1---------------------------------------- 213 October 2010. Summary of changes for version 20101013: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now 9clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via 10HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880. 11 12Changed the type of the predefined namespace object _TZ from ThermalZone to 13Device. This was found to be confusing to the host software that processes 14the various thermal zones, since _TZ is not really a ThermalZone. However, a 15Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui 16Zhang. 17 18Added Windows Vista SP2 to the list of supported _OSI strings. The actual 19string is "Windows 2006 SP2". 20 21Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair 22code automatically repairs _HID-related strings, this type of code is no 23longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878. 24 25Example Code and Data Size: These are the sizes for the OS-independent 26acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 27debug version of the code includes the debug output trace mechanism and has a 28much larger code and data size. 29 30 Previous Release: 31 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 32 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 33 Current Release: 34 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 35 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 36 372) iASL Compiler/Disassembler and Tools: 38 39iASL: Implemented additional compile-time validation for _HID strings. The 40non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of 41the string must be exactly seven or eight characters. For both _HID and _CID 42strings, all characters must be alphanumeric. ACPICA BZ 874. 43 44iASL: Allow certain "null" resource descriptors. Some BIOS code creates 45descriptors that are mostly or all zeros, with the expectation that they will 46be filled in at runtime. iASL now allows this as long as there is a "resource 47tag" (name) associated with the descriptor, which gives the ASL a handle 48needed to modify the descriptor. ACPICA BZ 873. 49 50Added single-thread support to the generic Unix application OSL. Primarily 51for iASL support, this change removes the use of semaphores in the single- 52threaded ACPICA tools/applications - increasing performance. The 53_MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED 54option. ACPICA BZ 879. 55 56AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support 57for 64-bit DSDT/FACS addresses in the FADT. Lin Ming. 58 59iASL: Moved all compiler messages to a new file, aslmessages.h. 60 61---------------------------------------- 6215 September 2010. Summary of changes for version 20100915: 63 64This release is available at www.acpica.org/downloads 65 661) ACPI CA Core Subsystem: 67 68Removed the AcpiOsDerivePciId OSL interface. The various host implementations 69of this function were not OS-dependent and are now obsolete and can be 70removed from all host OSLs. This function has been replaced by 71AcpiHwDerivePciId, which is now part of the ACPICA core code. 72AcpiHwDerivePciId has been implemented without recursion. Adds one new 73module, hwpci.c. ACPICA BZ 857. 74 75Implemented a dynamic repair for _HID and _CID strings. The following 76problems are now repaired at runtime: 1) Remove a leading asterisk in the 77string, and 2) the entire string is uppercased. Both repairs are in 78accordance with the ACPI specification and will simplify host driver code. 79ACPICA BZ 871. 80 81The ACPI_THREAD_ID type is no longer configurable, internally it is now 82always UINT64. This simplifies the ACPICA code, especially any printf output. 83UINT64 is the only common data type for all thread_id types across all 84operating systems. It is now up to the host OSL to cast the native thread_id 85type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId). 86Lin Ming, Bob Moore. 87 88Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline" 89keyword is not standard across compilers, and this type allows inline to be 90configured on a per-compiler basis. Lin Ming. 91 92Made the system global AcpiGbl_SystemAwakeAndRunning publically available. 93Added an extern for this boolean in acpixf.h. Some hosts utilize this value 94during suspend/restore operations. ACPICA BZ 869. 95 96All code that implements error/warning messages with the "ACPI:" prefix has 97been moved to a new module, utxferror.c. 98 99The UINT64_OVERLAY was moved to utmath.c, which is the only module where it 100is used. ACPICA BZ 829. Lin Ming, Bob Moore. 101 102Example Code and Data Size: These are the sizes for the OS-independent 103acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 104debug version of the code includes the debug output trace mechanism and has a 105much larger code and data size. 106 107 Previous Release: 108 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 109 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 110 Current Release: 111 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total 112 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total 113 1142) iASL Compiler/Disassembler and Tools: 115 116iASL/Disassembler: Write ACPI errors to stderr instead of the output file. 117This keeps the output files free of random error messages that may originate 118from within the namespace/interpreter code. Used this opportunity to merge 119all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ 120866. Lin Ming, Bob Moore. 121 122Tools: update some printfs for ansi warnings on size_t. Handle width change 123of size_t on 32-bit versus 64-bit generations. Lin Ming. 124 125---------------------------------------- 12606 August 2010. Summary of changes for version 20100806: 127 1281) ACPI CA Core Subsystem: 129 130Designed and implemented a new host interface to the _OSI support code. This 131will allow the host to dynamically add or remove multiple _OSI strings, as 132well as install an optional handler that is called for each _OSI invocation. 133Also added a new AML debugger command, 'osi' to display and modify the global 134_OSI string table, and test support in the AcpiExec utility. See the ACPICA 135reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836. 136New Functions: 137 AcpiInstallInterface - Add an _OSI string. 138 AcpiRemoveInterface - Delete an _OSI string. 139 AcpiInstallInterfaceHandler - Install optional _OSI handler. 140Obsolete Functions: 141 AcpiOsValidateInterface - no longer used. 142New Files: 143 source/components/utilities/utosi.c 144 145Re-introduced the support to enable multi-byte transfers for Embedded 146Controller (EC) operation regions. A reported problem was found to be a bug 147in the host OS, not in the multi-byte support. Previously, the maximum data 148size passed to the EC operation region handler was a single byte. There are 149often EC Fields larger than one byte that need to be transferred, and it is 150useful for the EC driver to lock these as a single transaction. This change 151enables single transfers larger than 8 bits. This effectively changes the 152access to the EC space from ByteAcc to AnyAcc, and will probably require 153changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit 154transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming. 155 156Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The 157prototype in acpiosxf.h had the output value pointer as a (void *). 158It should be a (UINT64 *). This may affect some host OSL code. 159 160Fixed a couple problems with the recently modified Linux makefiles for iASL 161and AcpiExec. These new makefiles place the generated object files in the 162local directory so that there can be no collisions between the files that are 163shared between them that are compiled with different options. 164 165Example Code and Data Size: These are the sizes for the OS-independent 166acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 167debug version of the code includes the debug output trace mechanism and has a 168much larger code and data size. 169 170 Previous Release: 171 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 172 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 173 Current Release: 174 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total 175 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total 176 1772) iASL Compiler/Disassembler and Tools: 178 179iASL/Disassembler: Added a new option (-da, "disassemble all") to load the 180namespace from and disassemble an entire group of AML files. Useful for 181loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and 182disassembling with one simple command. ACPICA BZ 865. Lin Ming. 183 184iASL: Allow multiple invocations of -e option. This change allows multiple 185uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834. 186Lin Ming. 187 188---------------------------------------- 18902 July 2010. Summary of changes for version 20100702: 190 1911) ACPI CA Core Subsystem: 192 193Implemented several updates to the recently added GPE reference count 194support. The model for "wake" GPEs is changing to give the host OS complete 195control of these GPEs. Eventually, the ACPICA core will not execute any _PRW 196methods, since the host already must execute them. Also, additional changes 197were made to help ensure that the reference counts are kept in proper 198synchronization with reality. Rafael J. Wysocki. 199 2001) Ensure that GPEs are not enabled twice during initialization. 2012) Ensure that GPE enable masks stay in sync with the reference count. 2023) Do not inadvertently enable GPEs when writing GPE registers. 2034) Remove the internal wake reference counter and add new AcpiGpeWakeup 204interface. This interface will set or clear individual GPEs for wakeup. 2055) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces 206are now used for "runtime" GPEs only. 207 208Changed the behavior of the GPE install/remove handler interfaces. The GPE is 209no longer disabled during this process, as it was found to cause problems on 210some machines. Rafael J. Wysocki. 211 212Reverted a change introduced in version 20100528 to enable Embedded 213Controller multi-byte transfers. This change was found to cause problems with 214Index Fields and possibly Bank Fields. It will be reintroduced when these 215problems have been resolved. 216 217Fixed a problem with references to Alias objects within Package Objects. A 218reference to an Alias within the definition of a Package was not always 219resolved properly. Aliases to objects like Processors, Thermal zones, etc. 220were resolved to the actual object instead of a reference to the object as it 221should be. Package objects are only allowed to contain integer, string, 222buffer, package, and reference objects. Redhat bugzilla 608648. 223 224Example Code and Data Size: These are the sizes for the OS-independent 225acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 226debug version of the code includes the debug output trace mechanism and has a 227much larger code and data size. 228 229 Previous Release: 230 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 231 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 232 Current Release: 233 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 234 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total 235 2362) iASL Compiler/Disassembler and Tools: 237 238iASL: Implemented a new compiler subsystem to allow definition and 239compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These 240are called "ACPI Data Tables", and the new compiler is the "Data Table 241Compiler". This compiler is intended to simplify the existing error-prone 242process of creating these tables for the BIOS, as well as allowing the 243disassembly, modification, recompilation, and override of existing ACPI data 244tables. See the iASL User Guide for detailed information. 245 246iASL: Implemented a new Template Generator option in support of the new Data 247Table Compiler. This option will create examples of all known ACPI tables 248that can be used as the basis for table development. See the iASL 249documentation and the -T option. 250 251Disassembler and headers: Added support for the WDDT ACPI table (Watchdog 252Descriptor Table). 253 254Updated the Linux makefiles for iASL and AcpiExec to place the generated 255object files in the local directory so that there can be no collisions 256between the shared files between them that are generated with different 257options. 258 259Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use 260the #define __APPLE__ to enable this support. 261 262---------------------------------------- 26328 May 2010. Summary of changes for version 20100528: 264 265Note: The ACPI 4.0a specification was released on April 5, 2010 and is 266available at www.acpi.info. This is primarily an errata release. 267 2681) ACPI CA Core Subsystem: 269 270Undefined ACPI tables: We are looking for the definitions for the following 271ACPI tables that have been seen in the field: ATKG, IEIT, GSCI. 272 273Implemented support to enable multi-byte transfers for Embedded Controller 274(EC) operation regions. Previously, the maximum data size passed to the EC 275operation region handler was a single byte. There are often EC Fields larger 276than one byte that need to be transferred, and it is useful for the EC driver 277to lock these as a single transaction. This change enables single transfers 278larger than 8 bits. This effectively changes the access to the EC space from 279ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded 280Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit 281transfers. Alexey Starikovskiy, Lin Ming 282 283Implemented a performance enhancement for namespace search and access. This 284change enhances the performance of namespace searches and walks by adding a 285backpointer to the parent in each namespace node. On large namespaces, this 286change can improve overall ACPI performance by up to 9X. Adding a pointer to 287each namespace node increases the overall size of the internal namespace by 288about 5%, since each namespace entry usually consists of both a namespace 289node and an ACPI operand object. However, this is the first growth of the 290namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy. 291 292Implemented a performance optimization that reduces the number of namespace 293walks. On control method exit, only walk the namespace if the method is known 294to have created namespace objects outside of its local scope. Previously, the 295entire namespace was traversed on each control method exit. This change can 296improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore. 297 298Added support to truncate I/O addresses to 16 bits for Windows compatibility. 299Some ASL code has been seen in the field that inadvertently has bits set 300above bit 15. This feature is optional and is enabled if the BIOS requests 301any Windows OSI strings. It can also be enabled by the host OS. Matthew 302Garrett, Bob Moore. 303 304Added support to limit the maximum time for the ASL Sleep() operator. To 305prevent accidental deep sleeps, limit the maximum time that Sleep() will 306actually sleep. Configurable, the default maximum is two seconds. ACPICA 307bugzilla 854. 308 309Added run-time validation support for the _WDG and_WED Microsoft predefined 310methods. These objects are defined by "Windows Instrumentation", and are not 311part of the ACPI spec. ACPICA BZ 860. 312 313Expanded all statistic counters used during namespace and device 314initialization from 16 to 32 bits in order to support very large namespaces. 315 316Replaced all instances of %d in printf format specifiers with %u since nearly 317all integers in ACPICA are unsigned. 318 319Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned 320as AE_NO_HANDLER. 321 322Example Code and Data Size: These are the sizes for the OS-independent 323acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 324debug version of the code includes the debug output trace mechanism and has a 325much larger code and data size. 326 327 Previous Release: 328 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 329 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 330 Current Release: 331 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total 332 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total 333 3342) iASL Compiler/Disassembler and Tools: 335 336iASL: Added compiler support for the _WDG and_WED Microsoft predefined 337methods. These objects are defined by "Windows Instrumentation", and are not 338part of the ACPI spec. ACPICA BZ 860. 339 340AcpiExec: added option to disable the memory tracking mechanism. The -dt 341option will disable the tracking mechanism, which improves performance 342considerably. 343 344AcpiExec: Restructured the command line options into -d (disable) and -e 345(enable) options. 346 347---------------------------------------- 34828 April 2010. Summary of changes for version 20100428: 349 3501) ACPI CA Core Subsystem: 351 352Implemented GPE support for dynamically loaded ACPI tables. For all GPEs, 353including FADT-based and GPE Block Devices, execute any _PRW methods in the 354new table, and process any _Lxx/_Exx GPE methods in the new table. Any 355runtime GPE that is referenced by an _Lxx/_Exx method in the new table is 356immediately enabled. Handles the FADT-defined GPEs as well as GPE Block 357Devices. Provides compatibility with other ACPI implementations. Two new 358files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore. 359 360Fixed a regression introduced in version 20100331 within the table manager 361where initial table loading could fail. This was introduced in the fix for 362AcpiReallocateRootTable. Also, renamed some of fields in the table manager 363data structures to clarify their meaning and use. 364 365Fixed a possible allocation overrun during internal object copy in 366AcpiUtCopySimpleObject. The original code did not correctly handle the case 367where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847. 368 369Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a 370possible access beyond end-of-allocation. Also, now fully validate descriptor 371(size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847 372 373Example Code and Data Size: These are the sizes for the OS-independent 374acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 375debug version of the code includes the debug output trace mechanism and has a 376much larger code and data size. 377 378 Previous Release: 379 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 380 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 381 Current Release: 382 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total 383 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total 384 3852) iASL Compiler/Disassembler and Tools: 386 387iASL: Implemented Min/Max/Len/Gran validation for address resource 388descriptors. This change implements validation for the address fields that 389are common to all address-type resource descriptors. These checks are 390implemented: Checks for valid Min/Max, length within the Min/Max window, 391valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per 392table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c 393and aslrestype2.c files into five new files. ACPICA BZ 840. 394 395iASL: Added support for the _Wxx predefined names. This support was missing 396and these names were not recognized by the compiler as valid predefined 397names. ACPICA BZ 851. 398 399iASL: Added an error for all predefined names that are defined to return no 400value and thus must be implemented as Control Methods. These include all of 401the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous 402names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856. 403 404iASL: Implemented the -ts option to emit hex AML data in ASL format, as an 405ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be 406dynamically loaded via the Load() operator. Also cleaned up output for the - 407ta and -tc options. ACPICA BZ 853. 408 409Tests: Added a new file with examples of extended iASL error checking. 410Demonstrates the advanced error checking ability of the iASL compiler. 411Available at tests/misc/badcode.asl. 412 413---------------------------------------- 41431 March 2010. Summary of changes for version 20100331: 415 4161) ACPI CA Core Subsystem: 417 418Completed a major update for the GPE support in order to improve support for 419shared GPEs and to simplify both host OS and ACPICA code. Added a reference 420count mechanism to support shared GPEs that require multiple device drivers. 421Several external interfaces have changed. One external interface has been 422removed. One new external interface was added. Most of the GPE external 423interfaces now use the GPE spinlock instead of the events mutex (and the 424Flags parameter for many GPE interfaces has been removed.) See the updated 425ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 426Wysocki. ACPICA BZ 831. 427 428Changed: 429 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 430Removed: 431 AcpiSetGpeType 432New: 433 AcpiSetGpe 434 435Implemented write support for DataTable operation regions. These regions are 436defined via the DataTableRegion() operator. Previously, only read support was 437implemented. The ACPI specification allows DataTableRegions to be read/write, 438however. 439 440Implemented a new subsystem option to force a copy of the DSDT to local 441memory. Optionally copy the entire DSDT to local memory (instead of simply 442mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 443the original DSDT, creating the need for this option. Default is FALSE, do 444not copy the DSDT. 445 446Implemented detection of a corrupted or replaced DSDT. This change adds 447support to detect a DSDT that has been corrupted and/or replaced from outside 448the OS (by firmware). This is typically catastrophic for the system, but has 449been seen on some machines. Once this problem has been detected, the DSDT 450copy option can be enabled via system configuration. Lin Ming, Bob Moore. 451 452Fixed two problems with AcpiReallocateRootTable during the root table copy. 453When copying the root table to the new allocation, the length used was 454incorrect. The new size was used instead of the current table size, meaning 455too much data was copied. Also, the count of available slots for ACPI tables 456was not set correctly. Alexey Starikovskiy, Bob Moore. 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: 87.5K Code, 18.4K Data, 105.9K Total 465 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 466 Current Release: 467 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 468 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 469 4702) iASL Compiler/Disassembler and Tools: 471 472iASL: Implement limited typechecking for values returned from predefined 473control methods. The type of any returned static (unnamed) object is now 474validated. For example, Return(1). ACPICA BZ 786. 475 476iASL: Fixed a predefined name object verification regression. Fixes a problem 477introduced in version 20100304. An error is incorrectly generated if a 478predefined name is declared as a static named object with a value defined 479using the keywords "Zero", "One", or "Ones". Lin Ming. 480 481iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 482reducing the requested registry access rights. ACPICA BZ 842. 483 484Disassembler: fixed a possible fault when generating External() statements. 485Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 486(carat). Fixes a string length allocation calculation. Lin Ming. 487 488---------------------------------------- 48904 March 2010. Summary of changes for version 20100304: 490 4911) ACPI CA Core Subsystem: 492 493Fixed a possible problem with the AML Mutex handling function 494AcpiExReleaseMutex where the function could fault under the very rare 495condition when the interpreter has blocked, the interpreter lock is released, 496the interpreter is then reentered via the same thread, and attempts to 497acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 498Ming. 499 500Implemented additional configuration support for the AML "Debug Object". 501Output from the debug object can now be enabled via a global variable, 502AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 503This debug output is now available in the release version of ACPICA instead 504of just the debug version. Also, the entire debug output module can now be 505configured out of the ACPICA build if desired. One new file added, 506executer/exdebug.c. Lin Ming, Bob Moore. 507 508Added header support for the ACPI MCHI table (Management Controller Host 509Interface Table). This table was added in ACPI 4.0, but the defining document 510has only recently become available. 511 512Standardized output of integer values for ACPICA warnings/errors. Always use 5130x prefix for hex output, always use %u for unsigned integer decimal output. 514Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 515invocations.) These invocations were converted from the original 516ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 517 518Example Code and Data Size: These are the sizes for the OS-independent 519acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 520debug version of the code includes the debug output trace mechanism and has a 521much larger code and data size. 522 523 Previous 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 Current Release: 527 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 528 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 529 5302) iASL Compiler/Disassembler and Tools: 531 532iASL: Implemented typechecking support for static (non-control method) 533predefined named objects that are declared with the Name() operator. For 534example, the type of this object is now validated to be of type Integer: 535Name(_BBN, 1). This change migrates the compiler to using the core predefined 536name table instead of maintaining a local version. Added a new file, 537aslpredef.c. ACPICA BZ 832. 538 539Disassembler: Added support for the ACPI 4.0 MCHI table. 540 541---------------------------------------- 54221 January 2010. Summary of changes for version 20100121: 543 5441) ACPI CA Core Subsystem: 545 546Added the 2010 copyright to all module headers and signons. This affects 547virtually every file in the ACPICA core subsystem, the iASL compiler, the 548tools/utilities, and the test suites. 549 550Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 551invocations of the _STA method. In the case where a specific _HID is 552requested, do not run _STA until a _HID match is found. This eliminates 553potentially dozens of _STA calls during a search for a particular device/HID, 554which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 555 556Implemented an additional repair for predefined method return values. Attempt 557to repair unexpected NULL elements within returned Package objects. Create an 558Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 559ACPICA BZ 818. Lin Ming, Bob Moore. 560 561Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 562code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 56364-bit AML integers). It is now obsolete and this change removes it from the 564ACPICA code base, replaced by UINT64. The original typedef has been retained 565for now for compatibility with existing device driver code. ACPICA BZ 824. 566 567Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 568the parse tree object. 569 570Added additional warning options for the gcc-4 generation. Updated the source 571accordingly. This includes some code restructuring to eliminate unreachable 572code, elimination of some gotos, elimination of unused return values, some 573additional casting, and removal of redundant declarations. 574 575Example Code and Data Size: These are the sizes for the OS-independent 576acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 577debug version of the code includes the debug output trace mechanism and has a 578much larger code and data size. 579 580 Previous Release: 581 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 582 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 583 Current Release: 584 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 585 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 586 5872) iASL Compiler/Disassembler and Tools: 588 589No functional changes for this release. 590 591---------------------------------------- 59214 December 2009. Summary of changes for version 20091214: 593 5941) ACPI CA Core Subsystem: 595 596Enhanced automatic data type conversions for predefined name repairs. This 597change expands the automatic repairs/conversions for predefined name return 598values to make Integers, Strings, and Buffers fully interchangeable. Also, a 599Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 600module was completely restructured. Lin Ming, Bob Moore. 601 602Implemented automatic removal of null package elements during predefined name 603repairs. This change will automatically remove embedded and trailing NULL 604package elements from returned package objects that are defined to contain a 605variable number of sub-packages. The driver is then presented with a package 606with no null elements to deal with. ACPICA BZ 819. 607 608Implemented a repair for the predefined _FDE and _GTM names. The expected 609return value for both names is a Buffer of 5 DWORDs. This repair fixes two 610possible problems (both seen in the field), where a package of integers is 611returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 612 613Implemented additional module-level code support. This change will properly 614execute module-level code that is not at the root of the namespace (under a 615Device object, etc.). Now executes the code within the current scope instead 616of the root. ACPICA BZ 762. Lin Ming. 617 618Fixed possible mutex acquisition errors when running _REG methods. Fixes a 619problem where mutex errors can occur when running a _REG method that is in 620the same scope as a method-defined operation region or an operation region 621under a module-level IF block. This type of code is rare, so the problem has 622not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 623 624Fixed a possible memory leak during module-level code execution. An object 625could be leaked for each block of executed module-level code if the 626interpreter slack mode is enabled This change deletes any implicitly returned 627object from the module-level code block. Lin Ming. 628 629Removed messages for successful predefined repair(s). The repair mechanism 630was considered too wordy. Now, messages are only unconditionally emitted if 631the return object cannot be repaired. Existing messages for successful 632repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 633 634Example Code and Data Size: These are the sizes for the OS-independent 635acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 636debug version of the code includes the debug output trace mechanism and has a 637much larger code and data size. 638 639 Previous Release: 640 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 641 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 642 Current Release: 643 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 644 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 645 6462) iASL Compiler/Disassembler and Tools: 647 648iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 649were no longer automatically removed at the termination of the compile. 650 651acpiexec: Implemented the -f option to specify default region fill value. 652This option specifies the value used to initialize buffers that simulate 653operation regions. Default value is zero. Useful for debugging problems that 654depend on a specific initial value for a region or field. 655 656---------------------------------------- 65712 November 2009. Summary of changes for version 20091112: 658 6591) ACPI CA Core Subsystem: 660 661Implemented a post-order callback to AcpiWalkNamespace. The existing 662interface only has a pre-order callback. This change adds an additional 663parameter for a post-order callback which will be more useful for bus scans. 664ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 665 666Modified the behavior of the operation region memory mapping cache for 667SystemMemory. Ensure that the memory mappings created for operation regions 668do not cross 4K page boundaries. Crossing a page boundary while mapping 669regions can cause kernel warnings on some hosts if the pages have different 670attributes. Such regions are probably BIOS bugs, and this is the workaround. 671Linux BZ 14445. Lin Ming. 672 673Implemented an automatic repair for predefined methods that must return 674sorted lists. This change will repair (by sorting) packages returned by _ALR, 675_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 676and do not contain NULL package elements. Adds one new file, 677namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 678 679Fixed a possible fault during predefined name validation if a return Package 680object contains NULL elements. Also adds a warning if a NULL element is 681followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 682include repair or removal of all such NULL elements where possible. 683 684Implemented additional module-level executable AML code support. This change 685will execute module-level code that is not at the root of the namespace 686(under a Device object, etc.) at table load time. Module-level executable AML 687code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 688 689Implemented a new internal function to create Integer objects. This function 690simplifies miscellaneous object creation code. ACPICA BZ 823. 691 692Reduced the severity of predefined repair messages, Warning to Info. Since 693the object was successfully repaired, a warning is too severe. Reduced to an 694info message for now. These messages may eventually be changed to debug-only. 695ACPICA BZ 812. 696 697Example Code and Data Size: These are the sizes for the OS-independent 698acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 699debug version of the code includes the debug output trace mechanism and has a 700much larger code and data size. 701 702 Previous Release: 703 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 704 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 705 Current Release: 706 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 707 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 708 7092) iASL Compiler/Disassembler and Tools: 710 711iASL: Implemented Switch() with While(1) so that Break works correctly. This 712change correctly implements the Switch operator with a surrounding While(1) 713so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 714 715iASL: Added a message if a package initializer list is shorter than package 716length. Adds a new remark for a Package() declaration if an initializer list 717exists, but is shorter than the declared length of the package. Although 718technically legal, this is probably a coding error and it is seen in the 719field. ACPICA BZ 815. Lin Ming, Bob Moore. 720 721iASL: Fixed a problem where the compiler could fault after the maximum number 722of errors was reached (200). 723 724acpixtract: Fixed a possible warning for pointer cast if the compiler warning 725level set very high. 726 727---------------------------------------- 72813 October 2009. Summary of changes for version 20091013: 729 7301) ACPI CA Core Subsystem: 731 732Fixed a problem where an Operation Region _REG method could be executed more 733than once. If a custom address space handler is installed by the host before 734the "initialize operation regions" phase of the ACPICA initialization, any 735_REG methods for that address space could be executed twice. This change 736fixes the problem. ACPICA BZ 427. Lin Ming. 737 738Fixed a possible memory leak for the Scope() ASL operator. When the exact 739invocation of "Scope(\)" is executed (change scope to root), one internal 740operand object was leaked. Lin Ming. 741 742Implemented a run-time repair for the _MAT predefined method. If the _MAT 743return value is defined as a Field object in the AML, and the field 744size is less than or equal to the default width of an integer (32 or 64),_MAT 745can incorrectly return an Integer instead of a Buffer. ACPICA now 746automatically repairs this problem. ACPICA BZ 810. 747 748Implemented a run-time repair for the _BIF and _BIX predefined methods. The 749"OEM Information" field is often incorrectly returned as an Integer with 750value zero if the field is not supported by the platform. This is due to an 751ambiguity in the ACPI specification. The field should always be a string. 752ACPICA now automatically repairs this problem by returning a NULL string 753within the returned Package. ACPICA BZ 807. 754 755Example Code and Data Size: These are the sizes for the OS-independent 756acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 757debug version of the code includes the debug output trace mechanism and has a 758much larger code and data size. 759 760 Previous Release: 761 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 762 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 763 Current Release: 764 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 765 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 766 7672) iASL Compiler/Disassembler and Tools: 768 769Disassembler: Fixed a problem where references to external symbols that 770contained one or more parent-prefixes (carats) were not handled correctly, 771possibly causing a fault. ACPICA BZ 806. Lin Ming. 772 773Disassembler: Restructured the code so that all functions that handle 774external symbols are in a single module. One new file is added, 775common/dmextern.c. 776 777AML Debugger: Added a max count argument for the Batch command (which 778executes multiple predefined methods within the namespace.) 779 780iASL: Updated the compiler documentation (User Reference.) Available at 781http://www.acpica.org/documentation/. ACPICA BZ 750. 782 783AcpiXtract: Updated for Lint and other formatting changes. Close all open 784files. 785 786---------------------------------------- 78703 September 2009. Summary of changes for version 20090903: 788 7891) ACPI CA Core Subsystem: 790 791For Windows Vista compatibility, added the automatic execution of an _INI 792method located at the namespace root (\_INI). This method is executed at 793table load time. This support is in addition to the automatic execution of 794\_SB._INI. Lin Ming. 795 796Fixed a possible memory leak in the interpreter for AML package objects if 797the package initializer list is longer than the defined size of the package. 798This apparently can only happen if the BIOS changes the package size on the 799fly (seen in a _PSS object), as ASL compilers do not allow this. The 800interpreter will truncate the package to the defined size (and issue an error 801message), but previously could leave the extra objects undeleted if they were 802pre-created during the argument processing (such is the case if the package 803consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 804 805Fixed a problem seen when a Buffer or String is stored to itself via ASL. 806This has been reported in the field. Previously, ACPICA would zero out the 807buffer/string. Now, the operation is treated as a noop. Provides Windows 808compatibility. ACPICA BZ 803. Lin Ming. 809 810Removed an extraneous error message for ASL constructs of the form 811Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 812are seen in many BIOSs and are once again treated as NOOPs and no error is 813emitted when they are encountered. ACPICA BZ 785. 814 815Fixed an extraneous warning message if a _DSM reserved method returns a 816Package object. _DSM can return any type of object, so validation on the 817return type cannot be performed. ACPICA BZ 802. 818 819Example Code and Data Size: These are the sizes for the OS-independent 820acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 821debug version of the code includes the debug output trace mechanism and has a 822much larger code and data size. 823 824 Previous Release: 825 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 826 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 827 Current Release: 828 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 829 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 830 8312) iASL Compiler/Disassembler and Tools: 832 833iASL: Fixed a problem with the use of the Alias operator and Resource 834Templates. The correct alias is now constructed and no error is emitted. 835ACPICA BZ 738. 836 837iASL: Implemented the -I option to specify additional search directories for 838include files. Allows multiple additional search paths for include files. 839Directories are searched in the order specified on the command line (after 840the local directory is searched.) ACPICA BZ 800. 841 842iASL: Fixed a problem where the full pathname for include files was not 843emitted for warnings/errors. This caused the IDE support to not work 844properly. ACPICA BZ 765. 845 846iASL: Implemented the -@ option to specify a Windows-style response file 847containing additional command line options. ACPICA BZ 801. 848 849AcpiExec: Added support to load multiple AML files simultaneously (such as a 850DSDT and multiple SSDTs). Also added support for wildcards within the AML 851pathname. These features allow all machine tables to be easily loaded and 852debugged together. ACPICA BZ 804. 853 854Disassembler: Added missing support for disassembly of HEST table Error Bank 855subtables. 856 857---------------------------------------- 85830 July 2009. Summary of changes for version 20090730: 859 860The ACPI 4.0 implementation for ACPICA is complete with this release. 861 8621) ACPI CA Core Subsystem: 863 864ACPI 4.0: Added header file support for all new and changed ACPI tables. 865Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 866for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 867EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 868have been some ACPI 4.0 changes to other existing tables. Split the large 869actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 870 871ACPI 4.0: Implemented predefined name validation for all new names. There are 87231 new names in ACPI 4.0. The predefined validation module was split into two 873files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 874 875Implemented support for so-called "module-level executable code". This is 876executable AML code that exists outside of any control method and is intended 877to be executed at table load time. Although illegal since ACPI 2.0, this type 878of code still exists and is apparently still being created. Blocks of this 879code are now detected and executed as intended. Currently, the code blocks 880must exist under either an If, Else, or While construct; these are the 881typical cases seen in the field. ACPICA BZ 762. Lin Ming. 882 883Implemented an automatic dynamic repair for predefined names that return 884nested Package objects. This applies to predefined names that are defined to 885return a variable-length Package of sub-packages. If the number of sub- 886packages is one, BIOS code is occasionally seen that creates a simple single 887package with no sub-packages. This code attempts to fix the problem by 888wrapping a new package object around the existing package. These methods can 889be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 890790. 891 892Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 893The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 894BZ 793. 895 896Fixed a problem with AcpiReset where the reset would silently fail if the 897register was one of the protected I/O ports. AcpiReset now bypasses the port 898validation mechanism. This may eventually be driven into the AcpiRead/Write 899interfaces. 900 901Fixed a regression related to the recent update of the AcpiRead/Write 902interfaces. A sleep/suspend could fail if the optional PM2 Control register 903does not exist during an attempt to write the Bus Master Arbitration bit. 904(However, some hosts already delete the code that writes this bit, and the 905code may in fact be obsolete at this date.) ACPICA BZ 799. 906 907Fixed a problem where AcpiTerminate could fault if inadvertently called twice 908in succession. ACPICA BZ 795. 909 910Example Code and Data Size: These are the sizes for the OS-independent 911acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 912debug version of the code includes the debug output trace mechanism and has a 913much larger code and data size. 914 915 Previous Release: 916 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 917 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 918 Current Release: 919 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 920 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 921 9222) iASL Compiler/Disassembler and Tools: 923 924ACPI 4.0: Implemented disassembler support for all new ACPI tables and 925changes to existing tables. ACPICA BZ 775. 926 927---------------------------------------- 92825 June 2009. Summary of changes for version 20090625: 929 930The ACPI 4.0 Specification was released on June 16 and is available at 931www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 932continue for the next few releases. 933 9341) ACPI CA Core Subsystem: 935 936ACPI 4.0: Implemented interpreter support for the IPMI operation region 937address space. Includes support for bi-directional data buffers and an IPMI 938address space handler (to be installed by an IPMI device driver.) ACPICA BZ 939773. Lin Ming. 940 941ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 942support in both the header files and the disassembler. 943 944Completed a major update for the AcpiGetObjectInfo external interface. 945Changes include: 946 - Support for variable, unlimited length HID, UID, and CID strings. 947 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 948 - Call the _SxW power methods on behalf of a device object. 949 - Determine if a device is a PCI root bridge. 950 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 951These changes will require an update to all callers of this interface. See 952the updated ACPICA Programmer Reference for details. One new source file has 953been added - utilities/utids.c. ACPICA BZ 368, 780. 954 955Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 956transfers. The Value parameter has been extended from 32 bits to 64 bits in 957order to support new ACPI 4.0 tables. These changes will require an update to 958all callers of these interfaces. See the ACPICA Programmer Reference for 959details. ACPICA BZ 768. 960 961Fixed several problems with AcpiAttachData. The handler was not invoked when 962the host node was deleted. The data sub-object was not automatically deleted 963when the host node was deleted. The interface to the handler had an unused 964parameter, this was removed. ACPICA BZ 778. 965 966Enhanced the function that dumps ACPI table headers. All non-printable 967characters in the string fields are now replaced with '?' (Signature, OemId, 968OemTableId, and CompilerId.) ACPI tables with non-printable characters in 969these fields are occasionally seen in the field. ACPICA BZ 788. 970 971Fixed a problem with predefined method repair code where the code that 972attempts to repair/convert an object of incorrect type is only executed on 973the first time the predefined method is called. The mechanism that disables 974warnings on subsequent calls was interfering with the repair mechanism. 975ACPICA BZ 781. 976 977Fixed a possible memory leak in the predefined validation/repair code when a 978buffer is automatically converted to an expected string object. 979 980Removed obsolete 16-bit files from the distribution and from the current git 981tree head. ACPICA BZ 776. 982 983Example Code and Data Size: These are the sizes for the OS-independent 984acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 985debug version of the code includes the debug output trace mechanism and has a 986much larger code and data size. 987 988 Previous Release: 989 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 990 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 991 Current Release: 992 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 993 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 994 9952) iASL Compiler/Disassembler and Tools: 996 997ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 998operation region keyword. ACPICA BZ 771, 772. Lin Ming. 999 1000ACPI 4.0: iASL - implemented compile-time validation support for all new 1001predefined names and control methods (31 total). ACPICA BZ 769. 1002 1003---------------------------------------- 100421 May 2009. Summary of changes for version 20090521: 1005 10061) ACPI CA Core Subsystem: 1007 1008Disabled the preservation of the SCI enable bit in the PM1 control register. 1009The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 1010a "preserved" bit - "OSPM always preserves this bit position", section 10114.7.3.2.1. However, some machines fail if this bit is in fact preserved 1012because the bit needs to be explicitly set by the OS as a workaround. No 1013machines fail if the bit is not preserved. Therefore, ACPICA no longer 1014attempts to preserve this bit. 1015 1016Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 1017incorrectly formed _PRT package could cause a fault. Added validation to 1018ensure that each package element is actually a sub-package. 1019 1020Implemented a new interface to install or override a single control method, 1021AcpiInstallMethod. This interface is useful when debugging in order to repair 1022an existing method or to install a missing method without having to override 1023the entire ACPI table. See the ACPICA Programmer Reference for use and 1024examples. Lin Ming, Bob Moore. 1025 1026Fixed several reference count issues with the DdbHandle object that is 1027created from a Load or LoadTable operator. Prevent premature deletion of the 1028object. Also, mark the object as invalid once the table has been unloaded. 1029This is needed because the handle itself may not be deleted after the table 1030unload, depending on whether it has been stored in a named object by the 1031caller. Lin Ming. 1032 1033Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 1034mutexes of the same sync level are acquired but then not released in strict 1035opposite order, the internally maintained Current Sync Level becomes confused 1036and can cause subsequent execution errors. ACPICA BZ 471. 1037 1038Changed the allowable release order for ASL mutex objects. The ACPI 4.0 1039specification has been changed to make the SyncLevel for mutex objects more 1040useful. When releasing a mutex, the SyncLevel of the mutex must now be the 1041same as the current sync level. This makes more sense than the previous rule 1042(SyncLevel less than or equal). This change updates the code to match the 1043specification. 1044 1045Fixed a problem with the local version of the AcpiOsPurgeCache function. The 1046(local) cache must be locked during all cache object deletions. Andrew 1047Baumann. 1048 1049Updated the Load operator to use operation region interfaces. This replaces 1050direct memory mapping with region access calls. Now, all region accesses go 1051through the installed region handler as they should. 1052 1053Simplified and optimized the NsGetNextNode function. Reduced parameter count 1054and reduced code for this frequently used function. 1055 1056Example Code and Data Size: These are the sizes for the OS-independent 1057acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1058debug version of the code includes the debug output trace mechanism and has a 1059much larger code and data size. 1060 1061 Previous Release: 1062 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1063 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1064 Current Release: 1065 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 1066 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 1067 10682) iASL Compiler/Disassembler and Tools: 1069 1070Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 1071with sub-table disassembly and handling invalid sub-tables. Attempt recovery 1072after an invalid sub-table ID. 1073 1074---------------------------------------- 107522 April 2009. Summary of changes for version 20090422: 1076 10771) ACPI CA Core Subsystem: 1078 1079Fixed a compatibility issue with the recently released I/O port protection 1080mechanism. For windows compatibility, 1) On a port protection violation, 1081simply ignore the request and do not return an exception (allow the control 1082method to continue execution.) 2) If only part of the request overlaps a 1083protected port, read/write the individual ports that are not protected. Linux 1084BZ 13036. Lin Ming 1085 1086Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 1087breaks into the AML debugger if the debugger is present. This matches the 1088ACPI-defined behavior. 1089 1090Fixed several possible warnings related to the use of the configurable 1091ACPI_THREAD_ID. This type can now be configured as either an integer or a 1092pointer with no warnings. Also fixes several warnings in printf-like 1093statements for the 64-bit build when the type is configured as a pointer. 1094ACPICA BZ 766, 767. 1095 1096Fixed a number of possible warnings when compiling with gcc 4+ (depending on 1097warning options.) Examples include printf formats, aliasing, unused globals, 1098missing prototypes, missing switch default statements, use of non-ANSI 1099library functions, use of non-ANSI constructs. See generate/unix/Makefile for 1100a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 1101 1102Example Code and Data Size: These are the sizes for the OS-independent 1103acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1104debug version of the code includes the debug output trace mechanism and has a 1105much larger code and data size. 1106 1107 Previous Release: 1108 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1109 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1110 Current Release: 1111 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 1112 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 1113 11142) iASL Compiler/Disassembler and Tools: 1115 1116iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 1117the 64-bit build. 1118 1119iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 1120correctly digest Windows/DOS formatted files (with CR/LF). 1121 1122iASL: Added a new option for "quiet mode" (-va) that produces only the 1123compilation summary, not individual errors and warnings. Useful for large 1124batch compilations. 1125 1126AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 1127timeout that can be used to detect hang conditions during execution of AML 1128code (includes both internal semaphores and AML-defined mutexes and events.) 1129 1130Added new makefiles for the generation of acpica in a generic unix-like 1131environment. These makefiles are intended to generate the acpica tools and 1132utilities from the original acpica git source tree structure. 1133 1134Test Suites: Updated and cleaned up the documentation files. Updated the 1135copyrights to 2009, affecting all source files. Use the new version of iASL 1136with quiet mode. Increased the number of available semaphores in the Windows 1137OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 1138an alternate implementation of the semaphore timeout to allow aslts to 1139execute fully on Cygwin. 1140 1141---------------------------------------- 114220 March 2009. Summary of changes for version 20090320: 1143 11441) ACPI CA Core Subsystem: 1145 1146Fixed a possible race condition between AcpiWalkNamespace and dynamic table 1147unloads. Added a reader/writer locking mechanism to allow multiple concurrent 1148namespace walks (readers), but block a dynamic table unload until it can gain 1149exclusive write access to the namespace. This fixes a problem where a table 1150unload could (possibly catastrophically) delete the portion of the namespace 1151that is currently being examined by a walk. Adds a new file, utlock.c, that 1152implements the reader/writer lock mechanism. ACPICA BZ 749. 1153 1154Fixed a regression introduced in version 20090220 where a change to the FADT 1155handling could cause the ACPICA subsystem to access non-existent I/O ports. 1156 1157Modified the handling of FADT register and table (FACS/DSDT) addresses. The 1158FADT can contain both 32-bit and 64-bit versions of these addresses. 1159Previously, the 64-bit versions were favored, meaning that if both 32 and 64 1160versions were valid, but not equal, the 64-bit version was used. This was 1161found to cause some machines to fail. Now, in this case, the 32-bit version 1162is used instead. This now matches the Windows behavior. 