer-to-string conversions. For example, 1594during the ToDecimalString and ToHexString operators, as well as implicit 1595conversions. Fiodor Suietov, ACPICA BZ 585. 1596 1597Fixed two possible memory leaks in the error exit paths of 1598AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1599similar in that they use a stack of state objects in order to eliminate 1600recursion. The stack must be fully unwound and deallocated if an error 1601occurs. Lin Ming. ACPICA BZ 383. 1602 1603Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1604ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1605Moore ACPICA BZ 442. 1606 1607Removed the obsolete version number in module headers. Removed the 1608"$Revision" number that appeared in each module header. This version number 1609was useful under SourceSafe and CVS, but has no meaning under git. It is not 1610only incorrect, it could also be misleading. 1611 1612Example Code and Data Size: These are the sizes for the OS-independent 1613acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1614debug version of the code includes the debug output trace mechanism and has a 1615much larger code and data size. 1616 1617 Previous Release: 1618 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1619 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1620 Current Release: 1621 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1622 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1623 1624---------------------------------------- 162529 August 2008. Summary of changes for version 20080829: 1626 16271) ACPI CA Core Subsystem: 1628 1629Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1630Reference. Changes include the elimination of cheating on the Object field 1631for the DdbHandle subtype, addition of a reference class field to 1632differentiate the various reference types (instead of an AML opcode), and the 1633cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1634 1635Reduce an error to a warning for an incorrect method argument count. 1636Previously aborted with an error if too few arguments were passed to a 1637control method via the external ACPICA interface. Now issue a warning instead 1638and continue. Handles the case where the method inadvertently declares too 1639many arguments, but does not actually use the extra ones. Applies mainly to 1640the predefined methods. Lin Ming. Linux BZ 11032. 1641 1642Disallow the evaluation of named object types with no intrinsic value. Return 1643AE_TYPE for objects that have no value and therefore evaluation is undefined: 1644Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1645these types were allowed, but an exception would be generated at some point 1646during the evaluation. Now, the error is generated up front. 1647 1648Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1649(nsnames.c). Fixes a leak in the error exit path. 1650 1651Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1652levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1653interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1654ACPI_LV_EVENTS. 1655 1656Removed obsolete and/or unused exception codes from the acexcep.h header. 1657There is the possibility that certain device drivers may be affected if they 1658use any of these exceptions. 1659 1660The ACPICA documentation has been added to the public git source tree, under 1661acpica/documents. Included are the ACPICA programmer reference, the iASL 1662compiler reference, and the changes.txt release logfile. 1663 1664Example Code and Data Size: These are the sizes for the OS-independent 1665acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1666debug version of the code includes the debug output trace mechanism and has a 1667much larger code and data size. 1668 1669 Previous Release: 1670 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1671 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1672 Current Release: 1673 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1674 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1675 16762) iASL Compiler/Disassembler and Tools: 1677 1678Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1679defines _SCP with 3 arguments. Previous versions defined it with only 1 1680argument. iASL now allows both definitions. 1681 1682iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1683length subtables when disassembling ACPI tables. Also fixed a couple of 1684errors where a full 16-bit table type field was not extracted from the input 1685properly. 1686 1687acpisrc: Improve comment counting mechanism for generating source code 1688statistics. Count first and last lines of multi-line comments as whitespace, 1689not comment lines. Handle Linux legal header in addition to standard acpica 1690header. 1691 1692---------------------------------------- 1693 169429 July 2008. Summary of changes for version 20080729: 1695 16961) ACPI CA Core Subsystem: 1697 1698Fix a possible deadlock in the GPE dispatch. Remove call to 1699AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1700to acquire the GPE lock but can deadlock since the GPE lock is already held 1701at dispatch time. This code was introduced in version 20060831 as a response 1702to Linux BZ 6881 and has since been removed from Linux. 1703 1704Add a function to dereference returned reference objects. Examines the return 1705object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1706automatically dereferenced in an attempt to return something useful (these 1707reference types cannot be converted into an external ACPI_OBJECT.) Provides 1708MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1709 1710x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1711subtables for the MADT and one new subtable for the SRAT. Includes 1712disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1713Specification, June 2008. 1714 1715Additional error checking for pathname utilities. Add error check after all 1716calls to AcpiNsGetPathnameLength. Add status return from 1717AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1718to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1719 1720Return status from the global init function AcpiUtGlobalInitialize. This is 1721used by both the kernel subsystem and the utilities such as iASL compiler. 1722The function could possibly fail when the caches are initialized. Yang Yi. 1723 1724Add a function to decode reference object types to strings. Created for 1725improved error messages. 1726 1727Improve object conversion error messages. Better error messages during object 1728conversion from internal to the external ACPI_OBJECT. Used for external calls 1729to AcpiEvaluateObject. 1730 1731Example Code and Data Size: These are the sizes for the OS-independent 1732acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1733debug version of the code includes the debug output trace mechanism and has a 1734much larger code and data size. 1735 1736 Previous Release: 1737 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1738 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1739 Current Release: 1740 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1741 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1742 17432) iASL Compiler/Disassembler and Tools: 1744 1745Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1746introduced in version 20080701. If the object being evaluated (via execute 1747command) is not a method, the debugger can hang while trying to obtain non- 1748existent parameters. 1749 1750iASL: relax error for using reserved "_T_x" identifiers. These names can 1751appear in a disassembled ASL file if they were emitted by the original 1752compiler. Instead of issuing an error or warning and forcing the user to 1753manually change these names, issue a remark instead. 1754 1755iASL: error if named object created in while loop. Emit an error if any named 1756object is created within a While loop. If allowed, this code will generate a 1757run-time error on the second iteration of the loop when an attempt is made to 1758create the same named object twice. ACPICA bugzilla 730. 1759 1760iASL: Support absolute pathnames for include files. Add support for absolute 1761pathnames within the Include operator. previously, only relative pathnames 1762were supported. 1763 1764iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1765The ACPI spec requires one interrupt minimum. BZ 423 1766 1767iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1768Handles the case for the Interrupt Resource Descriptor where 1769the ResourceSource argument is omitted but ResourceSourceIndex 1770is present. Now leave room for the Index. BZ 426 1771 1772iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1773where an error message is emitted if the target does not exist. BZ 516 1774 1775iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1776(get ACPI tables on Windows). This was apparently broken in version 20070919. 1777 1778AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1779the EOF happens immediately after the last table in the input file. Print 1780completion message. Previously, no message was displayed in this case. 1781 1782---------------------------------------- 178301 July 2008. Summary of changes for version 20080701: 1784 17850) Git source tree / acpica.org 1786 1787Fixed a problem where a git-clone from http would not transfer the entire 1788source tree. 1789 17901) ACPI CA Core Subsystem: 1791 1792Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1793enable bit. Now performs a read-change-write of the enable register instead 1794of simply writing out the cached enable mask. This will prevent inadvertent 1795enabling of GPEs if a rogue GPE is received during initialization (before GPE 1796handlers are installed.) 1797 1798Implemented a copy for dynamically loaded tables. Previously, dynamically 1799loaded tables were simply mapped - but on some machines this memory is 1800corrupted after suspend. Now copy the table to a local buffer. For the 1801OpRegion case, added checksum verify. Use the table length from the table 1802header, not the region length. For the Buffer case, use the table length 1803also. Dennis Noordsij, Bob Moore. BZ 10734 1804 1805Fixed a problem where the same ACPI table could not be dynamically loaded and 1806unloaded more than once. Without this change, a table cannot be loaded again 1807once it has been loaded/unloaded one time. The current mechanism does not 1808unregister a table upon an unload. During a load, if the same table is found, 1809this no longer returns an exception. BZ 722 1810 1811Fixed a problem where the wrong descriptor length was calculated for the 1812EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1813are calculated as 12 bytes long, but the actual length in the internal 1814descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1815by Linn Crosetto. BZ 728 1816 1817Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1818by Load() did not have its reference count decremented during unload, leading 1819to a memory leak. Lin Ming. BZ 727 1820 1821Fixed a possible memory leak when deleting thermal/processor objects. Any 1822associated notify handlers (and objects) were not being deleted. Fiodor 1823Suietov. BZ 506 1824 1825Fixed the ordering of the ASCII names in the global mutex table to match the 1826actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1827Vegard Nossum. BZ 726 1828 1829Enhanced the AcpiGetObjectInfo interface to return the number of required 1830arguments if the object is a control method. Added this call to the debugger 1831so the proper number of default arguments are passed to a method. This 1832prevents a warning when executing methods from AcpiExec. 1833 1834Added a check for an invalid handle in AcpiGetObjectInfo. Return 1835AE_BAD_PARAMETER if input handle is invalid. BZ 474 1836 1837Fixed an extraneous warning from exconfig.c on the 64-bit build. 1838 1839Example Code and Data Size: These are the sizes for the OS-independent 1840acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1841debug version of the code includes the debug output trace mechanism and has a 1842much larger code and data size. 1843 1844 Previous Release: 1845 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1846 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1847 Current Release: 1848 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1849 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1850 18512) iASL Compiler/Disassembler and Tools: 1852 1853iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1854resource descriptor names. 1855 1856iASL: Detect invalid ASCII characters in input (windows version). Removed the 1857"-CF" flag from the flex compile, enables correct detection of non-ASCII 1858characters in the input. BZ 441 1859 1860iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1861"result of operation not used" warning when the DDB handle returned from 1862LoadTable is not used. The warning is not needed. BZ 590 1863 1864AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1865pass address of table to the AML. Added option to disable OpRegion simulation 1866to allow creation of an OpRegion with a real address that was passed to _CFG. 1867All of this allows testing of the Load and Unload operators from AcpiExec. 1868 1869Debugger: update tables command for unloaded tables. Handle unloaded tables 1870and use the standard table header output routine. 1871 1872---------------------------------------- 187309 June 2008. Summary of changes for version 20080609: 1874 18751) ACPI CA Core Subsystem: 1876 1877Implemented a workaround for reversed _PRT entries. A significant number of 1878BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1879change dynamically detects and repairs this problem. Provides compatibility 1880with MS ACPI. BZ 6859 1881 1882Simplified the internal ACPI hardware interfaces to eliminate the locking 1883flag parameter from Register Read/Write. Added a new external interface, 1884AcpiGetRegisterUnlocked. 1885 1886Fixed a problem where the invocation of a GPE control method could hang. This 1887was a regression introduced in 20080514. The new method argument count 1888validation mechanism can enter an infinite loop when a GPE method is 1889dispatched. Problem fixed by removing the obsolete code that passed GPE block 1890information to the notify handler via the control method parameter pointer. 1891 1892Fixed a problem where the _SST execution status was incorrectly returned to 1893the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 189420080514. _SST is optional and a NOT_FOUND exception should never be 1895returned. BZ 716 1896 1897Fixed a problem where a deleted object could be accessed from within the AML 1898parser. This was a regression introduced in version 20080123 as a fix for the 1899Unload operator. Lin Ming. BZ 10669 1900 1901Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1902and eliminated the use of a negative index in a loop. Operands are now 1903displayed in the correct order, not backwards. This also fixes a regression 1904introduced in 20080514 on 64-bit systems where the elimination of 1905ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1906 1907Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1908path did not delete a locally allocated structure. 1909 1910Updated definitions for the DMAR and SRAT tables to synchronize with the 1911current specifications. Includes disassembler support. 1912 1913Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1914loop termination value was used. Loop terminated on iteration early, missing 1915one mutex. Linn Crosetto 1916 1917Example Code and Data Size: These are the sizes for the OS-independent 1918acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1919debug version of the code includes the debug output trace mechanism and has a 1920much larger code and data size. 1921 1922 Previous Release: 1923 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1924 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1925 Current Release: 1926 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1927 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1928 19292) iASL Compiler/Disassembler and Tools: 1930 1931Disassembler: Implemented support for EisaId() within _CID objects. Now 1932disassemble integer _CID objects back to EisaId invocations, including 1933multiple integers within _CID packages. Includes single-step support for 1934debugger also. 1935 1936Disassembler: Added support for DMAR and SRAT table definition changes. 1937 1938---------------------------------------- 193914 May 2008. Summary of changes for version 20080514: 1940 19411) ACPI CA Core Subsystem: 1942 1943Fixed a problem where GPEs were enabled too early during the ACPICA 1944initialization. This could lead to "handler not installed" errors on some 1945machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1946ensures that all operation regions and devices throughout the namespace have 1947been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1948 1949Implemented a change to the enter sleep code. Moved execution of the _GTS 1950method to just before setting sleep enable bit. The execution was moved from 1951AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1952immediately before the SLP_EN bit is set, as per the ACPI specification. 1953Luming Yu, BZ 1653. 1954 1955Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1956the GPE, even if ACPICA thinks that that it is already disabled. It is 1957possible that the AML or some other code has enabled the GPE unbeknownst to 1958the ACPICA code. 1959 1960Fixed a problem with the Field operator where zero-length fields would return 1961an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1962field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1963 1964Implemented a fix for the Load operator, now load the table at the namespace 1965root. This reverts a change introduced in version 20071019. The table is now 1966loaded at the namespace root even though this goes against the ACPI 1967specification. This provides compatibility with other ACPI implementations. 1968The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1969 1970Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1971Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1972acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1973Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1974signatures, ACPICA must be compatible. BZ 10454. 1975 1976Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1977fields to the exception string arrays to eliminate a -1 subtraction on the 1978SubStatus field. 1979 1980Updated the debug tracking macros to reduce overall code and data size. 1981Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1982instead of pointers to static strings. Jan Beulich and Bob Moore. 1983 1984Implemented argument count checking in control method invocation via 1985AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1986many. This applies only to extern programmatic control method execution, not 1987method-to-method calls within the AML. Lin Ming. 1988 1989Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1990longer needed, especially with the removal of 16-bit support. It was replaced 1991mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 199232/64-bit platforms is required. 1993 1994Added the C const qualifier for appropriate string constants -- mostly 1995MODULE_NAME and printf format strings. Jan Beulich. 1996 1997Example Code and Data Size: These are the sizes for the OS-independent 1998acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1999debug version of the code includes the debug output trace mechanism and has a 2000much larger code and data size. 2001 2002 Previous Release: 2003 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2004 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2005 Current Release: 2006 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 2007 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 2008 20092) iASL Compiler/Disassembler and Tools: 2010 2011Implemented ACPI table revision ID validation in the disassembler. Zero is 2012always invalid. For DSDTs, the ID controls the interpreter integer width. 1 2013means 32-bit and this is unusual. 2 or greater is 64-bit. 2014 2015---------------------------------------- 201621 March 2008. Summary of changes for version 20080321: 2017 20181) ACPI CA Core Subsystem: 2019 2020Implemented an additional change to the GPE support in order to suppress 2021spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 2022disable incoming GPEs that are neither enabled nor disabled -- meaning that 2023the GPE is unknown to the system. This should prevent future interrupt floods 2024from that GPE. BZ 6217 (Zhang Rui) 2025 2026Fixed a problem where NULL package elements were not returned to the 2027AcpiEvaluateObject interface correctly. The element was simply ignored 2028instead of returning a NULL ACPI_OBJECT package element, potentially causing 2029a buffer overflow and/or confusing the caller who expected a fixed number of 2030elements. BZ 10132 (Lin Ming, Bob Moore) 2031 2032Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 2033Qword), Field, BankField, and IndexField operators when invoked from inside 2034an executing control method. In this case, these operators created namespace 2035nodes that were incorrectly left marked as permanent nodes instead of 2036temporary nodes. This could cause a problem if there is race condition 2037between an exiting control method and a running namespace walk. (Reported by 2038Linn Crosetto) 2039 2040Fixed a problem where the CreateField and CreateXXXField operators would 2041incorrectly allow duplicate names (the name of the field) with no exception 2042generated. 2043 2044Implemented several changes for Notify handling. Added support for new Notify 2045values (ACPI 2.0+) and improved the Notify debug output. Notify on 2046PowerResource objects is no longer allowed, as per the ACPI specification. 2047(Bob Moore, Zhang Rui) 2048 2049All Reference Objects returned via the AcpiEvaluateObject interface are now 2050marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 2051NULL objects - either NULL package elements or unresolved named references. 2052 2053Fixed a problem where an extraneous debug message was produced for package 2054objects (when debugging enabled). The message "Package List length larger 2055than NumElements count" is now produced in the correct case, and is now an 2056error message rather than a debug message. Added a debug message for the 2057opposite case, where NumElements is larger than the Package List (the package 2058will be padded out with NULL elements as per the ACPI spec.) 2059 2060Implemented several improvements for the output of the ASL "Debug" object to 2061clarify and keep all data for a given object on one output line. 2062 2063Fixed two size calculation issues with the variable-length Start Dependent 2064resource descriptor. 2065 2066Example Code and Data Size: These are the sizes for the OS-independent 2067acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2068debug version of the code includes the debug output trace mechanism and has 2069a much larger code and data size. 2070 2071 Previous Release: 2072 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2073 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2074 Current Release: 2075 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2076 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2077 20782) iASL Compiler/Disassembler and Tools: 2079 2080Fixed a problem with the use of the Switch operator where execution of the 2081containing method by multiple concurrent threads could cause an 2082AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2083actual Switch opcode, it must be simulated with local named temporary 2084variables and if/else pairs. The solution chosen was to mark any method that 2085uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2086 2087---------------------------------------- 208813 February 2008. Summary of changes for version 20080213: 2089 20901) ACPI CA Core Subsystem: 2091 2092Implemented another MS compatibility design change for GPE/Notify handling. 2093GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2094complete first. It is expected that the OSL will queue the enable request 2095behind all pending notify requests (may require changes to the local host OSL 2096in AcpiOsExecute). Alexey Starikovskiy. 2097 2098Fixed a problem where buffer and package objects passed as arguments to a 2099control method via the external AcpiEvaluateObject interface could cause an 2100AE_AML_INTERNAL exception depending on the order and type of operators 2101executed by the target control method. 2102 2103Fixed a problem where resource descriptor size optimization could cause a 2104problem when a _CRS resource template is passed to a _SRS method. The _SRS 2105resource template must use the same descriptors (with the same size) as 2106returned from _CRS. This change affects the following resource descriptors: 2107IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2108 2109Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2110objects did not perform an implicit conversion as it should. These types must 2111retain their initial type permanently as per the ACPI specification. However, 2112a CopyObject to all other object types should not perform an implicit 2113conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2114 2115Fixed a problem with the AcpiGetDevices interface where the mechanism to 2116match device CIDs did not examine the entire list of available CIDs, but 2117instead aborted on the first non-matching CID. Andrew Patterson. 2118 2119Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2120inadvertently changed to return a 16-bit value instead of a 32-bit value, 2121truncating the upper dword of a 64-bit value. This macro is only used to 2122display debug output, so no incorrect calculations were made. Also, 2123reimplemented the macro so that a 64-bit shift is not performed by 2124inefficient compilers. 2125 2126Added missing va_end statements that should correspond with each va_start 2127statement. 2128 2129Example Code and Data Size: These are the sizes for the OS-independent 2130acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2131debug version of the code includes the debug output trace mechanism and has 2132a much larger code and data size. 2133 2134 Previous Release: 2135 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2136 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2137 Current Release: 2138 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2139 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2140 21412) iASL Compiler/Disassembler and Tools: 2142 2143Implemented full disassembler support for the following new ACPI tables: 2144BERT, EINJ, and ERST. Implemented partial disassembler support for the 2145complicated HEST table. These tables support the Windows Hardware Error 2146Architecture (WHEA). 2147 2148---------------------------------------- 214923 January 2008. Summary of changes for version 20080123: 2150 21511) ACPI CA Core Subsystem: 2152 2153Added the 2008 copyright to all module headers and signons. This affects 2154virtually every file in the ACPICA core subsystem, the iASL compiler, and 2155the tools/utilities. 2156 2157Fixed a problem with the SizeOf operator when used with Package and Buffer 2158objects. These objects have deferred execution for some arguments, and the 2159execution is now completed before the SizeOf is executed. This problem caused 2160unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 21619558 2162 2163Implemented an enhancement to the interpreter "slack mode". In the absence of 2164an explicit return or an implicitly returned object from the last executed 2165opcode, a control method will now implicitly return an integer of value 0 for 2166Microsoft compatibility. (Lin Ming) BZ 392 2167 2168Fixed a problem with the Load operator where an exception was not returned in 2169the case where the table is already loaded. (Lin Ming) BZ 463 2170 2171Implemented support for the use of DDBHandles as an Indexed Reference, as per 2172the ACPI spec. (Lin Ming) BZ 486 2173 2174Implemented support for UserTerm (Method invocation) for the Unload operator 2175as per the ACPI spec. (Lin Ming) BZ 580 2176 2177Fixed a problem with the LoadTable operator where the OemId and OemTableId 2178input strings could cause unexpected failures if they were shorter than the 2179maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2180 2181Implemented support for UserTerm (Method invocation) for the Unload operator 2182as per the ACPI spec. (Lin Ming) BZ 580 2183 2184Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2185IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2186 2187Example Code and Data Size: These are the sizes for the OS-independent 2188acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2189debug version of the code includes the debug output trace mechanism and has 2190a much larger code and data size. 2191 2192 Previous Release: 2193 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2194 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2195 Current Release: 2196 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2197 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2198 21992) iASL Compiler/Disassembler and Tools: 2200 2201Implemented support in the disassembler for checksum validation on incoming 2202binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2203header dump at the start of the disassembly. 2204 2205Implemented additional debugging information in the namespace listing file 2206created during compilation. In addition to the namespace hierarchy, the full 2207pathname to each namespace object is displayed. 2208 2209Fixed a problem with the disassembler where invalid ACPI tables could cause 2210faults or infinite loops. 2211 2212Fixed an unexpected parse error when using the optional "parameter types" 2213list in a control method declaration. (Lin Ming) BZ 397 2214 2215Fixed a problem where two External declarations with the same name did not 2216cause an error (Lin Ming) BZ 509 2217 2218Implemented support for full TermArgs (adding Argx, Localx and method 2219invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2220Ming) BZ 583,587 2221 2222---------------------------------------- 222319 December 2007. Summary of changes for version 20071219: 2224 22251) ACPI CA Core Subsystem: 2226 2227Implemented full support for deferred execution for the TermArg string 2228arguments for DataTableRegion. This enables forward references and full 2229operand resolution for the three string arguments. Similar to OperationRegion 2230deferred argument execution.) Lin Ming. BZ 430 2231 2232Implemented full argument resolution support for the BankValue argument to 2233BankField. Previously, only constants were supported, now any TermArg may be 2234used. Lin Ming BZ 387, 393 2235 2236Fixed a problem with AcpiGetDevices where the search of a branch of the 2237device tree could be terminated prematurely. In accordance with the ACPI 2238specification, the search down the current branch is terminated if a device 2239is both not present and not functional (instead of just not present.) Yakui 2240Zhao. 2241 2242Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2243the underlying AML code changed the GPE enable registers. Now, any unknown 2244incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2245instead of simply ignored. Rui Zhang. 2246 2247Fixed a problem with Index Fields where the Index register was incorrectly 2248limited to a maximum of 32 bits. Now any size may be used. 2249 2250Fixed a couple memory leaks associated with "implicit return" objects when 2251the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2252 2253Example Code and Data Size: These are the sizes for the OS-independent 2254acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2255debug version of the code includes the debug output trace mechanism and has 2256a much larger code and data size. 2257 2258 Previous Release: 2259 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2260 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2261 Current Release: 2262 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2263 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2264 2265---------------------------------------- 226614 November 2007. Summary of changes for version 20071114: 2267 22681) ACPI CA Core Subsystem: 2269 2270Implemented event counters for each of the Fixed Events, the ACPI SCI 2271(interrupt) itself, and control methods executed. Named 2272AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2273should be useful for debugging and statistics. 2274 2275Implemented a new external interface, AcpiGetStatistics, to retrieve the 2276contents of the various event counters. Returns the current values for 2277AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2278AcpiMethodCount. The interface can be expanded in the future if new counters 2279are added. Device drivers should use this interface rather than access the 2280counters directly. 2281 2282Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2283the ShortDivide function worked incorrectly, causing problems with the BCD 2284functions with large input values. A truncation from 64-bit to 32-bit 2285inadvertently occurred. Internal BZ 435. Lin Ming 2286 2287Fixed a problem with Index references passed as method arguments. References 2288passed as arguments to control methods were dereferenced immediately (before 2289control was passed to the called method). The references are now correctly 2290passed directly to the called method. BZ 5389. Lin Ming 2291 2292Fixed a problem with CopyObject used in conjunction with the Index operator. 2293The reference was incorrectly dereferenced before the copy. The reference is 2294now correctly copied. BZ 5391. Lin Ming 2295 2296Fixed a problem with Control Method references within Package objects. These 2297references are now correctly generated. This completes the package 2298construction overhaul that began in version 20071019. 2299 2300Example Code and Data Size: These are the sizes for the OS-independent 2301acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2302debug version of the code includes the debug output trace mechanism and has 2303a much larger code and data size. 2304 2305 Previous Release: 2306 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2307 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2308 Current Release: 2309 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2310 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2311 2312 23132) iASL Compiler/Disassembler and Tools: 2314 2315The AcpiExec utility now installs handlers for all of the predefined 2316Operation Region types. New types supported are: PCI_Config, CMOS, and 2317PCIBARTarget. 2318 2319Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2320bit) address fields for the DSDT and FACS within the FADT were not being 2321used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2322and Bob Moore 2323 2324---------------------------------------- 232519 October 2007. Summary of changes for version 20071019: 2326 23271) ACPI CA Core Subsystem: 2328 2329Fixed a problem with the Alias operator when the target of the alias is a 2330named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2331Processor, and ThermalZone. In these cases, any children of the original 2332operator could not be accessed via the alias, potentially causing unexpected 2333AE_NOT_FOUND exceptions. (BZ 9067) 2334 2335Fixed a problem with the Package operator where all named references were 2336created as object references and left otherwise unresolved. According to the 2337ACPI specification, a Package can only contain Data Objects or references to 2338control methods. The implication is that named references to Data Objects 2339(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2340immediately upon package creation. This is the approach taken with this 2341change. References to all other named objects (Methods, Devices, Scopes, 2342etc.) are all now properly created as reference objects. (BZ 5328) 2343 2344Reverted a change to Notify handling that was introduced in version 234520070508. This version changed the Notify handling from asynchronous to 2346fully synchronous (Device driver Notify handling with respect to the Notify 2347ASL operator). It was found that this change caused more problems than it 2348solved and was removed by most users. 2349 2350Fixed a problem with the Increment and Decrement operators where the type of 2351the target object could be unexpectedly and incorrectly changed. (BZ 353) 2352Lin Ming. 2353 2354Fixed a problem with the Load and LoadTable operators where the table 2355location within the namespace was ignored. Instead, the table was always 2356loaded into the root or current scope. Lin Ming. 2357 2358Fixed a problem with the Load operator when loading a table from a buffer 2359object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2360 2361Fixed a problem with the Debug object where a store of a DdbHandle reference 2362object to the Debug object could cause a fault. 2363 2364Added a table checksum verification for the Load operator, in the case where 2365the load is from a buffer. (BZ 578). 2366 2367Implemented additional parameter validation for the LoadTable operator. The 2368length of the input strings SignatureString, OemIdString, and OemTableId are 2369now checked for maximum lengths. (BZ 582) Lin Ming. 2370 2371Example Code and Data Size: These are the sizes for the OS-independent 2372acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2373debug version of the code includes the debug output trace mechanism and has 2374a much larger code and data size. 2375 2376 Previous Release: 2377 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2378 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2379 Current Release: 2380 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2381 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2382 2383 23842) iASL Compiler/Disassembler: 2385 2386Fixed a problem where if a single file was specified and the file did not 2387exist, no error message was emitted. (Introduced with wildcard support in 2388version 20070917.) 2389 2390---------------------------------------- 239119 September 2007. Summary of changes for version 20070919: 2392 23931) ACPI CA Core Subsystem: 2394 2395Designed and implemented new external interfaces to install and remove 2396handlers for ACPI table-related events. Current events that are defined are 2397LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2398they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2399AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2400 2401Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2402(acpi_serialized option on Linux) could cause some systems to hang during 2403initialization. (Bob Moore) BZ 8171 2404 2405Fixed a problem where objects of certain types (Device, ThermalZone, 2406Processor, PowerResource) can be not found if they are declared and 2407referenced from within the same control method (Lin Ming) BZ 341 2408 2409Example Code and Data Size: These are the sizes for the OS-independent 2410acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2411debug version of the code includes the debug output trace mechanism and has 2412a much larger code and data size. 2413 2414 Previous Release: 2415 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2416 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2417 Current Release: 2418 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2419 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2420 2421 24222) iASL Compiler/Disassembler: 2423 2424Implemented support to allow multiple files to be compiled/disassembled in a 2425single invocation. This includes command line wildcard support for both the 2426Windows and Unix versions of the compiler. This feature simplifies the 2427disassembly and compilation of multiple ACPI tables in a single directory. 2428 2429---------------------------------------- 243008 May 2007. Summary of changes for version 20070508: 2431 24321) ACPI CA Core Subsystem: 2433 2434Implemented a Microsoft compatibility design change for the handling of the 2435Notify AML operator. Previously, notify handlers were dispatched and 2436executed completely asynchronously in a deferred thread. The new design 2437still executes the notify handlers in a different thread, but the original 2438thread that executed the Notify() now waits at a synchronization point for 2439the notify handler to complete. Some machines depend on a synchronous Notify 2440operator in order to operate correctly. 2441 2442Implemented support to allow Package objects to be passed as method 2443arguments to the external AcpiEvaluateObject interface. Previously, this 2444would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2445implemented since there were no reserved control methods that required it 2446until recently. 2447 2448Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2449contained invalid non-zero values in reserved fields could cause later 2450failures because these fields have meaning in later revisions of the FADT. 2451For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2452are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2453 2454Fixed a problem where the Global Lock handle was not properly updated if a 2455thread that acquired the Global Lock via executing AML code then attempted 2456to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2457Liu. 2458 2459Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2460could be corrupted if the interrupt being removed was at the head of the 2461list. Reported by Linn Crosetto. 2462 2463Example Code and Data Size: These are the sizes for the OS-independent 2464acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2465debug version of the code includes the debug output trace mechanism and has 2466a much larger code and data size. 2467 2468 Previous Release: 2469 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2470 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2471 Current Release: 2472 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2473 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2474 2475---------------------------------------- 247620 March 2007. Summary of changes for version 20070320: 2477 24781) ACPI CA Core Subsystem: 2479 2480Implemented a change to the order of interpretation and evaluation of AML 2481operand objects within the AML interpreter. The interpreter now evaluates 2482operands in the order that they appear in the AML stream (and the 2483corresponding ASL code), instead of in the reverse order (after the entire 2484operand list has been parsed). The previous behavior caused several subtle 2485incompatibilities with the Microsoft AML interpreter as well as being 2486somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2487 2488Implemented a change to the ACPI Global Lock support. All interfaces to the 2489global lock now allow the same thread to acquire the lock multiple times. 2490This affects the AcpiAcquireGlobalLock external interface to the global lock 2491as well as the internal use of the global lock to support AML fields -- a 2492control method that is holding the global lock can now simultaneously access 2493AML fields that require global lock protection. Previously, in both cases, 2494this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2495AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2496Controller. There is no change to the behavior of the AML Acquire operator, 2497as this can already be used to acquire a mutex multiple times by the same 2498thread. BZ 8066. With assistance from Alexey Starikovskiy. 2499 2500Fixed a problem where invalid objects could be referenced in the AML 2501Interpreter after error conditions. During operand evaluation, ensure that 2502the internal "Return Object" field is cleared on error and only valid 2503pointers are stored there. Caused occasional access to deleted objects that 2504resulted in "large reference count" warning messages. Valery Podrezov. 2505 2506Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2507deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2508Podrezov. 2509 2510Fixed an internal problem with the handling of result objects on the 2511interpreter result stack. BZ 7872. Valery Podrezov. 2512 2513Removed obsolete code that handled the case where AML_NAME_OP is the target 2514of a reference (Reference.Opcode). This code was no longer necessary. BZ 25157874. Valery Podrezov. 2516 2517Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2518remnant from the previously discontinued 16-bit support. 2519 2520Example Code and Data Size: These are the sizes for the OS-independent 2521acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2522debug version of the code includes the debug output trace mechanism and has 2523a much larger code and data size. 2524 2525 Previous Release: 2526 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2527 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2528 Current Release: 2529 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2530 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2531 2532---------------------------------------- 253326 January 2007. Summary of changes for version 20070126: 2534 25351) ACPI CA Core Subsystem: 2536 2537Added the 2007 copyright to all module headers and signons. This affects 2538virtually every file in the ACPICA core subsystem, the iASL compiler, and 2539the utilities. 2540 2541Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2542during a table load. A bad pointer was passed in the case where the DSDT is 2543overridden, causing a fault in this case. 2544 2545Example Code and Data Size: These are the sizes for the OS-independent 2546acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2547debug version of the code includes the debug output trace mechanism and has 2548a much larger code and data size. 2549 2550 Previous Release: 2551 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2552 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2553 Current Release: 2554 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2555 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2556 2557---------------------------------------- 255815 December 2006. Summary of changes for version 20061215: 2559 25601) ACPI CA Core Subsystem: 2561 2562Support for 16-bit ACPICA has been completely removed since it is no longer 2563necessary and it clutters the code. All 16-bit macros, types, and 2564conditional compiles have been removed, cleaning up and simplifying the code 2565across the entire subsystem. DOS support is no longer needed since the 2566bootable Linux firmware kit is now available. 2567 2568The handler for the Global Lock is now removed during AcpiTerminate to 2569enable a clean subsystem restart, via the implementation of the 2570AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2571HP) 2572 2573Implemented enhancements to the multithreading support within the debugger 2574to enable improved multithreading debugging and evaluation of the subsystem. 