changes.txt revision 212761
1---------------------------------------- 215 September 2010. Summary of changes for version 20100915: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Removed the AcpiOsDerivePciId OSL interface. The various host implementations 9of this function were not OS-dependent and are now obsolete and can be 10removed from all host OSLs. This function has been replaced by 11AcpiHwDerivePciId, which is now part of the ACPICA core code. 12AcpiHwDerivePciId has been implemented without recursion. Adds one new 13module, hwpci.c. ACPICA BZ 857. 14 15Implemented a dynamic repair for _HID and _CID strings. The following 16problems are now repaired at runtime: 1) Remove a leading asterisk in the 17string, and 2) the entire string is uppercased. Both repairs are in 18accordance with the ACPI specification and will simplify host driver code. 19ACPICA BZ 871. 20 21The ACPI_THREAD_ID type is no longer configurable, internally it is now 22always UINT64. This simplifies the ACPICA code, especially any printf output. 23UINT64 is the only common data type for all thread_id types across all 24operating systems. It is now up to the host OSL to cast the native thread_id 25type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 26Lin Ming, Bob Moore. 27 28Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 29keyword is not standard across compilers, and this type allows inline to be 30configured on a per-compiler basis. Lin Ming. 31 32Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 33Added an extern for this boolean in acpixf.h. Some hosts utilize this value 34during suspend/restore operations. ACPICA BZ 869. 35 36All code that implements error/warning messages with the "ACPI:" prefix has 37been moved to a new module, utxferror.c. 38 39The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 40is used. ACPICA BZ 829. Lin Ming, Bob Moore. 41 42Example Code and Data Size: These are the sizes for the OS-independent 43acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 44debug version of the code includes the debug output trace mechanism and has a 45much larger code and data size. 46 47 Previous Release: 48 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 49 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 50 Current Release: 51 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 52 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 53 542) iASL Compiler/Disassembler and Tools: 55 56iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 57This keeps the output files free of random error messages that may originate 58from within the namespace/interpreter code. Used this opportunity to merge 59all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 60866. Lin Ming, Bob Moore. 61 62Tools: update some printfs for ansi warnings on size_t. Handle width change 63of size_t on 32-bit versus 64-bit generations. Lin Ming. 64 65---------------------------------------- 6606 August 2010. Summary of changes for version 20100806: 67 681) ACPI CA Core Subsystem: 69 70Designed and implemented a new host interface to the _OSI support code. This 71will allow the host to dynamically add or remove multiple _OSI strings, as 72well as install an optional handler that is called for each _OSI invocation. 73Also added a new AML debugger command, 'osi' to display and modify the global 74_OSI string table, and test support in the AcpiExec utility. See the ACPICA 75reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 76New Functions: 77 AcpiInstallInterface - Add an _OSI string. 78 AcpiRemoveInterface - Delete an _OSI string. 79 AcpiInstallInterfaceHandler - Install optional _OSI handler. 80Obsolete Functions: 81 AcpiOsValidateInterface - no longer used. 82New Files: 83 source/components/utilities/utosi.c 84 85Re-introduced the support to enable multi-byte transfers for Embedded 86Controller (EC) operation regions. A reported problem was found to be a bug 87in the host OS, not in the multi-byte support. Previously, the maximum data 88size passed to the EC operation region handler was a single byte. There are 89often EC Fields larger than one byte that need to be transferred, and it is 90useful for the EC driver to lock these as a single transaction. This change 91enables single transfers larger than 8 bits. This effectively changes the 92access to the EC space from ByteAcc to AnyAcc, and will probably require 93changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 94transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 95 96Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 97prototype in acpiosxf.h had the output value pointer as a (void *). 98It should be a (UINT64 *). This may affect some host OSL code. 99 100Fixed a couple problems with the recently modified Linux makefiles for iASL 101and AcpiExec. These new makefiles place the generated object files in the 102local directory so that there can be no collisions between the files that are 103shared between them that are compiled with different options. 104 105Example Code and Data Size: These are the sizes for the OS-independent 106acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 107debug version of the code includes the debug output trace mechanism and has a 108much larger code and data size. 109 110 Previous Release: 111 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 112 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 113 Current Release: 114 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 115 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 116 1172) iASL Compiler/Disassembler and Tools: 118 119iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 120namespace from and disassemble an entire group of AML files. Useful for 121loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 122disassembling with one simple command. ACPICA BZ 865. Lin Ming. 123 124iASL: Allow multiple invocations of -e option. This change allows multiple 125uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 126Lin Ming. 127 128---------------------------------------- 12902 July 2010. Summary of changes for version 20100702: 130 1311) ACPI CA Core Subsystem: 132 133Implemented several updates to the recently added GPE reference count 134support. The model for "wake" GPEs is changing to give the host OS complete 135control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 136methods, since the host already must execute them. Also, additional changes 137were made to help ensure that the reference counts are kept in proper 138synchronization with reality. Rafael J. Wysocki. 139 1401) Ensure that GPEs are not enabled twice during initialization. 1412) Ensure that GPE enable masks stay in sync with the reference count. 1423) Do not inadvertently enable GPEs when writing GPE registers. 1434) Remove the internal wake reference counter and add new AcpiGpeWakeup 144interface. This interface will set or clear individual GPEs for wakeup. 1455) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 146are now used for "runtime" GPEs only. 147 148Changed the behavior of the GPE install/remove handler interfaces. The GPE is 149no longer disabled during this process, as it was found to cause problems on 150some machines. Rafael J. Wysocki. 151 152Reverted a change introduced in version 20100528 to enable Embedded 153Controller multi-byte transfers. This change was found to cause problems with 154Index Fields and possibly Bank Fields. It will be reintroduced when these 155problems have been resolved. 156 157Fixed a problem with references to Alias objects within Package Objects. A 158reference to an Alias within the definition of a Package was not always 159resolved properly. Aliases to objects like Processors, Thermal zones, etc. 160were resolved to the actual object instead of a reference to the object as it 161should be. Package objects are only allowed to contain integer, string, 162buffer, package, and reference objects. Redhat bugzilla 608648. 163 164Example Code and Data Size: These are the sizes for the OS-independent 165acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 166debug version of the code includes the debug output trace mechanism and has a 167much larger code and data size. 168 169 Previous Release: 170 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 171 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 172 Current Release: 173 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 174 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 175 1762) iASL Compiler/Disassembler and Tools: 177 178iASL: Implemented a new compiler subsystem to allow definition and 179compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 180are called "ACPI Data Tables", and the new compiler is the "Data Table 181Compiler". This compiler is intended to simplify the existing error-prone 182process of creating these tables for the BIOS, as well as allowing the 183disassembly, modification, recompilation, and override of existing ACPI data 184tables. See the iASL User Guide for detailed information. 185 186iASL: Implemented a new Template Generator option in support of the new Data 187Table Compiler. This option will create examples of all known ACPI tables 188that can be used as the basis for table development. See the iASL 189documentation and the -T option. 190 191Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 192Descriptor Table). 193 194Updated the Linux makefiles for iASL and AcpiExec to place the generated 195object files in the local directory so that there can be no collisions 196between the shared files between them that are generated with different 197options. 198 199Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 200the #define __APPLE__ to enable this support. 201 202---------------------------------------- 20328 May 2010. Summary of changes for version 20100528: 204 205Note: The ACPI 4.0a specification was released on April 5, 2010 and is 206available at www.acpi.info. This is primarily an errata release. 207 2081) ACPI CA Core Subsystem: 209 210Undefined ACPI tables: We are looking for the definitions for the following 211ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 212 213Implemented support to enable multi-byte transfers for Embedded Controller 214(EC) operation regions. Previously, the maximum data size passed to the EC 215operation region handler was a single byte. There are often EC Fields larger 216than one byte that need to be transferred, and it is useful for the EC driver 217to lock these as a single transaction. This change enables single transfers 218larger than 8 bits. This effectively changes the access to the EC space from 219ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 220Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 221transfers. Alexey Starikovskiy, Lin Ming 222 223Implemented a performance enhancement for namespace search and access. This 224change enhances the performance of namespace searches and walks by adding a 225backpointer to the parent in each namespace node. On large namespaces, this 226change can improve overall ACPI performance by up to 9X. Adding a pointer to 227each namespace node increases the overall size of the internal namespace by 228about 5%, since each namespace entry usually consists of both a namespace 229node and an ACPI operand object. However, this is the first growth of the 230namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 231 232Implemented a performance optimization that reduces the number of namespace 233walks. On control method exit, only walk the namespace if the method is known 234to have created namespace objects outside of its local scope. Previously, the 235entire namespace was traversed on each control method exit. This change can 236improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 237 238Added support to truncate I/O addresses to 16 bits for Windows compatibility. 239Some ASL code has been seen in the field that inadvertently has bits set 240above bit 15. This feature is optional and is enabled if the BIOS requests 241any Windows OSI strings. It can also be enabled by the host OS. Matthew 242Garrett, Bob Moore. 243 244Added support to limit the maximum time for the ASL Sleep() operator. To 245prevent accidental deep sleeps, limit the maximum time that Sleep() will 246actually sleep. Configurable, the default maximum is two seconds. ACPICA 247bugzilla 854. 248 249Added run-time validation support for the _WDG and_WED Microsoft predefined 250methods. These objects are defined by "Windows Instrumentation", and are not 251part of the ACPI spec. ACPICA BZ 860. 252 253Expanded all statistic counters used during namespace and device 254initialization from 16 to 32 bits in order to support very large namespaces. 255 256Replaced all instances of %d in printf format specifiers with %u since nearly 257all integers in ACPICA are unsigned. 258 259Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 260as AE_NO_HANDLER. 261 262Example Code and Data Size: These are the sizes for the OS-independent 263acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 264debug version of the code includes the debug output trace mechanism and has a 265much larger code and data size. 266 267 Previous Release: 268 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 269 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 270 Current Release: 271 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 272 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 273 2742) iASL Compiler/Disassembler and Tools: 275 276iASL: Added compiler support for the _WDG and_WED Microsoft predefined 277methods. These objects are defined by "Windows Instrumentation", and are not 278part of the ACPI spec. ACPICA BZ 860. 279 280AcpiExec: added option to disable the memory tracking mechanism. The -dt 281option will disable the tracking mechanism, which improves performance 282considerably. 283 284AcpiExec: Restructured the command line options into -d (disable) and -e 285(enable) options. 286 287---------------------------------------- 28828 April 2010. Summary of changes for version 20100428: 289 2901) ACPI CA Core Subsystem: 291 292Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 293including FADT-based and GPE Block Devices, execute any _PRW methods in the 294new table, and process any _Lxx/_Exx GPE methods in the new table. Any 295runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 296immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 297Devices. Provides compatibility with other ACPI implementations. Two new 298files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 299 300Fixed a regression introduced in version 20100331 within the table manager 301where initial table loading could fail. This was introduced in the fix for 302AcpiReallocateRootTable. Also, renamed some of fields in the table manager 303data structures to clarify their meaning and use. 304 305Fixed a possible allocation overrun during internal object copy in 306AcpiUtCopySimpleObject. The original code did not correctly handle the case 307where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 308 309Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 310possible access beyond end-of-allocation. Also, now fully validate descriptor 311(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 312 313Example Code and Data Size: These are the sizes for the OS-independent 314acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 315debug version of the code includes the debug output trace mechanism and has a 316much larger code and data size. 317 318 Previous Release: 319 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 320 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 321 Current Release: 322 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 323 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 324 3252) iASL Compiler/Disassembler and Tools: 326 327iASL: Implemented Min/Max/Len/Gran validation for address resource 328descriptors. This change implements validation for the address fields that 329are common to all address-type resource descriptors. These checks are 330implemented: Checks for valid Min/Max, length within the Min/Max window, 331valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 332table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 333and aslrestype2.c files into five new files. ACPICA BZ 840. 334 335iASL: Added support for the _Wxx predefined names. This support was missing 336and these names were not recognized by the compiler as valid predefined 337names. ACPICA BZ 851. 338 339iASL: Added an error for all predefined names that are defined to return no 340value and thus must be implemented as Control Methods. These include all of 341the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 342names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 343 344iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 345ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 346dynamically loaded via the Load() operator. Also cleaned up output for the - 347ta and -tc options. ACPICA BZ 853. 348 349Tests: Added a new file with examples of extended iASL error checking. 350Demonstrates the advanced error checking ability of the iASL compiler. 351Available at tests/misc/badcode.asl. 352 353---------------------------------------- 35431 March 2010. Summary of changes for version 20100331: 355 3561) ACPI CA Core Subsystem: 357 358Completed a major update for the GPE support in order to improve support for 359shared GPEs and to simplify both host OS and ACPICA code. Added a reference 360count mechanism to support shared GPEs that require multiple device drivers. 361Several external interfaces have changed. One external interface has been 362removed. One new external interface was added. Most of the GPE external 363interfaces now use the GPE spinlock instead of the events mutex (and the 364Flags parameter for many GPE interfaces has been removed.) See the updated 365ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 366Wysocki. ACPICA BZ 831. 367 368Changed: 369 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 370Removed: 371 AcpiSetGpeType 372New: 373 AcpiSetGpe 374 375Implemented write support for DataTable operation regions. These regions are 376defined via the DataTableRegion() operator. Previously, only read support was 377implemented. The ACPI specification allows DataTableRegions to be read/write, 378however. 379 380Implemented a new subsystem option to force a copy of the DSDT to local 381memory. Optionally copy the entire DSDT to local memory (instead of simply 382mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 383the original DSDT, creating the need for this option. Default is FALSE, do 384not copy the DSDT. 385 386Implemented detection of a corrupted or replaced DSDT. This change adds 387support to detect a DSDT that has been corrupted and/or replaced from outside 388the OS (by firmware). This is typically catastrophic for the system, but has 389been seen on some machines. Once this problem has been detected, the DSDT 390copy option can be enabled via system configuration. Lin Ming, Bob Moore. 391 392Fixed two problems with AcpiReallocateRootTable during the root table copy. 393When copying the root table to the new allocation, the length used was 394incorrect. The new size was used instead of the current table size, meaning 395too much data was copied. Also, the count of available slots for ACPI tables 396was not set correctly. Alexey Starikovskiy, Bob Moore. 397 398Example Code and Data Size: These are the sizes for the OS-independent 399acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 400debug version of the code includes the debug output trace mechanism and has a 401much larger code and data size. 402 403 Previous Release: 404 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 405 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 406 Current Release: 407 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 408 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 409 4102) iASL Compiler/Disassembler and Tools: 411 412iASL: Implement limited typechecking for values returned from predefined 413control methods. The type of any returned static (unnamed) object is now 414validated. For example, Return(1). ACPICA BZ 786. 415 416iASL: Fixed a predefined name object verification regression. Fixes a problem 417introduced in version 20100304. An error is incorrectly generated if a 418predefined name is declared as a static named object with a value defined 419using the keywords "Zero", "One", or "Ones". Lin Ming. 420 421iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 422reducing the requested registry access rights. ACPICA BZ 842. 423 424Disassembler: fixed a possible fault when generating External() statements. 425Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 426(carat). Fixes a string length allocation calculation. Lin Ming. 427 428---------------------------------------- 42904 March 2010. Summary of changes for version 20100304: 430 4311) ACPI CA Core Subsystem: 432 433Fixed a possible problem with the AML Mutex handling function 434AcpiExReleaseMutex where the function could fault under the very rare 435condition when the interpreter has blocked, the interpreter lock is released, 436the interpreter is then reentered via the same thread, and attempts to 437acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 438Ming. 439 440Implemented additional configuration support for the AML "Debug Object". 441Output from the debug object can now be enabled via a global variable, 442AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 443This debug output is now available in the release version of ACPICA instead 444of just the debug version. Also, the entire debug output module can now be 445configured out of the ACPICA build if desired. One new file added, 446executer/exdebug.c. Lin Ming, Bob Moore. 447 448Added header support for the ACPI MCHI table (Management Controller Host 449Interface Table). This table was added in ACPI 4.0, but the defining document 450has only recently become available. 451 452Standardized output of integer values for ACPICA warnings/errors. Always use 4530x prefix for hex output, always use %u for unsigned integer decimal output. 454Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 455invocations.) These invocations were converted from the original 456ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 457 458Example Code and Data Size: These are the sizes for the OS-independent 459acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 460debug version of the code includes the debug output trace mechanism and has a 461much larger code and data size. 462 463 Previous Release: 464 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 465 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 466 Current Release: 467 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 468 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 469 4702) iASL Compiler/Disassembler and Tools: 471 472iASL: Implemented typechecking support for static (non-control method) 473predefined named objects that are declared with the Name() operator. For 474example, the type of this object is now validated to be of type Integer: 475Name(_BBN, 1). This change migrates the compiler to using the core predefined 476name table instead of maintaining a local version. Added a new file, 477aslpredef.c. ACPICA BZ 832. 478 479Disassembler: Added support for the ACPI 4.0 MCHI table. 480 481---------------------------------------- 48221 January 2010. Summary of changes for version 20100121: 483 4841) ACPI CA Core Subsystem: 485 486Added the 2010 copyright to all module headers and signons. This affects 487virtually every file in the ACPICA core subsystem, the iASL compiler, the 488tools/utilities, and the test suites. 489 490Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 491invocations of the _STA method. In the case where a specific _HID is 492requested, do not run _STA until a _HID match is found. This eliminates 493potentially dozens of _STA calls during a search for a particular device/HID, 494which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 495 496Implemented an additional repair for predefined method return values. Attempt 497to repair unexpected NULL elements within returned Package objects. Create an 498Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 499ACPICA BZ 818. Lin Ming, Bob Moore. 500 501Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 502code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 50364-bit AML integers). It is now obsolete and this change removes it from the 504ACPICA code base, replaced by UINT64. The original typedef has been retained 505for now for compatibility with existing device driver code. ACPICA BZ 824. 506 507Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 508the parse tree object. 509 510Added additional warning options for the gcc-4 generation. Updated the source 511accordingly. This includes some code restructuring to eliminate unreachable 512code, elimination of some gotos, elimination of unused return values, some 513additional casting, and removal of redundant declarations. 514 515Example Code and Data Size: These are the sizes for the OS-independent 516acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 517debug version of the code includes the debug output trace mechanism and has a 518much larger code and data size. 519 520 Previous Release: 521 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 522 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 523 Current Release: 524 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 525 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 526 5272) iASL Compiler/Disassembler and Tools: 528 529No functional changes for this release. 530 531---------------------------------------- 53214 December 2009. Summary of changes for version 20091214: 533 5341) ACPI CA Core Subsystem: 535 536Enhanced automatic data type conversions for predefined name repairs. This 537change expands the automatic repairs/conversions for predefined name return 538values to make Integers, Strings, and Buffers fully interchangeable. Also, a 539Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 540module was completely restructured. Lin Ming, Bob Moore. 541 542Implemented automatic removal of null package elements during predefined name 543repairs. This change will automatically remove embedded and trailing NULL 544package elements from returned package objects that are defined to contain a 545variable number of sub-packages. The driver is then presented with a package 546with no null elements to deal with. ACPICA BZ 819. 547 548Implemented a repair for the predefined _FDE and _GTM names. The expected 549return value for both names is a Buffer of 5 DWORDs. This repair fixes two 550possible problems (both seen in the field), where a package of integers is 551returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 552 553Implemented additional module-level code support. This change will properly 554execute module-level code that is not at the root of the namespace (under a 555Device object, etc.). Now executes the code within the current scope instead 556of the root. ACPICA BZ 762. Lin Ming. 557 558Fixed possible mutex acquisition errors when running _REG methods. Fixes a 559problem where mutex errors can occur when running a _REG method that is in 560the same scope as a method-defined operation region or an operation region 561under a module-level IF block. This type of code is rare, so the problem has 562not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 563 564Fixed a possible memory leak during module-level code execution. An object 565could be leaked for each block of executed module-level code if the 566interpreter slack mode is enabled This change deletes any implicitly returned 567object from the module-level code block. Lin Ming. 568 569Removed messages for successful predefined repair(s). The repair mechanism 570was considered too wordy. Now, messages are only unconditionally emitted if 571the return object cannot be repaired. Existing messages for successful 572repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 573 574Example Code and Data Size: These are the sizes for the OS-independent 575acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 576debug version of the code includes the debug output trace mechanism and has a 577much larger code and data size. 578 579 Previous Release: 580 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 581 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 582 Current Release: 583 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 584 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 585 5862) iASL Compiler/Disassembler and Tools: 587 588iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 589were no longer automatically removed at the termination of the compile. 590 591acpiexec: Implemented the -f option to specify default region fill value. 592This option specifies the value used to initialize buffers that simulate 593operation regions. Default value is zero. Useful for debugging problems that 594depend on a specific initial value for a region or field. 595 596---------------------------------------- 59712 November 2009. Summary of changes for version 20091112: 598 5991) ACPI CA Core Subsystem: 600 601Implemented a post-order callback to AcpiWalkNamespace. The existing 602interface only has a pre-order callback. This change adds an additional 603parameter for a post-order callback which will be more useful for bus scans. 604ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 605 606Modified the behavior of the operation region memory mapping cache for 607SystemMemory. Ensure that the memory mappings created for operation regions 608do not cross 4K page boundaries. Crossing a page boundary while mapping 609regions can cause kernel warnings on some hosts if the pages have different 610attributes. Such regions are probably BIOS bugs, and this is the workaround. 611Linux BZ 14445. Lin Ming. 612 613Implemented an automatic repair for predefined methods that must return 614sorted lists. This change will repair (by sorting) packages returned by _ALR, 615_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 616and do not contain NULL package elements. Adds one new file, 617namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 618 619Fixed a possible fault during predefined name validation if a return Package 620object contains NULL elements. Also adds a warning if a NULL element is 621followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 622include repair or removal of all such NULL elements where possible. 623 624Implemented additional module-level executable AML code support. This change 625will execute module-level code that is not at the root of the namespace 626(under a Device object, etc.) at table load time. Module-level executable AML 627code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 628 629Implemented a new internal function to create Integer objects. This function 630simplifies miscellaneous object creation code. ACPICA BZ 823. 631 632Reduced the severity of predefined repair messages, Warning to Info. Since 633the object was successfully repaired, a warning is too severe. Reduced to an 634info message for now. These messages may eventually be changed to debug-only. 635ACPICA BZ 812. 636 637Example Code and Data Size: These are the sizes for the OS-independent 638acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 639debug version of the code includes the debug output trace mechanism and has a 640much larger code and data size. 641 642 Previous Release: 643 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 644 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 645 Current Release: 646 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 647 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 648 6492) iASL Compiler/Disassembler and Tools: 650 651iASL: Implemented Switch() with While(1) so that Break works correctly. This 652change correctly implements the Switch operator with a surrounding While(1) 653so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 654 655iASL: Added a message if a package initializer list is shorter than package 656length. Adds a new remark for a Package() declaration if an initializer list 657exists, but is shorter than the declared length of the package. Although 658technically legal, this is probably a coding error and it is seen in the 659field. ACPICA BZ 815. Lin Ming, Bob Moore. 660 661iASL: Fixed a problem where the compiler could fault after the maximum number 662of errors was reached (200). 663 664acpixtract: Fixed a possible warning for pointer cast if the compiler warning 665level set very high. 666 667---------------------------------------- 66813 October 2009. Summary of changes for version 20091013: 669 6701) ACPI CA Core Subsystem: 671 672Fixed a problem where an Operation Region _REG method could be executed more 673than once. If a custom address space handler is installed by the host before 674the "initialize operation regions" phase of the ACPICA initialization, any 675_REG methods for that address space could be executed twice. This change 676fixes the problem. ACPICA BZ 427. Lin Ming. 677 678Fixed a possible memory leak for the Scope() ASL operator. When the exact 679invocation of "Scope(\)" is executed (change scope to root), one internal 680operand object was leaked. Lin Ming. 681 682Implemented a run-time repair for the _MAT predefined method. If the _MAT 683return value is defined as a Field object in the AML, and the field 684size is less than or equal to the default width of an integer (32 or 64),_MAT 685can incorrectly return an Integer instead of a Buffer. ACPICA now 686automatically repairs this problem. ACPICA BZ 810. 687 688Implemented a run-time repair for the _BIF and _BIX predefined methods. The 689"OEM Information" field is often incorrectly returned as an Integer with 690value zero if the field is not supported by the platform. This is due to an 691ambiguity in the ACPI specification. The field should always be a string. 692ACPICA now automatically repairs this problem by returning a NULL string 693within the returned Package. ACPICA BZ 807. 694 695Example Code and Data Size: These are the sizes for the OS-independent 696acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 697debug version of the code includes the debug output trace mechanism and has a 698much larger code and data size. 699 700 Previous Release: 701 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 702 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 703 Current Release: 704 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 705 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 706 7072) iASL Compiler/Disassembler and Tools: 708 709Disassembler: Fixed a problem where references to external symbols that 710contained one or more parent-prefixes (carats) were not handled correctly, 711possibly causing a fault. ACPICA BZ 806. Lin Ming. 712 713Disassembler: Restructured the code so that all functions that handle 714external symbols are in a single module. One new file is added, 715common/dmextern.c. 716 717AML Debugger: Added a max count argument for the Batch command (which 718executes multiple predefined methods within the namespace.) 719 720iASL: Updated the compiler documentation (User Reference.) Available at 721http://www.acpica.org/documentation/. ACPICA BZ 750. 722 723AcpiXtract: Updated for Lint and other formatting changes. Close all open 724files. 725 726---------------------------------------- 72703 September 2009. Summary of changes for version 20090903: 728 7291) ACPI CA Core Subsystem: 730 731For Windows Vista compatibility, added the automatic execution of an _INI 732method located at the namespace root (\_INI). This method is executed at 733table load time. This support is in addition to the automatic execution of 734\_SB._INI. Lin Ming. 735 736Fixed a possible memory leak in the interpreter for AML package objects if 737the package initializer list is longer than the defined size of the package. 738This apparently can only happen if the BIOS changes the package size on the 739fly (seen in a _PSS object), as ASL compilers do not allow this. The 740interpreter will truncate the package to the defined size (and issue an error 741message), but previously could leave the extra objects undeleted if they were 742pre-created during the argument processing (such is the case if the package 743consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 744 745Fixed a problem seen when a Buffer or String is stored to itself via ASL. 746This has been reported in the field. Previously, ACPICA would zero out the 747buffer/string. Now, the operation is treated as a noop. Provides Windows 748compatibility. ACPICA BZ 803. Lin Ming. 749 750Removed an extraneous error message for ASL constructs of the form 751Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 752are seen in many BIOSs and are once again treated as NOOPs and no error is 753emitted when they are encountered. ACPICA BZ 785. 754 755Fixed an extraneous warning message if a _DSM reserved method returns a 756Package object. _DSM can return any type of object, so validation on the 757return type cannot be performed. ACPICA BZ 802. 758 759Example Code and Data Size: These are the sizes for the OS-independent 760acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 761debug version of the code includes the debug output trace mechanism and has a 762much larger code and data size. 763 764 Previous Release: 765 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 766 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 767 Current Release: 768 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 769 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 770 7712) iASL Compiler/Disassembler and Tools: 772 773iASL: Fixed a problem with the use of the Alias operator and Resource 774Templates. The correct alias is now constructed and no error is emitted. 775ACPICA BZ 738. 776 777iASL: Implemented the -I option to specify additional search directories for 778include files. Allows multiple additional search paths for include files. 779Directories are searched in the order specified on the command line (after 780the local directory is searched.) ACPICA BZ 800. 781 782iASL: Fixed a problem where the full pathname for include files was not 783emitted for warnings/errors. This caused the IDE support to not work 784properly. ACPICA BZ 765. 785 786iASL: Implemented the -@ option to specify a Windows-style response file 787containing additional command line options. ACPICA BZ 801. 788 789AcpiExec: Added support to load multiple AML files simultaneously (such as a 790DSDT and multiple SSDTs). Also added support for wildcards within the AML 791pathname. These features allow all machine tables to be easily loaded and 792debugged together. ACPICA BZ 804. 793 794Disassembler: Added missing support for disassembly of HEST table Error Bank 795subtables. 796 797---------------------------------------- 79830 July 2009. Summary of changes for version 20090730: 799 800The ACPI 4.0 implementation for ACPICA is complete with this release. 801 8021) ACPI CA Core Subsystem: 803 804ACPI 4.0: Added header file support for all new and changed ACPI tables. 805Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 806for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 807EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 808have been some ACPI 4.0 changes to other existing tables. Split the large 809actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 810 811ACPI 4.0: Implemented predefined name validation for all new names. There are 81231 new names in ACPI 4.0. The predefined validation module was split into two 813files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 814 815Implemented support for so-called "module-level executable code". This is 816executable AML code that exists outside of any control method and is intended 817to be executed at table load time. Although illegal since ACPI 2.0, this type 818of code still exists and is apparently still being created. Blocks of this 819code are now detected and executed as intended. Currently, the code blocks 820must exist under either an If, Else, or While construct; these are the 821typical cases seen in the field. ACPICA BZ 762. Lin Ming. 822 823Implemented an automatic dynamic repair for predefined names that return 824nested Package objects. This applies to predefined names that are defined to 825return a variable-length Package of sub-packages. If the number of sub- 826packages is one, BIOS code is occasionally seen that creates a simple single 827package with no sub-packages. This code attempts to fix the problem by 828wrapping a new package object around the existing package. These methods can 829be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 830790. 831 832Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 833The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 834BZ 793. 835 836Fixed a problem with AcpiReset where the reset would silently fail if the 837register was one of the protected I/O ports. AcpiReset now bypasses the port 838validation mechanism. This may eventually be driven into the AcpiRead/Write 839interfaces. 840 841Fixed a regression related to the recent update of the AcpiRead/Write 842interfaces. A sleep/suspend could fail if the optional PM2 Control register 843does not exist during an attempt to write the Bus Master Arbitration bit. 844(However, some hosts already delete the code that writes this bit, and the 845code may in fact be obsolete at this date.) ACPICA BZ 799. 846 847Fixed a problem where AcpiTerminate could fault if inadvertently called twice 848in succession. ACPICA BZ 795. 849 850Example Code and Data Size: These are the sizes for the OS-independent 851acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 852debug version of the code includes the debug output trace mechanism and has a 853much larger code and data size. 854 855 Previous Release: 856 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 857 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 858 Current Release: 859 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 860 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 861 8622) iASL Compiler/Disassembler and Tools: 863 864ACPI 4.0: Implemented disassembler support for all new ACPI tables and 865changes to existing tables. ACPICA BZ 775. 866 867---------------------------------------- 86825 June 2009. Summary of changes for version 20090625: 869 870The ACPI 4.0 Specification was released on June 16 and is available at 871www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 872continue for the next few releases. 873 8741) ACPI CA Core Subsystem: 875 876ACPI 4.0: Implemented interpreter support for the IPMI operation region 877address space. Includes support for bi-directional data buffers and an IPMI 878address space handler (to be installed by an IPMI device driver.) ACPICA BZ 879773. Lin Ming. 880 881ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 882support in both the header files and the disassembler. 883 884Completed a major update for the AcpiGetObjectInfo external interface. 885Changes include: 886 - Support for variable, unlimited length HID, UID, and CID strings. 887 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 888 - Call the _SxW power methods on behalf of a device object. 889 - Determine if a device is a PCI root bridge. 890 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 891These changes will require an update to all callers of this interface. See 892the updated ACPICA Programmer Reference for details. One new source file has 893been added - utilities/utids.c. ACPICA BZ 368, 780. 894 895Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 896transfers. The Value parameter has been extended from 32 bits to 64 bits in 897order to support new ACPI 4.0 tables. These changes will require an update to 898all callers of these interfaces. See the ACPICA Programmer Reference for 899details. ACPICA BZ 768. 900 901Fixed several problems with AcpiAttachData. The handler was not invoked when 902the host node was deleted. The data sub-object was not automatically deleted 903when the host node was deleted. The interface to the handler had an unused 904parameter, this was removed. ACPICA BZ 778. 905 906Enhanced the function that dumps ACPI table headers. All non-printable 907characters in the string fields are now replaced with '?' (Signature, OemId, 908OemTableId, and CompilerId.) ACPI tables with non-printable characters in 909these fields are occasionally seen in the field. ACPICA BZ 788. 910 911Fixed a problem with predefined method repair code where the code that 912attempts to repair/convert an object of incorrect type is only executed on 913the first time the predefined method is called. The mechanism that disables 914warnings on subsequent calls was interfering with the repair mechanism. 915ACPICA BZ 781. 916 917Fixed a possible memory leak in the predefined validation/repair code when a 918buffer is automatically converted to an expected string object. 919 920Removed obsolete 16-bit files from the distribution and from the current git 921tree head. ACPICA BZ 776. 922 923Example Code and Data Size: These are the sizes for the OS-independent 924acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 925debug version of the code includes the debug output trace mechanism and has a 926much larger code and data size. 927 928 Previous Release: 929 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 930 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 931 Current Release: 932 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 933 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 934 9352) iASL Compiler/Disassembler and Tools: 936 937ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 938operation region keyword. ACPICA BZ 771, 772. Lin Ming. 939 940ACPI 4.0: iASL - implemented compile-time validation support for all new 941predefined names and control methods (31 total). ACPICA BZ 769. 942 943---------------------------------------- 94421 May 2009. Summary of changes for version 20090521: 945 9461) ACPI CA Core Subsystem: 947 948Disabled the preservation of the SCI enable bit in the PM1 control register. 949The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 950a "preserved" bit - "OSPM always preserves this bit position", section 9514.7.3.2.1. However, some machines fail if this bit is in fact preserved 952because the bit needs to be explicitly set by the OS as a workaround. No 953machines fail if the bit is not preserved. Therefore, ACPICA no longer 954attempts to preserve this bit. 955 956Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 957incorrectly formed _PRT package could cause a fault. Added validation to 958ensure that each package element is actually a sub-package. 959 960Implemented a new interface to install or override a single control method, 961AcpiInstallMethod. This interface is useful when debugging in order to repair 962an existing method or to install a missing method without having to override 963the entire ACPI table. See the ACPICA Programmer Reference for use and 964examples. Lin Ming, Bob Moore. 965 966Fixed several reference count issues with the DdbHandle object that is 967created from a Load or LoadTable operator. Prevent premature deletion of the 968object. Also, mark the object as invalid once the table has been unloaded. 969This is needed because the handle itself may not be deleted after the table 970unload, depending on whether it has been stored in a named object by the 971caller. Lin Ming. 972 973Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 974mutexes of the same sync level are acquired but then not released in strict 975opposite order, the internally maintained Current Sync Level becomes confused 976and can cause subsequent execution errors. ACPICA BZ 471. 977 978Changed the allowable release order for ASL mutex objects. The ACPI 4.0 979specification has been changed to make the SyncLevel for mutex objects more 980useful. When releasing a mutex, the SyncLevel of the mutex must now be the 981same as the current sync level. This makes more sense than the previous rule 982(SyncLevel less than or equal). This change updates the code to match the 983specification. 984 985Fixed a problem with the local version of the AcpiOsPurgeCache function. The 986(local) cache must be locked during all cache object deletions. Andrew 987Baumann. 988 989Updated the Load operator to use operation region interfaces. This replaces 990direct memory mapping with region access calls. Now, all region accesses go 991through the installed region handler as they should. 992 993Simplified and optimized the NsGetNextNode function. Reduced parameter count 994and reduced code for this frequently used function. 995 996Example Code and Data Size: These are the sizes for the OS-independent 997acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 998debug version of the code includes the debug output trace mechanism and has a 999much larger code and data size. 1000 1001 Previous Release: 1002 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1003 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1004 Current Release: 1005 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1006 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1007 10082) iASL Compiler/Disassembler and Tools: 1009 1010Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1011with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1012after an invalid sub-table ID. 1013 1014---------------------------------------- 101522 April 2009. Summary of changes for version 20090422: 1016 10171) ACPI CA Core Subsystem: 1018 1019Fixed a compatibility issue with the recently released I/O port protection 1020mechanism. For windows compatibility, 1) On a port protection violation, 1021simply ignore the request and do not return an exception (allow the control 1022method to continue execution.) 2) If only part of the request overlaps a 1023protected port, read/write the individual ports that are not protected. Linux 1024BZ 13036. Lin Ming 1025 1026Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1027breaks into the AML debugger if the debugger is present. This matches the 1028ACPI-defined behavior. 1029 1030Fixed several possible warnings related to the use of the configurable 1031ACPI_THREAD_ID. This type can now be configured as either an integer or a 1032pointer with no warnings. Also fixes several warnings in printf-like 1033statements for the 64-bit build when the type is configured as a pointer. 1034ACPICA BZ 766, 767. 1035 1036Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1037warning options.) Examples include printf formats, aliasing, unused globals, 1038missing prototypes, missing switch default statements, use of non-ANSI 1039library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1040a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1041 1042Example Code and Data Size: These are the sizes for the OS-independent 1043acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1044debug version of the code includes the debug output trace mechanism and has a 1045much larger code and data size. 1046 1047 Previous Release: 1048 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1049 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1050 Current Release: 1051 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1052 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1053 10542) iASL Compiler/Disassembler and Tools: 1055 1056iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1057the 64-bit build. 1058 1059iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1060correctly digest Windows/DOS formatted files (with CR/LF). 1061 1062iASL: Added a new option for "quiet mode" (-va) that produces only the 1063compilation summary, not individual errors and warnings. Useful for large 1064batch compilations. 1065 1066AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1067timeout that can be used to detect hang conditions during execution of AML 1068code (includes both internal semaphores and AML-defined mutexes and events.) 1069 1070Added new makefiles for the generation of acpica in a generic unix-like 1071environment. These makefiles are intended to generate the acpica tools and 1072utilities from the original acpica git source tree structure. 1073 1074Test Suites: Updated and cleaned up the documentation files. Updated the 1075copyrights to 2009, affecting all source files. Use the new version of iASL 1076with quiet mode. Increased the number of available semaphores in the Windows 1077OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1078an alternate implementation of the semaphore timeout to allow aslts to 1079execute fully on Cygwin. 1080 1081---------------------------------------- 108220 March 2009. Summary of changes for version 20090320: 1083 10841) ACPI CA Core Subsystem: 1085 1086Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1087unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1088namespace walks (readers), but block a dynamic table unload until it can gain 1089exclusive write access to the namespace. This fixes a problem where a table 1090unload could (possibly catastrophically) delete the portion of the namespace 1091that is currently being examined by a walk. Adds a new file, utlock.c, that 1092implements the reader/writer lock mechanism. ACPICA BZ 749. 1093 1094Fixed a regression introduced in version 20090220 where a change to the FADT 1095handling could cause the ACPICA subsystem to access non-existent I/O ports. 1096 1097Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1098FADT can contain both 32-bit and 64-bit versions of these addresses. 1099Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1100versions were valid, but not equal, the 64-bit version was used. This was 1101found to cause some machines to fail. Now, in this case, the 32-bit version 1102is used instead. This now matches the Windows behavior. 1103 1104Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1105compatibility and protects the standard PC I/O ports from access via AML 1106code. Adds a new file, hwvalid.c 1107 1108Fixed a possible extraneous warning message from the FADT support. The 1109message warns of a 32/64 length mismatch between the legacy and GAS 1110definitions for a register. 1111 1112Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1113made obsolete by the port protection mechanism above. It was previously used 1114to validate the entire address range of an operation region, which could be 1115incorrect if the range included illegal ports, but fields within the 1116operation region did not actually access those ports. Validation is now 1117performed on a per-field basis instead of the entire region. 1118 1119Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1120Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1121means a read/modify/write when writing to the register. However, for status 1122registers, writing a one means clear the event. Writing a zero means preserve 1123the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1124and the ACPICA code now simply always writes a zero to the ignored bit. 1125 1126Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1127per the ACPI specification, for the control registers, preserve 1128(read/modify/write) all bits that are defined as either reserved or ignored. 1129 1130Updated the handling of write-only bits in the PM1 A/B Control Registers. 1131When reading the register, zero the write-only bits as per the ACPI spec. 1132ACPICA BZ 443. Lin Ming. 1133 1134Removed "Linux" from the list of supported _OSI strings. Linux no longer 1135wants to reply true to this request. The Windows strings are the only paths 1136through the AML that are tested and known to work properly. 1137 1138 Previous Release: 1139 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1140 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1141 Current Release: 1142 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1143 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1144 11452) iASL Compiler/Disassembler and Tools: 1146 1147Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1148aetables.c 1149 1150---------------------------------------- 115120 February 2009. Summary of changes for version 20090220: 1152 11531) ACPI CA Core Subsystem: 1154 1155Optimized the ACPI register locking. Removed locking for reads from the ACPI 1156bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1157not required when reading the single-bit registers. The 1158AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1159This will improve performance for reads on these registers. ACPICA BZ 760. 