1163 1164Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 1165compatibility and protects the standard PC I/O ports from access via AML 1166code. Adds a new file, hwvalid.c 1167 1168Fixed a possible extraneous warning message from the FADT support. The 1169message warns of a 32/64 length mismatch between the legacy and GAS 1170definitions for a register. 1171 1172Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 1173made obsolete by the port protection mechanism above. It was previously used 1174to validate the entire address range of an operation region, which could be 1175incorrect if the range included illegal ports, but fields within the 1176operation region did not actually access those ports. Validation is now 1177performed on a per-field basis instead of the entire region. 1178 1179Modified the handling of the PM1 Status Register ignored bit (bit 11.) 1180Ignored bits must be "preserved" according to the ACPI spec. Usually, this 1181means a read/modify/write when writing to the register. However, for status 1182registers, writing a one means clear the event. Writing a zero means preserve 1183the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 1184and the ACPICA code now simply always writes a zero to the ignored bit. 1185 1186Modified the handling of ignored bits for the PM1 A/B Control Registers. As 1187per the ACPI specification, for the control registers, preserve 1188(read/modify/write) all bits that are defined as either reserved or ignored. 1189 1190Updated the handling of write-only bits in the PM1 A/B Control Registers. 1191When reading the register, zero the write-only bits as per the ACPI spec. 1192ACPICA BZ 443. Lin Ming. 1193 1194Removed "Linux" from the list of supported _OSI strings. Linux no longer 1195wants to reply true to this request. The Windows strings are the only paths 1196through the AML that are tested and known to work properly. 1197 1198 Previous Release: 1199 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1200 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1201 Current Release: 1202 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 1203 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 1204 12052) iASL Compiler/Disassembler and Tools: 1206 1207Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 1208aetables.c 1209 1210---------------------------------------- 121120 February 2009. Summary of changes for version 20090220: 1212 12131) ACPI CA Core Subsystem: 1214 1215Optimized the ACPI register locking. Removed locking for reads from the ACPI 1216bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 1217not required when reading the single-bit registers. The 1218AcpiGetRegisterUnlocked function is no longer needed and has been removed. 1219This will improve performance for reads on these registers. ACPICA BZ 760. 1220 1221Fixed the parameter validation for AcpiRead/Write. Now return 1222AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 1223the register has an address of zero. Previously, these cases simply returned 1224AE_OK. For optional registers such as PM1B status/enable/control, the caller 1225should check for a valid register address before calling. ACPICA BZ 748. 1226 1227Renamed the external ACPI bit register access functions. Renamed 1228AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 1229functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 1230Also, restructured the code for these functions by simplifying the code path 1231and condensing duplicate code to reduce code size. 1232 1233Added new functions to transparently handle the possibly split PM1 A/B 1234registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 1235now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 1236746. 1237 1238Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 1239This function writes both of the PM1 control registers (A/B). These registers 1240are different than the PM1 A/B status and enable registers in that different 1241values can be written to the A/B registers. Most notably, the SLP_TYP bits 1242can be different, as per the values returned from the _Sx predefined methods. 1243 1244Removed an extra register write within AcpiHwClearAcpiStatus. This function 1245was writing an optional PM1B status register twice. The existing call to the 1246low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 1247register. ACPICA BZ 751. 1248 1249Split out the PM1 Status registers from the FADT. Added new globals for these 1250registers (A/B), similar to the way the PM1 Enable registers are handled. 1251Instead of overloading the FADT Event Register blocks. This makes the code 1252clearer and less prone to error. 1253 1254Fixed the warning message for when the platform contains too many ACPI tables 1255for the default size of the global root table data structure. The calculation 1256for the truncation value was incorrect. 1257 1258Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 1259obsolete macro, since it is now a simple reference to ->common.type. There 1260were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 1261 1262Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 1263TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 1264simply SLEEP_TYPE. ACPICA BZ 754. 1265 1266Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 1267function is only needed on 64-bit host operating systems and is thus not 1268included for 32-bit hosts. 1269 1270Debug output: print the input and result for invocations of the _OSI reserved 1271control method via the ACPI_LV_INFO debug level. Also, reduced some of the 1272verbosity of this debug level. Len Brown. 1273 1274Example Code and Data Size: These are the sizes for the OS-independent 1275acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1276debug version of the code includes the debug output trace mechanism and has a 1277much larger code and data size. 1278 1279 Previous Release: 1280 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1281 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1282 Current Release: 1283 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 1284 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 1285 12862) iASL Compiler/Disassembler and Tools: 1287 1288Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 1289various legal performance profiles. 1290 1291---------------------------------------- 129223 January 2009. Summary of changes for version 20090123: 1293 12941) ACPI CA Core Subsystem: 1295 1296Added the 2009 copyright to all module headers and signons. This affects 1297virtually every file in the ACPICA core subsystem, the iASL compiler, and 1298the tools/utilities. 1299 1300Implemented a change to allow the host to override any ACPI table, including 1301dynamically loaded tables. Previously, only the DSDT could be replaced by the 1302host. With this change, the AcpiOsTableOverride interface is called for each 1303table found in the RSDT/XSDT during ACPICA initialization, and also whenever 1304a table is dynamically loaded via the AML Load operator. 1305 1306Updated FADT flag definitions, especially the Boot Architecture flags. 1307 1308Debugger: For the Find command, automatically pad the input ACPI name with 1309underscores if the name is shorter than 4 characters. This enables a match 1310with the actual namespace entry which is itself padded with underscores. 1311 1312Example Code and Data Size: These are the sizes for the OS-independent 1313acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1314debug version of the code includes the debug output trace mechanism and has a 1315much larger code and data size. 1316 1317 Previous Release: 1318 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1319 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1320 Current Release: 1321 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 1322 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 1323 13242) iASL Compiler/Disassembler and Tools: 1325 1326Fix build error under Bison-2.4. 1327 1328Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 1329flags. Now decode all flags, regardless of the FADT version. Flag output 1330includes the FADT version which first defined each flag. 1331 1332The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 1333DSDT). Windows only. 1334 1335---------------------------------------- 133604 December 2008. Summary of changes for version 20081204: 1337 13381) ACPI CA Core Subsystem: 1339 1340The ACPICA Programmer Reference has been completely updated and revamped for 1341this release. This includes updates to the external interfaces, OSL 1342interfaces, the overview sections, and the debugger reference. 1343 1344Several new ACPICA interfaces have been implemented and documented in the 1345programmer reference: 1346AcpiReset - Writes the reset value to the FADT-defined reset register. 1347AcpiDisableAllGpes - Disable all available GPEs. 1348AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 1349AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 1350AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 1351AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 1352AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 1353 1354Most of the public ACPI hardware-related interfaces have been moved to a new 1355file, components/hardware/hwxface.c 1356 1357Enhanced the FADT parsing and low-level ACPI register access: The ACPI 1358register lengths within the FADT are now used, and the low level ACPI 1359register access no longer hardcodes the ACPI register lengths. Given that 1360there may be some risk in actually trusting the FADT register lengths, a run- 1361time option was added to fall back to the default hardcoded lengths if the 1362FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 1363option is set to true for now, and a warning is issued if a suspicious FADT 1364register length is overridden with the default value. 1365 1366Fixed a reference count issue in NsRepairObject. This problem was introduced 1367in version 20081031 as part of a fix to repair Buffer objects within 1368Packages. Lin Ming. 1369 1370Added semaphore support to the Linux/Unix application OS-services layer 1371(OSL). ACPICA BZ 448. Lin Ming. 1372 1373Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 1374be implemented in the OSL, or will binary semaphores be used instead. 1375 1376Example Code and Data Size: These are the sizes for the OS-independent 1377acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1378debug version of the code includes the debug output trace mechanism and has a 1379much larger code and data size. 1380 1381 Previous Release: 1382 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1383 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1384 Current Release: 1385 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 1386 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 1387 13882) iASL Compiler/Disassembler and Tools: 1389 1390iASL: Completed the '-e' option to include additional ACPI tables in order to 1391aid with disassembly and External statement generation. ACPICA BZ 742. Lin 1392Ming. 1393 1394iASL: Removed the "named object in while loop" error. The compiler cannot 1395determine how many times a loop will execute. ACPICA BZ 730. 1396 1397Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 1398BZ 743. 1399 1400Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 1401 1402---------------------------------------- 140331 October 2008. Summary of changes for version 20081031: 1404 14051) ACPI CA Core Subsystem: 1406 1407Restructured the ACPICA header files into public/private. acpi.h now includes 1408only the "public" acpica headers. All other acpica headers are "private" and 1409should not be included by acpica users. One new file, accommon.h is used to 1410include the commonly used private headers for acpica code generation. Future 1411plans include moving all private headers to a new subdirectory. 1412 1413Implemented an automatic Buffer->String return value conversion for 1414predefined ACPI methods. For these methods (such as _BIF), added automatic 1415conversion for return objects that are required to be a String, but a Buffer 1416was found instead. This can happen when reading string battery data from an 1417operation region, because it used to be difficult to convert the data from 1418buffer to string from within the ASL. Ensures that the host OS is provided 1419with a valid null-terminated string. Linux BZ 11822. 1420 1421Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1422into two: one for the 32-bit vector, another for the 64-bit vector. This is 1423required because the host OS must setup the wake much differently for each 1424vector (real vs. protected mode, etc.) and the interface itself should not be 1425deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1426interface, as it served no purpose (only the firmware reads the vector, OS 1427only writes the vector.) ACPICA BZ 731. 1428 1429Implemented a mechanism to escape infinite AML While() loops. Added a loop 1430counter to force exit from AML While loops if the count becomes too large. 1431This can occur in poorly written AML when the hardware does not respond 1432within a while loop and the loop does not implement a timeout. The maximum 1433loop count is configurable. A new exception code is returned when a loop is 1434broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1435 1436Optimized the execution of AML While loops. Previously, a control state 1437object was allocated and freed for each execution of the loop. The 1438optimization is to simply reuse the control state for each iteration. This 1439speeds up the raw loop execution time by about 5%. 1440 1441Enhanced the implicit return mechanism. For Windows compatibility, return an 1442implicit integer of value zero for methods that contain no executable code. 1443Such methods are seen in the field as stubs (presumably), and can cause 1444drivers to fail if they expect a return value. Lin Ming. 1445 1446Allow multiple backslashes as root prefixes in namepaths. In a fully 1447qualified namepath, allow multiple backslash prefixes. This can happen (and 1448is seen in the field) because of the use of a double-backslash in strings 1449(since backslash is the escape character) causing confusion. ACPICA BZ 739 1450Lin Ming. 1451 1452Emit a warning if two different FACS or DSDT tables are discovered in the 1453FADT. Checks if there are two valid but different addresses for the FACS and 1454DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1455 1456Consolidated the method argument count validation code. Merged the code that 1457validates control method argument counts into the predefined validation 1458module. Eliminates possible multiple warnings for incorrect argument counts. 1459 1460Implemented ACPICA example code. Includes code for ACPICA initialization, 1461handler installation, and calling a control method. Available at 1462source/tools/examples. 1463 1464Added a global pointer for FACS table to simplify internal FACS access. Use 1465the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1466This simplifies the code for the Global Lock and the Firmware Waking 1467Vector(s). 1468 1469Example Code and Data Size: These are the sizes for the OS-independent 1470acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1471debug version of the code includes the debug output trace mechanism and has a 1472much larger code and data size. 1473 1474 Previous Release: 1475 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1476 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1477 Current Release: 1478 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1479 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1480 14812) iASL Compiler/Disassembler and Tools: 1482 1483iASL: Improved disassembly of external method calls. Added the -e option to 1484allow the inclusion of additional ACPI tables to help with the disassembly of 1485method invocations and the generation of external declarations during the 1486disassembly. Certain external method invocations cannot be disassembled 1487properly without the actual declaration of the method. Use the -e option to 1488include the table where the external method(s) are actually declared. Most 1489useful for disassembling SSDTs that make method calls back to the master 1490DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1491-e dsdt.aml ssdt1.aml 1492 1493iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1494problem where the use of an alias within a namepath would result in a not 1495found error or cause the compiler to fault. Also now allows forward 1496references from the Alias operator itself. ACPICA BZ 738. 1497 1498---------------------------------------- 149926 September 2008. Summary of changes for version 20080926: 1500 15011) ACPI CA Core Subsystem: 1502 1503Designed and implemented a mechanism to validate predefined ACPI methods and 1504objects. This code validates the predefined ACPI objects (objects whose names 1505start with underscore) that appear in the namespace, at the time they are 1506evaluated. The argument count and the type of the returned object are 1507validated against the ACPI specification. The purpose of this validation is 1508to detect problems with the BIOS-implemented predefined ACPI objects before 1509the results are returned to the ACPI-related drivers. Future enhancements may 1510include actual repair of incorrect return objects where possible. Two new 1511files are nspredef.c and acpredef.h. 1512 1513Fixed a fault in the AML parser if a memory allocation fails during the Op 1514completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1515 1516Fixed an issue with implicit return compatibility. This change improves the 1517implicit return mechanism to be more compatible with the MS interpreter. Lin 1518Ming, ACPICA BZ 349. 1519 1520Implemented support for zero-length buffer-to-string conversions. Allow zero 1521length strings during interpreter buffer-to-string conversions. For example, 1522during the ToDecimalString and ToHexString operators, as well as implicit 1523conversions. Fiodor Suietov, ACPICA BZ 585. 1524 1525Fixed two possible memory leaks in the error exit paths of 1526AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1527similar in that they use a stack of state objects in order to eliminate 1528recursion. The stack must be fully unwound and deallocated if an error 1529occurs. Lin Ming. ACPICA BZ 383. 1530 1531Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1532ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1533Moore ACPICA BZ 442. 1534 1535Removed the obsolete version number in module headers. Removed the 1536"$Revision" number that appeared in each module header. This version number 1537was useful under SourceSafe and CVS, but has no meaning under git. It is not 1538only incorrect, it could also be misleading. 1539 1540Example Code and Data Size: These are the sizes for the OS-independent 1541acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1542debug version of the code includes the debug output trace mechanism and has a 1543much larger code and data size. 1544 1545 Previous Release: 1546 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1547 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1548 Current Release: 1549 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1550 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1551 1552---------------------------------------- 155329 August 2008. Summary of changes for version 20080829: 1554 15551) ACPI CA Core Subsystem: 1556 1557Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1558Reference. Changes include the elimination of cheating on the Object field 1559for the DdbHandle subtype, addition of a reference class field to 1560differentiate the various reference types (instead of an AML opcode), and the 1561cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1562 1563Reduce an error to a warning for an incorrect method argument count. 1564Previously aborted with an error if too few arguments were passed to a 1565control method via the external ACPICA interface. Now issue a warning instead 1566and continue. Handles the case where the method inadvertently declares too 1567many arguments, but does not actually use the extra ones. Applies mainly to 1568the predefined methods. Lin Ming. Linux BZ 11032. 1569 1570Disallow the evaluation of named object types with no intrinsic value. Return 1571AE_TYPE for objects that have no value and therefore evaluation is undefined: 1572Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1573these types were allowed, but an exception would be generated at some point 1574during the evaluation. Now, the error is generated up front. 1575 1576Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1577(nsnames.c). Fixes a leak in the error exit path. 1578 1579Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1580levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1581interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1582ACPI_LV_EVENTS. 1583 1584Removed obsolete and/or unused exception codes from the acexcep.h header. 1585There is the possibility that certain device drivers may be affected if they 1586use any of these exceptions. 1587 1588The ACPICA documentation has been added to the public git source tree, under 1589acpica/documents. Included are the ACPICA programmer reference, the iASL 1590compiler reference, and the changes.txt release logfile. 1591 1592Example Code and Data Size: These are the sizes for the OS-independent 1593acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1594debug version of the code includes the debug output trace mechanism and has a 1595much larger code and data size. 1596 1597 Previous Release: 1598 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1599 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1600 Current Release: 1601 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1602 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1603 16042) iASL Compiler/Disassembler and Tools: 1605 1606Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1607defines _SCP with 3 arguments. Previous versions defined it with only 1 1608argument. iASL now allows both definitions. 1609 1610iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1611length subtables when disassembling ACPI tables. Also fixed a couple of 1612errors where a full 16-bit table type field was not extracted from the input 1613properly. 1614 1615acpisrc: Improve comment counting mechanism for generating source code 1616statistics. Count first and last lines of multi-line comments as whitespace, 1617not comment lines. Handle Linux legal header in addition to standard acpica 1618header. 1619 1620---------------------------------------- 1621 162229 July 2008. Summary of changes for version 20080729: 1623 16241) ACPI CA Core Subsystem: 1625 1626Fix a possible deadlock in the GPE dispatch. Remove call to 1627AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1628to acquire the GPE lock but can deadlock since the GPE lock is already held 1629at dispatch time. This code was introduced in version 20060831 as a response 1630to Linux BZ 6881 and has since been removed from Linux. 1631 1632Add a function to dereference returned reference objects. Examines the return 1633object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1634automatically dereferenced in an attempt to return something useful (these 1635reference types cannot be converted into an external ACPI_OBJECT.) Provides 1636MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1637 1638x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1639subtables for the MADT and one new subtable for the SRAT. Includes 1640disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1641Specification, June 2008. 1642 1643Additional error checking for pathname utilities. Add error check after all 1644calls to AcpiNsGetPathnameLength. Add status return from 1645AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1646to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1647 1648Return status from the global init function AcpiUtGlobalInitialize. This is 1649used by both the kernel subsystem and the utilities such as iASL compiler. 1650The function could possibly fail when the caches are initialized. Yang Yi. 1651 1652Add a function to decode reference object types to strings. Created for 1653improved error messages. 1654 1655Improve object conversion error messages. Better error messages during object 1656conversion from internal to the external ACPI_OBJECT. Used for external calls 1657to AcpiEvaluateObject. 1658 1659Example Code and Data Size: These are the sizes for the OS-independent 1660acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1661debug version of the code includes the debug output trace mechanism and has a 1662much larger code and data size. 1663 1664 Previous Release: 1665 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1666 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1667 Current Release: 1668 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1669 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1670 16712) iASL Compiler/Disassembler and Tools: 1672 1673Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1674introduced in version 20080701. If the object being evaluated (via execute 1675command) is not a method, the debugger can hang while trying to obtain non- 1676existent parameters. 1677 1678iASL: relax error for using reserved "_T_x" identifiers. These names can 1679appear in a disassembled ASL file if they were emitted by the original 1680compiler. Instead of issuing an error or warning and forcing the user to 1681manually change these names, issue a remark instead. 1682 1683iASL: error if named object created in while loop. Emit an error if any named 1684object is created within a While loop. If allowed, this code will generate a 1685run-time error on the second iteration of the loop when an attempt is made to 1686create the same named object twice. ACPICA bugzilla 730. 1687 1688iASL: Support absolute pathnames for include files. Add support for absolute 1689pathnames within the Include operator. previously, only relative pathnames 1690were supported. 1691 1692iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1693The ACPI spec requires one interrupt minimum. BZ 423 1694 1695iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1696Handles the case for the Interrupt Resource Descriptor where 1697the ResourceSource argument is omitted but ResourceSourceIndex 1698is present. Now leave room for the Index. BZ 426 1699 1700iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1701where an error message is emitted if the target does not exist. BZ 516 1702 1703iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1704(get ACPI tables on Windows). This was apparently broken in version 20070919. 1705 1706AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1707the EOF happens immediately after the last table in the input file. Print 1708completion message. Previously, no message was displayed in this case. 1709 1710---------------------------------------- 171101 July 2008. Summary of changes for version 20080701: 1712 17130) Git source tree / acpica.org 1714 1715Fixed a problem where a git-clone from http would not transfer the entire 1716source tree. 1717 17181) ACPI CA Core Subsystem: 1719 1720Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1721enable bit. Now performs a read-change-write of the enable register instead 1722of simply writing out the cached enable mask. This will prevent inadvertent 1723enabling of GPEs if a rogue GPE is received during initialization (before GPE 1724handlers are installed.) 1725 1726Implemented a copy for dynamically loaded tables. Previously, dynamically 1727loaded tables were simply mapped - but on some machines this memory is 1728corrupted after suspend. Now copy the table to a local buffer. For the 1729OpRegion case, added checksum verify. Use the table length from the table 1730header, not the region length. For the Buffer case, use the table length 1731also. Dennis Noordsij, Bob Moore. BZ 10734 1732 1733Fixed a problem where the same ACPI table could not be dynamically loaded and 1734unloaded more than once. Without this change, a table cannot be loaded again 1735once it has been loaded/unloaded one time. The current mechanism does not 1736unregister a table upon an unload. During a load, if the same table is found, 1737this no longer returns an exception. BZ 722 1738 1739Fixed a problem where the wrong descriptor length was calculated for the 1740EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1741are calculated as 12 bytes long, but the actual length in the internal 1742descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1743by Linn Crosetto. BZ 728 1744 1745Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1746by Load() did not have its reference count decremented during unload, leading 1747to a memory leak. Lin Ming. BZ 727 1748 1749Fixed a possible memory leak when deleting thermal/processor objects. Any 1750associated notify handlers (and objects) were not being deleted. Fiodor 1751Suietov. BZ 506 1752 1753Fixed the ordering of the ASCII names in the global mutex table to match the 1754actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1755Vegard Nossum. BZ 726 1756 1757Enhanced the AcpiGetObjectInfo interface to return the number of required 1758arguments if the object is a control method. Added this call to the debugger 1759so the proper number of default arguments are passed to a method. This 1760prevents a warning when executing methods from AcpiExec. 1761 1762Added a check for an invalid handle in AcpiGetObjectInfo. Return 1763AE_BAD_PARAMETER if input handle is invalid. BZ 474 1764 1765Fixed an extraneous warning from exconfig.c on the 64-bit build. 1766 1767Example Code and Data Size: These are the sizes for the OS-independent 1768acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1769debug version of the code includes the debug output trace mechanism and has a 1770much larger code and data size. 1771 1772 Previous Release: 1773 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1774 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1775 Current Release: 1776 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1777 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1778 17792) iASL Compiler/Disassembler and Tools: 1780 1781iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1782resource descriptor names. 1783 1784iASL: Detect invalid ASCII characters in input (windows version). Removed the 1785"-CF" flag from the flex compile, enables correct detection of non-ASCII 1786characters in the input. BZ 441 1787 1788iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1789"result of operation not used" warning when the DDB handle returned from 1790LoadTable is not used. The warning is not needed. BZ 590 1791 1792AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1793pass address of table to the AML. Added option to disable OpRegion simulation 1794to allow creation of an OpRegion with a real address that was passed to _CFG. 1795All of this allows testing of the Load and Unload operators from AcpiExec. 1796 1797Debugger: update tables command for unloaded tables. Handle unloaded tables 1798and use the standard table header output routine. 1799 1800---------------------------------------- 180109 June 2008. Summary of changes for version 20080609: 1802 18031) ACPI CA Core Subsystem: 1804 1805Implemented a workaround for reversed _PRT entries. A significant number of 1806BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1807change dynamically detects and repairs this problem. Provides compatibility 1808with MS ACPI. BZ 6859 1809 1810Simplified the internal ACPI hardware interfaces to eliminate the locking 1811flag parameter from Register Read/Write. Added a new external interface, 1812AcpiGetRegisterUnlocked. 1813 1814Fixed a problem where the invocation of a GPE control method could hang. This 1815was a regression introduced in 20080514. The new method argument count 1816validation mechanism can enter an infinite loop when a GPE method is 1817dispatched. Problem fixed by removing the obsolete code that passed GPE block 1818information to the notify handler via the control method parameter pointer. 1819 1820Fixed a problem where the _SST execution status was incorrectly returned to 1821the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 182220080514. _SST is optional and a NOT_FOUND exception should never be 1823returned. BZ 716 1824 1825Fixed a problem where a deleted object could be accessed from within the AML 1826parser. This was a regression introduced in version 20080123 as a fix for the 1827Unload operator. Lin Ming. BZ 10669 1828 1829Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1830and eliminated the use of a negative index in a loop. Operands are now 1831displayed in the correct order, not backwards. This also fixes a regression 1832introduced in 20080514 on 64-bit systems where the elimination of 1833ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1834 1835Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1836path did not delete a locally allocated structure. 1837 1838Updated definitions for the DMAR and SRAT tables to synchronize with the 1839current specifications. Includes disassembler support. 1840 1841Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1842loop termination value was used. Loop terminated on iteration early, missing 1843one mutex. Linn Crosetto 1844 1845Example Code and Data Size: These are the sizes for the OS-independent 1846acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1847debug version of the code includes the debug output trace mechanism and has a 1848much larger code and data size. 1849 1850 Previous Release: 1851 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1852 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1853 Current Release: 1854 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1855 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1856 18572) iASL Compiler/Disassembler and Tools: 1858 1859Disassembler: Implemented support for EisaId() within _CID objects. Now 1860disassemble integer _CID objects back to EisaId invocations, including 1861multiple integers within _CID packages. Includes single-step support for 1862debugger also. 1863 1864Disassembler: Added support for DMAR and SRAT table definition changes. 1865 1866---------------------------------------- 186714 May 2008. Summary of changes for version 20080514: 1868 18691) ACPI CA Core Subsystem: 1870 1871Fixed a problem where GPEs were enabled too early during the ACPICA 1872initialization. This could lead to "handler not installed" errors on some 1873machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1874ensures that all operation regions and devices throughout the namespace have 1875been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1876 1877Implemented a change to the enter sleep code. Moved execution of the _GTS 1878method to just before setting sleep enable bit. The execution was moved from 1879AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1880immediately before the SLP_EN bit is set, as per the ACPI specification. 1881Luming Yu, BZ 1653. 1882 1883Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1884the GPE, even if ACPICA thinks that that it is already disabled. It is 1885possible that the AML or some other code has enabled the GPE unbeknownst to 1886the ACPICA code. 1887 1888Fixed a problem with the Field operator where zero-length fields would return 1889an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1890field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1891 1892Implemented a fix for the Load operator, now load the table at the namespace 1893root. This reverts a change introduced in version 20071019. The table is now 1894loaded at the namespace root even though this goes against the ACPI 1895specification. This provides compatibility with other ACPI implementations. 1896The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1897 1898Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1899Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1900acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1901Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1902signatures, ACPICA must be compatible. BZ 10454. 1903 1904Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1905fields to the exception string arrays to eliminate a -1 subtraction on the 1906SubStatus field. 1907 1908Updated the debug tracking macros to reduce overall code and data size. 1909Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1910instead of pointers to static strings. Jan Beulich and Bob Moore. 1911 1912Implemented argument count checking in control method invocation via 1913AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1914many. This applies only to extern programmatic control method execution, not 1915method-to-method calls within the AML. Lin Ming. 1916 1917Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1918longer needed, especially with the removal of 16-bit support. It was replaced 1919mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 192032/64-bit platforms is required. 1921 1922Added the C const qualifier for appropriate string constants -- mostly 1923MODULE_NAME and printf format strings. Jan Beulich. 1924 1925Example Code and Data Size: These are the sizes for the OS-independent 1926acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1927debug version of the code includes the debug output trace mechanism and has a 1928much larger code and data size. 1929 1930 Previous Release: 1931 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1932 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1933 Current Release: 1934 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1935 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1936 19372) iASL Compiler/Disassembler and Tools: 1938 1939Implemented ACPI table revision ID validation in the disassembler. Zero is 1940always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1941means 32-bit and this is unusual. 2 or greater is 64-bit. 1942 1943---------------------------------------- 194421 March 2008. Summary of changes for version 20080321: 1945 19461) ACPI CA Core Subsystem: 1947 1948Implemented an additional change to the GPE support in order to suppress 1949spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1950disable incoming GPEs that are neither enabled nor disabled -- meaning that 1951the GPE is unknown to the system. This should prevent future interrupt floods 1952from that GPE. BZ 6217 (Zhang Rui) 1953 1954Fixed a problem where NULL package elements were not returned to the 1955AcpiEvaluateObject interface correctly. The element was simply ignored 1956instead of returning a NULL ACPI_OBJECT package element, potentially causing 1957a buffer overflow and/or confusing the caller who expected a fixed number of 1958elements. BZ 10132 (Lin Ming, Bob Moore) 1959 1960Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1961Qword), Field, BankField, and IndexField operators when invoked from inside 1962an executing control method. In this case, these operators created namespace 1963nodes that were incorrectly left marked as permanent nodes instead of 1964temporary nodes. This could cause a problem if there is race condition 1965between an exiting control method and a running namespace walk. (Reported by 1966Linn Crosetto) 1967 1968Fixed a problem where the CreateField and CreateXXXField operators would 1969incorrectly allow duplicate names (the name of the field) with no exception 1970generated. 1971 1972Implemented several changes for Notify handling. Added support for new Notify 1973values (ACPI 2.0+) and improved the Notify debug output. Notify on 1974PowerResource objects is no longer allowed, as per the ACPI specification. 1975(Bob Moore, Zhang Rui) 1976 1977All Reference Objects returned via the AcpiEvaluateObject interface are now 1978marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1979NULL objects - either NULL package elements or unresolved named references. 1980 1981Fixed a problem where an extraneous debug message was produced for package 1982objects (when debugging enabled). The message "Package List length larger 1983than NumElements count" is now produced in the correct case, and is now an 1984error message rather than a debug message. Added a debug message for the 1985opposite case, where NumElements is larger than the Package List (the package 1986will be padded out with NULL elements as per the ACPI spec.) 1987 1988Implemented several improvements for the output of the ASL "Debug" object to 1989clarify and keep all data for a given object on one output line. 1990 1991Fixed two size calculation issues with the variable-length Start Dependent 1992resource descriptor. 1993 1994Example Code and Data Size: These are the sizes for the OS-independent 1995acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1996debug version of the code includes the debug output trace mechanism and has 1997a much larger code and data size. 1998 1999 Previous Release: 2000 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2001 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2002 Current Release: 2003 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 2004 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 2005 20062) iASL Compiler/Disassembler and Tools: 2007 2008Fixed a problem with the use of the Switch operator where execution of the 2009containing method by multiple concurrent threads could cause an 2010AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 2011actual Switch opcode, it must be simulated with local named temporary 2012variables and if/else pairs. The solution chosen was to mark any method that 2013uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 2014 2015---------------------------------------- 201613 February 2008. Summary of changes for version 20080213: 2017 20181) ACPI CA Core Subsystem: 2019 2020Implemented another MS compatibility design change for GPE/Notify handling. 2021GPEs are now cleared/enabled asynchronously to allow all pending notifies to 2022complete first. It is expected that the OSL will queue the enable request 2023behind all pending notify requests (may require changes to the local host OSL 2024in AcpiOsExecute). Alexey Starikovskiy. 2025 2026Fixed a problem where buffer and package objects passed as arguments to a 2027control method via the external AcpiEvaluateObject interface could cause an 2028AE_AML_INTERNAL exception depending on the order and type of operators 2029executed by the target control method. 2030 2031Fixed a problem where resource descriptor size optimization could cause a 2032problem when a _CRS resource template is passed to a _SRS method. The _SRS 2033resource template must use the same descriptors (with the same size) as 2034returned from _CRS. This change affects the following resource descriptors: 2035IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 2036 2037Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 2038objects did not perform an implicit conversion as it should. These types must 2039retain their initial type permanently as per the ACPI specification. However, 2040a CopyObject to all other object types should not perform an implicit 2041conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 2042 2043Fixed a problem with the AcpiGetDevices interface where the mechanism to 2044match device CIDs did not examine the entire list of available CIDs, but 2045instead aborted on the first non-matching CID. Andrew Patterson. 2046 2047Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 2048inadvertently changed to return a 16-bit value instead of a 32-bit value, 2049truncating the upper dword of a 64-bit value. This macro is only used to 2050display debug output, so no incorrect calculations were made. Also, 2051reimplemented the macro so that a 64-bit shift is not performed by 2052inefficient compilers. 2053 2054Added missing va_end statements that should correspond with each va_start 2055statement. 2056 2057Example Code and Data Size: These are the sizes for the OS-independent 2058acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2059debug version of the code includes the debug output trace mechanism and has 2060a much larger code and data size. 2061 2062 Previous Release: 2063 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2064 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2065 Current Release: 2066 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 2067 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 2068 20692) iASL Compiler/Disassembler and Tools: 2070 2071Implemented full disassembler support for the following new ACPI tables: 2072BERT, EINJ, and ERST. Implemented partial disassembler support for the 2073complicated HEST table. These tables support the Windows Hardware Error 2074Architecture (WHEA). 2075 2076---------------------------------------- 207723 January 2008. Summary of changes for version 20080123: 2078 20791) ACPI CA Core Subsystem: 2080 2081Added the 2008 copyright to all module headers and signons. This affects 2082virtually every file in the ACPICA core subsystem, the iASL compiler, and 2083the tools/utilities. 2084 2085Fixed a problem with the SizeOf operator when used with Package and Buffer 2086objects. These objects have deferred execution for some arguments, and the 2087execution is now completed before the SizeOf is executed. This problem caused 2088unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 20899558 2090 2091Implemented an enhancement to the interpreter "slack mode". In the absence of 2092an explicit return or an implicitly returned object from the last executed 2093opcode, a control method will now implicitly return an integer of value 0 for 2094Microsoft compatibility. (Lin Ming) BZ 392 2095 2096Fixed a problem with the Load operator where an exception was not returned in 2097the case where the table is already loaded. (Lin Ming) BZ 463 2098 2099Implemented support for the use of DDBHandles as an Indexed Reference, as per 2100the ACPI spec. (Lin Ming) BZ 486 2101 2102Implemented support for UserTerm (Method invocation) for the Unload operator 2103as per the ACPI spec. (Lin Ming) BZ 580 2104 2105Fixed a problem with the LoadTable operator where the OemId and OemTableId 2106input strings could cause unexpected failures if they were shorter than the 2107maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 2108 2109Implemented support for UserTerm (Method invocation) for the Unload operator 2110as per the ACPI spec. (Lin Ming) BZ 580 2111 2112Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 2113IBFT, UEFI, WDAT. Disassembler support is forthcoming. 2114 2115Example Code and Data Size: These are the sizes for the OS-independent 2116acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2117debug version of the code includes the debug output trace mechanism and has 2118a much larger code and data size. 2119 2120 Previous Release: 2121 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2122 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2123 Current Release: 2124 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 2125 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 2126 21272) iASL Compiler/Disassembler and Tools: 2128 2129Implemented support in the disassembler for checksum validation on incoming 2130binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 2131header dump at the start of the disassembly. 2132 2133Implemented additional debugging information in the namespace listing file 2134created during compilation. In addition to the namespace hierarchy, the full 2135pathname to each namespace object is displayed. 2136 2137Fixed a problem with the disassembler where invalid ACPI tables could cause 2138faults or infinite loops. 2139 2140Fixed an unexpected parse error when using the optional "parameter types" 2141list in a control method declaration. (Lin Ming) BZ 397 2142 2143Fixed a problem where two External declarations with the same name did not 2144cause an error (Lin Ming) BZ 509 2145 2146Implemented support for full TermArgs (adding Argx, Localx and method 2147invocation) for the ParameterData parameter to the LoadTable operator. (Lin 2148Ming) BZ 583,587 2149 2150---------------------------------------- 215119 December 2007. Summary of changes for version 20071219: 2152 21531) ACPI CA Core Subsystem: 2154 2155Implemented full support for deferred execution for the TermArg string 2156arguments for DataTableRegion. This enables forward references and full 2157operand resolution for the three string arguments. Similar to OperationRegion 2158deferred argument execution.) Lin Ming. BZ 430 2159 2160Implemented full argument resolution support for the BankValue argument to 2161BankField. Previously, only constants were supported, now any TermArg may be 2162used. Lin Ming BZ 387, 393 2163 2164Fixed a problem with AcpiGetDevices where the search of a branch of the 2165device tree could be terminated prematurely. In accordance with the ACPI 2166specification, the search down the current branch is terminated if a device 2167is both not present and not functional (instead of just not present.) Yakui 2168Zhao. 2169 2170Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 2171the underlying AML code changed the GPE enable registers. Now, any unknown 2172incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 2173instead of simply ignored. Rui Zhang. 2174 2175Fixed a problem with Index Fields where the Index register was incorrectly 2176limited to a maximum of 32 bits. Now any size may be used. 2177 2178Fixed a couple memory leaks associated with "implicit return" objects when 2179the AML Interpreter slack mode is enabled. Lin Ming BZ 349 2180 2181Example Code and Data Size: These are the sizes for the OS-independent 2182acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2183debug version of the code includes the debug output trace mechanism and has 2184a much larger code and data size. 2185 2186 Previous Release: 2187 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2188 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2189 Current Release: 2190 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 2191 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 2192 2193---------------------------------------- 219414 November 2007. Summary of changes for version 20071114: 2195 21961) ACPI CA Core Subsystem: 2197 2198Implemented event counters for each of the Fixed Events, the ACPI SCI 2199(interrupt) itself, and control methods executed. Named 2200AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 2201should be useful for debugging and statistics. 2202 2203Implemented a new external interface, AcpiGetStatistics, to retrieve the 2204contents of the various event counters. Returns the current values for 2205AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 2206AcpiMethodCount. The interface can be expanded in the future if new counters 2207are added. Device drivers should use this interface rather than access the 2208counters directly. 2209 2210Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 2211the ShortDivide function worked incorrectly, causing problems with the BCD 2212functions with large input values. A truncation from 64-bit to 32-bit 2213inadvertently occurred. Internal BZ 435. Lin Ming 2214 2215Fixed a problem with Index references passed as method arguments. References 2216passed as arguments to control methods were dereferenced immediately (before 2217control was passed to the called method). The references are now correctly 2218passed directly to the called method. BZ 5389. Lin Ming 2219 2220Fixed a problem with CopyObject used in conjunction with the Index operator. 2221The reference was incorrectly dereferenced before the copy. The reference is 2222now correctly copied. BZ 5391. Lin Ming 2223 2224Fixed a problem with Control Method references within Package objects. These 2225references are now correctly generated. This completes the package 2226construction overhaul that began in version 20071019. 2227 2228Example Code and Data Size: These are the sizes for the OS-independent 2229acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2230debug version of the code includes the debug output trace mechanism and has 2231a much larger code and data size. 2232 2233 Previous Release: 2234 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2235 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2236 Current Release: 2237 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 2238 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 2239 2240 22412) iASL Compiler/Disassembler and Tools: 2242 2243The AcpiExec utility now installs handlers for all of the predefined 2244Operation Region types. New types supported are: PCI_Config, CMOS, and 2245PCIBARTarget. 2246 2247Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 2248bit) address fields for the DSDT and FACS within the FADT were not being 2249used, causing truncation of the upper 32-bits of these addresses. Lin Ming 2250and Bob Moore 2251 2252---------------------------------------- 225319 October 2007. Summary of changes for version 20071019: 2254 22551) ACPI CA Core Subsystem: 2256 2257Fixed a problem with the Alias operator when the target of the alias is a 2258named ASL operator that opens a new scope -- Scope, Device, PowerResource, 2259Processor, and ThermalZone. In these cases, any children of the original 2260operator could not be accessed via the alias, potentially causing unexpected 2261AE_NOT_FOUND exceptions. (BZ 9067) 2262 2263Fixed a problem with the Package operator where all named references were 2264created as object references and left otherwise unresolved. According to the 2265ACPI specification, a Package can only contain Data Objects or references to 2266control methods. The implication is that named references to Data Objects 2267(Integer, Buffer, String, Package, BufferField, Field) should be resolved 2268immediately upon package creation. This is the approach taken with this 2269change. References to all other named objects (Methods, Devices, Scopes, 2270etc.) are all now properly created as reference objects. (BZ 5328) 2271 2272Reverted a change to Notify handling that was introduced in version 227320070508. This version changed the Notify handling from asynchronous to 2274fully synchronous (Device driver Notify handling with respect to the Notify 2275ASL operator). It was found that this change caused more problems than it 2276solved and was removed by most users. 2277 2278Fixed a problem with the Increment and Decrement operators where the type of 2279the target object could be unexpectedly and incorrectly changed. (BZ 353) 2280Lin Ming. 2281 2282Fixed a problem with the Load and LoadTable operators where the table 2283location within the namespace was ignored. Instead, the table was always 2284loaded into the root or current scope. Lin Ming. 2285 2286Fixed a problem with the Load operator when loading a table from a buffer 2287object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 2288 2289Fixed a problem with the Debug object where a store of a DdbHandle reference 2290object to the Debug object could cause a fault. 2291 2292Added a table checksum verification for the Load operator, in the case where 2293the load is from a buffer. (BZ 578). 2294 2295Implemented additional parameter validation for the LoadTable operator. The 2296length of the input strings SignatureString, OemIdString, and OemTableId are 2297now checked for maximum lengths. (BZ 582) Lin Ming. 2298 2299Example Code and Data Size: These are the sizes for the OS-independent 2300acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2301debug version of the code includes the debug output trace mechanism and has 2302a much larger code and data size. 2303 2304 Previous Release: 2305 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2306 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2307 Current Release: 2308 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 2309 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 2310 2311 23122) iASL Compiler/Disassembler: 2313 2314Fixed a problem where if a single file was specified and the file did not 2315exist, no error message was emitted. (Introduced with wildcard support in 2316version 20070917.) 