2575(Valery Podrezov) 2576 2577Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2578memory used during the execution, as well as the maximum memory consumed by 2579each of the various object types. (Valery Podrezov) 2580 2581Example Code and Data Size: These are the sizes for the OS-independent 2582acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2583debug version of the code includes the debug output trace mechanism and has 2584a much larger code and data size. 2585 2586 Previous Release: 2587 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2588 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2589 Current Release: 2590 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2591 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2592 2593 25942) iASL Compiler/Disassembler and Tools: 2595 2596AcpiExec: Implemented a new option (-m) to display full memory use 2597statistics upon subsystem/program termination. (Valery Podrezov) 2598 2599---------------------------------------- 260009 November 2006. Summary of changes for version 20061109: 2601 26021) ACPI CA Core Subsystem: 2603 2604Optimized the Load ASL operator in the case where the source operand is an 2605operation region. Simply map the operation region memory, instead of 2606performing a bytewise read. (Region must be of type SystemMemory, see 2607below.) 2608 2609Fixed the Load ASL operator for the case where the source operand is a 2610region field. A buffer object is also allowed as the source operand. BZ 480 2611 2612Fixed a problem where the Load ASL operator allowed the source operand to be 2613an operation region of any type. It is now restricted to regions of type 2614SystemMemory, as per the ACPI specification. BZ 481 2615 2616Additional cleanup and optimizations for the new Table Manager code. 2617 2618AcpiEnable will now fail if all of the required ACPI tables are not loaded 2619(FADT, FACS, DSDT). BZ 477 2620 2621Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2622header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2623manually optimized to be aligned and will not work if it is byte-packed. 2624 2625Example Code and Data Size: These are the sizes for the OS-independent 2626acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2627debug version of the code includes the debug output trace mechanism and has 2628a much larger code and data size. 2629 2630 Previous Release: 2631 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2632 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2633 Current Release: 2634 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2635 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2636 2637 26382) iASL Compiler/Disassembler and Tools: 2639 2640Fixed a problem where the presence of the _OSI predefined control method 2641within complex expressions could cause an internal compiler error. 2642 2643AcpiExec: Implemented full region support for multiple address spaces. 2644SpaceId is now part of the REGION object. BZ 429 2645 2646---------------------------------------- 264711 October 2006. Summary of changes for version 20061011: 2648 26491) ACPI CA Core Subsystem: 2650 2651Completed an AML interpreter performance enhancement for control method 2652execution. Previously a 2-pass parse/execution, control methods are now 2653completely parsed and executed in a single pass. This improves overall 2654interpreter performance by ~25%, reduces code size, and reduces CPU stack 2655use. (Valery Podrezov + interpreter changes in version 20051202 that 2656eliminated namespace loading during the pass one parse.) 2657 2658Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2659match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2660obtained and also checked for an ID match. 2661 2662Implemented additional support for the PCI _ADR execution: upsearch until a 2663device scope is found before executing _ADR. This allows PCI_Config 2664operation regions to be declared locally within control methods underneath 2665PCI device objects. 2666 2667Fixed a problem with a possible race condition between threads executing 2668AcpiWalkNamespace and the AML interpreter. This condition was removed by 2669modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2670entries created during any concurrent control method execution. An 2671additional namespace race condition is known to exist between 2672AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2673investigation. 2674 2675Restructured the AML ParseLoop function, breaking it into several 2676subfunctions in order to reduce CPU stack use and improve maintainability. 2677(Mikhail Kouzmich) 2678 2679AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2680of prefix handle and pathname. BZ 478 2681 2682Example Code and Data Size: These are the sizes for the OS-independent 2683acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2684debug version of the code includes the debug output trace mechanism and has 2685a much larger code and data size. 2686 2687 Previous Release: 2688 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2689 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2690 Current Release: 2691 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2692 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2693 26942) iASL Compiler/Disassembler and Tools: 2695 2696Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2697to restore original behavior. 2698 2699---------------------------------------- 270027 September 2006. Summary of changes for version 20060927: 2701 27021) ACPI CA Core Subsystem: 2703 2704Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2705These functions now use a spinlock for mutual exclusion and the interrupt 2706level indication flag is not needed. 2707 2708Fixed a problem with the Global Lock where the lock could appear to be 2709obtained before it is actually obtained. The global lock semaphore was 2710inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2711Suietov. 2712 2713Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2714a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2715 2716Example Code and Data Size: These are the sizes for the OS-independent 2717acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2718debug version of the code includes the debug output trace mechanism and has 2719a much larger code and data size. 2720 2721 Previous Release: 2722 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2723 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2724 Current Release: 2725 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2726 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2727 2728 27292) iASL Compiler/Disassembler and Tools: 2730 2731Fixed a compilation problem with the pre-defined Resource Descriptor field 2732names where an "object does not exist" error could be incorrectly generated 2733if the parent ResourceTemplate pathname places the template within a 2734different namespace scope than the current scope. (BZ 7212) 2735 2736Fixed a problem where the compiler could hang after syntax errors detected 2737in an ElseIf construct. (BZ 453) 2738 2739Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2740operator. An incorrect output filename was produced when this parameter was 2741a null string (""). Now, the original input filename is used as the AML 2742output filename, with an ".aml" extension. 2743 2744Implemented a generic batch command mode for the AcpiExec utility (execute 2745any AML debugger command) (Valery Podrezov). 2746 2747---------------------------------------- 274812 September 2006. Summary of changes for version 20060912: 2749 27501) ACPI CA Core Subsystem: 2751 2752Enhanced the implementation of the "serialized mode" of the interpreter 2753(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2754specified, instead of creating a serialization semaphore per control method, 2755the interpreter lock is simply no longer released before a blocking 2756operation during control method execution. This effectively makes the AML 2757Interpreter single-threaded. The overhead of a semaphore per-method is 2758eliminated. 2759 2760Fixed a regression where an error was no longer emitted if a control method 2761attempts to create 2 objects of the same name. This once again returns 2762AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2763will dynamically serialize the control method to possible prevent future 2764errors. (BZ 440) 2765 2766Integrated a fix for a problem with PCI Express HID detection in the PCI 2767Config Space setup procedure. (BZ 7145) 2768 2769Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2770AcpiHwInitialize function - the FADT registers are now validated when the 2771table is loaded. 2772 2773Added two new warnings during FADT verification - 1) if the FADT is larger 2774than the largest known FADT version, and 2) if there is a mismatch between a 277532-bit block address and the 64-bit X counterpart (when both are non-zero.) 2776 2777Example Code and Data Size: These are the sizes for the OS-independent 2778acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2779debug version of the code includes the debug output trace mechanism and has 2780a much larger code and data size. 2781 2782 Previous Release: 2783 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2784 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2785 Current Release: 2786 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2787 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2788 2789 27902) iASL Compiler/Disassembler and Tools: 2791 2792Fixed a problem with the implementation of the Switch() operator where the 2793temporary variable was declared too close to the actual Switch, instead of 2794at method level. This could cause a problem if the Switch() operator is 2795within a while loop, causing an error on the second iteration. (BZ 460) 2796 2797Disassembler - fix for error emitted for unknown type for target of scope 2798operator. Now, ignore it and continue. 2799 2800Disassembly of an FADT now verifies the input FADT and reports any errors 2801found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2802 2803Disassembly of raw data buffers with byte initialization data now prefixes 2804each output line with the current buffer offset. 2805 2806Disassembly of ASF! table now includes all variable-length data fields at 2807the end of some of the subtables. 2808 2809The disassembler now emits a comment if a buffer appears to be a 2810ResourceTemplate, but cannot be disassembled as such because the EndTag does 2811not appear at the very end of the buffer. 2812 2813AcpiExec - Added the "-t" command line option to enable the serialized mode 2814of the AML interpreter. 2815 2816---------------------------------------- 281731 August 2006. Summary of changes for version 20060831: 2818 28191) ACPI CA Core Subsystem: 2820 2821Miscellaneous fixes for the Table Manager: 2822- Correctly initialize internal common FADT for all 64-bit "X" fields 2823- Fixed a couple table mapping issues during table load 2824- Fixed a couple alignment issues for IA64 2825- Initialize input array to zero in AcpiInitializeTables 2826- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2827AcpiGetTableByIndex 2828 2829Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2830immediately disabled to prevent the waking GPE from firing again and to 2831prevent other wake GPEs from interrupting the wake process. 2832 2833Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2834be used for debugging systems with a large number of ACPI interrupts. 2835 2836Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2837both the ACPICA headers and the disassembler. 2838 2839Example Code and Data Size: These are the sizes for the OS-independent 2840acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2841debug version of the code includes the debug output trace mechanism and has 2842a much larger code and data size. 2843 2844 Previous Release: 2845 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2846 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2847 Current 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 2851 28522) iASL Compiler/Disassembler and Tools: 2853 2854Disassembler support for the DMAR ACPI table. 2855 2856---------------------------------------- 285723 August 2006. Summary of changes for version 20060823: 2858 28591) ACPI CA Core Subsystem: 2860 2861The Table Manager component has been completely redesigned and 2862reimplemented. The new design is much simpler, and reduces the overall code 2863and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2864now possible to obtain the ACPI tables very early during kernel 2865initialization, even before dynamic memory management is initialized. 2866(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2867 2868Obsolete ACPICA interfaces: 2869 2870- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2871time). 2872- AcpiLoadTable: Not needed. 2873- AcpiUnloadTable: Not needed. 2874 2875New ACPICA interfaces: 2876 2877- AcpiInitializeTables: Must be called before the table manager can be used. 2878- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2879allocated memory after it becomes available. 2880- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2881in the RSDT/XSDT. 2882 2883Other ACPICA changes: 2884 2885- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2886AcpiOsUnmapMemory to free this mapping. 2887- AcpiGetTable returns the actual mapped table. The mapping is managed 2888internally and must not be deleted by the caller. Use of this interface 2889causes no additional dynamic memory allocation. 2890- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2891it appeared to be unused. 2892- The interface to AcpiOsMapMemory has changed to be consistent with the 2893other allocation interfaces. 2894- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2895parameters. 2896- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2897bit platforms. Was previously 64 bits on all platforms. 2898- The interface to the ACPI Global Lock acquire/release macros have changed 2899slightly since ACPICA no longer keeps a local copy of the FACS with a 2900constructed pointer to the actual global lock. 2901 2902Porting to the new table manager: 2903 2904- AcpiInitializeTables: Must be called once, and can be called anytime 2905during the OS initialization process. It allows the host to specify an area 2906of memory to be used to store the internal version of the RSDT/XSDT (root 2907table). This allows the host to access ACPI tables before memory management 2908is initialized and running. 2909- AcpiReallocateRootTable: Can be called after memory management is running 2910to copy the root table to a dynamically allocated array, freeing up the 2911scratch memory specified in the call to AcpiInitializeTables. 2912- AcpiSubsystemInitialize: This existing interface is independent of the 2913Table Manager, and does not have to be called before the Table Manager can 2914be used, it only must be called before the rest of ACPICA can be used. 2915- ACPI Tables: Some changes have been made to the names and structure of the 2916actbl.h and actbl1.h header files and may require changes to existing code. 2917For example, bitfields have been completely removed because of their lack of 2918portability across C compilers. 2919- Update interfaces to the Global Lock acquire/release macros if local 2920versions are used. (see acwin.h) 2921 2922Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2923 2924New files: tbfind.c 2925 2926Example Code and Data Size: These are the sizes for the OS-independent 2927acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2928debug version of the code includes the debug output trace mechanism and has 2929a much larger code and data size. 2930 2931 Previous Release: 2932 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2933 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2934 Current Release: 2935 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2936 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2937 2938 29392) iASL Compiler/Disassembler and Tools: 2940 2941No changes for this release. 2942 2943---------------------------------------- 294421 July 2006. Summary of changes for version 20060721: 2945 29461) ACPI CA Core Subsystem: 2947 2948The full source code for the ASL test suite used to validate the iASL 2949compiler and the ACPICA core subsystem is being released with the ACPICA 2950source for the first time. The source is contained in a separate package and 2951consists of over 1100 files that exercise all ASL/AML operators. The package 2952should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2953Suietov) 2954 2955Completed a new design and implementation for support of the ACPI Global 2956Lock. On the OS side, the global lock is now treated as a standard AML 2957mutex. Previously, multiple OS threads could "acquire" the global lock 2958simultaneously. However, this could cause the BIOS to be starved out of the 2959lock - especially in cases such as the Embedded Controller driver where 2960there is a tight coupling between the OS and the BIOS. 2961 2962Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2963The Global Lock interrupt handler no longer queues the execution of a 2964separate thread to signal the global lock semaphore. Instead, the semaphore 2965is signaled directly from the interrupt handler. 2966 2967Implemented support within the AML interpreter for package objects that 2968contain a larger AML length (package list length) than the package element 2969count. In this case, the length of the package is truncated to match the 2970package element count. Some BIOS code apparently modifies the package length 2971on the fly, and this change supports this behavior. Provides compatibility 2972with the MS AML interpreter. (With assistance from Fiodor Suietov) 2973 2974Implemented a temporary fix for the BankValue parameter of a Bank Field to 2975support all constant values, now including the Zero and One opcodes. 2976Evaluation of this parameter must eventually be converted to a full TermArg 2977evaluation. A not-implemented error is now returned (temporarily) for non- 2978constant values for this parameter. 2979 2980Fixed problem reports (Fiodor Suietov) integrated: 2981- Fix for premature object deletion after CopyObject on Operation Region (BZ 2982350) 2983 2984Example Code and Data Size: These are the sizes for the OS-independent 2985acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2986debug version of the code includes the debug output trace mechanism and has 2987a much larger code and data size. 2988 2989 Previous Release: 2990 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2991 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2992 Current Release: 2993 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2994 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2995 2996 29972) iASL Compiler/Disassembler and Tools: 2998 2999No changes for this release. 3000 3001---------------------------------------- 300207 July 2006. Summary of changes for version 20060707: 3003 30041) ACPI CA Core Subsystem: 3005 3006Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 3007that do not allow the initialization of address pointers within packed 3008structures - even though the hardware itself may support misaligned 3009transfers. Some of the debug data structures are packed by default to 3010minimize size. 3011 3012Added an error message for the case where AcpiOsGetThreadId() returns zero. 3013A non-zero value is required by the core ACPICA code to ensure the proper 3014operation of AML mutexes and recursive control methods. 3015 3016The DSDT is now the only ACPI table that determines whether the AML 3017interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 3018the hooks for per-table 32/64 switching have been removed from the code. A 3019clarification to the ACPI specification is forthcoming in ACPI 3.0B. 3020 3021Fixed a possible leak of an OwnerID in the error path of 3022AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 3023deletion to a single place in AcpiTbUninstallTable to correct possible leaks 3024when using the AcpiTbDeleteTablesByType interface (with assistance from 3025Lance Ortiz.) 3026 3027Fixed a problem with Serialized control methods where the semaphore 3028associated with the method could be over-signaled after multiple method 3029invocations. 3030 3031Fixed two issues with the locking of the internal namespace data structure. 3032Both the Unload() operator and AcpiUnloadTable interface now lock the 3033namespace during the namespace deletion associated with the table unload 3034(with assistance from Linn Crosetto.) 3035 3036Fixed problem reports (Valery Podrezov) integrated: 3037- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 3038 3039Fixed problem reports (Fiodor Suietov) integrated: 3040- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 3041- On Address Space handler deletion, needless deactivation call (BZ 374) 3042- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 3043- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 3044(BZ 376) 3045- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 3046- Minimum Length of RSDT should be validated (BZ 379) 3047- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 3048Handler (BZ (380) 3049- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 3050(BZ 381) 3051 3052Example Code and Data Size: These are the sizes for the OS-independent 3053acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3054debug version of the code includes the debug output trace mechanism and has 3055a much larger code and data size. 3056 3057 Previous Release: 3058 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3059 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3060 Current Release: 3061 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 3062 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 3063 3064 30652) iASL Compiler/Disassembler and Tools: 3066 3067Fixed problem reports: 3068Compiler segfault when ASL contains a long (>1024) String declaration (BZ 3069436) 3070 3071---------------------------------------- 307223 June 2006. Summary of changes for version 20060623: 3073 30741) ACPI CA Core Subsystem: 3075 3076Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3077allows the type to be customized to the host OS for improved efficiency 3078(since a spinlock is usually a very small object.) 3079 3080Implemented support for "ignored" bits in the ACPI registers. According to 3081the ACPI specification, these bits should be preserved when writing the 3082registers via a read/modify/write cycle. There are 3 bits preserved in this 3083manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3084 3085Implemented the initial deployment of new OSL mutex interfaces. Since some 3086host operating systems have separate mutex and semaphore objects, this 3087feature was requested. The base code now uses mutexes (and the new mutex 3088interfaces) wherever a binary semaphore was used previously. However, for 3089the current release, the mutex interfaces are defined as macros to map them 3090to the existing semaphore interfaces. Therefore, no OSL changes are required 3091at this time. (See acpiosxf.h) 3092 3093Fixed several problems with the support for the control method SyncLevel 3094parameter. The SyncLevel now works according to the ACPI specification and 3095in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3096is a property of the executing thread. Mutual exclusion for control methods 3097is now implemented with a mutex instead of a semaphore. 3098 3099Fixed three instances of the use of the C shift operator in the bitfield 3100support code (exfldio.c) to avoid the use of a shift value larger than the 3101target data width. The behavior of C compilers is undefined in this case and 3102can cause unpredictable results, and therefore the case must be detected and 3103avoided. (Fiodor Suietov) 3104 3105Added an info message whenever an SSDT or OEM table is loaded dynamically 3106via the Load() or LoadTable() ASL operators. This should improve debugging 3107capability since it will show exactly what tables have been loaded (beyond 3108the tables present in the RSDT/XSDT.) 3109 3110Example Code and Data Size: These are the sizes for the OS-independent 3111acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3112debug version of the code includes the debug output trace mechanism and has 3113a much larger code and data size. 3114 3115 Previous Release: 3116 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3117 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3118 Current Release: 3119 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3120 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3121 3122 31232) iASL Compiler/Disassembler and Tools: 3124 3125No changes for this release. 3126 3127---------------------------------------- 312808 June 2006. Summary of changes for version 20060608: 3129 31301) ACPI CA Core Subsystem: 3131 3132Converted the locking mutex used for the ACPI hardware to a spinlock. This 3133change should eliminate all problems caused by attempting to acquire a 3134semaphore at interrupt level, and it means that all ACPICA external 3135interfaces that directly access the ACPI hardware can be safely called from 3136interrupt level. OSL code that implements the semaphore interfaces should be 3137able to eliminate any workarounds for being called at interrupt level. 3138 3139Fixed a regression introduced in 20060526 where the ACPI device 3140initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3141did not have an optional _INI method. 3142 3143Fixed an IndexField issue where a write to the Data Register should be 3144limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3145Fiodor Suietov) 3146 3147Fixed problem reports (Valery Podrezov) integrated: 3148- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3149 3150Fixed problem reports (Fiodor Suietov) integrated: 3151- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3152 3153Removed four global mutexes that were obsolete and were no longer being 3154used. 3155 3156Example Code and Data Size: These are the sizes for the OS-independent 3157acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3158debug version of the code includes the debug output trace mechanism and has 3159a much larger code and data size. 3160 3161 Previous Release: 3162 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3163 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3164 Current Release: 3165 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3166 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3167 3168 31692) iASL Compiler/Disassembler and Tools: 3170 3171Fixed a fault when using -g option (get tables from registry) on Windows 3172machines. 3173 3174Fixed problem reports integrated: 3175- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3176- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3177Suietov) 3178- Global table revision override (-r) is ignored (BZ 413) 3179 3180---------------------------------------- 318126 May 2006. Summary of changes for version 20060526: 3182 31831) ACPI CA Core Subsystem: 3184 3185Restructured, flattened, and simplified the internal interfaces for 3186namespace object evaluation - resulting in smaller code, less CPU stack use, 3187and fewer interfaces. (With assistance from Mikhail Kouzmich) 3188 3189Fixed a problem with the CopyObject operator where the first parameter was 3190not typed correctly for the parser, interpreter, compiler, and disassembler. 3191Caused various errors and unexpected behavior. 3192 3193Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3194produced incorrect results with some C compilers. Since the behavior of C 3195compilers when the shift value is larger than the datatype width is 3196apparently not well defined, the interpreter now detects this condition and 3197simply returns zero as expected in all such cases. (BZ 395) 3198 3199Fixed problem reports (Valery Podrezov) integrated: 3200- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3201- Allow interpreter to handle nested method declarations (BZ 5361) 3202 3203Fixed problem reports (Fiodor Suietov) integrated: 3204- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3205- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3206- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3207- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3208- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3209- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3210- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3211- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3212- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3213- Status of the Global Initialization Handler call not used (BZ 366) 3214- Incorrect object parameter to Global Initialization Handler (BZ 367) 3215 3216Example Code and Data Size: These are the sizes for the OS-independent 3217acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3218debug version of the code includes the debug output trace mechanism and has 3219a much larger code and data size. 3220 3221 Previous Release: 3222 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3223 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3224 Current Release: 3225 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3226 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3227 3228 32292) iASL Compiler/Disassembler and Tools: 3230 3231Modified the parser to allow the names IO, DMA, and IRQ to be used as 3232namespace identifiers with no collision with existing resource descriptor 3233macro names. This provides compatibility with other ASL compilers and is 3234most useful for disassembly/recompilation of existing tables without parse 3235errors. (With assistance from Thomas Renninger) 3236 3237Disassembler: fixed an incorrect disassembly problem with the 3238DataTableRegion and CopyObject operators. Fixed a possible fault during 3239disassembly of some Alias operators. 3240 3241---------------------------------------- 324212 May 2006. Summary of changes for version 20060512: 3243 32441) ACPI CA Core Subsystem: 3245 3246Replaced the AcpiOsQueueForExecution interface with a new interface named 3247AcpiOsExecute. The major difference is that the new interface does not have 3248a Priority parameter, this appeared to be useless and has been replaced by a 3249Type parameter. The Type tells the host what type of execution is being 3250requested, such as global lock handler, notify handler, GPE handler, etc. 3251This allows the host to queue and execute the request as appropriate for the 3252request type, possibly using different work queues and different priorities 3253for the various request types. This enables fixes for multithreading 3254deadlock problems such as BZ #5534, and will require changes to all existing 3255OS interface layers. (Alexey Starikovskiy and Bob Moore) 3256 3257Fixed a possible memory leak associated with the support for the so-called 3258"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3259Suietov) 3260 3261Fixed a problem with the Load() operator where a table load from an 3262operation region could overwrite an internal table buffer by up to 7 bytes 3263and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3264 3265Example Code and Data Size: These are the sizes for the OS-independent 3266acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3267debug version of the code includes the debug output trace mechanism and has 3268a much larger code and data size. 3269 3270 Previous Release: 3271 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3272 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3273 Current Release: 3274 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3275 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3276 3277 3278 32792) iASL Compiler/Disassembler and Tools: 3280 3281Disassembler: Implemented support to cross reference the internal namespace 3282and automatically generate ASL External() statements for symbols not defined 3283within the current table being disassembled. This will simplify the 3284disassembly and recompilation of interdependent tables such as SSDTs since 3285these statements will no longer have to be added manually. 3286 3287Disassembler: Implemented experimental support to automatically detect 3288invocations of external control methods and generate appropriate External() 3289statements. This is problematic because the AML cannot be correctly parsed 3290until the number of arguments for each control method is known. Currently, 3291standalone method invocations and invocations as the source operand of a 3292Store() statement are supported. 3293 3294Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3295LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3296LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3297more readable and likely closer to the original ASL source. 3298 3299---------------------------------------- 330021 April 2006. Summary of changes for version 20060421: 3301 33021) ACPI CA Core Subsystem: 3303 3304Removed a device initialization optimization introduced in 20051216 where 3305the _STA method was not run unless an _INI was also present for the same 3306device. This optimization could cause problems because it could allow _INI 3307methods to be run within a not-present device subtree. (If a not-present 3308device had no _INI, _STA would not be run, the not-present status would not 3309be discovered, and the children of the device would be incorrectly 3310traversed.) 3311 3312Implemented a new _STA optimization where namespace subtrees that do not 3313contain _INI are identified and ignored during device initialization. 3314Selectively running _STA can significantly improve boot time on large 3315machines (with assistance from Len Brown.) 3316 3317Implemented support for the device initialization case where the returned 3318_STA flags indicate a device not-present but functioning. In this case, _INI 3319is not run, but the device children are examined for presence, as per the 3320ACPI specification. 3321 3322Implemented an additional change to the IndexField support in order to 3323conform to MS behavior. The value written to the Index Register is not 3324simply a byte offset, it is a byte offset in units of the access width of 3325the parent Index Field. (Fiodor Suietov) 3326 3327Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3328interface is called during the creation of all AML operation regions, and 3329allows the host OS to exert control over what addresses it will allow the 3330AML code to access. Operation Regions whose addresses are disallowed will 3331cause a runtime exception when they are actually accessed (will not affect 3332or abort table loading.) See oswinxf or osunixxf for an example 3333implementation. 3334 3335Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3336interface allows the host OS to match the various "optional" 3337interface/behavior strings for the _OSI predefined control method as 3338appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3339for an example implementation. 3340 3341Restructured and corrected various problems in the exception handling code 3342paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3343(with assistance from Takayoshi Kochi.) 3344 3345Modified the Linux source converter to ignore quoted string literals while 3346converting identifiers from mixed to lower case. This will correct problems 3347with the disassembler and other areas where such strings must not be 3348modified. 3349 3350The ACPI_FUNCTION_* macros no longer require quotes around the function 3351name. This allows the Linux source converter to convert the names, now that 3352the converter ignores quoted strings. 3353 3354Example Code and Data Size: These are the sizes for the OS-independent 3355acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3356debug version of the code includes the debug output trace mechanism and has 3357a much larger code and data size. 3358 3359 Previous Release: 3360 3361 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3362 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3363 Current Release: 3364 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3365 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3366 3367 33682) iASL Compiler/Disassembler and Tools: 3369 3370Implemented 3 new warnings for iASL, and implemented multiple warning levels 3371(w2 flag). 3372 33731) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3374WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3375check for the possible timeout, a warning is issued. 3376 33772) Useless operators: If an ASL operator does not specify an optional target 3378operand and it also does not use the function return value from the 3379operator, a warning is issued since the operator effectively does nothing. 3380 33813) Unreferenced objects: If a namespace object is created, but never 3382referenced, a warning is issued. This is a warning level 2 since there are 3383cases where this is ok, such as when a secondary table is loaded that uses 3384the unreferenced objects. Even so, care is taken to only flag objects that 3385don't look like they will ever be used. For example, the reserved methods 3386(starting with an underscore) are usually not referenced because it is 3387expected that the OS will invoke them. 3388 3389---------------------------------------- 339031 March 2006. Summary of changes for version 20060331: 3391 33921) ACPI CA Core Subsystem: 3393 3394Implemented header file support for the following additional ACPI tables: 3395ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3396all current and known ACPI tables are now defined in the ACPICA headers and 3397are available for use by device drivers and other software. 3398 3399Implemented support to allow tables that contain ACPI names with invalid 3400characters to be loaded. Previously, this would cause the table load to 3401fail, but since there are several known cases of such tables on existing 3402machines, this change was made to enable ACPI support for them. Also, this 3403matches the behavior of the Microsoft ACPI implementation. 3404 3405Fixed a couple regressions introduced during the memory optimization in the 340620060317 release. The namespace node definition required additional 3407reorganization and an internal datatype that had been changed to 8-bit was 3408restored to 32-bit. (Valery Podrezov) 3409 3410Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3411could be passed through to AcpiOsReleaseObject which is unexpected. Such 3412null pointers are now trapped and ignored, matching the behavior of the 3413previous implementation before the deployment of AcpiOsReleaseObject. 3414(Valery Podrezov, Fiodor Suietov) 3415 3416Fixed a memory mapping leak during the deletion of a SystemMemory operation 3417region where a cached memory mapping was not deleted. This became a 3418noticeable problem for operation regions that are defined within frequently 3419used control methods. (Dana Meyers) 3420 3421Reorganized the ACPI table header files into two main files: one for the 3422ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3423ACPI tables that are consumed by the drivers and other software. The various 3424FADT definitions were merged into one common section and three different 3425tables (ACPI 1.0, 1.0+, and 2.0) 3426 3427Example Code and Data Size: These are the sizes for the OS-independent 3428acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3429debug version of the code includes the debug output trace mechanism and has 3430a much larger code and data size. 3431 3432 Previous Release: 3433 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3434 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3435 Current Release: 3436 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3437 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3438 3439 34402) iASL Compiler/Disassembler and Tools: 3441 3442Disassembler: Implemented support to decode and format all non-AML ACPI 3443tables (tables other than DSDTs and SSDTs.) This includes the new tables 3444added to the ACPICA headers, therefore all current and known ACPI tables are 3445supported. 3446 3447Disassembler: The change to allow ACPI names with invalid characters also 3448enables the disassembly of such tables. Invalid characters within names are 3449changed to '*' to make the name printable; the iASL compiler will still 3450generate an error for such names, however, since this is an invalid ACPI 3451character. 3452 3453Implemented an option for AcpiXtract (-a) to extract all tables found in the 3454input file. The default invocation extracts only the DSDTs and SSDTs. 3455 3456Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3457makefile for the AcpiXtract utility. 3458 3459---------------------------------------- 346017 March 2006. Summary of changes for version 20060317: 3461 34621) ACPI CA Core Subsystem: 3463 3464Implemented the use of a cache object for all internal namespace nodes. 3465Since there are about 1000 static nodes in a typical system, this will 3466decrease memory use for cache implementations that minimize per-allocation 3467overhead (such as a slab allocator.) 3468 3469Removed the reference count mechanism for internal namespace nodes, since it 3470was deemed unnecessary. This reduces the size of each namespace node by 3471about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3472and 32 bytes for the 64-bit case. 3473 3474Optimized several internal data structures to reduce object size on 64-bit 3475platforms by packing data within the 64-bit alignment. This includes the 3476frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3477instances corresponding to the namespace objects. 3478 3479Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3480and "Windows 2006". 3481 3482Split the allocation tracking mechanism out to a separate file, from 3483utalloc.c to uttrack.c. This mechanism appears to be only useful for 3484application-level code. Kernels may wish to not include uttrack.c in 3485distributions. 3486 3487Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3488code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3489macros.) 3490 3491Code and Data Size: These are the sizes for the acpica.lib produced by the 3492Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3493driver or OSPM code. The debug version of the code includes the debug output 3494trace mechanism and has a much larger code and data size. Note that these 3495values will vary depending on the efficiency of the compiler and the 3496compiler options used during generation. 3497 3498 Previous Release: 3499 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3500 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3501 Current Release: 3502 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3503 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3504 3505 35062) iASL Compiler/Disassembler and Tools: 3507 3508Implemented an ANSI C version of the acpixtract utility. This version will 3509automatically extract the DSDT and all SSDTs from the input acpidump text 3510file and dump the binary output to separate files. It can also display a 3511summary of the input file including the headers for each table found and 3512will extract any single ACPI table, with any signature. (See 3513source/tools/acpixtract) 3514 3515---------------------------------------- 351610 March 2006. Summary of changes for version 20060310: 3517 35181) ACPI CA Core Subsystem: 3519 3520Tagged all external interfaces to the subsystem with the new 3521ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3522kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3523macro. The default definition is NULL. 3524 3525Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3526This allows the host to define this as necessary to simplify kernel 3527integration. The default definition is ACPI_NATIVE_UINT. 3528 3529Fixed two interpreter problems related to error processing, the deletion of 3530objects, and placing invalid pointers onto the internal operator result 3531stack. BZ 6028, 6151 (Valery Podrezov) 3532 3533Increased the reference count threshold where a warning is emitted for large 3534reference counts in order to eliminate unnecessary warnings on systems with 3535large namespaces (especially 64-bit.) Increased the value from 0x400 to 35360x800. 3537 3538Due to universal disagreement as to the meaning of the 'c' in the calloc() 3539function, the ACPI_MEM_CALLOCATE macro has been renamed to 3540ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3541ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3542ACPI_FREE. 3543 3544Code and Data Size: These are the sizes for the acpica.lib produced by the 3545Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3546driver or OSPM code. The debug version of the code includes the debug output 3547trace mechanism and has a much larger code and data size. Note that these 3548values will vary depending on the efficiency of the compiler and the 3549compiler options used during generation. 3550 3551 Previous Release: 3552 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3553 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3554 Current Release: 3555 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3556 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3557 3558 35592) iASL Compiler/Disassembler: 3560 3561Disassembler: implemented support for symbolic resource descriptor 3562references. If a CreateXxxxField operator references a fixed offset within a 3563resource descriptor, a name is assigned to the descriptor and the offset is 3564translated to the appropriate resource tag and pathname. The addition of 3565this support brings the disassembled code very close to the original ASL 3566source code and helps eliminate run-time errors when the disassembled code 3567is modified (and recompiled) in such a way as to invalidate the original 3568fixed offsets. 3569 3570Implemented support for a Descriptor Name as the last parameter to the ASL 3571Register() macro. This parameter was inadvertently left out of the ACPI 3572specification, and will be added for ACPI 3.0b. 3573 3574Fixed a problem where the use of the "_OSI" string (versus the full path 3575"\_OSI") caused an internal compiler error. ("No back ptr to op") 3576 3577Fixed a problem with the error message that occurs when an invalid string is 3578used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3579The correct message is now displayed. 3580 3581---------------------------------------- 358217 February 2006. Summary of changes for version 20060217: 3583 35841) ACPI CA Core Subsystem: 3585 3586Implemented a change to the IndexField support to match the behavior of the 3587Microsoft AML interpreter. The value written to the Index register is now a 3588byte offset, no longer an index based upon the width of the Data register. 3589This should fix IndexField problems seen on some machines where the Data 3590register is not exactly one byte wide. The ACPI specification will be 3591clarified on this point. 3592 3593Fixed a problem where several resource descriptor types could overrun the 3594internal descriptor buffer due to size miscalculation: VendorShort, 3595VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3596affect all platforms. 3597 3598Fixed a problem where individual resource descriptors were misaligned within 3599the internal buffer, causing alignment faults on IA64 platforms. 3600 3601Code and Data Size: These are the sizes for the acpica.lib produced by the 3602Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3603driver or OSPM code. The debug version of the code includes the debug output 3604trace mechanism and has a much larger code and data size. Note that these 3605values will vary depending on the efficiency of the compiler and the 3606compiler options used during generation. 