1160 1161Fixed the parameter validation for AcpiRead/Write. Now return 1162AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1163the register has an address of zero. Previously, these cases simply returned 1164AE_OK. For optional registers such as PM1B status/enable/control, the caller 1165should check for a valid register address before calling. ACPICA BZ 748. 1166 1167Renamed the external ACPI bit register access functions. Renamed 1168AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1169functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1170Also, restructured the code for these functions by simplifying the code path 1171and condensing duplicate code to reduce code size. 1172 1173Added new functions to transparently handle the possibly split PM1 A/B 1174registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1175now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1176746. 1177 1178Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1179This function writes both of the PM1 control registers (A/B). These registers 1180are different than the PM1 A/B status and enable registers in that different 1181values can be written to the A/B registers. Most notably, the SLP_TYP bits 1182can be different, as per the values returned from the _Sx predefined methods. 1183 1184Removed an extra register write within AcpiHwClearAcpiStatus. This function 1185was writing an optional PM1B status register twice. The existing call to the 1186low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1187register. ACPICA BZ 751. 1188 1189Split out the PM1 Status registers from the FADT. Added new globals for these 1190registers (A/B), similar to the way the PM1 Enable registers are handled. 1191Instead of overloading the FADT Event Register blocks. This makes the code 1192clearer and less prone to error. 1193 1194Fixed the warning message for when the platform contains too many ACPI tables 1195for the default size of the global root table data structure. The calculation 1196for the truncation value was incorrect. 1197 1198Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1199obsolete macro, since it is now a simple reference to ->common.type. There 1200were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1201 1202Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1203TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1204simply SLEEP_TYPE. ACPICA BZ 754. 1205 1206Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1207function is only needed on 64-bit host operating systems and is thus not 1208included for 32-bit hosts. 1209 1210Debug output: print the input and result for invocations of the _OSI reserved 1211control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1212verbosity of this debug level. Len Brown. 1213 1214Example Code and Data Size: These are the sizes for the OS-independent 1215acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1216debug version of the code includes the debug output trace mechanism and has a 1217much larger code and data size. 1218 1219 Previous Release: 1220 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1221 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1222 Current Release: 1223 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1224 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1225 12262) iASL Compiler/Disassembler and Tools: 1227 1228Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1229various legal performance profiles. 1230 1231---------------------------------------- 123223 January 2009. Summary of changes for version 20090123: 1233 12341) ACPI CA Core Subsystem: 1235 1236Added the 2009 copyright to all module headers and signons. This affects 1237virtually every file in the ACPICA core subsystem, the iASL compiler, and 1238the tools/utilities. 1239 1240Implemented a change to allow the host to override any ACPI table, including 1241dynamically loaded tables. Previously, only the DSDT could be replaced by the 1242host. With this change, the AcpiOsTableOverride interface is called for each 1243table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1244a table is dynamically loaded via the AML Load operator. 1245 1246Updated FADT flag definitions, especially the Boot Architecture flags. 1247 1248Debugger: For the Find command, automatically pad the input ACPI name with 1249underscores if the name is shorter than 4 characters. This enables a match 1250with the actual namespace entry which is itself padded with underscores. 1251 1252Example Code and Data Size: These are the sizes for the OS-independent 1253acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1254debug version of the code includes the debug output trace mechanism and has a 1255much larger code and data size. 1256 1257 Previous Release: 1258 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1259 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1260 Current Release: 1261 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1262 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1263 12642) iASL Compiler/Disassembler and Tools: 1265 1266Fix build error under Bison-2.4. 1267 1268Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1269flags. Now decode all flags, regardless of the FADT version. Flag output 1270includes the FADT version which first defined each flag. 1271 1272The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1273DSDT). Windows only. 1274 1275---------------------------------------- 127604 December 2008. Summary of changes for version 20081204: 1277 12781) ACPI CA Core Subsystem: 1279 1280The ACPICA Programmer Reference has been completely updated and revamped for 1281this release. This includes updates to the external interfaces, OSL 1282interfaces, the overview sections, and the debugger reference. 1283 1284Several new ACPICA interfaces have been implemented and documented in the 1285programmer reference: 1286AcpiReset - Writes the reset value to the FADT-defined reset register. 1287AcpiDisableAllGpes - Disable all available GPEs. 1288AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1289AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1290AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1291AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1292AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1293 1294Most of the public ACPI hardware-related interfaces have been moved to a new 1295file, components/hardware/hwxface.c 1296 1297Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1298register lengths within the FADT are now used, and the low level ACPI 1299register access no longer hardcodes the ACPI register lengths. Given that 1300there may be some risk in actually trusting the FADT register lengths, a run- 1301time option was added to fall back to the default hardcoded lengths if the 1302FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1303option is set to true for now, and a warning is issued if a suspicious FADT 1304register length is overridden with the default value. 1305 1306Fixed a reference count issue in NsRepairObject. This problem was introduced 1307in version 20081031 as part of a fix to repair Buffer objects within 1308Packages. Lin Ming. 1309 1310Added semaphore support to the Linux/Unix application OS-services layer 1311(OSL). ACPICA BZ 448. Lin Ming. 1312 1313Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1314be implemented in the OSL, or will binary semaphores be used instead. 1315 1316Example Code and Data Size: These are the sizes for the OS-independent 1317acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1318debug version of the code includes the debug output trace mechanism and has a 1319much larger code and data size. 1320 1321 Previous Release: 1322 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1323 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1324 Current Release: 1325 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1326 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1327 13282) iASL Compiler/Disassembler and Tools: 1329 1330iASL: Completed the '-e' option to include additional ACPI tables in order to 1331aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1332Ming. 1333 1334iASL: Removed the "named object in while loop" error. The compiler cannot 1335determine how many times a loop will execute. ACPICA BZ 730. 1336 1337Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1338BZ 743. 1339 1340Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1341 1342---------------------------------------- 134331 October 2008. Summary of changes for version 20081031: 1344 13451) ACPI CA Core Subsystem: 1346 1347Restructured the ACPICA header files into public/private. acpi.h now includes 1348only the "public" acpica headers. All other acpica headers are "private" and 1349should not be included by acpica users. One new file, accommon.h is used to 1350include the commonly used private headers for acpica code generation. Future 1351plans include moving all private headers to a new subdirectory. 1352 1353Implemented an automatic Buffer->String return value conversion for 1354predefined ACPI methods. For these methods (such as _BIF), added automatic 1355conversion for return objects that are required to be a String, but a Buffer 1356was found instead. This can happen when reading string battery data from an 1357operation region, because it used to be difficult to convert the data from 1358buffer to string from within the ASL. Ensures that the host OS is provided 1359with a valid null-terminated string. Linux BZ 11822. 1360 1361Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1362into two: one for the 32-bit vector, another for the 64-bit vector. This is 1363required because the host OS must setup the wake much differently for each 1364vector (real vs. protected mode, etc.) and the interface itself should not be 1365deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1366interface, as it served no purpose (only the firmware reads the vector, OS 1367only writes the vector.) ACPICA BZ 731. 1368 1369Implemented a mechanism to escape infinite AML While() loops. Added a loop 1370counter to force exit from AML While loops if the count becomes too large. 1371This can occur in poorly written AML when the hardware does not respond 1372within a while loop and the loop does not implement a timeout. The maximum 1373loop count is configurable. A new exception code is returned when a loop is 1374broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1375 1376Optimized the execution of AML While loops. Previously, a control state 1377object was allocated and freed for each execution of the loop. The 1378optimization is to simply reuse the control state for each iteration. This 1379speeds up the raw loop execution time by about 5%. 1380 1381Enhanced the implicit return mechanism. For Windows compatibility, return an 1382implicit integer of value zero for methods that contain no executable code. 1383Such methods are seen in the field as stubs (presumably), and can cause 1384drivers to fail if they expect a return value. Lin Ming. 1385 1386Allow multiple backslashes as root prefixes in namepaths. In a fully 1387qualified namepath, allow multiple backslash prefixes. This can happen (and 1388is seen in the field) because of the use of a double-backslash in strings 1389(since backslash is the escape character) causing confusion. ACPICA BZ 739 1390Lin Ming. 1391 1392Emit a warning if two different FACS or DSDT tables are discovered in the 1393FADT. Checks if there are two valid but different addresses for the FACS and 1394DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1395 1396Consolidated the method argument count validation code. Merged the code that 1397validates control method argument counts into the predefined validation 1398module. Eliminates possible multiple warnings for incorrect argument counts. 1399 1400Implemented ACPICA example code. Includes code for ACPICA initialization, 1401handler installation, and calling a control method. Available at 1402source/tools/examples. 1403 1404Added a global pointer for FACS table to simplify internal FACS access. Use 1405the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1406This simplifies the code for the Global Lock and the Firmware Waking 1407Vector(s). 1408 1409Example Code and Data Size: These are the sizes for the OS-independent 1410acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1411debug version of the code includes the debug output trace mechanism and has a 1412much larger code and data size. 1413 1414 Previous Release: 1415 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1416 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1417 Current Release: 1418 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1419 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1420 14212) iASL Compiler/Disassembler and Tools: 1422 1423iASL: Improved disassembly of external method calls. Added the -e option to 1424allow the inclusion of additional ACPI tables to help with the disassembly of 1425method invocations and the generation of external declarations during the 1426disassembly. Certain external method invocations cannot be disassembled 1427properly without the actual declaration of the method. Use the -e option to 1428include the table where the external method(s) are actually declared. Most 1429useful for disassembling SSDTs that make method calls back to the master 1430DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1431-e dsdt.aml ssdt1.aml 1432 1433iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1434problem where the use of an alias within a namepath would result in a not 1435found error or cause the compiler to fault. Also now allows forward 1436references from the Alias operator itself. ACPICA BZ 738. 1437 1438---------------------------------------- 143926 September 2008. Summary of changes for version 20080926: 1440 14411) ACPI CA Core Subsystem: 1442 1443Designed and implemented a mechanism to validate predefined ACPI methods and 1444objects. This code validates the predefined ACPI objects (objects whose names 1445start with underscore) that appear in the namespace, at the time they are 1446evaluated. The argument count and the type of the returned object are 1447validated against the ACPI specification. The purpose of this validation is 1448to detect problems with the BIOS-implemented predefined ACPI objects before 1449the results are returned to the ACPI-related drivers. Future enhancements may 1450include actual repair of incorrect return objects where possible. Two new 1451files are nspredef.c and acpredef.h. 1452 1453Fixed a fault in the AML parser if a memory allocation fails during the Op 1454completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1455 1456Fixed an issue with implicit return compatibility. This change improves the 1457implicit return mechanism to be more compatible with the MS interpreter. Lin 1458Ming, ACPICA BZ 349. 1459 1460Implemented support for zero-length buffer-to-string conversions. Allow zero 1461length strings during interpreter buffer-to-string conversions. For example, 1462during the ToDecimalString and ToHexString operators, as well as implicit 1463conversions. Fiodor Suietov, ACPICA BZ 585. 1464 1465Fixed two possible memory leaks in the error exit paths of 1466AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1467similar in that they use a stack of state objects in order to eliminate 1468recursion. The stack must be fully unwound and deallocated if an error 1469occurs. Lin Ming. ACPICA BZ 383. 1470 1471Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1472ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1473Moore ACPICA BZ 442. 1474 1475Removed the obsolete version number in module headers. Removed the 1476"$Revision" number that appeared in each module header. This version number 1477was useful under SourceSafe and CVS, but has no meaning under git. It is not 1478only incorrect, it could also be misleading. 1479 1480Example Code and Data Size: These are the sizes for the OS-independent 1481acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1482debug version of the code includes the debug output trace mechanism and has a 1483much larger code and data size. 1484 1485 Previous Release: 1486 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1487 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1488 Current Release: 1489 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1490 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1491 1492---------------------------------------- 149329 August 2008. Summary of changes for version 20080829: 1494 14951) ACPI CA Core Subsystem: 1496 1497Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1498Reference. Changes include the elimination of cheating on the Object field 1499for the DdbHandle subtype, addition of a reference class field to 1500differentiate the various reference types (instead of an AML opcode), and the 1501cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1502 1503Reduce an error to a warning for an incorrect method argument count. 1504Previously aborted with an error if too few arguments were passed to a 1505control method via the external ACPICA interface. Now issue a warning instead 1506and continue. Handles the case where the method inadvertently declares too 1507many arguments, but does not actually use the extra ones. Applies mainly to 1508the predefined methods. Lin Ming. Linux BZ 11032. 1509 1510Disallow the evaluation of named object types with no intrinsic value. Return 1511AE_TYPE for objects that have no value and therefore evaluation is undefined: 1512Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1513these types were allowed, but an exception would be generated at some point 1514during the evaluation. Now, the error is generated up front. 1515 1516Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1517(nsnames.c). Fixes a leak in the error exit path. 1518 1519Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1520levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1521interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1522ACPI_LV_EVENTS. 1523 1524Removed obsolete and/or unused exception codes from the acexcep.h header. 1525There is the possibility that certain device drivers may be affected if they 1526use any of these exceptions. 1527 1528The ACPICA documentation has been added to the public git source tree, under 1529acpica/documents. Included are the ACPICA programmer reference, the iASL 1530compiler reference, and the changes.txt release logfile. 1531 1532Example Code and Data Size: These are the sizes for the OS-independent 1533acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1534debug version of the code includes the debug output trace mechanism and has a 1535much larger code and data size. 1536 1537 Previous Release: 1538 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1539 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1540 Current Release: 1541 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1542 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1543 15442) iASL Compiler/Disassembler and Tools: 1545 1546Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1547defines _SCP with 3 arguments. Previous versions defined it with only 1 1548argument. iASL now allows both definitions. 1549 1550iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1551length subtables when disassembling ACPI tables. Also fixed a couple of 1552errors where a full 16-bit table type field was not extracted from the input 1553properly. 1554 1555acpisrc: Improve comment counting mechanism for generating source code 1556statistics. Count first and last lines of multi-line comments as whitespace, 1557not comment lines. Handle Linux legal header in addition to standard acpica 1558header. 1559 1560---------------------------------------- 1561 156229 July 2008. Summary of changes for version 20080729: 1563 15641) ACPI CA Core Subsystem: 1565 1566Fix a possible deadlock in the GPE dispatch. Remove call to 1567AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1568to acquire the GPE lock but can deadlock since the GPE lock is already held 1569at dispatch time. This code was introduced in version 20060831 as a response 1570to Linux BZ 6881 and has since been removed from Linux. 1571 1572Add a function to dereference returned reference objects. Examines the return 1573object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1574automatically dereferenced in an attempt to return something useful (these 1575reference types cannot be converted into an external ACPI_OBJECT.) Provides 1576MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1577 1578x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1579subtables for the MADT and one new subtable for the SRAT. Includes 1580disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1581Specification, June 2008. 1582 1583Additional error checking for pathname utilities. Add error check after all 1584calls to AcpiNsGetPathnameLength. Add status return from 1585AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1586to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1587 1588Return status from the global init function AcpiUtGlobalInitialize. This is 1589used by both the kernel subsystem and the utilities such as iASL compiler. 1590The function could possibly fail when the caches are initialized. Yang Yi. 1591 1592Add a function to decode reference object types to strings. Created for 1593improved error messages. 1594 1595Improve object conversion error messages. Better error messages during object 1596conversion from internal to the external ACPI_OBJECT. Used for external calls 1597to AcpiEvaluateObject. 1598 1599Example Code and Data Size: These are the sizes for the OS-independent 1600acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1601debug version of the code includes the debug output trace mechanism and has a 1602much larger code and data size. 1603 1604 Previous Release: 1605 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1606 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1607 Current Release: 1608 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1609 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1610 16112) iASL Compiler/Disassembler and Tools: 1612 1613Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1614introduced in version 20080701. If the object being evaluated (via execute 1615command) is not a method, the debugger can hang while trying to obtain non- 1616existent parameters. 1617 1618iASL: relax error for using reserved "_T_x" identifiers. These names can 1619appear in a disassembled ASL file if they were emitted by the original 1620compiler. Instead of issuing an error or warning and forcing the user to 1621manually change these names, issue a remark instead. 1622 1623iASL: error if named object created in while loop. Emit an error if any named 1624object is created within a While loop. If allowed, this code will generate a 1625run-time error on the second iteration of the loop when an attempt is made to 1626create the same named object twice. ACPICA bugzilla 730. 1627 1628iASL: Support absolute pathnames for include files. Add support for absolute 1629pathnames within the Include operator. previously, only relative pathnames 1630were supported. 1631 1632iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1633The ACPI spec requires one interrupt minimum. BZ 423 1634 1635iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1636Handles the case for the Interrupt Resource Descriptor where 1637the ResourceSource argument is omitted but ResourceSourceIndex 1638is present. Now leave room for the Index. BZ 426 1639 1640iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1641where an error message is emitted if the target does not exist. BZ 516 1642 1643iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1644(get ACPI tables on Windows). This was apparently broken in version 20070919. 1645 1646AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1647the EOF happens immediately after the last table in the input file. Print 1648completion message. Previously, no message was displayed in this case. 1649 1650---------------------------------------- 165101 July 2008. Summary of changes for version 20080701: 1652 16530) Git source tree / acpica.org 1654 1655Fixed a problem where a git-clone from http would not transfer the entire 1656source tree. 1657 16581) ACPI CA Core Subsystem: 1659 1660Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1661enable bit. Now performs a read-change-write of the enable register instead 1662of simply writing out the cached enable mask. This will prevent inadvertent 1663enabling of GPEs if a rogue GPE is received during initialization (before GPE 1664handlers are installed.) 1665 1666Implemented a copy for dynamically loaded tables. Previously, dynamically 1667loaded tables were simply mapped - but on some machines this memory is 1668corrupted after suspend. Now copy the table to a local buffer. For the 1669OpRegion case, added checksum verify. Use the table length from the table 1670header, not the region length. For the Buffer case, use the table length 1671also. Dennis Noordsij, Bob Moore. BZ 10734 1672 1673Fixed a problem where the same ACPI table could not be dynamically loaded and 1674unloaded more than once. Without this change, a table cannot be loaded again 1675once it has been loaded/unloaded one time. The current mechanism does not 1676unregister a table upon an unload. During a load, if the same table is found, 1677this no longer returns an exception. BZ 722 1678 1679Fixed a problem where the wrong descriptor length was calculated for the 1680EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1681are calculated as 12 bytes long, but the actual length in the internal 1682descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1683by Linn Crosetto. BZ 728 1684 1685Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1686by Load() did not have its reference count decremented during unload, leading 1687to a memory leak. Lin Ming. BZ 727 1688 1689Fixed a possible memory leak when deleting thermal/processor objects. Any 1690associated notify handlers (and objects) were not being deleted. Fiodor 1691Suietov. BZ 506 1692 1693Fixed the ordering of the ASCII names in the global mutex table to match the 1694actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1695Vegard Nossum. BZ 726 1696 1697Enhanced the AcpiGetObjectInfo interface to return the number of required 1698arguments if the object is a control method. Added this call to the debugger 1699so the proper number of default arguments are passed to a method. This 1700prevents a warning when executing methods from AcpiExec. 1701 1702Added a check for an invalid handle in AcpiGetObjectInfo. Return 1703AE_BAD_PARAMETER if input handle is invalid. BZ 474 1704 1705Fixed an extraneous warning from exconfig.c on the 64-bit build. 1706 1707Example Code and Data Size: These are the sizes for the OS-independent 1708acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1709debug version of the code includes the debug output trace mechanism and has a 1710much larger code and data size. 1711 1712 Previous Release: 1713 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1714 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1715 Current Release: 1716 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1717 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1718 17192) iASL Compiler/Disassembler and Tools: 1720 1721iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1722resource descriptor names. 1723 1724iASL: Detect invalid ASCII characters in input (windows version). Removed the 1725"-CF" flag from the flex compile, enables correct detection of non-ASCII 1726characters in the input. BZ 441 1727 1728iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1729"result of operation not used" warning when the DDB handle returned from 1730LoadTable is not used. The warning is not needed. BZ 590 1731 1732AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1733pass address of table to the AML. Added option to disable OpRegion simulation 1734to allow creation of an OpRegion with a real address that was passed to _CFG. 1735All of this allows testing of the Load and Unload operators from AcpiExec. 1736 1737Debugger: update tables command for unloaded tables. Handle unloaded tables 1738and use the standard table header output routine. 1739 1740---------------------------------------- 174109 June 2008. Summary of changes for version 20080609: 1742 17431) ACPI CA Core Subsystem: 1744 1745Implemented a workaround for reversed _PRT entries. A significant number of 1746BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1747change dynamically detects and repairs this problem. Provides compatibility 1748with MS ACPI. BZ 6859 1749 1750Simplified the internal ACPI hardware interfaces to eliminate the locking 1751flag parameter from Register Read/Write. Added a new external interface, 1752AcpiGetRegisterUnlocked. 1753 1754Fixed a problem where the invocation of a GPE control method could hang. This 1755was a regression introduced in 20080514. The new method argument count 1756validation mechanism can enter an infinite loop when a GPE method is 1757dispatched. Problem fixed by removing the obsolete code that passed GPE block 1758information to the notify handler via the control method parameter pointer. 1759 1760Fixed a problem where the _SST execution status was incorrectly returned to 1761the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 176220080514. _SST is optional and a NOT_FOUND exception should never be 1763returned. BZ 716 1764 1765Fixed a problem where a deleted object could be accessed from within the AML 1766parser. This was a regression introduced in version 20080123 as a fix for the 1767Unload operator. Lin Ming. BZ 10669 1768 1769Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1770and eliminated the use of a negative index in a loop. Operands are now 1771displayed in the correct order, not backwards. This also fixes a regression 1772introduced in 20080514 on 64-bit systems where the elimination of 1773ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1774 1775Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1776path did not delete a locally allocated structure. 1777 1778Updated definitions for the DMAR and SRAT tables to synchronize with the 1779current specifications. Includes disassembler support. 1780 1781Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1782loop termination value was used. Loop terminated on iteration early, missing 1783one mutex. Linn Crosetto 1784 1785Example Code and Data Size: These are the sizes for the OS-independent 1786acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1787debug version of the code includes the debug output trace mechanism and has a 1788much larger code and data size. 1789 1790 Previous Release: 1791 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1792 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1793 Current Release: 1794 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1795 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1796 17972) iASL Compiler/Disassembler and Tools: 1798 1799Disassembler: Implemented support for EisaId() within _CID objects. Now 1800disassemble integer _CID objects back to EisaId invocations, including 1801multiple integers within _CID packages. Includes single-step support for 1802debugger also. 1803 1804Disassembler: Added support for DMAR and SRAT table definition changes. 1805 1806---------------------------------------- 180714 May 2008. Summary of changes for version 20080514: 1808 18091) ACPI CA Core Subsystem: 1810 1811Fixed a problem where GPEs were enabled too early during the ACPICA 1812initialization. This could lead to "handler not installed" errors on some 1813machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1814ensures that all operation regions and devices throughout the namespace have 1815been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1816 1817Implemented a change to the enter sleep code. Moved execution of the _GTS 1818method to just before setting sleep enable bit. The execution was moved from 1819AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1820immediately before the SLP_EN bit is set, as per the ACPI specification. 1821Luming Yu, BZ 1653. 1822 1823Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1824the GPE, even if ACPICA thinks that that it is already disabled. It is 1825possible that the AML or some other code has enabled the GPE unbeknownst to 1826the ACPICA code. 1827 1828Fixed a problem with the Field operator where zero-length fields would return 1829an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1830field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1831 1832Implemented a fix for the Load operator, now load the table at the namespace 1833root. This reverts a change introduced in version 20071019. The table is now 1834loaded at the namespace root even though this goes against the ACPI 1835specification. This provides compatibility with other ACPI implementations. 1836The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1837 1838Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1839Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1840acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1841Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1842signatures, ACPICA must be compatible. BZ 10454. 1843 1844Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1845fields to the exception string arrays to eliminate a -1 subtraction on the 1846SubStatus field. 1847 1848Updated the debug tracking macros to reduce overall code and data size. 1849Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1850instead of pointers to static strings. Jan Beulich and Bob Moore. 1851 1852Implemented argument count checking in control method invocation via 1853AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1854many. This applies only to extern programmatic control method execution, not 1855method-to-method calls within the AML. Lin Ming. 1856 1857Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1858longer needed, especially with the removal of 16-bit support. It was replaced 1859mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 186032/64-bit platforms is required. 1861 1862Added the C const qualifier for appropriate string constants -- mostly 1863MODULE_NAME and printf format strings. Jan Beulich. 1864 1865Example Code and Data Size: These are the sizes for the OS-independent 1866acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1867debug version of the code includes the debug output trace mechanism and has a 1868much larger code and data size. 1869 1870 Previous Release: 1871 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1872 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1873 Current Release: 1874 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1875 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1876 18772) iASL Compiler/Disassembler and Tools: 1878 1879Implemented ACPI table revision ID validation in the disassembler. Zero is 1880always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1881means 32-bit and this is unusual. 2 or greater is 64-bit. 1882 1883---------------------------------------- 188421 March 2008. Summary of changes for version 20080321: 1885 18861) ACPI CA Core Subsystem: 1887 1888Implemented an additional change to the GPE support in order to suppress 1889spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1890disable incoming GPEs that are neither enabled nor disabled -- meaning that 1891the GPE is unknown to the system. This should prevent future interrupt floods 1892from that GPE. BZ 6217 (Zhang Rui) 1893 1894Fixed a problem where NULL package elements were not returned to the 1895AcpiEvaluateObject interface correctly. The element was simply ignored 1896instead of returning a NULL ACPI_OBJECT package element, potentially causing 1897a buffer overflow and/or confusing the caller who expected a fixed number of 1898elements. BZ 10132 (Lin Ming, Bob Moore) 1899 1900Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1901Qword), Field, BankField, and IndexField operators when invoked from inside 1902an executing control method. In this case, these operators created namespace 1903nodes that were incorrectly left marked as permanent nodes instead of 1904temporary nodes. This could cause a problem if there is race condition 1905between an exiting control method and a running namespace walk. (Reported by 1906Linn Crosetto) 1907 1908Fixed a problem where the CreateField and CreateXXXField operators would 1909incorrectly allow duplicate names (the name of the field) with no exception 1910generated. 1911 1912Implemented several changes for Notify handling. Added support for new Notify 1913values (ACPI 2.0+) and improved the Notify debug output. Notify on 1914PowerResource objects is no longer allowed, as per the ACPI specification. 1915(Bob Moore, Zhang Rui) 1916 1917All Reference Objects returned via the AcpiEvaluateObject interface are now 1918marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1919NULL objects - either NULL package elements or unresolved named references. 1920 1921Fixed a problem where an extraneous debug message was produced for package 1922objects (when debugging enabled). The message "Package List length larger 1923than NumElements count" is now produced in the correct case, and is now an 1924error message rather than a debug message. Added a debug message for the 1925opposite case, where NumElements is larger than the Package List (the package 1926will be padded out with NULL elements as per the ACPI spec.) 1927 1928Implemented several improvements for the output of the ASL "Debug" object to 1929clarify and keep all data for a given object on one output line. 1930 1931Fixed two size calculation issues with the variable-length Start Dependent 1932resource descriptor. 1933 1934Example Code and Data Size: These are the sizes for the OS-independent 1935acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1936debug version of the code includes the debug output trace mechanism and has 1937a much larger code and data size. 1938 1939 Previous Release: 1940 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1941 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1942 Current Release: 1943 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1944 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1945 19462) iASL Compiler/Disassembler and Tools: 1947 1948Fixed a problem with the use of the Switch operator where execution of the 1949containing method by multiple concurrent threads could cause an 1950AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1951actual Switch opcode, it must be simulated with local named temporary 1952variables and if/else pairs. The solution chosen was to mark any method that 1953uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1954 1955---------------------------------------- 195613 February 2008. Summary of changes for version 20080213: 1957 19581) ACPI CA Core Subsystem: 1959 1960Implemented another MS compatibility design change for GPE/Notify handling. 1961GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1962complete first. It is expected that the OSL will queue the enable request 1963behind all pending notify requests (may require changes to the local host OSL 1964in AcpiOsExecute). Alexey Starikovskiy. 1965 1966Fixed a problem where buffer and package objects passed as arguments to a 1967control method via the external AcpiEvaluateObject interface could cause an 1968AE_AML_INTERNAL exception depending on the order and type of operators 1969executed by the target control method. 1970 1971Fixed a problem where resource descriptor size optimization could cause a 1972problem when a _CRS resource template is passed to a _SRS method. The _SRS 1973resource template must use the same descriptors (with the same size) as 1974returned from _CRS. This change affects the following resource descriptors: 1975IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1976 1977Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1978objects did not perform an implicit conversion as it should. These types must 1979retain their initial type permanently as per the ACPI specification. However, 1980a CopyObject to all other object types should not perform an implicit 1981conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1982 1983Fixed a problem with the AcpiGetDevices interface where the mechanism to 1984match device CIDs did not examine the entire list of available CIDs, but 1985instead aborted on the first non-matching CID. Andrew Patterson. 1986 1987Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1988inadvertently changed to return a 16-bit value instead of a 32-bit value, 1989truncating the upper dword of a 64-bit value. This macro is only used to 1990display debug output, so no incorrect calculations were made. Also, 1991reimplemented the macro so that a 64-bit shift is not performed by 1992inefficient compilers. 1993 1994Added missing va_end statements that should correspond with each va_start 1995statement. 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 2000a much larger code and data size. 2001 2002 Previous Release: 2003 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2004 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2005 Current Release: 2006 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2007 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2008 20092) iASL Compiler/Disassembler and Tools: 2010 2011Implemented full disassembler support for the following new ACPI tables: 2012BERT, EINJ, and ERST. Implemented partial disassembler support for the 2013complicated HEST table. These tables support the Windows Hardware Error 2014Architecture (WHEA). 2015 2016---------------------------------------- 201723 January 2008. Summary of changes for version 20080123: 2018 20191) ACPI CA Core Subsystem: 2020 2021Added the 2008 copyright to all module headers and signons. This affects 2022virtually every file in the ACPICA core subsystem, the iASL compiler, and 2023the tools/utilities. 2024 2025Fixed a problem with the SizeOf operator when used with Package and Buffer 2026objects. These objects have deferred execution for some arguments, and the 2027execution is now completed before the SizeOf is executed. This problem caused 2028unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 20299558 2030 2031Implemented an enhancement to the interpreter "slack mode". In the absence of 2032an explicit return or an implicitly returned object from the last executed 2033opcode, a control method will now implicitly return an integer of value 0 for 2034Microsoft compatibility. (Lin Ming) BZ 392 2035 2036Fixed a problem with the Load operator where an exception was not returned in 2037the case where the table is already loaded. (Lin Ming) BZ 463 2038 2039Implemented support for the use of DDBHandles as an Indexed Reference, as per 2040the ACPI spec. (Lin Ming) BZ 486 2041 2042Implemented support for UserTerm (Method invocation) for the Unload operator 2043as per the ACPI spec. (Lin Ming) BZ 580 2044 2045Fixed a problem with the LoadTable operator where the OemId and OemTableId 2046input strings could cause unexpected failures if they were shorter than the 2047maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2048 2049Implemented support for UserTerm (Method invocation) for the Unload operator 2050as per the ACPI spec. (Lin Ming) BZ 580 2051 2052Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2053IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2054 2055Example Code and Data Size: These are the sizes for the OS-independent 2056acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2057debug version of the code includes the debug output trace mechanism and has 2058a much larger code and data size. 2059 2060 Previous Release: 2061 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2062 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2063 Current Release: 2064 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2065 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2066 20672) iASL Compiler/Disassembler and Tools: 2068 2069Implemented support in the disassembler for checksum validation on incoming 2070binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2071header dump at the start of the disassembly. 2072 2073Implemented additional debugging information in the namespace listing file 2074created during compilation. In addition to the namespace hierarchy, the full 2075pathname to each namespace object is displayed. 2076 2077Fixed a problem with the disassembler where invalid ACPI tables could cause 2078faults or infinite loops. 2079 2080Fixed an unexpected parse error when using the optional "parameter types" 2081list in a control method declaration. (Lin Ming) BZ 397 2082 2083Fixed a problem where two External declarations with the same name did not 2084cause an error (Lin Ming) BZ 509 2085 2086Implemented support for full TermArgs (adding Argx, Localx and method 2087invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2088Ming) BZ 583,587 2089 2090---------------------------------------- 209119 December 2007. Summary of changes for version 20071219: 2092 20931) ACPI CA Core Subsystem: 2094 2095Implemented full support for deferred execution for the TermArg string 2096arguments for DataTableRegion. This enables forward references and full 2097operand resolution for the three string arguments. Similar to OperationRegion 2098deferred argument execution.) Lin Ming. BZ 430 2099 2100Implemented full argument resolution support for the BankValue argument to 2101BankField. Previously, only constants were supported, now any TermArg may be 2102used. Lin Ming BZ 387, 393 2103 2104Fixed a problem with AcpiGetDevices where the search of a branch of the 2105device tree could be terminated prematurely. In accordance with the ACPI 2106specification, the search down the current branch is terminated if a device 2107is both not present and not functional (instead of just not present.) Yakui 2108Zhao. 2109 2110Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2111the underlying AML code changed the GPE enable registers. Now, any unknown 2112incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2113instead of simply ignored. Rui Zhang. 2114 2115Fixed a problem with Index Fields where the Index register was incorrectly 2116limited to a maximum of 32 bits. Now any size may be used. 2117 2118Fixed a couple memory leaks associated with "implicit return" objects when 2119the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2120 2121Example Code and Data Size: These are the sizes for the OS-independent 2122acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2123debug version of the code includes the debug output trace mechanism and has 2124a much larger code and data size. 2125 2126 Previous Release: 2127 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2128 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2129 Current Release: 2130 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2131 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2132 2133---------------------------------------- 213414 November 2007. Summary of changes for version 20071114: 2135 21361) ACPI CA Core Subsystem: 2137 2138Implemented event counters for each of the Fixed Events, the ACPI SCI 2139(interrupt) itself, and control methods executed. Named 2140AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2141should be useful for debugging and statistics. 2142 2143Implemented a new external interface, AcpiGetStatistics, to retrieve the 2144contents of the various event counters. Returns the current values for 2145AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2146AcpiMethodCount. The interface can be expanded in the future if new counters 2147are added. Device drivers should use this interface rather than access the 2148counters directly. 2149 2150Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2151the ShortDivide function worked incorrectly, causing problems with the BCD 2152functions with large input values. A truncation from 64-bit to 32-bit 2153inadvertently occurred. Internal BZ 435. Lin Ming 2154 2155Fixed a problem with Index references passed as method arguments. References 2156passed as arguments to control methods were dereferenced immediately (before 2157control was passed to the called method). The references are now correctly 2158passed directly to the called method. BZ 5389. Lin Ming 2159 2160Fixed a problem with CopyObject used in conjunction with the Index operator. 2161The reference was incorrectly dereferenced before the copy. The reference is 2162now correctly copied. BZ 5391. Lin Ming 2163 2164Fixed a problem with Control Method references within Package objects. These 2165references are now correctly generated. This completes the package 2166construction overhaul that began in version 20071019. 2167 2168Example Code and Data Size: These are the sizes for the OS-independent 2169acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2170debug version of the code includes the debug output trace mechanism and has 2171a much larger code and data size. 2172 2173 Previous Release: 2174 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2175 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2176 Current Release: 2177 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2178 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2179 2180 21812) iASL Compiler/Disassembler and Tools: 2182 2183The AcpiExec utility now installs handlers for all of the predefined 2184Operation Region types. New types supported are: PCI_Config, CMOS, and 2185PCIBARTarget. 2186 2187Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2188bit) address fields for the DSDT and FACS within the FADT were not being 2189used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2190and Bob Moore 2191 2192---------------------------------------- 219319 October 2007. Summary of changes for version 20071019: 2194 21951) ACPI CA Core Subsystem: 2196 2197Fixed a problem with the Alias operator when the target of the alias is a 2198named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2199Processor, and ThermalZone. In these cases, any children of the original 2200operator could not be accessed via the alias, potentially causing unexpected 2201AE_NOT_FOUND exceptions. (BZ 9067) 2202 2203Fixed a problem with the Package operator where all named references were 2204created as object references and left otherwise unresolved. According to the 2205ACPI specification, a Package can only contain Data Objects or references to 2206control methods. The implication is that named references to Data Objects 2207(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2208immediately upon package creation. This is the approach taken with this 2209change. References to all other named objects (Methods, Devices, Scopes, 2210etc.) are all now properly created as reference objects. (BZ 5328) 2211 2212Reverted a change to Notify handling that was introduced in version 221320070508. This version changed the Notify handling from asynchronous to 2214fully synchronous (Device driver Notify handling with respect to the Notify 2215ASL operator). It was found that this change caused more problems than it 2216solved and was removed by most users. 2217 2218Fixed a problem with the Increment and Decrement operators where the type of 2219the target object could be unexpectedly and incorrectly changed. (BZ 353) 2220Lin Ming. 2221 2222Fixed a problem with the Load and LoadTable operators where the table 2223location within the namespace was ignored. Instead, the table was always 2224loaded into the root or current scope. Lin Ming. 2225 2226Fixed a problem with the Load operator when loading a table from a buffer 2227object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2228 2229Fixed a problem with the Debug object where a store of a DdbHandle reference 2230object to the Debug object could cause a fault. 2231 2232Added a table checksum verification for the Load operator, in the case where 2233the load is from a buffer. (BZ 578). 2234 2235Implemented additional parameter validation for the LoadTable operator. The 2236length of the input strings SignatureString, OemIdString, and OemTableId are 2237now checked for maximum lengths. (BZ 582) Lin Ming. 2238 2239Example Code and Data Size: These are the sizes for the OS-independent 2240acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2241debug version of the code includes the debug output trace mechanism and has 2242a much larger code and data size. 2243 2244 Previous Release: 2245 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2246 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2247 Current Release: 2248 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2249 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2250 2251 22522) iASL Compiler/Disassembler: 2253 2254Fixed a problem where if a single file was specified and the file did not 2255exist, no error message was emitted. (Introduced with wildcard support in 2256version 20070917.) 2257 2258---------------------------------------- 225919 September 2007. Summary of changes for version 20070919: 2260 22611) ACPI CA Core Subsystem: 2262 2263Designed and implemented new external interfaces to install and remove 2264handlers for ACPI table-related events. Current events that are defined are 2265LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2266they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2267AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2268 2269Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2270(acpi_serialized option on Linux) could cause some systems to hang during 2271initialization. (Bob Moore) BZ 8171 2272 2273Fixed a problem where objects of certain types (Device, ThermalZone, 2274Processor, PowerResource) can be not found if they are declared and 2275referenced from within the same control method (Lin Ming) BZ 341 2276 2277Example Code and Data Size: These are the sizes for the OS-independent 2278acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2279debug version of the code includes the debug output trace mechanism and has 2280a much larger code and data size. 2281 2282 Previous Release: 2283 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2284 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2285 Current Release: 2286 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2287 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2288 2289 22902) iASL Compiler/Disassembler: 2291 2292Implemented support to allow multiple files to be compiled/disassembled in a 2293single invocation. This includes command line wildcard support for both the 2294Windows and Unix versions of the compiler. This feature simplifies the 2295disassembly and compilation of multiple ACPI tables in a single directory. 2296 2297---------------------------------------- 229808 May 2007. Summary of changes for version 20070508: 2299 23001) ACPI CA Core Subsystem: 2301 2302Implemented a Microsoft compatibility design change for the handling of the 2303Notify AML operator. Previously, notify handlers were dispatched and 2304executed completely asynchronously in a deferred thread. The new design 2305still executes the notify handlers in a different thread, but the original 2306thread that executed the Notify() now waits at a synchronization point for 2307the notify handler to complete. Some machines depend on a synchronous Notify 2308operator in order to operate correctly. 2309 2310Implemented support to allow Package objects to be passed as method 2311arguments to the external AcpiEvaluateObject interface. Previously, this 2312would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2313implemented since there were no reserved control methods that required it 2314until recently. 2315 2316Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2317contained invalid non-zero values in reserved fields could cause later 2318failures because these fields have meaning in later revisions of the FADT. 2319For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2320are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2321 2322Fixed a problem where the Global Lock handle was not properly updated if a 2323thread that acquired the Global Lock via executing AML code then attempted 2324to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2325Liu. 2326 2327Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2328could be corrupted if the interrupt being removed was at the head of the 2329list. Reported by Linn Crosetto. 