2317 2318---------------------------------------- 231919 September 2007. Summary of changes for version 20070919: 2320 23211) ACPI CA Core Subsystem: 2322 2323Designed and implemented new external interfaces to install and remove 2324handlers for ACPI table-related events. Current events that are defined are 2325LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 2326they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 2327AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 2328 2329Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 2330(acpi_serialized option on Linux) could cause some systems to hang during 2331initialization. (Bob Moore) BZ 8171 2332 2333Fixed a problem where objects of certain types (Device, ThermalZone, 2334Processor, PowerResource) can be not found if they are declared and 2335referenced from within the same control method (Lin Ming) BZ 341 2336 2337Example Code and Data Size: These are the sizes for the OS-independent 2338acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2339debug version of the code includes the debug output trace mechanism and has 2340a much larger code and data size. 2341 2342 Previous Release: 2343 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2344 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2345 Current Release: 2346 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 2347 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 2348 2349 23502) iASL Compiler/Disassembler: 2351 2352Implemented support to allow multiple files to be compiled/disassembled in a 2353single invocation. This includes command line wildcard support for both the 2354Windows and Unix versions of the compiler. This feature simplifies the 2355disassembly and compilation of multiple ACPI tables in a single directory. 2356 2357---------------------------------------- 235808 May 2007. Summary of changes for version 20070508: 2359 23601) ACPI CA Core Subsystem: 2361 2362Implemented a Microsoft compatibility design change for the handling of the 2363Notify AML operator. Previously, notify handlers were dispatched and 2364executed completely asynchronously in a deferred thread. The new design 2365still executes the notify handlers in a different thread, but the original 2366thread that executed the Notify() now waits at a synchronization point for 2367the notify handler to complete. Some machines depend on a synchronous Notify 2368operator in order to operate correctly. 2369 2370Implemented support to allow Package objects to be passed as method 2371arguments to the external AcpiEvaluateObject interface. Previously, this 2372would return the AE_NOT_IMPLEMENTED exception. This feature had not been 2373implemented since there were no reserved control methods that required it 2374until recently. 2375 2376Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 2377contained invalid non-zero values in reserved fields could cause later 2378failures because these fields have meaning in later revisions of the FADT. 2379For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 2380are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 2381 2382Fixed a problem where the Global Lock handle was not properly updated if a 2383thread that acquired the Global Lock via executing AML code then attempted 2384to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 2385Liu. 2386 2387Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 2388could be corrupted if the interrupt being removed was at the head of the 2389list. Reported by Linn Crosetto. 2390 2391Example Code and Data Size: These are the sizes for the OS-independent 2392acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2393debug version of the code includes the debug output trace mechanism and has 2394a much larger code and data size. 2395 2396 Previous 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 Current Release: 2400 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 2401 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 2402 2403---------------------------------------- 240420 March 2007. Summary of changes for version 20070320: 2405 24061) ACPI CA Core Subsystem: 2407 2408Implemented a change to the order of interpretation and evaluation of AML 2409operand objects within the AML interpreter. The interpreter now evaluates 2410operands in the order that they appear in the AML stream (and the 2411corresponding ASL code), instead of in the reverse order (after the entire 2412operand list has been parsed). The previous behavior caused several subtle 2413incompatibilities with the Microsoft AML interpreter as well as being 2414somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2415 2416Implemented a change to the ACPI Global Lock support. All interfaces to the 2417global lock now allow the same thread to acquire the lock multiple times. 2418This affects the AcpiAcquireGlobalLock external interface to the global lock 2419as well as the internal use of the global lock to support AML fields -- a 2420control method that is holding the global lock can now simultaneously access 2421AML fields that require global lock protection. Previously, in both cases, 2422this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2423AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2424Controller. There is no change to the behavior of the AML Acquire operator, 2425as this can already be used to acquire a mutex multiple times by the same 2426thread. BZ 8066. With assistance from Alexey Starikovskiy. 2427 2428Fixed a problem where invalid objects could be referenced in the AML 2429Interpreter after error conditions. During operand evaluation, ensure that 2430the internal "Return Object" field is cleared on error and only valid 2431pointers are stored there. Caused occasional access to deleted objects that 2432resulted in "large reference count" warning messages. Valery Podrezov. 2433 2434Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2435deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2436Podrezov. 2437 2438Fixed an internal problem with the handling of result objects on the 2439interpreter result stack. BZ 7872. Valery Podrezov. 2440 2441Removed obsolete code that handled the case where AML_NAME_OP is the target 2442of a reference (Reference.Opcode). This code was no longer necessary. BZ 24437874. Valery Podrezov. 2444 2445Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2446remnant from the previously discontinued 16-bit support. 2447 2448Example Code and Data Size: These are the sizes for the OS-independent 2449acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2450debug version of the code includes the debug output trace mechanism and has 2451a much larger code and data size. 2452 2453 Previous Release: 2454 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2455 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2456 Current Release: 2457 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2458 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2459 2460---------------------------------------- 246126 January 2007. Summary of changes for version 20070126: 2462 24631) ACPI CA Core Subsystem: 2464 2465Added the 2007 copyright to all module headers and signons. This affects 2466virtually every file in the ACPICA core subsystem, the iASL compiler, and 2467the utilities. 2468 2469Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2470during a table load. A bad pointer was passed in the case where the DSDT is 2471overridden, causing a fault in this case. 2472 2473Example Code and Data Size: These are the sizes for the OS-independent 2474acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2475debug version of the code includes the debug output trace mechanism and has 2476a much larger code and data size. 2477 2478 Previous Release: 2479 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2480 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2481 Current Release: 2482 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2483 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2484 2485---------------------------------------- 248615 December 2006. Summary of changes for version 20061215: 2487 24881) ACPI CA Core Subsystem: 2489 2490Support for 16-bit ACPICA has been completely removed since it is no longer 2491necessary and it clutters the code. All 16-bit macros, types, and 2492conditional compiles have been removed, cleaning up and simplifying the code 2493across the entire subsystem. DOS support is no longer needed since the 2494bootable Linux firmware kit is now available. 2495 2496The handler for the Global Lock is now removed during AcpiTerminate to 2497enable a clean subsystem restart, via the implementation of the 2498AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2499HP) 2500 2501Implemented enhancements to the multithreading support within the debugger 2502to enable improved multithreading debugging and evaluation of the subsystem. 2503(Valery Podrezov) 2504 2505Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2506memory used during the execution, as well as the maximum memory consumed by 2507each of the various object types. (Valery Podrezov) 2508 2509Example Code and Data Size: These are the sizes for the OS-independent 2510acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2511debug version of the code includes the debug output trace mechanism and has 2512a much larger code and data size. 2513 2514 Previous Release: 2515 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2516 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2517 Current Release: 2518 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2519 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2520 2521 25222) iASL Compiler/Disassembler and Tools: 2523 2524AcpiExec: Implemented a new option (-m) to display full memory use 2525statistics upon subsystem/program termination. (Valery Podrezov) 2526 2527---------------------------------------- 252809 November 2006. Summary of changes for version 20061109: 2529 25301) ACPI CA Core Subsystem: 2531 2532Optimized the Load ASL operator in the case where the source operand is an 2533operation region. Simply map the operation region memory, instead of 2534performing a bytewise read. (Region must be of type SystemMemory, see 2535below.) 2536 2537Fixed the Load ASL operator for the case where the source operand is a 2538region field. A buffer object is also allowed as the source operand. BZ 480 2539 2540Fixed a problem where the Load ASL operator allowed the source operand to be 2541an operation region of any type. It is now restricted to regions of type 2542SystemMemory, as per the ACPI specification. BZ 481 2543 2544Additional cleanup and optimizations for the new Table Manager code. 2545 2546AcpiEnable will now fail if all of the required ACPI tables are not loaded 2547(FADT, FACS, DSDT). BZ 477 2548 2549Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2550header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2551manually optimized to be aligned and will not work if it is byte-packed. 2552 2553Example Code and Data Size: These are the sizes for the OS-independent 2554acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2555debug version of the code includes the debug output trace mechanism and has 2556a much larger code and data size. 2557 2558 Previous 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 Current Release: 2562 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2563 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2564 2565 25662) iASL Compiler/Disassembler and Tools: 2567 2568Fixed a problem where the presence of the _OSI predefined control method 2569within complex expressions could cause an internal compiler error. 2570 2571AcpiExec: Implemented full region support for multiple address spaces. 2572SpaceId is now part of the REGION object. BZ 429 2573 2574---------------------------------------- 257511 October 2006. Summary of changes for version 20061011: 2576 25771) ACPI CA Core Subsystem: 2578 2579Completed an AML interpreter performance enhancement for control method 2580execution. Previously a 2-pass parse/execution, control methods are now 2581completely parsed and executed in a single pass. This improves overall 2582interpreter performance by ~25%, reduces code size, and reduces CPU stack 2583use. (Valery Podrezov + interpreter changes in version 20051202 that 2584eliminated namespace loading during the pass one parse.) 2585 2586Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2587match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2588obtained and also checked for an ID match. 2589 2590Implemented additional support for the PCI _ADR execution: upsearch until a 2591device scope is found before executing _ADR. This allows PCI_Config 2592operation regions to be declared locally within control methods underneath 2593PCI device objects. 2594 2595Fixed a problem with a possible race condition between threads executing 2596AcpiWalkNamespace and the AML interpreter. This condition was removed by 2597modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2598entries created during any concurrent control method execution. An 2599additional namespace race condition is known to exist between 2600AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2601investigation. 2602 2603Restructured the AML ParseLoop function, breaking it into several 2604subfunctions in order to reduce CPU stack use and improve maintainability. 2605(Mikhail Kouzmich) 2606 2607AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2608of prefix handle and pathname. BZ 478 2609 2610Example Code and Data Size: These are the sizes for the OS-independent 2611acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2612debug version of the code includes the debug output trace mechanism and has 2613a much larger code and data size. 2614 2615 Previous Release: 2616 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2617 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2618 Current Release: 2619 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2620 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2621 26222) iASL Compiler/Disassembler and Tools: 2623 2624Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2625to restore original behavior. 2626 2627---------------------------------------- 262827 September 2006. Summary of changes for version 20060927: 2629 26301) ACPI CA Core Subsystem: 2631 2632Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2633These functions now use a spinlock for mutual exclusion and the interrupt 2634level indication flag is not needed. 2635 2636Fixed a problem with the Global Lock where the lock could appear to be 2637obtained before it is actually obtained. The global lock semaphore was 2638inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2639Suietov. 2640 2641Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2642a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2643 2644Example Code and Data Size: These are the sizes for the OS-independent 2645acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2646debug version of the code includes the debug output trace mechanism and has 2647a much larger code and data size. 2648 2649 Previous Release: 2650 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2651 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2652 Current Release: 2653 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2654 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2655 2656 26572) iASL Compiler/Disassembler and Tools: 2658 2659Fixed a compilation problem with the pre-defined Resource Descriptor field 2660names where an "object does not exist" error could be incorrectly generated 2661if the parent ResourceTemplate pathname places the template within a 2662different namespace scope than the current scope. (BZ 7212) 2663 2664Fixed a problem where the compiler could hang after syntax errors detected 2665in an ElseIf construct. (BZ 453) 2666 2667Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2668operator. An incorrect output filename was produced when this parameter was 2669a null string (""). Now, the original input filename is used as the AML 2670output filename, with an ".aml" extension. 2671 2672Implemented a generic batch command mode for the AcpiExec utility (execute 2673any AML debugger command) (Valery Podrezov). 2674 2675---------------------------------------- 267612 September 2006. Summary of changes for version 20060912: 2677 26781) ACPI CA Core Subsystem: 2679 2680Enhanced the implementation of the "serialized mode" of the interpreter 2681(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2682specified, instead of creating a serialization semaphore per control method, 2683the interpreter lock is simply no longer released before a blocking 2684operation during control method execution. This effectively makes the AML 2685Interpreter single-threaded. The overhead of a semaphore per-method is 2686eliminated. 2687 2688Fixed a regression where an error was no longer emitted if a control method 2689attempts to create 2 objects of the same name. This once again returns 2690AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2691will dynamically serialize the control method to possible prevent future 2692errors. (BZ 440) 2693 2694Integrated a fix for a problem with PCI Express HID detection in the PCI 2695Config Space setup procedure. (BZ 7145) 2696 2697Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2698AcpiHwInitialize function - the FADT registers are now validated when the 2699table is loaded. 2700 2701Added two new warnings during FADT verification - 1) if the FADT is larger 2702than the largest known FADT version, and 2) if there is a mismatch between a 270332-bit block address and the 64-bit X counterpart (when both are non-zero.) 2704 2705Example Code and Data Size: These are the sizes for the OS-independent 2706acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2707debug version of the code includes the debug output trace mechanism and has 2708a much larger code and data size. 2709 2710 Previous Release: 2711 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2712 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2713 Current Release: 2714 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2715 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2716 2717 27182) iASL Compiler/Disassembler and Tools: 2719 2720Fixed a problem with the implementation of the Switch() operator where the 2721temporary variable was declared too close to the actual Switch, instead of 2722at method level. This could cause a problem if the Switch() operator is 2723within a while loop, causing an error on the second iteration. (BZ 460) 2724 2725Disassembler - fix for error emitted for unknown type for target of scope 2726operator. Now, ignore it and continue. 2727 2728Disassembly of an FADT now verifies the input FADT and reports any errors 2729found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2730 2731Disassembly of raw data buffers with byte initialization data now prefixes 2732each output line with the current buffer offset. 2733 2734Disassembly of ASF! table now includes all variable-length data fields at 2735the end of some of the subtables. 2736 2737The disassembler now emits a comment if a buffer appears to be a 2738ResourceTemplate, but cannot be disassembled as such because the EndTag does 2739not appear at the very end of the buffer. 2740 2741AcpiExec - Added the "-t" command line option to enable the serialized mode 2742of the AML interpreter. 2743 2744---------------------------------------- 274531 August 2006. Summary of changes for version 20060831: 2746 27471) ACPI CA Core Subsystem: 2748 2749Miscellaneous fixes for the Table Manager: 2750- Correctly initialize internal common FADT for all 64-bit "X" fields 2751- Fixed a couple table mapping issues during table load 2752- Fixed a couple alignment issues for IA64 2753- Initialize input array to zero in AcpiInitializeTables 2754- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2755AcpiGetTableByIndex 2756 2757Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2758immediately disabled to prevent the waking GPE from firing again and to 2759prevent other wake GPEs from interrupting the wake process. 2760 2761Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2762be used for debugging systems with a large number of ACPI interrupts. 2763 2764Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2765both the ACPICA headers and the disassembler. 2766 2767Example Code and Data Size: These are the sizes for the OS-independent 2768acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2769debug version of the code includes the debug output trace mechanism and has 2770a much larger code and data size. 2771 2772 Previous Release: 2773 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2774 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2775 Current Release: 2776 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2777 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2778 2779 27802) iASL Compiler/Disassembler and Tools: 2781 2782Disassembler support for the DMAR ACPI table. 2783 2784---------------------------------------- 278523 August 2006. Summary of changes for version 20060823: 2786 27871) ACPI CA Core Subsystem: 2788 2789The Table Manager component has been completely redesigned and 2790reimplemented. The new design is much simpler, and reduces the overall code 2791and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2792now possible to obtain the ACPI tables very early during kernel 2793initialization, even before dynamic memory management is initialized. 2794(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2795 2796Obsolete ACPICA interfaces: 2797 2798- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2799time). 2800- AcpiLoadTable: Not needed. 2801- AcpiUnloadTable: Not needed. 2802 2803New ACPICA interfaces: 2804 2805- AcpiInitializeTables: Must be called before the table manager can be used. 2806- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2807allocated memory after it becomes available. 2808- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2809in the RSDT/XSDT. 2810 2811Other ACPICA changes: 2812 2813- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2814AcpiOsUnmapMemory to free this mapping. 2815- AcpiGetTable returns the actual mapped table. The mapping is managed 2816internally and must not be deleted by the caller. Use of this interface 2817causes no additional dynamic memory allocation. 2818- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2819it appeared to be unused. 2820- The interface to AcpiOsMapMemory has changed to be consistent with the 2821other allocation interfaces. 2822- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2823parameters. 2824- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2825bit platforms. Was previously 64 bits on all platforms. 2826- The interface to the ACPI Global Lock acquire/release macros have changed 2827slightly since ACPICA no longer keeps a local copy of the FACS with a 2828constructed pointer to the actual global lock. 2829 2830Porting to the new table manager: 2831 2832- AcpiInitializeTables: Must be called once, and can be called anytime 2833during the OS initialization process. It allows the host to specify an area 2834of memory to be used to store the internal version of the RSDT/XSDT (root 2835table). This allows the host to access ACPI tables before memory management 2836is initialized and running. 2837- AcpiReallocateRootTable: Can be called after memory management is running 2838to copy the root table to a dynamically allocated array, freeing up the 2839scratch memory specified in the call to AcpiInitializeTables. 2840- AcpiSubsystemInitialize: This existing interface is independent of the 2841Table Manager, and does not have to be called before the Table Manager can 2842be used, it only must be called before the rest of ACPICA can be used. 2843- ACPI Tables: Some changes have been made to the names and structure of the 2844actbl.h and actbl1.h header files and may require changes to existing code. 2845For example, bitfields have been completely removed because of their lack of 2846portability across C compilers. 2847- Update interfaces to the Global Lock acquire/release macros if local 2848versions are used. (see acwin.h) 2849 2850Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2851 2852New files: tbfind.c 2853 2854Example Code and Data Size: These are the sizes for the OS-independent 2855acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2856debug version of the code includes the debug output trace mechanism and has 2857a much larger code and data size. 2858 2859 Previous Release: 2860 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2861 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2862 Current Release: 2863 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2864 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2865 2866 28672) iASL Compiler/Disassembler and Tools: 2868 2869No changes for this release. 2870 2871---------------------------------------- 287221 July 2006. Summary of changes for version 20060721: 2873 28741) ACPI CA Core Subsystem: 2875 2876The full source code for the ASL test suite used to validate the iASL 2877compiler and the ACPICA core subsystem is being released with the ACPICA 2878source for the first time. The source is contained in a separate package and 2879consists of over 1100 files that exercise all ASL/AML operators. The package 2880should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2881Suietov) 2882 2883Completed a new design and implementation for support of the ACPI Global 2884Lock. On the OS side, the global lock is now treated as a standard AML 2885mutex. Previously, multiple OS threads could "acquire" the global lock 2886simultaneously. However, this could cause the BIOS to be starved out of the 2887lock - especially in cases such as the Embedded Controller driver where 2888there is a tight coupling between the OS and the BIOS. 2889 2890Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2891The Global Lock interrupt handler no longer queues the execution of a 2892separate thread to signal the global lock semaphore. Instead, the semaphore 2893is signaled directly from the interrupt handler. 2894 2895Implemented support within the AML interpreter for package objects that 2896contain a larger AML length (package list length) than the package element 2897count. In this case, the length of the package is truncated to match the 2898package element count. Some BIOS code apparently modifies the package length 2899on the fly, and this change supports this behavior. Provides compatibility 2900with the MS AML interpreter. (With assistance from Fiodor Suietov) 2901 2902Implemented a temporary fix for the BankValue parameter of a Bank Field to 2903support all constant values, now including the Zero and One opcodes. 2904Evaluation of this parameter must eventually be converted to a full TermArg 2905evaluation. A not-implemented error is now returned (temporarily) for non- 2906constant values for this parameter. 2907 2908Fixed problem reports (Fiodor Suietov) integrated: 2909- Fix for premature object deletion after CopyObject on Operation Region (BZ 2910350) 2911 2912Example Code and Data Size: These are the sizes for the OS-independent 2913acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2914debug version of the code includes the debug output trace mechanism and has 2915a much larger code and data size. 2916 2917 Previous Release: 2918 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2919 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2920 Current Release: 2921 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2922 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2923 2924 29252) iASL Compiler/Disassembler and Tools: 2926 2927No changes for this release. 2928 2929---------------------------------------- 293007 July 2006. Summary of changes for version 20060707: 2931 29321) ACPI CA Core Subsystem: 2933 2934Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2935that do not allow the initialization of address pointers within packed 2936structures - even though the hardware itself may support misaligned 2937transfers. Some of the debug data structures are packed by default to 2938minimize size. 2939 2940Added an error message for the case where AcpiOsGetThreadId() returns zero. 2941A non-zero value is required by the core ACPICA code to ensure the proper 2942operation of AML mutexes and recursive control methods. 2943 2944The DSDT is now the only ACPI table that determines whether the AML 2945interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2946the hooks for per-table 32/64 switching have been removed from the code. A 2947clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2948 2949Fixed a possible leak of an OwnerID in the error path of 2950AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2951deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2952when using the AcpiTbDeleteTablesByType interface (with assistance from 2953Lance Ortiz.) 2954 2955Fixed a problem with Serialized control methods where the semaphore 2956associated with the method could be over-signaled after multiple method 2957invocations. 2958 2959Fixed two issues with the locking of the internal namespace data structure. 2960Both the Unload() operator and AcpiUnloadTable interface now lock the 2961namespace during the namespace deletion associated with the table unload 2962(with assistance from Linn Crosetto.) 2963 2964Fixed problem reports (Valery Podrezov) integrated: 2965- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2966 2967Fixed problem reports (Fiodor Suietov) integrated: 2968- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2969- On Address Space handler deletion, needless deactivation call (BZ 374) 2970- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2971- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2972(BZ 376) 2973- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2974- Minimum Length of RSDT should be validated (BZ 379) 2975- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2976Handler (BZ (380) 2977- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2978(BZ 381) 2979 2980Example Code and Data Size: These are the sizes for the OS-independent 2981acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2982debug version of the code includes the debug output trace mechanism and has 2983a much larger code and data size. 2984 2985 Previous Release: 2986 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2987 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2988 Current Release: 2989 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2990 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2991 2992 29932) iASL Compiler/Disassembler and Tools: 2994 2995Fixed problem reports: 2996Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2997436) 2998 2999---------------------------------------- 300023 June 2006. Summary of changes for version 20060623: 3001 30021) ACPI CA Core Subsystem: 3003 3004Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 3005allows the type to be customized to the host OS for improved efficiency 3006(since a spinlock is usually a very small object.) 3007 3008Implemented support for "ignored" bits in the ACPI registers. According to 3009the ACPI specification, these bits should be preserved when writing the 3010registers via a read/modify/write cycle. There are 3 bits preserved in this 3011manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 3012 3013Implemented the initial deployment of new OSL mutex interfaces. Since some 3014host operating systems have separate mutex and semaphore objects, this 3015feature was requested. The base code now uses mutexes (and the new mutex 3016interfaces) wherever a binary semaphore was used previously. However, for 3017the current release, the mutex interfaces are defined as macros to map them 3018to the existing semaphore interfaces. Therefore, no OSL changes are required 3019at this time. (See acpiosxf.h) 3020 3021Fixed several problems with the support for the control method SyncLevel 3022parameter. The SyncLevel now works according to the ACPI specification and 3023in concert with the Mutex SyncLevel parameter, since the current SyncLevel 3024is a property of the executing thread. Mutual exclusion for control methods 3025is now implemented with a mutex instead of a semaphore. 3026 3027Fixed three instances of the use of the C shift operator in the bitfield 3028support code (exfldio.c) to avoid the use of a shift value larger than the 3029target data width. The behavior of C compilers is undefined in this case and 3030can cause unpredictable results, and therefore the case must be detected and 3031avoided. (Fiodor Suietov) 3032 3033Added an info message whenever an SSDT or OEM table is loaded dynamically 3034via the Load() or LoadTable() ASL operators. This should improve debugging 3035capability since it will show exactly what tables have been loaded (beyond 3036the tables present in the RSDT/XSDT.) 3037 3038Example Code and Data Size: These are the sizes for the OS-independent 3039acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3040debug version of the code includes the debug output trace mechanism and has 3041a much larger code and data size. 3042 3043 Previous Release: 3044 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3045 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3046 Current Release: 3047 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 3048 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 3049 3050 30512) iASL Compiler/Disassembler and Tools: 3052 3053No changes for this release. 3054 3055---------------------------------------- 305608 June 2006. Summary of changes for version 20060608: 3057 30581) ACPI CA Core Subsystem: 3059 3060Converted the locking mutex used for the ACPI hardware to a spinlock. This 3061change should eliminate all problems caused by attempting to acquire a 3062semaphore at interrupt level, and it means that all ACPICA external 3063interfaces that directly access the ACPI hardware can be safely called from 3064interrupt level. OSL code that implements the semaphore interfaces should be 3065able to eliminate any workarounds for being called at interrupt level. 3066 3067Fixed a regression introduced in 20060526 where the ACPI device 3068initialization could be prematurely aborted with an AE_NOT_FOUND if a device 3069did not have an optional _INI method. 3070 3071Fixed an IndexField issue where a write to the Data Register should be 3072limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 3073Fiodor Suietov) 3074 3075Fixed problem reports (Valery Podrezov) integrated: 3076- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 3077 3078Fixed problem reports (Fiodor Suietov) integrated: 3079- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 3080 3081Removed four global mutexes that were obsolete and were no longer being 3082used. 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: 80.0K Code, 17.7K Data, 97.7K Total 3091 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3092 Current Release: 3093 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 3094 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 3095 3096 30972) iASL Compiler/Disassembler and Tools: 3098 3099Fixed a fault when using -g option (get tables from registry) on Windows 3100machines. 3101 3102Fixed problem reports integrated: 3103- Generate error if CreateField NumBits parameter is zero. (BZ 405) 3104- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 3105Suietov) 3106- Global table revision override (-r) is ignored (BZ 413) 3107 3108---------------------------------------- 310926 May 2006. Summary of changes for version 20060526: 3110 31111) ACPI CA Core Subsystem: 3112 3113Restructured, flattened, and simplified the internal interfaces for 3114namespace object evaluation - resulting in smaller code, less CPU stack use, 3115and fewer interfaces. (With assistance from Mikhail Kouzmich) 3116 3117Fixed a problem with the CopyObject operator where the first parameter was 3118not typed correctly for the parser, interpreter, compiler, and disassembler. 3119Caused various errors and unexpected behavior. 3120 3121Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 3122produced incorrect results with some C compilers. Since the behavior of C 3123compilers when the shift value is larger than the datatype width is 3124apparently not well defined, the interpreter now detects this condition and 3125simply returns zero as expected in all such cases. (BZ 395) 3126 3127Fixed problem reports (Valery Podrezov) integrated: 3128- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 3129- Allow interpreter to handle nested method declarations (BZ 5361) 3130 3131Fixed problem reports (Fiodor Suietov) integrated: 3132- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 3133- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 3134- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 3135- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 3136- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 3137- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 3138- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 3139- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 3140- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 3141- Status of the Global Initialization Handler call not used (BZ 366) 3142- Incorrect object parameter to Global Initialization Handler (BZ 367) 3143 3144Example Code and Data Size: These are the sizes for the OS-independent 3145acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3146debug version of the code includes the debug output trace mechanism and has 3147a much larger code and data size. 3148 3149 Previous Release: 3150 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3151 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3152 Current Release: 3153 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 3154 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 3155 3156 31572) iASL Compiler/Disassembler and Tools: 3158 3159Modified the parser to allow the names IO, DMA, and IRQ to be used as 3160namespace identifiers with no collision with existing resource descriptor 3161macro names. This provides compatibility with other ASL compilers and is 3162most useful for disassembly/recompilation of existing tables without parse 3163errors. (With assistance from Thomas Renninger) 3164 3165Disassembler: fixed an incorrect disassembly problem with the 3166DataTableRegion and CopyObject operators. Fixed a possible fault during 3167disassembly of some Alias operators. 3168 3169---------------------------------------- 317012 May 2006. Summary of changes for version 20060512: 3171 31721) ACPI CA Core Subsystem: 3173 3174Replaced the AcpiOsQueueForExecution interface with a new interface named 3175AcpiOsExecute. The major difference is that the new interface does not have 3176a Priority parameter, this appeared to be useless and has been replaced by a 3177Type parameter. The Type tells the host what type of execution is being 3178requested, such as global lock handler, notify handler, GPE handler, etc. 3179This allows the host to queue and execute the request as appropriate for the 3180request type, possibly using different work queues and different priorities 3181for the various request types. This enables fixes for multithreading 3182deadlock problems such as BZ #5534, and will require changes to all existing 3183OS interface layers. (Alexey Starikovskiy and Bob Moore) 3184 3185Fixed a possible memory leak associated with the support for the so-called 3186"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 3187Suietov) 3188 3189Fixed a problem with the Load() operator where a table load from an 3190operation region could overwrite an internal table buffer by up to 7 bytes 3191and cause alignment faults on IPF systems. (With assistance from Luming Yu) 3192 3193Example Code and Data Size: These are the sizes for the OS-independent 3194acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3195debug version of the code includes the debug output trace mechanism and has 3196a much larger code and data size. 3197 3198 Previous Release: 3199 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3200 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3201 Current Release: 3202 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 3203 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 3204 3205 3206 32072) iASL Compiler/Disassembler and Tools: 3208 3209Disassembler: Implemented support to cross reference the internal namespace 3210and automatically generate ASL External() statements for symbols not defined 3211within the current table being disassembled. This will simplify the 3212disassembly and recompilation of interdependent tables such as SSDTs since 3213these statements will no longer have to be added manually. 3214 3215Disassembler: Implemented experimental support to automatically detect 3216invocations of external control methods and generate appropriate External() 3217statements. This is problematic because the AML cannot be correctly parsed 3218until the number of arguments for each control method is known. Currently, 3219standalone method invocations and invocations as the source operand of a 3220Store() statement are supported. 3221 3222Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 3223LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 3224LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 3225more readable and likely closer to the original ASL source. 3226 3227---------------------------------------- 322821 April 2006. Summary of changes for version 20060421: 3229 32301) ACPI CA Core Subsystem: 3231 3232Removed a device initialization optimization introduced in 20051216 where 3233the _STA method was not run unless an _INI was also present for the same 3234device. This optimization could cause problems because it could allow _INI 3235methods to be run within a not-present device subtree. (If a not-present 3236device had no _INI, _STA would not be run, the not-present status would not 3237be discovered, and the children of the device would be incorrectly 3238traversed.) 3239 3240Implemented a new _STA optimization where namespace subtrees that do not 3241contain _INI are identified and ignored during device initialization. 3242Selectively running _STA can significantly improve boot time on large 3243machines (with assistance from Len Brown.) 3244 3245Implemented support for the device initialization case where the returned 3246_STA flags indicate a device not-present but functioning. In this case, _INI 3247is not run, but the device children are examined for presence, as per the 3248ACPI specification. 3249 3250Implemented an additional change to the IndexField support in order to 3251conform to MS behavior. The value written to the Index Register is not 3252simply a byte offset, it is a byte offset in units of the access width of 3253the parent Index Field. (Fiodor Suietov) 3254 3255Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 3256interface is called during the creation of all AML operation regions, and 3257allows the host OS to exert control over what addresses it will allow the 3258AML code to access. Operation Regions whose addresses are disallowed will 3259cause a runtime exception when they are actually accessed (will not affect 3260or abort table loading.) See oswinxf or osunixxf for an example 3261implementation. 3262 3263Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 3264interface allows the host OS to match the various "optional" 3265interface/behavior strings for the _OSI predefined control method as 3266appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 3267for an example implementation. 3268 3269Restructured and corrected various problems in the exception handling code 3270paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 3271(with assistance from Takayoshi Kochi.) 3272 3273Modified the Linux source converter to ignore quoted string literals while 3274converting identifiers from mixed to lower case. This will correct problems 3275with the disassembler and other areas where such strings must not be 3276modified. 3277 3278The ACPI_FUNCTION_* macros no longer require quotes around the function 3279name. This allows the Linux source converter to convert the names, now that 3280the converter ignores quoted strings. 3281 3282Example Code and Data Size: These are the sizes for the OS-independent 3283acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3284debug version of the code includes the debug output trace mechanism and has 3285a much larger code and data size. 3286 3287 Previous Release: 3288 3289 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3290 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3291 Current Release: 3292 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 3293 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 3294 3295 32962) iASL Compiler/Disassembler and Tools: 3297 3298Implemented 3 new warnings for iASL, and implemented multiple warning levels 3299(w2 flag). 3300 33011) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 3302WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 3303check for the possible timeout, a warning is issued. 3304 33052) Useless operators: If an ASL operator does not specify an optional target 3306operand and it also does not use the function return value from the 3307operator, a warning is issued since the operator effectively does nothing. 3308 33093) Unreferenced objects: If a namespace object is created, but never 3310referenced, a warning is issued. This is a warning level 2 since there are 3311cases where this is ok, such as when a secondary table is loaded that uses 3312the unreferenced objects. Even so, care is taken to only flag objects that 3313don't look like they will ever be used. For example, the reserved methods 3314(starting with an underscore) are usually not referenced because it is 3315expected that the OS will invoke them. 3316 3317---------------------------------------- 331831 March 2006. Summary of changes for version 20060331: 3319 33201) ACPI CA Core Subsystem: 3321 3322Implemented header file support for the following additional ACPI tables: 3323ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 3324all current and known ACPI tables are now defined in the ACPICA headers and 3325are available for use by device drivers and other software. 3326 3327Implemented support to allow tables that contain ACPI names with invalid 3328characters to be loaded. Previously, this would cause the table load to 3329fail, but since there are several known cases of such tables on existing 3330machines, this change was made to enable ACPI support for them. Also, this 3331matches the behavior of the Microsoft ACPI implementation. 3332 3333Fixed a couple regressions introduced during the memory optimization in the 333420060317 release. The namespace node definition required additional 3335reorganization and an internal datatype that had been changed to 8-bit was 3336restored to 32-bit. (Valery Podrezov) 3337 3338Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 3339could be passed through to AcpiOsReleaseObject which is unexpected. Such 3340null pointers are now trapped and ignored, matching the behavior of the 3341previous implementation before the deployment of AcpiOsReleaseObject. 3342(Valery Podrezov, Fiodor Suietov) 3343 3344Fixed a memory mapping leak during the deletion of a SystemMemory operation 3345region where a cached memory mapping was not deleted. This became a 3346noticeable problem for operation regions that are defined within frequently 3347used control methods. (Dana Meyers) 3348 3349Reorganized the ACPI table header files into two main files: one for the 3350ACPI tables consumed by the ACPICA core, and another for the miscellaneous 3351ACPI tables that are consumed by the drivers and other software. The various 3352FADT definitions were merged into one common section and three different 3353tables (ACPI 1.0, 1.0+, and 2.0) 3354 3355Example Code and Data Size: These are the sizes for the OS-independent 3356acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 3357debug version of the code includes the debug output trace mechanism and has 3358a much larger code and data size. 3359 3360 Previous Release: 3361 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3362 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3363 Current Release: 3364 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 3365 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 3366 3367 33682) iASL Compiler/Disassembler and Tools: 3369 3370Disassembler: Implemented support to decode and format all non-AML ACPI 3371tables (tables other than DSDTs and SSDTs.) This includes the new tables 3372added to the ACPICA headers, therefore all current and known ACPI tables are 3373supported. 3374 3375Disassembler: The change to allow ACPI names with invalid characters also 3376enables the disassembly of such tables. Invalid characters within names are 3377changed to '*' to make the name printable; the iASL compiler will still 3378generate an error for such names, however, since this is an invalid ACPI 3379character. 3380 3381Implemented an option for AcpiXtract (-a) to extract all tables found in the 3382input file. The default invocation extracts only the DSDTs and SSDTs. 3383 3384Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 3385makefile for the AcpiXtract utility. 3386 3387---------------------------------------- 338817 March 2006. Summary of changes for version 20060317: 3389 33901) ACPI CA Core Subsystem: 3391 3392Implemented the use of a cache object for all internal namespace nodes. 3393Since there are about 1000 static nodes in a typical system, this will 3394decrease memory use for cache implementations that minimize per-allocation 3395overhead (such as a slab allocator.) 3396 3397Removed the reference count mechanism for internal namespace nodes, since it 3398was deemed unnecessary. This reduces the size of each namespace node by 3399about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 3400and 32 bytes for the 64-bit case. 3401 3402Optimized several internal data structures to reduce object size on 64-bit 3403platforms by packing data within the 64-bit alignment. This includes the 3404frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 3405instances corresponding to the namespace objects. 3406 3407Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 3408and "Windows 2006". 3409 3410Split the allocation tracking mechanism out to a separate file, from 3411utalloc.c to uttrack.c. This mechanism appears to be only useful for 3412application-level code. Kernels may wish to not include uttrack.c in 3413distributions. 3414 3415Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3416code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3417macros.) 3418 3419Code and Data Size: These are the sizes for the acpica.lib produced by the 3420Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3421driver or OSPM code. The debug version of the code includes the debug output 3422trace mechanism and has a much larger code and data size. Note that these 3423values will vary depending on the efficiency of the compiler and the 3424compiler options used during generation. 3425 3426 Previous Release: 3427 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3428 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3429 Current Release: 3430 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3431 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3432 3433 34342) iASL Compiler/Disassembler and Tools: 3435 3436Implemented an ANSI C version of the acpixtract utility. This version will 3437automatically extract the DSDT and all SSDTs from the input acpidump text 3438file and dump the binary output to separate files. It can also display a 3439summary of the input file including the headers for each table found and 3440will extract any single ACPI table, with any signature. (See 3441source/tools/acpixtract) 3442 3443---------------------------------------- 344410 March 2006. Summary of changes for version 20060310: 3445 34461) ACPI CA Core Subsystem: 3447 3448Tagged all external interfaces to the subsystem with the new 3449ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3450kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3451macro. The default definition is NULL. 3452 3453Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3454This allows the host to define this as necessary to simplify kernel 3455integration. The default definition is ACPI_NATIVE_UINT. 3456 3457Fixed two interpreter problems related to error processing, the deletion of 3458objects, and placing invalid pointers onto the internal operator result 3459stack. BZ 6028, 6151 (Valery Podrezov) 3460 3461Increased the reference count threshold where a warning is emitted for large 3462reference counts in order to eliminate unnecessary warnings on systems with 3463large namespaces (especially 64-bit.) Increased the value from 0x400 to 34640x800. 3465 3466Due to universal disagreement as to the meaning of the 'c' in the calloc() 3467function, the ACPI_MEM_CALLOCATE macro has been renamed to 3468ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3469ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3470ACPI_FREE. 3471 3472Code and Data Size: These are the sizes for the acpica.lib produced by the 3473Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3474driver or OSPM code. The debug version of the code includes the debug output 3475trace mechanism and has a much larger code and data size. Note that these 3476values will vary depending on the efficiency of the compiler and the 3477compiler options used during generation. 3478 3479 Previous 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 Current Release: 3483 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3484 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3485 3486 34872) iASL Compiler/Disassembler: 3488 3489Disassembler: implemented support for symbolic resource descriptor 3490references. If a CreateXxxxField operator references a fixed offset within a 3491resource descriptor, a name is assigned to the descriptor and the offset is 3492translated to the appropriate resource tag and pathname. The addition of 3493this support brings the disassembled code very close to the original ASL 3494source code and helps eliminate run-time errors when the disassembled code 3495is modified (and recompiled) in such a way as to invalidate the original 3496fixed offsets. 3497 3498Implemented support for a Descriptor Name as the last parameter to the ASL 3499Register() macro. This parameter was inadvertently left out of the ACPI 3500specification, and will be added for ACPI 3.0b. 3501 3502Fixed a problem where the use of the "_OSI" string (versus the full path 3503"\_OSI") caused an internal compiler error. ("No back ptr to op") 3504 3505Fixed a problem with the error message that occurs when an invalid string is 3506used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3507The correct message is now displayed. 3508 3509---------------------------------------- 351017 February 2006. Summary of changes for version 20060217: 3511 35121) ACPI CA Core Subsystem: 3513 3514Implemented a change to the IndexField support to match the behavior of the 3515Microsoft AML interpreter. The value written to the Index register is now a 3516byte offset, no longer an index based upon the width of the Data register. 3517This should fix IndexField problems seen on some machines where the Data 3518register is not exactly one byte wide. The ACPI specification will be 3519clarified on this point. 3520 3521Fixed a problem where several resource descriptor types could overrun the 3522internal descriptor buffer due to size miscalculation: VendorShort, 3523VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3524affect all platforms. 3525 3526Fixed a problem where individual resource descriptors were misaligned within 3527the internal buffer, causing alignment faults on IA64 platforms. 3528 3529Code and Data Size: These are the sizes for the acpica.lib produced by the 3530Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3531driver or OSPM code. The debug version of the code includes the debug output 3532trace mechanism and has a much larger code and data size. Note that these 3533values will vary depending on the efficiency of the compiler and the 3534compiler options used during generation. 3535 3536 Previous Release: 3537 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3538 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3539 Current Release: 3540 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3541 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3542 3543 35442) iASL Compiler/Disassembler: 3545 3546Implemented support for new reserved names: _WDG and _WED are Microsoft 3547extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3548defined method (Throttling Depth Limit.) 3549 3550Fixed a problem where a zero-length VendorShort or VendorLong resource 3551descriptor was incorrectly emitted as a descriptor of length one. 3552 3553---------------------------------------- 355410 February 2006. Summary of changes for version 20060210: 3555 35561) ACPI CA Core Subsystem: 3557 3558Removed a couple of extraneous ACPI_ERROR messages that appeared during 3559normal execution. These became apparent after the conversion from 3560ACPI_DEBUG_PRINT. 3561 3562Fixed a problem where the CreateField operator could hang if the BitIndex or 3563NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3564 3565Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3566failed with an exception. This also fixes a couple of related RefOf and 3567DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3568 3569Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3570AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 35715480) 3572 3573Implemented a memory cleanup at the end of the execution of each iteration 3574of an AML While() loop, preventing the accumulation of outstanding objects. 