3607 3608 Previous Release: 3609 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3610 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3611 Current Release: 3612 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3613 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3614 3615 36162) iASL Compiler/Disassembler: 3617 3618Implemented support for new reserved names: _WDG and _WED are Microsoft 3619extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3620defined method (Throttling Depth Limit.) 3621 3622Fixed a problem where a zero-length VendorShort or VendorLong resource 3623descriptor was incorrectly emitted as a descriptor of length one. 3624 3625---------------------------------------- 362610 February 2006. Summary of changes for version 20060210: 3627 36281) ACPI CA Core Subsystem: 3629 3630Removed a couple of extraneous ACPI_ERROR messages that appeared during 3631normal execution. These became apparent after the conversion from 3632ACPI_DEBUG_PRINT. 3633 3634Fixed a problem where the CreateField operator could hang if the BitIndex or 3635NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3636 3637Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3638failed with an exception. This also fixes a couple of related RefOf and 3639DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3640 3641Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3642AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 36435480) 3644 3645Implemented a memory cleanup at the end of the execution of each iteration 3646of an AML While() loop, preventing the accumulation of outstanding objects. 3647(Valery Podrezov, BZ 5427) 3648 3649Eliminated a chunk of duplicate code in the object resolution code. (Valery 3650Podrezov, BZ 5336) 3651 3652Fixed several warnings during the 64-bit code generation. 3653 3654The AcpiSrc source code conversion tool now inserts one line of whitespace 3655after an if() statement that is followed immediately by a comment, improving 3656readability of the Linux code. 3657 3658Code and Data Size: The current and previous library sizes for the core 3659subsystem are shown below. These are the code and data sizes for the 3660acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3661values do not include any ACPI driver or OSPM code. The debug version of the 3662code includes the debug output trace mechanism and has a much larger code 3663and data size. Note that these values will vary depending on the efficiency 3664of the compiler and the compiler options used during generation. 3665 3666 Previous Release: 3667 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3668 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3669 Current Release: 3670 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3671 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3672 3673 36742) iASL Compiler/Disassembler: 3675 3676Fixed a problem with the disassembly of a BankField operator with a complex 3677expression for the BankValue parameter. 3678 3679---------------------------------------- 368027 January 2006. Summary of changes for version 20060127: 3681 36821) ACPI CA Core Subsystem: 3683 3684Implemented support in the Resource Manager to allow unresolved namestring 3685references within resource package objects for the _PRT method. This support 3686is in addition to the previously implemented unresolved reference support 3687within the AML parser. If the interpreter slack mode is enabled, these 3688unresolved references will be passed through to the caller as a NULL package 3689entry. 3690 3691Implemented and deployed new macros and functions for error and warning 3692messages across the subsystem. These macros are simpler and generate less 3693code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3694ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3695macros remain defined to allow ACPI drivers time to migrate to the new 3696macros. 3697 3698Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3699Acquire/Release Lock OSL interfaces. 3700 3701Fixed a problem where Alias ASL operators are sometimes not correctly 3702resolved, in both the interpreter and the iASL compiler. 3703 3704Fixed several problems with the implementation of the ConcatenateResTemplate 3705ASL operator. As per the ACPI specification, zero length buffers are now 3706treated as a single EndTag. One-length buffers always cause a fatal 3707exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3708cause a fatal exception. 3709 3710Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3711interface. (With assistance from Thomas Renninger) 3712 3713Code and Data Size: The current and previous library sizes for the core 3714subsystem are shown below. These are the code and data sizes for the 3715acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3716values do not include any ACPI driver or OSPM code. The debug version of the 3717code includes the debug output trace mechanism and has a much larger code 3718and data size. Note that these values will vary depending on the efficiency 3719of the compiler and the compiler options used during generation. 3720 3721 Previous Release: 3722 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3723 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3724 Current Release: 3725 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3726 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3727 3728 37292) iASL Compiler/Disassembler: 3730 3731Fixed an internal error that was generated for any forward references to ASL 3732Alias objects. 3733 3734---------------------------------------- 373513 January 2006. Summary of changes for version 20060113: 3736 37371) ACPI CA Core Subsystem: 3738 3739Added 2006 copyright to all module headers and signons. This affects 3740virtually every file in the ACPICA core subsystem, iASL compiler, and the 3741utilities. 3742 3743Enhanced the ACPICA error reporting in order to simplify user migration to 3744the non-debug version of ACPICA. Replaced all instances of the 3745ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3746levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3747respectively. This preserves all error and warning messages in the non-debug 3748version of the ACPICA code (this has been referred to as the "debug lite" 3749option.) Over 200 cases were converted to create a total of over 380 3750error/warning messages across the ACPICA code. This increases the code and 3751data size of the default non-debug version of the code somewhat (about 13K), 3752but all error/warning reporting may be disabled if desired (and code 3753eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3754configuration option. The size of the debug version of ACPICA remains about 3755the same. 3756 3757Fixed a memory leak within the AML Debugger "Set" command. One object was 3758not properly deleted for every successful invocation of the command. 3759 3760Code and Data Size: The current and previous library sizes for the core 3761subsystem are shown below. These are the code and data sizes for the 3762acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3763values do not include any ACPI driver or OSPM code. The debug version of the 3764code includes the debug output trace mechanism and has a much larger code 3765and data size. Note that these values will vary depending on the efficiency 3766of the compiler and the compiler options used during generation. 3767 3768 Previous Release: 3769 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3770 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3771 Current Release: 3772 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3773 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3774 3775 37762) iASL Compiler/Disassembler: 3777 3778The compiler now officially supports the ACPI 3.0a specification that was 3779released on December 30, 2005. (Specification is available at www.acpi.info) 3780 3781---------------------------------------- 378216 December 2005. Summary of changes for version 20051216: 3783 37841) ACPI CA Core Subsystem: 3785 3786Implemented optional support to allow unresolved names within ASL Package 3787objects. A null object is inserted in the package when a named reference 3788cannot be located in the current namespace. Enabled via the interpreter 3789slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3790that contain such code. 3791 3792Implemented an optimization to the initialization sequence that can improve 3793boot time. During ACPI device initialization, the _STA method is now run if 3794and only if the _INI method exists. The _STA method is used to determine if 3795the device is present; An _INI can only be run if _STA returns present, but 3796it is a waste of time to run the _STA method if the _INI does not exist. 3797(Prototype and assistance from Dong Wei) 3798 3799Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3800available in the current compiler. Otherwise, the default (void *) cast is 3801used as before. 3802 3803Fixed some possible memory leaks found within the execution path of the 3804Break, Continue, If, and CreateField operators. (Valery Podrezov) 3805 3806Fixed a problem introduced in the 20051202 release where an exception is 3807generated during method execution if a control method attempts to declare 3808another method. 3809 3810Moved resource descriptor string constants that are used by both the AML 3811disassembler and AML debugger to the common utilities directory so that 3812these components are independent. 3813 3814Implemented support in the AcpiExec utility (-e switch) to globally ignore 3815exceptions during control method execution (method is not aborted.) 3816 3817Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3818generation. 3819 3820Code and Data Size: The current and previous library sizes for the core 3821subsystem are shown below. These are the code and data sizes for the 3822acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3823values do not include any ACPI driver or OSPM code. The debug version of the 3824code includes the debug output trace mechanism and has a much larger code 3825and data size. Note that these values will vary depending on the efficiency 3826of the compiler and the compiler options used during generation. 3827 3828 Previous Release: 3829 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3830 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3831 Current Release: 3832 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3833 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3834 3835 38362) iASL Compiler/Disassembler: 3837 3838Fixed a problem where a CPU stack overflow fault could occur if a recursive 3839method call was made from within a Return statement. 3840 3841---------------------------------------- 384202 December 2005. Summary of changes for version 20051202: 3843 38441) ACPI CA Core Subsystem: 3845 3846Modified the parsing of control methods to no longer create namespace 3847objects during the first pass of the parse. Objects are now created only 3848during the execute phase, at the moment the namespace creation operator is 3849encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3850should eliminate ALREADY_EXISTS exceptions seen on some machines where 3851reentrant control methods are protected by an AML mutex. The mutex will now 3852correctly block multiple threads from attempting to create the same object 3853more than once. 3854 3855Increased the number of available Owner Ids for namespace object tracking 3856from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3857some machines with a large number of ACPI tables (either static or dynamic). 3858 3859Fixed a problem with the AcpiExec utility where a fault could occur when the 3860-b switch (batch mode) is used. 3861 3862Enhanced the namespace dump routine to output the owner ID for each 3863namespace object. 3864 3865Code and Data Size: The current and previous library sizes for the core 3866subsystem are shown below. These are the code and data sizes for the 3867acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3868values do not include any ACPI driver or OSPM code. The debug version of the 3869code includes the debug output trace mechanism and has a much larger code 3870and data size. Note that these values will vary depending on the efficiency 3871of the compiler and the compiler options used during generation. 3872 3873 Previous Release: 3874 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3875 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3876 Current Release: 3877 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3878 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3879 3880 38812) iASL Compiler/Disassembler: 3882 3883Fixed a parse error during compilation of certain Switch/Case constructs. To 3884simplify the parse, the grammar now allows for multiple Default statements 3885and this error is now detected and flagged during the analysis phase. 3886 3887Disassembler: The disassembly now includes the contents of the original 3888table header within a comment at the start of the file. This includes the 3889name and version of the original ASL compiler. 3890 3891---------------------------------------- 389217 November 2005. Summary of changes for version 20051117: 3893 38941) ACPI CA Core Subsystem: 3895 3896Fixed a problem in the AML parser where the method thread count could be 3897decremented below zero if any errors occurred during the method parse phase. 3898This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3899This also fixed a related regression with the mechanism that detects and 3900corrects methods that cannot properly handle reentrancy (related to the 3901deployment of the new OwnerId mechanism.) 3902 3903Eliminated the pre-parsing of control methods (to detect errors) during 3904table load. Related to the problem above, this was causing unwind issues if 3905any errors occurred during the parse, and it seemed to be overkill. A table 3906load should not be aborted if there are problems with any single control 3907method, thus rendering this feature rather pointless. 3908 3909Fixed a problem with the new table-driven resource manager where an internal 3910buffer overflow could occur for small resource templates. 3911 3912Implemented a new external interface, AcpiGetVendorResource. This interface 3913will find and return a vendor-defined resource descriptor within a _CRS or 3914_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3915 3916Removed the length limit (200) on string objects as per the upcoming ACPI 39173.0A specification. This affects the following areas of the interpreter: 1) 3918any implicit conversion of a Buffer to a String, 2) a String object result 3919of the ASL Concatentate operator, 3) the String object result of the ASL 3920ToString operator. 3921 3922Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3923on a semaphore object would incorrectly timeout. This allows the 3924multithreading features of the AcpiExec utility to work properly under 3925Windows. 3926 3927Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3928the recently added file named "utresrc.c". 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: 76.2K Code, 12.3K Data, 88.5K 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: 163.0K Code, 67.4K Data, 230.4K Total 3944 3945 39462) iASL Compiler/Disassembler: 3947 3948Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3949specification. For the iASL compiler, this means that string literals within 3950the source ASL can be of any length. 3951 3952Enhanced the listing output to dump the AML code for resource descriptors 3953immediately after the ASL code for each descriptor, instead of in a block at 3954the end of the entire resource template. 3955 3956Enhanced the compiler debug output to dump the entire original parse tree 3957constructed during the parse phase, before any transforms are applied to the 3958tree. The transformed tree is dumped also. 3959 3960---------------------------------------- 396102 November 2005. Summary of changes for version 20051102: 3962 39631) ACPI CA Core Subsystem: 3964 3965Modified the subsystem initialization sequence to improve GPE support. The 3966GPE initialization has been split into two parts in order to defer execution 3967of the _PRW methods (Power Resources for Wake) until after the hardware is 3968fully initialized and the SCI handler is installed. This allows the _PRW 3969methods to access fields protected by the Global Lock. This will fix systems 3970where a NO_GLOBAL_LOCK exception has been seen during initialization. 3971 3972Converted the ACPI internal object disassemble and display code within the 3973AML debugger to fully table-driven operation, reducing code size and 3974increasing maintainability. 3975 3976Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3977in the 20051021 release. 3978 3979Implemented support for "local" internal ACPI object types within the 3980debugger "Object" command and the AcpiWalkNamespace external interfaces. 3981These local types include RegionFields, BankFields, IndexFields, Alias, and 3982reference objects. 3983 3984Moved common AML resource handling code into a new file, "utresrc.c". This 3985code is shared by both the Resource Manager and the AML Debugger. 3986 3987Code and Data Size: The current and previous library sizes for the core 3988subsystem are shown below. These are the code and data sizes for the 3989acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3990values do not include any ACPI driver or OSPM code. The debug version of the 3991code includes the debug output trace mechanism and has a much larger code 3992and data size. Note that these values will vary depending on the efficiency 3993of the compiler and the compiler options used during generation. 3994 3995 Previous Release: 3996 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3997 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3998 Current Release: 3999 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 4000 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 4001 4002 40032) iASL Compiler/Disassembler: 4004 4005Fixed a problem with very large initializer lists (more than 4000 elements) 4006for both Buffer and Package objects where the parse stack could overflow. 4007 4008Enhanced the pre-compile source code scan for non-ASCII characters to ignore 4009characters within comment fields. The scan is now always performed and is no 4010longer optional, detecting invalid characters within a source file 4011immediately rather than during the parse phase or later. 4012 4013Enhanced the ASL grammar definition to force early reductions on all list- 4014style grammar elements so that the overall parse stack usage is greatly 4015reduced. This should improve performance and reduce the possibility of parse 4016stack overflow. 4017 4018Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 4019with the addition of a %expected statement, the compiler generates from 4020source with no warnings. 4021 4022Fixed a possible segment fault in the disassembler if the input filename 4023does not contain a "dot" extension (Thomas Renninger). 4024 4025---------------------------------------- 402621 October 2005. Summary of changes for version 20051021: 4027 40281) ACPI CA Core Subsystem: 4029 4030Implemented support for the EM64T and other x86-64 processors. This 4031essentially entails recognizing that these processors support non-aligned 4032memory transfers. Previously, all 64-bit processors were assumed to lack 4033hardware support for non-aligned transfers. 4034 4035Completed conversion of the Resource Manager to nearly full table-driven 4036operation. Specifically, the resource conversion code (convert AML to 4037internal format and the reverse) and the debug code to dump internal 4038resource descriptors are fully table-driven, reducing code and data size and 4039improving maintainability. 4040 4041The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 4042on 64-bit processors instead of a fixed 32-bit word. (With assistance from 4043Alexey Starikovskiy) 4044 4045Implemented support within the resource conversion code for the Type- 4046Specific byte within the various ACPI 3.0 *WordSpace macros. 4047 4048Fixed some issues within the resource conversion code for the type-specific 4049flags for both Memory and I/O address resource descriptors. For Memory, 4050implemented support for the MTP and TTP flags. For I/O, split the TRS and 4051TTP flags into two separate fields. 4052 4053Code and Data Size: The current and previous library sizes for the core 4054subsystem are shown below. These are the code and data sizes for the 4055acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4056values do not include any ACPI driver or OSPM code. The debug version of the 4057code includes the debug output trace mechanism and has a much larger code 4058and data size. Note that these values will vary depending on the efficiency 4059of the compiler and the compiler options used during generation. 4060 4061 Previous Release: 4062 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4063 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4064 Current Release: 4065 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 4066 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 4067 4068 4069 40702) iASL Compiler/Disassembler: 4071 4072Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4073corresponding ResourceSource string was not also present in a resource 4074descriptor declaration. This restriction caused problems with existing 4075AML/ASL code that includes the Index byte without the string. When such AML 4076was disassembled, it could not be compiled without modification. Further, 4077the modified code created a resource template with a different size than the 4078original, breaking code that used fixed offsets into the resource template 4079buffer. 4080 4081Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4082byte. This byte is now emitted if present so that the exact AML can be 4083reproduced when the disassembled code is recompiled. 4084 4085Improved comments and text alignment for the resource descriptor code 4086emitted by the disassembler. 4087 4088Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4089Register() resource descriptor. 4090 4091---------------------------------------- 409230 September 2005. Summary of changes for version 20050930: 4093 40941) ACPI CA Core Subsystem: 4095 4096Completed a major overhaul of the Resource Manager code - specifically, 4097optimizations in the area of the AML/internal resource conversion code. The 4098code has been optimized to simplify and eliminate duplicated code, CPU stack 4099use has been decreased by optimizing function parameters and local 4100variables, and naming conventions across the manager have been standardized 4101for clarity and ease of maintenance (this includes function, parameter, 4102variable, and struct/typedef names.) The update may force changes in some 4103driver code, depending on how resources are handled by the host OS. 4104 4105All Resource Manager dispatch and information tables have been moved to a 4106single location for clarity and ease of maintenance. One new file was 4107created, named "rsinfo.c". 4108 4109The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4110guarantee that the argument is not evaluated twice, making them less prone 4111to macro side-effects. However, since there exists the possibility of 4112additional stack use if a particular compiler cannot optimize them (such as 4113in the debug generation case), the original macros are optionally available. 4114Note that some invocations of the return_VALUE macro may now cause size 4115mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4116eliminate these. (From Randy Dunlap) 4117 4118Implemented a new mechanism to enable debug tracing for individual control 4119methods. A new external interface, AcpiDebugTrace, is provided to enable 4120this mechanism. The intent is to allow the host OS to easily enable and 4121disable tracing for problematic control methods. This interface can be 4122easily exposed to a user or debugger interface if desired. See the file 4123psxface.c for details. 4124 4125AcpiUtCallocate will now return a valid pointer if a length of zero is 4126specified - a length of one is used and a warning is issued. This matches 4127the behavior of AcpiUtAllocate. 4128 4129Code and Data Size: The current and previous library sizes for the core 4130subsystem are shown below. These are the code and data sizes for the 4131acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4132values do not include any ACPI driver or OSPM code. The debug version of the 4133code includes the debug output trace mechanism and has a much larger code 4134and data size. Note that these values will vary depending on the efficiency 4135of the compiler and the compiler options used during generation. 4136 4137 Previous Release: 4138 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4139 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4140 Current Release: 4141 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4142 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4143 4144 41452) iASL Compiler/Disassembler: 4146 4147A remark is issued if the effective compile-time length of a package or 4148buffer is zero. Previously, this was a warning. 4149 4150---------------------------------------- 415116 September 2005. Summary of changes for version 20050916: 4152 41531) ACPI CA Core Subsystem: 4154 4155Fixed a problem within the Resource Manager where support for the Generic 4156Register descriptor was not fully implemented. This descriptor is now fully 4157recognized, parsed, disassembled, and displayed. 4158 4159Completely restructured the Resource Manager code to utilize table-driven 4160dispatch and lookup, eliminating many of the large switch() statements. This 4161reduces overall subsystem code size and code complexity. Affects the 4162resource parsing and construction, disassembly, and debug dump output. 4163 4164Cleaned up and restructured the debug dump output for all resource 4165descriptors. Improved readability of the output and reduced code size. 4166 4167Fixed a problem where changes to internal data structures caused the 4168optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4169 4170Code and Data Size: The current and previous library sizes for the core 4171subsystem are shown below. These are the code and data sizes for the 4172acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4173values do not include any ACPI driver or OSPM code. The debug version of the 4174code includes the debug output trace mechanism and has a much larger code 4175and data size. Note that these values will vary depending on the efficiency 4176of the compiler and the compiler options used during generation. 4177 4178 Previous Release: 4179 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4180 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4181 Current Release: 4182 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4183 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4184 4185 41862) iASL Compiler/Disassembler: 4187 4188Updated the disassembler to automatically insert an EndDependentFn() macro 4189into the ASL stream if this macro is missing in the original AML code, 4190simplifying compilation of the resulting ASL module. 4191 4192Fixed a problem in the disassembler where a disassembled ResourceSource 4193string (within a large resource descriptor) was not surrounded by quotes and 4194not followed by a comma, causing errors when the resulting ASL module was 4195compiled. Also, escape sequences within a ResourceSource string are now 4196handled correctly (especially "\\") 4197 4198---------------------------------------- 419902 September 2005. Summary of changes for version 20050902: 4200 42011) ACPI CA Core Subsystem: 4202 4203Fixed a problem with the internal Owner ID allocation and deallocation 4204mechanisms for control method execution and recursive method invocation. 4205This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4206messages seen on some systems. Recursive method invocation depth is 4207currently limited to 255. (Alexey Starikovskiy) 4208 4209Completely eliminated all vestiges of support for the "module-level 4210executable code" until this support is fully implemented and debugged. This 4211should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4212some systems that invoke this support. 4213 4214Fixed a problem within the resource manager code where the transaction flags 4215for a 64-bit address descriptor were handled incorrectly in the type- 4216specific flag byte. 4217 4218Consolidated duplicate code within the address descriptor resource manager 4219code, reducing overall subsystem code size. 4220 4221Fixed a fault when using the AML debugger "disassemble" command to 4222disassemble individual control methods. 4223 4224Removed references to the "release_current" directory within the Unix 4225release package. 4226 4227Code and Data Size: The current and previous core subsystem library sizes 4228are shown below. These are the code and data sizes for the acpica.lib 4229produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4230include any ACPI driver or OSPM code. The debug version of the code includes 4231the debug output trace mechanism and has a much larger code and data size. 4232Note that these values will vary depending on the efficiency of the compiler 4233and the compiler options used during generation. 4234 4235 Previous Release: 4236 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4237 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4238 Current Release: 4239 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4240 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4241 4242 42432) iASL Compiler/Disassembler: 4244 4245Implemented an error check for illegal duplicate values in the interrupt and 4246dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4247Interrupt(). 4248 4249Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4250too many values in the interrupt list (16 max) and invalid values in the 4251list (range 0 - 15) 4252 4253The maximum length string literal within an ASL file is now restricted to 4254200 characters as per the ACPI specification. 4255 4256Fixed a fault when using the -ln option (generate namespace listing). 4257 4258Implemented an error check to determine if a DescriptorName within a 4259resource descriptor has already been used within the current scope. 4260 4261---------------------------------------- 426215 August 2005. Summary of changes for version 20050815: 4263 42641) ACPI CA Core Subsystem: 4265 4266Implemented a full bytewise compare to determine if a table load request is 4267attempting to load a duplicate table. The compare is performed if the table 4268signatures and table lengths match. This will allow different tables with 4269the same OEM Table ID and revision to be loaded - probably against the ACPI 4270specification, but discovered in the field nonetheless. 4271 4272Added the changes.txt logfile to each of the zipped release packages. 4273 4274Code and Data Size: Current and previous core subsystem library sizes are 4275shown below. These are the code and data sizes for the acpica.lib produced 4276by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4277any ACPI driver or OSPM code. The debug version of the code includes the 4278debug output trace mechanism and has a much larger code and data size. Note 4279that these values will vary depending on the efficiency of the compiler and 4280the compiler options used during generation. 4281 4282 Previous Release: 4283 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4284 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4285 Current Release: 4286 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4287 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4288 4289 42902) iASL Compiler/Disassembler: 4291 4292Fixed a problem where incorrect AML code could be generated for Package 4293objects if optimization is disabled (via the -oa switch). 4294 4295Fixed a problem with where incorrect AML code is generated for variable- 4296length packages when the package length is not specified and the number of 4297initializer values is greater than 255. 4298 4299 4300---------------------------------------- 430129 July 2005. Summary of changes for version 20050729: 4302 43031) ACPI CA Core Subsystem: 4304 4305Implemented support to ignore an attempt to install/load a particular ACPI 4306table more than once. Apparently there exists BIOS code that repeatedly 4307attempts to load the same SSDT upon certain events. With assistance from 4308Venkatesh Pallipadi. 4309 4310Restructured the main interface to the AML parser in order to correctly 4311handle all exceptional conditions. This will prevent leakage of the OwnerId 4312resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4313machines. With assistance from Alexey Starikovskiy. 4314 4315Support for "module level code" has been disabled in this version due to a 4316number of issues that have appeared on various machines. The support can be 4317enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4318compilation. When the issues are fully resolved, the code will be enabled by 4319default again. 4320 4321Modified the internal functions for debug print support to define the 4322FunctionName parameter as a (const char *) for compatibility with compiler 4323built-in macros such as __FUNCTION__, etc. 4324 4325Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4326 4327Implemented support to display an object count summary for the AML Debugger 4328commands Object and Methods. 4329 4330Code and Data Size: Current and previous core subsystem library sizes are 4331shown below. These are the code and data sizes for the acpica.lib produced 4332by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4333any ACPI driver or OSPM code. The debug version of the code includes the 4334debug output trace mechanism and has a much larger code and data size. Note 4335that these values will vary depending on the efficiency of the compiler and 4336the compiler options used during generation. 4337 4338 Previous Release: 4339 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4340 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4341 Current Release: 4342 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4343 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4344 4345 43462) iASL Compiler/Disassembler: 4347 4348Fixed a regression that appeared in the 20050708 version of the compiler 4349where an error message was inadvertently emitted for invocations of the _OSI 4350reserved control method. 4351 4352---------------------------------------- 435308 July 2005. Summary of changes for version 20050708: 4354 43551) ACPI CA Core Subsystem: 4356 4357The use of the CPU stack in the debug version of the subsystem has been 4358considerably reduced. Previously, a debug structure was declared in every 4359function that used the debug macros. This structure has been removed in 4360favor of declaring the individual elements as parameters to the debug 4361functions. This reduces the cumulative stack use during nested execution of 4362ACPI function calls at the cost of a small increase in the code size of the 4363debug version of the subsystem. With assistance from Alexey Starikovskiy and 4364Len Brown. 4365 4366Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4367headers to define a macro that will return the current function name at 4368runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4369the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4370compiler-dependent header, the function name is saved on the CPU stack (one 4371pointer per function.) This mechanism is used because apparently there 4372exists no standard ANSI-C defined macro that that returns the function name. 4373 4374Redesigned and reimplemented the "Owner ID" mechanism used to track 4375namespace objects created/deleted by ACPI tables and control method 4376execution. A bitmap is now used to allocate and free the IDs, thus solving 4377the wraparound problem present in the previous implementation. The size of 4378the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4379Starikovskiy). 4380 4381Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4382flag definitions within the headers for the predefined ACPI tables. These 4383have been replaced by UINT8_BIT in order to increase the code portability of 4384the subsystem. If the use of UINT8 remains a problem, we may be forced to 4385eliminate bitfields entirely because of a lack of portability. 4386 4387Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4388is a frequently used function and this improvement increases the performance 4389of the entire subsystem (Alexey Starikovskiy). 4390 4391Fixed several possible memory leaks and the inverse - premature object 4392deletion (Alexey Starikovskiy). 4393 4394Code and Data Size: Current and previous core subsystem library sizes are 4395shown below. These are the code and data sizes for the acpica.lib produced 4396by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4397any ACPI driver or OSPM code. The debug version of the code includes the 4398debug output trace mechanism and has a much larger code and data size. Note 4399that these values will vary depending on the efficiency of the compiler and 4400the compiler options used during generation. 4401 4402 Previous Release: 4403 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4404 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4405 Current Release: 4406 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4407 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4408 4409---------------------------------------- 441024 June 2005. Summary of changes for version 20050624: 4411 44121) ACPI CA Core Subsystem: 4413 4414Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4415the host-defined cache object. This allows the OSL implementation to define 4416and type this object in any manner desired, simplifying the OSL 4417implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4418Linux, and should be defined in the OS-specific header file for other 4419operating systems as required. 4420 4421Changed the interface to AcpiOsAcquireObject to directly return the 4422requested object as the function return (instead of ACPI_STATUS.) This 4423change was made for performance reasons, since this is the purpose of the 4424interface in the first place. AcpiOsAcquireObject is now similar to the 4425AcpiOsAllocate interface. 4426 4427Implemented a new AML debugger command named Businfo. This command displays 4428information about all devices that have an associate _PRT object. The _ADR, 4429_HID, _UID, and _CID are displayed for these devices. 4430 4431Modified the initialization sequence in AcpiInitializeSubsystem to call the 4432OSL interface AcpiOslInitialize first, before any local initialization. This 4433change was required because the global initialization now calls OSL 4434interfaces. 4435 4436Enhanced the Dump command to display the entire contents of Package objects 4437(including all sub-objects and their values.) 4438 4439Restructured the code base to split some files because of size and/or 4440because the code logically belonged in a separate file. New files are listed 4441below. All makefiles and project files included in the ACPI CA release have 4442been updated. 4443 utilities/utcache.c /* Local cache interfaces */ 4444 utilities/utmutex.c /* Local mutex support */ 4445 utilities/utstate.c /* State object support */ 4446 interpreter/parser/psloop.c /* Main AML parse loop */ 4447 4448Code and Data Size: Current and previous core subsystem library sizes are 4449shown below. These are the code and data sizes for the acpica.lib produced 4450by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4451any ACPI driver or OSPM code. The debug version of the code includes the 4452debug output trace mechanism and has a much larger code and data size. Note 4453that these values will vary depending on the efficiency of the compiler and 4454the compiler options used during generation. 4455 4456 Previous Release: 4457 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4458 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4459 Current Release: 4460 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4461 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4462 4463 44642) iASL Compiler/Disassembler: 4465 4466Fixed a regression introduced in version 20050513 where the use of a Package 4467object within a Case() statement caused a compile time exception. The 4468original behavior has been restored (a Match() operator is emitted.) 4469 4470---------------------------------------- 447117 June 2005. Summary of changes for version 20050617: 4472 44731) ACPI CA Core Subsystem: 4474 4475Moved the object cache operations into the OS interface layer (OSL) to allow 4476the host OS to handle these operations if desired (for example, the Linux 4477OSL will invoke the slab allocator). This support is optional; the compile 4478time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4479code in the ACPI CA core. The new OSL interfaces are shown below. See 4480utalloc.c for an example implementation, and acpiosxf.h for the exact 4481interface definitions. With assistance from Alexey Starikovskiy. 4482 AcpiOsCreateCache 4483 AcpiOsDeleteCache 4484 AcpiOsPurgeCache 4485 AcpiOsAcquireObject 4486 AcpiOsReleaseObject 4487 4488Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4489and restore a flags parameter. This fits better with many OS lock models. 4490Note: the current execution state (interrupt handler or not) is no longer 4491passed to these interfaces. If necessary, the OSL must determine this state 4492by itself, a simple and fast operation. With assistance from Alexey 4493Starikovskiy. 4494 4495Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4496present if the revision of the RSDP was 2 or greater. According to the ACPI 4497specification, the XSDT is optional in all cases, and the table manager 4498therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4499Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4500only the RSDT. 4501 4502Fixed an interpreter problem with the Mid() operator in the case of an input 4503string where the resulting output string is of zero length. It now correctly 4504returns a valid, null terminated string object instead of a string object 4505with a null pointer. 4506 4507Fixed a problem with the control method argument handling to allow a store 4508to an Arg object that already contains an object of type Device. The Device 4509object is now correctly overwritten. Previously, an error was returned. 4510 4511 4512Enhanced the debugger Find command to emit object values in addition to the 4513found object pathnames. The output format is the same as the dump namespace 4514command. 4515 4516Enhanced the debugger Set command. It now has the ability to set the value 4517of any Named integer object in the namespace (Previously, only method locals 4518and args could be set.) 4519 4520Code and Data Size: Current and previous core subsystem library sizes are 4521shown below. These are the code and data sizes for the acpica.lib produced 4522by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4523any ACPI driver or OSPM code. The debug version of the code includes the 4524debug output trace mechanism and has a much larger code and data size. Note 4525that these values will vary depending on the efficiency of the compiler and 4526the compiler options used during generation. 4527 4528 Previous Release: 4529 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4530 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4531 Current Release: 4532 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4533 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4534 4535 45362) iASL Compiler/Disassembler: 4537 4538Fixed a regression in the disassembler where if/else/while constructs were 4539output incorrectly. This problem was introduced in the previous release 4540(20050526). This problem also affected the single-step disassembly in the 4541debugger. 4542 4543Fixed a problem where compiling the reserved _OSI method would randomly (but 4544rarely) produce compile errors. 4545 4546Enhanced the disassembler to emit compilable code in the face of incorrect 4547AML resource descriptors. If the optional ResourceSourceIndex is present, 4548but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4549disassembly. Otherwise, the resulting code cannot be compiled without 4550errors. 4551 4552---------------------------------------- 455326 May 2005. Summary of changes for version 20050526: 4554 45551) ACPI CA Core Subsystem: 4556 4557Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4558the module level (not within a control method.) These opcodes are executed 4559exactly once at the time the table is loaded. This type of code was legal up 4560until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4561order to provide backwards compatibility with earlier BIOS implementations. 4562This eliminates the "Encountered executable code at module level" warning 4563that was previously generated upon detection of such code. 4564 4565Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4566inadvertently be generated during the lookup of namespace objects in the 4567second pass parse of ACPI tables and control methods. It appears that this 4568problem could occur during the resolution of forward references to namespace 4569objects. 4570 4571Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4572corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4573allows the deadlock detection debug code to be compiled out in the normal 4574case, improving mutex performance (and overall subsystem performance) 4575considerably. 4576 4577Implemented a handful of miscellaneous fixes for possible memory leaks on 4578error conditions and error handling control paths. These fixes were 4579suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4580 4581Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4582to prevent a fault in this error case. 4583 4584Code and Data Size: Current and previous core subsystem library sizes are 4585shown below. These are the code and data sizes for the acpica.lib produced 4586by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4587any ACPI driver or OSPM code. The debug version of the code includes the 4588debug output trace mechanism and has a much larger code and data size. Note 4589that these values will vary depending on the efficiency of the compiler and 4590the compiler options used during generation. 4591 4592 Previous Release: 4593 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4594 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4595 Current Release: 4596 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4597 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4598 4599 46002) iASL Compiler/Disassembler: 4601 4602Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4603the module level (not within a control method.) These operators will be 4604executed once at the time the table is loaded. This type of code was legal 4605up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4606compiler in order to provide backwards compatibility with earlier BIOS ASL 4607code. 4608 4609The ACPI integer width (specified via the table revision ID or the -r 4610override, 32 or 64 bits) is now used internally during compile-time constant 4611folding to ensure that constants are truncated to 32 bits if necessary. 