2330 2331Example Code and Data Size: These are the sizes for the OS-independent 2332acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2333debug version of the code includes the debug output trace mechanism and has 2334a much larger code and data size. 2335 2336 Previous Release: 2337 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2338 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2339 Current Release: 2340 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2341 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2342 2343---------------------------------------- 234420 March 2007. Summary of changes for version 20070320: 2345 23461) ACPI CA Core Subsystem: 2347 2348Implemented a change to the order of interpretation and evaluation of AML 2349operand objects within the AML interpreter. The interpreter now evaluates 2350operands in the order that they appear in the AML stream (and the 2351corresponding ASL code), instead of in the reverse order (after the entire 2352operand list has been parsed). The previous behavior caused several subtle 2353incompatibilities with the Microsoft AML interpreter as well as being 2354somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2355 2356Implemented a change to the ACPI Global Lock support. All interfaces to the 2357global lock now allow the same thread to acquire the lock multiple times. 2358This affects the AcpiAcquireGlobalLock external interface to the global lock 2359as well as the internal use of the global lock to support AML fields -- a 2360control method that is holding the global lock can now simultaneously access 2361AML fields that require global lock protection. Previously, in both cases, 2362this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2363AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2364Controller. There is no change to the behavior of the AML Acquire operator, 2365as this can already be used to acquire a mutex multiple times by the same 2366thread. BZ 8066. With assistance from Alexey Starikovskiy. 2367 2368Fixed a problem where invalid objects could be referenced in the AML 2369Interpreter after error conditions. During operand evaluation, ensure that 2370the internal "Return Object" field is cleared on error and only valid 2371pointers are stored there. Caused occasional access to deleted objects that 2372resulted in "large reference count" warning messages. Valery Podrezov. 2373 2374Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2375deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2376Podrezov. 2377 2378Fixed an internal problem with the handling of result objects on the 2379interpreter result stack. BZ 7872. Valery Podrezov. 2380 2381Removed obsolete code that handled the case where AML_NAME_OP is the target 2382of a reference (Reference.Opcode). This code was no longer necessary. BZ 23837874. Valery Podrezov. 2384 2385Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2386remnant from the previously discontinued 16-bit support. 2387 2388Example Code and Data Size: These are the sizes for the OS-independent 2389acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2390debug version of the code includes the debug output trace mechanism and has 2391a much larger code and data size. 2392 2393 Previous Release: 2394 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2395 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2396 Current Release: 2397 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2398 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2399 2400---------------------------------------- 240126 January 2007. Summary of changes for version 20070126: 2402 24031) ACPI CA Core Subsystem: 2404 2405Added the 2007 copyright to all module headers and signons. This affects 2406virtually every file in the ACPICA core subsystem, the iASL compiler, and 2407the utilities. 2408 2409Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2410during a table load. A bad pointer was passed in the case where the DSDT is 2411overridden, causing a fault in this case. 2412 2413Example Code and Data Size: These are the sizes for the OS-independent 2414acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2415debug version of the code includes the debug output trace mechanism and has 2416a much larger code and data size. 2417 2418 Previous Release: 2419 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2420 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2421 Current Release: 2422 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2423 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2424 2425---------------------------------------- 242615 December 2006. Summary of changes for version 20061215: 2427 24281) ACPI CA Core Subsystem: 2429 2430Support for 16-bit ACPICA has been completely removed since it is no longer 2431necessary and it clutters the code. All 16-bit macros, types, and 2432conditional compiles have been removed, cleaning up and simplifying the code 2433across the entire subsystem. DOS support is no longer needed since the 2434bootable Linux firmware kit is now available. 2435 2436The handler for the Global Lock is now removed during AcpiTerminate to 2437enable a clean subsystem restart, via the implementation of the 2438AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2439HP) 2440 2441Implemented enhancements to the multithreading support within the debugger 2442to enable improved multithreading debugging and evaluation of the subsystem. 2443(Valery Podrezov) 2444 2445Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2446memory used during the execution, as well as the maximum memory consumed by 2447each of the various object types. (Valery Podrezov) 2448 2449Example Code and Data Size: These are the sizes for the OS-independent 2450acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2451debug version of the code includes the debug output trace mechanism and has 2452a much larger code and data size. 2453 2454 Previous Release: 2455 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2456 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2457 Current Release: 2458 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2459 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2460 2461 24622) iASL Compiler/Disassembler and Tools: 2463 2464AcpiExec: Implemented a new option (-m) to display full memory use 2465statistics upon subsystem/program termination. (Valery Podrezov) 2466 2467---------------------------------------- 246809 November 2006. Summary of changes for version 20061109: 2469 24701) ACPI CA Core Subsystem: 2471 2472Optimized the Load ASL operator in the case where the source operand is an 2473operation region. Simply map the operation region memory, instead of 2474performing a bytewise read. (Region must be of type SystemMemory, see 2475below.) 2476 2477Fixed the Load ASL operator for the case where the source operand is a 2478region field. A buffer object is also allowed as the source operand. BZ 480 2479 2480Fixed a problem where the Load ASL operator allowed the source operand to be 2481an operation region of any type. It is now restricted to regions of type 2482SystemMemory, as per the ACPI specification. BZ 481 2483 2484Additional cleanup and optimizations for the new Table Manager code. 2485 2486AcpiEnable will now fail if all of the required ACPI tables are not loaded 2487(FADT, FACS, DSDT). BZ 477 2488 2489Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2490header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2491manually optimized to be aligned and will not work if it is byte-packed. 2492 2493Example Code and Data Size: These are the sizes for the OS-independent 2494acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2495debug version of the code includes the debug output trace mechanism and has 2496a much larger code and data size. 2497 2498 Previous Release: 2499 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2500 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2501 Current Release: 2502 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2503 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2504 2505 25062) iASL Compiler/Disassembler and Tools: 2507 2508Fixed a problem where the presence of the _OSI predefined control method 2509within complex expressions could cause an internal compiler error. 2510 2511AcpiExec: Implemented full region support for multiple address spaces. 2512SpaceId is now part of the REGION object. BZ 429 2513 2514---------------------------------------- 251511 October 2006. Summary of changes for version 20061011: 2516 25171) ACPI CA Core Subsystem: 2518 2519Completed an AML interpreter performance enhancement for control method 2520execution. Previously a 2-pass parse/execution, control methods are now 2521completely parsed and executed in a single pass. This improves overall 2522interpreter performance by ~25%, reduces code size, and reduces CPU stack 2523use. (Valery Podrezov + interpreter changes in version 20051202 that 2524eliminated namespace loading during the pass one parse.) 2525 2526Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2527match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2528obtained and also checked for an ID match. 2529 2530Implemented additional support for the PCI _ADR execution: upsearch until a 2531device scope is found before executing _ADR. This allows PCI_Config 2532operation regions to be declared locally within control methods underneath 2533PCI device objects. 2534 2535Fixed a problem with a possible race condition between threads executing 2536AcpiWalkNamespace and the AML interpreter. This condition was removed by 2537modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2538entries created during any concurrent control method execution. An 2539additional namespace race condition is known to exist between 2540AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2541investigation. 2542 2543Restructured the AML ParseLoop function, breaking it into several 2544subfunctions in order to reduce CPU stack use and improve maintainability. 2545(Mikhail Kouzmich) 2546 2547AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2548of prefix handle and pathname. BZ 478 2549 2550Example Code and Data Size: These are the sizes for the OS-independent 2551acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2552debug version of the code includes the debug output trace mechanism and has 2553a much larger code and data size. 2554 2555 Previous Release: 2556 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2557 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2558 Current Release: 2559 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2560 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2561 25622) iASL Compiler/Disassembler and Tools: 2563 2564Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2565to restore original behavior. 2566 2567---------------------------------------- 256827 September 2006. Summary of changes for version 20060927: 2569 25701) ACPI CA Core Subsystem: 2571 2572Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2573These functions now use a spinlock for mutual exclusion and the interrupt 2574level indication flag is not needed. 2575 2576Fixed a problem with the Global Lock where the lock could appear to be 2577obtained before it is actually obtained. The global lock semaphore was 2578inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2579Suietov. 2580 2581Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2582a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2583 2584Example Code and Data Size: These are the sizes for the OS-independent 2585acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2586debug version of the code includes the debug output trace mechanism and has 2587a much larger code and data size. 2588 2589 Previous Release: 2590 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2591 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2592 Current Release: 2593 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2594 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2595 2596 25972) iASL Compiler/Disassembler and Tools: 2598 2599Fixed a compilation problem with the pre-defined Resource Descriptor field 2600names where an "object does not exist" error could be incorrectly generated 2601if the parent ResourceTemplate pathname places the template within a 2602different namespace scope than the current scope. (BZ 7212) 2603 2604Fixed a problem where the compiler could hang after syntax errors detected 2605in an ElseIf construct. (BZ 453) 2606 2607Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2608operator. An incorrect output filename was produced when this parameter was 2609a null string (""). Now, the original input filename is used as the AML 2610output filename, with an ".aml" extension. 2611 2612Implemented a generic batch command mode for the AcpiExec utility (execute 2613any AML debugger command) (Valery Podrezov). 2614 2615---------------------------------------- 261612 September 2006. Summary of changes for version 20060912: 2617 26181) ACPI CA Core Subsystem: 2619 2620Enhanced the implementation of the "serialized mode" of the interpreter 2621(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2622specified, instead of creating a serialization semaphore per control method, 2623the interpreter lock is simply no longer released before a blocking 2624operation during control method execution. This effectively makes the AML 2625Interpreter single-threaded. The overhead of a semaphore per-method is 2626eliminated. 2627 2628Fixed a regression where an error was no longer emitted if a control method 2629attempts to create 2 objects of the same name. This once again returns 2630AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2631will dynamically serialize the control method to possible prevent future 2632errors. (BZ 440) 2633 2634Integrated a fix for a problem with PCI Express HID detection in the PCI 2635Config Space setup procedure. (BZ 7145) 2636 2637Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2638AcpiHwInitialize function - the FADT registers are now validated when the 2639table is loaded. 2640 2641Added two new warnings during FADT verification - 1) if the FADT is larger 2642than the largest known FADT version, and 2) if there is a mismatch between a 264332-bit block address and the 64-bit X counterpart (when both are non-zero.) 2644 2645Example Code and Data Size: These are the sizes for the OS-independent 2646acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2647debug version of the code includes the debug output trace mechanism and has 2648a much larger code and data size. 2649 2650 Previous Release: 2651 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2652 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2653 Current Release: 2654 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2655 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2656 2657 26582) iASL Compiler/Disassembler and Tools: 2659 2660Fixed a problem with the implementation of the Switch() operator where the 2661temporary variable was declared too close to the actual Switch, instead of 2662at method level. This could cause a problem if the Switch() operator is 2663within a while loop, causing an error on the second iteration. (BZ 460) 2664 2665Disassembler - fix for error emitted for unknown type for target of scope 2666operator. Now, ignore it and continue. 2667 2668Disassembly of an FADT now verifies the input FADT and reports any errors 2669found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2670 2671Disassembly of raw data buffers with byte initialization data now prefixes 2672each output line with the current buffer offset. 2673 2674Disassembly of ASF! table now includes all variable-length data fields at 2675the end of some of the subtables. 2676 2677The disassembler now emits a comment if a buffer appears to be a 2678ResourceTemplate, but cannot be disassembled as such because the EndTag does 2679not appear at the very end of the buffer. 2680 2681AcpiExec - Added the "-t" command line option to enable the serialized mode 2682of the AML interpreter. 2683 2684---------------------------------------- 268531 August 2006. Summary of changes for version 20060831: 2686 26871) ACPI CA Core Subsystem: 2688 2689Miscellaneous fixes for the Table Manager: 2690- Correctly initialize internal common FADT for all 64-bit "X" fields 2691- Fixed a couple table mapping issues during table load 2692- Fixed a couple alignment issues for IA64 2693- Initialize input array to zero in AcpiInitializeTables 2694- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2695AcpiGetTableByIndex 2696 2697Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2698immediately disabled to prevent the waking GPE from firing again and to 2699prevent other wake GPEs from interrupting the wake process. 2700 2701Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2702be used for debugging systems with a large number of ACPI interrupts. 2703 2704Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2705both the ACPICA headers and the disassembler. 2706 2707Example Code and Data Size: These are the sizes for the OS-independent 2708acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2709debug version of the code includes the debug output trace mechanism and has 2710a much larger code and data size. 2711 2712 Previous Release: 2713 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2714 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2715 Current Release: 2716 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2717 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2718 2719 27202) iASL Compiler/Disassembler and Tools: 2721 2722Disassembler support for the DMAR ACPI table. 2723 2724---------------------------------------- 272523 August 2006. Summary of changes for version 20060823: 2726 27271) ACPI CA Core Subsystem: 2728 2729The Table Manager component has been completely redesigned and 2730reimplemented. The new design is much simpler, and reduces the overall code 2731and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2732now possible to obtain the ACPI tables very early during kernel 2733initialization, even before dynamic memory management is initialized. 2734(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2735 2736Obsolete ACPICA interfaces: 2737 2738- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2739time). 2740- AcpiLoadTable: Not needed. 2741- AcpiUnloadTable: Not needed. 2742 2743New ACPICA interfaces: 2744 2745- AcpiInitializeTables: Must be called before the table manager can be used. 2746- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2747allocated memory after it becomes available. 2748- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2749in the RSDT/XSDT. 2750 2751Other ACPICA changes: 2752 2753- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2754AcpiOsUnmapMemory to free this mapping. 2755- AcpiGetTable returns the actual mapped table. The mapping is managed 2756internally and must not be deleted by the caller. Use of this interface 2757causes no additional dynamic memory allocation. 2758- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2759it appeared to be unused. 2760- The interface to AcpiOsMapMemory has changed to be consistent with the 2761other allocation interfaces. 2762- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2763parameters. 2764- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2765bit platforms. Was previously 64 bits on all platforms. 2766- The interface to the ACPI Global Lock acquire/release macros have changed 2767slightly since ACPICA no longer keeps a local copy of the FACS with a 2768constructed pointer to the actual global lock. 2769 2770Porting to the new table manager: 2771 2772- AcpiInitializeTables: Must be called once, and can be called anytime 2773during the OS initialization process. It allows the host to specify an area 2774of memory to be used to store the internal version of the RSDT/XSDT (root 2775table). This allows the host to access ACPI tables before memory management 2776is initialized and running. 2777- AcpiReallocateRootTable: Can be called after memory management is running 2778to copy the root table to a dynamically allocated array, freeing up the 2779scratch memory specified in the call to AcpiInitializeTables. 2780- AcpiSubsystemInitialize: This existing interface is independent of the 2781Table Manager, and does not have to be called before the Table Manager can 2782be used, it only must be called before the rest of ACPICA can be used. 2783- ACPI Tables: Some changes have been made to the names and structure of the 2784actbl.h and actbl1.h header files and may require changes to existing code. 2785For example, bitfields have been completely removed because of their lack of 2786portability across C compilers. 2787- Update interfaces to the Global Lock acquire/release macros if local 2788versions are used. (see acwin.h) 2789 2790Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2791 2792New files: tbfind.c 2793 2794Example Code and Data Size: These are the sizes for the OS-independent 2795acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2796debug version of the code includes the debug output trace mechanism and has 2797a much larger code and data size. 2798 2799 Previous Release: 2800 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2801 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2802 Current Release: 2803 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2804 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2805 2806 28072) iASL Compiler/Disassembler and Tools: 2808 2809No changes for this release. 2810 2811---------------------------------------- 281221 July 2006. Summary of changes for version 20060721: 2813 28141) ACPI CA Core Subsystem: 2815 2816The full source code for the ASL test suite used to validate the iASL 2817compiler and the ACPICA core subsystem is being released with the ACPICA 2818source for the first time. The source is contained in a separate package and 2819consists of over 1100 files that exercise all ASL/AML operators. The package 2820should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2821Suietov) 2822 2823Completed a new design and implementation for support of the ACPI Global 2824Lock. On the OS side, the global lock is now treated as a standard AML 2825mutex. Previously, multiple OS threads could "acquire" the global lock 2826simultaneously. However, this could cause the BIOS to be starved out of the 2827lock - especially in cases such as the Embedded Controller driver where 2828there is a tight coupling between the OS and the BIOS. 2829 2830Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2831The Global Lock interrupt handler no longer queues the execution of a 2832separate thread to signal the global lock semaphore. Instead, the semaphore 2833is signaled directly from the interrupt handler. 2834 2835Implemented support within the AML interpreter for package objects that 2836contain a larger AML length (package list length) than the package element 2837count. In this case, the length of the package is truncated to match the 2838package element count. Some BIOS code apparently modifies the package length 2839on the fly, and this change supports this behavior. Provides compatibility 2840with the MS AML interpreter. (With assistance from Fiodor Suietov) 2841 2842Implemented a temporary fix for the BankValue parameter of a Bank Field to 2843support all constant values, now including the Zero and One opcodes. 2844Evaluation of this parameter must eventually be converted to a full TermArg 2845evaluation. A not-implemented error is now returned (temporarily) for non- 2846constant values for this parameter. 2847 2848Fixed problem reports (Fiodor Suietov) integrated: 2849- Fix for premature object deletion after CopyObject on Operation Region (BZ 2850350) 2851 2852Example Code and Data Size: These are the sizes for the OS-independent 2853acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2854debug version of the code includes the debug output trace mechanism and has 2855a much larger code and data size. 2856 2857 Previous Release: 2858 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2859 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2860 Current Release: 2861 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2862 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2863 2864 28652) iASL Compiler/Disassembler and Tools: 2866 2867No changes for this release. 2868 2869---------------------------------------- 287007 July 2006. Summary of changes for version 20060707: 2871 28721) ACPI CA Core Subsystem: 2873 2874Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2875that do not allow the initialization of address pointers within packed 2876structures - even though the hardware itself may support misaligned 2877transfers. Some of the debug data structures are packed by default to 2878minimize size. 2879 2880Added an error message for the case where AcpiOsGetThreadId() returns zero. 2881A non-zero value is required by the core ACPICA code to ensure the proper 2882operation of AML mutexes and recursive control methods. 2883 2884The DSDT is now the only ACPI table that determines whether the AML 2885interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2886the hooks for per-table 32/64 switching have been removed from the code. A 2887clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2888 2889Fixed a possible leak of an OwnerID in the error path of 2890AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2891deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2892when using the AcpiTbDeleteTablesByType interface (with assistance from 2893Lance Ortiz.) 2894 2895Fixed a problem with Serialized control methods where the semaphore 2896associated with the method could be over-signaled after multiple method 2897invocations. 2898 2899Fixed two issues with the locking of the internal namespace data structure. 2900Both the Unload() operator and AcpiUnloadTable interface now lock the 2901namespace during the namespace deletion associated with the table unload 2902(with assistance from Linn Crosetto.) 2903 2904Fixed problem reports (Valery Podrezov) integrated: 2905- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2906 2907Fixed problem reports (Fiodor Suietov) integrated: 2908- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2909- On Address Space handler deletion, needless deactivation call (BZ 374) 2910- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2911- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2912(BZ 376) 2913- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2914- Minimum Length of RSDT should be validated (BZ 379) 2915- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2916Handler (BZ (380) 2917- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2918(BZ 381) 2919 2920Example Code and Data Size: These are the sizes for the OS-independent 2921acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2922debug version of the code includes the debug output trace mechanism and has 2923a much larger code and data size. 2924 2925 Previous Release: 2926 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2927 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2928 Current Release: 2929 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2930 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2931 2932 29332) iASL Compiler/Disassembler and Tools: 2934 2935Fixed problem reports: 2936Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2937436) 2938 2939---------------------------------------- 294023 June 2006. Summary of changes for version 20060623: 2941 29421) ACPI CA Core Subsystem: 2943 2944Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2945allows the type to be customized to the host OS for improved efficiency 2946(since a spinlock is usually a very small object.) 2947 2948Implemented support for "ignored" bits in the ACPI registers. According to 2949the ACPI specification, these bits should be preserved when writing the 2950registers via a read/modify/write cycle. There are 3 bits preserved in this 2951manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2952 2953Implemented the initial deployment of new OSL mutex interfaces. Since some 2954host operating systems have separate mutex and semaphore objects, this 2955feature was requested. The base code now uses mutexes (and the new mutex 2956interfaces) wherever a binary semaphore was used previously. However, for 2957the current release, the mutex interfaces are defined as macros to map them 2958to the existing semaphore interfaces. Therefore, no OSL changes are required 2959at this time. (See acpiosxf.h) 2960 2961Fixed several problems with the support for the control method SyncLevel 2962parameter. The SyncLevel now works according to the ACPI specification and 2963in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2964is a property of the executing thread. Mutual exclusion for control methods 2965is now implemented with a mutex instead of a semaphore. 2966 2967Fixed three instances of the use of the C shift operator in the bitfield 2968support code (exfldio.c) to avoid the use of a shift value larger than the 2969target data width. The behavior of C compilers is undefined in this case and 2970can cause unpredictable results, and therefore the case must be detected and 2971avoided. (Fiodor Suietov) 2972 2973Added an info message whenever an SSDT or OEM table is loaded dynamically 2974via the Load() or LoadTable() ASL operators. This should improve debugging 2975capability since it will show exactly what tables have been loaded (beyond 2976the tables present in the RSDT/XSDT.) 2977 2978Example Code and Data Size: These are the sizes for the OS-independent 2979acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2980debug version of the code includes the debug output trace mechanism and has 2981a much larger code and data size. 2982 2983 Previous Release: 2984 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2985 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2986 Current Release: 2987 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2988 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2989 2990 29912) iASL Compiler/Disassembler and Tools: 2992 2993No changes for this release. 2994 2995---------------------------------------- 299608 June 2006. Summary of changes for version 20060608: 2997 29981) ACPI CA Core Subsystem: 2999 3000Converted the locking mutex used for the ACPI hardware to a spinlock. This 3001change should eliminate all problems caused by attempting to acquire a 3002semaphore at interrupt level, and it means that all ACPICA external 3003interfaces that directly access the ACPI hardware can be safely called from 3004interrupt level. OSL code that implements the semaphore interfaces should be 3005able to eliminate any workarounds for being called at interrupt level. 3006 3007Fixed a regression introduced in 20060526 where the ACPI device 3008initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3009did not have an optional _INI method. 3010 3011Fixed an IndexField issue where a write to the Data Register should be 3012limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3013Fiodor Suietov) 3014 3015Fixed problem reports (Valery Podrezov) integrated: 3016- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3017 3018Fixed problem reports (Fiodor Suietov) integrated: 3019- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3020 3021Removed four global mutexes that were obsolete and were no longer being 3022used. 3023 3024Example Code and Data Size: These are the sizes for the OS-independent 3025acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3026debug version of the code includes the debug output trace mechanism and has 3027a much larger code and data size. 3028 3029 Previous Release: 3030 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3031 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3032 Current Release: 3033 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3034 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3035 3036 30372) iASL Compiler/Disassembler and Tools: 3038 3039Fixed a fault when using -g option (get tables from registry) on Windows 3040machines. 3041 3042Fixed problem reports integrated: 3043- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3044- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3045Suietov) 3046- Global table revision override (-r) is ignored (BZ 413) 3047 3048---------------------------------------- 304926 May 2006. Summary of changes for version 20060526: 3050 30511) ACPI CA Core Subsystem: 3052 3053Restructured, flattened, and simplified the internal interfaces for 3054namespace object evaluation - resulting in smaller code, less CPU stack use, 3055and fewer interfaces. (With assistance from Mikhail Kouzmich) 3056 3057Fixed a problem with the CopyObject operator where the first parameter was 3058not typed correctly for the parser, interpreter, compiler, and disassembler. 3059Caused various errors and unexpected behavior. 3060 3061Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3062produced incorrect results with some C compilers. Since the behavior of C 3063compilers when the shift value is larger than the datatype width is 3064apparently not well defined, the interpreter now detects this condition and 3065simply returns zero as expected in all such cases. (BZ 395) 3066 3067Fixed problem reports (Valery Podrezov) integrated: 3068- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3069- Allow interpreter to handle nested method declarations (BZ 5361) 3070 3071Fixed problem reports (Fiodor Suietov) integrated: 3072- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3073- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3074- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3075- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3076- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3077- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3078- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3079- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3080- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3081- Status of the Global Initialization Handler call not used (BZ 366) 3082- Incorrect object parameter to Global Initialization Handler (BZ 367) 3083 3084Example Code and Data Size: These are the sizes for the OS-independent 3085acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3086debug version of the code includes the debug output trace mechanism and has 3087a much larger code and data size. 3088 3089 Previous Release: 3090 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3091 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3092 Current Release: 3093 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3094 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3095 3096 30972) iASL Compiler/Disassembler and Tools: 3098 3099Modified the parser to allow the names IO, DMA, and IRQ to be used as 3100namespace identifiers with no collision with existing resource descriptor 3101macro names. This provides compatibility with other ASL compilers and is 3102most useful for disassembly/recompilation of existing tables without parse 3103errors. (With assistance from Thomas Renninger) 3104 3105Disassembler: fixed an incorrect disassembly problem with the 3106DataTableRegion and CopyObject operators. Fixed a possible fault during 3107disassembly of some Alias operators. 3108 3109---------------------------------------- 311012 May 2006. Summary of changes for version 20060512: 3111 31121) ACPI CA Core Subsystem: 3113 3114Replaced the AcpiOsQueueForExecution interface with a new interface named 3115AcpiOsExecute. The major difference is that the new interface does not have 3116a Priority parameter, this appeared to be useless and has been replaced by a 3117Type parameter. The Type tells the host what type of execution is being 3118requested, such as global lock handler, notify handler, GPE handler, etc. 3119This allows the host to queue and execute the request as appropriate for the 3120request type, possibly using different work queues and different priorities 3121for the various request types. This enables fixes for multithreading 3122deadlock problems such as BZ #5534, and will require changes to all existing 3123OS interface layers. (Alexey Starikovskiy and Bob Moore) 3124 3125Fixed a possible memory leak associated with the support for the so-called 3126"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3127Suietov) 3128 3129Fixed a problem with the Load() operator where a table load from an 3130operation region could overwrite an internal table buffer by up to 7 bytes 3131and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3132 3133Example Code and Data Size: These are the sizes for the OS-independent 3134acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3135debug version of the code includes the debug output trace mechanism and has 3136a much larger code and data size. 3137 3138 Previous Release: 3139 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3140 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3141 Current Release: 3142 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3143 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3144 3145 3146 31472) iASL Compiler/Disassembler and Tools: 3148 3149Disassembler: Implemented support to cross reference the internal namespace 3150and automatically generate ASL External() statements for symbols not defined 3151within the current table being disassembled. This will simplify the 3152disassembly and recompilation of interdependent tables such as SSDTs since 3153these statements will no longer have to be added manually. 3154 3155Disassembler: Implemented experimental support to automatically detect 3156invocations of external control methods and generate appropriate External() 3157statements. This is problematic because the AML cannot be correctly parsed 3158until the number of arguments for each control method is known. Currently, 3159standalone method invocations and invocations as the source operand of a 3160Store() statement are supported. 3161 3162Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3163LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3164LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3165more readable and likely closer to the original ASL source. 3166 3167---------------------------------------- 316821 April 2006. Summary of changes for version 20060421: 3169 31701) ACPI CA Core Subsystem: 3171 3172Removed a device initialization optimization introduced in 20051216 where 3173the _STA method was not run unless an _INI was also present for the same 3174device. This optimization could cause problems because it could allow _INI 3175methods to be run within a not-present device subtree. (If a not-present 3176device had no _INI, _STA would not be run, the not-present status would not 3177be discovered, and the children of the device would be incorrectly 3178traversed.) 3179 3180Implemented a new _STA optimization where namespace subtrees that do not 3181contain _INI are identified and ignored during device initialization. 3182Selectively running _STA can significantly improve boot time on large 3183machines (with assistance from Len Brown.) 3184 3185Implemented support for the device initialization case where the returned 3186_STA flags indicate a device not-present but functioning. In this case, _INI 3187is not run, but the device children are examined for presence, as per the 3188ACPI specification. 3189 3190Implemented an additional change to the IndexField support in order to 3191conform to MS behavior. The value written to the Index Register is not 3192simply a byte offset, it is a byte offset in units of the access width of 3193the parent Index Field. (Fiodor Suietov) 3194 3195Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3196interface is called during the creation of all AML operation regions, and 3197allows the host OS to exert control over what addresses it will allow the 3198AML code to access. Operation Regions whose addresses are disallowed will 3199cause a runtime exception when they are actually accessed (will not affect 3200or abort table loading.) See oswinxf or osunixxf for an example 3201implementation. 3202 3203Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3204interface allows the host OS to match the various "optional" 3205interface/behavior strings for the _OSI predefined control method as 3206appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3207for an example implementation. 3208 3209Restructured and corrected various problems in the exception handling code 3210paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3211(with assistance from Takayoshi Kochi.) 3212 3213Modified the Linux source converter to ignore quoted string literals while 3214converting identifiers from mixed to lower case. This will correct problems 3215with the disassembler and other areas where such strings must not be 3216modified. 3217 3218The ACPI_FUNCTION_* macros no longer require quotes around the function 3219name. This allows the Linux source converter to convert the names, now that 3220the converter ignores quoted strings. 3221 3222Example Code and Data Size: These are the sizes for the OS-independent 3223acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3224debug version of the code includes the debug output trace mechanism and has 3225a much larger code and data size. 3226 3227 Previous Release: 3228 3229 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3230 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3231 Current Release: 3232 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3233 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3234 3235 32362) iASL Compiler/Disassembler and Tools: 3237 3238Implemented 3 new warnings for iASL, and implemented multiple warning levels 3239(w2 flag). 3240 32411) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3242WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3243check for the possible timeout, a warning is issued. 3244 32452) Useless operators: If an ASL operator does not specify an optional target 3246operand and it also does not use the function return value from the 3247operator, a warning is issued since the operator effectively does nothing. 3248 32493) Unreferenced objects: If a namespace object is created, but never 3250referenced, a warning is issued. This is a warning level 2 since there are 3251cases where this is ok, such as when a secondary table is loaded that uses 3252the unreferenced objects. Even so, care is taken to only flag objects that 3253don't look like they will ever be used. For example, the reserved methods 3254(starting with an underscore) are usually not referenced because it is 3255expected that the OS will invoke them. 3256 3257---------------------------------------- 325831 March 2006. Summary of changes for version 20060331: 3259 32601) ACPI CA Core Subsystem: 3261 3262Implemented header file support for the following additional ACPI tables: 3263ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3264all current and known ACPI tables are now defined in the ACPICA headers and 3265are available for use by device drivers and other software. 3266 3267Implemented support to allow tables that contain ACPI names with invalid 3268characters to be loaded. Previously, this would cause the table load to 3269fail, but since there are several known cases of such tables on existing 3270machines, this change was made to enable ACPI support for them. Also, this 3271matches the behavior of the Microsoft ACPI implementation. 3272 3273Fixed a couple regressions introduced during the memory optimization in the 327420060317 release. The namespace node definition required additional 3275reorganization and an internal datatype that had been changed to 8-bit was 3276restored to 32-bit. (Valery Podrezov) 3277 3278Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3279could be passed through to AcpiOsReleaseObject which is unexpected. Such 3280null pointers are now trapped and ignored, matching the behavior of the 3281previous implementation before the deployment of AcpiOsReleaseObject. 3282(Valery Podrezov, Fiodor Suietov) 3283 3284Fixed a memory mapping leak during the deletion of a SystemMemory operation 3285region where a cached memory mapping was not deleted. This became a 3286noticeable problem for operation regions that are defined within frequently 3287used control methods. (Dana Meyers) 3288 3289Reorganized the ACPI table header files into two main files: one for the 3290ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3291ACPI tables that are consumed by the drivers and other software. The various 3292FADT definitions were merged into one common section and three different 3293tables (ACPI 1.0, 1.0+, and 2.0) 3294 3295Example Code and Data Size: These are the sizes for the OS-independent 3296acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3297debug version of the code includes the debug output trace mechanism and has 3298a much larger code and data size. 3299 3300 Previous Release: 3301 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3302 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3303 Current Release: 3304 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3305 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3306 3307 33082) iASL Compiler/Disassembler and Tools: 3309 3310Disassembler: Implemented support to decode and format all non-AML ACPI 3311tables (tables other than DSDTs and SSDTs.) This includes the new tables 3312added to the ACPICA headers, therefore all current and known ACPI tables are 3313supported. 3314 3315Disassembler: The change to allow ACPI names with invalid characters also 3316enables the disassembly of such tables. Invalid characters within names are 3317changed to '*' to make the name printable; the iASL compiler will still 3318generate an error for such names, however, since this is an invalid ACPI 3319character. 3320 3321Implemented an option for AcpiXtract (-a) to extract all tables found in the 3322input file. The default invocation extracts only the DSDTs and SSDTs. 3323 3324Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3325makefile for the AcpiXtract utility. 3326 3327---------------------------------------- 332817 March 2006. Summary of changes for version 20060317: 3329 33301) ACPI CA Core Subsystem: 3331 3332Implemented the use of a cache object for all internal namespace nodes. 3333Since there are about 1000 static nodes in a typical system, this will 3334decrease memory use for cache implementations that minimize per-allocation 3335overhead (such as a slab allocator.) 3336 3337Removed the reference count mechanism for internal namespace nodes, since it 3338was deemed unnecessary. This reduces the size of each namespace node by 3339about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3340and 32 bytes for the 64-bit case. 3341 3342Optimized several internal data structures to reduce object size on 64-bit 3343platforms by packing data within the 64-bit alignment. This includes the 3344frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3345instances corresponding to the namespace objects. 3346 3347Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3348and "Windows 2006". 3349 3350Split the allocation tracking mechanism out to a separate file, from 3351utalloc.c to uttrack.c. This mechanism appears to be only useful for 3352application-level code. Kernels may wish to not include uttrack.c in 3353distributions. 3354 3355Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3356code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3357macros.) 3358 3359Code and Data Size: These are the sizes for the acpica.lib produced by the 3360Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3361driver or OSPM code. The debug version of the code includes the debug output 3362trace mechanism and has a much larger code and data size. Note that these 3363values will vary depending on the efficiency of the compiler and the 3364compiler options used during generation. 3365 3366 Previous Release: 3367 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3368 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3369 Current Release: 3370 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3371 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3372 3373 33742) iASL Compiler/Disassembler and Tools: 3375 3376Implemented an ANSI C version of the acpixtract utility. This version will 3377automatically extract the DSDT and all SSDTs from the input acpidump text 3378file and dump the binary output to separate files. It can also display a 3379summary of the input file including the headers for each table found and 3380will extract any single ACPI table, with any signature. (See 3381source/tools/acpixtract) 3382 3383---------------------------------------- 338410 March 2006. Summary of changes for version 20060310: 3385 33861) ACPI CA Core Subsystem: 3387 3388Tagged all external interfaces to the subsystem with the new 3389ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3390kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3391macro. The default definition is NULL. 3392 3393Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3394This allows the host to define this as necessary to simplify kernel 3395integration. The default definition is ACPI_NATIVE_UINT. 3396 3397Fixed two interpreter problems related to error processing, the deletion of 3398objects, and placing invalid pointers onto the internal operator result 3399stack. BZ 6028, 6151 (Valery Podrezov) 3400 3401Increased the reference count threshold where a warning is emitted for large 3402reference counts in order to eliminate unnecessary warnings on systems with 3403large namespaces (especially 64-bit.) Increased the value from 0x400 to 34040x800. 3405 3406Due to universal disagreement as to the meaning of the 'c' in the calloc() 3407function, the ACPI_MEM_CALLOCATE macro has been renamed to 3408ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3409ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3410ACPI_FREE. 3411 3412Code and Data Size: These are the sizes for the acpica.lib produced by the 3413Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3414driver or OSPM code. The debug version of the code includes the debug output 3415trace mechanism and has a much larger code and data size. Note that these 3416values will vary depending on the efficiency of the compiler and the 3417compiler options used during generation. 3418 3419 Previous Release: 3420 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3421 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3422 Current Release: 3423 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3424 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3425 3426 34272) iASL Compiler/Disassembler: 3428 3429Disassembler: implemented support for symbolic resource descriptor 3430references. If a CreateXxxxField operator references a fixed offset within a 3431resource descriptor, a name is assigned to the descriptor and the offset is 3432translated to the appropriate resource tag and pathname. The addition of 3433this support brings the disassembled code very close to the original ASL 3434source code and helps eliminate run-time errors when the disassembled code 3435is modified (and recompiled) in such a way as to invalidate the original 3436fixed offsets. 3437 3438Implemented support for a Descriptor Name as the last parameter to the ASL 3439Register() macro. This parameter was inadvertently left out of the ACPI 3440specification, and will be added for ACPI 3.0b. 3441 3442Fixed a problem where the use of the "_OSI" string (versus the full path 3443"\_OSI") caused an internal compiler error. ("No back ptr to op") 3444 3445Fixed a problem with the error message that occurs when an invalid string is 3446used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3447The correct message is now displayed. 3448 3449---------------------------------------- 345017 February 2006. Summary of changes for version 20060217: 3451 34521) ACPI CA Core Subsystem: 3453 3454Implemented a change to the IndexField support to match the behavior of the 3455Microsoft AML interpreter. The value written to the Index register is now a 3456byte offset, no longer an index based upon the width of the Data register. 3457This should fix IndexField problems seen on some machines where the Data 3458register is not exactly one byte wide. The ACPI specification will be 3459clarified on this point. 3460 3461Fixed a problem where several resource descriptor types could overrun the 3462internal descriptor buffer due to size miscalculation: VendorShort, 3463VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3464affect all platforms. 3465 3466Fixed a problem where individual resource descriptors were misaligned within 3467the internal buffer, causing alignment faults on IA64 platforms. 3468 3469Code and Data Size: These are the sizes for the acpica.lib produced by the 3470Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3471driver or OSPM code. The debug version of the code includes the debug output 3472trace mechanism and has a much larger code and data size. Note that these 3473values will vary depending on the efficiency of the compiler and the 3474compiler options used during generation. 3475 3476 Previous Release: 3477 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3478 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3479 Current Release: 3480 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3481 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3482 3483 34842) iASL Compiler/Disassembler: 3485 3486Implemented support for new reserved names: _WDG and _WED are Microsoft 3487extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3488defined method (Throttling Depth Limit.) 3489 3490Fixed a problem where a zero-length VendorShort or VendorLong resource 3491descriptor was incorrectly emitted as a descriptor of length one. 3492 3493---------------------------------------- 349410 February 2006. Summary of changes for version 20060210: 3495 34961) ACPI CA Core Subsystem: 3497 3498Removed a couple of extraneous ACPI_ERROR messages that appeared during 3499normal execution. These became apparent after the conversion from 3500ACPI_DEBUG_PRINT. 3501 3502Fixed a problem where the CreateField operator could hang if the BitIndex or 3503NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3504 3505Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3506failed with an exception. This also fixes a couple of related RefOf and 3507DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3508 3509Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3510AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 35115480) 3512 3513Implemented a memory cleanup at the end of the execution of each iteration 3514of an AML While() loop, preventing the accumulation of outstanding objects. 3515(Valery Podrezov, BZ 5427) 3516 3517Eliminated a chunk of duplicate code in the object resolution code. (Valery 3518Podrezov, BZ 5336) 3519 3520Fixed several warnings during the 64-bit code generation. 3521 3522The AcpiSrc source code conversion tool now inserts one line of whitespace 3523after an if() statement that is followed immediately by a comment, improving 3524readability of the Linux code. 3525 3526Code and Data Size: The current and previous library sizes for the core 3527subsystem are shown below. These are the code and data sizes for the 3528acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3529values do not include any ACPI driver or OSPM code. The debug version of the 3530code includes the debug output trace mechanism and has a much larger code 3531and data size. Note that these values will vary depending on the efficiency 3532of the compiler and the compiler options used during generation. 3533 3534 Previous Release: 3535 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3536 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3537 Current Release: 3538 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3539 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3540 3541 35422) iASL Compiler/Disassembler: 3543 3544Fixed a problem with the disassembly of a BankField operator with a complex 3545expression for the BankValue parameter. 3546 3547---------------------------------------- 354827 January 2006. Summary of changes for version 20060127: 3549 35501) ACPI CA Core Subsystem: 3551 3552Implemented support in the Resource Manager to allow unresolved namestring 3553references within resource package objects for the _PRT method. This support 3554is in addition to the previously implemented unresolved reference support 3555within the AML parser. If the interpreter slack mode is enabled, these 3556unresolved references will be passed through to the caller as a NULL package 3557entry. 