3575(Valery Podrezov, BZ 5427) 3576 3577Eliminated a chunk of duplicate code in the object resolution code. (Valery 3578Podrezov, BZ 5336) 3579 3580Fixed several warnings during the 64-bit code generation. 3581 3582The AcpiSrc source code conversion tool now inserts one line of whitespace 3583after an if() statement that is followed immediately by a comment, improving 3584readability of the Linux code. 3585 3586Code and Data Size: The current and previous library sizes for the core 3587subsystem are shown below. These are the code and data sizes for the 3588acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3589values do not include any ACPI driver or OSPM code. The debug version of the 3590code includes the debug output trace mechanism and has a much larger code 3591and data size. Note that these values will vary depending on the efficiency 3592of the compiler and the compiler options used during generation. 3593 3594 Previous Release: 3595 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3596 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3597 Current Release: 3598 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3599 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3600 3601 36022) iASL Compiler/Disassembler: 3603 3604Fixed a problem with the disassembly of a BankField operator with a complex 3605expression for the BankValue parameter. 3606 3607---------------------------------------- 360827 January 2006. Summary of changes for version 20060127: 3609 36101) ACPI CA Core Subsystem: 3611 3612Implemented support in the Resource Manager to allow unresolved namestring 3613references within resource package objects for the _PRT method. This support 3614is in addition to the previously implemented unresolved reference support 3615within the AML parser. If the interpreter slack mode is enabled, these 3616unresolved references will be passed through to the caller as a NULL package 3617entry. 3618 3619Implemented and deployed new macros and functions for error and warning 3620messages across the subsystem. These macros are simpler and generate less 3621code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3622ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3623macros remain defined to allow ACPI drivers time to migrate to the new 3624macros. 3625 3626Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3627Acquire/Release Lock OSL interfaces. 3628 3629Fixed a problem where Alias ASL operators are sometimes not correctly 3630resolved, in both the interpreter and the iASL compiler. 3631 3632Fixed several problems with the implementation of the ConcatenateResTemplate 3633ASL operator. As per the ACPI specification, zero length buffers are now 3634treated as a single EndTag. One-length buffers always cause a fatal 3635exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3636cause a fatal exception. 3637 3638Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3639interface. (With assistance from Thomas Renninger) 3640 3641Code and Data Size: The current and previous library sizes for the core 3642subsystem are shown below. These are the code and data sizes for the 3643acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3644values do not include any ACPI driver or OSPM code. The debug version of the 3645code includes the debug output trace mechanism and has a much larger code 3646and data size. Note that these values will vary depending on the efficiency 3647of the compiler and the compiler options used during generation. 3648 3649 Previous Release: 3650 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3651 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3652 Current Release: 3653 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3654 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3655 3656 36572) iASL Compiler/Disassembler: 3658 3659Fixed an internal error that was generated for any forward references to ASL 3660Alias objects. 3661 3662---------------------------------------- 366313 January 2006. Summary of changes for version 20060113: 3664 36651) ACPI CA Core Subsystem: 3666 3667Added 2006 copyright to all module headers and signons. This affects 3668virtually every file in the ACPICA core subsystem, iASL compiler, and the 3669utilities. 3670 3671Enhanced the ACPICA error reporting in order to simplify user migration to 3672the non-debug version of ACPICA. Replaced all instances of the 3673ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3674levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3675respectively. This preserves all error and warning messages in the non-debug 3676version of the ACPICA code (this has been referred to as the "debug lite" 3677option.) Over 200 cases were converted to create a total of over 380 3678error/warning messages across the ACPICA code. This increases the code and 3679data size of the default non-debug version of the code somewhat (about 13K), 3680but all error/warning reporting may be disabled if desired (and code 3681eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3682configuration option. The size of the debug version of ACPICA remains about 3683the same. 3684 3685Fixed a memory leak within the AML Debugger "Set" command. One object was 3686not properly deleted for every successful invocation of the command. 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: 76.6K Code, 12.3K Data, 88.9K Total 3698 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3699 Current Release: 3700 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3701 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3702 3703 37042) iASL Compiler/Disassembler: 3705 3706The compiler now officially supports the ACPI 3.0a specification that was 3707released on December 30, 2005. (Specification is available at www.acpi.info) 3708 3709---------------------------------------- 371016 December 2005. Summary of changes for version 20051216: 3711 37121) ACPI CA Core Subsystem: 3713 3714Implemented optional support to allow unresolved names within ASL Package 3715objects. A null object is inserted in the package when a named reference 3716cannot be located in the current namespace. Enabled via the interpreter 3717slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3718that contain such code. 3719 3720Implemented an optimization to the initialization sequence that can improve 3721boot time. During ACPI device initialization, the _STA method is now run if 3722and only if the _INI method exists. The _STA method is used to determine if 3723the device is present; An _INI can only be run if _STA returns present, but 3724it is a waste of time to run the _STA method if the _INI does not exist. 3725(Prototype and assistance from Dong Wei) 3726 3727Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3728available in the current compiler. Otherwise, the default (void *) cast is 3729used as before. 3730 3731Fixed some possible memory leaks found within the execution path of the 3732Break, Continue, If, and CreateField operators. (Valery Podrezov) 3733 3734Fixed a problem introduced in the 20051202 release where an exception is 3735generated during method execution if a control method attempts to declare 3736another method. 3737 3738Moved resource descriptor string constants that are used by both the AML 3739disassembler and AML debugger to the common utilities directory so that 3740these components are independent. 3741 3742Implemented support in the AcpiExec utility (-e switch) to globally ignore 3743exceptions during control method execution (method is not aborted.) 3744 3745Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3746generation. 3747 3748Code and Data Size: The current and previous library sizes for the core 3749subsystem are shown below. These are the code and data sizes for the 3750acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3751values do not include any ACPI driver or OSPM code. The debug version of the 3752code includes the debug output trace mechanism and has a much larger code 3753and data size. Note that these values will vary depending on the efficiency 3754of the compiler and the compiler options used during generation. 3755 3756 Previous Release: 3757 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3758 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3759 Current Release: 3760 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3761 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3762 3763 37642) iASL Compiler/Disassembler: 3765 3766Fixed a problem where a CPU stack overflow fault could occur if a recursive 3767method call was made from within a Return statement. 3768 3769---------------------------------------- 377002 December 2005. Summary of changes for version 20051202: 3771 37721) ACPI CA Core Subsystem: 3773 3774Modified the parsing of control methods to no longer create namespace 3775objects during the first pass of the parse. Objects are now created only 3776during the execute phase, at the moment the namespace creation operator is 3777encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3778should eliminate ALREADY_EXISTS exceptions seen on some machines where 3779reentrant control methods are protected by an AML mutex. The mutex will now 3780correctly block multiple threads from attempting to create the same object 3781more than once. 3782 3783Increased the number of available Owner Ids for namespace object tracking 3784from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3785some machines with a large number of ACPI tables (either static or dynamic). 3786 3787Fixed a problem with the AcpiExec utility where a fault could occur when the 3788-b switch (batch mode) is used. 3789 3790Enhanced the namespace dump routine to output the owner ID for each 3791namespace object. 3792 3793Code and Data Size: The current and previous library sizes for the core 3794subsystem are shown below. These are the code and data sizes for the 3795acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3796values do not include any ACPI driver or OSPM code. The debug version of the 3797code includes the debug output trace mechanism and has a much larger code 3798and data size. Note that these values will vary depending on the efficiency 3799of the compiler and the compiler options used during generation. 3800 3801 Previous Release: 3802 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3803 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3804 Current Release: 3805 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3806 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3807 3808 38092) iASL Compiler/Disassembler: 3810 3811Fixed a parse error during compilation of certain Switch/Case constructs. To 3812simplify the parse, the grammar now allows for multiple Default statements 3813and this error is now detected and flagged during the analysis phase. 3814 3815Disassembler: The disassembly now includes the contents of the original 3816table header within a comment at the start of the file. This includes the 3817name and version of the original ASL compiler. 3818 3819---------------------------------------- 382017 November 2005. Summary of changes for version 20051117: 3821 38221) ACPI CA Core Subsystem: 3823 3824Fixed a problem in the AML parser where the method thread count could be 3825decremented below zero if any errors occurred during the method parse phase. 3826This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3827This also fixed a related regression with the mechanism that detects and 3828corrects methods that cannot properly handle reentrancy (related to the 3829deployment of the new OwnerId mechanism.) 3830 3831Eliminated the pre-parsing of control methods (to detect errors) during 3832table load. Related to the problem above, this was causing unwind issues if 3833any errors occurred during the parse, and it seemed to be overkill. A table 3834load should not be aborted if there are problems with any single control 3835method, thus rendering this feature rather pointless. 3836 3837Fixed a problem with the new table-driven resource manager where an internal 3838buffer overflow could occur for small resource templates. 3839 3840Implemented a new external interface, AcpiGetVendorResource. This interface 3841will find and return a vendor-defined resource descriptor within a _CRS or 3842_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3843 3844Removed the length limit (200) on string objects as per the upcoming ACPI 38453.0A specification. This affects the following areas of the interpreter: 1) 3846any implicit conversion of a Buffer to a String, 2) a String object result 3847of the ASL Concatentate operator, 3) the String object result of the ASL 3848ToString operator. 3849 3850Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3851on a semaphore object would incorrectly timeout. This allows the 3852multithreading features of the AcpiExec utility to work properly under 3853Windows. 3854 3855Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3856the recently added file named "utresrc.c". 3857 3858Code and Data Size: The current and previous library sizes for the core 3859subsystem are shown below. These are the code and data sizes for the 3860acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3861values do not include any ACPI driver or OSPM code. The debug version of the 3862code includes the debug output trace mechanism and has a much larger code 3863and data size. Note that these values will vary depending on the efficiency 3864of the compiler and the compiler options used during generation. 3865 3866 Previous 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 Current Release: 3870 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3871 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3872 3873 38742) iASL Compiler/Disassembler: 3875 3876Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3877specification. For the iASL compiler, this means that string literals within 3878the source ASL can be of any length. 3879 3880Enhanced the listing output to dump the AML code for resource descriptors 3881immediately after the ASL code for each descriptor, instead of in a block at 3882the end of the entire resource template. 3883 3884Enhanced the compiler debug output to dump the entire original parse tree 3885constructed during the parse phase, before any transforms are applied to the 3886tree. The transformed tree is dumped also. 3887 3888---------------------------------------- 388902 November 2005. Summary of changes for version 20051102: 3890 38911) ACPI CA Core Subsystem: 3892 3893Modified the subsystem initialization sequence to improve GPE support. The 3894GPE initialization has been split into two parts in order to defer execution 3895of the _PRW methods (Power Resources for Wake) until after the hardware is 3896fully initialized and the SCI handler is installed. This allows the _PRW 3897methods to access fields protected by the Global Lock. This will fix systems 3898where a NO_GLOBAL_LOCK exception has been seen during initialization. 3899 3900Converted the ACPI internal object disassemble and display code within the 3901AML debugger to fully table-driven operation, reducing code size and 3902increasing maintainability. 3903 3904Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3905in the 20051021 release. 3906 3907Implemented support for "local" internal ACPI object types within the 3908debugger "Object" command and the AcpiWalkNamespace external interfaces. 3909These local types include RegionFields, BankFields, IndexFields, Alias, and 3910reference objects. 3911 3912Moved common AML resource handling code into a new file, "utresrc.c". This 3913code is shared by both the Resource Manager and the AML Debugger. 3914 3915Code and Data Size: The current and previous library sizes for the core 3916subsystem are shown below. These are the code and data sizes for the 3917acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3918values do not include any ACPI driver or OSPM code. The debug version of the 3919code includes the debug output trace mechanism and has a much larger code 3920and data size. Note that these values will vary depending on the efficiency 3921of the compiler and the compiler options used during generation. 3922 3923 Previous Release: 3924 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3925 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3926 Current Release: 3927 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3928 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3929 3930 39312) iASL Compiler/Disassembler: 3932 3933Fixed a problem with very large initializer lists (more than 4000 elements) 3934for both Buffer and Package objects where the parse stack could overflow. 3935 3936Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3937characters within comment fields. The scan is now always performed and is no 3938longer optional, detecting invalid characters within a source file 3939immediately rather than during the parse phase or later. 3940 3941Enhanced the ASL grammar definition to force early reductions on all list- 3942style grammar elements so that the overall parse stack usage is greatly 3943reduced. This should improve performance and reduce the possibility of parse 3944stack overflow. 3945 3946Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3947with the addition of a %expected statement, the compiler generates from 3948source with no warnings. 3949 3950Fixed a possible segment fault in the disassembler if the input filename 3951does not contain a "dot" extension (Thomas Renninger). 3952 3953---------------------------------------- 395421 October 2005. Summary of changes for version 20051021: 3955 39561) ACPI CA Core Subsystem: 3957 3958Implemented support for the EM64T and other x86-64 processors. This 3959essentially entails recognizing that these processors support non-aligned 3960memory transfers. Previously, all 64-bit processors were assumed to lack 3961hardware support for non-aligned transfers. 3962 3963Completed conversion of the Resource Manager to nearly full table-driven 3964operation. Specifically, the resource conversion code (convert AML to 3965internal format and the reverse) and the debug code to dump internal 3966resource descriptors are fully table-driven, reducing code and data size and 3967improving maintainability. 3968 3969The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3970on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3971Alexey Starikovskiy) 3972 3973Implemented support within the resource conversion code for the Type- 3974Specific byte within the various ACPI 3.0 *WordSpace macros. 3975 3976Fixed some issues within the resource conversion code for the type-specific 3977flags for both Memory and I/O address resource descriptors. For Memory, 3978implemented support for the MTP and TTP flags. For I/O, split the TRS and 3979TTP flags into two separate fields. 3980 3981Code and Data Size: The current and previous library sizes for the core 3982subsystem are shown below. These are the code and data sizes for the 3983acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3984values do not include any ACPI driver or OSPM code. The debug version of the 3985code includes the debug output trace mechanism and has a much larger code 3986and data size. Note that these values will vary depending on the efficiency 3987of the compiler and the compiler options used during generation. 3988 3989 Previous Release: 3990 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3991 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3992 Current Release: 3993 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3994 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3995 3996 3997 39982) iASL Compiler/Disassembler: 3999 4000Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 4001corresponding ResourceSource string was not also present in a resource 4002descriptor declaration. This restriction caused problems with existing 4003AML/ASL code that includes the Index byte without the string. When such AML 4004was disassembled, it could not be compiled without modification. Further, 4005the modified code created a resource template with a different size than the 4006original, breaking code that used fixed offsets into the resource template 4007buffer. 4008 4009Removed a recent feature of the disassembler to ignore a lone ResourceIndex 4010byte. This byte is now emitted if present so that the exact AML can be 4011reproduced when the disassembled code is recompiled. 4012 4013Improved comments and text alignment for the resource descriptor code 4014emitted by the disassembler. 4015 4016Implemented disassembler support for the ACPI 3.0 AccessSize field within a 4017Register() resource descriptor. 4018 4019---------------------------------------- 402030 September 2005. Summary of changes for version 20050930: 4021 40221) ACPI CA Core Subsystem: 4023 4024Completed a major overhaul of the Resource Manager code - specifically, 4025optimizations in the area of the AML/internal resource conversion code. The 4026code has been optimized to simplify and eliminate duplicated code, CPU stack 4027use has been decreased by optimizing function parameters and local 4028variables, and naming conventions across the manager have been standardized 4029for clarity and ease of maintenance (this includes function, parameter, 4030variable, and struct/typedef names.) The update may force changes in some 4031driver code, depending on how resources are handled by the host OS. 4032 4033All Resource Manager dispatch and information tables have been moved to a 4034single location for clarity and ease of maintenance. One new file was 4035created, named "rsinfo.c". 4036 4037The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 4038guarantee that the argument is not evaluated twice, making them less prone 4039to macro side-effects. However, since there exists the possibility of 4040additional stack use if a particular compiler cannot optimize them (such as 4041in the debug generation case), the original macros are optionally available. 4042Note that some invocations of the return_VALUE macro may now cause size 4043mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 4044eliminate these. (From Randy Dunlap) 4045 4046Implemented a new mechanism to enable debug tracing for individual control 4047methods. A new external interface, AcpiDebugTrace, is provided to enable 4048this mechanism. The intent is to allow the host OS to easily enable and 4049disable tracing for problematic control methods. This interface can be 4050easily exposed to a user or debugger interface if desired. See the file 4051psxface.c for details. 4052 4053AcpiUtCallocate will now return a valid pointer if a length of zero is 4054specified - a length of one is used and a warning is issued. This matches 4055the behavior of AcpiUtAllocate. 4056 4057Code and Data Size: The current and previous library sizes for the core 4058subsystem are shown below. These are the code and data sizes for the 4059acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4060values do not include any ACPI driver or OSPM code. The debug version of the 4061code includes the debug output trace mechanism and has a much larger code 4062and data size. Note that these values will vary depending on the efficiency 4063of the compiler and the compiler options used during generation. 4064 4065 Previous Release: 4066 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4067 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4068 Current Release: 4069 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 4070 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 4071 4072 40732) iASL Compiler/Disassembler: 4074 4075A remark is issued if the effective compile-time length of a package or 4076buffer is zero. Previously, this was a warning. 4077 4078---------------------------------------- 407916 September 2005. Summary of changes for version 20050916: 4080 40811) ACPI CA Core Subsystem: 4082 4083Fixed a problem within the Resource Manager where support for the Generic 4084Register descriptor was not fully implemented. This descriptor is now fully 4085recognized, parsed, disassembled, and displayed. 4086 4087Completely restructured the Resource Manager code to utilize table-driven 4088dispatch and lookup, eliminating many of the large switch() statements. This 4089reduces overall subsystem code size and code complexity. Affects the 4090resource parsing and construction, disassembly, and debug dump output. 4091 4092Cleaned up and restructured the debug dump output for all resource 4093descriptors. Improved readability of the output and reduced code size. 4094 4095Fixed a problem where changes to internal data structures caused the 4096optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 4097 4098Code and Data Size: The current and previous library sizes for the core 4099subsystem are shown below. These are the code and data sizes for the 4100acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 4101values do not include any ACPI driver or OSPM code. The debug version of the 4102code includes the debug output trace mechanism and has a much larger code 4103and data size. Note that these values will vary depending on the efficiency 4104of the compiler and the compiler options used during generation. 4105 4106 Previous 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 Current Release: 4110 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 4111 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 4112 4113 41142) iASL Compiler/Disassembler: 4115 4116Updated the disassembler to automatically insert an EndDependentFn() macro 4117into the ASL stream if this macro is missing in the original AML code, 4118simplifying compilation of the resulting ASL module. 4119 4120Fixed a problem in the disassembler where a disassembled ResourceSource 4121string (within a large resource descriptor) was not surrounded by quotes and 4122not followed by a comma, causing errors when the resulting ASL module was 4123compiled. Also, escape sequences within a ResourceSource string are now 4124handled correctly (especially "\\") 4125 4126---------------------------------------- 412702 September 2005. Summary of changes for version 20050902: 4128 41291) ACPI CA Core Subsystem: 4130 4131Fixed a problem with the internal Owner ID allocation and deallocation 4132mechanisms for control method execution and recursive method invocation. 4133This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 4134messages seen on some systems. Recursive method invocation depth is 4135currently limited to 255. (Alexey Starikovskiy) 4136 4137Completely eliminated all vestiges of support for the "module-level 4138executable code" until this support is fully implemented and debugged. This 4139should eliminate the NO_RETURN_VALUE exceptions seen during table load on 4140some systems that invoke this support. 4141 4142Fixed a problem within the resource manager code where the transaction flags 4143for a 64-bit address descriptor were handled incorrectly in the type- 4144specific flag byte. 4145 4146Consolidated duplicate code within the address descriptor resource manager 4147code, reducing overall subsystem code size. 4148 4149Fixed a fault when using the AML debugger "disassemble" command to 4150disassemble individual control methods. 4151 4152Removed references to the "release_current" directory within the Unix 4153release package. 4154 4155Code and Data Size: The current and previous core subsystem library sizes 4156are shown below. These are the code and data sizes for the acpica.lib 4157produced by the Microsoft Visual C++ 6.0 compiler. These values do not 4158include any ACPI driver or OSPM code. The debug version of the code includes 4159the debug output trace mechanism and has a much larger code and data size. 4160Note that these values will vary depending on the efficiency of the compiler 4161and the compiler options used during generation. 4162 4163 Previous Release: 4164 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4165 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4166 Current Release: 4167 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 4168 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 4169 4170 41712) iASL Compiler/Disassembler: 4172 4173Implemented an error check for illegal duplicate values in the interrupt and 4174dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 4175Interrupt(). 4176 4177Implemented error checking for the Irq() and IrqNoFlags() macros to detect 4178too many values in the interrupt list (16 max) and invalid values in the 4179list (range 0 - 15) 4180 4181The maximum length string literal within an ASL file is now restricted to 4182200 characters as per the ACPI specification. 4183 4184Fixed a fault when using the -ln option (generate namespace listing). 4185 4186Implemented an error check to determine if a DescriptorName within a 4187resource descriptor has already been used within the current scope. 4188 4189---------------------------------------- 419015 August 2005. Summary of changes for version 20050815: 4191 41921) ACPI CA Core Subsystem: 4193 4194Implemented a full bytewise compare to determine if a table load request is 4195attempting to load a duplicate table. The compare is performed if the table 4196signatures and table lengths match. This will allow different tables with 4197the same OEM Table ID and revision to be loaded - probably against the ACPI 4198specification, but discovered in the field nonetheless. 4199 4200Added the changes.txt logfile to each of the zipped release packages. 4201 4202Code and Data Size: Current and previous core subsystem library sizes are 4203shown below. These are the code and data sizes for the acpica.lib produced 4204by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4205any ACPI driver or OSPM code. The debug version of the code includes the 4206debug output trace mechanism and has a much larger code and data size. Note 4207that these values will vary depending on the efficiency of the compiler and 4208the compiler options used during generation. 4209 4210 Previous Release: 4211 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4212 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4213 Current Release: 4214 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4215 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 4216 4217 42182) iASL Compiler/Disassembler: 4219 4220Fixed a problem where incorrect AML code could be generated for Package 4221objects if optimization is disabled (via the -oa switch). 4222 4223Fixed a problem with where incorrect AML code is generated for variable- 4224length packages when the package length is not specified and the number of 4225initializer values is greater than 255. 4226 4227 4228---------------------------------------- 422929 July 2005. Summary of changes for version 20050729: 4230 42311) ACPI CA Core Subsystem: 4232 4233Implemented support to ignore an attempt to install/load a particular ACPI 4234table more than once. Apparently there exists BIOS code that repeatedly 4235attempts to load the same SSDT upon certain events. With assistance from 4236Venkatesh Pallipadi. 4237 4238Restructured the main interface to the AML parser in order to correctly 4239handle all exceptional conditions. This will prevent leakage of the OwnerId 4240resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 4241machines. With assistance from Alexey Starikovskiy. 4242 4243Support for "module level code" has been disabled in this version due to a 4244number of issues that have appeared on various machines. The support can be 4245enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 4246compilation. When the issues are fully resolved, the code will be enabled by 4247default again. 4248 4249Modified the internal functions for debug print support to define the 4250FunctionName parameter as a (const char *) for compatibility with compiler 4251built-in macros such as __FUNCTION__, etc. 4252 4253Linted the entire ACPICA source tree for both 32-bit and 64-bit. 4254 4255Implemented support to display an object count summary for the AML Debugger 4256commands Object and Methods. 4257 4258Code and Data Size: Current and previous core subsystem library sizes are 4259shown below. These are the code and data sizes for the acpica.lib produced 4260by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4261any ACPI driver or OSPM code. The debug version of the code includes the 4262debug output trace mechanism and has a much larger code and data size. Note 4263that these values will vary depending on the efficiency of the compiler and 4264the compiler options used during generation. 4265 4266 Previous Release: 4267 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4268 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4269 Current Release: 4270 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 4271 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 4272 4273 42742) iASL Compiler/Disassembler: 4275 4276Fixed a regression that appeared in the 20050708 version of the compiler 4277where an error message was inadvertently emitted for invocations of the _OSI 4278reserved control method. 4279 4280---------------------------------------- 428108 July 2005. Summary of changes for version 20050708: 4282 42831) ACPI CA Core Subsystem: 4284 4285The use of the CPU stack in the debug version of the subsystem has been 4286considerably reduced. Previously, a debug structure was declared in every 4287function that used the debug macros. This structure has been removed in 4288favor of declaring the individual elements as parameters to the debug 4289functions. This reduces the cumulative stack use during nested execution of 4290ACPI function calls at the cost of a small increase in the code size of the 4291debug version of the subsystem. With assistance from Alexey Starikovskiy and 4292Len Brown. 4293 4294Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 4295headers to define a macro that will return the current function name at 4296runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 4297the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 4298compiler-dependent header, the function name is saved on the CPU stack (one 4299pointer per function.) This mechanism is used because apparently there 4300exists no standard ANSI-C defined macro that that returns the function name. 4301 4302Redesigned and reimplemented the "Owner ID" mechanism used to track 4303namespace objects created/deleted by ACPI tables and control method 4304execution. A bitmap is now used to allocate and free the IDs, thus solving 4305the wraparound problem present in the previous implementation. The size of 4306the namespace node descriptor was reduced by 2 bytes as a result (Alexey 4307Starikovskiy). 4308 4309Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 4310flag definitions within the headers for the predefined ACPI tables. These 4311have been replaced by UINT8_BIT in order to increase the code portability of 4312the subsystem. If the use of UINT8 remains a problem, we may be forced to 4313eliminate bitfields entirely because of a lack of portability. 4314 4315Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 4316is a frequently used function and this improvement increases the performance 4317of the entire subsystem (Alexey Starikovskiy). 4318 4319Fixed several possible memory leaks and the inverse - premature object 4320deletion (Alexey Starikovskiy). 4321 4322Code and Data Size: Current and previous core subsystem library sizes are 4323shown below. These are the code and data sizes for the acpica.lib produced 4324by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4325any ACPI driver or OSPM code. The debug version of the code includes the 4326debug output trace mechanism and has a much larger code and data size. Note 4327that these values will vary depending on the efficiency of the compiler and 4328the compiler options used during generation. 4329 4330 Previous Release: 4331 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4332 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4333 Current Release: 4334 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 4335 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 4336 4337---------------------------------------- 433824 June 2005. Summary of changes for version 20050624: 4339 43401) ACPI CA Core Subsystem: 4341 4342Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 4343the host-defined cache object. This allows the OSL implementation to define 4344and type this object in any manner desired, simplifying the OSL 4345implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 4346Linux, and should be defined in the OS-specific header file for other 4347operating systems as required. 4348 4349Changed the interface to AcpiOsAcquireObject to directly return the 4350requested object as the function return (instead of ACPI_STATUS.) This 4351change was made for performance reasons, since this is the purpose of the 4352interface in the first place. AcpiOsAcquireObject is now similar to the 4353AcpiOsAllocate interface. 4354 4355Implemented a new AML debugger command named Businfo. This command displays 4356information about all devices that have an associate _PRT object. The _ADR, 4357_HID, _UID, and _CID are displayed for these devices. 4358 4359Modified the initialization sequence in AcpiInitializeSubsystem to call the 4360OSL interface AcpiOslInitialize first, before any local initialization. This 4361change was required because the global initialization now calls OSL 4362interfaces. 4363 4364Enhanced the Dump command to display the entire contents of Package objects 4365(including all sub-objects and their values.) 4366 4367Restructured the code base to split some files because of size and/or 4368because the code logically belonged in a separate file. New files are listed 4369below. All makefiles and project files included in the ACPI CA release have 4370been updated. 4371 utilities/utcache.c /* Local cache interfaces */ 4372 utilities/utmutex.c /* Local mutex support */ 4373 utilities/utstate.c /* State object support */ 4374 interpreter/parser/psloop.c /* Main AML parse loop */ 4375 4376Code and Data Size: Current and previous core subsystem library sizes are 4377shown below. These are the code and data sizes for the acpica.lib produced 4378by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4379any ACPI driver or OSPM code. The debug version of the code includes the 4380debug output trace mechanism and has a much larger code and data size. Note 4381that these values will vary depending on the efficiency of the compiler and 4382the compiler options used during generation. 4383 4384 Previous Release: 4385 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4386 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4387 Current Release: 4388 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 4389 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 4390 4391 43922) iASL Compiler/Disassembler: 4393 4394Fixed a regression introduced in version 20050513 where the use of a Package 4395object within a Case() statement caused a compile time exception. The 4396original behavior has been restored (a Match() operator is emitted.) 4397 4398---------------------------------------- 439917 June 2005. Summary of changes for version 20050617: 4400 44011) ACPI CA Core Subsystem: 4402 4403Moved the object cache operations into the OS interface layer (OSL) to allow 4404the host OS to handle these operations if desired (for example, the Linux 4405OSL will invoke the slab allocator). This support is optional; the compile 4406time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 4407code in the ACPI CA core. The new OSL interfaces are shown below. See 4408utalloc.c for an example implementation, and acpiosxf.h for the exact 4409interface definitions. With assistance from Alexey Starikovskiy. 4410 AcpiOsCreateCache 4411 AcpiOsDeleteCache 4412 AcpiOsPurgeCache 4413 AcpiOsAcquireObject 4414 AcpiOsReleaseObject 4415 4416Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4417and restore a flags parameter. This fits better with many OS lock models. 4418Note: the current execution state (interrupt handler or not) is no longer 4419passed to these interfaces. If necessary, the OSL must determine this state 4420by itself, a simple and fast operation. With assistance from Alexey 4421Starikovskiy. 4422 4423Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4424present if the revision of the RSDP was 2 or greater. According to the ACPI 4425specification, the XSDT is optional in all cases, and the table manager 4426therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4427Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4428only the RSDT. 4429 4430Fixed an interpreter problem with the Mid() operator in the case of an input 4431string where the resulting output string is of zero length. It now correctly 4432returns a valid, null terminated string object instead of a string object 4433with a null pointer. 4434 4435Fixed a problem with the control method argument handling to allow a store 4436to an Arg object that already contains an object of type Device. The Device 4437object is now correctly overwritten. Previously, an error was returned. 4438 4439 4440Enhanced the debugger Find command to emit object values in addition to the 4441found object pathnames. The output format is the same as the dump namespace 4442command. 4443 4444Enhanced the debugger Set command. It now has the ability to set the value 4445of any Named integer object in the namespace (Previously, only method locals 4446and args could be set.) 4447 4448Code and Data Size: Current and previous core subsystem library sizes are 4449shown below. These are the code and data sizes for the acpica.lib produced 4450by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4451any ACPI driver or OSPM code. The debug version of the code includes the 4452debug output trace mechanism and has a much larger code and data size. Note 4453that these values will vary depending on the efficiency of the compiler and 4454the compiler options used during generation. 4455 4456 Previous Release: 4457 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4458 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4459 Current Release: 4460 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4461 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4462 4463 44642) iASL Compiler/Disassembler: 4465 4466Fixed a regression in the disassembler where if/else/while constructs were 4467output incorrectly. This problem was introduced in the previous release 4468(20050526). This problem also affected the single-step disassembly in the 4469debugger. 4470 4471Fixed a problem where compiling the reserved _OSI method would randomly (but 4472rarely) produce compile errors. 4473 4474Enhanced the disassembler to emit compilable code in the face of incorrect 4475AML resource descriptors. If the optional ResourceSourceIndex is present, 4476but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4477disassembly. Otherwise, the resulting code cannot be compiled without 4478errors. 4479 4480---------------------------------------- 448126 May 2005. Summary of changes for version 20050526: 4482 44831) ACPI CA Core Subsystem: 4484 4485Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4486the module level (not within a control method.) These opcodes are executed 4487exactly once at the time the table is loaded. This type of code was legal up 4488until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4489order to provide backwards compatibility with earlier BIOS implementations. 4490This eliminates the "Encountered executable code at module level" warning 4491that was previously generated upon detection of such code. 4492 4493Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4494inadvertently be generated during the lookup of namespace objects in the 4495second pass parse of ACPI tables and control methods. It appears that this 4496problem could occur during the resolution of forward references to namespace 4497objects. 4498 4499Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4500corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4501allows the deadlock detection debug code to be compiled out in the normal 4502case, improving mutex performance (and overall subsystem performance) 4503considerably. 4504 4505Implemented a handful of miscellaneous fixes for possible memory leaks on 4506error conditions and error handling control paths. These fixes were 4507suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4508 4509Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4510to prevent a fault in this error case. 4511 4512Code and Data Size: Current and previous core subsystem library sizes are 4513shown below. These are the code and data sizes for the acpica.lib produced 4514by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4515any ACPI driver or OSPM code. The debug version of the code includes the 4516debug output trace mechanism and has a much larger code and data size. Note 4517that these values will vary depending on the efficiency of the compiler and 4518the compiler options used during generation. 4519 4520 Previous Release: 4521 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4522 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4523 Current Release: 4524 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4525 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4526 4527 45282) iASL Compiler/Disassembler: 4529 4530Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4531the module level (not within a control method.) These operators will be 4532executed once at the time the table is loaded. This type of code was legal 4533up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4534compiler in order to provide backwards compatibility with earlier BIOS ASL 4535code. 4536 4537The ACPI integer width (specified via the table revision ID or the -r 4538override, 32 or 64 bits) is now used internally during compile-time constant 4539folding to ensure that constants are truncated to 32 bits if necessary. 4540Previously, the revision ID value was only emitted in the AML table header. 4541 4542An error message is now generated for the Mutex and Method operators if the 4543SyncLevel parameter is outside the legal range of 0 through 15. 4544 4545Fixed a problem with the Method operator ParameterTypes list handling (ACPI 45463.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4547The actual underlying implementation of method argument typechecking is 4548still under development, however. 4549 4550---------------------------------------- 455113 May 2005. Summary of changes for version 20050513: 4552 45531) ACPI CA Core Subsystem: 4554 4555Implemented support for PCI Express root bridges -- added support for device 4556PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4557 4558The interpreter now automatically truncates incoming 64-bit constants to 32 4559bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4560also affects the iASL compiler constant folding. (Note: as per below, the 4561iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4562 4563Fixed a problem where string and buffer objects with "static" pointers 4564(pointers to initialization data within an ACPI table) were not handled 4565consistently. The internal object copy operation now always copies the data 4566to a newly allocated buffer, regardless of whether the source object is 4567static or not. 4568 4569Fixed a problem with the FromBCD operator where an implicit result 4570conversion was improperly performed while storing the result to the target 4571operand. Since this is an "explicit conversion" operator, the implicit 4572conversion should never be performed on the output. 4573 4574Fixed a problem with the CopyObject operator where a copy to an existing 4575named object did not always completely overwrite the existing object stored 4576at name. Specifically, a buffer-to-buffer copy did not delete the existing 4577buffer. 4578 4579Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4580structs for consistency. 4581 4582Code and Data Size: Current and previous core subsystem library sizes are 4583shown below. These are the code and data sizes for the acpica.lib produced 4584by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4585any ACPI driver or OSPM code. The debug version of the code includes the 4586debug output trace mechanism and has a much larger code and data size. Note 4587that these values will vary depending on the efficiency of the compiler and 4588the compiler options used during generation. 4589 4590 Previous Release: 4591 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4592 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4593 Current Release: (Same sizes) 4594 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4595 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4596 4597 45982) iASL Compiler/Disassembler: 4599 4600The compiler now emits a warning if an attempt is made to generate a 64-bit 4601integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4602is truncated to 32 bits. 4603 4604Fixed a problem with large package objects: if the static length of the 4605package is greater than 255, the "variable length package" opcode is 4606emitted. Previously, this caused an error. This requires an update to the 4607ACPI spec, since it currently (incorrectly) states that packages larger than 4608255 elements are not allowed. 4609 4610The disassembler now correctly handles variable length packages and packages 4611larger than 255 elements. 4612 4613---------------------------------------- 461408 April 2005. Summary of changes for version 20050408: 4615 46161) ACPI CA Core Subsystem: 4617 4618Fixed three cases in the interpreter where an "index" argument to an ASL 4619function was still (internally) 32 bits instead of the required 64 bits. 4620This was the Index argument to the Index, Mid, and Match operators. 4621 4622The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4623not a POSIX-defined function and not present in most kernel-level C 4624libraries. All references to the C library strupr function have been removed 4625from the headers. 4626 4627Completed the deployment of static functions/prototypes. All prototypes with 4628the static attribute have been moved from the headers to the owning C file. 4629 4630Implemented an extract option (-e) for the AcpiBin utility (AML binary 4631utility). This option allows the utility to extract individual ACPI tables 4632from the output of AcpiDmp. It provides the same functionality of the 4633acpixtract.pl perl script without the worry of setting the correct perl 4634options. AcpiBin runs on Windows and has not yet been generated/validated in 4635the Linux/Unix environment (but should be soon). 4636 4637Updated and fixed the table dump option for AcpiBin (-d). This option 4638converts a single ACPI table to a hex/ascii file, similar to the output of 4639AcpiDmp. 4640 4641Code and Data Size: Current and previous core subsystem library sizes are 4642shown below. These are the code and data sizes for the acpica.lib produced 4643by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4644any ACPI driver or OSPM code. The debug version of the code includes the 4645debug output trace mechanism and has a much larger code and data size. Note 4646that these values will vary depending on the efficiency of the compiler and 4647the compiler options used during generation. 4648 4649 Previous 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 Current Release: 4653 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4654 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4655 4656 46572) iASL Compiler/Disassembler: 4658 4659Disassembler fix: Added a check to ensure that the table length found in the 4660ACPI table header within the input file is not longer than the actual input 4661file size. This indicates some kind of file or table corruption. 4662 4663---------------------------------------- 466429 March 2005. Summary of changes for version 20050329: 4665 46661) ACPI CA Core Subsystem: 4667 4668An error is now generated if an attempt is made to create a Buffer Field of 4669length zero (A CreateField with a length operand of zero.) 4670 4671The interpreter now issues a warning whenever executable code at the module 4672level is detected during ACPI table load. This will give some idea of the 4673prevalence of this type of code. 4674 4675Implemented support for references to named objects (other than control 4676methods) within package objects. 4677 4678Enhanced package object output for the debug object. Package objects are now 4679completely dumped, showing all elements. 4680 4681Enhanced miscellaneous object output for the debug object. Any object can 4682now be written to the debug object (for example, a device object can be 4683written, and the type of the object will be displayed.) 4684 4685The "static" qualifier has been added to all local functions across both the 4686core subsystem and the iASL compiler. 4687 4688The number of "long" lines (> 80 chars) within the source has been 4689significantly reduced, by about 1/3. 4690 4691Cleaned up all header files to ensure that all CA/iASL functions are 4692prototyped (even static functions) and the formatting is consistent. 4693 4694Two new header files have been added, acopcode.h and acnames.h. 4695 4696Removed several obsolete functions that were no longer used. 4697 4698Code and Data Size: Current and previous core subsystem library sizes are 4699shown below. These are the code and data sizes for the acpica.lib produced 4700by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4701any ACPI driver or OSPM code. The debug version of the code includes the 4702debug output trace mechanism and has a much larger code and data size. Note 4703that these values will vary depending on the efficiency of the compiler and 4704the compiler options used during generation. 4705 4706 Previous Release: 4707 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4708 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4709 Current Release: 4710 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4711 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4712 4713 4714 47152) iASL Compiler/Disassembler: 4716 4717Fixed a problem with the resource descriptor generation/support. For the 4718ResourceSourceIndex and the ResourceSource fields, both must be present, or 4719both must be not present - can't have one without the other. 4720 4721The compiler now returns non-zero from the main procedure if any errors have 4722occurred during the compilation. 4723 4724 4725---------------------------------------- 472609 March 2005. Summary of changes for version 20050309: 4727 47281) ACPI CA Core Subsystem: 4729 4730The string-to-buffer implicit conversion code has been modified again after 4731a change to the ACPI specification. In order to match the behavior of the 4732other major ACPI implementation, the target buffer is no longer truncated if 4733the source string is smaller than an existing target buffer. This change 4734requires an update to the ACPI spec, and should eliminate the recent 4735AE_AML_BUFFER_LIMIT issues. 4736 4737The "implicit return" support was rewritten to a new algorithm that solves 4738the general case. Rather than attempt to determine when a method is about to 4739exit, the result of every ASL operator is saved momentarily until the very 4740next ASL operator is executed. Therefore, no matter how the method exits, 4741there will always be a saved implicit return value. This feature is only 4742enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4743AE_AML_NO_RETURN_VALUE errors when enabled. 4744 4745Implemented implicit conversion support for the predicate (operand) of the 4746If, Else, and While operators. String and Buffer arguments are automatically 4747converted to Integers. 4748 4749Changed the string-to-integer conversion behavior to match the new ACPI 4750errata: "If no integer object exists, a new integer is created. The ASCII 4751string is interpreted as a hexadecimal constant. Each string character is 4752interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4753with the first character as the most significant digit, and ending with the 4754first non-hexadecimal character or end-of-string." This means that the first 4755non-hex character terminates the conversion and this is the code that was 4756changed. 4757 4758Fixed a problem where the ObjectType operator would fail (fault) when used 4759on an Index of a Package which pointed to a null package element. The 4760operator now properly returns zero (Uninitialized) in this case. 4761 4762Fixed a problem where the While operator used excessive memory by not 4763properly popping the result stack during execution. There was no memory leak 4764after execution, however. (Code provided by Valery Podrezov.) 