4612Previously, the revision ID value was only emitted in the AML table header. 4613 4614An error message is now generated for the Mutex and Method operators if the 4615SyncLevel parameter is outside the legal range of 0 through 15. 4616 4617Fixed a problem with the Method operator ParameterTypes list handling (ACPI 46183.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4619The actual underlying implementation of method argument typechecking is 4620still under development, however. 4621 4622---------------------------------------- 462313 May 2005. Summary of changes for version 20050513: 4624 46251) ACPI CA Core Subsystem: 4626 4627Implemented support for PCI Express root bridges -- added support for device 4628PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4629 4630The interpreter now automatically truncates incoming 64-bit constants to 32 4631bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4632also affects the iASL compiler constant folding. (Note: as per below, the 4633iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4634 4635Fixed a problem where string and buffer objects with "static" pointers 4636(pointers to initialization data within an ACPI table) were not handled 4637consistently. The internal object copy operation now always copies the data 4638to a newly allocated buffer, regardless of whether the source object is 4639static or not. 4640 4641Fixed a problem with the FromBCD operator where an implicit result 4642conversion was improperly performed while storing the result to the target 4643operand. Since this is an "explicit conversion" operator, the implicit 4644conversion should never be performed on the output. 4645 4646Fixed a problem with the CopyObject operator where a copy to an existing 4647named object did not always completely overwrite the existing object stored 4648at name. Specifically, a buffer-to-buffer copy did not delete the existing 4649buffer. 4650 4651Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4652structs for consistency. 4653 4654Code and Data Size: Current and previous core subsystem library sizes are 4655shown below. These are the code and data sizes for the acpica.lib produced 4656by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4657any ACPI driver or OSPM code. The debug version of the code includes the 4658debug output trace mechanism and has a much larger code and data size. Note 4659that these values will vary depending on the efficiency of the compiler and 4660the compiler options used during generation. 4661 4662 Previous Release: 4663 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4664 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4665 Current Release: (Same sizes) 4666 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4667 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4668 4669 46702) iASL Compiler/Disassembler: 4671 4672The compiler now emits a warning if an attempt is made to generate a 64-bit 4673integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4674is truncated to 32 bits. 4675 4676Fixed a problem with large package objects: if the static length of the 4677package is greater than 255, the "variable length package" opcode is 4678emitted. Previously, this caused an error. This requires an update to the 4679ACPI spec, since it currently (incorrectly) states that packages larger than 4680255 elements are not allowed. 4681 4682The disassembler now correctly handles variable length packages and packages 4683larger than 255 elements. 4684 4685---------------------------------------- 468608 April 2005. Summary of changes for version 20050408: 4687 46881) ACPI CA Core Subsystem: 4689 4690Fixed three cases in the interpreter where an "index" argument to an ASL 4691function was still (internally) 32 bits instead of the required 64 bits. 4692This was the Index argument to the Index, Mid, and Match operators. 4693 4694The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4695not a POSIX-defined function and not present in most kernel-level C 4696libraries. All references to the C library strupr function have been removed 4697from the headers. 4698 4699Completed the deployment of static functions/prototypes. All prototypes with 4700the static attribute have been moved from the headers to the owning C file. 4701 4702Implemented an extract option (-e) for the AcpiBin utility (AML binary 4703utility). This option allows the utility to extract individual ACPI tables 4704from the output of AcpiDmp. It provides the same functionality of the 4705acpixtract.pl perl script without the worry of setting the correct perl 4706options. AcpiBin runs on Windows and has not yet been generated/validated in 4707the Linux/Unix environment (but should be soon). 4708 4709Updated and fixed the table dump option for AcpiBin (-d). This option 4710converts a single ACPI table to a hex/ascii file, similar to the output of 4711AcpiDmp. 4712 4713Code and Data Size: Current and previous core subsystem library sizes are 4714shown below. These are the code and data sizes for the acpica.lib produced 4715by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4716any ACPI driver or OSPM code. The debug version of the code includes the 4717debug output trace mechanism and has a much larger code and data size. Note 4718that these values will vary depending on the efficiency of the compiler and 4719the compiler options used during generation. 4720 4721 Previous Release: 4722 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4723 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4724 Current Release: 4725 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4726 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4727 4728 47292) iASL Compiler/Disassembler: 4730 4731Disassembler fix: Added a check to ensure that the table length found in the 4732ACPI table header within the input file is not longer than the actual input 4733file size. This indicates some kind of file or table corruption. 4734 4735---------------------------------------- 473629 March 2005. Summary of changes for version 20050329: 4737 47381) ACPI CA Core Subsystem: 4739 4740An error is now generated if an attempt is made to create a Buffer Field of 4741length zero (A CreateField with a length operand of zero.) 4742 4743The interpreter now issues a warning whenever executable code at the module 4744level is detected during ACPI table load. This will give some idea of the 4745prevalence of this type of code. 4746 4747Implemented support for references to named objects (other than control 4748methods) within package objects. 4749 4750Enhanced package object output for the debug object. Package objects are now 4751completely dumped, showing all elements. 4752 4753Enhanced miscellaneous object output for the debug object. Any object can 4754now be written to the debug object (for example, a device object can be 4755written, and the type of the object will be displayed.) 4756 4757The "static" qualifier has been added to all local functions across both the 4758core subsystem and the iASL compiler. 4759 4760The number of "long" lines (> 80 chars) within the source has been 4761significantly reduced, by about 1/3. 4762 4763Cleaned up all header files to ensure that all CA/iASL functions are 4764prototyped (even static functions) and the formatting is consistent. 4765 4766Two new header files have been added, acopcode.h and acnames.h. 4767 4768Removed several obsolete functions that were no longer used. 4769 4770Code and Data Size: Current and previous core subsystem library sizes are 4771shown below. These are the code and data sizes for the acpica.lib produced 4772by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4773any ACPI driver or OSPM code. The debug version of the code includes the 4774debug output trace mechanism and has a much larger code and data size. Note 4775that these values will vary depending on the efficiency of the compiler and 4776the compiler options used during generation. 4777 4778 Previous Release: 4779 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4780 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4781 Current Release: 4782 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4783 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4784 4785 4786 47872) iASL Compiler/Disassembler: 4788 4789Fixed a problem with the resource descriptor generation/support. For the 4790ResourceSourceIndex and the ResourceSource fields, both must be present, or 4791both must be not present - can't have one without the other. 4792 4793The compiler now returns non-zero from the main procedure if any errors have 4794occurred during the compilation. 4795 4796 4797---------------------------------------- 479809 March 2005. Summary of changes for version 20050309: 4799 48001) ACPI CA Core Subsystem: 4801 4802The string-to-buffer implicit conversion code has been modified again after 4803a change to the ACPI specification. In order to match the behavior of the 4804other major ACPI implementation, the target buffer is no longer truncated if 4805the source string is smaller than an existing target buffer. This change 4806requires an update to the ACPI spec, and should eliminate the recent 4807AE_AML_BUFFER_LIMIT issues. 4808 4809The "implicit return" support was rewritten to a new algorithm that solves 4810the general case. Rather than attempt to determine when a method is about to 4811exit, the result of every ASL operator is saved momentarily until the very 4812next ASL operator is executed. Therefore, no matter how the method exits, 4813there will always be a saved implicit return value. This feature is only 4814enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4815AE_AML_NO_RETURN_VALUE errors when enabled. 4816 4817Implemented implicit conversion support for the predicate (operand) of the 4818If, Else, and While operators. String and Buffer arguments are automatically 4819converted to Integers. 4820 4821Changed the string-to-integer conversion behavior to match the new ACPI 4822errata: "If no integer object exists, a new integer is created. The ASCII 4823string is interpreted as a hexadecimal constant. Each string character is 4824interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4825with the first character as the most significant digit, and ending with the 4826first non-hexadecimal character or end-of-string." This means that the first 4827non-hex character terminates the conversion and this is the code that was 4828changed. 4829 4830Fixed a problem where the ObjectType operator would fail (fault) when used 4831on an Index of a Package which pointed to a null package element. The 4832operator now properly returns zero (Uninitialized) in this case. 4833 4834Fixed a problem where the While operator used excessive memory by not 4835properly popping the result stack during execution. There was no memory leak 4836after execution, however. (Code provided by Valery Podrezov.) 4837 4838Fixed a problem where references to control methods within Package objects 4839caused the method to be invoked, instead of producing a reference object 4840pointing to the method. 4841 4842Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4843improve performance and reduce code size. (Code provided by Alexey 4844Starikovskiy.) 4845 4846Code and Data Size: Current and previous core subsystem library sizes are 4847shown below. These are the code and data sizes for the acpica.lib produced 4848by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4849any ACPI driver or OSPM code. The debug version of the code includes the 4850debug output trace mechanism and has a much larger code and data size. Note 4851that these values will vary depending on the efficiency of the compiler and 4852the compiler options used during generation. 4853 4854 Previous Release: 4855 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4856 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4857 Current Release: 4858 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4859 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4860 4861 48622) iASL Compiler/Disassembler: 4863 4864Fixed a problem with the Return operator with no arguments. Since the AML 4865grammar for the byte encoding requires an operand for the Return opcode, the 4866compiler now emits a Return(Zero) for this case. An ACPI specification 4867update has been written for this case. 4868 4869For tables other than the DSDT, namepath optimization is automatically 4870disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4871compiler has no knowledge of where, and thus cannot optimize namepaths. 4872 4873Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4874inadvertently omitted from the ACPI specification, and will require an 4875update to the spec. 4876 4877The source file scan for ASCII characters is now optional (-a). This change 4878was made because some vendors place non-ascii characters within comments. 4879However, the scan is simply a brute-force byte compare to ensure all 4880characters in the file are in the range 0x00 to 0x7F. 4881 4882Fixed a problem with the CondRefOf operator where the compiler was 4883inappropriately checking for the existence of the target. Since the point of 4884the operator is to check for the existence of the target at run-time, the 4885compiler no longer checks for the target existence. 4886 4887Fixed a problem where errors generated from the internal AML interpreter 4888during constant folding were not handled properly, causing a fault. 4889 4890Fixed a problem with overly aggressive range checking for the Stall 4891operator. The valid range (max 255) is now only checked if the operand is of 4892type Integer. All other operand types cannot be statically checked. 4893 4894Fixed a problem where control method references within the RefOf, DeRefOf, 4895and ObjectType operators were not treated properly. They are now treated as 4896actual references, not method invocations. 4897 4898Fixed and enhanced the "list namespace" option (-ln). This option was broken 4899a number of releases ago. 4900 4901Improved error handling for the Field, IndexField, and BankField operators. 4902The compiler now cleanly reports and recovers from errors in the field 4903component (FieldUnit) list. 4904 4905Fixed a disassembler problem where the optional ResourceDescriptor fields 4906TRS and TTP were not always handled correctly. 4907 4908Disassembler - Comments in output now use "//" instead of "/*" 4909 4910---------------------------------------- 491128 February 2005. Summary of changes for version 20050228: 4912 49131) ACPI CA Core Subsystem: 4914 4915Fixed a problem where the result of an Index() operator (an object 4916reference) must increment the reference count on the target object for the 4917life of the object reference. 4918 4919Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4920Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4921resource descriptors. 4922 4923Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4924Space Descriptor" string, indicating interpreter support for the descriptors 4925above. 4926 4927Implemented header support for the new ACPI 3.0 FADT flag bits. 4928 4929Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4930status/enable registers. 4931 4932Updated header support for the MADT processor local Apic struct and MADT 4933platform interrupt source struct for new ACPI 3.0 fields. 4934 4935Implemented header support for the SRAT and SLIT ACPI tables. 4936 4937Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4938at runtime. 4939 4940Code and Data Size: Current and previous core subsystem library sizes are 4941shown below. These are the code and data sizes for the acpica.lib produced 4942by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4943any ACPI driver or OSPM code. The debug version of the code includes the 4944debug output trace mechanism and has a much larger code and data size. Note 4945that these values will vary depending on the efficiency of the compiler and 4946the compiler options used during generation. 4947 4948 Previous Release: 4949 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4950 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4951 Current Release: 4952 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4953 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4954 4955 49562) iASL Compiler/Disassembler: 4957 4958Fixed a problem with the internal 64-bit String-to-integer conversion with 4959strings less than two characters long. 4960 4961Fixed a problem with constant folding where the result of the Index() 4962operator can not be considered a constant. This means that Index() cannot be 4963a type3 opcode and this will require an update to the ACPI specification. 4964 4965Disassembler: Implemented support for the TTP, MTP, and TRS resource 4966descriptor fields. These fields were inadvertently ignored and not output in 4967the disassembly of the resource descriptor. 4968 4969 4970 ---------------------------------------- 497111 February 2005. Summary of changes for version 20050211: 4972 49731) ACPI CA Core Subsystem: 4974 4975Implemented ACPI 3.0 support for implicit conversion within the Match() 4976operator. MatchObjects can now be of type integer, buffer, or string instead 4977of just type integer. Package elements are implicitly converted to the type 4978of the MatchObject. This change aligns the behavior of Match() with the 4979behavior of the other logical operators (LLess(), etc.) It also requires an 4980errata change to the ACPI specification as this support was intended for 4981ACPI 3.0, but was inadvertently omitted. 4982 4983Fixed a problem with the internal implicit "to buffer" conversion. Strings 4984that are converted to buffers will cause buffer truncation if the string is 4985smaller than the target buffer. Integers that are converted to buffers will 4986not cause buffer truncation, only zero extension (both as per the ACPI 4987spec.) The problem was introduced when code was added to truncate the 4988buffer, but this should not be performed in all cases, only the string case. 4989 4990Fixed a problem with the Buffer and Package operators where the interpreter 4991would get confused if two such operators were used as operands to an ASL 4992operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4993stack was not being popped after the execution of these operators, resulting 4994in an AE_NO_RETURN_VALUE exception. 4995 4996Fixed a problem with constructs of the form Store(Index(...),...). The 4997reference object returned from Index was inadvertently resolved to an actual 4998value. This problem was introduced in version 20050114 when the behavior of 4999Store() was modified to restrict the object types that can be used as the 5000source operand (to match the ACPI specification.) 5001 5002Reduced excessive stack use within the AcpiGetObjectInfo procedure. 5003 5004Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 5005 5006Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 5007 5008Code and Data Size: Current and previous core subsystem library sizes are 5009shown below. These are the code and data sizes for the acpica.lib produced 5010by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5011any ACPI driver or OSPM code. The debug version of the code includes the 5012debug output trace mechanism and has a much larger code and data size. Note 5013that these values will vary depending on the efficiency of the compiler and 5014the compiler options used during generation. 5015 5016 Previous Release: 5017 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5018 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5019 Current Release: 5020 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 5021 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 5022 5023 50242) iASL Compiler/Disassembler: 5025 5026Fixed a code generation problem in the constant folding optimization code 5027where incorrect code was generated if a constant was reduced to a buffer 5028object (i.e., a reduced type 5 opcode.) 5029 5030Fixed a typechecking problem for the ToBuffer operator. Caused by an 5031incorrect return type in the internal opcode information table. 5032 5033---------------------------------------- 503425 January 2005. Summary of changes for version 20050125: 5035 50361) ACPI CA Core Subsystem: 5037 5038Fixed a recently introduced problem with the Global Lock where the 5039underlying semaphore was not created. This problem was introduced in 5040version 20050114, and caused an AE_AML_NO_OPERAND exception during an 5041Acquire() operation on _GL. 5042 5043The local object cache is now optional, and is disabled by default. Both 5044AcpiExec and the iASL compiler enable the cache because they run in user 5045mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 5046to enable the local cache. 5047 5048Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 5049optional "implicit return" support where an error was returned if no return 5050object was expected, but one was implicitly returned. AE_OK is now returned 5051in this case and the implicitly returned object is deleted. 5052AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 5053methods such as _STA and _INI where the return type is known up front. 5054 5055Fixed a few issues with the internal convert-to-integer code. It now returns 5056an error if an attempt is made to convert a null string, a string of only 5057blanks/tabs, or a zero-length buffer. This affects both implicit conversion 5058and explicit conversion via the ToInteger() operator. 5059 5060The internal debug code in AcpiUtAcquireMutex has been commented out. It is 5061not needed for normal operation and should increase the performance of the 5062entire subsystem. The code remains in case it is needed for debug purposes 5063again. 5064 5065The AcpiExec source and makefile are included in the Unix/Linux package for 5066the first time. 5067 5068Code and Data Size: Current and previous core subsystem library sizes are 5069shown below. These are the code and data sizes for the acpica.lib produced 5070by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5071any ACPI driver or OSPM code. The debug version of the code includes the 5072debug output trace mechanism and has a much larger code and data size. Note 5073that these values will vary depending on the efficiency of the compiler and 5074the compiler options used during generation. 5075 5076 Previous Release: 5077 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5078 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5079 Current Release: 5080 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5081 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5082 50832) iASL Compiler/Disassembler: 5084 5085Switch/Case support: A warning is now issued if the type of the Switch value 5086cannot be determined at compile time. For example, Switch(Arg0) will 5087generate the warning, and the type is assumed to be an integer. As per the 5088ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5089warning. 5090 5091Switch/Case support: Implemented support for buffer and string objects as 5092the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5093buffers and strings. 5094 5095Switch/Case support: The emitted code for the LEqual() comparisons now uses 5096the switch value as the first operand, not the second. The case value is now 5097the second operand, and this allows the case value to be implicitly 5098converted to the type of the switch value, not the other way around. 5099 5100Switch/Case support: Temporary variables are now emitted immediately within 5101the control method, not at the global level. This means that there are now 510236 temps available per-method, not 36 temps per-module as was the case with 5103the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5104 5105---------------------------------------- 510614 January 2005. Summary of changes for version 20050114: 5107 5108Added 2005 copyright to all module headers. This affects every module in 5109the core subsystem, iASL compiler, and the utilities. 5110 51111) ACPI CA Core Subsystem: 5112 5113Fixed an issue with the String-to-Buffer conversion code where the string 5114null terminator was not included in the buffer after conversion, but there 5115is existing ASL that assumes the string null terminator is included. This is 5116the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5117introduced in the previous version when the code was updated to correctly 5118set the converted buffer size as per the ACPI specification. The ACPI spec 5119is ambiguous and will be updated to specify that the null terminator must be 5120included in the converted buffer. This also affects the ToBuffer() ASL 5121operator. 5122 5123Fixed a problem with the Mid() ASL/AML operator where it did not work 5124correctly on Buffer objects. Newly created sub-buffers were not being marked 5125as initialized. 5126 5127 5128Fixed a problem in AcpiTbFindTable where incorrect string compares were 5129performed on the OemId and OemTableId table header fields. These fields are 5130not null terminated, so strncmp is now used instead of strcmp. 5131 5132Implemented a restriction on the Store() ASL/AML operator to align the 5133behavior with the ACPI specification. Previously, any object could be used 5134as the source operand. Now, the only objects that may be used are Integers, 5135Buffers, Strings, Packages, Object References, and DDB Handles. If 5136necessary, the original behavior can be restored by enabling the 5137EnableInterpreterSlack flag. 5138 5139Enhanced the optional "implicit return" support to allow an implicit return 5140value from methods that are invoked externally via the AcpiEvaluateObject 5141interface. This enables implicit returns from the _STA and _INI methods, 5142for example. 5143 5144Changed the Revision() ASL/AML operator to return the current version of the 5145AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5146the supported ACPI version (This is the function of the _REV method). 5147 5148Updated the _REV predefined method to return the currently supported version 5149of ACPI, now 3. 5150 5151Implemented batch mode option for the AcpiExec utility (-b). 5152 5153Code and Data Size: Current and previous core subsystem library sizes are 5154shown below. These are the code and data sizes for the acpica.lib produced 5155by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5156any ACPI driver or OSPM code. The debug version of the code includes the 5157debug output trace mechanism and has a much larger code and data size. Note 5158that these values will vary depending on the efficiency of the compiler and 5159the compiler options used during generation. 5160 5161 Previous Release: 5162 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5163 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5164 Current Release: 5165 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5166 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5167 5168---------------------------------------- 516910 December 2004. Summary of changes for version 20041210: 5170 5171ACPI 3.0 support is nearing completion in both the iASL compiler and the 5172ACPI CA core subsystem. 5173 51741) ACPI CA Core Subsystem: 5175 5176Fixed a problem in the ToDecimalString operator where the resulting string 5177length was incorrectly calculated. The length is now calculated exactly, 5178eliminating incorrect AE_STRING_LIMIT exceptions. 5179 5180Fixed a problem in the ToHexString operator to allow a maximum 200 character 5181string to be produced. 5182 5183Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5184routine where the length of the resulting buffer was not truncated to the 5185new size (if the target buffer already existed). 5186 5187Code and Data Size: Current and previous core subsystem library sizes are 5188shown below. These are the code and data sizes for the acpica.lib produced 5189by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5190any ACPI driver or OSPM code. The debug version of the code includes the 5191debug output trace mechanism and has a much larger code and data size. Note 5192that these values will vary depending on the efficiency of the compiler and 5193the compiler options used during generation. 5194 5195 Previous Release: 5196 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5197 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5198 Current Release: 5199 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5200 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5201 5202 52032) iASL Compiler/Disassembler: 5204 5205Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5206ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5207Includes support in the disassembler. 5208 5209Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5210AccessSize. 5211 5212Fixed a problem where the _HE resource name for the Interrupt macro was 5213referencing bit 0 instead of bit 1. 5214 5215Implemented check for maximum 255 interrupts in the Interrupt macro. 5216 5217Fixed a problem with the predefined resource descriptor names where 5218incorrect AML code was generated if the offset within the resource buffer 5219was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5220but did not update the surrounding package lengths. 5221 5222Changes to the Dma macro: All channels within the channel list must be in 5223the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5224optional (default is BusMaster). 5225 5226Implemented check for maximum 7 data bytes for the VendorShort macro. 5227 5228The ReadWrite parameter is now optional for the Memory32 and similar macros. 5229 5230---------------------------------------- 523103 December 2004. Summary of changes for version 20041203: 5232 52331) ACPI CA Core Subsystem: 5234 5235The low-level field insertion/extraction code (exfldio) has been completely 5236rewritten to eliminate unnecessary complexity, bugs, and boundary 5237conditions. 5238 5239Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5240operators where the input operand could be inadvertently deleted if no 5241conversion was necessary (e.g., if the input to ToInteger was an Integer 5242object.) 5243 5244Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5245exception code was returned if the resulting string would be > 200 chars. 5246AE_STRING_LIMIT is now returned. 5247 5248Fixed a problem with the Concatenate operator where AE_OK was always 5249returned, even if the operation failed. 5250 5251Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5252semaphores to be allocated. 5253 5254Code and Data Size: Current and previous core subsystem library sizes are 5255shown below. These are the code and data sizes for the acpica.lib produced 5256by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5257any ACPI driver or OSPM code. The debug version of the code includes the 5258debug output trace mechanism and has a much larger code and data size. Note 5259that these values will vary depending on the efficiency of the compiler and 5260the compiler options used during generation. 5261 5262 Previous Release: 5263 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5264 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5265 Current Release: 5266 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5267 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5268 5269 52702) iASL Compiler/Disassembler: 5271 5272Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5273recently introduced in 20041119. 5274 5275Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5276byte was inadvertently set to zero. 5277 5278---------------------------------------- 527919 November 2004. Summary of changes for version 20041119: 5280 52811) ACPI CA Core Subsystem: 5282 5283Fixed a problem in the internal ConvertToInteger routine where new integers 5284were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5285buffers and strings to integers. 5286 5287Implemented support to store a value to an Index() on a String object. This 5288is an ACPI 2.0 feature that had not yet been implemented. 5289 5290Implemented new behavior for storing objects to individual package elements 5291(via the Index() operator). The previous behavior was to invoke the implicit 5292conversion rules if an object was already present at the index. The new 5293behavior is to simply delete any existing object and directly store the new 5294object. Although the ACPI specification seems unclear on this subject, other 5295ACPI implementations behave in this manner. (This is the root of the 5296AE_BAD_HEX_CONSTANT issue.) 5297 5298Modified the RSDP memory scan mechanism to support the extended checksum for 5299ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5300RSDP signature is found with a valid checksum. 5301 5302Code and Data Size: Current and previous core subsystem library sizes are 5303shown below. These are the code and data sizes for the acpica.lib produced 5304by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5305any ACPI driver or OSPM code. The debug version of the code includes the 5306debug output trace mechanism and has a much larger code and data size. Note 5307that these values will vary depending on the efficiency of the compiler and 5308the compiler options used during generation. 5309 5310 Previous Release: 5311 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5312 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5313 Current Release: 5314 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5315 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5316 5317 53182) iASL Compiler/Disassembler: 5319 5320Fixed a missing semicolon in the aslcompiler.y file. 5321 5322---------------------------------------- 532305 November 2004. Summary of changes for version 20041105: 5324 53251) ACPI CA Core Subsystem: 5326 5327Implemented support for FADT revision 2. This was an interim table (between 5328ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5329 5330Implemented optional support to allow uninitialized LocalX and ArgX 5331variables in a control method. The variables are initialized to an Integer 5332object with a value of zero. This support is enabled by setting the 5333AcpiGbl_EnableInterpreterSlack flag to TRUE. 5334 5335Implemented support for Integer objects for the SizeOf operator. Either 4 5336or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5337depending on the parent table revision). 5338 5339Fixed a problem in the implementation of the SizeOf and ObjectType operators 5340where the operand was resolved to a value too early, causing incorrect 5341return values for some objects. 5342 5343Fixed some possible memory leaks during exceptional conditions. 5344 5345Code and Data Size: Current and previous core subsystem library sizes are 5346shown below. These are the code and data sizes for the acpica.lib produced 5347by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5348any ACPI driver or OSPM code. The debug version of the code includes the 5349debug output trace mechanism and has a much larger code and data size. Note 5350that these values will vary depending on the efficiency of the compiler and 5351the compiler options used during generation. 5352 5353 Previous Release: 5354 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5355 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5356 Current Release: 5357 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5358 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5359 5360 53612) iASL Compiler/Disassembler: 5362 5363Implemented support for all ACPI 3.0 reserved names and methods. 5364 5365Implemented all ACPI 3.0 grammar elements in the front-end, including 5366support for semicolons. 5367 5368Implemented the ACPI 3.0 Function() and ToUUID() macros 5369 5370Fixed a problem in the disassembler where a Scope() operator would not be 5371emitted properly if the target of the scope was in another table. 5372 5373---------------------------------------- 537415 October 2004. Summary of changes for version 20041015: 5375 5376Note: ACPI CA is currently undergoing an in-depth and complete formal 5377evaluation to test/verify the following areas. Other suggestions are 5378welcome. This will result in an increase in the frequency of releases and 5379the number of bug fixes in the next few months. 5380 - Functional tests for all ASL/AML operators 5381 - All implicit/explicit type conversions 5382 - Bit fields and operation regions 5383 - 64-bit math support and 32-bit-only "truncated" math support 5384 - Exceptional conditions, both compiler and interpreter 5385 - Dynamic object deletion and memory leaks 5386 - ACPI 3.0 support when implemented 5387 - External interfaces to the ACPI subsystem 5388 5389 53901) ACPI CA Core Subsystem: 5391 5392Fixed two alignment issues on 64-bit platforms - within debug statements in 5393AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5394field within the non-aligned ACPI generic address structure. 5395 5396Fixed a problem in the Increment and Decrement operators where incorrect 5397operand resolution could result in the inadvertent modification of the 5398original integer when the integer is passed into another method as an 5399argument and the arg is then incremented/decremented. 5400 5401Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5402BCD number were truncated during conversion. 5403 5404Fixed a problem in the ToDecimal operator where the length of the resulting 5405string could be set incorrectly too long if the input operand was a Buffer 5406object. 5407 5408Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5409within a buffer would prematurely terminate a compare between buffer 5410objects. 5411 5412Added a check for string overflow (>200 characters as per the ACPI 5413specification) during the Concatenate operator with two string operands. 5414 5415Code and Data Size: Current and previous core subsystem library sizes are 5416shown below. These are the code and data sizes for the acpica.lib produced 5417by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5418any ACPI driver or OSPM code. The debug version of the code includes the 5419debug output trace mechanism and has a much larger code and data size. Note 5420that these values will vary depending on the efficiency of the compiler and 5421the compiler options used during generation. 5422 5423 Previous Release: 5424 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5425 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5426 Current Release: 5427 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5428 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5429 5430 5431 54322) iASL Compiler/Disassembler: 5433 5434Allow the use of the ObjectType operator on uninitialized Locals and Args 5435(returns 0 as per the ACPI specification). 5436 5437Fixed a problem where the compiler would fault if there was a syntax error 5438in the FieldName of all of the various CreateXXXField operators. 5439 5440Disallow the use of lower case letters within the EISAID macro, as per the 5441ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5442U is an uppercase letter and N is a hex digit. 5443 5444 5445---------------------------------------- 544606 October 2004. Summary of changes for version 20041006: 5447 54481) ACPI CA Core Subsystem: 5449 5450Implemented support for the ACPI 3.0 Timer operator. This ASL function 5451implements a 64-bit timer with 100 nanosecond granularity. 5452 5453Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5454implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5455the timer with the best clock available. Also, it keeps the core subsystem 5456out of the clock handling business, since the host OS (usually) performs 5457this function. 5458 5459Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5460functions use a 64-bit address which is part of the packed ACPI Generic 5461Address Structure. Since the structure is non-aligned, the alignment macros 5462are now used to extract the address to a local variable before use. 5463 5464Fixed a problem where the ToInteger operator assumed all input strings were 5465hexadecimal. The operator now handles both decimal strings and hex strings 5466(prefixed with "0x"). 5467 5468Fixed a problem where the string length in the string object created as a 5469result of the internal ConvertToString procedure could be incorrect. This 5470potentially affected all implicit conversions and also the ToDecimalString 5471and ToHexString operators. 5472 5473Fixed two problems in the ToString operator. If the length parameter was 5474zero, an incorrect string object was created and the value of the input 5475length parameter was inadvertently changed from zero to Ones. 5476 5477Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5478resource macro was ignored. 5479 5480Simplified the interfaces to the internal division functions, reducing code 5481size and complexity. 5482 5483Code and Data Size: Current and previous core subsystem library sizes are 5484shown below. These are the code and data sizes for the acpica.lib produced 5485by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5486any ACPI driver or OSPM code. The debug version of the code includes the 5487debug output trace mechanism and has a much larger code and data size. Note 5488that these values will vary depending on the efficiency of the compiler and 5489the compiler options used during generation. 5490 5491 Previous Release: 5492 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5493 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5494 Current Release: 5495 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5496 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5497 5498 54992) iASL Compiler/Disassembler: 5500 5501Implemented support for the ACPI 3.0 Timer operator. 5502 5503Fixed a problem where the Default() operator was inadvertently ignored in a 5504Switch/Case block. This was a problem in the translation of the Switch 5505statement to If...Else pairs. 5506 5507Added support to allow a standalone Return operator, with no parentheses (or 5508operands). 5509 5510Fixed a problem with code generation for the ElseIf operator where the 5511translated Else...If parse tree was improperly constructed leading to the 5512loss of some code. 5513 5514---------------------------------------- 551522 September 2004. Summary of changes for version 20040922: 5516 55171) ACPI CA Core Subsystem: 5518 5519Fixed a problem with the implementation of the LNot() operator where "Ones" 5520was not returned for the TRUE case. Changed the code to return Ones instead 5521of (!Arg) which was usually 1. This change affects iASL constant folding for 5522this operator also. 5523 5524Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5525initialized properly -- Now zero the entire buffer in this case where the 5526buffer already exists. 5527 5528Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5529Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5530related code considerably. This will require changes/updates to all OS 5531interface layers (OSLs.) 5532 5533Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5534a system exception handler to be installed. This handler is invoked upon any 5535run-time exception that occurs during control method execution. 5536 5537Added support for the DSDT in AcpiTbFindTable. This allows the 5538DataTableRegion() operator to access the local copy of the DSDT. 5539 5540Code and Data Size: Current and previous core subsystem library sizes are 5541shown below. These are the code and data sizes for the acpica.lib produced 5542by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5543any ACPI driver or OSPM code. The debug version of the code includes the 5544debug output trace mechanism and has a much larger code and data size. Note 5545that these values will vary depending on the efficiency of the compiler and 5546the compiler options used during generation. 5547 5548 Previous Release: 5549 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5550 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5551 Current Release: 5552 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5553 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5554 5555 55562) iASL Compiler/Disassembler: 5557 5558Fixed a problem with constant folding and the LNot operator. LNot was 5559returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5560could result in the generation of an incorrect folded/reduced constant. 5561 5562End-Of-File is now allowed within a "//"-style comment. A parse error no 5563longer occurs if such a comment is at the very end of the input ASL source 5564file. 5565 5566Implemented the "-r" option to override the Revision in the table header. 5567The initial use of this option will be to simplify the evaluation of the AML 5568interpreter by allowing a single ASL source module to be compiled for either 556932-bit or 64-bit integers. 5570 5571 5572---------------------------------------- 557327 August 2004. Summary of changes for version 20040827: 5574 55751) ACPI CA Core Subsystem: 5576 5577- Implemented support for implicit object conversion in the non-numeric 5578logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5579LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5580the second operand is implicitly converted on the fly to match the type of 5581the first operand. For example: 5582 5583 LEqual (Source1, Source2) 5584 5585Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5586The data type of Source1 dictates the required type of Source2. Source2 is 5587implicitly converted if necessary to match the type of Source1. 5588 5589- Updated and corrected the behavior of the string conversion support. The 5590rules concerning conversion of buffers to strings (according to the ACPI 5591specification) are as follows: 5592 5593ToDecimalString - explicit byte-wise conversion of buffer to string of 5594decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5595conversion of buffer to string of hex values (0-FF) separated by commas. 5596ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5597copy with no transform except NULL terminated. Any other implicit buffer-to- 5598string conversion - byte-wise conversion of buffer to string of hex values 5599(0-FF) separated by spaces. 5600 5601- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5602 5603- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5604one byte too short in the case of a node in the root scope. This could 5605cause a fault during debug output. 5606 5607- Code and Data Size: Current and previous core subsystem library sizes are 5608shown below. These are the code and data sizes for the acpica.lib produced 5609by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5610any ACPI driver or OSPM code. The debug version of the code includes the 5611debug output trace mechanism and has a much larger code and data size. Note 5612that these values will vary depending on the efficiency of the compiler and 5613the compiler options used during generation. 5614 5615 Previous Release: 5616 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5617 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5618 Current Release: 5619 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5620 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5621 5622 56232) iASL Compiler/Disassembler: 5624 5625- Fixed a Linux generation error. 