3558 3559Implemented and deployed new macros and functions for error and warning 3560messages across the subsystem. These macros are simpler and generate less 3561code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3562ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3563macros remain defined to allow ACPI drivers time to migrate to the new 3564macros. 3565 3566Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3567Acquire/Release Lock OSL interfaces. 3568 3569Fixed a problem where Alias ASL operators are sometimes not correctly 3570resolved, in both the interpreter and the iASL compiler. 3571 3572Fixed several problems with the implementation of the ConcatenateResTemplate 3573ASL operator. As per the ACPI specification, zero length buffers are now 3574treated as a single EndTag. One-length buffers always cause a fatal 3575exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3576cause a fatal exception. 3577 3578Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3579interface. (With assistance from Thomas Renninger) 3580 3581Code and Data Size: The current and previous library sizes for the core 3582subsystem are shown below. These are the code and data sizes for the 3583acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3584values do not include any ACPI driver or OSPM code. The debug version of the 3585code includes the debug output trace mechanism and has a much larger code 3586and data size. Note that these values will vary depending on the efficiency 3587of the compiler and the compiler options used during generation. 3588 3589 Previous Release: 3590 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3591 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3592 Current Release: 3593 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3594 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3595 3596 35972) iASL Compiler/Disassembler: 3598 3599Fixed an internal error that was generated for any forward references to ASL 3600Alias objects. 3601 3602---------------------------------------- 360313 January 2006. Summary of changes for version 20060113: 3604 36051) ACPI CA Core Subsystem: 3606 3607Added 2006 copyright to all module headers and signons. This affects 3608virtually every file in the ACPICA core subsystem, iASL compiler, and the 3609utilities. 3610 3611Enhanced the ACPICA error reporting in order to simplify user migration to 3612the non-debug version of ACPICA. Replaced all instances of the 3613ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3614levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3615respectively. This preserves all error and warning messages in the non-debug 3616version of the ACPICA code (this has been referred to as the "debug lite" 3617option.) Over 200 cases were converted to create a total of over 380 3618error/warning messages across the ACPICA code. This increases the code and 3619data size of the default non-debug version of the code somewhat (about 13K), 3620but all error/warning reporting may be disabled if desired (and code 3621eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3622configuration option. The size of the debug version of ACPICA remains about 3623the same. 3624 3625Fixed a memory leak within the AML Debugger "Set" command. One object was 3626not properly deleted for every successful invocation of the command. 3627 3628Code and Data Size: The current and previous library sizes for the core 3629subsystem are shown below. These are the code and data sizes for the 3630acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3631values do not include any ACPI driver or OSPM code. The debug version of the 3632code includes the debug output trace mechanism and has a much larger code 3633and data size. Note that these values will vary depending on the efficiency 3634of the compiler and the compiler options used during generation. 3635 3636 Previous Release: 3637 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3638 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3639 Current Release: 3640 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3641 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3642 3643 36442) iASL Compiler/Disassembler: 3645 3646The compiler now officially supports the ACPI 3.0a specification that was 3647released on December 30, 2005. (Specification is available at www.acpi.info) 3648 3649---------------------------------------- 365016 December 2005. Summary of changes for version 20051216: 3651 36521) ACPI CA Core Subsystem: 3653 3654Implemented optional support to allow unresolved names within ASL Package 3655objects. A null object is inserted in the package when a named reference 3656cannot be located in the current namespace. Enabled via the interpreter 3657slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3658that contain such code. 3659 3660Implemented an optimization to the initialization sequence that can improve 3661boot time. During ACPI device initialization, the _STA method is now run if 3662and only if the _INI method exists. The _STA method is used to determine if 3663the device is present; An _INI can only be run if _STA returns present, but 3664it is a waste of time to run the _STA method if the _INI does not exist. 3665(Prototype and assistance from Dong Wei) 3666 3667Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3668available in the current compiler. Otherwise, the default (void *) cast is 3669used as before. 3670 3671Fixed some possible memory leaks found within the execution path of the 3672Break, Continue, If, and CreateField operators. (Valery Podrezov) 3673 3674Fixed a problem introduced in the 20051202 release where an exception is 3675generated during method execution if a control method attempts to declare 3676another method. 3677 3678Moved resource descriptor string constants that are used by both the AML 3679disassembler and AML debugger to the common utilities directory so that 3680these components are independent. 3681 3682Implemented support in the AcpiExec utility (-e switch) to globally ignore 3683exceptions during control method execution (method is not aborted.) 3684 3685Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3686generation. 3687 3688Code and Data Size: The current and previous library sizes for the core 3689subsystem are shown below. These are the code and data sizes for the 3690acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3691values do not include any ACPI driver or OSPM code. The debug version of the 3692code includes the debug output trace mechanism and has a much larger code 3693and data size. Note that these values will vary depending on the efficiency 3694of the compiler and the compiler options used during generation. 3695 3696 Previous Release: 3697 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3698 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3699 Current Release: 3700 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3701 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3702 3703 37042) iASL Compiler/Disassembler: 3705 3706Fixed a problem where a CPU stack overflow fault could occur if a recursive 3707method call was made from within a Return statement. 3708 3709---------------------------------------- 371002 December 2005. Summary of changes for version 20051202: 3711 37121) ACPI CA Core Subsystem: 3713 3714Modified the parsing of control methods to no longer create namespace 3715objects during the first pass of the parse. Objects are now created only 3716during the execute phase, at the moment the namespace creation operator is 3717encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3718should eliminate ALREADY_EXISTS exceptions seen on some machines where 3719reentrant control methods are protected by an AML mutex. The mutex will now 3720correctly block multiple threads from attempting to create the same object 3721more than once. 3722 3723Increased the number of available Owner Ids for namespace object tracking 3724from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3725some machines with a large number of ACPI tables (either static or dynamic). 3726 3727Fixed a problem with the AcpiExec utility where a fault could occur when the 3728-b switch (batch mode) is used. 3729 3730Enhanced the namespace dump routine to output the owner ID for each 3731namespace object. 3732 3733Code and Data Size: The current and previous library sizes for the core 3734subsystem are shown below. These are the code and data sizes for the 3735acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3736values do not include any ACPI driver or OSPM code. The debug version of the 3737code includes the debug output trace mechanism and has a much larger code 3738and data size. Note that these values will vary depending on the efficiency 3739of the compiler and the compiler options used during generation. 3740 3741 Previous Release: 3742 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3743 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3744 Current Release: 3745 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3746 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3747 3748 37492) iASL Compiler/Disassembler: 3750 3751Fixed a parse error during compilation of certain Switch/Case constructs. To 3752simplify the parse, the grammar now allows for multiple Default statements 3753and this error is now detected and flagged during the analysis phase. 3754 3755Disassembler: The disassembly now includes the contents of the original 3756table header within a comment at the start of the file. This includes the 3757name and version of the original ASL compiler. 3758 3759---------------------------------------- 376017 November 2005. Summary of changes for version 20051117: 3761 37621) ACPI CA Core Subsystem: 3763 3764Fixed a problem in the AML parser where the method thread count could be 3765decremented below zero if any errors occurred during the method parse phase. 3766This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3767This also fixed a related regression with the mechanism that detects and 3768corrects methods that cannot properly handle reentrancy (related to the 3769deployment of the new OwnerId mechanism.) 3770 3771Eliminated the pre-parsing of control methods (to detect errors) during 3772table load. Related to the problem above, this was causing unwind issues if 3773any errors occurred during the parse, and it seemed to be overkill. A table 3774load should not be aborted if there are problems with any single control 3775method, thus rendering this feature rather pointless. 3776 3777Fixed a problem with the new table-driven resource manager where an internal 3778buffer overflow could occur for small resource templates. 3779 3780Implemented a new external interface, AcpiGetVendorResource. This interface 3781will find and return a vendor-defined resource descriptor within a _CRS or 3782_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3783 3784Removed the length limit (200) on string objects as per the upcoming ACPI 37853.0A specification. This affects the following areas of the interpreter: 1) 3786any implicit conversion of a Buffer to a String, 2) a String object result 3787of the ASL Concatentate operator, 3) the String object result of the ASL 3788ToString operator. 3789 3790Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3791on a semaphore object would incorrectly timeout. This allows the 3792multithreading features of the AcpiExec utility to work properly under 3793Windows. 3794 3795Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3796the recently added file named "utresrc.c". 3797 3798Code and Data Size: The current and previous library sizes for the core 3799subsystem are shown below. These are the code and data sizes for the 3800acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3801values do not include any ACPI driver or OSPM code. The debug version of the 3802code includes the debug output trace mechanism and has a much larger code 3803and data size. Note that these values will vary depending on the efficiency 3804of the compiler and the compiler options used during generation. 3805 3806 Previous Release: 3807 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3808 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3809 Current Release: 3810 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3811 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3812 3813 38142) iASL Compiler/Disassembler: 3815 3816Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3817specification. For the iASL compiler, this means that string literals within 3818the source ASL can be of any length. 3819 3820Enhanced the listing output to dump the AML code for resource descriptors 3821immediately after the ASL code for each descriptor, instead of in a block at 3822the end of the entire resource template. 3823 3824Enhanced the compiler debug output to dump the entire original parse tree 3825constructed during the parse phase, before any transforms are applied to the 3826tree. The transformed tree is dumped also. 3827 3828---------------------------------------- 382902 November 2005. Summary of changes for version 20051102: 3830 38311) ACPI CA Core Subsystem: 3832 3833Modified the subsystem initialization sequence to improve GPE support. The 3834GPE initialization has been split into two parts in order to defer execution 3835of the _PRW methods (Power Resources for Wake) until after the hardware is 3836fully initialized and the SCI handler is installed. This allows the _PRW 3837methods to access fields protected by the Global Lock. This will fix systems 3838where a NO_GLOBAL_LOCK exception has been seen during initialization. 3839 3840Converted the ACPI internal object disassemble and display code within the 3841AML debugger to fully table-driven operation, reducing code size and 3842increasing maintainability. 3843 3844Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3845in the 20051021 release. 3846 3847Implemented support for "local" internal ACPI object types within the 3848debugger "Object" command and the AcpiWalkNamespace external interfaces. 3849These local types include RegionFields, BankFields, IndexFields, Alias, and 3850reference objects. 3851 3852Moved common AML resource handling code into a new file, "utresrc.c". This 3853code is shared by both the Resource Manager and the AML Debugger. 3854 3855Code and Data Size: The current and previous library sizes for the core 3856subsystem are shown below. These are the code and data sizes for the 3857acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3858values do not include any ACPI driver or OSPM code. The debug version of the 3859code includes the debug output trace mechanism and has a much larger code 3860and data size. Note that these values will vary depending on the efficiency 3861of the compiler and the compiler options used during generation. 3862 3863 Previous Release: 3864 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3865 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3866 Current Release: 3867 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3868 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3869 3870 38712) iASL Compiler/Disassembler: 3872 3873Fixed a problem with very large initializer lists (more than 4000 elements) 3874for both Buffer and Package objects where the parse stack could overflow. 3875 3876Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3877characters within comment fields. The scan is now always performed and is no 3878longer optional, detecting invalid characters within a source file 3879immediately rather than during the parse phase or later. 3880 3881Enhanced the ASL grammar definition to force early reductions on all list- 3882style grammar elements so that the overall parse stack usage is greatly 3883reduced. This should improve performance and reduce the possibility of parse 3884stack overflow. 3885 3886Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3887with the addition of a %expected statement, the compiler generates from 3888source with no warnings. 3889 3890Fixed a possible segment fault in the disassembler if the input filename 3891does not contain a "dot" extension (Thomas Renninger). 3892 3893---------------------------------------- 389421 October 2005. Summary of changes for version 20051021: 3895 38961) ACPI CA Core Subsystem: 3897 3898Implemented support for the EM64T and other x86-64 processors. This 3899essentially entails recognizing that these processors support non-aligned 3900memory transfers. Previously, all 64-bit processors were assumed to lack 3901hardware support for non-aligned transfers. 3902 3903Completed conversion of the Resource Manager to nearly full table-driven 3904operation. Specifically, the resource conversion code (convert AML to 3905internal format and the reverse) and the debug code to dump internal 3906resource descriptors are fully table-driven, reducing code and data size and 3907improving maintainability. 3908 3909The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3910on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3911Alexey Starikovskiy) 3912 3913Implemented support within the resource conversion code for the Type- 3914Specific byte within the various ACPI 3.0 *WordSpace macros. 3915 3916Fixed some issues within the resource conversion code for the type-specific 3917flags for both Memory and I/O address resource descriptors. For Memory, 3918implemented support for the MTP and TTP flags. For I/O, split the TRS and 3919TTP flags into two separate fields. 3920 3921Code and Data Size: The current and previous library sizes for the core 3922subsystem are shown below. These are the code and data sizes for the 3923acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3924values do not include any ACPI driver or OSPM code. The debug version of the 3925code includes the debug output trace mechanism and has a much larger code 3926and data size. Note that these values will vary depending on the efficiency 3927of the compiler and the compiler options used during generation. 3928 3929 Previous Release: 3930 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3931 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3932 Current Release: 3933 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3934 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3935 3936 3937 39382) iASL Compiler/Disassembler: 3939 3940Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3941corresponding ResourceSource string was not also present in a resource 3942descriptor declaration. This restriction caused problems with existing 3943AML/ASL code that includes the Index byte without the string. When such AML 3944was disassembled, it could not be compiled without modification. Further, 3945the modified code created a resource template with a different size than the 3946original, breaking code that used fixed offsets into the resource template 3947buffer. 3948 3949Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3950byte. This byte is now emitted if present so that the exact AML can be 3951reproduced when the disassembled code is recompiled. 3952 3953Improved comments and text alignment for the resource descriptor code 3954emitted by the disassembler. 3955 3956Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3957Register() resource descriptor. 3958 3959---------------------------------------- 396030 September 2005. Summary of changes for version 20050930: 3961 39621) ACPI CA Core Subsystem: 3963 3964Completed a major overhaul of the Resource Manager code - specifically, 3965optimizations in the area of the AML/internal resource conversion code. The 3966code has been optimized to simplify and eliminate duplicated code, CPU stack 3967use has been decreased by optimizing function parameters and local 3968variables, and naming conventions across the manager have been standardized 3969for clarity and ease of maintenance (this includes function, parameter, 3970variable, and struct/typedef names.) The update may force changes in some 3971driver code, depending on how resources are handled by the host OS. 3972 3973All Resource Manager dispatch and information tables have been moved to a 3974single location for clarity and ease of maintenance. One new file was 3975created, named "rsinfo.c". 3976 3977The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3978guarantee that the argument is not evaluated twice, making them less prone 3979to macro side-effects. However, since there exists the possibility of 3980additional stack use if a particular compiler cannot optimize them (such as 3981in the debug generation case), the original macros are optionally available. 3982Note that some invocations of the return_VALUE macro may now cause size 3983mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3984eliminate these. (From Randy Dunlap) 3985 3986Implemented a new mechanism to enable debug tracing for individual control 3987methods. A new external interface, AcpiDebugTrace, is provided to enable 3988this mechanism. The intent is to allow the host OS to easily enable and 3989disable tracing for problematic control methods. This interface can be 3990easily exposed to a user or debugger interface if desired. See the file 3991psxface.c for details. 3992 3993AcpiUtCallocate will now return a valid pointer if a length of zero is 3994specified - a length of one is used and a warning is issued. This matches 3995the behavior of AcpiUtAllocate. 3996 3997Code and Data Size: The current and previous library sizes for the core 3998subsystem are shown below. These are the code and data sizes for the 3999acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4000values do not include any ACPI driver or OSPM code. The debug version of the 4001code includes the debug output trace mechanism and has a much larger code 4002and data size. Note that these values will vary depending on the efficiency 4003of the compiler and the compiler options used during generation. 4004 4005 Previous Release: 4006 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4007 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4008 Current Release: 4009 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4010 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4011 4012 40132) iASL Compiler/Disassembler: 4014 4015A remark is issued if the effective compile-time length of a package or 4016buffer is zero. Previously, this was a warning. 4017 4018---------------------------------------- 401916 September 2005. Summary of changes for version 20050916: 4020 40211) ACPI CA Core Subsystem: 4022 4023Fixed a problem within the Resource Manager where support for the Generic 4024Register descriptor was not fully implemented. This descriptor is now fully 4025recognized, parsed, disassembled, and displayed. 4026 4027Completely restructured the Resource Manager code to utilize table-driven 4028dispatch and lookup, eliminating many of the large switch() statements. This 4029reduces overall subsystem code size and code complexity. Affects the 4030resource parsing and construction, disassembly, and debug dump output. 4031 4032Cleaned up and restructured the debug dump output for all resource 4033descriptors. Improved readability of the output and reduced code size. 4034 4035Fixed a problem where changes to internal data structures caused the 4036optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4037 4038Code and Data Size: The current and previous library sizes for the core 4039subsystem are shown below. These are the code and data sizes for the 4040acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4041values do not include any ACPI driver or OSPM code. The debug version of the 4042code includes the debug output trace mechanism and has a much larger code 4043and data size. Note that these values will vary depending on the efficiency 4044of the compiler and the compiler options used during generation. 4045 4046 Previous Release: 4047 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4048 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4049 Current Release: 4050 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4051 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4052 4053 40542) iASL Compiler/Disassembler: 4055 4056Updated the disassembler to automatically insert an EndDependentFn() macro 4057into the ASL stream if this macro is missing in the original AML code, 4058simplifying compilation of the resulting ASL module. 4059 4060Fixed a problem in the disassembler where a disassembled ResourceSource 4061string (within a large resource descriptor) was not surrounded by quotes and 4062not followed by a comma, causing errors when the resulting ASL module was 4063compiled. Also, escape sequences within a ResourceSource string are now 4064handled correctly (especially "\\") 4065 4066---------------------------------------- 406702 September 2005. Summary of changes for version 20050902: 4068 40691) ACPI CA Core Subsystem: 4070 4071Fixed a problem with the internal Owner ID allocation and deallocation 4072mechanisms for control method execution and recursive method invocation. 4073This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4074messages seen on some systems. Recursive method invocation depth is 4075currently limited to 255. (Alexey Starikovskiy) 4076 4077Completely eliminated all vestiges of support for the "module-level 4078executable code" until this support is fully implemented and debugged. This 4079should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4080some systems that invoke this support. 4081 4082Fixed a problem within the resource manager code where the transaction flags 4083for a 64-bit address descriptor were handled incorrectly in the type- 4084specific flag byte. 4085 4086Consolidated duplicate code within the address descriptor resource manager 4087code, reducing overall subsystem code size. 4088 4089Fixed a fault when using the AML debugger "disassemble" command to 4090disassemble individual control methods. 4091 4092Removed references to the "release_current" directory within the Unix 4093release package. 4094 4095Code and Data Size: The current and previous core subsystem library sizes 4096are shown below. These are the code and data sizes for the acpica.lib 4097produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4098include any ACPI driver or OSPM code. The debug version of the code includes 4099the debug output trace mechanism and has a much larger code and data size. 4100Note that these values will vary depending on the efficiency of the compiler 4101and the compiler options used during generation. 4102 4103 Previous Release: 4104 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4105 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4106 Current Release: 4107 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4108 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4109 4110 41112) iASL Compiler/Disassembler: 4112 4113Implemented an error check for illegal duplicate values in the interrupt and 4114dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4115Interrupt(). 4116 4117Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4118too many values in the interrupt list (16 max) and invalid values in the 4119list (range 0 - 15) 4120 4121The maximum length string literal within an ASL file is now restricted to 4122200 characters as per the ACPI specification. 4123 4124Fixed a fault when using the -ln option (generate namespace listing). 4125 4126Implemented an error check to determine if a DescriptorName within a 4127resource descriptor has already been used within the current scope. 4128 4129---------------------------------------- 413015 August 2005. Summary of changes for version 20050815: 4131 41321) ACPI CA Core Subsystem: 4133 4134Implemented a full bytewise compare to determine if a table load request is 4135attempting to load a duplicate table. The compare is performed if the table 4136signatures and table lengths match. This will allow different tables with 4137the same OEM Table ID and revision to be loaded - probably against the ACPI 4138specification, but discovered in the field nonetheless. 4139 4140Added the changes.txt logfile to each of the zipped release packages. 4141 4142Code and Data Size: Current and previous core subsystem library sizes are 4143shown below. These are the code and data sizes for the acpica.lib produced 4144by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4145any ACPI driver or OSPM code. The debug version of the code includes the 4146debug output trace mechanism and has a much larger code and data size. Note 4147that these values will vary depending on the efficiency of the compiler and 4148the compiler options used during generation. 4149 4150 Previous Release: 4151 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4152 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4153 Current Release: 4154 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4155 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4156 4157 41582) iASL Compiler/Disassembler: 4159 4160Fixed a problem where incorrect AML code could be generated for Package 4161objects if optimization is disabled (via the -oa switch). 4162 4163Fixed a problem with where incorrect AML code is generated for variable- 4164length packages when the package length is not specified and the number of 4165initializer values is greater than 255. 4166 4167 4168---------------------------------------- 416929 July 2005. Summary of changes for version 20050729: 4170 41711) ACPI CA Core Subsystem: 4172 4173Implemented support to ignore an attempt to install/load a particular ACPI 4174table more than once. Apparently there exists BIOS code that repeatedly 4175attempts to load the same SSDT upon certain events. With assistance from 4176Venkatesh Pallipadi. 4177 4178Restructured the main interface to the AML parser in order to correctly 4179handle all exceptional conditions. This will prevent leakage of the OwnerId 4180resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4181machines. With assistance from Alexey Starikovskiy. 4182 4183Support for "module level code" has been disabled in this version due to a 4184number of issues that have appeared on various machines. The support can be 4185enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4186compilation. When the issues are fully resolved, the code will be enabled by 4187default again. 4188 4189Modified the internal functions for debug print support to define the 4190FunctionName parameter as a (const char *) for compatibility with compiler 4191built-in macros such as __FUNCTION__, etc. 4192 4193Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4194 4195Implemented support to display an object count summary for the AML Debugger 4196commands Object and Methods. 4197 4198Code and Data Size: Current and previous core subsystem library sizes are 4199shown below. These are the code and data sizes for the acpica.lib produced 4200by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4201any ACPI driver or OSPM code. The debug version of the code includes the 4202debug output trace mechanism and has a much larger code and data size. Note 4203that these values will vary depending on the efficiency of the compiler and 4204the compiler options used during generation. 4205 4206 Previous Release: 4207 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4208 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4209 Current Release: 4210 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4211 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4212 4213 42142) iASL Compiler/Disassembler: 4215 4216Fixed a regression that appeared in the 20050708 version of the compiler 4217where an error message was inadvertently emitted for invocations of the _OSI 4218reserved control method. 4219 4220---------------------------------------- 422108 July 2005. Summary of changes for version 20050708: 4222 42231) ACPI CA Core Subsystem: 4224 4225The use of the CPU stack in the debug version of the subsystem has been 4226considerably reduced. Previously, a debug structure was declared in every 4227function that used the debug macros. This structure has been removed in 4228favor of declaring the individual elements as parameters to the debug 4229functions. This reduces the cumulative stack use during nested execution of 4230ACPI function calls at the cost of a small increase in the code size of the 4231debug version of the subsystem. With assistance from Alexey Starikovskiy and 4232Len Brown. 4233 4234Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4235headers to define a macro that will return the current function name at 4236runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4237the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4238compiler-dependent header, the function name is saved on the CPU stack (one 4239pointer per function.) This mechanism is used because apparently there 4240exists no standard ANSI-C defined macro that that returns the function name. 4241 4242Redesigned and reimplemented the "Owner ID" mechanism used to track 4243namespace objects created/deleted by ACPI tables and control method 4244execution. A bitmap is now used to allocate and free the IDs, thus solving 4245the wraparound problem present in the previous implementation. The size of 4246the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4247Starikovskiy). 4248 4249Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4250flag definitions within the headers for the predefined ACPI tables. These 4251have been replaced by UINT8_BIT in order to increase the code portability of 4252the subsystem. If the use of UINT8 remains a problem, we may be forced to 4253eliminate bitfields entirely because of a lack of portability. 4254 4255Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4256is a frequently used function and this improvement increases the performance 4257of the entire subsystem (Alexey Starikovskiy). 4258 4259Fixed several possible memory leaks and the inverse - premature object 4260deletion (Alexey Starikovskiy). 4261 4262Code and Data Size: Current and previous core subsystem library sizes are 4263shown below. These are the code and data sizes for the acpica.lib produced 4264by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4265any ACPI driver or OSPM code. The debug version of the code includes the 4266debug output trace mechanism and has a much larger code and data size. Note 4267that these values will vary depending on the efficiency of the compiler and 4268the compiler options used during generation. 4269 4270 Previous Release: 4271 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4272 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4273 Current Release: 4274 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4275 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4276 4277---------------------------------------- 427824 June 2005. Summary of changes for version 20050624: 4279 42801) ACPI CA Core Subsystem: 4281 4282Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4283the host-defined cache object. This allows the OSL implementation to define 4284and type this object in any manner desired, simplifying the OSL 4285implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4286Linux, and should be defined in the OS-specific header file for other 4287operating systems as required. 4288 4289Changed the interface to AcpiOsAcquireObject to directly return the 4290requested object as the function return (instead of ACPI_STATUS.) This 4291change was made for performance reasons, since this is the purpose of the 4292interface in the first place. AcpiOsAcquireObject is now similar to the 4293AcpiOsAllocate interface. 4294 4295Implemented a new AML debugger command named Businfo. This command displays 4296information about all devices that have an associate _PRT object. The _ADR, 4297_HID, _UID, and _CID are displayed for these devices. 4298 4299Modified the initialization sequence in AcpiInitializeSubsystem to call the 4300OSL interface AcpiOslInitialize first, before any local initialization. This 4301change was required because the global initialization now calls OSL 4302interfaces. 4303 4304Enhanced the Dump command to display the entire contents of Package objects 4305(including all sub-objects and their values.) 4306 4307Restructured the code base to split some files because of size and/or 4308because the code logically belonged in a separate file. New files are listed 4309below. All makefiles and project files included in the ACPI CA release have 4310been updated. 4311 utilities/utcache.c /* Local cache interfaces */ 4312 utilities/utmutex.c /* Local mutex support */ 4313 utilities/utstate.c /* State object support */ 4314 interpreter/parser/psloop.c /* Main AML parse loop */ 4315 4316Code and Data Size: Current and previous core subsystem library sizes are 4317shown below. These are the code and data sizes for the acpica.lib produced 4318by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4319any ACPI driver or OSPM code. The debug version of the code includes the 4320debug output trace mechanism and has a much larger code and data size. Note 4321that these values will vary depending on the efficiency of the compiler and 4322the compiler options used during generation. 4323 4324 Previous Release: 4325 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4326 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4327 Current Release: 4328 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4329 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4330 4331 43322) iASL Compiler/Disassembler: 4333 4334Fixed a regression introduced in version 20050513 where the use of a Package 4335object within a Case() statement caused a compile time exception. The 4336original behavior has been restored (a Match() operator is emitted.) 4337 4338---------------------------------------- 433917 June 2005. Summary of changes for version 20050617: 4340 43411) ACPI CA Core Subsystem: 4342 4343Moved the object cache operations into the OS interface layer (OSL) to allow 4344the host OS to handle these operations if desired (for example, the Linux 4345OSL will invoke the slab allocator). This support is optional; the compile 4346time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4347code in the ACPI CA core. The new OSL interfaces are shown below. See 4348utalloc.c for an example implementation, and acpiosxf.h for the exact 4349interface definitions. With assistance from Alexey Starikovskiy. 4350 AcpiOsCreateCache 4351 AcpiOsDeleteCache 4352 AcpiOsPurgeCache 4353 AcpiOsAcquireObject 4354 AcpiOsReleaseObject 4355 4356Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4357and restore a flags parameter. This fits better with many OS lock models. 4358Note: the current execution state (interrupt handler or not) is no longer 4359passed to these interfaces. If necessary, the OSL must determine this state 4360by itself, a simple and fast operation. With assistance from Alexey 4361Starikovskiy. 4362 4363Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4364present if the revision of the RSDP was 2 or greater. According to the ACPI 4365specification, the XSDT is optional in all cases, and the table manager 4366therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4367Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4368only the RSDT. 4369 4370Fixed an interpreter problem with the Mid() operator in the case of an input 4371string where the resulting output string is of zero length. It now correctly 4372returns a valid, null terminated string object instead of a string object 4373with a null pointer. 4374 4375Fixed a problem with the control method argument handling to allow a store 4376to an Arg object that already contains an object of type Device. The Device 4377object is now correctly overwritten. Previously, an error was returned. 4378 4379 4380Enhanced the debugger Find command to emit object values in addition to the 4381found object pathnames. The output format is the same as the dump namespace 4382command. 4383 4384Enhanced the debugger Set command. It now has the ability to set the value 4385of any Named integer object in the namespace (Previously, only method locals 4386and args could be set.) 4387 4388Code and Data Size: Current and previous core subsystem library sizes are 4389shown below. These are the code and data sizes for the acpica.lib produced 4390by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4391any ACPI driver or OSPM code. The debug version of the code includes the 4392debug output trace mechanism and has a much larger code and data size. Note 4393that these values will vary depending on the efficiency of the compiler and 4394the compiler options used during generation. 4395 4396 Previous Release: 4397 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4398 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4399 Current Release: 4400 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4401 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4402 4403 44042) iASL Compiler/Disassembler: 4405 4406Fixed a regression in the disassembler where if/else/while constructs were 4407output incorrectly. This problem was introduced in the previous release 4408(20050526). This problem also affected the single-step disassembly in the 4409debugger. 4410 4411Fixed a problem where compiling the reserved _OSI method would randomly (but 4412rarely) produce compile errors. 4413 4414Enhanced the disassembler to emit compilable code in the face of incorrect 4415AML resource descriptors. If the optional ResourceSourceIndex is present, 4416but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4417disassembly. Otherwise, the resulting code cannot be compiled without 4418errors. 4419 4420---------------------------------------- 442126 May 2005. Summary of changes for version 20050526: 4422 44231) ACPI CA Core Subsystem: 4424 4425Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4426the module level (not within a control method.) These opcodes are executed 4427exactly once at the time the table is loaded. This type of code was legal up 4428until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4429order to provide backwards compatibility with earlier BIOS implementations. 4430This eliminates the "Encountered executable code at module level" warning 4431that was previously generated upon detection of such code. 4432 4433Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4434inadvertently be generated during the lookup of namespace objects in the 4435second pass parse of ACPI tables and control methods. It appears that this 4436problem could occur during the resolution of forward references to namespace 4437objects. 4438 4439Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4440corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4441allows the deadlock detection debug code to be compiled out in the normal 4442case, improving mutex performance (and overall subsystem performance) 4443considerably. 4444 4445Implemented a handful of miscellaneous fixes for possible memory leaks on 4446error conditions and error handling control paths. These fixes were 4447suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4448 4449Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4450to prevent a fault in this error case. 4451 4452Code and Data Size: Current and previous core subsystem library sizes are 4453shown below. These are the code and data sizes for the acpica.lib produced 4454by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4455any ACPI driver or OSPM code. The debug version of the code includes the 4456debug output trace mechanism and has a much larger code and data size. Note 4457that these values will vary depending on the efficiency of the compiler and 4458the compiler options used during generation. 4459 4460 Previous Release: 4461 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4462 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4463 Current Release: 4464 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4465 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4466 4467 44682) iASL Compiler/Disassembler: 4469 4470Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4471the module level (not within a control method.) These operators will be 4472executed once at the time the table is loaded. This type of code was legal 4473up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4474compiler in order to provide backwards compatibility with earlier BIOS ASL 4475code. 4476 4477The ACPI integer width (specified via the table revision ID or the -r 4478override, 32 or 64 bits) is now used internally during compile-time constant 4479folding to ensure that constants are truncated to 32 bits if necessary. 4480Previously, the revision ID value was only emitted in the AML table header. 4481 4482An error message is now generated for the Mutex and Method operators if the 4483SyncLevel parameter is outside the legal range of 0 through 15. 4484 4485Fixed a problem with the Method operator ParameterTypes list handling (ACPI 44863.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4487The actual underlying implementation of method argument typechecking is 4488still under development, however. 4489 4490---------------------------------------- 449113 May 2005. Summary of changes for version 20050513: 4492 44931) ACPI CA Core Subsystem: 4494 4495Implemented support for PCI Express root bridges -- added support for device 4496PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4497 4498The interpreter now automatically truncates incoming 64-bit constants to 32 4499bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4500also affects the iASL compiler constant folding. (Note: as per below, the 4501iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4502 4503Fixed a problem where string and buffer objects with "static" pointers 4504(pointers to initialization data within an ACPI table) were not handled 4505consistently. The internal object copy operation now always copies the data 4506to a newly allocated buffer, regardless of whether the source object is 4507static or not. 4508 4509Fixed a problem with the FromBCD operator where an implicit result 4510conversion was improperly performed while storing the result to the target 4511operand. Since this is an "explicit conversion" operator, the implicit 4512conversion should never be performed on the output. 4513 4514Fixed a problem with the CopyObject operator where a copy to an existing 4515named object did not always completely overwrite the existing object stored 4516at name. Specifically, a buffer-to-buffer copy did not delete the existing 4517buffer. 4518 4519Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4520structs for consistency. 4521 4522Code and Data Size: Current and previous core subsystem library sizes are 4523shown below. These are the code and data sizes for the acpica.lib produced 4524by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4525any ACPI driver or OSPM code. The debug version of the code includes the 4526debug output trace mechanism and has a much larger code and data size. Note 4527that these values will vary depending on the efficiency of the compiler and 4528the compiler options used during generation. 4529 4530 Previous Release: 4531 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4532 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4533 Current Release: (Same sizes) 4534 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4535 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4536 4537 45382) iASL Compiler/Disassembler: 4539 4540The compiler now emits a warning if an attempt is made to generate a 64-bit 4541integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4542is truncated to 32 bits. 4543 4544Fixed a problem with large package objects: if the static length of the 4545package is greater than 255, the "variable length package" opcode is 4546emitted. Previously, this caused an error. This requires an update to the 4547ACPI spec, since it currently (incorrectly) states that packages larger than 4548255 elements are not allowed. 4549 4550The disassembler now correctly handles variable length packages and packages 4551larger than 255 elements. 4552 4553---------------------------------------- 455408 April 2005. Summary of changes for version 20050408: 4555 45561) ACPI CA Core Subsystem: 4557 4558Fixed three cases in the interpreter where an "index" argument to an ASL 4559function was still (internally) 32 bits instead of the required 64 bits. 4560This was the Index argument to the Index, Mid, and Match operators. 4561 4562The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4563not a POSIX-defined function and not present in most kernel-level C 4564libraries. All references to the C library strupr function have been removed 4565from the headers. 4566 4567Completed the deployment of static functions/prototypes. All prototypes with 4568the static attribute have been moved from the headers to the owning C file. 4569 4570Implemented an extract option (-e) for the AcpiBin utility (AML binary 4571utility). This option allows the utility to extract individual ACPI tables 4572from the output of AcpiDmp. It provides the same functionality of the 4573acpixtract.pl perl script without the worry of setting the correct perl 4574options. AcpiBin runs on Windows and has not yet been generated/validated in 4575the Linux/Unix environment (but should be soon). 4576 4577Updated and fixed the table dump option for AcpiBin (-d). This option 4578converts a single ACPI table to a hex/ascii file, similar to the output of 4579AcpiDmp. 4580 4581Code and Data Size: Current and previous core subsystem library sizes are 4582shown below. These are the code and data sizes for the acpica.lib produced 4583by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4584any ACPI driver or OSPM code. The debug version of the code includes the 4585debug output trace mechanism and has a much larger code and data size. Note 4586that these values will vary depending on the efficiency of the compiler and 4587the compiler options used during generation. 4588 4589 Previous Release: 4590 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4591 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4592 Current 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 4596 45972) iASL Compiler/Disassembler: 4598 4599Disassembler fix: Added a check to ensure that the table length found in the 4600ACPI table header within the input file is not longer than the actual input 4601file size. This indicates some kind of file or table corruption. 4602 4603---------------------------------------- 460429 March 2005. Summary of changes for version 20050329: 4605 46061) ACPI CA Core Subsystem: 4607 4608An error is now generated if an attempt is made to create a Buffer Field of 4609length zero (A CreateField with a length operand of zero.) 4610 4611The interpreter now issues a warning whenever executable code at the module 4612level is detected during ACPI table load. This will give some idea of the 4613prevalence of this type of code. 4614 4615Implemented support for references to named objects (other than control 4616methods) within package objects. 4617 4618Enhanced package object output for the debug object. Package objects are now 4619completely dumped, showing all elements. 4620 4621Enhanced miscellaneous object output for the debug object. Any object can 4622now be written to the debug object (for example, a device object can be 4623written, and the type of the object will be displayed.) 4624 4625The "static" qualifier has been added to all local functions across both the 4626core subsystem and the iASL compiler. 4627 4628The number of "long" lines (> 80 chars) within the source has been 4629significantly reduced, by about 1/3. 4630 4631Cleaned up all header files to ensure that all CA/iASL functions are 4632prototyped (even static functions) and the formatting is consistent. 4633 4634Two new header files have been added, acopcode.h and acnames.h. 4635 4636Removed several obsolete functions that were no longer used. 4637 4638Code and Data Size: Current and previous core subsystem library sizes are 4639shown below. These are the code and data sizes for the acpica.lib produced 4640by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4641any ACPI driver or OSPM code. The debug version of the code includes the 4642debug output trace mechanism and has a much larger code and data size. Note 4643that these values will vary depending on the efficiency of the compiler and 4644the compiler options used during generation. 4645 4646 Previous Release: 4647 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4648 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4649 Current Release: 4650 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4651 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4652 4653 4654 46552) iASL Compiler/Disassembler: 4656 4657Fixed a problem with the resource descriptor generation/support. For the 4658ResourceSourceIndex and the ResourceSource fields, both must be present, or 4659both must be not present - can't have one without the other. 4660 4661The compiler now returns non-zero from the main procedure if any errors have 4662occurred during the compilation. 4663 4664 4665---------------------------------------- 466609 March 2005. Summary of changes for version 20050309: 4667 46681) ACPI CA Core Subsystem: 4669 4670The string-to-buffer implicit conversion code has been modified again after 4671a change to the ACPI specification. In order to match the behavior of the 4672other major ACPI implementation, the target buffer is no longer truncated if 4673the source string is smaller than an existing target buffer. This change 4674requires an update to the ACPI spec, and should eliminate the recent 4675AE_AML_BUFFER_LIMIT issues. 4676 4677The "implicit return" support was rewritten to a new algorithm that solves 4678the general case. Rather than attempt to determine when a method is about to 4679exit, the result of every ASL operator is saved momentarily until the very 4680next ASL operator is executed. Therefore, no matter how the method exits, 4681there will always be a saved implicit return value. This feature is only 4682enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4683AE_AML_NO_RETURN_VALUE errors when enabled. 4684 4685Implemented implicit conversion support for the predicate (operand) of the 4686If, Else, and While operators. String and Buffer arguments are automatically 4687converted to Integers. 4688 4689Changed the string-to-integer conversion behavior to match the new ACPI 4690errata: "If no integer object exists, a new integer is created. The ASCII 4691string is interpreted as a hexadecimal constant. Each string character is 4692interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4693with the first character as the most significant digit, and ending with the 4694first non-hexadecimal character or end-of-string." This means that the first 4695non-hex character terminates the conversion and this is the code that was 4696changed. 4697 4698Fixed a problem where the ObjectType operator would fail (fault) when used 4699on an Index of a Package which pointed to a null package element. The 4700operator now properly returns zero (Uninitialized) in this case. 4701 4702Fixed a problem where the While operator used excessive memory by not 4703properly popping the result stack during execution. There was no memory leak 4704after execution, however. (Code provided by Valery Podrezov.) 4705 4706Fixed a problem where references to control methods within Package objects 4707caused the method to be invoked, instead of producing a reference object 4708pointing to the method. 4709 4710Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4711improve performance and reduce code size. (Code provided by Alexey 4712Starikovskiy.) 4713 4714Code and Data Size: Current and previous core subsystem library sizes are 4715shown below. These are the code and data sizes for the acpica.lib produced 4716by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4717any ACPI driver or OSPM code. The debug version of the code includes the 4718debug output trace mechanism and has a much larger code and data size. Note 4719that these values will vary depending on the efficiency of the compiler and 4720the compiler options used during generation. 4721 4722 Previous Release: 4723 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4724 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4725 Current Release: 4726 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4727 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4728 4729 47302) iASL Compiler/Disassembler: 4731 4732Fixed a problem with the Return operator with no arguments. Since the AML 4733grammar for the byte encoding requires an operand for the Return opcode, the 4734compiler now emits a Return(Zero) for this case. An ACPI specification 4735update has been written for this case. 4736 4737For tables other than the DSDT, namepath optimization is automatically 4738disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4739compiler has no knowledge of where, and thus cannot optimize namepaths. 