4765 4766Fixed a problem where references to control methods within Package objects 4767caused the method to be invoked, instead of producing a reference object 4768pointing to the method. 4769 4770Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4771improve performance and reduce code size. (Code provided by Alexey 4772Starikovskiy.) 4773 4774Code and Data Size: Current and previous core subsystem library sizes are 4775shown below. These are the code and data sizes for the acpica.lib produced 4776by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4777any ACPI driver or OSPM code. The debug version of the code includes the 4778debug output trace mechanism and has a much larger code and data size. Note 4779that these values will vary depending on the efficiency of the compiler and 4780the compiler options used during generation. 4781 4782 Previous Release: 4783 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4784 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4785 Current Release: 4786 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4787 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4788 4789 47902) iASL Compiler/Disassembler: 4791 4792Fixed a problem with the Return operator with no arguments. Since the AML 4793grammar for the byte encoding requires an operand for the Return opcode, the 4794compiler now emits a Return(Zero) for this case. An ACPI specification 4795update has been written for this case. 4796 4797For tables other than the DSDT, namepath optimization is automatically 4798disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4799compiler has no knowledge of where, and thus cannot optimize namepaths. 4800 4801Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4802inadvertently omitted from the ACPI specification, and will require an 4803update to the spec. 4804 4805The source file scan for ASCII characters is now optional (-a). This change 4806was made because some vendors place non-ascii characters within comments. 4807However, the scan is simply a brute-force byte compare to ensure all 4808characters in the file are in the range 0x00 to 0x7F. 4809 4810Fixed a problem with the CondRefOf operator where the compiler was 4811inappropriately checking for the existence of the target. Since the point of 4812the operator is to check for the existence of the target at run-time, the 4813compiler no longer checks for the target existence. 4814 4815Fixed a problem where errors generated from the internal AML interpreter 4816during constant folding were not handled properly, causing a fault. 4817 4818Fixed a problem with overly aggressive range checking for the Stall 4819operator. The valid range (max 255) is now only checked if the operand is of 4820type Integer. All other operand types cannot be statically checked. 4821 4822Fixed a problem where control method references within the RefOf, DeRefOf, 4823and ObjectType operators were not treated properly. They are now treated as 4824actual references, not method invocations. 4825 4826Fixed and enhanced the "list namespace" option (-ln). This option was broken 4827a number of releases ago. 4828 4829Improved error handling for the Field, IndexField, and BankField operators. 4830The compiler now cleanly reports and recovers from errors in the field 4831component (FieldUnit) list. 4832 4833Fixed a disassembler problem where the optional ResourceDescriptor fields 4834TRS and TTP were not always handled correctly. 4835 4836Disassembler - Comments in output now use "//" instead of "/*" 4837 4838---------------------------------------- 483928 February 2005. Summary of changes for version 20050228: 4840 48411) ACPI CA Core Subsystem: 4842 4843Fixed a problem where the result of an Index() operator (an object 4844reference) must increment the reference count on the target object for the 4845life of the object reference. 4846 4847Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4848Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4849resource descriptors. 4850 4851Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4852Space Descriptor" string, indicating interpreter support for the descriptors 4853above. 4854 4855Implemented header support for the new ACPI 3.0 FADT flag bits. 4856 4857Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4858status/enable registers. 4859 4860Updated header support for the MADT processor local Apic struct and MADT 4861platform interrupt source struct for new ACPI 3.0 fields. 4862 4863Implemented header support for the SRAT and SLIT ACPI tables. 4864 4865Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4866at runtime. 4867 4868Code and Data Size: Current and previous core subsystem library sizes are 4869shown below. These are the code and data sizes for the acpica.lib produced 4870by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4871any ACPI driver or OSPM code. The debug version of the code includes the 4872debug output trace mechanism and has a much larger code and data size. Note 4873that these values will vary depending on the efficiency of the compiler and 4874the compiler options used during generation. 4875 4876 Previous Release: 4877 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4878 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4879 Current Release: 4880 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4881 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4882 4883 48842) iASL Compiler/Disassembler: 4885 4886Fixed a problem with the internal 64-bit String-to-integer conversion with 4887strings less than two characters long. 4888 4889Fixed a problem with constant folding where the result of the Index() 4890operator can not be considered a constant. This means that Index() cannot be 4891a type3 opcode and this will require an update to the ACPI specification. 4892 4893Disassembler: Implemented support for the TTP, MTP, and TRS resource 4894descriptor fields. These fields were inadvertently ignored and not output in 4895the disassembly of the resource descriptor. 4896 4897 4898 ---------------------------------------- 489911 February 2005. Summary of changes for version 20050211: 4900 49011) ACPI CA Core Subsystem: 4902 4903Implemented ACPI 3.0 support for implicit conversion within the Match() 4904operator. MatchObjects can now be of type integer, buffer, or string instead 4905of just type integer. Package elements are implicitly converted to the type 4906of the MatchObject. This change aligns the behavior of Match() with the 4907behavior of the other logical operators (LLess(), etc.) It also requires an 4908errata change to the ACPI specification as this support was intended for 4909ACPI 3.0, but was inadvertently omitted. 4910 4911Fixed a problem with the internal implicit "to buffer" conversion. Strings 4912that are converted to buffers will cause buffer truncation if the string is 4913smaller than the target buffer. Integers that are converted to buffers will 4914not cause buffer truncation, only zero extension (both as per the ACPI 4915spec.) The problem was introduced when code was added to truncate the 4916buffer, but this should not be performed in all cases, only the string case. 4917 4918Fixed a problem with the Buffer and Package operators where the interpreter 4919would get confused if two such operators were used as operands to an ASL 4920operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4921stack was not being popped after the execution of these operators, resulting 4922in an AE_NO_RETURN_VALUE exception. 4923 4924Fixed a problem with constructs of the form Store(Index(...),...). The 4925reference object returned from Index was inadvertently resolved to an actual 4926value. This problem was introduced in version 20050114 when the behavior of 4927Store() was modified to restrict the object types that can be used as the 4928source operand (to match the ACPI specification.) 4929 4930Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4931 4932Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4933 4934Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 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: 78.1K Code, 11.5K Data, 89.6K Total 4946 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4947 Current Release: 4948 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4949 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4950 4951 49522) iASL Compiler/Disassembler: 4953 4954Fixed a code generation problem in the constant folding optimization code 4955where incorrect code was generated if a constant was reduced to a buffer 4956object (i.e., a reduced type 5 opcode.) 4957 4958Fixed a typechecking problem for the ToBuffer operator. Caused by an 4959incorrect return type in the internal opcode information table. 4960 4961---------------------------------------- 496225 January 2005. Summary of changes for version 20050125: 4963 49641) ACPI CA Core Subsystem: 4965 4966Fixed a recently introduced problem with the Global Lock where the 4967underlying semaphore was not created. This problem was introduced in 4968version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4969Acquire() operation on _GL. 4970 4971The local object cache is now optional, and is disabled by default. Both 4972AcpiExec and the iASL compiler enable the cache because they run in user 4973mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4974to enable the local cache. 4975 4976Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4977optional "implicit return" support where an error was returned if no return 4978object was expected, but one was implicitly returned. AE_OK is now returned 4979in this case and the implicitly returned object is deleted. 4980AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4981methods such as _STA and _INI where the return type is known up front. 4982 4983Fixed a few issues with the internal convert-to-integer code. It now returns 4984an error if an attempt is made to convert a null string, a string of only 4985blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4986and explicit conversion via the ToInteger() operator. 4987 4988The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4989not needed for normal operation and should increase the performance of the 4990entire subsystem. The code remains in case it is needed for debug purposes 4991again. 4992 4993The AcpiExec source and makefile are included in the Unix/Linux package for 4994the first time. 4995 4996Code and Data Size: Current and previous core subsystem library sizes are 4997shown below. These are the code and data sizes for the acpica.lib produced 4998by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4999any ACPI driver or OSPM code. The debug version of the code includes the 5000debug output trace mechanism and has a much larger code and data size. Note 5001that these values will vary depending on the efficiency of the compiler and 5002the compiler options used during generation. 5003 5004 Previous Release: 5005 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5006 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5007 Current Release: 5008 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 5009 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 5010 50112) iASL Compiler/Disassembler: 5012 5013Switch/Case support: A warning is now issued if the type of the Switch value 5014cannot be determined at compile time. For example, Switch(Arg0) will 5015generate the warning, and the type is assumed to be an integer. As per the 5016ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 5017warning. 5018 5019Switch/Case support: Implemented support for buffer and string objects as 5020the switch value. This is an ACPI 3.0 feature, now that LEqual supports 5021buffers and strings. 5022 5023Switch/Case support: The emitted code for the LEqual() comparisons now uses 5024the switch value as the first operand, not the second. The case value is now 5025the second operand, and this allows the case value to be implicitly 5026converted to the type of the switch value, not the other way around. 5027 5028Switch/Case support: Temporary variables are now emitted immediately within 5029the control method, not at the global level. This means that there are now 503036 temps available per-method, not 36 temps per-module as was the case with 5031the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 5032 5033---------------------------------------- 503414 January 2005. Summary of changes for version 20050114: 5035 5036Added 2005 copyright to all module headers. This affects every module in 5037the core subsystem, iASL compiler, and the utilities. 5038 50391) ACPI CA Core Subsystem: 5040 5041Fixed an issue with the String-to-Buffer conversion code where the string 5042null terminator was not included in the buffer after conversion, but there 5043is existing ASL that assumes the string null terminator is included. This is 5044the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 5045introduced in the previous version when the code was updated to correctly 5046set the converted buffer size as per the ACPI specification. The ACPI spec 5047is ambiguous and will be updated to specify that the null terminator must be 5048included in the converted buffer. This also affects the ToBuffer() ASL 5049operator. 5050 5051Fixed a problem with the Mid() ASL/AML operator where it did not work 5052correctly on Buffer objects. Newly created sub-buffers were not being marked 5053as initialized. 5054 5055 5056Fixed a problem in AcpiTbFindTable where incorrect string compares were 5057performed on the OemId and OemTableId table header fields. These fields are 5058not null terminated, so strncmp is now used instead of strcmp. 5059 5060Implemented a restriction on the Store() ASL/AML operator to align the 5061behavior with the ACPI specification. Previously, any object could be used 5062as the source operand. Now, the only objects that may be used are Integers, 5063Buffers, Strings, Packages, Object References, and DDB Handles. If 5064necessary, the original behavior can be restored by enabling the 5065EnableInterpreterSlack flag. 5066 5067Enhanced the optional "implicit return" support to allow an implicit return 5068value from methods that are invoked externally via the AcpiEvaluateObject 5069interface. This enables implicit returns from the _STA and _INI methods, 5070for example. 5071 5072Changed the Revision() ASL/AML operator to return the current version of the 5073AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 5074the supported ACPI version (This is the function of the _REV method). 5075 5076Updated the _REV predefined method to return the currently supported version 5077of ACPI, now 3. 5078 5079Implemented batch mode option for the AcpiExec utility (-b). 5080 5081Code and Data Size: Current and previous core subsystem library sizes are 5082shown below. These are the code and data sizes for the acpica.lib produced 5083by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5084any ACPI driver or OSPM code. The debug version of the code includes the 5085debug output trace mechanism and has a much larger code and data size. Note 5086that these values will vary depending on the efficiency of the compiler and 5087the compiler options used during generation. 5088 5089 Previous Release: 5090 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5091 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5092 Current Release: 5093 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 5094 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 5095 5096---------------------------------------- 509710 December 2004. Summary of changes for version 20041210: 5098 5099ACPI 3.0 support is nearing completion in both the iASL compiler and the 5100ACPI CA core subsystem. 5101 51021) ACPI CA Core Subsystem: 5103 5104Fixed a problem in the ToDecimalString operator where the resulting string 5105length was incorrectly calculated. The length is now calculated exactly, 5106eliminating incorrect AE_STRING_LIMIT exceptions. 5107 5108Fixed a problem in the ToHexString operator to allow a maximum 200 character 5109string to be produced. 5110 5111Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 5112routine where the length of the resulting buffer was not truncated to the 5113new size (if the target buffer already existed). 5114 5115Code and Data Size: Current and previous core subsystem library sizes are 5116shown below. These are the code and data sizes for the acpica.lib produced 5117by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5118any ACPI driver or OSPM code. The debug version of the code includes the 5119debug output trace mechanism and has a much larger code and data size. Note 5120that these values will vary depending on the efficiency of the compiler and 5121the compiler options used during generation. 5122 5123 Previous Release: 5124 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5125 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5126 Current Release: 5127 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5128 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 5129 5130 51312) iASL Compiler/Disassembler: 5132 5133Implemented the new ACPI 3.0 resource template macros - DWordSpace, 5134ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 5135Includes support in the disassembler. 5136 5137Implemented support for the new (ACPI 3.0) parameter to the Register macro, 5138AccessSize. 5139 5140Fixed a problem where the _HE resource name for the Interrupt macro was 5141referencing bit 0 instead of bit 1. 5142 5143Implemented check for maximum 255 interrupts in the Interrupt macro. 5144 5145Fixed a problem with the predefined resource descriptor names where 5146incorrect AML code was generated if the offset within the resource buffer 5147was 0 or 1. The optimizer shortened the AML code to a single byte opcode 5148but did not update the surrounding package lengths. 5149 5150Changes to the Dma macro: All channels within the channel list must be in 5151the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 5152optional (default is BusMaster). 5153 5154Implemented check for maximum 7 data bytes for the VendorShort macro. 5155 5156The ReadWrite parameter is now optional for the Memory32 and similar macros. 5157 5158---------------------------------------- 515903 December 2004. Summary of changes for version 20041203: 5160 51611) ACPI CA Core Subsystem: 5162 5163The low-level field insertion/extraction code (exfldio) has been completely 5164rewritten to eliminate unnecessary complexity, bugs, and boundary 5165conditions. 5166 5167Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 5168operators where the input operand could be inadvertently deleted if no 5169conversion was necessary (e.g., if the input to ToInteger was an Integer 5170object.) 5171 5172Fixed a problem with the ToDecimalString and ToHexString where an incorrect 5173exception code was returned if the resulting string would be > 200 chars. 5174AE_STRING_LIMIT is now returned. 5175 5176Fixed a problem with the Concatenate operator where AE_OK was always 5177returned, even if the operation failed. 5178 5179Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 5180semaphores to be allocated. 5181 5182Code and Data Size: Current and previous core subsystem library sizes are 5183shown below. These are the code and data sizes for the acpica.lib produced 5184by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5185any ACPI driver or OSPM code. The debug version of the code includes the 5186debug output trace mechanism and has a much larger code and data size. Note 5187that these values will vary depending on the efficiency of the compiler and 5188the compiler options used during generation. 5189 5190 Previous Release: 5191 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5192 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5193 Current Release: 5194 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 5195 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 5196 5197 51982) iASL Compiler/Disassembler: 5199 5200Fixed typechecking for the ObjectType and SizeOf operators. Problem was 5201recently introduced in 20041119. 5202 5203Fixed a problem with the ToUUID macro where the upper nybble of each buffer 5204byte was inadvertently set to zero. 5205 5206---------------------------------------- 520719 November 2004. Summary of changes for version 20041119: 5208 52091) ACPI CA Core Subsystem: 5210 5211Fixed a problem in the internal ConvertToInteger routine where new integers 5212were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 5213buffers and strings to integers. 5214 5215Implemented support to store a value to an Index() on a String object. This 5216is an ACPI 2.0 feature that had not yet been implemented. 5217 5218Implemented new behavior for storing objects to individual package elements 5219(via the Index() operator). The previous behavior was to invoke the implicit 5220conversion rules if an object was already present at the index. The new 5221behavior is to simply delete any existing object and directly store the new 5222object. Although the ACPI specification seems unclear on this subject, other 5223ACPI implementations behave in this manner. (This is the root of the 5224AE_BAD_HEX_CONSTANT issue.) 5225 5226Modified the RSDP memory scan mechanism to support the extended checksum for 5227ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 5228RSDP signature is found with a valid checksum. 5229 5230Code and Data Size: Current and previous core subsystem library sizes are 5231shown below. These are the code and data sizes for the acpica.lib produced 5232by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5233any ACPI driver or OSPM code. The debug version of the code includes the 5234debug output trace mechanism and has a much larger code and data size. Note 5235that these values will vary depending on the efficiency of the compiler and 5236the compiler options used during generation. 5237 5238 Previous Release: 5239 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5240 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5241 Current Release: 5242 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5243 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5244 5245 52462) iASL Compiler/Disassembler: 5247 5248Fixed a missing semicolon in the aslcompiler.y file. 5249 5250---------------------------------------- 525105 November 2004. Summary of changes for version 20041105: 5252 52531) ACPI CA Core Subsystem: 5254 5255Implemented support for FADT revision 2. This was an interim table (between 5256ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 5257 5258Implemented optional support to allow uninitialized LocalX and ArgX 5259variables in a control method. The variables are initialized to an Integer 5260object with a value of zero. This support is enabled by setting the 5261AcpiGbl_EnableInterpreterSlack flag to TRUE. 5262 5263Implemented support for Integer objects for the SizeOf operator. Either 4 5264or 8 is returned, depending on the current integer size (32-bit or 64-bit, 5265depending on the parent table revision). 5266 5267Fixed a problem in the implementation of the SizeOf and ObjectType operators 5268where the operand was resolved to a value too early, causing incorrect 5269return values for some objects. 5270 5271Fixed some possible memory leaks during exceptional conditions. 5272 5273Code and Data Size: Current and previous core subsystem library sizes are 5274shown below. These are the code and data sizes for the acpica.lib produced 5275by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5276any ACPI driver or OSPM code. The debug version of the code includes the 5277debug output trace mechanism and has a much larger code and data size. Note 5278that these values will vary depending on the efficiency of the compiler and 5279the compiler options used during generation. 5280 5281 Previous Release: 5282 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5283 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5284 Current Release: 5285 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 5286 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 5287 5288 52892) iASL Compiler/Disassembler: 5290 5291Implemented support for all ACPI 3.0 reserved names and methods. 5292 5293Implemented all ACPI 3.0 grammar elements in the front-end, including 5294support for semicolons. 5295 5296Implemented the ACPI 3.0 Function() and ToUUID() macros 5297 5298Fixed a problem in the disassembler where a Scope() operator would not be 5299emitted properly if the target of the scope was in another table. 5300 5301---------------------------------------- 530215 October 2004. Summary of changes for version 20041015: 5303 5304Note: ACPI CA is currently undergoing an in-depth and complete formal 5305evaluation to test/verify the following areas. Other suggestions are 5306welcome. This will result in an increase in the frequency of releases and 5307the number of bug fixes in the next few months. 5308 - Functional tests for all ASL/AML operators 5309 - All implicit/explicit type conversions 5310 - Bit fields and operation regions 5311 - 64-bit math support and 32-bit-only "truncated" math support 5312 - Exceptional conditions, both compiler and interpreter 5313 - Dynamic object deletion and memory leaks 5314 - ACPI 3.0 support when implemented 5315 - External interfaces to the ACPI subsystem 5316 5317 53181) ACPI CA Core Subsystem: 5319 5320Fixed two alignment issues on 64-bit platforms - within debug statements in 5321AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 5322field within the non-aligned ACPI generic address structure. 5323 5324Fixed a problem in the Increment and Decrement operators where incorrect 5325operand resolution could result in the inadvertent modification of the 5326original integer when the integer is passed into another method as an 5327argument and the arg is then incremented/decremented. 5328 5329Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 5330BCD number were truncated during conversion. 5331 5332Fixed a problem in the ToDecimal operator where the length of the resulting 5333string could be set incorrectly too long if the input operand was a Buffer 5334object. 5335 5336Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 5337within a buffer would prematurely terminate a compare between buffer 5338objects. 5339 5340Added a check for string overflow (>200 characters as per the ACPI 5341specification) during the Concatenate operator with two string operands. 5342 5343Code and Data Size: Current and previous core subsystem library sizes are 5344shown below. These are the code and data sizes for the acpica.lib produced 5345by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5346any ACPI driver or OSPM code. The debug version of the code includes the 5347debug output trace mechanism and has a much larger code and data size. Note 5348that these values will vary depending on the efficiency of the compiler and 5349the compiler options used during generation. 5350 5351 Previous Release: 5352 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5353 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5354 Current Release: 5355 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5356 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 5357 5358 5359 53602) iASL Compiler/Disassembler: 5361 5362Allow the use of the ObjectType operator on uninitialized Locals and Args 5363(returns 0 as per the ACPI specification). 5364 5365Fixed a problem where the compiler would fault if there was a syntax error 5366in the FieldName of all of the various CreateXXXField operators. 5367 5368Disallow the use of lower case letters within the EISAID macro, as per the 5369ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 5370U is an uppercase letter and N is a hex digit. 5371 5372 5373---------------------------------------- 537406 October 2004. Summary of changes for version 20041006: 5375 53761) ACPI CA Core Subsystem: 5377 5378Implemented support for the ACPI 3.0 Timer operator. This ASL function 5379implements a 64-bit timer with 100 nanosecond granularity. 5380 5381Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 5382implement the ACPI 3.0 Timer operator. This allows the host OS to implement 5383the timer with the best clock available. Also, it keeps the core subsystem 5384out of the clock handling business, since the host OS (usually) performs 5385this function. 5386 5387Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 5388functions use a 64-bit address which is part of the packed ACPI Generic 5389Address Structure. Since the structure is non-aligned, the alignment macros 5390are now used to extract the address to a local variable before use. 5391 5392Fixed a problem where the ToInteger operator assumed all input strings were 5393hexadecimal. The operator now handles both decimal strings and hex strings 5394(prefixed with "0x"). 5395 5396Fixed a problem where the string length in the string object created as a 5397result of the internal ConvertToString procedure could be incorrect. This 5398potentially affected all implicit conversions and also the ToDecimalString 5399and ToHexString operators. 5400 5401Fixed two problems in the ToString operator. If the length parameter was 5402zero, an incorrect string object was created and the value of the input 5403length parameter was inadvertently changed from zero to Ones. 5404 5405Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 5406resource macro was ignored. 5407 5408Simplified the interfaces to the internal division functions, reducing code 5409size and complexity. 5410 5411Code and Data Size: Current and previous core subsystem library sizes are 5412shown below. These are the code and data sizes for the acpica.lib produced 5413by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5414any ACPI driver or OSPM code. The debug version of the code includes the 5415debug output trace mechanism and has a much larger code and data size. Note 5416that these values will vary depending on the efficiency of the compiler and 5417the compiler options used during generation. 5418 5419 Previous 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 Current Release: 5423 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5424 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5425 5426 54272) iASL Compiler/Disassembler: 5428 5429Implemented support for the ACPI 3.0 Timer operator. 5430 5431Fixed a problem where the Default() operator was inadvertently ignored in a 5432Switch/Case block. This was a problem in the translation of the Switch 5433statement to If...Else pairs. 5434 5435Added support to allow a standalone Return operator, with no parentheses (or 5436operands). 5437 5438Fixed a problem with code generation for the ElseIf operator where the 5439translated Else...If parse tree was improperly constructed leading to the 5440loss of some code. 5441 5442---------------------------------------- 544322 September 2004. Summary of changes for version 20040922: 5444 54451) ACPI CA Core Subsystem: 5446 5447Fixed a problem with the implementation of the LNot() operator where "Ones" 5448was not returned for the TRUE case. Changed the code to return Ones instead 5449of (!Arg) which was usually 1. This change affects iASL constant folding for 5450this operator also. 5451 5452Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5453initialized properly -- Now zero the entire buffer in this case where the 5454buffer already exists. 5455 5456Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5457Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5458related code considerably. This will require changes/updates to all OS 5459interface layers (OSLs.) 5460 5461Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5462a system exception handler to be installed. This handler is invoked upon any 5463run-time exception that occurs during control method execution. 5464 5465Added support for the DSDT in AcpiTbFindTable. This allows the 5466DataTableRegion() operator to access the local copy of the DSDT. 5467 5468Code and Data Size: Current and previous core subsystem library sizes are 5469shown below. These are the code and data sizes for the acpica.lib produced 5470by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5471any ACPI driver or OSPM code. The debug version of the code includes the 5472debug output trace mechanism and has a much larger code and data size. Note 5473that these values will vary depending on the efficiency of the compiler and 5474the compiler options used during generation. 5475 5476 Previous Release: 5477 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5478 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5479 Current Release: 5480 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5481 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5482 5483 54842) iASL Compiler/Disassembler: 5485 5486Fixed a problem with constant folding and the LNot operator. LNot was 5487returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5488could result in the generation of an incorrect folded/reduced constant. 5489 5490End-Of-File is now allowed within a "//"-style comment. A parse error no 5491longer occurs if such a comment is at the very end of the input ASL source 5492file. 5493 5494Implemented the "-r" option to override the Revision in the table header. 5495The initial use of this option will be to simplify the evaluation of the AML 5496interpreter by allowing a single ASL source module to be compiled for either 549732-bit or 64-bit integers. 5498 5499 5500---------------------------------------- 550127 August 2004. Summary of changes for version 20040827: 5502 55031) ACPI CA Core Subsystem: 5504 5505- Implemented support for implicit object conversion in the non-numeric 5506logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5507LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5508the second operand is implicitly converted on the fly to match the type of 5509the first operand. For example: 5510 5511 LEqual (Source1, Source2) 5512 5513Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5514The data type of Source1 dictates the required type of Source2. Source2 is 5515implicitly converted if necessary to match the type of Source1. 5516 5517- Updated and corrected the behavior of the string conversion support. The 5518rules concerning conversion of buffers to strings (according to the ACPI 5519specification) are as follows: 5520 5521ToDecimalString - explicit byte-wise conversion of buffer to string of 5522decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5523conversion of buffer to string of hex values (0-FF) separated by commas. 5524ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5525copy with no transform except NULL terminated. Any other implicit buffer-to- 5526string conversion - byte-wise conversion of buffer to string of hex values 5527(0-FF) separated by spaces. 5528 5529- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5530 5531- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5532one byte too short in the case of a node in the root scope. This could 5533cause a fault during debug output. 5534 5535- Code and Data Size: Current and previous core subsystem library sizes are 5536shown below. These are the code and data sizes for the acpica.lib produced 5537by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5538any ACPI driver or OSPM code. The debug version of the code includes the 5539debug output trace mechanism and has a much larger code and data size. Note 5540that these values will vary depending on the efficiency of the compiler and 5541the compiler options used during generation. 5542 5543 Previous Release: 5544 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5545 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5546 Current Release: 5547 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5548 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5549 5550 55512) iASL Compiler/Disassembler: 5552 5553- Fixed a Linux generation error. 5554 5555 5556---------------------------------------- 555716 August 2004. Summary of changes for version 20040816: 5558 55591) ACPI CA Core Subsystem: 5560 5561Designed and implemented support within the AML interpreter for the so- 5562called "implicit return". This support returns the result of the last ASL 5563operation within a control method, in the absence of an explicit Return() 5564operator. A few machines depend on this behavior, even though it is not 5565explicitly supported by the ASL language. It is optional support that can 5566be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5567 5568Removed support for the PCI_Config address space from the internal low level 5569hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5570support was not used internally, and would not work correctly anyway because 5571the PCI bus number and segment number were not supported. There are 5572separate interfaces for PCI configuration space access because of the unique 5573interface. 5574 5575Code and Data Size: Current and previous core subsystem library sizes are 5576shown below. These are the code and data sizes for the acpica.lib produced 5577by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5578any ACPI driver or OSPM code. The debug version of the code includes the 5579debug output trace mechanism and has a much larger code and data size. Note 5580that these values will vary depending on the efficiency of the compiler and 5581the compiler options used during generation. 5582 5583 Previous Release: 5584 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5585 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5586 Current Release: 5587 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5588 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5589 5590 55912) iASL Compiler/Disassembler: 5592 5593Fixed a problem where constants in ASL expressions at the root level (not 5594within a control method) could be inadvertently truncated during code 5595generation. This problem was introduced in the 20040715 release. 5596 5597 5598---------------------------------------- 559915 July 2004. Summary of changes for version 20040715: 5600 56011) ACPI CA Core Subsystem: 5602 5603Restructured the internal HW GPE interfaces to pass/track the current state 5604of interrupts (enabled/disabled) in order to avoid possible deadlock and 5605increase flexibility of the interfaces. 5606 5607Implemented a "lexicographical compare" for String and Buffer objects within 5608the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5609as per further clarification to the ACPI specification. Behavior is similar 5610to C library "strcmp". 5611 5612Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5613external function. In the 32-bit non-debug case, the stack use has been 5614reduced from 168 bytes to 32 bytes. 5615 5616Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5617whose purpose is to allow the AML interpreter to forgive certain bad AML 5618constructs. Default setting is FALSE. 5619 5620Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5621support code. If enabled, it allows field access to go beyond the end of a 5622region definition if the field is within the region length rounded up to the 5623next access width boundary (a common coding error.) 5624 5625Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5626ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5627symbols are lowercased by the latest version of the AcpiSrc tool. 5628 5629The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5630rename "Register" to simply "Reg" to prevent certain compilers from 5631complaining. 5632 5633Code and Data Size: Current and previous core subsystem library sizes are 5634shown below. These are the code and data sizes for the acpica.lib produced 5635by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5636any ACPI driver or OSPM code. The debug version of the code includes the 5637debug output trace mechanism and has a much larger code and data size. Note 5638that these values will vary depending on the efficiency of the compiler and 5639the compiler options used during generation. 5640 5641 Previous Release: 5642 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5643 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5644 Current Release: 5645 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5646 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5647 5648 56492) iASL Compiler/Disassembler: 5650 5651Implemented full support for Package objects within the Case() operator. 5652Note: The Break() operator is currently not supported within Case blocks 5653(TermLists) as there is some question about backward compatibility with ACPI 56541.0 interpreters. 5655 5656 5657Fixed a problem where complex terms were not supported properly within the 5658Switch() operator. 5659 5660Eliminated extraneous warning for compiler-emitted reserved names of the 5661form "_T_x". (Used in Switch/Case operators.) 5662 5663Eliminated optimization messages for "_T_x" objects and small constants 5664within the DefinitionBlock operator. 5665 5666 5667---------------------------------------- 566815 June 2004. Summary of changes for version 20040615: 5669 56701) ACPI CA Core Subsystem: 5671 5672Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5673following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5674LLessEqual. 5675 5676All directory names in the entire source package are lower case, as they 5677were in earlier releases. 5678 5679Implemented "Disassemble" command in the AML debugger that will disassemble 5680a single control method. 5681 5682Code and Data Size: Current and previous core subsystem library sizes are 5683shown below. These are the code and data sizes for the acpica.lib produced 5684by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5685any ACPI driver or OSPM code. The debug version of the code includes the 5686debug output trace mechanism and has a much larger code and data size. Note 5687that these values will vary depending on the efficiency of the compiler and 5688the compiler options used during generation. 5689 5690 Previous Release: 5691 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5692 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5693 5694 Current Release: 5695 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5696 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5697 5698 56992) iASL Compiler/Disassembler: 5700 5701Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5702following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5703LLessEqual. 5704 5705All directory names in the entire source package are lower case, as they 5706were in earlier releases. 5707 5708Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5709not found. 5710 5711Fixed an issue with the Windows version of the compiler where later versions 5712of Windows place the FADT in the registry under the name "FADT" and not 5713"FACP" as earlier versions did. This applies when using the -g or - 5714d<nofilename> options. The compiler now looks for both strings as 5715necessary. 5716 5717Fixed a problem with compiler namepath optimization where a namepath within 5718the Scope() operator could not be optimized if the namepath was a subpath of 5719the current scope path. 5720 5721---------------------------------------- 572227 May 2004. Summary of changes for version 20040527: 5723 57241) ACPI CA Core Subsystem: 5725 5726Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5727support in the RSDP scan code. The original code improperly scanned for the 5728EBDA by simply scanning from memory location 0 to 0x400. The correct method 5729is to first obtain the EBDA pointer from within the BIOS data area, then 5730scan 1K of memory starting at the EBDA pointer. There appear to be few if 5731any machines that place the RSDP in the EBDA, however. 5732 5733Integrated a fix for a possible fault during evaluation of BufferField 5734arguments. Obsolete code that was causing the problem was removed. 5735 5736Found and fixed a problem in the Field Support Code where data could be 5737corrupted on a bit field read that starts on an aligned boundary but does 5738not end on an aligned boundary. Merged the read/write "datum length" 5739calculation code into a common procedure. 5740 5741Rolled in a couple of changes to the FreeBSD-specific header. 5742 5743 5744Code and Data Size: Current and previous core subsystem library sizes are 5745shown below. These are the code and data sizes for the acpica.lib produced 5746by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5747any ACPI driver or OSPM code. The debug version of the code includes the 5748debug output trace mechanism and has a much larger code and data size. Note 5749that these values will vary depending on the efficiency of the compiler and 5750the compiler options used during generation. 5751 5752 Previous Release: 5753 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5754 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5755 Current Release: 5756 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5757 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5758 5759 57602) iASL Compiler/Disassembler: 5761 5762Fixed a generation warning produced by some overly-verbose compilers for a 576364-bit constant. 5764 5765---------------------------------------- 576614 May 2004. Summary of changes for version 20040514: 5767 57681) ACPI CA Core Subsystem: 5769 5770Fixed a problem where hardware GPE enable bits sometimes not set properly 5771during and after GPE method execution. Result of 04/27 changes. 5772 5773Removed extra "clear all GPEs" when sleeping/waking. 5774 5775Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5776AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5777the new AcpiEv* calls as appropriate. 5778 5779ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5780now "Microsoft Windows NT" for maximum compatibility. However this can be 5781changed by modifying the acconfig.h file. 5782 5783Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5784traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5785 5786Run _INI methods on ThermalZone objects. This is against the ACPI 5787specification, but there is apparently ASL code in the field that has these 5788_INI methods, and apparently "other" AML interpreters execute them. 5789 5790Performed a full 16/32/64 bit lint that resulted in some small changes. 5791 5792Added a sleep simulation command to the AML debugger to test sleep code. 5793 5794Code and Data Size: Current and previous core subsystem library sizes are 5795shown below. These are the code and data sizes for the acpica.lib produced 5796by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5797any ACPI driver or OSPM code. The debug version of the code includes the 5798debug output trace mechanism and has a much larger code and data size. Note 5799that these values will vary depending on the efficiency of the compiler and 5800the compiler options used during generation. 5801 5802 Previous Release: 5803 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5804 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5805 Current Release: 5806 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5807 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5808 5809---------------------------------------- 581027 April 2004. Summary of changes for version 20040427: 5811 58121) ACPI CA Core Subsystem: 5813 5814Completed a major overhaul of the GPE handling within ACPI CA. There are 5815now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5816The only GPEs allowed to be combination wake/run are for button-style 5817devices such as a control-method power button, control-method sleep button, 5818or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5819referenced by any _PRW methods are marked for "runtime" and hardware 5820enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5821(and disabled at runtime). However, at sleep time, only those GPEs that 5822have been specifically enabled for wake via the AcpiEnableGpe interface will 5823actually be hardware enabled. 5824 5825A new external interface has been added, AcpiSetGpeType(), that is meant to 5826be used by device drivers to force a GPE to a particular type. It will be 5827especially useful for the drivers for the button devices mentioned above. 5828 5829Completed restructuring of the ACPI CA initialization sequence so that 5830default operation region handlers are installed before GPEs are initialized 5831and the _PRW methods are executed. This will prevent errors when the _PRW 5832methods attempt to access system memory or I/O space. 5833 5834GPE enable/disable no longer reads the GPE enable register. We now keep the 5835enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5836thus no longer depend on the hardware to maintain these bits. 5837 5838Always clear the wake status and fixed/GPE status bits before sleep, even 5839for state S5. 5840 5841Improved the AML debugger output for displaying the GPE blocks and their 5842current status. 5843 5844Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5845x = 0,1,2,3,4. 5846 5847Fixed a problem where the physical address was incorrectly calculated when 5848the Load() operator was used to directly load from an Operation Region (vs. 5849loading from a Field object.) Also added check for minimum table length for 5850this case. 5851 5852Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5853mutex release. 5854 5855Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5856consistency with the other fields returned. 5857 5858Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5859structure for each GPE in the system, so the size of this structure is 5860important. 5861 5862CPU stack requirement reduction: Cleaned up the method execution and object 5863evaluation paths so that now a parameter structure is passed, instead of 5864copying the various method parameters over and over again. 5865 5866In evregion.c: Correctly exit and reenter the interpreter region if and 5867only if dispatching an operation region request to a user-installed handler. 5868Do not exit/reenter when dispatching to a default handler (e.g., default 5869system memory or I/O handlers) 5870 5871 5872Notes for updating drivers for the new GPE support. The following changes 5873must be made to ACPI-related device drivers that are attached to one or more 5874GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5875 58761) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5877explicitly call AcpiEnableGpe. 58782) There is a new interface called AcpiSetGpeType. This should be called 5879before enabling the GPE. Also, this interface will automatically disable 5880the GPE if it is currently enabled. 58813) AcpiEnableGpe no longer supports a GPE type flag. 5882 5883Specific drivers that must be changed: 58841) EC driver: 5885 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5886AeGpeHandler, NULL); 5887 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5888 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5889 58902) Button Drivers (Power, Lid, Sleep): 5891Run _PRW method under parent device 5892If _PRW exists: /* This is a control-method button */ 5893 Extract GPE number and possibly GpeDevice 5894 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5895 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5896 5897For all other devices that have _PRWs, we automatically set the GPE type to 5898ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5899must be done on a selective basis, usually requiring some kind of user app 5900to allow the user to pick the wake devices. 5901 5902 5903Code and Data Size: Current and previous core subsystem library sizes are 5904shown below. These are the code and data sizes for the acpica.lib produced 5905by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5906any ACPI driver or OSPM code. The debug version of the code includes the 5907debug output trace mechanism and has a much larger code and data size. Note 5908that these values will vary depending on the efficiency of the compiler and 5909the compiler options used during generation. 5910 5911 Previous Release: 5912 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5913 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5914 Current Release: 5915 5916 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5917 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5918 5919 5920 5921---------------------------------------- 592202 April 2004. Summary of changes for version 20040402: 5923 59241) ACPI CA Core Subsystem: 5925 5926Fixed an interpreter problem where an indirect store through an ArgX 5927parameter was incorrectly applying the "implicit conversion rules" during 5928the store. From the ACPI specification: "If the target is a method local or 5929argument (LocalX or ArgX), no conversion is performed and the result is 5930stored directly to the target". The new behavior is to disable implicit 5931conversion during ALL stores to an ArgX. 5932 5933Changed the behavior of the _PRW method scan to ignore any and all errors 5934returned by a given _PRW. This prevents the scan from aborting from the 5935failure of any single _PRW. 5936 5937Moved the runtime configuration parameters from the global init procedure to 5938static variables in acglobal.h. This will allow the host to override the 5939default values easily. 5940 5941Code and Data Size: Current and previous core subsystem library sizes are 5942shown below. These are the code and data sizes for the acpica.lib produced 5943by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5944any ACPI driver or OSPM code. The debug version of the code includes the 5945debug output trace mechanism and has a much larger code and data size. Note 5946that these values will vary depending on the efficiency of the compiler and 5947the compiler options used during generation. 5948 5949 Previous Release: 5950 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5951 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5952 Current Release: 5953 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5954 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5955 5956 59572) iASL Compiler/Disassembler: 5958 5959iASL now fully disassembles SSDTs. However, External() statements are not 5960generated automatically for unresolved symbols at this time. This is a 5961planned feature for future implementation. 5962 5963Fixed a scoping problem in the disassembler that occurs when the type of the 5964target of a Scope() operator is overridden. This problem caused an 5965incorrectly nested internal namespace to be constructed. 5966 5967Any warnings or errors that are emitted during disassembly are now commented 5968out automatically so that the resulting file can be recompiled without any 5969hand editing. 5970 5971---------------------------------------- 597226 March 2004. Summary of changes for version 20040326: 5973 59741) ACPI CA Core Subsystem: 5975 5976Implemented support for "wake" GPEs via interaction between GPEs and the 5977_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5978identified as a WAKE GPE and by default will no longer be enabled at 5979runtime. Previously, we were blindly enabling all GPEs with a corresponding 5980_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5981believe this has been the cause of thousands of "spurious" GPEs on some 5982systems. 5983 5984This new GPE behavior is can be reverted to the original behavior (enable 5985ALL GPEs at runtime) via a runtime flag. 5986 5987Fixed a problem where aliased control methods could not access objects 5988properly. The proper scope within the namespace was not initialized 5989(transferred to the target of the aliased method) before executing the 5990target method. 5991 5992Fixed a potential race condition on internal object deletion on the return 5993object in AcpiEvaluateObject. 5994 5995Integrated a fix for resource descriptors where both _MEM and _MTP were 5996being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5997wide, 0x0F instead of 0x03.) 5998 5999Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 6000fault in some cases. 6001 6002Updated Notify() values for debug statements in evmisc.c 6003 6004Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 6005 6006Code and Data Size: Current and previous core subsystem library sizes are 6007shown below. These are the code and data sizes for the acpica.lib produced 6008by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6009any ACPI driver or OSPM code. The debug version of the code includes the 6010debug output trace mechanism and has a much larger code and data size. Note 6011that these values will vary depending on the efficiency of the compiler and 6012the compiler options used during generation. 