5626 5627 5628---------------------------------------- 562916 August 2004. Summary of changes for version 20040816: 5630 56311) ACPI CA Core Subsystem: 5632 5633Designed and implemented support within the AML interpreter for the so- 5634called "implicit return". This support returns the result of the last ASL 5635operation within a control method, in the absence of an explicit Return() 5636operator. A few machines depend on this behavior, even though it is not 5637explicitly supported by the ASL language. It is optional support that can 5638be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5639 5640Removed support for the PCI_Config address space from the internal low level 5641hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5642support was not used internally, and would not work correctly anyway because 5643the PCI bus number and segment number were not supported. There are 5644separate interfaces for PCI configuration space access because of the unique 5645interface. 5646 5647Code and Data Size: Current and previous core subsystem library sizes are 5648shown below. These are the code and data sizes for the acpica.lib produced 5649by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5650any ACPI driver or OSPM code. The debug version of the code includes the 5651debug output trace mechanism and has a much larger code and data size. Note 5652that these values will vary depending on the efficiency of the compiler and 5653the compiler options used during generation. 5654 5655 Previous Release: 5656 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5657 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5658 Current Release: 5659 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5660 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5661 5662 56632) iASL Compiler/Disassembler: 5664 5665Fixed a problem where constants in ASL expressions at the root level (not 5666within a control method) could be inadvertently truncated during code 5667generation. This problem was introduced in the 20040715 release. 5668 5669 5670---------------------------------------- 567115 July 2004. Summary of changes for version 20040715: 5672 56731) ACPI CA Core Subsystem: 5674 5675Restructured the internal HW GPE interfaces to pass/track the current state 5676of interrupts (enabled/disabled) in order to avoid possible deadlock and 5677increase flexibility of the interfaces. 5678 5679Implemented a "lexicographical compare" for String and Buffer objects within 5680the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5681as per further clarification to the ACPI specification. Behavior is similar 5682to C library "strcmp". 5683 5684Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5685external function. In the 32-bit non-debug case, the stack use has been 5686reduced from 168 bytes to 32 bytes. 5687 5688Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5689whose purpose is to allow the AML interpreter to forgive certain bad AML 5690constructs. Default setting is FALSE. 5691 5692Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5693support code. If enabled, it allows field access to go beyond the end of a 5694region definition if the field is within the region length rounded up to the 5695next access width boundary (a common coding error.) 5696 5697Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5698ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5699symbols are lowercased by the latest version of the AcpiSrc tool. 5700 5701The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5702rename "Register" to simply "Reg" to prevent certain compilers from 5703complaining. 5704 5705Code and Data Size: Current and previous core subsystem library sizes are 5706shown below. These are the code and data sizes for the acpica.lib produced 5707by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5708any ACPI driver or OSPM code. The debug version of the code includes the 5709debug output trace mechanism and has a much larger code and data size. Note 5710that these values will vary depending on the efficiency of the compiler and 5711the compiler options used during generation. 5712 5713 Previous Release: 5714 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5715 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5716 Current Release: 5717 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5718 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5719 5720 57212) iASL Compiler/Disassembler: 5722 5723Implemented full support for Package objects within the Case() operator. 5724Note: The Break() operator is currently not supported within Case blocks 5725(TermLists) as there is some question about backward compatibility with ACPI 57261.0 interpreters. 5727 5728 5729Fixed a problem where complex terms were not supported properly within the 5730Switch() operator. 5731 5732Eliminated extraneous warning for compiler-emitted reserved names of the 5733form "_T_x". (Used in Switch/Case operators.) 5734 5735Eliminated optimization messages for "_T_x" objects and small constants 5736within the DefinitionBlock operator. 5737 5738 5739---------------------------------------- 574015 June 2004. Summary of changes for version 20040615: 5741 57421) ACPI CA Core Subsystem: 5743 5744Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5745following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5746LLessEqual. 5747 5748All directory names in the entire source package are lower case, as they 5749were in earlier releases. 5750 5751Implemented "Disassemble" command in the AML debugger that will disassemble 5752a single control method. 5753 5754Code and Data Size: Current and previous core subsystem library sizes are 5755shown below. These are the code and data sizes for the acpica.lib produced 5756by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5757any ACPI driver or OSPM code. The debug version of the code includes the 5758debug output trace mechanism and has a much larger code and data size. Note 5759that these values will vary depending on the efficiency of the compiler and 5760the compiler options used during generation. 5761 5762 Previous Release: 5763 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5764 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5765 5766 Current Release: 5767 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5768 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5769 5770 57712) iASL Compiler/Disassembler: 5772 5773Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5774following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5775LLessEqual. 5776 5777All directory names in the entire source package are lower case, as they 5778were in earlier releases. 5779 5780Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5781not found. 5782 5783Fixed an issue with the Windows version of the compiler where later versions 5784of Windows place the FADT in the registry under the name "FADT" and not 5785"FACP" as earlier versions did. This applies when using the -g or - 5786d<nofilename> options. The compiler now looks for both strings as 5787necessary. 5788 5789Fixed a problem with compiler namepath optimization where a namepath within 5790the Scope() operator could not be optimized if the namepath was a subpath of 5791the current scope path. 5792 5793---------------------------------------- 579427 May 2004. Summary of changes for version 20040527: 5795 57961) ACPI CA Core Subsystem: 5797 5798Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5799support in the RSDP scan code. The original code improperly scanned for the 5800EBDA by simply scanning from memory location 0 to 0x400. The correct method 5801is to first obtain the EBDA pointer from within the BIOS data area, then 5802scan 1K of memory starting at the EBDA pointer. There appear to be few if 5803any machines that place the RSDP in the EBDA, however. 5804 5805Integrated a fix for a possible fault during evaluation of BufferField 5806arguments. Obsolete code that was causing the problem was removed. 5807 5808Found and fixed a problem in the Field Support Code where data could be 5809corrupted on a bit field read that starts on an aligned boundary but does 5810not end on an aligned boundary. Merged the read/write "datum length" 5811calculation code into a common procedure. 5812 5813Rolled in a couple of changes to the FreeBSD-specific header. 5814 5815 5816Code and Data Size: Current and previous core subsystem library sizes are 5817shown below. These are the code and data sizes for the acpica.lib produced 5818by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5819any ACPI driver or OSPM code. The debug version of the code includes the 5820debug output trace mechanism and has a much larger code and data size. Note 5821that these values will vary depending on the efficiency of the compiler and 5822the compiler options used during generation. 5823 5824 Previous Release: 5825 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5826 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5827 Current 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 58322) iASL Compiler/Disassembler: 5833 5834Fixed a generation warning produced by some overly-verbose compilers for a 583564-bit constant. 5836 5837---------------------------------------- 583814 May 2004. Summary of changes for version 20040514: 5839 58401) ACPI CA Core Subsystem: 5841 5842Fixed a problem where hardware GPE enable bits sometimes not set properly 5843during and after GPE method execution. Result of 04/27 changes. 5844 5845Removed extra "clear all GPEs" when sleeping/waking. 5846 5847Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5848AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5849the new AcpiEv* calls as appropriate. 5850 5851ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5852now "Microsoft Windows NT" for maximum compatibility. However this can be 5853changed by modifying the acconfig.h file. 5854 5855Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5856traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5857 5858Run _INI methods on ThermalZone objects. This is against the ACPI 5859specification, but there is apparently ASL code in the field that has these 5860_INI methods, and apparently "other" AML interpreters execute them. 5861 5862Performed a full 16/32/64 bit lint that resulted in some small changes. 5863 5864Added a sleep simulation command to the AML debugger to test sleep code. 5865 5866Code and Data Size: Current and previous core subsystem library sizes are 5867shown below. These are the code and data sizes for the acpica.lib produced 5868by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5869any ACPI driver or OSPM code. The debug version of the code includes the 5870debug output trace mechanism and has a much larger code and data size. Note 5871that these values will vary depending on the efficiency of the compiler and 5872the compiler options used during generation. 5873 5874 Previous Release: 5875 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5876 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5877 Current Release: 5878 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5879 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5880 5881---------------------------------------- 588227 April 2004. Summary of changes for version 20040427: 5883 58841) ACPI CA Core Subsystem: 5885 5886Completed a major overhaul of the GPE handling within ACPI CA. There are 5887now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5888The only GPEs allowed to be combination wake/run are for button-style 5889devices such as a control-method power button, control-method sleep button, 5890or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5891referenced by any _PRW methods are marked for "runtime" and hardware 5892enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5893(and disabled at runtime). However, at sleep time, only those GPEs that 5894have been specifically enabled for wake via the AcpiEnableGpe interface will 5895actually be hardware enabled. 5896 5897A new external interface has been added, AcpiSetGpeType(), that is meant to 5898be used by device drivers to force a GPE to a particular type. It will be 5899especially useful for the drivers for the button devices mentioned above. 5900 5901Completed restructuring of the ACPI CA initialization sequence so that 5902default operation region handlers are installed before GPEs are initialized 5903and the _PRW methods are executed. This will prevent errors when the _PRW 5904methods attempt to access system memory or I/O space. 5905 5906GPE enable/disable no longer reads the GPE enable register. We now keep the 5907enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5908thus no longer depend on the hardware to maintain these bits. 5909 5910Always clear the wake status and fixed/GPE status bits before sleep, even 5911for state S5. 5912 5913Improved the AML debugger output for displaying the GPE blocks and their 5914current status. 5915 5916Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5917x = 0,1,2,3,4. 5918 5919Fixed a problem where the physical address was incorrectly calculated when 5920the Load() operator was used to directly load from an Operation Region (vs. 5921loading from a Field object.) Also added check for minimum table length for 5922this case. 5923 5924Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5925mutex release. 5926 5927Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5928consistency with the other fields returned. 5929 5930Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5931structure for each GPE in the system, so the size of this structure is 5932important. 5933 5934CPU stack requirement reduction: Cleaned up the method execution and object 5935evaluation paths so that now a parameter structure is passed, instead of 5936copying the various method parameters over and over again. 5937 5938In evregion.c: Correctly exit and reenter the interpreter region if and 5939only if dispatching an operation region request to a user-installed handler. 5940Do not exit/reenter when dispatching to a default handler (e.g., default 5941system memory or I/O handlers) 5942 5943 5944Notes for updating drivers for the new GPE support. The following changes 5945must be made to ACPI-related device drivers that are attached to one or more 5946GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5947 59481) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5949explicitly call AcpiEnableGpe. 59502) There is a new interface called AcpiSetGpeType. This should be called 5951before enabling the GPE. Also, this interface will automatically disable 5952the GPE if it is currently enabled. 59533) AcpiEnableGpe no longer supports a GPE type flag. 5954 5955Specific drivers that must be changed: 59561) EC driver: 5957 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5958AeGpeHandler, NULL); 5959 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5960 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5961 59622) Button Drivers (Power, Lid, Sleep): 5963Run _PRW method under parent device 5964If _PRW exists: /* This is a control-method button */ 5965 Extract GPE number and possibly GpeDevice 5966 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5967 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5968 5969For all other devices that have _PRWs, we automatically set the GPE type to 5970ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5971must be done on a selective basis, usually requiring some kind of user app 5972to allow the user to pick the wake devices. 5973 5974 5975Code and Data Size: Current and previous core subsystem library sizes are 5976shown below. These are the code and data sizes for the acpica.lib produced 5977by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5978any ACPI driver or OSPM code. The debug version of the code includes the 5979debug output trace mechanism and has a much larger code and data size. Note 5980that these values will vary depending on the efficiency of the compiler and 5981the compiler options used during generation. 5982 5983 Previous Release: 5984 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5985 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5986 Current Release: 5987 5988 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5989 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5990 5991 5992 5993---------------------------------------- 599402 April 2004. Summary of changes for version 20040402: 5995 59961) ACPI CA Core Subsystem: 5997 5998Fixed an interpreter problem where an indirect store through an ArgX 5999parameter was incorrectly applying the "implicit conversion rules" during 6000the store. From the ACPI specification: "If the target is a method local or 6001argument (LocalX or ArgX), no conversion is performed and the result is 6002stored directly to the target". The new behavior is to disable implicit 6003conversion during ALL stores to an ArgX. 6004 6005Changed the behavior of the _PRW method scan to ignore any and all errors 6006returned by a given _PRW. This prevents the scan from aborting from the 6007failure of any single _PRW. 6008 6009Moved the runtime configuration parameters from the global init procedure to 6010static variables in acglobal.h. This will allow the host to override the 6011default values easily. 6012 6013Code and Data Size: Current and previous core subsystem library sizes are 6014shown below. These are the code and data sizes for the acpica.lib produced 6015by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6016any ACPI driver or OSPM code. The debug version of the code includes the 6017debug output trace mechanism and has a much larger code and data size. Note 6018that these values will vary depending on the efficiency of the compiler and 6019the compiler options used during generation. 6020 6021 Previous Release: 6022 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6023 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6024 Current Release: 6025 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 6026 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 6027 6028 60292) iASL Compiler/Disassembler: 6030 6031iASL now fully disassembles SSDTs. However, External() statements are not 6032generated automatically for unresolved symbols at this time. This is a 6033planned feature for future implementation. 6034 6035Fixed a scoping problem in the disassembler that occurs when the type of the 6036target of a Scope() operator is overridden. This problem caused an 6037incorrectly nested internal namespace to be constructed. 6038 6039Any warnings or errors that are emitted during disassembly are now commented 6040out automatically so that the resulting file can be recompiled without any 6041hand editing. 6042 6043---------------------------------------- 604426 March 2004. Summary of changes for version 20040326: 6045 60461) ACPI CA Core Subsystem: 6047 6048Implemented support for "wake" GPEs via interaction between GPEs and the 6049_PRW methods. Every GPE that is pointed to by one or more _PRWs is 6050identified as a WAKE GPE and by default will no longer be enabled at 6051runtime. Previously, we were blindly enabling all GPEs with a corresponding 6052_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 6053believe this has been the cause of thousands of "spurious" GPEs on some 6054systems. 6055 6056This new GPE behavior is can be reverted to the original behavior (enable 6057ALL GPEs at runtime) via a runtime flag. 6058 6059Fixed a problem where aliased control methods could not access objects 6060properly. The proper scope within the namespace was not initialized 6061(transferred to the target of the aliased method) before executing the 6062target method. 6063 6064Fixed a potential race condition on internal object deletion on the return 6065object in AcpiEvaluateObject. 6066 6067Integrated a fix for resource descriptors where both _MEM and _MTP were 6068being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 6069wide, 0x0F instead of 0x03.) 6070 6071Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6072fault in some cases. 6073 6074Updated Notify() values for debug statements in evmisc.c 6075 6076Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 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 6088 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6089 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6090 Current Release: 6091 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6092 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6093 6094---------------------------------------- 609511 March 2004. Summary of changes for version 20040311: 6096 60971) ACPI CA Core Subsystem: 6098 6099Fixed a problem where errors occurring during the parse phase of control 6100method execution did not abort cleanly. For example, objects created and 6101installed in the namespace were not deleted. This caused all subsequent 6102invocations of the method to return the AE_ALREADY_EXISTS exception. 6103 6104Implemented a mechanism to force a control method to "Serialized" execution 6105if the method attempts to create namespace objects. (The root of the 6106AE_ALREADY_EXISTS problem.) 6107 6108Implemented support for the predefined _OSI "internal" control method. 6109Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6110"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6111This feature will allow "other" operating systems to execute the fully 6112tested, "Windows" code path through the ASL code 6113 6114Global Lock Support: Now allows multiple acquires and releases with any 6115internal thread. Removed concept of "owning thread" for this special mutex. 6116 6117Fixed two functions that were inappropriately declaring large objects on the 6118CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6119method execution considerably. 6120 6121Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6122S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6123 6124Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6125defined on the machine. 6126 6127Implemented two runtime options: One to force all control method execution 6128to "Serialized" to mimic Windows behavior, another to disable _OSI support 6129if it causes problems on a given machine. 6130 6131Code and Data Size: Current and previous core subsystem library sizes are 6132shown below. These are the code and data sizes for the acpica.lib produced 6133by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6134any ACPI driver or OSPM code. The debug version of the code includes the 6135debug output trace mechanism and has a much larger code and data size. Note 6136that these values will vary depending on the efficiency of the compiler and 6137the compiler options used during generation. 6138 6139 Previous Release: 6140 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6141 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6142 Current Release: 6143 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6144 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6145 61462) iASL Compiler/Disassembler: 6147 6148Fixed an array size problem for FreeBSD that would cause the compiler to 6149fault. 6150 6151---------------------------------------- 615220 February 2004. Summary of changes for version 20040220: 6153 6154 61551) ACPI CA Core Subsystem: 6156 6157Implemented execution of _SxD methods for Device objects in the 6158GetObjectInfo interface. 6159 6160Fixed calls to _SST method to pass the correct arguments. 6161 6162Added a call to _SST on wake to restore to "working" state. 6163 6164Check for End-Of-Buffer failure case in the WalkResources interface. 6165 6166Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6167structures to the beginning of the file. 6168 6169After wake, clear GPE status register(s) before enabling GPEs. 6170 6171After wake, clear/enable power button. (Perhaps we should clear/enable all 6172fixed events upon wake.) 6173 6174Fixed a couple of possible memory leaks in the Namespace manager. 6175 6176Integrated latest acnetbsd.h file. 6177 6178---------------------------------------- 617911 February 2004. Summary of changes for version 20040211: 6180 6181 61821) ACPI CA Core Subsystem: 6183 6184Completed investigation and implementation of the call-by-reference 6185mechanism for control method arguments. 6186 6187Fixed a problem where a store of an object into an indexed package could 6188fail if the store occurs within a different method than the method that 6189created the package. 6190 6191Fixed a problem where the ToDecimal operator could return incorrect results. 6192 6193Fixed a problem where the CopyObject operator could fail on some of the more 6194obscure objects (e.g., Reference objects.) 6195 6196Improved the output of the Debug object to display buffer, package, and 6197index objects. 6198 6199Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6200the expected result. 6201 6202Added permanent ACPI_REPORT_ERROR macros for all instances of the 6203ACPI_AML_INTERNAL exception. 6204 6205Integrated latest version of acfreebsd.h 6206 6207---------------------------------------- 620816 January 2004. Summary of changes for version 20040116: 6209 6210The purpose of this release is primarily to update the copyright years in 6211each module, thus causing a huge number of diffs. There are a few small 6212functional changes, however. 6213 62141) ACPI CA Core Subsystem: 6215 6216Improved error messages when there is a problem finding one or more of the 6217required base ACPI tables 6218 6219Reintroduced the definition of APIC_HEADER in actbl.h 6220 6221Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6222 6223Removed extraneous reference to NewObj in dsmthdat.c 6224 62252) iASL compiler 6226 6227Fixed a problem introduced in December that disabled the correct disassembly 6228of Resource Templates 6229 6230 6231---------------------------------------- 623203 December 2003. Summary of changes for version 20031203: 6233 62341) ACPI CA Core Subsystem: 6235 6236Changed the initialization of Operation Regions during subsystem 6237init to perform two entire walks of the ACPI namespace; The first 6238to initialize the regions themselves, the second to execute the 6239_REG methods. This fixed some interdependencies across _REG 6240methods found on some machines. 6241 6242Fixed a problem where a Store(Local0, Local1) could simply update 6243the object reference count, and not create a new copy of the 6244object if the Local1 is uninitialized. 6245 6246Implemented support for the _SST reserved method during sleep 6247transitions. 6248 6249Implemented support to clear the SLP_TYP and SLP_EN bits when 6250waking up, this is apparently required by some machines. 6251 6252When sleeping, clear the wake status only if SleepState is not S5. 6253 6254Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6255pointer arithmetic advanced a string pointer too far. 6256 6257Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6258could be returned if the requested table has not been loaded. 6259 6260Within the support for IRQ resources, restructured the handling of 6261the active and edge/level bits. 6262 6263Fixed a few problems in AcpiPsxExecute() where memory could be 6264leaked under certain error conditions. 6265 6266Improved error messages for the cases where the ACPI mode could 6267not be entered. 6268 6269Code and Data Size: Current and previous core subsystem library 6270sizes are shown below. These are the code and data sizes for the 6271acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6272these values do not include any ACPI driver or OSPM code. The 6273debug version of the code includes the debug output trace 6274mechanism and has a much larger code and data size. Note that 6275these values will vary depending on the efficiency of the compiler 6276and the compiler options used during generation. 6277 6278 Previous Release (20031029): 6279 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6280 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6281 Current Release: 6282 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6283 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6284 62852) iASL Compiler/Disassembler: 6286 6287Implemented a fix for the iASL disassembler where a bad index was 6288generated. This was most noticeable on 64-bit platforms 6289 6290 6291---------------------------------------- 629229 October 2003. Summary of changes for version 20031029: 6293 62941) ACPI CA Core Subsystem: 6295 6296 6297Fixed a problem where a level-triggered GPE with an associated 6298_Lxx control method was incorrectly cleared twice. 6299 6300Fixed a problem with the Field support code where an access can 6301occur beyond the end-of-region if the field is non-aligned but 6302extends to the very end of the parent region (resulted in an 6303AE_AML_REGION_LIMIT exception.) 6304 6305Fixed a problem with ACPI Fixed Events where an RT Clock handler 6306would not get invoked on an RTC event. The RTC event bitmasks for 6307the PM1 registers were not being initialized properly. 6308 6309Implemented support for executing _STA and _INI methods for 6310Processor objects. Although this is currently not part of the 6311ACPI specification, there is existing ASL code that depends on the 6312init-time execution of these methods. 6313 6314Implemented and deployed a GetDescriptorName function to decode 6315the various types of internal descriptors. Guards against null 6316descriptors during debug output also. 6317 6318Implemented and deployed a GetNodeName function to extract the 4- 6319character namespace node name. This function simplifies the debug 6320and error output, as well as guarding against null pointers during 6321output. 6322 6323Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6324simplify the debug and error output of 64-bit integers. This 6325macro replaces the HIDWORD and LODWORD macros for dumping these 6326integers. 6327 6328Updated the implementation of the Stall() operator to only call 6329AcpiOsStall(), and also return an error if the operand is larger 6330than 255. This preserves the required behavior of not 6331relinquishing the processor, as would happen if AcpiOsSleep() was 6332called for "long stalls". 6333 6334Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6335initialized are now treated as NOOPs. 6336 6337Cleaned up a handful of warnings during 64-bit generation. 6338 6339Fixed a reported error where and incorrect GPE number was passed 6340to the GPE dispatch handler. This value is only used for error 6341output, however. Used this opportunity to clean up and streamline 6342the GPE dispatch code. 6343 6344Code and Data Size: Current and previous core subsystem library 6345sizes are shown below. These are the code and data sizes for the 6346acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6347these values do not include any ACPI driver or OSPM code. The 6348 6349debug version of the code includes the debug output trace 6350mechanism and has a much larger code and data size. Note that 6351these values will vary depending on the efficiency of the compiler 6352and the compiler options used during generation. 6353 6354 Previous Release (20031002): 6355 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6356 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6357 Current Release: 6358 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6359 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6360 6361 63622) iASL Compiler/Disassembler: 6363 6364Updated the iASL compiler to return an error if the operand to the 6365Stall() operator is larger than 255. 6366 6367 6368---------------------------------------- 636902 October 2003. Summary of changes for version 20031002: 6370 6371 63721) ACPI CA Core Subsystem: 6373 6374Fixed a problem with Index Fields where the index was not 6375incremented for fields that require multiple writes to the 6376index/data registers (Fields that are wider than the data 6377register.) 6378 6379Fixed a problem with all Field objects where a write could go 6380beyond the end-of-field if the field was larger than the access 6381granularity and therefore required multiple writes to complete the 6382request. An extra write beyond the end of the field could happen 6383inadvertently. 6384 6385Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6386would incorrectly be returned if the width of the Data Register 6387was larger than the specified field access width. 6388 6389Completed fixes for LoadTable() and Unload() and verified their 6390operation. Implemented full support for the "DdbHandle" object 6391throughout the ACPI CA subsystem. 6392 6393Implemented full support for the MADT and ECDT tables in the ACPI 6394CA header files. Even though these tables are not directly 6395consumed by ACPI CA, the header definitions are useful for ACPI 6396device drivers. 6397 6398Integrated resource descriptor fixes posted to the Linux ACPI 6399list. This included checks for minimum descriptor length, and 6400support for trailing NULL strings within descriptors that have 6401optional string elements. 6402 6403Code and Data Size: Current and previous core subsystem library 6404sizes are shown below. These are the code and data sizes for the 6405acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6406these values do not include any ACPI driver or OSPM code. The 6407debug version of the code includes the debug output trace 6408mechanism and has a much larger code and data size. Note that 6409these values will vary depending on the efficiency of the compiler 6410and the compiler options used during generation. 6411 6412 Previous Release (20030918): 6413 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6414 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6415 Current Release: 6416 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6417 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6418 6419 64202) iASL Compiler: 6421 6422Implemented detection of non-ASCII characters within the input 6423source ASL file. This catches attempts to compile binary (AML) 6424files early in the compile, with an informative error message. 6425 6426Fixed a problem where the disassembler would fault if the output 6427filename could not be generated or if the output file could not be 6428opened. 6429 6430---------------------------------------- 643118 September 2003. Summary of changes for version 20030918: 6432 6433 64341) ACPI CA Core Subsystem: 6435 6436Found and fixed a longstanding problem with the late execution of 6437the various deferred AML opcodes (such as Operation Regions, 6438Buffer Fields, Buffers, and Packages). If the name string 6439specified for the name of the new object placed the object in a 6440scope other than the current scope, the initialization/execution 6441of the opcode failed. The solution to this problem was to 6442implement a mechanism where the late execution of such opcodes 6443does not attempt to lookup/create the name a second time in an 6444incorrect scope. This fixes the "region size computed 6445incorrectly" problem. 6446 6447Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6448Global Lock AE_BAD_PARAMETER error. 6449 6450Fixed several 64-bit issues with prototypes, casting and data 6451types. 6452 6453Removed duplicate prototype from acdisasm.h 6454 6455Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6456 6457Code and Data Size: Current and previous core subsystem library 6458sizes are shown below. These are the code and data sizes for the 6459acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6460these values do not include any ACPI driver or OSPM code. The 6461debug version of the code includes the debug output trace 6462mechanism and has a much larger code and data size. Note that 6463these values will vary depending on the efficiency of the compiler 6464and the compiler options used during generation. 6465 6466 Previous Release: 6467 6468 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6469 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6470 Current Release: 6471 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6472 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6473 6474 64752) Linux: 6476 6477Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6478correct sleep time in seconds. 6479 6480---------------------------------------- 648114 July 2003. Summary of changes for version 20030619: 6482 64831) ACPI CA Core Subsystem: 6484 6485Parse SSDTs in order discovered, as opposed to reverse order 6486(Hrvoje Habjanic) 6487 6488Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6489Klausner, 6490 Nate Lawson) 6491 6492 64932) Linux: 6494 6495Dynamically allocate SDT list (suggested by Andi Kleen) 6496 6497proc function return value cleanups (Andi Kleen) 6498 6499Correctly handle NMI watchdog during long stalls (Andrew Morton) 6500 6501Make it so acpismp=force works (reported by Andrew Morton) 6502 6503 6504---------------------------------------- 650519 June 2003. Summary of changes for version 20030619: 6506 65071) ACPI CA Core Subsystem: 6508 6509Fix To/FromBCD, eliminating the need for an arch-specific #define. 6510 6511Do not acquire a semaphore in the S5 shutdown path. 6512 6513Fix ex_digits_needed for 0. (Takayoshi Kochi) 6514 6515Fix sleep/stall code reversal. (Andi Kleen) 6516 6517Revert a change having to do with control method calling 6518semantics. 6519 65202) Linux: 6521 6522acpiphp update (Takayoshi Kochi) 6523 6524Export acpi_disabled for sonypi (Stelian Pop) 6525 6526Mention acpismp=force in config help 6527 6528Re-add acpitable.c and acpismp=force. This improves backwards 6529 6530compatibility and also cleans up the code to a significant degree. 6531 6532Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6533 6534---------------------------------------- 653522 May 2003. Summary of changes for version 20030522: 6536 65371) ACPI CA Core Subsystem: 6538 6539Found and fixed a reported problem where an AE_NOT_FOUND error 6540occurred occasionally during _BST evaluation. This turned out to 6541be an Owner ID allocation issue where a called method did not get 6542a new ID assigned to it. Eventually, (after 64k calls), the Owner 6543ID UINT16 would wraparound so that the ID would be the same as the 6544caller's and the called method would delete the caller's 6545namespace. 6546 6547Implemented extended error reporting for control methods that are 6548aborted due to a run-time exception. Output includes the exact 6549AML instruction that caused the method abort, a dump of the method 6550locals and arguments at the time of the abort, and a trace of all 6551nested control method calls. 6552 6553Modified the interpreter to allow the creation of buffers of zero 6554length from the AML code. Implemented new code to ensure that no 6555attempt is made to actually allocate a memory buffer (of length 6556zero) - instead, a simple buffer object with a NULL buffer pointer 6557and length zero is created. A warning is no longer issued when 6558the AML attempts to create a zero-length buffer. 6559 6560Implemented a workaround for the "leading asterisk issue" in 6561_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6562asterisk is automatically removed if present in any HID, UID, or 6563CID strings. The iASL compiler will still flag this asterisk as 6564an error, however. 6565 6566Implemented full support for _CID methods that return a package of 6567multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6568now additionally returns a device _CID list if present. This 6569required a change to the external interface in order to pass an 6570ACPI_BUFFER object as a parameter since the _CID list is of 6571variable length. 6572 6573Fixed a problem with the new AE_SAME_HANDLER exception where 6574handler initialization code did not know about this exception. 6575 6576Code and Data Size: Current and previous core subsystem library 6577sizes are shown below. These are the code and data sizes for the 6578acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6579these values do not include any ACPI driver or OSPM code. The 6580debug version of the code includes the debug output trace 6581mechanism and has a much larger code and data size. Note that 6582these values will vary depending on the efficiency of the compiler 6583and the compiler options used during generation. 6584 6585 Previous Release (20030509): 6586 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6587 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6588 Current Release: 6589 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6590 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6591 6592 65932) Linux: 6594 6595Fixed a bug in which we would reinitialize the ACPI interrupt 6596after it was already working, thus disabling all ACPI and the IRQs 6597for any other device sharing the interrupt. (Thanks to Stian 6598Jordet) 6599 6600Toshiba driver update (John Belmonte) 6601 6602Return only 0 or 1 for our interrupt handler status (Andrew 6603Morton) 6604 6605 66063) iASL Compiler: 6607 6608Fixed a reported problem where multiple (nested) ElseIf() 6609statements were not handled correctly by the compiler, resulting 6610in incorrect warnings and incorrect AML code. This was a problem 6611in both the ASL parser and the code generator. 6612 6613 66144) Documentation: 6615 6616Added changes to existing interfaces, new exception codes, and new 6617text concerning reference count object management versus garbage 6618collection. 6619 6620---------------------------------------- 662109 May 2003. Summary of changes for version 20030509. 6622 6623 66241) ACPI CA Core Subsystem: 6625 6626Changed the subsystem initialization sequence to hold off 6627installation of address space handlers until the hardware has been 6628initialized and the system has entered ACPI mode. This is because 6629the installation of space handlers can cause _REG methods to be 6630run. Previously, the _REG methods could potentially be run before 6631ACPI mode was enabled. 6632 6633Fixed some memory leak issues related to address space handler and 6634notify handler installation. There were some problems with the 6635reference count mechanism caused by the fact that the handler 6636objects are shared across several namespace objects. 6637 6638Fixed a reported problem where reference counts within the 6639namespace were not properly updated when named objects created by 6640method execution were deleted. 6641 6642Fixed a reported problem where multiple SSDTs caused a deletion 6643issue during subsystem termination. Restructured the table data 6644structures to simplify the linked lists and the related code. 6645 6646Fixed a problem where the table ID associated with secondary 6647tables (SSDTs) was not being propagated into the namespace objects 6648created by those tables. This would only present a problem for 6649tables that are unloaded at run-time, however. 6650 6651Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6652type as the length parameter (instead of UINT32). 6653 6654Solved a long-standing problem where an ALREADY_EXISTS error 6655appears on various systems. This problem could happen when there 6656are multiple PCI_Config operation regions under a single PCI root 6657bus. This doesn't happen very frequently, but there are some 6658systems that do this in the ASL. 6659 6660Fixed a reported problem where the internal DeleteNode function 6661was incorrectly handling the case where a namespace node was the 6662first in the parent's child list, and had additional peers (not 6663the only child, but first in the list of children.) 6664 6665Code and Data Size: Current core subsystem library sizes are shown 6666below. These are the code and data sizes for the acpica.lib 6667produced by the Microsoft Visual C++ 6.0 compiler, and these 6668values do not include any ACPI driver or OSPM code. The debug 6669version of the code includes the debug output trace mechanism and 6670has a much larger code and data size. Note that these values will 6671vary depending on the efficiency of the compiler and the compiler 6672options used during generation. 6673 6674 Previous Release 6675 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6676 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6677 Current Release: 6678 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6679 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6680 6681 66822) Linux: 6683 6684Allow ":" in OS override string (Ducrot Bruno) 6685 6686Kobject fix (Greg KH) 6687 6688 66893 iASL Compiler/Disassembler: 6690 6691Fixed a problem in the generation of the C source code files (AML 6692is emitted in C source statements for BIOS inclusion) where the 6693Ascii dump that appears within a C comment at the end of each line 6694could cause a compile time error if the AML sequence happens to 6695have an open comment or close comment sequence embedded. 6696 6697 6698---------------------------------------- 669924 April 2003. Summary of changes for version 20030424. 6700 6701 67021) ACPI CA Core Subsystem: 6703 6704Support for big-endian systems has been implemented. Most of the 6705support has been invisibly added behind big-endian versions of the 6706ACPI_MOVE_* macros. 6707 6708Fixed a problem in AcpiHwDisableGpeBlock() and 6709AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6710low level hardware write routine. The offset parameter was 6711actually eliminated from the low level read/write routines because 6712they had become obsolete. 6713 6714Fixed a problem where a handler object was deleted twice during 6715the removal of a fixed event handler. 6716 6717 67182) Linux: 6719 6720A fix for SMP systems with link devices was contributed by 6721 6722Compaq's Dan Zink. 6723 6724(2.5) Return whether we handled the interrupt in our IRQ handler. 6725(Linux ISRs no longer return void, so we can propagate the handler 6726return value from the ACPI CA core back to the OS.) 6727 6728 6729 67303) Documentation: 6731 6732The ACPI CA Programmer Reference has been updated to reflect new 6733interfaces and changes to existing interfaces. 6734 6735---------------------------------------- 673628 March 2003. Summary of changes for version 20030328. 6737 67381) ACPI CA Core Subsystem: 6739 6740The GPE Block Device support has been completed. New interfaces 6741are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6742interfaces (enable, disable, clear, getstatus) have been split 6743into separate interfaces for Fixed Events and General Purpose 6744Events (GPEs) in order to support GPE Block Devices properly. 6745 6746Fixed a problem where the error message "Failed to acquire 6747semaphore" would appear during operations on the embedded 6748controller (EC). 6749 6750Code and Data Size: Current core subsystem library sizes are shown 6751below. These are the code and data sizes for the acpica.lib 6752produced by the Microsoft Visual C++ 6.0 compiler, and these 6753values do not include any ACPI driver or OSPM code. The debug 6754version of the code includes the debug output trace mechanism and 6755has a much larger code and data size. Note that these values will 6756vary depending on the efficiency of the compiler and the compiler 6757options used during generation. 6758 6759 Previous Release 6760 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6761 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6762 Current Release: 6763 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6764 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6765 6766 6767---------------------------------------- 676828 February 2003. Summary of changes for version 20030228. 6769 6770 67711) ACPI CA Core Subsystem: 6772 6773The GPE handling and dispatch code has been completely overhauled 6774in preparation for support of GPE Block Devices (ID ACPI0006). 