4740 4741Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4742inadvertently omitted from the ACPI specification, and will require an 4743update to the spec. 4744 4745The source file scan for ASCII characters is now optional (-a). This change 4746was made because some vendors place non-ascii characters within comments. 4747However, the scan is simply a brute-force byte compare to ensure all 4748characters in the file are in the range 0x00 to 0x7F. 4749 4750Fixed a problem with the CondRefOf operator where the compiler was 4751inappropriately checking for the existence of the target. Since the point of 4752the operator is to check for the existence of the target at run-time, the 4753compiler no longer checks for the target existence. 4754 4755Fixed a problem where errors generated from the internal AML interpreter 4756during constant folding were not handled properly, causing a fault. 4757 4758Fixed a problem with overly aggressive range checking for the Stall 4759operator. The valid range (max 255) is now only checked if the operand is of 4760type Integer. All other operand types cannot be statically checked. 4761 4762Fixed a problem where control method references within the RefOf, DeRefOf, 4763and ObjectType operators were not treated properly. They are now treated as 4764actual references, not method invocations. 4765 4766Fixed and enhanced the "list namespace" option (-ln). This option was broken 4767a number of releases ago. 4768 4769Improved error handling for the Field, IndexField, and BankField operators. 4770The compiler now cleanly reports and recovers from errors in the field 4771component (FieldUnit) list. 4772 4773Fixed a disassembler problem where the optional ResourceDescriptor fields 4774TRS and TTP were not always handled correctly. 4775 4776Disassembler - Comments in output now use "//" instead of "/*" 4777 4778---------------------------------------- 477928 February 2005. Summary of changes for version 20050228: 4780 47811) ACPI CA Core Subsystem: 4782 4783Fixed a problem where the result of an Index() operator (an object 4784reference) must increment the reference count on the target object for the 4785life of the object reference. 4786 4787Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4788Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4789resource descriptors. 4790 4791Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4792Space Descriptor" string, indicating interpreter support for the descriptors 4793above. 4794 4795Implemented header support for the new ACPI 3.0 FADT flag bits. 4796 4797Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4798status/enable registers. 4799 4800Updated header support for the MADT processor local Apic struct and MADT 4801platform interrupt source struct for new ACPI 3.0 fields. 4802 4803Implemented header support for the SRAT and SLIT ACPI tables. 4804 4805Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4806at runtime. 4807 4808Code and Data Size: Current and previous core subsystem library sizes are 4809shown below. These are the code and data sizes for the acpica.lib produced 4810by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4811any ACPI driver or OSPM code. The debug version of the code includes the 4812debug output trace mechanism and has a much larger code and data size. Note 4813that these values will vary depending on the efficiency of the compiler and 4814the compiler options used during generation. 4815 4816 Previous Release: 4817 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4818 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4819 Current Release: 4820 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4821 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4822 4823 48242) iASL Compiler/Disassembler: 4825 4826Fixed a problem with the internal 64-bit String-to-integer conversion with 4827strings less than two characters long. 4828 4829Fixed a problem with constant folding where the result of the Index() 4830operator can not be considered a constant. This means that Index() cannot be 4831a type3 opcode and this will require an update to the ACPI specification. 4832 4833Disassembler: Implemented support for the TTP, MTP, and TRS resource 4834descriptor fields. These fields were inadvertently ignored and not output in 4835the disassembly of the resource descriptor. 4836 4837 4838 ---------------------------------------- 483911 February 2005. Summary of changes for version 20050211: 4840 48411) ACPI CA Core Subsystem: 4842 4843Implemented ACPI 3.0 support for implicit conversion within the Match() 4844operator. MatchObjects can now be of type integer, buffer, or string instead 4845of just type integer. Package elements are implicitly converted to the type 4846of the MatchObject. This change aligns the behavior of Match() with the 4847behavior of the other logical operators (LLess(), etc.) It also requires an 4848errata change to the ACPI specification as this support was intended for 4849ACPI 3.0, but was inadvertently omitted. 4850 4851Fixed a problem with the internal implicit "to buffer" conversion. Strings 4852that are converted to buffers will cause buffer truncation if the string is 4853smaller than the target buffer. Integers that are converted to buffers will 4854not cause buffer truncation, only zero extension (both as per the ACPI 4855spec.) The problem was introduced when code was added to truncate the 4856buffer, but this should not be performed in all cases, only the string case. 4857 4858Fixed a problem with the Buffer and Package operators where the interpreter 4859would get confused if two such operators were used as operands to an ASL 4860operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4861stack was not being popped after the execution of these operators, resulting 4862in an AE_NO_RETURN_VALUE exception. 4863 4864Fixed a problem with constructs of the form Store(Index(...),...). The 4865reference object returned from Index was inadvertently resolved to an actual 4866value. This problem was introduced in version 20050114 when the behavior of 4867Store() was modified to restrict the object types that can be used as the 4868source operand (to match the ACPI specification.) 4869 4870Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4871 4872Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4873 4874Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4875 4876Code and Data Size: Current and previous core subsystem library sizes are 4877shown below. These are the code and data sizes for the acpica.lib produced 4878by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4879any ACPI driver or OSPM code. The debug version of the code includes the 4880debug output trace mechanism and has a much larger code and data size. Note 4881that these values will vary depending on the efficiency of the compiler and 4882the compiler options used during generation. 4883 4884 Previous Release: 4885 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4886 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4887 Current Release: 4888 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4889 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4890 4891 48922) iASL Compiler/Disassembler: 4893 4894Fixed a code generation problem in the constant folding optimization code 4895where incorrect code was generated if a constant was reduced to a buffer 4896object (i.e., a reduced type 5 opcode.) 4897 4898Fixed a typechecking problem for the ToBuffer operator. Caused by an 4899incorrect return type in the internal opcode information table. 4900 4901---------------------------------------- 490225 January 2005. Summary of changes for version 20050125: 4903 49041) ACPI CA Core Subsystem: 4905 4906Fixed a recently introduced problem with the Global Lock where the 4907underlying semaphore was not created. This problem was introduced in 4908version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4909Acquire() operation on _GL. 4910 4911The local object cache is now optional, and is disabled by default. Both 4912AcpiExec and the iASL compiler enable the cache because they run in user 4913mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4914to enable the local cache. 4915 4916Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4917optional "implicit return" support where an error was returned if no return 4918object was expected, but one was implicitly returned. AE_OK is now returned 4919in this case and the implicitly returned object is deleted. 4920AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4921methods such as _STA and _INI where the return type is known up front. 4922 4923Fixed a few issues with the internal convert-to-integer code. It now returns 4924an error if an attempt is made to convert a null string, a string of only 4925blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4926and explicit conversion via the ToInteger() operator. 4927 4928The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4929not needed for normal operation and should increase the performance of the 4930entire subsystem. The code remains in case it is needed for debug purposes 4931again. 4932 4933The AcpiExec source and makefile are included in the Unix/Linux package for 4934the first time. 4935 4936Code and Data Size: Current and previous core subsystem library sizes are 4937shown below. These are the code and data sizes for the acpica.lib produced 4938by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4939any ACPI driver or OSPM code. The debug version of the code includes the 4940debug output trace mechanism and has a much larger code and data size. Note 4941that these values will vary depending on the efficiency of the compiler and 4942the compiler options used during generation. 4943 4944 Previous Release: 4945 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4946 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4947 Current Release: 4948 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4949 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4950 49512) iASL Compiler/Disassembler: 4952 4953Switch/Case support: A warning is now issued if the type of the Switch value 4954cannot be determined at compile time. For example, Switch(Arg0) will 4955generate the warning, and the type is assumed to be an integer. As per the 4956ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4957warning. 4958 4959Switch/Case support: Implemented support for buffer and string objects as 4960the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4961buffers and strings. 4962 4963Switch/Case support: The emitted code for the LEqual() comparisons now uses 4964the switch value as the first operand, not the second. The case value is now 4965the second operand, and this allows the case value to be implicitly 4966converted to the type of the switch value, not the other way around. 4967 4968Switch/Case support: Temporary variables are now emitted immediately within 4969the control method, not at the global level. This means that there are now 497036 temps available per-method, not 36 temps per-module as was the case with 4971the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4972 4973---------------------------------------- 497414 January 2005. Summary of changes for version 20050114: 4975 4976Added 2005 copyright to all module headers. This affects every module in 4977the core subsystem, iASL compiler, and the utilities. 4978 49791) ACPI CA Core Subsystem: 4980 4981Fixed an issue with the String-to-Buffer conversion code where the string 4982null terminator was not included in the buffer after conversion, but there 4983is existing ASL that assumes the string null terminator is included. This is 4984the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4985introduced in the previous version when the code was updated to correctly 4986set the converted buffer size as per the ACPI specification. The ACPI spec 4987is ambiguous and will be updated to specify that the null terminator must be 4988included in the converted buffer. This also affects the ToBuffer() ASL 4989operator. 4990 4991Fixed a problem with the Mid() ASL/AML operator where it did not work 4992correctly on Buffer objects. Newly created sub-buffers were not being marked 4993as initialized. 4994 4995 4996Fixed a problem in AcpiTbFindTable where incorrect string compares were 4997performed on the OemId and OemTableId table header fields. These fields are 4998not null terminated, so strncmp is now used instead of strcmp. 4999 5000Implemented a restriction on the Store() ASL/AML operator to align the 5001behavior with the ACPI specification. Previously, any object could be used 5002as the source operand. Now, the only objects that may be used are Integers, 5003Buffers, Strings, Packages, Object References, and DDB Handles. If 5004necessary, the original behavior can be restored by enabling the 5005EnableInterpreterSlack flag. 5006 5007Enhanced the optional "implicit return" support to allow an implicit return 5008value from methods that are invoked externally via the AcpiEvaluateObject 5009interface. This enables implicit returns from the _STA and _INI methods, 5010for example. 5011 5012Changed the Revision() ASL/AML operator to return the current version of the 5013AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5014the supported ACPI version (This is the function of the _REV method). 5015 5016Updated the _REV predefined method to return the currently supported version 5017of ACPI, now 3. 5018 5019Implemented batch mode option for the AcpiExec utility (-b). 5020 5021Code and Data Size: Current and previous core subsystem library sizes are 5022shown below. These are the code and data sizes for the acpica.lib produced 5023by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5024any ACPI driver or OSPM code. The debug version of the code includes the 5025debug output trace mechanism and has a much larger code and data size. Note 5026that these values will vary depending on the efficiency of the compiler and 5027the compiler options used during generation. 5028 5029 Previous Release: 5030 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5031 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5032 Current Release: 5033 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5034 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5035 5036---------------------------------------- 503710 December 2004. Summary of changes for version 20041210: 5038 5039ACPI 3.0 support is nearing completion in both the iASL compiler and the 5040ACPI CA core subsystem. 5041 50421) ACPI CA Core Subsystem: 5043 5044Fixed a problem in the ToDecimalString operator where the resulting string 5045length was incorrectly calculated. The length is now calculated exactly, 5046eliminating incorrect AE_STRING_LIMIT exceptions. 5047 5048Fixed a problem in the ToHexString operator to allow a maximum 200 character 5049string to be produced. 5050 5051Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5052routine where the length of the resulting buffer was not truncated to the 5053new size (if the target buffer already existed). 5054 5055Code and Data Size: Current and previous core subsystem library sizes are 5056shown below. These are the code and data sizes for the acpica.lib produced 5057by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5058any ACPI driver or OSPM code. The debug version of the code includes the 5059debug output trace mechanism and has a much larger code and data size. Note 5060that these values will vary depending on the efficiency of the compiler and 5061the compiler options used during generation. 5062 5063 Previous Release: 5064 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5065 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5066 Current Release: 5067 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5068 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5069 5070 50712) iASL Compiler/Disassembler: 5072 5073Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5074ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5075Includes support in the disassembler. 5076 5077Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5078AccessSize. 5079 5080Fixed a problem where the _HE resource name for the Interrupt macro was 5081referencing bit 0 instead of bit 1. 5082 5083Implemented check for maximum 255 interrupts in the Interrupt macro. 5084 5085Fixed a problem with the predefined resource descriptor names where 5086incorrect AML code was generated if the offset within the resource buffer 5087was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5088but did not update the surrounding package lengths. 5089 5090Changes to the Dma macro: All channels within the channel list must be in 5091the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5092optional (default is BusMaster). 5093 5094Implemented check for maximum 7 data bytes for the VendorShort macro. 5095 5096The ReadWrite parameter is now optional for the Memory32 and similar macros. 5097 5098---------------------------------------- 509903 December 2004. Summary of changes for version 20041203: 5100 51011) ACPI CA Core Subsystem: 5102 5103The low-level field insertion/extraction code (exfldio) has been completely 5104rewritten to eliminate unnecessary complexity, bugs, and boundary 5105conditions. 5106 5107Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5108operators where the input operand could be inadvertently deleted if no 5109conversion was necessary (e.g., if the input to ToInteger was an Integer 5110object.) 5111 5112Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5113exception code was returned if the resulting string would be > 200 chars. 5114AE_STRING_LIMIT is now returned. 5115 5116Fixed a problem with the Concatenate operator where AE_OK was always 5117returned, even if the operation failed. 5118 5119Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5120semaphores to be allocated. 5121 5122Code and Data Size: Current and previous core subsystem library sizes are 5123shown below. These are the code and data sizes for the acpica.lib produced 5124by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5125any ACPI driver or OSPM code. The debug version of the code includes the 5126debug output trace mechanism and has a much larger code and data size. Note 5127that these values will vary depending on the efficiency of the compiler and 5128the compiler options used during generation. 5129 5130 Previous Release: 5131 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5132 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5133 Current Release: 5134 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5135 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5136 5137 51382) iASL Compiler/Disassembler: 5139 5140Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5141recently introduced in 20041119. 5142 5143Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5144byte was inadvertently set to zero. 5145 5146---------------------------------------- 514719 November 2004. Summary of changes for version 20041119: 5148 51491) ACPI CA Core Subsystem: 5150 5151Fixed a problem in the internal ConvertToInteger routine where new integers 5152were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5153buffers and strings to integers. 5154 5155Implemented support to store a value to an Index() on a String object. This 5156is an ACPI 2.0 feature that had not yet been implemented. 5157 5158Implemented new behavior for storing objects to individual package elements 5159(via the Index() operator). The previous behavior was to invoke the implicit 5160conversion rules if an object was already present at the index. The new 5161behavior is to simply delete any existing object and directly store the new 5162object. Although the ACPI specification seems unclear on this subject, other 5163ACPI implementations behave in this manner. (This is the root of the 5164AE_BAD_HEX_CONSTANT issue.) 5165 5166Modified the RSDP memory scan mechanism to support the extended checksum for 5167ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5168RSDP signature is found with a valid checksum. 5169 5170Code and Data Size: Current and previous core subsystem library sizes are 5171shown below. These are the code and data sizes for the acpica.lib produced 5172by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5173any ACPI driver or OSPM code. The debug version of the code includes the 5174debug output trace mechanism and has a much larger code and data size. Note 5175that these values will vary depending on the efficiency of the compiler and 5176the compiler options used during generation. 5177 5178 Previous Release: 5179 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5180 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5181 Current Release: 5182 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5183 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5184 5185 51862) iASL Compiler/Disassembler: 5187 5188Fixed a missing semicolon in the aslcompiler.y file. 5189 5190---------------------------------------- 519105 November 2004. Summary of changes for version 20041105: 5192 51931) ACPI CA Core Subsystem: 5194 5195Implemented support for FADT revision 2. This was an interim table (between 5196ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5197 5198Implemented optional support to allow uninitialized LocalX and ArgX 5199variables in a control method. The variables are initialized to an Integer 5200object with a value of zero. This support is enabled by setting the 5201AcpiGbl_EnableInterpreterSlack flag to TRUE. 5202 5203Implemented support for Integer objects for the SizeOf operator. Either 4 5204or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5205depending on the parent table revision). 5206 5207Fixed a problem in the implementation of the SizeOf and ObjectType operators 5208where the operand was resolved to a value too early, causing incorrect 5209return values for some objects. 5210 5211Fixed some possible memory leaks during exceptional conditions. 5212 5213Code and Data Size: Current and previous core subsystem library sizes are 5214shown below. These are the code and data sizes for the acpica.lib produced 5215by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5216any ACPI driver or OSPM code. The debug version of the code includes the 5217debug output trace mechanism and has a much larger code and data size. Note 5218that these values will vary depending on the efficiency of the compiler and 5219the compiler options used during generation. 5220 5221 Previous Release: 5222 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5223 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5224 Current Release: 5225 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5226 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5227 5228 52292) iASL Compiler/Disassembler: 5230 5231Implemented support for all ACPI 3.0 reserved names and methods. 5232 5233Implemented all ACPI 3.0 grammar elements in the front-end, including 5234support for semicolons. 5235 5236Implemented the ACPI 3.0 Function() and ToUUID() macros 5237 5238Fixed a problem in the disassembler where a Scope() operator would not be 5239emitted properly if the target of the scope was in another table. 5240 5241---------------------------------------- 524215 October 2004. Summary of changes for version 20041015: 5243 5244Note: ACPI CA is currently undergoing an in-depth and complete formal 5245evaluation to test/verify the following areas. Other suggestions are 5246welcome. This will result in an increase in the frequency of releases and 5247the number of bug fixes in the next few months. 5248 - Functional tests for all ASL/AML operators 5249 - All implicit/explicit type conversions 5250 - Bit fields and operation regions 5251 - 64-bit math support and 32-bit-only "truncated" math support 5252 - Exceptional conditions, both compiler and interpreter 5253 - Dynamic object deletion and memory leaks 5254 - ACPI 3.0 support when implemented 5255 - External interfaces to the ACPI subsystem 5256 5257 52581) ACPI CA Core Subsystem: 5259 5260Fixed two alignment issues on 64-bit platforms - within debug statements in 5261AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5262field within the non-aligned ACPI generic address structure. 5263 5264Fixed a problem in the Increment and Decrement operators where incorrect 5265operand resolution could result in the inadvertent modification of the 5266original integer when the integer is passed into another method as an 5267argument and the arg is then incremented/decremented. 5268 5269Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5270BCD number were truncated during conversion. 5271 5272Fixed a problem in the ToDecimal operator where the length of the resulting 5273string could be set incorrectly too long if the input operand was a Buffer 5274object. 5275 5276Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5277within a buffer would prematurely terminate a compare between buffer 5278objects. 5279 5280Added a check for string overflow (>200 characters as per the ACPI 5281specification) during the Concatenate operator with two string operands. 5282 5283Code and Data Size: Current and previous core subsystem library sizes are 5284shown below. These are the code and data sizes for the acpica.lib produced 5285by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5286any ACPI driver or OSPM code. The debug version of the code includes the 5287debug output trace mechanism and has a much larger code and data size. Note 5288that these values will vary depending on the efficiency of the compiler and 5289the compiler options used during generation. 5290 5291 Previous Release: 5292 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5293 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5294 Current Release: 5295 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5296 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5297 5298 5299 53002) iASL Compiler/Disassembler: 5301 5302Allow the use of the ObjectType operator on uninitialized Locals and Args 5303(returns 0 as per the ACPI specification). 5304 5305Fixed a problem where the compiler would fault if there was a syntax error 5306in the FieldName of all of the various CreateXXXField operators. 5307 5308Disallow the use of lower case letters within the EISAID macro, as per the 5309ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5310U is an uppercase letter and N is a hex digit. 5311 5312 5313---------------------------------------- 531406 October 2004. Summary of changes for version 20041006: 5315 53161) ACPI CA Core Subsystem: 5317 5318Implemented support for the ACPI 3.0 Timer operator. This ASL function 5319implements a 64-bit timer with 100 nanosecond granularity. 5320 5321Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5322implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5323the timer with the best clock available. Also, it keeps the core subsystem 5324out of the clock handling business, since the host OS (usually) performs 5325this function. 5326 5327Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5328functions use a 64-bit address which is part of the packed ACPI Generic 5329Address Structure. Since the structure is non-aligned, the alignment macros 5330are now used to extract the address to a local variable before use. 5331 5332Fixed a problem where the ToInteger operator assumed all input strings were 5333hexadecimal. The operator now handles both decimal strings and hex strings 5334(prefixed with "0x"). 5335 5336Fixed a problem where the string length in the string object created as a 5337result of the internal ConvertToString procedure could be incorrect. This 5338potentially affected all implicit conversions and also the ToDecimalString 5339and ToHexString operators. 5340 5341Fixed two problems in the ToString operator. If the length parameter was 5342zero, an incorrect string object was created and the value of the input 5343length parameter was inadvertently changed from zero to Ones. 5344 5345Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5346resource macro was ignored. 5347 5348Simplified the interfaces to the internal division functions, reducing code 5349size and complexity. 5350 5351Code and Data Size: Current and previous core subsystem library sizes are 5352shown below. These are the code and data sizes for the acpica.lib produced 5353by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5354any ACPI driver or OSPM code. The debug version of the code includes the 5355debug output trace mechanism and has a much larger code and data size. Note 5356that these values will vary depending on the efficiency of the compiler and 5357the compiler options used during generation. 5358 5359 Previous Release: 5360 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5361 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5362 Current Release: 5363 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5364 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5365 5366 53672) iASL Compiler/Disassembler: 5368 5369Implemented support for the ACPI 3.0 Timer operator. 5370 5371Fixed a problem where the Default() operator was inadvertently ignored in a 5372Switch/Case block. This was a problem in the translation of the Switch 5373statement to If...Else pairs. 5374 5375Added support to allow a standalone Return operator, with no parentheses (or 5376operands). 5377 5378Fixed a problem with code generation for the ElseIf operator where the 5379translated Else...If parse tree was improperly constructed leading to the 5380loss of some code. 5381 5382---------------------------------------- 538322 September 2004. Summary of changes for version 20040922: 5384 53851) ACPI CA Core Subsystem: 5386 5387Fixed a problem with the implementation of the LNot() operator where "Ones" 5388was not returned for the TRUE case. Changed the code to return Ones instead 5389of (!Arg) which was usually 1. This change affects iASL constant folding for 5390this operator also. 5391 5392Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5393initialized properly -- Now zero the entire buffer in this case where the 5394buffer already exists. 5395 5396Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5397Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5398related code considerably. This will require changes/updates to all OS 5399interface layers (OSLs.) 5400 5401Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5402a system exception handler to be installed. This handler is invoked upon any 5403run-time exception that occurs during control method execution. 5404 5405Added support for the DSDT in AcpiTbFindTable. This allows the 5406DataTableRegion() operator to access the local copy of the DSDT. 5407 5408Code and Data Size: Current and previous core subsystem library sizes are 5409shown below. These are the code and data sizes for the acpica.lib produced 5410by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5411any ACPI driver or OSPM code. The debug version of the code includes the 5412debug output trace mechanism and has a much larger code and data size. Note 5413that these values will vary depending on the efficiency of the compiler and 5414the compiler options used during generation. 5415 5416 Previous Release: 5417 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5418 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5419 Current Release: 5420 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5421 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5422 5423 54242) iASL Compiler/Disassembler: 5425 5426Fixed a problem with constant folding and the LNot operator. LNot was 5427returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5428could result in the generation of an incorrect folded/reduced constant. 5429 5430End-Of-File is now allowed within a "//"-style comment. A parse error no 5431longer occurs if such a comment is at the very end of the input ASL source 5432file. 5433 5434Implemented the "-r" option to override the Revision in the table header. 5435The initial use of this option will be to simplify the evaluation of the AML 5436interpreter by allowing a single ASL source module to be compiled for either 543732-bit or 64-bit integers. 5438 5439 5440---------------------------------------- 544127 August 2004. Summary of changes for version 20040827: 5442 54431) ACPI CA Core Subsystem: 5444 5445- Implemented support for implicit object conversion in the non-numeric 5446logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5447LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5448the second operand is implicitly converted on the fly to match the type of 5449the first operand. For example: 5450 5451 LEqual (Source1, Source2) 5452 5453Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5454The data type of Source1 dictates the required type of Source2. Source2 is 5455implicitly converted if necessary to match the type of Source1. 5456 5457- Updated and corrected the behavior of the string conversion support. The 5458rules concerning conversion of buffers to strings (according to the ACPI 5459specification) are as follows: 5460 5461ToDecimalString - explicit byte-wise conversion of buffer to string of 5462decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5463conversion of buffer to string of hex values (0-FF) separated by commas. 5464ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5465copy with no transform except NULL terminated. Any other implicit buffer-to- 5466string conversion - byte-wise conversion of buffer to string of hex values 5467(0-FF) separated by spaces. 5468 5469- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5470 5471- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5472one byte too short in the case of a node in the root scope. This could 5473cause a fault during debug output. 5474 5475- Code and Data Size: Current and previous core subsystem library sizes are 5476shown below. These are the code and data sizes for the acpica.lib produced 5477by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5478any ACPI driver or OSPM code. The debug version of the code includes the 5479debug output trace mechanism and has a much larger code and data size. Note 5480that these values will vary depending on the efficiency of the compiler and 5481the compiler options used during generation. 5482 5483 Previous Release: 5484 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5485 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5486 Current Release: 5487 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5488 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5489 5490 54912) iASL Compiler/Disassembler: 5492 5493- Fixed a Linux generation error. 5494 5495 5496---------------------------------------- 549716 August 2004. Summary of changes for version 20040816: 5498 54991) ACPI CA Core Subsystem: 5500 5501Designed and implemented support within the AML interpreter for the so- 5502called "implicit return". This support returns the result of the last ASL 5503operation within a control method, in the absence of an explicit Return() 5504operator. A few machines depend on this behavior, even though it is not 5505explicitly supported by the ASL language. It is optional support that can 5506be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5507 5508Removed support for the PCI_Config address space from the internal low level 5509hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5510support was not used internally, and would not work correctly anyway because 5511the PCI bus number and segment number were not supported. There are 5512separate interfaces for PCI configuration space access because of the unique 5513interface. 5514 5515Code and Data Size: Current and previous core subsystem library sizes are 5516shown below. These are the code and data sizes for the acpica.lib produced 5517by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5518any ACPI driver or OSPM code. The debug version of the code includes the 5519debug output trace mechanism and has a much larger code and data size. Note 5520that these values will vary depending on the efficiency of the compiler and 5521the compiler options used during generation. 5522 5523 Previous Release: 5524 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5525 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5526 Current Release: 5527 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5528 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5529 5530 55312) iASL Compiler/Disassembler: 5532 5533Fixed a problem where constants in ASL expressions at the root level (not 5534within a control method) could be inadvertently truncated during code 5535generation. This problem was introduced in the 20040715 release. 5536 5537 5538---------------------------------------- 553915 July 2004. Summary of changes for version 20040715: 5540 55411) ACPI CA Core Subsystem: 5542 5543Restructured the internal HW GPE interfaces to pass/track the current state 5544of interrupts (enabled/disabled) in order to avoid possible deadlock and 5545increase flexibility of the interfaces. 5546 5547Implemented a "lexicographical compare" for String and Buffer objects within 5548the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5549as per further clarification to the ACPI specification. Behavior is similar 5550to C library "strcmp". 5551 5552Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5553external function. In the 32-bit non-debug case, the stack use has been 5554reduced from 168 bytes to 32 bytes. 5555 5556Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5557whose purpose is to allow the AML interpreter to forgive certain bad AML 5558constructs. Default setting is FALSE. 5559 5560Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5561support code. If enabled, it allows field access to go beyond the end of a 5562region definition if the field is within the region length rounded up to the 5563next access width boundary (a common coding error.) 5564 5565Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5566ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5567symbols are lowercased by the latest version of the AcpiSrc tool. 5568 5569The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5570rename "Register" to simply "Reg" to prevent certain compilers from 5571complaining. 5572 5573Code and Data Size: Current and previous core subsystem library sizes are 5574shown below. These are the code and data sizes for the acpica.lib produced 5575by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5576any ACPI driver or OSPM code. The debug version of the code includes the 5577debug output trace mechanism and has a much larger code and data size. Note 5578that these values will vary depending on the efficiency of the compiler and 5579the compiler options used during generation. 5580 5581 Previous Release: 5582 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5583 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5584 Current Release: 5585 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5586 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5587 5588 55892) iASL Compiler/Disassembler: 5590 5591Implemented full support for Package objects within the Case() operator. 5592Note: The Break() operator is currently not supported within Case blocks 5593(TermLists) as there is some question about backward compatibility with ACPI 55941.0 interpreters. 5595 5596 5597Fixed a problem where complex terms were not supported properly within the 5598Switch() operator. 5599 5600Eliminated extraneous warning for compiler-emitted reserved names of the 5601form "_T_x". (Used in Switch/Case operators.) 5602 5603Eliminated optimization messages for "_T_x" objects and small constants 5604within the DefinitionBlock operator. 5605 5606 5607---------------------------------------- 560815 June 2004. Summary of changes for version 20040615: 5609 56101) ACPI CA Core Subsystem: 5611 5612Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5613following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5614LLessEqual. 5615 5616All directory names in the entire source package are lower case, as they 5617were in earlier releases. 5618 5619Implemented "Disassemble" command in the AML debugger that will disassemble 5620a single control method. 5621 5622Code and Data Size: Current and previous core subsystem library sizes are 5623shown below. These are the code and data sizes for the acpica.lib produced 5624by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5625any ACPI driver or OSPM code. The debug version of the code includes the 5626debug output trace mechanism and has a much larger code and data size. Note 5627that these values will vary depending on the efficiency of the compiler and 5628the compiler options used during generation. 5629 5630 Previous Release: 5631 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5632 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5633 5634 Current Release: 5635 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5636 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5637 5638 56392) iASL Compiler/Disassembler: 5640 5641Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5642following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5643LLessEqual. 5644 5645All directory names in the entire source package are lower case, as they 5646were in earlier releases. 5647 5648Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5649not found. 5650 5651Fixed an issue with the Windows version of the compiler where later versions 5652of Windows place the FADT in the registry under the name "FADT" and not 5653"FACP" as earlier versions did. This applies when using the -g or - 5654d<nofilename> options. The compiler now looks for both strings as 5655necessary. 5656 5657Fixed a problem with compiler namepath optimization where a namepath within 5658the Scope() operator could not be optimized if the namepath was a subpath of 5659the current scope path. 5660 5661---------------------------------------- 566227 May 2004. Summary of changes for version 20040527: 5663 56641) ACPI CA Core Subsystem: 5665 5666Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5667support in the RSDP scan code. The original code improperly scanned for the 5668EBDA by simply scanning from memory location 0 to 0x400. The correct method 5669is to first obtain the EBDA pointer from within the BIOS data area, then 5670scan 1K of memory starting at the EBDA pointer. There appear to be few if 5671any machines that place the RSDP in the EBDA, however. 5672 5673Integrated a fix for a possible fault during evaluation of BufferField 5674arguments. Obsolete code that was causing the problem was removed. 5675 5676Found and fixed a problem in the Field Support Code where data could be 5677corrupted on a bit field read that starts on an aligned boundary but does 5678not end on an aligned boundary. Merged the read/write "datum length" 5679calculation code into a common procedure. 5680 5681Rolled in a couple of changes to the FreeBSD-specific header. 5682 5683 5684Code and Data Size: Current and previous core subsystem library sizes are 5685shown below. These are the code and data sizes for the acpica.lib produced 5686by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5687any ACPI driver or OSPM code. The debug version of the code includes the 5688debug output trace mechanism and has a much larger code and data size. Note 5689that these values will vary depending on the efficiency of the compiler and 5690the compiler options used during generation. 5691 5692 Previous Release: 5693 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5694 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5695 Current Release: 5696 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5697 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5698 5699 57002) iASL Compiler/Disassembler: 5701 5702Fixed a generation warning produced by some overly-verbose compilers for a 570364-bit constant. 5704 5705---------------------------------------- 570614 May 2004. Summary of changes for version 20040514: 5707 57081) ACPI CA Core Subsystem: 5709 5710Fixed a problem where hardware GPE enable bits sometimes not set properly 5711during and after GPE method execution. Result of 04/27 changes. 5712 5713Removed extra "clear all GPEs" when sleeping/waking. 5714 5715Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5716AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5717the new AcpiEv* calls as appropriate. 5718 5719ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5720now "Microsoft Windows NT" for maximum compatibility. However this can be 5721changed by modifying the acconfig.h file. 5722 5723Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5724traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5725 5726Run _INI methods on ThermalZone objects. This is against the ACPI 5727specification, but there is apparently ASL code in the field that has these 5728_INI methods, and apparently "other" AML interpreters execute them. 5729 5730Performed a full 16/32/64 bit lint that resulted in some small changes. 5731 5732Added a sleep simulation command to the AML debugger to test sleep code. 5733 5734Code and Data Size: Current and previous core subsystem library sizes are 5735shown below. These are the code and data sizes for the acpica.lib produced 5736by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5737any ACPI driver or OSPM code. The debug version of the code includes the 5738debug output trace mechanism and has a much larger code and data size. Note 5739that these values will vary depending on the efficiency of the compiler and 5740the compiler options used during generation. 5741 5742 Previous Release: 5743 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5744 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5745 Current Release: 5746 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5747 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5748 5749---------------------------------------- 575027 April 2004. Summary of changes for version 20040427: 5751 57521) ACPI CA Core Subsystem: 5753 5754Completed a major overhaul of the GPE handling within ACPI CA. There are 5755now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5756The only GPEs allowed to be combination wake/run are for button-style 5757devices such as a control-method power button, control-method sleep button, 5758or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5759referenced by any _PRW methods are marked for "runtime" and hardware 5760enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5761(and disabled at runtime). However, at sleep time, only those GPEs that 5762have been specifically enabled for wake via the AcpiEnableGpe interface will 5763actually be hardware enabled. 5764 5765A new external interface has been added, AcpiSetGpeType(), that is meant to 5766be used by device drivers to force a GPE to a particular type. It will be 5767especially useful for the drivers for the button devices mentioned above. 5768 5769Completed restructuring of the ACPI CA initialization sequence so that 5770default operation region handlers are installed before GPEs are initialized 5771and the _PRW methods are executed. This will prevent errors when the _PRW 5772methods attempt to access system memory or I/O space. 5773 5774GPE enable/disable no longer reads the GPE enable register. We now keep the 5775enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5776thus no longer depend on the hardware to maintain these bits. 5777 5778Always clear the wake status and fixed/GPE status bits before sleep, even 5779for state S5. 5780 5781Improved the AML debugger output for displaying the GPE blocks and their 5782current status. 5783 5784Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5785x = 0,1,2,3,4. 5786 5787Fixed a problem where the physical address was incorrectly calculated when 5788the Load() operator was used to directly load from an Operation Region (vs. 5789loading from a Field object.) Also added check for minimum table length for 5790this case. 5791 5792Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5793mutex release. 5794 5795Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5796consistency with the other fields returned. 5797 5798Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5799structure for each GPE in the system, so the size of this structure is 5800important. 5801 5802CPU stack requirement reduction: Cleaned up the method execution and object 5803evaluation paths so that now a parameter structure is passed, instead of 5804copying the various method parameters over and over again. 5805 5806In evregion.c: Correctly exit and reenter the interpreter region if and 5807only if dispatching an operation region request to a user-installed handler. 5808Do not exit/reenter when dispatching to a default handler (e.g., default 5809system memory or I/O handlers) 5810 5811 5812Notes for updating drivers for the new GPE support. The following changes 5813must be made to ACPI-related device drivers that are attached to one or more 5814GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5815 58161) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5817explicitly call AcpiEnableGpe. 58182) There is a new interface called AcpiSetGpeType. This should be called 5819before enabling the GPE. Also, this interface will automatically disable 5820the GPE if it is currently enabled. 58213) AcpiEnableGpe no longer supports a GPE type flag. 5822 5823Specific drivers that must be changed: 58241) EC driver: 5825 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5826AeGpeHandler, NULL); 5827 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5828 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5829 58302) Button Drivers (Power, Lid, Sleep): 5831Run _PRW method under parent device 5832If _PRW exists: /* This is a control-method button */ 5833 Extract GPE number and possibly GpeDevice 5834 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5835 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5836 5837For all other devices that have _PRWs, we automatically set the GPE type to 5838ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5839must be done on a selective basis, usually requiring some kind of user app 5840to allow the user to pick the wake devices. 5841 5842 5843Code and Data Size: Current and previous core subsystem library sizes are 5844shown below. These are the code and data sizes for the acpica.lib produced 5845by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5846any ACPI driver or OSPM code. The debug version of the code includes the 5847debug output trace mechanism and has a much larger code and data size. Note 5848that these values will vary depending on the efficiency of the compiler and 5849the compiler options used during generation. 5850 5851 Previous Release: 5852 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5853 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5854 Current Release: 5855 5856 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5857 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5858 5859 5860 5861---------------------------------------- 586202 April 2004. Summary of changes for version 20040402: 5863 58641) ACPI CA Core Subsystem: 5865 5866Fixed an interpreter problem where an indirect store through an ArgX 5867parameter was incorrectly applying the "implicit conversion rules" during 5868the store. From the ACPI specification: "If the target is a method local or 5869argument (LocalX or ArgX), no conversion is performed and the result is 5870stored directly to the target". The new behavior is to disable implicit 5871conversion during ALL stores to an ArgX. 5872 5873Changed the behavior of the _PRW method scan to ignore any and all errors 5874returned by a given _PRW. This prevents the scan from aborting from the 5875failure of any single _PRW. 5876 5877Moved the runtime configuration parameters from the global init procedure to 5878static variables in acglobal.h. This will allow the host to override the 5879default values easily. 5880 5881Code and Data Size: Current and previous core subsystem library sizes are 5882shown below. These are the code and data sizes for the acpica.lib produced 5883by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5884any ACPI driver or OSPM code. The debug version of the code includes the 5885debug output trace mechanism and has a much larger code and data size. Note 5886that these values will vary depending on the efficiency of the compiler and 5887the compiler options used during generation. 5888 5889 Previous Release: 5890 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5891 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5892 Current Release: 5893 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5894 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5895 5896 58972) iASL Compiler/Disassembler: 5898 5899iASL now fully disassembles SSDTs. However, External() statements are not 5900generated automatically for unresolved symbols at this time. This is a 5901planned feature for future implementation. 5902 5903Fixed a scoping problem in the disassembler that occurs when the type of the 5904target of a Scope() operator is overridden. This problem caused an 5905incorrectly nested internal namespace to be constructed. 5906 5907Any warnings or errors that are emitted during disassembly are now commented 5908out automatically so that the resulting file can be recompiled without any 5909hand editing. 5910 5911---------------------------------------- 591226 March 2004. Summary of changes for version 20040326: 5913 59141) ACPI CA Core Subsystem: 5915 5916Implemented support for "wake" GPEs via interaction between GPEs and the 5917_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5918identified as a WAKE GPE and by default will no longer be enabled at 5919runtime. Previously, we were blindly enabling all GPEs with a corresponding 5920_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5921believe this has been the cause of thousands of "spurious" GPEs on some 5922systems. 5923 5924This new GPE behavior is can be reverted to the original behavior (enable 5925ALL GPEs at runtime) via a runtime flag. 5926 5927Fixed a problem where aliased control methods could not access objects 5928properly. The proper scope within the namespace was not initialized 5929(transferred to the target of the aliased method) before executing the 5930target method. 5931 5932Fixed a potential race condition on internal object deletion on the return 5933object in AcpiEvaluateObject. 5934 5935Integrated a fix for resource descriptors where both _MEM and _MTP were 5936being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5937wide, 0x0F instead of 0x03.) 5938 5939Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5940fault in some cases. 5941 5942Updated Notify() values for debug statements in evmisc.c 5943 5944Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5945 5946Code and Data Size: Current and previous core subsystem library sizes are 5947shown below. These are the code and data sizes for the acpica.lib produced 5948by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5949any ACPI driver or OSPM code. The debug version of the code includes the 5950debug output trace mechanism and has a much larger code and data size. Note 5951that these values will vary depending on the efficiency of the compiler and 5952the compiler options used during generation. 5953 5954 Previous Release: 5955 5956 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5957 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5958 Current Release: 5959 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5960 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5961 5962---------------------------------------- 596311 March 2004. Summary of changes for version 20040311: 5964 59651) ACPI CA Core Subsystem: 5966 5967Fixed a problem where errors occurring during the parse phase of control 5968method execution did not abort cleanly. For example, objects created and 5969installed in the namespace were not deleted. This caused all subsequent 5970invocations of the method to return the AE_ALREADY_EXISTS exception. 5971 5972Implemented a mechanism to force a control method to "Serialized" execution 5973if the method attempts to create namespace objects. (The root of the 5974AE_ALREADY_EXISTS problem.) 