6013 6014 Previous Release: 6015 6016 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6017 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6018 Current Release: 6019 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 6020 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 6021 6022---------------------------------------- 602311 March 2004. Summary of changes for version 20040311: 6024 60251) ACPI CA Core Subsystem: 6026 6027Fixed a problem where errors occurring during the parse phase of control 6028method execution did not abort cleanly. For example, objects created and 6029installed in the namespace were not deleted. This caused all subsequent 6030invocations of the method to return the AE_ALREADY_EXISTS exception. 6031 6032Implemented a mechanism to force a control method to "Serialized" execution 6033if the method attempts to create namespace objects. (The root of the 6034AE_ALREADY_EXISTS problem.) 6035 6036Implemented support for the predefined _OSI "internal" control method. 6037Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 6038"Windows 2001.1", and can be easily upgraded for new strings as necessary. 6039This feature will allow "other" operating systems to execute the fully 6040tested, "Windows" code path through the ASL code 6041 6042Global Lock Support: Now allows multiple acquires and releases with any 6043internal thread. Removed concept of "owning thread" for this special mutex. 6044 6045Fixed two functions that were inappropriately declaring large objects on the 6046CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 6047method execution considerably. 6048 6049Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 6050S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 6051 6052Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 6053defined on the machine. 6054 6055Implemented two runtime options: One to force all control method execution 6056to "Serialized" to mimic Windows behavior, another to disable _OSI support 6057if it causes problems on a given machine. 6058 6059Code and Data Size: Current and previous core subsystem library sizes are 6060shown below. These are the code and data sizes for the acpica.lib produced 6061by the Microsoft Visual C++ 6.0 compiler, and these values do not include 6062any ACPI driver or OSPM code. The debug version of the code includes the 6063debug output trace mechanism and has a much larger code and data size. Note 6064that these values will vary depending on the efficiency of the compiler and 6065the compiler options used during generation. 6066 6067 Previous Release: 6068 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6069 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6070 Current Release: 6071 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 6072 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 6073 60742) iASL Compiler/Disassembler: 6075 6076Fixed an array size problem for FreeBSD that would cause the compiler to 6077fault. 6078 6079---------------------------------------- 608020 February 2004. Summary of changes for version 20040220: 6081 6082 60831) ACPI CA Core Subsystem: 6084 6085Implemented execution of _SxD methods for Device objects in the 6086GetObjectInfo interface. 6087 6088Fixed calls to _SST method to pass the correct arguments. 6089 6090Added a call to _SST on wake to restore to "working" state. 6091 6092Check for End-Of-Buffer failure case in the WalkResources interface. 6093 6094Integrated fix for 64-bit alignment issue in acglobal.h by moving two 6095structures to the beginning of the file. 6096 6097After wake, clear GPE status register(s) before enabling GPEs. 6098 6099After wake, clear/enable power button. (Perhaps we should clear/enable all 6100fixed events upon wake.) 6101 6102Fixed a couple of possible memory leaks in the Namespace manager. 6103 6104Integrated latest acnetbsd.h file. 6105 6106---------------------------------------- 610711 February 2004. Summary of changes for version 20040211: 6108 6109 61101) ACPI CA Core Subsystem: 6111 6112Completed investigation and implementation of the call-by-reference 6113mechanism for control method arguments. 6114 6115Fixed a problem where a store of an object into an indexed package could 6116fail if the store occurs within a different method than the method that 6117created the package. 6118 6119Fixed a problem where the ToDecimal operator could return incorrect results. 6120 6121Fixed a problem where the CopyObject operator could fail on some of the more 6122obscure objects (e.g., Reference objects.) 6123 6124Improved the output of the Debug object to display buffer, package, and 6125index objects. 6126 6127Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 6128the expected result. 6129 6130Added permanent ACPI_REPORT_ERROR macros for all instances of the 6131ACPI_AML_INTERNAL exception. 6132 6133Integrated latest version of acfreebsd.h 6134 6135---------------------------------------- 613616 January 2004. Summary of changes for version 20040116: 6137 6138The purpose of this release is primarily to update the copyright years in 6139each module, thus causing a huge number of diffs. There are a few small 6140functional changes, however. 6141 61421) ACPI CA Core Subsystem: 6143 6144Improved error messages when there is a problem finding one or more of the 6145required base ACPI tables 6146 6147Reintroduced the definition of APIC_HEADER in actbl.h 6148 6149Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 6150 6151Removed extraneous reference to NewObj in dsmthdat.c 6152 61532) iASL compiler 6154 6155Fixed a problem introduced in December that disabled the correct disassembly 6156of Resource Templates 6157 6158 6159---------------------------------------- 616003 December 2003. Summary of changes for version 20031203: 6161 61621) ACPI CA Core Subsystem: 6163 6164Changed the initialization of Operation Regions during subsystem 6165init to perform two entire walks of the ACPI namespace; The first 6166to initialize the regions themselves, the second to execute the 6167_REG methods. This fixed some interdependencies across _REG 6168methods found on some machines. 6169 6170Fixed a problem where a Store(Local0, Local1) could simply update 6171the object reference count, and not create a new copy of the 6172object if the Local1 is uninitialized. 6173 6174Implemented support for the _SST reserved method during sleep 6175transitions. 6176 6177Implemented support to clear the SLP_TYP and SLP_EN bits when 6178waking up, this is apparently required by some machines. 6179 6180When sleeping, clear the wake status only if SleepState is not S5. 6181 6182Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 6183pointer arithmetic advanced a string pointer too far. 6184 6185Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 6186could be returned if the requested table has not been loaded. 6187 6188Within the support for IRQ resources, restructured the handling of 6189the active and edge/level bits. 6190 6191Fixed a few problems in AcpiPsxExecute() where memory could be 6192leaked under certain error conditions. 6193 6194Improved error messages for the cases where the ACPI mode could 6195not be entered. 6196 6197Code and Data Size: Current and previous core subsystem library 6198sizes are shown below. These are the code and data sizes for the 6199acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6200these values do not include any ACPI driver or OSPM code. The 6201debug version of the code includes the debug output trace 6202mechanism and has a much larger code and data size. Note that 6203these values will vary depending on the efficiency of the compiler 6204and the compiler options used during generation. 6205 6206 Previous Release (20031029): 6207 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6208 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6209 Current Release: 6210 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 6211 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 6212 62132) iASL Compiler/Disassembler: 6214 6215Implemented a fix for the iASL disassembler where a bad index was 6216generated. This was most noticeable on 64-bit platforms 6217 6218 6219---------------------------------------- 622029 October 2003. Summary of changes for version 20031029: 6221 62221) ACPI CA Core Subsystem: 6223 6224 6225Fixed a problem where a level-triggered GPE with an associated 6226_Lxx control method was incorrectly cleared twice. 6227 6228Fixed a problem with the Field support code where an access can 6229occur beyond the end-of-region if the field is non-aligned but 6230extends to the very end of the parent region (resulted in an 6231AE_AML_REGION_LIMIT exception.) 6232 6233Fixed a problem with ACPI Fixed Events where an RT Clock handler 6234would not get invoked on an RTC event. The RTC event bitmasks for 6235the PM1 registers were not being initialized properly. 6236 6237Implemented support for executing _STA and _INI methods for 6238Processor objects. Although this is currently not part of the 6239ACPI specification, there is existing ASL code that depends on the 6240init-time execution of these methods. 6241 6242Implemented and deployed a GetDescriptorName function to decode 6243the various types of internal descriptors. Guards against null 6244descriptors during debug output also. 6245 6246Implemented and deployed a GetNodeName function to extract the 4- 6247character namespace node name. This function simplifies the debug 6248and error output, as well as guarding against null pointers during 6249output. 6250 6251Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 6252simplify the debug and error output of 64-bit integers. This 6253macro replaces the HIDWORD and LODWORD macros for dumping these 6254integers. 6255 6256Updated the implementation of the Stall() operator to only call 6257AcpiOsStall(), and also return an error if the operand is larger 6258than 255. This preserves the required behavior of not 6259relinquishing the processor, as would happen if AcpiOsSleep() was 6260called for "long stalls". 6261 6262Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 6263initialized are now treated as NOOPs. 6264 6265Cleaned up a handful of warnings during 64-bit generation. 6266 6267Fixed a reported error where and incorrect GPE number was passed 6268to the GPE dispatch handler. This value is only used for error 6269output, however. Used this opportunity to clean up and streamline 6270the GPE dispatch code. 6271 6272Code and Data Size: Current and previous core subsystem library 6273sizes are shown below. These are the code and data sizes for the 6274acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6275these values do not include any ACPI driver or OSPM code. The 6276 6277debug version of the code includes the debug output trace 6278mechanism and has a much larger code and data size. Note that 6279these values will vary depending on the efficiency of the compiler 6280and the compiler options used during generation. 6281 6282 Previous Release (20031002): 6283 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6284 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6285 Current Release: 6286 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 6287 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 6288 6289 62902) iASL Compiler/Disassembler: 6291 6292Updated the iASL compiler to return an error if the operand to the 6293Stall() operator is larger than 255. 6294 6295 6296---------------------------------------- 629702 October 2003. Summary of changes for version 20031002: 6298 6299 63001) ACPI CA Core Subsystem: 6301 6302Fixed a problem with Index Fields where the index was not 6303incremented for fields that require multiple writes to the 6304index/data registers (Fields that are wider than the data 6305register.) 6306 6307Fixed a problem with all Field objects where a write could go 6308beyond the end-of-field if the field was larger than the access 6309granularity and therefore required multiple writes to complete the 6310request. An extra write beyond the end of the field could happen 6311inadvertently. 6312 6313Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 6314would incorrectly be returned if the width of the Data Register 6315was larger than the specified field access width. 6316 6317Completed fixes for LoadTable() and Unload() and verified their 6318operation. Implemented full support for the "DdbHandle" object 6319throughout the ACPI CA subsystem. 6320 6321Implemented full support for the MADT and ECDT tables in the ACPI 6322CA header files. Even though these tables are not directly 6323consumed by ACPI CA, the header definitions are useful for ACPI 6324device drivers. 6325 6326Integrated resource descriptor fixes posted to the Linux ACPI 6327list. This included checks for minimum descriptor length, and 6328support for trailing NULL strings within descriptors that have 6329optional string elements. 6330 6331Code and Data Size: Current and previous core subsystem library 6332sizes are shown below. These are the code and data sizes for the 6333acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6334these values do not include any ACPI driver or OSPM code. The 6335debug version of the code includes the debug output trace 6336mechanism and has a much larger code and data size. Note that 6337these values will vary depending on the efficiency of the compiler 6338and the compiler options used during generation. 6339 6340 Previous Release (20030918): 6341 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6342 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6343 Current Release: 6344 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 6345 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 6346 6347 63482) iASL Compiler: 6349 6350Implemented detection of non-ASCII characters within the input 6351source ASL file. This catches attempts to compile binary (AML) 6352files early in the compile, with an informative error message. 6353 6354Fixed a problem where the disassembler would fault if the output 6355filename could not be generated or if the output file could not be 6356opened. 6357 6358---------------------------------------- 635918 September 2003. Summary of changes for version 20030918: 6360 6361 63621) ACPI CA Core Subsystem: 6363 6364Found and fixed a longstanding problem with the late execution of 6365the various deferred AML opcodes (such as Operation Regions, 6366Buffer Fields, Buffers, and Packages). If the name string 6367specified for the name of the new object placed the object in a 6368scope other than the current scope, the initialization/execution 6369of the opcode failed. The solution to this problem was to 6370implement a mechanism where the late execution of such opcodes 6371does not attempt to lookup/create the name a second time in an 6372incorrect scope. This fixes the "region size computed 6373incorrectly" problem. 6374 6375Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 6376Global Lock AE_BAD_PARAMETER error. 6377 6378Fixed several 64-bit issues with prototypes, casting and data 6379types. 6380 6381Removed duplicate prototype from acdisasm.h 6382 6383Fixed an issue involving EC Operation Region Detach (Shaohua Li) 6384 6385Code and Data Size: Current and previous core subsystem library 6386sizes are shown below. These are the code and data sizes for the 6387acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6388these values do not include any ACPI driver or OSPM code. The 6389debug version of the code includes the debug output trace 6390mechanism and has a much larger code and data size. Note that 6391these values will vary depending on the efficiency of the compiler 6392and the compiler options used during generation. 6393 6394 Previous Release: 6395 6396 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6397 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6398 Current Release: 6399 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 6400 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 6401 6402 64032) Linux: 6404 6405Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 6406correct sleep time in seconds. 6407 6408---------------------------------------- 640914 July 2003. Summary of changes for version 20030619: 6410 64111) ACPI CA Core Subsystem: 6412 6413Parse SSDTs in order discovered, as opposed to reverse order 6414(Hrvoje Habjanic) 6415 6416Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6417Klausner, 6418 Nate Lawson) 6419 6420 64212) Linux: 6422 6423Dynamically allocate SDT list (suggested by Andi Kleen) 6424 6425proc function return value cleanups (Andi Kleen) 6426 6427Correctly handle NMI watchdog during long stalls (Andrew Morton) 6428 6429Make it so acpismp=force works (reported by Andrew Morton) 6430 6431 6432---------------------------------------- 643319 June 2003. Summary of changes for version 20030619: 6434 64351) ACPI CA Core Subsystem: 6436 6437Fix To/FromBCD, eliminating the need for an arch-specific #define. 6438 6439Do not acquire a semaphore in the S5 shutdown path. 6440 6441Fix ex_digits_needed for 0. (Takayoshi Kochi) 6442 6443Fix sleep/stall code reversal. (Andi Kleen) 6444 6445Revert a change having to do with control method calling 6446semantics. 6447 64482) Linux: 6449 6450acpiphp update (Takayoshi Kochi) 6451 6452Export acpi_disabled for sonypi (Stelian Pop) 6453 6454Mention acpismp=force in config help 6455 6456Re-add acpitable.c and acpismp=force. This improves backwards 6457 6458compatibility and also cleans up the code to a significant degree. 6459 6460Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6461 6462---------------------------------------- 646322 May 2003. Summary of changes for version 20030522: 6464 64651) ACPI CA Core Subsystem: 6466 6467Found and fixed a reported problem where an AE_NOT_FOUND error 6468occurred occasionally during _BST evaluation. This turned out to 6469be an Owner ID allocation issue where a called method did not get 6470a new ID assigned to it. Eventually, (after 64k calls), the Owner 6471ID UINT16 would wraparound so that the ID would be the same as the 6472caller's and the called method would delete the caller's 6473namespace. 6474 6475Implemented extended error reporting for control methods that are 6476aborted due to a run-time exception. Output includes the exact 6477AML instruction that caused the method abort, a dump of the method 6478locals and arguments at the time of the abort, and a trace of all 6479nested control method calls. 6480 6481Modified the interpreter to allow the creation of buffers of zero 6482length from the AML code. Implemented new code to ensure that no 6483attempt is made to actually allocate a memory buffer (of length 6484zero) - instead, a simple buffer object with a NULL buffer pointer 6485and length zero is created. A warning is no longer issued when 6486the AML attempts to create a zero-length buffer. 6487 6488Implemented a workaround for the "leading asterisk issue" in 6489_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6490asterisk is automatically removed if present in any HID, UID, or 6491CID strings. The iASL compiler will still flag this asterisk as 6492an error, however. 6493 6494Implemented full support for _CID methods that return a package of 6495multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6496now additionally returns a device _CID list if present. This 6497required a change to the external interface in order to pass an 6498ACPI_BUFFER object as a parameter since the _CID list is of 6499variable length. 6500 6501Fixed a problem with the new AE_SAME_HANDLER exception where 6502handler initialization code did not know about this exception. 6503 6504Code and Data Size: Current and previous core subsystem library 6505sizes are shown below. These are the code and data sizes for the 6506acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6507these values do not include any ACPI driver or OSPM code. The 6508debug version of the code includes the debug output trace 6509mechanism and has a much larger code and data size. Note that 6510these values will vary depending on the efficiency of the compiler 6511and the compiler options used during generation. 6512 6513 Previous Release (20030509): 6514 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6515 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6516 Current Release: 6517 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6518 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6519 6520 65212) Linux: 6522 6523Fixed a bug in which we would reinitialize the ACPI interrupt 6524after it was already working, thus disabling all ACPI and the IRQs 6525for any other device sharing the interrupt. (Thanks to Stian 6526Jordet) 6527 6528Toshiba driver update (John Belmonte) 6529 6530Return only 0 or 1 for our interrupt handler status (Andrew 6531Morton) 6532 6533 65343) iASL Compiler: 6535 6536Fixed a reported problem where multiple (nested) ElseIf() 6537statements were not handled correctly by the compiler, resulting 6538in incorrect warnings and incorrect AML code. This was a problem 6539in both the ASL parser and the code generator. 6540 6541 65424) Documentation: 6543 6544Added changes to existing interfaces, new exception codes, and new 6545text concerning reference count object management versus garbage 6546collection. 6547 6548---------------------------------------- 654909 May 2003. Summary of changes for version 20030509. 6550 6551 65521) ACPI CA Core Subsystem: 6553 6554Changed the subsystem initialization sequence to hold off 6555installation of address space handlers until the hardware has been 6556initialized and the system has entered ACPI mode. This is because 6557the installation of space handlers can cause _REG methods to be 6558run. Previously, the _REG methods could potentially be run before 6559ACPI mode was enabled. 6560 6561Fixed some memory leak issues related to address space handler and 6562notify handler installation. There were some problems with the 6563reference count mechanism caused by the fact that the handler 6564objects are shared across several namespace objects. 6565 6566Fixed a reported problem where reference counts within the 6567namespace were not properly updated when named objects created by 6568method execution were deleted. 6569 6570Fixed a reported problem where multiple SSDTs caused a deletion 6571issue during subsystem termination. Restructured the table data 6572structures to simplify the linked lists and the related code. 6573 6574Fixed a problem where the table ID associated with secondary 6575tables (SSDTs) was not being propagated into the namespace objects 6576created by those tables. This would only present a problem for 6577tables that are unloaded at run-time, however. 6578 6579Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6580type as the length parameter (instead of UINT32). 6581 6582Solved a long-standing problem where an ALREADY_EXISTS error 6583appears on various systems. This problem could happen when there 6584are multiple PCI_Config operation regions under a single PCI root 6585bus. This doesn't happen very frequently, but there are some 6586systems that do this in the ASL. 6587 6588Fixed a reported problem where the internal DeleteNode function 6589was incorrectly handling the case where a namespace node was the 6590first in the parent's child list, and had additional peers (not 6591the only child, but first in the list of children.) 6592 6593Code and Data Size: Current core subsystem library sizes are shown 6594below. These are the code and data sizes for the acpica.lib 6595produced by the Microsoft Visual C++ 6.0 compiler, and these 6596values do not include any ACPI driver or OSPM code. The debug 6597version of the code includes the debug output trace mechanism and 6598has a much larger code and data size. Note that these values will 6599vary depending on the efficiency of the compiler and the compiler 6600options used during generation. 6601 6602 Previous Release 6603 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6604 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6605 Current Release: 6606 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6607 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6608 6609 66102) Linux: 6611 6612Allow ":" in OS override string (Ducrot Bruno) 6613 6614Kobject fix (Greg KH) 6615 6616 66173 iASL Compiler/Disassembler: 6618 6619Fixed a problem in the generation of the C source code files (AML 6620is emitted in C source statements for BIOS inclusion) where the 6621Ascii dump that appears within a C comment at the end of each line 6622could cause a compile time error if the AML sequence happens to 6623have an open comment or close comment sequence embedded. 6624 6625 6626---------------------------------------- 662724 April 2003. Summary of changes for version 20030424. 6628 6629 66301) ACPI CA Core Subsystem: 6631 6632Support for big-endian systems has been implemented. Most of the 6633support has been invisibly added behind big-endian versions of the 6634ACPI_MOVE_* macros. 6635 6636Fixed a problem in AcpiHwDisableGpeBlock() and 6637AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6638low level hardware write routine. The offset parameter was 6639actually eliminated from the low level read/write routines because 6640they had become obsolete. 6641 6642Fixed a problem where a handler object was deleted twice during 6643the removal of a fixed event handler. 6644 6645 66462) Linux: 6647 6648A fix for SMP systems with link devices was contributed by 6649 6650Compaq's Dan Zink. 6651 6652(2.5) Return whether we handled the interrupt in our IRQ handler. 6653(Linux ISRs no longer return void, so we can propagate the handler 6654return value from the ACPI CA core back to the OS.) 6655 6656 6657 66583) Documentation: 6659 6660The ACPI CA Programmer Reference has been updated to reflect new 6661interfaces and changes to existing interfaces. 6662 6663---------------------------------------- 666428 March 2003. Summary of changes for version 20030328. 6665 66661) ACPI CA Core Subsystem: 6667 6668The GPE Block Device support has been completed. New interfaces 6669are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6670interfaces (enable, disable, clear, getstatus) have been split 6671into separate interfaces for Fixed Events and General Purpose 6672Events (GPEs) in order to support GPE Block Devices properly. 6673 6674Fixed a problem where the error message "Failed to acquire 6675semaphore" would appear during operations on the embedded 6676controller (EC). 6677 6678Code and Data Size: Current core subsystem library sizes are shown 6679below. These are the code and data sizes for the acpica.lib 6680produced by the Microsoft Visual C++ 6.0 compiler, and these 6681values do not include any ACPI driver or OSPM code. The debug 6682version of the code includes the debug output trace mechanism and 6683has a much larger code and data size. Note that these values will 6684vary depending on the efficiency of the compiler and the compiler 6685options used during generation. 6686 6687 Previous Release 6688 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6689 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6690 Current Release: 6691 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6692 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6693 6694 6695---------------------------------------- 669628 February 2003. Summary of changes for version 20030228. 6697 6698 66991) ACPI CA Core Subsystem: 6700 6701The GPE handling and dispatch code has been completely overhauled 6702in preparation for support of GPE Block Devices (ID ACPI0006). 6703This affects internal data structures and code only; there should 6704be no differences visible externally. One new file has been 6705added, evgpeblk.c 6706 6707The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6708fields that are used to determine the GPE block lengths. The 6709REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6710structures are ignored. This is per the ACPI specification but it 6711isn't very clear. The full 256 Block 0/1 GPEs are now supported 6712(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6713 6714In the SCI interrupt handler, removed the read of the PM1_CONTROL 6715register to look at the SCI_EN bit. On some machines, this read 6716causes an SMI event and greatly slows down SCI events. (This may 6717in fact be the cause of slow battery status response on some 6718systems.) 6719 6720Fixed a problem where a store of a NULL string to a package object 6721could cause the premature deletion of the object. This was seen 6722during execution of the battery _BIF method on some systems, 6723resulting in no battery data being returned. 6724 6725Added AcpiWalkResources interface to simplify parsing of resource 6726lists. 6727 6728Code and Data Size: Current core subsystem library sizes are shown 6729below. These are the code and data sizes for the acpica.lib 6730produced by the Microsoft Visual C++ 6.0 compiler, and these 6731values do not include any ACPI driver or OSPM code. The debug 6732version of the code includes the debug output trace mechanism and 6733has a much larger code and data size. Note that these values will 6734vary depending on the efficiency of the compiler and the compiler 6735options used during generation. 6736 6737 Previous Release 6738 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6739 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6740 Current Release: 6741 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6742 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6743 6744 67452) Linux 6746 6747S3 fixes (Ole Rohne) 6748 6749Update ACPI PHP driver with to use new acpi_walk_resource API 6750(Bjorn Helgaas) 6751 6752Add S4BIOS support (Pavel Machek) 6753 6754Map in entire table before performing checksum (John Stultz) 6755 6756Expand the mem= cmdline to allow the specification of reserved and 6757ACPI DATA blocks (Pavel Machek) 6758 6759Never use ACPI on VISWS 6760 6761Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6762 6763Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6764causing us to think that some systems support C2 when they really 6765don't. 6766 6767Do not count processor objects for non-present CPUs (Thanks to 6768Dominik Brodowski) 6769 6770 67713) iASL Compiler: 6772 6773Fixed a problem where ASL include files could not be found and 6774opened. 6775 6776Added support for the _PDC reserved name. 6777 6778 6779---------------------------------------- 678022 January 2003. Summary of changes for version 20030122. 6781 6782 67831) ACPI CA Core Subsystem: 6784 6785Added a check for constructs of the form: Store (Local0, Local0) 6786where Local0 is not initialized. Apparently, some BIOS 6787programmers believe that this is a NOOP. Since this store doesn't 6788do anything anyway, the new prototype behavior will ignore this 6789error. This is a case where we can relax the strict checking in 6790the interpreter in the name of compatibility. 6791 6792 67932) Linux 6794 6795The AcpiSrc Source Conversion Utility has been released with the 6796Linux package for the first time. This is the utility that is 6797used to convert the ACPI CA base source code to the Linux version. 6798 6799(Both) Handle P_BLK lengths shorter than 6 more gracefully 6800 6801(Both) Move more headers to include/acpi, and delete an unused 6802header. 6803 6804(Both) Move drivers/acpi/include directory to include/acpi 6805 6806(Both) Boot functions don't use cmdline, so don't pass it around 6807 6808(Both) Remove include of unused header (Adrian Bunk) 6809 6810(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6811the 6812former now also includes the latter, acpiphp.h only needs the one, 6813now. 6814 6815(2.5) Make it possible to select method of bios restoring after S3 6816resume. [=> no more ugly ifdefs] (Pavel Machek) 6817 6818(2.5) Make proc write interfaces work (Pavel Machek) 6819 6820(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6821 6822(2.5) Break out ACPI Perf code into its own module, under cpufreq 6823(Dominik Brodowski) 6824 6825(2.4) S4BIOS support (Ducrot Bruno) 6826 6827(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6828Visinoni) 6829 6830 68313) iASL Compiler: 6832 6833Added support to disassemble SSDT and PSDTs. 6834 6835Implemented support to obtain SSDTs from the Windows registry if 6836available. 6837 6838 6839---------------------------------------- 684009 January 2003. Summary of changes for version 20030109. 6841 68421) ACPI CA Core Subsystem: 6843 6844Changed the behavior of the internal Buffer-to-String conversion 6845function. The current ACPI specification states that the contents 6846of the buffer are "converted to a string of two-character 6847hexadecimal numbers, each separated by a space". Unfortunately, 6848this definition is not backwards compatible with existing ACPI 1.0 6849implementations (although the behavior was not defined in the ACPI 68501.0 specification). The new behavior simply copies data from the 6851buffer to the string until a null character is found or the end of 6852the buffer is reached. The new String object is always null 6853terminated. This problem was seen during the generation of _BIF 6854battery data where incorrect strings were returned for battery 6855type, etc. This will also require an errata to the ACPI 6856specification. 6857 6858Renamed all instances of NATIVE_UINT and NATIVE_INT to 6859ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6860 6861Copyright in all module headers (both Linux and non-Linux) has be 6862updated to 2003. 6863 6864Code and Data Size: Current core subsystem library sizes are shown 6865below. These are the code and data sizes for the acpica.lib 6866produced by the Microsoft Visual C++ 6.0 compiler, and these 6867values do not include any ACPI driver or OSPM code. The debug 6868version of the code includes the debug output trace mechanism and 6869has a much larger code and data size. Note that these values will 6870vary depending on the efficiency of the compiler and the compiler 6871options used during generation. 6872 6873 Previous Release 6874 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6875 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6876 Current Release: 6877 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6878 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6879 6880 68812) Linux 6882 6883Fixed an oops on module insertion/removal (Matthew Tippett) 6884 6885(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6886 6887(2.5) Replace pr_debug (Randy Dunlap) 6888 6889(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6890 6891(Both) Eliminate spawning of thread from timer callback, in favor 6892of schedule_work() 6893 6894(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6895 6896(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6897 6898(Both) Add missing statics to button.c (Pavel Machek) 6899 6900Several changes have been made to the source code translation 6901utility that generates the Linux Code in order to make the code 6902more "Linux-like": 6903 6904All typedefs on structs and unions have been removed in keeping 6905with the Linux coding style. 6906 6907Removed the non-Linux SourceSafe module revision number from each 6908module header. 6909 6910Completed major overhaul of symbols to be lowercased for linux. 6911Doubled the number of symbols that are lowercased. 6912 6913Fixed a problem where identifiers within procedure headers and 6914within quotes were not fully lower cased (they were left with a 6915starting capital.) 6916 6917Some C macros whose only purpose is to allow the generation of 16- 6918bit code are now completely removed in the Linux code, increasing 6919readability and maintainability. 6920 6921---------------------------------------- 6922 692312 December 2002. Summary of changes for version 20021212. 6924 6925 69261) ACPI CA Core Subsystem: 6927 6928Fixed a problem where the creation of a zero-length AML Buffer 6929would cause a fault. 6930 6931Fixed a problem where a Buffer object that pointed to a static AML 6932buffer (in an ACPI table) could inadvertently be deleted, causing 6933memory corruption. 6934 6935Fixed a problem where a user buffer (passed in to the external 6936ACPI CA interfaces) could be overwritten if the buffer was too 6937small to complete the operation, causing memory corruption. 6938 6939Fixed a problem in the Buffer-to-String conversion code where a 6940string of length one was always returned, regardless of the size 6941of the input Buffer object. 6942 6943Removed the NATIVE_CHAR data type across the entire source due to 6944lack of need and lack of consistent use. 6945 6946Code and Data Size: Current core subsystem library sizes are shown 6947below. These are the code and data sizes for the acpica.lib 6948produced by the Microsoft Visual C++ 6.0 compiler, and these 6949values do not include any ACPI driver or OSPM code. The debug 6950version of the code includes the debug output trace mechanism and 6951has a much larger code and data size. Note that these values will 6952vary depending on the efficiency of the compiler and the compiler 6953options used during generation. 6954 6955 Previous Release 6956 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6957 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6958 Current Release: 6959 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6960 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6961 6962 6963---------------------------------------- 696405 December 2002. Summary of changes for version 20021205. 6965 69661) ACPI CA Core Subsystem: 6967 6968Fixed a problem where a store to a String or Buffer object could 6969cause corruption of the DSDT if the object type being stored was 6970the same as the target object type and the length of the object 6971being stored was equal to or smaller than the original (existing) 6972target object. This was seen to cause corruption of battery _BIF 6973buffers if the _BIF method modified the buffer on the fly. 6974 6975Fixed a problem where an internal error was generated if a control 6976method invocation was used in an OperationRegion, Buffer, or 6977Package declaration. This was caused by the deferred parsing of 6978the control method and thus the deferred creation of the internal 6979method object. The solution to this problem was to create the 6980internal method object at the moment the method is encountered in 6981the first pass - so that subsequent references to the method will 6982able to obtain the required parameter count and thus properly 6983parse the method invocation. This problem presented itself as an 6984AE_AML_INTERNAL during the pass 1 parse phase during table load. 6985 6986Fixed a problem where the internal String object copy routine did 6987not always allocate sufficient memory for the target String object 6988and caused memory corruption. This problem was seen to cause 6989"Allocation already present in list!" errors as memory allocation 6990became corrupted. 6991 6992Implemented a new function for the evaluation of namespace objects 6993that allows the specification of the allowable return object 6994types. This simplifies a lot of code that checks for a return 6995object of one or more specific objects returned from the 6996evaluation (such as _STA, etc.) This may become and external 6997function if it would be useful to ACPI-related drivers. 6998 6999Completed another round of prefixing #defines with "ACPI_" for 7000clarity. 7001 7002Completed additional code restructuring to allow more modular 7003linking for iASL compiler and AcpiExec. Several files were split 7004creating new files. New files: nsparse.c dsinit.c evgpe.c 7005 7006Implemented an abort mechanism to terminate an executing control 7007method via the AML debugger. This feature is useful for debugging 7008control methods that depend (wait) for specific hardware 7009responses. 7010 7011Code and Data Size: Current core subsystem library sizes are shown 7012below. These are the code and data sizes for the acpica.lib 7013produced by the Microsoft Visual C++ 6.0 compiler, and these 7014values do not include any ACPI driver or OSPM code. The debug 7015version of the code includes the debug output trace mechanism and 7016has a much larger code and data size. Note that these values will 7017vary depending on the efficiency of the compiler and the compiler 7018options used during generation. 7019 7020 Previous Release 7021 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7022 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7023 Current Release: 7024 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 7025 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 7026 7027 70282) iASL Compiler/Disassembler 7029 7030Fixed a compiler code generation problem for "Interrupt" Resource 7031Descriptors. If specified in the ASL, the optional "Resource 7032Source Index" and "Resource Source" fields were not inserted into 7033the correct location within the AML resource descriptor, creating 7034an invalid descriptor. 7035 7036Fixed a disassembler problem for "Interrupt" resource descriptors. 7037The optional "Resource Source Index" and "Resource Source" fields 7038were ignored. 7039 7040 7041---------------------------------------- 704222 November 2002. Summary of changes for version 20021122. 7043 7044 70451) ACPI CA Core Subsystem: 7046 7047Fixed a reported problem where an object stored to a Method Local 7048or Arg was not copied to a new object during the store - the 7049object pointer was simply copied to the Local/Arg. This caused 7050all subsequent operations on the Local/Arg to also affect the 7051original source of the store operation. 7052 7053Fixed a problem where a store operation to a Method Local or Arg 7054was not completed properly if the Local/Arg contained a reference 7055(from RefOf) to a named field. The general-purpose store-to- 7056namespace-node code is now used so that this case is handled 7057automatically. 7058 7059Fixed a problem where the internal object copy routine would cause 7060a protection fault if the object being copied was a Package and 7061contained either 1) a NULL package element or 2) a nested sub- 7062package. 7063 7064Fixed a problem with the GPE initialization that resulted from an 7065ambiguity in the ACPI specification. One section of the 7066specification states that both the address and length of the GPE 7067block must be zero if the block is not supported. Another section 7068implies that only the address need be zero if the block is not 7069supported. The code has been changed so that both the address and 7070the length must be non-zero to indicate a valid GPE block (i.e., 7071if either the address or the length is zero, the GPE block is 7072invalid.) 7073 7074Code and Data Size: Current core subsystem library sizes are shown 7075below. These are the code and data sizes for the acpica.lib 7076produced by the Microsoft Visual C++ 6.0 compiler, and these 7077values do not include any ACPI driver or OSPM code. The debug 7078version of the code includes the debug output trace mechanism and 7079has a much larger code and data size. Note that these values will 7080vary depending on the efficiency of the compiler and the compiler 7081options used during generation. 7082 7083 Previous Release 7084 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7085 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7086 Current Release: 7087 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7088 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 7089 7090 70912) Linux 7092 7093Cleaned up EC driver. Exported an external EC read/write 7094interface. By going through this, other drivers (most notably 7095sonypi) will be able to serialize access to the EC. 7096 7097 70983) iASL Compiler/Disassembler 7099 7100Implemented support to optionally generate include files for both 7101ASM and C (the -i switch). This simplifies BIOS development by 7102automatically creating include files that contain external 7103declarations for the symbols that are created within the 7104 7105(optionally generated) ASM and C AML source files. 7106 7107 7108---------------------------------------- 710915 November 2002. Summary of changes for version 20021115. 7110 71111) ACPI CA Core Subsystem: 7112 7113Fixed a memory leak problem where an error during resolution of 7114 7115method arguments during a method invocation from another method 7116failed to cleanup properly by deleting all successfully resolved 7117argument objects. 7118 7119Fixed a problem where the target of the Index() operator was not 7120correctly constructed if the source object was a package. This 7121problem has not been detected because the use of a target operand 7122with Index() is very rare. 7123 7124Fixed a problem with the Index() operator where an attempt was 7125made to delete the operand objects twice. 7126 7127Fixed a problem where an attempt was made to delete an operand 7128twice during execution of the CondRefOf() operator if the target 7129did not exist. 7130 7131Implemented the first of perhaps several internal create object 7132functions that create and initialize a specific object type. This 7133consolidates duplicated code wherever the object is created, thus 7134shrinking the size of the subsystem. 7135 7136Implemented improved debug/error messages for errors that occur 7137during nested method invocations. All executing method pathnames 7138are displayed (with the error) as the call stack is unwound - thus 7139simplifying debug. 7140 7141Fixed a problem introduced in the 10/02 release that caused 7142premature deletion of a buffer object if a buffer was used as an 7143ASL operand where an integer operand is required (Thus causing an 7144implicit object conversion from Buffer to Integer.) The change in 7145the 10/02 release was attempting to fix a memory leak (albeit 7146incorrectly.) 7147 7148Code and Data Size: Current core subsystem library sizes are shown 7149below. These are the code and data sizes for the acpica.lib 7150produced by the Microsoft Visual C++ 6.0 compiler, and these 7151values do not include any ACPI driver or OSPM code. The debug 7152version of the code includes the debug output trace mechanism and 7153has a much larger code and data size. Note that these values will 7154vary depending on the efficiency of the compiler and the compiler 7155options used during generation. 7156 7157 Previous Release 7158 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7159 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7160 Current Release: 7161 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 7162 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 7163 7164 71652) Linux 7166 7167Changed the implementation of the ACPI semaphores to use down() 7168instead of down_interruptable(). It is important that the 7169execution of ACPI control methods not be interrupted by signals. 7170Methods must run to completion, or the system may be left in an 7171unknown/unstable state. 7172 7173Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 7174(Shawn Starr) 7175 7176 71773) iASL Compiler/Disassembler 7178 7179 7180Changed the default location of output files. All output files 7181are now placed in the current directory by default instead of in 7182the directory of the source file. This change may affect some 7183existing makefiles, but it brings the behavior of the compiler in 7184line with other similar tools. The location of the output files 7185can be overridden with the -p command line switch. 7186 7187 7188---------------------------------------- 718911 November 2002. Summary of changes for version 20021111. 7190 7191 71920) ACPI Specification 2.0B is released and is now available at: 7193http://www.acpi.info/index.html 7194 7195 71961) ACPI CA Core Subsystem: 7197 7198Implemented support for the ACPI 2.0 SMBus Operation Regions. 7199This includes the early detection and handoff of the request to 7200the SMBus region handler (avoiding all of the complex field 7201support code), and support for the bidirectional return packet 7202from an SMBus write operation. This paves the way for the 7203development of SMBus drivers in each host operating system. 7204 7205Fixed a problem where the semaphore WAIT_FOREVER constant was 7206defined as 32 bits, but must be 16 bits according to the ACPI 7207specification. This had the side effect of causing ASL 7208Mutex/Event timeouts even though the ASL code requested a wait 7209forever. Changed all internal references to the ACPI timeout 7210parameter to 16 bits to prevent future problems. Changed the name 7211of WAIT_FOREVER to ACPI_WAIT_FOREVER. 7212 7213Code and Data Size: Current core subsystem library sizes are shown 7214below. These are the code and data sizes for the acpica.lib 7215produced by the Microsoft Visual C++ 6.0 compiler, and these 7216values do not include any ACPI driver or OSPM code. The debug 7217version of the code includes the debug output trace mechanism and 7218has a much larger code and data size. Note that these values will 7219vary depending on the efficiency of the compiler and the compiler 7220options used during generation. 7221 7222 Previous Release 7223 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7224 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7225 Current Release: 7226 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 7227 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 7228 7229 72302) Linux 7231 7232Module loading/unloading fixes (John Cagle) 7233 7234 72353) iASL Compiler/Disassembler 7236 7237Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 7238 7239Implemented support for the disassembly of all SMBus protocol 7240keywords (SMBQuick, SMBWord, etc.) 7241 7242---------------------------------------- 724301 November 2002. Summary of changes for version 20021101. 7244 7245 72461) ACPI CA Core Subsystem: 7247 7248Fixed a problem where platforms that have a GPE1 block but no GPE0 7249block were not handled correctly. This resulted in a "GPE 7250overlap" error message. GPE0 is no longer required. 7251 7252Removed code added in the previous release that inserted nodes 7253into the namespace in alphabetical order. This caused some side- 7254effects on various machines. The root cause of the problem is 7255still under investigation since in theory, the internal ordering 7256of the namespace nodes should not matter. 7257 7258 7259Enhanced error reporting for the case where a named object is not 7260found during control method execution. The full ACPI namepath 7261(name reference) of the object that was not found is displayed in 7262this case. 7263 7264Note: as a result of the overhaul of the namespace object types in 7265the previous release, the namespace nodes for the predefined 7266scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 7267instead of ACPI_TYPE_ANY. This simplifies the namespace 7268management code but may affect code that walks the namespace tree 7269looking for specific object types. 7270 7271Code and Data Size: Current core subsystem library sizes are shown 7272below. These are the code and data sizes for the acpica.lib 7273produced by the Microsoft Visual C++ 6.0 compiler, and these 7274values do not include any ACPI driver or OSPM code. The debug 7275version of the code includes the debug output trace mechanism and 7276has a much larger code and data size. Note that these values will 7277vary depending on the efficiency of the compiler and the compiler 7278options used during generation. 7279 7280 Previous Release 7281 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7282 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7283 Current Release: 7284 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 7285 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 7286 7287 72882) Linux 7289 7290Fixed a problem introduced in the previous release where the 7291Processor and Thermal objects were not recognized and installed in 7292/proc. This was related to the scope type change described above. 7293 7294 72953) iASL Compiler/Disassembler 7296 7297Implemented the -g option to get all of the required ACPI tables 7298from the registry and save them to files (Windows version of the 7299compiler only.) The required tables are the FADT, FACS, and DSDT. 7300 7301Added ACPI table checksum validation during table disassembly in 7302order to catch corrupted tables. 7303 7304 7305---------------------------------------- 730622 October 2002. Summary of changes for version 20021022. 7307 73081) ACPI CA Core Subsystem: 7309 7310Implemented a restriction on the Scope operator that the target 7311must already exist in the namespace at the time the operator is 7312encountered (during table load or method execution). In other 7313words, forward references are not allowed and Scope() cannot 7314create a new object. This changes the previous behavior where the 7315interpreter would create the name if not found. This new behavior 7316correctly enables the search-to-root algorithm during namespace 7317lookup of the target name. Because of this upsearch, this fixes 7318the known Compaq _SB_.OKEC problem and makes both the AML 7319interpreter and iASL compiler compatible with other ACPI 7320implementations. 7321 7322Completed a major overhaul of the internal ACPI object types for 7323the ACPI Namespace and the associated operand objects. Many of 7324these types had become obsolete with the introduction of the two- 7325pass namespace load. This cleanup simplifies the code and makes 7326the entire namespace load mechanism much clearer and easier to 7327understand. 7328 7329Improved debug output for tracking scope opening/closing to help 7330diagnose scoping issues. The old scope name as well as the new 7331scope name are displayed. Also improved error messages for 7332problems with ASL Mutex objects and error messages for GPE 7333problems. 7334 7335Cleaned up the namespace dump code, removed obsolete code. 7336 7337All string output (for all namespace/object dumps) now uses the 7338common ACPI string output procedure which handles escapes properly 7339and does not emit non-printable characters. 7340 7341Fixed some issues with constants in the 64-bit version of the 7342local C library (utclib.c) 7343 7344 73452) Linux 7346 7347EC Driver: No longer attempts to acquire the Global Lock at 7348interrupt level. 7349 7350 73513) iASL Compiler/Disassembler 7352 7353Implemented ACPI 2.0B grammar change that disallows all Type 1 and 73542 opcodes outside of a control method. This means that the 7355"executable" operators (versus the "namespace" operators) cannot 7356be used at the table level; they can only be used within a control 7357method. 7358 7359Implemented the restriction on the Scope() operator where the 7360target must already exist in the namespace at the time the 7361operator is encountered (during ASL compilation). In other words, 7362forward references are not allowed and Scope() cannot create a new 7363object. This makes the iASL compiler compatible with other ACPI 7364implementations and makes the Scope() implementation adhere to the 7365ACPI specification. 7366 7367Fixed a problem where namepath optimization for the Alias operator 7368was optimizing the wrong path (of the two namepaths.) This caused 7369a "Missing alias link" error message. 7370 7371Fixed a problem where an "unknown reserved name" warning could be 7372incorrectly generated for names like "_SB" when the trailing 7373underscore is not used in the original ASL. 7374 7375Fixed a problem where the reserved name check did not handle 7376NamePaths with multiple NameSegs correctly. The first nameseg of 7377the NamePath was examined instead of the last NameSeg. 7378 7379 7380---------------------------------------- 7381 738202 October 2002. Summary of changes for this release. 7383 7384 73851) ACPI CA Core Subsystem version 20021002: 7386 7387Fixed a problem where a store/copy of a string to an existing 7388string did not always set the string length properly in the String 7389object. 7390 7391Fixed a reported problem with the ToString operator where the 7392behavior was identical to the ToHexString operator instead of just 7393simply converting a raw buffer to a string data type. 7394 7395Fixed a problem where CopyObject and the other "explicit" 7396conversion operators were not updating the internal namespace node 7397type as part of the store operation. 7398 7399Fixed a memory leak during implicit source operand conversion 7400where the original object was not deleted if it was converted to a 7401new object of a different type. 7402 7403Enhanced error messages for all problems associated with namespace 7404lookups. Common procedure generates and prints the lookup name as 7405well as the formatted status. 7406 7407Completed implementation of a new design for the Alias support 7408within the namespace. The existing design did not handle the case 7409where a new object was assigned to one of the two names due to the 7410use of an explicit conversion operator, resulting in the two names 7411pointing to two different objects. The new design simply points 7412the Alias name to the original name node - not to the object. 7413This results in a level of indirection that must be handled in the 7414name resolution mechanism. 