6775This affects internal data structures and code only; there should 6776be no differences visible externally. One new file has been 6777added, evgpeblk.c 6778 6779The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6780fields that are used to determine the GPE block lengths. The 6781REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6782structures are ignored. This is per the ACPI specification but it 6783isn't very clear. The full 256 Block 0/1 GPEs are now supported 6784(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6785 6786In the SCI interrupt handler, removed the read of the PM1_CONTROL 6787register to look at the SCI_EN bit. On some machines, this read 6788causes an SMI event and greatly slows down SCI events. (This may 6789in fact be the cause of slow battery status response on some 6790systems.) 6791 6792Fixed a problem where a store of a NULL string to a package object 6793could cause the premature deletion of the object. This was seen 6794during execution of the battery _BIF method on some systems, 6795resulting in no battery data being returned. 6796 6797Added AcpiWalkResources interface to simplify parsing of resource 6798lists. 6799 6800Code and Data Size: Current core subsystem library sizes are shown 6801below. These are the code and data sizes for the acpica.lib 6802produced by the Microsoft Visual C++ 6.0 compiler, and these 6803values do not include any ACPI driver or OSPM code. The debug 6804version of the code includes the debug output trace mechanism and 6805has a much larger code and data size. Note that these values will 6806vary depending on the efficiency of the compiler and the compiler 6807options used during generation. 6808 6809 Previous Release 6810 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6811 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6812 Current Release: 6813 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6814 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6815 6816 68172) Linux 6818 6819S3 fixes (Ole Rohne) 6820 6821Update ACPI PHP driver with to use new acpi_walk_resource API 6822(Bjorn Helgaas) 6823 6824Add S4BIOS support (Pavel Machek) 6825 6826Map in entire table before performing checksum (John Stultz) 6827 6828Expand the mem= cmdline to allow the specification of reserved and 6829ACPI DATA blocks (Pavel Machek) 6830 6831Never use ACPI on VISWS 6832 6833Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6834 6835Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6836causing us to think that some systems support C2 when they really 6837don't. 6838 6839Do not count processor objects for non-present CPUs (Thanks to 6840Dominik Brodowski) 6841 6842 68433) iASL Compiler: 6844 6845Fixed a problem where ASL include files could not be found and 6846opened. 6847 6848Added support for the _PDC reserved name. 6849 6850 6851---------------------------------------- 685222 January 2003. Summary of changes for version 20030122. 6853 6854 68551) ACPI CA Core Subsystem: 6856 6857Added a check for constructs of the form: Store (Local0, Local0) 6858where Local0 is not initialized. Apparently, some BIOS 6859programmers believe that this is a NOOP. Since this store doesn't 6860do anything anyway, the new prototype behavior will ignore this 6861error. This is a case where we can relax the strict checking in 6862the interpreter in the name of compatibility. 6863 6864 68652) Linux 6866 6867The AcpiSrc Source Conversion Utility has been released with the 6868Linux package for the first time. This is the utility that is 6869used to convert the ACPI CA base source code to the Linux version. 6870 6871(Both) Handle P_BLK lengths shorter than 6 more gracefully 6872 6873(Both) Move more headers to include/acpi, and delete an unused 6874header. 6875 6876(Both) Move drivers/acpi/include directory to include/acpi 6877 6878(Both) Boot functions don't use cmdline, so don't pass it around 6879 6880(Both) Remove include of unused header (Adrian Bunk) 6881 6882(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6883the 6884former now also includes the latter, acpiphp.h only needs the one, 6885now. 6886 6887(2.5) Make it possible to select method of bios restoring after S3 6888resume. [=> no more ugly ifdefs] (Pavel Machek) 6889 6890(2.5) Make proc write interfaces work (Pavel Machek) 6891 6892(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6893 6894(2.5) Break out ACPI Perf code into its own module, under cpufreq 6895(Dominik Brodowski) 6896 6897(2.4) S4BIOS support (Ducrot Bruno) 6898 6899(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6900Visinoni) 6901 6902 69033) iASL Compiler: 6904 6905Added support to disassemble SSDT and PSDTs. 6906 6907Implemented support to obtain SSDTs from the Windows registry if 6908available. 6909 6910 6911---------------------------------------- 691209 January 2003. Summary of changes for version 20030109. 6913 69141) ACPI CA Core Subsystem: 6915 6916Changed the behavior of the internal Buffer-to-String conversion 6917function. The current ACPI specification states that the contents 6918of the buffer are "converted to a string of two-character 6919hexadecimal numbers, each separated by a space". Unfortunately, 6920this definition is not backwards compatible with existing ACPI 1.0 6921implementations (although the behavior was not defined in the ACPI 69221.0 specification). The new behavior simply copies data from the 6923buffer to the string until a null character is found or the end of 6924the buffer is reached. The new String object is always null 6925terminated. This problem was seen during the generation of _BIF 6926battery data where incorrect strings were returned for battery 6927type, etc. This will also require an errata to the ACPI 6928specification. 6929 6930Renamed all instances of NATIVE_UINT and NATIVE_INT to 6931ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6932 6933Copyright in all module headers (both Linux and non-Linux) has be 6934updated to 2003. 6935 6936Code and Data Size: Current core subsystem library sizes are shown 6937below. These are the code and data sizes for the acpica.lib 6938produced by the Microsoft Visual C++ 6.0 compiler, and these 6939values do not include any ACPI driver or OSPM code. The debug 6940version of the code includes the debug output trace mechanism and 6941has a much larger code and data size. Note that these values will 6942vary depending on the efficiency of the compiler and the compiler 6943options used during generation. 6944 6945 Previous Release 6946 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6947 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6948 Current Release: 6949 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6950 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6951 6952 69532) Linux 6954 6955Fixed an oops on module insertion/removal (Matthew Tippett) 6956 6957(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6958 6959(2.5) Replace pr_debug (Randy Dunlap) 6960 6961(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6962 6963(Both) Eliminate spawning of thread from timer callback, in favor 6964of schedule_work() 6965 6966(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6967 6968(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6969 6970(Both) Add missing statics to button.c (Pavel Machek) 6971 6972Several changes have been made to the source code translation 6973utility that generates the Linux Code in order to make the code 6974more "Linux-like": 6975 6976All typedefs on structs and unions have been removed in keeping 6977with the Linux coding style. 6978 6979Removed the non-Linux SourceSafe module revision number from each 6980module header. 6981 6982Completed major overhaul of symbols to be lowercased for linux. 6983Doubled the number of symbols that are lowercased. 6984 6985Fixed a problem where identifiers within procedure headers and 6986within quotes were not fully lower cased (they were left with a 6987starting capital.) 6988 6989Some C macros whose only purpose is to allow the generation of 16- 6990bit code are now completely removed in the Linux code, increasing 6991readability and maintainability. 6992 6993---------------------------------------- 6994 699512 December 2002. Summary of changes for version 20021212. 6996 6997 69981) ACPI CA Core Subsystem: 6999 7000Fixed a problem where the creation of a zero-length AML Buffer 7001would cause a fault. 7002 7003Fixed a problem where a Buffer object that pointed to a static AML 7004buffer (in an ACPI table) could inadvertently be deleted, causing 7005memory corruption. 7006 7007Fixed a problem where a user buffer (passed in to the external 7008ACPI CA interfaces) could be overwritten if the buffer was too 7009small to complete the operation, causing memory corruption. 7010 7011Fixed a problem in the Buffer-to-String conversion code where a 7012string of length one was always returned, regardless of the size 7013of the input Buffer object. 7014 7015Removed the NATIVE_CHAR data type across the entire source due to 7016lack of need and lack of consistent use. 7017 7018Code and Data Size: Current core subsystem library sizes are shown 7019below. These are the code and data sizes for the acpica.lib 7020produced by the Microsoft Visual C++ 6.0 compiler, and these 7021values do not include any ACPI driver or OSPM code. The debug 7022version of the code includes the debug output trace mechanism and 7023has a much larger code and data size. Note that these values will 7024vary depending on the efficiency of the compiler and the compiler 7025options used during generation. 7026 7027 Previous Release 7028 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7029 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7030 Current Release: 7031 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 7032 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 7033 7034 7035---------------------------------------- 703605 December 2002. Summary of changes for version 20021205. 7037 70381) ACPI CA Core Subsystem: 7039 7040Fixed a problem where a store to a String or Buffer object could 7041cause corruption of the DSDT if the object type being stored was 7042the same as the target object type and the length of the object 7043being stored was equal to or smaller than the original (existing) 7044target object. This was seen to cause corruption of battery _BIF 7045buffers if the _BIF method modified the buffer on the fly. 7046 7047Fixed a problem where an internal error was generated if a control 7048method invocation was used in an OperationRegion, Buffer, or 7049Package declaration. This was caused by the deferred parsing of 7050the control method and thus the deferred creation of the internal 7051method object. The solution to this problem was to create the 7052internal method object at the moment the method is encountered in 7053the first pass - so that subsequent references to the method will 7054able to obtain the required parameter count and thus properly 7055parse the method invocation. This problem presented itself as an 7056AE_AML_INTERNAL during the pass 1 parse phase during table load. 7057 7058Fixed a problem where the internal String object copy routine did 7059not always allocate sufficient memory for the target String object 7060and caused memory corruption. This problem was seen to cause 7061"Allocation already present in list!" errors as memory allocation 7062became corrupted. 7063 7064Implemented a new function for the evaluation of namespace objects 7065that allows the specification of the allowable return object 7066types. This simplifies a lot of code that checks for a return 7067object of one or more specific objects returned from the 7068evaluation (such as _STA, etc.) This may become and external 7069function if it would be useful to ACPI-related drivers. 7070 7071Completed another round of prefixing #defines with "ACPI_" for 7072clarity. 7073 7074Completed additional code restructuring to allow more modular 7075linking for iASL compiler and AcpiExec. Several files were split 7076creating new files. New files: nsparse.c dsinit.c evgpe.c 7077 7078Implemented an abort mechanism to terminate an executing control 7079method via the AML debugger. This feature is useful for debugging 7080control methods that depend (wait) for specific hardware 7081responses. 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: 71.4K Code, 9.0K Data, 80.4K Total 7094 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7095 Current Release: 7096 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7097 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7098 7099 71002) iASL Compiler/Disassembler 7101 7102Fixed a compiler code generation problem for "Interrupt" Resource 7103Descriptors. If specified in the ASL, the optional "Resource 7104Source Index" and "Resource Source" fields were not inserted into 7105the correct location within the AML resource descriptor, creating 7106an invalid descriptor. 7107 7108Fixed a disassembler problem for "Interrupt" resource descriptors. 7109The optional "Resource Source Index" and "Resource Source" fields 7110were ignored. 7111 7112 7113---------------------------------------- 711422 November 2002. Summary of changes for version 20021122. 7115 7116 71171) ACPI CA Core Subsystem: 7118 7119Fixed a reported problem where an object stored to a Method Local 7120or Arg was not copied to a new object during the store - the 7121object pointer was simply copied to the Local/Arg. This caused 7122all subsequent operations on the Local/Arg to also affect the 7123original source of the store operation. 7124 7125Fixed a problem where a store operation to a Method Local or Arg 7126was not completed properly if the Local/Arg contained a reference 7127(from RefOf) to a named field. The general-purpose store-to- 7128namespace-node code is now used so that this case is handled 7129automatically. 7130 7131Fixed a problem where the internal object copy routine would cause 7132a protection fault if the object being copied was a Package and 7133contained either 1) a NULL package element or 2) a nested sub- 7134package. 7135 7136Fixed a problem with the GPE initialization that resulted from an 7137ambiguity in the ACPI specification. One section of the 7138specification states that both the address and length of the GPE 7139block must be zero if the block is not supported. Another section 7140implies that only the address need be zero if the block is not 7141supported. The code has been changed so that both the address and 7142the length must be non-zero to indicate a valid GPE block (i.e., 7143if either the address or the length is zero, the GPE block is 7144invalid.) 7145 7146Code and Data Size: Current core subsystem library sizes are shown 7147below. These are the code and data sizes for the acpica.lib 7148produced by the Microsoft Visual C++ 6.0 compiler, and these 7149values do not include any ACPI driver or OSPM code. The debug 7150version of the code includes the debug output trace mechanism and 7151has a much larger code and data size. Note that these values will 7152vary depending on the efficiency of the compiler and the compiler 7153options used during generation. 7154 7155 Previous Release 7156 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7157 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7158 Current Release: 7159 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7160 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7161 7162 71632) Linux 7164 7165Cleaned up EC driver. Exported an external EC read/write 7166interface. By going through this, other drivers (most notably 7167sonypi) will be able to serialize access to the EC. 7168 7169 71703) iASL Compiler/Disassembler 7171 7172Implemented support to optionally generate include files for both 7173ASM and C (the -i switch). This simplifies BIOS development by 7174automatically creating include files that contain external 7175declarations for the symbols that are created within the 7176 7177(optionally generated) ASM and C AML source files. 7178 7179 7180---------------------------------------- 718115 November 2002. Summary of changes for version 20021115. 7182 71831) ACPI CA Core Subsystem: 7184 7185Fixed a memory leak problem where an error during resolution of 7186 7187method arguments during a method invocation from another method 7188failed to cleanup properly by deleting all successfully resolved 7189argument objects. 7190 7191Fixed a problem where the target of the Index() operator was not 7192correctly constructed if the source object was a package. This 7193problem has not been detected because the use of a target operand 7194with Index() is very rare. 7195 7196Fixed a problem with the Index() operator where an attempt was 7197made to delete the operand objects twice. 7198 7199Fixed a problem where an attempt was made to delete an operand 7200twice during execution of the CondRefOf() operator if the target 7201did not exist. 7202 7203Implemented the first of perhaps several internal create object 7204functions that create and initialize a specific object type. This 7205consolidates duplicated code wherever the object is created, thus 7206shrinking the size of the subsystem. 7207 7208Implemented improved debug/error messages for errors that occur 7209during nested method invocations. All executing method pathnames 7210are displayed (with the error) as the call stack is unwound - thus 7211simplifying debug. 7212 7213Fixed a problem introduced in the 10/02 release that caused 7214premature deletion of a buffer object if a buffer was used as an 7215ASL operand where an integer operand is required (Thus causing an 7216implicit object conversion from Buffer to Integer.) The change in 7217the 10/02 release was attempting to fix a memory leak (albeit 7218incorrectly.) 7219 7220Code and Data Size: Current core subsystem library sizes are shown 7221below. These are the code and data sizes for the acpica.lib 7222produced by the Microsoft Visual C++ 6.0 compiler, and these 7223values do not include any ACPI driver or OSPM code. The debug 7224version of the code includes the debug output trace mechanism and 7225has a much larger code and data size. Note that these values will 7226vary depending on the efficiency of the compiler and the compiler 7227options used during generation. 7228 7229 Previous Release 7230 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7231 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7232 Current Release: 7233 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7234 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7235 7236 72372) Linux 7238 7239Changed the implementation of the ACPI semaphores to use down() 7240instead of down_interruptable(). It is important that the 7241execution of ACPI control methods not be interrupted by signals. 7242Methods must run to completion, or the system may be left in an 7243unknown/unstable state. 7244 7245Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7246(Shawn Starr) 7247 7248 72493) iASL Compiler/Disassembler 7250 7251 7252Changed the default location of output files. All output files 7253are now placed in the current directory by default instead of in 7254the directory of the source file. This change may affect some 7255existing makefiles, but it brings the behavior of the compiler in 7256line with other similar tools. The location of the output files 7257can be overridden with the -p command line switch. 7258 7259 7260---------------------------------------- 726111 November 2002. Summary of changes for version 20021111. 7262 7263 72640) ACPI Specification 2.0B is released and is now available at: 7265http://www.acpi.info/index.html 7266 7267 72681) ACPI CA Core Subsystem: 7269 7270Implemented support for the ACPI 2.0 SMBus Operation Regions. 7271This includes the early detection and handoff of the request to 7272the SMBus region handler (avoiding all of the complex field 7273support code), and support for the bidirectional return packet 7274from an SMBus write operation. This paves the way for the 7275development of SMBus drivers in each host operating system. 7276 7277Fixed a problem where the semaphore WAIT_FOREVER constant was 7278defined as 32 bits, but must be 16 bits according to the ACPI 7279specification. This had the side effect of causing ASL 7280Mutex/Event timeouts even though the ASL code requested a wait 7281forever. Changed all internal references to the ACPI timeout 7282parameter to 16 bits to prevent future problems. Changed the name 7283of WAIT_FOREVER to ACPI_WAIT_FOREVER. 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: 71.4K Code, 9.0K Data, 80.4K Total 7296 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7297 Current Release: 7298 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7299 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7300 7301 73022) Linux 7303 7304Module loading/unloading fixes (John Cagle) 7305 7306 73073) iASL Compiler/Disassembler 7308 7309Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7310 7311Implemented support for the disassembly of all SMBus protocol 7312keywords (SMBQuick, SMBWord, etc.) 7313 7314---------------------------------------- 731501 November 2002. Summary of changes for version 20021101. 7316 7317 73181) ACPI CA Core Subsystem: 7319 7320Fixed a problem where platforms that have a GPE1 block but no GPE0 7321block were not handled correctly. This resulted in a "GPE 7322overlap" error message. GPE0 is no longer required. 7323 7324Removed code added in the previous release that inserted nodes 7325into the namespace in alphabetical order. This caused some side- 7326effects on various machines. The root cause of the problem is 7327still under investigation since in theory, the internal ordering 7328of the namespace nodes should not matter. 7329 7330 7331Enhanced error reporting for the case where a named object is not 7332found during control method execution. The full ACPI namepath 7333(name reference) of the object that was not found is displayed in 7334this case. 7335 7336Note: as a result of the overhaul of the namespace object types in 7337the previous release, the namespace nodes for the predefined 7338scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7339instead of ACPI_TYPE_ANY. This simplifies the namespace 7340management code but may affect code that walks the namespace tree 7341looking for specific object types. 7342 7343Code and Data Size: Current core subsystem library sizes are shown 7344below. These are the code and data sizes for the acpica.lib 7345produced by the Microsoft Visual C++ 6.0 compiler, and these 7346values do not include any ACPI driver or OSPM code. The debug 7347version of the code includes the debug output trace mechanism and 7348has a much larger code and data size. Note that these values will 7349vary depending on the efficiency of the compiler and the compiler 7350options used during generation. 7351 7352 Previous Release 7353 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7354 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7355 Current Release: 7356 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7357 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7358 7359 73602) Linux 7361 7362Fixed a problem introduced in the previous release where the 7363Processor and Thermal objects were not recognized and installed in 7364/proc. This was related to the scope type change described above. 7365 7366 73673) iASL Compiler/Disassembler 7368 7369Implemented the -g option to get all of the required ACPI tables 7370from the registry and save them to files (Windows version of the 7371compiler only.) The required tables are the FADT, FACS, and DSDT. 7372 7373Added ACPI table checksum validation during table disassembly in 7374order to catch corrupted tables. 7375 7376 7377---------------------------------------- 737822 October 2002. Summary of changes for version 20021022. 7379 73801) ACPI CA Core Subsystem: 7381 7382Implemented a restriction on the Scope operator that the target 7383must already exist in the namespace at the time the operator is 7384encountered (during table load or method execution). In other 7385words, forward references are not allowed and Scope() cannot 7386create a new object. This changes the previous behavior where the 7387interpreter would create the name if not found. This new behavior 7388correctly enables the search-to-root algorithm during namespace 7389lookup of the target name. Because of this upsearch, this fixes 7390the known Compaq _SB_.OKEC problem and makes both the AML 7391interpreter and iASL compiler compatible with other ACPI 7392implementations. 7393 7394Completed a major overhaul of the internal ACPI object types for 7395the ACPI Namespace and the associated operand objects. Many of 7396these types had become obsolete with the introduction of the two- 7397pass namespace load. This cleanup simplifies the code and makes 7398the entire namespace load mechanism much clearer and easier to 7399understand. 7400 7401Improved debug output for tracking scope opening/closing to help 7402diagnose scoping issues. The old scope name as well as the new 7403scope name are displayed. Also improved error messages for 7404problems with ASL Mutex objects and error messages for GPE 7405problems. 7406 7407Cleaned up the namespace dump code, removed obsolete code. 7408 7409All string output (for all namespace/object dumps) now uses the 7410common ACPI string output procedure which handles escapes properly 7411and does not emit non-printable characters. 7412 7413Fixed some issues with constants in the 64-bit version of the 7414local C library (utclib.c) 7415 7416 74172) Linux 7418 7419EC Driver: No longer attempts to acquire the Global Lock at 7420interrupt level. 7421 7422 74233) iASL Compiler/Disassembler 7424 7425Implemented ACPI 2.0B grammar change that disallows all Type 1 and 74262 opcodes outside of a control method. This means that the 7427"executable" operators (versus the "namespace" operators) cannot 7428be used at the table level; they can only be used within a control 7429method. 7430 7431Implemented the restriction on the Scope() operator where the 7432target must already exist in the namespace at the time the 7433operator is encountered (during ASL compilation). In other words, 7434forward references are not allowed and Scope() cannot create a new 7435object. This makes the iASL compiler compatible with other ACPI 7436implementations and makes the Scope() implementation adhere to the 7437ACPI specification. 7438 7439Fixed a problem where namepath optimization for the Alias operator 7440was optimizing the wrong path (of the two namepaths.) This caused 7441a "Missing alias link" error message. 7442 7443Fixed a problem where an "unknown reserved name" warning could be 7444incorrectly generated for names like "_SB" when the trailing 7445underscore is not used in the original ASL. 7446 7447Fixed a problem where the reserved name check did not handle 7448NamePaths with multiple NameSegs correctly. The first nameseg of 7449the NamePath was examined instead of the last NameSeg. 7450 7451 7452---------------------------------------- 7453 745402 October 2002. Summary of changes for this release. 7455 7456 74571) ACPI CA Core Subsystem version 20021002: 7458 7459Fixed a problem where a store/copy of a string to an existing 7460string did not always set the string length properly in the String 7461object. 7462 7463Fixed a reported problem with the ToString operator where the 7464behavior was identical to the ToHexString operator instead of just 7465simply converting a raw buffer to a string data type. 7466 7467Fixed a problem where CopyObject and the other "explicit" 7468conversion operators were not updating the internal namespace node 7469type as part of the store operation. 7470 7471Fixed a memory leak during implicit source operand conversion 7472where the original object was not deleted if it was converted to a 7473new object of a different type. 7474 7475Enhanced error messages for all problems associated with namespace 7476lookups. Common procedure generates and prints the lookup name as 7477well as the formatted status. 7478 7479Completed implementation of a new design for the Alias support 7480within the namespace. The existing design did not handle the case 7481where a new object was assigned to one of the two names due to the 7482use of an explicit conversion operator, resulting in the two names 7483pointing to two different objects. The new design simply points 7484the Alias name to the original name node - not to the object. 7485This results in a level of indirection that must be handled in the 7486name resolution mechanism. 7487 7488Code and Data Size: Current core subsystem library sizes are shown 7489below. These are the code and data sizes for the acpica.lib 7490produced by the Microsoft Visual C++ 6.0 compiler, and these 7491values do not include any ACPI driver or OSPM code. The debug 7492version of the code includes the debug output trace mechanism and 7493has a larger code and data size. Note that these values will vary 7494depending on the efficiency of the compiler and the compiler 7495options used during generation. 7496 7497 Previous Release 7498 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7499 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7500 Current Release: 7501 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7502 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7503 7504 75052) Linux 7506 7507Initialize thermal driver's timer before it is used. (Knut 7508Neumann) 7509 7510Allow handling negative celsius values. (Kochi Takayoshi) 7511 7512Fix thermal management and make trip points. R/W (Pavel Machek) 7513 7514Fix /proc/acpi/sleep. (P. Christeas) 7515 7516IA64 fixes. (David Mosberger) 7517 7518Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7519 7520Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7521Brodowski) 7522 7523 75243) iASL Compiler/Disassembler 7525 7526Clarified some warning/error messages. 7527 7528 7529---------------------------------------- 753018 September 2002. Summary of changes for this release. 7531 7532 75331) ACPI CA Core Subsystem version 20020918: 7534 7535Fixed a reported problem with reference chaining (via the Index() 7536and RefOf() operators) in the ObjectType() and SizeOf() operators. 7537The definition of these operators includes the dereferencing of 7538all chained references to return information on the base object. 7539 7540Fixed a problem with stores to indexed package elements - the 7541existing code would not complete the store if an "implicit 7542conversion" was not performed. In other words, if the existing 7543object (package element) was to be replaced completely, the code 7544didn't handle this case. 7545 7546Relaxed typechecking on the ASL "Scope" operator to allow the 7547target name to refer to an object of type Integer, String, or 7548Buffer, in addition to the scoping object types (Device, 7549predefined Scopes, Processor, PowerResource, and ThermalZone.) 7550This allows existing AML code that has workarounds for a bug in 7551Windows to function properly. A warning is issued, however. This 7552affects both the AML interpreter and the iASL compiler. Below is 7553an example of this type of ASL code: 7554 7555 Name(DEB,0x00) 7556 Scope(DEB) 7557 { 7558 7559Fixed some reported problems with 64-bit integer support in the 7560local implementation of C library functions (clib.c) 7561 7562 75632) Linux 7564 7565Use ACPI fix map region instead of IOAPIC region, since it is 7566undefined in non-SMP. 7567 7568Ensure that the SCI has the proper polarity and trigger, even on 7569systems that do not have an interrupt override entry in the MADT. 7570 75712.5 big driver reorganization (Pat Mochel) 7572 7573Use early table mapping code from acpitable.c (Andi Kleen) 7574 7575New blacklist entries (Andi Kleen) 7576 7577Blacklist improvements. Split blacklist code out into a separate 7578file. Move checking the blacklist to very early. Previously, we 7579would use ACPI tables, and then halfway through init, check the 7580blacklist -- too late. Now, it's early enough to completely fall- 7581back to non-ACPI. 7582 7583 75843) iASL Compiler/Disassembler version 20020918: 7585 7586Fixed a problem where the typechecking code didn't know that an 7587alias could point to a method. In other words, aliases were not 7588being dereferenced during typechecking. 7589 7590 7591---------------------------------------- 759229 August 2002. Summary of changes for this release. 7593 75941) ACPI CA Core Subsystem Version 20020829: 7595 7596If the target of a Scope() operator already exists, it must be an 7597object type that actually opens a scope -- such as a Device, 7598Method, Scope, etc. This is a fatal runtime error. Similar error 7599check has been added to the iASL compiler also. 7600 7601Tightened up the namespace load to disallow multiple names in the 7602same scope. This previously was allowed if both objects were of 7603the same type. (i.e., a lookup was the same as entering a new 7604name). 7605 7606 76072) Linux 7608 7609Ensure that the ACPI interrupt has the proper trigger and 7610polarity. 7611 7612local_irq_disable is extraneous. (Matthew Wilcox) 7613 7614Make "acpi=off" actually do what it says, and not use the ACPI 7615interpreter *or* the tables. 7616 7617Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7618Takayoshi) 7619 7620 76213) iASL Compiler/Disassembler Version 20020829: 7622 7623Implemented namepath optimization for name declarations. For 7624example, a declaration like "Method (\_SB_.ABCD)" would get 7625optimized to "Method (ABCD)" if the declaration is within the 7626\_SB_ scope. This optimization is in addition to the named 7627reference path optimization first released in the previous 7628version. This would seem to complete all possible optimizations 7629for namepaths within the ASL/AML. 7630 7631If the target of a Scope() operator already exists, it must be an 7632object type that actually opens a scope -- such as a Device, 7633Method, Scope, etc. 7634 7635Implemented a check and warning for unreachable code in the same 7636block below a Return() statement. 7637 7638Fixed a problem where the listing file was not generated if the 7639compiler aborted if the maximum error count was exceeded (200). 7640 7641Fixed a problem where the typechecking of method return values was 7642broken. This includes the check for a return value when the 7643method is invoked as a TermArg (a return value is expected.) 7644 7645Fixed a reported problem where EOF conditions during a quoted 7646string or comment caused a fault. 7647 7648 7649---------------------------------------- 765015 August 2002. Summary of changes for this release. 7651 76521) ACPI CA Core Subsystem Version 20020815: 7653 7654Fixed a reported problem where a Store to a method argument that 7655contains a reference did not perform the indirect store correctly. 7656This problem was created during the conversion to the new 7657reference object model - the indirect store to a method argument 7658code was not updated to reflect the new model. 7659 7660Reworked the ACPI mode change code to better conform to ACPI 2.0, 7661handle corner cases, and improve code legibility (Kochi Takayoshi) 7662 7663Fixed a problem with the pathname parsing for the carat (^) 7664prefix. The heavy use of the carat operator by the new namepath 7665optimization in the iASL compiler uncovered a problem with the AML 7666interpreter handling of this prefix. In the case where one or 7667more carats precede a single nameseg, the nameseg was treated as 7668standalone and the search rule (to root) was inadvertently 7669applied. This could cause both the iASL compiler and the 7670interpreter to find the wrong object or to miss the error that 7671should occur if the object does not exist at that exact pathname. 7672 7673Found and fixed the problem where the HP Pavilion DSDT would not 7674load. This was a relatively minor tweak to the table loading code 7675(a problem caused by the unexpected encounter with a method 7676invocation not within a control method), but it does not solve the 7677overall issue of the execution of AML code at the table level. 7678This investigation is still ongoing. 7679 7680Code and Data Size: Current core subsystem library sizes are shown 7681below. These are the code and data sizes for the acpica.lib 7682produced by the Microsoft Visual C++ 6.0 compiler, and these 7683values do not include any ACPI driver or OSPM code. The debug 7684version of the code includes the debug output trace mechanism and 7685has a larger code and data size. Note that these values will vary 7686depending on the efficiency of the compiler and the compiler 7687options used during generation. 7688 7689 Previous Release 7690 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7691 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7692 Current Release: 7693 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7694 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7695 7696 76972) Linux 7698 7699Remove redundant slab.h include (Brad Hards) 7700 7701Fix several bugs in thermal.c (Herbert Nachtnebel) 7702 7703Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7704 7705Change acpi_system_suspend to use updated irq functions (Pavel 7706Machek) 7707 7708Export acpi_get_firmware_table (Matthew Wilcox) 7709 7710Use proper root proc entry for ACPI (Kochi Takayoshi) 7711 7712Fix early-boot table parsing (Bjorn Helgaas) 7713 7714 77153) iASL Compiler/Disassembler 7716 7717Reworked the compiler options to make them more consistent and to 7718use two-letter options where appropriate. We were running out of 7719sensible letters. This may break some makefiles, so check the 7720current options list by invoking the compiler with no parameters. 7721 7722Completed the design and implementation of the ASL namepath 7723optimization option for the compiler. This option optimizes all 7724references to named objects to the shortest possible path. The 7725first attempt tries to utilize a single nameseg (4 characters) and 7726the "search-to-root" algorithm used by the interpreter. If that 7727cannot be used (because either the name is not in the search path 7728or there is a conflict with another object with the same name), 7729the pathname is optimized using the carat prefix (usually a 7730shorter string than specifying the entire path from the root.) 7731 7732Implemented support to obtain the DSDT from the Windows registry 7733(when the disassembly option is specified with no input file). 7734Added this code as the implementation for AcpiOsTableOverride in 7735the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7736utility) to scan memory for the DSDT to the AcpiOsTableOverride 7737function in the DOS OSL to make the disassembler truly OS 7738independent. 7739 7740Implemented a new option to disassemble and compile in one step. 7741When used without an input filename, this option will grab the 7742DSDT from the local machine, disassemble it, and compile it in one 7743step. 7744 7745Added a warning message for invalid escapes (a backslash followed 7746by any character other than the allowable escapes). This catches 7747the quoted string error "\_SB_" (which should be "\\_SB_" ). 7748 7749Also, there are numerous instances in the ACPI specification where 7750this error occurs. 7751 7752Added a compiler option to disable all optimizations. This is 7753basically the "compatibility mode" because by using this option, 7754the AML code will come out exactly the same as other ASL 7755compilers. 7756 7757Added error messages for incorrectly ordered dependent resource 7758functions. This includes: missing EndDependentFn macro at end of 7759dependent resource list, nested dependent function macros (both 7760start and end), and missing StartDependentFn macro. These are 7761common errors that should be caught at compile time. 7762 7763Implemented _OSI support for the disassembler and compiler. _OSI 7764must be included in the namespace for proper disassembly (because 7765the disassembler must know the number of arguments.) 7766 7767Added an "optimization" message type that is optional (off by 7768default). This message is used for all optimizations - including 7769constant folding, integer optimization, and namepath optimization. 7770 7771---------------------------------------- 777225 July 2002. Summary of changes for this release. 7773 7774 77751) ACPI CA Core Subsystem Version 20020725: 7776 7777The AML Disassembler has been enhanced to produce compilable ASL 7778code and has been integrated into the iASL compiler (see below) as 7779well as the single-step disassembly for the AML debugger and the 7780disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7781resource templates and macros are fully supported. The 7782disassembler has been tested on over 30 different AML files, 7783producing identical AML when the resulting disassembled ASL file 7784is recompiled with the same ASL compiler. 7785 7786Modified the Resource Manager to allow zero interrupts and zero 7787dma channels during the GetCurrentResources call. This was 7788causing problems on some platforms. 7789 7790Added the AcpiOsRedirectOutput interface to the OSL to simplify 7791output redirection for the AcpiOsPrintf and AcpiOsVprintf 7792interfaces. 7793 7794Code and Data Size: Current core subsystem library sizes are shown 7795below. These are the code and data sizes for the acpica.lib 7796produced by the Microsoft Visual C++ 6.0 compiler, and these 7797values do not include any ACPI driver or OSPM code. The debug 7798version of the code includes the debug output trace mechanism and 7799has a larger code and data size. Note that these values will vary 7800depending on the efficiency of the compiler and the compiler 7801options used during generation. 7802 7803 Previous Release 7804 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7805 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7806 Current Release: 7807 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7808 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7809 7810 78112) Linux 7812 7813Fixed a panic in the EC driver (Dominik Brodowski) 7814 7815Implemented checksum of the R/XSDT itself during Linux table scan 7816(Richard Schaal) 7817 7818 78193) iASL compiler 7820 7821The AML disassembler is integrated into the compiler. The "-d" 7822option invokes the disassembler to completely disassemble an 7823input AML file, producing as output a text ASL file with the 7824extension ".dsl" (to avoid name collisions with existing .asl 7825source files.) A future enhancement will allow the disassembler 7826to obtain the BIOS DSDT from the registry under Windows. 7827 7828Fixed a problem with the VendorShort and VendorLong resource 7829descriptors where an invalid AML sequence was created. 7830 7831Implemented a fix for BufferData term in the ASL parser. It was 7832inadvertently defined twice, allowing invalid syntax to pass and 7833causing reduction conflicts. 7834 7835Fixed a problem where the Ones opcode could get converted to a 7836value of zero if "Ones" was used where a byte, word or dword value 7837was expected. The 64-bit value is now truncated to the correct 7838size with the correct value. 7839 7840 7841 7842---------------------------------------- 784302 July 2002. Summary of changes for this release. 7844 7845 78461) ACPI CA Core Subsystem Version 20020702: 7847 7848The Table Manager code has been restructured to add several new 7849features. Tables that are not required by the core subsystem 7850(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7851validated in any way and are returned from AcpiGetFirmwareTable if 7852requested. The AcpiOsTableOverride interface is now called for 7853each table that is loaded by the subsystem in order to allow the 7854host to override any table it chooses. Previously, only the DSDT 7855could be overridden. Added one new files, tbrsdt.c and 7856tbgetall.c. 7857 7858Fixed a problem with the conversion of internal package objects to 7859external objects (when a package is returned from a control 7860method.) The return buffer length was set to zero instead of the 7861proper length of the package object. 7862 7863Fixed a reported problem with the use of the RefOf and DeRefOf 7864operators when passing reference arguments to control methods. A 7865new type of Reference object is used internally for references 7866produced by the RefOf operator. 7867 7868Added additional error messages in the Resource Manager to explain 7869AE_BAD_DATA errors when they occur during resource parsing. 7870 7871Split the AcpiEnableSubsystem into two primitives to enable a 7872finer granularity initialization sequence. These two calls should 7873be called in this order: AcpiEnableSubsystem (flags), 7874AcpiInitializeObjects (flags). The flags parameter remains the 7875same. 7876 7877 78782) Linux 7879 7880Updated the ACPI utilities module to understand the new style of 7881fully resolved package objects that are now returned from the core 7882subsystem. This eliminates errors of the form: 7883 7884 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7885 acpi_utils-0430 [145] acpi_evaluate_reference: 7886 Invalid element in package (not a device reference) 7887 7888The method evaluation utility uses the new buffer allocation 7889scheme instead of calling AcpiEvaluate Object twice. 7890 7891Added support for ECDT. This allows the use of the Embedded 7892 7893Controller before the namespace has been fully initialized, which 7894is necessary for ACPI 2.0 support, and for some laptops to 7895initialize properly. (Laptops using ECDT are still rare, so only 7896limited testing was performed of the added functionality.) 7897 7898Fixed memory leaks in the EC driver. 7899 7900Eliminated a brittle code structure in acpi_bus_init(). 7901 7902Eliminated the acpi_evaluate() helper function in utils.c. It is 7903no longer needed since acpi_evaluate_object can optionally 7904allocate memory for the return object. 7905 7906Implemented fix for keyboard hang when getting battery readings on 7907some systems (Stephen White) 7908 7909PCI IRQ routing update (Dominik Brodowski) 7910 7911Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7912support 7913 7914---------------------------------------- 791511 June 2002. Summary of changes for this release. 7916 7917 79181) ACPI CA Core Subsystem Version 20020611: 7919 7920Fixed a reported problem where constants such as Zero and One 7921appearing within _PRT packages were not handled correctly within 7922the resource manager code. Originally reported against the ASL 7923compiler because the code generator now optimizes integers to 7924their minimal AML representation (i.e. AML constants if possible.) 7925The _PRT code now handles all AML constant opcodes correctly 7926(Zero, One, Ones, Revision). 7927 7928Fixed a problem with the Concatenate operator in the AML 7929interpreter where a buffer result object was incorrectly marked as 7930not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7931 7932All package sub-objects are now fully resolved before they are 7933returned from the external ACPI interfaces. This means that name 7934strings are resolved to object handles, and constant operators 7935(Zero, One, Ones, Revision) are resolved to Integers. 7936 7937Implemented immediate resolution of the AML Constant opcodes 7938(Zero, One, Ones, Revision) to Integer objects upon detection 7939within the AML stream. This has simplified and reduced the 7940generated code size of the subsystem by eliminating about 10 7941switch statements for these constants (which previously were 7942contained in Reference objects.) The complicating issues are that 7943the Zero opcode is used as a "placeholder" for unspecified 7944optional target operands and stores to constants are defined to be 7945no-ops. 7946 7947Code and Data Size: Current core subsystem library sizes are shown 7948below. These are the code and data sizes for the acpica.lib 7949produced by the Microsoft Visual C++ 6.0 compiler, and these 7950values do not include any ACPI driver or OSPM code. The debug 7951version of the code includes the debug output trace mechanism and 7952has a larger code and data size. Note that these values will vary 7953depending on the efficiency of the compiler and the compiler 7954options used during generation. 