5975 5976Implemented support for the predefined _OSI "internal" control method. 5977Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5978"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5979This feature will allow "other" operating systems to execute the fully 5980tested, "Windows" code path through the ASL code 5981 5982Global Lock Support: Now allows multiple acquires and releases with any 5983internal thread. Removed concept of "owning thread" for this special mutex. 5984 5985Fixed two functions that were inappropriately declaring large objects on the 5986CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5987method execution considerably. 5988 5989Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5990S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5991 5992Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5993defined on the machine. 5994 5995Implemented two runtime options: One to force all control method execution 5996to "Serialized" to mimic Windows behavior, another to disable _OSI support 5997if it causes problems on a given machine. 5998 5999Code and Data Size: Current and previous core subsystem library sizes are 6000shown below. These are the code and data sizes for the acpica.lib produced 6001by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6002any ACPI driver or OSPM code. The debug version of the code includes the 6003debug output trace mechanism and has a much larger code and data size. Note 6004that these values will vary depending on the efficiency of the compiler and 6005the compiler options used during generation. 6006 6007 Previous Release: 6008 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6009 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6010 Current Release: 6011 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6012 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6013 60142) iASL Compiler/Disassembler: 6015 6016Fixed an array size problem for FreeBSD that would cause the compiler to 6017fault. 6018 6019---------------------------------------- 602020 February 2004. Summary of changes for version 20040220: 6021 6022 60231) ACPI CA Core Subsystem: 6024 6025Implemented execution of _SxD methods for Device objects in the 6026GetObjectInfo interface. 6027 6028Fixed calls to _SST method to pass the correct arguments. 6029 6030Added a call to _SST on wake to restore to "working" state. 6031 6032Check for End-Of-Buffer failure case in the WalkResources interface. 6033 6034Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6035structures to the beginning of the file. 6036 6037After wake, clear GPE status register(s) before enabling GPEs. 6038 6039After wake, clear/enable power button. (Perhaps we should clear/enable all 6040fixed events upon wake.) 6041 6042Fixed a couple of possible memory leaks in the Namespace manager. 6043 6044Integrated latest acnetbsd.h file. 6045 6046---------------------------------------- 604711 February 2004. Summary of changes for version 20040211: 6048 6049 60501) ACPI CA Core Subsystem: 6051 6052Completed investigation and implementation of the call-by-reference 6053mechanism for control method arguments. 6054 6055Fixed a problem where a store of an object into an indexed package could 6056fail if the store occurs within a different method than the method that 6057created the package. 6058 6059Fixed a problem where the ToDecimal operator could return incorrect results. 6060 6061Fixed a problem where the CopyObject operator could fail on some of the more 6062obscure objects (e.g., Reference objects.) 6063 6064Improved the output of the Debug object to display buffer, package, and 6065index objects. 6066 6067Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6068the expected result. 6069 6070Added permanent ACPI_REPORT_ERROR macros for all instances of the 6071ACPI_AML_INTERNAL exception. 6072 6073Integrated latest version of acfreebsd.h 6074 6075---------------------------------------- 607616 January 2004. Summary of changes for version 20040116: 6077 6078The purpose of this release is primarily to update the copyright years in 6079each module, thus causing a huge number of diffs. There are a few small 6080functional changes, however. 6081 60821) ACPI CA Core Subsystem: 6083 6084Improved error messages when there is a problem finding one or more of the 6085required base ACPI tables 6086 6087Reintroduced the definition of APIC_HEADER in actbl.h 6088 6089Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6090 6091Removed extraneous reference to NewObj in dsmthdat.c 6092 60932) iASL compiler 6094 6095Fixed a problem introduced in December that disabled the correct disassembly 6096of Resource Templates 6097 6098 6099---------------------------------------- 610003 December 2003. Summary of changes for version 20031203: 6101 61021) ACPI CA Core Subsystem: 6103 6104Changed the initialization of Operation Regions during subsystem 6105init to perform two entire walks of the ACPI namespace; The first 6106to initialize the regions themselves, the second to execute the 6107_REG methods. This fixed some interdependencies across _REG 6108methods found on some machines. 6109 6110Fixed a problem where a Store(Local0, Local1) could simply update 6111the object reference count, and not create a new copy of the 6112object if the Local1 is uninitialized. 6113 6114Implemented support for the _SST reserved method during sleep 6115transitions. 6116 6117Implemented support to clear the SLP_TYP and SLP_EN bits when 6118waking up, this is apparently required by some machines. 6119 6120When sleeping, clear the wake status only if SleepState is not S5. 6121 6122Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6123pointer arithmetic advanced a string pointer too far. 6124 6125Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6126could be returned if the requested table has not been loaded. 6127 6128Within the support for IRQ resources, restructured the handling of 6129the active and edge/level bits. 6130 6131Fixed a few problems in AcpiPsxExecute() where memory could be 6132leaked under certain error conditions. 6133 6134Improved error messages for the cases where the ACPI mode could 6135not be entered. 6136 6137Code and Data Size: Current and previous core subsystem library 6138sizes are shown below. These are the code and data sizes for the 6139acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6140these values do not include any ACPI driver or OSPM code. The 6141debug version of the code includes the debug output trace 6142mechanism and has a much larger code and data size. Note that 6143these values will vary depending on the efficiency of the compiler 6144and the compiler options used during generation. 6145 6146 Previous Release (20031029): 6147 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6148 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6149 Current Release: 6150 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6151 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6152 61532) iASL Compiler/Disassembler: 6154 6155Implemented a fix for the iASL disassembler where a bad index was 6156generated. This was most noticeable on 64-bit platforms 6157 6158 6159---------------------------------------- 616029 October 2003. Summary of changes for version 20031029: 6161 61621) ACPI CA Core Subsystem: 6163 6164 6165Fixed a problem where a level-triggered GPE with an associated 6166_Lxx control method was incorrectly cleared twice. 6167 6168Fixed a problem with the Field support code where an access can 6169occur beyond the end-of-region if the field is non-aligned but 6170extends to the very end of the parent region (resulted in an 6171AE_AML_REGION_LIMIT exception.) 6172 6173Fixed a problem with ACPI Fixed Events where an RT Clock handler 6174would not get invoked on an RTC event. The RTC event bitmasks for 6175the PM1 registers were not being initialized properly. 6176 6177Implemented support for executing _STA and _INI methods for 6178Processor objects. Although this is currently not part of the 6179ACPI specification, there is existing ASL code that depends on the 6180init-time execution of these methods. 6181 6182Implemented and deployed a GetDescriptorName function to decode 6183the various types of internal descriptors. Guards against null 6184descriptors during debug output also. 6185 6186Implemented and deployed a GetNodeName function to extract the 4- 6187character namespace node name. This function simplifies the debug 6188and error output, as well as guarding against null pointers during 6189output. 6190 6191Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6192simplify the debug and error output of 64-bit integers. This 6193macro replaces the HIDWORD and LODWORD macros for dumping these 6194integers. 6195 6196Updated the implementation of the Stall() operator to only call 6197AcpiOsStall(), and also return an error if the operand is larger 6198than 255. This preserves the required behavior of not 6199relinquishing the processor, as would happen if AcpiOsSleep() was 6200called for "long stalls". 6201 6202Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6203initialized are now treated as NOOPs. 6204 6205Cleaned up a handful of warnings during 64-bit generation. 6206 6207Fixed a reported error where and incorrect GPE number was passed 6208to the GPE dispatch handler. This value is only used for error 6209output, however. Used this opportunity to clean up and streamline 6210the GPE dispatch code. 6211 6212Code and Data Size: Current and previous core subsystem library 6213sizes are shown below. These are the code and data sizes for the 6214acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6215these values do not include any ACPI driver or OSPM code. The 6216 6217debug version of the code includes the debug output trace 6218mechanism and has a much larger code and data size. Note that 6219these values will vary depending on the efficiency of the compiler 6220and the compiler options used during generation. 6221 6222 Previous Release (20031002): 6223 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6224 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6225 Current Release: 6226 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6227 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6228 6229 62302) iASL Compiler/Disassembler: 6231 6232Updated the iASL compiler to return an error if the operand to the 6233Stall() operator is larger than 255. 6234 6235 6236---------------------------------------- 623702 October 2003. Summary of changes for version 20031002: 6238 6239 62401) ACPI CA Core Subsystem: 6241 6242Fixed a problem with Index Fields where the index was not 6243incremented for fields that require multiple writes to the 6244index/data registers (Fields that are wider than the data 6245register.) 6246 6247Fixed a problem with all Field objects where a write could go 6248beyond the end-of-field if the field was larger than the access 6249granularity and therefore required multiple writes to complete the 6250request. An extra write beyond the end of the field could happen 6251inadvertently. 6252 6253Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6254would incorrectly be returned if the width of the Data Register 6255was larger than the specified field access width. 6256 6257Completed fixes for LoadTable() and Unload() and verified their 6258operation. Implemented full support for the "DdbHandle" object 6259throughout the ACPI CA subsystem. 6260 6261Implemented full support for the MADT and ECDT tables in the ACPI 6262CA header files. Even though these tables are not directly 6263consumed by ACPI CA, the header definitions are useful for ACPI 6264device drivers. 6265 6266Integrated resource descriptor fixes posted to the Linux ACPI 6267list. This included checks for minimum descriptor length, and 6268support for trailing NULL strings within descriptors that have 6269optional string elements. 6270 6271Code and Data Size: Current and previous core subsystem library 6272sizes are shown below. These are the code and data sizes for the 6273acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6274these values do not include any ACPI driver or OSPM code. The 6275debug version of the code includes the debug output trace 6276mechanism and has a much larger code and data size. Note that 6277these values will vary depending on the efficiency of the compiler 6278and the compiler options used during generation. 6279 6280 Previous Release (20030918): 6281 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6282 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6283 Current Release: 6284 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6285 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6286 6287 62882) iASL Compiler: 6289 6290Implemented detection of non-ASCII characters within the input 6291source ASL file. This catches attempts to compile binary (AML) 6292files early in the compile, with an informative error message. 6293 6294Fixed a problem where the disassembler would fault if the output 6295filename could not be generated or if the output file could not be 6296opened. 6297 6298---------------------------------------- 629918 September 2003. Summary of changes for version 20030918: 6300 6301 63021) ACPI CA Core Subsystem: 6303 6304Found and fixed a longstanding problem with the late execution of 6305the various deferred AML opcodes (such as Operation Regions, 6306Buffer Fields, Buffers, and Packages). If the name string 6307specified for the name of the new object placed the object in a 6308scope other than the current scope, the initialization/execution 6309of the opcode failed. The solution to this problem was to 6310implement a mechanism where the late execution of such opcodes 6311does not attempt to lookup/create the name a second time in an 6312incorrect scope. This fixes the "region size computed 6313incorrectly" problem. 6314 6315Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6316Global Lock AE_BAD_PARAMETER error. 6317 6318Fixed several 64-bit issues with prototypes, casting and data 6319types. 6320 6321Removed duplicate prototype from acdisasm.h 6322 6323Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6324 6325Code and Data Size: Current and previous core subsystem library 6326sizes are shown below. These are the code and data sizes for the 6327acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6328these values do not include any ACPI driver or OSPM code. The 6329debug version of the code includes the debug output trace 6330mechanism and has a much larger code and data size. Note that 6331these values will vary depending on the efficiency of the compiler 6332and the compiler options used during generation. 6333 6334 Previous Release: 6335 6336 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6337 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6338 Current Release: 6339 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6340 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6341 6342 63432) Linux: 6344 6345Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6346correct sleep time in seconds. 6347 6348---------------------------------------- 634914 July 2003. Summary of changes for version 20030619: 6350 63511) ACPI CA Core Subsystem: 6352 6353Parse SSDTs in order discovered, as opposed to reverse order 6354(Hrvoje Habjanic) 6355 6356Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6357Klausner, 6358 Nate Lawson) 6359 6360 63612) Linux: 6362 6363Dynamically allocate SDT list (suggested by Andi Kleen) 6364 6365proc function return value cleanups (Andi Kleen) 6366 6367Correctly handle NMI watchdog during long stalls (Andrew Morton) 6368 6369Make it so acpismp=force works (reported by Andrew Morton) 6370 6371 6372---------------------------------------- 637319 June 2003. Summary of changes for version 20030619: 6374 63751) ACPI CA Core Subsystem: 6376 6377Fix To/FromBCD, eliminating the need for an arch-specific #define. 6378 6379Do not acquire a semaphore in the S5 shutdown path. 6380 6381Fix ex_digits_needed for 0. (Takayoshi Kochi) 6382 6383Fix sleep/stall code reversal. (Andi Kleen) 6384 6385Revert a change having to do with control method calling 6386semantics. 6387 63882) Linux: 6389 6390acpiphp update (Takayoshi Kochi) 6391 6392Export acpi_disabled for sonypi (Stelian Pop) 6393 6394Mention acpismp=force in config help 6395 6396Re-add acpitable.c and acpismp=force. This improves backwards 6397 6398compatibility and also cleans up the code to a significant degree. 6399 6400Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6401 6402---------------------------------------- 640322 May 2003. Summary of changes for version 20030522: 6404 64051) ACPI CA Core Subsystem: 6406 6407Found and fixed a reported problem where an AE_NOT_FOUND error 6408occurred occasionally during _BST evaluation. This turned out to 6409be an Owner ID allocation issue where a called method did not get 6410a new ID assigned to it. Eventually, (after 64k calls), the Owner 6411ID UINT16 would wraparound so that the ID would be the same as the 6412caller's and the called method would delete the caller's 6413namespace. 6414 6415Implemented extended error reporting for control methods that are 6416aborted due to a run-time exception. Output includes the exact 6417AML instruction that caused the method abort, a dump of the method 6418locals and arguments at the time of the abort, and a trace of all 6419nested control method calls. 6420 6421Modified the interpreter to allow the creation of buffers of zero 6422length from the AML code. Implemented new code to ensure that no 6423attempt is made to actually allocate a memory buffer (of length 6424zero) - instead, a simple buffer object with a NULL buffer pointer 6425and length zero is created. A warning is no longer issued when 6426the AML attempts to create a zero-length buffer. 6427 6428Implemented a workaround for the "leading asterisk issue" in 6429_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6430asterisk is automatically removed if present in any HID, UID, or 6431CID strings. The iASL compiler will still flag this asterisk as 6432an error, however. 6433 6434Implemented full support for _CID methods that return a package of 6435multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6436now additionally returns a device _CID list if present. This 6437required a change to the external interface in order to pass an 6438ACPI_BUFFER object as a parameter since the _CID list is of 6439variable length. 6440 6441Fixed a problem with the new AE_SAME_HANDLER exception where 6442handler initialization code did not know about this exception. 6443 6444Code and Data Size: Current and previous core subsystem library 6445sizes are shown below. These are the code and data sizes for the 6446acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6447these values do not include any ACPI driver or OSPM code. The 6448debug version of the code includes the debug output trace 6449mechanism and has a much larger code and data size. Note that 6450these values will vary depending on the efficiency of the compiler 6451and the compiler options used during generation. 6452 6453 Previous Release (20030509): 6454 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6455 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6456 Current Release: 6457 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6458 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6459 6460 64612) Linux: 6462 6463Fixed a bug in which we would reinitialize the ACPI interrupt 6464after it was already working, thus disabling all ACPI and the IRQs 6465for any other device sharing the interrupt. (Thanks to Stian 6466Jordet) 6467 6468Toshiba driver update (John Belmonte) 6469 6470Return only 0 or 1 for our interrupt handler status (Andrew 6471Morton) 6472 6473 64743) iASL Compiler: 6475 6476Fixed a reported problem where multiple (nested) ElseIf() 6477statements were not handled correctly by the compiler, resulting 6478in incorrect warnings and incorrect AML code. This was a problem 6479in both the ASL parser and the code generator. 6480 6481 64824) Documentation: 6483 6484Added changes to existing interfaces, new exception codes, and new 6485text concerning reference count object management versus garbage 6486collection. 6487 6488---------------------------------------- 648909 May 2003. Summary of changes for version 20030509. 6490 6491 64921) ACPI CA Core Subsystem: 6493 6494Changed the subsystem initialization sequence to hold off 6495installation of address space handlers until the hardware has been 6496initialized and the system has entered ACPI mode. This is because 6497the installation of space handlers can cause _REG methods to be 6498run. Previously, the _REG methods could potentially be run before 6499ACPI mode was enabled. 6500 6501Fixed some memory leak issues related to address space handler and 6502notify handler installation. There were some problems with the 6503reference count mechanism caused by the fact that the handler 6504objects are shared across several namespace objects. 6505 6506Fixed a reported problem where reference counts within the 6507namespace were not properly updated when named objects created by 6508method execution were deleted. 6509 6510Fixed a reported problem where multiple SSDTs caused a deletion 6511issue during subsystem termination. Restructured the table data 6512structures to simplify the linked lists and the related code. 6513 6514Fixed a problem where the table ID associated with secondary 6515tables (SSDTs) was not being propagated into the namespace objects 6516created by those tables. This would only present a problem for 6517tables that are unloaded at run-time, however. 6518 6519Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6520type as the length parameter (instead of UINT32). 6521 6522Solved a long-standing problem where an ALREADY_EXISTS error 6523appears on various systems. This problem could happen when there 6524are multiple PCI_Config operation regions under a single PCI root 6525bus. This doesn't happen very frequently, but there are some 6526systems that do this in the ASL. 6527 6528Fixed a reported problem where the internal DeleteNode function 6529was incorrectly handling the case where a namespace node was the 6530first in the parent's child list, and had additional peers (not 6531the only child, but first in the list of children.) 6532 6533Code and Data Size: Current core subsystem library sizes are shown 6534below. These are the code and data sizes for the acpica.lib 6535produced by the Microsoft Visual C++ 6.0 compiler, and these 6536values do not include any ACPI driver or OSPM code. The debug 6537version of the code includes the debug output trace mechanism and 6538has a much larger code and data size. Note that these values will 6539vary depending on the efficiency of the compiler and the compiler 6540options used during generation. 6541 6542 Previous Release 6543 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6544 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6545 Current Release: 6546 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6547 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6548 6549 65502) Linux: 6551 6552Allow ":" in OS override string (Ducrot Bruno) 6553 6554Kobject fix (Greg KH) 6555 6556 65573 iASL Compiler/Disassembler: 6558 6559Fixed a problem in the generation of the C source code files (AML 6560is emitted in C source statements for BIOS inclusion) where the 6561Ascii dump that appears within a C comment at the end of each line 6562could cause a compile time error if the AML sequence happens to 6563have an open comment or close comment sequence embedded. 6564 6565 6566---------------------------------------- 656724 April 2003. Summary of changes for version 20030424. 6568 6569 65701) ACPI CA Core Subsystem: 6571 6572Support for big-endian systems has been implemented. Most of the 6573support has been invisibly added behind big-endian versions of the 6574ACPI_MOVE_* macros. 6575 6576Fixed a problem in AcpiHwDisableGpeBlock() and 6577AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6578low level hardware write routine. The offset parameter was 6579actually eliminated from the low level read/write routines because 6580they had become obsolete. 6581 6582Fixed a problem where a handler object was deleted twice during 6583the removal of a fixed event handler. 6584 6585 65862) Linux: 6587 6588A fix for SMP systems with link devices was contributed by 6589 6590Compaq's Dan Zink. 6591 6592(2.5) Return whether we handled the interrupt in our IRQ handler. 6593(Linux ISRs no longer return void, so we can propagate the handler 6594return value from the ACPI CA core back to the OS.) 6595 6596 6597 65983) Documentation: 6599 6600The ACPI CA Programmer Reference has been updated to reflect new 6601interfaces and changes to existing interfaces. 6602 6603---------------------------------------- 660428 March 2003. Summary of changes for version 20030328. 6605 66061) ACPI CA Core Subsystem: 6607 6608The GPE Block Device support has been completed. New interfaces 6609are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6610interfaces (enable, disable, clear, getstatus) have been split 6611into separate interfaces for Fixed Events and General Purpose 6612Events (GPEs) in order to support GPE Block Devices properly. 6613 6614Fixed a problem where the error message "Failed to acquire 6615semaphore" would appear during operations on the embedded 6616controller (EC). 6617 6618Code and Data Size: Current core subsystem library sizes are shown 6619below. These are the code and data sizes for the acpica.lib 6620produced by the Microsoft Visual C++ 6.0 compiler, and these 6621values do not include any ACPI driver or OSPM code. The debug 6622version of the code includes the debug output trace mechanism and 6623has a much larger code and data size. Note that these values will 6624vary depending on the efficiency of the compiler and the compiler 6625options used during generation. 6626 6627 Previous Release 6628 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6629 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6630 Current Release: 6631 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6632 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6633 6634 6635---------------------------------------- 663628 February 2003. Summary of changes for version 20030228. 6637 6638 66391) ACPI CA Core Subsystem: 6640 6641The GPE handling and dispatch code has been completely overhauled 6642in preparation for support of GPE Block Devices (ID ACPI0006). 6643This affects internal data structures and code only; there should 6644be no differences visible externally. One new file has been 6645added, evgpeblk.c 6646 6647The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6648fields that are used to determine the GPE block lengths. The 6649REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6650structures are ignored. This is per the ACPI specification but it 6651isn't very clear. The full 256 Block 0/1 GPEs are now supported 6652(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6653 6654In the SCI interrupt handler, removed the read of the PM1_CONTROL 6655register to look at the SCI_EN bit. On some machines, this read 6656causes an SMI event and greatly slows down SCI events. (This may 6657in fact be the cause of slow battery status response on some 6658systems.) 6659 6660Fixed a problem where a store of a NULL string to a package object 6661could cause the premature deletion of the object. This was seen 6662during execution of the battery _BIF method on some systems, 6663resulting in no battery data being returned. 6664 6665Added AcpiWalkResources interface to simplify parsing of resource 6666lists. 6667 6668Code and Data Size: Current core subsystem library sizes are shown 6669below. These are the code and data sizes for the acpica.lib 6670produced by the Microsoft Visual C++ 6.0 compiler, and these 6671values do not include any ACPI driver or OSPM code. The debug 6672version of the code includes the debug output trace mechanism and 6673has a much larger code and data size. Note that these values will 6674vary depending on the efficiency of the compiler and the compiler 6675options used during generation. 6676 6677 Previous Release 6678 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6679 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6680 Current Release: 6681 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6682 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6683 6684 66852) Linux 6686 6687S3 fixes (Ole Rohne) 6688 6689Update ACPI PHP driver with to use new acpi_walk_resource API 6690(Bjorn Helgaas) 6691 6692Add S4BIOS support (Pavel Machek) 6693 6694Map in entire table before performing checksum (John Stultz) 6695 6696Expand the mem= cmdline to allow the specification of reserved and 6697ACPI DATA blocks (Pavel Machek) 6698 6699Never use ACPI on VISWS 6700 6701Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6702 6703Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6704causing us to think that some systems support C2 when they really 6705don't. 6706 6707Do not count processor objects for non-present CPUs (Thanks to 6708Dominik Brodowski) 6709 6710 67113) iASL Compiler: 6712 6713Fixed a problem where ASL include files could not be found and 6714opened. 6715 6716Added support for the _PDC reserved name. 6717 6718 6719---------------------------------------- 672022 January 2003. Summary of changes for version 20030122. 6721 6722 67231) ACPI CA Core Subsystem: 6724 6725Added a check for constructs of the form: Store (Local0, Local0) 6726where Local0 is not initialized. Apparently, some BIOS 6727programmers believe that this is a NOOP. Since this store doesn't 6728do anything anyway, the new prototype behavior will ignore this 6729error. This is a case where we can relax the strict checking in 6730the interpreter in the name of compatibility. 6731 6732 67332) Linux 6734 6735The AcpiSrc Source Conversion Utility has been released with the 6736Linux package for the first time. This is the utility that is 6737used to convert the ACPI CA base source code to the Linux version. 6738 6739(Both) Handle P_BLK lengths shorter than 6 more gracefully 6740 6741(Both) Move more headers to include/acpi, and delete an unused 6742header. 6743 6744(Both) Move drivers/acpi/include directory to include/acpi 6745 6746(Both) Boot functions don't use cmdline, so don't pass it around 6747 6748(Both) Remove include of unused header (Adrian Bunk) 6749 6750(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6751the 6752former now also includes the latter, acpiphp.h only needs the one, 6753now. 6754 6755(2.5) Make it possible to select method of bios restoring after S3 6756resume. [=> no more ugly ifdefs] (Pavel Machek) 6757 6758(2.5) Make proc write interfaces work (Pavel Machek) 6759 6760(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6761 6762(2.5) Break out ACPI Perf code into its own module, under cpufreq 6763(Dominik Brodowski) 6764 6765(2.4) S4BIOS support (Ducrot Bruno) 6766 6767(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6768Visinoni) 6769 6770 67713) iASL Compiler: 6772 6773Added support to disassemble SSDT and PSDTs. 6774 6775Implemented support to obtain SSDTs from the Windows registry if 6776available. 6777 6778 6779---------------------------------------- 678009 January 2003. Summary of changes for version 20030109. 6781 67821) ACPI CA Core Subsystem: 6783 6784Changed the behavior of the internal Buffer-to-String conversion 6785function. The current ACPI specification states that the contents 6786of the buffer are "converted to a string of two-character 6787hexadecimal numbers, each separated by a space". Unfortunately, 6788this definition is not backwards compatible with existing ACPI 1.0 6789implementations (although the behavior was not defined in the ACPI 67901.0 specification). The new behavior simply copies data from the 6791buffer to the string until a null character is found or the end of 6792the buffer is reached. The new String object is always null 6793terminated. This problem was seen during the generation of _BIF 6794battery data where incorrect strings were returned for battery 6795type, etc. This will also require an errata to the ACPI 6796specification. 6797 6798Renamed all instances of NATIVE_UINT and NATIVE_INT to 6799ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6800 6801Copyright in all module headers (both Linux and non-Linux) has be 6802updated to 2003. 6803 6804Code and Data Size: Current core subsystem library sizes are shown 6805below. These are the code and data sizes for the acpica.lib 6806produced by the Microsoft Visual C++ 6.0 compiler, and these 6807values do not include any ACPI driver or OSPM code. The debug 6808version of the code includes the debug output trace mechanism and 6809has a much larger code and data size. Note that these values will 6810vary depending on the efficiency of the compiler and the compiler 6811options used during generation. 6812 6813 Previous Release 6814 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6815 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6816 Current Release: 6817 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6818 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6819 6820 68212) Linux 6822 6823Fixed an oops on module insertion/removal (Matthew Tippett) 6824 6825(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6826 6827(2.5) Replace pr_debug (Randy Dunlap) 6828 6829(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6830 6831(Both) Eliminate spawning of thread from timer callback, in favor 6832of schedule_work() 6833 6834(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6835 6836(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6837 6838(Both) Add missing statics to button.c (Pavel Machek) 6839 6840Several changes have been made to the source code translation 6841utility that generates the Linux Code in order to make the code 6842more "Linux-like": 6843 6844All typedefs on structs and unions have been removed in keeping 6845with the Linux coding style. 6846 6847Removed the non-Linux SourceSafe module revision number from each 6848module header. 6849 6850Completed major overhaul of symbols to be lowercased for linux. 6851Doubled the number of symbols that are lowercased. 6852 6853Fixed a problem where identifiers within procedure headers and 6854within quotes were not fully lower cased (they were left with a 6855starting capital.) 6856 6857Some C macros whose only purpose is to allow the generation of 16- 6858bit code are now completely removed in the Linux code, increasing 6859readability and maintainability. 6860 6861---------------------------------------- 6862 686312 December 2002. Summary of changes for version 20021212. 6864 6865 68661) ACPI CA Core Subsystem: 6867 6868Fixed a problem where the creation of a zero-length AML Buffer 6869would cause a fault. 6870 6871Fixed a problem where a Buffer object that pointed to a static AML 6872buffer (in an ACPI table) could inadvertently be deleted, causing 6873memory corruption. 6874 6875Fixed a problem where a user buffer (passed in to the external 6876ACPI CA interfaces) could be overwritten if the buffer was too 6877small to complete the operation, causing memory corruption. 6878 6879Fixed a problem in the Buffer-to-String conversion code where a 6880string of length one was always returned, regardless of the size 6881of the input Buffer object. 6882 6883Removed the NATIVE_CHAR data type across the entire source due to 6884lack of need and lack of consistent use. 6885 6886Code and Data Size: Current core subsystem library sizes are shown 6887below. These are the code and data sizes for the acpica.lib 6888produced by the Microsoft Visual C++ 6.0 compiler, and these 6889values do not include any ACPI driver or OSPM code. The debug 6890version of the code includes the debug output trace mechanism and 6891has a much larger code and data size. Note that these values will 6892vary depending on the efficiency of the compiler and the compiler 6893options used during generation. 6894 6895 Previous Release 6896 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6897 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6898 Current Release: 6899 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6900 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6901 6902 6903---------------------------------------- 690405 December 2002. Summary of changes for version 20021205. 6905 69061) ACPI CA Core Subsystem: 6907 6908Fixed a problem where a store to a String or Buffer object could 6909cause corruption of the DSDT if the object type being stored was 6910the same as the target object type and the length of the object 6911being stored was equal to or smaller than the original (existing) 6912target object. This was seen to cause corruption of battery _BIF 6913buffers if the _BIF method modified the buffer on the fly. 6914 6915Fixed a problem where an internal error was generated if a control 6916method invocation was used in an OperationRegion, Buffer, or 6917Package declaration. This was caused by the deferred parsing of 6918the control method and thus the deferred creation of the internal 6919method object. The solution to this problem was to create the 6920internal method object at the moment the method is encountered in 6921the first pass - so that subsequent references to the method will 6922able to obtain the required parameter count and thus properly 6923parse the method invocation. This problem presented itself as an 6924AE_AML_INTERNAL during the pass 1 parse phase during table load. 6925 6926Fixed a problem where the internal String object copy routine did 6927not always allocate sufficient memory for the target String object 6928and caused memory corruption. This problem was seen to cause 6929"Allocation already present in list!" errors as memory allocation 6930became corrupted. 6931 6932Implemented a new function for the evaluation of namespace objects 6933that allows the specification of the allowable return object 6934types. This simplifies a lot of code that checks for a return 6935object of one or more specific objects returned from the 6936evaluation (such as _STA, etc.) This may become and external 6937function if it would be useful to ACPI-related drivers. 6938 6939Completed another round of prefixing #defines with "ACPI_" for 6940clarity. 6941 6942Completed additional code restructuring to allow more modular 6943linking for iASL compiler and AcpiExec. Several files were split 6944creating new files. New files: nsparse.c dsinit.c evgpe.c 6945 6946Implemented an abort mechanism to terminate an executing control 6947method via the AML debugger. This feature is useful for debugging 6948control methods that depend (wait) for specific hardware 6949responses. 6950 6951Code and Data Size: Current core subsystem library sizes are shown 6952below. These are the code and data sizes for the acpica.lib 6953produced by the Microsoft Visual C++ 6.0 compiler, and these 6954values do not include any ACPI driver or OSPM code. The debug 6955version of the code includes the debug output trace mechanism and 6956has a much larger code and data size. Note that these values will 6957vary depending on the efficiency of the compiler and the compiler 6958options used during generation. 6959 6960 Previous Release 6961 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6962 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6963 Current Release: 6964 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6965 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6966 6967 69682) iASL Compiler/Disassembler 6969 6970Fixed a compiler code generation problem for "Interrupt" Resource 6971Descriptors. If specified in the ASL, the optional "Resource 6972Source Index" and "Resource Source" fields were not inserted into 6973the correct location within the AML resource descriptor, creating 6974an invalid descriptor. 6975 6976Fixed a disassembler problem for "Interrupt" resource descriptors. 6977The optional "Resource Source Index" and "Resource Source" fields 6978were ignored. 6979 6980 6981---------------------------------------- 698222 November 2002. Summary of changes for version 20021122. 6983 6984 69851) ACPI CA Core Subsystem: 6986 6987Fixed a reported problem where an object stored to a Method Local 6988or Arg was not copied to a new object during the store - the 6989object pointer was simply copied to the Local/Arg. This caused 6990all subsequent operations on the Local/Arg to also affect the 6991original source of the store operation. 6992 6993Fixed a problem where a store operation to a Method Local or Arg 6994was not completed properly if the Local/Arg contained a reference 6995(from RefOf) to a named field. The general-purpose store-to- 6996namespace-node code is now used so that this case is handled 6997automatically. 6998 6999Fixed a problem where the internal object copy routine would cause 7000a protection fault if the object being copied was a Package and 7001contained either 1) a NULL package element or 2) a nested sub- 7002package. 7003 7004Fixed a problem with the GPE initialization that resulted from an 7005ambiguity in the ACPI specification. One section of the 7006specification states that both the address and length of the GPE 7007block must be zero if the block is not supported. Another section 7008implies that only the address need be zero if the block is not 7009supported. The code has been changed so that both the address and 7010the length must be non-zero to indicate a valid GPE block (i.e., 7011if either the address or the length is zero, the GPE block is 7012invalid.) 7013 7014Code and Data Size: Current core subsystem library sizes are shown 7015below. These are the code and data sizes for the acpica.lib 7016produced by the Microsoft Visual C++ 6.0 compiler, and these 7017values do not include any ACPI driver or OSPM code. The debug 7018version of the code includes the debug output trace mechanism and 7019has a much larger code and data size. Note that these values will 7020vary depending on the efficiency of the compiler and the compiler 7021options used during generation. 7022 7023 Previous Release 7024 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7025 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7026 Current Release: 7027 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7028 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7029 7030 70312) Linux 7032 7033Cleaned up EC driver. Exported an external EC read/write 7034interface. By going through this, other drivers (most notably 7035sonypi) will be able to serialize access to the EC. 7036 7037 70383) iASL Compiler/Disassembler 7039 7040Implemented support to optionally generate include files for both 7041ASM and C (the -i switch). This simplifies BIOS development by 7042automatically creating include files that contain external 7043declarations for the symbols that are created within the 7044 7045(optionally generated) ASM and C AML source files. 7046 7047 7048---------------------------------------- 704915 November 2002. Summary of changes for version 20021115. 7050 70511) ACPI CA Core Subsystem: 7052 7053Fixed a memory leak problem where an error during resolution of 7054 7055method arguments during a method invocation from another method 7056failed to cleanup properly by deleting all successfully resolved 7057argument objects. 7058 7059Fixed a problem where the target of the Index() operator was not 7060correctly constructed if the source object was a package. This 7061problem has not been detected because the use of a target operand 7062with Index() is very rare. 7063 7064Fixed a problem with the Index() operator where an attempt was 7065made to delete the operand objects twice. 7066 7067Fixed a problem where an attempt was made to delete an operand 7068twice during execution of the CondRefOf() operator if the target 7069did not exist. 7070 7071Implemented the first of perhaps several internal create object 7072functions that create and initialize a specific object type. This 7073consolidates duplicated code wherever the object is created, thus 7074shrinking the size of the subsystem. 7075 7076Implemented improved debug/error messages for errors that occur 7077during nested method invocations. All executing method pathnames 7078are displayed (with the error) as the call stack is unwound - thus 7079simplifying debug. 7080 7081Fixed a problem introduced in the 10/02 release that caused 7082premature deletion of a buffer object if a buffer was used as an 7083ASL operand where an integer operand is required (Thus causing an 7084implicit object conversion from Buffer to Integer.) The change in 7085the 10/02 release was attempting to fix a memory leak (albeit 7086incorrectly.) 7087 7088Code and Data Size: Current core subsystem library sizes are shown 7089below. These are the code and data sizes for the acpica.lib 7090produced by the Microsoft Visual C++ 6.0 compiler, and these 7091values do not include any ACPI driver or OSPM code. The debug 7092version of the code includes the debug output trace mechanism and 7093has a much larger code and data size. Note that these values will 7094vary depending on the efficiency of the compiler and the compiler 7095options used during generation. 7096 7097 Previous Release 7098 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7099 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7100 Current Release: 7101 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7102 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7103 7104 71052) Linux 7106 7107Changed the implementation of the ACPI semaphores to use down() 7108instead of down_interruptable(). It is important that the 7109execution of ACPI control methods not be interrupted by signals. 7110Methods must run to completion, or the system may be left in an 7111unknown/unstable state. 7112 7113Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7114(Shawn Starr) 7115 7116 71173) iASL Compiler/Disassembler 7118 7119 7120Changed the default location of output files. All output files 7121are now placed in the current directory by default instead of in 7122the directory of the source file. This change may affect some 7123existing makefiles, but it brings the behavior of the compiler in 7124line with other similar tools. The location of the output files 7125can be overridden with the -p command line switch. 7126 7127 7128---------------------------------------- 712911 November 2002. Summary of changes for version 20021111. 7130 7131 71320) ACPI Specification 2.0B is released and is now available at: 7133http://www.acpi.info/index.html 7134 7135 71361) ACPI CA Core Subsystem: 7137 7138Implemented support for the ACPI 2.0 SMBus Operation Regions. 7139This includes the early detection and handoff of the request to 7140the SMBus region handler (avoiding all of the complex field 7141support code), and support for the bidirectional return packet 7142from an SMBus write operation. This paves the way for the 7143development of SMBus drivers in each host operating system. 7144 7145Fixed a problem where the semaphore WAIT_FOREVER constant was 7146defined as 32 bits, but must be 16 bits according to the ACPI 7147specification. This had the side effect of causing ASL 7148Mutex/Event timeouts even though the ASL code requested a wait 7149forever. Changed all internal references to the ACPI timeout 7150parameter to 16 bits to prevent future problems. Changed the name 7151of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7152 7153Code and Data Size: Current core subsystem library sizes are shown 7154below. These are the code and data sizes for the acpica.lib 7155produced by the Microsoft Visual C++ 6.0 compiler, and these 7156values do not include any ACPI driver or OSPM code. The debug 7157version of the code includes the debug output trace mechanism and 7158has a much larger code and data size. Note that these values will 7159vary depending on the efficiency of the compiler and the compiler 7160options used during generation. 7161 7162 Previous Release 7163 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7164 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7165 Current Release: 7166 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7167 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7168 7169 71702) Linux 7171 7172Module loading/unloading fixes (John Cagle) 7173 7174 71753) iASL Compiler/Disassembler 7176 7177Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7178 7179Implemented support for the disassembly of all SMBus protocol 7180keywords (SMBQuick, SMBWord, etc.) 7181 7182---------------------------------------- 718301 November 2002. Summary of changes for version 20021101. 7184 7185 71861) ACPI CA Core Subsystem: 7187 7188Fixed a problem where platforms that have a GPE1 block but no GPE0 7189block were not handled correctly. This resulted in a "GPE 7190overlap" error message. GPE0 is no longer required. 7191 7192Removed code added in the previous release that inserted nodes 7193into the namespace in alphabetical order. This caused some side- 7194effects on various machines. The root cause of the problem is 7195still under investigation since in theory, the internal ordering 7196of the namespace nodes should not matter. 7197 7198 7199Enhanced error reporting for the case where a named object is not 7200found during control method execution. The full ACPI namepath 7201(name reference) of the object that was not found is displayed in 7202this case. 7203 7204Note: as a result of the overhaul of the namespace object types in 7205the previous release, the namespace nodes for the predefined 7206scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7207instead of ACPI_TYPE_ANY. This simplifies the namespace 7208management code but may affect code that walks the namespace tree 7209looking for specific object types. 7210 7211Code and Data Size: Current core subsystem library sizes are shown 7212below. These are the code and data sizes for the acpica.lib 7213produced by the Microsoft Visual C++ 6.0 compiler, and these 7214values do not include any ACPI driver or OSPM code. The debug 7215version of the code includes the debug output trace mechanism and 7216has a much larger code and data size. Note that these values will 7217vary depending on the efficiency of the compiler and the compiler 7218options used during generation. 7219 7220 Previous Release 7221 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7222 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7223 Current Release: 7224 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7225 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7226 7227 72282) Linux 7229 7230Fixed a problem introduced in the previous release where the 7231Processor and Thermal objects were not recognized and installed in 7232/proc. This was related to the scope type change described above. 7233 7234 72353) iASL Compiler/Disassembler 7236 7237Implemented the -g option to get all of the required ACPI tables 7238from the registry and save them to files (Windows version of the 7239compiler only.) The required tables are the FADT, FACS, and DSDT. 7240 7241Added ACPI table checksum validation during table disassembly in 7242order to catch corrupted tables. 7243 7244 7245---------------------------------------- 724622 October 2002. Summary of changes for version 20021022. 7247 72481) ACPI CA Core Subsystem: 7249 7250Implemented a restriction on the Scope operator that the target 7251must already exist in the namespace at the time the operator is 7252encountered (during table load or method execution). In other 7253words, forward references are not allowed and Scope() cannot 7254create a new object. This changes the previous behavior where the 7255interpreter would create the name if not found. This new behavior 7256correctly enables the search-to-root algorithm during namespace 7257lookup of the target name. Because of this upsearch, this fixes 7258the known Compaq _SB_.OKEC problem and makes both the AML 7259interpreter and iASL compiler compatible with other ACPI 7260implementations. 7261 7262Completed a major overhaul of the internal ACPI object types for 7263the ACPI Namespace and the associated operand objects. Many of 7264these types had become obsolete with the introduction of the two- 7265pass namespace load. This cleanup simplifies the code and makes 7266the entire namespace load mechanism much clearer and easier to 7267understand. 7268 7269Improved debug output for tracking scope opening/closing to help 7270diagnose scoping issues. The old scope name as well as the new 7271scope name are displayed. Also improved error messages for 7272problems with ASL Mutex objects and error messages for GPE 7273problems. 7274 7275Cleaned up the namespace dump code, removed obsolete code. 7276 7277All string output (for all namespace/object dumps) now uses the 7278common ACPI string output procedure which handles escapes properly 7279and does not emit non-printable characters. 7280 7281Fixed some issues with constants in the 64-bit version of the 7282local C library (utclib.c) 7283 7284 72852) Linux 7286 7287EC Driver: No longer attempts to acquire the Global Lock at 7288interrupt level. 7289 7290 72913) iASL Compiler/Disassembler 7292 7293Implemented ACPI 2.0B grammar change that disallows all Type 1 and 72942 opcodes outside of a control method. This means that the 7295"executable" operators (versus the "namespace" operators) cannot 7296be used at the table level; they can only be used within a control 7297method. 7298 7299Implemented the restriction on the Scope() operator where the 7300target must already exist in the namespace at the time the 7301operator is encountered (during ASL compilation). In other words, 7302forward references are not allowed and Scope() cannot create a new 7303object. This makes the iASL compiler compatible with other ACPI 7304implementations and makes the Scope() implementation adhere to the 7305ACPI specification. 7306 7307Fixed a problem where namepath optimization for the Alias operator 7308was optimizing the wrong path (of the two namepaths.) This caused 7309a "Missing alias link" error message. 7310 7311Fixed a problem where an "unknown reserved name" warning could be 7312incorrectly generated for names like "_SB" when the trailing 7313underscore is not used in the original ASL. 7314 7315Fixed a problem where the reserved name check did not handle 7316NamePaths with multiple NameSegs correctly. The first nameseg of 7317the NamePath was examined instead of the last NameSeg. 7318 7319 7320---------------------------------------- 7321 732202 October 2002. Summary of changes for this release. 7323 7324 73251) ACPI CA Core Subsystem version 20021002: 7326 7327Fixed a problem where a store/copy of a string to an existing 7328string did not always set the string length properly in the String 7329object. 7330 7331Fixed a reported problem with the ToString operator where the 7332behavior was identical to the ToHexString operator instead of just 7333simply converting a raw buffer to a string data type. 7334 7335Fixed a problem where CopyObject and the other "explicit" 7336conversion operators were not updating the internal namespace node 7337type as part of the store operation. 7338 7339Fixed a memory leak during implicit source operand conversion 7340where the original object was not deleted if it was converted to a 7341new object of a different type. 7342 7343Enhanced error messages for all problems associated with namespace 7344lookups. Common procedure generates and prints the lookup name as 7345well as the formatted status. 7346 7347Completed implementation of a new design for the Alias support 7348within the namespace. The existing design did not handle the case 7349where a new object was assigned to one of the two names due to the 7350use of an explicit conversion operator, resulting in the two names 7351pointing to two different objects. The new design simply points 7352the Alias name to the original name node - not to the object. 7353This results in a level of indirection that must be handled in the 7354name resolution mechanism. 7355 7356Code and Data Size: Current core subsystem library sizes are shown 7357below. These are the code and data sizes for the acpica.lib 7358produced by the Microsoft Visual C++ 6.0 compiler, and these 7359values do not include any ACPI driver or OSPM code. The debug 7360version of the code includes the debug output trace mechanism and 7361has a larger code and data size. Note that these values will vary 7362depending on the efficiency of the compiler and the compiler 7363options used during generation. 