7415 7416Code and Data Size: Current core subsystem library sizes are shown 7417below. These are the code and data sizes for the acpica.lib 7418produced by the Microsoft Visual C++ 6.0 compiler, and these 7419values do not include any ACPI driver or OSPM code. The debug 7420version of the code includes the debug output trace mechanism and 7421has a larger code and data size. Note that these values will vary 7422depending on the efficiency of the compiler and the compiler 7423options used during generation. 7424 7425 Previous Release 7426 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7427 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7428 Current Release: 7429 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7430 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7431 7432 74332) Linux 7434 7435Initialize thermal driver's timer before it is used. (Knut 7436Neumann) 7437 7438Allow handling negative celsius values. (Kochi Takayoshi) 7439 7440Fix thermal management and make trip points. R/W (Pavel Machek) 7441 7442Fix /proc/acpi/sleep. (P. Christeas) 7443 7444IA64 fixes. (David Mosberger) 7445 7446Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7447 7448Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7449Brodowski) 7450 7451 74523) iASL Compiler/Disassembler 7453 7454Clarified some warning/error messages. 7455 7456 7457---------------------------------------- 745818 September 2002. Summary of changes for this release. 7459 7460 74611) ACPI CA Core Subsystem version 20020918: 7462 7463Fixed a reported problem with reference chaining (via the Index() 7464and RefOf() operators) in the ObjectType() and SizeOf() operators. 7465The definition of these operators includes the dereferencing of 7466all chained references to return information on the base object. 7467 7468Fixed a problem with stores to indexed package elements - the 7469existing code would not complete the store if an "implicit 7470conversion" was not performed. In other words, if the existing 7471object (package element) was to be replaced completely, the code 7472didn't handle this case. 7473 7474Relaxed typechecking on the ASL "Scope" operator to allow the 7475target name to refer to an object of type Integer, String, or 7476Buffer, in addition to the scoping object types (Device, 7477predefined Scopes, Processor, PowerResource, and ThermalZone.) 7478This allows existing AML code that has workarounds for a bug in 7479Windows to function properly. A warning is issued, however. This 7480affects both the AML interpreter and the iASL compiler. Below is 7481an example of this type of ASL code: 7482 7483 Name(DEB,0x00) 7484 Scope(DEB) 7485 { 7486 7487Fixed some reported problems with 64-bit integer support in the 7488local implementation of C library functions (clib.c) 7489 7490 74912) Linux 7492 7493Use ACPI fix map region instead of IOAPIC region, since it is 7494undefined in non-SMP. 7495 7496Ensure that the SCI has the proper polarity and trigger, even on 7497systems that do not have an interrupt override entry in the MADT. 7498 74992.5 big driver reorganization (Pat Mochel) 7500 7501Use early table mapping code from acpitable.c (Andi Kleen) 7502 7503New blacklist entries (Andi Kleen) 7504 7505Blacklist improvements. Split blacklist code out into a separate 7506file. Move checking the blacklist to very early. Previously, we 7507would use ACPI tables, and then halfway through init, check the 7508blacklist -- too late. Now, it's early enough to completely fall- 7509back to non-ACPI. 7510 7511 75123) iASL Compiler/Disassembler version 20020918: 7513 7514Fixed a problem where the typechecking code didn't know that an 7515alias could point to a method. In other words, aliases were not 7516being dereferenced during typechecking. 7517 7518 7519---------------------------------------- 752029 August 2002. Summary of changes for this release. 7521 75221) ACPI CA Core Subsystem Version 20020829: 7523 7524If the target of a Scope() operator already exists, it must be an 7525object type that actually opens a scope -- such as a Device, 7526Method, Scope, etc. This is a fatal runtime error. Similar error 7527check has been added to the iASL compiler also. 7528 7529Tightened up the namespace load to disallow multiple names in the 7530same scope. This previously was allowed if both objects were of 7531the same type. (i.e., a lookup was the same as entering a new 7532name). 7533 7534 75352) Linux 7536 7537Ensure that the ACPI interrupt has the proper trigger and 7538polarity. 7539 7540local_irq_disable is extraneous. (Matthew Wilcox) 7541 7542Make "acpi=off" actually do what it says, and not use the ACPI 7543interpreter *or* the tables. 7544 7545Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7546Takayoshi) 7547 7548 75493) iASL Compiler/Disassembler Version 20020829: 7550 7551Implemented namepath optimization for name declarations. For 7552example, a declaration like "Method (\_SB_.ABCD)" would get 7553optimized to "Method (ABCD)" if the declaration is within the 7554\_SB_ scope. This optimization is in addition to the named 7555reference path optimization first released in the previous 7556version. This would seem to complete all possible optimizations 7557for namepaths within the ASL/AML. 7558 7559If the target of a Scope() operator already exists, it must be an 7560object type that actually opens a scope -- such as a Device, 7561Method, Scope, etc. 7562 7563Implemented a check and warning for unreachable code in the same 7564block below a Return() statement. 7565 7566Fixed a problem where the listing file was not generated if the 7567compiler aborted if the maximum error count was exceeded (200). 7568 7569Fixed a problem where the typechecking of method return values was 7570broken. This includes the check for a return value when the 7571method is invoked as a TermArg (a return value is expected.) 7572 7573Fixed a reported problem where EOF conditions during a quoted 7574string or comment caused a fault. 7575 7576 7577---------------------------------------- 757815 August 2002. Summary of changes for this release. 7579 75801) ACPI CA Core Subsystem Version 20020815: 7581 7582Fixed a reported problem where a Store to a method argument that 7583contains a reference did not perform the indirect store correctly. 7584This problem was created during the conversion to the new 7585reference object model - the indirect store to a method argument 7586code was not updated to reflect the new model. 7587 7588Reworked the ACPI mode change code to better conform to ACPI 2.0, 7589handle corner cases, and improve code legibility (Kochi Takayoshi) 7590 7591Fixed a problem with the pathname parsing for the carat (^) 7592prefix. The heavy use of the carat operator by the new namepath 7593optimization in the iASL compiler uncovered a problem with the AML 7594interpreter handling of this prefix. In the case where one or 7595more carats precede a single nameseg, the nameseg was treated as 7596standalone and the search rule (to root) was inadvertently 7597applied. This could cause both the iASL compiler and the 7598interpreter to find the wrong object or to miss the error that 7599should occur if the object does not exist at that exact pathname. 7600 7601Found and fixed the problem where the HP Pavilion DSDT would not 7602load. This was a relatively minor tweak to the table loading code 7603(a problem caused by the unexpected encounter with a method 7604invocation not within a control method), but it does not solve the 7605overall issue of the execution of AML code at the table level. 7606This investigation is still ongoing. 7607 7608Code and Data Size: Current core subsystem library sizes are shown 7609below. These are the code and data sizes for the acpica.lib 7610produced by the Microsoft Visual C++ 6.0 compiler, and these 7611values do not include any ACPI driver or OSPM code. The debug 7612version of the code includes the debug output trace mechanism and 7613has a larger code and data size. Note that these values will vary 7614depending on the efficiency of the compiler and the compiler 7615options used during generation. 7616 7617 Previous Release 7618 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7619 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7620 Current Release: 7621 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7622 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7623 7624 76252) Linux 7626 7627Remove redundant slab.h include (Brad Hards) 7628 7629Fix several bugs in thermal.c (Herbert Nachtnebel) 7630 7631Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7632 7633Change acpi_system_suspend to use updated irq functions (Pavel 7634Machek) 7635 7636Export acpi_get_firmware_table (Matthew Wilcox) 7637 7638Use proper root proc entry for ACPI (Kochi Takayoshi) 7639 7640Fix early-boot table parsing (Bjorn Helgaas) 7641 7642 76433) iASL Compiler/Disassembler 7644 7645Reworked the compiler options to make them more consistent and to 7646use two-letter options where appropriate. We were running out of 7647sensible letters. This may break some makefiles, so check the 7648current options list by invoking the compiler with no parameters. 7649 7650Completed the design and implementation of the ASL namepath 7651optimization option for the compiler. This option optimizes all 7652references to named objects to the shortest possible path. The 7653first attempt tries to utilize a single nameseg (4 characters) and 7654the "search-to-root" algorithm used by the interpreter. If that 7655cannot be used (because either the name is not in the search path 7656or there is a conflict with another object with the same name), 7657the pathname is optimized using the carat prefix (usually a 7658shorter string than specifying the entire path from the root.) 7659 7660Implemented support to obtain the DSDT from the Windows registry 7661(when the disassembly option is specified with no input file). 7662Added this code as the implementation for AcpiOsTableOverride in 7663the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7664utility) to scan memory for the DSDT to the AcpiOsTableOverride 7665function in the DOS OSL to make the disassembler truly OS 7666independent. 7667 7668Implemented a new option to disassemble and compile in one step. 7669When used without an input filename, this option will grab the 7670DSDT from the local machine, disassemble it, and compile it in one 7671step. 7672 7673Added a warning message for invalid escapes (a backslash followed 7674by any character other than the allowable escapes). This catches 7675the quoted string error "\_SB_" (which should be "\\_SB_" ). 7676 7677Also, there are numerous instances in the ACPI specification where 7678this error occurs. 7679 7680Added a compiler option to disable all optimizations. This is 7681basically the "compatibility mode" because by using this option, 7682the AML code will come out exactly the same as other ASL 7683compilers. 7684 7685Added error messages for incorrectly ordered dependent resource 7686functions. This includes: missing EndDependentFn macro at end of 7687dependent resource list, nested dependent function macros (both 7688start and end), and missing StartDependentFn macro. These are 7689common errors that should be caught at compile time. 7690 7691Implemented _OSI support for the disassembler and compiler. _OSI 7692must be included in the namespace for proper disassembly (because 7693the disassembler must know the number of arguments.) 7694 7695Added an "optimization" message type that is optional (off by 7696default). This message is used for all optimizations - including 7697constant folding, integer optimization, and namepath optimization. 7698 7699---------------------------------------- 770025 July 2002. Summary of changes for this release. 7701 7702 77031) ACPI CA Core Subsystem Version 20020725: 7704 7705The AML Disassembler has been enhanced to produce compilable ASL 7706code and has been integrated into the iASL compiler (see below) as 7707well as the single-step disassembly for the AML debugger and the 7708disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7709resource templates and macros are fully supported. The 7710disassembler has been tested on over 30 different AML files, 7711producing identical AML when the resulting disassembled ASL file 7712is recompiled with the same ASL compiler. 7713 7714Modified the Resource Manager to allow zero interrupts and zero 7715dma channels during the GetCurrentResources call. This was 7716causing problems on some platforms. 7717 7718Added the AcpiOsRedirectOutput interface to the OSL to simplify 7719output redirection for the AcpiOsPrintf and AcpiOsVprintf 7720interfaces. 7721 7722Code and Data Size: Current core subsystem library sizes are shown 7723below. These are the code and data sizes for the acpica.lib 7724produced by the Microsoft Visual C++ 6.0 compiler, and these 7725values do not include any ACPI driver or OSPM code. The debug 7726version of the code includes the debug output trace mechanism and 7727has a larger code and data size. Note that these values will vary 7728depending on the efficiency of the compiler and the compiler 7729options used during generation. 7730 7731 Previous Release 7732 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7733 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7734 Current Release: 7735 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7736 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7737 7738 77392) Linux 7740 7741Fixed a panic in the EC driver (Dominik Brodowski) 7742 7743Implemented checksum of the R/XSDT itself during Linux table scan 7744(Richard Schaal) 7745 7746 77473) iASL compiler 7748 7749The AML disassembler is integrated into the compiler. The "-d" 7750option invokes the disassembler to completely disassemble an 7751input AML file, producing as output a text ASL file with the 7752extension ".dsl" (to avoid name collisions with existing .asl 7753source files.) A future enhancement will allow the disassembler 7754to obtain the BIOS DSDT from the registry under Windows. 7755 7756Fixed a problem with the VendorShort and VendorLong resource 7757descriptors where an invalid AML sequence was created. 7758 7759Implemented a fix for BufferData term in the ASL parser. It was 7760inadvertently defined twice, allowing invalid syntax to pass and 7761causing reduction conflicts. 7762 7763Fixed a problem where the Ones opcode could get converted to a 7764value of zero if "Ones" was used where a byte, word or dword value 7765was expected. The 64-bit value is now truncated to the correct 7766size with the correct value. 7767 7768 7769 7770---------------------------------------- 777102 July 2002. Summary of changes for this release. 7772 7773 77741) ACPI CA Core Subsystem Version 20020702: 7775 7776The Table Manager code has been restructured to add several new 7777features. Tables that are not required by the core subsystem 7778(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7779validated in any way and are returned from AcpiGetFirmwareTable if 7780requested. The AcpiOsTableOverride interface is now called for 7781each table that is loaded by the subsystem in order to allow the 7782host to override any table it chooses. Previously, only the DSDT 7783could be overridden. Added one new files, tbrsdt.c and 7784tbgetall.c. 7785 7786Fixed a problem with the conversion of internal package objects to 7787external objects (when a package is returned from a control 7788method.) The return buffer length was set to zero instead of the 7789proper length of the package object. 7790 7791Fixed a reported problem with the use of the RefOf and DeRefOf 7792operators when passing reference arguments to control methods. A 7793new type of Reference object is used internally for references 7794produced by the RefOf operator. 7795 7796Added additional error messages in the Resource Manager to explain 7797AE_BAD_DATA errors when they occur during resource parsing. 7798 7799Split the AcpiEnableSubsystem into two primitives to enable a 7800finer granularity initialization sequence. These two calls should 7801be called in this order: AcpiEnableSubsystem (flags), 7802AcpiInitializeObjects (flags). The flags parameter remains the 7803same. 7804 7805 78062) Linux 7807 7808Updated the ACPI utilities module to understand the new style of 7809fully resolved package objects that are now returned from the core 7810subsystem. This eliminates errors of the form: 7811 7812 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7813 acpi_utils-0430 [145] acpi_evaluate_reference: 7814 Invalid element in package (not a device reference) 7815 7816The method evaluation utility uses the new buffer allocation 7817scheme instead of calling AcpiEvaluate Object twice. 7818 7819Added support for ECDT. This allows the use of the Embedded 7820 7821Controller before the namespace has been fully initialized, which 7822is necessary for ACPI 2.0 support, and for some laptops to 7823initialize properly. (Laptops using ECDT are still rare, so only 7824limited testing was performed of the added functionality.) 7825 7826Fixed memory leaks in the EC driver. 7827 7828Eliminated a brittle code structure in acpi_bus_init(). 7829 7830Eliminated the acpi_evaluate() helper function in utils.c. It is 7831no longer needed since acpi_evaluate_object can optionally 7832allocate memory for the return object. 7833 7834Implemented fix for keyboard hang when getting battery readings on 7835some systems (Stephen White) 7836 7837PCI IRQ routing update (Dominik Brodowski) 7838 7839Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7840support 7841 7842---------------------------------------- 784311 June 2002. Summary of changes for this release. 7844 7845 78461) ACPI CA Core Subsystem Version 20020611: 7847 7848Fixed a reported problem where constants such as Zero and One 7849appearing within _PRT packages were not handled correctly within 7850the resource manager code. Originally reported against the ASL 7851compiler because the code generator now optimizes integers to 7852their minimal AML representation (i.e. AML constants if possible.) 7853The _PRT code now handles all AML constant opcodes correctly 7854(Zero, One, Ones, Revision). 7855 7856Fixed a problem with the Concatenate operator in the AML 7857interpreter where a buffer result object was incorrectly marked as 7858not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7859 7860All package sub-objects are now fully resolved before they are 7861returned from the external ACPI interfaces. This means that name 7862strings are resolved to object handles, and constant operators 7863(Zero, One, Ones, Revision) are resolved to Integers. 7864 7865Implemented immediate resolution of the AML Constant opcodes 7866(Zero, One, Ones, Revision) to Integer objects upon detection 7867within the AML stream. This has simplified and reduced the 7868generated code size of the subsystem by eliminating about 10 7869switch statements for these constants (which previously were 7870contained in Reference objects.) The complicating issues are that 7871the Zero opcode is used as a "placeholder" for unspecified 7872optional target operands and stores to constants are defined to be 7873no-ops. 7874 7875Code and Data Size: Current core subsystem library sizes are shown 7876below. These are the code and data sizes for the acpica.lib 7877produced by the Microsoft Visual C++ 6.0 compiler, and these 7878values do not include any ACPI driver or OSPM code. The debug 7879version of the code includes the debug output trace mechanism and 7880has a larger code and data size. Note that these values will vary 7881depending on the efficiency of the compiler and the compiler 7882options used during generation. 7883 7884 Previous Release 7885 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7886 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7887 Current Release: 7888 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7889 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7890 7891 78922) Linux 7893 7894 7895Added preliminary support for obtaining _TRA data for PCI root 7896bridges (Bjorn Helgaas). 7897 7898 78993) iASL Compiler Version X2046: 7900 7901Fixed a problem where the "_DDN" reserved name was defined to be a 7902control method with one argument. There are no arguments, and 7903_DDN does not have to be a control method. 7904 7905Fixed a problem with the Linux version of the compiler where the 7906source lines printed with error messages were the wrong lines. 7907This turned out to be the "LF versus CR/LF" difference between 7908Windows and Unix. This appears to be the longstanding issue 7909concerning listing output and error messages. 7910 7911Fixed a problem with the Linux version of compiler where opcode 7912names within error messages were wrong. This was caused by a 7913slight difference in the output of the Flex tool on Linux versus 7914Windows. 7915 7916Fixed a problem with the Linux compiler where the hex output files 7917contained some garbage data caused by an internal buffer overrun. 7918 7919 7920---------------------------------------- 792117 May 2002. Summary of changes for this release. 7922 7923 79241) ACPI CA Core Subsystem Version 20020517: 7925 7926Implemented a workaround to an BIOS bug discovered on the HP 7927OmniBook where the FADT revision number and the table size are 7928inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7929behavior is to fallback to using only the ACPI 1.0 fields of the 7930FADT if the table is too small to be a ACPI 2.0 table as claimed 7931by the revision number. Although this is a BIOS bug, this is a 7932case where the workaround is simple enough and with no side 7933effects, so it seemed prudent to add it. A warning message is 7934issued, however. 7935 7936Implemented minimum size checks for the fixed-length ACPI tables - 7937- the FADT and FACS, as well as consistency checks between the 7938revision number and the table size. 7939 7940Fixed a reported problem in the table override support where the 7941new table pointer was incorrectly treated as a physical address 7942instead of a logical address. 7943 7944Eliminated the use of the AE_AML_ERROR exception and replaced it 7945with more descriptive codes. 7946 7947Fixed a problem where an exception would occur if an ASL Field was 7948defined with no named Field Units underneath it (used by some 7949index fields). 7950 7951Code and Data Size: Current core subsystem library sizes are shown 7952below. These are the code and data sizes for the acpica.lib 7953produced by the Microsoft Visual C++ 6.0 compiler, and these 7954values do not include any ACPI driver or OSPM code. The debug 7955version of the code includes the debug output trace mechanism and 7956has a larger code and data size. Note that these values will vary 7957depending on the efficiency of the compiler and the compiler 7958options used during generation. 7959 7960 Previous Release 7961 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7962 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7963 Current Release: 7964 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7965 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7966 7967 7968 79692) Linux 7970 7971Much work done on ACPI init (MADT and PCI IRQ routing support). 7972(Paul D. and Dominik Brodowski) 7973 7974Fix PCI IRQ-related panic on boot (Sam Revitch) 7975 7976Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7977 7978Fix "MHz" typo (Dominik Brodowski) 7979 7980Fix RTC year 2000 issue (Dominik Brodowski) 7981 7982Preclude multiple button proc entries (Eric Brunet) 7983 7984Moved arch-specific code out of include/platform/aclinux.h 7985 79863) iASL Compiler Version X2044: 7987 7988Implemented error checking for the string used in the EISAID macro 7989(Usually used in the definition of the _HID object.) The code now 7990strictly enforces the PnP format - exactly 7 characters, 3 7991uppercase letters and 4 hex digits. 7992 7993If a raw string is used in the definition of the _HID object 7994(instead of the EISAID macro), the string must contain all 7995alphanumeric characters (e.g., "*PNP0011" is not allowed because 7996of the asterisk.) 7997 7998Implemented checking for invalid use of ACPI reserved names for 7999most of the name creation operators (Name, Device, Event, Mutex, 8000OperationRegion, PowerResource, Processor, and ThermalZone.) 8001Previously, this check was only performed for control methods. 8002 8003Implemented an additional check on the Name operator to emit an 8004error if a reserved name that must be implemented in ASL as a 8005control method is used. We know that a reserved name must be a 8006method if it is defined with input arguments. 8007 8008The warning emitted when a namespace object reference is not found 8009during the cross reference phase has been changed into an error. 8010The "External" directive should be used for names defined in other 8011modules. 8012 8013 80144) Tools and Utilities 8015 8016The 16-bit tools (adump16 and aexec16) have been regenerated and 8017tested. 8018 8019Fixed a problem with the output of both acpidump and adump16 where 8020the indentation of closing parentheses and brackets was not 8021 8022aligned properly with the parent block. 8023 8024 8025---------------------------------------- 802603 May 2002. Summary of changes for this release. 8027 8028 80291) ACPI CA Core Subsystem Version 20020503: 8030 8031Added support a new OSL interface that allows the host operating 8032 8033system software to override the DSDT found in the firmware - 8034AcpiOsTableOverride. With this interface, the OSL can examine the 8035version of the firmware DSDT and replace it with a different one 8036if desired. 8037 8038Added new external interfaces for accessing ACPI registers from 8039device drivers and other system software - AcpiGetRegister and 8040AcpiSetRegister. This was simply an externalization of the 8041existing AcpiHwBitRegister interfaces. 8042 8043Fixed a regression introduced in the previous build where the 8044ASL/AML CreateField operator always returned an error, 8045"destination must be a NS Node". 8046 8047Extended the maximum time (before failure) to successfully enable 8048ACPI mode to 3 seconds. 8049 8050Code and Data Size: Current core subsystem library sizes are shown 8051below. These are the code and data sizes for the acpica.lib 8052produced by the Microsoft Visual C++ 6.0 compiler, and these 8053values do not include any ACPI driver or OSPM code. The debug 8054version of the code includes the debug output trace mechanism and 8055has a larger code and data size. Note that these values will vary 8056depending on the efficiency of the compiler and the compiler 8057options used during generation. 8058 8059 Previous Release 8060 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8061 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8062 Current Release: 8063 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 8064 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 8065 8066 80672) Linux 8068 8069Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 8070free. While 3 out of 4 of our in-house systems work fine, the last 8071one still hangs when testing the LAPIC timer. 8072 8073Renamed many files in 2.5 kernel release to omit "acpi_" from the 8074name. 8075 8076Added warning on boot for Presario 711FR. 8077 8078Sleep improvements (Pavel Machek) 8079 8080ACPI can now be built without CONFIG_PCI enabled. 8081 8082IA64: Fixed memory map functions (JI Lee) 8083 8084 80853) iASL Compiler Version X2043: 8086 8087Added support to allow the compiler to be integrated into the MS 8088VC++ development environment for one-button compilation of single 8089files or entire projects -- with error-to-source-line mapping. 8090 8091Implemented support for compile-time constant folding for the 8092Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 8093specification. This allows the ASL writer to use expressions 8094instead of Integer/Buffer/String constants in terms that must 8095evaluate to constants at compile time and will also simplify the 8096emitted AML in any such sub-expressions that can be folded 8097(evaluated at compile-time.) This increases the size of the 8098compiler significantly because a portion of the ACPI CA AML 8099interpreter is included within the compiler in order to pre- 8100evaluate constant expressions. 8101 8102 8103Fixed a problem with the "Unicode" ASL macro that caused the 8104compiler to fault. (This macro is used in conjunction with the 8105_STR reserved name.) 8106 8107Implemented an AML opcode optimization to use the Zero, One, and 8108Ones opcodes where possible to further reduce the size of integer 8109constants and thus reduce the overall size of the generated AML 8110code. 8111 8112Implemented error checking for new reserved terms for ACPI version 81132.0A. 8114 8115Implemented the -qr option to display the current list of ACPI 8116reserved names known to the compiler. 8117 8118Implemented the -qc option to display the current list of ASL 8119operators that are allowed within constant expressions and can 8120therefore be folded at compile time if the operands are constants. 8121 8122 81234) Documentation 8124 8125Updated the Programmer's Reference for new interfaces, data types, 8126and memory allocation model options. 8127 8128Updated the iASL Compiler User Reference to apply new format and 8129add information about new features and options. 8130 8131---------------------------------------- 813219 April 2002. Summary of changes for this release. 8133 81341) ACPI CA Core Subsystem Version 20020419: 8135 8136The source code base for the Core Subsystem has been completely 8137cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 8138versions. The Lint option files used are included in the 8139/acpi/generate/lint directory. 8140 8141Implemented enhanced status/error checking across the entire 8142Hardware manager subsystem. Any hardware errors (reported from 8143the OSL) are now bubbled up and will abort a running control 8144method. 8145 8146 8147Fixed a problem where the per-ACPI-table integer width (32 or 64) 8148was stored only with control method nodes, causing a fault when 8149non-control method code was executed during table loading. The 8150solution implemented uses a global variable to indicate table 8151width across the entire ACPI subsystem. Therefore, ACPI CA does 8152not support mixed integer widths across different ACPI tables 8153(DSDT, SSDT). 8154 8155Fixed a problem where NULL extended fields (X fields) in an ACPI 81562.0 ACPI FADT caused the table load to fail. Although the 8157existing ACPI specification is a bit fuzzy on this topic, the new 8158behavior is to fall back on a ACPI 1.0 field if the corresponding 8159ACPI 2.0 X field is zero (even though the table revision indicates 8160a full ACPI 2.0 table.) The ACPI specification will be updated to 8161clarify this issue. 8162 8163Fixed a problem with the SystemMemory operation region handler 8164where memory was always accessed byte-wise even if the AML- 8165specified access width was larger than a byte. This caused 8166problems on systems with memory-mapped I/O. Memory is now 8167accessed with the width specified. On systems that do not support 8168non-aligned transfers, a check is made to guarantee proper address 8169alignment before proceeding in order to avoid an AML-caused 8170alignment fault within the kernel. 8171 8172 8173Fixed a problem with the ExtendedIrq resource where only one byte 8174of the 4-byte Irq field was extracted. 8175 8176Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 8177function was out of date and required a rewrite. 8178 8179Code and Data Size: Current core subsystem library sizes are shown 8180below. These are the code and data sizes for the acpica.lib 8181produced by the Microsoft Visual C++ 6.0 compiler, and these 8182values do not include any ACPI driver or OSPM code. The debug 8183version of the code includes the debug output trace mechanism and 8184has a larger code and data size. Note that these values will vary 8185depending on the efficiency of the compiler and the compiler 8186options used during generation. 8187 8188 Previous Release 8189 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8190 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8191 Current Release: 8192 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 8193 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 8194 8195 81962) Linux 8197 8198PCI IRQ routing fixes (Dominik Brodowski) 8199 8200 82013) iASL Compiler Version X2042: 8202 8203Implemented an additional compile-time error check for a field 8204unit whose size + minimum access width would cause a run-time 8205access beyond the end-of-region. Previously, only the field size 8206itself was checked. 8207 8208The Core subsystem and iASL compiler now share a common parse 8209object in preparation for compile-time evaluation of the type 82103/4/5 ASL operators. 8211 8212 8213---------------------------------------- 8214Summary of changes for this release: 03_29_02 8215 82161) ACPI CA Core Subsystem Version 20020329: 8217 8218Implemented support for late evaluation of TermArg operands to 8219Buffer and Package objects. This allows complex expressions to be 8220used in the declarations of these object types. 8221 8222Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 82231.0, if the field was larger than 32 bits, it was returned as a 8224buffer - otherwise it was returned as an integer. In ACPI 2.0, 8225the field is returned as a buffer only if the field is larger than 822664 bits. The TableRevision is now considered when making this 8227conversion to avoid incompatibility with existing ASL code. 8228 8229Implemented logical addressing for AcpiOsGetRootPointer. This 8230allows an RSDP with either a logical or physical address. With 8231this support, the host OS can now override all ACPI tables with 8232one logical RSDP. Includes implementation of "typed" pointer 8233support to allow a common data type for both physical and logical 8234pointers internally. This required a change to the 8235AcpiOsGetRootPointer interface. 8236 8237Implemented the use of ACPI 2.0 Generic Address Structures for all 8238GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 8239mapped I/O for these ACPI features. 8240 8241Initialization now ignores not only non-required tables (All 8242tables other than the FADT, FACS, DSDT, and SSDTs), but also does 8243not validate the table headers of unrecognized tables. 8244 8245Fixed a problem where a notify handler could only be 8246installed/removed on an object of type Device. All "notify" 8247 8248objects are now supported -- Devices, Processor, Power, and 8249Thermal. 8250 8251Removed most verbosity from the ACPI_DB_INFO debug level. Only 8252critical information is returned when this debug level is enabled. 8253 8254Code and Data Size: Current core subsystem library sizes are shown 8255below. These are the code and data sizes for the acpica.lib 8256produced by the Microsoft Visual C++ 6.0 compiler, and these 8257values do not include any ACPI driver or OSPM code. The debug 8258version of the code includes the debug output trace mechanism and 8259has a larger code and data size. Note that these values will vary 8260depending on the efficiency of the compiler and the compiler 8261options used during generation. 8262 8263 Previous Release 8264 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8265 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8266 Current Release: 8267 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 8268 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 8269 8270 82712) Linux: 8272 8273The processor driver (acpi_processor.c) now fully supports ACPI 82742.0-based processor performance control (e.g. Intel(R) 8275SpeedStep(TM) technology) Note that older laptops that only have 8276the Intel "applet" interface are not supported through this. The 8277'limit' and 'performance' interface (/proc) are fully functional. 8278[Note that basic policy for controlling performance state 8279transitions will be included in the next version of ospmd.] The 8280idle handler was modified to more aggressively use C2, and PIIX4 8281errata handling underwent a complete overhaul (big thanks to 8282Dominik Brodowski). 8283 8284Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 8285based devices in the ACPI namespace are now dynamically bound 8286(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 8287This allows, among other things, ACPI to resolve bus numbers for 8288subordinate PCI bridges. 8289 8290Enhanced PCI IRQ routing to get the proper bus number for _PRT 8291entries defined underneath PCI bridges. 8292 8293Added IBM 600E to bad bios list due to invalid _ADR value for 8294PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 8295 8296In the process of adding full MADT support (e.g. IOAPIC) for IA32 8297(acpi.c, mpparse.c) -- stay tuned. 8298 8299Added back visual differentiation between fixed-feature and 8300control-method buttons in dmesg. Buttons are also subtyped (e.g. 8301button/power/PWRF) to simplify button identification. 8302 8303We no longer use -Wno-unused when compiling debug. Please ignore 8304any "_THIS_MODULE defined but not used" messages. 8305 8306Can now shut down the system using "magic sysrq" key. 8307 8308 83093) iASL Compiler version 2041: 8310 8311Fixed a problem where conversion errors for hex/octal/decimal 8312constants were not reported. 8313 8314Implemented a fix for the General Register template Address field. 8315This field was 8 bits when it should be 64. 8316 8317Fixed a problem where errors/warnings were no longer being emitted 8318within the listing output file. 8319 8320Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 8321exactly 4 characters, alphanumeric only. 8322 8323 8324 8325 8326---------------------------------------- 8327Summary of changes for this release: 03_08_02 8328 8329 83301) ACPI CA Core Subsystem Version 20020308: 8331 8332Fixed a problem with AML Fields where the use of the "AccessAny" 8333keyword could cause an interpreter error due to attempting to read 8334or write beyond the end of the parent Operation Region. 8335 8336Fixed a problem in the SystemMemory Operation Region handler where 8337an attempt was made to map memory beyond the end of the region. 8338This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 8339errors on some Linux systems. 8340 8341Fixed a problem where the interpreter/namespace "search to root" 8342algorithm was not functioning for some object types. Relaxed the 8343internal restriction on the search to allow upsearches for all 8344external object types as well as most internal types. 8345 8346 83472) Linux: 8348 8349We now use safe_halt() macro versus individual calls to sti | hlt. 8350 8351Writing to the processor limit interface should now work. "echo 1" 8352will increase the limit, 2 will decrease, and 0 will reset to the 8353 8354default. 8355 8356 83573) ASL compiler: 8358 8359Fixed segfault on Linux version. 8360 8361 8362---------------------------------------- 8363Summary of changes for this release: 02_25_02 8364 83651) ACPI CA Core Subsystem: 8366 8367 8368Fixed a problem where the GPE bit masks were not initialized 8369properly, causing erratic GPE behavior. 8370 8371Implemented limited support for multiple calling conventions. The 8372code can be generated with either the VPL (variable parameter 8373list, or "C") convention, or the FPL (fixed parameter list, or 8374"Pascal") convention. The core subsystem is about 3.4% smaller 8375when generated with FPL. 8376 8377 83782) Linux 8379 8380Re-add some /proc/acpi/event functionality that was lost during 8381the rewrite 8382 8383Resolved issue with /proc events for fixed-feature buttons showing 8384up as the system device. 8385 8386Fixed checks on C2/C3 latencies to be inclusive of maximum values. 8387 8388Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 8389 8390Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 8391 8392Fixed limit interface & usage to fix bugs with passive cooling 8393hysterisis. 8394 8395Restructured PRT support. 8396 8397 8398---------------------------------------- 8399Summary of changes for this label: 02_14_02 8400 8401 84021) ACPI CA Core Subsystem: 8403 8404Implemented support in AcpiLoadTable to allow loading of FACS and 8405FADT tables. 8406 8407Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 8408been removed. All 64-bit platforms should be migrated to the ACPI 84092.0 tables. The actbl71.h header has been removed from the source 8410tree. 8411 8412All C macros defined within the subsystem have been prefixed with 8413"ACPI_" to avoid collision with other system include files. 8414 8415Removed the return value for the two AcpiOsPrint interfaces, since 8416it is never used and causes lint warnings for ignoring the return 8417value. 8418 8419Added error checking to all internal mutex acquire and release 8420calls. Although a failure from one of these interfaces is 8421probably a fatal system error, these checks will cause the 8422immediate abort of the currently executing method or interface. 8423 8424Fixed a problem where the AcpiSetCurrentResources interface could 8425fault. This was a side effect of the deployment of the new memory 8426allocation model. 8427 8428Fixed a couple of problems with the Global Lock support introduced 8429in the last major build. The "common" (1.0/2.0) internal FACS was 8430being overwritten with the FACS signature and clobbering the 8431Global Lock pointer. Also, the actual firmware FACS was being 8432unmapped after construction of the "common" FACS, preventing 8433access to the actual Global Lock field within it. The "common" 8434internal FACS is no longer installed as an actual ACPI table; it 8435is used simply as a global. 8436 8437Code and Data Size: Current core subsystem library sizes are shown 8438below. These are the code and data sizes for the acpica.lib 8439produced by the Microsoft Visual C++ 6.0 compiler, and these 8440values do not include any ACPI driver or OSPM code. The debug 8441version of the code includes the debug output trace mechanism and 8442has a larger code and data size. Note that these values will vary 8443depending on the efficiency of the compiler and the compiler 8444options used during generation. 8445 8446 Previous Release (02_07_01) 8447 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8448 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8449 Current Release: 8450 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8451 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8452 8453 84542) Linux 8455 8456Updated Linux-specific code for core macro and OSL interface 8457changes described above. 8458 8459Improved /proc/acpi/event. It now can be opened only once and has 8460proper poll functionality. 8461 8462Fixed and restructured power management (acpi_bus). 8463 8464Only create /proc "view by type" when devices of that class exist. 8465 8466Fixed "charging/discharging" bug (and others) in acpi_battery. 8467 8468Improved thermal zone code. 8469 8470 84713) ASL Compiler, version X2039: 8472 8473 8474Implemented the new compiler restriction on ASL String hex/octal 8475escapes to non-null, ASCII values. An error results if an invalid 8476value is used. (This will require an ACPI 2.0 specification 8477change.) 8478 8479AML object labels that are output to the optional C and ASM source 8480are now prefixed with both the ACPI table signature and table ID 8481to help guarantee uniqueness within a large BIOS project. 8482 8483 8484---------------------------------------- 8485Summary of changes for this label: 02_01_02 8486 84871) ACPI CA Core Subsystem: 8488 8489ACPI 2.0 support is complete in the entire Core Subsystem and the 8490ASL compiler. All new ACPI 2.0 operators are implemented and all 8491other changes for ACPI 2.0 support are complete. With 8492simultaneous code and data optimizations throughout the subsystem, 8493ACPI 2.0 support has been implemented with almost no additional 8494cost in terms of code and data size. 8495 8496Implemented a new mechanism for allocation of return buffers. If 8497the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8498be allocated on behalf of the caller. Consolidated all return 8499buffer validation and allocation to a common procedure. Return 8500buffers will be allocated via the primary OSL allocation interface 8501since it appears that a separate pool is not needed by most users. 8502If a separate pool is required for these buffers, the caller can 8503still use the original mechanism and pre-allocate the buffer(s). 8504 8505Implemented support for string operands within the DerefOf 8506operator. 8507 8508Restructured the Hardware and Event managers to be table driven, 8509simplifying the source code and reducing the amount of generated 8510code. 8511 8512Split the common read/write low-level ACPI register bitfield 8513procedure into a separate read and write, simplifying the code 8514considerably. 8515 8516Obsoleted the AcpiOsCallocate OSL interface. This interface was 8517used only a handful of times and didn't have enough critical mass 8518for a separate interface. Replaced with a common calloc procedure 8519in the core. 8520 8521Fixed a reported problem with the GPE number mapping mechanism 8522that allows GPE1 numbers to be non-contiguous with GPE0. 8523Reorganized the GPE information and shrunk a large array that was 8524originally large enough to hold info for all possible GPEs (256) 8525to simply large enough to hold all GPEs up to the largest GPE 8526number on the machine. 8527 8528Fixed a reported problem with resource structure alignment on 64- 8529bit platforms. 8530 8531Changed the AcpiEnableEvent and AcpiDisableEvent external 8532interfaces to not require any flags for the common case of 8533enabling/disabling a GPE. 8534 8535Implemented support to allow a "Notify" on a Processor object. 8536 8537Most TBDs in comments within the source code have been resolved 8538and eliminated. 8539 8540 8541Fixed a problem in the interpreter where a standalone parent 8542prefix (^) was not handled correctly in the interpreter and 8543debugger. 8544 8545Removed obsolete and unnecessary GPE save/restore code. 8546 8547Implemented Field support in the ASL Load operator. This allows a 8548table to be loaded from a named field, in addition to loading a 8549table directly from an Operation Region. 8550 8551Implemented timeout and handle support in the external Global Lock 8552interfaces. 8553 8554Fixed a problem in the AcpiDump utility where pathnames were no 8555longer being generated correctly during the dump of named objects. 8556 8557Modified the AML debugger to give a full display of if/while 8558predicates instead of just one AML opcode at a time. (The 8559predicate can have several nested ASL statements.) The old method 8560was confusing during single stepping. 8561 8562Code and Data Size: Current core subsystem library sizes are shown 8563below. These are the code and data sizes for the acpica.lib 8564produced by the Microsoft Visual C++ 6.0 compiler, and these 8565values do not include any ACPI driver or OSPM code. The debug 8566version of the code includes the debug output trace mechanism and 8567has a larger code and data size. Note that these values will vary 8568depending on the efficiency of the compiler and the compiler 8569options used during generation. 8570 8571 Previous Release (12_18_01) 8572 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8573 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8574 Current Release: 8575 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8576 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8577 85782) Linux 8579 8580 Implemented fix for PIIX reverse throttling errata (Processor 8581driver) 8582 8583Added new Limit interface (Processor and Thermal drivers) 8584 8585New thermal policy (Thermal driver) 8586 8587Many updates to /proc 8588 8589Battery "low" event support (Battery driver) 8590 8591Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8592 8593IA32 - IA64 initialization unification, no longer experimental 8594 8595Menuconfig options redesigned 8596 85973) ASL Compiler, version X2037: 8598 8599Implemented several new output features to simplify integration of 8600AML code into firmware: 1) Output the AML in C source code with 8601labels for each named ASL object. The original ASL source code 8602is interleaved as C comments. 2) Output the AML in ASM source code 8603with labels and interleaved ASL source. 3) Output the AML in 8604raw hex table form, in either C or ASM. 8605 8606Implemented support for optional string parameters to the 8607LoadTable operator. 8608 8609Completed support for embedded escape sequences within string 8610literals. The compiler now supports all single character escapes 8611as well as the Octal and Hex escapes. Note: the insertion of a 8612null byte into a string literal (via the hex/octal escape) causes 8613the string to be immediately terminated. A warning is issued. 8614 8615Fixed a problem where incorrect AML was generated for the case 8616where an ASL namepath consists of a single parent prefix ( 8617 8618) with no trailing name segments. 8619 8620The compiler has been successfully generated with a 64-bit C 8621compiler. 8622 8623 8624 8625 8626---------------------------------------- 8627Summary of changes for this label: 12_18_01 8628 86291) Linux 8630 8631Enhanced blacklist with reason and severity fields. Any table's 8632signature may now be used to identify a blacklisted system. 8633 8634Call _PIC control method to inform the firmware which interrupt 8635model the OS is using. Turn on any disabled link devices. 8636 8637Cleaned up busmgr /proc error handling (Andreas Dilger) 8638 8639 2) ACPI CA Core Subsystem: 8640 8641Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8642while loop) 8643 8644Completed implementation of the ACPI 2.0 "Continue", 8645"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8646operators. All new ACPI 2.0 operators are now implemented in both 8647the ASL compiler and the AML interpreter. The only remaining ACPI 86482.0 task is support for the String data type in the DerefOf 8649operator. Fixed a problem with AcquireMutex where the status code 8650was lost if the caller had to actually wait for the mutex. 8651 8652Increased the maximum ASL Field size from 64K bits to 4G bits. 8653 8654Completed implementation of the external Global Lock interfaces -- 8655AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8656Handler parameters were added. 8657 8658Completed another pass at removing warnings and issues when 8659compiling with 64-bit compilers. The code now compiles cleanly 8660with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8661add and subtract (diff) macros have changed considerably. 8662 8663 8664Created and deployed a new ACPI_SIZE type that is 64-bits wide on 866564-bit platforms, 32-bits on all others. This type is used 8666wherever memory allocation and/or the C sizeof() operator is used, 8667and affects the OSL memory allocation interfaces AcpiOsAllocate 8668and AcpiOsCallocate. 8669 8670Implemented sticky user breakpoints in the AML debugger. 8671 8672Code and Data Size: Current core subsystem library sizes are shown 8673below. These are the code and data sizes for the acpica.lib 8674produced by the Microsoft Visual C++ 6.0 compiler, and these 8675values do not include any ACPI driver or OSPM code. The debug 8676version of the code includes the debug output trace mechanism and 8677has a larger code and data size. Note that these values will vary 8678depending on the efficiency of the compiler and the compiler 8679options used during generation. 8680 8681 Previous Release (12_05_01) 8682 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8683 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8684 Current Release: 8685 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8686 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8687 8688 3) ASL Compiler, version X2034: 8689 8690Now checks for (and generates an error if detected) the use of a 8691Break or Continue statement without an enclosing While statement. 8692 8693 8694Successfully generated the compiler with the Intel 64-bit C 8695compiler. 8696 8697 ---------------------------------------- 8698Summary of changes for this label: 12_05_01 8699 8700 1) ACPI CA Core Subsystem: 8701 8702The ACPI 2.0 CopyObject operator is fully implemented. This 8703operator creates a new copy of an object (and is also used to 8704bypass the "implicit conversion" mechanism of the Store operator.) 8705 8706The ACPI 2.0 semantics for the SizeOf operator are fully 8707implemented. The change is that performing a SizeOf on a 8708reference object causes an automatic dereference of the object to 8709tha actual value before the size is evaluated. This behavior was 8710undefined in ACPI 1.0. 8711 8712The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8713have been implemented. The interrupt polarity and mode are now 8714independently set. 8715 8716Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8717appearing in Package objects were not properly converted to 8718integers when the internal Package was converted to an external 8719object (via the AcpiEvaluateObject interface.) 8720 8721Fixed a problem with the namespace object deletion mechanism for 8722objects created by control methods. There were two parts to this 8723problem: 1) Objects created during the initialization phase method 8724parse were not being deleted, and 2) The object owner ID mechanism 8725to track objects was broken. 8726 8727Fixed a problem where the use of the ASL Scope operator within a 8728control method would result in an invalid opcode exception. 8729 8730Fixed a problem introduced in the previous label where the buffer 8731length required for the _PRT structure was not being returned 8732correctly. 8733 8734Code and Data Size: Current core subsystem library sizes are shown 8735below. These are the code and data sizes for the acpica.lib 8736produced by the Microsoft Visual C++ 6.0 compiler, and these 8737values do not include any ACPI driver or OSPM code. The debug 8738version of the code includes the debug output trace mechanism and 8739has a larger code and data size. Note that these values will vary 8740depending on the efficiency of the compiler and the compiler 8741options used during generation. 8742 8743 Previous Release (11_20_01) 8744 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8745 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8746 8747 Current Release: 8748 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8749 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8750 8751 2) Linux: 8752 8753Updated all files to apply cleanly against 2.4.16. 8754 8755Added basic PCI Interrupt Routing Table (PRT) support for IA32 8756(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8757version supports both static and dyanmic PRT entries, but dynamic 8758entries are treated as if they were static (not yet 8759reconfigurable). Architecture- specific code to use this data is 8760absent on IA32 but should be available shortly. 8761 8762Changed the initialization sequence to start the ACPI interpreter 8763(acpi_init) prior to initialization of the PCI driver (pci_init) 8764in init/main.c. This ordering is required to support PRT and 8765facilitate other (future) enhancement. A side effect is that the 8766ACPI bus driver and certain device drivers can no longer be loaded 8767as modules. 8768 8769Modified the 'make menuconfig' options to allow PCI Interrupt 8770Routing support to be included without the ACPI Bus and other 8771device drivers. 8772 8773 3) ASL Compiler, version X2033: 8774 8775Fixed some issues with the use of the new CopyObject and 8776DataTableRegion operators. Both are fully functional. 8777 8778 ---------------------------------------- 8779Summary of changes for this label: 11_20_01 8780 8781 20 November 2001. Summary of changes for this release. 8782 8783 1) ACPI CA Core Subsystem: 8784 8785Updated Index support to match ACPI 2.0 semantics. Storing a 8786Integer, String, or Buffer to an Index of a Buffer will store only 8787the least-significant byte of the source to the Indexed buffer 8788byte. Multiple writes are not performed. 8789 8790Fixed a problem where the access type used in an AccessAs ASL 8791operator was not recorded correctly into the field object. 8792 8793Fixed a problem where ASL Event objects were created in a 8794signalled state. Events are now created in an unsignalled state. 8795 8796The internal object cache is now purged after table loading and 8797initialization to reduce the use of dynamic kernel memory -- on 8798the assumption that object use is greatest during the parse phase 8799of the entire table (versus the run-time use of individual control 8800methods.) 8801 8802ACPI 2.0 variable-length packages are now fully operational. 8803 8804Code and Data Size: Code and Data optimizations have permitted new 8805feature development with an actual reduction in the library size. 8806Current core subsystem library sizes are shown below. These are 8807the code and data sizes for the acpica.lib produced by the 8808Microsoft Visual C++ 6.0 compiler, and these values do not include 8809any ACPI driver or OSPM code. The debug version of the code 8810includes the debug output trace mechanism and has a larger code 8811and data size. Note that these values will vary depending on the 8812efficiency of the compiler and the compiler options used during 8813generation. 