7955 7956 Previous Release 7957 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7958 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7959 Current Release: 7960 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7961 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7962 7963 79642) Linux 7965 7966 7967Added preliminary support for obtaining _TRA data for PCI root 7968bridges (Bjorn Helgaas). 7969 7970 79713) iASL Compiler Version X2046: 7972 7973Fixed a problem where the "_DDN" reserved name was defined to be a 7974control method with one argument. There are no arguments, and 7975_DDN does not have to be a control method. 7976 7977Fixed a problem with the Linux version of the compiler where the 7978source lines printed with error messages were the wrong lines. 7979This turned out to be the "LF versus CR/LF" difference between 7980Windows and Unix. This appears to be the longstanding issue 7981concerning listing output and error messages. 7982 7983Fixed a problem with the Linux version of compiler where opcode 7984names within error messages were wrong. This was caused by a 7985slight difference in the output of the Flex tool on Linux versus 7986Windows. 7987 7988Fixed a problem with the Linux compiler where the hex output files 7989contained some garbage data caused by an internal buffer overrun. 7990 7991 7992---------------------------------------- 799317 May 2002. Summary of changes for this release. 7994 7995 79961) ACPI CA Core Subsystem Version 20020517: 7997 7998Implemented a workaround to an BIOS bug discovered on the HP 7999OmniBook where the FADT revision number and the table size are 8000inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 8001behavior is to fallback to using only the ACPI 1.0 fields of the 8002FADT if the table is too small to be a ACPI 2.0 table as claimed 8003by the revision number. Although this is a BIOS bug, this is a 8004case where the workaround is simple enough and with no side 8005effects, so it seemed prudent to add it. A warning message is 8006issued, however. 8007 8008Implemented minimum size checks for the fixed-length ACPI tables - 8009- the FADT and FACS, as well as consistency checks between the 8010revision number and the table size. 8011 8012Fixed a reported problem in the table override support where the 8013new table pointer was incorrectly treated as a physical address 8014instead of a logical address. 8015 8016Eliminated the use of the AE_AML_ERROR exception and replaced it 8017with more descriptive codes. 8018 8019Fixed a problem where an exception would occur if an ASL Field was 8020defined with no named Field Units underneath it (used by some 8021index fields). 8022 8023Code and Data Size: Current core subsystem library sizes are shown 8024below. These are the code and data sizes for the acpica.lib 8025produced by the Microsoft Visual C++ 6.0 compiler, and these 8026values do not include any ACPI driver or OSPM code. The debug 8027version of the code includes the debug output trace mechanism and 8028has a larger code and data size. Note that these values will vary 8029depending on the efficiency of the compiler and the compiler 8030options used during generation. 8031 8032 Previous Release 8033 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8034 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8035 Current Release: 8036 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 8037 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 8038 8039 8040 80412) Linux 8042 8043Much work done on ACPI init (MADT and PCI IRQ routing support). 8044(Paul D. and Dominik Brodowski) 8045 8046Fix PCI IRQ-related panic on boot (Sam Revitch) 8047 8048Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 8049 8050Fix "MHz" typo (Dominik Brodowski) 8051 8052Fix RTC year 2000 issue (Dominik Brodowski) 8053 8054Preclude multiple button proc entries (Eric Brunet) 8055 8056Moved arch-specific code out of include/platform/aclinux.h 8057 80583) iASL Compiler Version X2044: 8059 8060Implemented error checking for the string used in the EISAID macro 8061(Usually used in the definition of the _HID object.) The code now 8062strictly enforces the PnP format - exactly 7 characters, 3 8063uppercase letters and 4 hex digits. 8064 8065If a raw string is used in the definition of the _HID object 8066(instead of the EISAID macro), the string must contain all 8067alphanumeric characters (e.g., "*PNP0011" is not allowed because 8068of the asterisk.) 8069 8070Implemented checking for invalid use of ACPI reserved names for 8071most of the name creation operators (Name, Device, Event, Mutex, 8072OperationRegion, PowerResource, Processor, and ThermalZone.) 8073Previously, this check was only performed for control methods. 8074 8075Implemented an additional check on the Name operator to emit an 8076error if a reserved name that must be implemented in ASL as a 8077control method is used. We know that a reserved name must be a 8078method if it is defined with input arguments. 8079 8080The warning emitted when a namespace object reference is not found 8081during the cross reference phase has been changed into an error. 8082The "External" directive should be used for names defined in other 8083modules. 8084 8085 80864) Tools and Utilities 8087 8088The 16-bit tools (adump16 and aexec16) have been regenerated and 8089tested. 8090 8091Fixed a problem with the output of both acpidump and adump16 where 8092the indentation of closing parentheses and brackets was not 8093 8094aligned properly with the parent block. 8095 8096 8097---------------------------------------- 809803 May 2002. Summary of changes for this release. 8099 8100 81011) ACPI CA Core Subsystem Version 20020503: 8102 8103Added support a new OSL interface that allows the host operating 8104 8105system software to override the DSDT found in the firmware - 8106AcpiOsTableOverride. With this interface, the OSL can examine the 8107version of the firmware DSDT and replace it with a different one 8108if desired. 8109 8110Added new external interfaces for accessing ACPI registers from 8111device drivers and other system software - AcpiGetRegister and 8112AcpiSetRegister. This was simply an externalization of the 8113existing AcpiHwBitRegister interfaces. 8114 8115Fixed a regression introduced in the previous build where the 8116ASL/AML CreateField operator always returned an error, 8117"destination must be a NS Node". 8118 8119Extended the maximum time (before failure) to successfully enable 8120ACPI mode to 3 seconds. 8121 8122Code and Data Size: Current core subsystem library sizes are shown 8123below. These are the code and data sizes for the acpica.lib 8124produced by the Microsoft Visual C++ 6.0 compiler, and these 8125values do not include any ACPI driver or OSPM code. The debug 8126version of the code includes the debug output trace mechanism and 8127has a larger code and data size. Note that these values will vary 8128depending on the efficiency of the compiler and the compiler 8129options used during generation. 8130 8131 Previous Release 8132 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8133 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8134 Current Release: 8135 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8136 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8137 8138 81392) Linux 8140 8141Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8142free. While 3 out of 4 of our in-house systems work fine, the last 8143one still hangs when testing the LAPIC timer. 8144 8145Renamed many files in 2.5 kernel release to omit "acpi_" from the 8146name. 8147 8148Added warning on boot for Presario 711FR. 8149 8150Sleep improvements (Pavel Machek) 8151 8152ACPI can now be built without CONFIG_PCI enabled. 8153 8154IA64: Fixed memory map functions (JI Lee) 8155 8156 81573) iASL Compiler Version X2043: 8158 8159Added support to allow the compiler to be integrated into the MS 8160VC++ development environment for one-button compilation of single 8161files or entire projects -- with error-to-source-line mapping. 8162 8163Implemented support for compile-time constant folding for the 8164Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8165specification. This allows the ASL writer to use expressions 8166instead of Integer/Buffer/String constants in terms that must 8167evaluate to constants at compile time and will also simplify the 8168emitted AML in any such sub-expressions that can be folded 8169(evaluated at compile-time.) This increases the size of the 8170compiler significantly because a portion of the ACPI CA AML 8171interpreter is included within the compiler in order to pre- 8172evaluate constant expressions. 8173 8174 8175Fixed a problem with the "Unicode" ASL macro that caused the 8176compiler to fault. (This macro is used in conjunction with the 8177_STR reserved name.) 8178 8179Implemented an AML opcode optimization to use the Zero, One, and 8180Ones opcodes where possible to further reduce the size of integer 8181constants and thus reduce the overall size of the generated AML 8182code. 8183 8184Implemented error checking for new reserved terms for ACPI version 81852.0A. 8186 8187Implemented the -qr option to display the current list of ACPI 8188reserved names known to the compiler. 8189 8190Implemented the -qc option to display the current list of ASL 8191operators that are allowed within constant expressions and can 8192therefore be folded at compile time if the operands are constants. 8193 8194 81954) Documentation 8196 8197Updated the Programmer's Reference for new interfaces, data types, 8198and memory allocation model options. 8199 8200Updated the iASL Compiler User Reference to apply new format and 8201add information about new features and options. 8202 8203---------------------------------------- 820419 April 2002. Summary of changes for this release. 8205 82061) ACPI CA Core Subsystem Version 20020419: 8207 8208The source code base for the Core Subsystem has been completely 8209cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8210versions. The Lint option files used are included in the 8211/acpi/generate/lint directory. 8212 8213Implemented enhanced status/error checking across the entire 8214Hardware manager subsystem. Any hardware errors (reported from 8215the OSL) are now bubbled up and will abort a running control 8216method. 8217 8218 8219Fixed a problem where the per-ACPI-table integer width (32 or 64) 8220was stored only with control method nodes, causing a fault when 8221non-control method code was executed during table loading. The 8222solution implemented uses a global variable to indicate table 8223width across the entire ACPI subsystem. Therefore, ACPI CA does 8224not support mixed integer widths across different ACPI tables 8225(DSDT, SSDT). 8226 8227Fixed a problem where NULL extended fields (X fields) in an ACPI 82282.0 ACPI FADT caused the table load to fail. Although the 8229existing ACPI specification is a bit fuzzy on this topic, the new 8230behavior is to fall back on a ACPI 1.0 field if the corresponding 8231ACPI 2.0 X field is zero (even though the table revision indicates 8232a full ACPI 2.0 table.) The ACPI specification will be updated to 8233clarify this issue. 8234 8235Fixed a problem with the SystemMemory operation region handler 8236where memory was always accessed byte-wise even if the AML- 8237specified access width was larger than a byte. This caused 8238problems on systems with memory-mapped I/O. Memory is now 8239accessed with the width specified. On systems that do not support 8240non-aligned transfers, a check is made to guarantee proper address 8241alignment before proceeding in order to avoid an AML-caused 8242alignment fault within the kernel. 8243 8244 8245Fixed a problem with the ExtendedIrq resource where only one byte 8246of the 4-byte Irq field was extracted. 8247 8248Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8249function was out of date and required a rewrite. 8250 8251Code and Data Size: Current core subsystem library sizes are shown 8252below. These are the code and data sizes for the acpica.lib 8253produced by the Microsoft Visual C++ 6.0 compiler, and these 8254values do not include any ACPI driver or OSPM code. The debug 8255version of the code includes the debug output trace mechanism and 8256has a larger code and data size. Note that these values will vary 8257depending on the efficiency of the compiler and the compiler 8258options used during generation. 8259 8260 Previous Release 8261 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8262 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8263 Current Release: 8264 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8265 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8266 8267 82682) Linux 8269 8270PCI IRQ routing fixes (Dominik Brodowski) 8271 8272 82733) iASL Compiler Version X2042: 8274 8275Implemented an additional compile-time error check for a field 8276unit whose size + minimum access width would cause a run-time 8277access beyond the end-of-region. Previously, only the field size 8278itself was checked. 8279 8280The Core subsystem and iASL compiler now share a common parse 8281object in preparation for compile-time evaluation of the type 82823/4/5 ASL operators. 8283 8284 8285---------------------------------------- 8286Summary of changes for this release: 03_29_02 8287 82881) ACPI CA Core Subsystem Version 20020329: 8289 8290Implemented support for late evaluation of TermArg operands to 8291Buffer and Package objects. This allows complex expressions to be 8292used in the declarations of these object types. 8293 8294Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 82951.0, if the field was larger than 32 bits, it was returned as a 8296buffer - otherwise it was returned as an integer. In ACPI 2.0, 8297the field is returned as a buffer only if the field is larger than 829864 bits. The TableRevision is now considered when making this 8299conversion to avoid incompatibility with existing ASL code. 8300 8301Implemented logical addressing for AcpiOsGetRootPointer. This 8302allows an RSDP with either a logical or physical address. With 8303this support, the host OS can now override all ACPI tables with 8304one logical RSDP. Includes implementation of "typed" pointer 8305support to allow a common data type for both physical and logical 8306pointers internally. This required a change to the 8307AcpiOsGetRootPointer interface. 8308 8309Implemented the use of ACPI 2.0 Generic Address Structures for all 8310GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8311mapped I/O for these ACPI features. 8312 8313Initialization now ignores not only non-required tables (All 8314tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8315not validate the table headers of unrecognized tables. 8316 8317Fixed a problem where a notify handler could only be 8318installed/removed on an object of type Device. All "notify" 8319 8320objects are now supported -- Devices, Processor, Power, and 8321Thermal. 8322 8323Removed most verbosity from the ACPI_DB_INFO debug level. Only 8324critical information is returned when this debug level is enabled. 8325 8326Code and Data Size: Current core subsystem library sizes are shown 8327below. These are the code and data sizes for the acpica.lib 8328produced by the Microsoft Visual C++ 6.0 compiler, and these 8329values do not include any ACPI driver or OSPM code. The debug 8330version of the code includes the debug output trace mechanism and 8331has a larger code and data size. Note that these values will vary 8332depending on the efficiency of the compiler and the compiler 8333options used during generation. 8334 8335 Previous Release 8336 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8337 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8338 Current Release: 8339 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8340 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8341 8342 83432) Linux: 8344 8345The processor driver (acpi_processor.c) now fully supports ACPI 83462.0-based processor performance control (e.g. Intel(R) 8347SpeedStep(TM) technology) Note that older laptops that only have 8348the Intel "applet" interface are not supported through this. The 8349'limit' and 'performance' interface (/proc) are fully functional. 8350[Note that basic policy for controlling performance state 8351transitions will be included in the next version of ospmd.] The 8352idle handler was modified to more aggressively use C2, and PIIX4 8353errata handling underwent a complete overhaul (big thanks to 8354Dominik Brodowski). 8355 8356Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8357based devices in the ACPI namespace are now dynamically bound 8358(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8359This allows, among other things, ACPI to resolve bus numbers for 8360subordinate PCI bridges. 8361 8362Enhanced PCI IRQ routing to get the proper bus number for _PRT 8363entries defined underneath PCI bridges. 8364 8365Added IBM 600E to bad bios list due to invalid _ADR value for 8366PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8367 8368In the process of adding full MADT support (e.g. IOAPIC) for IA32 8369(acpi.c, mpparse.c) -- stay tuned. 8370 8371Added back visual differentiation between fixed-feature and 8372control-method buttons in dmesg. Buttons are also subtyped (e.g. 8373button/power/PWRF) to simplify button identification. 8374 8375We no longer use -Wno-unused when compiling debug. Please ignore 8376any "_THIS_MODULE defined but not used" messages. 8377 8378Can now shut down the system using "magic sysrq" key. 8379 8380 83813) iASL Compiler version 2041: 8382 8383Fixed a problem where conversion errors for hex/octal/decimal 8384constants were not reported. 8385 8386Implemented a fix for the General Register template Address field. 8387This field was 8 bits when it should be 64. 8388 8389Fixed a problem where errors/warnings were no longer being emitted 8390within the listing output file. 8391 8392Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8393exactly 4 characters, alphanumeric only. 8394 8395 8396 8397 8398---------------------------------------- 8399Summary of changes for this release: 03_08_02 8400 8401 84021) ACPI CA Core Subsystem Version 20020308: 8403 8404Fixed a problem with AML Fields where the use of the "AccessAny" 8405keyword could cause an interpreter error due to attempting to read 8406or write beyond the end of the parent Operation Region. 8407 8408Fixed a problem in the SystemMemory Operation Region handler where 8409an attempt was made to map memory beyond the end of the region. 8410This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8411errors on some Linux systems. 8412 8413Fixed a problem where the interpreter/namespace "search to root" 8414algorithm was not functioning for some object types. Relaxed the 8415internal restriction on the search to allow upsearches for all 8416external object types as well as most internal types. 8417 8418 84192) Linux: 8420 8421We now use safe_halt() macro versus individual calls to sti | hlt. 8422 8423Writing to the processor limit interface should now work. "echo 1" 8424will increase the limit, 2 will decrease, and 0 will reset to the 8425 8426default. 8427 8428 84293) ASL compiler: 8430 8431Fixed segfault on Linux version. 8432 8433 8434---------------------------------------- 8435Summary of changes for this release: 02_25_02 8436 84371) ACPI CA Core Subsystem: 8438 8439 8440Fixed a problem where the GPE bit masks were not initialized 8441properly, causing erratic GPE behavior. 8442 8443Implemented limited support for multiple calling conventions. The 8444code can be generated with either the VPL (variable parameter 8445list, or "C") convention, or the FPL (fixed parameter list, or 8446"Pascal") convention. The core subsystem is about 3.4% smaller 8447when generated with FPL. 8448 8449 84502) Linux 8451 8452Re-add some /proc/acpi/event functionality that was lost during 8453the rewrite 8454 8455Resolved issue with /proc events for fixed-feature buttons showing 8456up as the system device. 8457 8458Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8459 8460Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8461 8462Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8463 8464Fixed limit interface & usage to fix bugs with passive cooling 8465hysterisis. 8466 8467Restructured PRT support. 8468 8469 8470---------------------------------------- 8471Summary of changes for this label: 02_14_02 8472 8473 84741) ACPI CA Core Subsystem: 8475 8476Implemented support in AcpiLoadTable to allow loading of FACS and 8477FADT tables. 8478 8479Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8480been removed. All 64-bit platforms should be migrated to the ACPI 84812.0 tables. The actbl71.h header has been removed from the source 8482tree. 8483 8484All C macros defined within the subsystem have been prefixed with 8485"ACPI_" to avoid collision with other system include files. 8486 8487Removed the return value for the two AcpiOsPrint interfaces, since 8488it is never used and causes lint warnings for ignoring the return 8489value. 8490 8491Added error checking to all internal mutex acquire and release 8492calls. Although a failure from one of these interfaces is 8493probably a fatal system error, these checks will cause the 8494immediate abort of the currently executing method or interface. 8495 8496Fixed a problem where the AcpiSetCurrentResources interface could 8497fault. This was a side effect of the deployment of the new memory 8498allocation model. 8499 8500Fixed a couple of problems with the Global Lock support introduced 8501in the last major build. The "common" (1.0/2.0) internal FACS was 8502being overwritten with the FACS signature and clobbering the 8503Global Lock pointer. Also, the actual firmware FACS was being 8504unmapped after construction of the "common" FACS, preventing 8505access to the actual Global Lock field within it. The "common" 8506internal FACS is no longer installed as an actual ACPI table; it 8507is used simply as a global. 8508 8509Code and Data Size: Current core subsystem library sizes are shown 8510below. These are the code and data sizes for the acpica.lib 8511produced by the Microsoft Visual C++ 6.0 compiler, and these 8512values do not include any ACPI driver or OSPM code. The debug 8513version of the code includes the debug output trace mechanism and 8514has a larger code and data size. Note that these values will vary 8515depending on the efficiency of the compiler and the compiler 8516options used during generation. 8517 8518 Previous Release (02_07_01) 8519 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8520 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8521 Current Release: 8522 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8523 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8524 8525 85262) Linux 8527 8528Updated Linux-specific code for core macro and OSL interface 8529changes described above. 8530 8531Improved /proc/acpi/event. It now can be opened only once and has 8532proper poll functionality. 8533 8534Fixed and restructured power management (acpi_bus). 8535 8536Only create /proc "view by type" when devices of that class exist. 8537 8538Fixed "charging/discharging" bug (and others) in acpi_battery. 8539 8540Improved thermal zone code. 8541 8542 85433) ASL Compiler, version X2039: 8544 8545 8546Implemented the new compiler restriction on ASL String hex/octal 8547escapes to non-null, ASCII values. An error results if an invalid 8548value is used. (This will require an ACPI 2.0 specification 8549change.) 8550 8551AML object labels that are output to the optional C and ASM source 8552are now prefixed with both the ACPI table signature and table ID 8553to help guarantee uniqueness within a large BIOS project. 8554 8555 8556---------------------------------------- 8557Summary of changes for this label: 02_01_02 8558 85591) ACPI CA Core Subsystem: 8560 8561ACPI 2.0 support is complete in the entire Core Subsystem and the 8562ASL compiler. All new ACPI 2.0 operators are implemented and all 8563other changes for ACPI 2.0 support are complete. With 8564simultaneous code and data optimizations throughout the subsystem, 8565ACPI 2.0 support has been implemented with almost no additional 8566cost in terms of code and data size. 8567 8568Implemented a new mechanism for allocation of return buffers. If 8569the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8570be allocated on behalf of the caller. Consolidated all return 8571buffer validation and allocation to a common procedure. Return 8572buffers will be allocated via the primary OSL allocation interface 8573since it appears that a separate pool is not needed by most users. 8574If a separate pool is required for these buffers, the caller can 8575still use the original mechanism and pre-allocate the buffer(s). 8576 8577Implemented support for string operands within the DerefOf 8578operator. 8579 8580Restructured the Hardware and Event managers to be table driven, 8581simplifying the source code and reducing the amount of generated 8582code. 8583 8584Split the common read/write low-level ACPI register bitfield 8585procedure into a separate read and write, simplifying the code 8586considerably. 8587 8588Obsoleted the AcpiOsCallocate OSL interface. This interface was 8589used only a handful of times and didn't have enough critical mass 8590for a separate interface. Replaced with a common calloc procedure 8591in the core. 8592 8593Fixed a reported problem with the GPE number mapping mechanism 8594that allows GPE1 numbers to be non-contiguous with GPE0. 8595Reorganized the GPE information and shrunk a large array that was 8596originally large enough to hold info for all possible GPEs (256) 8597to simply large enough to hold all GPEs up to the largest GPE 8598number on the machine. 8599 8600Fixed a reported problem with resource structure alignment on 64- 8601bit platforms. 8602 8603Changed the AcpiEnableEvent and AcpiDisableEvent external 8604interfaces to not require any flags for the common case of 8605enabling/disabling a GPE. 8606 8607Implemented support to allow a "Notify" on a Processor object. 8608 8609Most TBDs in comments within the source code have been resolved 8610and eliminated. 8611 8612 8613Fixed a problem in the interpreter where a standalone parent 8614prefix (^) was not handled correctly in the interpreter and 8615debugger. 8616 8617Removed obsolete and unnecessary GPE save/restore code. 8618 8619Implemented Field support in the ASL Load operator. This allows a 8620table to be loaded from a named field, in addition to loading a 8621table directly from an Operation Region. 8622 8623Implemented timeout and handle support in the external Global Lock 8624interfaces. 8625 8626Fixed a problem in the AcpiDump utility where pathnames were no 8627longer being generated correctly during the dump of named objects. 8628 8629Modified the AML debugger to give a full display of if/while 8630predicates instead of just one AML opcode at a time. (The 8631predicate can have several nested ASL statements.) The old method 8632was confusing during single stepping. 8633 8634Code and Data Size: Current core subsystem library sizes are shown 8635below. These are the code and data sizes for the acpica.lib 8636produced by the Microsoft Visual C++ 6.0 compiler, and these 8637values do not include any ACPI driver or OSPM code. The debug 8638version of the code includes the debug output trace mechanism and 8639has a larger code and data size. Note that these values will vary 8640depending on the efficiency of the compiler and the compiler 8641options used during generation. 8642 8643 Previous Release (12_18_01) 8644 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8645 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8646 Current Release: 8647 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8648 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8649 86502) Linux 8651 8652 Implemented fix for PIIX reverse throttling errata (Processor 8653driver) 8654 8655Added new Limit interface (Processor and Thermal drivers) 8656 8657New thermal policy (Thermal driver) 8658 8659Many updates to /proc 8660 8661Battery "low" event support (Battery driver) 8662 8663Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8664 8665IA32 - IA64 initialization unification, no longer experimental 8666 8667Menuconfig options redesigned 8668 86693) ASL Compiler, version X2037: 8670 8671Implemented several new output features to simplify integration of 8672AML code into firmware: 1) Output the AML in C source code with 8673labels for each named ASL object. The original ASL source code 8674is interleaved as C comments. 2) Output the AML in ASM source code 8675with labels and interleaved ASL source. 3) Output the AML in 8676raw hex table form, in either C or ASM. 8677 8678Implemented support for optional string parameters to the 8679LoadTable operator. 8680 8681Completed support for embedded escape sequences within string 8682literals. The compiler now supports all single character escapes 8683as well as the Octal and Hex escapes. Note: the insertion of a 8684null byte into a string literal (via the hex/octal escape) causes 8685the string to be immediately terminated. A warning is issued. 8686 8687Fixed a problem where incorrect AML was generated for the case 8688where an ASL namepath consists of a single parent prefix ( 8689 8690) with no trailing name segments. 8691 8692The compiler has been successfully generated with a 64-bit C 8693compiler. 8694 8695 8696 8697 8698---------------------------------------- 8699Summary of changes for this label: 12_18_01 8700 87011) Linux 8702 8703Enhanced blacklist with reason and severity fields. Any table's 8704signature may now be used to identify a blacklisted system. 8705 8706Call _PIC control method to inform the firmware which interrupt 8707model the OS is using. Turn on any disabled link devices. 8708 8709Cleaned up busmgr /proc error handling (Andreas Dilger) 8710 8711 2) ACPI CA Core Subsystem: 8712 8713Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8714while loop) 8715 8716Completed implementation of the ACPI 2.0 "Continue", 8717"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8718operators. All new ACPI 2.0 operators are now implemented in both 8719the ASL compiler and the AML interpreter. The only remaining ACPI 87202.0 task is support for the String data type in the DerefOf 8721operator. Fixed a problem with AcquireMutex where the status code 8722was lost if the caller had to actually wait for the mutex. 8723 8724Increased the maximum ASL Field size from 64K bits to 4G bits. 8725 8726Completed implementation of the external Global Lock interfaces -- 8727AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8728Handler parameters were added. 8729 8730Completed another pass at removing warnings and issues when 8731compiling with 64-bit compilers. The code now compiles cleanly 8732with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8733add and subtract (diff) macros have changed considerably. 8734 8735 8736Created and deployed a new ACPI_SIZE type that is 64-bits wide on 873764-bit platforms, 32-bits on all others. This type is used 8738wherever memory allocation and/or the C sizeof() operator is used, 8739and affects the OSL memory allocation interfaces AcpiOsAllocate 8740and AcpiOsCallocate. 8741 8742Implemented sticky user breakpoints in the AML debugger. 8743 8744Code and Data Size: Current core subsystem library sizes are shown 8745below. These are the code and data sizes for the acpica.lib 8746produced by the Microsoft Visual C++ 6.0 compiler, and these 8747values do not include any ACPI driver or OSPM code. The debug 8748version of the code includes the debug output trace mechanism and 8749has a larger code and data size. Note that these values will vary 8750depending on the efficiency of the compiler and the compiler 8751options used during generation. 8752 8753 Previous Release (12_05_01) 8754 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8755 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8756 Current Release: 8757 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8758 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8759 8760 3) ASL Compiler, version X2034: 8761 8762Now checks for (and generates an error if detected) the use of a 8763Break or Continue statement without an enclosing While statement. 8764 8765 8766Successfully generated the compiler with the Intel 64-bit C 8767compiler. 8768 8769 ---------------------------------------- 8770Summary of changes for this label: 12_05_01 8771 8772 1) ACPI CA Core Subsystem: 8773 8774The ACPI 2.0 CopyObject operator is fully implemented. This 8775operator creates a new copy of an object (and is also used to 8776bypass the "implicit conversion" mechanism of the Store operator.) 8777 8778The ACPI 2.0 semantics for the SizeOf operator are fully 8779implemented. The change is that performing a SizeOf on a 8780reference object causes an automatic dereference of the object to 8781tha actual value before the size is evaluated. This behavior was 8782undefined in ACPI 1.0. 8783 8784The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8785have been implemented. The interrupt polarity and mode are now 8786independently set. 8787 8788Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8789appearing in Package objects were not properly converted to 8790integers when the internal Package was converted to an external 8791object (via the AcpiEvaluateObject interface.) 8792 8793Fixed a problem with the namespace object deletion mechanism for 8794objects created by control methods. There were two parts to this 8795problem: 1) Objects created during the initialization phase method 8796parse were not being deleted, and 2) The object owner ID mechanism 8797to track objects was broken. 8798 8799Fixed a problem where the use of the ASL Scope operator within a 8800control method would result in an invalid opcode exception. 8801 8802Fixed a problem introduced in the previous label where the buffer 8803length required for the _PRT structure was not being returned 8804correctly. 8805 8806Code and Data Size: Current core subsystem library sizes are shown 8807below. These are the code and data sizes for the acpica.lib 8808produced by the Microsoft Visual C++ 6.0 compiler, and these 8809values do not include any ACPI driver or OSPM code. The debug 8810version of the code includes the debug output trace mechanism and 8811has a larger code and data size. Note that these values will vary 8812depending on the efficiency of the compiler and the compiler 8813options used during generation. 8814 8815 Previous Release (11_20_01) 8816 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8817 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8818 8819 Current Release: 8820 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8821 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8822 8823 2) Linux: 8824 8825Updated all files to apply cleanly against 2.4.16. 8826 8827Added basic PCI Interrupt Routing Table (PRT) support for IA32 8828(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8829version supports both static and dyanmic PRT entries, but dynamic 8830entries are treated as if they were static (not yet 8831reconfigurable). Architecture- specific code to use this data is 8832absent on IA32 but should be available shortly. 8833 8834Changed the initialization sequence to start the ACPI interpreter 8835(acpi_init) prior to initialization of the PCI driver (pci_init) 8836in init/main.c. This ordering is required to support PRT and 8837facilitate other (future) enhancement. A side effect is that the 8838ACPI bus driver and certain device drivers can no longer be loaded 8839as modules. 8840 8841Modified the 'make menuconfig' options to allow PCI Interrupt 8842Routing support to be included without the ACPI Bus and other 8843device drivers. 8844 8845 3) ASL Compiler, version X2033: 8846 8847Fixed some issues with the use of the new CopyObject and 8848DataTableRegion operators. Both are fully functional. 8849 8850 ---------------------------------------- 8851Summary of changes for this label: 11_20_01 8852 8853 20 November 2001. Summary of changes for this release. 8854 8855 1) ACPI CA Core Subsystem: 8856 8857Updated Index support to match ACPI 2.0 semantics. Storing a 8858Integer, String, or Buffer to an Index of a Buffer will store only 8859the least-significant byte of the source to the Indexed buffer 8860byte. Multiple writes are not performed. 8861 8862Fixed a problem where the access type used in an AccessAs ASL 8863operator was not recorded correctly into the field object. 8864 8865Fixed a problem where ASL Event objects were created in a 8866signalled state. Events are now created in an unsignalled state. 8867 8868The internal object cache is now purged after table loading and 8869initialization to reduce the use of dynamic kernel memory -- on 8870the assumption that object use is greatest during the parse phase 8871of the entire table (versus the run-time use of individual control 8872methods.) 8873 8874ACPI 2.0 variable-length packages are now fully operational. 8875 8876Code and Data Size: Code and Data optimizations have permitted new 8877feature development with an actual reduction in the library size. 8878Current core subsystem library sizes are shown below. These are 8879the code and data sizes for the acpica.lib produced by the 8880Microsoft Visual C++ 6.0 compiler, and these values do not include 8881any ACPI driver or OSPM code. The debug version of the code 8882includes the debug output trace mechanism and has a larger code 8883and data size. Note that these values will vary depending on the 8884efficiency of the compiler and the compiler options used during 8885generation. 8886 8887 Previous Release (11_09_01): 8888 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8889 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8890 8891 Current Release: 8892 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8893 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8894 8895 2) Linux: 8896 8897Enhanced the ACPI boot-time initialization code to allow the use 8898of Local APIC tables for processor enumeration on IA-32, and to 8899pave the way for a fully MPS-free boot (on SMP systems) in the 8900near future. This functionality replaces 8901arch/i386/kernel/acpitables.c, which was introduced in an earlier 89022.4.15-preX release. To enable this feature you must add 8903"acpi_boot=on" to the kernel command line -- see the help entry 8904for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8905the works... 8906 8907Restructured the configuration options to allow boot-time table 8908parsing support without inclusion of the ACPI Interpreter (and 8909other) code. 8910 8911NOTE: This release does not include fixes for the reported events, 8912power-down, and thermal passive cooling issues (coming soon). 8913 8914 3) ASL Compiler: 8915 8916Added additional typechecking for Fields within restricted access 8917Operation Regions. All fields within EC and CMOS regions must be 8918declared with ByteAcc. All fields withing SMBus regions must be 8919declared with the BufferAcc access type. 8920 8921Fixed a problem where the listing file output of control methods 8922no longer interleaved the actual AML code with the ASL source 8923code. 8924 8925 8926 8927 8928---------------------------------------- 8929Summary of changes for this label: 11_09_01 8930 89311) ACPI CA Core Subsystem: 8932 8933Implemented ACPI 2.0-defined support for writes to fields with a 8934Buffer, String, or Integer source operand that is smaller than the 8935target field. In these cases, the source operand is zero-extended 8936to fill the target field. 8937 8938Fixed a problem where a Field starting bit offset (within the 8939parent operation region) was calculated incorrectly if the 8940 8941alignment of the field differed from the access width. This 8942affected CreateWordField, CreateDwordField, CreateQwordField, and 8943possibly other fields that use the "AccessAny" keyword. 8944 8945Fixed a problem introduced in the 11_02_01 release where indirect 8946stores through method arguments did not operate correctly. 8947 89482) Linux: 8949 8950Implemented boot-time ACPI table parsing support 8951(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8952facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8953legacy BIOS interfaces (e.g. MPS) for the configuration of system 8954processors, memory, and interrupts during setup_arch(). Note that 8955this patch does not include the required architecture-specific 8956changes required to apply this information -- subsequent patches 8957will be posted for both IA32 and IA64 to achieve this. 8958 8959Added low-level sleep support for IA32 platforms, courtesy of Pat 8960Mochel. This allows IA32 systems to transition to/from various 8961sleeping states (e.g. S1, S3), although the lack of a centralized 8962driver model and power-manageable drivers will prevent its 8963(successful) use on most systems. 8964 8965Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8966submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8967tables" option, etc. 8968 8969Increased the default timeout for the EC driver from 1ms to 10ms 8970(1000 cycles of 10us) to try to address AE_TIME errors during EC 8971transactions. 8972 8973 ---------------------------------------- 8974Summary of changes for this label: 11_02_01 8975 89761) ACPI CA Core Subsystem: 8977 8978ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8979(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8980implemented. 8981 8982OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8983changes to support ACPI 2.0 Qword field access. Read/Write 8984PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8985accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8986the value parameter for the address space handler interface is now 8987an ACPI_INTEGER. OSL implementations of these interfaces must now 8988handle the case where the Width parameter is 64. 8989 8990Index Fields: Fixed a problem where unaligned bit assembly and 8991disassembly for IndexFields was not supported correctly. 8992 8993Index and Bank Fields: Nested Index and Bank Fields are now 8994supported. During field access, a check is performed to ensure 8995that the value written to an Index or Bank register is not out of 8996the range of the register. The Index (or Bank) register is 8997written before each access to the field data. Future support will 8998include allowing individual IndexFields to be wider than the 8999DataRegister width. 9000 9001Fields: Fixed a problem where the AML interpreter was incorrectly 9002attempting to write beyond the end of a Field/OpRegion. This was 9003a boundary case that occurred when a DWORD field was written to a 9004BYTE access OpRegion, forcing multiple writes and causing the 9005interpreter to write one datum too many. 9006 9007Fields: Fixed a problem with Field/OpRegion access where the 9008starting bit address of a field was incorrectly calculated if the 9009current access type was wider than a byte (WordAcc, DwordAcc, or 9010QwordAcc). 9011 9012Fields: Fixed a problem where forward references to individual 9013FieldUnits (individual Field names within a Field definition) were 9014not resolved during the AML table load. 9015 9016Fields: Fixed a problem where forward references from a Field 9017definition to the parent Operation Region definition were not 9018resolved during the AML table load. 9019 9020Fields: Duplicate FieldUnit names within a scope are now detected 9021during AML table load. 9022 9023Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 9024returned an incorrect name for the root node. 9025 9026Code and Data Size: Code and Data optimizations have permitted new 9027feature development with an actual reduction in the library size. 9028Current core subsystem library sizes are shown below. These are 9029the code and data sizes for the acpica.lib produced by the 9030Microsoft Visual C++ 6.0 compiler, and these values do not include 9031any ACPI driver or OSPM code. The debug version of the code 9032includes the debug output trace mechanism and has a larger code 9033and data size. Note that these values will vary depending on the 9034efficiency of the compiler and the compiler options used during 9035generation. 9036 9037 Previous Release (10_18_01): 9038 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9039 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9040 9041 Current Release: 9042 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 9043 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 9044 9045 2) Linux: 9046 9047Improved /proc processor output (Pavel Machek) Re-added 9048MODULE_LICENSE("GPL") to all modules. 9049 9050 3) ASL Compiler version X2030: 9051 9052Duplicate FieldUnit names within a scope are now detected and 9053flagged as errors. 9054 9055 4) Documentation: 9056 9057Programmer Reference updated to reflect OSL and address space 9058handler interface changes described above. 9059 9060---------------------------------------- 9061Summary of changes for this label: 10_18_01 9062 9063ACPI CA Core Subsystem: 9064 9065Fixed a problem with the internal object reference count mechanism 9066that occasionally caused premature object deletion. This resolves 9067all of the outstanding problem reports where an object is deleted 9068in the middle of an interpreter evaluation. Although this problem 9069only showed up in rather obscure cases, the solution to the 9070problem involved an adjustment of all reference counts involving 9071objects attached to namespace nodes. 9072 9073Fixed a problem with Field support in the interpreter where 9074writing to an aligned field whose length is an exact multiple (2 9075or greater) of the field access granularity would cause an attempt 9076to write beyond the end of the field. 9077 9078The top level AML opcode execution functions within the 9079interpreter have been renamed with a more meaningful and 9080consistent naming convention. The modules exmonad.c and 9081exdyadic.c were eliminated. New modules are exoparg1.c, 9082exoparg2.c, exoparg3.c, and exoparg6.c. 9083 9084Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9085 9086Fixed a problem where the AML debugger was causing some internal 9087objects to not be deleted during subsystem termination. 9088 9089Fixed a problem with the external AcpiEvaluateObject interface 9090where the subsystem would fault if the named object to be 9091evaluated refered to a constant such as Zero, Ones, etc. 9092 9093Fixed a problem with IndexFields and BankFields where the 9094subsystem would fault if the index, data, or bank registers were 9095not defined in the same scope as the field itself. 9096 9097Added printf format string checking for compilers that support 9098this feature. Corrected more than 50 instances of issues with 9099format specifiers within invocations of ACPI_DEBUG_PRINT 9100throughout the core subsystem code. 9101 9102The ASL "Revision" operator now returns the ACPI support level 9103implemented in the core - the value "2" since the ACPI 2.0 support 9104is more than 50% implemented. 