7364 7365 Previous Release 7366 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7367 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7368 Current Release: 7369 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7370 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7371 7372 73732) Linux 7374 7375Initialize thermal driver's timer before it is used. (Knut 7376Neumann) 7377 7378Allow handling negative celsius values. (Kochi Takayoshi) 7379 7380Fix thermal management and make trip points. R/W (Pavel Machek) 7381 7382Fix /proc/acpi/sleep. (P. Christeas) 7383 7384IA64 fixes. (David Mosberger) 7385 7386Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7387 7388Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7389Brodowski) 7390 7391 73923) iASL Compiler/Disassembler 7393 7394Clarified some warning/error messages. 7395 7396 7397---------------------------------------- 739818 September 2002. Summary of changes for this release. 7399 7400 74011) ACPI CA Core Subsystem version 20020918: 7402 7403Fixed a reported problem with reference chaining (via the Index() 7404and RefOf() operators) in the ObjectType() and SizeOf() operators. 7405The definition of these operators includes the dereferencing of 7406all chained references to return information on the base object. 7407 7408Fixed a problem with stores to indexed package elements - the 7409existing code would not complete the store if an "implicit 7410conversion" was not performed. In other words, if the existing 7411object (package element) was to be replaced completely, the code 7412didn't handle this case. 7413 7414Relaxed typechecking on the ASL "Scope" operator to allow the 7415target name to refer to an object of type Integer, String, or 7416Buffer, in addition to the scoping object types (Device, 7417predefined Scopes, Processor, PowerResource, and ThermalZone.) 7418This allows existing AML code that has workarounds for a bug in 7419Windows to function properly. A warning is issued, however. This 7420affects both the AML interpreter and the iASL compiler. Below is 7421an example of this type of ASL code: 7422 7423 Name(DEB,0x00) 7424 Scope(DEB) 7425 { 7426 7427Fixed some reported problems with 64-bit integer support in the 7428local implementation of C library functions (clib.c) 7429 7430 74312) Linux 7432 7433Use ACPI fix map region instead of IOAPIC region, since it is 7434undefined in non-SMP. 7435 7436Ensure that the SCI has the proper polarity and trigger, even on 7437systems that do not have an interrupt override entry in the MADT. 7438 74392.5 big driver reorganization (Pat Mochel) 7440 7441Use early table mapping code from acpitable.c (Andi Kleen) 7442 7443New blacklist entries (Andi Kleen) 7444 7445Blacklist improvements. Split blacklist code out into a separate 7446file. Move checking the blacklist to very early. Previously, we 7447would use ACPI tables, and then halfway through init, check the 7448blacklist -- too late. Now, it's early enough to completely fall- 7449back to non-ACPI. 7450 7451 74523) iASL Compiler/Disassembler version 20020918: 7453 7454Fixed a problem where the typechecking code didn't know that an 7455alias could point to a method. In other words, aliases were not 7456being dereferenced during typechecking. 7457 7458 7459---------------------------------------- 746029 August 2002. Summary of changes for this release. 7461 74621) ACPI CA Core Subsystem Version 20020829: 7463 7464If the target of a Scope() operator already exists, it must be an 7465object type that actually opens a scope -- such as a Device, 7466Method, Scope, etc. This is a fatal runtime error. Similar error 7467check has been added to the iASL compiler also. 7468 7469Tightened up the namespace load to disallow multiple names in the 7470same scope. This previously was allowed if both objects were of 7471the same type. (i.e., a lookup was the same as entering a new 7472name). 7473 7474 74752) Linux 7476 7477Ensure that the ACPI interrupt has the proper trigger and 7478polarity. 7479 7480local_irq_disable is extraneous. (Matthew Wilcox) 7481 7482Make "acpi=off" actually do what it says, and not use the ACPI 7483interpreter *or* the tables. 7484 7485Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7486Takayoshi) 7487 7488 74893) iASL Compiler/Disassembler Version 20020829: 7490 7491Implemented namepath optimization for name declarations. For 7492example, a declaration like "Method (\_SB_.ABCD)" would get 7493optimized to "Method (ABCD)" if the declaration is within the 7494\_SB_ scope. This optimization is in addition to the named 7495reference path optimization first released in the previous 7496version. This would seem to complete all possible optimizations 7497for namepaths within the ASL/AML. 7498 7499If the target of a Scope() operator already exists, it must be an 7500object type that actually opens a scope -- such as a Device, 7501Method, Scope, etc. 7502 7503Implemented a check and warning for unreachable code in the same 7504block below a Return() statement. 7505 7506Fixed a problem where the listing file was not generated if the 7507compiler aborted if the maximum error count was exceeded (200). 7508 7509Fixed a problem where the typechecking of method return values was 7510broken. This includes the check for a return value when the 7511method is invoked as a TermArg (a return value is expected.) 7512 7513Fixed a reported problem where EOF conditions during a quoted 7514string or comment caused a fault. 7515 7516 7517---------------------------------------- 751815 August 2002. Summary of changes for this release. 7519 75201) ACPI CA Core Subsystem Version 20020815: 7521 7522Fixed a reported problem where a Store to a method argument that 7523contains a reference did not perform the indirect store correctly. 7524This problem was created during the conversion to the new 7525reference object model - the indirect store to a method argument 7526code was not updated to reflect the new model. 7527 7528Reworked the ACPI mode change code to better conform to ACPI 2.0, 7529handle corner cases, and improve code legibility (Kochi Takayoshi) 7530 7531Fixed a problem with the pathname parsing for the carat (^) 7532prefix. The heavy use of the carat operator by the new namepath 7533optimization in the iASL compiler uncovered a problem with the AML 7534interpreter handling of this prefix. In the case where one or 7535more carats precede a single nameseg, the nameseg was treated as 7536standalone and the search rule (to root) was inadvertently 7537applied. This could cause both the iASL compiler and the 7538interpreter to find the wrong object or to miss the error that 7539should occur if the object does not exist at that exact pathname. 7540 7541Found and fixed the problem where the HP Pavilion DSDT would not 7542load. This was a relatively minor tweak to the table loading code 7543(a problem caused by the unexpected encounter with a method 7544invocation not within a control method), but it does not solve the 7545overall issue of the execution of AML code at the table level. 7546This investigation is still ongoing. 7547 7548Code and Data Size: Current core subsystem library sizes are shown 7549below. These are the code and data sizes for the acpica.lib 7550produced by the Microsoft Visual C++ 6.0 compiler, and these 7551values do not include any ACPI driver or OSPM code. The debug 7552version of the code includes the debug output trace mechanism and 7553has a larger code and data size. Note that these values will vary 7554depending on the efficiency of the compiler and the compiler 7555options used during generation. 7556 7557 Previous Release 7558 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7559 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7560 Current Release: 7561 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7562 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7563 7564 75652) Linux 7566 7567Remove redundant slab.h include (Brad Hards) 7568 7569Fix several bugs in thermal.c (Herbert Nachtnebel) 7570 7571Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7572 7573Change acpi_system_suspend to use updated irq functions (Pavel 7574Machek) 7575 7576Export acpi_get_firmware_table (Matthew Wilcox) 7577 7578Use proper root proc entry for ACPI (Kochi Takayoshi) 7579 7580Fix early-boot table parsing (Bjorn Helgaas) 7581 7582 75833) iASL Compiler/Disassembler 7584 7585Reworked the compiler options to make them more consistent and to 7586use two-letter options where appropriate. We were running out of 7587sensible letters. This may break some makefiles, so check the 7588current options list by invoking the compiler with no parameters. 7589 7590Completed the design and implementation of the ASL namepath 7591optimization option for the compiler. This option optimizes all 7592references to named objects to the shortest possible path. The 7593first attempt tries to utilize a single nameseg (4 characters) and 7594the "search-to-root" algorithm used by the interpreter. If that 7595cannot be used (because either the name is not in the search path 7596or there is a conflict with another object with the same name), 7597the pathname is optimized using the carat prefix (usually a 7598shorter string than specifying the entire path from the root.) 7599 7600Implemented support to obtain the DSDT from the Windows registry 7601(when the disassembly option is specified with no input file). 7602Added this code as the implementation for AcpiOsTableOverride in 7603the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7604utility) to scan memory for the DSDT to the AcpiOsTableOverride 7605function in the DOS OSL to make the disassembler truly OS 7606independent. 7607 7608Implemented a new option to disassemble and compile in one step. 7609When used without an input filename, this option will grab the 7610DSDT from the local machine, disassemble it, and compile it in one 7611step. 7612 7613Added a warning message for invalid escapes (a backslash followed 7614by any character other than the allowable escapes). This catches 7615the quoted string error "\_SB_" (which should be "\\_SB_" ). 7616 7617Also, there are numerous instances in the ACPI specification where 7618this error occurs. 7619 7620Added a compiler option to disable all optimizations. This is 7621basically the "compatibility mode" because by using this option, 7622the AML code will come out exactly the same as other ASL 7623compilers. 7624 7625Added error messages for incorrectly ordered dependent resource 7626functions. This includes: missing EndDependentFn macro at end of 7627dependent resource list, nested dependent function macros (both 7628start and end), and missing StartDependentFn macro. These are 7629common errors that should be caught at compile time. 7630 7631Implemented _OSI support for the disassembler and compiler. _OSI 7632must be included in the namespace for proper disassembly (because 7633the disassembler must know the number of arguments.) 7634 7635Added an "optimization" message type that is optional (off by 7636default). This message is used for all optimizations - including 7637constant folding, integer optimization, and namepath optimization. 7638 7639---------------------------------------- 764025 July 2002. Summary of changes for this release. 7641 7642 76431) ACPI CA Core Subsystem Version 20020725: 7644 7645The AML Disassembler has been enhanced to produce compilable ASL 7646code and has been integrated into the iASL compiler (see below) as 7647well as the single-step disassembly for the AML debugger and the 7648disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7649resource templates and macros are fully supported. The 7650disassembler has been tested on over 30 different AML files, 7651producing identical AML when the resulting disassembled ASL file 7652is recompiled with the same ASL compiler. 7653 7654Modified the Resource Manager to allow zero interrupts and zero 7655dma channels during the GetCurrentResources call. This was 7656causing problems on some platforms. 7657 7658Added the AcpiOsRedirectOutput interface to the OSL to simplify 7659output redirection for the AcpiOsPrintf and AcpiOsVprintf 7660interfaces. 7661 7662Code and Data Size: Current core subsystem library sizes are shown 7663below. These are the code and data sizes for the acpica.lib 7664produced by the Microsoft Visual C++ 6.0 compiler, and these 7665values do not include any ACPI driver or OSPM code. The debug 7666version of the code includes the debug output trace mechanism and 7667has a larger code and data size. Note that these values will vary 7668depending on the efficiency of the compiler and the compiler 7669options used during generation. 7670 7671 Previous Release 7672 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7673 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7674 Current Release: 7675 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7676 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7677 7678 76792) Linux 7680 7681Fixed a panic in the EC driver (Dominik Brodowski) 7682 7683Implemented checksum of the R/XSDT itself during Linux table scan 7684(Richard Schaal) 7685 7686 76873) iASL compiler 7688 7689The AML disassembler is integrated into the compiler. The "-d" 7690option invokes the disassembler to completely disassemble an 7691input AML file, producing as output a text ASL file with the 7692extension ".dsl" (to avoid name collisions with existing .asl 7693source files.) A future enhancement will allow the disassembler 7694to obtain the BIOS DSDT from the registry under Windows. 7695 7696Fixed a problem with the VendorShort and VendorLong resource 7697descriptors where an invalid AML sequence was created. 7698 7699Implemented a fix for BufferData term in the ASL parser. It was 7700inadvertently defined twice, allowing invalid syntax to pass and 7701causing reduction conflicts. 7702 7703Fixed a problem where the Ones opcode could get converted to a 7704value of zero if "Ones" was used where a byte, word or dword value 7705was expected. The 64-bit value is now truncated to the correct 7706size with the correct value. 7707 7708 7709 7710---------------------------------------- 771102 July 2002. Summary of changes for this release. 7712 7713 77141) ACPI CA Core Subsystem Version 20020702: 7715 7716The Table Manager code has been restructured to add several new 7717features. Tables that are not required by the core subsystem 7718(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7719validated in any way and are returned from AcpiGetFirmwareTable if 7720requested. The AcpiOsTableOverride interface is now called for 7721each table that is loaded by the subsystem in order to allow the 7722host to override any table it chooses. Previously, only the DSDT 7723could be overridden. Added one new files, tbrsdt.c and 7724tbgetall.c. 7725 7726Fixed a problem with the conversion of internal package objects to 7727external objects (when a package is returned from a control 7728method.) The return buffer length was set to zero instead of the 7729proper length of the package object. 7730 7731Fixed a reported problem with the use of the RefOf and DeRefOf 7732operators when passing reference arguments to control methods. A 7733new type of Reference object is used internally for references 7734produced by the RefOf operator. 7735 7736Added additional error messages in the Resource Manager to explain 7737AE_BAD_DATA errors when they occur during resource parsing. 7738 7739Split the AcpiEnableSubsystem into two primitives to enable a 7740finer granularity initialization sequence. These two calls should 7741be called in this order: AcpiEnableSubsystem (flags), 7742AcpiInitializeObjects (flags). The flags parameter remains the 7743same. 7744 7745 77462) Linux 7747 7748Updated the ACPI utilities module to understand the new style of 7749fully resolved package objects that are now returned from the core 7750subsystem. This eliminates errors of the form: 7751 7752 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7753 acpi_utils-0430 [145] acpi_evaluate_reference: 7754 Invalid element in package (not a device reference) 7755 7756The method evaluation utility uses the new buffer allocation 7757scheme instead of calling AcpiEvaluate Object twice. 7758 7759Added support for ECDT. This allows the use of the Embedded 7760 7761Controller before the namespace has been fully initialized, which 7762is necessary for ACPI 2.0 support, and for some laptops to 7763initialize properly. (Laptops using ECDT are still rare, so only 7764limited testing was performed of the added functionality.) 7765 7766Fixed memory leaks in the EC driver. 7767 7768Eliminated a brittle code structure in acpi_bus_init(). 7769 7770Eliminated the acpi_evaluate() helper function in utils.c. It is 7771no longer needed since acpi_evaluate_object can optionally 7772allocate memory for the return object. 7773 7774Implemented fix for keyboard hang when getting battery readings on 7775some systems (Stephen White) 7776 7777PCI IRQ routing update (Dominik Brodowski) 7778 7779Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7780support 7781 7782---------------------------------------- 778311 June 2002. Summary of changes for this release. 7784 7785 77861) ACPI CA Core Subsystem Version 20020611: 7787 7788Fixed a reported problem where constants such as Zero and One 7789appearing within _PRT packages were not handled correctly within 7790the resource manager code. Originally reported against the ASL 7791compiler because the code generator now optimizes integers to 7792their minimal AML representation (i.e. AML constants if possible.) 7793The _PRT code now handles all AML constant opcodes correctly 7794(Zero, One, Ones, Revision). 7795 7796Fixed a problem with the Concatenate operator in the AML 7797interpreter where a buffer result object was incorrectly marked as 7798not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7799 7800All package sub-objects are now fully resolved before they are 7801returned from the external ACPI interfaces. This means that name 7802strings are resolved to object handles, and constant operators 7803(Zero, One, Ones, Revision) are resolved to Integers. 7804 7805Implemented immediate resolution of the AML Constant opcodes 7806(Zero, One, Ones, Revision) to Integer objects upon detection 7807within the AML stream. This has simplified and reduced the 7808generated code size of the subsystem by eliminating about 10 7809switch statements for these constants (which previously were 7810contained in Reference objects.) The complicating issues are that 7811the Zero opcode is used as a "placeholder" for unspecified 7812optional target operands and stores to constants are defined to be 7813no-ops. 7814 7815Code and Data Size: Current core subsystem library sizes are shown 7816below. These are the code and data sizes for the acpica.lib 7817produced by the Microsoft Visual C++ 6.0 compiler, and these 7818values do not include any ACPI driver or OSPM code. The debug 7819version of the code includes the debug output trace mechanism and 7820has a larger code and data size. Note that these values will vary 7821depending on the efficiency of the compiler and the compiler 7822options used during generation. 7823 7824 Previous Release 7825 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7826 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7827 Current Release: 7828 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7829 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7830 7831 78322) Linux 7833 7834 7835Added preliminary support for obtaining _TRA data for PCI root 7836bridges (Bjorn Helgaas). 7837 7838 78393) iASL Compiler Version X2046: 7840 7841Fixed a problem where the "_DDN" reserved name was defined to be a 7842control method with one argument. There are no arguments, and 7843_DDN does not have to be a control method. 7844 7845Fixed a problem with the Linux version of the compiler where the 7846source lines printed with error messages were the wrong lines. 7847This turned out to be the "LF versus CR/LF" difference between 7848Windows and Unix. This appears to be the longstanding issue 7849concerning listing output and error messages. 7850 7851Fixed a problem with the Linux version of compiler where opcode 7852names within error messages were wrong. This was caused by a 7853slight difference in the output of the Flex tool on Linux versus 7854Windows. 7855 7856Fixed a problem with the Linux compiler where the hex output files 7857contained some garbage data caused by an internal buffer overrun. 7858 7859 7860---------------------------------------- 786117 May 2002. Summary of changes for this release. 7862 7863 78641) ACPI CA Core Subsystem Version 20020517: 7865 7866Implemented a workaround to an BIOS bug discovered on the HP 7867OmniBook where the FADT revision number and the table size are 7868inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7869behavior is to fallback to using only the ACPI 1.0 fields of the 7870FADT if the table is too small to be a ACPI 2.0 table as claimed 7871by the revision number. Although this is a BIOS bug, this is a 7872case where the workaround is simple enough and with no side 7873effects, so it seemed prudent to add it. A warning message is 7874issued, however. 7875 7876Implemented minimum size checks for the fixed-length ACPI tables - 7877- the FADT and FACS, as well as consistency checks between the 7878revision number and the table size. 7879 7880Fixed a reported problem in the table override support where the 7881new table pointer was incorrectly treated as a physical address 7882instead of a logical address. 7883 7884Eliminated the use of the AE_AML_ERROR exception and replaced it 7885with more descriptive codes. 7886 7887Fixed a problem where an exception would occur if an ASL Field was 7888defined with no named Field Units underneath it (used by some 7889index fields). 7890 7891Code and Data Size: Current core subsystem library sizes are shown 7892below. These are the code and data sizes for the acpica.lib 7893produced by the Microsoft Visual C++ 6.0 compiler, and these 7894values do not include any ACPI driver or OSPM code. The debug 7895version of the code includes the debug output trace mechanism and 7896has a larger code and data size. Note that these values will vary 7897depending on the efficiency of the compiler and the compiler 7898options used during generation. 7899 7900 Previous Release 7901 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7902 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7903 Current Release: 7904 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7905 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7906 7907 7908 79092) Linux 7910 7911Much work done on ACPI init (MADT and PCI IRQ routing support). 7912(Paul D. and Dominik Brodowski) 7913 7914Fix PCI IRQ-related panic on boot (Sam Revitch) 7915 7916Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7917 7918Fix "MHz" typo (Dominik Brodowski) 7919 7920Fix RTC year 2000 issue (Dominik Brodowski) 7921 7922Preclude multiple button proc entries (Eric Brunet) 7923 7924Moved arch-specific code out of include/platform/aclinux.h 7925 79263) iASL Compiler Version X2044: 7927 7928Implemented error checking for the string used in the EISAID macro 7929(Usually used in the definition of the _HID object.) The code now 7930strictly enforces the PnP format - exactly 7 characters, 3 7931uppercase letters and 4 hex digits. 7932 7933If a raw string is used in the definition of the _HID object 7934(instead of the EISAID macro), the string must contain all 7935alphanumeric characters (e.g., "*PNP0011" is not allowed because 7936of the asterisk.) 7937 7938Implemented checking for invalid use of ACPI reserved names for 7939most of the name creation operators (Name, Device, Event, Mutex, 7940OperationRegion, PowerResource, Processor, and ThermalZone.) 7941Previously, this check was only performed for control methods. 7942 7943Implemented an additional check on the Name operator to emit an 7944error if a reserved name that must be implemented in ASL as a 7945control method is used. We know that a reserved name must be a 7946method if it is defined with input arguments. 7947 7948The warning emitted when a namespace object reference is not found 7949during the cross reference phase has been changed into an error. 7950The "External" directive should be used for names defined in other 7951modules. 7952 7953 79544) Tools and Utilities 7955 7956The 16-bit tools (adump16 and aexec16) have been regenerated and 7957tested. 7958 7959Fixed a problem with the output of both acpidump and adump16 where 7960the indentation of closing parentheses and brackets was not 7961 7962aligned properly with the parent block. 7963 7964 7965---------------------------------------- 796603 May 2002. Summary of changes for this release. 7967 7968 79691) ACPI CA Core Subsystem Version 20020503: 7970 7971Added support a new OSL interface that allows the host operating 7972 7973system software to override the DSDT found in the firmware - 7974AcpiOsTableOverride. With this interface, the OSL can examine the 7975version of the firmware DSDT and replace it with a different one 7976if desired. 7977 7978Added new external interfaces for accessing ACPI registers from 7979device drivers and other system software - AcpiGetRegister and 7980AcpiSetRegister. This was simply an externalization of the 7981existing AcpiHwBitRegister interfaces. 7982 7983Fixed a regression introduced in the previous build where the 7984ASL/AML CreateField operator always returned an error, 7985"destination must be a NS Node". 7986 7987Extended the maximum time (before failure) to successfully enable 7988ACPI mode to 3 seconds. 7989 7990Code and Data Size: Current core subsystem library sizes are shown 7991below. These are the code and data sizes for the acpica.lib 7992produced by the Microsoft Visual C++ 6.0 compiler, and these 7993values do not include any ACPI driver or OSPM code. The debug 7994version of the code includes the debug output trace mechanism and 7995has a larger code and data size. Note that these values will vary 7996depending on the efficiency of the compiler and the compiler 7997options used during generation. 7998 7999 Previous Release 8000 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8001 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8002 Current Release: 8003 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8004 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8005 8006 80072) Linux 8008 8009Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8010free. While 3 out of 4 of our in-house systems work fine, the last 8011one still hangs when testing the LAPIC timer. 8012 8013Renamed many files in 2.5 kernel release to omit "acpi_" from the 8014name. 8015 8016Added warning on boot for Presario 711FR. 8017 8018Sleep improvements (Pavel Machek) 8019 8020ACPI can now be built without CONFIG_PCI enabled. 8021 8022IA64: Fixed memory map functions (JI Lee) 8023 8024 80253) iASL Compiler Version X2043: 8026 8027Added support to allow the compiler to be integrated into the MS 8028VC++ development environment for one-button compilation of single 8029files or entire projects -- with error-to-source-line mapping. 8030 8031Implemented support for compile-time constant folding for the 8032Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8033specification. This allows the ASL writer to use expressions 8034instead of Integer/Buffer/String constants in terms that must 8035evaluate to constants at compile time and will also simplify the 8036emitted AML in any such sub-expressions that can be folded 8037(evaluated at compile-time.) This increases the size of the 8038compiler significantly because a portion of the ACPI CA AML 8039interpreter is included within the compiler in order to pre- 8040evaluate constant expressions. 8041 8042 8043Fixed a problem with the "Unicode" ASL macro that caused the 8044compiler to fault. (This macro is used in conjunction with the 8045_STR reserved name.) 8046 8047Implemented an AML opcode optimization to use the Zero, One, and 8048Ones opcodes where possible to further reduce the size of integer 8049constants and thus reduce the overall size of the generated AML 8050code. 8051 8052Implemented error checking for new reserved terms for ACPI version 80532.0A. 8054 8055Implemented the -qr option to display the current list of ACPI 8056reserved names known to the compiler. 8057 8058Implemented the -qc option to display the current list of ASL 8059operators that are allowed within constant expressions and can 8060therefore be folded at compile time if the operands are constants. 8061 8062 80634) Documentation 8064 8065Updated the Programmer's Reference for new interfaces, data types, 8066and memory allocation model options. 8067 8068Updated the iASL Compiler User Reference to apply new format and 8069add information about new features and options. 8070 8071---------------------------------------- 807219 April 2002. Summary of changes for this release. 8073 80741) ACPI CA Core Subsystem Version 20020419: 8075 8076The source code base for the Core Subsystem has been completely 8077cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8078versions. The Lint option files used are included in the 8079/acpi/generate/lint directory. 8080 8081Implemented enhanced status/error checking across the entire 8082Hardware manager subsystem. Any hardware errors (reported from 8083the OSL) are now bubbled up and will abort a running control 8084method. 8085 8086 8087Fixed a problem where the per-ACPI-table integer width (32 or 64) 8088was stored only with control method nodes, causing a fault when 8089non-control method code was executed during table loading. The 8090solution implemented uses a global variable to indicate table 8091width across the entire ACPI subsystem. Therefore, ACPI CA does 8092not support mixed integer widths across different ACPI tables 8093(DSDT, SSDT). 8094 8095Fixed a problem where NULL extended fields (X fields) in an ACPI 80962.0 ACPI FADT caused the table load to fail. Although the 8097existing ACPI specification is a bit fuzzy on this topic, the new 8098behavior is to fall back on a ACPI 1.0 field if the corresponding 8099ACPI 2.0 X field is zero (even though the table revision indicates 8100a full ACPI 2.0 table.) The ACPI specification will be updated to 8101clarify this issue. 8102 8103Fixed a problem with the SystemMemory operation region handler 8104where memory was always accessed byte-wise even if the AML- 8105specified access width was larger than a byte. This caused 8106problems on systems with memory-mapped I/O. Memory is now 8107accessed with the width specified. On systems that do not support 8108non-aligned transfers, a check is made to guarantee proper address 8109alignment before proceeding in order to avoid an AML-caused 8110alignment fault within the kernel. 8111 8112 8113Fixed a problem with the ExtendedIrq resource where only one byte 8114of the 4-byte Irq field was extracted. 8115 8116Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8117function was out of date and required a rewrite. 8118 8119Code and Data Size: Current core subsystem library sizes are shown 8120below. These are the code and data sizes for the acpica.lib 8121produced by the Microsoft Visual C++ 6.0 compiler, and these 8122values do not include any ACPI driver or OSPM code. The debug 8123version of the code includes the debug output trace mechanism and 8124has a larger code and data size. Note that these values will vary 8125depending on the efficiency of the compiler and the compiler 8126options used during generation. 8127 8128 Previous Release 8129 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8130 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8131 Current 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 8135 81362) Linux 8137 8138PCI IRQ routing fixes (Dominik Brodowski) 8139 8140 81413) iASL Compiler Version X2042: 8142 8143Implemented an additional compile-time error check for a field 8144unit whose size + minimum access width would cause a run-time 8145access beyond the end-of-region. Previously, only the field size 8146itself was checked. 8147 8148The Core subsystem and iASL compiler now share a common parse 8149object in preparation for compile-time evaluation of the type 81503/4/5 ASL operators. 8151 8152 8153---------------------------------------- 8154Summary of changes for this release: 03_29_02 8155 81561) ACPI CA Core Subsystem Version 20020329: 8157 8158Implemented support for late evaluation of TermArg operands to 8159Buffer and Package objects. This allows complex expressions to be 8160used in the declarations of these object types. 8161 8162Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 81631.0, if the field was larger than 32 bits, it was returned as a 8164buffer - otherwise it was returned as an integer. In ACPI 2.0, 8165the field is returned as a buffer only if the field is larger than 816664 bits. The TableRevision is now considered when making this 8167conversion to avoid incompatibility with existing ASL code. 8168 8169Implemented logical addressing for AcpiOsGetRootPointer. This 8170allows an RSDP with either a logical or physical address. With 8171this support, the host OS can now override all ACPI tables with 8172one logical RSDP. Includes implementation of "typed" pointer 8173support to allow a common data type for both physical and logical 8174pointers internally. This required a change to the 8175AcpiOsGetRootPointer interface. 8176 8177Implemented the use of ACPI 2.0 Generic Address Structures for all 8178GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8179mapped I/O for these ACPI features. 8180 8181Initialization now ignores not only non-required tables (All 8182tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8183not validate the table headers of unrecognized tables. 8184 8185Fixed a problem where a notify handler could only be 8186installed/removed on an object of type Device. All "notify" 8187 8188objects are now supported -- Devices, Processor, Power, and 8189Thermal. 8190 8191Removed most verbosity from the ACPI_DB_INFO debug level. Only 8192critical information is returned when this debug level is enabled. 8193 8194Code and Data Size: Current core subsystem library sizes are shown 8195below. These are the code and data sizes for the acpica.lib 8196produced by the Microsoft Visual C++ 6.0 compiler, and these 8197values do not include any ACPI driver or OSPM code. The debug 8198version of the code includes the debug output trace mechanism and 8199has a larger code and data size. Note that these values will vary 8200depending on the efficiency of the compiler and the compiler 8201options used during generation. 8202 8203 Previous Release 8204 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8205 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8206 Current Release: 8207 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8208 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8209 8210 82112) Linux: 8212 8213The processor driver (acpi_processor.c) now fully supports ACPI 82142.0-based processor performance control (e.g. Intel(R) 8215SpeedStep(TM) technology) Note that older laptops that only have 8216the Intel "applet" interface are not supported through this. The 8217'limit' and 'performance' interface (/proc) are fully functional. 8218[Note that basic policy for controlling performance state 8219transitions will be included in the next version of ospmd.] The 8220idle handler was modified to more aggressively use C2, and PIIX4 8221errata handling underwent a complete overhaul (big thanks to 8222Dominik Brodowski). 8223 8224Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8225based devices in the ACPI namespace are now dynamically bound 8226(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8227This allows, among other things, ACPI to resolve bus numbers for 8228subordinate PCI bridges. 8229 8230Enhanced PCI IRQ routing to get the proper bus number for _PRT 8231entries defined underneath PCI bridges. 8232 8233Added IBM 600E to bad bios list due to invalid _ADR value for 8234PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8235 8236In the process of adding full MADT support (e.g. IOAPIC) for IA32 8237(acpi.c, mpparse.c) -- stay tuned. 8238 8239Added back visual differentiation between fixed-feature and 8240control-method buttons in dmesg. Buttons are also subtyped (e.g. 8241button/power/PWRF) to simplify button identification. 8242 8243We no longer use -Wno-unused when compiling debug. Please ignore 8244any "_THIS_MODULE defined but not used" messages. 8245 8246Can now shut down the system using "magic sysrq" key. 8247 8248 82493) iASL Compiler version 2041: 8250 8251Fixed a problem where conversion errors for hex/octal/decimal 8252constants were not reported. 8253 8254Implemented a fix for the General Register template Address field. 8255This field was 8 bits when it should be 64. 8256 8257Fixed a problem where errors/warnings were no longer being emitted 8258within the listing output file. 8259 8260Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8261exactly 4 characters, alphanumeric only. 8262 8263 8264 8265 8266---------------------------------------- 8267Summary of changes for this release: 03_08_02 8268 8269 82701) ACPI CA Core Subsystem Version 20020308: 8271 8272Fixed a problem with AML Fields where the use of the "AccessAny" 8273keyword could cause an interpreter error due to attempting to read 8274or write beyond the end of the parent Operation Region. 8275 8276Fixed a problem in the SystemMemory Operation Region handler where 8277an attempt was made to map memory beyond the end of the region. 8278This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8279errors on some Linux systems. 8280 8281Fixed a problem where the interpreter/namespace "search to root" 8282algorithm was not functioning for some object types. Relaxed the 8283internal restriction on the search to allow upsearches for all 8284external object types as well as most internal types. 8285 8286 82872) Linux: 8288 8289We now use safe_halt() macro versus individual calls to sti | hlt. 8290 8291Writing to the processor limit interface should now work. "echo 1" 8292will increase the limit, 2 will decrease, and 0 will reset to the 8293 8294default. 8295 8296 82973) ASL compiler: 8298 8299Fixed segfault on Linux version. 8300 8301 8302---------------------------------------- 8303Summary of changes for this release: 02_25_02 8304 83051) ACPI CA Core Subsystem: 8306 8307 8308Fixed a problem where the GPE bit masks were not initialized 8309properly, causing erratic GPE behavior. 8310 8311Implemented limited support for multiple calling conventions. The 8312code can be generated with either the VPL (variable parameter 8313list, or "C") convention, or the FPL (fixed parameter list, or 8314"Pascal") convention. The core subsystem is about 3.4% smaller 8315when generated with FPL. 8316 8317 83182) Linux 8319 8320Re-add some /proc/acpi/event functionality that was lost during 8321the rewrite 8322 8323Resolved issue with /proc events for fixed-feature buttons showing 8324up as the system device. 8325 8326Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8327 8328Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8329 8330Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8331 8332Fixed limit interface & usage to fix bugs with passive cooling 8333hysterisis. 8334 8335Restructured PRT support. 8336 8337 8338---------------------------------------- 8339Summary of changes for this label: 02_14_02 8340 8341 83421) ACPI CA Core Subsystem: 8343 8344Implemented support in AcpiLoadTable to allow loading of FACS and 8345FADT tables. 8346 8347Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8348been removed. All 64-bit platforms should be migrated to the ACPI 83492.0 tables. The actbl71.h header has been removed from the source 8350tree. 8351 8352All C macros defined within the subsystem have been prefixed with 8353"ACPI_" to avoid collision with other system include files. 8354 8355Removed the return value for the two AcpiOsPrint interfaces, since 8356it is never used and causes lint warnings for ignoring the return 8357value. 8358 8359Added error checking to all internal mutex acquire and release 8360calls. Although a failure from one of these interfaces is 8361probably a fatal system error, these checks will cause the 8362immediate abort of the currently executing method or interface. 8363 8364Fixed a problem where the AcpiSetCurrentResources interface could 8365fault. This was a side effect of the deployment of the new memory 8366allocation model. 8367 8368Fixed a couple of problems with the Global Lock support introduced 8369in the last major build. The "common" (1.0/2.0) internal FACS was 8370being overwritten with the FACS signature and clobbering the 8371Global Lock pointer. Also, the actual firmware FACS was being 8372unmapped after construction of the "common" FACS, preventing 8373access to the actual Global Lock field within it. The "common" 8374internal FACS is no longer installed as an actual ACPI table; it 8375is used simply as a global. 8376 8377Code and Data Size: Current core subsystem library sizes are shown 8378below. These are the code and data sizes for the acpica.lib 8379produced by the Microsoft Visual C++ 6.0 compiler, and these 8380values do not include any ACPI driver or OSPM code. The debug 8381version of the code includes the debug output trace mechanism and 8382has a larger code and data size. Note that these values will vary 8383depending on the efficiency of the compiler and the compiler 8384options used during generation. 8385 8386 Previous Release (02_07_01) 8387 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8388 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8389 Current Release: 8390 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8391 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8392 8393 83942) Linux 8395 8396Updated Linux-specific code for core macro and OSL interface 8397changes described above. 8398 8399Improved /proc/acpi/event. It now can be opened only once and has 8400proper poll functionality. 8401 8402Fixed and restructured power management (acpi_bus). 8403 8404Only create /proc "view by type" when devices of that class exist. 8405 8406Fixed "charging/discharging" bug (and others) in acpi_battery. 8407 8408Improved thermal zone code. 8409 8410 84113) ASL Compiler, version X2039: 8412 8413 8414Implemented the new compiler restriction on ASL String hex/octal 8415escapes to non-null, ASCII values. An error results if an invalid 8416value is used. (This will require an ACPI 2.0 specification 8417change.) 8418 8419AML object labels that are output to the optional C and ASM source 8420are now prefixed with both the ACPI table signature and table ID 8421to help guarantee uniqueness within a large BIOS project. 8422 8423 8424---------------------------------------- 8425Summary of changes for this label: 02_01_02 8426 84271) ACPI CA Core Subsystem: 8428 8429ACPI 2.0 support is complete in the entire Core Subsystem and the 8430ASL compiler. All new ACPI 2.0 operators are implemented and all 8431other changes for ACPI 2.0 support are complete. With 8432simultaneous code and data optimizations throughout the subsystem, 8433ACPI 2.0 support has been implemented with almost no additional 8434cost in terms of code and data size. 8435 8436Implemented a new mechanism for allocation of return buffers. If 8437the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8438be allocated on behalf of the caller. Consolidated all return 8439buffer validation and allocation to a common procedure. Return 8440buffers will be allocated via the primary OSL allocation interface 8441since it appears that a separate pool is not needed by most users. 8442If a separate pool is required for these buffers, the caller can 8443still use the original mechanism and pre-allocate the buffer(s). 8444 8445Implemented support for string operands within the DerefOf 8446operator. 8447 8448Restructured the Hardware and Event managers to be table driven, 8449simplifying the source code and reducing the amount of generated 8450code. 8451 8452Split the common read/write low-level ACPI register bitfield 8453procedure into a separate read and write, simplifying the code 8454considerably. 8455 8456Obsoleted the AcpiOsCallocate OSL interface. This interface was 8457used only a handful of times and didn't have enough critical mass 8458for a separate interface. Replaced with a common calloc procedure 8459in the core. 8460 8461Fixed a reported problem with the GPE number mapping mechanism 8462that allows GPE1 numbers to be non-contiguous with GPE0. 8463Reorganized the GPE information and shrunk a large array that was 8464originally large enough to hold info for all possible GPEs (256) 8465to simply large enough to hold all GPEs up to the largest GPE 8466number on the machine. 8467 8468Fixed a reported problem with resource structure alignment on 64- 8469bit platforms. 8470 8471Changed the AcpiEnableEvent and AcpiDisableEvent external 8472interfaces to not require any flags for the common case of 8473enabling/disabling a GPE. 8474 8475Implemented support to allow a "Notify" on a Processor object. 8476 8477Most TBDs in comments within the source code have been resolved 8478and eliminated. 8479 8480 8481Fixed a problem in the interpreter where a standalone parent 8482prefix (^) was not handled correctly in the interpreter and 8483debugger. 8484 8485Removed obsolete and unnecessary GPE save/restore code. 8486 8487Implemented Field support in the ASL Load operator. This allows a 8488table to be loaded from a named field, in addition to loading a 8489table directly from an Operation Region. 8490 8491Implemented timeout and handle support in the external Global Lock 8492interfaces. 8493 8494Fixed a problem in the AcpiDump utility where pathnames were no 8495longer being generated correctly during the dump of named objects. 8496 8497Modified the AML debugger to give a full display of if/while 8498predicates instead of just one AML opcode at a time. (The 8499predicate can have several nested ASL statements.) The old method 8500was confusing during single stepping. 8501 8502Code and Data Size: Current core subsystem library sizes are shown 8503below. These are the code and data sizes for the acpica.lib 8504produced by the Microsoft Visual C++ 6.0 compiler, and these 8505values do not include any ACPI driver or OSPM code. The debug 8506version of the code includes the debug output trace mechanism and 8507has a larger code and data size. Note that these values will vary 8508depending on the efficiency of the compiler and the compiler 8509options used during generation. 8510 8511 Previous Release (12_18_01) 8512 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8513 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8514 Current Release: 8515 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8516 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8517 85182) Linux 8519 8520 Implemented fix for PIIX reverse throttling errata (Processor 8521driver) 8522 8523Added new Limit interface (Processor and Thermal drivers) 8524 8525New thermal policy (Thermal driver) 8526 8527Many updates to /proc 8528 8529Battery "low" event support (Battery driver) 8530 8531Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8532 8533IA32 - IA64 initialization unification, no longer experimental 8534 8535Menuconfig options redesigned 8536 85373) ASL Compiler, version X2037: 8538 8539Implemented several new output features to simplify integration of 8540AML code into firmware: 1) Output the AML in C source code with 8541labels for each named ASL object. The original ASL source code 8542is interleaved as C comments. 2) Output the AML in ASM source code 8543with labels and interleaved ASL source. 3) Output the AML in 8544raw hex table form, in either C or ASM. 8545 8546Implemented support for optional string parameters to the 8547LoadTable operator. 8548 8549Completed support for embedded escape sequences within string 8550literals. The compiler now supports all single character escapes 8551as well as the Octal and Hex escapes. Note: the insertion of a 8552null byte into a string literal (via the hex/octal escape) causes 8553the string to be immediately terminated. A warning is issued. 8554 8555Fixed a problem where incorrect AML was generated for the case 8556where an ASL namepath consists of a single parent prefix ( 8557 8558) with no trailing name segments. 8559 8560The compiler has been successfully generated with a 64-bit C 8561compiler. 8562 8563 8564 8565 8566---------------------------------------- 8567Summary of changes for this label: 12_18_01 8568 85691) Linux 8570 8571Enhanced blacklist with reason and severity fields. Any table's 8572signature may now be used to identify a blacklisted system. 8573 8574Call _PIC control method to inform the firmware which interrupt 8575model the OS is using. Turn on any disabled link devices. 8576 8577Cleaned up busmgr /proc error handling (Andreas Dilger) 8578 8579 2) ACPI CA Core Subsystem: 8580 8581Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8582while loop) 8583 8584Completed implementation of the ACPI 2.0 "Continue", 8585"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8586operators. All new ACPI 2.0 operators are now implemented in both 8587the ASL compiler and the AML interpreter. The only remaining ACPI 85882.0 task is support for the String data type in the DerefOf 8589operator. Fixed a problem with AcquireMutex where the status code 8590was lost if the caller had to actually wait for the mutex. 8591 8592Increased the maximum ASL Field size from 64K bits to 4G bits. 8593 8594Completed implementation of the external Global Lock interfaces -- 8595AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8596Handler parameters were added. 8597 8598Completed another pass at removing warnings and issues when 8599compiling with 64-bit compilers. The code now compiles cleanly 8600with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8601add and subtract (diff) macros have changed considerably. 8602 8603 8604Created and deployed a new ACPI_SIZE type that is 64-bits wide on 860564-bit platforms, 32-bits on all others. This type is used 8606wherever memory allocation and/or the C sizeof() operator is used, 8607and affects the OSL memory allocation interfaces AcpiOsAllocate 8608and AcpiOsCallocate. 8609 8610Implemented sticky user breakpoints in the AML debugger. 8611 8612Code and Data Size: Current core subsystem library sizes are shown 8613below. These are the code and data sizes for the acpica.lib 8614produced by the Microsoft Visual C++ 6.0 compiler, and these 8615values do not include any ACPI driver or OSPM code. The debug 8616version of the code includes the debug output trace mechanism and 8617has a larger code and data size. Note that these values will vary 8618depending on the efficiency of the compiler and the compiler 8619options used during generation. 8620 8621 Previous Release (12_05_01) 8622 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8623 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8624 Current Release: 8625 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8626 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8627 8628 3) ASL Compiler, version X2034: 8629 8630Now checks for (and generates an error if detected) the use of a 8631Break or Continue statement without an enclosing While statement. 8632 8633 8634Successfully generated the compiler with the Intel 64-bit C 8635compiler. 8636 8637 ---------------------------------------- 8638Summary of changes for this label: 12_05_01 8639 8640 1) ACPI CA Core Subsystem: 8641 8642The ACPI 2.0 CopyObject operator is fully implemented. This 8643operator creates a new copy of an object (and is also used to 8644bypass the "implicit conversion" mechanism of the Store operator.) 8645 8646The ACPI 2.0 semantics for the SizeOf operator are fully 8647implemented. The change is that performing a SizeOf on a 8648reference object causes an automatic dereference of the object to 8649tha actual value before the size is evaluated. This behavior was 8650undefined in ACPI 1.0. 8651 8652The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8653have been implemented. The interrupt polarity and mode are now 8654independently set. 8655 8656Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8657appearing in Package objects were not properly converted to 8658integers when the internal Package was converted to an external 8659object (via the AcpiEvaluateObject interface.) 8660 8661Fixed a problem with the namespace object deletion mechanism for 8662objects created by control methods. There were two parts to this 8663problem: 1) Objects created during the initialization phase method 8664parse were not being deleted, and 2) The object owner ID mechanism 8665to track objects was broken. 8666 8667Fixed a problem where the use of the ASL Scope operator within a 8668control method would result in an invalid opcode exception. 8669 8670Fixed a problem introduced in the previous label where the buffer 8671length required for the _PRT structure was not being returned 8672correctly. 8673 8674Code and Data Size: Current core subsystem library sizes are shown 8675below. These are the code and data sizes for the acpica.lib 8676produced by the Microsoft Visual C++ 6.0 compiler, and these 8677values do not include any ACPI driver or OSPM code. The debug 8678version of the code includes the debug output trace mechanism and 8679has a larger code and data size. Note that these values will vary 8680depending on the efficiency of the compiler and the compiler 8681options used during generation. 8682 8683 Previous Release (11_20_01) 8684 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8685 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8686 8687 Current Release: 8688 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8689 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8690 8691 2) Linux: 8692 8693Updated all files to apply cleanly against 2.4.16. 8694 8695Added basic PCI Interrupt Routing Table (PRT) support for IA32 8696(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8697version supports both static and dyanmic PRT entries, but dynamic 8698entries are treated as if they were static (not yet 8699reconfigurable). Architecture- specific code to use this data is 8700absent on IA32 but should be available shortly. 8701 8702Changed the initialization sequence to start the ACPI interpreter 8703(acpi_init) prior to initialization of the PCI driver (pci_init) 8704in init/main.c. This ordering is required to support PRT and 8705facilitate other (future) enhancement. A side effect is that the 8706ACPI bus driver and certain device drivers can no longer be loaded 8707as modules. 8708 8709Modified the 'make menuconfig' options to allow PCI Interrupt 8710Routing support to be included without the ACPI Bus and other 8711device drivers. 8712 8713 3) ASL Compiler, version X2033: 8714 8715Fixed some issues with the use of the new CopyObject and 8716DataTableRegion operators. Both are fully functional. 8717 8718 ---------------------------------------- 8719Summary of changes for this label: 11_20_01 8720 8721 20 November 2001. Summary of changes for this release. 8722 8723 1) ACPI CA Core Subsystem: 8724 8725Updated Index support to match ACPI 2.0 semantics. Storing a 8726Integer, String, or Buffer to an Index of a Buffer will store only 8727the least-significant byte of the source to the Indexed buffer 8728byte. Multiple writes are not performed. 8729 8730Fixed a problem where the access type used in an AccessAs ASL 8731operator was not recorded correctly into the field object. 8732 8733Fixed a problem where ASL Event objects were created in a 8734signalled state. Events are now created in an unsignalled state. 8735 8736The internal object cache is now purged after table loading and 8737initialization to reduce the use of dynamic kernel memory -- on 8738the assumption that object use is greatest during the parse phase 8739of the entire table (versus the run-time use of individual control 8740methods.) 8741 8742ACPI 2.0 variable-length packages are now fully operational. 8743 8744Code and Data Size: Code and Data optimizations have permitted new 8745feature development with an actual reduction in the library size. 8746Current core subsystem library sizes are shown below. These are 8747the code and data sizes for the acpica.lib produced by the 8748Microsoft Visual C++ 6.0 compiler, and these values do not include 8749any ACPI driver or OSPM code. The debug version of the code 8750includes the debug output trace mechanism and has a larger code 8751and data size. Note that these values will vary depending on the 8752efficiency of the compiler and the compiler options used during 8753generation. 