8814 8815 Previous Release (11_09_01): 8816 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8817 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8818 8819 Current Release: 8820 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8821 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8822 8823 2) Linux: 8824 8825Enhanced the ACPI boot-time initialization code to allow the use 8826of Local APIC tables for processor enumeration on IA-32, and to 8827pave the way for a fully MPS-free boot (on SMP systems) in the 8828near future. This functionality replaces 8829arch/i386/kernel/acpitables.c, which was introduced in an earlier 88302.4.15-preX release. To enable this feature you must add 8831"acpi_boot=on" to the kernel command line -- see the help entry 8832for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8833the works... 8834 8835Restructured the configuration options to allow boot-time table 8836parsing support without inclusion of the ACPI Interpreter (and 8837other) code. 8838 8839NOTE: This release does not include fixes for the reported events, 8840power-down, and thermal passive cooling issues (coming soon). 8841 8842 3) ASL Compiler: 8843 8844Added additional typechecking for Fields within restricted access 8845Operation Regions. All fields within EC and CMOS regions must be 8846declared with ByteAcc. All fields withing SMBus regions must be 8847declared with the BufferAcc access type. 8848 8849Fixed a problem where the listing file output of control methods 8850no longer interleaved the actual AML code with the ASL source 8851code. 8852 8853 8854 8855 8856---------------------------------------- 8857Summary of changes for this label: 11_09_01 8858 88591) ACPI CA Core Subsystem: 8860 8861Implemented ACPI 2.0-defined support for writes to fields with a 8862Buffer, String, or Integer source operand that is smaller than the 8863target field. In these cases, the source operand is zero-extended 8864to fill the target field. 8865 8866Fixed a problem where a Field starting bit offset (within the 8867parent operation region) was calculated incorrectly if the 8868 8869alignment of the field differed from the access width. This 8870affected CreateWordField, CreateDwordField, CreateQwordField, and 8871possibly other fields that use the "AccessAny" keyword. 8872 8873Fixed a problem introduced in the 11_02_01 release where indirect 8874stores through method arguments did not operate correctly. 8875 88762) Linux: 8877 8878Implemented boot-time ACPI table parsing support 8879(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8880facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8881legacy BIOS interfaces (e.g. MPS) for the configuration of system 8882processors, memory, and interrupts during setup_arch(). Note that 8883this patch does not include the required architecture-specific 8884changes required to apply this information -- subsequent patches 8885will be posted for both IA32 and IA64 to achieve this. 8886 8887Added low-level sleep support for IA32 platforms, courtesy of Pat 8888Mochel. This allows IA32 systems to transition to/from various 8889sleeping states (e.g. S1, S3), although the lack of a centralized 8890driver model and power-manageable drivers will prevent its 8891(successful) use on most systems. 8892 8893Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8894submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8895tables" option, etc. 8896 8897Increased the default timeout for the EC driver from 1ms to 10ms 8898(1000 cycles of 10us) to try to address AE_TIME errors during EC 8899transactions. 8900 8901 ---------------------------------------- 8902Summary of changes for this label: 11_02_01 8903 89041) ACPI CA Core Subsystem: 8905 8906ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8907(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8908implemented. 8909 8910OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8911changes to support ACPI 2.0 Qword field access. Read/Write 8912PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8913accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8914the value parameter for the address space handler interface is now 8915an ACPI_INTEGER. OSL implementations of these interfaces must now 8916handle the case where the Width parameter is 64. 8917 8918Index Fields: Fixed a problem where unaligned bit assembly and 8919disassembly for IndexFields was not supported correctly. 8920 8921Index and Bank Fields: Nested Index and Bank Fields are now 8922supported. During field access, a check is performed to ensure 8923that the value written to an Index or Bank register is not out of 8924the range of the register. The Index (or Bank) register is 8925written before each access to the field data. Future support will 8926include allowing individual IndexFields to be wider than the 8927DataRegister width. 8928 8929Fields: Fixed a problem where the AML interpreter was incorrectly 8930attempting to write beyond the end of a Field/OpRegion. This was 8931a boundary case that occurred when a DWORD field was written to a 8932BYTE access OpRegion, forcing multiple writes and causing the 8933interpreter to write one datum too many. 8934 8935Fields: Fixed a problem with Field/OpRegion access where the 8936starting bit address of a field was incorrectly calculated if the 8937current access type was wider than a byte (WordAcc, DwordAcc, or 8938QwordAcc). 8939 8940Fields: Fixed a problem where forward references to individual 8941FieldUnits (individual Field names within a Field definition) were 8942not resolved during the AML table load. 8943 8944Fields: Fixed a problem where forward references from a Field 8945definition to the parent Operation Region definition were not 8946resolved during the AML table load. 8947 8948Fields: Duplicate FieldUnit names within a scope are now detected 8949during AML table load. 8950 8951Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8952returned an incorrect name for the root node. 8953 8954Code and Data Size: Code and Data optimizations have permitted new 8955feature development with an actual reduction in the library size. 8956Current core subsystem library sizes are shown below. These are 8957the code and data sizes for the acpica.lib produced by the 8958Microsoft Visual C++ 6.0 compiler, and these values do not include 8959any ACPI driver or OSPM code. The debug version of the code 8960includes the debug output trace mechanism and has a larger code 8961and data size. Note that these values will vary depending on the 8962efficiency of the compiler and the compiler options used during 8963generation. 8964 8965 Previous Release (10_18_01): 8966 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8967 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8968 8969 Current Release: 8970 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8971 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8972 8973 2) Linux: 8974 8975Improved /proc processor output (Pavel Machek) Re-added 8976MODULE_LICENSE("GPL") to all modules. 8977 8978 3) ASL Compiler version X2030: 8979 8980Duplicate FieldUnit names within a scope are now detected and 8981flagged as errors. 8982 8983 4) Documentation: 8984 8985Programmer Reference updated to reflect OSL and address space 8986handler interface changes described above. 8987 8988---------------------------------------- 8989Summary of changes for this label: 10_18_01 8990 8991ACPI CA Core Subsystem: 8992 8993Fixed a problem with the internal object reference count mechanism 8994that occasionally caused premature object deletion. This resolves 8995all of the outstanding problem reports where an object is deleted 8996in the middle of an interpreter evaluation. Although this problem 8997only showed up in rather obscure cases, the solution to the 8998problem involved an adjustment of all reference counts involving 8999objects attached to namespace nodes. 9000 9001Fixed a problem with Field support in the interpreter where 9002writing to an aligned field whose length is an exact multiple (2 9003or greater) of the field access granularity would cause an attempt 9004to write beyond the end of the field. 9005 9006The top level AML opcode execution functions within the 9007interpreter have been renamed with a more meaningful and 9008consistent naming convention. The modules exmonad.c and 9009exdyadic.c were eliminated. New modules are exoparg1.c, 9010exoparg2.c, exoparg3.c, and exoparg6.c. 9011 9012Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 9013 9014Fixed a problem where the AML debugger was causing some internal 9015objects to not be deleted during subsystem termination. 9016 9017Fixed a problem with the external AcpiEvaluateObject interface 9018where the subsystem would fault if the named object to be 9019evaluated refered to a constant such as Zero, Ones, etc. 9020 9021Fixed a problem with IndexFields and BankFields where the 9022subsystem would fault if the index, data, or bank registers were 9023not defined in the same scope as the field itself. 9024 9025Added printf format string checking for compilers that support 9026this feature. Corrected more than 50 instances of issues with 9027format specifiers within invocations of ACPI_DEBUG_PRINT 9028throughout the core subsystem code. 9029 9030The ASL "Revision" operator now returns the ACPI support level 9031implemented in the core - the value "2" since the ACPI 2.0 support 9032is more than 50% implemented. 9033 9034Enhanced the output of the AML debugger "dump namespace" command 9035to output in a more human-readable form. 9036 9037Current core subsystem library code sizes are shown below. These 9038 9039are the code and data sizes for the acpica.lib produced by the 9040Microsoft Visual C++ 6.0 compiler, and these values do not include 9041any ACPI driver or OSPM code. The debug version of the code 9042includes the full debug trace mechanism -- leading to a much 9043 9044larger code and data size. Note that these values will vary 9045depending on the efficiency of the compiler and the compiler 9046options used during generation. 9047 9048 Previous Label (09_20_01): 9049 Non-Debug Version: 65K Code, 5K Data, 70K Total 9050 Debug Version: 138K Code, 58K Data, 196K Total 9051 9052 This Label: 9053 9054 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 9055 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 9056 9057Linux: 9058 9059Implemented a "Bad BIOS Blacklist" to track machines that have 9060known ASL/AML problems. 9061 9062Enhanced the /proc interface for the thermal zone driver and added 9063support for _HOT (the critical suspend trip point). The 'info' 9064file now includes threshold/policy information, and allows setting 9065of _SCP (cooling preference) and _TZP (polling frequency) values 9066to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 9067frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 9068preference to the passive/quiet mode (if supported by the ASL). 9069 9070Implemented a workaround for a gcc bug that resuted in an OOPs 9071when loading the control method battery driver. 9072 9073 ---------------------------------------- 9074Summary of changes for this label: 09_20_01 9075 9076 ACPI CA Core Subsystem: 9077 9078The AcpiEnableEvent and AcpiDisableEvent interfaces have been 9079modified to allow individual GPE levels to be flagged as wake- 9080enabled (i.e., these GPEs are to remain enabled when the platform 9081sleeps.) 9082 9083The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 9084support wake-enabled GPEs. This means that upon entering the 9085sleep state, all GPEs that are not wake-enabled are disabled. 9086When leaving the sleep state, these GPEs are reenabled. 9087 9088A local double-precision divide/modulo module has been added to 9089enhance portability to OS kernels where a 64-bit math library is 9090not available. The new module is "utmath.c". 9091 9092Several optimizations have been made to reduce the use of CPU 9093stack. Originally over 2K, the maximum stack usage is now below 90942K at 1860 bytes (1.82k) 9095 9096Fixed a problem with the AcpiGetFirmwareTable interface where the 9097root table pointer was not mapped into a logical address properly. 9098 9099Fixed a problem where a NULL pointer was being dereferenced in the 9100interpreter code for the ASL Notify operator. 9101 9102Fixed a problem where the use of the ASL Revision operator 9103returned an error. This operator now returns the current version 9104of the ACPI CA core subsystem. 9105 9106Fixed a problem where objects passed as control method parameters 9107to AcpiEvaluateObject were always deleted at method termination. 9108However, these objects may end up being stored into the namespace 9109by the called method. The object reference count mechanism was 9110applied to these objects instead of a force delete. 9111 9112Fixed a problem where static strings or buffers (contained in the 9113AML code) that are declared as package elements within the ASL 9114code could cause a fault because the interpreter would attempt to 9115delete them. These objects are now marked with the "static 9116object" flag to prevent any attempt to delete them. 9117 9118Implemented an interpreter optimization to use operands directly 9119from the state object instead of extracting the operands to local 9120variables. This reduces stack use and code size, and improves 9121performance. 9122 9123The module exxface.c was eliminated as it was an unnecessary extra 9124layer of code. 9125 9126Current core subsystem library code sizes are shown below. These 9127are the code and data sizes for the acpica.lib produced by the 9128Microsoft Visual C++ 6.0 compiler, and these values do not include 9129any ACPI driver or OSPM code. The debug version of the code 9130includes the full debug trace mechanism -- leading to a much 9131larger code and data size. Note that these values will vary 9132depending on the efficiency of the compiler and the compiler 9133options used during generation. 9134 9135 Non-Debug Version: 65K Code, 5K Data, 70K Total 9136(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 9137Total (Previously 195K) 9138 9139Linux: 9140 9141Support for ACPI 2.0 64-bit integers has been added. All ACPI 9142Integer objects are now 64 bits wide 9143 9144All Acpi data types and structures are now in lower case. Only 9145Acpi macros are upper case for differentiation. 9146 9147 Documentation: 9148 9149Changes to the external interfaces as described above. 9150 9151 ---------------------------------------- 9152Summary of changes for this label: 08_31_01 9153 9154 ACPI CA Core Subsystem: 9155 9156A bug with interpreter implementation of the ASL Divide operator 9157was found and fixed. The implicit function return value (not the 9158explicit store operands) was returning the remainder instead of 9159the quotient. This was a longstanding bug and it fixes several 9160known outstanding issues on various platforms. 9161 9162The ACPI_DEBUG_PRINT and function trace entry/exit macros have 9163been further optimized for size. There are 700 invocations of the 9164DEBUG_PRINT macro alone, so each optimization reduces the size of 9165the debug version of the subsystem significantly. 9166 9167A stack trace mechanism has been implemented. The maximum stack 9168usage is about 2K on 32-bit platforms. The debugger command "stat 9169stack" will display the current maximum stack usage. 9170 9171All public symbols and global variables within the subsystem are 9172now prefixed with the string "Acpi". This keeps all of the 9173symbols grouped together in a kernel map, and avoids conflicts 9174with other kernel subsystems. 9175 9176Most of the internal fixed lookup tables have been moved into the 9177code segment via the const operator. 9178 9179Several enhancements have been made to the interpreter to both 9180reduce the code size and improve performance. 9181 9182Current core subsystem library code sizes are shown below. These 9183are the code and data sizes for the acpica.lib produced by the 9184Microsoft Visual C++ 6.0 compiler, and these values do not include 9185any ACPI driver or OSPM code. The debug version of the code 9186includes the full debug trace mechanism which contains over 700 9187invocations of the DEBUG_PRINT macro, 500 function entry macro 9188invocations, and over 900 function exit macro invocations -- 9189leading to a much larger code and data size. Note that these 9190values will vary depending on the efficiency of the compiler and 9191the compiler options used during generation. 9192 9193 Non-Debug Version: 64K Code, 5K Data, 69K Total 9194Debug Version: 137K Code, 58K Data, 195K Total 9195 9196 Linux: 9197 9198Implemented wbinvd() macro, pending a kernel-wide definition. 9199 9200Fixed /proc/acpi/event to handle poll() and short reads. 9201 9202 ASL Compiler, version X2026: 9203 9204Fixed a problem introduced in the previous label where the AML 9205 9206code emitted for package objects produced packages with zero 9207length. 9208 9209 ---------------------------------------- 9210Summary of changes for this label: 08_16_01 9211 9212ACPI CA Core Subsystem: 9213 9214The following ACPI 2.0 ASL operators have been implemented in the 9215AML interpreter (These are already supported by the Intel ASL 9216compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 9217ToBuffer. Support for 64-bit AML constants is implemented in the 9218AML parser, debugger, and disassembler. 9219 9220The internal memory tracking mechanism (leak detection code) has 9221been upgraded to reduce the memory overhead (a separate tracking 9222block is no longer allocated for each memory allocation), and now 9223supports all of the internal object caches. 9224 9225The data structures and code for the internal object caches have 9226been coelesced and optimized so that there is a single cache and 9227memory list data structure and a single group of functions that 9228implement generic cache management. This has reduced the code 9229size in both the debug and release versions of the subsystem. 9230 9231The DEBUG_PRINT macro(s) have been optimized for size and replaced 9232by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 9233different, because it generates a single call to an internal 9234function. This results in a savings of about 90 bytes per 9235invocation, resulting in an overall code and data savings of about 923616% in the debug version of the subsystem. 9237 9238 Linux: 9239 9240Fixed C3 disk corruption problems and re-enabled C3 on supporting 9241machines. 9242 9243Integrated low-level sleep code by Patrick Mochel. 9244 9245Further tweaked source code Linuxization. 9246 9247Other minor fixes. 9248 9249 ASL Compiler: 9250 9251Support for ACPI 2.0 variable length packages is fixed/completed. 9252 9253Fixed a problem where the optional length parameter for the ACPI 92542.0 ToString operator. 9255 9256Fixed multiple extraneous error messages when a syntax error is 9257detected within the declaration line of a control method. 9258 9259 ---------------------------------------- 9260Summary of changes for this label: 07_17_01 9261 9262ACPI CA Core Subsystem: 9263 9264Added a new interface named AcpiGetFirmwareTable to obtain any 9265ACPI table via the ACPI signature. The interface can be called at 9266any time during kernel initialization, even before the kernel 9267virtual memory manager is initialized and paging is enabled. This 9268allows kernel subsystems to obtain ACPI tables very early, even 9269before the ACPI CA subsystem is initialized. 9270 9271Fixed a problem where Fields defined with the AnyAcc attribute 9272could be resolved to the incorrect address under the following 9273conditions: 1) the field width is larger than 8 bits and 2) the 9274parent operation region is not defined on a DWORD boundary. 9275 9276Fixed a problem where the interpreter is not being locked during 9277namespace initialization (during execution of the _INI control 9278methods), causing an error when an attempt is made to release it 9279later. 9280 9281ACPI 2.0 support in the AML Interpreter has begun and will be 9282ongoing throughout the rest of this year. In this label, The Mod 9283operator is implemented. 9284 9285Added a new data type to contain full PCI addresses named 9286ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 9287and Function values. 9288 9289 Linux: 9290 9291Enhanced the Linux version of the source code to change most 9292capitalized ACPI type names to lowercase. For example, all 9293instances of ACPI_STATUS are changed to acpi_status. This will 9294result in a large diff, but the change is strictly cosmetic and 9295aligns the CA code closer to the Linux coding standard. 9296 9297OSL Interfaces: 9298 9299The interfaces to the PCI configuration space have been changed to 9300add the PCI Segment number and to split the single 32-bit combined 9301DeviceFunction field into two 16-bit fields. This was 9302accomplished by moving the four values that define an address in 9303PCI configuration space (segment, bus, device, and function) to 9304the new ACPI_PCI_ID structure. 9305 9306The changes to the PCI configuration space interfaces led to a 9307reexamination of the complete set of address space access 9308interfaces for PCI, I/O, and Memory. The previously existing 18 9309interfaces have proven difficult to maintain (any small change 9310must be propagated across at least 6 interfaces) and do not easily 9311allow for future expansion to 64 bits if necessary. Also, on some 9312systems, it would not be appropriate to demultiplex the access 9313width (8, 16, 32,or 64) before calling the OSL if the 9314corresponding native OS interfaces contain a similar access width 9315parameter. For these reasons, the 18 address space interfaces 9316have been replaced by these 6 new ones: 9317 9318AcpiOsReadPciConfiguration 9319AcpiOsWritePciConfiguration 9320AcpiOsReadMemory 9321AcpiOsWriteMemory 9322AcpiOsReadPort 9323AcpiOsWritePort 9324 9325Added a new interface named AcpiOsGetRootPointer to allow the OSL 9326to perform the platform and/or OS-specific actions necessary to 9327obtain the ACPI RSDP table pointer. On IA-32 platforms, this 9328interface will simply call down to the CA core to perform the low- 9329memory search for the table. On IA-64, the RSDP is obtained from 9330EFI. Migrating this interface to the OSL allows the CA core to 9331 9332remain OS and platform independent. 9333 9334Added a new interface named AcpiOsSignal to provide a generic 9335"function code and pointer" interface for various miscellaneous 9336signals and notifications that must be made to the host OS. The 9337first such signals are intended to support the ASL Fatal and 9338Breakpoint operators. In the latter case, the AcpiOsBreakpoint 9339interface has been obsoleted. 9340 9341The definition of the AcpiFormatException interface has been 9342changed to simplify its use. The caller no longer must supply a 9343buffer to the call; A pointer to a const string is now returned 9344directly. This allows the call to be easily used in printf 9345statements, etc. since the caller does not have to manage a local 9346buffer. 9347 9348 9349 ASL Compiler, Version X2025: 9350 9351The ACPI 2.0 Switch/Case/Default operators have been implemented 9352and are fully functional. They will work with all ACPI 1.0 9353interpreters, since the operators are simply translated to If/Else 9354pairs. 9355 9356The ACPI 2.0 ElseIf operator is implemented and will also work 9357with 1.0 interpreters, for the same reason. 9358 9359Implemented support for ACPI 2.0 variable-length packages. These 9360packages have a separate opcode, and their size is determined by 9361the interpreter at run-time. 9362 9363Documentation The ACPI CA Programmer Reference has been updated to 9364reflect the new interfaces and changes to existing interfaces. 9365 9366 ------------------------------------------ 9367Summary of changes for this label: 06_15_01 9368 9369 ACPI CA Core Subsystem: 9370 9371Fixed a problem where a DWORD-accessed field within a Buffer 9372object would get its byte address inadvertently rounded down to 9373the nearest DWORD. Buffers are always Byte-accessible. 9374 9375 ASL Compiler, version X2024: 9376 9377Fixed a problem where the Switch() operator would either fault or 9378hang the compiler. Note however, that the AML code for this ACPI 93792.0 operator is not yet implemented. 9380 9381Compiler uses the new AcpiOsGetTimer interface to obtain compile 9382timings. 9383 9384Implementation of the CreateField operator automatically converts 9385a reference to a named field within a resource descriptor from a 9386byte offset to a bit offset if required. 9387 9388Added some missing named fields from the resource descriptor 9389support. These are the names that are automatically created by the 9390compiler to reference fields within a descriptor. They are only 9391valid at compile time and are not passed through to the AML 9392interpreter. 9393 9394Resource descriptor named fields are now typed as Integers and 9395subject to compile-time typechecking when used in expressions. 9396 9397 ------------------------------------------ 9398Summary of changes for this label: 05_18_01 9399 9400 ACPI CA Core Subsystem: 9401 9402Fixed a couple of problems in the Field support code where bits 9403from adjacent fields could be returned along with the proper field 9404bits. Restructured the field support code to improve performance, 9405readability and maintainability. 9406 9407New DEBUG_PRINTP macro automatically inserts the procedure name 9408into the output, saving hundreds of copies of procedure name 9409strings within the source, shrinking the memory footprint of the 9410debug version of the core subsystem. 9411 9412 Source Code Structure: 9413 9414The source code directory tree was restructured to reflect the 9415current organization of the component architecture. Some files 9416and directories have been moved and/or renamed. 9417 9418 Linux: 9419 9420Fixed leaking kacpidpc processes. 9421 9422Fixed queueing event data even when /proc/acpi/event is not 9423opened. 9424 9425 ASL Compiler, version X2020: 9426 9427Memory allocation performance enhancement - over 24X compile time 9428improvement on large ASL files. Parse nodes and namestring 9429buffers are now allocated from a large internal compiler buffer. 9430 9431The temporary .SRC file is deleted unless the "-s" option is 9432specified 9433 9434The "-d" debug output option now sends all output to the .DBG file 9435instead of the console. 9436 9437"External" second parameter is now optional 9438 9439"ElseIf" syntax now properly allows the predicate 9440 9441Last operand to "Load" now recognized as a Target operand 9442 9443Debug object can now be used anywhere as a normal object. 9444 9445ResourceTemplate now returns an object of type BUFFER 9446 9447EISAID now returns an object of type INTEGER 9448 9449"Index" now works with a STRING operand 9450 9451"LoadTable" now accepts optional parameters 9452 9453"ToString" length parameter is now optional 9454 9455"Interrupt (ResourceType," parse error fixed. 9456 9457"Register" with a user-defined region space parse error fixed 9458 9459Escaped backslash at the end of a string ("\\") scan/parse error 9460fixed 9461 9462"Revision" is now an object of type INTEGER. 9463 9464 9465 9466------------------------------------------ 9467Summary of changes for this label: 05_02_01 9468 9469Linux: 9470 9471/proc/acpi/event now blocks properly. 9472 9473Removed /proc/sys/acpi. You can still dump your DSDT from 9474/proc/acpi/dsdt. 9475 9476 ACPI CA Core Subsystem: 9477 9478Fixed a problem introduced in the previous label where some of the 9479"small" resource descriptor types were not recognized. 9480 9481Improved error messages for the case where an ASL Field is outside 9482the range of the parent operation region. 9483 9484 ASL Compiler, version X2018: 9485 9486 9487Added error detection for ASL Fields that extend beyond the length 9488of the parent operation region (only if the length of the region 9489is known at compile time.) This includes fields that have a 9490minimum access width that is smaller than the parent region, and 9491individual field units that are partially or entirely beyond the 9492extent of the parent. 9493 9494 9495 9496------------------------------------------ 9497Summary of changes for this label: 04_27_01 9498 9499 ACPI CA Core Subsystem: 9500 9501Fixed a problem where the namespace mutex could be released at the 9502wrong time during execution of AcpiRemoveAddressSpaceHandler. 9503 9504Added optional thread ID output for debug traces, to simplify 9505debugging of multiple threads. Added context switch notification 9506when the debug code realizes that a different thread is now 9507executing ACPI code. 9508 9509Some additional external data types have been prefixed with the 9510string "ACPI_" for consistency. This may effect existing code. 9511The data types affected are the external callback typedefs - e.g., 9512 9513WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9514 9515 Linux: 9516 9517Fixed an issue with the OSL semaphore implementation where a 9518thread was waking up with an error from receiving a SIGCHLD 9519signal. 9520 9521Linux version of ACPI CA now uses the system C library for string 9522manipulation routines instead of a local implementation. 9523 9524Cleaned up comments and removed TBDs. 9525 9526 ASL Compiler, version X2017: 9527 9528Enhanced error detection and reporting for all file I/O 9529operations. 9530 9531 Documentation: 9532 9533Programmer Reference updated to version 1.06. 9534 9535 9536 9537------------------------------------------ 9538Summary of changes for this label: 04_13_01 9539 9540 ACPI CA Core Subsystem: 9541 9542Restructured support for BufferFields and RegionFields. 9543BankFields support is now fully operational. All known 32-bit 9544limitations on field sizes have been removed. Both BufferFields 9545and (Operation) RegionFields are now supported by the same field 9546management code. 9547 9548Resource support now supports QWORD address and IO resources. The 954916/32/64 bit address structures and the Extended IRQ structure 9550have been changed to properly handle Source Resource strings. 9551 9552A ThreadId of -1 is now used to indicate a "mutex not acquired" 9553condition internally and must never be returned by AcpiOsThreadId. 9554This reserved value was changed from 0 since Unix systems allow a 9555thread ID of 0. 9556 9557Linux: 9558 9559Driver code reorganized to enhance portability 9560 9561Added a kernel configuration option to control ACPI_DEBUG 9562 9563Fixed the EC driver to honor _GLK. 9564 9565ASL Compiler, version X2016: 9566 9567Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9568address space was set to 0, not 0x7f as it should be. 9569 9570 ------------------------------------------ 9571Summary of changes for this label: 03_13_01 9572 9573 ACPI CA Core Subsystem: 9574 9575During ACPI initialization, the _SB_._INI method is now run if 9576present. 9577 9578Notify handler fix - notifies are deferred until the parent method 9579completes execution. This fixes the "mutex already acquired" 9580issue seen occasionally. 9581 9582Part of the "implicit conversion" rules in ACPI 2.0 have been 9583found to cause compatibility problems with existing ASL/AML. The 9584convert "result-to-target-type" implementation has been removed 9585for stores to method Args and Locals. Source operand conversion 9586is still fully implemented. Possible changes to ACPI 2.0 9587specification pending. 9588 9589Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9590length. 9591 9592Fix for compiler warnings for 64-bit compiles. 9593 9594 Linux: 9595 9596/proc output aligned for easier parsing. 9597 9598Release-version compile problem fixed. 9599 9600New kernel configuration options documented in Configure.help. 9601 9602IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9603context" message. 9604 9605 OSPM: 9606 9607Power resource driver integrated with bus manager. 9608 9609Fixed kernel fault during active cooling for thermal zones. 9610 9611Source Code: 9612 9613The source code tree has been restructured. 9614 9615 9616 9617------------------------------------------ 9618Summary of changes for this label: 03_02_01 9619 9620 Linux OS Services Layer (OSL): 9621 9622Major revision of all Linux-specific code. 9623 9624Modularized all ACPI-specific drivers. 9625 9626Added new thermal zone and power resource drivers. 9627 9628Revamped /proc interface (new functionality is under /proc/acpi). 9629 9630New kernel configuration options. 9631 9632 Linux known issues: 9633 9634New kernel configuration options not documented in Configure.help 9635yet. 9636 9637 9638Module dependencies not currently implemented. If used, they 9639should be loaded in this order: busmgr, power, ec, system, 9640processor, battery, ac_adapter, button, thermal. 9641 9642Modules will not load if CONFIG_MODVERSION is set. 9643 9644IBM 600E - entering S5 may reboot instead of shutting down. 9645 9646IBM 600E - Sleep button may generate "Invalid <NULL> context" 9647message. 9648 9649Some systems may fail with "execution mutex already acquired" 9650message. 9651 9652 ACPI CA Core Subsystem: 9653 9654Added a new OSL Interface, AcpiOsGetThreadId. This was required 9655for the deadlock detection code. Defined to return a non-zero, 32- 9656bit thread ID for the currently executing thread. May be a non- 9657zero constant integer on single-thread systems. 9658 9659Implemented deadlock detection for internal subsystem mutexes. We 9660may add conditional compilation for this code (debug only) later. 9661 9662ASL/AML Mutex object semantics are now fully supported. This 9663includes multiple acquires/releases by owner and support for the 9664 9665Mutex SyncLevel parameter. 9666 9667A new "Force Release" mechanism automatically frees all ASL 9668Mutexes that have been acquired but not released when a thread 9669exits the interpreter. This forces conformance to the ACPI spec 9670("All mutexes must be released when an invocation exits") and 9671prevents deadlocked ASL threads. This mechanism can be expanded 9672(later) to monitor other resource acquisitions if OEM ASL code 9673continues to misbehave (which it will). 9674 9675Several new ACPI exception codes have been added for the Mutex 9676support. 9677 9678Recursive method calls are now allowed and supported (the ACPI 9679spec does in fact allow recursive method calls.) The number of 9680recursive calls is subject to the restrictions imposed by the 9681SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9682parameter. 9683 9684Implemented support for the SyncLevel parameter for control 9685methods (ACPI 2.0 feature) 9686 9687Fixed a deadlock problem when multiple threads attempted to use 9688the interpreter. 9689 9690Fixed a problem where the string length of a String package 9691element was not always set in a package returned from 9692AcpiEvaluateObject. 9693 9694Fixed a problem where the length of a String package element was 9695not always included in the length of the overall package returned 9696from AcpiEvaluateObject. 9697 9698Added external interfaces (Acpi*) to the ACPI debug memory 9699manager. This manager keeps a list of all outstanding 9700allocations, and can therefore detect memory leaks and attempts to 9701free memory blocks more than once. Useful for code such as the 9702power manager, etc. May not be appropriate for device drivers. 9703Performance with the debug code enabled is slow. 9704 9705The ACPI Global Lock is now an optional hardware element. 9706 9707 ASL Compiler Version X2015: 9708 9709Integrated changes to allow the compiler to be generated on 9710multiple platforms. 9711 9712Linux makefile added to generate the compiler on Linux 9713 9714 Source Code: 9715 9716All platform-specific headers have been moved to their own 9717subdirectory, Include/Platform. 9718 9719New source file added, Interpreter/ammutex.c 9720 9721New header file, Include/acstruct.h 9722 9723 Documentation: 9724 9725The programmer reference has been updated for the following new 9726interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9727 9728 ------------------------------------------ 9729Summary of changes for this label: 02_08_01 9730 9731Core ACPI CA Subsystem: Fixed a problem where an error was 9732incorrectly returned if the return resource buffer was larger than 9733the actual data (in the resource interfaces). 9734 9735References to named objects within packages are resolved to the 9736 9737full pathname string before packages are returned directly (via 9738the AcpiEvaluateObject interface) or indirectly via the resource 9739interfaces. 9740 9741Linux OS Services Layer (OSL): 9742 9743Improved /proc battery interface. 9744 9745 9746Added C-state debugging output and other miscellaneous fixes. 9747 9748ASL Compiler Version X2014: 9749 9750All defined method arguments can now be used as local variables, 9751including the ones that are not actually passed in as parameters. 9752The compiler tracks initialization of the arguments and issues an 9753exception if they are used without prior assignment (just like 9754locals). 9755 9756The -o option now specifies a filename prefix that is used for all 9757output files, including the AML output file. Otherwise, the 9758default behavior is as follows: 1) the AML goes to the file 9759specified in the DSDT. 2) all other output files use the input 9760source filename as the base. 9761 9762 ------------------------------------------ 9763Summary of changes for this label: 01_25_01 9764 9765Core ACPI CA Subsystem: Restructured the implementation of object 9766store support within the interpreter. This includes support for 9767the Store operator as well as any ASL operators that include a 9768target operand. 9769 9770Partially implemented support for Implicit Result-to-Target 9771conversion. This is when a result object is converted on the fly 9772to the type of an existing target object. Completion of this 9773support is pending further analysis of the ACPI specification 9774concerning this matter. 9775 9776CPU-specific code has been removed from the subsystem (hardware 9777directory). 9778 9779New Power Management Timer functions added 9780 9781Linux OS Services Layer (OSL): Moved system state transition code 9782to the core, fixed it, and modified Linux OSL accordingly. 9783 9784Fixed C2 and C3 latency calculations. 9785 9786 9787We no longer use the compilation date for the version message on 9788initialization, but retrieve the version from AcpiGetSystemInfo(). 9789 9790Incorporated for fix Sony VAIO machines. 9791 9792Documentation: The Programmer Reference has been updated and 9793reformatted. 9794 9795 9796ASL Compiler: Version X2013: Fixed a problem where the line 9797numbering and error reporting could get out of sync in the 9798presence of multiple include files. 9799 9800 ------------------------------------------ 9801Summary of changes for this label: 01_15_01 9802 9803Core ACPI CA Subsystem: 9804 9805Implemented support for type conversions in the execution of the 9806ASL Concatenate operator (The second operand is converted to 9807match the type of the first operand before concatenation.) 9808 9809Support for implicit source operand conversion is partially 9810implemented. The ASL source operand types Integer, Buffer, and 9811String are freely interchangeable for most ASL operators and are 9812converted by the interpreter on the fly as required. Implicit 9813Target operand conversion (where the result is converted to the 9814target type before storing) is not yet implemented. 9815 9816Support for 32-bit and 64-bit BCD integers is implemented. 9817 9818Problem fixed where a field read on an aligned field could cause a 9819read past the end of the field. 9820 9821New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9822does not return a value, but the caller expects one. (The ASL 9823compiler flags this as a warning.) 9824 9825ASL Compiler: 9826 9827Version X2011: 98281. Static typechecking of all operands is implemented. This 9829prevents the use of invalid objects (such as using a Package where 9830an Integer is required) at compile time instead of at interpreter 9831run-time. 98322. The ASL source line is printed with ALL errors and warnings. 98333. Bug fix for source EOF without final linefeed. 98344. Debug option is split into a parse trace and a namespace trace. 98355. Namespace output option (-n) includes initial values for 9836integers and strings. 98376. Parse-only option added for quick syntax checking. 98387. Compiler checks for duplicate ACPI name declarations 9839 9840Version X2012: 98411. Relaxed typechecking to allow interchangeability between 9842strings, integers, and buffers. These types are now converted by 9843the interpreter at runtime. 98442. Compiler reports time taken by each internal subsystem in the 9845debug output file. 9846 9847 9848 ------------------------------------------ 9849Summary of changes for this label: 12_14_00 9850 9851ASL Compiler: 9852 9853This is the first official release of the compiler. Since the 9854compiler requires elements of the Core Subsystem, this label 9855synchronizes everything. 9856 9857------------------------------------------ 9858Summary of changes for this label: 12_08_00 9859 9860 9861Fixed a problem where named references within the ASL definition 9862of both OperationRegions and CreateXXXFields did not work 9863properly. The symptom was an AE_AML_OPERAND_TYPE during 9864initialization of the region/field. This is similar (but not 9865related internally) to the problem that was fixed in the last 9866label. 9867 9868Implemented both 32-bit and 64-bit support for the BCD ASL 9869functions ToBCD and FromBCD. 9870 9871Updated all legal headers to include "2000" in the copyright 9872years. 9873 9874 ------------------------------------------ 9875Summary of changes for this label: 12_01_00 9876 9877Fixed a problem where method invocations within the ASL definition 9878of both OperationRegions and CreateXXXFields did not work 9879properly. The symptom was an AE_AML_OPERAND_TYPE during 9880initialization of the region/field: 9881 9882 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9883[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9884(0x3005) 9885 9886Fixed a problem where operators with more than one nested 9887subexpression would fail. The symptoms were varied, by mostly 9888AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9889problem that has gone unnoticed until now. 9890 9891 Subtract (Add (1,2), Multiply (3,4)) 9892 9893Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9894previous build (The prefix part of a relative path was handled 9895incorrectly). 9896 9897Fixed a problem where Operation Region initialization failed if 9898the operation region name was a "namepath" instead of a simple 9899"nameseg". Symptom was an AE_NO_OPERAND error. 9900 9901Fixed a problem where an assignment to a local variable via the 9902indirect RefOf mechanism only worked for the first such 9903assignment. Subsequent assignments were ignored. 9904 9905 ------------------------------------------ 9906Summary of changes for this label: 11_15_00 9907 9908ACPI 2.0 table support with backwards support for ACPI 1.0 and the 99090.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9910the AML interpreter does NOT have support for the new 2.0 ASL 9911grammar terms at this time. 9912 9913All ACPI hardware access is via the GAS structures in the ACPI 2.0 9914FADT. 9915 9916All physical memory addresses across all platforms are now 64 bits 9917wide. Logical address width remains dependent on the platform 9918(i.e., "void *"). 9919 9920AcpiOsMapMemory interface changed to a 64-bit physical address. 9921 9922The AML interpreter integer size is now 64 bits, as per the ACPI 99232.0 specification. 9924 9925For backwards compatibility with ACPI 1.0, ACPI tables with a 9926revision number less than 2 use 32-bit integers only. 9927 9928Fixed a problem where the evaluation of OpRegion operands did not 9929always resolve them to numbers properly. 9930 9931------------------------------------------ 9932Summary of changes for this label: 10_20_00 9933 9934Fix for CBN_._STA issue. This fix will allow correct access to 9935CBN_ OpRegions when the _STA returns 0x8. 9936 9937Support to convert ACPI constants (Ones, Zeros, One) to actual 9938values before a package object is returned 9939 9940Fix for method call as predicate to if/while construct causing 9941incorrect if/while behavior 9942 9943Fix for Else block package lengths sometimes calculated wrong (if 9944block > 63 bytes) 9945 9946Fix for Processor object length field, was always zero 9947 9948Table load abort if FACP sanity check fails 9949 9950Fix for problem with Scope(name) if name already exists 9951 9952Warning emitted if a named object referenced cannot be found 9953(resolved) during method execution. 9954 9955 9956 9957 9958 9959------------------------------------------ 9960Summary of changes for this label: 9_29_00 9961 9962New table initialization interfaces: AcpiInitializeSubsystem no 9963longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9964necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9965>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9966AcpiLoadTables 9967 9968Note: These interface changes require changes to all existing OSDs 9969 9970The PCI_Config default address space handler is always installed 9971at the root namespace object. 9972 9973------------------------------------------- 9974Summary of changes for this label: 09_15_00 9975 9976The new initialization architecture is implemented. New 9977interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9978AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9979 9980(Namespace is automatically loaded when a table is loaded) 9981 9982The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 998352 bytes to 32 bytes. There is usually one of these for every 9984namespace object, so the memory savings is significant. 9985 9986Implemented just-in-time evaluation of the CreateField operators. 9987 9988Bug fixes for IA-64 support have been integrated. 9989 9990Additional code review comments have been implemented 9991 9992The so-called "third pass parse" has been replaced by a final walk 9993through the namespace to initialize all operation regions (address 9994spaces) and fields that have not yet been initialized during the 9995execution of the various _INI and REG methods. 9996 9997New file - namespace/nsinit.c 9998 9999------------------------------------------- 10000Summary of changes for this label: 09_01_00 10001 10002Namespace manager data structures have been reworked to change the 10003primary object from a table to a single object. This has 10004resulted in dynamic memory savings of 3X within the namespace and 100052X overall in the ACPI CA subsystem. 10006 10007Fixed problem where the call to AcpiEvFindPciRootBuses was 10008inadvertently left commented out. 10009 10010Reduced the warning count when generating the source with the GCC 10011compiler. 10012 10013Revision numbers added to each module header showing the 10014SourceSafe version of the file. Please refer to this version 10015number when giving us feedback or comments on individual modules. 10016 10017The main object types within the subsystem have been renamed to 10018clarify their purpose: 10019 10020ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 10021ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 10022ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 10023 10024NOTE: no changes to the initialization sequence are included in 10025this label. 10026 10027------------------------------------------- 10028Summary of changes for this label: 08_23_00 10029 10030Fixed problem where TerminateControlMethod was being called 10031multiple times per method 10032 10033Fixed debugger problem where single stepping caused a semaphore to 10034be oversignalled 10035 10036Improved performance through additional parse object caching - 10037added ACPI_EXTENDED_OP type 10038 10039------------------------------------------- 10040Summary of changes for this label: 08_10_00 10041 10042Parser/Interpreter integration: Eliminated the creation of 10043complete parse trees for ACPI tables and control methods. 10044Instead, parse subtrees are created and then deleted as soon as 10045they are processed (Either entered into the namespace or executed 10046by the interpreter). This reduces the use of dynamic kernel 10047memory significantly. (about 10X) 10048 10049Exception codes broken into classes and renumbered. Be sure to 10050recompile all code that includes acexcep.h. Hopefully we won't 10051have to renumber the codes again now that they are split into 10052classes (environment, programmer, AML code, ACPI table, and 10053internal). 10054 10055Fixed some additional alignment issues in the Resource Manager 10056subcomponent 10057 10058Implemented semaphore tracking in the AcpiExec utility, and fixed 10059several places where mutexes/semaphores were being unlocked 10060without a corresponding lock operation. There are no known 10061semaphore or mutex "leaks" at this time. 10062 10063Fixed the case where an ASL Return operator is used to return an 10064unnamed package. 10065 10066------------------------------------------- 10067Summary of changes for this label: 07_28_00 10068 10069Fixed a problem with the way addresses were calculated in 10070AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 10071manifested itself when a Field was created with WordAccess or 10072DwordAccess, but the field unit defined within the Field was less 10073 10074than a Word or Dword. 10075 10076Fixed a problem in AmlDumpOperands() module's loop to pull 10077operands off of the operand stack to display information. The 10078problem manifested itself as a TLB error on 64-bit systems when 10079accessing an operand stack with two or more operands. 10080 10081Fixed a problem with the PCI configuration space handlers where 10082context was getting confused between accesses. This required a 10083change to the generic address space handler and address space 10084setup definitions. Handlers now get both a global handler context 10085(this is the one passed in by the user when executing 10086AcpiInstallAddressSpaceHandler() and a specific region context 10087that is unique to each region (For example, the _ADR, _SEG and 10088_BBN values associated with a specific region). The generic 10089function definitions have changed to the following: 10090 10091typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 10092UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 10093*HandlerContext, // This used to be void *Context void 10094*RegionContext); // This is an additional parameter 10095 10096typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 10097RegionHandle, UINT32 Function, void *HandlerContext, void 10098**RegionContext); // This used to be **ReturnContext 10099 10100------------------------------------------- 10101Summary of changes for this label: 07_21_00 10102 10103Major file consolidation and rename. All files within the 10104interpreter have been renamed as well as most header files. This 10105was done to prevent collisions with existing files in the host 10106OSs -- filenames such as "config.h" and "global.h" seem to be 10107quite common. The VC project files have been updated. All 10108makefiles will require modification. 10109 10110The parser/interpreter integration continues in Phase 5 with the 10111implementation of a complete 2-pass parse (the AML is parsed 10112twice) for each table; This avoids the construction of a huge 10113parse tree and therefore reduces the amount of dynamic memory 10114required by the subsystem. Greater use of the parse object cache 10115means that performance is unaffected. 10116 10117Many comments from the two code reviews have been rolled in. 10118 10119The 64-bit alignment support is complete. 10120 10121------------------------------------------- 10122Summary of changes for this label: 06_30_00 10123 10124With a nod and a tip of the hat to the technology of yesteryear, 10125we've added support in the source code for 80 column output 10126devices. The code is now mostly constrained to 80 columns or 10127less to support environments and editors that 1) cannot display 10128or print more than 80 characters on a single line, and 2) cannot 10129disable line wrapping. 10130 10131A major restructuring of the namespace data structure has been 10132completed. The result is 1) cleaner and more 10133understandable/maintainable code, and 2) a significant reduction 10134in the dynamic memory requirement for each named ACPI object 10135(almost half). 10136 10137------------------------------------------- 10138Summary of changes for this label: 06_23_00 10139 10140Linux support has been added. In order to obtain approval to get 10141the ACPI CA subsystem into the Linux kernel, we've had to make 10142quite a few changes to the base subsystem that will affect all 10143users (all the changes are generic and OS- independent). The 10144effects of these global changes have been somewhat far reaching. 10145Files have been merged and/or renamed and interfaces have been 10146renamed. The major changes are described below. 10147 10148Osd* interfaces renamed to AcpiOs* to eliminate namespace 10149pollution/confusion within our target kernels. All OSD 10150interfaces must be modified to match the new naming convention. 10151 10152Files merged across the subsystem. A number of the smaller source 10153and header files have been merged to reduce the file count and 10154increase the density of the existing files. There are too many 10155to list here. In general, makefiles that call out individual 10156files will require rebuilding. 10157 10158Interpreter files renamed. All interpreter files now have the 10159prefix am* instead of ie* and is*. 10160 10161Header files renamed: The acapi.h file is now acpixf.h. The 10162acpiosd.h file is now acpiosxf.h. We are removing references to 10163the acronym "API" since it is somewhat windowsy. The new name is 10164"external interface" or xface or xf in the filenames.j 10165 10166 10167All manifest constants have been forced to upper case (some were 10168mixed case.) Also, the string "ACPI_" has been prepended to many 10169(not all) of the constants, typedefs, and structs. 10170 10171The globals "DebugLevel" and "DebugLayer" have been renamed 10172"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 10173 10174All other globals within the subsystem are now prefixed with 10175"AcpiGbl_" Internal procedures within the subsystem are now 10176prefixed with "Acpi" (with only a few exceptions). The original 10177two-letter abbreviation for the subcomponent remains after "Acpi" 10178- for example, CmCallocate became AcpiCmCallocate. 10179 10180Added a source code translation/conversion utility. Used to 10181generate the Linux source code, it can be modified to generate 10182other types of source as well. Can also be used to cleanup 10183existing source by removing extraneous spaces and blank lines. 10184Found in tools/acpisrc/* 10185 10186OsdUnMapMemory was renamed to OsdUnmapMemory and then 10187AcpiOsUnmapMemory. (UnMap became Unmap). 10188 10189A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 10190When set to one, this indicates that the caller wants to use the 10191 10192semaphore as a mutex, not a counting semaphore. ACPI CA uses 10193both types. However, implementers of this call may want to use 10194different OS primitives depending on the type of semaphore 10195requested. For example, some operating systems provide separate 10196 10197"mutex" and "semaphore" interfaces - where the mutex interface is 10198much faster because it doesn't have all the overhead of a full 10199semaphore implementation. 10200 10201Fixed a deadlock problem where a method that accesses the PCI 10202address space can block forever if it is the first access to the 10203space. 10204 10205------------------------------------------- 10206Summary of changes for this label: 06_02_00 10207 10208Support for environments that cannot handle unaligned data 10209accesses (e.g. firmware and OS environments devoid of alignment 10210handler technology namely SAL/EFI and the IA-64 Linux kernel) has 10211been added (via configurable macros) in these three areas: - 10212Transfer of data from the raw AML byte stream is done via byte 10213moves instead of word/dword/qword moves. - External objects are 10214aligned within the user buffer, including package elements (sub- 10215objects). - Conversion of name strings to UINT32 Acpi Names is now 10216done byte-wise. 10217 10218The Store operator was modified to mimic Microsoft's 10219implementation when storing to a Buffer Field. 10220 10221Added a check of the BM_STS bit before entering C3. 10222 10223The methods subdirectory has been obsoleted and removed. A new 10224file, cmeval.c subsumes the functionality. 10225 10226A 16-bit (DOS) version of AcpiExec has been developed. The 10227makefile is under the acpiexec directory. 10228