9105 9106Enhanced the output of the AML debugger "dump namespace" command 9107to output in a more human-readable form. 9108 9109Current core subsystem library code sizes are shown below. These 9110 9111are the code and data sizes for the acpica.lib produced by the 9112Microsoft Visual C++ 6.0 compiler, and these values do not include 9113any ACPI driver or OSPM code. The debug version of the code 9114includes the full debug trace mechanism -- leading to a much 9115 9116larger code and data size. Note that these values will vary 9117depending on the efficiency of the compiler and the compiler 9118options used during generation. 9119 9120 Previous Label (09_20_01): 9121 Non-Debug Version: 65K Code, 5K Data, 70K Total 9122 Debug Version: 138K Code, 58K Data, 196K Total 9123 9124 This Label: 9125 9126 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9127 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9128 9129Linux: 9130 9131Implemented a "Bad BIOS Blacklist" to track machines that have 9132known ASL/AML problems. 9133 9134Enhanced the /proc interface for the thermal zone driver and added 9135support for _HOT (the critical suspend trip point). The 'info' 9136file now includes threshold/policy information, and allows setting 9137of _SCP (cooling preference) and _TZP (polling frequency) values 9138to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9139frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9140preference to the passive/quiet mode (if supported by the ASL). 9141 9142Implemented a workaround for a gcc bug that resuted in an OOPs 9143when loading the control method battery driver. 9144 9145 ---------------------------------------- 9146Summary of changes for this label: 09_20_01 9147 9148 ACPI CA Core Subsystem: 9149 9150The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9151modified to allow individual GPE levels to be flagged as wake- 9152enabled (i.e., these GPEs are to remain enabled when the platform 9153sleeps.) 9154 9155The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9156support wake-enabled GPEs. This means that upon entering the 9157sleep state, all GPEs that are not wake-enabled are disabled. 9158When leaving the sleep state, these GPEs are reenabled. 9159 9160A local double-precision divide/modulo module has been added to 9161enhance portability to OS kernels where a 64-bit math library is 9162not available. The new module is "utmath.c". 9163 9164Several optimizations have been made to reduce the use of CPU 9165stack. Originally over 2K, the maximum stack usage is now below 91662K at 1860 bytes (1.82k) 9167 9168Fixed a problem with the AcpiGetFirmwareTable interface where the 9169root table pointer was not mapped into a logical address properly. 9170 9171Fixed a problem where a NULL pointer was being dereferenced in the 9172interpreter code for the ASL Notify operator. 9173 9174Fixed a problem where the use of the ASL Revision operator 9175returned an error. This operator now returns the current version 9176of the ACPI CA core subsystem. 9177 9178Fixed a problem where objects passed as control method parameters 9179to AcpiEvaluateObject were always deleted at method termination. 9180However, these objects may end up being stored into the namespace 9181by the called method. The object reference count mechanism was 9182applied to these objects instead of a force delete. 9183 9184Fixed a problem where static strings or buffers (contained in the 9185AML code) that are declared as package elements within the ASL 9186code could cause a fault because the interpreter would attempt to 9187delete them. These objects are now marked with the "static 9188object" flag to prevent any attempt to delete them. 9189 9190Implemented an interpreter optimization to use operands directly 9191from the state object instead of extracting the operands to local 9192variables. This reduces stack use and code size, and improves 9193performance. 9194 9195The module exxface.c was eliminated as it was an unnecessary extra 9196layer of code. 9197 9198Current core subsystem library code sizes are shown below. These 9199are the code and data sizes for the acpica.lib produced by the 9200Microsoft Visual C++ 6.0 compiler, and these values do not include 9201any ACPI driver or OSPM code. The debug version of the code 9202includes the full debug trace mechanism -- leading to a much 9203larger code and data size. Note that these values will vary 9204depending on the efficiency of the compiler and the compiler 9205options used during generation. 9206 9207 Non-Debug Version: 65K Code, 5K Data, 70K Total 9208(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9209Total (Previously 195K) 9210 9211Linux: 9212 9213Support for ACPI 2.0 64-bit integers has been added. All ACPI 9214Integer objects are now 64 bits wide 9215 9216All Acpi data types and structures are now in lower case. Only 9217Acpi macros are upper case for differentiation. 9218 9219 Documentation: 9220 9221Changes to the external interfaces as described above. 9222 9223 ---------------------------------------- 9224Summary of changes for this label: 08_31_01 9225 9226 ACPI CA Core Subsystem: 9227 9228A bug with interpreter implementation of the ASL Divide operator 9229was found and fixed. The implicit function return value (not the 9230explicit store operands) was returning the remainder instead of 9231the quotient. This was a longstanding bug and it fixes several 9232known outstanding issues on various platforms. 9233 9234The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9235been further optimized for size. There are 700 invocations of the 9236DEBUG_PRINT macro alone, so each optimization reduces the size of 9237the debug version of the subsystem significantly. 9238 9239A stack trace mechanism has been implemented. The maximum stack 9240usage is about 2K on 32-bit platforms. The debugger command "stat 9241stack" will display the current maximum stack usage. 9242 9243All public symbols and global variables within the subsystem are 9244now prefixed with the string "Acpi". This keeps all of the 9245symbols grouped together in a kernel map, and avoids conflicts 9246with other kernel subsystems. 9247 9248Most of the internal fixed lookup tables have been moved into the 9249code segment via the const operator. 9250 9251Several enhancements have been made to the interpreter to both 9252reduce the code size and improve performance. 9253 9254Current core subsystem library code sizes are shown below. These 9255are the code and data sizes for the acpica.lib produced by the 9256Microsoft Visual C++ 6.0 compiler, and these values do not include 9257any ACPI driver or OSPM code. The debug version of the code 9258includes the full debug trace mechanism which contains over 700 9259invocations of the DEBUG_PRINT macro, 500 function entry macro 9260invocations, and over 900 function exit macro invocations -- 9261leading to a much larger code and data size. Note that these 9262values will vary depending on the efficiency of the compiler and 9263the compiler options used during generation. 9264 9265 Non-Debug Version: 64K Code, 5K Data, 69K Total 9266Debug Version: 137K Code, 58K Data, 195K Total 9267 9268 Linux: 9269 9270Implemented wbinvd() macro, pending a kernel-wide definition. 9271 9272Fixed /proc/acpi/event to handle poll() and short reads. 9273 9274 ASL Compiler, version X2026: 9275 9276Fixed a problem introduced in the previous label where the AML 9277 9278code emitted for package objects produced packages with zero 9279length. 9280 9281 ---------------------------------------- 9282Summary of changes for this label: 08_16_01 9283 9284ACPI CA Core Subsystem: 9285 9286The following ACPI 2.0 ASL operators have been implemented in the 9287AML interpreter (These are already supported by the Intel ASL 9288compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9289ToBuffer. Support for 64-bit AML constants is implemented in the 9290AML parser, debugger, and disassembler. 9291 9292The internal memory tracking mechanism (leak detection code) has 9293been upgraded to reduce the memory overhead (a separate tracking 9294block is no longer allocated for each memory allocation), and now 9295supports all of the internal object caches. 9296 9297The data structures and code for the internal object caches have 9298been coelesced and optimized so that there is a single cache and 9299memory list data structure and a single group of functions that 9300implement generic cache management. This has reduced the code 9301size in both the debug and release versions of the subsystem. 9302 9303The DEBUG_PRINT macro(s) have been optimized for size and replaced 9304by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9305different, because it generates a single call to an internal 9306function. This results in a savings of about 90 bytes per 9307invocation, resulting in an overall code and data savings of about 930816% in the debug version of the subsystem. 9309 9310 Linux: 9311 9312Fixed C3 disk corruption problems and re-enabled C3 on supporting 9313machines. 9314 9315Integrated low-level sleep code by Patrick Mochel. 9316 9317Further tweaked source code Linuxization. 9318 9319Other minor fixes. 9320 9321 ASL Compiler: 9322 9323Support for ACPI 2.0 variable length packages is fixed/completed. 9324 9325Fixed a problem where the optional length parameter for the ACPI 93262.0 ToString operator. 9327 9328Fixed multiple extraneous error messages when a syntax error is 9329detected within the declaration line of a control method. 9330 9331 ---------------------------------------- 9332Summary of changes for this label: 07_17_01 9333 9334ACPI CA Core Subsystem: 9335 9336Added a new interface named AcpiGetFirmwareTable to obtain any 9337ACPI table via the ACPI signature. The interface can be called at 9338any time during kernel initialization, even before the kernel 9339virtual memory manager is initialized and paging is enabled. This 9340allows kernel subsystems to obtain ACPI tables very early, even 9341before the ACPI CA subsystem is initialized. 9342 9343Fixed a problem where Fields defined with the AnyAcc attribute 9344could be resolved to the incorrect address under the following 9345conditions: 1) the field width is larger than 8 bits and 2) the 9346parent operation region is not defined on a DWORD boundary. 9347 9348Fixed a problem where the interpreter is not being locked during 9349namespace initialization (during execution of the _INI control 9350methods), causing an error when an attempt is made to release it 9351later. 9352 9353ACPI 2.0 support in the AML Interpreter has begun and will be 9354ongoing throughout the rest of this year. In this label, The Mod 9355operator is implemented. 9356 9357Added a new data type to contain full PCI addresses named 9358ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9359and Function values. 9360 9361 Linux: 9362 9363Enhanced the Linux version of the source code to change most 9364capitalized ACPI type names to lowercase. For example, all 9365instances of ACPI_STATUS are changed to acpi_status. This will 9366result in a large diff, but the change is strictly cosmetic and 9367aligns the CA code closer to the Linux coding standard. 9368 9369OSL Interfaces: 9370 9371The interfaces to the PCI configuration space have been changed to 9372add the PCI Segment number and to split the single 32-bit combined 9373DeviceFunction field into two 16-bit fields. This was 9374accomplished by moving the four values that define an address in 9375PCI configuration space (segment, bus, device, and function) to 9376the new ACPI_PCI_ID structure. 9377 9378The changes to the PCI configuration space interfaces led to a 9379reexamination of the complete set of address space access 9380interfaces for PCI, I/O, and Memory. The previously existing 18 9381interfaces have proven difficult to maintain (any small change 9382must be propagated across at least 6 interfaces) and do not easily 9383allow for future expansion to 64 bits if necessary. Also, on some 9384systems, it would not be appropriate to demultiplex the access 9385width (8, 16, 32,or 64) before calling the OSL if the 9386corresponding native OS interfaces contain a similar access width 9387parameter. For these reasons, the 18 address space interfaces 9388have been replaced by these 6 new ones: 9389 9390AcpiOsReadPciConfiguration 9391AcpiOsWritePciConfiguration 9392AcpiOsReadMemory 9393AcpiOsWriteMemory 9394AcpiOsReadPort 9395AcpiOsWritePort 9396 9397Added a new interface named AcpiOsGetRootPointer to allow the OSL 9398to perform the platform and/or OS-specific actions necessary to 9399obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9400interface will simply call down to the CA core to perform the low- 9401memory search for the table. On IA-64, the RSDP is obtained from 9402EFI. Migrating this interface to the OSL allows the CA core to 9403 9404remain OS and platform independent. 9405 9406Added a new interface named AcpiOsSignal to provide a generic 9407"function code and pointer" interface for various miscellaneous 9408signals and notifications that must be made to the host OS. The 9409first such signals are intended to support the ASL Fatal and 9410Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9411interface has been obsoleted. 9412 9413The definition of the AcpiFormatException interface has been 9414changed to simplify its use. The caller no longer must supply a 9415buffer to the call; A pointer to a const string is now returned 9416directly. This allows the call to be easily used in printf 9417statements, etc. since the caller does not have to manage a local 9418buffer. 9419 9420 9421 ASL Compiler, Version X2025: 9422 9423The ACPI 2.0 Switch/Case/Default operators have been implemented 9424and are fully functional. They will work with all ACPI 1.0 9425interpreters, since the operators are simply translated to If/Else 9426pairs. 9427 9428The ACPI 2.0 ElseIf operator is implemented and will also work 9429with 1.0 interpreters, for the same reason. 9430 9431Implemented support for ACPI 2.0 variable-length packages. These 9432packages have a separate opcode, and their size is determined by 9433the interpreter at run-time. 9434 9435Documentation The ACPI CA Programmer Reference has been updated to 9436reflect the new interfaces and changes to existing interfaces. 9437 9438 ------------------------------------------ 9439Summary of changes for this label: 06_15_01 9440 9441 ACPI CA Core Subsystem: 9442 9443Fixed a problem where a DWORD-accessed field within a Buffer 9444object would get its byte address inadvertently rounded down to 9445the nearest DWORD. Buffers are always Byte-accessible. 9446 9447 ASL Compiler, version X2024: 9448 9449Fixed a problem where the Switch() operator would either fault or 9450hang the compiler. Note however, that the AML code for this ACPI 94512.0 operator is not yet implemented. 9452 9453Compiler uses the new AcpiOsGetTimer interface to obtain compile 9454timings. 9455 9456Implementation of the CreateField operator automatically converts 9457a reference to a named field within a resource descriptor from a 9458byte offset to a bit offset if required. 9459 9460Added some missing named fields from the resource descriptor 9461support. These are the names that are automatically created by the 9462compiler to reference fields within a descriptor. They are only 9463valid at compile time and are not passed through to the AML 9464interpreter. 9465 9466Resource descriptor named fields are now typed as Integers and 9467subject to compile-time typechecking when used in expressions. 9468 9469 ------------------------------------------ 9470Summary of changes for this label: 05_18_01 9471 9472 ACPI CA Core Subsystem: 9473 9474Fixed a couple of problems in the Field support code where bits 9475from adjacent fields could be returned along with the proper field 9476bits. Restructured the field support code to improve performance, 9477readability and maintainability. 9478 9479New DEBUG_PRINTP macro automatically inserts the procedure name 9480into the output, saving hundreds of copies of procedure name 9481strings within the source, shrinking the memory footprint of the 9482debug version of the core subsystem. 9483 9484 Source Code Structure: 9485 9486The source code directory tree was restructured to reflect the 9487current organization of the component architecture. Some files 9488and directories have been moved and/or renamed. 9489 9490 Linux: 9491 9492Fixed leaking kacpidpc processes. 9493 9494Fixed queueing event data even when /proc/acpi/event is not 9495opened. 9496 9497 ASL Compiler, version X2020: 9498 9499Memory allocation performance enhancement - over 24X compile time 9500improvement on large ASL files. Parse nodes and namestring 9501buffers are now allocated from a large internal compiler buffer. 9502 9503The temporary .SRC file is deleted unless the "-s" option is 9504specified 9505 9506The "-d" debug output option now sends all output to the .DBG file 9507instead of the console. 9508 9509"External" second parameter is now optional 9510 9511"ElseIf" syntax now properly allows the predicate 9512 9513Last operand to "Load" now recognized as a Target operand 9514 9515Debug object can now be used anywhere as a normal object. 9516 9517ResourceTemplate now returns an object of type BUFFER 9518 9519EISAID now returns an object of type INTEGER 9520 9521"Index" now works with a STRING operand 9522 9523"LoadTable" now accepts optional parameters 9524 9525"ToString" length parameter is now optional 9526 9527"Interrupt (ResourceType," parse error fixed. 9528 9529"Register" with a user-defined region space parse error fixed 9530 9531Escaped backslash at the end of a string ("\\") scan/parse error 9532fixed 9533 9534"Revision" is now an object of type INTEGER. 9535 9536 9537 9538------------------------------------------ 9539Summary of changes for this label: 05_02_01 9540 9541Linux: 9542 9543/proc/acpi/event now blocks properly. 9544 9545Removed /proc/sys/acpi. You can still dump your DSDT from 9546/proc/acpi/dsdt. 9547 9548 ACPI CA Core Subsystem: 9549 9550Fixed a problem introduced in the previous label where some of the 9551"small" resource descriptor types were not recognized. 9552 9553Improved error messages for the case where an ASL Field is outside 9554the range of the parent operation region. 9555 9556 ASL Compiler, version X2018: 9557 9558 9559Added error detection for ASL Fields that extend beyond the length 9560of the parent operation region (only if the length of the region 9561is known at compile time.) This includes fields that have a 9562minimum access width that is smaller than the parent region, and 9563individual field units that are partially or entirely beyond the 9564extent of the parent. 9565 9566 9567 9568------------------------------------------ 9569Summary of changes for this label: 04_27_01 9570 9571 ACPI CA Core Subsystem: 9572 9573Fixed a problem where the namespace mutex could be released at the 9574wrong time during execution of AcpiRemoveAddressSpaceHandler. 9575 9576Added optional thread ID output for debug traces, to simplify 9577debugging of multiple threads. Added context switch notification 9578when the debug code realizes that a different thread is now 9579executing ACPI code. 9580 9581Some additional external data types have been prefixed with the 9582string "ACPI_" for consistency. This may effect existing code. 9583The data types affected are the external callback typedefs - e.g., 9584 9585WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9586 9587 Linux: 9588 9589Fixed an issue with the OSL semaphore implementation where a 9590thread was waking up with an error from receiving a SIGCHLD 9591signal. 9592 9593Linux version of ACPI CA now uses the system C library for string 9594manipulation routines instead of a local implementation. 9595 9596Cleaned up comments and removed TBDs. 9597 9598 ASL Compiler, version X2017: 9599 9600Enhanced error detection and reporting for all file I/O 9601operations. 9602 9603 Documentation: 9604 9605Programmer Reference updated to version 1.06. 9606 9607 9608 9609------------------------------------------ 9610Summary of changes for this label: 04_13_01 9611 9612 ACPI CA Core Subsystem: 9613 9614Restructured support for BufferFields and RegionFields. 9615BankFields support is now fully operational. All known 32-bit 9616limitations on field sizes have been removed. Both BufferFields 9617and (Operation) RegionFields are now supported by the same field 9618management code. 9619 9620Resource support now supports QWORD address and IO resources. The 962116/32/64 bit address structures and the Extended IRQ structure 9622have been changed to properly handle Source Resource strings. 9623 9624A ThreadId of -1 is now used to indicate a "mutex not acquired" 9625condition internally and must never be returned by AcpiOsThreadId. 9626This reserved value was changed from 0 since Unix systems allow a 9627thread ID of 0. 9628 9629Linux: 9630 9631Driver code reorganized to enhance portability 9632 9633Added a kernel configuration option to control ACPI_DEBUG 9634 9635Fixed the EC driver to honor _GLK. 9636 9637ASL Compiler, version X2016: 9638 9639Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9640address space was set to 0, not 0x7f as it should be. 9641 9642 ------------------------------------------ 9643Summary of changes for this label: 03_13_01 9644 9645 ACPI CA Core Subsystem: 9646 9647During ACPI initialization, the _SB_._INI method is now run if 9648present. 9649 9650Notify handler fix - notifies are deferred until the parent method 9651completes execution. This fixes the "mutex already acquired" 9652issue seen occasionally. 9653 9654Part of the "implicit conversion" rules in ACPI 2.0 have been 9655found to cause compatibility problems with existing ASL/AML. The 9656convert "result-to-target-type" implementation has been removed 9657for stores to method Args and Locals. Source operand conversion 9658is still fully implemented. Possible changes to ACPI 2.0 9659specification pending. 9660 9661Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9662length. 9663 9664Fix for compiler warnings for 64-bit compiles. 9665 9666 Linux: 9667 9668/proc output aligned for easier parsing. 9669 9670Release-version compile problem fixed. 9671 9672New kernel configuration options documented in Configure.help. 9673 9674IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9675context" message. 9676 9677 OSPM: 9678 9679Power resource driver integrated with bus manager. 9680 9681Fixed kernel fault during active cooling for thermal zones. 9682 9683Source Code: 9684 9685The source code tree has been restructured. 9686 9687 9688 9689------------------------------------------ 9690Summary of changes for this label: 03_02_01 9691 9692 Linux OS Services Layer (OSL): 9693 9694Major revision of all Linux-specific code. 9695 9696Modularized all ACPI-specific drivers. 9697 9698Added new thermal zone and power resource drivers. 9699 9700Revamped /proc interface (new functionality is under /proc/acpi). 9701 9702New kernel configuration options. 9703 9704 Linux known issues: 9705 9706New kernel configuration options not documented in Configure.help 9707yet. 9708 9709 9710Module dependencies not currently implemented. If used, they 9711should be loaded in this order: busmgr, power, ec, system, 9712processor, battery, ac_adapter, button, thermal. 9713 9714Modules will not load if CONFIG_MODVERSION is set. 9715 9716IBM 600E - entering S5 may reboot instead of shutting down. 9717 9718IBM 600E - Sleep button may generate "Invalid <NULL> context" 9719message. 9720 9721Some systems may fail with "execution mutex already acquired" 9722message. 9723 9724 ACPI CA Core Subsystem: 9725 9726Added a new OSL Interface, AcpiOsGetThreadId. This was required 9727for the deadlock detection code. Defined to return a non-zero, 32- 9728bit thread ID for the currently executing thread. May be a non- 9729zero constant integer on single-thread systems. 9730 9731Implemented deadlock detection for internal subsystem mutexes. We 9732may add conditional compilation for this code (debug only) later. 9733 9734ASL/AML Mutex object semantics are now fully supported. This 9735includes multiple acquires/releases by owner and support for the 9736 9737Mutex SyncLevel parameter. 9738 9739A new "Force Release" mechanism automatically frees all ASL 9740Mutexes that have been acquired but not released when a thread 9741exits the interpreter. This forces conformance to the ACPI spec 9742("All mutexes must be released when an invocation exits") and 9743prevents deadlocked ASL threads. This mechanism can be expanded 9744(later) to monitor other resource acquisitions if OEM ASL code 9745continues to misbehave (which it will). 9746 9747Several new ACPI exception codes have been added for the Mutex 9748support. 9749 9750Recursive method calls are now allowed and supported (the ACPI 9751spec does in fact allow recursive method calls.) The number of 9752recursive calls is subject to the restrictions imposed by the 9753SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9754parameter. 9755 9756Implemented support for the SyncLevel parameter for control 9757methods (ACPI 2.0 feature) 9758 9759Fixed a deadlock problem when multiple threads attempted to use 9760the interpreter. 9761 9762Fixed a problem where the string length of a String package 9763element was not always set in a package returned from 9764AcpiEvaluateObject. 9765 9766Fixed a problem where the length of a String package element was 9767not always included in the length of the overall package returned 9768from AcpiEvaluateObject. 9769 9770Added external interfaces (Acpi*) to the ACPI debug memory 9771manager. This manager keeps a list of all outstanding 9772allocations, and can therefore detect memory leaks and attempts to 9773free memory blocks more than once. Useful for code such as the 9774power manager, etc. May not be appropriate for device drivers. 9775Performance with the debug code enabled is slow. 9776 9777The ACPI Global Lock is now an optional hardware element. 9778 9779 ASL Compiler Version X2015: 9780 9781Integrated changes to allow the compiler to be generated on 9782multiple platforms. 9783 9784Linux makefile added to generate the compiler on Linux 9785 9786 Source Code: 9787 9788All platform-specific headers have been moved to their own 9789subdirectory, Include/Platform. 9790 9791New source file added, Interpreter/ammutex.c 9792 9793New header file, Include/acstruct.h 9794 9795 Documentation: 9796 9797The programmer reference has been updated for the following new 9798interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9799 9800 ------------------------------------------ 9801Summary of changes for this label: 02_08_01 9802 9803Core ACPI CA Subsystem: Fixed a problem where an error was 9804incorrectly returned if the return resource buffer was larger than 9805the actual data (in the resource interfaces). 9806 9807References to named objects within packages are resolved to the 9808 9809full pathname string before packages are returned directly (via 9810the AcpiEvaluateObject interface) or indirectly via the resource 9811interfaces. 9812 9813Linux OS Services Layer (OSL): 9814 9815Improved /proc battery interface. 9816 9817 9818Added C-state debugging output and other miscellaneous fixes. 9819 9820ASL Compiler Version X2014: 9821 9822All defined method arguments can now be used as local variables, 9823including the ones that are not actually passed in as parameters. 9824The compiler tracks initialization of the arguments and issues an 9825exception if they are used without prior assignment (just like 9826locals). 9827 9828The -o option now specifies a filename prefix that is used for all 9829output files, including the AML output file. Otherwise, the 9830default behavior is as follows: 1) the AML goes to the file 9831specified in the DSDT. 2) all other output files use the input 9832source filename as the base. 9833 9834 ------------------------------------------ 9835Summary of changes for this label: 01_25_01 9836 9837Core ACPI CA Subsystem: Restructured the implementation of object 9838store support within the interpreter. This includes support for 9839the Store operator as well as any ASL operators that include a 9840target operand. 9841 9842Partially implemented support for Implicit Result-to-Target 9843conversion. This is when a result object is converted on the fly 9844to the type of an existing target object. Completion of this 9845support is pending further analysis of the ACPI specification 9846concerning this matter. 9847 9848CPU-specific code has been removed from the subsystem (hardware 9849directory). 9850 9851New Power Management Timer functions added 9852 9853Linux OS Services Layer (OSL): Moved system state transition code 9854to the core, fixed it, and modified Linux OSL accordingly. 9855 9856Fixed C2 and C3 latency calculations. 9857 9858 9859We no longer use the compilation date for the version message on 9860initialization, but retrieve the version from AcpiGetSystemInfo(). 9861 9862Incorporated for fix Sony VAIO machines. 9863 9864Documentation: The Programmer Reference has been updated and 9865reformatted. 9866 9867 9868ASL Compiler: Version X2013: Fixed a problem where the line 9869numbering and error reporting could get out of sync in the 9870presence of multiple include files. 9871 9872 ------------------------------------------ 9873Summary of changes for this label: 01_15_01 9874 9875Core ACPI CA Subsystem: 9876 9877Implemented support for type conversions in the execution of the 9878ASL Concatenate operator (The second operand is converted to 9879match the type of the first operand before concatenation.) 9880 9881Support for implicit source operand conversion is partially 9882implemented. The ASL source operand types Integer, Buffer, and 9883String are freely interchangeable for most ASL operators and are 9884converted by the interpreter on the fly as required. Implicit 9885Target operand conversion (where the result is converted to the 9886target type before storing) is not yet implemented. 9887 9888Support for 32-bit and 64-bit BCD integers is implemented. 9889 9890Problem fixed where a field read on an aligned field could cause a 9891read past the end of the field. 9892 9893New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9894does not return a value, but the caller expects one. (The ASL 9895compiler flags this as a warning.) 9896 9897ASL Compiler: 9898 9899Version X2011: 99001. Static typechecking of all operands is implemented. This 9901prevents the use of invalid objects (such as using a Package where 9902an Integer is required) at compile time instead of at interpreter 9903run-time. 99042. The ASL source line is printed with ALL errors and warnings. 99053. Bug fix for source EOF without final linefeed. 99064. Debug option is split into a parse trace and a namespace trace. 99075. Namespace output option (-n) includes initial values for 9908integers and strings. 99096. Parse-only option added for quick syntax checking. 99107. Compiler checks for duplicate ACPI name declarations 9911 9912Version X2012: 99131. Relaxed typechecking to allow interchangeability between 9914strings, integers, and buffers. These types are now converted by 9915the interpreter at runtime. 99162. Compiler reports time taken by each internal subsystem in the 9917debug output file. 9918 9919 9920 ------------------------------------------ 9921Summary of changes for this label: 12_14_00 9922 9923ASL Compiler: 9924 9925This is the first official release of the compiler. Since the 9926compiler requires elements of the Core Subsystem, this label 9927synchronizes everything. 9928 9929------------------------------------------ 9930Summary of changes for this label: 12_08_00 9931 9932 9933Fixed a problem where named references within the ASL definition 9934of both OperationRegions and CreateXXXFields did not work 9935properly. The symptom was an AE_AML_OPERAND_TYPE during 9936initialization of the region/field. This is similar (but not 9937related internally) to the problem that was fixed in the last 9938label. 9939 9940Implemented both 32-bit and 64-bit support for the BCD ASL 9941functions ToBCD and FromBCD. 9942 9943Updated all legal headers to include "2000" in the copyright 9944years. 9945 9946 ------------------------------------------ 9947Summary of changes for this label: 12_01_00 9948 9949Fixed a problem where method invocations within the ASL definition 9950of both OperationRegions and CreateXXXFields did not work 9951properly. The symptom was an AE_AML_OPERAND_TYPE during 9952initialization of the region/field: 9953 9954 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9955[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9956(0x3005) 9957 9958Fixed a problem where operators with more than one nested 9959subexpression would fail. The symptoms were varied, by mostly 9960AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9961problem that has gone unnoticed until now. 9962 9963 Subtract (Add (1,2), Multiply (3,4)) 9964 9965Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9966previous build (The prefix part of a relative path was handled 9967incorrectly). 9968 9969Fixed a problem where Operation Region initialization failed if 9970the operation region name was a "namepath" instead of a simple 9971"nameseg". Symptom was an AE_NO_OPERAND error. 9972 9973Fixed a problem where an assignment to a local variable via the 9974indirect RefOf mechanism only worked for the first such 9975assignment. Subsequent assignments were ignored. 9976 9977 ------------------------------------------ 9978Summary of changes for this label: 11_15_00 9979 9980ACPI 2.0 table support with backwards support for ACPI 1.0 and the 99810.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9982the AML interpreter does NOT have support for the new 2.0 ASL 9983grammar terms at this time. 9984 9985All ACPI hardware access is via the GAS structures in the ACPI 2.0 9986FADT. 9987 9988All physical memory addresses across all platforms are now 64 bits 9989wide. Logical address width remains dependent on the platform 9990(i.e., "void *"). 9991 9992AcpiOsMapMemory interface changed to a 64-bit physical address. 9993 9994The AML interpreter integer size is now 64 bits, as per the ACPI 99952.0 specification. 9996 9997For backwards compatibility with ACPI 1.0, ACPI tables with a 9998revision number less than 2 use 32-bit integers only. 9999 10000Fixed a problem where the evaluation of OpRegion operands did not 10001always resolve them to numbers properly. 10002 10003------------------------------------------ 10004Summary of changes for this label: 10_20_00 10005 10006Fix for CBN_._STA issue. This fix will allow correct access to 10007CBN_ OpRegions when the _STA returns 0x8. 10008 10009Support to convert ACPI constants (Ones, Zeros, One) to actual 10010values before a package object is returned 10011 10012Fix for method call as predicate to if/while construct causing 10013incorrect if/while behavior 10014 10015Fix for Else block package lengths sometimes calculated wrong (if 10016block > 63 bytes) 10017 10018Fix for Processor object length field, was always zero 10019 10020Table load abort if FACP sanity check fails 10021 10022Fix for problem with Scope(name) if name already exists 10023 10024Warning emitted if a named object referenced cannot be found 10025(resolved) during method execution. 10026 10027 10028 10029 10030 10031------------------------------------------ 10032Summary of changes for this label: 9_29_00 10033 10034New table initialization interfaces: AcpiInitializeSubsystem no 10035longer has any parameters AcpiFindRootPointer - Find the RSDP (if 10036necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 10037>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 10038AcpiLoadTables 10039 10040Note: These interface changes require changes to all existing OSDs 10041 10042The PCI_Config default address space handler is always installed 10043at the root namespace object. 10044 10045------------------------------------------- 10046Summary of changes for this label: 09_15_00 10047 10048The new initialization architecture is implemented. New 10049interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 10050AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 10051 10052(Namespace is automatically loaded when a table is loaded) 10053 10054The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 1005552 bytes to 32 bytes. There is usually one of these for every 10056namespace object, so the memory savings is significant. 10057 10058Implemented just-in-time evaluation of the CreateField operators. 10059 10060Bug fixes for IA-64 support have been integrated. 10061 10062Additional code review comments have been implemented 10063 10064The so-called "third pass parse" has been replaced by a final walk 10065through the namespace to initialize all operation regions (address 10066spaces) and fields that have not yet been initialized during the 10067execution of the various _INI and REG methods. 10068 10069New file - namespace/nsinit.c 10070 10071------------------------------------------- 10072Summary of changes for this label: 09_01_00 10073 10074Namespace manager data structures have been reworked to change the 10075primary object from a table to a single object. This has 10076resulted in dynamic memory savings of 3X within the namespace and 100772X overall in the ACPI CA subsystem. 10078 10079Fixed problem where the call to AcpiEvFindPciRootBuses was 10080inadvertently left commented out. 10081 10082Reduced the warning count when generating the source with the GCC 10083compiler. 10084 10085Revision numbers added to each module header showing the 10086SourceSafe version of the file. Please refer to this version 10087number when giving us feedback or comments on individual modules. 10088 10089The main object types within the subsystem have been renamed to 10090clarify their purpose: 10091 10092ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10093ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10094ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10095 10096NOTE: no changes to the initialization sequence are included in 10097this label. 10098 10099------------------------------------------- 10100Summary of changes for this label: 08_23_00 10101 10102Fixed problem where TerminateControlMethod was being called 10103multiple times per method 10104 10105Fixed debugger problem where single stepping caused a semaphore to 10106be oversignalled 10107 10108Improved performance through additional parse object caching - 10109added ACPI_EXTENDED_OP type 10110 10111------------------------------------------- 10112Summary of changes for this label: 08_10_00 10113 10114Parser/Interpreter integration: Eliminated the creation of 10115complete parse trees for ACPI tables and control methods. 10116Instead, parse subtrees are created and then deleted as soon as 10117they are processed (Either entered into the namespace or executed 10118by the interpreter). This reduces the use of dynamic kernel 10119memory significantly. (about 10X) 10120 10121Exception codes broken into classes and renumbered. Be sure to 10122recompile all code that includes acexcep.h. Hopefully we won't 10123have to renumber the codes again now that they are split into 10124classes (environment, programmer, AML code, ACPI table, and 10125internal). 10126 10127Fixed some additional alignment issues in the Resource Manager 10128subcomponent 10129 10130Implemented semaphore tracking in the AcpiExec utility, and fixed 10131several places where mutexes/semaphores were being unlocked 10132without a corresponding lock operation. There are no known 10133semaphore or mutex "leaks" at this time. 10134 10135Fixed the case where an ASL Return operator is used to return an 10136unnamed package. 10137 10138------------------------------------------- 10139Summary of changes for this label: 07_28_00 10140 10141Fixed a problem with the way addresses were calculated in 10142AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10143manifested itself when a Field was created with WordAccess or 10144DwordAccess, but the field unit defined within the Field was less 10145 10146than a Word or Dword. 10147 10148Fixed a problem in AmlDumpOperands() module's loop to pull 10149operands off of the operand stack to display information. The 10150problem manifested itself as a TLB error on 64-bit systems when 10151accessing an operand stack with two or more operands. 10152 10153Fixed a problem with the PCI configuration space handlers where 10154context was getting confused between accesses. This required a 10155change to the generic address space handler and address space 10156setup definitions. Handlers now get both a global handler context 10157(this is the one passed in by the user when executing 10158AcpiInstallAddressSpaceHandler() and a specific region context 10159that is unique to each region (For example, the _ADR, _SEG and 10160_BBN values associated with a specific region). The generic 10161function definitions have changed to the following: 10162 10163typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10164UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10165*HandlerContext, // This used to be void *Context void 10166*RegionContext); // This is an additional parameter 10167 10168typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10169RegionHandle, UINT32 Function, void *HandlerContext, void 10170**RegionContext); // This used to be **ReturnContext 10171 10172------------------------------------------- 10173Summary of changes for this label: 07_21_00 10174 10175Major file consolidation and rename. All files within the 10176interpreter have been renamed as well as most header files. This 10177was done to prevent collisions with existing files in the host 10178OSs -- filenames such as "config.h" and "global.h" seem to be 10179quite common. The VC project files have been updated. All 10180makefiles will require modification. 10181 10182The parser/interpreter integration continues in Phase 5 with the 10183implementation of a complete 2-pass parse (the AML is parsed 10184twice) for each table; This avoids the construction of a huge 10185parse tree and therefore reduces the amount of dynamic memory 10186required by the subsystem. Greater use of the parse object cache 10187means that performance is unaffected. 10188 10189Many comments from the two code reviews have been rolled in. 10190 10191The 64-bit alignment support is complete. 10192 10193------------------------------------------- 10194Summary of changes for this label: 06_30_00 10195 10196With a nod and a tip of the hat to the technology of yesteryear, 10197we've added support in the source code for 80 column output 10198devices. The code is now mostly constrained to 80 columns or 10199less to support environments and editors that 1) cannot display 10200or print more than 80 characters on a single line, and 2) cannot 10201disable line wrapping. 10202 10203A major restructuring of the namespace data structure has been 10204completed. The result is 1) cleaner and more 10205understandable/maintainable code, and 2) a significant reduction 10206in the dynamic memory requirement for each named ACPI object 10207(almost half). 10208 10209------------------------------------------- 10210Summary of changes for this label: 06_23_00 10211 10212Linux support has been added. In order to obtain approval to get 10213the ACPI CA subsystem into the Linux kernel, we've had to make 10214quite a few changes to the base subsystem that will affect all 10215users (all the changes are generic and OS- independent). The 10216effects of these global changes have been somewhat far reaching. 10217Files have been merged and/or renamed and interfaces have been 10218renamed. The major changes are described below. 10219 10220Osd* interfaces renamed to AcpiOs* to eliminate namespace 10221pollution/confusion within our target kernels. All OSD 10222interfaces must be modified to match the new naming convention. 10223 10224Files merged across the subsystem. A number of the smaller source 10225and header files have been merged to reduce the file count and 10226increase the density of the existing files. There are too many 10227to list here. In general, makefiles that call out individual 10228files will require rebuilding. 10229 10230Interpreter files renamed. All interpreter files now have the 10231prefix am* instead of ie* and is*. 10232 10233Header files renamed: The acapi.h file is now acpixf.h. The 10234acpiosd.h file is now acpiosxf.h. We are removing references to 10235the acronym "API" since it is somewhat windowsy. The new name is 10236"external interface" or xface or xf in the filenames.j 10237 10238 10239All manifest constants have been forced to upper case (some were 10240mixed case.) Also, the string "ACPI_" has been prepended to many 10241(not all) of the constants, typedefs, and structs. 10242 10243The globals "DebugLevel" and "DebugLayer" have been renamed 10244"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10245 10246All other globals within the subsystem are now prefixed with 10247"AcpiGbl_" Internal procedures within the subsystem are now 10248prefixed with "Acpi" (with only a few exceptions). The original 10249two-letter abbreviation for the subcomponent remains after "Acpi" 10250- for example, CmCallocate became AcpiCmCallocate. 10251 10252Added a source code translation/conversion utility. Used to 10253generate the Linux source code, it can be modified to generate 10254other types of source as well. Can also be used to cleanup 10255existing source by removing extraneous spaces and blank lines. 10256Found in tools/acpisrc/* 10257 10258OsdUnMapMemory was renamed to OsdUnmapMemory and then 10259AcpiOsUnmapMemory. (UnMap became Unmap). 10260 10261A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10262When set to one, this indicates that the caller wants to use the 10263 10264semaphore as a mutex, not a counting semaphore. ACPI CA uses 10265both types. However, implementers of this call may want to use 10266different OS primitives depending on the type of semaphore 10267requested. For example, some operating systems provide separate 10268 10269"mutex" and "semaphore" interfaces - where the mutex interface is 10270much faster because it doesn't have all the overhead of a full 10271semaphore implementation. 10272 10273Fixed a deadlock problem where a method that accesses the PCI 10274address space can block forever if it is the first access to the 10275space. 10276 10277------------------------------------------- 10278Summary of changes for this label: 06_02_00 10279 10280Support for environments that cannot handle unaligned data 10281accesses (e.g. firmware and OS environments devoid of alignment 10282handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10283been added (via configurable macros) in these three areas: - 10284Transfer of data from the raw AML byte stream is done via byte 10285moves instead of word/dword/qword moves. - External objects are 10286aligned within the user buffer, including package elements (sub- 10287objects). - Conversion of name strings to UINT32 Acpi Names is now 10288done byte-wise. 10289 10290The Store operator was modified to mimic Microsoft's 10291implementation when storing to a Buffer Field. 10292 10293Added a check of the BM_STS bit before entering C3. 10294 10295The methods subdirectory has been obsoleted and removed. A new 10296file, cmeval.c subsumes the functionality. 10297 10298A 16-bit (DOS) version of AcpiExec has been developed. The 10299makefile is under the acpiexec directory. 10300