8754 8755 Previous Release (11_09_01): 8756 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8757 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8758 8759 Current Release: 8760 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8761 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8762 8763 2) Linux: 8764 8765Enhanced the ACPI boot-time initialization code to allow the use 8766of Local APIC tables for processor enumeration on IA-32, and to 8767pave the way for a fully MPS-free boot (on SMP systems) in the 8768near future. This functionality replaces 8769arch/i386/kernel/acpitables.c, which was introduced in an earlier 87702.4.15-preX release. To enable this feature you must add 8771"acpi_boot=on" to the kernel command line -- see the help entry 8772for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8773the works... 8774 8775Restructured the configuration options to allow boot-time table 8776parsing support without inclusion of the ACPI Interpreter (and 8777other) code. 8778 8779NOTE: This release does not include fixes for the reported events, 8780power-down, and thermal passive cooling issues (coming soon). 8781 8782 3) ASL Compiler: 8783 8784Added additional typechecking for Fields within restricted access 8785Operation Regions. All fields within EC and CMOS regions must be 8786declared with ByteAcc. All fields withing SMBus regions must be 8787declared with the BufferAcc access type. 8788 8789Fixed a problem where the listing file output of control methods 8790no longer interleaved the actual AML code with the ASL source 8791code. 8792 8793 8794 8795 8796---------------------------------------- 8797Summary of changes for this label: 11_09_01 8798 87991) ACPI CA Core Subsystem: 8800 8801Implemented ACPI 2.0-defined support for writes to fields with a 8802Buffer, String, or Integer source operand that is smaller than the 8803target field. In these cases, the source operand is zero-extended 8804to fill the target field. 8805 8806Fixed a problem where a Field starting bit offset (within the 8807parent operation region) was calculated incorrectly if the 8808 8809alignment of the field differed from the access width. This 8810affected CreateWordField, CreateDwordField, CreateQwordField, and 8811possibly other fields that use the "AccessAny" keyword. 8812 8813Fixed a problem introduced in the 11_02_01 release where indirect 8814stores through method arguments did not operate correctly. 8815 88162) Linux: 8817 8818Implemented boot-time ACPI table parsing support 8819(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8820facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8821legacy BIOS interfaces (e.g. MPS) for the configuration of system 8822processors, memory, and interrupts during setup_arch(). Note that 8823this patch does not include the required architecture-specific 8824changes required to apply this information -- subsequent patches 8825will be posted for both IA32 and IA64 to achieve this. 8826 8827Added low-level sleep support for IA32 platforms, courtesy of Pat 8828Mochel. This allows IA32 systems to transition to/from various 8829sleeping states (e.g. S1, S3), although the lack of a centralized 8830driver model and power-manageable drivers will prevent its 8831(successful) use on most systems. 8832 8833Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8834submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8835tables" option, etc. 8836 8837Increased the default timeout for the EC driver from 1ms to 10ms 8838(1000 cycles of 10us) to try to address AE_TIME errors during EC 8839transactions. 8840 8841 ---------------------------------------- 8842Summary of changes for this label: 11_02_01 8843 88441) ACPI CA Core Subsystem: 8845 8846ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8847(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8848implemented. 8849 8850OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8851changes to support ACPI 2.0 Qword field access. Read/Write 8852PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8853accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8854the value parameter for the address space handler interface is now 8855an ACPI_INTEGER. OSL implementations of these interfaces must now 8856handle the case where the Width parameter is 64. 8857 8858Index Fields: Fixed a problem where unaligned bit assembly and 8859disassembly for IndexFields was not supported correctly. 8860 8861Index and Bank Fields: Nested Index and Bank Fields are now 8862supported. During field access, a check is performed to ensure 8863that the value written to an Index or Bank register is not out of 8864the range of the register. The Index (or Bank) register is 8865written before each access to the field data. Future support will 8866include allowing individual IndexFields to be wider than the 8867DataRegister width. 8868 8869Fields: Fixed a problem where the AML interpreter was incorrectly 8870attempting to write beyond the end of a Field/OpRegion. This was 8871a boundary case that occurred when a DWORD field was written to a 8872BYTE access OpRegion, forcing multiple writes and causing the 8873interpreter to write one datum too many. 8874 8875Fields: Fixed a problem with Field/OpRegion access where the 8876starting bit address of a field was incorrectly calculated if the 8877current access type was wider than a byte (WordAcc, DwordAcc, or 8878QwordAcc). 8879 8880Fields: Fixed a problem where forward references to individual 8881FieldUnits (individual Field names within a Field definition) were 8882not resolved during the AML table load. 8883 8884Fields: Fixed a problem where forward references from a Field 8885definition to the parent Operation Region definition were not 8886resolved during the AML table load. 8887 8888Fields: Duplicate FieldUnit names within a scope are now detected 8889during AML table load. 8890 8891Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8892returned an incorrect name for the root node. 8893 8894Code and Data Size: Code and Data optimizations have permitted new 8895feature development with an actual reduction in the library size. 8896Current core subsystem library sizes are shown below. These are 8897the code and data sizes for the acpica.lib produced by the 8898Microsoft Visual C++ 6.0 compiler, and these values do not include 8899any ACPI driver or OSPM code. The debug version of the code 8900includes the debug output trace mechanism and has a larger code 8901and data size. Note that these values will vary depending on the 8902efficiency of the compiler and the compiler options used during 8903generation. 8904 8905 Previous Release (10_18_01): 8906 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8907 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8908 8909 Current Release: 8910 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8911 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8912 8913 2) Linux: 8914 8915Improved /proc processor output (Pavel Machek) Re-added 8916MODULE_LICENSE("GPL") to all modules. 8917 8918 3) ASL Compiler version X2030: 8919 8920Duplicate FieldUnit names within a scope are now detected and 8921flagged as errors. 8922 8923 4) Documentation: 8924 8925Programmer Reference updated to reflect OSL and address space 8926handler interface changes described above. 8927 8928---------------------------------------- 8929Summary of changes for this label: 10_18_01 8930 8931ACPI CA Core Subsystem: 8932 8933Fixed a problem with the internal object reference count mechanism 8934that occasionally caused premature object deletion. This resolves 8935all of the outstanding problem reports where an object is deleted 8936in the middle of an interpreter evaluation. Although this problem 8937only showed up in rather obscure cases, the solution to the 8938problem involved an adjustment of all reference counts involving 8939objects attached to namespace nodes. 8940 8941Fixed a problem with Field support in the interpreter where 8942writing to an aligned field whose length is an exact multiple (2 8943or greater) of the field access granularity would cause an attempt 8944to write beyond the end of the field. 8945 8946The top level AML opcode execution functions within the 8947interpreter have been renamed with a more meaningful and 8948consistent naming convention. The modules exmonad.c and 8949exdyadic.c were eliminated. New modules are exoparg1.c, 8950exoparg2.c, exoparg3.c, and exoparg6.c. 8951 8952Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8953 8954Fixed a problem where the AML debugger was causing some internal 8955objects to not be deleted during subsystem termination. 8956 8957Fixed a problem with the external AcpiEvaluateObject interface 8958where the subsystem would fault if the named object to be 8959evaluated refered to a constant such as Zero, Ones, etc. 8960 8961Fixed a problem with IndexFields and BankFields where the 8962subsystem would fault if the index, data, or bank registers were 8963not defined in the same scope as the field itself. 8964 8965Added printf format string checking for compilers that support 8966this feature. Corrected more than 50 instances of issues with 8967format specifiers within invocations of ACPI_DEBUG_PRINT 8968throughout the core subsystem code. 8969 8970The ASL "Revision" operator now returns the ACPI support level 8971implemented in the core - the value "2" since the ACPI 2.0 support 8972is more than 50% implemented. 8973 8974Enhanced the output of the AML debugger "dump namespace" command 8975to output in a more human-readable form. 8976 8977Current core subsystem library code sizes are shown below. These 8978 8979are the code and data sizes for the acpica.lib produced by the 8980Microsoft Visual C++ 6.0 compiler, and these values do not include 8981any ACPI driver or OSPM code. The debug version of the code 8982includes the full debug trace mechanism -- leading to a much 8983 8984larger code and data size. Note that these values will vary 8985depending on the efficiency of the compiler and the compiler 8986options used during generation. 8987 8988 Previous Label (09_20_01): 8989 Non-Debug Version: 65K Code, 5K Data, 70K Total 8990 Debug Version: 138K Code, 58K Data, 196K Total 8991 8992 This Label: 8993 8994 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8995 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8996 8997Linux: 8998 8999Implemented a "Bad BIOS Blacklist" to track machines that have 9000known ASL/AML problems. 9001 9002Enhanced the /proc interface for the thermal zone driver and added 9003support for _HOT (the critical suspend trip point). The 'info' 9004file now includes threshold/policy information, and allows setting 9005of _SCP (cooling preference) and _TZP (polling frequency) values 9006to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9007frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9008preference to the passive/quiet mode (if supported by the ASL). 9009 9010Implemented a workaround for a gcc bug that resuted in an OOPs 9011when loading the control method battery driver. 9012 9013 ---------------------------------------- 9014Summary of changes for this label: 09_20_01 9015 9016 ACPI CA Core Subsystem: 9017 9018The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9019modified to allow individual GPE levels to be flagged as wake- 9020enabled (i.e., these GPEs are to remain enabled when the platform 9021sleeps.) 9022 9023The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9024support wake-enabled GPEs. This means that upon entering the 9025sleep state, all GPEs that are not wake-enabled are disabled. 9026When leaving the sleep state, these GPEs are reenabled. 9027 9028A local double-precision divide/modulo module has been added to 9029enhance portability to OS kernels where a 64-bit math library is 9030not available. The new module is "utmath.c". 9031 9032Several optimizations have been made to reduce the use of CPU 9033stack. Originally over 2K, the maximum stack usage is now below 90342K at 1860 bytes (1.82k) 9035 9036Fixed a problem with the AcpiGetFirmwareTable interface where the 9037root table pointer was not mapped into a logical address properly. 9038 9039Fixed a problem where a NULL pointer was being dereferenced in the 9040interpreter code for the ASL Notify operator. 9041 9042Fixed a problem where the use of the ASL Revision operator 9043returned an error. This operator now returns the current version 9044of the ACPI CA core subsystem. 9045 9046Fixed a problem where objects passed as control method parameters 9047to AcpiEvaluateObject were always deleted at method termination. 9048However, these objects may end up being stored into the namespace 9049by the called method. The object reference count mechanism was 9050applied to these objects instead of a force delete. 9051 9052Fixed a problem where static strings or buffers (contained in the 9053AML code) that are declared as package elements within the ASL 9054code could cause a fault because the interpreter would attempt to 9055delete them. These objects are now marked with the "static 9056object" flag to prevent any attempt to delete them. 9057 9058Implemented an interpreter optimization to use operands directly 9059from the state object instead of extracting the operands to local 9060variables. This reduces stack use and code size, and improves 9061performance. 9062 9063The module exxface.c was eliminated as it was an unnecessary extra 9064layer of code. 9065 9066Current core subsystem library code sizes are shown below. These 9067are the code and data sizes for the acpica.lib produced by the 9068Microsoft Visual C++ 6.0 compiler, and these values do not include 9069any ACPI driver or OSPM code. The debug version of the code 9070includes the full debug trace mechanism -- leading to a much 9071larger code and data size. Note that these values will vary 9072depending on the efficiency of the compiler and the compiler 9073options used during generation. 9074 9075 Non-Debug Version: 65K Code, 5K Data, 70K Total 9076(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9077Total (Previously 195K) 9078 9079Linux: 9080 9081Support for ACPI 2.0 64-bit integers has been added. All ACPI 9082Integer objects are now 64 bits wide 9083 9084All Acpi data types and structures are now in lower case. Only 9085Acpi macros are upper case for differentiation. 9086 9087 Documentation: 9088 9089Changes to the external interfaces as described above. 9090 9091 ---------------------------------------- 9092Summary of changes for this label: 08_31_01 9093 9094 ACPI CA Core Subsystem: 9095 9096A bug with interpreter implementation of the ASL Divide operator 9097was found and fixed. The implicit function return value (not the 9098explicit store operands) was returning the remainder instead of 9099the quotient. This was a longstanding bug and it fixes several 9100known outstanding issues on various platforms. 9101 9102The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9103been further optimized for size. There are 700 invocations of the 9104DEBUG_PRINT macro alone, so each optimization reduces the size of 9105the debug version of the subsystem significantly. 9106 9107A stack trace mechanism has been implemented. The maximum stack 9108usage is about 2K on 32-bit platforms. The debugger command "stat 9109stack" will display the current maximum stack usage. 9110 9111All public symbols and global variables within the subsystem are 9112now prefixed with the string "Acpi". This keeps all of the 9113symbols grouped together in a kernel map, and avoids conflicts 9114with other kernel subsystems. 9115 9116Most of the internal fixed lookup tables have been moved into the 9117code segment via the const operator. 9118 9119Several enhancements have been made to the interpreter to both 9120reduce the code size and improve performance. 9121 9122Current core subsystem library code sizes are shown below. These 9123are the code and data sizes for the acpica.lib produced by the 9124Microsoft Visual C++ 6.0 compiler, and these values do not include 9125any ACPI driver or OSPM code. The debug version of the code 9126includes the full debug trace mechanism which contains over 700 9127invocations of the DEBUG_PRINT macro, 500 function entry macro 9128invocations, and over 900 function exit macro invocations -- 9129leading to a much larger code and data size. Note that these 9130values will vary depending on the efficiency of the compiler and 9131the compiler options used during generation. 9132 9133 Non-Debug Version: 64K Code, 5K Data, 69K Total 9134Debug Version: 137K Code, 58K Data, 195K Total 9135 9136 Linux: 9137 9138Implemented wbinvd() macro, pending a kernel-wide definition. 9139 9140Fixed /proc/acpi/event to handle poll() and short reads. 9141 9142 ASL Compiler, version X2026: 9143 9144Fixed a problem introduced in the previous label where the AML 9145 9146code emitted for package objects produced packages with zero 9147length. 9148 9149 ---------------------------------------- 9150Summary of changes for this label: 08_16_01 9151 9152ACPI CA Core Subsystem: 9153 9154The following ACPI 2.0 ASL operators have been implemented in the 9155AML interpreter (These are already supported by the Intel ASL 9156compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9157ToBuffer. Support for 64-bit AML constants is implemented in the 9158AML parser, debugger, and disassembler. 9159 9160The internal memory tracking mechanism (leak detection code) has 9161been upgraded to reduce the memory overhead (a separate tracking 9162block is no longer allocated for each memory allocation), and now 9163supports all of the internal object caches. 9164 9165The data structures and code for the internal object caches have 9166been coelesced and optimized so that there is a single cache and 9167memory list data structure and a single group of functions that 9168implement generic cache management. This has reduced the code 9169size in both the debug and release versions of the subsystem. 9170 9171The DEBUG_PRINT macro(s) have been optimized for size and replaced 9172by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9173different, because it generates a single call to an internal 9174function. This results in a savings of about 90 bytes per 9175invocation, resulting in an overall code and data savings of about 917616% in the debug version of the subsystem. 9177 9178 Linux: 9179 9180Fixed C3 disk corruption problems and re-enabled C3 on supporting 9181machines. 9182 9183Integrated low-level sleep code by Patrick Mochel. 9184 9185Further tweaked source code Linuxization. 9186 9187Other minor fixes. 9188 9189 ASL Compiler: 9190 9191Support for ACPI 2.0 variable length packages is fixed/completed. 9192 9193Fixed a problem where the optional length parameter for the ACPI 91942.0 ToString operator. 9195 9196Fixed multiple extraneous error messages when a syntax error is 9197detected within the declaration line of a control method. 9198 9199 ---------------------------------------- 9200Summary of changes for this label: 07_17_01 9201 9202ACPI CA Core Subsystem: 9203 9204Added a new interface named AcpiGetFirmwareTable to obtain any 9205ACPI table via the ACPI signature. The interface can be called at 9206any time during kernel initialization, even before the kernel 9207virtual memory manager is initialized and paging is enabled. This 9208allows kernel subsystems to obtain ACPI tables very early, even 9209before the ACPI CA subsystem is initialized. 9210 9211Fixed a problem where Fields defined with the AnyAcc attribute 9212could be resolved to the incorrect address under the following 9213conditions: 1) the field width is larger than 8 bits and 2) the 9214parent operation region is not defined on a DWORD boundary. 9215 9216Fixed a problem where the interpreter is not being locked during 9217namespace initialization (during execution of the _INI control 9218methods), causing an error when an attempt is made to release it 9219later. 9220 9221ACPI 2.0 support in the AML Interpreter has begun and will be 9222ongoing throughout the rest of this year. In this label, The Mod 9223operator is implemented. 9224 9225Added a new data type to contain full PCI addresses named 9226ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9227and Function values. 9228 9229 Linux: 9230 9231Enhanced the Linux version of the source code to change most 9232capitalized ACPI type names to lowercase. For example, all 9233instances of ACPI_STATUS are changed to acpi_status. This will 9234result in a large diff, but the change is strictly cosmetic and 9235aligns the CA code closer to the Linux coding standard. 9236 9237OSL Interfaces: 9238 9239The interfaces to the PCI configuration space have been changed to 9240add the PCI Segment number and to split the single 32-bit combined 9241DeviceFunction field into two 16-bit fields. This was 9242accomplished by moving the four values that define an address in 9243PCI configuration space (segment, bus, device, and function) to 9244the new ACPI_PCI_ID structure. 9245 9246The changes to the PCI configuration space interfaces led to a 9247reexamination of the complete set of address space access 9248interfaces for PCI, I/O, and Memory. The previously existing 18 9249interfaces have proven difficult to maintain (any small change 9250must be propagated across at least 6 interfaces) and do not easily 9251allow for future expansion to 64 bits if necessary. Also, on some 9252systems, it would not be appropriate to demultiplex the access 9253width (8, 16, 32,or 64) before calling the OSL if the 9254corresponding native OS interfaces contain a similar access width 9255parameter. For these reasons, the 18 address space interfaces 9256have been replaced by these 6 new ones: 9257 9258AcpiOsReadPciConfiguration 9259AcpiOsWritePciConfiguration 9260AcpiOsReadMemory 9261AcpiOsWriteMemory 9262AcpiOsReadPort 9263AcpiOsWritePort 9264 9265Added a new interface named AcpiOsGetRootPointer to allow the OSL 9266to perform the platform and/or OS-specific actions necessary to 9267obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9268interface will simply call down to the CA core to perform the low- 9269memory search for the table. On IA-64, the RSDP is obtained from 9270EFI. Migrating this interface to the OSL allows the CA core to 9271 9272remain OS and platform independent. 9273 9274Added a new interface named AcpiOsSignal to provide a generic 9275"function code and pointer" interface for various miscellaneous 9276signals and notifications that must be made to the host OS. The 9277first such signals are intended to support the ASL Fatal and 9278Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9279interface has been obsoleted. 9280 9281The definition of the AcpiFormatException interface has been 9282changed to simplify its use. The caller no longer must supply a 9283buffer to the call; A pointer to a const string is now returned 9284directly. This allows the call to be easily used in printf 9285statements, etc. since the caller does not have to manage a local 9286buffer. 9287 9288 9289 ASL Compiler, Version X2025: 9290 9291The ACPI 2.0 Switch/Case/Default operators have been implemented 9292and are fully functional. They will work with all ACPI 1.0 9293interpreters, since the operators are simply translated to If/Else 9294pairs. 9295 9296The ACPI 2.0 ElseIf operator is implemented and will also work 9297with 1.0 interpreters, for the same reason. 9298 9299Implemented support for ACPI 2.0 variable-length packages. These 9300packages have a separate opcode, and their size is determined by 9301the interpreter at run-time. 9302 9303Documentation The ACPI CA Programmer Reference has been updated to 9304reflect the new interfaces and changes to existing interfaces. 9305 9306 ------------------------------------------ 9307Summary of changes for this label: 06_15_01 9308 9309 ACPI CA Core Subsystem: 9310 9311Fixed a problem where a DWORD-accessed field within a Buffer 9312object would get its byte address inadvertently rounded down to 9313the nearest DWORD. Buffers are always Byte-accessible. 9314 9315 ASL Compiler, version X2024: 9316 9317Fixed a problem where the Switch() operator would either fault or 9318hang the compiler. Note however, that the AML code for this ACPI 93192.0 operator is not yet implemented. 9320 9321Compiler uses the new AcpiOsGetTimer interface to obtain compile 9322timings. 9323 9324Implementation of the CreateField operator automatically converts 9325a reference to a named field within a resource descriptor from a 9326byte offset to a bit offset if required. 9327 9328Added some missing named fields from the resource descriptor 9329support. These are the names that are automatically created by the 9330compiler to reference fields within a descriptor. They are only 9331valid at compile time and are not passed through to the AML 9332interpreter. 9333 9334Resource descriptor named fields are now typed as Integers and 9335subject to compile-time typechecking when used in expressions. 9336 9337 ------------------------------------------ 9338Summary of changes for this label: 05_18_01 9339 9340 ACPI CA Core Subsystem: 9341 9342Fixed a couple of problems in the Field support code where bits 9343from adjacent fields could be returned along with the proper field 9344bits. Restructured the field support code to improve performance, 9345readability and maintainability. 9346 9347New DEBUG_PRINTP macro automatically inserts the procedure name 9348into the output, saving hundreds of copies of procedure name 9349strings within the source, shrinking the memory footprint of the 9350debug version of the core subsystem. 9351 9352 Source Code Structure: 9353 9354The source code directory tree was restructured to reflect the 9355current organization of the component architecture. Some files 9356and directories have been moved and/or renamed. 9357 9358 Linux: 9359 9360Fixed leaking kacpidpc processes. 9361 9362Fixed queueing event data even when /proc/acpi/event is not 9363opened. 9364 9365 ASL Compiler, version X2020: 9366 9367Memory allocation performance enhancement - over 24X compile time 9368improvement on large ASL files. Parse nodes and namestring 9369buffers are now allocated from a large internal compiler buffer. 9370 9371The temporary .SRC file is deleted unless the "-s" option is 9372specified 9373 9374The "-d" debug output option now sends all output to the .DBG file 9375instead of the console. 9376 9377"External" second parameter is now optional 9378 9379"ElseIf" syntax now properly allows the predicate 9380 9381Last operand to "Load" now recognized as a Target operand 9382 9383Debug object can now be used anywhere as a normal object. 9384 9385ResourceTemplate now returns an object of type BUFFER 9386 9387EISAID now returns an object of type INTEGER 9388 9389"Index" now works with a STRING operand 9390 9391"LoadTable" now accepts optional parameters 9392 9393"ToString" length parameter is now optional 9394 9395"Interrupt (ResourceType," parse error fixed. 9396 9397"Register" with a user-defined region space parse error fixed 9398 9399Escaped backslash at the end of a string ("\\") scan/parse error 9400fixed 9401 9402"Revision" is now an object of type INTEGER. 9403 9404 9405 9406------------------------------------------ 9407Summary of changes for this label: 05_02_01 9408 9409Linux: 9410 9411/proc/acpi/event now blocks properly. 9412 9413Removed /proc/sys/acpi. You can still dump your DSDT from 9414/proc/acpi/dsdt. 9415 9416 ACPI CA Core Subsystem: 9417 9418Fixed a problem introduced in the previous label where some of the 9419"small" resource descriptor types were not recognized. 9420 9421Improved error messages for the case where an ASL Field is outside 9422the range of the parent operation region. 9423 9424 ASL Compiler, version X2018: 9425 9426 9427Added error detection for ASL Fields that extend beyond the length 9428of the parent operation region (only if the length of the region 9429is known at compile time.) This includes fields that have a 9430minimum access width that is smaller than the parent region, and 9431individual field units that are partially or entirely beyond the 9432extent of the parent. 9433 9434 9435 9436------------------------------------------ 9437Summary of changes for this label: 04_27_01 9438 9439 ACPI CA Core Subsystem: 9440 9441Fixed a problem where the namespace mutex could be released at the 9442wrong time during execution of AcpiRemoveAddressSpaceHandler. 9443 9444Added optional thread ID output for debug traces, to simplify 9445debugging of multiple threads. Added context switch notification 9446when the debug code realizes that a different thread is now 9447executing ACPI code. 9448 9449Some additional external data types have been prefixed with the 9450string "ACPI_" for consistency. This may effect existing code. 9451The data types affected are the external callback typedefs - e.g., 9452 9453WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9454 9455 Linux: 9456 9457Fixed an issue with the OSL semaphore implementation where a 9458thread was waking up with an error from receiving a SIGCHLD 9459signal. 9460 9461Linux version of ACPI CA now uses the system C library for string 9462manipulation routines instead of a local implementation. 9463 9464Cleaned up comments and removed TBDs. 9465 9466 ASL Compiler, version X2017: 9467 9468Enhanced error detection and reporting for all file I/O 9469operations. 9470 9471 Documentation: 9472 9473Programmer Reference updated to version 1.06. 9474 9475 9476 9477------------------------------------------ 9478Summary of changes for this label: 04_13_01 9479 9480 ACPI CA Core Subsystem: 9481 9482Restructured support for BufferFields and RegionFields. 9483BankFields support is now fully operational. All known 32-bit 9484limitations on field sizes have been removed. Both BufferFields 9485and (Operation) RegionFields are now supported by the same field 9486management code. 9487 9488Resource support now supports QWORD address and IO resources. The 948916/32/64 bit address structures and the Extended IRQ structure 9490have been changed to properly handle Source Resource strings. 9491 9492A ThreadId of -1 is now used to indicate a "mutex not acquired" 9493condition internally and must never be returned by AcpiOsThreadId. 9494This reserved value was changed from 0 since Unix systems allow a 9495thread ID of 0. 9496 9497Linux: 9498 9499Driver code reorganized to enhance portability 9500 9501Added a kernel configuration option to control ACPI_DEBUG 9502 9503Fixed the EC driver to honor _GLK. 9504 9505ASL Compiler, version X2016: 9506 9507Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9508address space was set to 0, not 0x7f as it should be. 9509 9510 ------------------------------------------ 9511Summary of changes for this label: 03_13_01 9512 9513 ACPI CA Core Subsystem: 9514 9515During ACPI initialization, the _SB_._INI method is now run if 9516present. 9517 9518Notify handler fix - notifies are deferred until the parent method 9519completes execution. This fixes the "mutex already acquired" 9520issue seen occasionally. 9521 9522Part of the "implicit conversion" rules in ACPI 2.0 have been 9523found to cause compatibility problems with existing ASL/AML. The 9524convert "result-to-target-type" implementation has been removed 9525for stores to method Args and Locals. Source operand conversion 9526is still fully implemented. Possible changes to ACPI 2.0 9527specification pending. 9528 9529Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9530length. 9531 9532Fix for compiler warnings for 64-bit compiles. 9533 9534 Linux: 9535 9536/proc output aligned for easier parsing. 9537 9538Release-version compile problem fixed. 9539 9540New kernel configuration options documented in Configure.help. 9541 9542IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9543context" message. 9544 9545 OSPM: 9546 9547Power resource driver integrated with bus manager. 9548 9549Fixed kernel fault during active cooling for thermal zones. 9550 9551Source Code: 9552 9553The source code tree has been restructured. 9554 9555 9556 9557------------------------------------------ 9558Summary of changes for this label: 03_02_01 9559 9560 Linux OS Services Layer (OSL): 9561 9562Major revision of all Linux-specific code. 9563 9564Modularized all ACPI-specific drivers. 9565 9566Added new thermal zone and power resource drivers. 9567 9568Revamped /proc interface (new functionality is under /proc/acpi). 9569 9570New kernel configuration options. 9571 9572 Linux known issues: 9573 9574New kernel configuration options not documented in Configure.help 9575yet. 9576 9577 9578Module dependencies not currently implemented. If used, they 9579should be loaded in this order: busmgr, power, ec, system, 9580processor, battery, ac_adapter, button, thermal. 9581 9582Modules will not load if CONFIG_MODVERSION is set. 9583 9584IBM 600E - entering S5 may reboot instead of shutting down. 9585 9586IBM 600E - Sleep button may generate "Invalid <NULL> context" 9587message. 9588 9589Some systems may fail with "execution mutex already acquired" 9590message. 9591 9592 ACPI CA Core Subsystem: 9593 9594Added a new OSL Interface, AcpiOsGetThreadId. This was required 9595for the deadlock detection code. Defined to return a non-zero, 32- 9596bit thread ID for the currently executing thread. May be a non- 9597zero constant integer on single-thread systems. 9598 9599Implemented deadlock detection for internal subsystem mutexes. We 9600may add conditional compilation for this code (debug only) later. 9601 9602ASL/AML Mutex object semantics are now fully supported. This 9603includes multiple acquires/releases by owner and support for the 9604 9605Mutex SyncLevel parameter. 9606 9607A new "Force Release" mechanism automatically frees all ASL 9608Mutexes that have been acquired but not released when a thread 9609exits the interpreter. This forces conformance to the ACPI spec 9610("All mutexes must be released when an invocation exits") and 9611prevents deadlocked ASL threads. This mechanism can be expanded 9612(later) to monitor other resource acquisitions if OEM ASL code 9613continues to misbehave (which it will). 9614 9615Several new ACPI exception codes have been added for the Mutex 9616support. 9617 9618Recursive method calls are now allowed and supported (the ACPI 9619spec does in fact allow recursive method calls.) The number of 9620recursive calls is subject to the restrictions imposed by the 9621SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9622parameter. 9623 9624Implemented support for the SyncLevel parameter for control 9625methods (ACPI 2.0 feature) 9626 9627Fixed a deadlock problem when multiple threads attempted to use 9628the interpreter. 9629 9630Fixed a problem where the string length of a String package 9631element was not always set in a package returned from 9632AcpiEvaluateObject. 9633 9634Fixed a problem where the length of a String package element was 9635not always included in the length of the overall package returned 9636from AcpiEvaluateObject. 9637 9638Added external interfaces (Acpi*) to the ACPI debug memory 9639manager. This manager keeps a list of all outstanding 9640allocations, and can therefore detect memory leaks and attempts to 9641free memory blocks more than once. Useful for code such as the 9642power manager, etc. May not be appropriate for device drivers. 9643Performance with the debug code enabled is slow. 9644 9645The ACPI Global Lock is now an optional hardware element. 9646 9647 ASL Compiler Version X2015: 9648 9649Integrated changes to allow the compiler to be generated on 9650multiple platforms. 9651 9652Linux makefile added to generate the compiler on Linux 9653 9654 Source Code: 9655 9656All platform-specific headers have been moved to their own 9657subdirectory, Include/Platform. 9658 9659New source file added, Interpreter/ammutex.c 9660 9661New header file, Include/acstruct.h 9662 9663 Documentation: 9664 9665The programmer reference has been updated for the following new 9666interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9667 9668 ------------------------------------------ 9669Summary of changes for this label: 02_08_01 9670 9671Core ACPI CA Subsystem: Fixed a problem where an error was 9672incorrectly returned if the return resource buffer was larger than 9673the actual data (in the resource interfaces). 9674 9675References to named objects within packages are resolved to the 9676 9677full pathname string before packages are returned directly (via 9678the AcpiEvaluateObject interface) or indirectly via the resource 9679interfaces. 9680 9681Linux OS Services Layer (OSL): 9682 9683Improved /proc battery interface. 9684 9685 9686Added C-state debugging output and other miscellaneous fixes. 9687 9688ASL Compiler Version X2014: 9689 9690All defined method arguments can now be used as local variables, 9691including the ones that are not actually passed in as parameters. 9692The compiler tracks initialization of the arguments and issues an 9693exception if they are used without prior assignment (just like 9694locals). 9695 9696The -o option now specifies a filename prefix that is used for all 9697output files, including the AML output file. Otherwise, the 9698default behavior is as follows: 1) the AML goes to the file 9699specified in the DSDT. 2) all other output files use the input 9700source filename as the base. 9701 9702 ------------------------------------------ 9703Summary of changes for this label: 01_25_01 9704 9705Core ACPI CA Subsystem: Restructured the implementation of object 9706store support within the interpreter. This includes support for 9707the Store operator as well as any ASL operators that include a 9708target operand. 9709 9710Partially implemented support for Implicit Result-to-Target 9711conversion. This is when a result object is converted on the fly 9712to the type of an existing target object. Completion of this 9713support is pending further analysis of the ACPI specification 9714concerning this matter. 9715 9716CPU-specific code has been removed from the subsystem (hardware 9717directory). 9718 9719New Power Management Timer functions added 9720 9721Linux OS Services Layer (OSL): Moved system state transition code 9722to the core, fixed it, and modified Linux OSL accordingly. 9723 9724Fixed C2 and C3 latency calculations. 9725 9726 9727We no longer use the compilation date for the version message on 9728initialization, but retrieve the version from AcpiGetSystemInfo(). 9729 9730Incorporated for fix Sony VAIO machines. 9731 9732Documentation: The Programmer Reference has been updated and 9733reformatted. 9734 9735 9736ASL Compiler: Version X2013: Fixed a problem where the line 9737numbering and error reporting could get out of sync in the 9738presence of multiple include files. 9739 9740 ------------------------------------------ 9741Summary of changes for this label: 01_15_01 9742 9743Core ACPI CA Subsystem: 9744 9745Implemented support for type conversions in the execution of the 9746ASL Concatenate operator (The second operand is converted to 9747match the type of the first operand before concatenation.) 9748 9749Support for implicit source operand conversion is partially 9750implemented. The ASL source operand types Integer, Buffer, and 9751String are freely interchangeable for most ASL operators and are 9752converted by the interpreter on the fly as required. Implicit 9753Target operand conversion (where the result is converted to the 9754target type before storing) is not yet implemented. 9755 9756Support for 32-bit and 64-bit BCD integers is implemented. 9757 9758Problem fixed where a field read on an aligned field could cause a 9759read past the end of the field. 9760 9761New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9762does not return a value, but the caller expects one. (The ASL 9763compiler flags this as a warning.) 9764 9765ASL Compiler: 9766 9767Version X2011: 97681. Static typechecking of all operands is implemented. This 9769prevents the use of invalid objects (such as using a Package where 9770an Integer is required) at compile time instead of at interpreter 9771run-time. 97722. The ASL source line is printed with ALL errors and warnings. 97733. Bug fix for source EOF without final linefeed. 97744. Debug option is split into a parse trace and a namespace trace. 97755. Namespace output option (-n) includes initial values for 9776integers and strings. 97776. Parse-only option added for quick syntax checking. 97787. Compiler checks for duplicate ACPI name declarations 9779 9780Version X2012: 97811. Relaxed typechecking to allow interchangeability between 9782strings, integers, and buffers. These types are now converted by 9783the interpreter at runtime. 97842. Compiler reports time taken by each internal subsystem in the 9785debug output file. 9786 9787 9788 ------------------------------------------ 9789Summary of changes for this label: 12_14_00 9790 9791ASL Compiler: 9792 9793This is the first official release of the compiler. Since the 9794compiler requires elements of the Core Subsystem, this label 9795synchronizes everything. 9796 9797------------------------------------------ 9798Summary of changes for this label: 12_08_00 9799 9800 9801Fixed a problem where named references within the ASL definition 9802of both OperationRegions and CreateXXXFields did not work 9803properly. The symptom was an AE_AML_OPERAND_TYPE during 9804initialization of the region/field. This is similar (but not 9805related internally) to the problem that was fixed in the last 9806label. 9807 9808Implemented both 32-bit and 64-bit support for the BCD ASL 9809functions ToBCD and FromBCD. 9810 9811Updated all legal headers to include "2000" in the copyright 9812years. 9813 9814 ------------------------------------------ 9815Summary of changes for this label: 12_01_00 9816 9817Fixed a problem where method invocations within the ASL definition 9818of both OperationRegions and CreateXXXFields did not work 9819properly. The symptom was an AE_AML_OPERAND_TYPE during 9820initialization of the region/field: 9821 9822 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9823[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9824(0x3005) 9825 9826Fixed a problem where operators with more than one nested 9827subexpression would fail. The symptoms were varied, by mostly 9828AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9829problem that has gone unnoticed until now. 9830 9831 Subtract (Add (1,2), Multiply (3,4)) 9832 9833Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9834previous build (The prefix part of a relative path was handled 9835incorrectly). 9836 9837Fixed a problem where Operation Region initialization failed if 9838the operation region name was a "namepath" instead of a simple 9839"nameseg". Symptom was an AE_NO_OPERAND error. 9840 9841Fixed a problem where an assignment to a local variable via the 9842indirect RefOf mechanism only worked for the first such 9843assignment. Subsequent assignments were ignored. 9844 9845 ------------------------------------------ 9846Summary of changes for this label: 11_15_00 9847 9848ACPI 2.0 table support with backwards support for ACPI 1.0 and the 98490.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9850the AML interpreter does NOT have support for the new 2.0 ASL 9851grammar terms at this time. 9852 9853All ACPI hardware access is via the GAS structures in the ACPI 2.0 9854FADT. 9855 9856All physical memory addresses across all platforms are now 64 bits 9857wide. Logical address width remains dependent on the platform 9858(i.e., "void *"). 9859 9860AcpiOsMapMemory interface changed to a 64-bit physical address. 9861 9862The AML interpreter integer size is now 64 bits, as per the ACPI 98632.0 specification. 9864 9865For backwards compatibility with ACPI 1.0, ACPI tables with a 9866revision number less than 2 use 32-bit integers only. 9867 9868Fixed a problem where the evaluation of OpRegion operands did not 9869always resolve them to numbers properly. 9870 9871------------------------------------------ 9872Summary of changes for this label: 10_20_00 9873 9874Fix for CBN_._STA issue. This fix will allow correct access to 9875CBN_ OpRegions when the _STA returns 0x8. 9876 9877Support to convert ACPI constants (Ones, Zeros, One) to actual 9878values before a package object is returned 9879 9880Fix for method call as predicate to if/while construct causing 9881incorrect if/while behavior 9882 9883Fix for Else block package lengths sometimes calculated wrong (if 9884block > 63 bytes) 9885 9886Fix for Processor object length field, was always zero 9887 9888Table load abort if FACP sanity check fails 9889 9890Fix for problem with Scope(name) if name already exists 9891 9892Warning emitted if a named object referenced cannot be found 9893(resolved) during method execution. 9894 9895 9896 9897 9898 9899------------------------------------------ 9900Summary of changes for this label: 9_29_00 9901 9902New table initialization interfaces: AcpiInitializeSubsystem no 9903longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9904necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9905>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9906AcpiLoadTables 9907 9908Note: These interface changes require changes to all existing OSDs 9909 9910The PCI_Config default address space handler is always installed 9911at the root namespace object. 9912 9913------------------------------------------- 9914Summary of changes for this label: 09_15_00 9915 9916The new initialization architecture is implemented. New 9917interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9918AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9919 9920(Namespace is automatically loaded when a table is loaded) 9921 9922The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 992352 bytes to 32 bytes. There is usually one of these for every 9924namespace object, so the memory savings is significant. 9925 9926Implemented just-in-time evaluation of the CreateField operators. 9927 9928Bug fixes for IA-64 support have been integrated. 9929 9930Additional code review comments have been implemented 9931 9932The so-called "third pass parse" has been replaced by a final walk 9933through the namespace to initialize all operation regions (address 9934spaces) and fields that have not yet been initialized during the 9935execution of the various _INI and REG methods. 9936 9937New file - namespace/nsinit.c 9938 9939------------------------------------------- 9940Summary of changes for this label: 09_01_00 9941 9942Namespace manager data structures have been reworked to change the 9943primary object from a table to a single object. This has 9944resulted in dynamic memory savings of 3X within the namespace and 99452X overall in the ACPI CA subsystem. 9946 9947Fixed problem where the call to AcpiEvFindPciRootBuses was 9948inadvertently left commented out. 9949 9950Reduced the warning count when generating the source with the GCC 9951compiler. 9952 9953Revision numbers added to each module header showing the 9954SourceSafe version of the file. Please refer to this version 9955number when giving us feedback or comments on individual modules. 9956 9957The main object types within the subsystem have been renamed to 9958clarify their purpose: 9959 9960ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9961ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9962ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9963 9964NOTE: no changes to the initialization sequence are included in 9965this label. 9966 9967------------------------------------------- 9968Summary of changes for this label: 08_23_00 9969 9970Fixed problem where TerminateControlMethod was being called 9971multiple times per method 9972 9973Fixed debugger problem where single stepping caused a semaphore to 9974be oversignalled 9975 9976Improved performance through additional parse object caching - 9977added ACPI_EXTENDED_OP type 9978 9979------------------------------------------- 9980Summary of changes for this label: 08_10_00 9981 9982Parser/Interpreter integration: Eliminated the creation of 9983complete parse trees for ACPI tables and control methods. 9984Instead, parse subtrees are created and then deleted as soon as 9985they are processed (Either entered into the namespace or executed 9986by the interpreter). This reduces the use of dynamic kernel 9987memory significantly. (about 10X) 9988 9989Exception codes broken into classes and renumbered. Be sure to 9990recompile all code that includes acexcep.h. Hopefully we won't 9991have to renumber the codes again now that they are split into 9992classes (environment, programmer, AML code, ACPI table, and 9993internal). 9994 9995Fixed some additional alignment issues in the Resource Manager 9996subcomponent 9997 9998Implemented semaphore tracking in the AcpiExec utility, and fixed 9999several places where mutexes/semaphores were being unlocked 10000without a corresponding lock operation. There are no known 10001semaphore or mutex "leaks" at this time. 10002 10003Fixed the case where an ASL Return operator is used to return an 10004unnamed package. 10005 10006------------------------------------------- 10007Summary of changes for this label: 07_28_00 10008 10009Fixed a problem with the way addresses were calculated in 10010AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10011manifested itself when a Field was created with WordAccess or 10012DwordAccess, but the field unit defined within the Field was less 10013 10014than a Word or Dword. 10015 10016Fixed a problem in AmlDumpOperands() module's loop to pull 10017operands off of the operand stack to display information. The 10018problem manifested itself as a TLB error on 64-bit systems when 10019accessing an operand stack with two or more operands. 10020 10021Fixed a problem with the PCI configuration space handlers where 10022context was getting confused between accesses. This required a 10023change to the generic address space handler and address space 10024setup definitions. Handlers now get both a global handler context 10025(this is the one passed in by the user when executing 10026AcpiInstallAddressSpaceHandler() and a specific region context 10027that is unique to each region (For example, the _ADR, _SEG and 10028_BBN values associated with a specific region). The generic 10029function definitions have changed to the following: 10030 10031typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10032UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10033*HandlerContext, // This used to be void *Context void 10034*RegionContext); // This is an additional parameter 10035 10036typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10037RegionHandle, UINT32 Function, void *HandlerContext, void 10038**RegionContext); // This used to be **ReturnContext 10039 10040------------------------------------------- 10041Summary of changes for this label: 07_21_00 10042 10043Major file consolidation and rename. All files within the 10044interpreter have been renamed as well as most header files. This 10045was done to prevent collisions with existing files in the host 10046OSs -- filenames such as "config.h" and "global.h" seem to be 10047quite common. The VC project files have been updated. All 10048makefiles will require modification. 10049 10050The parser/interpreter integration continues in Phase 5 with the 10051implementation of a complete 2-pass parse (the AML is parsed 10052twice) for each table; This avoids the construction of a huge 10053parse tree and therefore reduces the amount of dynamic memory 10054required by the subsystem. Greater use of the parse object cache 10055means that performance is unaffected. 10056 10057Many comments from the two code reviews have been rolled in. 10058 10059The 64-bit alignment support is complete. 10060 10061------------------------------------------- 10062Summary of changes for this label: 06_30_00 10063 10064With a nod and a tip of the hat to the technology of yesteryear, 10065we've added support in the source code for 80 column output 10066devices. The code is now mostly constrained to 80 columns or 10067less to support environments and editors that 1) cannot display 10068or print more than 80 characters on a single line, and 2) cannot 10069disable line wrapping. 10070 10071A major restructuring of the namespace data structure has been 10072completed. The result is 1) cleaner and more 10073understandable/maintainable code, and 2) a significant reduction 10074in the dynamic memory requirement for each named ACPI object 10075(almost half). 10076 10077------------------------------------------- 10078Summary of changes for this label: 06_23_00 10079 10080Linux support has been added. In order to obtain approval to get 10081the ACPI CA subsystem into the Linux kernel, we've had to make 10082quite a few changes to the base subsystem that will affect all 10083users (all the changes are generic and OS- independent). The 10084effects of these global changes have been somewhat far reaching. 10085Files have been merged and/or renamed and interfaces have been 10086renamed. The major changes are described below. 10087 10088Osd* interfaces renamed to AcpiOs* to eliminate namespace 10089pollution/confusion within our target kernels. All OSD 10090interfaces must be modified to match the new naming convention. 10091 10092Files merged across the subsystem. A number of the smaller source 10093and header files have been merged to reduce the file count and 10094increase the density of the existing files. There are too many 10095to list here. In general, makefiles that call out individual 10096files will require rebuilding. 10097 10098Interpreter files renamed. All interpreter files now have the 10099prefix am* instead of ie* and is*. 10100 10101Header files renamed: The acapi.h file is now acpixf.h. The 10102acpiosd.h file is now acpiosxf.h. We are removing references to 10103the acronym "API" since it is somewhat windowsy. The new name is 10104"external interface" or xface or xf in the filenames.j 10105 10106 10107All manifest constants have been forced to upper case (some were 10108mixed case.) Also, the string "ACPI_" has been prepended to many 10109(not all) of the constants, typedefs, and structs. 10110 10111The globals "DebugLevel" and "DebugLayer" have been renamed 10112"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10113 10114All other globals within the subsystem are now prefixed with 10115"AcpiGbl_" Internal procedures within the subsystem are now 10116prefixed with "Acpi" (with only a few exceptions). The original 10117two-letter abbreviation for the subcomponent remains after "Acpi" 10118- for example, CmCallocate became AcpiCmCallocate. 10119 10120Added a source code translation/conversion utility. Used to 10121generate the Linux source code, it can be modified to generate 10122other types of source as well. Can also be used to cleanup 10123existing source by removing extraneous spaces and blank lines. 10124Found in tools/acpisrc/* 10125 10126OsdUnMapMemory was renamed to OsdUnmapMemory and then 10127AcpiOsUnmapMemory. (UnMap became Unmap). 10128 10129A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10130When set to one, this indicates that the caller wants to use the 10131 10132semaphore as a mutex, not a counting semaphore. ACPI CA uses 10133both types. However, implementers of this call may want to use 10134different OS primitives depending on the type of semaphore 10135requested. For example, some operating systems provide separate 10136 10137"mutex" and "semaphore" interfaces - where the mutex interface is 10138much faster because it doesn't have all the overhead of a full 10139semaphore implementation. 10140 10141Fixed a deadlock problem where a method that accesses the PCI 10142address space can block forever if it is the first access to the 10143space. 10144 10145------------------------------------------- 10146Summary of changes for this label: 06_02_00 10147 10148Support for environments that cannot handle unaligned data 10149accesses (e.g. firmware and OS environments devoid of alignment 10150handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10151been added (via configurable macros) in these three areas: - 10152Transfer of data from the raw AML byte stream is done via byte 10153moves instead of word/dword/qword moves. - External objects are 10154aligned within the user buffer, including package elements (sub- 10155objects). - Conversion of name strings to UINT32 Acpi Names is now 10156done byte-wise. 10157 10158The Store operator was modified to mimic Microsoft's 10159implementation when storing to a Buffer Field. 10160 10161Added a check of the BM_STS bit before entering C3. 10162 10163The methods subdirectory has been obsoleted and removed. A new 10164file, cmeval.c subsumes the functionality. 10165 10166A 16-bit (DOS) version of AcpiExec has been developed. The 10167makefile is under the acpiexec directory. 10168